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

Dichloromethane waste gas treatment equipment and method

A technology for waste gas treatment equipment and dichloromethane, which is applied in gas treatment, separation methods, chemical instruments and methods, etc. It can solve the problems of low service life of activated carbon adsorption equipment, easy generation of dioxins in combustion methods, and high energy consumption. , to achieve good physical and chemical stability, long service life and low energy consumption

Pending Publication Date: 2021-03-16
HANGZHOU ZHONGHUAN ENVIRONMENTAL ENG
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems that the dichloromethane condensation method consumes too much energy, the combustion method is easy to produce dioxins, and the activated carbon adsorption method has a relatively low service life, the invention provides a dichloromethane waste gas treatment equipment and method

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
  • Dichloromethane waste gas treatment equipment and method
  • Dichloromethane waste gas treatment equipment and method
  • Dichloromethane waste gas treatment equipment and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to Figure 1~4 , a dichloromethane waste gas treatment equipment, the equipment includes a spray part and an adsorption part, the spray part includes a first spray tower 1 and a second spray tower 2 connected in sequence, and the adsorption part includes The buffer tank 3, the adsorption tower, the condenser 4, the layered tank 10 and the recovery storage tank 11 are connected in sequence.

[0045] Described adsorption tower comprises the first adsorption tower 5, the second adsorption tower 6 and the standby third adsorption tower 7 connected in series, respectively fill in the first adsorption tower 5, the second adsorption tower 6, the third adsorption tower 7 There is a corresponding hydrophobic macroporous resin 12, and the first adsorption tower 5, the second adsorption tower 6, and the third adsorption tower 7 are respectively connected with the desorption centrifugal pump 13; the first spray tower 1 is connected to the waste gas inlet The pipe 14 communic...

Embodiment 2

[0050] Preparation of Hydrophobic Macroporous Resin

[0051](a) polymerizing monomer (polystyrene, divinylbenzene), porogen (xylene, 200 # Gasoline) mixing, then drop into azobisisobutyronitrile and stir to make it fully dissolve and mix uniformly to obtain an oil phase;

[0052] (b) add deionized water, polyvinyl alcohol and sodium chloride in the reaction vessel and mix, stir and heat up to make the three dissolve completely and mix uniformly to obtain the water phase; wherein, the volume of the deionized water is 4% of the volume of the oil phase times, the volume of polyvinyl alcohol is 0.02 times the volume of deionized water, and the mass fraction of sodium chloride accounts for 3% of the water mass;

[0053] (c) Mix the oil phase with the water phase, set the stirring speed at 500 rpm, and disperse the oil phase into liquid beads; then raise the temperature of the entire mixing system to 60°C, and heat up to 70°C after the liquid beads are shaped, and keep the temperat...

Embodiment 3

[0061] Preparation of Hydrophobic Macroporous Resin

[0062] (a) polymerizing monomer (polystyrene, divinylbenzene), porogen (xylene, 200 # Gasoline) mixing, then drop into azobisisobutyronitrile and stir to make it fully dissolve and mix uniformly to obtain an oil phase;

[0063] (b) add deionized water, polyvinyl alcohol and sodium chloride in the reaction vessel and mix, stir and heat up to make the three dissolve completely and mix uniformly to obtain the water phase; wherein, the volume of the deionized water is 4% of the volume of the oil phase times, the volume of polyvinyl alcohol is 0.02 times the volume of deionized water, and the mass fraction of sodium chloride accounts for 3% of the water mass;

[0064] (c) Mix the oil phase with the water phase, set the stirring speed to 600 rpm, and disperse the oil phase into liquid beads; then raise the temperature of the entire mixing system to 65°C, and heat up to 75°C after the liquid beads are shaped, and keep the tempera...

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 dichloromethane waste gas treatment equipment and method. The equipment comprises a spraying part and an adsorption part, the spraying part comprises a first spraying tower and a second spraying tower which communicate with each other in sequence, and the adsorption part comprises a buffer tank, adsorption towers, a condenser, a layering tank and a recovery storage tank which communicate with one another in sequence; the adsorption towers comprise a first adsorption tower, a second adsorption tower and a standby third adsorption tower which are connected in series, theadsorption towers are respectively filled with corresponding hydrophobic macroporous resin, and the adsorption towers respectively communicate with a desorption centrifugal pump; and the first spraytower communicates with a waste gas inlet pipe, and the second spray tower communicates with the buffer tank. Spraying and resin adsorption integrated equipment is adopted, most of dichloromethane inhigh-concentration dichloromethane gas can be recycled, and the concentration of the dichloromethane gas in tail gas reaches the emission standard. The equipment and method have the advantages that the energy consumption is lower, the service life is long, dioxin toxic substances are not easy to generate, the solvent can be recycled, and the like.

Description

technical field [0001] The invention relates to waste gas treatment equipment, in particular to a dichloromethane waste gas treatment equipment and method. Background technique [0002] Dichloromethane is widely used in the fields of medicine and film production. With the increase of the consumption of dichloromethane, the concern about its toxicity has begun to attract people's attention. Because dichloromethane is very harmful to the natural environment and human health, researchers at home and abroad have carried out various researches on the treatment technology of dichloromethane, among which the more mature technologies include condensation method, incineration method and adsorption method. [0003] (1) condensation method [0004] Generally, this method can be used for waste gas with small air volume and high concentration, but the concentration of organic matter in the condensed waste gas is still high, and further treatment is required to meet the standard, and the...

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): B01D53/02B01D53/18B01D53/78B01D47/06B01J20/26B01J20/28B01J20/30
CPCB01D47/06B01D53/02B01D53/18B01D53/78B01D2253/202B01D2253/308B01D2257/2064B01D2259/40083B01D2259/403B01D2259/41B01J20/26B01J20/28085Y02A50/20
Inventor 张志伟朱武斌殷松平张文辽
Owner HANGZHOU ZHONGHUAN ENVIRONMENTAL ENG
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