Biogas generation device, coal straw gasifying device and control method

Abstract

The invention discloses a biogas generation device, a coal straw gasifying device and a control method. The biogas generation device is mainly composed of a biogas tank, a rotary biogas generator, a front isolation wall, a spiral slurry extractor, a rear isolation wall, a motor, a driving conical gear, a driven conical gear, a spiral feeder, a sealing clamp, a mud pump or a spiral mud extractor, acentrifugal spin-drying machine and a heating pipe. The coal straw gasifying device is structurally characterized in that a furnace comprises a shell, a rotary kiln, an interlayer rotary net and an inner-layer rotary net sequentially from outside to inside, and coal is sent into an interlayer of the rotary kiln and the interlayer rotary net. Straw is sent into an interlayer of the interlayer rotary net and the inner-layer rotary net. A biogas burner ignites the straw which is burnt to ignite coal powder. The rotary kiln rotates, and water vapor and high-temperature coal in the rotary kiln arein chemical reaction to generate coal gas. The high-temperature coal gas is burnt to heat a boiler to generate water vapor and to heat combustion air and water in the biogas tank. The coal gas becomes clean fuel gas after being desulfurized. The biogas generation device can generate biogas in any season.

Description

Technical field: [0001] The invention relates to a biogas generating device, a coal straw gasification device and a control method. Background technique: [0002] The waste left by rural agricultural production——crop straw is the raw material for biogas production. The straw is mixed with water and fermented, and the bacteria decompose and decompose the straw at a temperature of 33°C to produce biogas with a methane content of 70%. When the minimum temperature is above 10°C, the straw is soaked in water to ferment to produce heat so that the straw hydrate is kept above 33°C, and the bacteria decompose and decompose the straw at a temperature of 33°C to produce biogas. The lowest temperature is above 10°C, and only Hainan Province can reach this temperature standard throughout the year, while Heilongjiang Province in the northeast cannot reach this temperature standard throughout the year. After the straw is mixed with water, the straw will float on the water surface, and t...

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Problems solved by technology

[0005] Rich and wealthy rural people in rural areas use bottled liquefied petroleum gas and biogas, and some people use honeycomb coal, but the pollution of honeycomb coal is very large, and most rural people burn wood

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