Graded purification device and graded purification method for dusty gas

A technology for purifying equipment and gases, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc., which can solve problems such as equipment blockage, low processing efficiency, and large proportion of ultrafine ash in the purification process

Active Publication Date: 2015-06-03
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the low processing efficiency of the ash-containing gas with high ash content in the ash gas, ultra-fine ash less than 1 μm in the prior art, and a large proportion of the fine ash particles with strong hydrophobicity. High, the proportion of ultra-fine ash below 1 μm in the treated gas is large, and it is easy to cause the blockage of the equipment in the purification process. A kind of graded purification equipment and a graded purification method of ash-containing gas are provided.

Method used

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  • Graded purification device and graded purification method for dusty gas
  • Graded purification device and graded purification method for dusty gas
  • Graded purification device and graded purification method for dusty gas

Examples

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Embodiment 1

[0055] A kind of graded purification equipment for ash-containing gas, such as figure 1 As shown: the classification purification equipment includes a spray tower 1, a venturi scrubber 2, a separator 3, a foam scrubber 4 and a circulating water pump 5 connected in sequence;

[0056] (1) Spray tower:

[0057] The spray tower 1 can be a separate spray tower, or a spray tower coupled with other equipment in the upstream process;

[0058] This spray tower 1 comprises a spray tower tower body 10, a spray layer 13, a first liquid inlet 11, a first gas inlet 12, a first gas outlet 14 and a first waste water outlet 15; The shower layer 13 is located on the upper part of the spray tower 1 and communicates with the first liquid inlet 11; the first gas inlet 12 and the first liquid inlet 11 are located on the side of the spray tower body 10, the The first gas inlet 12 is positioned below the first liquid inlet 11; the first gas outlet 14 is positioned at the top of the spray tower body...

Embodiment 2

[0071] A kind of graded purification equipment for ash-containing gas, such as figure 1 As shown: the classification purification equipment includes a spray tower 1, a venturi scrubber 2, a separator 3, a foam scrubber 4 and a circulating water pump 5 connected in sequence;

[0072] (1) Spray tower:

[0073] The spray tower 1 can be a separate spray tower, or a spray tower coupled with other equipment in the upstream process;

[0074] This spray tower 1 comprises a spray tower tower body 10, a spray layer 13, a first liquid inlet 11, a first gas inlet 12, a first gas outlet 14 and a first waste water outlet 15; The shower layer 13 is located on the upper part of the spray tower 1 and communicates with the first liquid inlet 11; the first gas inlet 12 and the first liquid inlet 11 are located on the side of the spray tower body 10, the The first gas inlet 12 is positioned below the first liquid inlet 11; the first gas outlet 14 is positioned at the top of the spray tower body...

Embodiment 3

[0087] A kind of graded purification equipment for ash-containing gas, such as figure 1 Shown: the equipment includes a spray tower 1, a venturi scrubber 2, a separator 3, a foam scrubber 4 and a circulating water pump 5 connected in sequence;

[0088] (1) Spray tower:

[0089] The spray tower 1 can be a separate spray tower, or a spray tower coupled with other equipment in the upstream process;

[0090] This spray tower 1 comprises a spray tower tower body 10, a spray layer 13, a first liquid inlet 11, a first gas inlet 12, a first gas outlet 14 and a first waste water outlet 15; The shower layer 13 is located on the upper part of the spray tower 1 and communicates with the first liquid inlet 11; the first gas inlet 12 and the first liquid inlet 11 are located on the side of the spray tower body 10, the The first gas inlet 12 is positioned below the first liquid inlet 11; the first gas outlet 14 is positioned at the top of the spray tower body 10; the first waste water outl...

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Abstract

The invention discloses a graded purification device and graded purification method for dusty gas. The graded purification device comprises a spray tower, a venturi scrubber, a separator and a foam scrubber connected orderly. In the graded purification method, the graded purification device is used. The method comprises the following steps: orderly introducing to-be-treated gas into the spray tower, scrubbing, further scrubbing through the venturi scrubber, separating through the separator, and finally, scrubbing in the foam scrubber. Water temperature in the spray tower is 10-200 DEG C, lower than the temperature of the to-be-treated gas, 0.001-10L of water is used for per cubic meter of the to-be-treated gas; water temperature in the venture scrubber is 10-200 DEG C, lower than the gas temperature, and 0.001-10L of water is used for per cubic meter of primarily treated gas; and water temperature in the foam scrubber is 0-200 DEG C, lower than the gas temperature. Removal rate of ultrafine particles by adopting the purification method provided by the invention is 95% or more, and the content of fine ash in clean synthetic gas is 1.0mg / Nm<3> or less.

Description

technical field [0001] The invention relates to a graded purification device for ash-containing gas and a graded purification method for ash-containing gas. Background technique [0002] Based on the needs of industrial production and environmental protection, ash-containing gas often needs to be purified before it enters the subsequent section or is discharged into the atmosphere to meet the requirements of industrial production and atmospheric emissions for the ash content in the gas. According to the nature and requirements of the process and the physical and chemical characteristics of the ash particles in the gas, different ash-containing gas purification processes have been formed in the actual industrial process. [0003] Wet scrubbing has a relatively high removal efficiency for fine ash larger than 1 μm. When the proportion of ash in the ash-containing gas is not very high, the content of fine ash is more but the content of ultra-fine ash less than 1 μm is low, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00
Inventor 陈雪莉龚欣郭晓镭代正华许建良于广锁刘海峰王辅臣王亦飞周志杰梁钦锋李伟锋王兴军郭庆华刘霞
Owner EAST CHINA UNIV OF SCI & TECH
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