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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 79. Отображено 79.
21-01-2015 дата публикации

Production method for preparing potassium dihydrogen phosphate and by-producing special fertilizer for gingko seedlings

Номер: CN104291300A
Автор: CHEN XIAOHU, LIAO JIXING, ZHAO WEIYI, SHI XIUMING, LI JUNQI, PENG BAOLIN, ZENG SHU, ZHU FEIWU, HE MIN, TANG XIAONING
Принадлежит:

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing potassium dihydrogen phosphate and by-producing a special fertilizer for gingko seedlings. According to the production method, the purity of a potassium dihydrogen phosphate product is enhanced by changing the coefficients, namely temperature and the like, of preparing potassium dihydrogen phosphate from wet-process phosphoric acid, a compounded-form compound fertilizer which contains N, P and K can be produced, and a controlled-release compound fertilizer is prepared by adding formaldehyde to filter liquor. The production method disclosed by the invention can enhance the purity of potassium dihydrogen phosphate, and the produced special fertilizer for the gingko seedlings has good absorptivity; in addition, the produced special fertilizer for the gingko seedlings can meet the requirements for nutrition in all stages of the growth cycle of the gingko seedlings ...

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Номер записи: 1
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special fertilizer for beet as byproduct

Номер: CN104310340A
Автор: CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, LI JUNQI, PENG BAOLIN, XUE TAO, HUANG FANG, JIN HUIXIN, LI JIERUI
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing ammonium dihydrogen phosphate and preparing a special fertilizer for beet as a byproduct. The temperature and other coefficients of the preparation of ammonium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the ammonium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of ammonium dihydrogen phosphate, and the produced special fertilizer for beet has high absorptivity, can meet the nutrition needs of beet in all stages of the growth period of beet, greatly increases the output of beet, and is an efficient compound fertilizer.

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Номер записи: 2
21-01-2015 дата публикации

Method for preparing monocalcium phosphate and fertilizer for garlic

Номер: CN104291307A
Автор: CHEN XIAOHU, LIAO JIXING, TANG XIAONING, PENG BAOLIN, HE MIN, ZHU FEIWU, GAO GUILONG, ZHOU BIN, XUE TAO, ZHAO WEIYI
Принадлежит:

The invention relates to the technical field of chemical engineering, and discloses a method for preparing monocalcium phosphate and a fertilizer for garlic. The method comprises the following steps: carrying out reaction on phosphoric acid and carbamide to generate a midbody, carrying out reaction on the midbody and alkali calcium salt to generate monocalcium phosphate, analyzing the amounts of various nutrient elements required for the garlic growth through researching the amounts of the nutrient elements absorbed by the garlic from the soil, and preparing the fertilizer for garlic by utilizing the waste liquor obtained by producing the monocalcium phosphate. According to the method, the raw materials are fully utilized, the produced monocalcium phosphate is relatively good in quality and the prepared fertilizer for garlic is relatively low in cost.

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Номер записи: 3
21-01-2015 дата публикации

Production for preparing special fertilizer for peas from diammonium hydrogen phosphate byproduct

Номер: CN104291286A
Автор: WANG XIANWEI, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, HAN CHAOYING, ZHAO WEIYI, ZENG SHU, ZHAO PINGYUAN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing special fertilizer for peas from a diammonium hydrogen phosphate byproduct. According to the method, the requirement for nutrient elements of the special fertilizer for peas is analyzed, the defect in the process for preparing a diammonium hydrogen phosphate product is combined, and the process for preparing the diammonium hydrogen phosphate product and the process for preparing the special fertilizer for peas are combined, so that the two processes are supplemented, wastage rate of nitrogen phosphor and waste liquid emission in the process for preparing the diammonium hydrogen phosphate product can be reduced, and the production cost of the diammonium hydrogen phosphate product can be reduced; and parameters of the process steps are controlled, so that the purity of the prepared diammonium hydrogen phosphate product can be 96 percent, and an effective special ...

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Номер записи: 4
07-01-2015 дата публикации

Production method for preparing monopotassium phosphate and byproduct special fertilizer for medlar

Номер: CN104261378A
Автор: LIAO JIXING, CHEN XIAOHU, WEI FAZHAN, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN
Принадлежит:

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing monopotassium phosphate and a byproduct special fertilizer for medlar. The quality of the produced medlar compound fertilizer is guaranteed by virtue of molar ratio of raw materials in a production process and accurate analysis and detection of the filtrate in a crystallization step, and a waste liquid in the production process of a chemical engineering product is used as a raw material of the medlar compound fertilizer by way of adjusting the content of filtrate components, so that emission of the waste liquid is avoided and the production cost of the compound fertilizer is lowered. Meanwhile, the purity of a monopotassium phosphate product is improved, the production cost of the monopotassium phosphate product is lowered, and the environmental pollution is avoided. The production method has remarkable economic and ecologic benefits.

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Номер записи: 5
31-12-2014 дата публикации

Preparation method of broad bean strengthening fertilizer

Номер: CN104249999A
Автор: SHI XIUMING, GAO GUILONG, LIAO JIXING, XUE TAO, ZHU FEIWU, CHEN XIAOHU, PENG BAOLIN, GU WENQUAN, TANG XIAONING
Принадлежит:

The invention relates to the technical field of chemical industry, discloses a preparation method of a broad bean strengthening fertilizer, and solves the technical problems that collocation of nutrient elements in the existing broad bean fertilizer cannot meet demands on nutrient elements in the growing process of broad beans and thus fewer broad bean fertilizers are absorbed and utilized by the broad beans, and some element compounds remain in soil to change the structure of the soil and harden the soil. In the preparation method, phosphoric acid is reacted with carboxamide to generate an intermediate, the intermediate is reacted with basic potassium, and a part of generated potassium dihydrogen phosphate is crystallized and separated out so as to adjust contents of nitrogen, phosphate and potassium in a reaction solution to meet growth demands of the broad beans; the broad bean strengthening fertilizer is relatively low in production cost; in the production process, no waste liquid is ...

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Номер записи: 6
11-03-2015 дата публикации

Di-ammonium phosphate produced by wet process phosphoric acid and production method of di-ammonium phosphate

Номер: CN104401953A
Автор: LIAO JIXING, CHEN BIN, ZHU FEIWU, PENG BAOLIN, ZHOU YONG
Принадлежит:

The invention relates to the technical field of di-ammonium phosphate produced by wet process phosphoric acid, in particular to di-ammonium phosphate produced by wet process phosphoric acid and a production method of the di-ammonium phosphate. Ammonia is added into wet process phosphoric acid, and the molar ratio of ammonia and total phosphoric acid is controlled to enable the neutralization degree to be 0.5-0.8; impurities in the wet process phosphoric acid can produce a deposit together with phosphoric acid, fluorine and the like, so that wet process phosphoric acid is purified to a certain degree, the phenomenon of relatively low available phosphate content caused by the deposit produced by the impurities in the prepared di-ammonium phosphate, phosphoric acid and fluorine, the quality of di-ammonium phosphate is further improved, the available phosphate content accounts for 92-96% of the total phosphorus content in di-ammonium phosphate, and the content of fluorine in di-ammonium phosphate ...

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Номер записи: 7
07-01-2015 дата публикации

Preparation method of special compound fertilizer for haricot

Номер: CN104261376A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, CHEN XIAOHU, ZHOU BIN, ZHAO WEIYI, ZENG SHU, WANG LIYUAN
Принадлежит:

The invention discloses a preparation method of a special compound fertilizer for haricot, which comprises the following steps: preparing ammonium dihydrogen phosphate, and preparing the special compound fertilizer for haricot. The method is convenient to operate and low in cost. In the ammonium dihydrogen phosphate product preparation process, the filtrate is processed to obtain the special compound fertilizer for haricot. No three wastes are discharged, so the method has obvious economic value and environmental protection meanings. Compared with the ammonium dihydrogen phosphate prepared by the traditional technique, the ammonium dihydrogen phosphate prepared by the method has the advantages of higher purity and lower impurity content.

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Номер записи: 8
25-03-2015 дата публикации

Method for preparing potassium dihydrogen phosphate solution and coproducing special fertilizer for sweet potatoes

Номер: CN104445123A
Автор: CHEN XIAOHU, LIAO JIXING, LI JUNQI, PENG BAOLIN, HE MIN, ZHU FEIWU, ZHAO WEIYI, LIU QIONG, ZENG SHU, MAO XIAOHAO
Принадлежит:

The invention belongs to the technical field of chemical engineering and particularly relates to a method for preparing potassium dihydrogen phosphate solution and coproducing a special fertilizer for sweet potatoes. By changing the temperature and other coefficients of the potassium dihydrogen phosphate solution which is prepared from phosphoric acid by adopting a wet process, the purity of the potassium dihydrogen phosphate solution can be improved, and meanwhile, a combined compound fertilizer containing N, P and K can be produced. In addition, by adding formaldehyde into a filtrate to prepare the controlled-release compound fertilizer and improving the purity of the potassium dihydrogen phosphate solution, the produced special fertilizer for sweet potatoes has good absorption rate and can meet the needs of sweet potatoes for nutrients in each period of the growth cycle and increase the yield of sweet potatoes. The special fertilizer is a high-efficient compound fertilizer.

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Номер записи: 9
24-12-2014 дата публикации

Production method for preparing monocalcium phosphate byproduct used as special fertilizer for chives

Номер: CN104229766A
Автор: CHEN BIN, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, XUE TAO, PENG BAOLIN, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing a monocalcium phosphate byproduct used as a special fertilizer for chives. A fertilizer required by the chives is analyzed, nutrient elements contained in a residual waste liquid in a preparation technology of a monocalcium phosphate product are analyzed, preparation of the monocalcium phosphate product and preparation of the special fertilizer for the chives are organically combined together, the discharged waste liquid amount is reduced, a large amount of waste of nitrogen, phosphorus and calcium elements is avoided, and the crystallization separation amount of monocalcium phosphate in a monocalcium phosphate crystallization separation step is controlled, so that deep crystallization separation is unnecessary, the purity of the monocalcium phosphate product is further increased to be higher than 97.1%, and the cost for purifying the monocalcium phosphate product in the ...

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Номер записи: 10
04-02-2015 дата публикации

Production method for preparing monopotassium phosphate and by-product special fertilizer for strawberry

Номер: CN104326458A
Автор: CHEN XIAOHU, LIAO JIXING, ZHAO WEIYI, SHI XIUMING, LI JUNQI, PENG BAOLIN, ZENG SHU, ZHU FEIWU, HUANG FANG, TANG XIAONING
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing monopotassium phosphate and a by-product a special fertilizer for strawberry. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monopotassium phosphate, purity of the product monopotassium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. In addition, a filtrate is adjusted to acid, and a formaldehyde solution is added to prepare a controlled-release compound fertilizer. By the method, purity of monopotassium phosphate can be raised, and the produced special fertilizer for strawberry has good absorptivity. Meanwhile, the produced special fertilizer for strawberry can meet nutritional requirements of each period of growth cycle of strawberry. By the use of the compound fertilizer, yield of strawberry is raised greatly. The special fertilizer is an efficient compound ...

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Номер записи: 11
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special fertilizer for ginger as byproduct

Номер: CN104310336A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, SHI XIUMING, CHEN XIAOHU, PENG BAOLIN
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing ammonium dihydrogen phosphate and preparing a special fertilizer for ginger as a byproduct. The temperature and other coefficients of the preparation of ammonium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the ammonium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of ammonium dihydrogen phosphate, and the produced special fertilizer for ginger has high absorptivity, can meet the nutrition needs of ginger in all stages of the growth period of ginger, greatly increases the output of ginger, and is an efficient compound fertilizer.

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Номер записи: 12
03-09-2014 дата публикации

Production method for diammonium hydrogen phosphate

Номер: CN104016322A
Автор: PENG BAOLIN, LIAO JIXING, ZHU FEIWU, HAN CHAOYING, ZHENG CHAO, ZHOU BIN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for diammonium hydrogen phosphate. A diammonium hydrogen phosphate product is prepared by subjecting a high pure urea phosphate solution and ammonia to a double decomposition reaction, reacting for 20-60 min under stirring and at a temperature of 50-80 DEG C by controlling a pH value at 7.8-8.2. Physical and chemical indexes of the diammonium hydrogen phosphate product are as follows: the total nutrient content of diammonium hydrogen phosphate is higher than 74%; the content of total nitrogen is 21.02-21.20%; the content of phosphorus pentoxide is 53.0-53.52%; moisture content is 0.25-0.32%; the content of water insoluble substances is 0.087-0.096%; and the content of fluoride is 0.1-0.14%. The diammonium hydrogen phosphate product fully meets an industrial first level product standard.

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Номер записи: 13
07-01-2015 дата публикации

Method for preparing special compound fertilizer for eucalyptus from monopotassium phosphate byproducts

Номер: CN104261379A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, ZHOU YONG, CHEN XIAOHU, WANG XIANWEI, ZHAO WEIYI, ZENG SHU, HUANG FANG
Принадлежит:

The invention discloses a method for preparing a special compound fertilizer for eucalyptus from monopotassium phosphate byproducts. The method comprises the following steps of raw material preparation, monopotassium phosphate preparation, filtrate element addition and drying. Monopotassium phosphate is prepared through reaction between phosphoric acid and urea, so that the problem that impurities are generated when monopotassium phosphate is prepared from phosphoric acid by using the traditional wet process is solved; by using the method, high-purity monopotassium phosphate can be prepared, and meanwhile, the rest slurry can be prepared into the special compound fertilizer for the eucalyptus through the processes such as element addition, drying and the like, so that a mother solution is sufficiently utilized, and the cost is reduced; and the chemical compound fertilizer prepared according to research and analysis on the content of elements required by the eucalyptus and the absorption ...

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Номер записи: 14
21-01-2015 дата публикации

Production method for preparing tripotassium phosphate and by-producing special fertilizer for litchi

Номер: CN104291294A
Автор: LIAO JIXING, CHEN XIAOHU, WEI FAZHAN, GAO GUILONG, SHI XIUMING, XUE TAO, PENG BAOLIN, HE MIN, ZHU FEIWU
Принадлежит:

The invention relates to the technical field of chemical industry, and particularly relates to a production method for preparing tripotassium phosphate and by-producing a special fertilizer for litchi. According to the production method, the effective absorption amount of nitrogen, phosphorus and potassium elements is analyzed according to the fertilizer requirement of litchi, and element content is regulated and collocated in a production process course, so that a prepared compounded-form compound fertilizer can furthest meet the requirement of the litchi, excessively high cost caused due to improper element collocation in the production of the compound fertilizer is reduced, and environmental pollution caused by that the compound fertilizer is solidified by adding excessive elements to soil is further prevented; and the impurity removal cost needed when a tripotassium phosphate product is prepared by adopting the traditional wet-process phosphoric acid method is made up, so that the purity ...

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Номер записи: 15
03-09-2014 дата публикации

Production method for monoammonium phosphate

Номер: CN104016323A
Автор: LIAO JIXING, PENG BAOLIN, ZHU FEIWU, SHI XIUMING, HAN CHAOYING, ZHOU YONG
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for monoammonium phosphate. A monoammonium phosphate product is prepared by directly subjecting high pure urea phosphate and ammonia to a double decomposition reaction and reacting for 20-60 min with stirring by controlling a reaction temperature at 40-80 DEG C and a pH value at a reaction endpoint being 4.2-4.6, and through the steps of cooling for crystallization; separating by centrifugation and drying. Measurements of physical and chemical indexes of the produced product show that the physical and chemical indexes of the produced monoammonium phosphate product meet an industrial first level standard. Specifically, the total nutrient content of monoammonium phosphate is higher than 73%; the content of total nitrogen is 12.01-12.23%; the content of phosphorus pentoxide is 61.05-61.25%; the content of moisture is 0.35-0.52%; a pH value is 4.2-4.6; the content of water insoluble ...

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Номер записи: 16
04-02-2015 дата публикации

Production method for preparing dipotassium hydrogen phosphate and by-product special fertilizer for plum trees

Номер: CN104326457A
Автор: CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, LI JUNQI, PENG BAOLIN, XUE TAO, ZHAO JINGXING, WANG SHUAISHUAI, LI MINGXIN
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing dipotassium hydrogen phosphate and a by-product a special fertilizer for plum trees. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of dipotassium hydrogen phosphate, purity of the product dipotassium hydrogen phosphate is raised, a compound fertilizer containing N, P and K combined forms can simultaneously be produced, and formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. By the method, purity of dipotassium hydrogen phosphate can be raised, and the produced special fertilizer for plum trees has good absorptivity. Meanwhile, the produced special fertilizer for plum trees can meet nutritional requirements of each period of growth cycle of plum trees, and is an efficient compound fertilizer.

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Номер записи: 17
30-07-2014 дата публикации

Method for fluidization removal of magnesium from phosphate ore

Номер: CN103950908A
Автор: LIU QIONG, LIAO JIXING, XU YUAN, ZHU FEIWU, PENG BAOLIN
Принадлежит:

The invention discloses a method for fluidization removal of magnesium from a phosphate ore. The method comprises the steps: grinding a raw phosphate ore into a phosphate ore powder, then adding water, and adjusting into a slurry; then adding the phosphate ore slurry and a magnesium removal liquid into a fluidization magnesium removal tower, mixing, and generating a reaction; successively carrying out solid-liquid separation, washing and drying on the phosphate ore slurry after magnesium removal to obtain a phosphate ore concentrate; adding an acid respectively into a magnesium-containing solution a obtained from solid-liquid separation of the phosphate ore slurry and the washed water of the phosphate ore slurry to prepare magnesium removal liquids; and carrying out shunting treatment of the reacted liquid after magnesium removal. The fluidization technology is applied in the phosphate ore magnesium-removal process, and parameters of each process step are controlled, the content of available ...

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Номер записи: 18
14-01-2015 дата публикации

Production method for preparing diammonium hydrogen phosphate and byproduct special fertilizer for oats

Номер: CN104276551A
Автор: ZHENG CHAO, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, ZHOU YONG, ZHAO WEIYI, ZENG SHU, ZHAO PINGYUAN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing diammonium hydrogen phosphate and a byproduct special fertilizer for oats. The fertilizer requirements of oats are analyzed, and the defects in processing steps in the preparation of an ammonium dihydrogen phosphate product are analyzed, so that the preparation processes of the special fertilizer for oats and the ammonium dihydrogen phosphate product are combined, and the two irrelevant processes are made complementary, thereby increasing the added value in the preparation process of the ammonium dihydrogen phosphate product, improving the purity of the ammonium dihydrogen phosphate product, saving element resources such as nitrogen, phosphorus and the like, and reducing the discharge amount of waste liquor; and nutritive elements in the waste liquor produced in the preparation process of the ammonium dihydrogen phosphate product are controlled and regulated ...

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Номер записи: 19
21-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and co-producing enhancement fertilizer special for onions

Номер: CN104291290A
Автор: CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, HE MIN, SHI XIUMING, LI JUNQI, TANG XIAONING
Принадлежит:

The invention relates to the technical field of chemical industry, and discloses a method for preparing ammonium dihydrogen phosphate and co-producing an enhancement fertilizer special for onions. The method comprises the following steps: analyzing the proportion of nutritive elements required in a growth process of the onions by detecting the quantities of various nutritive elements absorbed from soil in the growth process of the onions, then reacting phosphoric acid with carbamide to generate an intermediate, then introducing ammonia gas into the intermediate to produce ammonium dihydrogen phosphate, separating part of ammonium dihydrogen phosphate by crystallization for adjusting the proportion of the nutritive elements in a reaction liquid to meet the requirements of the growth of the onions, and adding other nutritive elements required by the onions to prepare the enhancement fertilizer special for the onions. According to the production method disclosed by the invention, raw materials ...

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Номер записи: 20
14-05-2014 дата публикации

Method of preparing trisodium phosphate by using wet-process phosphoric acid

Номер: CN103787294A
Автор: ZHU FEIWU, LIAO JIXING, PENG BAOLIN, LIU QIONG, HAN CHAOYING, ZHANG JINPING, ZHANG YI, XU YUAN
Принадлежит:

The invention discloses a method of preparing trisodium phosphate by using wet-process phosphoric acid. The method comprises the following steps: reacting carbomite with wet-process phosphoric acid to obtain an intermediate; and reacting the intermediate with sodium hydroxide to obtain a trisodium phosphate product. The method disclosed by the invention is short in process line, low in energy consumption, stable in product quality, low in production cost, convenient to operate and safe in production. Byproduct slurry can be further fully recycled. The whole production process is environment-friendly, clean and pollution-free, free of discharge of exhaust gases, wastewater and waste residues, responds to the policy of energy conservation, emission reduction and clean production, and overcomes the problems of complex process, unstable product quality, high energy consumption, environmental pollution and the like in the prior art. The purity of the obtained trisodium phosphate product is more ...

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Номер записи: 21
30-04-2014 дата публикации

Method for preparing disodium hydrogen phosphate from wet-process phosphoric acid

Номер: CN103754853A
Автор: WEI FAZHAN, LIAO JIXING, PENG BAOLIN, ZHU FEIWU, ZHANG YI, HAN CHAOYING, ZHANG JINPING, LIU QIONG
Принадлежит:

The invention discloses a method for preparing disodium hydrogen phosphate from wet-process phosphoric acid, which comprises the following steps: reacting carbamide with wet-process phosphoric acid to obtain an intermediate, and reacting the intermediate with sodium hydroxide to prepare the disodium hydrogen phosphate product. The method has the advantages of short process route, low energy consumption, stable product quality, low production cost and high production safety, is convenient to operate, can completely recycle and reutilize the byproduct slurry, is environment-friendly, clean and pollution-free and has no emissions of waste gas, wastewater and waste slag in the whole production process, responds to the call of energy-saving emission-reduction clean production policy, and solves the problems of complex technique, unstable product quality, high energy consumption, environmental pollution and the like in the prior art; and the purity of the disodium hydrogen phosphate product is ...

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Номер записи: 22
25-03-2015 дата публикации

Comprehensive utilization method of wastewater containing phosphorus and fluorine

Номер: CN104445730A
Автор: ZHU FEIWU, LIAO JIXING, PENG BAOLIN, XIANG SHUANGLONG
Принадлежит:

The invention relates to the field of wastewater comprehensive utilization, and particularly relates to a comprehensive utilization method of wastewater containing phosphorus and fluorine. The comprehensive utilization method comprises the following steps: carrying out twice neutralization on the wastewater containing phosphorus and fluorine, and controlling the final pH value after each time of neutralization; separating calcium fluoride from wastewater according to the solubility product of calcium fluoride and calcium orthophosphate, so as to enable the main ingredients of wastewater to be calcium orthophosphate and silica gel; separating silica gel by centrifugal separation to obtain a waste liquid containing phosphorus; carrying out secondary neutralization on the waste liquid containing phosphorus to enable the pH value to be 4-7; after generating calcium hydrophosphate, carrying out cooling crystallization treatment; separating calcium hydrophosphate to obtain a clear liquid, so ...

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Номер записи: 23
21-01-2015 дата публикации

Coproduction method for monopotassium phosphate and special compound fertilizer for radish

Номер: CN104291297A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, CHEN XIAOHU, ZHOU BIN, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention discloses a coproduction method for monopotassium phosphate coproduction and a special compound fertilizer for radish. The method comprises the following three steps: mixing and reacting raw materials, preparing monopotassium phosphate and preparing the special compound fertilizer for radish. The raw materials, temperature and element content are controlled, so that the filtrate for the special compound fertilizer for radish can be prepared, the compound fertilizer prepared by using the filtrate can meet the requirements of the radish on nutrient elements, the problem that soil environment pollution is caused by fertilizer residues is solved, and the compound fertilizer has high environment-friendly value and economic value.

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Номер записи: 24
04-02-2015 дата публикации

Production method for preparing sodium dihydrogen phosphate and by-product special fertilizer for eucommia ulmoides

Номер: CN104326454A
Автор: LIAO JIXING, GAO GUILONG, XIANG SHUANGLONG, XUE TAO, ZHANG WEI, CHEN XIAOHU, ZHU FEIWU
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing sodium dihydrogen phosphate and a by-product a special fertilizer for eucommia ulmoides. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of sodium dihydrogen phosphate, purity of the product sodium dihydrogen phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of sodium dihydrogen phosphate can be raised, and the produced special fertilizer for eucommia ulmoides has good absorptivity. Meanwhile, formaldehyde is added in a filtrate to prepare a controlled-release compound fertilizer. The produced special fertilizer for eucommia ulmoides can meet nutritional requirements of each period of growth cycle of eucommia ulmoides. By the use of the fertilizer, yield of eucommia ulmoides is increased greatly. The special fertilizer is an efficient compound ...

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Номер записи: 25
04-02-2015 дата публикации

Production method for preparing monocalcium phosphate and by-product special fertilizer for red bean

Номер: CN104326462A
Автор: LIAO JIXING, XUE TAO, ZHOU BIN, ZENG SHU, ZHU FEIWU, CHEN XIAOHU, ZHOU YONG
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing monocalcium phosphate and a by-product a special fertilizer for red bean. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monocalcium phosphate, purity of the product monocalcium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of monocalcium phosphate can be raised, and the produced special fertilizer for red bean has good absorptivity. Meanwhile, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. The produced special fertilizer for red bean can meet nutritional requirements of each period of growth cycle. By the use of the compound fertilizer, yield of red bean is raised greatly. The special fertilizer is an efficient compound fertilizer.

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Номер записи: 26
04-03-2015 дата публикации

Production method for special watermelon fertilizer as ammonium dihydrogen phosphate preparation byproduct

Номер: CN104386660A
Автор: LI KAI, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, SHI XIUMING, XUE TAO, ZHU FEIWU, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical industry, in particular to a production method for a special watermelon fertilizer as an ammonium dihydrogen phosphate preparation byproduct. By changing temperature and other coefficients of wet process preparation of ammonium dihydrogen phosphate from phosphoric acid, the purity of the ammonium dihydrogen phosphate product is improved, also a compound fertilizer containing compound forms of N, P and K can be produced, the purity of ammonium dihydrogen phosphate can be enhanced, the produced special watermelon fertilizer has good absorptivity, and meanwhile formaldehyde is added to the filtrate to make a controlled release compound fertilizer. The produced special watermelon fertilizer can meet the nutritional needs of each period in the growth cycle, greatly increases the watermelon yield, and is an efficient compound fertilizer.

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Номер записи: 27
31-12-2014 дата публикации

Production method of special tobacco fertilizer serving as byproduct of preparation of monopotassium phosphate

Номер: CN104250001A
Автор: HAN CHAOYING, GAO GUILONG, LIAO JIXING, ZHAO WEIYI, ZHU FEIWU, CHEN XIAOHU, PENG BAOLIN, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering, in particular to a production method of special tobacco fertilizer serving as a byproduct of preparation of monopotassium phosphate. The special tobacco fertilizer serving as the byproduct prepared from waste liquid obtained by preparation of the monopotassium phosphate by a wet method is produced by detecting and analyzing the element content of the special tobacco fertilizer and an effective absorption form and an effective absorption amount of tobaccos to nitrogen, phosphorus and potassium elements and adjusting and matching the element content in a technical production process; the matching contents of a large quantity of nutritional elements such as nitrogen, phosphorus and potassium are adjusted, so that excessive nutritional elements are prevented from being introduced into soil, and the environmental pollution caused by solidification of composite fertilizer and blocking of the soil is avoided; furthermore, the ...

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Номер записи: 28
07-01-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate and byproduct special fertilizer for Chinese yam

Номер: CN104261937A
Автор: ZHAO XIANMING, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, XUE TAO, PENG BAOLIN, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate and a byproduct special fertilizer for Chinese yam. Through analysis on requirements on nutritional elements in the Chinese yam growth process, analysis and realization of fertilization conditions of traditional Chinese yam planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, the production process of the special fertilizer for the Chinese yam is combined with the preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the Chinese yam are complementary; production of the special fertilizer for the Chinese yam is carried ...

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Номер записи: 29
07-01-2015 дата публикации

Production method for preparing ammonium phosphate and coproducing special fertilizer for mulberry

Номер: CN104261372A
Автор: ZHU FEIWU, GAO GUILONG, LIAO JIXING, ZHAO WEIYI, PENG BAOLIN, CHEN XIAOHU, ZHU DEJUN, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical industry, particularly a production method for preparing ammonium phosphate and coproducing a special fertilizer for mulberry. By analyzing nutrient demand conditions in the mulberry growth process in combination with analysis and understanding of the defects in the ammonium phosphate product preparation technique, the preparation technique of the special combined compound fertilizer for mulberry is combined with the preparation technique of the ammonium phosphate product to perform complementation, thereby lowering the waste liquid discharge amount in the ammonium phosphate product preparation technique, avoiding the defect of lower ammonium phosphate product purity due to deep crystallization, and improving the quality of the ammonium phosphate product. The method enhances the mulberry growth rate, improves the mulberry yield and quality, prevents excessive elements from residing in soil due to improper matching of nutrient elements ...

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Номер записи: 30
28-01-2015 дата публикации

Method for preparing dipotassium hydrogen phosphate and preparing special fertilizer for lettuce as byproduct

Номер: CN104310352A
Автор: CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, LI JUNQI, HUANG FANG, JIN HUIXIN, TANG XIAONING
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing dipotassium hydrogen phosphate and preparing a special fertilizer for lettuce as a byproduct. The effective absorption amounts of N, P and K elements are analyzed according to fertilizer requirements of lettuce, and the contents of elements in the production process are adjusted and matched to make the prepared compounded composite fertilizer maximally meet the demands of lettuce, so the too high cost caused by improper matching of the elements in the production of the composite fertilizer is avoided, and environmental pollution caused by solidification of the composite fertilizer due to the addition of excess elements into soil is further avoided.

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Номер записи: 31
21-01-2015 дата публикации

Method for preparing monopotassium phosphate and co-producing special compound fertilizer for sesame

Номер: CN104291303A
Автор: PENG BAOLIN, GAO GUILONG, LIAO JIXING, XUE TAO, ZHU FEIWU, CHEN XIAOHU, ZHOU YONG, ZHAO WEIYI, ZENG SHU, ZHAO PINGYUAN
Принадлежит:

The invention discloses a method for preparing a monopotassium phosphate and co-producing a special compound fertilizer for sesame. The method comprises the following three steps: mixing raw materials and reacting; preparing monopotassium phosphate; and preparing a special compound fertilizer for sesame. Through the process adjustment for the preparation of monopotassium phosphate and by matching of such elements essential to growth of sesame as nitrogen, phosphorus, potassium, calcium, iron and boron, a special compound fertilizer meeting the growth needs of sesame is produced.

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Номер записи: 32
14-01-2015 дата публикации

Method for preparing monosodium phosphate and byproduct fertilizer specially used for buckwheat

Номер: CN104276555A
Автор: LIAO JIXING, CHEN XIAOHU, WEI FAZHAN, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN
Принадлежит:

The invention relates to the technical field of chemical industry and discloses a method for preparing monosodium phosphate and a byproduct fertilizer specially used for buckwheat. The method comprises the steps of detecting the content of various nutrient elements absorbed from soil in the buckwheat growth process; then, analyzing the ratio of the nutrient elements required by buckwheat growth; enabling phosphoric acid to react with carbamide to generate an intermediate; enabling the intermediate to react with alkaline sodium salt; crystallizing and separating out a part of monosodium phosphate generated by the reaction through strictly controlling parameters in the reaction; regulating the content of nitrogen and phosphorus in the reaction solution to meet the buckwheat growth demand; and adding potassium and other medium trace element compounds into the reaction solution to prepare the fertilizer specially used for buckwheat. By using the method, the purity of the prepared monosodium ...

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Номер записи: 33
19-03-2014 дата публикации

Method for producing calcium triple superphosphate by using wet phosphorus ore powder

Номер: CN103641094A
Автор: XU KUI, CHEN BIN, LIAO JIXING, LIN LONG, PAN LIFU, PENG BAOLIN, ZHU FEIWU
Принадлежит:

The invention discloses a method for producing calcium triple superphosphate by using wet phosphorus ore powder. The method comprises the following steps: using the wet phosphorus ore powder to replace dry phosphorus ore powder, mining phosphorus ore from a mine, then locally crushing and milling, pulping the ore powder with water, then conveying to a place where a calcium triple superphosphate production device is located by using a pump, filtering phosphorus ore pulp to obtain the wet phosphorus ore powder, then mixing the wet phosphorus ore powder with concentrated phosphoric acid, then reacting, curing, granulating, drying, and screening to obtain the calcium triple superphosphate. The product obtained by the invention can achieve the standard of first-rate products, the wet phosphorus ore powder is creatively adopted to replace the dry phosphorus ore powder, and the way of conveying the ore pulp by the pump is used for replacing the transportation of the phosphorus ore by an automobile ...

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Номер записи: 34
07-01-2015 дата публикации

Method for co-production of special compound fertilizer for Chinese cabbage in process of preparation of monopotassium phosphate

Номер: CN104261380A
Автор: LIAO JIXING, GAO GUILONG, PENG BAOLIN, XUE TAO, ZHOU YONG, CHEN XIAOHU, ZHU FEIWU, ZHAO WEIYI, ZENG SHU, HUANG FANG
Принадлежит:

The invention discloses a method for co-production of a special compound fertilizer for Chinese cabbage in the process of preparation of monopotassium phosphate. The method comprises the following three steps: mixed reaction of raw materials, preparation of monopotassium phosphate, and preparation of a special compound fertilizer for Chinese cabbage. The monopotassium phosphate is prepared through reaction of phosphoric acid and urea, so that the produced monopotassium phosphate product is high in purity, the problem that impurities are difficulty processed when the monopotassium phosphate is prepared by using a traditional wet process phosphoric acid method is solved, the production cost is reduced, in the preparation process of the monopotassium phosphate, through control on the raw materials, temperature and element content, filtrate capable of preparing a special compound fertilizer for Chinese cabbage is obtained, and the compound fertilizer prepared by using the filtrate can meet ...

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Номер записи: 35
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special fertilizer for persimmons as byproduct

Номер: CN104310329A
Автор: LI KAI, GAO GUILONG, LIAO JIXING, XUE TAO, ZHOU YONG, CHEN XIAOHU, ZHU FEIWU, ZHAO WEIYI, ZENG SHU, WANG LIYUAN
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing ammonium dihydrogen phosphate and preparing a special fertilizer for persimmons as a byproduct. The temperature and other coefficients of the preparation technology of ammonium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the ammonium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of ammonium dihydrogen phosphate, and the produced special fertilizer for persimmons has high absorptivity; and formaldehyde is added to a filtrate to prepare the controlled release compound fertilizer. The produced special fertilizer for persimmons can meet the nutrition needs of persimmons in all stages of the growth period of persimmons, greatly increases the output of persimmons, and is an efficient compound fertilizer.

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Номер записи: 36
14-05-2014 дата публикации

Method for preparing sodium dihydrogen phosphate by utilizing phosphoric acid by wet process

Номер: CN103787293A
Автор: LIAO JIXING, ZHU FEIWU, PENG BAOLIN, HAN CHAOYING, ZHANG YI, LIU QIONG, ZHANG JINPING, XU YUAN
Принадлежит:

The invention discloses a method for preparing sodium dihydrogen phosphate by utilizing phosphoric acid by wet process. The method comprises the steps of carrying out reaction on carbamide and the phosphoric acid by the wet process to obtain intermediate, and then carrying out a reaction on the intermediate and sodium hydroxide to obtain the sodium dihydrogen phosphate product. The method is short in process route, low in energy consumption, stable in product quality, low in production cost, convenient to operate and safe in production; the by-product slurry can be completely recycled; the whole production process is environment-friendly, clean and free from pollution as well as emission of waste gas, waste water and waste residue; therefore, the method responses to the policy of energy conservation and emission reduction as well as clean production, and solves the problems of complicated technology, unstable product quality, high energy consumption, environmental pollution and the like ...

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Номер записи: 37
21-01-2015 дата публикации

Production method of preparing tricalcium phosphate and byproduct special fertilizer for mangos

Номер: CN104291305A
Автор: LIAO JIXING, CHEN XIAOHU, WEI FAZHAN, GAO GUILONG, SHI XIUMING, XUE TAO, ZHU FEIWU
Принадлежит:

The invention relates to the technical field of chemical engineering and particularly relates to a production method of preparing tricalcium phosphate and a byproduct special fertilizer for mangos. In a preparation process of a tricalcium phosphate product, phosphoric acid reacts with urea and the temperature during the reaction is controlled, so that the produced urea phosphate generates structure transformation reaction, and thus, urea phosphate in an ion form is generated; on the condition that the phosphoric acid is excessive, the phosphoric acid reacts with positive ions to generate an intermediate plasma with a complexing effect and dihydrogen phosphate ion; then calcium ions are added to react with the intermediate plasma and the dihydrogen phosphate ion to produce tricalcium phosphate; and according to the requirements of mangos on nitrogen-phosphor-potassium elements, the content of residual nitrogen and phosphor in liquid in the production process of tricalcium phosphate is controlled ...

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Номер записи: 38
07-01-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate and byproduct special fertilizer for radix scutellariae

Номер: CN104261375A
Автор: ZHU FEIWU, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, HAN CHAOYING, XUE TAO, ZHOU YONG, ZHAO WEIYI, ZENG SHU, ZHAO PINGYUAN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate and a byproduct special fertilizer for radix scutellariae. Through analysis on requirements on nutritional elements in the radix scutellariae growth process, analysis and realization of fertilization conditions of traditional radix scutellariae planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, the production process of the special fertilizer for the radix scutellariae is combined with the preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the radix scutellariae are complementary; production of the special fertilizer ...

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Номер записи: 39
04-02-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate and by-product special fertilizer for sugarcane

Номер: CN104326448A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, YANG YONG, CHEN XIAOHU, XIE FEI
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing ammonium dihydrogen phosphate and a by-product a special fertilizer for sugarcane. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of ammonium dihydrogen phosphate, purity of the product ammonium dihydrogen phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of ammonium dihydrogen phosphate can be raised, and the produced special fertilizer for sugarcane has good absorptivity. Meanwhile, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. The produced special fertilizer for sugarcane can meet nutritional requirements of each period of growth cycle. By the use of the compound fertilizer, yield of sugarcane is raised greatly. The special fertilizer is an efficient compound fertilizer.

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Номер записи: 40
02-09-2015 дата публикации

Sodium fluosilicate production-phosphorite demagging combined treatment method

Номер: CN104876198A
Автор: XIANG SHUANGLONG, LIAO JIXING, XU YUAN, ZHANG WEI, ZHU FEIWU
Принадлежит:

The invention relates to the technical field of phosphorite quality improvement, particularly a sodium fluosilicate production-phosphorite demagging combined treatment method. Sodium sulfate and wastewater generated in the wet-process phosphoric acid sodium fluosilicate coproduction process are utilized and returned to the phosphorite demagging treatment technique so as to utilize the residual sulfuric acid and fluosilicic acid and remove the magnesium element in the phosphorite, thereby enhancing the phosphorite grade. In the treatment process, since the content of sulfuric acid in the wastewater in the fluosilicic acid coproduction process is lower and the fluosilicic acid content is lower, the raw materials added into the reaction kettle for phosphorite treatment have low corrosiveness to the equipment, thereby lowering the cost for the phosphorite grade enhancement treatment. The sulfur element and fluorine element in the sodium fluosilicate sewage can not be abundantly discharged into ...

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Номер записи: 41
03-09-2014 дата публикации

Production method for tricalcium phosphate

Номер: CN104016325A
Автор: WANG XIANWEI, LIAO JIXING, XU YUAN, ZHU FEIWU, ZHOU YONG, ZHENG CHAO, PENG BAOLIN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for tricalcium phosphate. A tricalcium phosphate product is prepared by directly reacting urea phosphate and calcium hydroxide at a reaction temperature of 70-90 DEG C; controlling a stirring speed; detecting a pH value until the pH value reaches 8-9; separating by centrifugation and drying. By replacing wet-process phosphoric acid, hot-process phosphoric acid and purification phosphoric acid in a conventional process by urea phosphate, energy consumption is reduced; discharge of wastes is prevented; and economic benefits and environmental values are significant. By adjusting the process, the tricalcium phosphate product can reach a food level tricalcium phosphate product completely. A total calcium content of the product is 37.37-38.54%; ignition loss can be reduced by 6-10%; lead content reaches 1.5-1.9 mg/kg; fluoride content reaches 60-70 mg/kg in terms of F; arsenic ...

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Номер записи: 42
28-01-2015 дата публикации

Preparation method of special fertilizer for carrots

Номер: CN104310354A
Автор: CHEN XIAOHU, LIAO JIXING, GU WENQUAN, XU YUAN, LI JIWEI, XIONG CHENGJIE, WANG RUI, ZHU FEIWU, HUANG FANG, JIN HUIXIN
Принадлежит:

The invention relates to the technical field of chemical industry, and discloses a preparation method of a special fertilizer for carrots. The method comprises the following steps: reacting phosphoric acid with carbomite to prepare an intermediate, reacting the intermediate with an alkaline potassium salt to prepare potassium dihydrogen phosphate, controlling the content ratio of nutrients in a filtrate in the potassium dihydrogen phosphate crystallizing process, and adding trace element compounds to the potassium dihydrogen phosphate separated filtrate in order to prepare the special fertilizer for carrots. The special fertilizer for carrots is prepared by analyzing the ratio of nutrients required by the growth process of the carrots, so the preparation method has the advantage of carrot output improvement, no emission of waste liquids in the production process, no pollution to environment, high economic value and environmental benefit, and high purity of the byproduct potassium dihydrogen ...

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Номер записи: 43
14-01-2015 дата публикации

Method for preparation of monopotassium phosphate and cogeneration of composite fertilizer for oilseed rape

Номер: CN104276553A
Автор: LIAO JIXING, GAO GUILONG, PENG BAOLIN, XUE TAO, ZHU FEIWU, CHEN XIAOHU, HAN CHAOYING, GU WENQUAN
Принадлежит:

The invention discloses a method for preparation of monopotassium phosphate and cogeneration of a composite fertilizer for oilseed rape. The method comprises the following three steps: mixing reaction of raw materials, preparation of monopotassium phosphate and preparation of a composite fertilizer for oilseed rape. Through process adjustment of preparation of monopotassium phosphate, an NPK composite fertilizer suitable for oilseed rape is cogenerated, the composite fertilizer also contains nutrient elements such as iron, zinc and boron required by the oilseed rape, a guarantee is provided for normal production of the oilseed rape, and the monopotassium phosphate product prepared by using the method is relatively high in purity.

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Номер записи: 44
21-01-2015 дата публикации

Production method for preparing dipotassium hydrogen phosphate with coproduction of special fertilizer for tomatoes

Номер: CN104291296A
Автор: WEI FAZHAN, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, PENG BAOLIN, XUE TAO, ZHU FEIWU, ZHAO WEIYI, ZENG SHU, ZHAO PINGYUAN
Принадлежит:

The invention relates to the technical field of the chemical industry and in particular relates to a production method for preparing dipotassium hydrogen phosphate with coproduction of a special fertilizer for tomatoes. According to the production method, the demand of tomatoes on nutrient elements is analyzed, and cooperatively, in the traditional dipotassium hydrogen phosphate preparation process, other trace element compounds or trace element chelates are added to a mother solution generated in the dipotassium hydrogen phosphate preparation process to prevent resource waste caused by the residual of excessive phosphorus and potassium elements in the solution, and therefore, the yield of the coproduct in the dipotassium hydrogen phosphate preparation process is increased, and furthermore, the value added in the preparation process of the dipotassium hydrogen phosphate product is increased; in the dipotassium hydrogen phosphate product preparation process, the special fertilizer for tomatoes ...

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Номер записи: 45
28-01-2015 дата публикации

Method for preparing tripotassium phosphate and preparing special fertilizer for flax as byproduct

Номер: CN104310349A
Автор: LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, GAO GUILONG, ZHOU YONG, XUE TAO, LIN ZHONGJIAN
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing tripotassium phosphate and preparing a special fertilizer for flax as a byproduct. The effective absorption amounts of N, P and K elements are analyzed according to fertilizer requirements of flax, and the contents of elements in the production process are adjusted and matched to make the prepared compounded composite fertilizer maximally meet the demands of flax so the too high cost caused by improper matching of the elements in the production of the composite fertilizer is avoided, and environmental pollution caused by solidification of the composite fertilizer due to the addition of excess elements into soil is further avoided; and the molar ratio of raw materials in the production process and the accurate analysis and detection of a filtrate in a crystallization step make the quality of the produced flax composite fertilizer guaranteed, and the adjustment of the contents ...

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Номер записи: 46
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special fertilizer for corn as byproduct

Номер: CN104310333A
Автор: LIAO JIXING, GAO GUILONG, ZHOU YONG, XUE TAO, ZHU FEIWU, CHEN XIAOHU, PENG BAOLIN
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing ammonium dihydrogen phosphate and preparing a special fertilizer for corn as a byproduct. The temperature and other coefficients of the preparation technology of ammonium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the ammonium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of ammonium dihydrogen phosphate, and the produced special fertilizer for corn has high absorptivity; and formaldehyde is added to a filtrate to prepare the controlled release compound fertilizer. The produced special fertilizer for corn can meet the nutrition needs of corn in all stages of the growth period of corn, greatly increases the output of corn, and is an efficient compound fertilizer.

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Номер записи: 47
04-02-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate and by-product special fertilizer for chive

Номер: CN104326453A
Автор: CHEN XIAOHU, LIAO JIXING, LI JUNQI, SHI XIUMING, HE MIN, ZHU FEIWU, ZHAO WEIYI, ZHOU YONG, ZENG SHU, JIN HUIXIN
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing ammonium dihydrogen phosphate and a by-product a special fertilizer for chive. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of ammonium dihydrogen phosphate, purity of the product ammonium dihydrogen phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of ammonium dihydrogen phosphate can be raised, and the produced special fertilizer for chive has good absorptivity. Meanwhile, the produced special fertilizer for chive can meet nutritional requirements of each period of growth cycle of chive. By the use of the compound fertilizer, yield of chive is raised greatly. The special fertilizer is an efficient compound fertilizer.

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Номер записи: 48
05-03-2014 дата публикации

Method for producing industrial grade monoammonium phosphate through combination of wet process phosphoric acid and high-purity phosphoric acid

Номер: CN103613083A
Автор: XU KUI, LIAO JIXING, PAN LIFU, PENG BAOLIN, ZHU FEIWU, HAN CHAOYING, WANG LINFENG, ZHOU YONG, WANG XIANWEI, ZHENG CHAO
Принадлежит:

The invention discloses a method for producing industrial grade monoammonium phosphate through combination of wet process phosphoric acid and high-purity phosphoric acid. The method comprises the steps of performing neutralization reaction for two times on filtrate and ammonia gas or ammonia water to obtain ammonium phosphate slurry, wherein the filtrate is obtained by performing desulfurization reaction on phosphate rock powder and wet process phosphoric acid; performing concentration, crystallization and drying by using filtrate which is obtained by adjusting the pH value with high-purity phosphoric acid to obtain an industrial grade monoammonium phosphate product; removing most of impurity ions when the pH value is neutralized to 4.0-5.0 by the first neutralization reaction, then performing the second neutralization reaction to remove impurities in the wet process phosphoric acid, finely adjusting the pH value to 3.9-4.4 by using the high-purity phosphoric acid, and performing concentration ...

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Номер записи: 49
28-01-2015 дата публикации

Preparation method of special compound fertilizer for phaseolus calcaratus

Номер: CN104311185A
Автор: LIAO JIXING, GAO GUILONG, PENG BAOLIN, CHEN XIAOHU, ZHU FEIWU, XUE TAO, ZHOU YONG, ZHAO WEIYI, ZENG SHU, HUANG FANG
Принадлежит:

The invention discloses a preparation method of a special compound fertilizer for phaseolus calcaratu. The method comprises the three steps of: raw material mixing and reaction, preparation of potassium dihydrogen phosphate and preparation of the special compound fertilizer for phaseolus calcaratus. The method not only can prepare potassium dihydrogen phosphate with high purity but also produces a by-product of special compound fertilizer for phaseolus calcaratus through control, and the method makes up the problem of impurity in the traditional wet process for preparation of potassium dihydrogen phosphate; the utilization of waste liquid reduces environmental pollution and the cost.

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Номер записи: 50
12-03-2014 дата публикации

Method for preparing phosphogypsum whiskers by secondary crystallization

Номер: CN103628142A
Автор: LIAO JIXING, ZHANG YI, ZHAO JINGXING, XIONG CHENJIE, ZHU FEIWU
Принадлежит:

The invention discloses a method for preparing phosphogypsum whiskers by secondary crystallization. The method comprises the steps of weighing dried phosphogypsum, adding a sulfuric acid solution, performing stirring reaction in a water bath, filtering when being hot, abandoning insoluble substances, cooling filtrate at room temperature for crystallization, performing suction filtration, and then retaining a filter cake; adding the sulfuric acid solution and a crystallization promoting agent, namely magnesium salt, performing stirring reaction in the water bath, naturally cooling the solution in the water bath for crystallization, performing suction filtration to obtain the whiskers, washing till neutrality and drying. The crystallization promoting agent is not used in primary crystallization in the method disclosed by the invention, the solid-liquid ratio of raw materials has a good effect, the reaction temperature and the stirring rotational speed are reasonably designed, the secondary ...

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Номер записи: 51
16-09-2015 дата публикации

System for recycling fluorine and silicon resources from wet-process phosphoric acid tail gas and recovery method thereof

Номер: CN104906920A
Автор: ZHANG WEI, LIAO JIXING, ZHOU YONG, WANG XIANWEI, XIANG SHUANGLONG, ZHU FEIWU
Принадлежит:

The invention relates to the field of the tail gas treatment technology and in particular relates to a system for recycling fluorine and silicon resources from wet-process phosphoric acid tail gas and a recovery method of the system. Fluorosilicic acid solution is circularly treated in the system, the scale blockage phenomenon of the system can be avoided, fluorosilicic acid can flow out in a solution mode in a cooling process of the tail gas, then fluorosilicic acid is further treated so that the fluorine and silicon resources can be recycled; a small amount of water is adopted for absorption treatment in a tail gas absorption process, then the acquired fluorosilicic acid solution is used for washing tail gas circularly; thus, fluorosilicic acid solution from a fluorine washing tower I has high concentration, the fluorine washing tower I and a fluorine washing tower II are combined to ensure that the fluorine-containing substances during the tail gas empting treatment is low, the recovery ...

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Номер записи: 52
28-01-2015 дата публикации

Method for preparing calcium dihydrogen phosphate and preparing special fertilizer for maize as byproduct

Номер: CN104310358A
Автор: LIAO JIXING, XUE TAO, ZHU FEIWU, GAO GUILONG, LIU QIONG, CHEN XIAOHU, XU YUAN
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing calcium dihydrogen phosphate and preparing a special fertilizer for maize as a byproduct. The temperature and other coefficients of the preparation technology of calcium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the calcium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of calcium dihydrogen phosphate, and the produced special fertilizer for maize has high absorptivity; and formaldehyde is added to a filtrate to prepare the controlled release compound fertilizer. The produced special fertilizer for maize can meet the nutrition needs of maize in all stages of the growth period of maize, greatly increases the output of maize, and is an efficient compound fertilizer.

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Номер записи: 53
03-09-2014 дата публикации

Production method for calcium hydrogen phosphate

Номер: CN104016326A
Автор: ZHU FEIWU, LIAO JIXING, PENG BAOLIN, ZHOU YONG, WANG XIANWEI, ZHENG CHAO, ZHOU BIN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for calcium hydrogen phosphate. A calcium hydrogen phosphate product is prepared by reacting calcium oxide with a certain amount of water to form a calcium hydroxide solution; then reacting the calcium hydroxide solution with urea phosphate under stirring; controlling a pH value at 5.5-6.5; reacting for 5-20 min under stirring continuously and terminating the reaction. By adopting urea phosphate as a direct resource of phosphorus in the calcium hydrogen phosphate product, processes of removing impurities such as metal ions and fluorine in a process for producing feed level calcium hydrogen phosphate by using wet-process phosphoric acid are omitted; phosphorus utilization rate in the whole process is high; removal of a lot of wastes is prevented; and production cost of calcium hydrogen phosphate is reduced. In the obtained calcium hydrogen phosphate product, phosphorus content ...

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Номер записи: 54
07-01-2015 дата публикации

Production method for preparation of calcium dihydrogen phosphate and by-production of special fertilizer for cauliflowers

Номер: CN104261938A
Автор: CHEN BIN, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, XUE TAO, ZHOU YONG, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical industry and particularly relates to a production method for preparation of calcium dihydrogen phosphate and by-production of a special fertilizer for cauliflowers. According to the production method, by analyzing the fertilizer demand situation of the cauliflowers and combining with the shortcomings in a preparation process of a calcium dihydrogen phosphate product, a preparation process of the calcium dihydrogen phosphate product and a preparation process of the special fertilizer for the cauliflowers are combined for production, so that the added value of the product in the preparation process of the calcium dihydrogen phosphate product is improved, the purity of the calcium dihydrogen phosphate product is improved, the waste of phosphorus and calcium element resources is reduced, the emission of waste liquid is reduced, and the serious pollution of the ecological environment is avoided.

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Номер записи: 55
04-02-2015 дата публикации

Production method for preparing monocalcium phosphate and by-product special fertilizer for black soybean

Номер: CN104326461A
Автор: LIAO JIXING, XUE TAO, PENG BAOLIN, ZHAO WEIYI, ZHU FEIWU, CHEN XIAOHU, HAN CHAOYING
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing monocalcium phosphate and a by-product a special fertilizer for black soybean. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monocalcium phosphate, purity of the product monocalcium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of monocalcium phosphate can be raised, and the produced special fertilizer for black soybean has good absorptivity. Meanwhile, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. The produced special fertilizer for black soybean can meet nutritional requirements of each period of growth cycle. By the use of the compound fertilizer, yield of black soybean is raised greatly. The special fertilizer is an efficient compound fertilizer.

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Номер записи: 56
14-01-2015 дата публикации

Production method for preparing special fertilizer for dasheen from diammonium hydrogen phosphate by-products

Номер: CN104276550A
Автор: WEI FAZHAN, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing a special fertilizer for dasheen from diammonium hydrogen phosphate by-products. By virtue of analyzing requirements on nutrient elements of the special fertilizer for dasheen and combining the defects existing in a preparation process of diammonium hydrogen phosphate products, the preparation process of diammonium hydrogen phosphate products is combined with a preparation process of the special fertilizer for dasheen so that the two processes are complementary, wastage rates of nitrogen and phosphorus and the discharge amount of waste liquid in the preparation process of the diammonium hydrogen phosphate products are reduced and the production cost of diammonium hydrogen phosphate is reduced; by controlling parameters in process steps, the purity of the diammonium hydrogen phosphate products can reach 96% and meanwhile an efficient special nitrogen-phosphorus-potassium ...

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Номер записи: 57
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special composite fertilizer for grapefruit trees as byproduct

Номер: CN104310341A
Автор: CHEN XIAOHU, WEI FAZHAN, GAO GUILONG, LIAO JIXING, TANG XIAONING, ZHU FEIWU, LI JIWEI, XU YUAN, WANG RUI, JIN HUIXIN
Принадлежит:

The invention discloses a method for preparing ammonium dihydrogen phosphate and preparing a special composite fertilizer for grapefruit trees as a byproduct. The method comprises the steps of preparing raw materials, preparing ammonium dihydrogen phosphate, adding elements to a filtrate, and drying. The highly pure ammonium dihydrogen phosphate is prepared through a reaction of phosphoric acid, urea and ammonia water, and the composite fertilizer suitable for the growth of grapefruit trees is prepared through processing adjustment of a mother liquor generated through the reaction, so the resource waste is reduced, and the method has certain environmentally-friendly and economic values.

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Номер записи: 58
02-04-2014 дата публикации

Device for continuously producing urea phosphate from wet-process phosphoric acid

Номер: CN103694143A
Автор: ZHU FEIWU, LIAO JIXING, ZHENG CHAO, PENG BAOLIN, ZHAO JINGXING
Принадлежит:

The invention discloses a device for continuously producing urea phosphate from wet-process phosphoric acid, and belongs to the technical field of chemical production. The device comprises a wet-process phosphoric acid storage tank, a phosphoric acid supply pump, a centrifugal machine, a synthesis tank, a raw material bin, a slurry pump, a cooling crystallization device, a circulating water cooling system, a crystal slurry buffer tank, a finished product centrifugal machine, a mother liquid tank and a drying machine. According to the device, the continuous discharging operation is performed through the cooling crystallization device, so that the effects of increasing the automation degree and the production level, reducing operators and the labor intensity and improving the production efficiency are achieved; the circulating water cooling system is adopted for cooling, so that the heat exchange amount is large, the cooling effect is good, the working environment is greatly improved, and ...

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Номер записи: 59
21-01-2015 дата публикации

Production method for preparing tricalcium phosphate and coproducing special fertilizer for rye

Номер: CN104291308A
Автор: LIAO JIXING, CHEN XIAOHU, PENG BAOLIN, GAO GUILONG, ZHU FEIWU, XUE TAO, WANG XIANWEI
Принадлежит:

The invention relates to the technical field of chemical engineering, particularly a production method for preparing tricalcium phosphate and coproducing a special fertilizer for rye. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the rye, and the contents of the elements in the production process are regulated and matched, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of rye, thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil. By adjusting the component contents of the filtrate, the waste liquid in the chemical product production process is used as the raw material for producing the compound fertilizer, thereby avoiding the discharge of the waste liquid and lowering the ...

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Номер записи: 60
14-01-2015 дата публикации

Production method for preparing tripotassium phosphate and byproduct special fertilizer for sunflowers

Номер: CN104276557A
Автор: LIAO JIXING, CHEN XIAOHU, PENG BAOLIN, GAO GUILONG, ZHU FEIWU, XUE TAO, ZHOU YONG
Принадлежит:

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing tripotassium phosphate and a byproduct special fertilizer for sunflowers. According to the fertilizer requirement of sunflowers, the effective absorptive amounts of nitrogen, phosphorus and potassium are analyzed and the element content in the production process is adjusted and matched, so that the prepared chemical compound fertilizer can satisfy the requirements of sunflowers to the maximum extent while the cost which is over-high caused by mismatch of elements in production of the compound fertilizer is lowered, thereby further preventing excessive elements from being put into soil to lead to solidification of the compound fertilizer so as to pollute the environment. The impurity removal cost when the conventional wet process phosphoric acid method is used for preparing a tripotassium phosphate product is lowered, so that the purity of the prepared tripotassium ...

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Номер записи: 61
24-12-2014 дата публикации

Production method for preparing ammonium phosphate byproduct used as special fertilizer for red peonies

Номер: CN104229765A
Автор: ZHU FEIWU, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU DEJUN, XUE TAO, SHI XIUMING, GU WENQUAN
Принадлежит:

The invention relates to the technical field of chemical engineering, particularly to a production method for preparing an ammonium phosphate byproduct used as a special fertilizer for red peonies. Nutritional need conditions of the red peonies during growth are analyzed, defects in a preparation technology for ammonium phosphate products are combined to be analyzed and comprehended, and a preparation technology for a special combined compound fertilizer for the red peonies is combined with the preparation technology for the ammonium phosphate products, so that the two technologies are mutually complemented, the waste liquid discharge quantity in the preparation technology for the ammonium phosphate products is reduced, the defect of the lower ammonium phosphate product impurity caused by deep crystallization is overcome, and the quality of the ammonium phosphate products is improved; nutrient elements in waste liquids are adjusted and matched, so that the prepared special compound fertilizer ...

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Номер записи: 62
31-12-2014 дата публикации

Method for co-producing fertilizer special for white paeony root during preparation of monopotassium phosphate

Номер: CN104250000A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, PENG BAOLIN, CHEN XIAOHU, HAN CHAOYING, ZHAO WEIYI, ZENG SHU, WANG LIYUAN
Принадлежит:

The invention discloses a method for co-producing fertilizer special for white paeony root during preparation of monopotassium phosphate. The method comprises three steps of raw material mixing reaction, preparation of monopotassium phosphate and preparation of the fertilizer special for the white paeony root. The fertilizer special for the white paeony root is obtained by mixing nutritional elements necessary to normal growth and development of the white paeony root, so that soil is looser; by the adding of the various nutritional elements, the health of the white paeony root can be better protected; by the adding of natural mineral substances and plant growth substances, the fertility can more effectively adjust the organ defending capacity of the white paeony root; diseases are reduced, the yield is increased, and the quality of crops is greatly improved. The fertilizer can resist diseases and disasters, and the immunity of white paeony root is enhanced.

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Номер записи: 63
21-01-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate byproduct special fertilizer for pumpkin

Номер: CN104291291A
Автор: CHEN XIAOHU, LIAO JIXING, HE MIN, ZHU FEIWU, WANG LIYUAN, PENG BAOLIN, ZHAO WEIYI, ZHENG CHAO, ZENG SHU, HUANG FANG
Принадлежит:

The invention relates to the technical field of chemical engineering and particularly relates to a production method for preparing an ammonium dihydrogen phosphate byproduct special fertilizer for pumpkin. By changing factors such as temperature for preparation of ammonium dihydrogen phosphate from phosphoric acid through a wet method, the purity of the ammonium dihydrogen phosphate product is improved and meanwhile, a compound fertilizer containing N, P and K compound states can be produced, the purity of ammonium dihydrogen phosphate can be improved, the absorption rate of the produced special fertilizer for pumpkin is good, a controlled-release compound fertilizer is produced by virtue of adding formaldehyde in the filtrate, the produced special fertilizer for pumpkin can meet the nutritional needs of various periods in a growth period and thus the yield of pumpkin is greatly increased and the special fertilizer for pumpkin is an effective compound fertilizer.

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Номер записи: 64
14-01-2015 дата публикации

Production method of special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper

Номер: CN104276558A
Автор: WEI FAZHAN, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, LIN ZHONGJIAN, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering, particularly a production method of a special fertilizer for preparing calcium hydrogen phosphate and coproducing pepper. The effective absorption amounts of nitrogen, phosphorus and potassium are analyzed according to the fertilizer demanded by the pepper, the contents of the nitrogen, phosphorus and calcium in the production process are regulated and matched, and the potassium component and other minor element compounds are added, so that the prepared combined-state compound fertilizer can maximally satisfy the demands of pepper and can be completely absorbed by the pepper (the absorption rate is up to 96.1%), thereby lowering the overhigh cost due to improper element matching in the compound fertilizer production and further avoiding the environment pollution due to solidification of the compound fertilizer since excessive elements are added into the soil.

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Номер записи: 65
04-02-2015 дата публикации

Production method for preparing monocalcium phosphate and by-product special fertilizer for paddy rice

Номер: CN104326463A
Автор: LIAO JIXING, XUE TAO, ZHU FEIWU, GU WENQUAN, PENG BAOLIN, CHEN XIAOHU, ZHANG YI
Принадлежит:

The invention relates to the field of chemical technique, especially to a production method for preparing monocalcium phosphate and a by-product a special fertilizer for paddy rice. By changing coefficients such as temperature and the like of wet-process phosphoric acid preparation of monocalcium phosphate, purity of the product monocalcium phosphate is raised, and a compound fertilizer containing N, P and K combined forms can simultaneously be produced. By the method, purity of monocalcium phosphate can be raised, and the produced special fertilizer for paddy rice has good absorptivity. Meanwhile, formaldehyde is added into a filtrate to prepare a controlled-release compound fertilizer. The produced special fertilizer for paddy rice can meet nutritional requirements of each period of growth cycle. By the use of the compound fertilizer, yield of paddy rice is raised greatly. The special fertilizer is an efficient compound fertilizer.

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Номер записи: 66
21-01-2015 дата публикации

Preparation method of nutritive fertilizer for leaf mustard

Номер: CN104291306A
Автор: CHEN XIAOHU, LIAO JIXING, GAO GUILONG, XIANG SHUANGLONG, XUE TAO, XU YUAN, LI MINGXIN, ZHU FEIWU, LI JIERUI, JIN HUIXIN
Принадлежит:

The invention relates to the technical field of the chemical industry and discloses a preparation method of a nutritive fertilizer for leaf mustard. According to the preparation method, the nutritive fertilizer for the leaf mustard is prepared by analyzing the proportions of nutritive elements needed by the growth of the leaf mustard on the basis of detecting the quantity of various nutritive elements absorbed by the leaf mustard from soil in the growth process. The nutritive fertilizer for the leaf mustard is prepared by virtue of the following steps: reacting phosphoric acid with carbamide to generate an intermediate; next, reacting the intermediate with an alkaline calcium salt, adjusting the content of nitrogen and phosphorus in the reaction liquid by crystalizing and separating out one part of calcium dihydrogen phosphate generated in the reaction in such a manner of strictly controlling the parameters in the reaction, and finally adding a certain amount of potassium and trace element ...

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Номер записи: 67
03-09-2014 дата публикации

Production method for tripotassium phosphate

Номер: CN104016324A
Автор: ZHOU YONG, CHEN XIAOHU, LIAO JIXING, ZHU FEIWU, ZHENG CHAO, ZHANG YI
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for tripotassium phosphate. A tripotassium phosphate product is prepared by directly reacting urea phosphate and potassium hydroxide according to a molar ratio of 1: 2.95-3.05 for 30-60 min at a reaction temperature of 40-80 DEG C, with stirring at a stirring speed of 30 r/min. The tripotassium phosphate product is prepared by directly reacting urea phosphate and potassium hydroxide, so that the whole process has no requirements for high energy consumption; raw materials can be obtained relatively easily; a process route is short and simple; and production cost of tripotassium phosphate is reduced. By adjusting the process route and controlling reaction conditions, the produced tripotassium phosphate completely meets a first level standard of industrial tripotassium phosphate.

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Номер записи: 68
07-01-2015 дата публикации

Preparation method of special fertilizer for kidney bean

Номер: CN104261373A
Автор: SHI XIUMING, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, XUE TAO, XIE FEI, TANG XIAONING
Принадлежит:

The invention relates to the technical field of chemical industry, and discloses a preparation method of a special fertilizer for kidney bean, which solves the following technical problems: the matching of the nutrient elements in the existing fertilizer does not conform to the demands of kidney bean for the nutrient elements, so that the fertilizer applied to the kidney bean can not be completely absorbed by the kidney bean, and the compounds of some elements residing in the soil change the soil structure and pollute the environment. According to the method, phosphoric acid and carbamide react to generate an intermediate, the intermediate reacts with alkaline potassium, and part of potassium dihydrogen phosphate generated by the reaction is crystallized to precipitate, so that the contents of nitrogen, phosphorus and potassium in the reaction solution are regulated to satisfy the demands for kidney bean growth. The special fertilizer for kidney bean is lower in production cost, can be ...

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Номер записи: 69
28-01-2015 дата публикации

Method for preparing calcium dihydrogen phosphate and preparing special fertilizer for sorghum as byproduct

Номер: CN104310359A
Автор: LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, LIN ZHONGJIAN, CHEN XIAOHU, WANG XIANWEI
Принадлежит:

The invention relates to the technical field of chemical industry, and especially relates to a method for preparing calcium dihydrogen phosphate and preparing a special fertilizer for sorghum as a byproduct. The temperature and other coefficients of the preparation technology of calcium dihydrogen phosphate from phosphoric acid through a wet process are changed, so the purity of the calcium dihydrogen phosphate product is improved, and the N, P and K compounded fertilizer is produced. The method improves the purity of calcium dihydrogen phosphate, and the produced special fertilizer for sorghum has high absorptivity; and formaldehyde is added to a filtrate to prepare the controlled release compound fertilizer. The produced special fertilizer for sorghum can meet the nutrition needs of sorghum in all stages of the growth period of sorghum, greatly increases the output of sorghum, and is an efficient compound fertilizer.

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Номер записи: 70
25-03-2015 дата публикации

Mono-ammonium phosphate produced by using wet process phosphoric acid and production method of mono-ammonium phosphate

Номер: CN104445121A
Автор: WEI FAZHAN, LIAO JIXING, ZHU FEIWU, SHI XIUMING
Принадлежит:

The invention relates to the technical field of mono-ammonium phosphate prepared by using wet process phosphoric acid, and in particular to mono-ammonium phosphate produced by using wet process phosphoric acid and a production method of the mono-ammonium phosphate. When an ammonia gas is introduced or liquid ammonia is added into impurities in phosphoric acid prepared by using the wet process phosphoric acid, the neutralization in mixed liquor is adjusted to 0.5-0.8 to generate a large amount of precipitates from the impurities in the phosphoric acid, separation treatment is carried out by using a separator, after phosphoric acid with higher purity is obtained, the ammonia gas or the liquid ammonia is introduced in the phosphoric acid, and the pH value of the phosphoric acid is controlled to obtain mono-ammonium phosphate slurry with higher purity, so that the purity of a mono-ammonium phosphate product is improved and the total nutrient in the mono-ammonium phosphate is 60.15-60.36%, wherein ...

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Номер записи: 71
27-08-2014 дата публикации

Method for preparing calcium sulfate dihydrate crystal whisker from phosphorus gypsum

Номер: CN104005086A
Автор: ZHANG YI, LIAO JIXING, XIONG CHENJIE, PENG BAOLIN, ZHU FEIWU
Принадлежит:

The present invention relates to the technical field of chemical raw material preparation, and particularly to a method for preparing calcium sulfate dihydrate crystal whisker from phosphorus gypsum. The method comprises the following steps: preparing calcium sulfate dihydrate without impurities, preparing a crystal whisker, washing, and drying to obtain the calcium sulfate dihydrate crystal whisker. By preheating hydrochloric acid and matching the hydrochloric acid with phosphorus gypsum at a certain ratio at a constant temperature, the reaction can proceed and the materials is not wasted, the impurities contained in the phosphorus gypsum can be properly removed maximatily, the impact rate of impurities on the generation of calcium sulfate dihydrate crystal whisker is decreased, the content of calcium sulfate component is increased, the production rate of calcium sulfate dihydrate crystal whisker is improved and the production costs of calcium sulfate dihydrate crystal whisker prepared ...

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Номер записи: 72
14-01-2015 дата публикации

Production method for preparing calcium hydrophosphate with special Chinese prickly ash fertilizer as byproduct

Номер: CN104276561A
Автор: WEI FAZHAN, CHEN XIAOHU, LIAO JIXING, GAO GUILONG, ZHU FEIWU, XUE TAO, LIN ZHONGJIAN, ZHAO WEIYI, ZENG SHU, WANG LIYUAN
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing calcium hydrophosphate with a special Chinese prickly ash fertilizer as a byproduct. Through analysis on the effective absorptive amount of nitrogen phosphorus potassium elements according to the fertilizer required by Chinese prickly ash, and adjustment and collocation of element content in a production process, the prepared composite fertilizer in a compound sate can meet the requirements of the Chinese prickly ash to the maximal extent while over-high cost caused by improper collocation of the elements in production of the composite fertilizer is reduced, and excessive elements are further prevented from being fed to soil to cause environmental pollution due to solidification of the composite fertilizer; meanwhile, the effective absorption rate of the prepared special Chinese prickly ash fertilizer is relatively high and can reach over 97.5%, nutrient elements ...

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Номер записи: 73
21-01-2015 дата публикации

Method for preparing monopotassium phosphate and co-producing special compound fertilizer for aleurites fordii

Номер: CN104291293A
Автор: PENG BAOLIN, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, XUE TAO, WANG XIANWEI, GU WENQUAN, XUE AN
Принадлежит:

The invention discloses a method for preparing a monopotassium phosphate and co-producing special compound fertilizer for aleurites fordii. The method comprises the following three steps: mixing raw materials to have a reaction, preparing monopotassium phosphate, and preparing a special compound fertilizer for aleurites fordii. The compound fertilizer, besides containing enough NPK elements, also contains nutrient elements such as calcium, iron and magnesium, required by aleurites fordii, so that the compound fertilizer provides guarantees for the normal production of aleurites fordii and increase the economic value of aleurites fordii.

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Номер записи: 74
07-01-2015 дата публикации

Production method for preparing ammonium dihydrogen phosphate with special astragalus membranaceus fertilizer as byproduct

Номер: CN104261374A
Автор: ZHAO XIANMING, GAO GUILONG, LIAO JIXING, CHEN XIAOHU, SHI XIUMING, XUE TAO, ZHU FEIWU, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention relates to the technical field of chemical engineering, and particularly relates to a production method for preparing ammonium dihydrogen phosphate with a special astragalus membranaceus fertilizer as a byproduct. Through analysis on requirements on nutritional elements in the astragalus membranaceus growth process, analysis and realization of fertilization conditions of traditional astragalus membranaceus planting, research and discussion of the absorption conditions of crops on nitrogen, phosphorus and potassium, and analysis by combining with the defects in the preparation process of an ammonium dihydrogen phosphate product, a production process of the special fertilizer for astragalus membranaceus is combined with a preparation process of the ammonium dihydrogen phosphate product, so that the preparation process of the ammonium dihydrogen phosphate product and the preparation process of the special fertilizer for the astragalus membranaceus are complementary; production ...

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Номер записи: 75
21-01-2015 дата публикации

Production method for preparing tripotassium phosphate and co-producing fertilizer special for kiwi fruits

Номер: CN104291302A
Автор: LIAO JIXING, CHEN XIAOHU, ZHU FEIWU, GAO GUILONG, PENG BAOLIN, XUE TAO, ZHOU YONG
Принадлежит:

The invention relates to the technical field of chemical industry, and in particular relates to a production method for preparing tripotassium phosphate and co-producing a fertilizer special for kiwi fruits. The production method comprises the following steps: according to a fertilizer required by the kiwi fruits, analyzing the effective absorption quantities of nitrogen, phosphorus and potassium elements, and adjusting and collocating the element content in a production technological process to ensure that a prepared combination type compound fertilizer can meet the requirements of the kiwi fruits to a highest extent, the excessive cost caused by improper element collocation in the production of the compound fertilizer can be reduced, and the environmental pollution caused by solidification of the compound fertilizer because excessive elements are fed into soil can be further avoided; the impurity removal cost for preparing a tripotassium phosphate product by using a conventional wet-process ...

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Номер записи: 76
21-01-2015 дата публикации

Method for preparing monopotassium phosphate and co-producing special compound fertilizer for highland barley

Номер: CN104291295A
Автор: LIAO JIXING, GAO GUILONG, PENG BAOLIN, CHEN XIAOHU, ZHU FEIWU, XUE TAO, ZHOU YONG, ZHAO WEIYI, ZENG SHU
Принадлежит:

The invention discloses a method for preparing monopotassium phosphate and co-producing a special compound fertilizer for highland barley. The method comprises the following steps: carrying out a mixed reaction on raw materials; preparing monopotassium phosphate; and preparing the special compound fertilizer for highland barley. The purity of monopotassium phosphate prepared by the method is relatively high. The special compound fertilizer for highland barley is prepared by processing and adjusting the filtrate in the production process, thereby providing sufficient nutrition to normal growth of highland barley.

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Номер записи: 77
21-05-2014 дата публикации

Method for preparing monopotassium phosphate by using wet-process phosphoric acid

Номер: CN103803518A
Автор: XU KUI, CHEN XIAOHU, LIAO JIXING, ZHU FEIWU, ZHENG CHAO, PENG BAOLIN, HAN CHAOYING, WANG XIANWEI, ZHOU YONG, TANG XIAONING, LI JIWEI, WANG RUI
Принадлежит:

The invention discloses a method for preparing monopotassium phosphate by using wet-process phosphoric acid. The method comprises the following steps: reacting carbonyl diamide and wet-process phosphoric acid to obtain an intermediate; reacting the intermediate and potassium hydroxide to prepare a monopotassium phosphate product. The method has the advantages of short process route, low energy consumption, stable product quality, low production cost, convenience in operation and safety in production. A side product, namely, slurry can be recycled completely, an entire production process is environment-friendly, clean and free from pollution, and no waste gas, waste water or waste residues are discharged. A response is made to the policy calling of energy saving, emission reduction and clean production, the problems of complex process, instable product quality, high energy consumption and environmental pollution existing in the prior art are solved, and the purity of the obtained monopotassium ...

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Номер записи: 78
28-01-2015 дата публикации

Method for preparing ammonium dihydrogen phosphate and preparing special composite fertilizer for cucumber as byproduct

Номер: CN104310335A
Автор: CHEN XIAOHU, LIAO JIXING, TANG XIAONING, ZHU FEIWU, WANG SHUAISHUAI, XU YUAN, LI MINGXIN, ZHAO JINGXING, LI JIERUI, XIONG CHENJIE
Принадлежит:

The invention discloses a method for preparing ammonium dihydrogen phosphate and preparing a special composite fertilizer for cucumber as a byproduct. The method comprises the steps of preparing ammonium dihydrogen phosphate and preparing the special composite fertilizer for cucumber. The special composite fertilizer for cucumber is prepared through subsequent processing adjustment of a mother liquor generated in the preparation process of ammonium dihydrogen phosphate.

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Номер записи: 79