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Flue-gas treatment device

A technology of flue gas treatment and flue gas, which is applied in the direction of gas treatment, dispersed particle separation, membrane technology, etc., can solve the problems of poor flue gas denitrification effect, high nitrogen oxide content, and failure to meet national standards, etc., and achieve desulfurization and denitrification effects Good, good effect, the effect of improving grinding efficiency

Pending Publication Date: 2018-03-30
山东义丰环保机械股份有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

In the technical solution disclosed in the above documents, the removal of nitrogen oxides in the flue gas needs to ensure that the temperature of the flue gas is above 200°C, and the required removal effect of nitrogen oxides has been achieved. Since the flue gas needs to be desulfurized before denitrification, after desulfurization The temperature of the flue gas is usually difficult to maintain above 200°C, which leads to poor denitrification effect of the flue gas, and the content of nitrogen oxides in the flue gas after treatment is high, which cannot meet the national standard

Method used

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Examples

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Effect test

Embodiment 1

[0042] Such as figure 1 As shown: the flue gas treatment device also includes a dust collector 2, the intake end of the dust collector 2 is connected with the smoke outlet of the boiler 1, and the flue gas of the boiler 1 first enters the dust collector 2 to remove dust and then enters the main flue 14 , so as to prevent the smoke from affecting the mixing of the sodium bicarbonate powder and the flue gas, and also prevent the smoke from affecting the reaction of the sodium bicarbonate powder and the sulfur oxides and nitrogen oxides in the flue gas. The dust collector 2 can be a bag dust collector, an electric dust collector or a tubular dust collector, etc.

[0043] The gas outlet end of the dust collector 2 is communicated with the intake end of the main flue 14 through the flue gas input channel 15, and the output end of the main flue 14 is connected with the dust removal module. In the present embodiment, the dust removal module is a washing tower 13, and the main flue T...

Embodiment 2

[0084] Such as Figure 6~7 Shown: the difference between embodiment 2 and embodiment 1 is: the grinding device is arranged between the powder delivery pipe 39 and the grinding device smoke outlet pipe 42, and the transportation of sodium bicarbonate powder is realized by means of negative pressure transportation. The smoke inlet pipe 38 of the grinding device is arranged at intervals on the lower side of the powder conveying pipe 39, and a balance pipe 37 is arranged between the smoke inlet pipe 38 of the grinding device and the powder conveying pipe 39, and the balance pipe 37 is vertically arranged, and the balance pipe 37 The upper end communicates with the middle part of the powder conveying pipe 39, and the lower end of the balance pipe 37 communicates with the smoke inlet pipe 38 of the grinding device, so that the pressure of the smoke inlet pipe 38 of the grinding device and the powder conveying pipe 39 can be balanced to ensure that the flue gas and sodium bicarbonate ...

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Abstract

The invention provides a flue-gas treatment device, and belongs to the technical field of environmentally friendly equipment. The flue-gas treatment device is characterized by comprising a main flue (14), a sodium bicarbonate grinding device (7), a powder preheating module (6) and a dust removal module, wherein a gas inlet end of the main flue (14) is used for feeding to-be-treated flue gas; a gasoutlet end of the main flue (14) communicates with a gas inlet end of the dust removal module; a gas inlet end of the sodium bicarbonate grinding device (7) communicates with the gas inlet end of themain flue (14); a gas outlet end of the sodium bicarbonate grinding device (7) communicates with the main flue (14); the powder preheating module (6) is arranged between the sodium bicarbonate grinding device (7) and the main flue (14); and the dust removal module is a wet-process desulfurization tower or washing tower (13). Sodium bicarbonate powder and flue gas are reacted fully by the flue-gastreatment device, energy consumption of the powder preheating module is reduced, the desulfurization and denitration effect is good, and low-temperature flue gas can be directly treated.

Description

technical field [0001] A flue gas treatment device belongs to the technical field of environmental protection equipment. Background technique [0002] Modern environmental science warns us that atmospheric environmental resources are not endless, just like water resources and mineral resources, it is a wealth shared by human beings and must be protected from generation to generation, highly cherished and rationally utilized. Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, The pollution of flue gas to the environment is the compound pollution of various poisons. At present, the treatment of flue gas generally includes three parts: dust removal, desulfuriza...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/60
CPCB01D53/60B01D53/83B01D2258/0283
Inventor 魏向海车秀花赵肖飞刘延钊
Owner 山东义丰环保机械股份有限公司
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