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Production of mixed urban gas with light-hydrocarbon gas and coal gas blending

A technology of mixing gas and production method, which is applied in the direction of mixing gas modification with other gases, fuel, gas fuel, etc., can solve the problems of limited calorific value, high toxicity, and high cost of coal gas production, and achieves hard coalescence and easy diffusion. , The effect of improving the kitchen environment

Inactive Publication Date: 2007-01-17
SHANGHAI LIANXIANG REAL ESTATE
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AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to provide an improved method for making urban mixed gas by mixing air-mixed light hydrocarbon gas with coal gas, which can overcome the problems of high cost, limited calorific value and high toxicity of coal gas in the prior art some deficiencies

Method used

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  • Production of mixed urban gas with light-hydrocarbon gas and coal gas blending
  • Production of mixed urban gas with light-hydrocarbon gas and coal gas blending
  • Production of mixed urban gas with light-hydrocarbon gas and coal gas blending

Examples

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Effect test

Embodiment 1

[0046] In a certain city, there were 100,000 households of pipe network gas users with the 5R standard of artificial gas. With the expansion of the urban area and the increase of population in recent years, the original artificial gas production can no longer meet the new users, and can only maintain the gas supply of the original users. It is estimated that it will grow to 200,000 households in 5 years, and the choice of light hydrocarbon mixed with artificial gas to increase heat and expand capacity will not only meet the gas supply of 200,000 households in 5 years, but also gradually expand the supply according to the speed of pipeline network expansion in the current situation capacity. Liquid light hydrocarbons are filtered through a 200-mesh filter and pressurized to 1.2kg / cm 2 ;Heating and vaporizing liquid light hydrocarbons in a heating vaporizer to a value greater than or equal to 0.6kg / cm 2 ; Flow metering mixes 4 parts of air with 1 part of light hydrocarbon gas, ...

Embodiment 2

[0059] A certain city originally used water gas as the main gas source of the city. It was built in the 1980s. There are three water gas generators with a diameter of 2.26 meters, two for use and one for backup, with a daily output of 60,000 m 3 Water gas, calorific value 2800Kcal / nm 3 , because the state did not have strict requirements on the calorific value of coal-based gas at that time, as long as more than 20,000 households in the urban area could use coal gas, with the reform and opening up, the development of the local economy, and since the construction of rural urbanization, urban expansion The number of users has increased to 50,000, and in 2008 the urban area will exceed 80,000.

[0060] If the municipal gas project is re-planned, the estimated investment in the gas plant will exceed RMB 60 million, and it is impossible for natural gas to enter in the near future.

[0061] Filter the liquid light hydrocarbons through a 200-mesh filter, and pressurize the mixed liq...

Embodiment 3

[0067] There are 100,000 households in a certain county, and there is no pipe network gas in the urban area. Residents mainly rely on LPG and coal for cooking. There is a chemical fertilizer factory 5 kilometers away from the county seat. The two-stage furnace used to produce nitrogen fertilizer increases hot water gas, and all the tail gas produced is released as boiler fuel. 3 / day, as raw material gas for nitrogen fertilizer plant, producing 15,000 M 3 The released gas is recycled into the gas storage tank, and all the gas in the upward blowing part is used as pipeline gas, and 113,900 M can be obtained every day 3 , calorific value 3140Kcal / nm 3 It can only be used by about 50,000 households, because the W17.2MJ / m 3 , CP86.48. W21.1~24.3MJ / m in 5R gas 3 . The range of CP55-96 is quite different.

[0068] Filter the liquid light hydrocarbons through a 200-mesh filter, and pressurize the liquid light hydrocarbons mixed at equal pressure by 1kg / cm 2 ;The liquid light h...

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Abstract

Production of urban mixed gas from mixed light hydrocarbon gas blended coal is carried out by filtering liquefied light hydrocarbon, pressurizing, heat vaporizing in heating vaporizer, mixing vaporized light-hydrocarbon gas with air or pressurized air in mixing chamber to form mixed light hydrocarbon, inspecting mixed light-hydrocarbon by oxygen inspector, storing in intermediate air tank, mixing coal-made air with mixed light hydrocarbon in mixing chamber to form mixed gas, inspecting mixed gas by oxygen inspector, storing in air tank, low or low-mediate pressure two-stage transfer distributing for mixed gas and entering into user terminal. It has less carbon monoxide content.

Description

Technical field: [0001] The invention relates to the technical field of city gas, in particular, it uses air-mixed light hydrocarbon as a heating agent and mixes various coal-based gas as city pipe network gas and a production method thereof. Background technique: [0002] In recent years, due to the increase in the price of hydrocarbon fuels, and in order to protect the environment, developed industrial countries require the use of clean fuels that emit trace amounts of harmful gases [0003] Premier Wen Jiabao of the State Council chaired an executive meeting of the State Council on June 30, 2004, at which the "Outline of Medium- and Long-Term Energy Development Plan (2004-2020)" was discussed and approved in principle. The core is to take the road of energy development with Chinese characteristics. At the study seminar held by the State Council on August 24, 2004, Premier Wen once again emphasized that the conservation and rational use of oil and gas resources should be p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K3/06
CPCC10L3/00
Inventor 陈兴曾张湘婷
Owner SHANGHAI LIANXIANG REAL ESTATE
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