Cement rotary kiln barrel radiation, reclaiming and utilizing device

A cement rotary kiln and rotary kiln technology, which is applied in the field of recovery and utilization of heat from the rotary kiln cylinder used for cement calcination, can solve the problem of low waste heat utilization efficiency, and achieve the effects of strong practicability, energy saving and obvious economic benefits

Active Publication Date: 2008-10-22
天津健威泽节能环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a heat dissipation recovery and utilization device for cement rotary kiln shell, which can effectively solve the problem of low efficiency of waste heat utilization of rotary kiln shell in the current cement industry

Method used

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  • Cement rotary kiln barrel radiation, reclaiming and utilizing device
  • Cement rotary kiln barrel radiation, reclaiming and utilizing device
  • Cement rotary kiln barrel radiation, reclaiming and utilizing device

Examples

Experimental program
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Effect test

Embodiment 1

[0033]Use demineralized water or demineralized water as the heat exchange medium, and directly produce low-temperature and low-pressure (0.2-0.3Mpa, 150-170°C) steam with a certain degree of superheat after passing through the heat exchange cover. The steam is used as pure low-temperature waste heat power generation in cement plants. The supplementary steam enters the supplementary steam port of the steam turbine to drive the turbine to rotate and drive the generator to generate electricity; or all produce low-temperature and low-pressure saturated steam, which enters the low-temperature and low-pressure steam section of the pure low-temperature waste heat power generation boiler in the cement plant, and is used for power generation after being superheated by the boiler. The production of low-temperature and low-pressure steam in the heat exchange chamber is allowed by the strength of the rotary kiln shell.

[0034] The cement rotary kiln shell heat dissipation recycling device...

Embodiment 2

[0046] In this embodiment, the heat transfer oil is used as the heat exchange medium, and the heat transfer hood is used to exchange heat on the surface of the rotary kiln shell through the heat transfer oil in the form of forced circulation. The heat transfer oil after heat exchange is directly introduced to the energy conversion device for heating and so on.

[0047] The cement rotary kiln shell heat dissipation recycling device includes the rotary kiln shell 1, the upper section of the rotary kiln shell 1 is provided with a heat exchange cover 2, and the heat exchange cover 2 is made of steel plates. Two semi-cylindrical bodies are connected by flanges Finally, the rotary kiln shell 1 is wrapped. The outer surface of the heat exchange cover 2 is provided with an insulating layer 21 to prevent heat loss. There is a sealing device between the two ends of the heat exchange cover 2 and the rotary kiln shell 1. The inner surface of the heat exchange cover 2 and the outer surfac...

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Abstract

The invention discloses a device for recycling heat radiated from a rotary cement kiln shell body, comprising a plurality of heat transfer covers arranged on the upper section of the rotary cement kiln shell body. Each of the external surfaces of the heat transfer covers is provided with an insulating layer, sealing equipment is arranged between the two ends of the heat transfer covers and the rotary cement kiln shell body, a sealing heat transfer cavity is formed by the inner surfaces of the heat transfer covers and the external surface of the rotary kiln shell body via the sealing equipment, the bottom of the heat transfer covers is provided with an inlet which is communicated with the heat transfer cavity, the top of the heat transfer covers is provided with an outlet which is communicated with the heat transfer cavity, the bottom of the heat transfer covers is connected to a slip fitting so as to realize the axial displacement. The sealing equipment comprises a permanent seat on the external surface of the rotary cement kiln shell body, and one side of the permanent seat is provided with a dynamic sealing ring; the bottom of the dynamic seal ring is hermetically connected to the rotary cement kiln shell body by a temperature resistant rubber I, and a self-propelling stationary seal ring is arranged between the dynamic seal ring and the head face of the heat transfer cover; the top of the self-propelling stationary seal ring is hermetically connected to the head face of the heat transfer cover by a temperature resistant rubber II, the self-propelling stationary seal ring is connected to an elastic stationary seal ring, and a sealing gland is arranged between the elastic stationary seal ring and the dynamic seal ring.

Description

technical field [0001] The invention relates to a recovery and utilization device for heat radiation from a rotary kiln cylinder body for cement calcining. Background technique [0002] Such as figure 1 , figure 2 As shown, the internal temperature of the existing rotary kiln shell for cement calcination is high. Although various heat insulation measures are adopted, currently refractory bricks 13 and kiln skin 14, the surface temperature of the rotary kiln shell is still high, and the rotary kiln shell Under the high temperature of the surface of the rotary kiln shell, the steel plate not only has to bear the dynamic and static loads caused by the weight of the rotary kiln shell 1 itself, the weight of the refractory brick 13 and the material 15, but also transmits the rotational torque, and the working conditions are relatively harsh. Since the shell of the rotary kiln is mostly made of Q235 steel plate, the surface temperature of the shell of the rotary kiln must be co...

Claims

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Application Information

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IPC IPC(8): F27D17/00F27B7/20F27B7/42
CPCY02P10/25
Inventor 钱建荣
Owner 天津健威泽节能环保科技股份有限公司
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