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Method for eliminating sulphur in high sulfur petroleum coke combustion flue gas

A technology for high-sulfur oil and combustion flue gas, applied in separation methods, chemical instruments and methods, and separation of dispersed particles, can solve the problems of low desulfurization rate and large investment, and achieve SO2 reduction, reliable technology, and easy industrial implementation Effect

Active Publication Date: 2008-05-28
GUIZHOU BRANCH CHINA ALUMINUM IND
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Problems solved by technology

However, the above method requires new equipment, large investment, low desulfurization rate, and the absorption liquid needs to be reprocessed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 1000 grams of raw petroleum coke with a sulfur content of 4.5%, add 105 grams of zinc oxide powder, the particle size is less than 0.074 mm, and mix evenly. The petroleum coke is ground and sprayed into the boiler for combustion. After the petroleum coke was burned, the ash was collected. After analysis, the sulfur content in the ash was about 40.31 grams, mainly in the form of zinc sulfide. Compared with the blank sample, SO in flue gas 2 The content decreased by 89.58%.

Embodiment 2

[0018] Take 1000 grams of raw petroleum coke with a sulfur content of 5.5%, add 125 grams of zinc oxide powder, the particle size is less than 0.074mm, mix evenly, grind the petroleum coke and spray it into the boiler for combustion. After the petroleum coke was burned, the ash was collected. After analysis, the sulfur content in the ash was about 48.27 grams, mainly in the form of zinc sulfide. Compared with the blank sample, SO in flue gas 2 The content decreased by 87.76%.

Embodiment 3

[0020] Take 1000 grams of raw petroleum coke with a sulfur content of 7.0%, add 155 grams of zinc oxide powder, the particle size is less than 0.074 mm, and mix evenly. The petroleum coke is ground and sprayed into the boiler for combustion. After the petroleum coke was burned, the ash was collected. After analysis, the sulfur content in the ash was about 60.37 grams, mainly in the form of zinc sulfide. Compared with the blank sample, SO in flue gas 2 The content decreased by 86.24%.

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Abstract

A method for eliminating sulfur in high sulfur refinery coke flue gas relates to a method of desulfurating flue gas of high sulfur refinery coke used for combustion instead of burning coal in industries of metallurgy, electricity generation and cement, the method is characterized in that the combustion is carried out after an arbitrary desulfurizer of zinc oxide, calcium carbonate and cupric oxide are mixed into the high sulfur refinery coke. The method has the advantages that the technique is reliable; the processing cost is low; the operation is convenient; the industrial implement is easy; the precipitation amount of SO2 in the refinery coke can be reduced by more than 85%.

Description

technical field [0001] A method for eliminating sulfur in high-sulfur petroleum coke combustion flue gas relates to a flue gas desulfurization method for replacing high-sulfur petroleum coke used in coal combustion in metallurgy, power generation and cement industries. Background technique [0002] Petroleum coke is a by-product of the cracking of raw oil in delayed coking unit at high temperature to produce light oil. The output of petroleum coke is about 25%-30% of raw oil. Its low calorific value is about 1.5-2 times that of coal, its ash content is about 0.5%, its volatile matter is about 11%, and its quality is close to that of anthracite. The quality of petroleum coke is greatly affected by the quality of crude oil. With the increase of my country's imported crude oil, the sulfur content of petroleum coke in my country is on the rise. Some enterprises that process imported high-sulfur crude oil have a sulfur content of petroleum coke as high as 7%. [0003] High-sul...

Claims

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Application Information

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IPC IPC(8): B01D53/50
Inventor 陈喜平李旺兴
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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