Regenerative lead-ammonium-method desulphurization and ammonium sulfate preparation process and device

Abstract

The invention discloses a regenerative lead-ammonium-method desulphurization and ammonium sulfate preparation process and device. The device comprises a loading machine, an unpacking machine, pre-desulphurization lead paste press filter, a dry lead paste conveyor, a primary desulphurization device, a secondary desulphurization device, a post-desulphurization lead paste press filter, a primary desulphurization filtrate storage tank, a lead paste rinsing solution storage tank, a secondary desulphurization filtrate storage tank, an ammonium sulfate filtrate purification device, an MVR crystallization drying device, a distilled water storage tank, a packing device, and a stacking machine and the like, and all devices are connected reasonably to form a system. By adopting the process and device, the desulphurization problem of waste battery lead paste can be solved, the filtrate is secondarily desulphurized, the concentration of the ammonium sulfate is improved, and the evaporation amount of the water is reduced, so that the production cost of the lead paste desulphurization can be significantly reduced; the degree of automation of the system is high, the labor strength of worker and the labor cost can be reduced, the production efficiency is improved, and the lead sulfate is directly converted to the ammonium sulfate, the quality of the ammonium sulfate can reach or exceed the grade-A quality of the national standard, and the economical benefit is good.

Description

technical field [0001] The invention relates to desulfurization by a regenerated lead-ammonium method, in particular to a process and equipment for desulfurization by a regenerated lead-ammonium method and preparation of ammonium sulfate. Background technique [0002] In the secondary lead industry, the desulfurization of lead paste is mainly fire method; the existing desulfurization method mainly uses high temperature (1100-1200°C) to convert sulfur in lead paste into SO 2 Mainly. This method mainly has the following defects: 1. It needs to consume a lot of fuel and auxiliary materials; 2. It needs to be made into balls or bricks and dried; 3. It needs a professional and expensive kiln; 4. It needs to invest a lot of auxiliary equipment ; 5, need to exhaust SO 2 Collect, filter, process, or make sulfuric acid, or make sulfate. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides an all-wet desulfuri...

AI Technical Summary

Problems solved by technology

This method mainly has the following defects: 1. It needs to consume a lot of fuel and auxiliary materials; 2. It needs to be made into balls or bricks and dried; 3. It needs a professional and expensive kiln; 4. It needs to invest a lot of auxiliary equipment ; 5, need to exhaust SO 2 To collect, filter, treat, or produce sulfuric acid, or produce sulfate

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