Industrial Ammonium Bisulfite

Industrial ammonium bisulfite has the appearance of white orthorhombic prisms and is soluble in water. It is usually used as a preservative, reducing agent, and also used to produce sulfur dioxide, sodium hydroxide, etc. The production method is absorption method. Through two packed towers, ammonia water is used to sequentially absorb the tail gas produced by sulfuric acid through a contact method to prepare an ammonium bisulfite solution. It is a corrosive substance that decomposes toxic sulfur dioxide and ammonia when heated. During the storage process, the warehouse should be ventilated and dry, low temperature and dry, and should be stored separately from alkali.

In the field of water treatment, it can be used as a deoxidizer for boiler water, drilling mud, and closed-circuit circulating water cooling water to prevent corrosion of equipment by dissolved oxygen. It is especially suitable for small and medium-sized low-pressure boilers. In the drilling industry, adding ammonium bisulfite and crystalline Fe3O4 (as a catalyst) to drilling mud containing montmorillonite can effectively remove dissolved oxygen in the mud and prevent well pipe corrosion. In addition, ammonium bisulfite can be used to produce pure liquid sulfur dioxide, sodium bisulfite, sodium bisulfite, some dyes and drugs; it is a raw material for caprolactam production in synthetic fiber production; it is used in pulp and paper industries Pulping and bleaching.