Polyethyleneglycol dimethyl ether desulfurizing system optimization extracting and concentrating technology

A desulfurization system and process technology, applied in the direction of hydrogen sulfide, chemical instruments and methods, and separation of dispersed particles, can solve the problems of high heat consumption of regeneration tower, air pollution, low desulfurization rate of flash evaporation process, etc., and reduce flash pressure , increase the content of hydrogen sulfide, and effectively use the effect of flash space
CN101077467AInactive Publication Date: 2007-11-28YANKUANG LUNAN CHEM FERTILIZER PLANT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANKUANG LUNAN CHEM FERTILIZER PLANT
Publication Date
2007-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses optimized concentration process of NHD desulfurization system, and has the advantages of environment friendship, high S recovering rate, reuse of recovered material, etc. The optimized concentration process includes: 1. feeding the rich NHD solution with absorbed hydrogen sulfide to the flash tank I; 2. connecting the flash tank I to the flashed gas pipeline in the gas phase outlet side of the flash tank II; 3. heating the rich solution from the flash tank II to 90-130 deg.c in a heat exchanger and high temperature decompression regenerating the rich solution in a low pressure flash tank at pressure lower than 30 KPa; 4. water cooling and separating flash gas from the low pressure flash tank, pressurizing to 50-150 KPa, mixing with flash gas from the flash tank II, pressurizing the gas mixture in desulfurizing flash machine, and returning to the concentrating tower system; and 5. regenerating the rich solution from the low pressure flash tank in a regenerating tower.
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Description

technical field

[0001] The invention relates to a new process for optimizing and concentrating polyethylene glycol dimethyl ether (NHD) desulfurization system, in particular to a process for making H in regeneration gas 2 The NHD desulfurization system with an S concentration of ≥50% optimizes the enrichment process. Background technique

[0002] Coal is the main energy source in our country. With the continuous research and in-depth development of coal gasification technology at home and abroad in recent years, especially the rising price of anthracite, the traditional fixed seam coal gas production has been replaced by advanced high-efficiency gasification technology that adapts to the diversity of coal types. The use of high-sulfur coal as a raw material has become the development direction of coal chemical industry.

[0003] At the same time, NHD desulfurization and decarbonization technology has high sulfur capacity, simple process, and low energy consumption. H in mi...

Claims

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