Industrial flue gas treatment process

A treatment process and technology for industrial flue gas, applied in gas treatment, combined device, membrane technology, etc., can solve the problems of industrial waste gas pollution, air pollution, ineffective treatment equipment and methods, etc., to reduce selenium content and improve recovery. The effect of efficiency

Pending Publication Date: 2020-04-24
徐州鸿誉环境科技有限公司
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AI Technical Summary

Problems solved by technology

Air pollution mainly includes industrial waste gas pollution. How to solve air pollution has become an urgent problem. In the metallurgical field, especially in the blowing process, a large amount of flue gas is usually produced. The country's environmental protection requirements are becoming increasingly stringent. The gas needs to be purified before being discharged. However, there is currently no effective treatment equipment and method for the flue gas containing selenium dioxide.

Method used

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Embodiment Construction

[0022] An industrial flue gas treatment process, an industrial flue gas treatment process, the specific steps are as follows:

[0023] Step 1) flue gas cooling: cooling the flue gas to obtain cooled flue gas;

[0024] Step 2) flue gas dehydration: the flue gas cooled in step 1 is dehydrated to obtain dehydrated dry flue gas;

[0025] Step 3) flue gas washing: washing the dried flue gas obtained by dehydration in step 2 to obtain washed flue gas and washing liquid;

[0026] Step 4) The flue gas washed in step 3 enters the selenium reduction reaction kettle for reducing the washing liquid and sulfur dioxide to generate a mixture containing elemental selenium;

[0027] Step 5) The mixture containing elemental selenium obtained in step 4 is sent to a separator, and the mixture containing elemental selenium is separated, and selenium is recovered through separation.

[0028] Furthermore, the cooling device is a spray cooler.

[0029] Furthermore, the dehydration device is a cycl...

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Abstract

The invention relates to the technical field of atmospheric pollution treatment, and in particular, relates to an industrial flue gas treatment process which comprises the following specific steps: cooling flue gas to obtain cooled flue gas; dehydrating the cooled flue gas to obtain dehydrated dry flue gas; washing the dry flue gas obtained by dehydration in the step 2 to obtain washed flue gas and a washing solution; enabling the flue gas washed in the step 3 to enter a selenium reduction reaction kettle and be used for enabling the washing solution and sulfur dioxide to be subjected to a reduction reaction, and thus generating a mixture containing elemental selenium; sending the mixture containing elemental selenium and obtained in the step 4 into a separator, separating the mixture containing elemental selenium, and separating and recovering selenium.

Description

technical field [0001] The invention relates to the technical field of air pollution treatment, in particular to an industrial flue gas treatment process. Background technique [0002] Technology is developing, society is progressing, and people's living standards are constantly improving, but the accompanying environmental pollution is also becoming more and more serious. Environmental pollution mainly includes air pollution, sudden pollution and water pollution. Air pollution mainly includes industrial waste gas pollution. How to solve air pollution has become an urgent problem. In the metallurgical field, especially in the blowing process, a large amount of flue gas is usually produced. The country's environmental protection requirements are becoming increasingly stringent. The gas needs to be purified before being discharged. However, there is currently no effective treatment equipment and method for the flue gas containing selenium dioxide. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D50/00B01D53/78
CPCB01D53/507B01D53/26B01D2258/0283B01D50/40
Inventor 邵科
Owner 徐州鸿誉环境科技有限公司
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