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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 3. Отображено 3.
08-09-2020 дата публикации

Method for continuously producing potassium metabisulfite by using tubular reactor

Номер: CN0111634926A
Автор: GONG YUANSHENG, ZHANG TANGYONG, HU ZHICHAO, PAN HUI, XU DELIANG, SUN JUN, CHE FAZHAN, MA ZHONGTANG, HE GUOYONG, WANG JUE
Принадлежит:

The invention provides a method for continuously producing potassium metabisulfite by using a tubular reactor. The method comprises the following steps: S1, extracting a potassium hydroxide solution with the concentration of 90-95% by utilizing an infusion pump A, and adding the potassium hydroxide solution with the concentration of 90-95% into a liquid storage tank A by an infusion pump A throughan electric control electromagnetic valve A at a liquid inlet of the liquid storage tank A; S2, weighing the potassium hydroxide solution added into the liquid storage tank A in the step S1 in real time through an intelligent weighing device A at the bottom of the liquid storage tank A; and S3, when the weight weighed by the intelligent weighing device A in S2 reaches the set maximum value, controlling the infusion pump A and the electric control electromagnetic valve A to perform synchronous closing operation by the intelligent weighing device A. The intelligent degree is high, continuous production ...

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Номер записи: 1
01-10-2014 дата публикации

Production method for food-grade potassium metabisulfite

Номер: CN104071809A
Автор: XU DELIANG, SUN JUN, MA ZHONGTANG, HE GUOYONG
Принадлежит:

The invention discloses a production method for food-grade potassium metabisulfite. The production method comprises the following steps: (1) conducting batching on tap water, purified water or potassium metabisulfite mother liquid and potassium hydroxide or potassium carbonate to form a solution, wherein the solution contains K<+> by 100-400 g/L; then adding an edulcoration agent A and an additive B; (2) carrying out filtration by a micropore filtering device of which the pore diameter is 0.1-10 m to obtain a clarified solution; (3) pumping in gas or introducing SO2 liquid until the PH value is 2.5-5.0; reacting to generate a potassium bisulfite solution; (4) cooling and stirring the solution, and enabling the content of the potassium bisulfite in the solution to reach to supersaturated density; separating potassium metabisulfite crystal; conducting seriflux on the separated potassium metabisulfite crystal; obtaining a potassium metabisulfite crystal wet material and the mother liquid ...

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Номер записи: 2
08-09-2020 дата публикации

Production method of food-grade potassium sulfite

Номер: CN0111634927A
Автор: GONG YUANSHENG, PAN HUI, HU ZHICHAO, ZHANG TANGYONG, XU DELIANG, SUN JUN, CHE FAZHAN, MA ZHONGTANG, HE GUOYONG, WANG JUE
Принадлежит:

The invention belongs to the field of food-grade potassium sulfite production, particularly relates to a production method of food-grade potassium sulfite, and aims at solving the problems that existing food-grade potassium sulfite is low in production efficiency and high in production cost. Proposed now is the following scheme, the method comprises the following steps: S1, pumping seawater by using water pumping equipment, firstly filtering the pumped seawater by using the water pumping equipment, introducing the filtered seawater into a glass exchange column filled with sodium-type natural zeolite, and adsorbing K ions in the seawater by using the sodium-type natural zeolite in the glass exchange column to obtain potassium-type natural zeolite; and S2, hoisting the glass exchange columnfilled with the saturated potassium type natural zeolite by using hoisting equipment, and placing a new glass exchange column filled with the sodium type natural zeolite at the position. The production ...

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Номер записи: 3