Dry-type multi-channel gas purification tower and working method thereof

Abstract

The invention relates to a dry-type multi-channel gas purification tower and a working method thereof. The purification tower comprises a tower body, a gas inlet pipe and a plurality of groups of purifying agent columns, the purifying agent column is mounted in the tower body and comprises a central pipe, an upper-layer purifying agent ring and a lower-layer purifying agent ring, an air inlet space is reserved between the upper-layer purifying agent ring and the corresponding lower-layer purifying agent ring, a coal gas inlet is formed in the bottom of the tower body, a coal gas inlet pipe extends into the bottom of the tower body from the coal gas inlet and is communicated with the bottoms of the central pipes of the purifying agent columns through corresponding coal gas branch pipes, a plurality of coal gas distribution openings are formed in the pipe walls, corresponding to the gas inlet space, of the central pipes in the circumferential direction, a coal gas outlet is formed in thecenter of the top of the tower body, a purifying agent column mounting hole is formed in the top of the tower body and right above each group of purifying agent columns, a plurality of purifying agent columns are adopted to form a plurality of coal gas channels in the purifying tower, coal gas is directly purified through the purifying agent layers in the upper-layer purifying agent ring and thelower-layer purifying agent ring, the coal gas channels are short, the pressure is reduced, and the purifying agent columns are convenient to assemble, disassemble and replace.

Description

technical field [0001] The invention relates to the technical field of gas purification, in particular to a dry multi-channel gas purification tower and a working method thereof. Background technique [0002] After preliminary purification of coke oven gas, it still contains a small amount of H 2 S gas, in some occasions where the content of sulfur and other impurities in the gas is strictly controlled, it is necessary to carry out fine desulfurization of the gas to further remove a small amount of H contained in the gas 2 S gas. [0003] Most of the existing coal gas fine desulfurization equipment is a dry packed tower, which uses iron or zinc oxidants, activated carbon, and microcrystalline materials as purifying agents. After the gas passes through the packing layer, the remaining H is removed. 2 S gas, as well as impurities such as hydrogen cyanide, nitrogen oxides and tar mist, are purified. In order to facilitate regular replacement, the decontamination agent is oft...

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Problems solved by technology

[0004] With the development of large-scale gas purification equipment, the sealing surface between the purification agent baskets is long, the gas sealing is difficult, and short-circuit phenomenon may occur; in addition, due to the limitation of its own rigidity, it is also very difficult to lift and unload large-diameter purification agent baskets

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