CN102115205A - Method for producing manganese sulfate, and co-producing ammonium sulfate and sodium sulfide by using manganese-containing waste liquid from production of hydroquinone - Google Patents

Abstract

The invention relates to the technical field of the utilization of manganese-containing waste liquid from the production of hydroquinone, in particular to a method for producing manganese sulfate, and co-producing ammonium sulfate and sodium sulfide by using the manganese-containing waste liquid from the production of hydroquinone, which mainly comprises: distilling manganese-containing waste liquid from the production of hydroquinone to obtain manganese sulfate crystals and ammonium sulfate crystals, and further deeply processing the manganese sulfate crystals and ammonium sulfate crystals to obtain corresponding products; and distilling the liquid left in a distiller under reduced pressure to obtain a sulfuric acid product. In the invention, waste liquid can be removed completely, so the pollution of waste residue to the environment is reduced; valuable manganese sulfate, ammonium sulfate and sodium sulfide products are produced; and thus, obvious social and economic benefit is created. The process and production equipment are simple, and the method is a practical treatment and utilization method.

Description

A kind ofly make manganous sulfate coproduction of ammonia sulfate and vitriolic method with producing the manganese waste liquid that contains that Resorcinol produced

Technical field

The present invention relates to produce the technical field that contains the manganese waste water utilization that Resorcinol produces, particularly a kind ofly make manganous sulfate coproduction of ammonia sulfate and vitriolic side with producing the manganese waste liquid that contains that Resorcinol produced.

Technical background

Resorcinol is important organic intermediate, and China has also dropped into suitability for industrialized production in the development seventies in 20th century.Advantages such as at present domestic mainly taking used aniline-Manganse Dioxide explained hereafter Resorcinol, and this technology is compared with external phenol-hydrogen peroxide process, has the product purity height, and impurity is few.But its shortcoming is that the quantity discharged of waste liquid is big.Under the common state, one ton of Resorcinol of every production has 40 tons of Mn-bearing waste waters approximately.The chemical composition that contains manganese waste liquid the inside of Resorcinol is the content 11-12% of manganous sulfate, and ammonium sulfate content is 1.4～1.6%, and sulfuric acid content is 1.8～2.2%, simple substance element residue 5～6%.At present domestic factories' utilizations contain the manganese waste liquid and produce crystal manganous sulfate or common carbonate, and high-purity manganese carbonate etc.High-purity manganese carbonate is an ideal high performance strong magneticsubstance, is the main raw material of the manganese-silicon that developed rapidly modern age, mangal, high-performance manganese dioxide product.High-purity manganese carbonate mainly is as soft magnet oxygen magneticsubstance at present, is that raw material is produced with electrolytic manganese or manganous sulfate, bicarbonate of ammonia etc. generally.But the manganese waste liquid that contains that production Resorcinol also of no use is produced is at present made manganous sulfate coproduction of ammonia sulfate and vitriolic relevant report.

Summary of the invention

The invention provides and a kind ofly make manganous sulfate coproduction of ammonia sulfate and sulfuric acid with producing the manganese waste liquid that contains that Resorcinol produced, this method not only technology is simple, and can also make multiple value product when can effectively dispose waste liquid.

To achieve the above object, technical scheme of the present invention is:

A kind ofly make manganous sulfate coproduction of ammonia sulfate and vitriolic side, it is characterized in that, comprise being prepared as follows step with producing the manganese waste liquid that contains that Resorcinol produced:

Steps A, will produce the waste liquid that Resorcinol produces and carry out suction filtration with the suction filtration machine;

Step B, suction filtration gained simple substance residual filter cake in the steps A is used to develop other products;

Step C, suction filtration gained filtrate in the steps A is distilled with distiller earlier, and then with the gradient cooling device cool off, crystallization, successively obtained manganous sulfate crystal and ammonia sulfate crystal;

Step D, with remaining liquid in the distiller among the step C, carry out shallow distillation with the underpressure distillation device and wait and obtain the sulfuric acid usual production;

Step e, gained manganous sulfate crystal among the step C is carried out being packaged to be manganese sulfate product after washing and spin-drying machine, moisture eliminator, the pulverizing with first washing and spin-drying machine, first moisture eliminator, first pulverizer successively;

Step F, the ammonia sulfate crystal of gained among the step C is carried out being packaged to be ammonium sulfate product after washing and spin-drying machine, moisture eliminator, the pulverizing with second washing and spin-drying machine, second moisture eliminator, second pulverizer successively.

The present invention will produce the manganese waste liquid that contains that Resorcinol produces earlier to distill, and obtain manganous sulfate crystal and ammonia sulfate crystal, and then manganous sulfate crystal and the further deep processing of ammonia sulfate crystal are obtained corresponding product respectively; Remaining liquid obtains sulfuric acid product through underpressure distillation in the distiller; The present invention can as clean as a pennyly gulp down waste liquid, alleviates the pollution of waste liquid to environment; Can make valuable manganous sulfate, ammonium sulfate and sulfuric acid product again, not only have remarkable social benefit and economic benefit, and technology and production unit are simple, be a kind of relatively actual processing and utilize method.

Claims (1)

1. make manganous sulfate coproduction of ammonia sulfate and vitriolic side with producing the manganese waste liquid that contains that Resorcinol produced for one kind, it is characterized in that, comprise being prepared as follows step:

Steps A, will produce the waste liquid that Resorcinol produces and carry out suction filtration with the suction filtration machine;

Step B, suction filtration gained simple substance residual filter cake in the steps A is used to develop other products;

Step C, suction filtration gained filtrate in the steps A is distilled with distiller earlier, and then with the gradient cooling device cool off, crystallization, successively obtained manganous sulfate crystal and ammonia sulfate crystal;

Step D, with remaining liquid in the distiller among the step C, carry out shallow distillation with the underpressure distillation device and wait and obtain the sulfuric acid usual production;

Step e, gained manganous sulfate crystal among the step C is carried out being packaged to be manganese sulfate product after washing and spin-drying machine, moisture eliminator, the pulverizing with first washing and spin-drying machine, first moisture eliminator, first pulverizer successively;

Step F, the ammonia sulfate crystal of gained among the step C is carried out being packaged to be ammonium sulfate product after washing and spin-drying machine, moisture eliminator, the pulverizing with second washing and spin-drying machine, second moisture eliminator, second pulverizer successively.