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

Method for processing wastewater from production of epoxy chloropropane by using glycerol as material

A technology of epichlorohydrin and treatment method, which is applied in natural water treatment, heating water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of not realizing the maximum resource utilization of pollutants and affecting the application of technology, etc. To achieve the effect of easy operation and control, obvious economic benefits, and simple installation

Inactive Publication Date: 2012-09-26
西安汉术化学工程股份有限公司
View PDF6 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the adsorption equilibrium determines the limit of the adsorption process, there is no industrial report on the adsorption of low concentration, small molecular weight, high boiling point, and trace amounts of water-soluble organic matter in China.
In addition, the cleaning water containing low concentration of glycerin in this technology needs to be discharged through biological treatment, which does not realize the maximum possible resource utilization of pollutants
[0010] As can be seen from the prior art described above, there are many defects in the prior art, which seriously affect the application of these technologies. Therefore, it is also very necessary to develop a low-efficiency treatment for epichlorohydrin and propylene oxide saponification of high-salinity organic wastewater at present. Cost, method of recycling pollutants

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 processing wastewater from production of epoxy chloropropane by using glycerol as material
  • Method for processing wastewater from production of epoxy chloropropane by using glycerol as material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The amount of high-salinity organic wastewater produced by the ECH saponification and cyclization process in a factory is 15t / h. The wastewater composition is: NaCL 20% (weight ratio), NaOH 0.7% (weight ratio), glycerin 4500ppm, chlorine-containing organic matter 50ppm, COD 5500mg / L.

[0024] 15t / h high-salinity organic wastewater is sent to the preheater (E101) after being clarified and filtered to exchange heat with the condensed water from the IV-effect balance barrel (V104). After being heated to 40°C, it enters the IV-effect evaporation tank (EV104 ), under the condition of 0.04Mpa, it is heated to 75°C by circulation, and 3.526t / h of waste water vapor is generated, which is sucked into the mixing condenser (V102) by the vacuum pump (P108), and recovered to the water-sealed pool (V103) after condensation;

[0025] The concentrated liquid in the IV effect evaporator (EV104) is sent to the III effect evaporator (EV103) by the IV effect transfer pump (P105), and is he...

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 relates to a method for processing high-salinity organic wastewater generated in a saponification cyclization procedure in a process of producing epoxy chloropropane by using glycerol as material. The processing method comprises the following steps: firstly carrying out four-effect evaporation on the high-salinity organic wastewater to obtain concentrated salt slurry; then dewatering and centrifugally separating the concentrated salt slurry to obtain sodium chloride solid; conveying mother liquor with high glycerin content to a glycerin refining unit to be used as the material, condensing and recovering wastewater vapor. The method and a device for processing wastewater disclosed by the invention are simple, easy to operate and control, high in efficiency and obvious in economic benefit, not only can effectively process industrial wastewater to be up to the national emission standard, but also can effectively recover sodium chloride in the wastewater, and create a new profit growth point for an enterprise.

Description

technical field [0001] The invention belongs to the technical field of high-salt organic wastewater treatment. More specifically, the present invention relates to a method for the treatment of high-salinity organic wastewater produced in the saponification process in the process of producing epichlorohydrin with glycerin as raw material, which includes recovering sodium chloride by-products and Glycerin is recovered to realize the recycling of pollutants. Background technique [0002] Epichlorohydrin, also known as epichlorohydrin, is an important organic chemical raw material, mainly used in the production of epoxy resin, glass fiber reinforced plastics, electrical insulation materials, surfactants, medicines, pesticides, coatings, ion exchange resins, plasticizers, chlorine Alcohol rubber. [0003] At present, there are two production processes for epichlorohydrin and its precursor dichloropropanol, high-temperature chlorination of propylene and propylene acetate method....

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C01D3/06C07C31/22C07C29/78C02F103/36
Inventor 邓绍贵何世强刘艳马飞王志琰狄萌
Owner 西安汉术化学工程股份有限公司
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