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Method for fixing sulfur component in high-sulfur coal by using dolomite

A dolomite and sulfur coal-fired technology, applied in the direction of fuel, petroleum industry, fuel additives, etc., can solve the problems of rare reports and low sulfur fixation rate, and achieve the effects of easy availability of raw materials, high sulfur fixation rate, and convenient use

Inactive Publication Date: 2003-04-23
SHANXI COKING COAL GROUP +1
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Problems solved by technology

However, compared with the actual needs, its sulfur fixation rate is still low; and there are few reports on the specific information related to dolomite as a sulfur fixation agent.

Method used

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  • Method for fixing sulfur component in high-sulfur coal by using dolomite
  • Method for fixing sulfur component in high-sulfur coal by using dolomite
  • Method for fixing sulfur component in high-sulfur coal by using dolomite

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] The first embodiment is carried out under laboratory conditions. The first test step is to take 500 mg of an air-dried coal sample with a particle size of less than 0.2 mm and a sulfur content of 1.72%. According to GB / T 214-1996, the coal sample is analyzed by coulometric titration. Carried out high-temperature combustion to measure sulfur, and the amount of sulfur released after combustion was measured to be 1.72%. During the measurement process, the change data of combustion time and electrolytic power were recorded at the same time, and the electrolytic power was converted into sulfur release by calculation, and the sulfur released The relationship between the velocity and the amount of release over time is drawn as a graph (such as figure 1 and figure 2 solid line in ).

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Abstract

The method for fixing sulfur component in high-sulfur fuel wal by using dolomite includes the following steps: breaking dolomite to obtain broken dolomite whose grain size is below 3 mm, calcining for 3-4 hr. at 900-1000 deg.C pulverizing it to obtain dolomite powder material whose grain size is below 0.2 mm, according to 4-6 % and 2-4% of calcinatino-obtained material weight respectively mixing the pulverized dolomite with Al2O3 and Fe2O3, and adding them into high-sulfur fuel coal according to that its added amount is 5-6 times sulfur content being in fuel coal to make combustion together with fuel coal, so that the sulfur component can be fixed in coal cinder completely.

Description

technical field [0001] The invention belongs to coal-burning sulfur-fixing technology, and mainly relates to the technology of sulfur-fixing power high-sulfur coal. Background technique [0002] It is known that limestone, lime, and dolomite are used as sulfur-fixing agents in the combustion of thermal coal, which has less investment and is easy to operate, and has been widely used, and has been found in relevant patent documents. However, compared with the actual needs, its sulfur fixation rate is still low; and there are few reports about the use of dolomite as a sulfur fixer. Contents of the invention [0003] The technical problem to be solved by the present invention is to seek the preparation of the sulfur-fixing material mainly containing CaO and MgO and the method of using it to fix the sulfur in the burning coal with high sulfur content. [0004] The technical scheme adopted in the present invention is to uniformly mix the sulfur-fixing agent mainly containing Ca...

Claims

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Application Information

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IPC IPC(8): C10L10/00
Inventor 雒昆利李建胜尹家启秦斌青邱续发王五一王万冬郑艳芳赵淑梅李萍程黎花
Owner SHANXI COKING COAL GROUP
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