Biogas mixed gas and production process thereof

A technology for mixing fuel gas and production process, applied in gas fuel, fuel, petroleum industry and other directions, can solve the problem that natural gas cannot meet the market demand, and achieve the goal of being beneficial to rural energy conservation, emission reduction and ecological environmental protection, reducing the greenhouse effect and reducing damage. Effect

Inactive Publication Date: 2013-07-24
王建瓯 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the current status of my country's natural gas development cannot meet the market demand of rapidly developing small towns and vast affluent villages in China

Method used

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  • Biogas mixed gas and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 Preparation of mixed gas

[0033] The biogas produced during the fermentation of the biogas project meets the specified standards through desulfurization and purification, and then enters the gas-liquid separator for dehydration and filtration to obtain CH 4 Biogas with a content of 60% is used as the main gas source to be mixed. Liquid light hydrocarbons with a density of 0.63-0.68kg / L, 50% of the evaporation temperature not higher than 75°C, 90% of the evaporation temperature not higher than 135°C, and a total sulfur content of not more than 0.04% are produced by using vaporizer equipment. Under the conditions of rated liquid level, temperature, pressure, flow rate, etc., the air system automatically performs gas-liquid mass exchange with liquid light hydrocarbons in proportion, so that liquid light hydrocarbons are gasified, and the gasified light hydrocarbons mixed with air gas enter the gas-liquid separator. After separation, it is dehydrated and fil...

Embodiment 2

[0034] Embodiment 2 Preparation of mixed gas

[0035] The biogas produced by the biogas project, the desulfurization and dehydration treatment and the light hydrocarbon mixed gas gas production are the same as in Example 1 to obtain CH 4Biogas and civil light hydrocarbon mixed air gas with a content of 60% are measured by a flow meter, respectively enter the biogas and light hydrocarbon pressure regulating and proportioning devices, and then are sent to the biogas hydrocarbon mixer assembly for mixing according to the 6:4 pressure regulating and proportioning ratio. Mixed to obtain biogas mixed gas, the combustion calorific value is 23.46MJ / m 3 , the density of the mixed gas is 1.401kg / m 3 , the relative density is 1.08, the Huabai number W=22.58MJ / m 3 . Composition test value of mixed gas (component content CV value): CH 4 is 36%, CO 2 24%, air 32.8%, iso-light hydrocarbons 7.2%. The explosion limit of mixed gas: the upper limit is 19.16%, the lower limit is 5.639%, a...

Embodiment 3

[0036] Embodiment 3 Preparation of mixed gas

[0037] The biogas produced by the biogas project, desulfurization and dehydration treatment and light hydrocarbon mixed air gas gas production are the same as in Example 1, and CH is obtained 4 Biogas and civil light hydrocarbon mixed air gas with a content of 60% are measured by a flow meter, respectively enter the biogas and light hydrocarbon pressure regulating and proportioning devices, and then are sent to the biogas hydrocarbon mixer assembly for blending according to the 2:8 pressure regulating and proportioning ratio. Mixed to obtain biogas mixed gas, the combustion calorific value is 25.40MJ / m 3 , the mixed gas density is 1.588kg / m 3 , the relative density is 1.23, the Huabai number W=22.90MJ / m 3 . Composition test value of mixed gas (component content CV value): CH 4 is 12%, CO 2 8%, air 65.6%, light hydrocarbons 14.4%. The explosion limit of mixed gas: the upper limit is 13.16%, the lower limit is 3.00%, and the...

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Abstract

The invention discloses biogas mixed gas and a production process thereof. The mixed gas takes biogas as a main gas source, light hydrocarbon-air mixed gas is taken as an auxiliary gas source, novel high-quality mixed gas is prepared by blending the main gas source and the auxiliary gas source according to certain proportions, and the mixed gas has a high burning calorific value which is equivalent to 6T natural gas. The mixed gas is new energy, effectively utilizes the existing large and medium-sized biogas engineering for realizing stable and centralized gas supply all the year round, and solves the current bottleneck in biogas development and utilization in rural areas. The production process of the mixed gas is as follows: the biogas produced by fermentation of the large and medium-sized biogas engineering is taken as the main gas source and mixed with the light hydrocarbon-air mixed gas, the two gas sources and a biogas-hydrocarbon mixing process are mature in technologies, the gas supply is stable and reliable and is not limited by regional conditions, the cost is reduced by about 50% on average, the production cost is lower than that of the natural gas, liquefied gas and the like, the production process is simple, and the mixed gas has great use values and development prospects.

Description

technical field [0001] The invention relates to a gas fuel, which belongs to the technical field of new energy, and in particular relates to a light hydrocarbon mixed-air gas made from biogas produced by a biogas project and by-products of the petrochemical industry, and a production process thereof. Background technique [0002] my country's modernization is concentrated in the modernization of cities and towns. At present, the proportion of my country's urban population has exceeded 50%, and urban residents are about 630 million. This means that China's urban population exceeds the rural population for the first time, and China's urbanization has entered a critical stage of development. It is estimated that in the next ten years, 100 million rural population in my country will realize urbanization, which will cause unprecedented great changes both in China and in the world...[Excerpt from "China Urbanization" China Urban Publishing House]. Urban modernization requires hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
Inventor 王建瓯李全德王二西李智军
Owner 王建瓯
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