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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 9. Отображено 9.
14-01-2015 дата публикации

Device and method for reducing chlorine ion content in dimethyldichlorosilance hydrolysate

Номер: CN104277067A
Автор: CHENG JIZENG, CUI XING'AN, ZHOU MAIYOU, LIU FEI, ZUO JINGHUI, WEI QINGKE
Принадлежит:

The invention discloses a device and a method for reducing chlorine ion content in dimethyldichlorosilance hydrolysate. The device comprises a dechlorinating device, a pressurized circulating pump and a separator, wherein the bottom side part of the dechlorinating device is connected with a water replenishing pipeline and a hydrolysate conveying pipeline; an inlet of the pressurized circulating pump is connected with a storage groove; an outlet is connected with the bottom of the dechlorinating device; the inlet of the side part of the separator is connected with a dechlorinating device outlet pipeline through a pipeline; the top of the separator is connected with a hydrolysate delivery pipeline; the bottom of the separator is connected with a washing water delivery pipeline; and a separator inlet pipeline is connected with a pressure delivery pump outlet pipeline. By adoption of a mixing component, two incompatible mediums such as hydrolysate and washing water can be fully mixed, so that ...

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Номер записи: 1
26-11-2014 дата публикации

Concentrated-acid hydrolysis technology for dimethyl dichlorosilane under balance state

Номер: CN104163922A
Автор: CHENG JIZENG, CUI XING'AN, LIU FEI
Принадлежит:

The invention discloses a concentrated-acid hydrolysis technology for dimethyl dichlorosilane under a balance state. The technology comprises the following steps: (1) adding dimethyl dichlorosilane into a static mixer, mixing the dimethyl dichlorosilane with hydrochloric acid in cycle in the static mixer; (2) transferring the mixed solution in the step (1) to a distributed falling-film analytic tower to carry out hydrolysis, wherein the reaction temperature is 40 to 60 DEG C, the hydrolysis reaction pressure is 0.1 to 0.2 MPa, and the reaction time is 2 to 30 seconds; (3) introducing the reaction fluid obtained in the step (2) into a two-phase separator to carry out acid-oil separation, introducing the acid phase to an desorption tower to separate the hydrogen chloride gas, mixing the desorbed circular acid with the supplemented diluted hydrochloric acid, introducing the mixed acid into the static mixer to carry out cycle reactions; and finally washing and purifying the oil phase so as ...

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Номер записи: 2
19-11-2014 дата публикации

Additive capable of improving utilization rate of silicon power in synthesis of methyl chlorosilane

Номер: CN104151343A
Автор: CHENG JIZENG, QU GUOZHONG, DOU BINGZHI, XIAO YUWEN, YANG BENCHAO
Принадлежит:

The invention discloses an additive capable of improving utilization rate of silicon power in synthesis of methyl chlorosilane. The additive is characterized by being prepared from the following components in parts by weight through mixing: 30-70 parts of an oxide, 25-50 parts of silicon powder, 4.5-15 parts of copper powder and 0.5-5 parts of zinc powder, wherein the average particle size of the additive is 70-100mm and the weight ratio of silicon oxide to aluminum oxide to calcium oxide in the oxides is (82-87) to (7-13) to (3-7). At the later stage of a reaction between silicon powder and chloromethane in a fluidized bed, by adopting the reaction additive disclosed by the invention, the intensity of the reaction in the fluidized bed is effectively controlled and thus the quality of the reaction product can be ensured, and meanwhile, since silicon powder is in full contact with chloromethane, the conversion rate of silicon powder is improved, the generation of waste silicon powder is ...

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Номер записи: 3
24-09-2014 дата публикации

Method for preparing chloromethane by utilizing alcohol-containing hydrochloric acid

Номер: CN104058924A
Автор: CHENG JIZENG, CUI XING'AN, HE DEJIE
Принадлежит:

The invention discloses a method for preparing chloromethane by utilizing alcohol-containing hydrochloric acid. The method comprises the following steps: continuously adding alcohol-containing hydrochloric acid and methanol into a tower reactor according to a mass ratio of 1:(1-2), carrying out a two-stage reaction, and extracting mixed gas containing methane chloride from the tower reactor, wherein the mixed gas contains a small amount of hydrogen chloride, unreacted methanol, water, dimethyl ether and other substances; introducing the mixed gas into a rectifying tower, extracting pure chloromethane on the tower top, performing condensation return on the methanol, and adding the methanol into the reactor for reutilization; allowing a small amount of hydrogen chloride and water to form low-concentration hydrochloric acid wastewater at the tower bottom, and performing neutralizing treatment. The invention also discloses a device for preparing chloromethane by adopting the method. The method ...

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Номер записи: 4
10-09-2014 дата публикации

Loop-line separating method of organic silicon hydrolysate

Номер: CN104031084A
Автор: CHENG JIZENG, CUI XING'AN, LIU FEI
Принадлежит:

The invention discloses a loop-line separating method of organic silicon hydrolysate. Under vacuum negative pressure, and at 100-200 DEG C, organic silicon hydrolysate is rectified according to different boiling points of a line body and a loop body in a loop-line separating tower under vacuum negative pressure at 100-200 DEG C to realize separation of the loop body and the line body, wherein the line body is obtained in a tower kettle, and the loop body is obtained on the tower top. The loop-line separating method disclosed by the invention has beneficial effects that after the set of loop-ring separating device is arranged, splitting load after the monomer production is expanded, and investment of the set of the splitting device is reduced; the loop-line separated hydrolysate is prepared into 107 glue, so that cost is greatly saved in comparison with the way of preparing 107 glue by DMC (dimethyl carbonate); after loop-line separating, the organic silicon hydrolysate can be directly sold ...

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Номер записи: 5
23-07-2014 дата публикации

Butyl octanol wastewater treatment method

Номер: CN103936212A
Автор: CAI YINGQIANG, LIU TAO, LI E, CHEN YUNFENG, CHENG JIZENG, BI JINGLI
Принадлежит:

The invention discloses a butyl octanol wastewater treatment method. The treatment method comprises the following steps: regulating the pH value of butyl octanol wastewater to 1.0-6.0, taking alkane alcohol above C8 as an extraction agent, wherein the alkane alcohol above C8 is derived from a secondary rectification heavy component of octanol rectification residual liquid, and an extraction ratio is (1:2)-(1:4) of an organic phase to an aqueous phase, and separating the organic phase and the aqueous phase; adding a FeSO4 solid to the aqueous phase at 17-35 DEG C, and stirring until FeSO4 concentration is5.0-20.0g/L; adding hydrogen peroxide to a solution until H2O2 concentration is 4.5-30.0g/L, keeping water temperature at 17-35 DEG C, reacting for 1-4 hours, regulating the pH value to be neutral or weakly alkaline by use of a Ca(OH)2 solution, adding a flocculating agent PAM, standing and performing solid-liquid separation. The treatment method disclosed by the invention is good in effect ...

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Номер записи: 6
08-10-2014 дата публикации

Method and device for recovering methanol from alcohol-containing hydrochloric acid

Номер: CN104086366A
Автор: LIU BINGMIN, CHENG JIZENG, QU GUOZHONG, DOU BINGZHI
Принадлежит:

The invention discloses a method for recovering methanol from alcohol-containing hydrochloric acid. The method comprises the following steps that after double effect heat exchange of alcohol-containing hydrochloric acid in a heat exchanger, alcohol-containing hydrochloric acid enters the top of a desorption tower; reverse contact heat exchange is carried on a mixed gas of HCl and methanol flashed by a reboiler and alcohol-containing concentrated hydrochloric acid sprayed from the top of the desorption tower; the mixed gas of HCl and methanol extracted from the top of the desorption tower sequentially passes through a first level cooling tower and a second level cooling tower, and the condensate after condensation enters the bottom of a reaction kettle under the effects of position difference and pressure difference and is contacted with the HCl gas extracted by the second level cooling tower to react to generate chloromethane. The invention further discloses a device for recovering methanol ...

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Номер записи: 7
19-11-2014 дата публикации

Recovery process for by-products produced by cracking of organosilicone monomers

Номер: CN104151348A
Автор: CHENG JIZENG, QU GUOZHONG, LI JIKE
Принадлежит:

The invention discloses a recovery process for by-products produced by the cracking of organosilicone monomers. After a vacuum pump pumps gas from a low-component removal tower, operating fluid containing D3 is discharged from the outlet of the vacuum pump, and fed in an operating fluid tank from the bottom thereof, and liner bodies and high-boiling-point ring bodies which are at the upper layer and not easily crystallized flow into an overflow tank through an overflow valve, and then are conveyed to a hydrolysate storage tank to continue to participate in a cracking reaction, so that DMC is generated; a strong base with a concentration of 40-50% is added into the operating fluid of the vacuum pump, and the volume ratio of the operating fluid to the strong base is 80000 to (1-5). According to the recovery process, because weak alkaline liquid replacing for water is used as the operating fluid of the vacuum pump, the corrosion of the vacuum pump is avoided, so that the D3 is subjected to ...

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Номер записи: 8
29-10-2014 дата публикации

Method for producing cyclosiloxane through solvent oil catalytic cracking

Номер: CN104119372A
Автор: CHENG JIZENG, CUI XING'AN, LIU FEI
Принадлежит:

The invention discloses a method for producing cyclosiloxane through solvent oil catalytic cracking. The method comprises the following steps: vacuumizing a cracking kettle until the pressure in the kettle is -0.099 to -0.095 MPa, slowing heating the cracking kettle to a temperature of 120 DEG C; adding a certain amount of solvent oil into the cracking kettle; then adding a certain amount of hydrolysate and a KOH solution into the cracking kettle; heating the cracking kettle until the temperature in the cracking kettle reaches 130 to 150 DEG C to trigger the cracking reaction; stopping exchanging solvent oil after the cracking reactions have been carried out for a while, and keeping on carrying out cracking reactions. The method has the following advantages: solvent oil is taken as the catalyst, thus the heat transfer is uniform, the local overheating phenomenon is eliminated, the reaction speed is accelerated, and the cyclosiloxane yield is increased; the alkali catalyst using amount is ...

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Номер записи: 9