Treatment method for purifying sewage and tail gas from furnace gas in acid production from gypsum
A furnace gas purification and tail gas treatment technology, which is applied in the fields of degassed water/sewage treatment, neutralized water/sewage treatment, water/sewage multi-stage treatment, etc. Sewage cannot be recycled in a closed circuit, so as to achieve the effect of low desulfurization cost, reduction of discharge cost and standard discharge
Inactive Publication Date: 2014-09-03
葛洲坝石门特种水泥有限公司
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Problems solved by technology
[0004] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides a package treatment method for purifying sewage and tail gas from gypsum acid production furnace gas, so as to solve the problem of current gypsum production Acid furnace gas purification of sewage, acid sewage in tail gas treatment methods cannot be recycled in a closed circuit, sulfuric acid tail gas desulfurization costs are high, and by-products after desulfurization are difficult to deal with, etc.
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[0011] The present invention will be further described in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following situations.
[0012] The treatment method of the gypsum acid making furnace gas purification sewage and tail gas according to the present invention is mainly divided into three large process flow cycles, that is, the first is the acidic sewage cycle of the purification system, the second is the acidic sewage treatment cycle of the sulfuric acid system, and the third is the sulfuric acid system. Tail gas treatment cycle, according to the needs of process requirements in each process cycle and the characteristics of materials, the present invention rationally reengineers the process, uses the acid sewage generated by the acid sewage cycle of the purification system as the raw material for the acid sewage treatment station of the sulfuric acid system, and converts the acid sewage of the sulfuric acid system ...
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A treatment method for purifying sewage and tail gas from gypsum acid furnace gas, which belongs to the field of industrial sewage and waste gas treatment, and is mainly divided into acid sewage circulation in the purification system, acid sewage treatment circulation in the sulfuric acid system, and tail gas treatment circulation in the sulfuric acid system. The method will purify the system The acid sewage produced by the acid sewage cycle is used as the raw material of the acid sewage treatment station of the sulfuric acid system, the solid produced by the acid sewage treatment station of the sulfuric acid system is used as the raw material of gypsum acid production, and the alkaline sewage produced in the acid sewage treatment cycle of the sulfuric acid system is used as the tail gas treatment Process desulfurizer. The present invention solves the problem of the treatment of acidic sewage produced by gypsum acid production, and realizes the recycling of acidic sewage washed by the purification system. Since the sulfuric acid sewage and the treated sewage are used as the desulfurizer for tail gas treatment, the present invention has a very low desulfurization cost.
Description
technical field [0001] The invention belongs to the field of industrial sewage and industrial waste gas treatment, and in particular relates to a treatment method for purifying sewage and tail gas from gypsum acid furnace gas. Background technique [0002] Compared with sulfuric acid produced by kiln gas produced by gypsum and pyrite boiling furnace gas, the composition of kiln gas and furnace gas is very different, and the harmful impurities are also very different, which determines the difference between gypsum acid and pyrite. The acid has different characteristics in the process: ①In the traditional pyrite acid production process, the furnace gas after the pyrite is roasted in a fluidized fluidized furnace enters the purification system, and the sewage after the purification of the furnace gas contains iron oxide, arsenic, fluorine and a small amount of For impurities such as heavy metals, the sewage is settled by an inclined plate and filtered through a CN filter, which...
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IPC IPC(8): C02F1/20C02F9/04B01D53/78B01D53/96B01D53/50C02F1/66
Inventor 覃爱平唐远财侯益宏程海平邓建华
Owner 葛洲坝石门特种水泥有限公司