Detarring and dedusting integration process and device for oil-containing explosive gas

A technology for explosive gas and tar, which is applied in the direction of using liquid separating agent, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of high material cost, high coal tar content, high dust removal technology requirements, etc., and achieves investment and operation costs. Low, low system resistance, small footprint effect

Inactive Publication Date: 2010-12-22
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of coal gasification synthesis gas is complex, the content of coal tar is high, and it also contains corrosive and flammable and explosive gases. Therefore, the requirements for dust removal technology are relatively high, and the dust removal effect of conventional dust removal methods (such as electrostatic precipitator and bag filter) is difficult to achieve. Require
High-temperature ceramic filters are currently a research hotspot in the field of high-temperature coal gasification and dust removal. However, their mechanical and thermal shock resistance and thermal stability still need to be improved. At the same time, their material costs are high, and they are still far away from commercial applications.
[0004] CN2469981Y discloses a "high-efficiency gas filter" that can be used for coal gasification and dust removal. The dust in the gas is separated by multi-layer graded filter material. In the application of gasification plants, the system resistance is as high as 60kPa, and the filter material needs to be replaced or cleaned regularly, so continuous operation cannot be realized

Method used

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  • Detarring and dedusting integration process and device for oil-containing explosive gas
  • Detarring and dedusting integration process and device for oil-containing explosive gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The above-mentioned device and process are used to perform integrated and coordinated degreasing and dust removal of gas, and the slurry used is 2.0% Na 2 CO 3 Solution, the flue gas flow rate is 1500Nm 3 The immersion depth of the bubble tube is 250mm, the spacing between adjacent bubble tubes is 120mm, the baffle spacing of the primary demister is 35mm, the baffle spacing of the secondary demister is 20mm, and the inlet dust concentration is 250mg / Nm 3 , The coal tar content is 65mg / Nm 3 When the dust removal efficiency is more than 85%, the coal tar removal rate is more than 80%.

Embodiment 2

[0041] The above-mentioned device and process are used to perform integrated and coordinated degreasing and dust removal of gas. The slurry used is 1.0% NaOH solution with a mass fraction of 1.0%, and the flue gas flow rate is 1500Nm. 3 The immersion depth of the bubble tube is 250mm, the spacing between adjacent bubble tubes is 200mm, the baffle spacing of the primary demister is 35mm, the baffle spacing of the secondary demister is 20mm, and the inlet dust concentration is 250mg / Nm 3 , The coal tar content is 65mg / Nm 3 When the dust removal efficiency is more than 88%, the coal tar removal rate is more than 85%.

Embodiment 3

[0043] The above-mentioned device process is used to carry out integrated and coordinated degreasing and dust removal of the gas. The slurry used is a KOH solution with a mass fraction of 1.0%, and the flue gas flow rate is 1500Nm 3 The immersion depth of the bubble tube is 250mm, the spacing between adjacent bubble tubes is 260mm, the baffle spacing of the primary demister is 35mm, the baffle spacing of the secondary demister is 20mm, and the inlet dust concentration is 250mg / Nm 3 , The coal tar content is 65mg / Nm 3 When the dust removal efficiency is more than 90%, the coal tar removal rate is more than 85%.

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Abstract

The invention discloses a detarring and dedusting integration process for oil-containing explosive gas, which comprises the steps of spraying, oil removal and dedusting of serous fluid, defogging and the like. The invention also discloses a detarring and dedusting integration device for the oil-containing explosive gas, which is used for the process. The device comprises a serous fluid tank, a tower body and an outlet flue, wherein the serous fluid tank is connected with the tower body by an overflow pipeline; an inlet flue is formed on the tower body; an inlet spray nozzle is arranged in the inlet flue; the serous fluid tank is connected to the inlet spray nozzle through a circulation pipeline; a tower internal stirrer, an upper baffle, a lower baffle, an original flue gas chamber of a flue gas cleaning chamber, a flue gas cleaning exhaust pipe, a spray bubbling pipe and a tower internal spray nozzle are arranged in the tower body; and a serous fluid tank stirrer is arranged in the serous fluid tank. The device has the advantages of removing oil stains and fine dust simultaneously in the same device, along with low investment running cost, small floor area, totally-enclosed design and function of cooling the flue gas and can be used for treating inflammable and explosive gas.

Description

Technical field [0001] The invention relates to the field of coal gasification and dust removal, in particular to an integrated process and device for removing tar and dust from oil-containing explosive gas. Background technique [0002] my country is a large coal storage and coal production country. Coal accounts for more than 70% of the country's primary energy. At the same time, my country's natural gas reserves and production are relatively poor, and there is a big contradiction between oil supply and demand, and a large amount of crude oil needs to be imported every year. Therefore, vigorously developing coal chemical industry is one of the effective ways to solve the shortage of natural gas and oil in our country, adjust the energy structure, and solve the energy crisis facing the 21st century. Coal gasification technology is a clean comprehensive utilization technology of coal, which can avoid the pollution caused by the direct combustion of coal, and it will flourish in ...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/18B01D47/06B01D47/02B01D53/14
Inventor 吴忠标盛海强杨夕周伟阮徐均任其龙陈丰秋何潮洪陈新志荣冈
Owner ZHEJIANG UNIV
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