CN105114810A - Pressure adjusting system for hydrogen pipe network and using method - Google Patents
Pressure adjusting system for hydrogen pipe network and using method Download PDFInfo
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- CN105114810A CN105114810A CN201510606241.5A CN201510606241A CN105114810A CN 105114810 A CN105114810 A CN 105114810A CN 201510606241 A CN201510606241 A CN 201510606241A CN 105114810 A CN105114810 A CN 105114810A
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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Abstract
The invention provides a pressure adjusting system for a hydrogen pipe network and a using method. A buffer tank is connected to a main pipe line of the system. The main pipe line is connected with a hydrogen supply device and a hydrogen utilization pipe network through hydrogen supply and utilization pressure control valves, and the two valves are connected with hydrogen supply and utilization pressure controllers respectively. A fuel gas pipe network and a torch pipe network are connected to the main pipe line through two emptying control valves, and the two valves are connected with emptying pressure controllers respectively. According to the using method, the hydrogen supply pressure control valve controls external hydrogen pressure supply of the device, the hydrogen utilization pressure control valve adjusts pressure of the hydrogen utilization pipe network, when the hydrogen utilization amount is increased or decreased slightly, the buffer tank releases or stores hydrogen to maintain hydrogen pressure stable, and the situation that the hydrogen supply device frequently increases or decreases the amount is avoided; in normal production, the two emptying control valves are closed, and therefore material and energy consumption is reduced; the emptying pressure controllers open the emptying control valves in time according to the pressure of the main pipe line to ensure safety; when the hydrogen utilization amount is increased rapidly, the buffer tank releases the hydrogen to guarantee the minimum production pressure for at least 20 minutes, and therefore time is gained for hydrogen yield increase and fault removal.
Description
Technical field
The present invention relates to a kind of regulation technology of hydrogen ductwork pressure, be specially pressure regulating system and the using method of a kind of hydrogen pipe network being applicable to oil refinery.
Background technique
In the raw material of oil refinery, heaviness crude oil and high-sulphur crude constantly increase, and the increasingly stringent that Environmental protection requires, therefore the hydrogenation plant scale of oil refinery increases thereupon, and the hydrogen pipe network planning mould of a factory strengthens.
The hydrogen pipe host main line of an oil refinery connects the continuous reformer producing hydrogen and hydrogen-generator, connects the multiple hydrogenation plants using hydrogen simultaneously.Disconnect from network stopping using when being connected on certain online hydrogenation plant of hydrogen pipe, or certain hydrogenation plant access hydrogen pipe network brings into use or the change of certain hydrogenation plant feed properties, carry and fall treating capacity, on-off reaction severity and change hydrogen amount, or certain hydrogenation plant switchover operation make-up hydrogen compressor etc. all can cause the hydrogen pipe network pressure surge of full factory.If when particularly the make-up hydrogen compressor entrance Hydrogen Vapor Pressure of hydrogenation plant is too low, compressor Concatenate shut-down may be caused, hydrogenation plant safety and steady will be had a strong impact on and run.
In order to stablize the hydrogen ductwork pressure of full factory, the method that current each oil refinery generally adopts keeps emptying amount certain in hydrogen pipe network.Namely connect fuel gas pipe network at hydrogen pipe network through emptying control valve, strengthen for hydrogen amount, when hydrogenation plant cannots be used up, unnecessary hydrogen is sent into fuel gas pipe network through emptying control valve and is recovered.And when hydrogen pipe network Pressure Drop is low, the hydrogen of the aperture and original emptying that reduce emptying control valve just can supplement in time and improve hydrogen ductwork pressure, to reduce the decline of hydrogen ductwork pressure as far as possible.Although the hydrogen partial of emptying is finally be recycled to fuel gas pipe, but this method Shi Quan factory energy and material consumption rises, therefore some oil refinery is in order to close the emptying control valve of hydrogen pipe network, formulate multiple hydrogen administrative provisions, strengthen the monitoring to whole hydrogen pipe network, require that each hydrogenation plant is linked up with hydrogen-generator in advance when increase hydrogen amount, first improve hydrogen output ability increase hydrogen amount, the stable of hydrogen ductwork pressure can be maintained so to a certain extent, but when running into accident, a safety valve jumping up is had in such as certain hydrogenation plant, full factory hydrogen pipe network pressure drop can be caused, hydrogen-generator cannot improve for hydrogen amount in the short time, the decline of hydrogen ductwork pressure, the even device interlocking stopping production of the great fluctuation of each hydrogenation plant will be caused, cause heavy losses.
Summary of the invention
The object of the invention is the pressure regulating system designing a kind of hydrogen pipe network, one or more knock out drum is accessed in hydrogen pipe network, the pressure of hydrogen pipe network is regulated with the hydrogen in knock out drum, do not need to keep certain emptying amount for a long time, when increasing suddenly by hydrogen amount, in knock out drum, hydrogen also can supplement in time, ensures hydrogen pipe net pressure maitamce.
Another object of the present invention is the using method of the pressure regulating system designing a kind of hydrogen pipe network, by hydrogen supply pressure controller, automatically regulate hydrogen supply pressure controlled valve, use hydrogen pressure control valve and emptying to fuel gas pipe net control valve and emptying to the aperture of flare stack net control valve with hydrogen pressure controller and emptying pressure controller, to maintain hydrogen supply device, to use the Hydrogen Vapor Pressure of hydrogen pipe network and trunk pipeline in setting range.
The pressure regulating system of a kind of hydrogen pipe network of the present invention's design, hydrogen pipe host trunk pipeline is connected with one or more hydrogen supply devices, what be connected with multiple hydrogenation plant uses hydrogen pipe network simultaneously, the concrete quantity of hydrogen supply device and hydrogenation plant is determined according to oil refinery general arrangement, trunk pipeline also connects fuel gas pipe network, and the present invention's design connects one or more knock out drum on trunk pipeline.Each hydrogen supply device is furnished with a hydrogen supply pressure controlled valve, each hydrogen supply device connects trunk pipeline through its hydrogen supply pressure controlled valve respectively, each hydrogen supply device is furnished with the hydrogen supply pressure controller that connects its hydrogen output terminal simultaneously, and the control end of each hydrogen supply pressure controller connects the hydrogen supply pressure controlled valve of this hydrogen supply device.Each hydrogen supply pressure controller is positive interaction controller, when the pressure measuring hydrogen supply device belonging to it and send outside hydrogen exceedes its setting value, control its hydrogen supply Stress control valve opening connected to strengthen, when the pressure measuring hydrogen supply device belonging to it and send outside hydrogen is less than its setting value, controls its hydrogen supply Stress control valve opening connected and reduce; Trunk pipeline uses hydrogen pipe network through connecting with hydrogen pressure control valve, be connected to hydrogen pipe network and use hydrogen pressure controller, connect with the control end of hydrogen pressure controller and use hydrogen pressure control valve, be reverse acting controller with hydrogen pressure controller, when the pressure of mensuration hydrogen pipe network exceedes its setting value, its instruction uses hydrogen pressure control valve aperture to reduce, and when the pressure of mensuration hydrogen pipe network is less than its setting value, strengthens by hydrogen pressure control valve aperture; Trunk pipeline connects fuel gas pipe network through emptying to fuel gas pipe net control valve, trunk pipeline is connected to emptying pressure controller, a control end of emptying pressure controller connects emptying to fuel gas pipe net control valve, emptying pressure controller is positive interaction controller, when the pressure measuring trunk pipeline exceedes its setting value, its instruction makes emptying strengthen to fuel gas pipe network control valve opening, when the pressure measuring trunk pipeline is less than its setting value, emptying is decreased to closedown to fuel gas pipe network control valve opening.During normal production, emptying is in normally off to fuel gas pipe net control valve.
Described trunk pipeline also connects torch pipe network through emptying to flare stack net control valve, another control end of emptying pressure controller connects emptying to flare stack net control valve, when emptying reaches maximum to fuel gas pipe network control valve opening, when the pressure of mensuration trunk pipeline still exceedes emptying pressure controller setting value, its instruction emptying makes its aperture strengthen to flare stack net control valve, when the pressure measuring trunk pipeline is less than emptying pressure controller setting value, emptying is first decreased to closedown to flare stack network control valve opening, and then reduce emptying to fuel gas pipe network control valve opening.During normal production, emptying is in normally off to torch pipe network control valve.
Torch pipe network is the pipe network of the emptying gas pipeline composition of each device of full factory, can be recycled to fuel gas pipe network as fuel, directly burnt in an atmosphere time defective by flare tip when the gas in torch pipe network is qualified.
The volume total amount of described one or more knock out drum is 300 ~ 500m
3, knock out drum is for storing pipe network hydrogen, and described knock out drum Maximum operating pressure is equal to or greater than 2.4MPa, and design pressure is equal to or greater than 2.6MPa.
The pressure set points scope 1.90MPa ~ 1.95MPa of described hydrogen pressure controller.
The pressure set points scope 2.25MPa ~ 2.30MPa of described hydrogen supply pressure controller.
The pressure set points scope 2.30MPa ~ 2.35MPa of described emptying pressure controller.
Main pipe linear pressure control range is 2.15MPa ~ 2.25MPa.Hydrogen compressibility factor under different pressures is calculated by generalization virial coefficient relation, then volume 400m when calculating different pressures
3knock out drum in the molal quantity of hydrogen, can show that this knock out drum pressure can discharge hydrogen 1000Nm when 2.15MPa ~ 2.25MPa drops to 1.9MPa
3, can release hydrogen 1700Nm when dropping to 1.7MPa
3.Nm
3for mark cube, refer to that N represents standard conditions at the gas volume of 0 degree Celsius of 1 standard atmosphere pressure.As can be seen here, when trunk pipeline is connected with 400m
3knock out drum, when occurring accident, what it connected increases 5000Nm suddenly by certain hydrogenation plant hydrogen amount in hydrogen pipe network
3during/h, knock out drum enters the time that trunk pipeline can maintain with hydrogen ductwork pressure is not less than 1.7MPa reach 20 minutes by discharging wherein hydrogen.Each hydrogenation plant being not less than the producing with guarantees being maintained under hydrogen ductwork pressure of 1.7MPa, can not stopping work by generating means interlocking, and the hydrogen supply device that is designed to of knock out drum improves treating capacity, increase hydrogen output with guarantee hydrogen ductwork pressure, has won the valuable time.
Otherwise, when with when in hydrogen pipe network, certain hydrogenation plant hydrogen amount significantly reduces suddenly, to turn down with hydrogen ductwork pressure control valve, the pressure of trunk pipeline raises, knock out drum stores rich hydrogen, gain time and allow hydrogen supply device reduce treating capacity gradually, to reduce hydrogen output, can avoid or reduce the hydrogen gas automatic blow down amount in trunk pipeline, reduce full factory material consumption energy consumption.
According to each hydrogenation plant situation in the use hydrogen pipe network of each oil refinery, select the volume of knock out drum.
The using method of the pressure regulating system of a kind of hydrogen pipe network of the present invention's design is as follows:
Described each hydrogen supply device controls it by the hydrogen supply pressure controlled valve that it configures, and to send Hydrogen Vapor Pressure outside be 2.25MPa ~ 2.30MPa, the hydrogen of each hydrogen supply device enters into trunk pipeline through respective hydrogen supply pressure controlled valve, and give knock out drum pressurising, then process hydrogen pressure control valve enters and uses hydrogen pipe network.When the hydrogen supply pressure controller of certain hydrogen supply device measure pressure that this hydrogen supply device sends hydrogen outside exceed its setting value time, its hydrogen supply Stress control valve opening controlling to connect strengthens; When the pressure that this hydrogen supply device of mensuration sends hydrogen outside is less than its setting value, its hydrogen supply pressure control valve aperture controlling to connect reduces.
By the pressure stability of hydrogen pipe network in 1.90MPa ~ 1.95MPa, slightly change the fuctuation within a narrow range caused with hydrogen ductwork pressure in production by hydrogen amount, by automatically regulating with hydrogen pressure control valve.When exceeding its setting value with the pressure of hydrogen pressure controller mensuration hydrogen pipe network, instruction uses hydrogen pressure control valve aperture to reduce; When the pressure of mensuration hydrogen pipe network is less than its setting value, its instruction uses hydrogen pressure control valve aperture to strengthen.
The trunk pipeline pressure rushing tank that eases up is identical, controls as 2.15MPa ~ 2.25MPa, and when main pipe linear pressure has fuctuation within a narrow range, knock out drum release or storage of hydrogen maintain main pipe linear pressure and be stabilized in control range.Dispatcher selects one as the hydrogen supply device regulating trunk pipeline Hydrogen Vapor Pressure in multiple hydrogen supply device, when the emptying pressure controller that trunk pipeline connects measures pressure lower than 2.1MPa, dispatcher improve this hydrogen supply device treating capacity, increase its hydrogen output, to improve trunk pipeline Hydrogen Vapor Pressure.Due to trunk pipeline connect the adjustment of knock out drum, hydrogen supply device does not need the treating capacity frequently regulating this hydrogen supply device.When the pressure that emptying pressure controller measures trunk pipeline exceedes its setting value, its instruction makes emptying strengthen to fuel gas pipe network control valve opening, simultaneously dispatcher reduce the hydrogen supply device of adjustment trunk pipeline Hydrogen Vapor Pressure treating capacity, reduce its hydrogen output; When the pressure of mensuration trunk pipeline is less than its setting value, its instruction makes emptying be reduced to closedown to fuel gas pipe network control valve opening.
When the pressure that emptying to fuel gas pipe network control valve opening reaches maximum, emptying pressure controller measures trunk pipeline still exceedes its setting value, emptying pressure controller instruction emptying strengthens to flare stack network control valve opening, trunk pipeline hydrogen, from two rapid blowdown pressure letdown of pipeline, ensures safety.When the pressure measuring trunk pipeline is less than its setting value, emptying pressure controller first makes emptying be decreased to cut out to flare stack network control valve opening.
When occurring accident, when increasing suddenly by hydrogen pipe network hydrogen amount, be unexpected downward trend with hydrogen ductwork pressure, reach maximum by hydrogen pressure control valve aperture, main pipe linear pressure declines thereupon, knock out drum discharges wherein hydrogen and enters trunk pipeline, and maintenance hydrogen ductwork pressure slows down decline, and the time that the pressure of maintenance hydrogen pipe network is not less than 1.7MPa reaches 20 minutes.This allowing racing against time hydrogen supply device improve treating capacity, increasing hydrogen output to ensure trunk pipeline and the hydrogen gas pressure stabilization with hydrogen pipe network, allows related personnel check and the eliminating hydrogen amount fault of uprushing simultaneously.
When significantly reducing suddenly by hydrogen pipe network hydrogen amount, reduce by hydrogen ductwork pressure control valve aperture, the pressure of trunk pipeline increases, knock out drum stores rich hydrogen, slow down the pressure ramp-up rate of trunk pipeline, race against time and allow hydrogen supply device reduce treating capacity gradually, to reduce hydrogen output, allow related personnel search the reason using hydrogen amount anticlimax simultaneously.The hydrogen gas automatic blow down avoided or reduce in trunk pipeline, to fuel gas pipe network, reduces full factory material consumption energy consumption.
Compared with prior art, the pressure regulating system of a kind of hydrogen pipe network of the present invention and the advantage of using method are: 1, monitor in real time with hydrogen pressure controller and use hydrogen ductwork pressure, because there being knock out drum to discharge in time or storage of hydrogen, by adjustment hydrogen pressure control valve automatically, ensure the pressure stability with hydrogen pipe network; 2, normal productive process, emptying is all in closed condition to fuel gas pipe net control valve and emptying to flare stack net control valve, has stopped the huge waste that the long-term emptying of hydrogen in hydrogen pipe network causes, and significantly reduces full factory material consumption energy consumption; 3, with being slightly elevated by hydrogen amount of hydrogen pipe network time, affect the pressure surge of trunk pipeline, discharged or storage of hydrogen by knock out drum, maintain main pipe linear pressure to stablize, avoid hydrogen supply device frequently to carry and fall treating capacity (i.e. raising or reduction device inlet amount, to increase or to reduce device for hydrogen amount) with steady hydrogen ductwork pressure, the safety and steady being conducive to hydrogen supply device is produced; 4, when certain hydrogenation plant occurs that accident hydrogen amount rolls up suddenly, knock out drum can be maintained by release hydrogen and be not less than with hydrogen ductwork pressure the minimum pressure at least 20 minutes ensureing that hydrogenation plant is produced, the quality time is won for hydrogen supply device increases hydrogen output, also for related personnel check and the fault that eliminating hydrogen amount is uprushed has striven for the time, particularly avoid causing the interlocking of hydrogenation plant to stop work with hydrogen ductwork pressure bust; 5, when certain hydrogenation plant hydrogen amount reduces suddenly, main pipe linear pressure raises, and knock out drum will store more hydrogen, avoid or reduce hydrogen gas automatic blow down to fuel gas pipe network, to reduce full factory material consumption energy consumption; 6, knock out drum and each pressure controller, control valve all can adopt the Related product of prior art, therefore native system is implemented conveniently, to be easy to apply on the net at the hydrogen pipe of oil refinery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure regulating system embodiment of this hydrogen pipe network.
Number in the figure: T1, use hydrogen pressure controller, V1, use hydrogen pressure control valve, the hydrogen supply pressure controller of T2A, hydrogen supply device A, the hydrogen supply pressure controlled valve of V2A, hydrogen supply device A, the hydrogen supply pressure controller of T2B, hydrogen supply device B, the hydrogen supply pressure controlled valve of V2B, hydrogen supply device B, the hydrogen supply pressure controller of T2C, hydrogen supply device C, the hydrogen supply pressure controlled valve of V2C, hydrogen supply device C, T3, emptying pressure controller, V3, emptying are to fuel gas pipe net control valve; V4, emptying are to flare stack net control valve.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
The pressure regulating system embodiment of hydrogen pipe network:
As shown in Figure 1, in Fig. 1, heavy line is depicted as this routine hydrogen pipe host trunk pipeline to the pressure regulating system embodiment of this hydrogen pipe network, and trunk pipeline connects a volume 400m
3knock out drum, this knock out drum Maximum operating pressure 2.4MPa, design pressure 2.6MPa.This example has hydrogen supply device A, B and C, three hydrogen supply devices are connected trunk pipeline through hydrogen supply pressure controlled valve V2A, V2B with V2C respectively, hydrogen supply device A, B and C are furnished with hydrogen supply pressure controller T2A, T2B and T2C of being connected its hydrogen output terminal respectively, the control end of hydrogen supply pressure controller T2A connects hydrogen supply pressure controlled valve V2A, the control end of hydrogen supply pressure controller T2B connects hydrogen supply pressure controlled valve V2B, the control end of hydrogen supply pressure controller T2C connects hydrogen supply pressure controlled valve V2C, and hydrogen supply pressure controller T2A, T2B and T2C are positive interaction controller.Trunk pipeline uses hydrogen pipe network through connecting with hydrogen pressure control valve V1, and be connected to hydrogen pressure controller T1 with hydrogen pipe network, connecting with hydrogen pressure control valve V1 with the control end of hydrogen pressure controller T1, is reverse acting controller with hydrogen pressure controller T1.Trunk pipeline connects fuel gas pipe network through emptying to fuel gas pipe net control valve V3, trunk pipeline is connected to emptying pressure controller T3, a control end of emptying pressure controller T3 connects emptying to fuel gas pipe net control valve V3, and emptying pressure controller T3 is positive interaction controller.This routine trunk pipeline also connects torch pipe network through emptying to flare stack net control valve V4, and another control end of emptying pressure controller T3 connects emptying to flare stack net control valve V4.
This example is 1.90MPa ~ 1.95MPa by the pressure set points scope of hydrogen pressure controller T1.
The pressure set points scope of this routine hydrogen supply pressure controller T2 is 2.25MPa ~ 2.30MPa.
The pressure set points scope of this routine emptying pressure controller T3 is 2.30MPa ~ 2.35MPa.
The using method embodiment of the pressure regulating system of hydrogen pipe network:
The using method embodiment of the pressure regulating system of this hydrogen pipe network adopts the pressure regulating system embodiment of above-mentioned hydrogen pipe network.
This routine hydrogen supply pressure controlled valve V2A, V2B and V2C control three hydrogen supply devices A, B and C respectively, and to send Hydrogen Vapor Pressure outside be 2.25MPa ~ 2.30MPa.The hydrogen of hydrogen supply device A, B and C enters into trunk pipeline respectively through hydrogen supply pressure controlled valve V2A, V2B and V2C, and gives knock out drum pressurising, then process hydrogen pressure control valve V1 enters and uses hydrogen pipe network.When certain hydrogen supply pressure controller measure this hydrogen supply device send outside Hydrogen Vapor Pressure exceed its setting value time, its instruction makes the hydrogen supply Stress control valve opening of this hydrogen supply device strengthen, when the pressure that mensuration hydrogen supply device sends hydrogen outside is less than its setting value, its instruction makes the hydrogen supply Stress control valve opening of this hydrogen supply device reduce.
With the Stress control of hydrogen pipe network in 1.90MPa ~ 1.95MPa, when exceeding its setting value with the pressure of hydrogen pressure controller T1 mensuration hydrogen pipe network, its instruction uses hydrogen pressure control valve V1 aperture to reduce, when the pressure of mensuration hydrogen pipe network is less than its setting value, its instruction uses hydrogen pressure control valve V1 aperture to strengthen.
The trunk pipeline pressure rushing tank that eases up is identical, controls as 2.15MPa ~ 2.25MPa, and when pressure has fuctuation within a narrow range, knock out drum release or storage of hydrogen maintain main pipe linear pressure and be stabilized in control range.This routine dispatcher selects hydrogen supply device A as the hydrogen supply device regulating trunk pipeline Hydrogen Vapor Pressure, when the emptying pressure controller T3 that trunk pipeline connects measures pressure lower than 2.1MPa, dispatcher improves hydrogen supply device A treating capacity, makes it hydrogen output increase, to improve main pipe linear pressure; When the pressure that emptying pressure controller T3 measures trunk pipeline exceedes its setting value, its instruction makes emptying strengthen to fuel gas pipe net control valve V3 aperture, simultaneously dispatcher reduce hydrogen supply device A treating capacity, reduce its hydrogen output; When the pressure of emptying pressure controller T3 mensuration trunk pipeline is less than its setting value, its instruction makes emptying be reduced to closedown to fuel gas pipe net control valve V3 aperture.
When the pressure that emptying to fuel gas pipe net control valve V3 aperture reaches maximum, emptying pressure controller T3 measures trunk pipeline still exceedes its setting value, emptying pressure controller T3 instruction emptying strengthens to flare stack net control valve V4 aperture.When the pressure measuring trunk pipeline is less than controller setting value, emptying pressure controller T3 first makes emptying be decreased to closedown to flare stack net control valve V4 aperture.
When occurring accident, when increasing suddenly by hydrogen pipe network hydrogen amount, be unexpected downward trend with the pressure of hydrogen pipe network, reach maximum by hydrogen pressure control valve V1 aperture, main pipe linear pressure declines thereupon, knock out drum discharges wherein hydrogen and enters trunk pipeline, and slow down by hydrogen ductwork pressure rate of descent, the time keeping pressure to be not less than 1.7MPa reaches 20 minutes.This will race against time allows hydrogen supply device improve treating capacity, increase hydrogen output with guarantee hydrogen pipe net pressure maitamce, allows related personnel check and the eliminating hydrogen amount fault of uprushing simultaneously.
When significantly reducing suddenly by hydrogen pipe network hydrogen amount, reduce by hydrogen ductwork pressure control valve V1 aperture, the pressure of trunk pipeline increases, knock out drum stores rich hydrogen, slow down the pressure ramp-up rate of trunk pipeline, race against time and allow hydrogen supply device reduce treating capacity gradually, to reduce hydrogen output, allow related personnel search the reason using hydrogen amount anticlimax simultaneously.The hydrogen gas automatic blow down avoided or reduce in trunk pipeline, to fuel gas pipe network, reduces full factory material consumption energy consumption.
Above-described embodiment, be only the specific case further described object of the present invention, technological scheme and beneficial effect, the present invention is not defined in this.All make within scope of disclosure of the present invention any amendment, equivalent replacement, improvement etc., be all included within protection scope of the present invention.
Claims (9)
1. a pressure regulating system for hydrogen pipe network, hydrogen pipe host trunk pipeline is connected with multiple hydrogen supply device, connect simultaneously be made up of multiple hydrogenation plant use hydrogen pipe network, trunk pipeline also connects fuel gas pipe network, it is characterized in that:
Described trunk pipeline connects one or more knock out drum, each hydrogen supply device is furnished with a hydrogen supply pressure controlled valve, each hydrogen supply device connects trunk pipeline through its hydrogen supply pressure controlled valve respectively, each hydrogen supply device is furnished with the hydrogen supply pressure controller that connects its hydrogen output terminal, the control end of each hydrogen supply pressure controller connects the hydrogen supply pressure controlled valve of this hydrogen supply device, and each hydrogen supply pressure controller is positive interaction controller; Trunk pipeline uses hydrogen pipe network through connecting with hydrogen pressure control valve (V1), be connected to hydrogen pressure controller (T1) with hydrogen pipe network, connecting with hydrogen pressure control valve (V1) with the control end of hydrogen pressure controller (T1), is reverse acting controller with hydrogen pressure controller (T1); Trunk pipeline connects fuel gas pipe network through emptying to fuel gas pipe net control valve (V3), trunk pipeline is connected to emptying pressure controller (T3), a control end of emptying pressure controller (T3) connects emptying to fuel gas pipe net control valve (V3), and emptying pressure controller (T3) is positive interaction controller.
2. the pressure regulating system of hydrogen pipe network according to claim 1, is characterized in that:
Described trunk pipeline also connects torch pipe network through emptying to flare stack net control valve (V4), and another control end of emptying pressure controller (T3) connects emptying to flare stack net control valve (V4).
3. the pressure regulating system of hydrogen pipe network according to claim 1, is characterized in that:
The volume total amount of described one or more knock out drum is 300 ~ 500m
3.
4. the pressure regulating system of hydrogen pipe network according to claim 1, is characterized in that:
Described knock out drum Maximum operating pressure is equal to or greater than 2.4MPa, and design pressure is equal to or greater than 2.6MPa.
5. the pressure regulating system of hydrogen pipe network according to claim 1, is characterized in that:
The pressure set points scope of described hydrogen pressure controller (T1) is 1.90MPa ~ 1.95MPa;
The pressure set points scope of described hydrogen supply pressure controller (T2) is 2.25MPa ~ 2.30MPa;
The pressure set points scope of described emptying pressure controller (T3) is 2.30MPa ~ 2.35MPa.
6. the using method of the pressure regulating system of hydrogen pipe network according to any one of claim 1 to 5, is characterized in that:
Described each hydrogen supply device controls it by its hydrogen supply pressure controlled valve, and to send Hydrogen Vapor Pressure outside be 2.25MPa ~ 2.30MPa, the hydrogen of each hydrogen supply device enters into trunk pipeline through hydrogen supply pressure controlled valve, and give knock out drum pressurising, then process hydrogen pressure control valve (V1) enters and uses hydrogen pipe network; When certain hydrogen supply pressure controller measure pressure that this hydrogen supply device sends hydrogen outside exceed its setting value time, its hydrogen supply Stress control valve opening controlling to connect strengthens, when the pressure that this hydrogen supply device of mensuration sends hydrogen outside is less than its setting value, its hydrogen supply Stress control valve opening controlling to connect reduces.
7. the using method of the pressure regulating system of hydrogen pipe network according to claim 6, is characterized in that:
The Stress control of described hydrogen pipe network is in 1.90MPa ~ 1.95MPa, when exceeding its setting value with the pressure of hydrogen pressure controller (T1) mensuration hydrogen pipe network, its instruction uses hydrogen pressure control valve (V1) aperture to reduce, when the pressure of mensuration hydrogen pipe network is less than controller setting value, its instruction uses hydrogen pressure control valve (V1) aperture to strengthen.
8. the using method of the pressure regulating system of the hydrogen pipe network according to claim 6 or 7, is characterized in that:
The described trunk pipeline pressure rushing tank that eases up is identical, controls as 2.15MPa ~ 2.25MPa; When main pipe linear pressure has fuctuation within a narrow range, knock out drum release or storage of hydrogen maintain main pipe linear pressure and are stabilized in control range;
Dispatcher selects one as the hydrogen supply device regulating trunk pipeline Hydrogen Vapor Pressure in multiple hydrogen supply device, when the emptying pressure controller (T3) that trunk pipeline connects measures pressure lower than 2.1MPa, dispatcher improves this hydrogen supply device treating capacity, increases its hydrogen output, improves main pipe linear pressure; When the pressure that emptying pressure controller (T3) measures trunk pipeline exceedes its setting value, its instruction makes emptying strengthen to fuel gas pipe control valve (V3) aperture, and simultaneously dispatcher reduces and regulates the treating capacity of the hydrogen supply device of trunk pipeline Hydrogen Vapor Pressure, reduces its hydrogen output; When the pressure that emptying pressure controller (T3) measures trunk pipeline is less than its setting value, its instruction makes emptying be reduced to closedown to fuel gas pipe control valve (V3) aperture.
9. the using method of the pressure regulating system of hydrogen pipe network according to claim 8, is characterized in that:
Described trunk pipeline also connects torch pipe network through emptying to flare stack net control valve (V4), and another control end of emptying pressure controller (T3) connects emptying to flare stack net control valve (V4);
When the pressure that emptying to fuel gas pipe net control valve (V3) aperture reaches maximum, emptying pressure controller (T3) measures trunk pipeline still exceedes its setting value, emptying pressure controller (T3) instruction emptying strengthens to flare stack net control valve (V4) aperture, when the pressure measuring trunk pipeline is less than its setting value, emptying pressure controller (T3) first makes emptying be decreased to cut out to flare stack net control valve (V4) aperture.
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| CN107099340A (en) * | 2017-06-22 | 2017-08-29 | 山东京博石油化工有限公司 | The device of propylene and the method for removing propylene in dry gas in a kind of removal dry gas |
| CN108733098A (en) * | 2017-04-20 | 2018-11-02 | 北新集团建材股份有限公司 | A kind of control pressurer system and control method |
| CN110877895A (en) * | 2019-08-08 | 2020-03-13 | 中石化宁波工程有限公司 | Integrated process for hydrogen-making sulfur-tolerant shift methanation matched with coal in refinery plant |
| CN113339697A (en) * | 2021-06-07 | 2021-09-03 | 佛山绿色发展创新研究院 | Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column |
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| CN107099340A (en) * | 2017-06-22 | 2017-08-29 | 山东京博石油化工有限公司 | The device of propylene and the method for removing propylene in dry gas in a kind of removal dry gas |
| CN110877895A (en) * | 2019-08-08 | 2020-03-13 | 中石化宁波工程有限公司 | Integrated process for hydrogen-making sulfur-tolerant shift methanation matched with coal in refinery plant |
| CN110877895B (en) * | 2019-08-08 | 2023-03-14 | 中石化宁波工程有限公司 | Integrated process for hydrogen-making sulfur-tolerant shift methanation of coal matched with refinery |
| CN113339697A (en) * | 2021-06-07 | 2021-09-03 | 佛山绿色发展创新研究院 | Combined control method and system for discharging gas from high-pressure tube bundle vehicle to gas discharging column |
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Application publication date: 20151202 |