CN106766362A - Coking system and its residual neat recovering system - Google Patents
Coking system and its residual neat recovering system Download PDFInfo
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- CN106766362A CN106766362A CN201710054844.8A CN201710054844A CN106766362A CN 106766362 A CN106766362 A CN 106766362A CN 201710054844 A CN201710054844 A CN 201710054844A CN 106766362 A CN106766362 A CN 106766362A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The present invention provides a kind of residual neat recovering system, including heat pump and the first TRT, the heat pump includes the first evaporator and the first condenser, first evaporator includes that cryogenic liquid inlet and high-temp liquid are exported, first condenser includes that high-temp liquid entrance and cryogenic liquid are exported, first TRT includes that thermal source inlet and low-temperature receiver are exported, the thermal source inlet and corresponding low-temperature receiver outlet, the high-temp liquid outlet of the thermal source inlet of first TRT and first evaporator, generated electricity with the heat using the liquid from high-temp liquid outlet outflow, and, the low-temperature receiver outlet is connected with the high-temp liquid entrance of the heat pump, can be exported from the low-temperature receiver after the thermal source inlet flows into the fluid temperature reduction of first TRT and flow into first condenser.The present invention also provides a kind of coking system.Coking system including the residual neat recovering system has relatively low energy consumption.
Description
Technical field
The present invention relates to coking production field, in particular it relates to the waste heat recovery of a kind of coking system and the coking system
System.
Background technology
At present, in domestic coking process flow, because the demand of coking furnace gas purification process to coal gas, it is necessary to carry out repeatedly
Heating, cooling, accordingly, it is desirable to provide for coal gas heat up thermal source and for coal gas cooling low-temperature receiver.Due to carrying respectively
Supplying heat source and low-temperature receiver, cause coking production technique to consume energy high, and the energy cannot be utilized effectively.
Therefore, coking process power consumption how is reduced as this area technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of residual neat recovering system for coking system and including the waste heat recovery system
The coking system of system, the residual neat recovering system can reclaim the waste heat in cooling water in coking process, and waste heat is carried out again
Utilize, such that it is able to reduce the energy consumption of coking process.
To achieve these goals, as one aspect of the present invention, there is provided a kind of residual neat recovering system, wherein, this is remaining
Heat recovery system includes heat pump and the first TRT, and the heat pump includes the first evaporator and the first condenser, described first
Evaporator includes that cryogenic liquid inlet and high-temp liquid are exported, and first condenser includes high-temp liquid entrance and cryogenic liquid
Outlet, first TRT includes thermal source inlet and low-temperature receiver outlet, the thermal source inlet and corresponding low-temperature receiver outlet,
The high-temp liquid outlet of the thermal source inlet of first TRT and first evaporator, with using from the high temperature
The heat of the liquid of liquid outlet outflow is generated electricity, also, low-temperature receiver outlet is connected with the high-temp liquid entrance of the heat pump, is led to
Can be exported described in inflow from the low-temperature receiver after the fluid temperature reduction for crossing the thermal source inlet inflow first TRT
First condenser.
Preferably, the heat pump includes heating steam inlet and condensation-water drain, and the heating steam inlet is cold with described
Solidifying water out connection, the heating steam inlet is used to being passed through the steam for heating, the steam condensation into after liquid from institute
State condensation-water drain outflow.
Preferably, the residual neat recovering system also includes condensate tank, and the condensate tank connects with the condensation-water drain
Lead to, and the condensate tank is connected with the cryogenic liquid inlet of the heat pump.
Preferably, the residual neat recovering system also includes condensed water small pump, the entrance of the condensed water small pump and institute
Condensate tank connection is stated, the outlet of the condensed water small pump is connected with the cryogenic liquid inlet of the heat pump.
Preferably, first TRT includes that the second evaporator, the second condenser, the first turbine and first generate electricity
Machine, the thermal source inlet includes the first thermal source inlet, and the low-temperature receiver outlet includes that the first low-temperature receiver is exported,
Second evaporator also includes the outlet of the first generating working medium and the first generating working medium entrance, second evaporator
For accommodating the generating working medium flowed into by the first generating working medium entrance in second evaporator, first thermal source enters
Mouth and first low-temperature receiver outlet are respectively formed on first evaporator, and first thermal source inlet is exported with first low-temperature receiver
Connection, is added with using the liquid by first thermal source inlet inflow second evaporator to the generating working medium
Heat, and stream can be exported by first low-temperature receiver by the liquid that first thermal source inlet flows into second evaporator
Go out, the first generating working medium outlet is connected with the air intake of first turbine；
First turbine is used to drive the electrical power generators；
Second condenser includes the second generating working medium entrance for interconnecting and the outlet of the second generating working medium, described the
Two generating working medium entrances are connected with the venthole of first turbine, with to the generating work flowed out from first turbine
Matter carries out cooling condensation, obtains the generating working medium of liquid, and the generating working medium of the liquid can be by second generating working medium
Outlet is flowed out second condenser and reaches the first generating working medium entrance of second evaporator.
Preferably, first TRT also includes preheater and working medium pump,
The preheater includes the 3rd generating working medium entrance for interconnecting and the outlet of the 3rd generating working medium, the 3rd hair
Electric working medium entrances and the second generating working medium outlet, the 3rd generating working medium outlet enter with first generating working medium
Mouth connection, the preheater is pre- for being carried out to the generating working medium for flowing into the preheater by the 3rd generating working medium entrance
Heat；
The entrance of the working medium pump and the second generating working medium outlet, the outlet of the working medium pump and the described 3rd
Generating working medium entrance is connected.
Preferably, the thermal source inlet includes Secondary Heat Source entrance, and the low-temperature receiver outlet includes that the second low-temperature receiver is exported, described
Secondary Heat Source entrance and second low-temperature receiver outlet are both formed on the preheater, and the Secondary Heat Source entrance and described the
Two low-temperature receiver outlets, the high-temp liquid outlet of the Secondary Heat Source entrance and first evaporator, described second is cold
Source outlet is connected with the high-temp liquid entrance of first evaporator, and the preheater is flowed into by the Secondary Heat Source entrance
Liquid can be exported by second low-temperature receiver and flowed out.
Preferably, the residual neat recovering system also includes system circulation pump, and the entrance of the system circulation pump is low with described
Geothermal liquid outlet.
Preferably, the residual neat recovering system also includes the second TRT, and second TRT includes the second whirlpool
Turbine, the second generator and the 3rd condenser, the 3rd condenser go out including steam inlet, coolant inlet and coolant
Mouthful, the steam inlet connects with the venthole of second turbine, the Low Temperature Liquid of the coolant inlet and the heat pump
Body outlet, the cooling liquid outlet is connected with the cryogenic liquid inlet of the heat pump.
As another aspect of the present invention, there is provided a kind of coking system, the coking system includes primary cooler, and its feature exists
In the coking system also includes residual neat recovering system, and the residual neat recovering system is returned for above-mentioned waste heat provided by the present invention
Receipts system, the cryogenic liquid inlet of the heat pump is connected with the liquid outlet of the primary cooler, the cryogenic liquid outlet of the heat pump
Liquid inlet with the primary cooler is connected.
Preferably, the coking system also includes refrigeration plant, the cryogenic liquid of the outlet of the refrigeration plant and the heat pump
Entrance is connected, the cryogenic liquid outlet of the entrance of the refrigeration plant and the heat pump.
Preferably, the coking system also includes final cooling tower, the Low Temperature Liquid of the liquid inlet of the final cooling tower and the heat pump
Body outlet, the liquid outlet of the final cooling tower is connected with the cryogenic liquid inlet of the heat pump.
Residual neat recovering system provided by the present invention can not only utilize the temperature flowed out from cooling device higher to follow
Heat in ring water is generated electricity, additionally it is possible to which the liquid of temperature reduction is re-used as cooling device as low-temperature receiver by the use of after generating electricity
Cooling medium.Technique electricity consumption is can serve as using the waste heat electricity of recirculated water, so as in a disguised form reduce the energy of whole technique
Consumption.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body implementation method is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of coking system provided by the present invention.
Description of reference numerals
100：Heat pump 200：First TRT
210：First turbine 220：Second evaporator
230：Second condenser 240：Preheater
250：First generator 260：Working medium pump
300：Primary cooler 400：Final cooling tower
500：Second TRT 510：Second turbine
520：3rd condenser 530：Second generator
600：Condensate tank 700：Condensed water small pump
800：System circulation pump 900：Vapour source
Specific embodiment
Specific embodiment of the invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
As one aspect of the present invention, there is provided a kind of residual neat recovering system, wherein, as shown in figure 1, the waste heat recovery system
System includes the TRT 200 of heat pump 100 and first.
Heat pump 100 includes the first evaporator and the first condenser, and first evaporator includes cryogenic liquid inlet and height
Geothermal liquid is exported, and first condenser includes that high-temp liquid entrance and cryogenic liquid are exported.
First TRT 200 includes thermal source inlet and low-temperature receiver outlet, thermal source inlet and corresponding low-temperature receiver outlet.Should
The high-temp liquid outlet of the thermal source inlet of the first TRT 200 and first evaporator, with using from the high temperature
The heat of the liquid of liquid outlet outflow is generated electricity, also, low-temperature receiver outlet is connected with the high-temp liquid entrance of the heat pump, is led to
Cross the thermal source inlet and flow into after the fluid temperature reduction of the first TRT 200 and can flow into described the from low-temperature receiver outlet
One condenser.
Residual neat recovering system provided by the present invention is mainly used in reclaiming the heat in recirculated water.Circulation fluid is from cooling device
After middle outflow, temperature is raised, therefore carries more heat.The recirculated water with higher heat passes through cryogenic liquid inlet
Into the first evaporator of heat pump 100.The liquid of 100 pairs of evaporators of entrance first of heat pump heats up, the liquid after intensification from
In the high-temp liquid output flow of the first evaporator to the first TRT 200, the first TRT 200 is using high-temp liquid
Heat is generated electricity.Temperature is reduced after heat in high-temp liquid is used to generate electricity, and becomes cryogenic liquid.The cryogenic liquid can be used
Make low-temperature receiver liquid.By low-temperature receiver liquid by the way that after the first condenser that low-temperature receiver entrance is passed through heat pump, the temperature of low-temperature receiver liquid is entered one
Step is reduced, and exports outflow from the cryogenic liquid of first condenser.
The low-temperature receiver outlet of the first condenser is connected with the liquid inlet of cooling device, using the cryogenic liquid from the first condenser
The cryogenic liquid of outflow is cooled down to the device for needing cooling.
It follows that residual neat recovering system provided by the present invention can not only utilize the temperature flowed out from cooling device
Heat in recirculated water higher is generated electricity, additionally it is possible to which the liquid of temperature reduction is re-used as low-temperature receiver by the use of after generating electricity
The cooling medium of cooling device.Technique electricity consumption is can serve as using the waste heat electricity of recirculated water, so as in a disguised form reduce whole
The energy consumption of technique.
It is readily seen, the residual neat recovering system belongs to a circulatory system for closing, in temperature liquid higher
Heat for generating cause its temperature reduction after, be still used as the cooling medium in cooling device, therefore, using the present invention
The residual neat recovering system for being provided can also reduce the waste of circulation fluid.
Residual neat recovering system provided by the present invention is preferred for coking field.Specifically, coking system includes primary cooler
300, the cryogenic liquid inlet of heat pump 100 and the outlet of primary cooler 300, the cryogenic liquid outlet of heat pump 100 and primary cooler
300 entrance connection.
Additionally, in coking field, the height of primary cooler 300 is about 30 meters, and heat pump is arranged on the bottom of primary cooler 300.
The liquid of the outlet outflow of primary cooler 300 flows to heat pump 100 from 30 meters of height, when liquid reaches the first cryogenic liquid inlet
When, kinetic energy higher is already had, such that it is able to be used as the partial power that liquid is circulated in whole residual neat recovering system, from
And the power in residual neat recovering system required for fluid circulation can be reduced, reduce further energy consumption.
The water flowed out from the primary cooler 300 of coking system still has temperature (about 43 DEG C) higher, also, just cold
The water flowed out in device 300 is also very big, and heat therein is considerable.Returned using residual neat recovering system provided by the present invention
After receiving wherein heat, the heat of the recovery can be used to generate electricity, and for plant area powers, such that it is able to largely reduce coking
The overall energy consumption of factory.
In the present invention, the concrete form to heat pump 100 does not do special restriction, for example, heat pump 100 can be compression
Formula heat pump, or absorption heat pump, can also be jet type heat pump.
In Fig. 1 in shown specific embodiment, heat pump 100 is absorption heat pump.The heat source of absorption heat pump
Can be cyclic ammonia water, steam or combustion gas.
As mentioned above it is possible, the residual neat recovering system is mainly used in coking system, and commonly used in coking process
0.4MPa to 0.6MPa, temperature are 150 DEG C of low-pressure saturated steam, therefore, for energy saving, heat pump 100 can be using steaming
Vapour is used as heat source.Correspondingly, heat pump 100 include heating steam inlet and condensation-water drain, the heating steam inlet with
The condensation-water drain connection.Heating steam inlet is connected with vapour source 900, for being passed through the steam as heat source.Steam
After vapour enters heat pump 100, heat is absorbed, temperature reduction, condenses into liquid, from condensation-water drain outflow.
Preferably, the residual neat recovering system also includes condensate tank 600, and the condensate tank 600 goes out with the condensed water
Mouth is connected, and condensate tank 600 is connected with the cryogenic liquid inlet of heat pump.The water of steam condensation can serve as waste heat recovery
The circulating cooling make-up water of system, further saves water source.
As mentioned above it is possible, in order to ensure the condensed water of heating vapour-condensing knot can successfully flow to heat pump 100
Cryogenic liquid inlet, it is preferable that the residual neat recovering system also include condensed water small pump 700, the condensed water small pump 700
Entrance connected with condensate tank 600, the outlet of condensed water small pump 700 is connected with the first high-temp liquid entrance of heat pump 100.
Condensed water small pump 700 can provide power for the liquid circulation between heat pump 100 and condensate tank 600.
In the present invention, the concrete structure to the first TRT 200 does not have special restriction, it is preferable that the first hair
Electric installation 200 includes the second evaporator 220, the second condenser 230, the first turbine 210 and the first generator 250.The heat
Source inlet includes the first thermal source inlet, and the low-temperature receiver outlet includes that the first low-temperature receiver is exported.
Second evaporator 220 includes the outlet of the first generating working medium and the first generating working medium entrance, and the second evaporator 220 is used for
Receiving flows into the generating working medium in second evaporator 220 by the first generating working medium entrance.First thermal source inlet
It is respectively formed on the second evaporator 220 with first low-temperature receiver outlet, and the first thermal source inlet and the first low-temperature receiver outlet, with profit
The generating working medium is heated with the liquid for flowing into by first thermal source inlet the second evaporator, and by described the
The liquid that one thermal source inlet flows into the second evaporator 220 can export outflow by first low-temperature receiver.The first generating work
Matter outlet is connected with the air intake of the first turbine 210, and first turbine 210 is used to drive the first generator 250 to generate electricity.
Specifically, the high-temp liquid for being flowed out from heat pump 100 is heated to the generating working medium in the second evaporator 220,
So that generating working medium is vaporized, and in the first turbine of inflow, promote the rotation of the first turbine.First turbine 210 drives first
Generator 250 rotates so that the first generator 250 can generate electricity.
In the present invention, the concrete structure to the first turbine 210 does not do particular determination, for example, the first turbine 210 can
Being any one in steam turbine, screw expansion agent and radial-inward turbine.
Second condenser 230 includes the second generating working medium entrance for interconnecting and the outlet of the second generating working medium, described the
Two generating working medium entrances are connected with the venthole of the first turbine 210, are entered with to the generating working medium flowed out from the first turbine
Row cooling is condensed, and obtains the generating working medium of liquid, and the generating working medium of the liquid can be exported by second generating working medium
Flow out second condenser and reach the first generating working medium entrance of the second evaporator 220.
The first TRT used in residual neat recovering system system shown in Fig. 1 is organic Rankine TRT
(ORC, Organic Rankine Cycle Power Generation).When high-temp liquid is flowed into the second evaporator 220,
Heat in high-temp liquid is absorbed by the generating working medium in the second evaporator 220 so that generating working medium is vaporized.Gaseous generating work
Matter enters the first turbine 210, promotes the first turbine 210 to rotate, and drives the first generator 250 to generate electricity.
In order to save generating working medium, it is preferable that generating working medium is could be arranged in the first TRT 200 described first
Closed cycle is carried out in TRT.That is, the generating working medium flowed out from the first turbine 210 can loop back the second evaporator
220。
Preferably, the first TRT 200 can also include preheater 240 and working medium pump 260.
Preheater 240 includes the 3rd generating working medium entrance for interconnecting and the outlet of the 3rd generating working medium, the 3rd hair
Electric working medium entrances and the second generating working medium outlet, the 3rd generating working medium outlet enter with first generating working medium
Mouth connection.Preheater 240 is pre- for being carried out to the generating working medium for flowing into the preheater 240 by the 3rd generating working medium entrance
Heat.The preheated device 240 of generating working medium flows into the second evaporator 220 after preheating, so that into the second evaporator 220
Generating working medium has had certain temperature, so can cause that generating working medium is vaporized more thoroughly, improve generating efficiency.
Second generating working medium outlet described in the entrance of working medium pump 260, the outlet of working medium pump 260 generates electricity with the described 3rd
Working medium entrances are connected.Working medium pump 260 is used to realize that the generating working medium is evaporated in the preheater 240, second of the first TRT
Circulated between device 220, the second condenser 230.
As mentioned above it is possible, preheater 240 is used to heat generating working medium.Therefore, in the present invention, to preheater
How 240 heat the generating working medium does not have special restriction.For example, the high-temp liquid that obtained in heat pump 100 can be drawn
Enter preheater 240, so as to be heated to the generating working medium.Specifically, the thermal source inlet includes Secondary Heat Source entrance institute
Stating low-temperature receiver outlet includes that the second low-temperature receiver is exported, and the Secondary Heat Source entrance and second low-temperature receiver outlet are both formed in preheater
On 240.The high-temp liquid outlet of the Secondary Heat Source entrance and first evaporator, the second low-temperature receiver outlet and institute
The high-temp liquid entrance connection of the first evaporator is stated, the liquid for flowing into preheater 240 by the Secondary Heat Source entrance can lead to
Cross the second low-temperature receiver outlet outflow.
The high-temp liquid obtained in heat pump 100 is incorporated into preheater 240 by Secondary Heat Source entrance, it should be pointed out that
It is that generating working medium does not mix mutually with the high-temp liquid being introduced into preheater 240.That is, Secondary Heat Source entrance and the 3rd hair
Do not connected mutually between electric working medium entrances.
After high-temp liquid flows through preheater 240, the generating working medium that heat is preheated in device absorbs, temperature reduction, from second
Low-temperature receiver outlet outflow, and heat pump 100 is flowed into by the first low-temperature receiver entrance, after lowering the temperature through the first condenser in heat pump 100, can be with
Used as the coolant of cooling-cycle device.
In order to ensure the fluid in residual neat recovering system provided by the present invention being capable of smooth circulation, it is preferable that described remaining
Heat recovery system also includes system circulation pump 800, the entrance of the system circulation pump 800 and the cryogenic liquid outlet.
As mentioned above it is possible, when the residual neat recovering system is used for coking system, cooling-cycle device is primary cooler
300, because the height of primary cooler 300 is 30m, therefore, system circulation pump 800 provides less power and can ensure that liquid described
It is circulated in residual neat recovering system.
In order to further reduce the energy consumption of coking system, the waste heat of coking system is recycled, it is preferable that the waste heat
Recovery system also includes the second TRT 500, and second TRT includes the second turbine 510, the and of the second generator 530
3rd condenser 520.3rd condenser 520 includes steam inlet, coolant inlet and cooling liquid outlet, the steam inlet with
The cryogenic liquid outlet of the venthole connection of the second turbine 510, the coolant inlet and heat pump 100, the cooling
Liquid outlet is connected with the cryogenic liquid inlet of heat pump 100.
In the present invention, the second TRT 500 is CDQ TRTs, for reclaiming the waste heat in dry quenching system.
In the present invention, the cryogenic liquid produced using heat pump 100 is cooled down to the 3rd condenser 520, can be by the 3rd condenser
The condensate obtained in 520 is added in primary cooler.Also, the elevated liquid of temperature after being cooled down to the 3rd condenser 520
Body can be flowed into heat pump 100, carry out cogeneration.
Similarly, in the present invention, the concrete structure to the second turbine 510 does not do special restriction yet, for example, second
Turbine 510 can be any one in steam turbine, screw expansion agent and radial-inward turbine.
As another aspect of the present invention, there is provided a kind of coking system, as shown in figure 1, the coking system is including just cold
Device 300, wherein, the coking system also includes residual neat recovering system, and the residual neat recovering system is on provided by the present invention
Residual neat recovering system is stated, the cryogenic liquid inlet of heat pump 100 is connected with the liquid outlet of primary cooler 300, the cryogenic liquid of heat pump 100
Outlet is connected with the liquid inlet of primary cooler 300.
As mentioned above it is possible, residual neat recovering system provided by the present invention can not only utilize what is flowed out from cooling device
Heat in temperature recirculated water higher is generated electricity, additionally it is possible to by the use of after generating electricity the liquid of temperature reduction as low-temperature receiver, again
Cooling medium as cooling device.Technique electricity consumption is can serve as using the waste heat electricity of recirculated water, so as in a disguised form reduce
The energy consumption of whole technique.
It is readily seen, the residual neat recovering system belongs to a circulatory system for closing, in temperature liquid higher
Heat for generating cause its temperature reduction after, be still used as the cooling medium in cooling device, therefore, using the present invention
The residual neat recovering system for being provided can also reduce the waste of circulation fluid.
As mentioned above it is possible, in order to promote the liquid circulation in coking system, it is preferable that the residual neat recovering system can be with
Including system circulation pump 800, in this embodiment, the cryogenic liquid outlet of heat pump 100 by system circulation pump 800 with it is first
The liquid inlet connection of cooler.Specifically, the cryogenic liquid outlet of heat pump 100 is connected with the entrance of system circulation pump 800, and system is followed
The outlet of ring pump 800 is connected with the liquid inlet of primary cooler.
Except primary cooler 300, coking system also includes other recirculated cooling water devices.
Preferably, the coking system also includes refrigeration plant 1000, the outlet of the refrigeration plant 1000 and the low temperature of heat pump 100
Liquid inlet connection, the entrance of refrigeration plant 100 and the cryogenic liquid outlet of heat pump 100.In coking system, refrigeration plant
1000 are cooled down for Hua Chan workshop sections.In the present invention, the cryogenic liquid for being produced using heat pump 100 can be entered to Hua Chan workshop sections
Row cooling, reduces the setting of cooling device, reduces cost.
Preferably, the coking system also includes final cooling tower 400, the liquid inlet of the final cooling tower 400 and the low temperature of heat pump 100
Liquid outlet is connected, and the liquid outlet of final cooling tower 400 is connected with the cryogenic liquid inlet of heat pump 100.Similarly, produced using heat pump
Cryogenic liquid be also used as the coolant of final cooling tower 400.
As a example by producing the coking system of dry complete 1,400,000 t/a of Jiao per year, primary cooler 300, final cooling tower 400, refrigeration plant 1000, with
And the 3rd condenser 520 be about 43 DEG C to the liquid that heat pump 100 is provided, therefore, using waste heat recovery system provided by the present invention
System can reclaim about 8300 × 104The heat of kcal/h is used for heat supply or generating.Meanwhile, the cryogenic liquid of heat pump 100 outlet stream
The cryogenic liquid temperature for going out is about 32 DEG C, can serve as primary cooler 300, final cooling tower 400, the condenser of refrigeration plant 1000 and the 3rd
520 cooling source.It follows that exhaust heat recovery power generation is carried out using above-mentioned residual neat recovering system provided by the present invention, not only
Existingization can be cancelled and produce recirculating cooling water system, kind of refrigeration cycle cooling water system, power generation cycle cooling water system, additionally it is possible to
Save about 240m3The supplement water of/h.For coking system, the energy saving of high degree reduces cost.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary implementation for using
Mode, but the invention is not limited in this.For those skilled in the art, essence of the invention is not being departed from
In the case of god and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as protection scope of the present invention.
Claims (12)
1. a kind of residual neat recovering system, it is characterised in that the residual neat recovering system includes heat pump and the first TRT, the heat
Pump includes the first evaporator and the first condenser, and first evaporator includes that cryogenic liquid inlet and high-temp liquid are exported, institute
State the first condenser to be exported including high-temp liquid entrance and cryogenic liquid, first TRT includes thermal source inlet and low-temperature receiver
Outlet, the thermal source inlet and corresponding low-temperature receiver outlet, the thermal source inlet of first TRT steam with described first
The high-temp liquid outlet of device is sent out, is generated electricity with the heat using the liquid from high-temp liquid outlet outflow, also, it is described
Low-temperature receiver outlet is connected with the high-temp liquid entrance of the heat pump, and the liquid of first TRT is flowed into by the thermal source inlet
First condenser can be flowed into after temperature reduction from low-temperature receiver outlet.
2. residual neat recovering system according to claim 1, it is characterised in that the heat pump includes heating steam inlet and cold
Solidifying water out, the heating steam inlet is connected with the condensation-water drain, and the heating steam inlet is used to be passed through for adding
The steam of heat, the steam condensation into after liquid from condensation-water drain outflow.
3. residual neat recovering system according to claim 2, it is characterised in that the residual neat recovering system also includes condensate
Case, the condensate tank is connected with the condensation-water drain, and the condensate tank connects with the cryogenic liquid inlet of the heat pump
It is logical.
4. residual neat recovering system according to claim 3, it is characterised in that the residual neat recovering system also includes condensed water
Small pump, the entrance of the condensed water small pump is connected with the condensate tank, the outlet of the condensed water small pump with it is described
The cryogenic liquid inlet connection of heat pump.
5. residual neat recovering system as claimed in any of claims 1 to 4, it is characterised in that described first generates electricity dress
Put including the second evaporator, the second condenser, the first turbine and the first generator, the thermal source inlet enters including the first thermal source
Mouthful, the low-temperature receiver outlet includes that the first low-temperature receiver is exported,
Second evaporator also includes the outlet of the first generating working medium and the first generating working medium entrance, and second evaporator is used for
Accommodate the generating working medium flowed into by the first generating working medium entrance in second evaporator, first thermal source inlet with
The first low-temperature receiver outlet is respectively formed on first evaporator, and first thermal source inlet is exported with first low-temperature receiver and connected
It is logical, the generating working medium is heated with using the liquid by first thermal source inlet inflow second evaporator,
And outflow, institute can be exported by first low-temperature receiver by the liquid that first thermal source inlet flows into second evaporator
The outlet of the first generating working medium is stated to be connected with the air intake of first turbine；
First turbine is used to drive the electrical power generators；
Second condenser includes the second generating working medium entrance for interconnecting and the outlet of the second generating working medium, second hair
Electric working medium entrances are connected with the venthole of first turbine, are entered with to the generating working medium flowed out from first turbine
Row cooling is condensed, and obtains the generating working medium of liquid, and the generating working medium of the liquid can be exported by second generating working medium
Flow out second condenser and reach the first generating working medium entrance of second evaporator.
6. residual neat recovering system according to claim 5, it is characterised in that first TRT also includes preheater
And working medium pump,
The preheater includes the 3rd generating working medium entrance for interconnecting and the outlet of the 3rd generating working medium, the 3rd generating work
Matter entrance and the second generating working medium outlet, the 3rd generating working medium outlet connect with the first generating working medium entrance
Logical, the preheater is used to preheat the generating working medium for flowing into the preheater by the 3rd generating working medium entrance；
The entrance of the working medium pump and the second generating working medium outlet, the outlet of the working medium pump generate electricity with the described 3rd
Working medium entrances are connected.
7. residual neat recovering system according to claim 6, it is characterised in that the thermal source inlet enters including Secondary Heat Source
Mouthful, the low-temperature receiver outlet includes that the second low-temperature receiver is exported, and the Secondary Heat Source entrance and second low-temperature receiver outlet are both formed in institute
State on preheater, and the Secondary Heat Source entrance and the second low-temperature receiver outlet, the Secondary Heat Source entrance and described
The high-temp liquid outlet of one evaporator, the second low-temperature receiver outlet connects with the high-temp liquid entrance of first evaporator
Logical, the liquid for flowing into the preheater by the Secondary Heat Source entrance can be exported by second low-temperature receiver and flowed out.
8. residual neat recovering system as claimed in any of claims 1 to 4, it is characterised in that the waste heat recovery system
System also includes system circulation pump, the entrance of the system circulation pump and the cryogenic liquid outlet.
9. residual neat recovering system as claimed in any of claims 1 to 4, it is characterised in that the waste heat recovery system
System also includes the second TRT, and second TRT includes the second turbine, the second generator and the 3rd condenser, institute
Stating the 3rd condenser includes steam inlet, coolant inlet and cooling liquid outlet, the steam inlet and second turbine
Venthole connection, the cryogenic liquid outlet of the coolant inlet and the heat pump, the cooling liquid outlet with it is described
The cryogenic liquid inlet connection of heat pump.
10. a kind of coking system, the coking system includes primary cooler, it is characterised in that the coking system also includes waste heat
Recovery system, residual neat recovering system of the residual neat recovering system described in any one in claim 1 to 9, the heat pump
Cryogenic liquid inlet connected with the liquid outlet of the primary cooler, the outlet of the cryogenic liquid of the heat pump and the primary cooler enter
Liquid mouthful connection.
11. coking systems according to claim 10, it is characterised in that the coking system also includes refrigeration plant, described
The outlet of refrigeration plant is connected with the cryogenic liquid inlet of the heat pump, the cryogenic liquid of the entrance of the refrigeration plant and the heat pump
Outlet.
12. coking system according to claim 10 or 11, it is characterised in that the coking system also includes final cooling tower,
The cryogenic liquid outlet of the liquid inlet of the final cooling tower and the heat pump, the liquid outlet of the final cooling tower and the heat pump
Cryogenic liquid inlet is connected.
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| CN201710054844.8A CN106766362B (en) | 2017-01-24 | 2017-01-24 | Coking system and waste heat recovery system thereof |
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| CN201710054844.8A CN106766362B (en) | 2017-01-24 | 2017-01-24 | Coking system and waste heat recovery system thereof |
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| CN117128636A (en) * | 2023-08-16 | 2023-11-28 | 江苏鼎视能源科技有限公司 | Heat energy recovery device of air conditioner water cooling unit capable of partially recovering heat |
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| CN106766362B (en) | 2022-10-14 |
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