Double-alkali flue gas desulfurization oxidation tank

A technology of oxidation pond and double-alkali method, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, etc. It can solve the difficulties in the oxidation process of double-alkali desulfurization process, uneven distribution of oxidizing air, and insufficient oxidation efficiency of gypsum, etc. problems, to achieve the effect of ensuring long-term stable operation, improving oxidation efficiency, and increasing the gas-liquid contact area

Inactive Publication Date: 2012-07-18
COAL IND JINAN DESIGN & RES
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Problems solved by technology

[0002] At present, the desulfurization process of small and medium-sized coal-fired power plants in my country is constantly developing. The double-alkali desulfurization process occupies a large proportion in the market due to its advantages of high desulfurization efficiency and low investment cost. However, the oxidation link in the double-alkali desulfurization process There have been some insurmountable problems
[0003] The oxidation aeration of the tr

Method used

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  • Double-alkali flue gas desulfurization oxidation tank
  • Double-alkali flue gas desulfurization oxidation tank

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Embodiment Construction

[0016] Accompanying drawing is a kind of specific embodiment of the present invention. This embodiment includes an aeration zone 1 and a settling zone 2 arranged up and down. An oxidation air main pipe 3 and several evenly distributed primary branch pipes 4 connected thereto are arranged above the liquid level of the oxidation tank. The primary branch pipe 4 is connected with The secondary branch pipes 5 evenly distributed in the aeration area 1, the secondary branch pipes 5 are connected by flanges 6, the end of the secondary branch pipes 5 is equipped with an aerator 7, the aerator 7 is a porous pipe with cross openings, and the upper part A reflector 8 is installed, and a straight blade agitator 9 is installed in the sedimentation area 2; a valve 10 is arranged between the oxidation air main pipe 3 and the first-level branch pipe 4; the front pipe of the second-level branch pipe 5 flange 6 It is a carbon steel pipe, and the pipeline behind the flange 6 is a stainless steel ...

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Abstract

The invention relates to the field of flue gas desulfurization equipment for medium and small coal-fired boilers, and in particular discloses a double-alkali flue gas desulfurization oxidation tank. The double-alkali flue gas desulfurization oxidation tank comprises an aeration region and a settling region which are arranged vertically. The oxidation tank is characterized in that: an oxidation air main pipe and a plurality of primary branched pipes which are uniformly distributed and communicated with the oxidation air main pipe are arranged above the liquid level of the oxidation tank, the primary branched pipes are connected with secondary branched pipes which are uniformly distributed in the aeration region, the secondary branched pipes are connected through flanges, an aerator is arranged at the tail end of each secondary branched pipe, each aerator is a cross porous pipe, a reflecting plate is arranged on the upper part of each aerator, and a flat straight oar type stirrer is arranged in the settling region. The oxidation tank is unique in structure; and through the oxidation tank, air is distributed uniformly, the gas-liquid contact area is enlarged, and the oxidation efficiency is remarkably improved.

Description

(1) Technical field [0001] The invention relates to the field of flue gas desulfurization equipment for small and medium-sized coal-fired boilers, in particular to a double-alkali flue gas desulfurization oxidation tank. (2) Background technology [0002] At present, the desulfurization process of small and medium-sized coal-fired power plants in my country is constantly developing. The double-alkali desulfurization process occupies a large proportion in the market due to its advantages of high desulfurization efficiency and low investment cost. However, the oxidation link in the double-alkali desulfurization process There have always been some insurmountable problems. [0003] The oxidation aeration of the traditional double-alkali method adopts the method of opening holes in the bottom of the tank. This method is extremely prone to blockage and difficult to maintain, resulting in uneven distribution of oxidized air and poor oxidation effect. The follow-up research of l...

Claims

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Application Information

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IPC IPC(8): B01D53/50B01D53/78
Inventor 陆阳马继德张新蔡琦杨恒凯陈公卫葛清鹏姜波郝培龙王继兰朱杰
Owner COAL IND JINAN DESIGN & RES
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