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Catalyst unified plasma nitric oxide removing device and method

A technology of plasma and nitrogen oxides, which is applied in the field of flue gas denitrification, can solve the problems of not being widely used, dust accumulation in the air preheater, and large amount of operation and maintenance, and achieves stable operation, small footprint, and economical High benefit effect

Inactive Publication Date: 2016-04-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0006] However, the main disadvantages of SCR technology are: (1) The operating temperature is limited and cannot be widely used; (2) The system is complex and requires a lot of operation and maintenance; (3) It is easy to cause dust accumulation and blockage of the air preheater

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  • Catalyst unified plasma nitric oxide removing device and method
  • Catalyst unified plasma nitric oxide removing device and method
  • Catalyst unified plasma nitric oxide removing device and method

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0032] In order to realize the efficient removal of nitrogen oxides, the present invention provides a novel flue gas denitrification method, the process flow is as follows figure 1 As shown, after the combustion flue gas is mixed with the reducing gas ammonia, it is passed into the reactor 1 from the lower part, Figure 2-3 It is a structural cross-sectional view of a double dielectric barrier discharge reactor. The reactor 1 is a double dielectric layer formed by an outer dielectric pipe 13 and an inner dielectric pipe 14. The axes of the outer dielectric pipe 13 and the inner dielectric pipe 14 are on a straight line. Both are made of quartz material, the thicknesses are 1.5 mm and 1 mm respective...

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Abstract

The invention relates to a catalyst unified plasma nitric oxide removing device and method. Smoke and ammonia are mixed and then introduced to a gas inlet in the lower part of a reactor which is a dual-layer medium structure, a metal net layer wraps the outer side of an outer medium pipe as an external electrode, a metal internal electrode is arranged in an inner medium pipe and is connected with a power source anode, and the external electrode is connected with a power source cathode to form a plasma generator; in the middle of the reactor, a partition plate with air vents is arranged in a cavity between the outer medium pipe and the inner medium pipe and is added with a catalyst Fe-Cu / CNTs; the mixed gas is subjected to unified denitration by the combined action of the catalyst and the plasma, is introduced into an alkali solution cleaning device from a gas outlet in the upper part of the reactor, and is exhausted by a chimney after being cleaned and absorbed. Ethylene is mixed in the mixed gas to further improve a nitric oxide removing rate. The device can efficiently denitrify at high and low temperatures, has an NO removing rate more than 96%, small energy consumption and high economic benefits.

Description

technical field [0001] The invention belongs to the technical field of flue gas denitrification, and in particular relates to a device and method for removing nitrogen oxides with a catalyst combined with plasma. Background technique [0002] In today's world, the development of energy science and technology is a major worldwide issue. The characteristic of my country's energy is that coal occupies a dominant position in my country's energy structure. This situation has lasted for decades. The proportion has decreased, but the power generation energy has been dominated by coal for a long time, and its consumption accounts for about 70% of the total primary energy consumption, and this pattern will not change for a long time in the future. At present, coal is mainly used as energy in combustion. Nitrogen oxides NO in combustion flue gas X Seriously endanger the environment and human health. [0003] In recent years, the state is studying support policies to improve the tec...

Claims

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Application Information

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IPC IPC(8): B01D53/86B01J23/745B01D53/76B01D53/56
CPCB01D53/8625B01D53/32B01D53/56B01D53/76B01D2255/20738B01D2255/20761B01D2257/404B01D2258/0283B01J23/745
Inventor 汪涛孙保民方永旭吴礼宁原奇鑫
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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