Method for removing flue gas through rosin condensate recovery

Abstract

The invention belongs to the field of recovering and using rosin condensate, and discloses a method for removing flue gas through rosin condensate recovery. The condensate is recovered for oil water separation, a microorganism solution containing desulfurizing bacteria and denitrifying bacteria is added and serves as circulating absorbing liquid, sulfate ions and nitrate ions in the flue gas absorbing waste water are treated, so that the safety rate of the rosin distillation condensate is increased, SO2 and NOx in the flue gas can be effectively removed, while a conventional method is slow in treatment speed and large in occupied area and causes secondary pollution.

Description

【Technical field】 [0001] The invention relates to the field of recycling turpentine condensed water, in particular to a method for recycling turpentine condensed water and removing smoke. 【Background technique】 [0002] The distillation process of turpentine processing requires a large amount of condensed water for cooling. However, in conventional processing methods, the condensed water will be discharged through recycling and wastewater treatment. However, the condensed water is relatively clean compared to turpentine wastewater and can be used for recycling. However, due to Condensed water contains a mixture of oil and fat, which is easy to burn. Flue gas is the gas produced by the boiler after combustion. The temperature can reach about 150°C-200°C. The condensed water distilled from turpentine is directly refluxed for water film dust removal, which may cause combustion and cause safety accidents. , and, the flue gas contains a large amount of SO 2 and NO x It will cau...

AI Technical Summary

Problems solved by technology

[0002] The distillation process of turpentine processing requires a large amount of condensed water for cooling. However, in conventional processing methods, the condensed water will be discharged through recycling and wastewater treatment. However, the condensed water is relatively clean compared to turpentine wastewater and can be used for recycling. However, due to Condensed water contains a mixture of oil and fat, which is easy to burn. Flue gas is the gas produced by the boiler after combustion. The temperature can reach about 150°C-200°C. The condensed water distilled from turpentine is directly refluxed for water film dust removal, which may cause combustion and cause safety accidents. , and, the flue gas contains a large amount of SO 2 and NO x It will cause great pollution to the environment. Nowadays, industrially remove SO from flue gas 2 and NO x The method of wet limestone is commonly used for removal, but the use of wet lime method has the disadvantages of high equipment operation cost, large floor area, easy scaling and corrosion of equipment, and easy to cause secondary pollution, and some use microbial flora to treat the flue gas SO 2 and NO x However, due to the slow growth cycle of microorganisms and poor treatment effect, there is currently no method to use condensed water distilled from rosin to remove dust from flue gas without causing secondary pollution

Therefore, in the process of recovering flue gas from turpentine distillation condensate, the following problems need to be solved: (1) the condensed water contains grease, which will cause fire and cause a fire when it encounters high temperature; (2) the condensed water cannot effectively remove SO in the flue gas 2 and NO x , the conventional method has a slow treatment effect and occupies a large area, which will cause secondary pollution

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