A coke quenching tower waste heat recovery system

Abstract

The invention discloses a coke quenching tower waste heat recovery system, which includes a water inlet pipeline, a coke quenching tower and a water outlet pipeline; the water inlet pipeline includes a water supply pipeline and a cleaning water pipeline; the coke quenching tower includes a waste heat recovery device, cleaning pipe and induced draft fan; the first end of the water supply pipeline is the water supply inlet, and the end of the water supply pipeline is connected to one end of the waste heat recovery device; the first end of the cleaning water pipeline is the cleaning water inlet, and the The end of the cleaning water pipeline is connected to the cleaning pipe; the head end of the water outlet pipeline is connected to the other end of the waste heat recovery device, and the end of the water outlet pipeline is a hot water outlet. The invention solves the problems of a large amount of heat recovery and dust removal during coke quenching in a coke quenching tower of a coke plant. By recovering the heat in the steam, the utilization rate of energy is improved, and the emission of dust is reduced, which achieves the dual indicators of energy saving and environmental protection, and has both economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of coking production heat energy, and in particular relates to a coke quenching tower waste heat recovery system. Background technique [0002] With the proposal of a harmonious society and sustainable development strategy, environmental pollution and clean and efficient use of resources have become the primary concerns of people. In my country's energy structure, coal occupies a dominant position, and the clean and efficient utilization of coal has become the top priority of the development of modern society, which is of great significance to the realization of my country's high-efficiency, energy-saving and environmentally friendly production. Coal pyrolysis is the basis of clean coal utilization and an important step in coal gasification, liquefaction, refining and other processes, which can produce semi-coke (also known as semi-coke), coal tar and raw coal gas. [0003] Howe...

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Problems solved by technology

[0003] However, as far as the current coke production process is concerned, the coke will have a high heat after it is released from the furnace, that is, the coke is in a state of redness and heat, and it needs to be cooled and quenched by water sprayed in the coke quenching tower. A large amount of saturated steam and dust will be produced. The saturated steam has heat. If the saturated steam is discharged into the atmosphere through the chimney of the quenching tower, the heat of the saturated steam will be wasted. At the same time The process of converting coke quenching saturated steam into liquid water still requires a certain heat exchange process of circulating water

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