Filtering and drying device for marsh gas purification

Abstract

The invention discloses a filtering and drying device for marsh gas purification. The device comprises a filtering tank, the filtering tank is connected with a marsh gas collection tank, marsh gas is collected from the marsh gas collection tank, generally, marsh gas in the marsh gas collection tank is extracted through a draught fan and introduced into a filtering tank, the filtering tank comprises a tank body, a partition plate which partitions the tank body vertically is arranged in the tank body, and an opening is formed in the middle of the partition plate; a gas inlet cavity is formed in the bottom of the tank body, a level-I filtering chamber is formed in the upper side of the gas inlet cavity, a level-II filtering chamber is formed above the partition plate, and a condensing and drying chamber is formed above the level-II filtering chamber. The device has the advantages of being reasonable in design and simple in structure; the independent gas inlet cavity is formed, so that gas entering the gas inlet cavity is divided into two flows, and by means of gas vents formed in a spiral air inlet pipe, a flow of gas is discharged and changed into irregular flow direction and collides with the other flow of gas, so that the speed reduction effect is achieved, natural clinoptilolite is arranged in a filter screen and serves as adsorbent, and the effect of preliminarily purifying and filtering marsh gas is achieved.

Description

technical field [0001] The invention relates to the field of development and utilization of biomass energy, in particular to a filtering and drying device for biogas purification. Background technique [0002] Biogas is a combustible gas with high calorific value, the main component is methane (CH 4 ) and carbon dioxide (CO 2 ) and a small amount of nitrogen (N 2 ), hydrogen (H 2 ), oxygen (O 2 ), hydrogen sulfide (H 2 S) and other gases, in which the methane content is 45% to 60%. Compared with other gases, biogas has better antiknock performance and is a good clean fuel. Traditionally, biogas is used for heating, cooking and lighting. With the continuous increase of biogas production, the medium and high-end utilization methods of biogas continue to expand. After purification and purification, biogas can be used for combined heat and power generation, incorporated into natural gas pipeline networks, vehicle fuel, chemical raw materials, and fuel cells. The Laholm ...

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Problems solved by technology

In addition, due to the working principle of the traditional biogas purification filter and drying device, the gas needs to be processed repeatedly, resulting in a large total volume.

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