System for conditioning through coking charge coal humidity difference

Abstract

The invention discloses a system for conditioning through the coking charge coal humidity difference. The system comprises an internal fluidized bed type drying and conditioning machine, a fluidized bed type dry-wet coal mixing conditioning machine, a deduster (8) and a granulator (9), the coking charge coal humidity difference conditioning machine is formed by the internal fluidized bed type drying and conditioning machine and the fluidized bed type dry-wet coal mixing conditioning machine, the internal fluidized bed type drying and conditioning machine deeply dehumdifies partial wet coal needing conditioning, and sends the dried partial coal to the fluidized bed type dry-wet coal mixing conditioning machine, and the dried partial coal and the other welt coal needing conditioning are subjected to hybrid conditioning in a fluidization state. The system has the advantages of simplified flow, reduced heat transfer and heating surfaces, simple structure, good interchangeability, convenient examination and maintenance, reliable operation, reliable and flexible conditioning control and adjustment, full and reasonable energy utilization, and reduction of the size of standby equipment of present conditioning systems.

Description

technical field [0001] The invention relates to the technical field of coking in the coking industry, in particular to a system for adjusting humidity by utilizing the humidity difference of coking furnace coal. Background technique [0002] Coal Moisture Control Technology (CMC) refers to the process of "moisture control of coking coal into the furnace". The purpose of reducing energy consumption in the coking process, ensuring the stability of coke oven operation, improving coke quality or increasing the amount of weakly caking coal, and reducing the amount of coking sewage. At the same time, the moisture content of the coking coal is reduced, and the bulk density of the coal is increased, which increases the coke output accordingly. [0003] With the development of coal humidity control technology in China, there are a variety of coal humidity control technology, mainly including multi-tube rotary drying with low-pressure steam as heat carrier and fluidized bed drying te...

AI Technical Summary

Problems solved by technology

If the flue gas is used as the heat carrier, the high-temperature flue gas needs to be transported for a long distance, the energy consumption of the large-volume high-temperature fan and the heat loss of the flue gas are large, and the flue gas flow rate is limited, the heat capacity is low, and the adjustability is poor.

Secondly, many independent coking enterprises in China use coke oven gas as the heat source for coke ovens, and the moisture content of the flue gas produced is high. Therefore, the humidity carrying capacity of the flue gas is low, which affects the dehumidification efficiency

The above-mentioned process technology mainly has problems such as high energy consumption of the device, low debugging ability, large basic investment, high operating cost, complicated control and adjustment, and large amount of operation and maintenance.

In the coal humidity control process, the above-mentioned humidity control technology has not reached the optimal use of heat input and recovery. In the process of humidity control, all coking furnace coal is subjected to humidity control, and a large amount of energy is invested.

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