A device and method for solid-liquid separation combined with pressure swing adsorption for high-efficiency biogas production and purification

Abstract

The invention discloses a device and method for high-efficiency biogas production and purification of solid-liquid separation combined with pressure swing adsorption. The device includes a solid-liquid separation component, a gas production component, a gas collection component, a desulfurization drying tower, a filter tower, and a primary adsorption tank , secondary adsorption tank, auxiliary vacuum tank, the solid-liquid separation assembly includes a component frame, a centrifugal separation tank, a liquid collection tank mechanism, a slag discharge mechanism, and a feed distribution mechanism, and the centrifugal separation tank is a circular shape with an open bottom A platform-shaped shell structure, the side of the centrifugal separation tank has a plurality of centrifugal separation holes connected to the inside, the method includes, S1: firstly perform solid-liquid separation; S2: use the solid and liquid separated in the step S1 to use the The gas production component performs fermentation to produce gas; this process integrates the three technologies of solid-liquid separation of livestock and poultry manure, biogas slurry fermentation gas production, and biogas purification to achieve high-efficiency biogas production, re-optimize the solid-liquid separation technology, and realize The efficient separation of solid phase materials and liquid phase materials greatly improves the efficiency of biogas production.

Description

technical field [0001] The invention relates to the technical field of biogas production and purification, in particular to a device and method for high-efficiency biogas production and purification in combination with solid-liquid separation and pressure swing adsorption. Background technique [0002] Biogas is a combustible mixed gas produced by microorganisms. Its main component is methane, with a content of about 50-75%, followed by 25-45% carbon dioxide, and other gases, such as hydrogen sulfide, carbon monoxide, nitrogen, water vapor, oxygen, etc. Biogas purification is mainly to remove hydrogen sulfide, carbon dioxide, sulfur dioxide, halogenated mixed gases and siloxane in biogas. [0003] The solid-liquid separation technology refers to the separation of the solid phase and the liquid phase of livestock and poultry manure, which reduces the solid content in the liquid phase and the moisture content of the solid phase, and reduces the load and treatment costs of sub...

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Problems solved by technology

[0005] At present, most farms use mixed fermentation to prepare biogas, but the effect of this method is not good; the existing process of using solid-liquid separation device to prepare biogas also has the disadvantage of low separation efficiency

The fermented biogas contains a lot of impurities, so the utilization rate is relatively low; the process structure of purifying biogas using the principle of pressure swing adsorption is relatively complicated, which makes the corresponding equipment bulky and energy-consuming

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