Dimethyl ether prepared from marsh gas and preparing method for the same

A technology of dimethyl ether and biogas, which is applied in the field of producing dimethyl ether fuel from biogas, can solve the problems of waste, low output, and biogas processing, and achieve the effects of promoting production and development, broad market prospects and protecting the environment.

Inactive Publication Date: 2007-09-12
苏宏文
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although there are many raw materials and resources for biogas production, the production and application of biogas are very limited.
From the point of view of production, most of them are self-sufficient non-commodity production by one household in rural areas, with small scale and low output. From the point of view of application, it can only be used in the form of gas for cooking and cooking directly, and it cannot be processed into biogas that is easy to use. Liquid power fuels for storage, transport and use in vehicles
This restricts the production and development of biogas, and makes a lot of resources that can produce biogas useless, which is a huge waste in terms of resources; it is very unfavorable for human survival in terms of environment.

Method used

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  • Dimethyl ether prepared from marsh gas and preparing method for the same
  • Dimethyl ether prepared from marsh gas and preparing method for the same
  • Dimethyl ether prepared from marsh gas and preparing method for the same

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Embodiment Construction

[0013] Using biogas to produce dimethyl ether fuel is to compress a certain amount of biogas to 3.0-3.6Mpa through a compressor, then use a known wet desulfurization process for rough desulfurization, and then use a known dry desulfurization process for fine desulfurization. Desulfurization up to sulfur content less than 10 -8 , using the known ammonia water decarbonation process to remove part of the carbon dioxide in the biogas so that the carbon dioxide content remaining in the biogas accounts for 6-20% of the total volume, through a known tubular steam reformer, through water steam and on a nickel-based catalyst Under the action of conversion, the catalyst uses Ni / Al 2 o 3 , it is known that the tube wall temperature of the reformer is controlled at 700-920°C, the temperature of the gas medium is 680-820°C, the operating pressure of the reformer is 1.6-4.0Mpa, the water-carbon ratio is 3.5, and the gas flow rate is 500-3000h -1 , converted to H 2 , CO and CO 2 of synth...

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Abstract

This invention relates to dimethyl ether fuel prepared with biogas and a method characterizing that after biogas is compressed, desufurized (H2S) and part of CO2 in it is taken off, a transforming device is used to transform it into a synthesized gas composed of H2, CO and CO2, which is pressed by a compressor to form methyl alcohol first under the action of a catalyst with methyl alcohol composition and dewater functions then to be dewatered immediately to get the fuel used as the power fuel of cars instead of diesel, gas and liquefied gas or as the aerosol and vesicant instead of Freon.

Description

technical field [0001] The invention relates to a renewable biomass new energy source, new development and utilization of a new fuel and its technology, in particular to a biogas-based dimethyl ether (DME) fuel and a production method thereof. Background technique [0002] Biogas is a renewable biomass energy and new fuel. It is a combustible gas produced by the decomposition and fermentation of organic matter under anaerobic conditions, and its main component is about 70% methane (CH 4 ) and about 30% of carbon dioxide (CO 2 ). The raw materials for producing biogas are very extensive and the resources are huge, such as human, animal manure, domestic garbage, crop straw, weed leaves, various planting, breeding, various foods, waste residues from meat processing, sewage, leftovers and urbanization Sediments from septic tanks and domestic sewage are good raw materials for biogas production. The accumulation and decay of these things is not only a manifestation of dirty, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/00C07C43/04C07C41/09
Inventor 苏宏文苏哲苏畅
Owner 苏宏文
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