Supercharge Your Innovation With Domain-Expert AI Agents!

Purification and recovery method of coking waste gas

A recovery method and waste gas technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of substandard emissions and high operating costs, and achieve the effect of long service life

Pending Publication Date: 2019-04-19
湖北申昙环保新材料有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problem of substandard emissions and high operating costs in the prior art in the VOC treatment process of coking plants, and adopts a method for purifying and recovering coking waste gas with a fixed bed of hydrophobic molecular sieve. The method has safe and stable operation, Advantages of low operating costs

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
  • Purification and recovery method of coking waste gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] a. Coking exhaust gas enters the buffer tank, and after pre-filtering dust, viscous organic matter and moisture, stream I is formed;

[0034] b. Stream I enters adsorption tower A, which is filled with molecular sieve adsorbents to absorb hydrogen sulfide, ammonia, hydrogen cyanide and other acid gases, tar, naphthalene, benzene series, polycyclic and heterocyclic aromatic hydrocarbons and organic sulfur. Form logistics Ⅱ;

[0035] c. Logistics II is discharged through the chimney;

[0036] d. When the adsorption tower A is saturated, switch to the standby adsorption tower B for adsorption, and the adsorption tower A enters the regeneration process, and the desorbed gas is regenerated to form stream III;

[0037] e. Stream Ⅲ enters the cooler for cooling, and the cooled liquid is discharged into the liquid storage tank to collect and recover aromatics; the cooled gas forms stream Ⅳ, returns to adsorption tower B, and re-adsorbs and purifies;

[0038] f. Dry the regene...

Embodiment 2

[0044] a. Coking exhaust gas enters the buffer tank, coarsely filters dust, viscous organic matter and moisture to form stream Ⅰ;

[0045] b. Stream I enters an adsorption tower in the adsorption device combination a, and the adsorption device combination a contains at least 2 adsorption towers,

[0046] Each adsorption tower is filled with molecular sieve adsorbent A to absorb hydrogen sulfide, ammonia, hydrogen cyanide and other acid gases to form stream II;

[0047] c. Stream II enters the adsorption device combination b, which contains at least 2 adsorption towers, and each adsorption tower

[0048] Molecular sieve adsorbent B is filled in the middle to adsorb tar, naphthalene, benzene series, polycyclic and heterocyclic aromatic hydrocarbons and organic sulfur to form stream III;

[0049] d. Logistics Ⅲ up-to-standard discharge;

[0050] e. When the adsorption towers in the adsorption device combinations a and b are saturated, each switch to another adsorption tower in ...

Embodiment 3

[0060] Coking exhaust gas enters the buffer tank, coarsely filters dust, viscous organic matter and moisture, and forms stream Ⅰ;

[0061] Stream I enters an adsorption tower in the adsorption device combination a, and the adsorption device combination a contains at least 2 adsorption towers,

[0062] Each adsorption tower is filled with molecular sieve adsorbent A to absorb hydrogen sulfide, ammonia, hydrogen cyanide and other acid gases to form stream II;

[0063] Stream II enters the adsorption device combination b, which contains at least 2 adsorption towers, and each adsorption tower

[0064] Molecular sieve adsorbent B is filled in the middle to adsorb tar, naphthalene, benzene series, polycyclic and heterocyclic aromatic hydrocarbons and organic sulfur to form stream III;

[0065] Logistics Ⅲ up-to-standard discharge;

[0066] When the adsorption towers in the adsorption device combinations a and b are saturated, each switch to another adsorption tower in the group fo...

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 purification method for coking waste gas, and mainly solves the technical problems of single adsorption variety of activated carbon adsorbed coking waste gas, no high temperature resistance and excessive emission of waste gas in the prior art. The method includes the steps of: sending coking waste gas into a buffer tank, performing coarse filtration, then letting the filtered waste gas enter a two-stage adsorption device to adsorb hydrogen sulfide, ammonia gas, hydrogen cyanide and other acidic gases, tar, naphthalene, benzene series, polycyclic and heterocyclic aromatic hydrocarbons as well as organic sulfur in the coking waste gas, emptying the purified gas, letting an adsorbed and saturated adsorption tower enter a regeneration procedure, sending the regenerated concentrated gas enter a cooler, and bringing the cooled liquid into a liquid storage pot for collection. The technical scheme well solves the problems, and can be used for purification and recovery method of coking waste gas.

Description

technical field [0001] The invention belongs to the technical field of waste gas treatment, in particular to a method for purifying and recovering coking waste gas. Background technique [0002] With the rapid development of the iron and steel industry, the coking industry has made great progress, but the environmental pollution is also becoming more and more serious. As the country proposes policies such as capacity reduction and structural adjustment, environmental protection will be one of the rigid targets for the coking industry. Among the various environmental protection issues in the coking industry, the pollution of waste gas from the coking industry is particularly prominent. There are many kinds of coking waste gas pollutants, generally including inorganic waste gas and organic waste gas. Inorganic waste gas is mainly hydrogen sulfide, ammonia gas, and hydrogen cyanide. Aromatics, etc. Inorganic waste gas mainly comes from coke oven gas, release from ammonium su...

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): B01D53/04B01D46/00
CPCB01D53/04B01D46/00B01D2253/108B01D2257/304B01D2257/306B01D2257/406B01D2257/408B01D2257/7027B01D2259/4009
Inventor 马广伟宋晶
Owner 湖北申昙环保新材料有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com