Full-temperature-range pressure swing adsorption method for removal and recovery of organic tail gas containing different concentrations of VOCs (volatile organic compounds)

A pressure swing adsorption, full temperature range technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the environmental health problems that cannot effectively solve the removal of VOCs, uneven component content, insufficient treatment depth, etc. problems, to achieve the effect of reducing investment and energy consumption, low energy consumption and cost, and solving high energy consumption

Inactive Publication Date: 2016-06-08
SICHUAN TECHAIRS
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a full temperature-range pressure swing adsorption method for the removal and recovery of organic tail gas containing different concentrations of VOCs, which solves the problem of insufficient treatment depth in the prior art and cannot effectively solve the environmental health problems caused by the removal of VOCs and their bitterness and irritating odor. It solves the problems of high energy consumption, high cost, and short device life in the existing technology, and also overcomes the limitations of the existing technology on the concentration of organic matter in the tail gas and the content of components.

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
  • Full-temperature-range pressure swing adsorption method for removal and recovery of organic tail gas containing different concentrations of VOCs (volatile organic compounds)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 As shown, the full temperature range pressure swing adsorption method for the removal and recovery of organic tail gas containing different concentrations of VOCs, the steps of the method are as follows:

[0034] (1) Pressure swing adsorption concentration process;

[0035] a. It is carried out in a pressure swing adsorption system. The pressure swing adsorption system consists of 4 adsorption towers, of which 1 to 3 adsorption towers are in the adsorption state, and the remaining adsorption towers are in the regeneration state. One or more of aluminum, molecular sieve, and desulfurizer; one or more adsorption towers into which the organic tail gas is passed for adsorption at the bottom, the adsorption pressure is 0.1~0.3Mpag, and the operating temperature is 60~80℃; multiple adsorption towers Alternate cycle operation to ensure continuous entry of organic tail gas;

[0036] b. The unadsorbed tail gas is discharged from the top of the adsorption tower. W...

Embodiment 2

[0044] like figure 1 As shown, the full temperature range pressure swing adsorption method for the removal and recovery of organic tail gas containing different concentrations of VOCs, the steps of the method are as follows:

[0045] (1) Pressure swing adsorption concentration process;

[0046] d. It is carried out in a pressure swing adsorption system. The pressure swing adsorption system consists of 8 adsorption towers, of which 1 to 7 adsorption towers are in the adsorption state, and the rest of the adsorption towers are in the regeneration state. One or more of aluminum, molecular sieve, and desulfurizer; one or more adsorption towers into which the organic tail gas is passed for adsorption at the bottom, the adsorption pressure is 0.3~0.4Mpag, and the operating temperature is 80~110℃; multiple adsorption towers Alternate cycle operation to ensure continuous entry of organic tail gas;

[0047] e. The unadsorbed tail gas is discharged from the top of the adsorption tower...

Embodiment 3

[0055] like figure 1 As shown, the full temperature range pressure swing adsorption method for the removal and recovery of organic tail gas containing different concentrations of VOCs, the steps of the method are as follows:

[0056] (1) Pressure swing adsorption concentration process;

[0057] a. It is carried out in a pressure swing adsorption system. The pressure swing adsorption system consists of 10 adsorption towers, of which 1 to 9 adsorption towers are in the adsorption state, and the rest of the adsorption towers are in the regeneration state. One or more of aluminum, molecular sieve and desulfurizer; one or more adsorption towers into which the organic tail gas is passed for adsorption at the bottom, the adsorption pressure is 0.5~0.6Mpag, and the operating temperature is 120~150℃; multiple adsorption towers Alternate cycle operation to ensure continuous entry of organic tail gas;

[0058] b. The unadsorbed tail gas is discharged from the top of the adsorption towe...

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 full-temperature-range pressure swing adsorption method for removal and recovery of organic tail gas containing different concentrations of VOCs (volatile organic compounds). According to the full-temperature-range pressure swing adsorption method, the organic tail gas enters a pressure swing adsorption and concentration process, operating pressure ranges from 0.1Mpa to 0.6Mpa, the temperature ranges from 60 DEG C to 150 DEG C, the concentration of the VOCs treated through the FTrPSA (full-temperature-range pressure swing adsorption) method is decreased to below 100ppm, and desorbed VOCs concentrated gas enters a VOCs recovery process after pressurization to further concentrate and recover the VOCs. The full-temperature-range pressure swing adsorption method for removal and recovery of the organic tail gas containing different concentrations of VOCs has the advantages that whole-concentration and full-component recovery of the tail gas containing high-concentration VOCs and energy-saving recovery making the most of energy are achieved, energy consumption of steam, electricity and circulating water is reduced substantially, and the tail gas with the VOCs removed effectively reaches national emission standards; the problems of inadequate treatment depth, incapability of removing the VOCs effectively, high energy consumption, high cost, short device service life and the like of the prior art are solved, and limitations on tail gas organic matter concentration and component content nonuniformity in the prior art are overcome.

Description

technical field [0001] The invention relates to the field of removal and recovery of organic waste gas VOCs, and more particularly relates to a full temperature range pressure swing adsorption method for removing and recovering organic tail gas containing VOCs with different concentrations. Background technique [0002] VOCs-containing industrial gases are widely found in many chemical processes and emissions from printing, shoemaking, automobiles, hardware appliances, and spraying in the aviation industry. Such exhaust gases have low concentrations of alcohols, ketones, benzene, esters, ethers, and sulfur. , has no recycling value, and most of them have toxic and strong irritating odors, which disturb the people and pollute the environment. Various VOCs-containing exhaust gases often contain uneven concentrations of VOCs, and some are relatively high. For example, the content of acetone and n-hexane in the VOCs emitted by the paint industry exceeds 1~3% (v / v% by volume), an...

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): B01D53/047B01D53/22
CPCB01D53/047B01D53/228B01D2253/102B01D2253/104B01D2253/106B01D2257/708Y02A50/20
Inventor 刘开莉陈运蔡跃明钟雨明
Owner SICHUAN TECHAIRS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap