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Semidry-method desulfurization system

A semi-dry desulfurization and denitrification technology, applied in the field of desulfurization, can solve the problems of large water consumption and achieve the effects of reducing water consumption, saving resources and reducing layout

Inactive Publication Date: 2019-03-19
杭州宁骏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by technical and economic conditions, it is necessary to develop desulfurization technologies and processes that have strong applicability to coal combustion, high desulfurization rate, high system availability, simplified process, low system power consumption, and low investment and operating costs.
[0003] At present, the most commonly used desulfurization method is wet desulfurization, because the desulfurization efficiency of wet desulfurization is high, but the wet desulfurization system also has shortcomings, such as large water consumption.

Method used

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Examples

Experimental program
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Embodiment 1

[0033] Example 1: refer to figure 1 , which is a semi-dry desulfurization system disclosed in the present invention, including a vertically arranged reaction tower 1 , a dust collector 3 , a powder storage bin 2 , and an ash bin 39 .

[0034] An inlet pipe 13 is communicated with the peripheral wall of the lower end of the reaction tower 1, and the flue gas to be purified can enter the reaction tower 1 from the inlet pipe 13; the lower end of the reaction tower 1 is provided with an opening for ash discharge, and an ash discharge valve is provided at the opening 15. The ash discharged from the lower end of the reaction tower 1 can be transported to the ash disposal field. A gas conduit 14 is connected to the peripheral wall at the top of the reaction tower 1 .

[0035] The reaction tower 1 includes a desulfurization reaction zone 12 and a denitration reaction zone 11 , and the flue gas passes through the denitration reaction zone 11 and the desulfurization reaction zone 12 in...

Embodiment 2

[0051] Embodiment 2: refer to figure 2 , which is a semi-dry desulfurization system disclosed in the present invention, which is different from the first embodiment in that the positions of the desulfurization reaction zone 12 and the denitration reaction zone 11 are exchanged, and a first heating device is installed on the gas conduit 14 141, but does not have a temperature control circuit.

[0052] Wherein, the first heating device 141 can be a hot air circulating electric heater, and the air duct 14 can be divided into a front section and a rear section, the front section is connected between the reaction tower 1 and the first heating device 141, and the rear section is connected to the first heating device 141 and dust collector 3.

[0053] The implementation principle of this embodiment is as follows: the flue gas passes through the desulfurization reaction zone 12, the denitration reaction zone 11, and the dust collector 3 in sequence. 2 reaction, SO 2 can eventually...

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Abstract

The invention relates to a semidry-method desulfurization system, relating to the technical field of desulfurization. Existing wet desulphurization has the problems of large water consumption and thelike. According to the scheme, the semidry-method desulfurization system comprises a reaction tower, a dust remover and a powder storage bin, wherein an air inlet pipe is communicated to the lower endof the reaction tower, an air guiding pipe is communicated to the peripheral wall of the reaction tower, and a reaction channel is formed between the air guiding pipe and the air inlet pipe; a flow guiding chute is communicated to the peripheral wall of the reaction tower, a discharging pipe is connected to the powder storage bin, and one end of the discharging pipe is communicated with the flowguiding chute; a desulfurization water inlet pipe is communicated to the peripheral wall of the reaction tower; an ash guiding main pipe is connected to a dust outlet of the dust remover, an ash bin is connected to the lower end of the ash guiding main pipe, an ash guiding branched pipe is communicated to the peripheral wall of the ash guiding main pipe, and one end, far from the dust remover, ofthe ash guiding branched pipe is communicated into the flow guiding chute; and an adjusting circuit is arranged on the air guiding pipe. By carrying out desulfuration through a semidry method, the total water consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a semi-dry desulfurization system. Background technique [0002] The acid rain formed by sulfur dioxide emitted by thermal power plants has seriously endangered the living environment of human beings. The state mandates that thermal power plants must install flue gas desulfurization devices. However, limited by technical and economic conditions, it is necessary to develop desulfurization technologies and processes with strong applicability to coal combustion, high desulfurization rate, high system availability, simplified process, low system power consumption, and low investment and operating costs. . [0003] At present, the most commonly used desulfurization method is wet desulfurization, because the desulfurization efficiency of wet desulfurization is high, but the wet desulfurization system also has shortcomings, such as large water consumption. SUMMARY OF THE INVE...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/80B01D53/75B01D53/56B01D53/78
CPCB01D53/502B01D53/504B01D53/56B01D53/75B01D53/78B01D2258/0283
Inventor 吕晓宁
Owner 杭州宁骏科技有限公司
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