Quenching technique of gas-phase chemical reduction method

Abstract

A quenching technique of a gas-phase chemical reduction method involves a red coke conveying unit, a quenching furnace unit and a coke output and screening unit, and is technically characterized in that the steam inlet of the lower portion of the quenching furnace unit is connected with the steam outlet of a steam conveying unit, the steam inlet of the steam conveying unit is communicated with the steam outlet of a steam generating unit, the high-temperature gas inlet of the quenching furnace unit is communicated with the mixed gas inlet of a cooling unit sequentially through a heat exchange unit and a purifying unit, the water gas outlet of the cooling unit is communicated with a gas collecting unit, and the waste water outlet of the cooling unit is communicated with a sewage recovery unit.By means of the method, hot coke and steam chemically react, one part of sensible heat of coke is converted into sensible heat of mixed gas, the other part of sensible heat of coke is converted into chemical energy, the utilization efficiency of energy in the quenching process is improved, and the aims of reducing the comprehensive production cost of coke making enterprises, saving energy and achieving CO2 emission reduction are achieved.

Description

technical field [0001] The invention belongs to the technical field of coke quenching, and in particular relates to a coke quenching process realized by steam-phase chemical reduction. Background technique [0002] At present, there are mainly two coke quenching methods in coking enterprises in my country, namely wet coke quenching and dry coke quenching. [0003] The wet coke quenching process is relatively simple, mainly composed of three parts: coke quenching car, coke quenching tower and coke drying platform. The coke produced in the coke oven is introduced into the coke quenching car by the coke stopping car, and then enters the lower part of the coke quenching tower under the traction of the electric locomotive, and contacts with the water sprayed from the upper part of the tower top to extinguish the red coke, and is sent to the sieve after further coke drying focal device. The exhaust gas from coke quenching is discharged after dust removal by the wooden baffle on ...

AI Technical Summary

Problems solved by technology

Although wet coke quenching has great advantages in terms of investment and technology, it is at a disadvantage in the other three items. It has gained huge economic benefits on the basis of sacrificing energy saving, environmental protection and product quality, and wet coke quenching is only applicable to Areas with relatively abundant water resources

Although the dry coke quenching has certain advantages in energy saving, environmental protection and coke quality, it is only compared with the wet coke quenching process, but the dry coke quenching requires huge economic investment and is not suitable for small-scale of coking enterprises

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