CN106988813A - The system and method that a kind of utilization waste heat drives process equipment - Google Patents
The system and method that a kind of utilization waste heat drives process equipment Download PDFInfo
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- CN106988813A CN106988813A CN201710340584.0A CN201710340584A CN106988813A CN 106988813 A CN106988813 A CN 106988813A CN 201710340584 A CN201710340584 A CN 201710340584A CN 106988813 A CN106988813 A CN 106988813A
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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
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Abstract
The present invention relates to the system and method that a kind of utilization waste heat drives process equipment.A kind of reasonable in design is currently there are no, easy to use, the system that gas compressor and the recovery waste heat of boiler replenishing water pump operating can be effectively driven using urea technique waste heat.The system of the present invention includes technical cooling tower, is characterized in：Also include technical cooling water heat exchanger, two class heat pumps, steam stop, small turbine, interlocking stop valve and oxygen-eliminating device, the coolant outlet of technical cooling tower is connected by process cooling water discharge line with the high temperature side-entrance of technical cooling water heat exchanger, the high temperature side outlet of technical cooling water heat exchanger is connected by technical cooling water inflow pipe with the cooling water inlet of technical cooling tower, the condensator outlet of two class heat pumps is connected with heat pump cooling water discharge line, is connected on by heat pump cooling water discharge line in the import of water compensating valve.The present invention provides kinetic energy, the safe and reliable work of safeguards system, lifting system economic benefit using waste heat.
Description
Technical field
It is that one kind is capable of supply that the low product of utilization the present invention relates to the system and method that a kind of utilization waste heat drives process equipment
The system and method that position heat energy provides kinetic energy, belong to technical field of waste heat utilization.
Background technology
Second class absorption heat pump is otherwise known as warming heat pump, is that one kind can use middle temperature waste heat and low-temperature heat source to produce height
The absorption heat pump of quality heat, can lift the quality of waste heat.Unit is by the absorption exothermic process in absorber, in heating
Warm water, can be become 150 DEG C or so of high-temperature-hot-water or steam.
A large amount of 100 DEG C or so of interior circulation cooling water can be produced in urea production process, this part waste heat driven bromine is utilized
Change the technological means of lithium refrigeration machine production chilled water in part factory application, but utilize this partial heat to produce more Gao Pin
The method in mass-energy source yet there are no introduction.
Small turbine is also known as low-pressure turbine, is to use steam of the pressure less than 1.5MPa to be revolved as driven by energy blade
The machine turned.Just there is the application that feed pump is driven using small turbine in coal-burning power plant, Ye You producers are dedicated for heat supply network circulation
Water pump provides the small turbine of driving, and minimum steam inlet condition pressure can as little as 0.3MPa.Small steam turbine is simple in construction, operation
Reliably, it is a very beneficial utilization low-pressure steam to be converted into mechanical energy by small turbine.
Gas compressor is a kind of impulsion mechanical device that low-pressure fluid is promoted to high-pressure fluid, in the mistake of compressed gas
Can be motor driving or steam turbine driving, it is necessary to which outside provide power in journey.In some processes of production urea
Link to gas, it is necessary to be compressed operation.
Boiler replenishing water pump is the mechanism that condensate is conveyed in therrmodynamic system, and the prime mover connect can be electronic, also may be used
To be steam-operating, driving equipment can be selected according to on-site actual situations.
Boiler replenishing water processing now uses reverse-osmosis treated technology, in order to increase water rate, extension device service life,
It is generally necessary to by the control of moisturizing inlet temperature between 25-35 DEG C, the too low then water rate of temperature declines, the too high then easy damage of temperature
Bad reverse osmosis membrane, presently, there are the wasting phenomenon for using the high-quality energy to heat moisturizing.
Although also there is some waste heat comprehensive utilization systems now, such as publication date is 06 month 2013 12 days, Publication No.
In CN103148705A Chinese patent, a kind of disclosed afterheat integral utilization system for sulfuric；And for example publication date is
In on November 23rd, 2016, Publication No. CN106152094A Chinese patent, a kind of disclosed fatty acid production process waste heat
Recycling system, these systems are not suitable in urea technique.
A kind of reasonable in design is currently there are no, it is easy to use, effectively it can drive gas using urea technique waste heat
The system of compressor and the recovery waste heat of boiler replenishing water pump operating.
The content of the invention
It is an object of the invention to integrate prior art, kinetic energy is provided using waste heat, the safe and reliable work of safeguards system is carried
Rise the system and method that the utilization waste heat of systematic economy benefit drives process equipment.The present invention first is rationally produced using used heat and driven
The mechanical energy of skill of starting building equipment operation, reduces the thermal pollution to environment, improves the economic benefit of system；Second is equipped with benefit
Vapour system is filled, ensures that process equipment can be operated reliably；3rd utilizes waste heat moisturizing, improves equipment water rate,
Service life of equipment is extended, the low-grade exhaust heat being difficult by, further lifting system economic benefit has been reclaimed；4th system
Automaticity is high, can be operated according to actual conditions and distant place instruction.The efficiency of energy utilization of the present invention is high, economy effect
Benefit is good, and the production that used heat serves urea can be reclaimed well.
The present invention the used technical scheme that solves the above problems is：This drives the system of process equipment to include using waste heat
Technical cooling tower, its design feature is：Also include process cooling water discharge line, technical cooling water heat exchanger, technique cold
But water inflow pipe, middle lukewarm water pipeline, two class heat pumps, middle water outlet pipe road, steam stop, high-quality steam pipe
Road, small turbine, low-quality jet chimney, interlocking stop valve, compressor, compressor driving device, water pump transmission device, boiler
Small pump, oxygen-eliminating device, heat pump cooling water enter pipeline, heat pump cooling water discharge line, water compensating valve and treatment device for water, described
The high temperature side-entrance that the coolant outlet of technical cooling tower passes through process cooling water discharge line and technical cooling water heat exchanger
Connection, the high temperature side outlet of the technical cooling water heat exchanger is cold by technical cooling water inflow pipe and technical cooling tower
But water inlet is connected, and the low temperature side outlet of the technical cooling water heat exchanger passes through middle lukewarm water pipeline and two class heat pumps
Driving heat source entry port is connected, and the driving heat source discharge port of the two classes heat pump is cold by middle water outlet pipe road and technique
But the low temperature side-entrance connection of water heat exchanger, the absorber outlet of the two classes heat pump is connected with the import of steam stop,
The outlet of the steam stop is connected by the steam inlet of high-quality steam pipeline and small turbine, the small turbine
Import of the steam (vapor) outlet by low-quality jet chimney with interlocking stop valve is connected, outlet and the two classes heat of the interlocking stop valve
The absorber import connection of pump；The power outlet of the small turbine is connected by compressor driving device with compressor, described
The power outlet of small turbine is also connected by water pump transmission device with boiler replenishing water pump；The heat pump cooling water enter pipeline with
The condenser inlet connection of two class heat pumps, the condensator outlet of the two classes heat pump is connected with heat pump cooling water discharge line, institute
State and be connected on by heat pump cooling water discharge line in the import of water compensating valve, the outlet of the water compensating valve and the import for the treatment of device for water
Connection, the outlet of the treatment device for water and the moisturizing entrance of oxygen-eliminating device are connected.
Preferably, present invention additionally comprises condensate valve, reject steam pipeline, steam pressure regulation and valve group is blocked, the side
Road jet chimney and steam pressure regulation and block the import of valve group and be connected, the steam pressure regulation and block by the outlet of valve group and be connected on height
On quality steam pipeline, the import of condensate valve is connect by the low-quality jet chimney, the outlet of the condensate valve is connected to
On the solidifying water inlet of oxygen-eliminating device.
Preferably, present invention additionally comprises liquid level monitoring device, the liquid level monitoring device is arranged on oxygen-eliminating device.
Preferably, technical cooling water heat exchanger of the present invention is fluoroplastics heat exchanger.
Preferably, steam stop of the present invention, interlocking stop valve, steam pressure regulation and blocking valve group, condensate valve
It is electrical interlocking control valve, steam pressure regulation and when blocking valve group and being turned on and off, remaining valve can perform keying accordingly
Operation.
Preferably, water compensating valve of the present invention is by liquid level monitoring device control, can automatically it be opened according to deaerator level
Valve closing door, completes moisturizing operation.
Preferably, treatment device for water of the present invention is the treatment device for water using principle of reverse osmosis.
A kind of method that utilization waste heat drives process equipment, it is characterised in that：Use described system, the fortune of methods described
Row step is as follows：
（1）When technical cooling tower is started working, process cooling water flows into technical cooling water heat exchanger and cooled, and then returns
Return technical cooling tower and complete cooling circulation, while the middle warm water after being absorbed heat in technical cooling water heat exchanger drives two class heat pumps
Producing steam, the middle warm water after cooling, which flows into process cooling water heat exchanger, to be continued to absorb heat completion circulation, two class heat pump systems
The steam taken, which enters, returns to two class heat pumps continuation heat absorption completion steam working cycles after small turbine work, small turbine is by steam
Driving is driven to compressor and boiler replenishing water pump output mechanical energy, compressor and boiler replenishing water pump and starts running and serve
Urea production link, heat pump cooling water flows out again after flowing into two class heat pumps, completes the cooling to two class heat pumps, and now steam ends
Valve and interlocking stop valve are opened, and steam pressure regulation and are blocked valve group, condensate valve and water compensating valve and are closed；
（2）When breaking down when two class heat pumps, needing maintenance or not enough steam quality, steam pressure regulation and valve group opening is blocked, this
When condensate valve interlocking open, steam stop and interlocking stop valve interlocking close, pass-out steam enter small turbine work, guarantor
Card urea production link is not influenceed by afterheat utilizing system；Or by site operation personnel's steam off stop valve, then interlock
Stop valve interlocking close, steam pressure regulation and block valve group and condensate valve interlocking open；
（3）When oxygen-eliminating device needs moisturizing, water compensating valve can be opened manually, heat pump cooling water absorbs heat rear portion through two class heat pumps
Divide and enter treatment device for water progress water treatment, be re-fed into oxygen-eliminating device and complete moisturizing, water compensating valve is turned off after the completion of moisturizing；Or
Person is measured the liquid level in oxygen-eliminating device by liquid level monitoring device, when liquid level is less than lower limit set value, opens water compensating valve, when liquid level is high
When upper limit set value, water compensating valve is closed, the moisturizing work realization to oxygen-eliminating device is automatically controlled.
Preferably, present invention process cooling water from technical cooling tower discharge, into technical cooling water heat exchanger after return
Return technical cooling tower formation high-quality UTILIZATION OF VESIDUAL HEAT IN circulation canal；Middle warm water enters two classes heat after cooling water heat exchanger outflow
Pump, is then returned to cooling water heat exchanger formation heat pump driving heat source circulation canal；Steam flows out from two class heat pumps, into small vapour
Two class heat pumps formation steam circulation passage is returned after turbine；Kinetic energy is output to compressor from small turbine and boiler replenishing water pump is formed
Mechanical energy output channel；Pass-out steam is introduced into steam pressure regulation and blocks valve group, subsequently enters small turbine, then by condensate valve
Into oxygen-eliminating device formation pass-out steam passage；Heat pump cooling water enters outflow after two class heat pumps and forms heat pump cooling-water duct；Heat
Pump cooling water flowed out from two class heat pumps after by water compensating valve, into treatment device for water, enter back into oxygen-eliminating device formation moisturizing lead to
Road.
The present invention compared with prior art, with advantages below and effect：（1）Rationally set using used heat production driving technique
The mechanical energy that received shipment turns, reduces the thermal pollution to environment, improves the economic benefit of system；（2）It is equipped with supplement steam system
System, ensures that process equipment can be operated reliably；（3）Using waste heat moisturizing, the water rate of equipment is improved, extends and sets
Standby service life, has reclaimed the low-grade exhaust heat being difficult by, further lifting system economic benefit；（4）System automation journey
Degree is high, can be operated according to actual conditions and distant place instruction；（5）Reasonable in design, design is unique, operates steadily, can
It is good by property；（6）Efficiency of energy utilization is high, good in economic efficiency, and the production that used heat serves urea can be reclaimed well.
Brief description of the drawings
Fig. 1 is the structural representation for the system for driving process equipment in the embodiment of the present invention using waste heat.
In figure：1st, technical cooling tower；2nd, process cooling water discharge line；3rd, technical cooling water heat exchanger；4th, technique is cold
But water inflow pipe；5th, middle lukewarm water pipeline；6th, two class heat pump；7th, middle water outlet pipe road；8th, steam stop；9th, Gao Pin
Matter jet chimney；10th, small turbine；11st, low-quality jet chimney；12nd, stop valve is interlocked；13rd, compressor driving device；14、
Compressor；15th, water pump transmission device；16th, boiler replenishing water pump；17th, reject steam pipeline；18th, steam pressure regulation and valve group is blocked；
19th, condensate valve；20th, oxygen-eliminating device；21st, heat pump cooling water enters pipeline；22nd, heat pump cooling water discharge line；23rd, water compensating valve；
24th, treatment device for water；25th, liquid level monitoring device.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in further detail by embodiment, following examples are to this hair
Bright explanation and the invention is not limited in following examples.
Embodiment.
Referring to Fig. 1, the system for driving process equipment using waste heat in the present embodiment includes technical cooling tower 1, technical cooling
Water discharge pipe road 2, technical cooling water heat exchanger 3, technical cooling water inflow pipe 4, middle lukewarm water pipeline 5, two class heat pumps
6th, middle water outlet pipe road 7, steam stop 8, high-quality steam pipeline 9, small turbine 10, low-quality jet chimney 11, connection
Lock stop valve 12, compressor driving device 13, compressor 14, water pump transmission device 15, boiler replenishing water pump 16, reject steam pipeline
17th, steam pressure regulation and valve group 18, condensate valve 19, oxygen-eliminating device 20, heat pump cooling water are blocked into pipeline 21, heat pump cooling water drainage
Go out pipeline 22, water compensating valve 23, treatment device for water 24 and liquid level monitoring device 25.Wherein, technical cooling water heat exchanger 3 can be with
For fluoroplastics heat exchanger, steam stop 8, interlocking stop valve 12, steam pressure regulation and block valve group 18, condensate valve 19 and mend
Water valve 23 can be electrical interlocking control valve, and treatment device for water 24 can be to be filled using the water treatment of principle of reverse osmosis
Put.
The coolant outlet of technical cooling tower 1 passes through process cooling water discharge line 2 and process cooling water in the present embodiment
The high temperature side-entrance connection of heat exchanger 3, the high temperature side outlet of technical cooling water heat exchanger 3 is flowed into by process cooling water manages
Road 4 is connected with the cooling water inlet of technical cooling tower 1, and the low temperature side outlet of technical cooling water heat exchanger 3 is entered by middle warm water
Waterpipe 5 is connected with the driving heat source entry port of two class heat pumps 6, and the driving heat source discharge port of two class heat pumps 6 passes through middle temperature
Water outlet conduit 7 is connected with the low temperature side-entrance of technical cooling water heat exchanger 3, the absorber outlet of two class heat pumps 6 and steam
The import connection of stop valve 8, the outlet of steam stop 8 passes through the steam inlet of high-quality steam pipeline 9 and small turbine 10
Connection, the steam (vapor) outlet of small turbine 10 is connected by low-quality jet chimney 11 with the import of interlocking stop valve 12, and interlocking is cut
Only the outlet of valve 12 is connected with the absorber import of two class heat pumps 6.
The power outlet of small turbine 10 is connected by compressor driving device 13 with compressor 14 in the present embodiment, small vapour
The power outlet of turbine 10 is also connected by water pump transmission device 15 with boiler replenishing water pump 16.
Reject steam pipeline 17 and steam pressure regulation and block the import of valve group 18 in the present embodiment and be connected, steam pressure regulation and cut
It is connected on by the outlet of disconnected valve group 28 on high-quality steam pipeline 9, the import of condensate valve 19 is connect by low-quality jet chimney 11, is coagulated
The outlet for bearing water valve 19 is connected on the solidifying water inlet of oxygen-eliminating device 20.
Heat pump cooling water is connected into pipeline 21 with the condenser inlet of two class heat pumps 6 in the present embodiment, two class heat pumps 6
Condensator outlet is connected with heat pump cooling water discharge line 22, and the import of water compensating valve 23 is connected on by heat pump cooling water discharge line 22
On, the outlet of water compensating valve 23 is connected with the import for the treatment of device for water 24, outlet and the oxygen-eliminating device 20 for the treatment of device for water 24
Moisturizing entrance is connected, and liquid level monitoring device 25 is arranged on oxygen-eliminating device 20.
The system of utilization waste heat driving process equipment in the present embodiment is included with lower channel：Process cooling water is cold from technique
But tower 1 is discharged, into technical cooling water heat exchanger 3 after return to technical cooling tower 1 and form high-quality UTILIZATION OF VESIDUAL HEAT IN circulation canal；
Middle warm water enters two class heat pumps 6 after the outflow of cooling water heat exchanger 3, is then returned to the formation heat pump of cooling water heat exchanger 3 and drives
Dynamic heat-source Cycles passage；Steam flows out from two class heat pumps 6, into small turbine 10 after return two class heat pumps 6 formation steam circulation
Passage；Kinetic energy is output to compressor 14 and the formation mechanical energy output channel of boiler replenishing water pump 16 from small turbine 10；Pass-out steam
It is introduced into steam pressure regulation and blocks valve group 18, subsequently enters small turbine 10, then formed into oxygen-eliminating device 20 by condensate valve 19
Pass-out steam passage；Heat pump cooling water enters outflow after two class heat pumps 6 and forms heat pump cooling-water duct；Heat pump cooling water is from two classes
By water compensating valve 23 after being flowed out in heat pump 6, into treatment device for water 24, the formation moisturizing passage of oxygen-eliminating device 20 is entered back into.
Drive the operating procedure of the system of process equipment as follows in the present embodiment using waste heat.
（1）When technical cooling tower 1 is started working, process cooling water flows into technical cooling water heat exchanger 3 and cooled,
It is then returned to technical cooling tower 1 and completes cooling circulation, while the middle warm water driving after being absorbed heat in technical cooling water heat exchanger 3
The producing steam of two class heat pump 6, the middle warm water after cooling, which flows into process cooling water heat exchanger 3, to be continued to absorb heat completion circulation,
The steam that two class heat pumps 6 are produced, which enters, returns to two class heat pumps 6 continuation heat absorption completion steam working cycles after small turbine 10 works,
Small turbine 10 by steam drive to compressor 14 and the output mechanical energy of boiler replenishing water pump 16, compressor 14 and boiler replenishing water pump 16
It is driven and starts running and serve urea production link, heat pump cooling water flows out again after flowing into two class heat pumps 6, completes to two
The cooling of class heat pump 6, now steam stop 8 and interlocking stop valve 12 open, steam pressure regulation and block valve group 18, condensate valve
19 and water compensating valve 23 be closed.
（2）When breaking down when two class heat pumps 6, needing maintenance or not enough steam quality, steam pressure regulation and valve group 18 is blocked
Open, the now interlocking of condensate valve 19 is opened, steam stop 8 and the interlocking interlocking close of stop valve 12, pass-out steam enters small
Steam turbine 10 is worked, it is ensured that urea production link is not influenceed by afterheat utilizing system；It can also be closed by site operation personnel
Steam stop 8, then interlock the interlocking close of stop valve 12, steam pressure regulation and block valve group 18 and condensate valve 19 interlocking open.
（3）When oxygen-eliminating device 20 needs moisturizing, water compensating valve 23 can be opened manually, heat pump cooling water absorbs through two class heat pumps
Partly enter treatment device for water 24 after heat and carry out water treatment, be re-fed into oxygen-eliminating device 20 and complete moisturizing, after the completion of moisturizing again
Close water compensating valve 23；The liquid level in oxygen-eliminating device 20 can also be measured by liquid level monitoring device 25, when liquid level is less than lower limit set value
When, water compensating valve 23 is opened, when liquid level is higher than upper limit set value, water compensating valve 23 is closed, the moisturizing work to oxygen-eliminating device 20 is realized
Automatically control.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be different, and the above content described in this specification is only to structure example explanation of the present invention.It is all according to
The equivalence changes or simple change done according to the construction described in inventional idea of the present invention, feature and principle, are included in this hair
In the protection domain of bright patent.Those skilled in the art can do various to described specific embodiment
The modification of various kinds or supplement or using similar mode substitute, without departing from the present invention structure or surmount present claims
Scope defined in book, all should belong to protection scope of the present invention.
Claims (7)
1. the system that a kind of utilization waste heat drives process equipment, including technical cooling tower, it is characterised in that：Also include technical cooling
Water discharge pipe road, technical cooling water heat exchanger, technical cooling water inflow pipe, middle lukewarm water pipeline, two class heat pumps, middle temperature
Water outlet conduit, steam stop, high-quality steam pipeline, small turbine, low-quality jet chimney, interlocking stop valve, compression
Machine, compressor driving device, water pump transmission device, boiler replenishing water pump, oxygen-eliminating device, heat pump cooling water enter pipeline, heat pump and cooled down
Water discharge pipe road, water compensating valve and treatment device for water, the coolant outlet of the technical cooling tower are discharged by process cooling water
Pipeline is connected with the high temperature side-entrance of technical cooling water heat exchanger, and the high temperature side outlet of the technical cooling water heat exchanger leads to
The cooling water inlet that technical cooling water inflow pipe is crossed with technical cooling tower is connected, the low temperature of the technical cooling water heat exchanger
Side outlet is connected by middle lukewarm water pipeline with the driving heat source entry port of two class heat pumps, the driving heat of the two classes heat pump
Source discharge port is connected by middle water outlet pipe road with the low temperature side-entrance of technical cooling water heat exchanger, the two classes heat pump
Absorber outlet be connected with the import of steam stop, the outlet of the steam stop by high-quality steam pipeline with it is small
The steam inlet connection of steam turbine, the steam (vapor) outlet of the small turbine is by low-quality jet chimney with interlocking entering for stop valve
Mouth connection, the outlet of the interlocking stop valve is connected with the absorber import of two class heat pumps；The power outlet of the small turbine
It is connected by compressor driving device with compressor, the power outlet of the small turbine also passes through water pump transmission device and boiler
Small pump is connected；The heat pump cooling water is connected into pipeline with the condenser inlet of two class heat pumps, the two classes heat pump it is cold
Condenser outlet is connected with heat pump cooling water discharge line, is connected on by the heat pump cooling water discharge line in the import of water compensating valve,
The outlet of the water compensating valve and the import for the treatment of device for water are connected, the outlet of the treatment device for water and the moisturizing of oxygen-eliminating device
Entrance is connected.
2. the system that utilization waste heat according to claim 1 drives process equipment, it is characterised in that：Also include condensate
Valve, reject steam pipeline, steam pressure regulation and valve group is blocked, the reject steam pipeline is with steam pressure regulation and blocks the import of valve group
Connection, the steam pressure regulation and blocking is connected on high-quality steam pipeline by the outlet of valve group, by the low-quality jet chimney
The import of condensate valve is connect, the outlet of the condensate valve is connected on the solidifying water inlet of oxygen-eliminating device.
3. the system that utilization waste heat according to claim 1 drives process equipment, it is characterised in that：Also include liquid level monitoring
Device, the liquid level monitoring device is arranged on oxygen-eliminating device.
4. the system that utilization waste heat according to claim 1 drives process equipment, it is characterised in that：The process cooling water
Heat exchanger is fluoroplastics heat exchanger.
5. the system that utilization waste heat according to claim 2 drives process equipment, it is characterised in that：The steam cut-off
Valve, interlocking stop valve, steam pressure regulation and to block valve group, condensate valve be electrical interlocking control valve.
6. a kind of method that utilization waste heat drives process equipment, it is characterised in that：Will using any right of such as Claims 1 to 5
Described system is sought, the operating procedure of methods described is as follows：
（1）When technical cooling tower is started working, process cooling water flows into technical cooling water heat exchanger and cooled, and then returns
Return technical cooling tower and complete cooling circulation, while the middle warm water after being absorbed heat in technical cooling water heat exchanger drives two class heat pumps
Producing steam, the middle warm water after cooling, which flows into process cooling water heat exchanger, to be continued to absorb heat completion circulation, two class heat pump systems
The steam taken, which enters, returns to two class heat pumps continuation heat absorption completion steam working cycles after small turbine work, small turbine is by steam
Driving is driven to compressor and boiler replenishing water pump output mechanical energy, compressor and boiler replenishing water pump and starts running and serve
Urea production link, heat pump cooling water flows out again after flowing into two class heat pumps, completes the cooling to two class heat pumps, and now steam ends
Valve and interlocking stop valve are opened, and steam pressure regulation and are blocked valve group, condensate valve and water compensating valve and are closed；
（2）When breaking down when two class heat pumps, needing maintenance or not enough steam quality, steam pressure regulation and valve group opening is blocked, this
When condensate valve interlocking open, steam stop and interlocking stop valve interlocking close, pass-out steam enter small turbine work, guarantor
Card urea production link is not influenceed by afterheat utilizing system；Or by site operation personnel's steam off stop valve, then interlock
Stop valve interlocking close, steam pressure regulation and block valve group and condensate valve interlocking open；
（3）When oxygen-eliminating device needs moisturizing, water compensating valve can be opened manually, heat pump cooling water absorbs heat rear portion through two class heat pumps
Divide and enter treatment device for water progress water treatment, be re-fed into oxygen-eliminating device and complete moisturizing, water compensating valve is turned off after the completion of moisturizing；Or
Person is measured the liquid level in oxygen-eliminating device by liquid level monitoring device, when liquid level is less than lower limit set value, opens water compensating valve, when liquid level is high
When upper limit set value, water compensating valve is closed, the moisturizing work realization to oxygen-eliminating device is automatically controlled.
7. the method that utilization waste heat according to claim 6 drives process equipment, it is characterised in that：Process cooling water is from work
Skill cooling tower is discharged, into technical cooling water heat exchanger after to return to the formation high-quality UTILIZATION OF VESIDUAL HEAT IN circulation of technical cooling tower logical
Road；Middle warm water enters two class heat pumps after cooling water heat exchanger outflow, is then returned to cooling water heat exchanger formation heat pump and drives
Dynamic heat-source Cycles passage；Steam flows out from two class heat pumps, into small turbine after return two class heat pumps formation steam circulation passage；
Kinetic energy is output to compressor and boiler replenishing water pump formation mechanical energy output channel from small turbine；Pass-out steam is introduced into steam tune
Valve group is pressed and blocked, small turbine is subsequently entered, then into oxygen-eliminating device pass-out steam passage is formed by condensate valve；Heat pump is cooled down
Water enters outflow after two class heat pumps and forms heat pump cooling-water duct；Heat pump cooling water passes through moisturizing after being flowed out from two class heat pumps
Valve, into treatment device for water, enters back into oxygen-eliminating device formation moisturizing passage.
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| CN201710340584.0A CN106988813B (en) | 2017-05-15 | 2017-05-15 | A kind of system and method using waste heat driving process equipment |
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| CN201710340584.0A CN106988813B (en) | 2017-05-15 | 2017-05-15 | A kind of system and method using waste heat driving process equipment |
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| CN106988813A true CN106988813A (en) | 2017-07-28 |
| CN106988813B CN106988813B (en) | 2019-04-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384479A (en) * | 2018-07-06 | 2021-02-19 | 栗田工业株式会社 | Reverse osmosis treatment method and system |
| CN113864760A (en) * | 2021-08-31 | 2021-12-31 | 中国船舶重工集团公司第七0三研究所 | Deaerator emergency water replenishing control method |
| CN115468333A (en) * | 2022-07-26 | 2022-12-13 | 华能国际电力股份有限公司上海石洞口第二电厂 | Thermal power plant frequency modulation system with steam pressure tank and heat pump |
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| CN203603989U (en) * | 2013-11-22 | 2014-05-21 | 山西平朔煤矸石发电有限责任公司 | Combined heating and power system with waste heat recycling function |
| CN106439777A (en) * | 2016-08-31 | 2017-02-22 | 浙江浙能节能科技有限公司 | Water replenishing and preheating system for back-pressure steam turbine |
| CN206845250U (en) * | 2017-05-15 | 2018-01-05 | 华电电力科学研究院 | A kind of system that process equipment is driven using waste heat |
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2017
- 2017-05-15 CN CN201710340584.0A patent/CN106988813B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004036535A (en) * | 2002-07-04 | 2004-02-05 | Kansai Electric Power Co Inc:The | Power plant main machine exhaust heat recovery system |
| KR20060090404A (en) * | 2005-02-05 | 2006-08-11 | 황치원 | Waste heat recovery system for steam power plant |
| CN203603989U (en) * | 2013-11-22 | 2014-05-21 | 山西平朔煤矸石发电有限责任公司 | Combined heating and power system with waste heat recycling function |
| CN106439777A (en) * | 2016-08-31 | 2017-02-22 | 浙江浙能节能科技有限公司 | Water replenishing and preheating system for back-pressure steam turbine |
| CN206845250U (en) * | 2017-05-15 | 2018-01-05 | 华电电力科学研究院 | A kind of system that process equipment is driven using waste heat |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384479A (en) * | 2018-07-06 | 2021-02-19 | 栗田工业株式会社 | Reverse osmosis treatment method and system |
| CN112384479B (en) * | 2018-07-06 | 2022-03-18 | 栗田工业株式会社 | Reverse osmosis treatment method and system |
| CN113864760A (en) * | 2021-08-31 | 2021-12-31 | 中国船舶重工集团公司第七0三研究所 | Deaerator emergency water replenishing control method |
| CN115468333A (en) * | 2022-07-26 | 2022-12-13 | 华能国际电力股份有限公司上海石洞口第二电厂 | Thermal power plant frequency modulation system with steam pressure tank and heat pump |
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| CN106988813B (en) | 2019-04-09 |
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