Organosilicone waste acid contained tributylamine, siloxane and aluminum chloride recycling technology

Abstract

The invention relates to the technical field of environment-friendly industry waste acid recycling, in particular to an organosilicone waste acid contained tributylamine, siloxane and aluminum chloride recycling technology. The technology comprises the steps of acid and oil separation, aluminum chloride film separation, hydrochloric acid salting analysis, tributylamine and salt separation and salt evaporation and concentration. Equipment of the technology comprises a waste hydrochloric acid groove, a waste acid feeding pump, an acid and water separator, a siloxane recycling tank, a film filter, an aluminum chloride collecting tank, a hydrochloric acid tundish, a hydrochloric acid entrance pump, an analysis tower, a first reboiler, a two-phase separator, a primary condenser, a secondary cooler, a tributylamine recycling tank, an evaporator, a calcium chloride recycling pump, a second reboiler, a tributylamine recycling pump, a wastewater condensation groove and a wastewater pump; the organosilicone waste acid contained tributylamine, siloxane and aluminum chloride recycling technology has the advantages of lowering the treatment operation cost, meanwhile, recycling lost catalysts, siloxane, aluminum chloride and other substances, and improving economic benefits of an enterprise.

Description

technical field [0001] The invention relates to the technical field of recycling waste acid in the environmental protection industry, in particular to a recycling process for organosilicon waste acid containing tri-n-butylamine, siloxane and aluminum chloride. Background technique [0002] The development and utilization of organic silicon high boiling matter has always been the key research object of waste utilization by organic silicon manufacturers. After research and development in recent years, catalytic cracking technology is usually used for high boiling matter to produce dimethyl dichlorosilane, organochlorine The silane is then hydrolyzed to prepare silicone oil, silicone rubber, silicone resin, and organic silicon. The complex components of organosilicon high boilers are closely related to the purity of silicon powder and methyl chloride, the properties of catalysts and reaction conditions in the production of organosilicon monomers, and are developed in the utiliz...

AI Technical Summary

Problems solved by technology

At present, manufacturers usually use sodium hydroxide neutralization method, or add calcium carbonate for neutralization treatment, resulting in a large amount of solid waste salt substances, causing environmental pollution, large amount of wastewater discharge and other problems

It is impossible to recycle the catalyst tri-n-butylamine, aluminum chloride and siloxane, which greatly wastes resources, and its treatment and operation costs are relatively high. At the same time, it is difficult to achieve the purpose and requirements of enterprise recycling, which limits the use value of waste acid

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