KR20170142348A - Steam suplly system and method for steam supplying - Google Patents

Abstract

The present application relates to a steam supplying system using a steam heat pump of a chemical process and a steam supplying method thereof. Accordingly, the present invention is able to reduce the amount of steam used in a chemical process. To this end, the present invention includes a steam distributing device, a turbine, a steam demanding device, and a heat pump.

Description

A steam supply system and a steam supply method using a steam heat pump. {STEAM SUPLLY SYSTEM AND METHOD FOR STEAM SUPPLYING}

The present application relates to a steam supply system and a steam supply method utilizing a steam heat pump of a chemical process.

In chemical processes, steam is a heat source for energy supply, transporting and drying reactants or products, stripping to remove impurities from the process, preventing the product from hardening or increasing viscosity due to heat loss in the tank or piping And steam tracing for use in a variety of applications. In some cases, a turbine is used instead of a motor as a driving source of a pump or a compressor for transporting products or raw materials. Such steam is an energy resource that accounts for a large portion of the production cost, is used as an efficient energy source, and a large amount of steam is used.

The steam used in the process is produced from the steam generated during the cooling of the vapor, from the outside of the cogeneration plant, or through the steam boiler. Particularly, in chemical processes, high temperature and high pressure steam are mainly used and require a large amount of energy consumption. Therefore, it is required to efficiently manage the steam used in the process so as to reduce the amount of used steam.

Patent Document 1: JP-A-2009-198072

The present application provides an efficient steam supply system that reduces the amount of steam used in the process of using steam and a method of supplying steam using the steam supply system.

The present application relates to a steam supply system and a steam supply method.

According to the steam supply system of the present application, steam used in an industrial field or various chemical processes is condensed after being used in a steam demand apparatus and used as a heat source of a heat pump, or the waste heat of other processes is used as a heat source of a heat pump , It is possible to reduce the amount of steam used for the process, thereby maximizing the energy saving efficiency. Also, according to the steam supply system of the present application, it is possible to maximize the energy saving efficiency by supplying steam, which requires a reduced pressure in the process, to the turbine to produce and utilize the energy.

Hereinafter, the present application will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, and are not intended to limit the scope of the present application

In the present specification, each device may be connected through a pipe, and the "line" may be substantially the same as a pipe, and "flow" may mean movement of fluid through a line or pipe, Lines, piping, and flow may share the same reference numerals.

1 is a schematic view schematically showing an exemplary steam supply system of the present application. Referring to Figure 1, an exemplary steam supply system according to the present application may include a steam generator, a steam distributor, a steam demander, a turbine, and a heat pump. The steam supply system may include a first Steam can be produced and distributed to the steam demanding device after passing through the turbine in the steam distribution device. The steam used in the steam demand apparatus is discharged as a high-temperature fluid, and the fluid is supplied to a heat pump, and the heat pump can generate the second steam using the waste heat of the fluid and supply the steam to the steam distribution apparatus .

The steam generating device is a device capable of producing and supplying steam. The type and form of the steam generating device are not particularly limited. The steam distributing device may be a device for distributing the steam supplied from the steam generating device to one or more steam demand devices For example, steam piping. The steam demand apparatus may include various apparatuses using steam, for example, a heating apparatus using steam as a heat source, or the like.

The heat pump absorbs heat from a low-temperature heat source by utilizing compression and expansion of the refrigerant, and emits high-temperature heat. Various heat pumps known in the art can be used. For example, an open-loop heat pump or a closed- Loop heat pump. The heat pump can use the waste heat of the fluid or other process discharged from the steam demand apparatus as a heat source to heat the condensed water of the water or the used steam from the outside and discharge the steam as the second steam. The second steam flowing out of the heat pump can be introduced into the steam distribution device and supplied to the steam consumer. Thus, the total steam consumption can be reduced by recovering the waste heat from the steam used in the process to produce steam.

The turbine may refer to a device for converting the energy of a fluid flow into a mechanical power. The turbine may be a rotary motor that rotates a shaft by impinging on a plurality of blades or wings a fluid flow, And may be, for example, a steam turbine. The turbine generator is connected to the turbine generator to generate electric power and supply the electric power to the heat pump or the compressor, or directly to the heat pump or the compressor. By supplying the energy to the heat pump or the compressor using the turbine in this way, it is possible to reduce the amount of steam used and also reduce the energy used in the heat pump or the compressor.

According to the heat recovery apparatus and method of the present application, it is possible to generate steam using a low-temperature heat source of 120 ° C or lower, which is discharged from an industrial site or various chemical processes, for example, a production process of petrochemical products, Since steam can be used in various processes, it is possible to reduce the amount of high temperature steam used as an external heat source for use in a reactor or a distillation column. Also, by using a turbine to produce energy and supplying it to a heat pump or a compressor, energy saving efficiency can be maximized.

1 is a schematic view schematically showing a steam supply system of the present application.
2 is a block diagram illustrating a conventional steam supply system.
3 is a schematic diagram showing a steam supply system in which a heat pump is introduced into a conventional steam supply system.
4 is a configuration diagram showing a steam supply system according to an exemplary embodiment of the present application.

Hereinafter, the present application will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

4 is a diagram schematically showing a steam supply system according to an exemplary embodiment of the present application. 4, the steam supply system according to the present application includes a first steam generator 103; A steam distribution device (203, 303, 403) for distributing the first steam supplied from the first steam generator (103); Turbines (5003, 6003) for producing energy using steam distributed from the steam distributing devices (203, 303, 403); (503, 603, 703) using steam dispensed from the steam distributing devices (203, 303, 403) and a second condensing fluid flowing out after being used from the steam demanding device And may include a heat pump that produces heat.

In the above example, the turbines 5003 and 6003 may be power generators. For example, the turbine may be a hydraulic turbine capable of converting the mechanical energy of the fluid flowing through the pipes (5003, 6003) into electrical energy. When the turbine is used, the turbine is used in a heat pump or a compressor Power can be produced by itself, so that the energy efficiency of the steam supply system can be improved. Also, in one example, the turbine may be directly powered by a heat pump or compressor.

The steam generator 101 may be a coal boiler, a gas boiler, a reactor heat recovery apparatus, or a gas turbine heat recovery apparatus, but is not limited thereto. The steam distribution devices 201, 301, and 400 may be devices that divide the supplied steam into one or more steam demand devices, and may include, for example, one or more steam pipes. The steam demand apparatuses 501, 601, and 701 may be a reboiler of a distillation tower, a heater of a reactor, or various heaters, but the present invention is not limited thereto. The heat pump may be an open loop heat pump or a closed loop heat pump, but is not limited thereto.

In the above example, the devices may be fluidly connected through piping. The piping introduces the steam flowing out of the steam generator 103 into the steam distribution apparatus 203 and the steam flowing out of the steam distribution apparatus 203 into the steam demand apparatus 503, And may be fluidically connected to draw steam used in the steam demanding device into the heat pump.

The heat pump can use the waste heat of the process as a heat source. For example, condensed water after use in a steam demand apparatus can be used as a heat source. The condensed water flowing into the heat pump is heat-exchanged with the refrigerant of the heat pump, and the refrigerant of the heat pump is heated to heat-exchange the condensed water of water supplied from the outside or the used steam, The condensed water is converted into steam and discharged, and the discharged steam can be pressurized by the compressor and introduced into the steam distribution device.

As the compressor, various compression devices known in the art may be used without limitation, as long as the compressor is capable of compressing the gas phase flow. In one example, the compressor may be a compressor, but is not limited thereto.

In one example, the steam supply system of the present application may include a first steam demanding apparatus 503, a second steam demanding apparatus 603, and turbines 5003 and 6003 that have different required pressures. The steam separated and discharged from the steam distribution apparatus flows into the first steam demand apparatus 503 and the turbines 5003 and 6003 and the steam that has passed through the turbines 5003 and 6003 flows into the second steam demand apparatus 603 ). ≪ / RTI >

In one example, the present steam supply system includes a re-evaporator 533, a third steam demanding device 703, a first steam distribution device 203, a second steam distribution device 303, a third steam distribution device A second pressure drop device 403, a first pressure drop device 223, and a second pressure drop device 333. The first steam distribution device 203 separates and flows the introduced steam to the first steam demand device 503, the turbines 5003 and 6003 and the first pressure drop device 223, The steam that is decompressed through the device 223 and the turbines 5003 and 6003 flows into the second steam distribution device 303 and the steam that has flowed into the second steam distribution device 303 flows into the second steam demand device 603 and the second pressure drop device 333 and the steam reduced in pressure through the second pressure drop device 333 can be introduced into the third steam demand device 703. [ The condensed water flowing out from the first steam demand apparatus 503 can be introduced into the re-evaporator 533, and the steam re-evaporated from the condensed water flows into the third steam distribution apparatus 403, and the remaining condensed water is recovered . Also, the condensed water flowing out from the second steam demand apparatus 603 can be introduced into the re-evaporator 633, the steam re-evaporated from the condensed water flows into the third steam distribution apparatus 403, Can be recovered.

The pressure drop devices 223 and 333 may be, for example, control valves installed in piping through which the steam flowing out of the steam distribution device flows. The re-evaporator (533, 633) is under reduced pressure to condensate the high temperature may be a device to separate a flash steam and condensed water, the re-evaporator is from 140 to 160 ℃ condensate of 245 ℃, 3.3 to 4.2kg / cm ² G Steam can be separated and flowed out.

The heat pump includes a first heat exchanger 1003, a compressor 2003, a second heat exchanger 1203, a third heat exchanger 1103 and a pressure drop device 1123 which are fluidly connected through a pipe through which refrigerant flows, The refrigerant flow flowing into the first heat exchanger 1003 is heat exchanged with the first fluid flow 833 and the refrigerant flow 1013 flowing out of the first heat exchanger flows into the third heat exchanger 1103 And the refrigerant flow 2013 flowing from the compressor 2003 flows into the second heat exchanger 1203 and flows into the second fluid flowing into the second heat exchanger 1203, And the refrigerant flow 1213 flowing out of the second heat exchanger 1203 flows into the pressure reducing device 1123 after being introduced into the third heat exchanger 1103, The refrigerant flow 1133 flowing out of the descending device 1123 flows into the first heat exchanger 1003 The refrigerant flow 1013 flowing out of the first heat exchanger 1003 and the refrigerant flow 1213 flowing out of the second heat exchanger can be heat-exchanged in the third heat exchanger 1103.

The first heat exchanger 1003 is included in the heat pump of the present application in order to heat exchange the refrigerant flow with the flow of the fluid flowing from the outside and the refrigerant is vaporized through the heat exchange and then flows into the first heat exchanger 1003 The first heat exchanger 1003 may flow out of the first heat exchanger 1003 with a relatively high temperature gas flow than the refrigerant flow flowing into the first heat exchanger 1003. The term " gas phase " means a state in which the gas component flow is rich among all the components of the refrigerant flow, for example, a state in which the mole fraction of the gas component stream in the entire refrigerant flow component is 0.9 to 1.0.

The first fluid stream 833 flowing into the first heat exchanger 1003 may be, for example, a waste heat stream or a stream of condensate that has passed through a condenser, and the waste heat stream may, for example, Cooling water, but is not limited in this respect. In the present application, a waste heat stream of a low-temperature heat source in a sensible state at a temperature of 120 ° C or lower, for example, 50 to 120 ° C, can be preferably used.

For example, a first fluid stream 833 such as a refrigerant stream 1133 and a waste heat stream may flow into the first heat exchanger 1003 through a fluid-connected pipe, and the flow of the introduced refrigerant 1133 and / The first fluid flow 833 may be exiting the first heat exchanger 1003 through the fluid-connected pipe after mutual heat exchange in the first heat exchanger 1003.

The temperature of the first fluid stream 833 flowing into the first heat exchanger 1003 may be in the range of 50 ° C to 120 ° C, for example 55 ° C to 75 ° C, 90 ° C to 105 ° C, 60 ° C to 85 ° C, Lt; 0 > C to 100 < 0 > C, but is not particularly limited thereto. The temperature of the refrigerant flow 1013 flowing out of the first heat exchanger 1003 may be in the range of 40 ° C to 110 ° C, for example, 45 ° C to 65 ° C, 80 ° C to 95 ° C, 50 ° C to 75 ° C, Or 60 ° C to 90 ° C, but is not particularly limited thereto.

In this case, the temperature of the first fluid flow 1013 flowing out after the heat exchange with the refrigerant flow in the first heat exchanger 1003 is 45 ° C to 115 ° C, for example, 50 ° C to 70 ° C and 85 ° C To 100 占 폚, 55 占 폚 to 80 占 폚, or 65 占 폚 to 95 占 폚, but is not particularly limited thereto.

The second heat exchanger 1203 is included in the heat pump of the present application in order to exchange heat between the refrigerant flow 2013 flowing out of the compressor 2003 and the second fluid flow 1223 flowing from the outside, Through the heat exchange, the refrigerant can be discharged as a relatively low-temperature liquid stream as compared with the refrigerant flow 2013 flowing out of the compressor after being condensed, and the second fluid flow 1223 is generated when the refrigerant is condensed It can absorb latent heat. The term "liquid phase" as used herein means a state in which the liquid component flow is rich in the entire refrigerant flow component, for example, a state in which the mole fraction of the liquid component flow in the entire refrigerant flow component is 0.9 to 1.0.

In one example, the second fluid entering the second heat exchanger 1203 may be a make-up water or a condensate of steam used, in which case the heat exchanger The water or condensed water absorbs the latent heat generated by the refrigerant at the time of condensation and is vaporized and discharged to the second steam.

For example, a refrigerant flow 2013 flowing out of the compressor 2003 through a fluid-connected pipe and a second fluid flow 1223 exchanging heat with the refrigerant flow 2013 are introduced into the second heat exchanger 1203, And the introduced refrigerant flow 2013 and the second fluid flow 1223 are mutually heat-exchanged in the second heat exchanger 1203 and are then introduced into the second heat exchanger 1203 through the fluid- Respectively.

The temperature and the pressure of the second fluid stream 1223 flowing into the second heat exchanger 1203 are not particularly limited and may be set to a value that allows the second fluid stream having various temperatures and pressures to flow into the second heat exchanger 1203 have. For example from 20 to 120 캜, for example from 20 캜 to 80 캜, or from 70 캜 to 100 캜 and from 0.1 to 20 kgf / cm ² g, for example from 2 to 10 kgf / cm ² g The second fluid flow 1223 can be introduced into the second heat exchanger 1203 at a pressure of about < RTI ID = 0.0 >

In one example, the high-temperature high-pressure refrigerant 2013 discharged from the compressor 2003 and the second fluid flow 1233 heat-exchanged in the second heat exchanger 1203 are heated at a temperature of 100 ° C to 140 ° C, for example, A second steam having a pressure of from 0 to 2.5 kgf / cm ² g, for example from 1 to 2 kgf / cm ² g, at a temperature of from 100 to 110 캜, from 105 캜 to 125 캜, or from 110 캜 to 130 캜 And may be discharged from the second heat exchanger 1203.

In one example, the second steam flowing out of the second heat exchanger 1203 may be introduced into the compressor. The second steam flowing out of the second heat exchanger 1203 passes through the steam distribution device and is separated and discharged to be introduced into the intermediate pressure compressor and the low pressure compressor. The second steam flowing out of the compressor may be introduced into the third steam distribution device 403. The second steam flowing out of the intermediate pressure compressor and flowing into the second steam distribution device is heated at a temperature of 170 ° C to 350 ° C, for example, 160 ° C to 175 ° C, 170 ° C to 200 ° C, or 180 ° C to 190 ° C, May be steam having a pressure of 7 to 20 kgf / cm ² g, for example 8 to 12 kgf / cm ² g. The second steam flowing out of the low pressure compressor 4103 and flowing into the third steam distribution device 403 is heated to a temperature of 150 to 240 ° C, for example, 155 to 175 ° C, 180 to 220 ° C, or 185 ℃ to a temperature of 215 ℃ and 3 to 7 kgf / cm2g, for example, be steam having a pressure of 4 to 5.5 kgf / cm ² g.

The present application also provides a steam supply method.

Exemplary methods of supplying steam can be performed by the steam supply system described above, through which, as described above, can be performed at a temperature of 120 < 0 > C or lower, which is discharged from industrial sites or various chemical processes, It is possible to generate steam by using low-level heat source without throwing away, and since the generated steam can be used for various processes, it is possible to reduce the amount of high-temperature steam used as an external heat source for the reactor or the distillation column, .

According to an embodiment of the present invention, there is provided a method of supplying steam using the steam supply system, wherein a first steam supplied from a first steam generator is separated and discharged from a steam distribution apparatus, The steam demand device and the turbine, the condensed water flowing out after being used by the steam demand device and the turbine is introduced into the heat pump, and the heat of the condensed water is transferred to the heat demand device and the turbine, Producing a second steam; And introducing the second steam into the steam distribution device.

In the steam supply method of the present application, the details of the steam distribution device, the steam supply device, the heat pump, the turbine, and the compressor are the same as those described in the above-described steam supply system.

In one example, the energy produced by the turbine may be 0.1 to 10 MW, 0.2 to 8 MW, and 0.3 to 7 MW, but is not limited thereto.

In one example, the temperature of the condensate entering the heat pump may be from 50 ° C to 120 ° C, for example from 55 ° C to 75 ° C, from 90 ° C to 105 ° C, from 60 ° C to 85 ° C, or from 70 ° C to 100 ° C But is not limited thereto.

In one example, the high-temperature high-pressure refrigerant 2011 flowing out of the compressor 2001 and the water 1231 exchanged in the second heat exchanger 1201 are heated to 100 ° C to 140 ° C, for example, A second steam having a temperature of 110 ° C, 105 ° C to 125 ° C, or 110 ° C to 130 ° C and a pressure of 0 to 2.5 kgf / cm ² g, for example, 1 to 2 kgf / cm ² g, (1201). ≪ / RTI >

In one example, the second steam flowing out of the heat pump may be introduced into the compressors 4001 and 4101. The second steam flowing out of the heat pump passes through the steam distributor 3001 and is separated and discharged to be introduced into the intermediate pressure compressor 4001 and the low pressure compressor 4101. The steam discharged from the compressors 4001 and 4101 may be introduced into the second steam distribution device 301 or the third steam distribution device 400. The steam flowing out from the intermediate pressure compressor 4001 and flowing into the second steam distribution device 301 is heated to a temperature of 170 to 350 ° C, for example, 160 to 175 ° C, 170 to 200 ° C, or 180 to 190 ° C ℃ temperature and 7 to 20 kgf / cm2g, for example, may be steam having a pressure of 8 to 12 kgf / cm ² g. The steam flowing out of the low pressure compressor 4101 and flowing into the third steam distribution device 301 is heated to a temperature of 150 to 240 ° C, for example, 155 to 175 ° C, 180 to 220 ° C, temperature of 215 ℃ and 3 to 7 kgf / cm2g, for example, be steam having a pressure of 4 to 5.5 kgf / cm ² g.

Hereinafter, the present application will be described in more detail by way of examples according to the present application and comparative examples not complying with the present application, but the scope of the present application is not limited by the following examples.

<Examples>

The steam supply system of FIG. 4 was used to supply steam to each steam application site.

Steam generating apparatus (103) 290 ℃, to separate outlet steam of 35.8 kgf / cm ² g in the first steam distribution device 203, a first steam demand device 503 and the pressure drop device 223, and a turbine supplied by the (5003, 6003). The steam which is decompressed at 290 ° C and 13.3 kgf / cm ² g through the pressure drop device 223 and the turbines 5003 and 6003 is separated and discharged from the second steam distribution device 303 to be supplied to the second steam demand device 603, And the pressure drop device 333. The steam reduced to 294.7 ° C. and 3.9 kgf / cm ² g through the pressure drop device 333 was introduced into the third steam demand device 703. The steam used in the first steam consumer 503 is separated into steam and condensed water in the re-evaporator 533 and the separated steam of 3.9 kgf / cm ² g is introduced into the third steam distributor 403 And the condensed water was introduced into the re-evaporator 743. The steam used in the second steam demanding apparatus 603 is separated into steam and condensed water of 151.4 ° C. and 3.9 kgf / cm ² g in the re-evaporator 633, and the separated steam is separated from the third steam distribution apparatus 403, And the condensed water was introduced into the re-evaporator 743.

The condensed water at 105 ° C recovered through the re-evaporator 743 is supplied to the heat exchanger and heat-exchanged with the refrigerant. Heat exchange and pressurization are performed in the heat pump so that the refrigerant in the high temperature and high pressure state and the second fluid stream 1223 are heat- And the second fluid stream 1221 is heated by the heat pump and discharged into the steam. The steam is introduced into the medium pressure compressor and the low pressure compressor to generate steam at 13.3 kgf / cm ² g and 208.5 ° C, 3.9 kgf / cm ² g And then introduced into the second steam distribution device 303 and the third steam distribution device 403.

The turbines 5003 and 6003 were connected to a generator to produce a power of 3.0MW and supplied it as a heat pump.

&Lt; Comparative Example 1 &

Using the steam supply diagram of FIG. 2, steam was supplied to each steam consumer. Compared to the above example, steam was supplied under the same conditions as the steam supply system according to the present application, except that the condensate was introduced into the heat pump and the turbine was used to produce electric power.

&Lt; Comparative Example 2 &

Using the steam supply diagram of FIG. 3, steam was supplied to each steam consumer. The steam was supplied under the same conditions as the steam supply system according to the present application, except that the turbine was used to generate electric power in comparison with the above embodiment.

Steam supply Example Comparative Example 1 Comparative Example 2 Boiler HP 94.1 T / H HP 99.9 T / H HP 94.1 T / H Re-evaporator LP 20 T / H LP 20 T / H LP 20 T / H Heat pump MP 2.9 T / H, LP 2.9 T / H - MP 2.9 T / H, LP 2.9 T / H Heat pump power consumption 0 0 1416

As shown in Examples and Table 1, it can be seen that when the steam is supplied using the steam supply system according to the embodiment of the present application, the amount of steam used can be reduced to a maximum of 5.8 T / H compared to Comparative Example 1, It can be seen that the energy of 1416 kW of energy supplied to the heat pump can be saved as compared with the comparative example 2.

200, 201, 203: a first steam distribution device
300, 301, 303: a second steam distribution device
400, 4033: Third steam distribution device
220, 221, 223, 330, 331, 333, 1121, 1123: pressure drop device
500, 501, 503: First Steam Demand Source
600, 601, 603: Second Steam Demand Side
700, 701, 703: Third Steam Demand Source
530, 531, 533, 630, 631, 633, 740, 741, 743:
1001, 1003: first heat exchanger
1201, 1203: a second heat exchanger
1101, 1103: a third heat exchanger
831, 833: a first fluid flow line
1011, 1111, 1131: first refrigerant line
1131, 1211, 3011: the second refrigerant line
1221: second fluid flow line
4001, 4103: compressor
5003, 6003: Turbine

Claims (16)

A first steam generator;
A steam distributor for distributing the first steam supplied from the first steam generator;
A turbine producing energy using steam dispensed from the steam distribution device;
At least one steam demanding device using steam dispensed from the steam distribution device;
A heat pump for producing a second steam by using waste heat of condensed water or other process flowing out after being used from the steam demand apparatus; And
And the second steam flows into the steam distribution device.
The method according to claim 1,
And supplies energy produced from the turbine to the heat pump or the compressor.
The steam supply system according to claim 1, wherein the steam demand apparatus includes a first steam demand apparatus and a second steam demand apparatus,
The steam passing through the turbine and the pressure drop device flows into the steam supply device, which flows into the second steam demand device. The steam is supplied to the first steam demand device, the turbine and the pressure drop device, .
4. The system of claim 3, wherein the steam demanding device further comprises a third steam demanding device,
Wherein the steam distribution device further comprises a first steam distribution device and a second steam distribution device,
Wherein the pressure drop device further comprises a first pressure drop device and a second pressure drop device,
The first steam distribution device discharges the introduced steam to the first steam demand device, the turbine and the first pressure drop device, and the steam that has been depressurized through the turbine and the first pressure drop device flows into the second steam distribution device And the steam introduced into the second steam distribution device flows out to the second steam demand device and the second pressure drop device and the steam reduced in pressure through the second pressure drop device flows into the third steam demand device Steam supply system.
5. The steam supply and demand system according to claim 4, wherein the steam supply system further comprises a re-evaporator and a compressor, wherein the re-evaporator re-evaporates the condensed water flowing out from the first and second steam demand devices, And the condensed water flows into the heat pump to heat-exchange the refrigerant with the refrigerant of the heat pump, and the water introduced from the outside is heated by the heat pump to flow out to the second steam, and the second steam flowing out from the heat pump is discharged through the compressor And the steam is supplied to the steam distribution device.
The heat pump according to claim 5, wherein the heat pump includes a first heat exchanger, a compressor, a second heat exchanger, a third heat exchanger, and a pressure drop device, which are fluidly connected through a pipe through which refrigerant flows,
The refrigerant flowing into the first heat exchanger is heat-exchanged with the condensed water discharged from the re-evaporator, and the refrigerant flowing out of the first heat exchanger flows into the compressor after being introduced into the third heat exchanger, The refrigerant flowing into the second heat exchanger is heat-exchanged with the water flowing into the second heat exchanger, and the refrigerant flowing out of the second heat exchanger flows into the third heat exchanger, The refrigerant flowing out of the pressure reducing device flows into the first heat exchanger, and the refrigerant flowing out of the first heat exchanger and the refrigerant flowing out of the second heat exchanger flows through the third heat exchanger, system.
The apparatus of claim 6, wherein the temperature of the condensed water or other waste heat entering the first heat exchanger is between 50 ° C and 120 ° C.
7. The steam supply system according to claim 6, wherein water or condensed water heat-exchanged in the second heat exchanger flows out to the second steam.
The steam supply system according to claim 8, wherein the temperature of the second steam is 100 to 140 캜 and the pressure of the steam is 0 to 2.5 kgf / cm ² g.
10. The steam generator according to claim 9, wherein the steam supply system further comprises a compressor for compressing the second steam,
A second steam temperature is 140 ℃ to 170 ℃, pressure is 2.5kgf / cm ² g to 7 kgf / cm ² g of the steam supply system that exits from the compressor.
A method of supplying steam using the steam supply system of claim 1,
The first steam supplied from the first steam generator is separated and discharged from the steam distributor and the steam separated and discharged from the steam distributor flows into the at least one steam demanding device and the turbine,
The condensed water flowing out of the steam demanding apparatus is flowed into the heat pump, and the heat pump produces the second steam; And
And introducing said second steam into said steam distribution device.
The steam supply method according to claim 11, further comprising the step of pressurizing the second steam flowing out of the heat pump in the compressor and flowing the steam into the steam distributing device.
13. The method of claim 12, further comprising supplying energy produced by the turbine to the heat pump or compressor.
The steam supply method according to claim 11, wherein the temperature of the condensed water flowing into the heat pump is 50 to 120 ° C.
The steam supply method according to claim 11, wherein the temperature of the second steam flowing out of the heat pump is 100 to 140 캜 and the pressure is 0 to 2.5 kgf / cm ² g.
The steam supply method according to claim 12, wherein the temperature of the second steam flowing out of the compressor is 140 to 170 캜 and the pressure is 2.5 to 7 kgf / cm ² g.

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