Hot blast stove with double air cooling all metal structure

Abstract

The invention discloses a double-air-cooled metal structural hot-blast stove. The double-air-cooled metal structural hot-blast stove comprises a stove body; one end of the stove body is connected with a burner, and a hot smoke outlet is formed in the other end; the stove body adopts a double-cylinder structure, and consists of an inner cylinder and an outer cylinder; the stove body is provided with a circular cooling air primary joint at one end connected with the burner; the circular cooling air primary joint is communicated with the internal of the inner cylinder; the outer cylinder is provided with a circular cooling air secondary joint at one end near the burner; the circular cooling air secondary joint is communicated with a stove body sandwich layer consisting of the inner cylinder and the outer cylinder; and an air mixing device is arranged at one end in the stove body near the hot smoke outlet. The stove body of the hot-blast stove is an all-metal structure to achieve good tightness; the adjusting range of pressure in the stove body is wide; and the hot-blast stove can be horizontally or vertically arranged according to the field conditions.

Description

technical field [0001] The invention belongs to the technical field of hot blast stoves, in particular to a hot blast stove with double air-cooled all-metal structure. Background technique [0002] At present, activated carbon (activated coke) is mostly used in the sintering flue gas desulfurization and denitrification process of iron and steel enterprises. The regeneration of activated carbon (activated coke) in this process requires indirect heating with flue gas at about 500 ° C, and the flue gas temperature after heat exchange is about 340 ° C. In order to improve heating efficiency, the flue gas is usually circulated, such as figure 1 shown in . The main function of the hot blast stove is to reheat the circulating flue gas. Under this process, the furnace of the hot blast stove is operated under positive pressure. In order to prevent hot smoke from escaping, the overall sealing of this type of hot blast stove is required to be high. [0003] Activated carbon dry proc...

AI Technical Summary

Problems solved by technology

The hot blast stove usually adopts a full-lined structure, and the weight of the equipment is relatively large; the temperature of the combustion chamber is high, and the N0 generated by the high temperature X The volume is large; the circulating cooling air only enters the air mixing chamber directly through one or several nozzles to mix with the high-temperature flue gas, the uniformity of the air mixing is poor, a larger mixing space is required, and the equipment is larger

And the layout of the furnace can only be arranged horizontally, not suitable for vertical layout.

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