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Regular hexagon rotary cement kiln surface heat recovery device

A technology of heat recovery device and cement rotary kiln, which is applied in the field of waste heat recovery, can solve the problems of difficulty in manufacturing and installing water-cooled walls, short cold air travel, and short residence time, so as to reduce difficulty and cost, reduce equipment loss, and realize recycling Effect

Inactive Publication Date: 2013-05-29
山东省能源与环境研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only causes some difficulties in the manufacture and installation of the water wall, but also the cold air travels short and stays on the surface of the rotary kiln for a short time, so the heat transfer effect is poor, the heat recovery rate is low, and the effect is not good.

Method used

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  • Regular hexagon rotary cement kiln surface heat recovery device

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Embodiment Construction

[0011] As shown in the drawings, the surface heat recovery device of the regular hexagonal cement rotary kiln of the present invention includes an outer cover 4 and a water cooling wall 2, both of which are regular hexagonal. The water-cooled wall 2 is arranged on the periphery of the cement rotary kiln 3 , and there is a gap between the water-cooled wall 2 and the cement rotary kiln 3 , forming an inner ventilation channel 6 . The outer cover 4 is arranged on the periphery of the water-cooled wall 2 , and there is a gap between the outer cover 4 and the water-cooled wall 2 to form an external air passage 7 . The inner ventilation channel 6 and the outer ventilation channel 7 are connected. An upper vent 1 and a lower vent 5 are respectively arranged on the upper and lower sides of the outer cover 4, and the two air passages can be connected to a fan respectively, and cold air is sucked in through the lower vent 5, and hot air is discharged through the upper vent 1. The water...

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Abstract

The invention discloses a regular hexagon rotary cement kiln surface heat recovery device. The regular hexagon rotary cement kiln surface recovery device comprises a water-cooling wall and an outer cover, and is characterized in that the water-cooling wall and the outer cover are regular-hexagon-shaped, the water-cooling wall is arranged on the periphery of a rotary cement kiln, the outer cover is arranged on the periphery of the water-cooling wall, gaps are remained between the outer cover and the water-cooling wall and between the water-cooling wall and the surface of the rotary cement kiln to form an inner ventilating duct and an outer ventilating duct which are communicated, and the upper portion and the lower portion of the outer cover are respectively provided with a ventilating opening. Because the regular-hexagon-shaped outer cover and the regular-hexagon-shaped water-cooling wall are adopted, difficulties and costs are greatly reduced in the manufacturing and installment process. Air entering ventilating ducts forms backflow because of geometry reasons, not only ensures that heat-exchanging effects on the surfaces of the water-cooling wall and the rotary cement kiln are enhanced, stay time of the air inside the ventilating ducts is longer, and accordingly heat recovery effects are strengthened, and more heat is recovered, but also facilitates regular operations of the rotary cement kiln.

Description

technical field [0001] The invention relates to a device for recovering surface heat of a cement rotary kiln, belonging to the technical field of waste heat recovery. Background technique [0002] The cement industry has always been a high energy consumption and high pollution industry, so the traditional cement rotary kiln has great potential for energy saving. The surface temperature of the cement rotary kiln is very high when it is working, and most of the heat is lost in the form of radiation, which causes waste of energy and accelerated consumption of equipment. [0003] The shape of the existing heat recovery device on the surface of the cement rotary kiln is generally designed according to the shape of the cement rotary kiln. The water wall of the heat recovery device is circular or semicircular around the cement rotary kiln. This not only causes some difficulties in manufacturing and installing the water-cooled wall, but also the cold air travels short and stays on ...

Claims

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Application Information

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IPC IPC(8): F27B7/38F27D17/00
CPCY02P10/25
Inventor 程林杜文静
Owner 山东省能源与环境研究院
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