Solid waste and alkali liquor circulating desulfurization and decarburization system and working method thereof

Abstract

The invention discloses a solid waste and alkali liquor circulating desulfurization and decarburization system and a working method thereof, and belongs to the technical field of marsh gas impurity removal and purification. The system comprises a basic oxide solid waste feeding device, a stirring device, a desulfurization and decarburization reactor, a first solid-liquid separator, an alkali liquor regeneration reaction device and a second solid-liquid separator. Desulfurization and decarburization are carried out on biogas by adopting basic oxide solid waste and alkali liquor, and the alkaliliquor after reaction can be recycled after being regenerated by the alkali liquor regeneration reaction device. The system is wide in raw material source, energy-saving, environment-friendly and highin efficiency; as the reaction parameter requirement is not high, the requirement on equipment in the system is low, the production and operation costs are greatly reduced, and the system is easy toconstruct; various byproducts are generated in the process, so that the economic benefit is good, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of biogas impurity removal and purification, and in particular relates to a solid waste and lye circulating desulfurization and decarbonization system and a working method thereof. Background technique [0002] Biogas is a flammable mixed gas produced by microbial fermentation of organic matter under anaerobic conditions. Its main components are methane and carbon dioxide, in addition to a small amount of hydrogen, nitrogen, carbon monoxide, hydrogen sulfide and ammonia, etc., the volume content of carbon dioxide At 25%-40%. The concentration of hydrogen sulfide in biogas is affected by the fermentation raw materials or fermentation process, and its content varies greatly, generally in the range of 0.8-14.5g / m 3 , this value has exceeded the national standard, so before using the biogas, the biogas must first be treated for impurity removal and purification. Purification and purification of biogas can not ...

AI Technical Summary

Problems solved by technology

The main reason is that the complex membrane making process makes the production cost high, and the performance stability of the membrane is poor due to the limitation of the current industrial production level.

At present, membrane separation technology cannot guarantee that the purification degree of natural gas can reach the pipeline transmission standard under any circumstances, so it is necessary to add traditional treatment technology as the final purification step

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