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Large double-cycle fluidized bed semi-dry process flue gas desulphurization tower

A dual-circulation, fluidized bed technology, applied to chemical instruments and methods, separation methods, and separation of dispersed particles, can solve the problems of increasing the resistance and energy consumption of the desulfurization system, and the small capacity of the boiler unit, so as to reduce investment and operation and maintenance The effect of cost, simplification of tower structure and process flow, and reduction of investment

Active Publication Date: 2011-02-09
WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL +1
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Problems solved by technology

However, this method also does not solve the shortcomings of the existing circulating fluidized bed desulfurization tower applicable to the boiler unit capacity is small
In addition, due to the addition of the counter jet generator, the resistance and energy consumption of the desulfurization system are correspondingly increased

Method used

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  • Large double-cycle fluidized bed semi-dry process flue gas desulphurization tower
  • Large double-cycle fluidized bed semi-dry process flue gas desulphurization tower
  • Large double-cycle fluidized bed semi-dry process flue gas desulphurization tower

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Embodiment Construction

[0013] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0014] The large-scale double-circulating fluidized bed semi-dry flue gas desulfurization tower shown in the figure has an integral reaction tower body 12, and the reaction tower body 12 is provided with ash storage bin 2 at the bottom of the tower and a flue gas mixing chamber from bottom to top. Chamber 4, Venturi tube fluidization section 5, gradual expansion section 6, intermediate reaction section 9, tower top transition section 10 and tower top section 11. Among them: the ash storage bin 2 at the bottom of the tower, the flue gas mixing chamber 4, the fluidized section 5 of the Venturi tube, the expanding section 6 and the intermediate reaction section 9 are all divided into two independent chambers by a middle partition 23 . On the sides of the two independent chambers of the flue gas mixing chamber 4, flue gas inlets 3 are respectively a...

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Abstract

The invention provides a large dual-circulation fluidized bed semi-dry fume desulfurization tower, comprising a reaction tower body; a tower bottom ash storage bin, a fume mixed chamber, a Venturi tube fluidized section, a diverging section, a middle reaction section, a tower top transition section and a tower top section are sequentially arranged on the reaction tower body from bottom to top; the tower bottom ash storage bin, the fume mixed chamber, the Venturi tube fluidized section, the diverging section and the middle reaction section are respectively divided into two independent chambersby a middle clapboard; the side surfaces of two independent chambers of the fume mixed chamber are respectively provided with a fume inlet; the upper parts of the two independent chambers of the Venturi tube fluidized section are respectively provided with a desulfurizer grain inlet; the side surfaces of the two independent chambers of the diverging section are respectively provided with a circulation material inlet; the lower parts of the two independent chambers of the middle reaction sections are respectively provided with an atomized water nozzle; the tower top transition section and the tower top section are integrated into an independent chamber; and the side surface of the tower top section is provided with a fume outlet. The large dual-circulation fluidized bed semi-dry fume desulfurization tower has small land occupied area, less engineering investment and high desulfurization efficiency; and the capability of the applicable coal-fired boiler unit can be increased by times.

Description

technical field [0001] The invention relates to flue gas desulfurization equipment used for coal-fired power station boilers, in particular to a large double-circulation fluidized bed semi-dry flue gas desulfurization tower. Background technique [0002] There are generally three types of technologies for flue gas desulfurization of coal-fired power plant boilers: wet method, semi-dry method and dry method. Circulating fluidized bed flue gas desulfurization technology is a semi-dry flue gas desulfurization technology developed in the 1980s. This technology is based on the principle of circulating fluidized bed. Recirculation, so that sulfur dioxide SO in the flue gas 2 , sulfur trioxide SO 3 , Hydrogen chloride HCl and hydrogen fluoride HF and other gases are in full contact with the desulfurization agent, thereby greatly improving the utilization rate of the desulfurization agent. At present, the widely used circulating fluidized bed flue gas desulfurization equipment ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/83B01D53/50
Inventor 韩旭余福胜李雄浩徐尹生徐志安江海
Owner WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL
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