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Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide

A technology of oxygen-enriched air and hydrogen sulfide, applied in chemical instruments and methods, sulfur compounds, separation methods, etc., can solve problems such as excessive temperature of hydrogen sulfide incinerators, damage to refractory bricks lining the furnace, and rise in flame temperature. Effect of no waste acid, improvement of waste heat recovery efficiency, and content reduction

Inactive Publication Date: 2012-03-14
CHINA PETROCHEMICAL CORP +1
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Problems solved by technology

[0005] However, burning with oxygen-enriched air instead of ordinary air will cause the flame temperature to rise, which will cause excessive temperature in the hydrogen sulfide incinerator, which will easily cause damage to the refractory brick lining the furnace

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  • Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide
  • Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide
  • Method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide

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Embodiment Construction

[0035] The technical solutions of the embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] figure 1 It is the process flow diagram of the method embodiment 1 of the method embodiment 1 for producing sulfuric acid by oxygen-enriched air incineration containing hydrogen sulfide acid gas, as figure 1 As shown, the method includes:

[0037] Step 101, combust acid gas containing hydrogen sulfide and oxygen-enriched air in a hydrogen sulfide incinerator, and discharge the furnace gas after combustion. Utilize the heat released by the combustion of the acid gas containing hydrogen sulfide and oxygen-enriched air to heat the boiler feed water in the cooling water pipe provided in the hydrogen sulfide incinerator; the boiler feed water from the boiler drum is heated through the cooling water pipe Then return to the steam drum.

[0038] The hydrogen sulfide-containing acid gas and oxygen-...

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Abstract

A method for producing sulfuric acid by oxygen-enriched air incineration of acid gas containing hydrogen sulfide belongs to the technical field of environment protection technology and comprises the following steps of: sending the acid gas containing hydrogen sulfide and oxygen-enriched air into a hydrogen sulfide incinerator for incineration, discharging the furnace gas after incineration, and recovering high-temperature furnace gas heat energy of an outlet; adding water into the furnace, and heating by the utilization of heat released from incineration; using dilute sulfuric acid discharged from a purification system as addendum water; demisting and drying the cooled furnace gas, entering into a conversion system for heat exchange preheating so as to generate sulfur trioxide, carrying out heat exchange on the discharged conversion gas, and entering into an absorbing tower for absorption. According to the invention, high and medium grade heat energy generated during the sulfuric acid production process is fully utilized, and dilute sulfuric acid is fully recovered and used, thus realizing less investment, low cost, high recovery rate of waste heat, clean production and no pollution in the production of sulfuric acid.

Description

technical field [0001] The invention belongs to the technical field of air pollutant prevention and control in environmental protection, and in particular relates to an incineration treatment method for acid gas containing hydrogen sulfide. technical background [0002] Acid gas containing hydrogen sulfide (sometimes called acid gas) is generally produced in petroleum refining, natural gas purification and coking, coal gasification, petroleum processing and other production processes. Because hydrogen sulfide is highly toxic and flammable, the gas cannot be released directly into the atmosphere. Conventional methods for treating acid gas containing hydrogen sulfide, besides recovering sulfur by the Claus method, can also produce sulfuric acid by wet or dry process. Wet acid production technologies are mainly the WSA process of Topsoe Company and the SULFOX process of Mengmoke Company. Due to the limitation of process conditions, the hydrogen sulfide wet acid production proc...

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Application Information

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IPC IPC(8): B01D53/75B01D53/76B01D53/86B01D53/52C01B17/74
CPCY02P20/10Y02P20/129
Inventor 张超林杨振刚纪罗军黄新
Owner CHINA PETROCHEMICAL CORP
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