Double-flow-direction active coke adsorption type desulfurization and denitration device

Abstract

The invention relates to a double-flow-direction active coke adsorption type desulfurization and denitration device. The device comprises an adsorption tower, adsorption outer cylinders, adsorption inner cylinders, a middle isolation plate and a lower isolation plate, wherein a plurality of vertically arranged adsorption outer cylinders with holes are arranged in the adsorption tower; the adsorption inner cylinders with holes are arranged in the adsorption outer cylinders; the middle part of the adsorption tower is provided with the middle isolation plate with holes; the middle isolation plateis fixedly connected with the adsorption outer cylinder; the adsorption tower is sequentially divided into an upper air chamber and a lower air chamber from top to bottom; the upper air chamber of the adsorption tower is connected with a flue gas inlet; and the lower air chamber of the adsorption tower is connected with a flue gas outlet. The two air chambers are communicated only through the adsorption cylinders, so that the double purification of the flue gas from outside to inside and from inside to outside can be realized, and the utilization rate of the device is effectively improved. The device is positioned behind equipment such as a boiler, a sintering machine and the like, and is positioned in front of or behind a bag-type dust remover or an electrostatic dust remover, can be used for a dry desulfurization and denitration process, is suitable for a wet desulfurization and denitration process, and is an independent process of flue gas desulfurization and denitration treatment.

Description

technical field [0001] The invention relates to the field of flue gas treatment by activated coke, in particular to a double-flow active coke adsorption type desulfurization and denitrification device. Background technique [0002] As a new type of adsorption material, activated coke has many advantages compared with activated carbon, such as better pore structure, more types of surface groups, more stable chemical properties, better thermal stability, etc. Activated coke also has load capacity And reducing performance, not only can be used as a highly dispersed catalytic system, but also can be used as a reducing agent. [0003] The types of activated coke flue gas purification devices are generally divided into cross flow type and convection type, both of which have certain problems. The problem with the cross-flow type is that the active coke at the upper end is fresh active coke, while the active coke at the lower end is close to adsorption saturation, resulting in low ...

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Problems solved by technology

The problem with the cross-flow type is that the active coke at the upper end is fresh active coke, while the active coke type at the lower end is close to adsorption saturation, resulting in low pollutant removal efficiency at the lower end, which affects the overall purification efficiency

[0004] Patent CN 101810981 discloses a high-efficiency and low-resistance cross-flow moving bed desulfurization tower, which is a cross-flow moving bed adsorption device. The disadvantages are that the adsorption capacity of active coke is not fully utilized, and the circulation volume and wear of active coke are large. , high operating cost

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