European metallurgical cloth bag ash-collecting storehouse high-temperature ash cooling device

Abstract

The invention discloses a European metallurgical cloth bag ash-collecting storehouse high-temperature ash cooling device. The European metallurgical cloth bag ash-collecting storehouse high-temperature ash cooling device comprises a cooling device body; the middle part of the cooling device body is cylindrical; the two end faces of the cooling device body are conical; closed partition plates are arranged in the two ends of the cooling device body correspondingly; ash conveying pipes are horizontally arranged between the closed partition plates at intervals; the adjacent ash conveying pipes arearranged in an equilateral triangle mode; the two ends of the cooling device body are connected with an ash inlet pipe and an ash outlet pipe correspondingly; a cooling medium inlet is formed in thetop surface of the cooling device body and near the ash inlet pipe; a cooling device outlet is formed in the bottom surface of the cooling device body and near the ash outlet pipe; deflection bafflesare arranged in the cooling device body at intervals in an up-and-down staggered way; and the top surface or the bottom surface of each deflection baffle is provided with an arc-shaped notch. The European metallurgical cloth bag ash-collecting storehouse high-temperature ash cooling device can reduce the ash temperature, can meet the ash discharging temperature requirement of a sucking and discharging tank truck when the ash temperature is high, enables the ash in an ash collecting storehouse to be eliminated timely and avoids ash leakage caused by damage to a high-ash-level ash-collecting storehouse cloth bag.

Description

technical field [0001] The invention relates to a high-temperature ash cooling device for a bag ash collection bin of an Ouyeel furnace. Background technique [0002] The predecessor of Ouye Furnace was COREX Furnace, which was renamed Ouye Furnace after it was moved from Baosteel Luojing to Bayi Steel. In order to realize the function of energy saving and environmental protection, Ouyeel Furnace transformed the top gas packing scrubber and adjustable venturi scrubber into a gravity dust removal and dry dust removal system. The dry dedusting gas purification process is used to replace the original COREX shaft furnace gas wet dedusting process. Compared with the COREX furnace, Ouyeel furnace has a new breakthrough in the use of raw fuel. The fuel mainly uses the production process of coke + fine coal + injected bituminous coal. To increase the amount of gas generated, because the volatile content of coal is higher than that of coke, the coal ratio is higher and the coke rati...

AI Technical Summary

Problems solved by technology

The dry dedusting gas purification process is used to replace the original COREX shaft furnace gas wet dedusting process. Compared with the COREX furnace, Ouyeel furnace has a new breakthrough in the use of raw fuel. The fuel mainly uses the production process of coke + fine coal + injected bituminous coal. To increase the amount of gas generated, because the volatile content of coal is higher than that of coke, the coal ratio is higher and the coke ratio is lower, which leads to more unburned coal powder in the furnace, which leads to a higher dust content in the raw coal gas. At the same time, in order to increase the smelting rate of Ouye furnace, it is necessary to increase the metallization rate of the shaft furnace. The shaft furnace uses CO to reduce iron oxide. The metallization rate of the shaft furnace is high. The higher the top gas temperature is, the higher the smelting intensity is. As a result, the top temperature of the shaft furnace is 80-120°C higher than that of the blast furnace with the same equipment

The working load of the bag filter of Ouyeel Furnace increases, resulting in an increase in the ash temperature and ash volume of the bag ash

A large amount of high-temperature ash is stored in the ash collection bin. If it is not emptied in time, the cloth bag in the ash collection bin will be ejected after the ash collection bin reaches a high material level, which will destroy the ash stored in the ash collection bin and cause the discharge of the ash collection bin. Particles seriously exceed the standard and are thick black, which affects environmental protection

Since the ash discharge of the ash collection bin adopts the suction and discharge tank truck, it has lower requirements on the ash temperature of the ash collection bin. Therefore, when the ash temperature is high, the ash collection bin cannot be discharged, which affects the normal production of the bag filter.

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