Heat energy recovery treatment device for coal desulfurization

Abstract

The invention relates to the technical field of coal desulfurization, and discloses a heat energy recovery treatment device for coal desulfurization. The device comprises a plurality of heat exchangemechanisms with the same structure, every heat exchange mechanism comprises a shell, a heat exchange cavity is formed in the shell, a first air inlet pipe extending out of the upper portion of the shell is arranged in the heat exchange cavity, an air outlet is formed at the lower portion of the first air inlet pipe, a spiral second air inlet pipe is sleeved on the outer side surface of the first air inlet pipe and located in the heat exchange cavity, and two ends of the second air inlet pipe extend out of the top end and the bottom end of the shell; an attachment mechanism sleeved on the outerside of the second air inlet pipe is sleeved in the heat exchange cavity, and an air outlet pipe is arranged above the heat exchange cavity; and an air outlet pipe between the adjacent heat exchangemechanisms is connected with the first air inlet pipe through a first connecting pipe, and the second air inlet pipe located below the shell is connected with the second air inlet pipe located above the adjacent shell through a second connecting pipe. The heat energy recovery treatment device can recover heat energy of high-temperature elemental sulfur steam by adopting the above structure.

Description

technical field [0001] The invention relates to the technical field of coal desulfurization, in particular to a thermal energy recovery processing device in coal desulfurization. Background technique [0002] my country is rich in coal resources, and the average sulfur content in coal is 1.72%. Among them, the proven reserves of high-sulfur coal (S content ≥ 2.0%, including high-sulfur coal and medium-sulfur coal) account for about 1 / 3 of the total coal reserves, accounting for 1 / 3 of the raw coal production. 16.67%, which has great potential application value. [0003] There are huge sulfur resources in high-sulfur coal. In 2016, my country's raw coal output totaled 33.64 tons. If the S content in coal was 2.0%, the S content contained in high-sulfur coal was 11.21 million tons; in 2016, my country's sulfur production was only 5.16 million tons, 11.961 million tons of imported sulfur, more than 50% of foreign dependence, and my country's current use of high-sulfur coal and s...

AI Technical Summary

Problems solved by technology

Although the system and method can remove and recover sulfur in coal at the same time, and are suitable for desulfurization and sulfur recovery of high-sulfur coal in various coal types, the heat energy of the high-temperature elemental sulfur vapor generated by the elemental reaction unit has not been recovered. use, there is a defect of heat waste

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