Heat exchange device applied into kiln head hood of rotary kiln

A technology of heat exchange device and kiln hood, which is applied in the field of heat exchange devices, can solve the problems of thermal radiation, ineffective use of heat, waste, etc. Effect

Pending Publication Date: 2020-05-08
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The calcining temperature of the material in the rotary kiln reaches about 1250°C, and the temperature of the clinker in the kiln head cooler is about 800°C. A lar

Method used

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  • Heat exchange device applied into kiln head hood of rotary kiln
  • Heat exchange device applied into kiln head hood of rotary kiln
  • Heat exchange device applied into kiln head hood of rotary kiln

Examples

Experimental program
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Example Embodiment

[0029] Examples:

[0030] Such as figure 1 , figure 2 As shown, a heat exchange device used in the hood of a rotary kiln includes a fan 1, a lower gas collecting box 2, a radiant tube 3, an upper gas collecting box 4, valves, pipes and brackets.

[0031] There are three lower gas collecting boxes 2, the lower gas collecting box 2 is made of 0Cr18Ni9 material, the lower gas collecting box 2 is a rectangular box structure, and the upper surface is provided with a circular hole corresponding to the radiant tube 3. The diameter of the circular hole is the same as that of the radiant tube 3. The diameter is the same. The lower gas collecting box 2 is welded to the internal steel structure of the kiln head cover 8 through the lower bracket 71.

[0032] Fan 1 adopts Roots blower, the flow of Roots blower is 6000m 3 / h, arranged outside the lower gas collecting box 2, the fan 1 is connected to the main input pipe 61, the main input pipe 61 is divided into 3 input branches, each input branc...

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Abstract

The invention relates to the technical field of production of rotary kilns such as lime rotary kilns, cement rotary kilns and pellet rotary kilns, in particular to a heat exchange device applied intoa kiln head hood of a rotary kiln. The heat exchange device comprises lower gas collecting boxes, upper gas collecting boxes, radiant pipes and a fan; the lower gas collecting boxes and the upper gascollecting boxes are mounted in the kiln head hood of the rotary kiln and connected through the radiant pipes, and the two ends of the radiant pipes are connected with the lower gas collecting boxes and the upper gas collecting boxes correspondingly; and the fan is connected with the lower gas collecting boxes through input pipelines, and the upper gas collecting boxes are connected with output pipelines. Radiant heat in the rotary kiln and radiant heat of clinker in a cooler are collected, and the recovered heat can selectively heat flue gas of a coal grinding system or heat combustion-supporting air of a burner, so that the heat is effectively utilized.

Description

technical field [0001] The invention relates to the technical field of rotary kiln production of lime, cement, pellets, etc., and in particular to a heat exchange device used in the hood of the rotary kiln. Background technique [0002] As a common thermal equipment, rotary kiln is widely used in lime, cement, pellets and other industries. The rotary kiln generally uses high-temperature forced calcination to make the material react quickly. The kiln head cover is used to seal between the rotary kiln head and the cooling equipment. High temperature radiation, kiln hood shell is made of steel plate. The calcination temperature of the material in the rotary kiln reaches about 1250°C, and the temperature of the clinker in the kiln head cooler is about 800°C. A large part of the heat in the kiln head hood is not effectively utilized, resulting in waste, and at the same time, heat radiation affects the surrounding environment . [0003] Therefore, there is a need for a heat exc...

Claims

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Application Information

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IPC IPC(8): F27B7/38F27D17/00
CPCF27B7/38F27D17/004
Inventor 吕明潘中伟夏敬山
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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