Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for producing high-purity zinc sulfide and co-producing acetic acid and sodium chloride by using sodium hydrosulfite filter residues

A technology of sodium chloride and sodium hydrosulfite, applied in zinc sulfide, alkali metal chloride, organic chemistry, etc., can solve the problems of single use, inability to consume zinc powder waste residue, etc., achieve simple operation, less by-products, and be suitable for promotion Applied effect

Inactive Publication Date: 2011-06-15
汪晋强
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its use is relatively single, and it is far from being able to consume the increasing zinc powder waste slag along with the increase in the production of sodium hydrosulfite.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing high-purity zinc sulfide and co-producing acetic acid and sodium chloride by using sodium hydrosulfite filter residues
  • Method for producing high-purity zinc sulfide and co-producing acetic acid and sodium chloride by using sodium hydrosulfite filter residues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] refer to figure 1 , a method of producing high-purity zinc sulfide co-production acetic acid and sodium chloride with sodium hydrosulfide filter residue, weighing 495kg sodium hydrosulfite, converting the content of zinc hydroxide in the filter residue of sodium hydrosulfite to be 297kg, and pulverizing the sodium hydrosulfite filter residue, configured into Suspension, configure dilute hydrochloric acid solution at the same time; Gained suspension and dilute hydrochloric acid solution are put into the first corrosion-resistant reactor (1) successively according to the mass ratio of zinc hydroxide and hydrogen chloride pure substance of 1: 0.74, and carry out under stirring reaction to obtain a zinc chloride-containing mixed solution; the gained zinc chloride-containing mixed solution is filtered through the first filter (2) to obtain a clear zinc chloride-containing filtrate; the clarified zinc chloride-containing filtrate is React with an appropriate amount of zinc hy...

Embodiment 2

[0027] refer to figure 1, a method of producing high-purity zinc sulfide co-production acetic acid and sodium chloride with sodium hydrosulfide filter residue, weighing 495kg sodium hydrosulfite, converting the content of zinc hydroxide in the filter residue of sodium hydrosulfite to be 297kg, and pulverizing the sodium hydrosulfite filter residue, configured into Suspension, configure dilute hydrochloric acid solution at the same time; Gained suspension and dilute hydrochloric acid solution are put into the first corrosion-resistant reactor (1) successively according to the mass ratio of zinc hydroxide and hydrogen chloride pure substance of 1: 0.94, and carry out under stirring reaction to obtain a zinc chloride-containing mixed solution; the gained zinc chloride-containing mixed solution is filtered through the first filter (2) to obtain a clear zinc chloride-containing filtrate; the clarified zinc chloride-containing filtrate is React with an appropriate amount of zinc hyd...

Embodiment 3

[0029] refer to figure 1 , a method of producing high-purity zinc sulfide co-production acetic acid and sodium chloride with sodium hydrosulfide filter residue, weighing 495kg sodium hydrosulfite, converting the content of zinc hydroxide in the filter residue of sodium hydrosulfite to be 297kg, and pulverizing the sodium hydrosulfite filter residue, configured into Suspension, configure dilute hydrochloric acid solution at the same time; Gained suspension and dilute hydrochloric acid solution are put into the first corrosion-resistant reactor (1) successively according to the mass ratio of zinc hydroxide and hydrogen chloride pure substance of 1: 0.54, and carry out under stirring reaction to obtain a zinc chloride-containing mixed solution; the gained zinc chloride-containing mixed solution is filtered through the first filter (2) to obtain a clear zinc chloride-containing filtrate; the clarified zinc chloride-containing filtrate is React with an appropriate amount of zinc hy...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for producing high-pure zinc sulfide and co-producing acetic acid and sodium chloride by using sodium hydrosulfite filter residues. The method is as follows: reacting the sodium hydrosulfite filter residues with hydrogen chloride so as to obtain a mixture liquid containing zinc chloride; filtering to obtain a zinc chloride containing solution, a sodium acetate solution and a hydrogen sulfide solution; carrying out a reaction on the zinc chloride-containing solution, sodium acetate solution and hydrogen sulfide solution in a pure substance mass ratio of zinc chloride to sodium acetate to hydrogen sulfide so as to obtain a zinc sulfide-containing precipitate, the mixture of sodium acetate and hydrogen sulfide; filtering the mixture of zinc sulfide-containing precipitate, sodium acetate and hydrogen sulfide to obtain zinc sulfide filter cakes and a solution containing acetic acid and sodium chloride; washing, drying and smashing the zinc sulfide filter cakes so as to obtain a zinc sulfide powder product; carrying out reduced pressure distillation on the solution containing acetic acid and sodium chloride, wherein the acetic acid is evaporated and escaped in a form of acetic acid gas; carrying out condensation rectification to obtain pure high-concentration acetic acid, wherein the residual is a sodium chloride solution after the acetic acid is evaporated and escaped; continuously distilling the sodium chloride solution so as to obtain a saturated or supersaturated sodium chloride solution, cooling so as to precipitate out sodium chloride crystals; and filtering the sodium chloride crystals in the filter to obtain the sodium chloride product.

Description

technical field [0001] The invention relates to the technical field of treatment and utilization of waste residues, in particular to a method for producing high-purity zinc sulfide and co-producing acetic acid and sodium chloride with sodium hydrosulfide filter residues. Background technique [0002] Sodium Hydrosulfite is commonly known as Sodium Hydrosulfite. It is a strong reducing agent. It is widely used in textile, printing and dyeing industries as dyeing aids and bleaching agents. It is also a raw material for synthetic dyes in the pharmaceutical industry and is also used in copper plates. Printing and analysis reagents, etc. [0003] In recent years, the market demand for hydrosulfite has become increasingly strong and growing rapidly. In particular, the demand for hydrosulfite in the textile and printing and dyeing industries has risen steadily, with an increase of 10-15% every year. In addition, with the production and development of domestic high-end newsprint a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01G9/08C01D3/04C07C53/08C07C51/02
Inventor 王嘉兴
Owner 汪晋强
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com