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 rotar

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
Comparison scheme
Effect test

Example Embodiment

[0032] Example one:

[0033]Use softened water or demineralized water as the heat exchange medium, and directly produce low temperature and low pressure (0.2~0.3Mpa, 150~170℃) steam with a certain degree of superheat after passing through the heat exchange hood. This steam is used for pure low temperature waste heat power generation in cement plants The supplementary steam enters the steam inlet of the steam turbine to drive the rotation of the turbine and drive the generator to generate electricity; or all low-temperature and low-pressure saturated steam is produced. The saturated steam enters the low-temperature and low-pressure steam section of the pure low-temperature waste heat power generation boiler of the cement plant, and then is used for power generation after the boiler is overheated. The production of low-temperature and low-pressure steam in the heat exchange cavity is allowed by the strength of the rotary kiln shell.

[0034] Cement rotary kiln shell heat dissipation...

Example Embodiment

[0045] Embodiment two:

[0046] In this embodiment, heat transfer oil is used as the heat exchange medium, and heat is exchanged on the surface of the rotary kiln shell through a heat exchange cover in a forced circulation of heat transfer oil. The heat transfer oil heated by the heat exchange is used to generate steam through a steam generator for power generation. The heat-conducting oil after the heat exchange temperature is directly led to the energy conversion device for heating and so on.

[0047] Cement rotary kiln shell heat dissipation recovery and utilization device, including rotary kiln shell 1, the rotary kiln shell 1 is provided with a heat exchange cover 2 in sections, the heat exchange cover 2 is made of steel plate and two semi-cylindrical bodies are connected by flanges Then wrap the rotary kiln shell 1. An insulation layer 21 is provided on the outer surface of the heat exchange cover 2 to prevent heat loss. A sealing device is provided between the two ends of t...

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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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