A converter flue gas high temperature cyclone dust removal waste heat boiler integrated device and method

Abstract

The invention relates to a converter flue gas high-temperature cyclone dust removal waste heat boiler integrated device and method, belonging to the converter flue gas waste heat boiler technical field. The technical solution is: the multi-stage heat exchange unit is composed of A-type heat exchange unit (5), B-type heat exchange unit and C-type heat exchange unit (9) arranged sequentially from top to bottom, and the steam and hot water pipes of the heat exchange unit (4) and one end of the softened water pipe (18) are respectively connected to the water inlet and outlet of the steam drum (14), and the other ends of the steam hot water pipe (4) and the softened water pipe (18) of the heat exchange unit are respectively connected to the multi-stage heat exchanger Thermal unit connection. The invention has beneficial effects: no water is sprayed during the whole process, the total recovery of converter flue gas is increased, energy saving and environmental protection; the structure is reasonable and convenient for repair and maintenance, heat energy is recovered synchronously, the efficiency is high, the power of the fan is reduced and the maintenance and repair are saved, and manpower and material resources are saved.

Description

Technical field [0001] The present invention relates to apparatus and method for integrally converter waste heat boiler flue gas temperature cyclone, belonging to the boiler flue gas waste heat converter technical field. Background technique [0002] Converter Flue characteristics are: high temperature, high dust, high and C0 continuous production. Currently, the flue gas is cooled from the converter 1000--800 deg.] C to about 170--200 deg.] C, water is widely used at home and abroad, spray cooling high temperature flue gas treating process converter (temperature between 1000-170 ℃), consumption a lot of valuable water resources, and the converter flue gas recovery process complexity, low efficiency, equipment failure rate is high, the cost of maintenance and repair of large, excessive emissions, resulting in flue gas heat converter and converter slag (very good industrial raw materials) activity loss, wasted. Chinese invention patent: a converter for a high temperature heat reco...

AI Technical Summary

Problems solved by technology

At present, the converter flue gas is cooled from 1000--800°C to about 170--200°C. Water spraying and atomization cooling converter high-temperature flue gas treatment processes (temperature between 1000-170°C) are commonly used at home and abroad. A large amount of precious water resources, and the converter flue gas recovery process is complex, low efficiency, high equipment failure rate, high maintenance and repair costs, excessive emissions, resulting in loss of activity of converter flue gas heat and converter ash (very good industrial raw materials), waste

Chinese invention patent: a waste heat boiler (ZL201621034214.1) for waste heat recovery from converter high-temperature flue gas and a high-temperature and high-efficiency heat exchanger (ZL201921488761.0). Equipped with a cyclone dust collector, it is difficult to arrange the waste heat boiler and the cyclone dust collector at the same time due to the limited site and space of the steelmaking converter

To sum up, the problems in the prior art are: complex equipment structure, inconvenient installation and maintenance, and low thermal efficiency; once a failure occurs, the continuous casting production of the converter will be directly affected due to the long maintenance cycle, resulting in great economic losses

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