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

Method for preparing bleaching powder and anhydrous calcium chloride by utilizing carbide slags to treat chlorine water

A technology of anhydrous calcium chloride and carbide slag, applied in the direction of calcium/strontium/barium chloride, hypochlorous acid, hypochlorite, etc., can solve problems such as incomplete treatment

Inactive Publication Date: 2009-12-16
王嘉兴
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no thorough treatment. Although chlorine gas and chlorine radicals and hypochlorous acid and hypochlorite radicals are removed to reduce pollution, pollutants still exist

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 preparing bleaching powder and anhydrous calcium chloride by utilizing carbide slags to treat chlorine water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment one: (dull chlorine water contains hypochlorous acid 1.2%; Contains chlorine gas 0.3%)

[0016] 500 kilograms of calcium carbide slag (8) and dull chlorine water (9) with a content of 75% are mixed in the processor (1) according to a mass ratio of 1:10, and the reaction is carried out with slow stirring for a long time of 2-3 hours until the reaction The liquid test is free of chlorine and hypochlorite. If there is, continue to add slaked lime until the reaction is complete.

[0017] Now above-mentioned reaction solution is carried out suction filtration, and the filter cake that suction filtration (2) obtains is calcium hypochlorite, obtains the calcium hypochlorite finished product of 91.95 kilograms through drying (4) pulverization (6), and filtrate is dihydrate chlorine Calcium chloride obtains 26.39 kilograms of anhydrous calcium chloride finished products through decompression deep distillation (3) through condensation (5), and then enters the finished...

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 discloses a method for preparing bleaching powder and anhydrous calcium chloride by utilizing carbide slags to treat chlorine water. The main technical proposal of the invention is as follows: utilizing hydrated lime and the chlorine water in the chlor-alkali industry for slow chemical reaction, carrying out filtration to obtain filter cakes and then carrying out drying and crushing to obtain the finished product of bleaching powder; carrying out vacuum distillation on filter liquor to obtain the finished product of anhydrous calcium chloride. The method thoroughly eliminates the pollution of the waste chlorine water in the chlor-alkali industry and simultaneously creates certain economic benefits for the enterprises.

Description

Technical field: [0001] The invention belongs to the technical field of industrial waste treatment, in particular to a method for preparing bleaching powder and anhydrous calcium chloride by treating chlorine water with calcium carbide slag. technical background: [0002] At present, the three wastes of chlorine water in chlor-alkali plants are mainly neutralized by alkaline substances. Generally, calcium carbide slag or slaked lime is used for neutralization to turn them into calcium hypochlorite and calcium chloride and discharge them directly. There is no thorough treatment. Although the removal of chlorine gas and chlorine radicals as well as hypochlorous acid and hypochlorite radicals has reduced the pollution, the pollutants still exist. The invention can completely eliminate all harmful substances in chlorine water, and turn waste into treasures into chemical products, which not only completely eliminates pollution sources but also creates economic value. Invention ...

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): C01B11/06C01F11/28
Inventor 王嘉兴
Owner 王嘉兴
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