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Method and apparatus for combustion replacing oil with coal

A technology of combustion method and equipment, applied in the direction of combustion method, combustion equipment, fluidized bed combustion equipment, etc.

Inactive Publication Date: 2008-12-17
黄钟成 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the combustion method and equipment that use coal to make gas instead of fuel oil for thermal recovery of heavy oil, that is, this type of technology is still in the research and development stage

Method used

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  • Method and apparatus for combustion replacing oil with coal

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Embodiment

[0045] In this embodiment, two American-made SG50-NDS-26 oil-fired steam-injection boilers are transformed to burn low calorific value hot gas, so as to implement the combustion method of replacing oil with coal according to the present invention.

[0046] Specifically, according to a preferred embodiment, the coal-substituted oil combustion method of the present invention is implemented through the following stages:

[0047] Briquette preparation

[0048] Using pulverized coal with an ash content of 16wt% from Datong Coal Mine in China as raw material, it was first pulverized to a particle size below 3mm using a PX-64 impact crusher; then 3wt% coal ash fusibility regulator was added to it , so that the difference between the deformation temperature DT and the softening temperature ST of the briquette is about 250°C; then add 6wt% of binder to it, and the resulting mixture is uniformly mixed by SH-10 type twin-shaft mixer, and passed through Stir with ST-10 vertical mixer to ...

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Abstract

The invention provides a burning method using coal as substitute of oil, which comprises following steps: coal gasification, coal gas burning, and optional coal gas purification, gas waste heat utilization and gas emission. The invention also provides burning equipment using coal as substitute of oil. The burning equipment can reduce the fuel cost by about 4 / 5, and can save petroleum and natural gas resources. Additionally, the burning method and the equipment have the advantages of good reliability, high heat efficiency, high automation level, high return on investment and good environmental benefit.

Description

technical field [0001] The present invention relates to a combustion method of substituting coal for oil, in particular to a combustion method for substituting coal for oil in steam injection boilers or heating furnaces for thermal recovery of heavy oil, and also relates to a combustion method for substituting coal for oil for implementing the method equipment. Background technique [0002] In my country's fossil fuel reserves, coal accounts for 96.7%, oil accounts for 1.6%, and natural gas accounts for 1.7%. Therefore, the proportion of coal in my country's energy consumption composition has always been around 70%. Due to insufficient oil and natural gas resources, my country has changed from an oil exporter to an oil importer since 1993, and the import volume has increased year by year. In 2007, my country's net oil import volume reached 177.57 million tons. [0003] At present, my country's oil extraction, glass, ceramics, machinery and other industries mainly use petrol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23B90/00F23D14/00C10J3/02
CPCC10J3/20C10J3/34C10J3/76C10J2300/093C10J2300/0956C10J2300/0976C10K1/024C10K1/026F23C10/002F23D14/22F23D14/66F23J15/006F23J2217/101F23J2217/102Y02E20/34Y02P20/129
Inventor 黄钟成王佩兰黄志刚
Owner 黄钟成
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