CN211120694U - Flash evaporation power generation system of heat collection cover of cement kiln - Google Patents
Flash evaporation power generation system of heat collection cover of cement kiln Download PDFInfo
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- CN211120694U CN211120694U CN201921944459.1U CN201921944459U CN211120694U CN 211120694 U CN211120694 U CN 211120694U CN 201921944459 U CN201921944459 U CN 201921944459U CN 211120694 U CN211120694 U CN 211120694U
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- heat collection
- cement kiln
- water
- collection cover
- deaerator
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Abstract
The utility model relates to a cement kiln waste heat recovery technical field specifically is a cement kiln thermal-arrest cover flash distillation power generation system, the thermal-arrest cover has been arranged in proper order to hydrologic cycle return circuit, flash vessel and oxygen-eliminating device, the thermal-arrest cover is installed in the top of cement kiln barrel, the delivery port of thermal-arrest cover is connected in the water inlet of flash vessel, the gas outlet of flash vessel is connected in the water inlet of oxygen-eliminating device through first branch road, the delivery port of oxygen-eliminating device is connected in the water inlet of thermal-arrest cover, branch cylinder has been arranged in proper order in first branch road, steam turbine and condenser, the air inlet in branch cylinder is connected to the gas outlet of flash vessel, the air inlet in the steam turbine is connected to the gas outlet of branch cylinder, install the generator on the steam. The utility model discloses produce hot water with the thermal-arrest cover and carry out the flash distillation through the flash vessel, the saturated steam after the flash distillation is crossed gets into and generates electricity in the turbine, increases the generated energy, reduces the energy consumption, promotes the resource saving.
Description
Technical Field
The utility model relates to a cement kiln waste heat recovery technical field specifically is a cement kiln thermal-arrest cover flash distillation power generation system.
Background
The cement industry is an indispensable basic industry for national economic development, production construction and people's life. However, the existing cement production is still an industry with high energy consumption, and the energy consumption of the cement production accounts for 70% of the energy consumption of the building material industry in China. Theoretically, about 1755.6-1797.4 kJ of energy is consumed for calcining 1kg of cement clinker, but because the heat exchange efficiency between the materials and the high-temperature air flow in the cement rotary kiln is low, the energy which needs to be consumed actually can reach 3011kJ, and the energy utilization rate is only 59%. Through the energy analysis to the rotary cement kiln system, the main heat loss of the novel dry cement production line is given: the waste gas of the cement kiln accounts for 19.15 percent, the hot air exhausted by the cooler accounts for 5.61 percent, and the convection and radiation heat on the surface of the cylinder body of the cement kiln accounts for 10.47 percent. Therefore, the cement production process has huge energy loss and abundant available waste heat resources. The existing research shows that the surface temperature of the rotary kiln barrel can averagely reach about 300 ℃ when the kiln body works, which shows that the waste heat on the surface of the barrel can be collected and utilized in a heat radiation mode. The main utilization mode is that an arc-shaped heat collecting cover is arranged above a cement kiln cylinder body to generate hot water at about 120 ℃, the hot water can be effectively utilized for heating or bathing in winter generally, and energy waste is caused by greatly reducing the use amount of the hot water in summer.
Flashing is the phenomenon whereby saturated liquid at high pressure, after entering a vessel at a relatively low pressure, becomes a portion of the saturated vapor and liquid at the vessel pressure due to the sudden drop in pressure.
The patent with the application number of CN201621322533.2 discloses a novel cement kiln heat collection cover low-temperature waste heat ORC power generation system, and the device is to utilize the cement kiln heat collection cover to produce 70/100 ℃ hot water, send the hot water into an ORC system (organic Rankine cycle system) evaporator, heat organic working medium and produce little superheated steam, and the entering organic turbine generates electricity. Conventional steam rankine cycles have not been used in this field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the above-mentioned technical problem among the prior art, provide a cement kiln thermal-arrest cover flash distillation power generation system, its mainly utilize kiln barrel top installation arc thermal-arrest cover, produce hot water with the thermal-arrest cover and carry out the flash distillation through the flash vessel, generate electricity in the saturated steam entering steam turbine after the flash distillation.
In order to achieve the aim, the flash evaporation power generation system of the heat collection cover of the cement kiln is characterized by comprising a water circulation loop,
the water circulation loop is sequentially provided with a heat collection cover, a flash evaporator and a deaerator, the heat collection cover is arranged above the cement kiln barrel, the water outlet of the heat collection cover is connected with the water inlet of the flash evaporator, the gas outlet of the flash evaporator is connected with the water inlet of the deaerator through a first branch, the water outlet of the deaerator is connected with the water inlet of the heat collection cover,
the steam turbine comprises a steam turbine and a condenser, and is characterized in that a branch cylinder, a steam turbine and the condenser are sequentially arranged in the first branch, a gas outlet of the flash evaporator is connected to a gas inlet of the branch cylinder, a gas outlet of the branch cylinder is connected to a gas inlet of the steam turbine, a generator is installed on the steam turbine, a gas outlet of the steam turbine is connected to a gas inlet of the condenser, and a water outlet of the condenser is connected to a water inlet of the deaerator.
Preferably, the water outlet of the flash evaporator is connected with the water inlet of the deaerator through a second branch, a drain box is arranged on the second branch, the water outlet of the flash evaporator is connected with the water inlet of the drain box, and the water outlet of the drain box is connected with the water inlet of the deaerator.
Preferably, a condensate pump is arranged between the condenser and the deaerator.
Preferably, the water outlet of the deaerator is connected to the water inlet of the boiler.
Preferably, a water feeding pump is arranged between the deaerator and the boiler, and the water feeding pump is further arranged between the deaerator and the heat collecting cover.
Preferably, a drain pump is arranged between the drain tank and the deaerator.
Preferably, the heat collecting cover is arc-shaped.
Compared with the prior art, the utility model, its advantage lies in:
1. the utility model carries out flash evaporation on hot water generated by the heat collecting cover through the flash evaporator, and saturated steam after flash evaporation enters the steam turbine to generate electricity, thereby increasing the generated energy, reducing the energy consumption and promoting the resource saving;
2. the utility model adopts water circulation as a whole, does not produce pollution and can protect the environment;
3. the utility model discloses simple structure, convenient to use.
Drawings
Fig. 1 is a schematic view of the present invention.
As shown, in the figure:
1. the system comprises a heat collecting cover, a flash evaporator, a gas distributing cylinder, a steam turbine, a generator, a condenser, a condensate pump, a drain tank, a drain pump, a deaerator, a water feeding pump and a boiler, wherein the flash evaporator is 2, the gas distributing cylinder is 3, the steam turbine is 4, the generator is 5, the condenser is 6, the condensate pump is 7, the drain tank is 8, the drain pump is 9, the deaerator is 10.
Detailed Description
The structure and principle of such a device will be apparent to those skilled in the art from the following further description of the invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in figure 1, the flash evaporation power generation system of the heat collection cover of the cement kiln comprises a water circulation loop, wherein the heat collection cover, a flash evaporator and a deaerator are sequentially arranged on the water circulation loop. The arc-shaped heat collecting cover is arranged above the cement kiln cylinder, and the waste heat of the cement kiln cylinder can enable the heat collecting cover to generate hot water of about 120 ℃ for heating or bathing in winter generally.
The water outlet of the heat collection cover is connected to the water inlet of the flash evaporator, the flash evaporator is connected to the water inlet of the deaerator through the first branch and the second branch respectively, and the water outlet of the deaerator is connected to the water inlet of the heat collection cover to form a water circulation loop.
Hot water in the heat collecting cover enters the flash evaporator through a pipeline and forms saturated steam and saturated liquid through flash evaporation.
The gas outlet of flash vessel is connected in the water inlet of oxygen-eliminating device through first branch road, and branch cylinder, steam turbine and condenser have been arranged in proper order in first branch road, and the gas outlet of flash vessel is connected in the air inlet of branch cylinder, and the gas outlet of branch cylinder is connected in the air inlet of steam turbine, installs the generator on the steam turbine, and the gas outlet of steam turbine is connected in the air inlet of condenser, and the delivery port of condenser is connected in the water inlet of oxygen-eliminating device. Saturated steam in the flash vessel gets into the steam-distributing cylinder from the gas outlet of flash vessel in, in the steam-distributing cylinder gets into the steam turbine, drives the steam turbine motion, and the steam turbine turns into the electric energy of generator with its kinetic energy to get the effect of electricity generation, steam gets into the condenser in the steam turbine gets into the steam turbine after that, and steam condenses into water through the steam turbine, and in water sent into the oxygen-eliminating device through condensate pump, the oxygen-eliminating device carried out the deoxidization to water and handled.
The delivery port of flash vessel passes through the second branch road and connects in the water inlet of oxygen-eliminating device, and the steam trap has been arranged to the second branch road, and the delivery port of flash vessel is connected in the water inlet of steam trap, and the delivery port of steam trap is connected in the water inlet of oxygen-eliminating device. Saturated liquid in the flash evaporator enters the drain box from a water outlet of the flash evaporator, water in the drain box is conveyed to the deaerator by the drain pump, and the deaerator deaerates the water.
The water outlet of the deaerator is connected with the water inlet of the boiler and the water inlet of the heat collecting cover. The water pump can send the water in the deaerator into the heat collection cover for use by the heat collection cover. The feed pump can also feed the water in the deaerator into the boiler to supply water for the boiler.
The utility model discloses a complete hydrologic cycle return circuit as follows:
1. hot water in the heat collecting cover enters the flash evaporator through a pipeline, and saturated steam and saturated liquid are respectively formed in the flash evaporator;
2. saturated steam enters a steam turbine through a branch cylinder to further drive the steam turbine to move, the steam turbine converts kinetic energy of the steam into electric energy of a generator, then the steam in the steam turbine enters a condenser, the steam is condensed into water through the condenser, the water is sent into a deaerator through a condensate pump, and the deaerator deaerates the water;
3. meanwhile, saturated liquid enters the drain tank, the drain pump sends water in the drain tank to the deaerator, and the deaerator performs deaerating treatment on the water;
4. the water pump can convey the water treated in the deaerator into the heat collection cover for the heat collection cover to use;
5. the feed pump can also send the water treated in the deaerator to the boiler to supply water for the boiler;
6. forming a complete water circulation loop.
Because the use of the hot water amount is greatly reduced in summer, the use efficiency of the heat collecting cover is lower, and energy waste is caused, the utility model can enable the hot water generated by the heat collecting cover to be flashed by the flash evaporator, and the saturated steam after being flashed enters the steam turbine air supplement system to generate electricity, thereby increasing the generated energy, reducing the energy consumption and promoting the resource saving; the water circulation is adopted, so that pollution is avoided, and the environment can be protected; simple structure and convenient use.
Claims (7)
1. A flash evaporation power generation system of a heat collection cover of a cement kiln is characterized by comprising a water circulation loop,
the water circulation loop is sequentially provided with a heat collection cover, a flash evaporator and a deaerator, the heat collection cover is arranged above the cement kiln barrel, the water outlet of the heat collection cover is connected with the water inlet of the flash evaporator, the gas outlet of the flash evaporator is connected with the water inlet of the deaerator through a first branch, the water outlet of the deaerator is connected with the water inlet of the heat collection cover,
the steam turbine comprises a steam turbine and a condenser, and is characterized in that a branch cylinder, a steam turbine and the condenser are sequentially arranged in the first branch, a gas outlet of the flash evaporator is connected to a gas inlet of the branch cylinder, a gas outlet of the branch cylinder is connected to a gas inlet of the steam turbine, a generator is installed on the steam turbine, a gas outlet of the steam turbine is connected to a gas inlet of the condenser, and a water outlet of the condenser is connected to a water inlet of the deaerator.
2. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 1,
the delivery port of flash vessel pass through the second branch road connect in the water inlet of oxygen-eliminating device, the drain trap has been arranged to the second branch road, the delivery port of flash vessel connect in the water inlet of drain trap, the delivery port of drain trap connect in the water inlet of oxygen-eliminating device.
3. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 1,
and a condensate pump is arranged between the condenser and the deaerator.
4. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 1,
and the water outlet of the deaerator is connected with the water inlet of the boiler.
5. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 4,
a water feeding pump is arranged between the deaerator and the boiler, and the water feeding pump is further arranged between the deaerator and the heat collecting cover.
6. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 2,
a drain pump is arranged between the drain tank and the deaerator.
7. The cement kiln heat collection cover flash evaporation power generation system as claimed in claim 1,
the heat collection cover is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944459.1U CN211120694U (en) | 2019-11-12 | 2019-11-12 | Flash evaporation power generation system of heat collection cover of cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921944459.1U CN211120694U (en) | 2019-11-12 | 2019-11-12 | Flash evaporation power generation system of heat collection cover of cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211120694U true CN211120694U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921944459.1U Active CN211120694U (en) | 2019-11-12 | 2019-11-12 | Flash evaporation power generation system of heat collection cover of cement kiln |
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| Country | Link |
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| CN (1) | CN211120694U (en) |
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2019
- 2019-11-12 CN CN201921944459.1U patent/CN211120694U/en active Active
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