Production methods and uses of sodium bisulfite
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Sodium bisulfite is theoretically produced by the reaction of ammonia water with sulfur dioxide, but in actual production, how is sodium bisulfite manufactured? Is it made by absorbing ammonia water into sulfuric acid exhaust gases? Is it still produced by ammonia absorption of boiler flue gas? Or produced by the reaction of ammonia with liquid sulfur dioxide? Are there a wide range of applications for sodium bisulfite, and what are its main uses? What is the current domestic production level? Are there any relevant standards for industrial products? Thank you!
I would like to know that too; could friends on the forum give me some information?
You’re asking about ammonium bisulfite, right? (1) It is produced by ammonia absorbing sulfur dioxide from sulfuric acid exhaust gases. (2) It is produced by passing sulfur dioxide into an aqueous amine carbonate solution. It is mainly used as a reducing agent, in the production of liquid sulfur dioxide, safety powder, sodium metabisulfite, and other related products ； It is also used in dyes and pharmaceuticals, among other areas.
Technical specifications: Parameter, Unit, First-class product, Qualified product. Content of anhydrous sulfurous acid: %, ≤ 90, ≤ 85. Content of ammonium bisulfite or ammonium bicarbonate: %, ≤ 0.5, ≤ 1.0. Content of sulfuric acid an: ≤ 5.0, ≤ 7.0
Mine is the design and manufacturing company for sodium bisulfite! !
Sodium bisulfite is a reducing agent that we primarily use in demineralized water to protect reverse osmosis membranes
Sodium bisulfite and sodium sulfite – let’s discuss what are the differences in their production methods?
Here is a link: http://zhidao.baidu.com/question/90806119.html
The exhaust gas from the sulfur-based acid production system is washed using liquid alkali, resulting in sodium bisulfite. The sodium bisulfite solution has a concentration of around 20%, with a daily production of about 80 tons. Currently, we intend to use sodium bisulfite as a raw material for our products; the main products of interest are sodium sulfite and sodium pyrosulfite. We also produce fluorosilicic acid, from which sodium fluorosilicate can be manufactured. Products that require little investment but can generate good returns! Do you know the relevant design firms and manufacturers?