Blast furnace gas tower-type acid-gas removal device
A technology for acid gas and blast furnace gas, which is applied in the fields of combustible gas purification, combustible gas purification/reconstruction, petroleum industry, etc. Equipment corrosion and other problems, to achieve the effect of reducing maintenance rate and operating cost, reducing equipment corrosion and prolonging service life
Inactive Publication Date: 2016-09-21
BERIS ENG & RES CORP
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Problems solved by technology
[0002] In the metallurgical gas industry, the blast furnace gas from the blast furnace gas residual pressure turbine power generation unit (TRT) or the pressure reducing valve group needs to remove acid gas. The acid gas is mainly the gaseous compounds of sulfur and chlorine. The root ions of the components (such as chloride ion, sulfite ion, sulfate ion, etc.) will dissolve in the pipeline condensate, causing serious corrosion to the gas pipeline and subsequent equipment, and will reduce the service life of the pipeline and equipment
[0003] At present, in most of the blast furnace gas operating devices, the acidic components in the gas have corroded the pipes and equipment, which increases the maintenance cost and repair rate of equipment and pipelines, and seriously affects the normal operation of the gas project.
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[0018] In order to better understand the purpose, structure and function of the present invention, a blast furnace gas tower-type acid gas removal device of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0019] Such as figure 1 As shown, it is shown as a blast furnace gas tower-type acid gas removal device of the present invention, which is used to remove acid gas in blast furnace gas, including a spray scrubber 5, and the air inlet of the spray scrubber 5 is set There is a pre-washing device 4. The pre-washing device 4 is used to pre-wash and deacidify the blast furnace gas before it enters the spray scrubber 5. Generally speaking, the working temperature of the blast furnace gas from the TRT or pressure reducing valve group is 80-90°C , the limit temperature can reach 180°C. In order to enhance the washing effect of absorbing acid gas, a pre-washing device 4 (pre-washing liquid is industrial new water) is set ...
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The invention discloses a blast furnace gas tower-type acid-gas removal device which is used for removing acid gas in blast furnace gas and comprises a spray scrubber (5). A pre-scrubbing device (4) is arranged at a gas inlet of the spray scrubber (5) and can carry out cooling and dust removal on high-temperature gas; a uniform distributor is arranged at the upper part of the spray scrubber (5) and can uniformly distribute the gas in a tower; a scrubbing solution sprayer (51) is arranged at the upper part of the uniform distributor and can spray out scrubbing solution to carry out secondary cooling on the gas and remove part of the acid gas; an alkali liquor sprayer (52) is arranged at the upper part of the scrubbing solution sprayer (51) and can spray out alkali liquor to perform a neutralization reaction with the gas subjected to secondary scrubbing and cooling so as to remove the acid gas. According to the blast furnace gas tower-type acid-gas removal device disclosed by the invention, the acid gas in the blast furnace gas can be effectively removed, sulphate ions and chloride ions are effectively removed, and corrosion of an acid gas-phase component and acid group anions dissolved in condensate to equipment and pipelines is avoided.
Description
technical field [0001] The invention relates to the field of gas in the metallurgical industry, in particular to a blast furnace gas tower-type acid gas removal device for removing acid gas components in blast furnace gas in gas engineering. Background technique [0002] In the metallurgical gas industry, the blast furnace gas from the blast furnace gas residual pressure turbine power generation unit (TRT) or the pressure reducing valve group needs to remove acid gas. The acid gas is mainly the gaseous compounds of sulfur and chlorine. The root ions of the components (such as chloride ions, sulfite ions, sulfate ions, etc.) will dissolve in the pipeline condensate, which will cause serious corrosion to the gas pipeline and subsequent equipment, and will reduce the service life of the pipeline and equipment. [0003] At present, most of the blast furnace gas operating devices have corroded pipelines and equipment by acidic components in the gas, which increases the maintenanc...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01D53/78B01D53/48B01D53/68C10K1/12
CPCB01D53/48B01D53/68B01D53/78C10K1/122
Inventor 侯建勇王亚蕊关绅张如海邱建宏
Owner BERIS ENG & RES CORP