Foam coke-quenching method

Abstract

The invention belongs to the technical field of coking, in particular to a foam coke-quenching method. The method comprises the following steps of: 1, dissolving a foam coke-quenching addition agent composed of an anionic surfactant, rare earth salt, amine salt and a stabilizing agent into water to be prepared into a water solution with concentration of 5-20%; 2, putting the high-concentration water solution in the step one into a coke-quenching water pool in a set proportion to enable water in the coke-quenching water pool to become a water solution with concentration of 0.01-0.1%; and 3, pumping the low-concentration water solution in the step two into a sprayer to be sprayed on high-temperature red cokes, stopping spraying till the coke temperature is dropped below 200 DEG, and completing coke quenching. When the water solution with concentration of 0.01-0.1% containing the foam coke-quenching addition agent is used for replacing common water for coke quenching, the surface of the high-temperature red cokes can form a layer of gas film, therefore water does not directly contact with the high-temperature red cokes, physical shock damage and chemical activation damage of the water to the high-temperature red cokes are avoided, the coke quality can be greatly increased, and the emission of harmful dust is reduced.

Description

technical field [0001] The invention belongs to the technical field of coking, and further belongs to a coke quenching technology. Background technique [0002] The current coke quenching methods include dry coke quenching and water coke quenching. CDQ uses nitrogen and other inert gases to cool coke. It has the effect of improving coke quality and energy saving and environmental protection. It is an advanced coke quenching method, but due to high equipment cost And high operating costs are generally unbearable for coking plants. Water coke quenching uses ordinary water as the coke quenching medium, and is the most widely used coke quenching method at present. Its advantages are low equipment cost and low operating cost; Harmful vapors of benzene, phenol, cyanide, sulfide and dust are discharged into the atmosphere, causing serious environmental pollution. Although there is currently a method of adding a passivating agent to the coke quenching water, the addition of a pass...

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Problems solved by technology

[0002] The current coke quenching methods include dry coke quenching and water coke quenching. CDQ uses nitrogen and other inert gases to cool coke. It has the effect of improving coke quality and energy saving and environmental protection. It is an advanced coke quenching method, but due to high equipment cost And the high operating cost is unbearable for general coking plants

Water coke quenching uses ordinary water as the coke quenching medium, and is the most widely used coke quenching method at present. Its advantages are low equipment cost and low operating cost; Harmful vapors of benzene, phenol, cyanide, sulfide and dust are discharged into the atmosphere, causing serious environmental pollution

Although there is currently a method of adding a passivator to the coke quenching water, the addition of a passivator can only increase the thermal strength of the coke a little, and it is helpless in other aspects

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