Device and method for dry-type collaborative purification and indirect cooling of fixed bed gas oily dust

A fixed bed and gas technology, applied in chemical instruments and methods, combustible gas purification, combustible gas purification/transformation, etc., can solve the problem of large investment in fine dust removal and water treatment facilities, increased investment and raw material consumption, and general cooling dust removal effect and other problems, to achieve the effect of solving the problem of difficult ammonia nitrogen treatment and water balance, good gas purification effect, and solving huge equipment

Pending Publication Date: 2020-08-14
中科合肥煤气化技术有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to the direct cooling (washing) process, the sewage produced also contains a large amount of tar, phenol, ammonia and other substances, so it is necessary to build a tar recovery device, and the phenol, ammonia recovery and biochemical treatment devices increase investment and raw material consumption
[0005] Regardless of the early or current fixed-bed coal gasification technology, there are problems such as large amount of dust carried out, incomplete dust removal, and direct water cooling for dust removal and cooling. Direct contact for heat and mass transfer to reduce the gas to normal temperature
Although this method has a simple process and a better cooling effect, the direct cooling dust removal effect is general, and the dust in the gas is discharged into the cooling water. Even if another water treatment and sedimentation facility is installed for treatment, it cannot be completely removed, resulting in investment in fine dust removal and water treatment facilities. Large size, low efficiency, and difficult operation and management have become a "fortress" restricting the survival and development of coal gasification enterprises

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
  • Device and method for dry-type collaborative purification and indirect cooling of fixed bed gas oily dust
  • Device and method for dry-type collaborative purification and indirect cooling of fixed bed gas oily dust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] use figure 1 The shown fixed bed gas oil dust dry synergy purification and indirect cooling device, according to figure 2 The process flow shown is for the treatment of crude gas from a batch fixed-bed gasifier in a factory. The moisture content of the crude gas is 35wt%, and the dust content is 20g / Nm 3 , the tar content is 10mg / Nm 3 , the specific ingredients are shown in Table 1.

[0064] Table 1 Crude gas composition

[0065] Element CO H 2

CH 4

CO 2

N 2

O 2

total Content (dry basis) 28％ 43％ 1.3％ 8.3％ 19.1％ 0.3％ 100％

[0066] The oil and dust pre-removal device 1 in the fixed-bed coal gas, oil and dust dry-type collaborative purification and indirect cooling device is a cold-wall cyclone separator, and a membrane wall is arranged outside the shell, and the dry-type dust collector 2 is a filter-type dust collector. The filter material used is PTFE+PTFE coated cloth bag, and the indirect cooler 3 is specifical...

Embodiment 2

[0075] use figure 1 The shown fixed bed gas oil dust dry synergy purification and indirect cooling device, according to figure 2 The process flow shown is for the treatment of crude gas from a batch fixed-bed gasifier in a factory. The moisture content of the crude gas is 30wt%, and the dust content is 40g / Nm 3 , the tar content is 30mg / Nm 3 , the specific ingredients are shown in Table 2.

[0076] Table 2 Crude gas composition

[0077] Element CO H 2

CH 4

CO 2

N 2

O 2

total Content (dry basis) 39％ 42％ 2.0％ 16％ 0.4％ 0.6％ 100％

[0078] The oil and dust pre-removal device 1 in the fixed-bed coal gas, oil and dust dry-type collaborative purification and indirect cooling device is a cold-wall cyclone separator, and a water jacket is arranged outside the shell, and the dry-type dust collector 2 is a filter-type dust collector. The filter material used is PTFE+PTFE coated cloth bag, and the indirect cooler 3 is specifically ...

Embodiment 3

[0087] use figure 1 The shown fixed bed gas oil dust dry synergy purification and indirect cooling device, according to figure 2 The process flow shown is for the treatment of crude gas from a batch fixed-bed gasifier in a factory. The moisture content of the crude gas is 15wt%, and the dust content is 30g / Nm 3 , the tar content is 20mg / Nm 3 , the specific ingredients are shown in Table 3.

[0088] Table 3 Crude gas composition

[0089] Element CO H 2

CH 4

CO 2

N 2

O 2

total Content (dry basis) 31％ 38％ 2.5％ 8.1％ 20.1％ 0.3％ 100％

[0090] The oil and dust pre-removal device 1 in the fixed bed gas oil dust dry collaborative purification and indirect cooling device is a cold wall cyclone separator, and a coil is arranged outside the shell, and the dry dust collector 2 is a filter dust collector , the filter material used is PTFE+PTFE coated cloth bag, and the indirect cooler 3 is specifically a heat pipe heat exchanger.

...

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 provides a device and a method for dry-type collaborative purification and indirect cooling of fixed bed gas oily dust, and belongs to the technical field of gas treatment. The device provided by the invention is reasonable in overall structure arrangement, good in coal gas purification effect, energy-saving and environment-friendly. Specifically, an oily dust pre-removal device 1, adry dust collector 2 and an indirect cooler 3 are adopted, dust and tar in coal gas can be efficiently and synergistically purified and separated, and the content of impurities in coal gas condensateis low, so that the problems of oil-containing, phenol-containing and dust-containing wastewater pollution and difficulty in treatment in the traditional coal gasification direct cooling process canbe solved. The oily dust pre-removal device 1 and the dry dust collector 2 are adopted, so that the dust and tar separation efficiency is high, and the problem that tar contained in the coal gas adheres to and blocks a dust removal system can be solved; the indirect cooler 3 and a steam stripping ammonia distillation system 4 are adopted, condensate water with ammonia nitrogen removed can be usedas circulating water replenishing water, and water consumption is low, and therefore, the problem that ammonia nitrogen in coal gas condensate water is difficult to treat and a water balance problem can be solved.

Description

technical field [0001] The invention relates to the technical field of gas treatment, in particular to a fixed-bed gas, oil and dust dry collaborative purification and indirect cooling device and method. Background technique [0002] At present, the coal gasification technologies that have been industrialized in my country mainly include atmospheric-pressure fixed-bed intermittent anthracite (or coke) gasification technology, atmospheric-pressure fixed-bed anthracite (or coke) oxygen-enriched continuous gasification technology, and Lurgi fixed-bed coal gasification technology. Pressurized gasification technology, ash fusion fluidized bed pulverized coal gasification technology, Ender fluidized bed (Winkler) pulverized coal gasification technology, GE Texaco (Texaco) coal water slurry pressurized gasification technology, Shell (Shell) Dry coal powder pressurized gasification technology, GSP dry coal powder pressurized gasification technology, pure oxygen continuous gasification...

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): C10K1/02C10K1/04C10K1/00B01D50/00
CPCC10K1/026C10K1/046C10K1/02C10K1/024C10K1/001B01D50/10
Inventor 阳绍军刘璐莫国强陈武李正林
Owner 中科合肥煤气化技术有限公司
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