Lime kiln air inlet system

A technology of air intake system and lime kiln, which is applied in the field of iron and steel production, can solve the problems of increasing procurement costs and operating costs, increasing the operating power of combustion-supporting fans, and lime nodules, so as to reduce procurement costs and operating costs and avoid lime nodules , Improve the effect of product quality

Pending Publication Date: 2018-12-28
盐城市联鑫钢铁有限公司
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Problems solved by technology

[0002] Lime kiln, as a kind of equipment for calcining limestone at high temperature to form active lime, is widely used in the field of iron and steel smelting production technology. The lime kiln in the prior art generally uses the exhaust gas of the lower suction beam as the inlet air of the combustion-supporting fan. After heat exchange with the temperature-regulating fan and the waste gas from the kiln body, it enters the combustion beam burner for recycling. In this way, the oxygen conten

Method used

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  • Lime kiln air inlet system
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[0013] The lime kiln air inlet system includes a lime kiln, an air inlet device and a heat exchanger. The lime kiln includes a kiln body 1, a lower suction beam 2, a combustion beam 3, and a kiln body exhaust gas discharge port 4. The combustion beam is provided with There is a combustion beam burner, the lower suction beam is provided with a lower suction beam exhaust gas discharge port, and the air inlet device includes a combustion-supporting fan 8. The air introduced by the combustion-supporting fan passes through the heat exchanger and the exhaust gas of the lower suction beam and the kiln body The exhaust gas enters the combustion beam burner after heat exchange.

[0014] Further, the heat exchanger includes a first heat exchanger 5 and a second heat exchanger 6, the first heat exchanger is provided with a kiln body waste gas inlet and a kiln body waste gas outlet, and the second heat exchanger is provided with a total waste gas Inlet, total exhaust gas outlet, combustion-s...

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Abstract

The invention relates to the technical field of steel production and in particular relates to a lime kiln air inlet system which comprises a lime kiln air inlet system, wherein the lime kiln air inletsystem comprises a lime kiln, an air inlet device and a heat exchanger; the lime kiln comprises a kiln body, a lower air sucking beam, a combustion beam and a kiln gas discharge hole; the combustionbeam is provided with a combustion beam burner; a lower air sucking beam waste gas emission hole is formed in the lower air sucking beam; the air inlet device comprises a combustion promotion fan; airintroduced by the combustion promotion fan is subjected to heat exchange with a lower air sucking beam waste gas and a kiln gas and is fed into the combustion beam burner. By adopting the system provided by the invention, requirements of the combustion beam burner on air inlet temperatures can be met, the temperature of the waste gas can meet the requirement on inlet temperatures of a dust collector, no extra temperature adjusting fan for reducing the temperature of the waste gas is needed, and the system is low in cost and free of lime scaffolding.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a lime kiln air intake system. Background technique [0002] Lime kiln, as a kind of equipment for calcining limestone at high temperature to form active lime, is widely used in the field of iron and steel smelting production technology. The lime kiln in the prior art generally uses the exhaust gas of the lower suction beam as the inlet air of the combustion-supporting fan and then After heat exchange with the temperature-regulating fan and the waste gas from the kiln body, it enters the combustion beam burner for recycling. In this way, the oxygen content in the gas entering the combustion beam burner is relatively low and contains a certain amount of dust, which is easy to cause lime kiln Periodic suspended materials, namely the formation of lime nodules, not only increases the operating power of the combustion-supporting fan, but also requires an additional t...

Claims

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Application Information

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IPC IPC(8): C04B2/10
CPCC04B2/10
Inventor 谢锦官陈春荣谢吉祥曾锦刁承民陈小平刘燊吴从方
Owner 盐城市联鑫钢铁有限公司
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