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

Method and equipment for simultaneously removing VOCs and PM2.5

A technology of coolers and compressors, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of combustion waste gas containing dioxins, secondary pollution, and high treatment costs, and achieve easy implementation and no secondary Pollution, the effect of simple operation of the device

Pending Publication Date: 2020-06-30
GUANGXI UNIV
View PDF21 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally high treatment costs and secondary pollution problems. For example, the adsorption method has the secondary pollution problems of desorption exhaust gas and deactivated adsorption materials; the combustion method has secondary pollution problems such as combustion exhaust gas containing dioxins and NOx.

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 and equipment for simultaneously removing VOCs and PM2.5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A device for simultaneously removing VOCs and PM2.5, including a compressor 1, a mixer 2, a preheater-cooler 3, a high-temperature preheater 4, a super / subcritical reactor 5, a turboexpander 6, and a waste heat boiler 7. Gas-liquid separator 8, booster pump 9.

[0047] The gas outlet of the compressor 1 is connected to the feed port of the mixer 2, and the compressor 1 is used for compressing waste gas to be removed. The mixer 2 is connected to the preheater-cooler 3, and the mixer 2 is used for mixing waste gas with water or hydrogen peroxide. The high-temperature preheater 4 is connected to the above-mentioned preheater-cooler 3 , and the super / subcritical reactor 5 is connected to the above-mentioned high-temperature preheater 4 . Turboexpander 6 is connected with described super / subcritical reactor 5, and the fluid that flows out by described super / subcritical reactor 5 drives described turboexpander 6 to do work externally, and described turboexpander 6 The coaxi...

Embodiment 2

[0051] Utilize the device described in embodiment 1 as reaction device, remove the method for VOCs and PM2.5 simultaneously, operation steps are as follows:

[0052] The exhaust gas containing both VOCs and PM2.5 is boosted from normal pressure to 4.0MPa by compressor 1, with a flow rate of 1 million m 3 / h enters the mixer 2; water is pressurized from normal pressure to 4.0MPa through the booster pump 9, and the flow rate is 10.0kg / h, enters the mixer 2 to blend with the exhaust gas, and the resulting mixture enters the preheating-cooler 3 to heat up to 150°C , and then enter the high-temperature preheater 4 to raise the temperature to 600° C., the mixture has a temperature of 600° C. and a pressure of 4.0 MPa, and is a supercritical fluid. The fluid enters the super / subcritical reactor 5 for water oxidation reaction while removing VOCs and PM2.5, and reacts in the super / subcritical reactor 5 for 4 minutes. The high-temperature and high-pressure fluid with a temperature of 6...

Embodiment 3

[0054] Utilize the device described in embodiment 1 as reaction device, remove the method for VOCs and PM2.5 simultaneously, operation steps are as follows:

[0055] The exhaust gas containing both VOCs and PM2.5 is boosted from normal pressure to 40.0MPa through compressor 1, with a flow rate of 100m 3 / h enters the mixer 2; the hydrogen peroxide is boosted from normal pressure to 40.0MPa through the booster pump 9, and the flow rate is 100kg / h, enters the mixer 2 and blends with the exhaust gas, and the resulting mixture enters the preheating-cooler 3 to heat up to 340°C , and then enter the high-temperature preheater 4 to raise the temperature to 700° C., the mixture has a temperature of 700° C. and a pressure of 40.0 MPa, and is a supercritical fluid. The fluid enters the super / subcritical reactor 5 for water oxidation reaction while removing VOCs and PM2.5, and reacts in the super / subcritical reactor 5 for 0.5 min. The high-temperature and high-pressure fluid with a temp...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for simultaneously removing VOCs and PM2.5. The method comprises the following steps: (1) pressurizing waste gas containing VOCs and / or PM2.5 by a compressor and thenconveying the waste gas to a mixer; (2) pressurizing water or hydrogen peroxide through a pressurizing pump, conveying the pressurized water or hydrogen peroxide to a mixer for mixing, and conveying an obtained mixture to a preheating-cooling device and a high-temperature preheater for heating; (3) performing water oxidation reaction in a supercritical / subcritical reactor to remove VOCs and PM2.5;(4) conveying high-temperature and high-pressure fluid flowing out of a turbo expander into a preheating-cooling device to heat the materials; (5) taking high-temperature and high-pressure fluid flowing out of the preheating-cooling device as a heat source of a waste heat boiler to generate superheated steam; and (6) conveying fluid flowing out of the waste heat boiler into a gas-liquid separatorafter pressure reduction, and carrying out separation of gas and liquid. The method provided by the invention does not need any adsorbent, flocculant or catalytic combustion, and the device is simpleto operate, energy-saving, environment-friendly and easy to implement.

Description

technical field [0001] The invention relates to a method for removing VOCs and PM2.5, in particular to a method and equipment for removing VOCs and PM2.5. Background technique [0002] Volatile organic compounds (Volatile organic compounds, VOCs) and PM2.5 are one of the important causes of photochemical smog, excessive ozone pollution and haze weather. There are many kinds of VOCs, most of which are highly toxic, seriously endangering human health and destroying the ecological environment. VOCs treatment technologies mainly include adsorption method, absorption method, catalytic combustion method, biological treatment method, photocatalytic oxidation method, low temperature plasma treatment method and gas membrane separation method, etc. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 μm in the atmosphere, which is called inhalable fine particulate matter. PM2.5 causes great harm to ecology, climate and health. The main control methods of PM2....

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): B01D53/74B01D53/44B01D49/00
CPCB01D53/44B01D53/74B01D49/00B01D2251/106B01D2257/708Y02A50/20
Inventor 陈小鹏梁杰珍王琳琳周丹韦小杰
Owner GUANGXI UNIV
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