Production method of high-concentration sulfur dioxide gas

A sulfur dioxide and production method technology, applied in chemical instruments and methods, inorganic chemistry, sulfur compounds, etc., can solve the problems of waste heat waste, inconvenient use of safe transportation, large cooling water consumption, etc., and achieve the effect of avoiding overheating

Pending Publication Date: 2021-11-26
WYLTON CHINA CHEM
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Problems solved by technology

When incinerating sulfur to produce sulfur dioxide, if the concentration of sulfur dioxide in the sulfur dioxide flue gas is to be increased to 18%, the incineration temperature will reach above 1600°C. Due to the limitation of the high temperature resistance of the equipment (operating temperature <1150°C), the sulfur produced by burning sulfur The concentration of sulfur dioxide in the flue gas will not be too high, generally lower than 13%, which cannot meet the needs of higher sulfur dioxide concentration in some occasions
Oxygen-enriched or pure oxygen incineration of sulfur can produce high concentrations of sulfur dioxide, but its cost is higher, and the incineration temperature is also higher, which cannot be tolera

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  • Production method of high-concentration sulfur dioxide gas

Examples

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[0013] Example 1 of the present invention: a method of producing high concentration sulfur dioxide gas, figure 1 As indicated, the high-temperature sulfur dioxide to the burning produced by the burning furnace is cooled, and after the flue gas is used through the flue gas fan, the pipe is returned to the front end of the production system and the air mixed into the burning furnace together, and the mixed gas is mixed. The sulfur dioxide gas concentration in the concentration of sulfur dioxide is ≤ 5.36%, and the remaining sulfur dioxide smile gas enters the downstream process, and the liquid sulfur is fed into the incinerabilibulfur furnace under the action of the liquid sulfur. This loop reciprocates.

[0014] The high-temperature sulfur dioxide to the burning of the burning furnace is first caught in the heat boiler to 310 ° C ~ 330 ° C, and enter the provincial coal armor to cool down to 130 ° C ~ 150 ° C, and some of the sulfur dioxide to the saulinated smile to return to the ...

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Abstract

The invention discloses a production method of high-concentration sulfur dioxide gas, which comprises the following steps: cooling sulfur dioxide flue gas generated by combustion of a sulfur burning furnace, enabling part of the flue gas to enter a downstream process, enabling the rest flue gas to enter the sulfur burning furnace after being mixed with air before returning to the sulfur burning furnace through a pipeline, and simultaneously spraying and burning liquid sulfur in the sulfur burning furnace to generate sulfur dioxide flue gas with a proper concentration, and repeating the process. According to the method, the flue gas cooled by a waste heat boiler flows back, so that the concentration of sulfur dioxide in the flue gas can be increased to be higher, overtemperature of the sulfur burning furnace is avoided, and a large amount of heat can be recycled.

Description

technical field [0001] The invention relates to a production method of sulfur dioxide gas, in particular to a production method of high-concentration sulfur dioxide gas. Background technique [0002] Industrial production of sulfur dioxide is mainly obtained from direct incineration of sulfur-containing raw materials. When incinerating sulfur to produce sulfur dioxide, if the concentration of sulfur dioxide in the sulfur dioxide flue gas is to be increased to 18%, the incineration temperature will reach above 1600°C. Due to the limitation of the high temperature resistance of the equipment (operating temperature <1150°C), the sulfur produced by burning sulfur The concentration of sulfur dioxide in the flue gas will not be too high, generally lower than 13%, which cannot meet the demand for higher sulfur dioxide concentration in some occasions. Oxygen-enriched or pure oxygen incineration of sulfur can produce high-concentration sulfur dioxide, but its cost is higher, and ...

Claims

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Application Information

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IPC IPC(8): C01B17/54F27D17/00
CPCC01B17/54F27D17/004F27D17/00F27D2017/006Y02P20/129
Inventor 张培清潘木俊
Owner WYLTON CHINA CHEM
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