Methane utilization system and methane utilization method for waste incineration plant

Abstract

The invention provides a methane utilization system and a methane utilization method for waste incineration plant. The utilization system for waste incineration plant comprises a first methane treating system and a second methane treating system; the first methane treating system comprises a first water-sealed tank, a pressure stabilizing buffer tank, a booster fan and waste incinerator secondary air casing pipes; the secondary air casing pipes comprise the first casing pipe and the second casing pipe, and the first casing pipe communicates with the second casing pipe; the methane mixes with secondary air coming from the second casing pipe after passing through the first casing pipe along the first water-sealed tank and the booster fan, and then enters the furnace of a waste incinerator; the second methane treating system comprises a second water-sealed tank and a methane dedicated incinerator; and the methane goes through the second water-sealed tank and then enters the methane dedicated incinerator to be subjected to temporary incineration treatment. According to the utilization system and the utilization method for waste incineration plant methane, the problems of potential safety hazards and energy waste existing in the methods that the methane is diffused into air to be burned or is sucked into a boiler to be burned through an air flue in an existing waste incineration plant are effectively solved.

Description

technical field [0001] The invention relates to a biogas utilization system and a utilization method of a garbage incineration plant. Background technique [0002] At present, domestic waste incineration plants mainly use the following methods for anaerobic biogas treatment in the plant area: [0003] First, the direct burning method of the torch to the air; [0004] This method causes a large amount of energy waste and also causes environmental pollution; [0005] Second, it is sucked into the air duct by the boiler fan and sent to the boiler for combustion. Since the main component of biogas is methane, the explosion limit of methane is 5% to 15%; [0006] This method is to mix the biogas with a large amount of air in the air duct and then send it to the boiler. It is easy to form an explosion range in the air duct. Therefore, this method has great potential safety hazards and may easily lead to explosion accidents; [0007] Third, the gas storage tank is matched with t...

AI Technical Summary

Problems solved by technology

[0008] This method needs to build a large gas storage tank in the factory area, which occupies a large area, wastes the construction resources of the factory area, and increases the burner equipment, and the overall construction cost of the system is high.

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