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Device and process for recycling and treating hydrogen sulfide-containing chemical acid waste gas

A technology for acidic waste gas and hydrogen sulfide, applied in sulfate preparations, incinerators, chemical instruments and methods, etc., to achieve the effect of heat recovery and waste gas treatment

Inactive Publication Date: 2015-01-21
义马煤业集团煤生化高科技工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of the existing hydrogen sulfide removal technology, the present invention proposes a recovery and treatment device and process for chemical acid waste gas containing hydrogen sulfide

Method used

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  • Device and process for recycling and treating hydrogen sulfide-containing chemical acid waste gas
  • Device and process for recycling and treating hydrogen sulfide-containing chemical acid waste gas
  • Device and process for recycling and treating hydrogen sulfide-containing chemical acid waste gas

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Embodiment 1

[0033] like figure 1 As shown, a chemical acid waste gas recovery and treatment device and process containing hydrogen sulfide, the device includes a blower 1, a burner 2, an incinerator 3, a waste heat utilization boiler 4, a steam drum 5, a primary absorption tower 8, Secondary absorption tower 9, washing tank 13, lye tank 15, oxidation tank 18, slurry tank 20, crystallization separation system 23, drying system 24, packaging system 25 and various centrifugal pumps.

[0034] The burner 2, the incinerator 3, the waste heat utilization boiler 4, the steam drum 5, the boiler feed pump 6, and the decompression device 7 constitute the ignition of the acid waste gas containing hydrogen sulfide, complete incineration and conversion into high temperature gas rich in sulfur dioxide, A conversion system that cools high temperature gas and recovers heat.

[0035] The boiler feed water pump 6 is communicated with the steam drum 5 and the decompression device 7 , and the boiler water 26...

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Abstract

The invention belongs to the technical field of chemical waste gas treatment, and mainly relates to a device and a process for recycling and treating hydrogen sulfide-containing chemical acid waste gas. The process for recycling and treating hydrogen sulfide-containing chemical acid waste gas comprises the following steps of: igniting and completely burning the hydrogen sulfide-containing chemical acid waste gas into sulfur dioxide-rich high-temperature flue gas, recycling much heat and adjusting the temperature of the flue gas by cold air, and enabling the flue gas to enter an adsorption tower; completely absorbing the sulfur dioxide in the flue gas by utilizing an alkaline solution, removing less alkaline solution and sulfite contained in the flue gas absorbed by the alkaline solution, and exhausting the demisted pure flue gas to the atmosphere. The sulfite, which is generated by absorbing sulfur dioxide by the alkaline solution, is oxidized, concentrated, crystallized and dried to obtain side product sulfate.

Description

technical field [0001] The invention belongs to the technical field of chemical waste gas treatment, and mainly relates to a device and a process for the recovery and treatment of chemical acid gas containing hydrogen sulfide. Background technique [0002] At present, there are many methods for desulfurization of waste gas in the chemical industry. The first type is wet desulfurization. According to the different desulfurizers, it can be divided into liquid absorption method and absorption oxidation method. The liquid absorption method includes chemical absorption method using alkaline solution, physical absorption method using organic solvent, and physical chemical absorption method using both physical absorption and chemical solvent; the most popular absorption oxidation method is the iron method. These methods generally can by-produce sulfur, sulfuric acid or sulfate and the like. [0003] The second category is dry desulfurization. Utilize the reducibility and flammab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50C01B17/96F23G7/08F22B1/18
CPCY02P20/129
Inventor 王兰甫史选增樊崇王宜民张国杰岑治宝高献伟田亚鹏胡保健
Owner 义马煤业集团煤生化高科技工程有限公司
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