Electrostatic cooperative pollutant removing method and device

A technology of pollutants and electrostatic precipitators, which is applied in the field of electrostatic collaborative pollutant removal methods and devices, can solve the problems of single removal equipment capacity, small investment and operation costs, and small floor space, and achieve compact structure and low operating costs. Low cost and low equipment investment

Active Publication Date: 2013-12-25
SHANDONG UNIV +1
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Problems solved by technology

[0003] In order to solve the deficiencies of the existing technology, the present invention discloses a method and device for electrostatic cooperative pollutant removal. The present invention combines low-temperature plasma treatment technology, chemical absorption / adsorption and high-efficiency electric dust removal technology to remove pollutants from power plants. It solves the shortcomings of the single capacity of traditional pollutant removal equipment, and has the characteristics of small footprint and low investment and operation costs.

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  • Electrostatic cooperative pollutant removing method and device

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Embodiment Construction

[0032] The present invention is described in detail below in conjunction with accompanying drawing:

[0033] Such as figure 1 Shown, a kind of electrostatic cooperative pollutant removal method comprises the following steps:

[0034] Step 1: transport the flue gas to the electrostatic precipitator 2 for pre-dust removal, and remove more than 90% of the particulate matter in the flue gas;

[0035] Step 2: The low-temperature plasma generation system generates low-temperature plasma to oxidize and degrade the pollutants in the flue gas after pre-dust removal;

[0036] Step 3: Absorb or absorb the flue gas treated in Step 2 by means of calcium oxide powder injection;

[0037] Step 4: Transport the flue gas treated in Step 3 and the used calcium oxide powder to the electrostatic precipitator 8 powered by high-frequency pulse power.

[0038] In the first step, the electrostatic precipitator 2 is a conventional DC electrostatic precipitator with two electric fields or three elect...

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Abstract

The invention discloses an electrostatic cooperative pollutant removing method and device. The method comprises the following steps: firstly, conveying exhaust gas to an electrostatic dust collector for dust removal in advance, thus removing more than 90% of particles in the exhaust gas; secondly, generating low-temperature plasmas by a low-temperature plasma generating system, oxidizing and degrading pollutants in the exhaust gas subjected to dust removal in advance; thirdly, sucking or adsorbing the exhaust gas processed in the second step with a calcium oxide powder spraying method; fourthly, conveying the exhaust gas processed in the third step and used calcium oxide powder to a high-frequency impulse power supply electrostatic dust collector. The device is simple in system, compact in structure, high in pollutant removal efficiency, little in equipment investment, small in occupied space and low in operating cost.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an electrostatic cooperative pollutant removal method and device. Background technique [0002] Coal-fired power plants are important stationary sources of pollution, with a wide variety of pollutants, complex removal systems, large footprints, and high costs. Existing power plants are generally equipped with dust removal, desulfurization, and denitrification devices, and lack effective removal methods for mercury, sulfur trioxide, hydrogen fluoride, hydrogen chloride, and organic gas pollutants. The method of synergistic removal of multiple pollutants is an effective and economical means to solve the pollution of coal-fired power plants. Studies have found that low-temperature plasma has the characteristics of high activity and strong oxidation, which can effectively remove gaseous pollutants in coal-burning flue gas and degrade organic gas pollutants. The oxid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/32B01D53/14B01D53/06B03C3/017
Inventor 马春元王鹏崔琳董勇高秀丽马洪良
Owner SHANDONG UNIV
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