CN108980616B - Long-distance industrial steam supply system for intermittent steam use users - Google Patents
Long-distance industrial steam supply system for intermittent steam use users Download PDFInfo
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- CN108980616B CN108980616B CN201810774918.XA CN201810774918A CN108980616B CN 108980616 B CN108980616 B CN 108980616B CN 201810774918 A CN201810774918 A CN 201810774918A CN 108980616 B CN108980616 B CN 108980616B
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- 239000002918 waste heat Substances 0.000 claims abstract description 62
- 238000010248 power generation Methods 0.000 claims abstract description 61
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005338 heat storage Methods 0.000 claims description 26
- 238000004146 energy storage Methods 0.000 claims description 14
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 description 14
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009191 jumping Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- MSSNHSVIGIHOJA-UHFFFAOYSA-N pentafluoropropane Chemical compound FC(F)CC(F)(F)F MSSNHSVIGIHOJA-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Abstract
The invention discloses a long-distance industrial steam supply system aiming at intermittent steam users, which solves the problem of how to select the organic working class and heat exchanger of a low-temperature power generation system according to the quality requirement of the long-distance industrial steam supply system. Including long distance steam delivery pipeline (1), intermittent type nature industry soda heat exchanger (2) and drain tank (12), be connected with waste heat power generation steam pipe (7) on long distance steam delivery pipeline (1) before industry steam supply pipeline (5), be connected with organic working medium steam pipe (14) on the hot water delivery outlet of waste heat power generation steam heat exchanger (10), the other end of organic working medium steam pipe (14) is in the same place with the expander entry intercommunication of low temperature turbo generator set (13), the expander export of low temperature turbo generator set (13) is through organic working medium exhaust steam pipe (15) and organic working medium condenser (16) intercommunication. The waste heat generating capacity is increased, and the comprehensive energy utilization rate of the system is improved.
Description
Technical Field
The invention relates to an industrial steam supply system for long-distance heat transmission, in particular to an industrial steam supply system for long-distance heat transmission of heat steam for intermittently using industrial users of heat steam.
Background
With the continuous promotion of town, the industrial park is continuously built, the industrial steam scale is expanding year by year, and the radiation range of the heat and steam supply system is also getting far and far. The steam consumption is not constant, the jumping is larger, and specific users such as intermittent steam consumption and the like are gradually added with a long-distance industrial heat and steam transmission system. For a long-distance heat transmission steam supply system, when the load changes, the steam supply system has the characteristic of large following adjustment hysteresis, and the longer the steam supply distance is, the more remarkable the hysteresis is; for example, when the users of the steam industry are brewing enterprises, the requirements of the brewing production process for steam have intermittence and jumping property of the steam consumption, if the conventional method of meeting the requirements of users by adjusting the steam supply system is adopted to perform steam supply operation, the long-distance heating system needs to be frequently adjusted, and the conventional adjusting control method has poor adjusting effect and is easy to cause the steam hammer accident of the heating pipe network, and the steam hammer accident is directly caused to cause excessive drainage of the pipe network, so that waste of water resources and heat energy is caused to the pipe network, and even the service life of the whole heating pipe network is reduced. The low-temperature power generation system is a system for generating power by utilizing an organic Rankine cycle (Organic Rankine Cycle), wherein an organic working medium is used as a circulating medium, and the organic working medium absorbs low-temperature heat to generate power; the organic working medium adopts freon and alkane medium, the medium has the capacity of realizing Rankine cycle in a low temperature range, the medium absorbs heat and becomes superheated steam, the superheated steam pushes expansion components such as a steam turbine, a screw machine, a vortex machine and the like to do work, thereby realizing power generation, and exhaust steam which completes work in a low-temperature power generation system is returned to an organic working medium heater through a cooler and a pressurizing pump to be reheated, becomes superheated steam again after heating, pushes the expansion machine to do work, and the cycle is realized, thereby realizing continuous power generation. How to organically combine a long-distance industrial steam supply system with intermittent steam supply requirements and a low-temperature power generation system, so that the steam supply of the long-distance industrial steam supply system is stable, and the excessive steam supply except the intermittent jump steam supply is fully utilized, has become a main subject of research by those skilled in the art, in the subject, how to select the type of organic working medium and a heat exchanger of the low-temperature power generation system according to the quality of the long-distance industrial steam supply system, keep the low-temperature power generation system in a continuous running state all the time, and also consider the excessive heat energy of the long-distance heat supply system to be effectively utilized, so that the problem to be solved on site is urgent.
Disclosure of Invention
The invention provides a long-distance industrial steam supply system aiming at intermittent steam use users, which solves the technical problem of how to stabilize the steam supply of the long-distance industrial steam supply system and fully utilize the redundant steam supply except the intermittent jump steam use amount.
The invention solves the technical problems by the following technical proposal:
the long-distance industrial steam supply system for intermittent steam users comprises a long-distance steam conveying pipeline, an intermittent industrial steam-water heat exchanger and a hydrophobic tank, wherein the intermittent industrial steam-water heat exchanger and the hydrophobic tank are connected with intermittent steam-water demand users, the long-distance steam conveying pipeline is communicated with the intermittent industrial steam-water heat exchanger through the industrial steam-supply pipeline, the intermittent industrial steam-water heat exchanger is communicated with the hydrophobic tank through a steam hydrophobic pipeline, an organic waste heat power generation steam pipeline is connected to the long-distance steam conveying pipeline in front of the industrial steam-supply pipeline, the other end of the waste heat power generation steam pipeline is communicated with a steam input port of the waste heat power generation steam heat exchanger, a steam hydrophobic port of the waste heat power generation steam heat exchanger is communicated with the hydrophobic tank through the waste heat steam hydrophobic pipeline, an organic working medium steam pipeline is connected to an organic working medium output port of the waste heat power generation steam heat exchanger, the other end of the organic working medium steam pipeline is communicated with an expander inlet of a low-temperature steam turbine generator set through the organic working medium steam pipeline, an output port of the organic working medium condenser is communicated with an organic working medium input port of the waste heat generator, and the organic working medium condenser is connected to the organic medium condenser through the organic medium condenser; the inlet of the expansion machine of the low-temperature steam turbine generator unit is also connected with a solar energy storage heat exchanger output pipeline, and the other end of the solar energy storage heat exchanger output pipeline is connected with a solar energy heat storage heat exchanger.
A heat conducting oil input pipe is connected to a heat conducting oil input port of the solar heat storage heat exchanger, the other end of the heat conducting oil input pipe is communicated with the solar heat collector, a heat conducting oil return pipe is connected to a heat conducting oil output port of the solar heat storage heat exchanger, and a solar side heat conducting oil pump is arranged on the heat conducting oil return pipe; the steam conveyed in the long-distance steam conveying pipeline is the steam with the temperature of 200 ℃ or lower at the industrial user side.
The long-distance industrial steam supply system for intermittent steam use comprises a long-distance steam conveying pipeline, an intermittent industrial steam-water heat exchanger and a hydrophobic tank, wherein the intermittent industrial steam-water heat exchanger and the hydrophobic tank are connected with intermittent steam-water demand users, the long-distance steam conveying pipeline is communicated with the intermittent industrial steam-water heat exchanger through the industrial steam-water supply pipeline, the intermittent industrial steam-water heat exchanger is communicated with the hydrophobic tank through a steam hydrophobic pipeline, a waste heat power generation steam pipeline is connected to the long-distance steam conveying pipeline in front of the industrial steam-water supply pipeline, the other end of the waste heat power generation steam pipeline is communicated with a steam input port of the waste heat power generation steam heat exchanger, a steam hydrophobic port of the waste heat power generation steam heat exchanger is communicated with the hydrophobic tank through the waste heat steam hydrophobic pipeline, a heat oil pipe of the heat conduction oil heat exchanger is connected to a heat conduction oil output port of the waste heat power generation steam heat exchanger, the heat conducting oil outlet of the heat conducting oil heat exchanger is connected with a heat conducting oil heat exchanger cold oil pipe, the heat conducting oil heat exchanger cold oil pipe is provided with a heat conducting oil pump, the other end of the heat conducting oil heat exchanger cold oil pipe is communicated with a heat conducting oil return port of the waste heat power generation steam heat exchanger, the organic working medium outlet of the heat conducting oil heat exchanger is connected with an organic working medium steam pipeline, the other end of the organic working medium steam pipeline is communicated with an expander inlet of a low-temperature steam turbine generator unit, an expander outlet of the low-temperature steam turbine generator unit is communicated with an organic working medium condenser through the organic working medium exhaust steam pipeline, an outlet of the organic working medium condenser is communicated with an organic working medium input port of the waste heat power generation steam heat exchanger through the organic working medium condenser pipe, an organic working medium circulating pump is arranged on the organic working medium condensation condenser pipe, an organic working medium condensation pipe of the solar heat storage heat exchanger is also connected between the organic working medium condensation pipe and the solar heat storage heat exchanger; the inlet of the expansion machine of the low-temperature steam turbine generator unit is also connected with a solar energy storage heat exchanger output pipeline, and the other end of the solar energy storage heat exchanger output pipeline is connected with a solar energy heat storage heat exchanger.
A heat conducting oil input pipe is connected to a heat conducting oil input port of the solar heat storage heat exchanger, the other end of the heat conducting oil input pipe is communicated with the solar heat collector, a heat conducting oil return pipe is connected to a heat conducting oil output port of the solar heat storage heat exchanger, and a solar side heat conducting oil pump is arranged on the heat conducting oil return pipe; the steam conveyed in the long-distance steam conveying pipeline is the steam with the temperature of more than 200 ℃ of industrial user side steam.
The invention has the beneficial effects that the intermittent industrial steam supply system is effectively coupled with the low-temperature power generation system, and the technical problems that the steam hammer accident is easy to be caused when the steam load is frequently regulated in a follow-up way when the long-distance intermittent industrial steam supply is required, the water drainage of the pipe network is excessive, the waste of water resources and heat energy is caused, and the service life of the pipe network is even influenced are solved. The safety and stability of the long-distance intermittent industrial steam supply system are improved, and the intermittent redundant industrial steam is generated through the low-temperature power generation system, so that the steam supply system is in a basically constant steam supply state, and the damage to the steam supply system caused by frequent adjustment is avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention when the industrial user side steam temperature transported in the long-distance steam transporting pipe 1 is 200 ℃ or less;
fig. 2 is a schematic structural view of the present invention when the industrial user side steam temperature transported in the long-distance steam transporting pipe 1 is 200 c or higher.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
the long-distance industrial steam supply system for intermittent steam users comprises a long-distance steam conveying pipeline 1, an intermittent industrial steam-water heat exchanger 2 and a drain tank 12, wherein the intermittent industrial steam-water heat exchanger 2 is connected with intermittent steam-supply demand users, the long-distance steam conveying pipeline 1 is communicated with the intermittent industrial steam-water heat exchanger 2 through an industrial steam supply pipeline 5, an industrial steam shut-off valve 3 and an industrial steam regulating valve 4 are respectively arranged on the industrial steam supply pipeline 5, the intermittent industrial steam-water heat exchanger 2 is communicated with the drain tank 12 through a steam drain pipeline 6, a waste heat power generation steam pipeline 7 is connected to the long-distance steam conveying pipeline 1 in front of the industrial steam supply pipeline 5, the other end of the waste heat power generation steam pipeline 7 is communicated with a steam input port of the waste heat power generation steam heat exchanger 10, the waste heat power generation steam pipeline 7 is respectively provided with a waste heat power generation steam shutoff valve 8 and a waste heat power generation steam regulating valve 9, a steam drain port of the waste heat power generation steam heat exchanger 10 is communicated with a drain tank 12 through a waste heat steam drain pipeline 11, an organic working medium steam pipeline 14 is connected to an organic working medium output port of the waste heat power generation steam heat exchanger 10, the other end of the organic working medium steam pipeline 14 is communicated with an expander inlet of a low-temperature steam turbine generator unit 13, an expander outlet of the low-temperature steam turbine generator unit 13 is communicated with an organic working medium condenser 16 through an organic working medium exhaust steam pipeline 15, an output port of the organic working medium condenser 16 is communicated with an organic working medium input port of the waste heat power generation steam heat exchanger 10 through an organic working medium condenser pipe 18, an organic working medium circulating pump 17 is arranged on the organic working medium condenser pipe 18, an organic working medium condensation pipe 19 of the solar heat storage heat exchanger is also connected between the organic working medium condensation pipe 18 and the solar heat storage heat exchanger 20; the inlet of the expansion machine of the low-temperature steam turbine generator unit 13 is also connected with a solar energy storage heat exchanger output pipeline 21, and the other end of the solar energy storage heat exchanger output pipeline 21 is connected with a solar energy heat storage heat exchanger 20; the heating system where the long-distance steam conveying pipeline 1 is positioned is designed according to the steam consumption of an intermittent steam user when the steam is required to be supplied, the steam is stably supplied when the intermittent steam user uses the steam, and in the period, the expander inlet of the low-temperature steam turbine generator unit 13 is communicated with the solar heat storage heat exchanger 20, and the low-temperature steam turbine generator unit 13 generates power by providing heat by the solar heat storage heat exchanger 20; when the intermittent steam use user does not use steam, the industrial steam shut-off valve 3 is turned off, the regulating valve on the output pipeline 21 of the solar energy storage heat exchanger is regulated, the waste heat power generation steam shut-off valve 8 is turned on, steam in the long-distance steam conveying pipeline 1 enters the waste heat power generation steam heat exchanger 10, heated organic working medium enters the low-temperature steam turbine generator unit 13 through the organic working medium steam pipeline 14 after heat exchange, and the organic working medium in the low-temperature steam turbine generator unit 13 drives the steam turbine generator unit to generate power, so that the effective utilization of intermittent waste heat is realized; when the intermittent steam use user uses the steam again, the waste heat power generation steam shut-off valve 8 is turned off, the industrial steam shut-off valve 3 is turned on, and meanwhile, the regulating valve on the output pipeline 21 of the solar energy storage heat exchanger is regulated, so that the switching between the waste heat power generation of the low-temperature steam turbine generator unit 13 and the steam user in the long-distance steam conveying pipeline 1 is realized; the steam supply structure realizes that the long-distance steam conveying system is always in a relatively stable steam supply state, and the low-temperature steam turbine generator unit 13 always generates power stably.
A heat conducting oil input pipe 23 is connected to a heat conducting oil input port of the solar heat storage heat exchanger 20, the other end of the heat conducting oil input pipe 23 is communicated with the solar heat collector 22, a heat conducting oil return pipe 24 is connected to a heat conducting oil output port of the solar heat storage heat exchanger 20, and a solar side heat conducting oil pump 25 is arranged on the heat conducting oil return pipe 24; the steam conveyed in the long-distance steam conveying pipeline 1 is the steam with the temperature of the industrial user side steam being below 200 ℃, and after the steam with the temperature is subjected to heat exchange by the waste heat power generation steam heat exchanger 10, the steam is relatively suitable for the heated vaporization of an organic medium in the low-temperature steam turbine generator unit 13, and the organic medium can be R245fa, R123 or R141b.
A long-distance industrial steam supply system for intermittent steam users comprises a long-distance steam conveying pipeline 1, an intermittent industrial steam-water heat exchanger 2 and a drain tank 12, wherein the intermittent industrial steam-water heat exchanger 2 is connected with intermittent steam-water heat exchanger 2 through an industrial steam supply pipeline 5, the intermittent industrial steam-water heat exchanger 2 is connected with the drain tank 12 through a steam drain pipeline 6, a waste heat power generation steam pipeline 7 is connected to the long-distance steam conveying pipeline 1 in front of the industrial steam supply pipeline 5, the other end of the waste heat power generation steam pipeline 7 is connected with a steam input port of a waste heat power generation steam heat exchanger 10, a steam drain port of the waste heat power generation steam heat exchanger 10 is connected with the drain tank 12 through a waste heat steam drain pipeline 11, a heat conducting oil heat exchanger heat oil pipe 29 of a heat conducting oil heat exchanger 26 is connected to a heat conducting oil output port of the waste heat power generation steam heat exchanger 10, a conduction oil heat exchanger cold oil pipe 27 is connected to a conduction oil outlet of the conduction oil heat exchanger 26, a conduction oil pump 28 is arranged on the conduction oil heat exchanger cold oil pipe 27, the other end of the conduction oil heat exchanger cold oil pipe 27 is communicated with a conduction oil return port of the waste heat power generation steam heat exchanger 10, an organic working medium steam pipeline 14 is connected to an organic working medium outlet of the conduction oil heat exchanger 26, the other end of the organic working medium steam pipeline 14 is communicated with an expander inlet of the low-temperature steam turbine generator unit 13, an expander outlet of the low-temperature steam turbine generator unit 13 is communicated with the organic working medium condenser 16 through the organic working medium dead steam pipeline 15, an outlet of the organic working medium condenser 16 is communicated with an organic working medium inlet of the waste heat power generation steam heat exchanger 10 through the organic working medium condenser pipe 18, an organic working medium circulating pump 17 is arranged on the organic working medium condensing pipe 18, and another path of organic working medium condensing pipe 19 is arranged between the organic working medium condensing return pipe 18 and the solar heat storage heat exchanger 20; the steam conveyed in the long-distance steam conveying pipeline 1 is the steam with the temperature of more than 200 ℃ of industrial user side steam, the high-temperature medium needs to exchange heat for the second time through the heat conduction oil heat exchanger 26, the requirement of stable physical property of the organic medium in the low-temperature steam turbine generator unit 13 can be met after heat exchange, and the organic medium can be Acetone, heptane, octane or tolene; the inlet of the expansion machine of the low-temperature steam turbine generator unit 13 is also connected with a solar energy storage heat exchanger output pipeline 21, and the other end of the solar energy storage heat exchanger output pipeline 21 is connected with a solar energy heat storage heat exchanger 20.
A heat transfer oil input pipe 23 is connected to a heat transfer oil input port of the solar heat storage heat exchanger 20, the other end of the heat transfer oil input pipe 23 is communicated with the solar heat collector 22, a heat transfer oil return pipe 24 is connected to a heat transfer oil output port of the solar heat storage heat exchanger 20, and a solar side heat transfer oil pump 25 is arranged on the heat transfer oil return pipe 24.
The two technical schemes of the invention can determine the corresponding parameters of the system according to the parameters of the industrial steam: assuming that the total heat quantity conveyed by the industrial steam pipeline isQThe heat for industrial users isQ 1 The heat for waste heat power generation isQ 2 The heat absorbed by the solar heat collector isQ 3 Then there is，Q 1 With the fluctuation of industrial load, further causeQ 2 Is a load variation of (a). When (when)Q 1 When the value of the sum is =0,Q=Q 2 that is, when the industrial steam consumption is zero, all the long-distance transported steam is used for waste heat power generation, and the steam load corresponds to the maximum operation load of the waste heat generator set. In order to ensure that the waste heat power generation system is in a continuous operation state, the heat of the solar heat collectorQ 3 The minimum operating load of the cogeneration system is provided, from which the parameters of the solar heat storage heat exchanger and the solar collector are determined. The first scheme is suitable for the range of low industrial steam temperature, and the second scheme is suitable for the condition of high industrial steam temperature. The first scheme may be selected when the industrial user side steam temperature is below 200 ℃, and the second scheme may be selected when the industrial user side steam temperature is above 200 ℃. The selection of the organic working medium is also determined by specific parameters such as industrial steam quantity, steam temperature and the like. For example, R245fa, R123 or R141b can be selected when the maximum temperature of the industrial user side steam is below 200 ℃, and Acetone, heptane, octane or tolene can be selected when the maximum temperature of the industrial user side steam is above 200 ℃. The highest steam temperature, the smallest heat exchange temperature difference and the working medium which can be achieved in the heat exchange process are comprehensively considered to be used as functional power when the working medium is selected, and the working medium meets the conditions and can be used as the circulating working medium of the system.
Claims (4)
1. The long-distance industrial steam supply system for intermittent steam users comprises a long-distance steam conveying pipeline (1), an intermittent industrial steam-water heat exchanger (2) and a drain tank (12), wherein the intermittent industrial steam-water heat exchanger (2) is connected with intermittent industrial steam-water heat exchanger (2) through an industrial steam supply pipeline (5), the intermittent industrial steam-water heat exchanger (2) is communicated with the drain tank (12) through a steam drain pipeline (6), the long-distance industrial steam supply system is characterized in that a waste heat power generation steam pipeline (7) is connected to the long-distance steam conveying pipeline (1) in front of the industrial steam supply pipeline (5), the other end of the waste heat power generation steam pipeline (7) is communicated with a steam input port of the waste heat power generation steam heat exchanger (10), a steam drain port of the waste heat power generation steam heat exchanger (10) is communicated with the drain tank (12) through a waste heat steam drain pipeline (11), the other end of the waste heat power generation steam heat exchanger (10) is communicated with an organic working medium steam pipeline (14) of a low-temperature generator set (13), the other end of the organic working medium steam pipeline (14) is communicated with an organic medium steam generator (13) of the low-temperature generator set (13) through a waste heat steam generator (15) and a waste heat generator (15) outlet, an output port of the organic working medium condenser (16) is communicated with an organic working medium input port of the waste heat power generation steam heat exchanger (10) through an organic working medium condensing pipe (18), and an organic working medium circulating pump (17) is arranged on the organic working medium condensing pipe (18); the inlet of the expansion machine of the low-temperature steam turbine generator unit (13) is also connected with a solar energy storage heat exchanger output pipeline (21), and the other end of the solar energy storage heat exchanger output pipeline (21) is connected with a solar heat storage heat exchanger (20).
2. The long-distance industrial steam supply system for intermittent steam users according to claim 1, wherein a heat conducting oil input pipe (23) is connected to a heat conducting oil input port of a solar heat storage heat exchanger (20), the other end of the heat conducting oil input pipe (23) is communicated with a solar heat collector (22), a heat conducting oil return pipe (24) is connected to a heat conducting oil output port of the solar heat storage heat exchanger (20), and a solar side heat conducting oil pump (25) is arranged on the heat conducting oil return pipe (24); the steam conveyed in the long-distance steam conveying pipeline (1) is the steam with the temperature of the industrial user side steam below 200 ℃.
3. The long-distance industrial steam supply system for intermittent steam use users comprises a long-distance steam conveying pipeline (1), an intermittent industrial steam-water heat exchanger (2) and a drain tank (12), wherein the intermittent industrial steam-water heat exchanger (2) is connected with intermittent industrial steam-water heat exchanger (2) through an industrial steam supply pipeline (5), the intermittent industrial steam-water heat exchanger (2) is communicated with the drain tank (12) through a steam drain pipeline (6), the long-distance industrial steam supply system is characterized in that a waste heat power generation steam pipeline (7) is connected to the long-distance steam conveying pipeline (1) in front of the industrial steam supply pipeline (5), the other end of the waste heat power generation steam pipeline (7) is communicated with a steam input port of the waste heat power generation steam heat exchanger (10), a first steam drain port of the waste heat power generation steam heat exchanger (10) is communicated with the drain tank (12) through a waste heat steam drain pipeline (11), an oil heat exchanger hot oil pipe (29) of a heat conducting oil heat exchanger (26) is connected to a heat conducting oil output port of the waste heat power generation steam heat exchanger (10), a heat conducting oil pump (27) is connected to a cold oil pipe (27) of the heat conducting oil pump (27), the other end of a cold oil pipe (27) of the heat conducting oil heat exchanger is communicated with a heat conducting oil return port of the waste heat power generation steam heat exchanger (10), an organic working medium steam pipeline (14) is connected to an organic working medium output port of the heat conducting oil heat exchanger (26), the other end of the organic working medium steam pipeline (14) is communicated with an expander inlet of a low-temperature steam turbine generator unit (13), an expander outlet of the low-temperature steam turbine generator unit (13) is communicated with an organic working medium condenser (16) through an organic working medium exhaust steam pipeline (15), an output port of the organic working medium condenser (16) is communicated with an organic working medium input port of the waste heat power generation steam heat exchanger (10) through an organic working medium condensing pipe (18), and an organic working medium circulating pump (17) is arranged on the organic working medium condensing pipe (18); the inlet of the expansion machine of the low-temperature steam turbine generator unit (13) is also connected with a solar energy storage heat exchanger output pipeline (21), and the other end of the solar energy storage heat exchanger output pipeline (21) is connected with a solar heat storage heat exchanger (20).
4. A long-distance industrial steam supply system for intermittent steam users according to claim 3, characterized in that a heat conduction oil input pipe (23) is connected to a heat conduction oil input port of a solar heat storage heat exchanger (20), the other end of the heat conduction oil input pipe (23) is communicated with a solar heat collector (22), a heat conduction oil return pipe (24) is connected to a heat conduction oil output port of the solar heat storage heat exchanger (20), and a solar side heat conduction oil pump (25) is arranged on the heat conduction oil return pipe (24); the steam conveyed in the long-distance steam conveying pipeline (1) is the steam with the temperature of the industrial user side steam being more than 200 ℃.
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| CN109990259A (en) * | 2019-04-09 | 2019-07-09 | 福州怡辉电力设备有限公司 | It is a kind of to fire the industrial steam-supplying system and adjusting method for mending temperature raising in user terminal natural gas |
| CN112554978B (en) * | 2020-11-16 | 2023-01-17 | 中国能源建设集团山西省电力勘测设计院有限公司 | Coupling complementary method for supercritical CO2 power generation and long-distance steam transmission |
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