CN107387176A - A kind of device and method that step screw expansion generating is carried out using steam waste heat - Google Patents
A kind of device and method that step screw expansion generating is carried out using steam waste heat Download PDFInfo
- Publication number
- CN107387176A CN107387176A CN201710718682.3A CN201710718682A CN107387176A CN 107387176 A CN107387176 A CN 107387176A CN 201710718682 A CN201710718682 A CN 201710718682A CN 107387176 A CN107387176 A CN 107387176A
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- Prior art keywords
- level
- steam
- screw expander
- waste heat
- level screw
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/02—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of multiple-expansion type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
-
- 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
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The invention discloses a kind of step screw expansion generating set of recyclable steam energy and its method, including waste heat boiler, one-level screw expander, two level screw expander, heat collector, three-level screw expander, evaporative condenser；One-level screw expander is connected in series with two level screw expander, it is respectively used for driving one-level generator and secondary generator generates electricity, make full use of the remaining energy of steam, the discharge of two level screw expander enters heat collector and the heat exchange of its interior media for exhaust steam, three-level electrical power generators are driven for three-level screw expander, and exhaust steam is condensed into condensate, water is delivered to condensation water tank by condensate by hot well and condensate pump, realize the recycling of condensed water, and waste heat boiler steam uses generating by multistage, realize making full use of for pressurized vapor, simultaneously electricity consumption has been saved for enterprise.
Description
Technical field
The invention belongs to heat recovery field, and in particular to a kind of to carry out step screw expansion generating using steam waste heat
Devices and methods therefor.
Background technology
During hydrogen sulfide is catalysed and reduced into sulphur and carbon disulphide production, it will produce substantial amounts of heat energy, these heat
If the insufficient utilization of energy, not only causes the huge waste of the energy, and can cause thermal pollution to environment, these usual heat energy
Reclaimed using waste heat boiler, and waste heat boiler can effectively reclaim this part of waste heat will produce the water vapour with pressure, tradition
Steam turbine generating device can not utilize saturation or moist steam to generate electricity, and be only used for superheated steam, and waste heat boiler often produces
Steam be saturation or moist steam, traditional steam turbine is difficult to use in generating.Meanwhile using single stage screw expansion power generation recovery more than
Steam caused by heat boiler, it is low organic efficiency to be present, the halfway problem of energy recovery.
The content of the invention
For overcome the deficiencies in the prior art, present invention offer is a kind of to carry out step screw expansion generating using steam waste heat
Device, water vapour can effectively be reclaimed by using the device and method and generated electricity, saved power consumption for enterprise, reduced
Production cost.
The purpose of the present invention is achieved through the following technical solutions：
A kind of device that step screw expansion generating is carried out using steam waste heat, including waste heat boiler, one-level screw expander, two
Level screw expander, heat collector, three-level screw expander, evaporative condenser；
The air entry of the one-level screw expander and the output end of waste heat boiler are connected by steam pipework, exhaust outlet and two level
The air entry connection of screw expander, the exhaust outlet of two level screw expander is by the pipeline provided with three-level air inlet adjustment valve with taking
One input of hot device connects, and the steam pipework at the one-level screw expander air entry is provided with one-level air inlet adjustment
Valve, one-level screw expander are connected by first class reducer with one-level generator, and the one-level generator passes through one-level grid-connection cabinet
It is connected with power network, two level screw expander is connected by 2-level reducer with secondary generator, and the secondary generator passes through two
Level grid-connection cabinet is connected with power network,
The output end connection of the output axis connection three-level generator of the three-level screw expander, input and heat collector,
One input of output end and evaporative condenser connects, and the output end of the evaporative condenser passes through provided with high-pressure working medium
The pipeline of pump and another input of heat collector connect, and another output end of the heat collector and the input of hot well connect
Connect, the output end of the hot well passes through the input and evaporative condenser with condensation water tank respectively of the pipeline provided with condensate pump
The connection of another input, the output end of the cold energy water tank is defeated by the pipeline provided with boiler replenishing water pump and waste heat boiler
Enter end connection.
Further, at the steam pipework at the one-level air inlet adjustment valve air inlet and three-level air inlet adjustment valve air inlet
Steam pipework between be provided with branch line, the branch line is provided with bypass quck-opening valve and bypass regulator valve.Bypass is set
The branch line of quck-opening valve and bypass regulator valve, it is therefore an objective to when one-level screw expander and two level screw expander trouble hunting
When, steam can be directly by the branch line provided with bypass quck-opening valve and bypass regulator valve, and being directly used in heat collector makes three-level
Screw expander drives three-level electrical power generators.
Further, the steam pipework of the waste heat boiler output end connection is provided with inlet valve, filter and flowmeter.
To detect the steam flow in steam pipework.
Further, the hot well is provided with the water-ring vacuum pump for being used for vacuumizing.
The method that the present invention carries out step screw expansion generating using steam waste heat is using said apparatus, makes waste heat boiler
Caused pressurized vapor enters one-level screw expander work done, and one-level electrical power generators, one-level spiral shell are driven by first class reducer
Exhaust steam after bar expanding machine work done enters two level screw expander work done, drives secondary generator to generate electricity by 2-level reducer,
Exhaust steam after two level screw expander work done, which enters in heat collector, transfers heat to circulatory mediator, and exhaust steam is condensed into water, water
It is delivered to condensation water tank and evaporative condenser recycles, circulatory mediator heat absorption flashes to high-pressure medium gas and enters three-level spiral shell
Bar expanding machine work done, three-level electrical power generators are driven, the circulatory mediator after work done is condensed into liquid into evaporative condenser and is situated between
Matter is reentering heat collector recycling by the pressurization of high-pressure working medium pump.
Further, when one-level screw expander and two level screw expander trouble hunting, band caused by waste heat boiler
Pressure steam is directly entered in heat collector by branch line, transfers heat to circulatory mediator, and steam is condensed into water, water conveying
Recycled to condensation water tank and evaporative condenser, it is swollen into three-level screw rod that circulatory mediator heat absorption flashes to high-pressure medium gas
Swollen machine work done, drives three-level electrical power generators, and the circulatory mediator after work done is condensed into liquid medium into evaporative condenser and existed
Heat collector is reentered by the pressurization of high-pressure working medium pump to recycle, the branch line is arranged at one-level air inlet adjustment valve air inlet
Between the steam pipework at steam pipework and three-level air inlet adjustment valve air inlet at mouthful.
In the present invention：The steam of waste heat boiler passes sequentially through one-level screw expander and two level screw expansion by pipeline
Machine, for driving one-level generator and secondary generator to generate electricity, make full use of the remaining energy of steam, the discharge of two level screw expander
Enter heat collector and its circulatory mediator for exhaust steam and exchange heat, exhaust steam is condensed into water, and water is delivered to condensation water tank and vaporation-type is cold
Condenser is reused, and circulatory mediator heat absorption flashes to 1.2MPa gases at high pressure and enters three-level screw expander, three-level screw expansion
Machine is rotated so as to drive three-level electrical power generators, and it is low that high-pressure medium gas becomes 0.4MPa after the acting of three-level screw expander
Body of calming the anger condenses into evaporative condenser, and condensed liquid medium is inhaled again by the pressurization of high-pressure working medium pump into heat collector
Heat, completes whole circulating generation process, and waste heat boiler steam passes through Multi-class propagation, realizes making full use of for pressurized vapor, simultaneously
Electricity consumption has been saved for enterprise.
Brief description of the drawings
Fig. 1 is the structural representation for the device that the present invention carries out step screw expansion generating using steam waste heat.
In figure：1. waste heat boiler；2. intake valve；3. filter；4. flowmeter；5. bypass quck-opening valve；6. bypass regulator valve；
7. one-level air inlet adjustment valve；8. one-level screw expander；9. first class reducer；10. one-level generator；11. one-level grid-connection cabinet；
12. three-level air inlet adjustment valve；13. heat collector；14. three-level screw expander；15. three-level generator；16. evaporative condenser；
17. high-pressure working medium pump；18. branch line；19. hot well；20. water-ring vacuum pump；21. condensate pump；22. two level screw expansion
Machine；23. 2-level reducer；24. secondary generator；25. two level grid-connection cabinet；26. condensation water tank；27. boiler replenishing water pump.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
As shown in figure 1, a kind of device that step screw expansion generating is carried out using steam waste heat, including waste heat boiler 1, one
Level screw expander 8, two level screw expander 22, heat collector 13, three-level screw expander 14, evaporative condenser 16；It is described
The air entry of one-level screw expander 8 is connected with the output end of waste heat boiler 1 by steam pipework, and exhaust outlet and two level screw rod are swollen
The air entry connection of swollen machine 22, one-level screw expander and two level screw expander are connected in series, make full use of steam thermal energy,
And then it is changed into mechanical energy, making full use of for steam energy is realized, the exhaust outlet of two level screw expander 22 passes through provided with three
The level pipeline of air inlet adjustment valve 12 is connected with an input of heat collector 13, and three-level air inlet adjustment valve is used to adjust three-level generating
The generated output of machine, the steam pipework at the air entry of one-level screw expander 8 are provided with one-level air inlet adjustment valve 7, one-level
Enter the setting of steam control valve, can control one-level generator and secondary generator rotating speed and generated output, one-level screw expander 8 leads to
First class reducer 9 to be crossed to be connected with one-level generator 10, the one-level generator 10 is connected by one-level grid-connection cabinet 11 with power network, and two
Level screw expander 22 is connected by 2-level reducer 23 with secondary generator 24, and the secondary generator 24 is grid-connected by two level
Cabinet 25 is connected with power network, and described one-level generator and secondary generator are connected by one-level grid-connection cabinet and two level grid-connection cabinet with power network
Connect；When one-level generator and secondary generator rotating speed reach 1500rpm, and the voltage of one-level generator and secondary generator,
When frequency, phase angle are identical with power network, described one-level grid-connection cabinet and two level grid-connection cabinet automatic closing so that described one-level hair
Motor and secondary generator are connected with power network；
The output axis connection three-level generator 15 of the three-level screw expander 14, an output end of input and heat collector 13
Connection, output end are connected with an input of evaporative condenser 16, and the output end of the evaporative condenser 16 is by setting
There is the pipeline of high-pressure working medium pump 17 to be connected with another input of heat collector 13, another output end of the heat collector 13 with
The input connection of hot well 19, the output end of the hot well 19 by the pipeline provided with condensate pump 21 respectively with condensation water tank 26
Input connected with another input of evaporative condenser 16, the output end of the cold energy water tank 26 passes through provided with boiler
The pipeline of small pump 27 is connected with the input of waste heat boiler 1.
Further, the steam pipework at the air inlet of one-level air inlet adjustment valve 7 is vented with two level screw expander 22
Branch line 18 is provided between the pipeline of mouth connection, the branch line is provided with bypass quck-opening valve 5 and bypass regulator valve 6.If
Put the branch line of bypass quck-opening valve and bypass regulator valve, it is therefore an objective to when one-level screw expander and two level screw expander failure
During maintenance, steam can be directly by the branch line provided with bypass quck-opening valve and bypass regulator valve, and being directly used in heat collector makes
Three-level screw expander drives three-level electrical power generators.
Further, the steam pipework of the waste heat boiler output end connection is provided with inlet valve 2, filter 3 and flow
Meter 4.To detect the steam flow in steam pipework.
Further, the hot well is provided with the water-ring vacuum pump 20 for being used for vacuumizing, described water-ring vacuum pump
For maintaining hot well negative pressure to -20KPa.
The method that step screw expansion generating is carried out using steam waste heat is using said apparatus, is made caused by waste heat boiler
Pressurized vapor is swollen into one-level screw rod by the steam pipework provided with inlet valve, filter, flowmeter and one-level air inlet adjustment valve
Swollen machine work done, one-level electrical power generators are driven by first class reducer, the exhaust steam after one-level screw expander work done enters two level
Screw expander work done, secondary generator is driven to generate electricity by 2-level reducer, the exhaust steam after two level screw expander work done is led to
Cross the pipeline provided with three-level air inlet adjustment valve and enter heat collector, the circulatory mediator heat exchange with heat collector is condensed into water, and water passes through
Water is delivered to condensation water tank and evaporative condenser recycling by hot well and condensate pump, and circulatory mediator heat absorption flashes to
1.2MPa high-pressure mediums gas enters three-level screw expander work done, drives three-level electrical power generators, becomes after circulatory mediator work done
Liquid medium is condensed into for 0.4MPa low-pressure gases into evaporative condenser to reenter and take by the pressurization of high-pressure working medium pump
Hot device recycles.
Further, at the steam pipework at one-level air inlet adjustment valve air inlet and three-level air inlet adjustment valve air inlet
Branch line is provided between steam pipework, branch line is provided with bypass quck-opening valve and bypass regulator valve, when one-level screw expansion
When machine and two level screw expander trouble hunting, pressurized vapor caused by waste heat boiler enters heat collector by branch line, with
The circulatory mediator heat exchange of heat collector is condensed into water, and water is delivered to condensation water tank and vaporation-type by water by hot well and condensate pump
Condenser recycles, and circulatory mediator heat absorption flashes to high-pressure medium gas and enters three-level screw expander work done, drives three-level
Electrical power generators, the circulatory mediator after work done are condensed into liquid medium into evaporative condenser and pressurizeed by high-pressure working medium pump
Reenter heat collector recycling.
The energy recovery that the embodiment of the present invention can be used for carbon disulphide production field is the foregoing is only, is not thereby limited
The scope of the claims of the present invention, every equivalent structure done using present specification or equivalent flow conversion are straight
Connect or be used in other related industrial technical fields indirectly, be similarly included in the scope of patent protection of the present invention.
Claims (6)
1. a kind of device that step screw expansion generating is carried out using steam waste heat, it is characterised in that including waste heat boiler, one-level
Screw expander, two level screw expander, heat collector, three-level screw expander, evaporative condenser；
The air entry of the one-level screw expander and the output end of waste heat boiler are connected by steam pipework, exhaust outlet and two level
The air entry connection of screw expander, the exhaust outlet of two level screw expander is by the pipeline provided with three-level air inlet adjustment valve with taking
One input of hot device connects, and the steam pipework at the one-level screw expander air entry is provided with one-level air inlet adjustment
Valve, one-level screw expander are connected by first class reducer with one-level generator, and the one-level generator passes through one-level grid-connection cabinet
It is connected with power network, two level screw expander is connected by 2-level reducer with secondary generator, and the secondary generator passes through two
Level grid-connection cabinet is connected with power network；
The output end connection of the output axis connection three-level generator of the three-level screw expander, input and heat collector,
One input of output end and evaporative condenser connects, and the output end of the evaporative condenser passes through provided with high-pressure working medium
The pipeline of pump and another input of heat collector connect, and another output end of the heat collector and the input of hot well connect
Connect, the output end of the hot well passes through the input and evaporative condenser with condensation water tank respectively of the pipeline provided with condensate pump
The connection of another input, the output end of the cold energy water tank is defeated by the pipeline provided with boiler replenishing water pump and waste heat boiler
Enter end connection.
2. a kind of device that step screw expansion generating is carried out using steam waste heat according to claim 1, its feature are existed
In between the steam pipework at steam pipework and three-level air inlet adjustment valve air inlet at the one-level air inlet adjustment valve air inlet
Provided with branch line, the branch line is provided with bypass quck-opening valve and bypass regulator valve.
3. a kind of device that step screw expansion generating is carried out using steam waste heat according to claim 1, its feature are existed
In the steam pipework of the waste heat boiler output end connection is provided with inlet valve, filter and flowmeter.
4. a kind of device that step screw expansion generating is carried out using steam waste heat according to claim 1, its feature are existed
In the hot well is provided with the water-ring vacuum pump for being used for vacuumizing.
5. a kind of method that step screw expansion generating is carried out using steam waste heat, it is characterized in that, it is with pressure caused by waste heat boiler
Steam enters one-level screw expander work done, drives one-level electrical power generators by first class reducer, one-level screw expander is made
Exhaust steam after work(enters two level screw expander work done, drives secondary generator to generate electricity by 2-level reducer, two level screw rod is swollen
Exhaust steam after swollen machine work done, which enters in heat collector, transfers heat to circulatory mediator, and exhaust steam is condensed into water, and water is delivered to condensation
Water tank and evaporative condenser recycle, and circulatory mediator heat absorption flashes to high-pressure medium gas and made into three-level screw expander
Work(, drives three-level electrical power generators, and the circulatory mediator after work done is condensed into liquid medium through too high into evaporative condenser
Pressure working medium pump pressurization reenters heat collector recycling.
6. a kind of method that step screw expansion generating is carried out using steam waste heat according to claim 5, it is characterized in that,
When one-level screw expander and two level screw expander trouble hunting, pressurized vapor caused by waste heat boiler passes through branch line
It is directly entered in heat collector, transfers heat to circulatory mediator, steam is condensed into water, and water is delivered to condensation water tank and vaporation-type
Condenser recycles, and circulatory mediator heat absorption flashes to high-pressure medium gas and enters three-level screw expander work done, drives three-level
Electrical power generators, the circulatory mediator after work done are condensed into liquid medium into evaporative condenser and pressurizeed by high-pressure working medium pump
Heat collector recycling is reentered, the branch line is arranged at the steam pipework and three at one-level air inlet adjustment valve air inlet
Between steam pipework at level air inlet adjustment valve air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718682.3A CN107387176A (en) | 2017-08-21 | 2017-08-21 | A kind of device and method that step screw expansion generating is carried out using steam waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710718682.3A CN107387176A (en) | 2017-08-21 | 2017-08-21 | A kind of device and method that step screw expansion generating is carried out using steam waste heat |
Publications (1)
| Publication Number | Publication Date |
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| CN107387176A true CN107387176A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710718682.3A Withdrawn CN107387176A (en) | 2017-08-21 | 2017-08-21 | A kind of device and method that step screw expansion generating is carried out using steam waste heat |
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| Country | Link |
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| CN (1) | CN107387176A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107762581A (en) * | 2017-11-29 | 2018-03-06 | 山西铁峰化工有限公司 | A kind of screw expansion generating set full-automatic control system and method |
| CN109813138A (en) * | 2019-03-07 | 2019-05-28 | 大唐东营发电有限公司 | A kind of boiler condenser two-stage vacuum pump control system |
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| CN102782262A (en) * | 2010-01-15 | 2012-11-14 | 理查德·朗森 | One and two-stage direct gas and steam screw expander generator system (DSG) |
| CN105840243A (en) * | 2016-05-19 | 2016-08-10 | 神华集团有限责任公司 | Steam power generation device and steam power generation system |
| CN106321172A (en) * | 2015-06-30 | 2017-01-11 | 阿耐思特岩田株式会社 | Binary power generation system and binary power generation method |
| CN206368723U (en) * | 2016-12-28 | 2017-08-01 | 山西易通环能科技集团有限公司 | A kind of electricity generation system of utilization biomass energy |
| CN206368724U (en) * | 2016-12-28 | 2017-08-01 | 山西易通环能科技集团有限公司 | A kind of adjustable operating mode type low-temperature cogeneration device |
| CN207348914U (en) * | 2017-08-21 | 2018-05-11 | 山西铁峰化工有限公司 | A kind of device that step screw expansion power generation is carried out using steam waste heat |
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2017
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| CN102782262A (en) * | 2010-01-15 | 2012-11-14 | 理查德·朗森 | One and two-stage direct gas and steam screw expander generator system (DSG) |
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| CN109813138A (en) * | 2019-03-07 | 2019-05-28 | 大唐东营发电有限公司 | A kind of boiler condenser two-stage vacuum pump control system |
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Application publication date: 20171124 |