Supercharge Your Innovation With Domain-Expert AI Agents!

Method for treating sodium sulfate and ammonium sulfate mixture by adoption of sodium chloride

A technology of ammonium sulfate and sodium sulfate, which is applied in the direction of ammonium chloride, alkali metal sulfite/sulfate purification, ammonium halide, etc., can solve the problems that the cost cannot be passed, and the binary phase diagram cannot be completely separated, so as to reduce the processing cost The effect of cost, huge profit

Inactive Publication Date: 2018-04-03
青岛九洲千和机械有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the distributed crystallization method is limited by the complex binary phase diagram of ammonium sulfate and sodium sulfate and cannot completely separate the two.
However, the alkali stripping method requires a large amount of sodium hydroxide and sulfuric acid, which cannot be passed in terms of cost.

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Mix the waste liquid concentrate with an appropriate amount of sodium chloride, evaporate to dryness, heat to 350°C, and keep warm for 2 hours until the ammonium chloride formed by the reaction of ammonium sulfate and sodium chloride is completely volatilized. At the same time, the volatilized ammonium chloride gas is cooled and collected again to obtain high-purity ammonium chloride solid, and the tail gas is passed into water to form an ammonium chloride aqueous solution. The non-volatile one is higher purity sodium sulfate, wherein the N content is 0.0001%.

example 2

[0013] Mix the waste liquid concentrate with an appropriate amount of sodium chloride, evaporate to dryness, heat to 400°C, and keep warm for 1.5 hours until the ammonium chloride formed by the reaction of ammonium sulfate and sodium chloride is completely volatilized. At the same time, the volatilized ammonium chloride gas is cooled and collected again to obtain high-purity ammonium chloride solid, and the tail gas is passed into water to form an ammonium chloride aqueous solution. The non-volatile one is higher purity sodium sulfate, wherein the N content is 0.0001%.

example 3

[0015] Mix the waste liquid concentrate with an appropriate amount of sodium chloride, evaporate to dryness, heat to 500°C, and keep warm for 0.5 hours until the ammonium chloride formed by the reaction of ammonium sulfate and sodium chloride is completely volatilized. At the same time, the volatilized ammonium chloride gas is cooled and collected again to obtain high-purity ammonium chloride solid, and the tail gas is passed into water to form an ammonium chloride aqueous solution. The non-volatile one is higher purity sodium sulfate, wherein the N content is 0.0001%.

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 treating sodium sulfate ammonium sulfate mixture with sodium chloride. The feature of the process is that sodium chloride and mixed waste are mixed and heated directly to remove ammonium ions in the mixture and produce ammonium chloride by-product. The method has the advantages of low investment, simple process, relatively low energy consumption, high yield and large profit margin, and is normally suitable for industrialized treatment of mixtures of ammonium sulfate and sodium sulfate.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to an effective and low-cost method for treating the mixture of sodium sulfate and ammonium sulfate. Background technique [0002] In industrial production, such as in the catalytic process of petroleum smelting, a large amount of wastewater is produced, and the wastewater contains relatively high concentrations of sodium sulfate, ammonium sulfate and a small amount of other impurities. If this waste water is directly discharged without treatment, it will cause serious water pollution, affect the growth of crops and people's lives, and sodium sulfate and ammonium sulfate in waste water are useful resources that can be utilized. At present, the methods for dealing with this kind of waste are mainly distributed crystallization method and alkali stripping method. Among them, the distributed crystallization method is limited by the complex binary phase diagram of ammonium sulfate and s...

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): C01D5/16C01C1/16
CPCC01D5/16C01C1/164C01P2006/80
Inventor 李辉
Owner 青岛九洲千和机械有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com