Method of realizing clean combustion of petroleum coke

A coke cleaning and petroleum coke technology, which is applied in the field of clean utilization of petroleum coke, can solve problems such as insufficient reaction, poor sulfur removal effect, large calcium carbonate, etc., and achieves reduced use cost, complete and sufficient sulfur removal reaction, and high specific surface area increased effect

Inactive Publication Date: 2007-03-21
汪景武
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Problems solved by technology

But in the existing method, the amount of calcium carbonate that needs to be added is very large, usually adds more than 5 times of the amount calculated according to the stoichiometric ratio of reacting with sulfur
Moreover, because in the traditional method, when calcium carbonate reacts with sulfur, calcium sulfate shells are easily formed on the surface, making it difficult for the calcium carbonate located in the center to further react with sulfur, so the reaction is difficult to be sufficient, and the sulfur removal effect is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take 5 kg of petroleum coke and firstly process it through high-pressure roller milling to crush the petroleum coke into a powder below 1-2 mm, then make the treated coarse powder into a slurry with a solid content of 68% with water, and then enter the ultra-fine cyclone The ultra-fine treatment in the mill becomes particles with an average particle size of less than 1 micron, and then put into the storage tank.

[0049] Take 1 kg of 200-mesh heavy calcium, adjust it into a slurry with a solid content of 65% with water, then enter it into an ultra-fine swirl mill for ultra-fine treatment, and then put it into a storage tank.

[0050] The petroleum coke slurry and the heavy calcium slurry are fully mixed in the swirl mill, burned through the combustion nozzle, and the SO in the flue gas is measured 2 The content is 92mg.

Embodiment 2

[0052] Take 5 kg of petroleum coke and first pass through high-pressure roller milling to crush the petroleum coke into a powder with a size of 1 to 2 mm, then add 1 kg of 200 mesh heavy calcium to the processed coarse powder, and adjust it with water to form a slurry with a solid content of 68%. shape, and then enter the ultra-fine swirl mill for ultra-fine treatment to become particles with an average particle size of less than 1 micron, and then put them into the storage tank. Combustion through combustion nozzles and measurement of SO in the flue gas 2 The content is 80mg.

Embodiment 3

[0054] Take 5 kg of petroleum coke and first pass through high-pressure roller milling to crush the petroleum coke into a powder with a size of 1 to 2 mm, then make the treated coarse powder into a slurry with a solid content of 50% with water, and add the chemical desulfurizer NaOH About 550 grams, then enter the ultra-fine swirl mill for ultra-fine treatment, and then put it into the storage tank.

[0055] The treated petroleum coke slurry is separated from solid and liquid by a centrifuge and washed three times with water. The separated and washed petroleum coke is then put into storage tanks.

[0056] The washed petroleum coke slurry is adjusted for solid content, burned through the combustion nozzle, and the SO in the flue gas is measured 2 The content is 2.1mg.

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Abstract

The present invention is method of realizing clean combustion of petroleum coke. The method includes the following steps: crushing petroleum coke with high pressure roller, adding water to form slurry, adding desulfurizer, and superfine treating. The present invention has submicron superfine technology and separating technology applied in the treatment of petroleum coke, and the treated petroleum coke with greatly increased specific surface area can raise the combustion efficiency greatly and raise the desulfurizing reaction rate greatly to realize the clean combustion of petroleum coke.

Description

technical field [0001] The invention relates to a technology for clean utilization of petroleum coke, in particular to a method for reducing the discharge of pollutants such as sulfur dioxide after petroleum coke is burned. Background technique [0002] Petroleum coke is the residual product of heavy residual oil after delayed coking or sulfurized coking. It is a combustible substance with high calorific value, high carbon content, low volatile matter and low ash. At present, petroleum coke is not directly used as a fuel because the sulfur content in it is too high, and a large amount of sulfur pollution will be generated during the combustion process. Due to the different sulfur content of crude oil, the sulfur content of petroleum coke is different. China mainly imports high-sulfur crude oil from the Middle East, so the sulfur content in the produced petroleum coke is also high and it is difficult to use it directly. At present, the general use in China is to use it to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C10L9/00
Inventor 汪景武毕舒
Owner 汪景武
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