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Method for quality conditioning of industrial combustion natural gas

A natural gas, quenching and tempering technology, applied in the petroleum industry, fuel, gas fuel and other directions, to achieve the effect of saving resources, wide control range and strong practicability

Inactive Publication Date: 2014-09-10
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the current large-scale development and long-distance transmission of coalbed methane and shale gas into the network will also face technical problems in gas source quality adjustment and supply stability

Method used

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  • Method for quality conditioning of industrial combustion natural gas
  • Method for quality conditioning of industrial combustion natural gas
  • Method for quality conditioning of industrial combustion natural gas

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Embodiment Construction

[0018] The blending target is to set natural gas, and the main body of blending is actual natural gas. The tempered gas used for blending includes liquefied petroleum gas, liquefied natural gas, dimethyl ether, pipeline natural gas, natural gas reformed gas, coke oven gas, water gas, mine gas, generator gas Coal gas, blast furnace gas, etc. are mixed with inert gas (flue gas, nitrogen, etc.) in order to meet the requirements of heat load. When the Wobbe number of the actual natural gas is lower than the Wobbe number of the set natural gas, use high calorific value gas (liquefied petroleum gas, liquefied dimethyl ether gas, liquefied natural gas, etc.) . When the Wobbe number of the actual natural gas is higher than the Wobbe number of the set natural gas, according to the conditions of the gas source, the gas with medium and low calorific value (pipeline natural gas, natural gas reformed gas, coke oven gas, water gas, mine gas, producer gas, etc.) can be selected. Coal gas, b...

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Abstract

The invention relates to a method for quality conditioning of industrial natural gas. When the actual wobbe index of natural gas is lower than a set wobbe index, conditioning gas and / or inert gas with a wobbe index higher than the set wobbe index of natural gas can be selected for blending; and when the actual wobbe index of natural gas is higher than a set wobbe index, conditioning gas and / or inert gas with a wobbe index lower than the set wobbe index of natural gas can be selected for blending. By controlling the wobbe index of natural gas and theoretical air requirement, the method can control the heat load capacity of natural gas combustion and the air-fuel ratio, thus being conducive to optimization and conditioning of a natural gas combustion utilization system, and enhancing the utilization efficiency of natural gas. With the characteristics of strong practicability, wide control range, flexibility and controllability, the method can make full use of the existing medium and low calorific value fuel gas, saves natural gas resources, mitigates the quality requirements for actual natural gas supplied to the upstream, also can solve air source quality adjustment during conventional combustible gas industrial application, and at the same time lowers the natural gas conditioning cost.

Description

Technical field: [0001] The invention relates to a method for conditioning and tempering industrial natural gas. By changing the combustion characteristics of natural gas (Wobbe number, calorific value), the requirements for setting natural gas are met. Background technique: [0002] At present, my country's natural gas is in a period of rapid development. It is estimated that by 2015, the consumption of natural gas will reach 240 billion cubic meters, which is about three times the gas volume in 2010. With the increase of natural gas supply, the amount of natural gas used for industrial combustion has increased significantly, especially the construction of natural gas-steam combined cycle power generation and heating equipment that adopts energy cascade utilization has begun to increase. There are many sources of natural gas in my country, and the gas quality varies greatly. However, natural gas-steam combined cycle power generation and industrial combustion devices have h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L3/10
Inventor 周理高文学罗勤王启刘文博项友谦
Owner PETROCHINA CO LTD
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