Horizontal type high-temperature hot-blast stove

Abstract

A kind of horizontal type high-temperature hot-blast stove, it includes a furnace body (6), a ball bed (4), a cold air opening (1) and a hot air opening (9). Combustion chambers (2) are respectively set on the left side and right side in the furnace body (6). And several burner guns (3) are set on the bottom of the furnace body (6) which locates on the lower part of the combustion chambers (2). The cold air opening (1) is set on the left side of the furnace body (6), and the hot air opening (9) is set on the right side of the furnace body (6), and the cold air opening (1) and the hot air opening (9) are respectively communicated with the combustion chambers (2) which are set on the left side and right side in the furnace body (6). The ball bed (4) is set in the middle part of the furnace body (6). The configuration of the two sides of the ball bed (4) is a checker brick configuration, and a manhole (5) is set on the top of the furnace body (6).

Description

BACKGROUND OF THE INVENTION[0001]This invention relates to a kind of horizontal type high-temperature hot-blast stove, a heat exchanger with super high air temperature achieved through high frequency heat exchange among coal gas, steam, air and other gas.[0002]Traditional hot-blast stove is usually installed with gas heat exchangers such as duplicate stove or ball stove. These stoves have lower efficiency, lower hot air (highest to 1250° C.), large size and high one-time investment. They are usually installed with low heat blast furnace consuming coal gas, and are hard to achieve high air temperature.BRIEF SUMMARY OF THE INVENTION[0003]This horizontal type high-temperature hot-blast stove is invented to further save energy, reduce the emission of carbon dioxide and other greenhouse gases. Especially, it is invented to meet the requirement of blast furnace and gas furnace technology which need high efficiency heat exchange among steam, coal gas, air and other gas.[0004]The solution f...

AI Technical Summary

Benefits of technology

[0009]1. Square burner guns are used for heating, which keeps the emission temperature of dust under 150° C., reduced fuel consumption and improved energy utilization.

[0010]2. The hot-blast stove in this invention not only can preheat air, but also can preheat coal gas or water vapor. It also can be used to preheat and reform other combustible gas.

[0011]3. The hot-blast stove in this invention can provide higher preheating temperature (1250-1450° C.).

[0012]4. The hot-blast stove in this invention is installed with smaller alumina balls with a diameter of 10-20 mm, so their volume and weight is 60-66% of those installed in traditional hot-blast stove, but the same heat exchange area is achieved. This reduced the size of furnace body, so the manufacturing cost of hot-blast stove is reduced.

[0013]5. This invention provides simple structure, low investment and high heat transfer efficiency. With this invention, it is easy to achieve high heat temperature using coal gas of low calorific value. The heat transfer efficiency can reach to 80%.

Problems solved by technology

), large size and high one-time investment.

They are usually installed with low heat blast furnace consuming coal gas, and are hard to achieve high air temperature.

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