CN203271842U - ORC electricity generation system used for recycling waste heat of smoke discharged by compressor station gas turbine - Google Patents
ORC electricity generation system used for recycling waste heat of smoke discharged by compressor station gas turbine Download PDFInfo
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- CN203271842U CN203271842U CN 201320291839 CN201320291839U CN203271842U CN 203271842 U CN203271842 U CN 203271842U CN 201320291839 CN201320291839 CN 201320291839 CN 201320291839 U CN201320291839 U CN 201320291839U CN 203271842 U CN203271842 U CN 203271842U
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Abstract
The utility model discloses an ORC electricity generation system used for recycling waste heat of smoke discharged by a compressor station gas turbine, wherein the ORC electricity generation system can fully and effectively utilize thermal energy of the smoke discharged by the gas turbine. The system mainly comprises a heat exchanger, a power output device, an electric generator, an organic working medium circulation pump and a condenser, wherein the heat exchanger is connected with a heat source and comprises a pre-heater, an evaporator and a superheater, and the pre-heater, the evaporator and the superheater are sequentially connected in series; the electric generator is connected with the power output end of the power output device; the heat source comprises a boiler, a heat-conductive oil circulation pump and an oil storage tank, and further comprises a heat regenerator, and the heat regenerator is used for conducting heat exchange between organic working media discharged by the power output device and organic working media discharged by the organic working media circulation pump so as to fully utilize the rest of thermal energy of the organic working media discharged by the power output device. The smoke discharged by the gas turbine can be used by the system to heat heat-conductive oil, the organic working media are heated through the heat-conductive oil, and accordingly the electric generator is driven by the power output device to generate electricity.
Description
Technical field
The utility model relates to a kind of power generation system, relates in particular to a kind of ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat.
Background technique
Have a lot of compressor stations on the natural-gas transfer pipelines such as transfering natural gas from the west to the east.These compressor stations adopt the combustion machine to promote compressor operation, the pressure drop that the pressure when promoting natural gas transport causes to offset the long-distance conveying of rock gas.The flue gas of combustion machine discharging has near temperature and the flow of 500 ℃ larger.This part flue gas through utilizing directly discharging, does not cause the waste of the energy.
Namely organic Rankine circulation of ORC, the power generation system of utilizing this art designs to become is the ORC power generation system.At present, existing ORC power generation system generally comprises two heat exchangers, power take-off, the generator that is connected with power take-off and a recycle pump.For example " refrigeration journal " February in 2012, the 33rd the 1st phase of volume disclosed an above-mentioned ORC power generation system.And China Patent Publication No. CN1950591A also discloses a similar ORC power generation system.Each device in above-mentioned this power generation system is connected and forms a circulation loop.Organic media circulates in this loop.One of them heat exchanger is connected with thermal source and carries out heat exchange, and organic working medium is heated into steam condition, and the organic media of steam condition enters the power take-off acting, and power take-off drives the generator generating.Organic working medium then enters another heat exchanger and carries out condensation formation liquid, and this heat exchanger is condenser namely.The organic working medium that is cooled forms the overcooled liquid state under the pressure-acting of recycle pump, then enter with heat exchanger that thermal source is connected in.Loop generating by above-mentioned.Existing this power generation system has the following disadvantages: 1, organic working medium is gone back reserve part heat energy after through the power take-off acting, and these heat energy are slatterned by the condenser heat release, and system effectiveness is very low.2, system is through after using for a long time, and inner organic working medium generation loss can't in time replenish.3, the design of heat exchanger is reasonable not, and heat utilization rate is low.
The model utility content
The technical problem that the utility model solves is to provide a kind of ORC power generation system that is used for reclaiming compressor station combustion machine smoke discharging residual heat of heat energy of the flue gas that can fully effectively utilize the discharging of combustion machine.
the technological scheme that its technical problem that solves the utility model adopts is: the ORC power generation system that is used for reclaiming compressor station combustion machine smoke discharging residual heat, comprise the heat exchanger that is connected with thermal source, power take-off, the generator that is connected with the clutch end of power take-off, the organic working medium recycle pump, condenser, described heat exchanger comprises the thermal source entrance, the thermal source outlet, heat exchanger organic working medium entrance and the outlet of heat exchanger organic working medium, power take-off comprises output unit organic working medium entrance and the outlet of output unit organic working medium, the outlet of heat exchanger organic working medium is connected with output unit organic working medium entrance, condenser comprises condenser organic working medium entrance and the outlet of condenser organic working medium, described thermal source comprises boiler, described boiler comprises the conduction oil entrance, the conduction oil outlet, smoke inlet and smoke outlet, be provided with oil duct between conduction oil entrance and conduction oil outlet, be provided with the flue gas channel that carries out exchange heat for the conduction oil in flue gas and oil duct between smoke inlet and smoke outlet, the conduction oil outlet of boiler is connected with the thermal source entrance of heat exchanger, the thermal source outlet of heat exchanger is connected with the conduction oil entrance of boiler by heat conduction oil circulating pump, also comprise regenerator, be provided with the first heat exchange road between the outlet of the first organic working medium entrance of regenerator and the first organic working medium, be provided with the second heat exchange road between the outlet of the second organic working medium entrance of regenerator and the second organic working medium, the first organic working medium entrance of regenerator is connected with the outlet of output unit organic working medium, the first organic working medium outlet of regenerator is connected with condenser organic working medium entrance, the outlet of condenser organic working medium is connected with the second organic working medium entrance of regenerator by the organic working medium recycle pump, the second organic working medium outlet of regenerator is connected with heat exchanger organic working medium entrance.
Said system can be used for the flue gas of combustion machine discharging the heating conduction oil, and conduction oil can heat organic working medium again, and then drives the generator generating.Whole system has been carried out effective utilization with the waste heat of the flue gas of combustion machine discharging, and heat utilization rate is higher.
Be further: also be connected with liquid container between described condenser and organic working medium recycle pump, be provided with the organic working medium supplementary device on described liquid container.
Be further: described heat exchanger comprises preheater, vaporizer and the superheater of series connection successively, the thermal source entrance of described heat exchanger and the outlet of heat exchanger organic working medium all are arranged on superheater, and the outlet of the thermal source of heat exchanger and heat exchanger organic working medium entrance all are arranged on preheater.
Be further: described power take-off is the ORC turbine, is provided with on described ORC turbine be used to the sealing configuration that prevents that organic working medium from leaking.
Be further: be connected with oil storage tank between the thermal source outlet of described heat exchanger and heat conduction oil circulating pump.
The beneficial effects of the utility model are:
1, can fully effectively utilize the heat energy of the flue gas of combustion machine discharging.Applicable best is to discharge the heat recovery of flue gas for the compressor station combustion machine that is based upon the water-deficient area.System has avoided organic working medium directly to contact to be heated with high-temperature flue gas and has decomposed by heat-conducting oil heating system.
2, can play the effect of buffering on the one hand by liquid container, guarantee that organic working medium continues circulation smoothly in system, on the other hand also can be in time replenishing organic working medium in system.
3, can prevent the organic working medium leakage by sealing configuration.
4, can play the effect of buffering on the one hand by oil storage tank, guarantee that conduction oil continues circulation smoothly, thereby guarantee that the temperature of organic working medium in heat exchanger fluctuation can not occur, be conducive to protect organic working medium not change because of temperature fluctuation generation physical property; Can in time replenish conduction oil on the other hand.And, when frequent fluctuation occurs in combustion machine load, can affect flow and the temperature of flue gas, but the amount by conduction oil in the oil storage tank control system, and then can come the amount of conduction oil in timely adjust system to guarantee the temperature stabilization of conduction oil according to the temperature of the smoke inlet of boiler, thereby can guarantee the temperature stabilization of organic working medium, fluctuation can not occur.
5, by using preheater, vaporizer and the superheater of series connection successively, can improve heat exchange efficiency, also be conducive to guarantee the continuous strand slip of organic Temperature of Working rising, prevent that the too fast rising of organic working medium Yin Wendu or inhomogeneous rising from causing physical property to change, and affects the normal use of organic working medium.During lower than the critical pressure of organic working medium, organic working medium will experience preheating, evaporation and overheated 3 stages in the process of completing from liquid to the overheated gas when system design temperature.Each stage reaches following effect by the heat exchange with conduction oil: in preheater, the organic working medium heat absorption becomes saturated liquids from supercooled state liquid; In vaporizer, the organic working medium heat absorption becomes with the saturated vapor under pressure from saturated liquids; In superheater, the organic working medium heat absorption becomes from saturated liquids the superheated vapor that satisfies requirement of system design.The called after of heat exchanger better characterizes function and the purpose of this heat exchanger.The design of 3 sections heat exchangers, the organic working medium that meets below critical pressure becomes the phase transformation generating process of superheated vapor from liquid, make each heat exchanger only need bear organic working medium the heat exchange requirement of a certain section, in preheater and superheater, the heat exchange of organic working medium is all to carry out at single-phase state, what complete in vaporizer is a boiling process, and the different phase of so just having avoided different sections occur in a heat exchanger conducts heat, and reduces the risk of conducting heat and losing efficacy or worsening; Whether simultaneously arrange temperature point and pressure-measuring-point every section heat exchanger after, monitor whole heat transfer process and carry out according to setting value, whether the actual motion performance that is conducive to analyze every section heat exchanger reaches designing requirement, detectability and the operability of raising equipment.
Description of drawings
Fig. 1 is the schematic diagram of the ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat of the present utility model;
be labeled as in figure: heat exchanger 1, thermal source entrance 11, heat exchanger organic working medium outlet 12, thermal source outlet 13, heat exchanger organic working medium entrance 14, superheater 15, vaporizer 16, preheater 17, power take-off 2, output unit organic working medium entrance 21, clutch end 22, output unit organic working medium outlet 23, generator 3, regenerator 4, the first organic working medium entrance 41, the first organic working medium outlet 42, the second organic working medium entrance 44, the second organic working medium outlet 43, condenser 5, condenser organic working medium entrance 51, condenser organic working medium outlet 52, liquid container 6, organic working medium recycle pump 7, boiler 8, conduction oil entrance 82, conduction oil outlet 81, smoke inlet 83, smoke outlet 84, heat conduction oil circulating pump 100, oil storage tank 200.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
as shown in Figure 1, ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat of the present utility model, comprise the heat exchanger 1 that is connected with thermal source, power take-off 2, the generator 3 that is connected with the clutch end 22 of power take-off 2, organic working medium recycle pump 7, condenser 5, described heat exchanger 1 comprises thermal source entrance 11, thermal source outlet 13, heat exchanger organic working medium entrance 14 and heat exchanger organic working medium outlet 12, power take-off 2 comprises output unit organic working medium entrance 21 and output unit organic working medium outlet 23, heat exchanger organic working medium outlet 12 is connected with output unit organic working medium entrance 21, condenser 5 comprises condenser organic working medium entrance 51 and condenser organic working medium outlet 52, described thermal source comprises boiler 8, described boiler 8 comprises conduction oil entrance 82, conduction oil outlet 81, smoke inlet 83 and smoke outlet 84, be provided with oil duct between conduction oil entrance 82 and conduction oil outlet 81, be provided with the flue gas channel that carries out exchange heat for the conduction oil in flue gas and oil duct between smoke inlet 83 and smoke outlet 84, the conduction oil outlet 81 of boiler 8 is connected with the thermal source entrance 11 of heat exchanger, the thermal source outlet 13 of heat exchanger is connected with the conduction oil entrance 82 of boiler 8 by heat conduction oil circulating pump 100, also comprise regenerator 4, be provided with the first heat exchange road between the first organic working medium entrance 41 of regenerator 4 and the first organic working medium outlet 42, be provided with the second heat exchange road between the second organic working medium entrance 44 of regenerator 4 and the second organic working medium outlet 43, the first organic working medium entrance 41 of regenerator 4 is connected with output unit organic working medium outlet 23, the first organic working medium outlet 42 of regenerator 4 is connected with condenser organic working medium entrance 51, the outlet 52 of condenser organic working medium is connected with the second organic working medium entrance 44 of regenerator 4 by organic working medium recycle pump 7, the second organic working medium outlet 43 of regenerator is connected with heat exchanger organic working medium entrance 14.Above-mentioned condenser can adopt the types of cooling such as air cooling.Above-mentioned regenerator 4 is also a kind of heat exchanger, and its principle is identical with heat exchanger, is used for exactly the heat of the organic working medium in the heat of the organic working medium in the first heat exchange road and the second heat exchange road is exchanged.The flow direction of conduction oil is opposite with the flow direction of organic working medium, and this form is called countercurrent heat-transfer, conducts heat otherwise be called following current.Countercurrent heat-transfer is higher than following current heat transfer efficiency, can effectively reduce the heat exchanger heat exchange area, reduces the device fabrication cost.Therefore be preferably countercurrent heat-transfer.
During use, the smoke inlet of boiler 8 is connected with the vent systems of compressor station combustion machine, and the flue gas that the combustion machine is discharged enters in boiler 8.First make the conduction oil of the oil duct that enters boiler 8 absorb the heat of flue gas by boiler 8, then make conduction oil enter heat exchanger 1 organic working medium in system is heated into gaseous state, conduction oil enters boiler 8 by heat conduction oil circulating pump 100 after the thermal source outlet 13 of heat exchanger 1 is flowed out; The gaseous state organic working medium impels power take-off 2 actings to drive generator 3 generatings, the organic working medium that power take-off 2 is discharged enters condenser 5 through regenerator 4 and is cooled to liquid organic working medium, liquid organic working medium forms the supercooled liquid organic working medium through 7 pressurizations of organic working medium recycle pump, the supercooled liquid organic working medium enters the heat of the gaseous state organic working medium in the first heat exchange road that absorbs regenerator 4 behind the second heat exchange road of regenerator 4, then enters in heat exchanger.
Because organic working medium can be lossy in system, in order to keep the normal circulation of organic working medium in system, need in time to replenish organic working medium in system.As shown in Figure 1, on the basis of the above, also be connected with liquid container 6 between described condenser 5 and organic working medium recycle pump 7, be provided with the organic working medium supplementary device on described liquid container.Above-mentioned organic working medium supplementary device can be a valve, or is one and is with valvular straight tube etc.When needs during to liquid container 6 interior additional organic working medium, but Open valve to the interior additional organic working medium of liquid container 6, replenishes complete rear throttle down and gets final product.Certain above-mentioned organic working medium supplementary device can also comprise a liquid level detector, after the liquid level in liquid container 6 is lower than the standard liquid level, liquid level detector is transferred to control system with signal, and control system is by Open valve, and by transport tube to the interior conveying organic working medium of liquid container 6.
The mode of execution of above-mentioned heat exchanger 1 has multiple, for example can include only a heat exchanger that carries out exchange heat for conduction oil and organic working medium.Be preferably: described heat exchanger 1 comprises preheater 17, vaporizer 16 and the superheater 15 of series connection successively, the thermal source entrance 11 of described heat exchanger 1 and heat exchanger organic working medium outlet 12 all are arranged on superheater 15, and the outlet 13 of the thermal source of heat exchanger 1 and heat exchanger organic working medium entrance 14 all are arranged on preheater 17.
Above-mentioned power take-off 2 can be a decompressor, is preferably: described power take-off 2 is the ORC turbine.When power take-off 2 is the ORC turbine, leak in order to prevent its inner organic working medium, corresponding sealing configuration can be set on the ORC turbine.The sealing structure can comprise medium-tight, mechanical seal or unite use with two kinds.Medium-tight makes and fills sealing medium in sealing configuration namely by corresponding sealing configuration is set, and the pressure of sealing medium can prevent the organic working medium leakage like this greater than the pressure of the organic working medium of gaseous state.Mechanical seal is by a pair of or several the end face of making relative sliding perpendicular to axle is fitted and is equipped with auxiliary seal and reaches the gland seal device of Drain Resistance in the lower maintenance of elastic force (or magnetic force) effect of hydrodynamic pressure and compensation mechanism.Above-mentioned mechanical seal and medium-tight are two kinds of common sealing means.Preferably both are applied in simultaneously on the ORC turbine and use as sealing configuration, sealing effect will be far longer than single effect of planting sealing.For example can medium-tight be set in the periphery of mechanical seal structure.
Loss in use also can occur in conduction oil, simultaneously, the temperature fluctuation of the organic working medium in the lasting uniformity heat exchanger that conduction oil flows has a direct impact, and the temperature fluctuation of organic working medium can affect the physical property of organic working medium again, affects the normal operation of organic working medium.Based on above-mentioned thinking, be connected with oil storage tank 200 between the outlet 13 of the thermal source of described heat exchanger 1 and heat conduction oil circulating pump 100.On oil storage tank 200, polytype oil-inlet mechanism can be set.For example can be a valve, can be oil inlet pipe and valve, can be with the oil inlet pipe of liquid level detector and valve etc.Certainly, also can be provided with the nozzle device such as heat conductive oil inlet, level monitoring meter, nitrogen envelope gas interface on oil storage tank, join by filling pump and heat conductive oil inlet pipe, when needs replenish system's conduction oil, open filling pump, reach to the oil storage tank oiling and add the conduction oil purpose.By oil storage tank 200, can play on the one hand the effect of buffering, guarantee that conduction oil continues circulation smoothly, thereby guarantee that the temperature of organic working medium in heat exchanger fluctuation can not occur, be conducive to protect organic working medium not change because of temperature fluctuation generation physical property; Can in time replenish conduction oil on the other hand.And, but the amount by conduction oil in the oil storage tank control system, and then can come the amount of conduction oil in timely adjust system to guarantee the temperature stabilization of conduction oil according to the temperature of the smoke inlet of boiler, thus can guarantee the temperature stabilization of organic working medium, fluctuation can not appear.
On the basis of the above, in order to prevent the leakage of intrasystem organic working medium, system is in operation process, and the pressure of intrasystem organic working medium is more than or equal to system's external pressure.Namely make the pressure of organic working medium more than or equal to the pressure of external environment condition, the outer gas of anti-locking system enters the physical property of destroying organic working medium in system.Concrete, can select according to system the organic working medium of suitable boiling point, the pressure of the interior organic working medium of feasible system is more than or equal to system's external pressure like this.Such measure is the most favourable for condenser, can guarantee that condenser moves under normal pressure or micro positive pressure condition, reduces the condenser cost of investment.
Claims (5)
1. be used for reclaiming the ORC power generation system of compressor station combustion machine smoke discharging residual heat, comprise the heat exchanger (1) that is connected with thermal source, power take-off (2), the generator (3) that is connected with the clutch end (22) of power take-off (2), organic working medium recycle pump (7), condenser (5), described heat exchanger (1) comprises thermal source entrance (11), thermal source outlet (13), heat exchanger organic working medium entrance (14) and heat exchanger organic working medium outlet (12), power take-off (2) comprises output unit organic working medium entrance (21) and output unit organic working medium outlet (23), heat exchanger organic working medium outlet (12) is connected with output unit organic working medium entrance (21), condenser (5) comprises condenser organic working medium entrance (51) and condenser organic working medium outlet (52), it is characterized in that:
described thermal source comprises boiler (8), described boiler (8) comprises conduction oil entrance (82), conduction oil outlet (81), smoke inlet (83) and smoke outlet (84), be provided with oil duct between conduction oil entrance (82) and conduction oil outlet (81), be provided with the flue gas channel that carries out exchange heat for the conduction oil in flue gas and oil duct between smoke inlet (83) and smoke outlet (84), the conduction oil outlet (81) of boiler (8) is connected with the thermal source entrance (11) of heat exchanger, the thermal source outlet (13) of heat exchanger is connected with the conduction oil entrance (82) of boiler (8) by heat conduction oil circulating pump (100),
also comprise regenerator (4), be provided with the first heat exchange road between the first organic working medium entrance (41) of regenerator (4) and the first organic working medium outlet (42), be provided with the second heat exchange road between the second organic working medium entrance (44) of regenerator (4) and the second organic working medium outlet (43), the first organic working medium entrance (41) of regenerator (4) is connected with output unit organic working medium outlet (23), the first organic working medium outlet (42) of regenerator (4) is connected with condenser organic working medium entrance (51), condenser organic working medium outlet (52) is connected with the second organic working medium entrance (44) of regenerator (4) by organic working medium recycle pump (7), the second organic working medium outlet (43) of regenerator is connected with heat exchanger organic working medium entrance (14).
2. the ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat as claimed in claim 1, it is characterized in that: also be connected with liquid container (6) between described condenser (5) and organic working medium recycle pump (7), be provided with the organic working medium supplementary device on described liquid container.
3. the ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat as claimed in claim 1, it is characterized in that: described heat exchanger (1) comprises preheater (17), vaporizer (16) and the superheater (15) of series connection successively, the thermal source entrance (11) of described heat exchanger (1) and heat exchanger organic working medium outlet (12) all are arranged on superheater (15), and the thermal source of heat exchanger (1) outlet (13) and heat exchanger organic working medium entrance (14) all are arranged on preheater (17).
4. the ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat as claimed in claim 1, it is characterized in that: described power take-off (2) is the ORC turbine, is provided with on described ORC turbine be used to the sealing configuration that prevents that organic working medium from leaking.
5. the ORC power generation system for reclaiming compressor station combustion machine smoke discharging residual heat as claimed in claim 1, is characterized in that: be connected with oil storage tank (200) between the thermal source outlet (13) of described heat exchanger (1) and heat conduction oil circulating pump (100).
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| CN 201320291839 CN203271842U (en) | 2013-05-24 | 2013-05-24 | ORC electricity generation system used for recycling waste heat of smoke discharged by compressor station gas turbine |
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| CN 201320291839 CN203271842U (en) | 2013-05-24 | 2013-05-24 | ORC electricity generation system used for recycling waste heat of smoke discharged by compressor station gas turbine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244212A (en) * | 2013-05-24 | 2013-08-14 | 成都昊特新能源技术有限公司 | ORC electricity generation system for recycling exhaust smoke waste heat of gas turbine in compressor station and electricity generation method thereof |
| CN104481619A (en) * | 2014-12-24 | 2015-04-01 | 辽宁中联能源科技有限公司 | Rankine cycle power generation system capable of realizing efficient utilization of heat energy |
| CN104612917A (en) * | 2015-01-27 | 2015-05-13 | 杭州哲达科技股份有限公司 | System and method for preparing compressed air through solar ORC |
| CN105115330A (en) * | 2015-08-31 | 2015-12-02 | 天津大学 | Phase change evaporator for driving ORC system through industrial waste heat |
| RU2622143C1 (en) * | 2016-04-22 | 2017-06-13 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Method of use of organic rankine cycle plant for providing objects of crude oil treating plant with heat energy |
-
2013
- 2013-05-24 CN CN 201320291839 patent/CN203271842U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244212A (en) * | 2013-05-24 | 2013-08-14 | 成都昊特新能源技术有限公司 | ORC electricity generation system for recycling exhaust smoke waste heat of gas turbine in compressor station and electricity generation method thereof |
| CN104481619A (en) * | 2014-12-24 | 2015-04-01 | 辽宁中联能源科技有限公司 | Rankine cycle power generation system capable of realizing efficient utilization of heat energy |
| CN104612917A (en) * | 2015-01-27 | 2015-05-13 | 杭州哲达科技股份有限公司 | System and method for preparing compressed air through solar ORC |
| CN105115330A (en) * | 2015-08-31 | 2015-12-02 | 天津大学 | Phase change evaporator for driving ORC system through industrial waste heat |
| RU2622143C1 (en) * | 2016-04-22 | 2017-06-13 | Общество с ограниченной ответственностью "ЛУКОЙЛ-ПЕРМЬ" | Method of use of organic rankine cycle plant for providing objects of crude oil treating plant with heat energy |
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