CN203501816U - Thermal cycle control device for low-temperature waste heat power generation system of dry-process cement production line - Google Patents
Thermal cycle control device for low-temperature waste heat power generation system of dry-process cement production line Download PDFInfo
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- CN203501816U CN203501816U CN201320529371.XU CN201320529371U CN203501816U CN 203501816 U CN203501816 U CN 203501816U CN 201320529371 U CN201320529371 U CN 201320529371U CN 203501816 U CN203501816 U CN 203501816U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 37
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000001035 drying Methods 0.000 title abstract 3
- 238000010248 power generation Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 118
- 239000007788 liquid Substances 0.000 claims description 28
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 26
- 238000006392 deoxygenation reaction Methods 0.000 claims description 24
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
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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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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to thermal cycle devices, in particular to a thermal cycle control device for a low-temperature waste heat power generation system of a dry-process cement production line. The thermal cycle control device comprises a kiln head waste heat boiler (1), a kiln tail waste heat boiler (2), an oxygen removing water tank (3), a water feeding pump (4), a hot water tank (5), a hot water pump (6), a steam turbine (7), a condenser (8), a condensate pump (9) and a controller (10), wherein all sensors are connected with the controller (10), and the controller (10) is connected with all pumps and valves. According to the thermal cycle control device, the yield and temperature of hot water, the temperature and pressure of steam and the water level of each water tank are controlled through feedback signals, so that the stability, safety and reliability of the operation of the thermal cycle control device for the low-temperature waste heat power generation system of the dry-process cement production line are achieved.
Description
Technical field
The utility model relates to a kind of thermodynamic cycle device, especially relates to a kind of dry cement production line low-temperature cogeneration system thermodynamic cycle control device.
Background technology
The principle of cement kiln residual heat generating is in cement production process, to produce a large amount of waste heats, utilizes the waste gas residual heat generating of kiln head and tail discharge, and the Thermal Synthetic utilization rate of manufacture of cement is brought up to more than 90% from 60%, and energy-saving and emission-reduction and economic benefit are obvious.In new type nonaqueous cement clinker production line production process, the process of cogeneration is haply: pass through waste-heat recovery device---waste heat boiler is discharged a large amount of low-grade waste gas residual heats by cement kiln kiln hood, kiln tail and is carried out heat exchange recovery, produce superheated steam pushing turbine and realize heat energy to the conversion of mechanical energy, thereby drive generator to send electric energy, kiln head boiler generates electricity can be in cement production process.In actual production, due to cement production process process, the parameter major part of process waste flue gas is in fluctuation status.And fluctuating range often exceed the design of conventional afterheat generating system can self-regulation scope, make the afterheat generating system can not stable operation.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of dry cement production line low-temperature cogeneration system thermodynamic cycle control device, object be make low-temperature cogeneration system adapt to quantity of steam fluctuating range that cement producing line waste gas produces afterheat generating system design can self-regulation scope, make the stable operation of afterheat generating system energy.
For achieving the above object, the technical solution that the utility model adopts is:
Dry cement production line low-temperature cogeneration system thermodynamic cycle control device, comprises kiln hood waste heat boiler, kiln tail waste heat boiler, deoxygenation water tank, feed pump, boiler, heat-exchanger pump, steam turbine, condenser, condensate pump, controller; Kiln hood waste heat boiler comprises economizer, 1# evaporating heating surface and 1# superheater, and kiln tail waste heat boiler comprises 2# evaporating heating surface and 2# superheater; The delivery port of deoxygenation water tank is connected with the water inlet of economizer by pipeline, and pipeline is provided with feed pump; The delivery port of economizer is connected with boiler water inlet by pipeline, and is being provided with hot water temperature's sensor and hot water water intaking valve near on the pipeline of economizer delivery port; Boiler is provided with hot water liquid level sensor, hot water tank outlet is connected with the drum water inlet of kiln hood waste heat boiler, kiln tail waste heat boiler by pipeline, drum is provided with liquid level of steam drum sensor, pipeline is provided with heat-exchanger pump, and is being provided with hot water water compensating valve near on the pipeline branch road of drum water inlet; Kiln hood waste heat boiler is connected with main steam header by steam branch pipe with kiln tail waste heat boiler steam venthole, the air intake of steam turbine and condenser is connected with main steam header by steam branch pipe, by on the steam branch pipe of boiler, there are vapor (steam) temperature sensor and steam pressure sensor, on the steam branch pipe of steam turbine and condenser, have inlet valve and condenser valve; The hot well of condenser is provided with condensation water level sensor, and the water inlet of hot well is connected with feed pump by pipeline, and pipeline is provided with back-water valve (BWV); The delivery port of hot well is connected with the water inlet of deoxygenation water tank by pipeline, and pipeline is provided with condensate pump; Deoxygenation water tank is provided with cold fluid level sensor, and the filling pipe of deoxygenation water tank is provided with water compensating valve; Hot water temperature's sensor, hot water liquid level sensor, liquid level of steam drum sensor, vapor (steam) temperature sensor, steam pressure sensor, condensation water level sensor, cold fluid level sensor are connected with controller by holding wire, and controller is connected with feed pump, heat-exchanger pump, condensate pump, hot water water intaking valve, hot water water compensating valve, inlet valve, condenser valve, back-water valve (BWV), water compensating valve by control line.
Described hot water water intaking valve, hot water water compensating valve, inlet valve, condenser valve, back-water valve (BWV), water compensating valve are motor-driven valve.
Described controller is DCS main frame.
Described holding wire and control line are shielding line.
During work, deaerated water in deoxygenation water tank enters in economizer and heats through feed pump, hot water temperature's sensor is passed to controller by hot water temperature's signal, controller is controlled hot water water intaking valve, hot water temperature to 180 enters in boiler during ℃ left and right, hot water liquid level sensor is passed to controller by the liquid level signal of boiler, and controller is controlled hot water water intaking valve and heat-exchanger pump, and boiler liquid level is remained in certain scope; Hot water supplies water to drum through heat-exchanger pump; The superheated steam that kiln hood waste heat boiler and kiln tail waste heat boiler are produced enters main steam header, vapor (steam) temperature sensor and steam pressure sensor are passed to controller by vapor (steam) temperature and pressure signal, controller is controlled hot water water compensating valve, makes mixed superheated steam meet the admission requirement of steam turbine; Mixed superheated steam enters steam turbine acting as main steam, and throttle flow is controlled inlet valve by controller, opens the direct condensation that condenser valve carries out part main steam when main steam amount is too large; Exhaust steam after acting is condensed into water by condenser, and condensate water is sent into deoxygenation water tank through condensate pump; Condensation water level sensor is passed to controller by the liquid level signal of hot well, and controller is controlled condensate pump and back-water valve (BWV), and the liquid level of hot well is remained in certain scope; Cold fluid level sensor is passed to controller by the liquid level signal of deoxygenation water tank, and controller is controlled condensate pump and water compensating valve, and the liquid level of deoxygenation water tank is remained in certain scope.Because having boiler as intermediate buffering, can make low-temperature cogeneration system adapt to quantity of steam fluctuating range that cement producing line waste gas produces afterheat generating system design can self-regulation scope, make the stable operation of afterheat generating system energy.
the beneficial effects of the utility model:
The utility model detects feedback signal by accurate sensor and controls hot water output and temperature, vapor (steam) temperature and pressure, each cistern water level, reaches dry cement production line low-temperature cogeneration system thermodynamic cycle control device stable and safe in operation reliable.Each valve valve is the flow that motor-driven valve can effectively be controlled water; Controller is that DCS main frame can carry out automation control to each equipment; Control line adopts Shielded Twisted Pair, has higher transfer rate and good anti-electromagnetic interference capability.Boiler is as intermediate buffering, can make low-temperature cogeneration system adapt to quantity of steam fluctuating range that cement producing line waste gas produces afterheat generating system design can self-regulation scope, make the stable operation of afterheat generating system energy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-kiln hood waste heat boiler, 2-kiln tail waste heat boiler, 3-deoxygenation water tank, 4-feed pump, 5-boiler, 6-heat-exchanger pump, 7-steam turbine, 8-condenser, 9-condensate pump, 10-controller, 11-economizer, 12-1# evaporating heating surface, 13-1# superheater, 14-2# evaporating heating surface, 15-2# superheater, 16-hot water temperature sensor, 17-hot water water intaking valve, 18-hot water liquid level sensor, 19-drum, 20-liquid level of steam drum sensor, 21-hot water water compensating valve, 22-main steam header, 23-vapor (steam) temperature sensor, 24-steam pressure sensor, 25-inlet valve, 26-condenser valve, 27-hot well, 28-condensation water level sensor, 29-back-water valve (BWV), 30-cold fluid level sensor, 31-water compensating valve.
The specific embodiment
embodiment 1
As shown in Figure 1, dry cement production line low-temperature cogeneration system thermodynamic cycle control device, comprise kiln hood waste heat boiler 1, kiln tail waste heat boiler 2, deoxygenation water tank 3, feed pump 4, boiler 5, heat-exchanger pump 6, steam turbine 7, condenser 8, condensate pump 9, controller 10; Kiln hood waste heat boiler 1 comprises economizer 11,1# evaporating heating surface 12 and 1# superheater 13, and kiln tail waste heat boiler 2 comprises 2# evaporating heating surface 14 and 2# superheater 15; The delivery port of deoxygenation water tank 3 is connected with the water inlet of economizer 11 by pipeline, and pipeline is provided with feed pump 4; The delivery port of economizer 11 is connected with boiler 5 water inlets by pipeline, and is being provided with hot water temperature's sensor 16 and hot water water intaking valve 17 near on the pipeline of economizer 11 delivery ports; Boiler 5 is provided with hot water liquid level sensor 18, boiler 5 delivery ports are connected with drum 19 water inlets of kiln hood waste heat boiler 1, kiln tail waste heat boiler 2 by pipeline, drum 19 is provided with liquid level of steam drum sensor 20, pipeline is provided with heat-exchanger pump 6, and is being provided with hot water water compensating valve 21 near on the pipeline branch road of drum 19 water inlets; Kiln hood waste heat boiler 1 is connected with main steam header 22 by steam branch pipe with kiln tail waste heat boiler 2 steam ventholes, the air intake of steam turbine 7 and condenser 8 is connected with main steam header 22 by steam branch pipe, by on the steam branch pipe of boiler, there are vapor (steam) temperature sensor 23 and steam pressure sensor 24, on the steam branch pipe of steam turbine 7 and condenser 8, have inlet valve 25 and condenser valve 26; The hot well 27 of condenser 8 is provided with condensation water level sensor 28, and the water inlet of hot well 27 is connected with feed pump 4 by pipeline, and pipeline is provided with back-water valve (BWV) 29; The delivery port of hot well 27 is connected with the water inlet of deoxygenation water tank 3 by pipeline, and pipeline is provided with condensate pump 9; Deoxygenation water tank 3 is provided with cold fluid level sensor 30, and the filling pipe of deoxygenation water tank 3 is provided with water compensating valve 31; Hot water temperature's sensor 16, hot water liquid level sensor 18, liquid level of steam drum sensor 20, vapor (steam) temperature sensor 23, steam pressure sensor 24, condensation water level sensor 28, cold fluid level sensor 30 are connected with controller 10 by holding wire, and controller 10 is connected with feed pump 4, heat-exchanger pump 6, condensate pump 9, hot water water intaking valve 17, hot water water compensating valve 21, inlet valve 25, condenser valve 26, back-water valve (BWV) 29, water compensating valve 31 by control line.
Described hot water water intaking valve 17, hot water water compensating valve 21, inlet valve 25, condenser valve 26, back-water valve (BWV) 29, water compensating valve 31 are motor-driven valve.
Described controller 10 is DCS main frame.
Described holding wire and control line are shielding line.
During work, deaerated water in deoxygenation water tank 3 enters heating in economizer 11 through feed pump 4, hot water temperature's sensor 16 is passed to controller 10 by hot water temperature's signal, 10 pairs of hot water water intaking valves 17 of controller are controlled, hot water temperature to 180 enters in boiler 5 during ℃ left and right, hot water liquid level sensor 18 is passed to controller 10 by the liquid level signal of boiler 5, and 10 pairs of hot water water intaking valves 17 of controller and heat-exchanger pump 6 are controlled, and boiler 5 liquid levels are remained in certain scope; Hot water supplies water to drum 19 through heat-exchanger pump 6; The superheated steam that kiln hood waste heat boiler 1 and kiln tail waste heat boiler 2 are produced enters main steam header 22, vapor (steam) temperature sensor 23 and steam pressure sensor 24 are passed to controller 10 by vapor (steam) temperature and pressure signal, 10 pairs of hot water water compensating valves 21 of controller are controlled, and make mixed superheated steam meet the admission requirement of steam turbine 7; Mixed superheated steam enters steam turbine 7 actings as main steam, and throttle flow is controlled by 10 pairs of inlet valves 25 of controller, opens the direct condensation that condenser valve 26 carries out part main steam when main steam amount is too large; Exhaust steam after acting is condensed into water by condenser 8, and condensate water is sent into deoxygenation water tank 3 through condensate pump 9; Condensation water level sensor 28 is passed to controller 10 by the liquid level signal of hot well 27, and 10 pairs of condensate pumps 9 of controller and back-water valve (BWV) 29 are controlled, and the liquid level of hot well 27 is remained in certain scope; Cold fluid level sensor 30 is passed to controller 10 by the liquid level signal of deoxygenation water tank 3, and 10 pairs of condensate pumps 9 of controller and water compensating valve 31 are controlled, and the liquid level of deoxygenation water tank 3 is remained in certain scope.Because having boiler 5 as intermediate buffering, can make low-temperature cogeneration system adapt to quantity of steam fluctuating range that cement producing line waste gas produces afterheat generating system design can self-regulation scope, make the stable operation of afterheat generating system energy.
Claims (5)
1. dry cement production line low-temperature cogeneration system thermodynamic cycle control device, it is characterized in that, comprise kiln hood waste heat boiler (1), kiln tail waste heat boiler (2), deoxygenation water tank (3), feed pump (4), boiler (5), heat-exchanger pump (6), steam turbine (7), condenser (8), condensate pump (9), controller (10); Kiln hood waste heat boiler (1) comprises economizer (11), 1# evaporating heating surface (12) and 1# superheater (13), and kiln tail waste heat boiler (2) comprises 2# evaporating heating surface (14) and 2# superheater (15); The delivery port of deoxygenation water tank (3) is connected with the water inlet of economizer (11) by pipeline, and pipeline is provided with feed pump (4); The delivery port of economizer (11) is connected with boiler (5) water inlet by pipeline, and is being provided with hot water temperature's sensor (16) and hot water water intaking valve (17) near on the pipeline of economizer (11) delivery port; Boiler (5) is provided with hot water liquid level sensor (18), boiler (5) delivery port is connected with drum (19) water inlet of kiln hood waste heat boiler (1), kiln tail waste heat boiler (2) by pipeline, drum (19) is provided with liquid level of steam drum sensor (20), pipeline is provided with heat-exchanger pump (6), and is being provided with hot water water compensating valve (21) near on the pipeline branch road of drum (19) water inlet; Kiln hood waste heat boiler (1) is connected with main steam header (22) by steam branch pipe with kiln tail waste heat boiler (2) steam venthole, the air intake of steam turbine (7) and condenser (8) is connected with main steam header (22) by steam branch pipe, by on the steam branch pipe of boiler, there are vapor (steam) temperature sensor (23) and steam pressure sensor (24), on the steam branch pipe of steam turbine (7) and condenser (8), have inlet valve (25) and condenser valve (26); The hot well (27) of condenser (8) is provided with condensation water level sensor (28), and the water inlet of hot well (27) is connected with feed pump (4) by pipeline, and pipeline is provided with back-water valve (BWV) (29); The delivery port of hot well (27) is connected with the water inlet of deoxygenation water tank (3) by pipeline, and pipeline is provided with condensate pump (9); Deoxygenation water tank (3) is provided with cold fluid level sensor (30), and the filling pipe of deoxygenation water tank (3) is provided with water compensating valve (31); Hot water temperature's sensor (16), hot water liquid level sensor (18), liquid level of steam drum sensor (20), vapor (steam) temperature sensor (23), steam pressure sensor (24), condensation water level sensor (28), cold fluid level sensor (30) are connected with controller (10) by holding wire, and controller (10) is connected with feed pump (4), heat-exchanger pump (6), condensate pump (9), hot water water intaking valve (17), hot water water compensating valve (21), inlet valve (25), condenser valve (26), back-water valve (BWV) (29), water compensating valve (31) by control line.
2. dry cement production line low-temperature cogeneration system thermodynamic cycle control device according to claim 1, it is characterized in that, described hot water water intaking valve (17), hot water water compensating valve (21), inlet valve (25), condenser valve (26), back-water valve (BWV) (29), water compensating valve (31) are motor-driven valve.
3. according to dry cement production line low-temperature cogeneration system thermodynamic cycle control device described in claim 1 or 2, it is characterized in that, described controller (10) is DCS main frame.
4. according to dry cement production line low-temperature cogeneration system thermodynamic cycle control device described in claim 1 or 2, it is characterized in that, described holding wire and control line are shielding line.
5. dry cement production line low-temperature cogeneration system thermodynamic cycle control device according to claim 3, is characterized in that, described holding wire and control line are shielding line.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529371.XU CN203501816U (en) | 2013-08-29 | 2013-08-29 | Thermal cycle control device for low-temperature waste heat power generation system of dry-process cement production line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320529371.XU CN203501816U (en) | 2013-08-29 | 2013-08-29 | Thermal cycle control device for low-temperature waste heat power generation system of dry-process cement production line |
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| CN203501816U true CN203501816U (en) | 2014-03-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662574A (en) * | 2018-05-07 | 2018-10-16 | 山东胜星化工有限公司 | A kind of control system of steam exhaust recovering device |
| CN111366004A (en) * | 2020-04-08 | 2020-07-03 | 秦皇岛信能能源设备有限公司 | Flue gas waste heat recycling system and intelligent control method |
-
2013
- 2013-08-29 CN CN201320529371.XU patent/CN203501816U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662574A (en) * | 2018-05-07 | 2018-10-16 | 山东胜星化工有限公司 | A kind of control system of steam exhaust recovering device |
| CN111366004A (en) * | 2020-04-08 | 2020-07-03 | 秦皇岛信能能源设备有限公司 | Flue gas waste heat recycling system and intelligent control method |
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Address after: Yuxi City, Yunnan Province, 651107 street town of Yimen County Patentee after: Yunnan Zhong Rui (Group) building materials Co.,Ltd. Address before: Yuxi City, Yunnan Province, 651107 street town of Yimen County Patentee before: YUNNAN YIMEN ZHONGRUI (GROUP) BUILDING MATERIAL CO.,LTD. |
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Granted publication date: 20140326 |