Novel ammonium hydroxide mixer for boiler denitration

A mixer and ammonia water technology, applied in the direction of fluid mixers, mixers, chemical instruments and methods, etc., can solve the problems of discontinuous ammonia water injection, ammonia water mixer does not have ammonia water concentration, etc., and achieve high practical value and practicability High, simple installation and construction effect

Active Publication Date: 2016-01-06
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention is proposed based on the experience and problems of many engineering projects, and is dedicated to solving the problem that the ammonia water mixer does not have the function of adjusting the ammonia water concentration to adapt to variable loads in the prior art system that uses ammonia water as a reducing agent for denitrification, and the ammonia water mixer The problem of mutual topping of pressure and discontinuous injection of ammonia water

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  • Novel ammonium hydroxide mixer for boiler denitration
  • Novel ammonium hydroxide mixer for boiler denitration
  • Novel ammonium hydroxide mixer for boiler denitration

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0037] Such as Figure 1~3 As shown, the present invention mainly includes a mixer tank, an ammonia pump 1, a desalinated water pump 2, a flow meter (k1~k7), an electric valve, an ammonia water spray gun (A1, A3, B2, B4), a desalted water spray gun (A2, A4, B1, B4), electromagnetic switch 6 and related pipelines of ammonia water and desalinated water.

[0038] figure 1 It is a schematic diagr...

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Abstract

The invention discloses a novel ammonium hydroxide mixer for boiler denitration, which is designed by adopting a tangent circle concept, a certain quantity of spray guns are arranged on a mixer tank according to related indexes of the size of the boiler, original discharge of nitric oxides and local environment requirements, the spray guns are mounted according to certain angles, and high concentration ammonium hydroxide and desalting water pass by the spray guns at intervals on the same floor. The high concentration ammonium hydroxide and desalting water have certain pressure and speed under respective pumping actions, a specific tangent circle is formed in the mixed tank body, and the tangent circle direction of an adjacent layer is opposite, so that a well mixing effect is achieved and the problem of pressure offset is eliminated. In addition, the spray guns of the mixer are provided with switches, and the variable load denitration adjustment of a boiler can be realized by symmetrically closing partial spray guns of the mixer at intervals. The novel ammonium hydroxide mixer is good in effect, low in equipment manufacturing cost, convenient to mount and use, and solves the problem of the pressure offset of the high concentration ammonium hydroxide and the desalting water in the mixer and the problem of incapability of adaption to the denitration under the variable load condition of the boiler.

Description

technical field [0001] The invention belongs to the field of denitrification of coal-fired boilers, and relates to a denitrification device using ammonia water as a reducing agent, in particular to equipment for adjusting the mixed concentration of ammonia and water. Background technique [0002] my country is rich in coal resources, and coal occupies a large share in China's energy structure. According to relevant reports, in 2010, my country's thermal power generation accounted for about 75% of the total power generation, hydropower accounted for about 22%, nuclear power accounted for 1.5%, wind power and solar energy accounted for about 1.5%, and coal-fired units accounted for 90% of the total thermal power generation. about. The consequence of a large amount of coal-fired power generation is high pollution, such as the current smog, acid rain, and the hole in the ozone layer. The emergence of these problems has a lot to do with coal-fired power generation. The governme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F5/20
Inventor 罗小鹏姚斌石践陈玉忠马帅郭少博黄锡兵杨东林刘大猛周科
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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