Device system and method for ammonia-process flue gas desulfurization

A flue gas and ammonia process technology, which is applied in the field of ammonia process flue gas desulfurization device system, can solve the problems of large amount of spray liquid, inability to realize continuous production of by-product ammonium sulfate, etc., so as to improve utilization rate, reduce temperature, The effect of reducing consumption

Inactive Publication Date: 2021-03-12
GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the three-cycle desulfurization method of wet ammonia desulfurization can realize the hierarchical absorption of flue gas, there is a problem that the amount of spray liquid is relatively large, and the continuous output of by-product ammonium sulfate cannot be realized.

Method used

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  • Device system and method for ammonia-process flue gas desulfurization
  • Device system and method for ammonia-process flue gas desulfurization
  • Device system and method for ammonia-process flue gas desulfurization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] This embodiment provides a figure 1 The device system for ammonia-based flue gas desulfurization shown, the device system for ammonia-based flue gas desulfurization includes a desulfurization tower 2, a flue gas supply device 11, an oxidation gas supply device 12, a spray liquid storage tank 3, and a washing liquid storage tank 4. Absorption slurry post-processing device 5 and heat exchange device 7 .

[0077]The heat exchange device 7 is used to provide heat for the washing liquid in the washing liquid storage tank 4 .

[0078] The desulfurization tower 2 is arranged from bottom to top in the axial direction, including the slurry area, the first circulation area, the second circulation area, the third circulation area and the demisting area; it is arranged between the first circulation area and the second circulation area The gas separation tray 23 between the zones is connected to the spray liquid storage tank 3 through the spray slurry return pipeline 34; the gas se...

Embodiment 2

[0089] This embodiment provides a figure 2 The device system for ammonia-based flue gas desulfurization shown, the device system for ammonia-based flue gas desulfurization includes a desulfurization tower 2, a flue gas supply device 11, an oxidation gas supply device 12, a spray liquid storage tank 3, and a washing liquid storage tank 4. Absorption slurry post-processing device 5 and heat exchange device 7 .

[0090] The heat exchange device 7 is used to provide heat for the washing liquid in the washing liquid storage tank 4 ; the flue gas provided by the flue gas supply device 11 flows through the heat exchange device 7 , and then flows into the desulfurization tower 2 .

[0091] The desulfurization tower 2 is arranged from bottom to top in the axial direction, including the slurry area, the first circulation area, the second circulation area, the third circulation area and the demisting area; it is arranged between the first circulation area and the second circulation area...

Embodiment 3

[0101] This embodiment provides a image 3 The device system for ammonia-based flue gas desulfurization shown, the device system for ammonia-based flue gas desulfurization includes a desulfurization tower 2, a flue gas supply device 11, an oxidation gas supply device 12, a spray liquid storage tank 3, and a washing liquid storage tank 4. Absorption slurry post-processing device 5 and heat exchange device 7 .

[0102] The heat exchange device 7 is used to provide heat for the washing liquid in the washing liquid storage tank 4 ; the flue gas provided by the flue gas supply device 11 flows through the heat exchange device 7 , and then flows into the desulfurization tower 2 .

[0103] The desulfurization tower 2 is arranged from bottom to top in the axial direction, including the slurry area, the first circulation area, the second circulation area, the third circulation area and the demisting area; it is arranged between the first circulation area and the second circulation area ...

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Abstract

The invention provides a device system and a method for ammonia-process flue gas desulfurization. The device system comprises a desulfurization tower, a flue gas supply device, an oxidizing gas supplydevice, a spraying liquid storage tank, a washing liquid storage tank, an absorption slurry post-treatment device and a heat exchange device, the heat exchange device is used for providing heat for the washing liquid in the washing liquid storage tank; according to the device system disclosed by the invention, a one-tower three-cycle mode is utilized, so that the use amount of slurry can be reduced, the formation of aerogel is effectively reduced in a step cycle mode, and the continuous production of ammonium sulfate can be realized; moreover, the method disclosed by the invention can be usedfor fully utilizing the heat of the flue gas and effectively avoiding a 'white fog' phenomenon by treating the exhausted flue gas, so that the white smoke eliminating effect is improved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a desulfurization device system and a desulfurization method, in particular to a device system and a method for ammonia flue gas desulfurization. Background technique [0002] Ammonia flue gas desulfurization refers to a wet flue gas desulfurization process that uses amino substances as absorbents to remove sulfur dioxide in flue gas and recover by-products. This process can desulfurize efficiently and partially remove nitrogen oxides in flue gas , the by-product is ammonium sulfate, so that resource recycling can be realized, and it is the most effective and environmentally friendly method to control acid rain and sulfur dioxide pollution. [0003] The desulfurization tower is the most critical device in ammonia flue gas desulfurization. The rationality of the structure of the absorption tower is directly related to the desulfurization efficiency, desulfurization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/50C01C1/24
CPCB01D53/502B01D2251/2062B01D2258/0283C01C1/24
Inventor 杨森林胡静龄钟璐杨颖欣刘勇胡小吐
Owner GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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