Vertical cold kiln uniform in heat exchange

Abstract

The invention discloses a vertical cold kiln uniform in heat exchange, which comprises a kiln body, wherein the kiln body comprises an upper conical shell and a lower conical shell which are located on the lower portion, the upper conical shell and the lower conical shell are inserted together in a sleeved mode, a gap is reserved between the upper conical shell and the lower conical shell, the interior of the kiln body comprises a buffering cavity and a cooling cavity, the buffering cavity is located above the cooling cavity, and the cooling cavity is located above the upper conical shell; a charge hole is formed in the top end of the kiln body, an exhaust channel is arranged on the outer side of the upper portion of the kiln body and communicated with the cooling cavity, and an air outlet is formed in the end part of the exhaust channel; a discharge hole is formed in the bottom end of the kiln body, an air distribution channel is arranged outside the lower portion of the kiln body, and an air inlet is formed in the end part of the air distribution channel; a cross-shaped air channel is arranged in the kiln body, and the air distribution channel is communicated with the cross-shaped air channel. The uniform distribution problem of sinter and cooling gas in the vertical cold kiln can be solved, the heat exchange uniformity is ensured, the cooling effect is improved, and the sinter waste heat recovery efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of sinter cooling devices, in particular to a vertical cooling kiln with uniform heat exchange. Background technique [0002] The sintering process is a process in which various powdery materials, flux and fine coke are mixed and granulated, and then put into the sintering machine to complete the sintering reaction, so that the powdery materials are transformed into block materials. After sintering, the sintered ore needs to be cooled before entering the next process, and at the same time, the sensible heat of the sintered ore can be recovered for effective use. The vertical cooling kiln is a device for sinter cooling and waste heat recovery. The overall heat exchange process in the vertical cooling kiln is countercurrent heat exchange. The sinter particles are fed into the kiln body from the material tank from above, and then enter the cooling chamber and the cooling chamber after being buffered. The cold ...

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Problems solved by technology

[0004] In order to solve the problem of uneven distribution of sinter and cooling gas in the vertical cooling kiln, which leads to poor heat exchange effect, the purpose of this invention is to provide a gas-solid two-phase Vertical cooling kiln with full contact, good heat transfer effect and high heat recovery efficiency for uniform heat transfer

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