Device and method for removing SO3 in coal-fired boiler flue gas by using white mud and red mud

A technology for coal-fired boilers and red mud, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of high cost and many alkaline materials, and achieve the effects of avoiding corrosion, convenient operation, and reducing costs

Pending Publication Date: 2020-02-28
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a method for removing SO from coal-fired boiler flue gas by utilizi

Method used

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  • Device and method for removing SO3 in coal-fired boiler flue gas by using white mud and red mud
  • Device and method for removing SO3 in coal-fired boiler flue gas by using white mud and red mud
  • Device and method for removing SO3 in coal-fired boiler flue gas by using white mud and red mud

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0021] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

[0022] refer to Figure 1 to Figure 3 It can be seen that the ...

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Abstract

The invention discloses a device for removing SO3 in coal-fired boiler flue gas by using white mud and red mud. The device comprises a crusher, wherein the material outlet of the crusher is fixedly connected with an elevator, the material outlet in the top end of the elevator is fixedly connected with the material inlet of a material bin through a pipeline I, the material outlet in the bottom endof the material bin is fixedly connected with the material inlet of a spiral feeder through a pipeline II, the material outlet of the spiral feeder is fixedly connected with the material inlet of a ball mill through a pipeline III, the material outlet of the ball mill is fixedly connected with the material inlet of a grading machine through a pipeline IV, the bottom end of the grading machine is fixedly connected with the material inlet of a spiral returning machine through a pipeline V, and the material outlet of the spiral returning machine is fixedly connected with the material inlet of theball mill through a pipeline VI. According to the invention, the device is scientific and reasonable in structure, cam prepare superfine powder from white mud and red mud, can make white mud fine powder and red mud fine powder fully react with SO3 in flue gas, has good removal effect on SO3 in flue gas, can turn waste white mud and red mud into wealth, substantially reduce the flue gas SO3 removal cost of a coal-fired boiler, and is suitable for application and popularization.

Description

technical field [0001] The invention relates to the removal of SO from coal-fired boiler flue gas 3 The device specifically relates to a method of removing SO from coal-fired boiler flue gas by using white mud and red mud. 3 s installation. Background technique [0002] Power plant coal-fired boiler flue gas contains SO 3 , needs to be removed. At present, the SO in the flue gas of coal-fired boilers 3 The cost of removal is higher, mainly because more alkaline materials are consumed. White mud is the solid waste produced in the alkali recovery process of pulp and paper enterprises, and its main component is CaCO 3 , At present, most of the white mud produced by my country's pulp and paper making enterprises is disposed of in landfills. On the one hand, it occupies land resources, and on the other hand, the cost of landfill disposal is relatively high; red mud is the pollution discharged when the aluminum industry extracts alumina Generally, every ton of alumina produced...

Claims

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Application Information

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IPC IPC(8): B01D53/83B01D53/50B01D53/86B01D53/56B02C17/10B02C17/18B02C23/02
CPCB01D53/83B01D53/50B01D53/8625B02C17/10B02C17/183B01D2258/0283
Inventor 孙漪清陈锋刘秀如薛方明苏靖程
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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