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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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Применить Всего найдено 4. Отображено 4.
04-07-2012 дата публикации

After-treatment technology of Beckmann gas-phase rearrangement S-1 full-silica molecular sieve based catalyst

Номер: CN102527424A
Автор: Liu Wen, Zhang Yuan, Yuan Haipeng, Wang Shaowei, Qian Zhen, Wang Zhiwen, Song Hui, Wang Yuanping, Zhang Meng, Wang Haiguo, Liu Junsheng, Liang Ying, Shi Wentao, Zhang Shunguang, Cao Zhenyan, Sun Shiqian, Yuan Xuemin, Zhou Mingsheng
Принадлежит:

The invention discloses an after-treatment technology of a Beckmann gas-phase rearrangement S-1 full-silica molecular sieve based catalyst, which comprises the following steps of: preparing a mixed solution of strong acid with a certain concentration and hydrofluoric acid in proportion, weighing a certain mass of S-1 full-silica molecular sieve based catalyst and putting into a reactor, measuring out the prepared mixed solution of strong acid and hydrofluoric acid based on the mass of the catalyst and pouring into the reactor, starting stirring, maintaining a certain rotation speed, stopping stirring after reacting for a period of time at room temperature, and washing by using de-ionized water to be neutral. According to the invention, By changing the formula of an S-1 full-silica molecular sieve after-treatment solution and using the mixed solution of strong acid and hydrofluoric acid as an after-treatment solution, the after treatment is carried out at room temperature dropping from about ...

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Номер записи: 1
11-07-2012 дата публикации

Gel granulation method

Номер: CN102553640A
Автор: Yuan Xuemin, Sun Shiqian, Qian Zhen, Zhang Meng, Wang Zhiwen, Cao Zhenyan, Wang Haiguo, Liu Junsheng, Zhang Yuan, Liu Wen, Wang Yuanping, Song Hui, Wang Shaowei, Yuan Haipeng, Deng Zhaojing
Принадлежит:

The invention discloses a gel granulation method, which comprises the following steps of: (1) mixing pseudoboehmite and de-ionized water, uniformly stirring, holding in a hydrothermal kettle, placing in a drying oven and performing hydrothermal treatment; (2) centrifuging and drying a product obtained after the hydrothermal treatment to obtain the pseudoboehmite after the hydrothermal treatment; (3) adding the de-ionized water and stirring to obtain slurry A; (4) adding SAPO-34 molecular sieve and fully stirring to obtain slurry B; (5) adding kaolin and stirring to obtain slurry C; (6) adding nitric acid aqueous solution into the slurry C and fully stirring to obtain slurry D; (7) dying the slurry D and grinding to obtain powder E; and (8) roasting the powder E to obtain a gel granulation forming catalyst. The gel granulation forming catalyst prepared by the method shows better catalytic performance in MTO reaction; the negative effect of the pseudoboehmite component in the catalyst on ...

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Номер записи: 2
25-07-2012 дата публикации

Gasification system for preparing cyclohexanone oxime in caprolactam by Beckmann gas phase rearrangement

Номер: CN102603633A
Автор: Qian Zhen, Liu Wen, Song Hui, Wang Yuanping, Wang Zhiwen, Zhang Yuan, Yuan Haipeng, Wang Shaowei, Zhang Meng, Wang Haiguo, Liu Junsheng, Liang Ying, Shi Wentao, Yang Kejian, Yan Yonghua, Liu Xinwei, Cao Zhenyan, Sun Shiqian, Zhang Shunguang, Zuo Yizan
Принадлежит:

The invention discloses a gasification system for preparing cyclohexanone oxime in caprolactam by Beckmann gas phase rearrangement, which comprises a high-pressure material distribution kettle, wherein the high-pressure material distribution kettle is connected with an inlet on an upper end of a gasification tower through a pipe; a spray nozzle connected with an air pipe and a nebulizer connected with a nitrogen pipe are respectively arranged inside the inlet; an input end of the gasification tower is communicated with the air pipe of the spray nozzle; the nebulizer is arranged below the spray nozzle; an outlet on a lower end of the gasification tower is connected with the inlet on the lower end of a fluidized bed heater through the pipe; the outlet on the upper end of the fluidized bed heater is connected with the inlet of a condenser through the pipe; the outlet of the condenser is connected with a material collecting kettle; and the material collecting kettle is connected with a fractional ...

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Номер записи: 3
11-07-2012 дата публикации

Method for catalyzing propene epoxidation by taking Titanium Silicalite-1(TS-1) as catalyst

Номер: CN102558100A
Автор: Wang Zhiyuan, Yuan Xuemin, Wang Shaowei, Yuan Haipeng, Zhang Yuan, Liu Wen, Wang Yuanping, Song Hui, Wang Zhiwen, Liang Ying, Qian Zhen, Zhang Meng, Wang Haiguo, Liu Junsheng, Zhang Shunguang, Zuo Yizan, Cao Zhenyan, Sun Shiqian
Принадлежит:

The invention discloses a method for catalyzing propene epoxidation by taking Titanium Silicalite-1(TS-1) as a catalyst, wherein hydrogen peroxide is taken as an oxidant, and Titanium Silicalite-1(TS-1) is taken as the catalyst. A ring-opening reaction of epoxypropare and a solvent can be inhibited effectively by adding a small amount of inorganic alkali buffer solution in a liquid reactant; a buffer agent can be ammonium salt, borate, phosphate or other alkali buffer solvents; and an inorganic salt alkali buffer solution is a mixed solution composed of a weak-base salt and conjugate acid thereof and can be taken from weak base of ammonium salt, borate, phosphate or carbonate, and the corresponding negative ion is Cl<->, Br<->, NO<3-> or SO4<2->, and the positive ion is Li<+>, Na<+> or K<+>. The selectivity of epoxypropare can reach 97.49%, the yield of the epoxypropare can reach 96.56%, and the conversion rate of hydrogen peroxide can reach 99.12%.

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Номер записи: 4