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Anaerobic biological desulfurization method and device for methane

A biogas desulfurization and biogas technology, which is applied in gas fuel, petroleum industry, fuel and other directions, can solve the problems of difficult oxygen supply control for oxygenated biological desulfurization, high labor intensity for desulfurization agent replacement, and high operating cost of chemical desulfurization, so as to avoid biogas The effect of reducing calorific value, reducing energy consumption and stable operation

Active Publication Date: 2014-05-14
BIOGAS SCI RES INST MIN OF AGRI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main technical problems to be solved include: overcoming the high operating cost of chemical desulfurization and the labor-intensive replacement of desulfurizing agents, solving the difficulty in controlling the oxygen supply of oxygenated biological desulfurization and the danger caused by excessive oxygen

Method used

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  • Anaerobic biological desulfurization method and device for methane

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Embodiment 1

[0016] Example 1. See figure 1 , The biogas anaerobic biological desulfurization device of the present invention is a vertical packed tower. The biogas inlet 1 and the biogas outlet 2 are respectively arranged at the top and the bottom of the tower. Plastic air balls 6 with a high specific surface area of ​​φ25-50mm and elastic packings 7 are placed in the tower. The two types of packings are placed alternately. . A spray nozzle 8 is arranged above the top layer of packing, and is connected with the spray liquid inlet 3 . The spray liquid outlet 4 is located in the middle and upper part of the outer side of the tower and communicates with the bottom of the tower to ensure that a desulfurization liquid section with a height of 30-50 cm is formed in the tower. The height of the vertical pipe connecting the bottom of the tower and the spray liquid outlet 4 is about 2 times of the biogas pressure (water column).

[0017] Implementation steps of the present invention are as fo...

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Abstract

The invention discloses a methane desulfurization and purification method and a methane desulfurization and purification device. The invention comprises that: wastewater or treated effluent containing oxides such as NO3-, NO2-, Fe3+ and the like is introduced into a desulfurizing tower from a spraying liquid inlet (3) and is uniformly sprayed on an elastic filler (7) through a spray nozzle; methane enters the desulfurizing tower through a methane inlet (1) at the bottom of the desulfurizing tower, is uniformly distributed through a porous gas distribution plate (5) and alternately passes through a microbe-attached plastic air balloon (6) and the elastic filler (7); the plastic air balloon (6) and the elastic filler (7) are alternately arranged; the desulfurization microbes are attached to the plastic air balloon (6) and the elastic filler (7) or blocked in reaction solution by the filler; and hydrogen sulfide is converted into sulfur or sulfate by taking NO3-, NO2- and Fe3+ as electron acceptors so as to fulfill the aim of methane desulfurization. The desulfurized methane is exhausted from a methane outlet (2) on the top of the tower; the desulfurized spraying liquid enters the bottom of the desulfurizing tower and is discharged through a spraying liquid outlet (4); and the height of a vertical pipe connecting the spraying liquid outlet (4) and the bottom of the tower is about 2 times that of methane pressure (a water column).

Description

technical field [0001] The invention relates to a gas separation and purification technology, in particular to a biogas anaerobic biological desulfurization method and device, which are suitable for livestock and poultry breeding waste, high-concentration industrial organic wastewater, residual sludge from urban sewage plants, crop straw and organic waste, etc. The desulfurization and purification treatment of biogas produced by anaerobic digestion biogas project is also suitable for the desulfurization of landfill gas or natural gas. Background technique [0002] Raw materials for biogas fermentation, such as livestock and poultry waste, high-concentration industrial organic wastewater, residual sludge from urban sewage plants, crop straw, and organic waste, are all biomass materials, which contain a considerable amount of organic or inorganic sulfur. During the process, it is converted into hydrogen sulfide, which is discharged with the biogas. Therefore, the biogas contai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L3/10
Inventor 邓良伟
Owner BIOGAS SCI RES INST MIN OF AGRI
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