A uniform flow hot blast stove in which premixed air nozzles communicate with each other and the supply air flow flows in a labyrinth

Abstract

The invention relates to a flow equalizing hot blast heater with premix air flow nozzle interconnection and air supply flow curved flowing. A combustor wall body is connected with a burner wall body; the burner wall body is supported on a regenerative chamber wall body; the upper part and the middle part of the regenerative chamber wall body are inserted into a burner; a gas inlet pipe and an air inlet pipe on the burner wall body are connected to a gas distribution circuit and an air distribution circuit; a gas main nozzle and an air main nozzle on the gas distribution circuit and the air distribution circuit are communicated with an air flow premixing nozzle passage; a premixing air adjusting nozzle is arranged at the top of the air flow premixing nozzle passage; a communication passage is arranged on the air flow premixing nozzle passage; a hot air outlet pipe is arranged on the combustor wall body; the lower part of the regenerative chamber is built on the hot blast heater bottom in a masonry manner; a casting grate is arranged on support columns at the hot blast heater bottom; a heat accumulator is arranged on the casting grate; a flue gas outlet pipe and a cold air inlet pipe are arranged on the regenerative chamber wall body at the lower part of the casting grate. The flow equalizing hot blast heater has the advantages of high efficiency, high heat strength and high air supply temperature, saves fuel, and reduces waste gas temperature and the emission of harmful gas.

Description

technical field [0001] The invention relates to a hot blast stove, in particular to a uniform flow hot blast stove in which a premixed air flow nozzle communicates with a meandering air supply air flow for providing high-temperature blast for heat utilization equipment. Background technique [0002] At present, from the perspective of energy saving and consumption reduction, hot blast stoves require high performance and high air temperature under the combustion of low calorific value blast furnace gas, and finally achieve the goals of high efficiency, energy saving, environmental protection, and increased production. For this reason, an optimized combustion process must be combined with an enhanced heat transfer process in the hot blast stove. This involves the structure of the combustion device, the structure and arrangement of the heat storage body, and the organization of the air flow field. Throughout the various blast furnace hot blast stoves currently in use, the gas ...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an even-flow hot blast stove in which the nozzles of the pre-mixed air flow communicate with the meandering flow of the air supply air flow, which can effectively solve the problem of low gas and air mixing rate, uneven mixing, and combustion intensity. Low temperature, low combustion temperature, incomplete combustion, and uneven air distribution in the regenerator during the air supply process

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