Smoke desulfuration and denitration system absorbed by dielectric barrier discharge combined lye and process thereof

A technology of dielectric barrier discharge, desulfurization and denitrification, which is applied in the field of flue gas desulfurization and denitrification systems, can solve the problems of high equipment cost, large device footprint, and high operating costs, simplify equipment and technological processes, achieve green recycling, reduce The effect of equipment footprint

Inactive Publication Date: 2011-09-14
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] (1) The system is complex and requires a large amount of operation and maintenance;
[0008] (2) The consumption of water is large, and there are problems in the treatment of waste water;
[0009] (3) The system investment is large, the operating cost is high, a...

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  • Smoke desulfuration and denitration system absorbed by dielectric barrier discharge combined lye and process thereof
  • Smoke desulfuration and denitration system absorbed by dielectric barrier discharge combined lye and process thereof
  • Smoke desulfuration and denitration system absorbed by dielectric barrier discharge combined lye and process thereof

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Embodiment Construction

[0034] The present invention provides a flue gas desulfurization and denitrification system and process with dielectric barrier discharge combined with alkali absorption. The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0035] Such as figure 1 As shown, the composition of the system is as follows: one end of the dielectric barrier discharge reactor 1 is the flue gas inlet, and the other end is connected to the gas-gas heater 2 original flue gas side inlet; the gas-gas heater 2 is the original flue gas side outlet Connect with the flue gas inlet of lye absorption tower 3 bottoms by pipeline; The liquid outlet of 4 is communicated with described spray device through pipeline and peristaltic pump; Gas outlet is arranged on the top of lye absorption tower 3, is connected with gas-gas heater 2 clean flue gas side inlets by pipeline, gas-gas heater 2. The side outlet of the net flue gas is con...

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Abstract

The invention belongs to the technical field of fire power plant smoke processing, and in particular relates to a smoke desulfuration and denitration system absorbed by dielectric barrier discharge combined lye and a process thereof. The smoke after boiler combustion enters a dielectric barrier discharge reactor; the SO2 and NOx in the smoke is catalyzed and oxidized by strong oxidant free radical produced from discharging so as to produce high valence nitric oxide, SO3 and some H2SO4 and HNO3, and the like; and the processed smoke enters a lye absorption tower for rinsing the smoke through the lye so as to achieve the purpose of removing nitric oxide and sulfur oxide. The process has better removing efficiency and has higher economical benefit compared with the desulfuration and denitration process applied in the current electric power plant; and the nitrate, nitrite and sulfate are recovered as products so as to achieve the green recovery and utilization of pollutant.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment in thermal power plants, and in particular relates to a flue gas desulfurization and denitrification system and process using dielectric barrier discharge combined with lye absorption. Background technique [0002] SO in flue gas of thermal power plant 2 and NO X It is the main gas pollutant in the atmosphere. It not only brings various hazards to the human body, but also has a great impact on the growth of animals and plants, as well as on the weather and climate, so measures must be taken to control it. An excellent flue gas purification technology not only needs to meet the high-efficiency removal rate, but also considers the technical economy and the simple operability of the system. At present, many researchers agree that SO 2 and NO X integrated removal. [0003] At present, thermal power plants generally use two sets of devices to desulfurize and denitrify the flue gas. The f...

Claims

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Application Information

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IPC IPC(8): B01D53/76B01D53/78B01D53/60
CPCY02A50/20
Inventor 肖海平杜旭
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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