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

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22-10-2014 дата публикации

Mobile scar eliminating method of adipic acid crystallizer

Номер: CN104107818A
Автор: AI XIAOXIN, YUAN WEN, ZHANG FENGYANG, WANG LIN, ZHANG MENG, CHEN SHUNHANG, ZHANG JINZHI, DONG QIANG, JIANG YU, SUN SHUNPING
Принадлежит:

The invention provides a mobile scar eliminating method of an adipic acid crystallizer. The specific process of the mobile scar elimination comprises the steps of starting movably eliminating scars at a time T0 before the scar elimination is started, wherein the pressure of all crystallizing chambers is P0, i.e. corresponding crystallizing pressure of N chambers; raising the pressure to P1 from P0 at constant speed by a pressure regulating value during the time [delta]T, and raising the temperature of materials in the crystallizing chambers in a balanced way; enabling solution in a part of chambers to achieve an unsaturated state by keeping the pressure P1 for a period of time; gradually dissolving crystal scars; recovering to initial operation from the time T1, wherein the initial operation is the crystallization of N chambers; reducing the pressure to P0 from P1 at constant speed during the time [delta] T, and finishing scar elimination at the time T0+[delta]T. According to the method ...

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Номер записи: 1
05-11-2014 дата публикации

Production method of ultrafine adipic acid

Номер: CN104130119A
Автор: ZHANG FENGYANG, AI XIAOXIN, WANG LIN, ZHANG MENG, YUAN WEN, CHEN SHUNHANG, ZHANG JINZHI, LUO JIAQI, XU HANG, ZHOU YIN
Принадлежит:

The invention provides a production method of ultrafine adipic acid. The method includes a section comprising crystallization thickening of coarse adipic acid, centrifugation of coarse adipic acid, crystallization thickening of fine adipic acid and centrifugation of fine adipic acid, and a section comprising a crystallization thickening of ultrafine adipic acid, and centrifugation of ultrafine adipic acid. The invention also makes some improvement on the original fine adipic acid production process, adds a set of parent water system, optimizes a washing water system in the thickening centrifugation part of the original process, adjusts the specification and content of water flushing, at the same time changes the mother water system into two set of interconnected systems, and the realizes water balance. The method provided by the invention is capable of producing ultrafine adipic acid product, meets the requirements for continuous and stable production of ultrafine adipic acid in industrial ...

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Номер записи: 2