Methane recycling treatment system having high-efficiency purification function

Abstract

The invention discloses a methane recycling treatment system having a high-efficiency purification function; the methane recycling treatment system comprises a straw storage warehouse, a rapid degrading tank, a hydrolysis tank, an independent heat exchanger, a CSTR (Continuous Stirred Tank Reactor) integrated reactor, a methane purification device, a leaf fertilizer warehouse, a biogas slurry temporary storage tank, a solid-liquid separator and an organic fertilizer warehouse; the methane purification device comprises a desulfuration device, a decarbonisation device, a dehydration device, a compressor, a gas storage tank, a pipeline and a valve; the desulfuration device is used for removing H2S in methane by adopting an alkaline solution spraying method; methane and an alkaline solution are respectively dispersed through a gas uniform distributor and a liquid uniform distributor; H2S gas in the methane is sufficiently reacted with the alkaline solution through two-stage reaction plates; by means of the decarbonisation device, CO2 gas can be sufficiently contacted with the alkaline solution effectively; furthermore, a new alkaline solution is provided in real time by utilizing a sensor and an electric control valve, and the concentration of the alkaline solution is ensured, so that higher decarbonisation efficiency is ensured.

Description

technical field [0001] The invention belongs to the technical field of biogas processing equipment, in particular to a biogas resource processing system with high-efficiency purification function. Background technique [0002] Since the 1970s, with the impact of the global oil crisis and the improvement of environmental protection awareness, countries around the world have paid more and more attention to the development and efficient conversion of biomass energy, and have formulated development research plans. The energy farm in the United States, the sunshine plan in Japan, the green energy project in India and the alcohol energy plan in Brazil are all special supports for biomass research and development. Material Engineering" major project. At present, biomass energy utilization accounts for 14% of the world's total energy, which is equivalent to 1.257 billion tons of oil. According to the United Nations Environment Program report, all kinds of grains grown in the world...

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Problems solved by technology

In the use of alkaline solution method to remove H 2 process of S, alkaline solution and H 2 The S reaction will reduce the concentration of the alkaline solution, thereby reducing the absorption efficiency; in the industry, the alkaline solution method is used to remove H 2 S, one is to directly pass the gas into the alkaline solution, and the other is to use the method of spraying. The former method wastes the alkaline solution, and the common problem of the latter method is that the spray mist and H 2 S gas cannot be fully contacted effectively, resulting in low desulfurization rate

[0007] In the use of alkaline solution method to remove CO 2 In the process, the gas is usually directly passed into the alkaline solution, and there is CO 2 The gas cannot be fully contacted with the alkaline solution effectively, resulting in a low desulfurization rate; at the same time, the alkaline solution and CO 2 The reaction will reduce the concentration of the alkaline solution, thereby reducing the absorption efficiency

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