System and method for dehumidifying dedusting desulfurization and dechloridation purification quality improving of coal gas after dry dedusting top pressure recovery turbine (TRT)

Abstract

The invention discloses a system and method for dehumidifying dedusting desulfurization and dechloridation purification quality improving of coal gas after dry dedusting top pressure recovery turbine(TRT). The system comprises a washing tower system and an adsorption bed, wherein the washing tower system comprises a washing tower and a cooler, a spraying layer is arranged on the upper part in thewashing tower, a spraying pool is arranged on the lower part in the washing tower, the spraying layer is internally provided with two or more sets of spraying structures, namely, the first set of spraying structure and the second set of spraying structure, the first set of spraying structure is located on the upstream part of the second set of spraying structure, the first set of spraying structure is connected with the spraying pool through a first pump, and the second set of spraying structure is connected with the spraying pool through a cooler and a second pump; the adsorption bed is internally provided with one or more adsorption units in the flowing direction of coal gas, two columns of inclined baffles are arranged at a coal gas inlet and a coal gas outlet of each adsorption unit correspondingly, the inclined direction of each column of inclined baffles is the same, and thus the coal gas inlets or the coal gas outlets are partitioned into a plurality of inclined channels; and the inclined directions of the every two adjacent columns of inclined baffles are in mirror symmetry.

Description

technical field [0001] The invention belongs to the field of metallurgical energy, and in particular relates to a system and method for gas analysis, wet dedusting, desulfurization and chlorine purification and upgrading after dry dedusting TRT. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Improving the utilization rate of gas in ironmaking work, strengthening resource recycling, and reducing fuel ratios are currently one of the main energy-saving and emission-reduction methods in the ironmaking industry. TRT residual pressure power generation technology uses the pressure energy and heat energy of blast furnace top gas to make the gas do work and convert it into mechan...

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Problems solved by technology

[0005] In view of the technical problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a system and method for gas analysis, wet dedusting, desulfurization and chlorine purification and upgrading after dry dedusting TRT to solve the problems that are difficult to overcome in the existing dry dedusting TRT technology. Subsequent equipment corrosion problems caused by wet gas analysis and wet acid analysis can increase the calorific value of the gas, increase the combustion temperature, and then reduce the coke ratio, which is conducive to energy saving and emission reduction in the metallurgical iron and steel industry

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