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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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Форма поиска

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 24. Отображено 24.
23-06-2023 дата публикации

Garden landscape lamp cleaning device

Номер: CN116274103A
Автор: ZHU JIANMIN, ZHANG YUNXIA, USHIE, CHANG XUESONG, WANG TIANHAO, GUO LIQIN, ZHAO WENXIN
Принадлежит:

The invention discloses a garden landscape lamp cleaning device, and belongs to the technical field of landscape lamp cleaning, the garden landscape lamp cleaning device comprises a first fixing disc and a second fixing disc which are arranged in the vertical direction, the first fixing disc and the second fixing disc are connected through a rotating shaft, and the inner side of the first fixing disc and the inner side of the second fixing disc are elastically connected with pressing plates; a first spring is fixedly connected between the first fixed disc and the second fixed disc; through alternate extrusion of two limiting plates on a rotating shaft and sliding rods on a first fixing disc and a second fixing disc, the first fixing disc and the second fixing disc can be alternately promoted to move upwards in cooperation with use of a first spring, and in the moving process, cleaning liquid in grooves is squeezed out through spraying holes by means of a sealing plate; and in the cleaning ...

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Номер записи: 1
07-04-2023 дата публикации

Device and method for installing pore water pressure gauge in soft soil layer

Номер: CN115928684A
Автор: YU YONGTANG, CAO JINGYUAN, LIU CHAO, TANG LIYUN, ZHANG HONGLI, WANG XIAOYONG, LIANG YI, YANG SHAOFEI, TANG HAO, ZENG TAO, HUANG XIN, ZHU JIANMIN
Принадлежит:

The invention discloses a device and method for installing a pore water pressure gauge in a soft soil layer, and the method comprises the steps: installing the pore water pressure gauge in an installation cylinder, carrying out the assembly, and inserting an installation rod into the installation cylinder; the mounting cylinder is put down into a drilled burying drill hole along with the mounting rod, a drilling machine is used for applying downward pressure to the mounting rod, and the mounting cylinder is pressed into a soft soil layer at the bottom of the hole until the mounting cylinder reaches the burying depth of the monitoring point on the lowermost side; the mounting rope is fixed to the ground, meanwhile, the mounting rod is lifted section by section, the mounting cylinder and the mounting rod are automatically separated, and the mounting cylinder is mounted to the preset monitoring depth; and a hole sealing soil column is lowered between the adjacent pore water pressure gauges ...

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Номер записи: 2
14-07-2023 дата публикации

Angle self-locking medical steel wire scissors

Номер: CN116422968A
Автор: ZHU JIANMIN, ZHU ZHENYAN
Принадлежит:

The invention relates to the technical field of medical steel wire shears, in particular to angle self-locking medical steel wire shears which comprise a steel wire shear body and a rolling steel wire, a connecting angle part is arranged on the outer wall of one side of the steel wire shear body and close to the tail end, and a connecting column is fixedly mounted on the surface of a tong head on one side of the steel wire shear body; the outer side of one end of the connecting column is fixedly connected with a fixing rod, a clamping piece is fixedly installed on the outer side of the fixing rod, a notch is formed in the inner side of the clamping piece, the winding steel wire is located in one end of the clamping piece, and one end of the winding steel wire penetrates through the notch and is close to the position between the two sets of jaws close to each other. A straightening part is arranged on the outer side of a rotating shaft of the steel wire shear body, and rolling parts are ...

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Номер записи: 3
23-06-2023 дата публикации

Catalyst for preparing block polyether and preparation method of block polyether

Номер: CN116284735A
Автор: CHEN YANGYING, ZHAO CHUNYU, TIAN XIN, SUN HUIJUN, ZHU JIANMIN, LIU ZHAOBIN, DONG ZHENPENG
Принадлежит:

The invention relates to a catalyst for preparing block polyether and a preparation method of the block polyether, the catalyst comprises a first component and a second component, the first component is selected from one or a combination of more of aluminum trihalide and/or alkyl aluminum halide, and the second component is selected from imidazole N-heterocyclic carbene; the molar ratio of the first component to the second component is (0.1-1): 1. According to the catalyst, through concerted catalysis of the two components, high-molecular-weight block polyether with the molecular weight basically consistent with the designed target molecular weight and the molecular weight distribution coefficient smaller than 1.1 can be prepared through catalysis, and the yield can reach 98%-99.5%.

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Номер записи: 4
27-06-2023 дата публикации

In-situ loess collapsibility coefficient testing device and method

Номер: CN116335212A
Автор: ZHU JIANMIN, ZHENG JIANGUO, YU YONGTANG, LIU ZHENGHONG, XIA HUI, HUANG XIN
Принадлежит:

The invention discloses an in-situ loess collapsibility coefficient testing device and method. The device comprises a testing probe extending into a drill hole, an adjusting component arranged at the top of the drill hole and driving the testing probe to be adjusted in the depth direction of the drill hole, a water supply device arranged at the top of the drill hole and a data acquisition module connected with the testing probe. The method comprises the following steps: 1, forming two drill holes and lowering a loess collapsibility in-situ testing device; 2, adjusting an in-situ loess collapsibility coefficient testing device in one drill hole; 3, loading detection of a hole bottom soil body in one drill hole; fourthly, loading detection is carried out when water injection of a hole bottom soil body in one drill hole is saturated; 5, loading detection is carried out when water injection of the hole bottom soil body in the other drill hole is saturated; and 6, obtaining an in-situ loess ...

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Номер записи: 5
30-05-2023 дата публикации

Preparation method of high-temperature-resistant composite polyimide nanofiber membrane for filtration

Номер: CN116173756A
Автор: HU ZHIZHI, MA KE, ZHU JIANMIN, LIU ZHAOBIN, SONG ENJUN, FU YANG, ZHAO HONGBIN, LI HEMING, WANG XINMING, ZHA YUPAN, SUN JIA
Принадлежит:

The invention relates to a preparation method of a high-temperature-resistant composite polyimide nanofiber membrane for filtration, which comprises the following steps: 1) compounding tetrafluoroethylene fibers carded into a net with basalt fiber base cloth through a needling machine to form three-dimensional blanket-shaped base cloth; 2) dissolving a diamine monomer into dimethylacetamide to obtain a diamine solution, adding crown ether into the diamine solution, stirring, and then adding a dianhydride monomer to obtain a polyamide acid solution; 3) adding a dehydrating agent and a catalyst for chemical imidization to obtain a polyimide solution; 4) forming polyimide fibers on the collector by using an electrostatic spinning method; performing low-temperature thermal imidization on the polyimide fiber again; and 6) placing the polyimide fiber membrane between the two layers of base cloth. The method has the advantages that the electrostatic spinning nanofiber is prepared by adopting a ...

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Номер записи: 6
29-06-2016 дата публикации

Servo follow -up forestock material mechanism

Номер: CN0205341587U
Автор: ZHOU YAN, YAN YAN, ZHU JIANMIN, FU GANG
Принадлежит:

... 本实用新型涉及一种伺服随动前托料机构，固定支座连接在折弯机工作台上，固定支座上安装T型丝杠，T型丝杠通过T型丝杠螺母连接滑座，固定支座底部安装伺服电机A，伺服电机A通过同步带轮A及同步带连接T型丝杠；滑座上端通过旋转轴转动连接翻板，翻板下方通过支座与丝杠的顶端铰接，丝杠通过丝杠螺母连接同步带轮B，同步带轮B通过同步带连接伺服电机B；T形丝杠上安装用于确定滑座垂直运动位置的电感式接近开关A；丝杠上安装用于确定翻板圆周运动位置的电感式接近开关B。本实用新型结构简单、紧凑，合理，易于安装和拆卸，解决了现有的折弯机工作台的托料装置产品质量不稳定、操作人员工作强度大的问题，使折弯的工件在精度和效率上大幅提升。 ...

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Номер записи: 7
02-05-2023 дата публикации

Crystal form of febantel and preparation method thereof

Номер: CN116041234A
Автор: ZHU JIANMIN, WANG XUECHENG, SU WENJIE, FU YAN, GAO XINYU, XU JING, HE XIAOWEI
Принадлежит:

The invention discloses a novel febantel crystal form as shown in a formula I and a preparation method thereof. The characteristic peaks of a crystal form structure A are positioned at 9.53 degrees, 19.12 degrees, 20.82 degrees, 22.78 degrees, 24.90 degrees and 27.25 degrees; dSC (differential scanning calorimetry) data shows that heat absorption is displayed at a peak value of 125.9 DEG C; the preparation method comprises the following steps: dissolving a certain amount of febantel in a certain amount of organic solvent, heating for dissolving, and crystallizing at room temperature to obtain the febantel crystal structure A; the invention also discloses a pharmaceutical composition containing the crystal forms. The pharmaceutical composition is composed of a crystal form structure A and pharmaceutically acceptable auxiliary materials.

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Номер записи: 8
11-04-2023 дата публикации

Ground surface and underground integrated settlement monitoring device and method

Номер: CN115950396A
Автор: DONG BAOZHI, ZHU JIANMIN, WEN ZHE, WANG XIAOYONG, WEN YUKUN, YU YONGTANG, FENG ZHENJIA, TANG LIYUN, WU WANXIA, LIANG YI, YANG SHAOFEI, ZHANG ZIDONG, CAO JINGYUAN, HUANG XIN, YAO ZHENWANG, ZENG TAO, YANG JUAN, ZHAO XIA, WEN CHENYU, CHENG GONG
Принадлежит:

The invention discloses an earth surface and underground integrated settlement monitoring device and method, and belongs to the technical field of geotechnical engineering monitoring, and the method specifically comprises the following steps: firstly, pre-drilling an embedding hole, and assembling the earth surface and underground integrated settlement monitoring device; then the earth surface and underground integrated settlement monitoring device is hoisted and placed into the burying hole and is backfilled and compacted after being fixed; and finally, installing a Beidou monitoring system, and carrying out data acquisition and processing through an earth surface and underground integrated settlement monitoring device. The earth surface and underground integrated settlement monitoring device comprises an automatic data acquisition box on the ground, underground settlement monitoring equipment and earth surface settlement monitoring equipment, and the earth surface settlement monitoring ...

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Номер записи: 9
21-11-2019 дата публикации

COMPOUND, COMPLEX, PREPARATION METHOD THEREOF, AND USE THEREOF

Номер: WO2019218868A1
Автор: ZHU, Jianmin, LIU, Zhaobin, DONG, Zhenpeng, GU, Xiaohua, YI, Yuming
Принадлежит:

The present disclosure provides a compound, a complex, a preparation method thereof, and a use thereof. The compound is represented by the following structural formula, in which R1 to R10 are the same or different and are each independently selected from hydrogen, a hydrocarbon group having a carbon number of C1 to C16, a substituted hydrocarbon group, an alkoxy group, an alkylthio group, an alkylamino group, a haloalkylthio group, a halogen-substituted alkoxy group, a halogen-substituted alkylamino group, an aryloxy group, an arylthio group, an arylamino group, a diphenylphosphino group, a halogen group, a nitro group, or a nitrile group. The complex of one embodiment of the present disclosure has a high catalytic effect, and can be used to prepare a highly branched, controllable, low molecular weight polymer with a high activity.

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Номер записи: 10
14-04-2023 дата публикации

Preparation method of N-methyl-bis (2, 4-dimethylphenyl imine methyl) amine

Номер: CN115960016A
Автор: ZHU JIANMIN, SU WENJIE, WANG XUECHENG, HE XIAOWEI, GAO XINYU
Принадлежит:

The invention discloses a preparation method of N-methyl-bis (2, 4-dimethylphenyl imine methyl) amine. The method comprises the following steps: by taking trimethyl orthoformate, 2, 4-dimethylaniline and N-methylformamide as initial raw materials, carrying out condensation reaction by a one-pot method under the catalysis of an organic base catalyst, and carrying out reduced pressure distillation, decoloration, crystallization, suction filtration and drying to obtain the N-methyl-bis (2, 4-dimethylphenyl imine methyl) amine. The organic base catalyst is used for replacing a Lewis acid catalyst and 2, 4-dimethylaniline hydrochloride, and the step of preparing the catalyst 2, 4-dimethylaniline hydrochloride is omitted. Trimethyl orthoformate is used for replacing triethyl orthoformate, so that the reaction activity is improved, the reaction temperature is reduced, and the reaction time is shortened. The purity of the prepared N-methyl-bis (2, 4-dimethylphenyl imine methyl) amine can reach ...

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Номер записи: 11
14-04-2023 дата публикации

Crystal form of albendazole and preparation method thereof

Номер: CN115960050A
Автор: ZHU JIANMIN, HE XIAOWEI, WANG XUECHENG, SU WENJIE, FU YAN, XU JING, WU YUJUN
Принадлежит:

The invention discloses a crystal form of albendazole as shown in a formula I and a preparation method of the crystal form. The characteristic peaks of a crystal form structure A are located at 6.90 degrees, 7.26 degrees, 11.28 degrees, 13.82 degrees, 17.92 degrees, 19.44 degrees and 20.69 degrees; dSC (differential scanning calorimetry) data shows that heat absorption is shown at peak values of 192.5 DEG C and 364.0 DEG C; the preparation method comprises the following steps: dissolving a certain amount of albendazole in a certain amount of an organic solvent, then heating and dissolving, and crystallizing at room temperature to obtain the albendazole crystal structure A; the invention relates to a pharmaceutical composition, which consists of a crystal structure A of a compound shown as a formula I and pharmaceutically acceptable auxiliary materials.

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Номер записи: 12
12-05-2023 дата публикации

Preparation method and application of ishikawa reagent

Номер: CN116102431A
Автор: ZHU JIANMIN, LIU HUA, ZHAO GANG, PAN JIANLIU, BAI YUXIN
Принадлежит:

The invention discloses a preparation method of an ishikawa reagent and an application of the ishikawa reagent. The preparation method comprises the following steps: mixing and reacting dichloromethane solutions of hexafluoropropylene and diethylamine in equal molar ratio in a microreactor at normal temperature, and reacting in a tubular reactor to obtain the ishikawa reagent. When the reaction device is used, only common chilled water is needed for cooling, the reaction does not need low-temperature (below-18 DEG C) reaction, raw materials and auxiliary materials do not need to be greatly excessive, and the fluoridation can be complete in subsequent fluoridation. The method has the advantages of simplicity in operation, capability of realizing continuous operation, energy conservation, environment friendliness, high working efficiency, cost reduction, easiness in industrial production and the like.

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Номер записи: 13
14-04-2023 дата публикации

Cement admixture and preparation method thereof

Номер: CN115960320A
Автор: ZHU JIANMIN, LIU ZHAOBIN, DONG ZHENPENG, LIU XIAOJIE, HIRATA TSUYOSHI
Принадлежит:

The cement admixture comprises a copolymer (A), an unsaturated (poly) alkylene glycol ether monomer (a) and alkenyl-free (poly) ethylene glycol (B), the copolymer (A) comprises a unit I and a unit II, the unit I is an unsaturated (poly) alkylene glycol ether monomer (a), and the unit II is an unsaturated carboxylic acid monomer (b). When the viscosity reduction type polycarboxylate superplasticizer is synthesized, the polyether monomer containing a long carbon chain is added, so that the synthesized polycarboxylate superplasticizer contains a long side chain structure, the steric hindrance of the polycarboxylate superplasticizer is increased, the space stabilization effect of the polycarboxylate superplasticizer is more remarkable, and the polycarboxylate superplasticizer has an obvious viscosity reduction effect; the steric hindrance effect can be better exerted when the composite material acts with sand and gravel materials such as cement, and the composite material is low in cost, low ...

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Номер записи: 14
27-06-2023 дата публикации

Catalyst for preparing block polyether and preparation method of block polyether

Номер: CN116333294A
Автор: TIAN XIN, CHEN YANGYING, ZHAO CHUNYU, SUN HUIJUN, ZHU JIANMIN, LIU ZHAOBIN, DONG ZHENPENG
Принадлежит:

The invention relates to a catalyst for preparing block polyether and a preparation method of the block polyether. The catalyst comprises a first component, a second component and a third component, the first component is selected from one or a combination of more of aluminum halide and/or alkyl aluminum halide, the second component is selected from N-heterocyclic carbene, and the third component is selected from one or a combination of more of tartrate and/or p-toluenesulfonate; the molar ratio of the first component to the second component to the third component is (0.1-3): 1: (0.01-0.05). The three components in the catalytic system have synergistic interaction, and the catalyst has excellent catalytic activity; the synthesized high-molecular-weight block polyether is narrow in molecular weight distribution, low in double bond content and low in dioxane content.

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Номер записи: 15
11-07-2023 дата публикации

Industrial preparation method of gamma-Al2O3 fiber

Номер: CN116409806A
Автор: SHEN YUGE, GUO CHENGYU, WANG YUJUN, YU ZHIYUAN, WEI JINYING, ZHU JIANMIN, ZHAO SHENYUAN, PANG XINMEI, ZHANG SHANG, CHI KEBIN
Принадлежит:

The invention discloses a gamma-Al2O3 fiber industrial preparation method which is characterized in that a microreactor is used for preparation, the microreactor comprises a reactor body, a first distributor and a second distributor are arranged in the reactor body from top to bottom, and the reactor body is divided into an upper chamber, a middle chamber and a lower chamber; a first feed port is formed in the top of the reactor body, a first discharge port is formed in the bottom of the reactor body, a second feed port is formed in one side of the side wall of the lower cavity, a second discharge port is formed in the other side of the side wall of the lower cavity, the second feed port is higher than the second discharge port, and the second discharge port is communicated with the middle cavity through a circulating pipeline. By using the method, the mass transfer rate of the reaction system is improved, the viscosity of the product in the micro-reactor is reduced, the reactor is not ...

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Номер записи: 16
11-08-2023 дата публикации

Novel screw rust removal device for metal bolt

Номер: CN116575036A
Автор: ZHU JIANMIN, ZHU ZHENYAN
Принадлежит:

The invention relates to the technical field of screw rust removal, in particular to a novel metal bolt screw rust removal device which comprises a machining table, advancing mechanisms are arranged on the two sides of the machining table, the moving ends of the advancing mechanisms are fixedly connected with the bottom end of a moving frame, and a lifting mechanism is arranged at the upper end of the moving frame. The movable end of the lifting mechanism is fixedly connected with a connecting piece arranged on the outer side of the containing box, a cleaning and drying mechanism is arranged in the middle of the upper end of the movable frame and located above the containing box, a rust removal box and a cleaning box are sequentially arranged on the upper surface of the machining table, and a filtering mechanism is arranged in the rust removal box. The cleaning box and the cleaning and drying mechanism are arranged, so that a plurality of derusted bolts can be effectively cleaned and dried ...

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Номер записи: 17
23-06-2023 дата публикации

Special-shaped pipe provided with slide way and machining equipment of special-shaped pipe

Номер: CN116293096A
Автор: GONG SHAOQING, LIU XINING, LIU XU, QIAN ZHANSHUN, WANG KEQI, ZHU JIANMIN, ZHAO PENG
Принадлежит:

The invention relates to the technical field of special-shaped pipes, in particular to a special-shaped pipe provided with a slide way and machining equipment thereof.The special-shaped pipe comprises two first connecting parts and two second connecting parts, the first connecting parts are of a U-shaped structure, openings of the first connecting parts are vertically opposite, and the second connecting parts are of a concave structure, and openings of the second connecting parts are bilaterally opposite; the first connecting parts are fixedly connected through the corresponding second connecting parts, and the first connecting parts and the second connecting parts form a closed I-shaped structure. According to the special-shaped pipe, the slideway can be arranged on the special-shaped pipe, so that the slideway is prevented from being welded on the special-shaped pipe on the premise that the purpose that the roller slides on the slideway is achieved, the overall weight is reduced, and ...

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Номер записи: 18
15-08-2023 дата публикации

Liquid material freeze drying device and method

Номер: CN116592603A
Автор: QI YIZHOU, XU BO, ZHU JIANMIN, QI PEIZHOU, ZHANG QIANG
Принадлежит:

The invention provides a liquid material freeze-drying device and method, and relates to the field of biological experiment equipment, the liquid material freeze-drying device comprises a sample rack used for placing at least one sample tube filled with a liquid sample; the rotating unit is used for driving the sample holder to rotate, so that the liquid sample is attached to the inner wall surface of the sample tube to dynamically flow; the temperature adjusting unit is used for cooling the sample tube, so that the liquid sample is frozen on the inner wall surface of the sample tube; and the sublimation drying unit is used for carrying out sublimation drying treatment on the liquid sample frozen on the inner wall surface of the sample tube so as to obtain a freeze-dried sample. By adopting the equipment provided by the embodiment of the invention, the liquid sample is uniformly frozen on the inner wall of the container, so that during sublimation operation, the sublimation area is greatly ...

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Номер записи: 19
22-08-2023 дата публикации

Rod shearing device with novel force arm assembly

Номер: CN116616884A
Автор: ZHU JIANMIN, ZHU ZHENYAN
Принадлежит:

The rod shearing device with the novel force arm assembly comprises a protective cylinder, a shearing assembly used for shearing a fixed rod is arranged on the inner side of the protective cylinder, and a limiting plate used for limiting the shearing assembly is fixedly connected to the upper end of the protective cylinder; an adjusting assembly for adjusting the cutting assembly is fixedly connected to the inner wall of the protection barrel, an illumination assembly for illumination is arranged in the protection barrel, and five sets of openings are formed in the lower end of the protection barrel. The sheared nail rod can be conveniently taken out; the interior of the wound can be illuminated, the shearing accuracy is further ensured, the shearing assembly can be supported, and errors are reduced.

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Номер записи: 20
06-06-2023 дата публикации

Eddy current type hypergravity field experiment device

Номер: CN116212808A
Автор: XU BO, QI YIZHOU, ZHU JIANMIN, QI PEIZHOU, ZHANG QIANG
Принадлежит:

The invention discloses an eddy current type hypergravity field experimental device. The device comprises a motor, an eccentric shaft, a rotating table and a sample tube carrier which are sequentially arranged from bottom to top, the motor comprises a rotating shaft, and the eccentric shaft is used for connecting the rotating shaft and the center of the rotating table, so that the rotating shaft of the motor is not coaxial with the center of the rotating table; the sample tube carrying frame is fixed to the top of the rotating table, the bottom face of the sample tube carrying frame is parallel to the top face of the rotating table, and the bottom face of the sample tube carrying frame is perpendicular to the eccentric shaft; the sample tube carrying frame is provided with one containing groove or a plurality of containing grooves arranged in parallel, and the containing grooves are used for fixing one sample tube or a plurality of sample tubes arranged in parallel. The device is simple ...

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Номер записи: 21
07-07-2023 дата публикации

Method for detecting benzene residues in levamisole hydrochloride

Номер: CN116399967A
Автор: ZHU JIANMIN, SU WENJIE, LI JIANGFENG, XU JINHUI, HE YU, SUN JIADI, GAO JIAN
Принадлежит:

The invention relates to a method for detecting benzene residues in levamisole hydrochloride. The method comprises the following steps: 1) preparing levamisole hydrochloride into a solution; 2) heating to volatilize the volatile solvent from the solution until balance is achieved; and (3) injecting overhead gas in the headspace bottle into a gas chromatograph for separation. When a sample solution is prepared, a neutralization method is adopted, and acid is neutralized by weak-base ammonia water with the same molar weight as hydrochloric acid contained in a sample, so that the sample solution is close to neutral. Therefore, the accuracy of the detection result is ensured, and the service life of the chromatographic column is prolonged. According to the method for detecting the benzene residues in the levamisole hydrochloride, the separation degree is larger than 1.5, the linear range of the benzene residues is 0.6-4 ppm, and RSD% of the peak area of a reproducibility test solvent is smaller ...

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Номер записи: 22
16-05-2023 дата публикации

Glyphosate wastewater treatment device and treatment method

Номер: CN116119823A
Автор: ZOU JIAN, QIN HONG, WANG SHUN, ZHU JIANMIN, FAN SHUFEN, FAN WEIXIN
Принадлежит:

The invention relates to a glyphosate wastewater treatment device and a glyphosate wastewater treatment method. The device comprises an anoxic tank, a micro-aerobic tank, an aerobic tank, a gas stripping tank and a water outlet tank which are sequentially arranged in a sewage flowing direction, a water inlet is formed in the upper part of the front end of the anoxic tank, and the top of the rear end is connected with the micro-aerobic tank through an overflow port; a microporous aerator is arranged in the micro-aerobic tank, and the micro-aerobic tank is communicated with the aerobic tank through an overflow port; an aeration pipe is arranged in the aerobic tank, and the bottom of the aeration pipe is communicated with the gas stripping tank; a gas stripping pump extending into the bottom is arranged in the gas stripping tank and is connected with a return pipe to the anoxic tank; a top overflow port of the gas stripping tank is communicated with the water outlet tank; and a water outlet ...

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Номер записи: 23
29-08-2023 дата публикации

Preparation method of rafoxanide

Номер: CN116655487A
Автор: ZHU JIANMIN, FU YAN, WANG XUECHENG, LI WENMIN, MENG PEIYU, JIANG ZELONG
Принадлежит:

The invention discloses a preparation method of rafoxanide. The method comprises the following steps: by taking 3, 5-diiodosalicylic acid as an initial raw material, adding thionyl chloride in a non-polar organic solvent under the catalysis of a catalyst, carrying out chlorination reaction to generate 3, 5-diiodosalicyloyl chloride, and carrying out condensation reaction on the 3, 5-diiodosalicyloyl chloride and 4-amino-2-chlorphenyl-p-chlorphenyl ether in a ketone solvent to obtain the rafoxanide. The method is simple to operate, high in yield, green, environment-friendly and easy for industrial production, the purity can reach 99.8% or above, the content of deiodinated impurities is less than 0.1%, and the content of bimolecular impurities is less than 0.1%.

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Номер записи: 24