CN1322916A - Vapor condensating heat recovering and utilizing method and equipment - Google Patents
Vapor condensating heat recovering and utilizing method and equipment Download PDFInfo
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- CN1322916A CN1322916A CN 00106278 CN00106278A CN1322916A CN 1322916 A CN1322916 A CN 1322916A CN 00106278 CN00106278 CN 00106278 CN 00106278 A CN00106278 A CN 00106278A CN 1322916 A CN1322916 A CN 1322916A
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Abstract
Based on the principle that the supersonic flow of homogeneous vapor-liquid mixture produces pressure shock wave when it encounters resistance, low pressure vapor is ejected into variable sound velocity booster with normal temperature liquid working medium to become homogeneous vapor liquid mixture with certain pressure. In a vapor condensating heat recoverer, the mixture is condensated into liquid with relatively high temperature while evolving condensating heat to heat normal liquid working medium. The method and equipment of recovering condensating heat of low pressure vapor may be used in supplying heat, refrigerating, power generation, etc.
Description
The present invention relates to a kind ofly, reclaim the low-pressure steam condensation heat with the acoustic velocity-variable supercharging technology, and make it to be used to freeze, the method and apparatus of generating, heat supply.
With steam is the device of power, because exhaust steam pressure is low excessively, the contained latent heat of its steam is difficult to recycle.At present, most widely used Steam Power Equipment is the steam turbine in the Thermal Power Station.Its principle system such as Fig. 1.
In system shown in Figure 1, steam that boiler 1 is produced imports steam turbine 2, and adiabatic Peng work done of expanding drives generator 3 and generates electricity, and externally exports electric energy.The low-pressure steam that steam turbine 2 is discharged enters condenser 4, carries out heat exchange with cooling water, emits heat, is condensed into condensate water.Send into oxygen-eliminating device 6 deoxygenations through condensate pump 5, send into boiler 1 through boiler feed pump 7 again after the deoxygenation and recycle.The low-pressure steam condensation heat that steam turbine 2 is discharged has been taken away in this cyclic process, cooling water, makes the whole heat energy utilization rate in power plant reduce by 50～60%, causes the significant wastage of primary energy.This traditional thermal power generation mode makes the whole heat energy utilization rate in power plant have only 35～40%.
The objective of the invention is to, traditional Thermal Power Station's turbine discharge condensing mode is become change.Create a kind of power plant turbine discharge condensation heat recovery method and corresponding use device, to improve the whole heat energy utilization rate in power plant.
The objective of the invention is to realize by the following method:
Utilize the pump supercharging technology, liquid towards working medium is carried out pressurized treatment, makes liquid refrigerant possess certain pressure, is allowed to condition at circular flow in the steam condensation heat recycling system with its this pressure.
To have the normal temperature liquid refrigerant injection low-pressure steam of certain pressure, enter the acoustic velocity-variable supercharging device jointly, stream-liquid two-phase flow becomes the vapour-liquid homogeneous mixture with elevated pressures after by the acoustic velocity-variable supercharging device, afterwards, import steam condensation heat recover.
The pressure of utilization saturated gas in closed container and temperature equilibrium principle, make the steam condensation under corresponding pressure that enters steam condensation heat recover become condensate water with higher temperature, simultaneously, emit condensation heat, heating normal temperature liquid refrigerant makes it become the liquid refrigerant with higher temperature jointly.
With liquid refrigerant with higher temperature is thermal source, is used to build heating plant, externally heat supply.
As boiler feed water, directly advance the oxygen-eliminating device deoxygenation with liquid refrigerant (for example demineralized water in the power plant), can save the consumption quantity of steam of heating boiler water greatly with higher temperature.
With the liquid refrigerant with higher temperature is thermal source, builds low grade heat energy refrigeration and generation station, can be in order to refrigeration, generating.
Steam condensation heat recycling system of the present invention is when operation, and the liquid refrigerant with higher temperature in the steam condensation heat recover becomes the liquid refrigerant with certain pressure and temperature after the pressurization of liquid refrigerant delivery pump.Pump into heat exchanger, carry out heat exchange with normal temperature secondary thermophore, externally quantity of heat given up simultaneously, becomes the normal temperature liquid refrigerant with certain pressure.Enter acoustic velocity-variable supercharging device injection low-pressure steam.The stream-liquid two-phase flow body becomes the vapour-liquid homogeneous mixture with elevated pressures by behind the acoustic velocity-variable supercharging device, imports steam condensation heat recover.In steam condensation heat recover, steam condensation under corresponding pressure becomes the condensate water with higher temperature, simultaneously, emits condensation heat, and heating normal temperature liquid refrigerant makes it become the liquid refrigerant with higher temperature jointly.Recycle for the next one, circulation is continued.
Steam condensation heat recoverying and utilizing method of the present invention is used for power plant turbine discharge condensation heat and recycles engineering, can make the whole heat energy utilization rate in power plant bring up to 50～60% by 35～40%.
Below in conjunction with accompanying drawing steam condensation heat recoverying and utilizing method of the present invention and device are carried out the detail explanation.
Fig. 1 is the processing method schematic diagram to the power plant turbine discharge in the prior art.
Fig. 2 is first embodiment of steam condensation heat recoverying and utilizing method of the present invention and device.
Fig. 3 is second embodiment of steam condensation heat recoverying and utilizing method of the present invention and device.
Fig. 4 is the 3rd embodiment of steam condensation heat recoverying and utilizing method of the present invention and device.
Fig. 2 is first embodiment of steam condensation heat recoverying and utilizing method of the present invention and device, and steam condensation heat recycle device of the present invention has comprised a steam condensation heat recover, a liquid refrigerant delivery pump, a heat exchanger and an acoustic velocity-variable supercharging device.
In Fig. 2, label 1 has been represented steam condensation heat recover.
The outlet of steam condensation heat recover 1 and the arrival end of liquid refrigerant delivery pump 2 join.The inner chamber arrival end of the port of export of liquid refrigerant delivery pump 2 and heat exchanger 3 joins.The function of delivery pump 2 is the liquid refrigerant superchargings with higher temperature of will come out from steam condensation heat recover 1, the liquid refrigerant after the supercharging is pumped into the inner chamber of heat exchanger 3 again.
Liquid refrigerant with higher temperature is under pressure during the inner chamber by heat exchanger 3, and the secondary normal temperature thermophore that flows through with the exocoel of heat exchanger 3 carries out heat exchange.Secondary normal temperature thermophore is from the exocoel of the B end inflow heat exchanger 3 of heat exchanger 3, and the liquid refrigerant with higher temperature that passes through with inner chamber carries out exchange heat.Secondary normal temperature thermophore absorbs heat, and temperature raises, and becomes the secondary thermophore with higher temperature, and from the exocoel C end output of heat exchanger 3, externally heat supply user uses.The liquid refrigerant with higher temperature of inner chamber is emitted heat, and temperature reduces, and becomes the normal temperature liquid refrigerant with certain pressure, imports the acoustic velocity-variable supercharging device 4 that joins with it from the inner chamber output of heat exchanger 3.
The top arrival end of the port of export of acoustic velocity-variable supercharging device 4 and steam condensation heat recover 1 joins.Acoustic velocity-variable supercharging device 4 also has the input that inlet is a low-pressure steam.When the normal temperature liquid refrigerant with certain pressure when the acoustic velocity-variable supercharging device 4, it is as power source, the low-pressure steam that jetting steam caused user discharges.In acoustic velocity-variable supercharging device 4, vapour-liquid two-phase homogeneous mixture flows with supersonic speed, makes it meet with resistance, the initiation pressure shock wave, and the stream-liquid two-phase flow body from 4 outputs of acoustic velocity-variable supercharging device, enters steam condensation heat recover 1 with higher pressure.
Enter the steam in the liquid-vapor mixture with elevated pressures of steam condensation heat recover 1, condensation under corresponding pressure becomes the condensate water with higher temperature.Simultaneously, emit condensation heat, heating normal temperature liquid refrigerant, make its its with becoming liquid refrigerant with higher temperature.
With the liquid refrigerant with higher temperature is thermal source, by liquid refrigerant delivery pump 2 a thermal source thermophore is pumped into heat exchanger 3, by the external quantity of heat given up of heat exchange.Liquid refrigerant with higher temperature is emitted heat, becomes the normal temperature liquid refrigerant, flows out from heat exchanger 3, enters the systemic circulation operation.
With the liquid refrigerant with higher temperature is thermal source, by thermal source thermophore outlet D and E heat offer refrigeration, user and other hot users generate electricity.
Fig. 3 is second embodiment of steam condensation heat recoverying and utilizing method of the present invention and device, and steam condensation heat recycle device of the present invention comprised---steam condensation heat recover,---condensate pump and acoustic velocity-variable supercharging device.
The purpose of present embodiment is, traditional power plant turbine discharge condensing mode is changed, heat the condensate water that another part is formed by the turbine discharge condensation with a part of turbine discharge condensation heat, make it become condensate water jointly with higher temperature, be used for boiler feedwater, to save boiler feedwater heating, the used quantity of steam of deoxygenation.
Among Fig. 3, label 2 is the steam turbine in traditional power plant, and the low-pressure steam part that its afterbody is discharged is drawn, and imports acoustic velocity-variable supercharging device 8.The low-pressure steam that another part steam turbine 2 is discharged enters condenser 4 and carries out heat exchange with cooling water, emits condensation heat, is condensed into the normal temperature condensate water, through condensate pump 10, pumps into acoustic velocity-variable supercharging device 8.
The arrival end of the outlet of acoustic velocity-variable supercharging device 8 and steam condensation heat recover 9 joins.Import steam condensation under relevant pressure of steam condensation heat recover 9, become the condensate water with higher temperature, simultaneously, emit condensation heat, heating normal temperature condensate water makes it become the condensate water with higher temperature jointly.
The port of export of steam condensation heat recover 9 and the arrival end of condensate pump 10 join.Condensate water with higher temperature pumps into oxygen-eliminating device 6 through condensate pump 10, pumps into boiler 1 by boiler feed pump 7 after the deoxygenation, recycles.
Fig. 4 is the 3rd embodiment of steam condensation heat recoverying and utilizing method of the present invention and device.Steam condensation heat recycle device of the present invention has comprised a steam condensation heat recover, a condensate pump, an acoustic velocity-variable supercharging device and a low grade heat energy refrigeration and generation station arrangement.
The purpose of present embodiment is, traditional power plant turbine discharge condensing mode become change.With its steam discharge condensation heat heating demineralized water, be the external heat supply of thermal source and supply the power plant boiler water with its heated demineralized water, to improve the whole heat energy utilization rate in power plant.
Among Fig. 4, label is 2 steam turbine, and the low-pressure steam that its afterbody is discharged no longer (or part) enters condenser 4, but enters acoustic velocity-variable supercharging device 8 by delivery line direct (or part).
Another inlet of acoustic velocity-variable supercharging device 8 and the exocoel port of export of the evaporimeter 15 in the low grade heat energy refrigeration and generation station equipment join.The arrival end of the outlet of acoustic velocity-variable supercharging device 8 and steam condensation heat recover 9 joins.
The normal temperature desalted water with certain pressure of being derived by low grade heat energy refrigeration and generation station equipment evaporimeter 15 exocoels enters acoustic velocity-variable supercharging device 8, the low-pressure steam that injection is discharged by steam turbine 2 afterbodys.When vapour-liquid two-phase mixture is derived from acoustic velocity-variable supercharging device 8, become vapour-liquid homogeneous mixture with elevated pressures.
After the vapour-liquid homogeneous mixture entered steam condensation heat recover 9, steam condensation under relevant pressure became the condensate water with higher temperature, simultaneously, emits condensation heat, and heating normal temperature demineralized water makes it become the demineralized water with higher temperature jointly.
The port of export of steam condensation heat recover 9 and the arrival end of condensate pump 10 join.Condensate pump has two, and the arrival end of the port of export of a condensate pump 10 and oxygen-eliminating device 6 joins.The arrival end of the port of export of another condensate pump 10 and evaporimeter 15 exocoels joins.
Demineralized water with higher temperature pumps through condensate pump 10, enters oxygen-eliminating device 6, sends into boiler as boiler feed water by boiler feed pump 7 after deoxygenation, recycles.
Demineralized water with higher temperature pumps through condensate pump 10, enters the exocoel of evaporimeter 15, carries out heat exchange with low boiling working fluid by inner chamber.Emit heat, temperature reduces, and becomes the normal temperature demineralized water with certain pressure, derive from the exocoel outlet of evaporimeter 15, enter acoustic velocity-variable supercharging device 8 injection low-pressure steams, vapour-liquid two-phase homogeneous mixture is derived from acoustic velocity-variable supercharging device 8, enter steam condensation heat recover 9, afterwards, the recirculation operation.
The enforcement of present embodiment will make the whole heat energy utilization rate in power plant improve 25%.
The top several embodiment that introduce, the tool that just utilizes steam condensation heat recoverying and utilizing method to carry out the recycling of steam condensation heat is stopped example.Certainly, those of ordinary skill can obtain other configuration without creationary design under thought of the present invention inspires, and these all belong to the scope of patent protection of the inventive method and device.
Claims (7)
1, a kind of steam condensation heat recoverying and utilizing method is characterized in that this method may further comprise the steps:
Supercharging: utilize the pump supercharging technology, liquid towards working medium is carried out pressurized treatment, makes liquid refrigerant possess certain pressure, relies on this pressure to make its circular flow in steam condensation heat recycling system.
Injection: to have the normal temperature liquid refrigerant of certain pressure, the injection low-pressure steam enters the acoustic velocity-variable supercharging device jointly, makes it become the vapour-liquid homogeneous mixture with certain pressure.
Condensation: pressure and the temperature equilibrium principle of utilizing saturated gas in closed container, make the steam condensation under corresponding pressure that enters steam condensation heat recover, emit condensation heat, heating normal temperature liquid refrigerant makes it become the liquid refrigerant with higher temperature jointly.
2, a kind of steam condensation heat recoverying and utilizing method according to claim 1 is characterized in that, and is further comprising the steps of:
Heat exchange: the heat that the liquid refrigerant with higher temperature in the steam condensation heat recover possesses, externally export, make liquid refrigerant become the normal temperature liquid refrigerant with higher temperature by heat-exchange apparatus.To guarantee that the low-pressure steam condensation heat is able to abundant recycling.
3, a kind of steam condensation heat recoverying and utilizing method according to claim 2 is characterized in that, the normal temperature liquid refrigerant that the injection low-pressure steam is used can be light water, low boiling working fluid, desalted water or other liquid.
4, a kind of steam condensation heat recoverying and utilizing method according to claim 3 is characterized in that the condensation heat of emitting when the heat that is reclaimed is the low-pressure steam condensation.
5, a kind of steam condensation heat recoverying and utilizing method according to claim 4 is characterized in that, the low-pressure steam condensation heat that is reclaimed is used for refrigeration, generating, heat supply or other uses thermal field institute.
6, a kind of steam condensation heat recoverying and utilizing method according to claim 5 is characterized in that, a thermal source heat-carrying by heat-exchange apparatus not is the liquid working substance with higher temperature, by becoming the normal temperature liquid refrigerant behind the heat-exchange apparatus.
7, a kind of steam condensation heat recycle device comprises---steam condensation heat recover---liquid refrigerant delivery pump---heat exchanger.
It is characterized in that, also comprise---the acoustic velocity-variable supercharging device.
The outlet of steam condensation heat recover 1 and the arrival end of liquid refrigerant delivery pump 2 join, and the inner chamber arrival end of the port of export of liquid refrigerant delivery pump 2 and heat exchanger 3 joins.
The input of heat exchanger 3 exocoels is the input that normal temperature secondary heat-carrying is stopped; Output is the output of secondary thermophore; The output of heat exchanger 3 inner chambers and the arrival end of acoustic velocity-variable supercharging device 4 join.
Acoustic velocity-variable supercharging device 4 also has an inlet and low-pressure steam to join, and the output of acoustic velocity-variable supercharging device 4 and steam condensation heat recover 1 arrival end join.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106278 CN1322916A (en) | 2000-05-08 | 2000-05-08 | Vapor condensating heat recovering and utilizing method and equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106278 CN1322916A (en) | 2000-05-08 | 2000-05-08 | Vapor condensating heat recovering and utilizing method and equipment |
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| CN1322916A true CN1322916A (en) | 2001-11-21 |
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| CN 00106278 Pending CN1322916A (en) | 2000-05-08 | 2000-05-08 | Vapor condensating heat recovering and utilizing method and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294703B (en) * | 2007-04-26 | 2011-02-23 | 三威塑胶制品(珠海)有限公司 | Steam generator and uses thereof |
| CN101324329B (en) * | 2008-06-27 | 2011-08-24 | 南京航空航天大学 | Additional energy type energy-saving boiler system and energy-saving method |
| CN104141582A (en) * | 2014-06-30 | 2014-11-12 | 广西大学 | High-pressure liquid work applying type organic Rankine cycle power generating system |
-
2000
- 2000-05-08 CN CN 00106278 patent/CN1322916A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294703B (en) * | 2007-04-26 | 2011-02-23 | 三威塑胶制品(珠海)有限公司 | Steam generator and uses thereof |
| CN101324329B (en) * | 2008-06-27 | 2011-08-24 | 南京航空航天大学 | Additional energy type energy-saving boiler system and energy-saving method |
| CN104141582A (en) * | 2014-06-30 | 2014-11-12 | 广西大学 | High-pressure liquid work applying type organic Rankine cycle power generating system |
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