Circulating fluidized bed dry desulfurization tower
A circulating fluidized bed and dry desulfurization technology, which is applied to chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of short residence time in the tower, poor desulfurization reaction effect, and large external circulation of materials, etc. Bed density, increasing desulfurization efficiency, and improving the effect of separation efficiency
Inactive Publication Date: 2020-02-04
JIANGSU KEHANG ENVIRONMENT ENG TECH
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Problems solved by technology
[0004] In order to solve the problems existing in the prior art that the desulfurization agent in the upper part of the reaction section of the desulfurization tower is dried so that the desulfurization reaction effect of the upper part is poor, the outlet structure of the desulfurization tower causes low separation efficiency, large external circulation of materials, and short residence time in the tower, the present invention provides a A circulating fluidized bed dry desulfurization tower
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[0024] Such as figure 1 As shown, a circulating fluidized bed dry desulfurization tower includes a desulfurization tower shell. The desulfurization tower shell is sequentially provided with an outlet section 1, a top protrusion section 2, a contraction section 3, and a reaction section 4 from top to bottom. , Cone section 6, venturi section 7 and inlet section 9, the outlet section 1 is arranged horizontally, the top surface of the top convex section 2 is higher than the outlet section 1, and the top surface of the top convex section 2 is away from the outlet The upper plane distance of section 1 is 20%-25% of the diameter of reaction section 4, the cross section of said top convex section 2 is square or round, and its equivalent diameter is 80%-95% of the diameter of reaction section 4;
[0025] The top and bottom ends of the contraction section 3 are both contracted toward the middle, the equivalent diameter of the smallest part of the contraction section 3 with the smallest fl...
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The invention belongs to the technical field of desulfurization environment-friendly equipment, and particularly relates to a circulating fluidized bed dry desulfurization tower. The tower comprises adesulfurization tower shell, and the desulfurization tower shell is provided with an outlet section, a top convex section, a shrinkage section, a reaction section, a cone section, a Venturi section and an inlet section sequentially arranged from the top to the bottom; and the top surface of the top convex section is higher than the outlet section, the top and bottom ends of the shrinkage sectionare contracted towards the middle, the middle of the reaction section is provided an opening, the upper part of the opening and the cone section are both provided with high-pressure reflux spray guns,the large opening of the cone section faces the reaction section, and the inlet section is provided with a flow guide plate. The tower has the following beneficial effects: the circulating fluidizedbed dry desulfurization tower provided by the invention solves the problems of low separation efficiency, large external circulation of materials, short residence time in the tower, a low bed layer density and a poor reaction effect in the upper part of the reaction section of a current desulfurization tower, and reduces operating costs of a draught fan.
Description
Technical field [0001] The invention belongs to the technical field of desulfurization environmental protection equipment, and in particular relates to a circulating fluidized bed dry desulfurization tower. Background technique [0002] With the increasingly stringent national environmental protection policies, flue gas treatment in various industries will also be upgraded and upgraded. The ultra-low emission transformation of the coal-burning industry has been completed one after another. Generally, the SO2 emission concentration is required to be less than 35mg / Nm3, but the metallurgical industry and building materials industry have not yet After the transformation is completed, due to certain differences in flue gas characteristics in different industries, the wet desulfurization process can be used, but it is not the most suitable desulfurization process. Wet desulfurization can be used for high-sulfur flue gas, but its energy consumption is high and operating costs are high....
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Login to View More IPC IPC(8): B01D53/83B01D53/96B01D53/50
CPCB01D53/508B01D53/83B01D53/96B01D2258/0283
Inventor 徐志海叶昊李森徐鑫荣张春英蔡卓安张勇
Owner JIANGSU KEHANG ENVIRONMENT ENG TECH