CN201589537U - Device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation - Google Patents

Device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation Download PDF

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Publication number
CN201589537U
CN201589537U CN2009202468275U CN200920246827U CN201589537U CN 201589537 U CN201589537 U CN 201589537U CN 2009202468275 U CN2009202468275 U CN 2009202468275U CN 200920246827 U CN200920246827 U CN 200920246827U CN 201589537 U CN201589537 U CN 201589537U
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China
Prior art keywords
pipeline
heat
cement kiln
steam turbine
oxygen
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Expired - Fee Related
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CN2009202468275U
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Chinese (zh)
Inventor
张全庆
邵青
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ZHONGJI ZHONGDIAN DESIGN AND RESEARCH INST
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ZHONGJI ZHONGDIAN DESIGN AND RESEARCH INST
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Priority to CN2009202468275U priority Critical patent/CN201589537U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

Abstract

The utility model provides a device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation, aiming to resolve problems that steam turbines are low in power and cement kiln afterheat boilers are low in heat utilization rate. The device consists of a cement kiln afterheat boiler (1), a steam turbine (5), a condenser (4), a deaerator (6), a water supply pump (2) and pipelines, the cement kiln afterheat boiler (1) is connected with the steam turbine (5) via a pipeline, the steam turbine (6) is connected with the condenser (4) via a pipeline and connected with a steam inlet (12) on the deaerator (6) via a pipeline, and one end of the water supply pump (2) is connected with the cement kiln afterheat boiler (1) via a pipeline while the other end is connected with a heat exchanger (3) via a pipeline. The device is used in cement kiln afterheat generation, can increase power of the steam turbine (5), and simultaneously can increase heat utilization rate of the cement kiln afterheat boiler.

Description

Utilize the device of deaerated feedwater heat-setting water in the cement kiln residual heat generating
Technical field
The utility model relates to a kind of being used in the cement kiln residual heat generating, utilizes the device of deaerated feedwater heat-setting water.
Background technology
At present, the device that the generating of cement kiln waste heat is often used generally includes only by steam turbine, kiln heat recovery boiler, condensing engine and oxygen-eliminating device etc. to be formed, its concrete job step is, the condensate water of steam turbine by condensing engine directly inserted oxygen-eliminating device, extract steam from steam turbine then and be sent to oxygen-eliminating device heat-setting water to reach the purpose of deoxygenation, the deaerated feedwater that comes out from oxygen-eliminating device enters kiln heat recovery boiler by water pump, enters steam turbine behind the deaerated feedwater absorption cement kiln waste heat and generates electricity.Owing to adopt this device, in the process of using, because oxygen-eliminating device generally needs very high temperature, this just need extract more steam from steam turbine and come heat-setting water to reach required temperature, thereby a large amount of steam makes the spendable quantity of steam decline of steam turbine influence the generating efficiency of steam engine in the steam turbine owing to extracted, on the other hand, owing to make that the temperature difference of deaerated feedwater and kiln heat recovery boiler is too small through the deaerated feedwater after the deoxygenation in that temperature after heating is very high in the oxygen-eliminating device, thereby can not effectively absorb the waste heat of kiln heat recovery boiler, cause the utilization rate of waste heat of kiln heat recovery boiler not high.
The utility model content
The technical problems to be solved in the utility model provides the device that utilizes deaerated feedwater heat-setting water in a kind of cement kiln residual heat generating, thereby the generating efficiency that does not influence steam turbine can also improve cement kiln afterheat utilization rate simultaneously.
In order to solve the problems of the technologies described above, the utility model provides following technical scheme:
Utilize the device of deaerated feedwater heat-setting water in a kind of cement kiln residual heat generating, this device is made up of kiln heat recovery boiler, steam turbine, condenser, oxygen-eliminating device, feed pump and pipeline, wherein, kiln heat recovery boiler is connected with steam turbine by pipeline, steam turbine is connected with condenser by pipeline, steam turbine also is connected with steam inlet on the oxygen-eliminating device by pipeline, and an end of feed pump is connected by pipeline with kiln heat recovery boiler; The described feed pump other end is connected with heat exchanger by pipeline, described heat exchanger is provided with the condensate water inlet, the condensate water outlet, deaerated feedwater inlet and deaerated feedwater outlet, also be provided with condensate water inlet and deaerated feedwater outlet on the described oxygen-eliminating device, wherein the inlet of the condensate water on the heat exchanger is connected by pipeline with condenser, condensate water outlet on the heat exchanger enters the mouth with the condensate water on the oxygen-eliminating device and is connected by pipeline, deaerated feedwater outlet on the oxygen-eliminating device is connected with the deaerated feedwater inlet duct on the heat exchanger, and the deaerated feedwater outlet on the heat exchanger is connected with feed pump by pipeline.
Concrete, utilize the heat exchanger in the device of deaerated feedwater heat-setting water to be plate type heat exchanger in the above-mentioned cement kiln residual heat generating.
Concrete, utilize the oxygen-eliminating device in the device of deaerated feedwater heat-setting water to be the air suspended type oxygen-eliminating device in the above-mentioned cement kiln residual heat generating.
Compared with prior art, the utility model utilizes in this cement kiln residual heat generating in the device of deaerated feedwater heat-setting water and has adopted these parts of heat exchanger, by being set, heat exchanger can carry out the temperature that heat exchange is used to improve condensate water so that enter the condensate water and the deaerated feedwater of oxygen-eliminating device, absorb the amount that is used for heat-setting water thereby reduce, increased the mechanical efficiency of steam turbine from steam turbine; On the other hand, through the temperature reduction of the deaerated feedwater after the heat exchange, the feasible temperature difference that is transferred to the deaerated feedwater and the kiln heat recovery boiler of kiln heat recovery boiler makes the heat utilization efficiency of kiln heat recovery boiler promote.
Description of drawings
Fig. 1 is the schematic representation of apparatus that deaerated feedwater heat-setting water is provided in a kind of cement kiln residual heat generating of providing of the utility model;
The oxygen-eliminating device in the device of deaerated feedwater heat-setting water and the thin portion schematic diagram of heat exchanger are provided in a kind of cement kiln residual heat generating of providing of the utility model Fig. 2.
The specific embodiment
Embodiment: the device that utilizes deaerated feedwater heat-setting water in of the present utility model a kind of cement kiln residual heat generating as shown in Figure 1, this device is made up of kiln heat recovery boiler 1, steam turbine 5, condenser 4, oxygen-eliminating device 6, feed pump 2 and pipeline, wherein, kiln heat recovery boiler 1 is connected with steam turbine 5 by pipeline, steam turbine 5 is connected with condenser 4 by pipeline, steam turbine 5 also is connected with steam inlet 12 on the oxygen-eliminating device 6 by pipeline, and an end of feed pump 2 and kiln heat recovery boiler 1 are connected by pipeline; Described feed pump 2 other ends are connected with heat exchanger 3 by pipeline, described heat exchanger 3 is provided with condensate water inlet 9, condensate water outlet 10, deaerated feedwater inlet 7 and deaerated feedwater outlet 8, also be provided with condensate water inlet 11 and deaerated feedwater outlet 13 on the described oxygen-eliminating device 6, wherein the condensate water on the heat exchanger 3 inlet 9 and condenser 4 are connected by pipeline, the outlet 10 of condensate water on the heat exchanger 3 and condensate water on the oxygen-eliminating device 6 enter the mouth and 11 are connected by pipeline, the outlet 13 of deaerated feedwater on the oxygen-eliminating device 6 and deaerated feedwater on the heat exchanger 37 pipelines that enter the mouth are connected, and the deaerated feedwater on the heat exchanger 3 exports 8 and is connected with feed pump 2 by pipeline.
Utilize the operation principle of device of deaerated feedwater heat-setting water as follows in the cement kiln residual heat generating described in the utility model in the cement kiln residual heat generating: the condensate water through condenser 4 that sends out from steam turbine 5 at first enters heat exchanger 3 by condensate water inlet 9, in heat exchanger 3, condensate water is carried out heat exchange with the deaerated feedwater through 7 inputs of the inlet of the deaerated feedwater on the heat exchanger 3 that the deaerated feedwater outlet 13 from oxygen-eliminating device 6 is exported, after the heat exchange, condensate water is input in the oxygen-eliminating device 6 through the outlet of the condensate water on the heat exchanger 3 10 outputs and through the inlet of the condensate water on the oxygen-eliminating device 6 11, owing to improved the temperature of condensate water, thereby reduced from steam turbine 5 and absorbed the quantity of steam that is used for heat-setting water by steam inlet 12, so just making has more steam to work in steam turbine 5, has increased the mechanical efficiency of steam turbine 5; On the other hand, through with the condensate water heat exchange after the temperature of deaerated feedwater reduce, and the deaerated feedwater after the cooling is transferred to feed pump 2 by deaerated feedwater outlet 8, enter kiln heat recovery boiler 1 by feed pump 2, because it is lower that the temperature of deaerated feedwater becomes after heat exchange, make that the temperature difference of itself and kiln heat recovery boiler 1 is bigger, thereby improved the heat utilization efficiency of kiln heat recovery boiler 1 greatly.Such as, with general employing is that the air suspended type oxygen-eliminating device is an example, when adopting this air suspended type oxygen-eliminating device to remove oxygen in the condensate water and other incondensable gas, the temperature of condensate water need be heated to 105 ℃, and the temperature of general condensate water of coming out through condenser 4 from steam turbine 5 has only 40 ℃, after heat exchanger 3 heat exchange, the temperature of condensate water can be increased to 95 ℃, only need condensate water to be got final product from 95 ℃ of steam that are promoted to 105 ℃ from steam turbine 5 absorptions, reduced the quantity of steam of drawing from steam turbine 5 greatly, thereby increased the mechanical efficiency of steam turbine 5, made the generated energy of steam turbine 5 increase about 3%; On the other hand, the temperature of the deaerated feedwater after the heat exchange is reduced to 50 ℃ from 105 ℃, has strengthened the temperature difference with kiln heat recovery boiler 1, thereby increases the cement kiln utilization rate of waste heat more than at least 8%.

Claims (3)

1. utilize the device of deaerated feedwater heat-setting water in the cement kiln residual heat generating, this device is made up of kiln heat recovery boiler (1), steam turbine (5), condenser (4), oxygen-eliminating device (6), feed pump (2) and pipeline, wherein, kiln heat recovery boiler (1) is connected with steam turbine (5) by pipeline, steam turbine (5) is connected with condenser (4) by pipeline, steam turbine (5) also is connected with steam inlet (12) on the oxygen-eliminating device (6) by pipeline, and an end of feed pump (2) is connected by pipeline with kiln heat recovery boiler (1); It is characterized in that: described feed pump (2) other end is connected with heat exchanger (3) by pipeline, described heat exchanger (3) is provided with condensate water inlet (9), condensate water outlet (10), deaerated feedwater inlet (7) and deaerated feedwater outlet (8), also be provided with condensate water inlet (11) and deaerated feedwater outlet (13) on the described oxygen-eliminating device (6), wherein the inlet of the condensate water on the heat exchanger (3) (9) is connected by pipeline with condenser (4), condensate water on the heat exchanger (3) outlet (10) and condensate water on the oxygen-eliminating device (6) enter the mouth (11) be connected by pipeline, deaerated feedwater on the oxygen-eliminating device (6) outlet (13) is connected with deaerated feedwater inlet (7) pipeline on the heat exchanger (3), and the deaerated feedwater on the heat exchanger (3) exports (8) and is connected with feed pump (2) by pipeline.
2. utilize the device of deaerated feedwater heat-setting water in the cement kiln residual heat generating as claimed in claim 1, it is characterized in that: described heat exchanger (3) is a plate type heat exchanger.
3. utilize the device of deaerated feedwater heat-setting water in the cement kiln residual heat generating as claimed in claim 1, it is characterized in that: described oxygen-eliminating device (6) is the air suspended type oxygen-eliminating device.
CN2009202468275U 2009-11-11 2009-11-11 Device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation Expired - Fee Related CN201589537U (en)

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Application Number Priority Date Filing Date Title
CN2009202468275U CN201589537U (en) 2009-11-11 2009-11-11 Device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation

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Application Number Priority Date Filing Date Title
CN2009202468275U CN201589537U (en) 2009-11-11 2009-11-11 Device utilizing deaerating feed to heat condensed water in cement kiln afterheat generation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110726133A (en) * 2019-09-26 2020-01-24 首钢京唐钢铁联合有限责任公司 Method and device for reducing dissolved oxygen in water supply of CCPP (combined cycle process control) waste heat boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110726133A (en) * 2019-09-26 2020-01-24 首钢京唐钢铁联合有限责任公司 Method and device for reducing dissolved oxygen in water supply of CCPP (combined cycle process control) waste heat boiler

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Granted publication date: 20100922

Termination date: 20111111