Method and apparatus for preparing sulfur-free natural gas from methane

A technology for preparing equipment and natural gas, applied in gas fuel, petroleum industry, fuel and other directions, can solve the problems of low purity of biogas, low utilization rate of biogas preparation raw materials, unsuitable for large-scale and high-efficiency utilization, etc. High efficiency and high purity of biogas

Inactive Publication Date: 2009-07-08
DONGGUAN CAMDA GENERATOR WORK
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  • Abstract
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Problems solved by technology

[0009] 1. The prepared biogas has low purity and is not suitable for large-scale and high-effi...

Method used

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  • Method and apparatus for preparing sulfur-free natural gas from methane
  • Method and apparatus for preparing sulfur-free natural gas from methane
  • Method and apparatus for preparing sulfur-free natural gas from methane

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Embodiment Construction

[0048] In order to further illustrate the principle and structure of the present invention, now in conjunction with Figure 1 ~ Figure 3 The preferred embodiments of the present invention are described in detail, but the embodiments are only for illustration and explanation, and cannot be used to limit the patent protection scope of the present invention.

[0049]A method for preparing sulfur-free natural gas from biogas, wherein the method for preparing sulfur-free natural gas from biogas comprises the steps of:

[0050] a. Removal of impurities. The removal of impurities is to input the prepared biogas into a solid-gas separation device through a control valve and control its pressure range between 0.5Mpa and 2Mpa, and remove the gas and dust and other raw material impurities in the biogas Phase separation, the biogas flow containing raw material impurities enters the separation device for solid-gas separation and gas-liquid separation, raw material impurities such as dust a...

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Abstract

The invention provides a method for preparing natural gas without sulfur by marsh gas, which comprises the steps of: a, impurity removal; b, desulfurization; c, pressurized pushing; d, absorption displacement, namely carbon dioxide gas contained in the marsh gas processed by the steps is absorbed through an absorption tower in a solution displacement mode; e, cooling dehydration, namely the marsh gas processed by the steps is cooled and finishes the dehydration, and the water content of the marsh gas is controlled to be below 80 percent of relative humidity; and f, secondary filtration, namely the marsh gas processed by the step e is further filtered through a secondary filtration device to remove other impurities in the marsh gas to obtain the natural gas without the sulfur (the content of methane is between 85 and 99 percent). The invention also discloses a device for preparing the natural gas without the sulfur by the marsh gas. The method has the advantages that the marsh gas has high purity and is suitable to be massively and efficiently utilized, the utilization rate of raw materials for preparing the marsh gas is improved and the like.

Description

technical field [0001] The invention relates to a method for preparing sulfur-free natural gas, in particular to a method and a device for preparing sulfur-free natural gas from biogas. Background technique [0002] Biogas is a combustible gas produced by microbial fermentation of organic matter in an anaerobic environment under certain conditions of temperature, humidity, and pH. Since this gas was first found in swamps, lakes, and ponds, people called it biogas. Biogas contains various gases, the main component of which is methane (CH4). [0003] The process in which biogas bacteria decompose organic matter and produce biogas is called biogas fermentation. According to the role of various bacteria in the biogas fermentation process, biogas bacteria can be divided into two categories. The first type of bacteria is called decomposing bacteria, and its function is to decompose complex organic matter into simple organic matter and carbon dioxide (C02). Among them, there ar...

Claims

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Application Information

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IPC IPC(8): C10L3/10
Inventor 贺少君
Owner DONGGUAN CAMDA GENERATOR WORK
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