EP1446607A1 - Gas delivery system - Google Patents
Gas delivery systemInfo
- Publication number
- EP1446607A1 EP1446607A1 EP02779529A EP02779529A EP1446607A1 EP 1446607 A1 EP1446607 A1 EP 1446607A1 EP 02779529 A EP02779529 A EP 02779529A EP 02779529 A EP02779529 A EP 02779529A EP 1446607 A1 EP1446607 A1 EP 1446607A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- delivery
- valve
- pressure
- line
- venting
- Prior art date
- 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.)
- Granted
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
- F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0326—Valves electrically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0332—Safety valves or pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0335—Check-valves or non-return valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/011—Oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/013—Carbone dioxide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
- F17C2250/0434—Pressure difference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/05—Applications for industrial use
Definitions
- the present invention is related to a system to deliver a fluid from a delivery tank to a storage tank, with a delivery line connectable to said delivery tank and to said storage tank. Further the invention is directed to a method to deliver a fluid from a delivery tank to a storage tank through a delivery line connected to said delivery tank and to said storage tank.
- Carbon dioxide is used for many different applications, some of them being more sensitive to impurities and quality than the others. For instance, carbon dioxide used in the food industry has a higher quality demand than in welding or industrial blanketing applications.
- Carbon dioxide is normally obtained on a large scale basis when recovering waste carbon dioxide from an industrial production facility or from natural sources in the ground.
- the design of the quality in these plants is normally as good to be able to cover all applications.
- impurities may be introduced during the distribution of the carbon dioxide, caused by back flow from customer storage tanks into the delivery tanks of the distribution vehicles.
- a system to deliver a fluid from a delivery tank to a storage tank, with a delivery line connectable to said delivery tank and to said storage tank which, according to the invention, comprises a delivery valve in said delivery line, means to detect the pressure difference between the pressure at a point upstream said delivery valve and a point downstream said delivery valve, whereby said delivery valve is operable to open a flow path in said delivery line depending on the detected pressure difference.
- fluid means any kind of gaseous or liquid material and mixtures thereof.
- the expression “fluid” includes gases, as for example oxygen, nitrogen and carbon dioxide, further liquids, in particular liquified gases, and gas-liquid- mixtures, especially a two-phase flow of a substance in its gaseous and its liquid state.
- upstream and downstream are based on the regular flow of fluid from said delivery tank to said storage tank.
- the invention discloses a system and a method to be able to use a higher grade fluid to distribute into a lower grade application where impurities may be added to the fluid. The risk that back flow from the storage tank may cause impurities to be added into the delivery tank is avoided.
- the delivery valve is only opened if the pressure in the delivery line upstream the delivery valve exceeds the pressure downstream the delivery valve.
- a pressure gradient assures that there is no flow of fluid, that may be contaminated, back to the delivery tank. If the pressure in the storage tank is higher than the pressure in the delivery tank, said delivery valve will remain closed.
- the delivery check valve has preferably a low opening pressure of less than 1 bar, more preferred less than 0,1 bar and most preferred close to 0 bar.
- opening pressure of a check valve means the minimum pressure difference between upstream and downstream the check valve which causes the check valve to open. That means in this particular case that as soon as the pressure in the delivery line downstream the delivery valve reaches the pressure in the storage tank, the fluid will start flowing through the delivery check valve into said storage tank.
- bypass conduit between the inlet and the outlet of the delivery valve, said bypass conduit comprising a check valve.
- the bypass conduit allows fluid to flow in the direction to the storage tank to avoid any undesired pressure rise in the delivery line upstream the delivery valve. It thus works as a safety valve.
- the bypass check valve prevents any flow of fluid in the wrong direction.
- bypass restriction should be small enough to allow for pressure buildup upstream the delivery valve. Namely, if the bypass restriction is too big, there will be an important flow through the bypass and pressure conditions, which cause the delivery valve to open, might never occur.
- the safety relief valve allows pressure upstream said delivery valve to build above the pressure in the storage tank when said delivery line is connected to said storage tank and to said delivery tank.
- the safety relief valve is preferably vented to the atmosphere.
- the system further comprises a venting line with a venting valve connected to said delivery line downstream said delivery valve, said venting valve operable depending on the detected pressure difference.
- the venting line with the venting valve eliminates the risk of back-flow that may arise if the delivery valve, the delivery check valve and / or the check valve in the bypass conduit do not function properly. In such a case the back-flow of contaminated fluid to the delivery tank is prevented by venting the fluid through said venting valve and venting line.
- venting valve and / or said delivery valve are solenoid valves. In this case the status of these valves can be easily controlled depending on the detected pressure difference.
- switch means that allow to actuate the delivery valve and / or the venting valve and / or the means to detect the pressure difference. That switch can be used to open and close these valves or to switch off the pressure detecting means.
- the flow path through the delivery line is only open when said switch is switched on and when the difference between the pressure upstream and the pressure downstream the delivery valve is positive. It thus takes two conditions to be fulfilled at the same time to open the flow path and to make a delivery of fluid possible. Thus the risk that any contaminated fluid flows the wrong way into the delivery tank is further reduced.
- the means to detect the pressure difference are switched off. In this case the output of said means to detect the pressure difference does not cause said delivery valve to open.
- the means to detect the pressure difference preferably comprise a differential pressure transmitter which is in fluid communication, for example via sensor tubes, with both a point upstream and a point downstream said delivery valve, for example with the delivery line upstream the delivery valve and the storage tank.
- the output of the differential pressure transmitter switches between two levels depending on which of the detected pressures is the higher one.
- the output of the means to detect the pressure difference is proportional to the pressure difference itself. The higher the output signal, the higher is the pressure difference. Thus, it is for example possible to actuate the delivery valve only if a predetermined pressure difference is exceeded.
- pressure detecting means that detect the absolute pressure at a point downstream said delivery valve, for example in said storage tank, and the absolute pressure in said delivery line upstream said delivery valve. In this case it is not only possible to determine the pressure difference but also the absolute values. The risk of back flow of fluid to the delivery tank is further decreased, since it is possible to open the delivery valve only if both the pressure difference and the absolute pressure in the delivery line exceed predetermined values.
- the pressure detecting means may be a single instrument which is in fluid communication with the storage tank and the delivery line or may comprise two separate pressure detectors. In the later case the output signals of these pressure detectors are then further processed to determine which of the detected pressures is the higher one or to obtain the absolute value of the pressure difference.
- the invention further comprises an additional venting line with an additional venting valve connected to said delivery line upstream said delivery valve. This feature allows to vent the delivery line upstream the delivery valve to assure that no contaminated fluid has accumulated.
- the invention is of particular importance in the supply of liquid or liquified gases to storage tanks, especially of liquid carbon dioxide.
- carbon dioxide is used in different qualities, for example high grade carbon dioxide in the food and beverage industry and low grade carbon dioxide in inerting processes or in heat treatment applications.
- the invention allows to first deliver liquid gas to a customer with a lower grade carbon dioxide application and then supply a second customer with high grade carbon dioxide from the same delivery tank.
- a preferred application of the invention is the supply of liquid carbon dioxide to dry-cleaning installations.
- An advantage of the invention is that it is possible to have only one tank to store fresh and recovered fluid instead of a storage tank and a separate recovery tank.
- a dry-cleaning facility is normally provided with a storage tank for fresh carbon dioxide and a recovery tank for recovered carbon dioxide from the dry-cleaning process.
- the invention allows to store fresh and recovered carbon dioxide in the same tank.
- Figure 1 shows a system according to the invention to supply liquid carbon dioxide to a dry-cleaning facility.
- Figure 2 shows an alternative embodiment of the inventive system.
- a mixture of liquid carbon dioxide and additives as detergents, surfactants or fragrances is used to clean for example workpieces, textiles or garments.
- the carbon dioxide solvent and the additives can be premixed and then shipped to the dry-cleaning facility or the dry-cleaning mixture can be prepared on site. The latter is especially advantageous when the carbon dioxide is reused after cleaning.
- Figure 1 shows a system to be able to use a higher grade carbon dioxide, for example food grade carbon dioxide, to distribute into the storage tank 1 of a dry-cleaning facility where impurities may be added to the carbon dioxide avoiding risk that back flow from the storage tank 1 may cause impurities to be added into the delivery tank 2 of the distribution vehicle.
- the delivery hose 3 of the delivery tank 2 is connected to the delivery line 5 of the dry- cleaning facility.
- the delivery hose 3 and the delivery line 5 have spring loaded devices 4 at their respective ends which are closed when not connected and open when connected. Of course, instead of spring loaded devices 4 any other suitable types of connection can be used.
- the delivery line 5 comprises a delivery valve 6 which is operable to open or close the flow path from the delivery tank 2 to the storage tank 1.
- a check valve 7 Downstream said delivery valve 6 a check valve 7 is provided which allows carbon dioxide to flow only in the direction to the storage tank 1.
- a bypass conduit parallel to the delivery valve 6 comprises another check valve 8 and a throttle 9.
- Downstream the delivery valve 6 a venting line 10 with a venting valve 11 is branching.
- Downstream venting valve 11 a relief valve 19 is provided.
- the opening pressure of relief valve 19 is set to about 5 to 6 bar, that is to about triple point pressure or slightly above triple point pressure.
- relief valve 19 is provided downstream venting valve 11 to avoid trapped liquid.
- venting valve 11 may have an opening pressure greater than zero, thus working as a combined venting and relief valve.
- Another venting tube 14 with a venting valve 15 is connected to the delivery line 5 upstream the delivery valve 6.
- Check valve 8 and relief valve 19 are spring loaded with an opening pressure of about the triple point pressure of carbon dioxide. The opening pressure of delivery check valve 7 is close to zero.
- a differential pressure transmitter 12 is connected to the delivery line 5 upstream the delivery valve 6.
- the differential pressure transmitter 12 further reads the pressure in the storage tank 1 via a sensor tube 13.
- the ports of the pressure transmitter 12, which are connected to the delivery line 5 and the storage tank 1, respectively, do not allow a fluid flow between each other. A contamination of the delivery tank 2 via a gas flow through the pressure transmitter 12 is thus prevented.
- the operation of delivery valve 6 as well as venting valve 11 depends on the output of the differential pressure transmitter 12 and is controlled by means receiving the output signal from the differential pressure transmitter 12.
- Such means that receive the output signal from the differential pressure transmitter 12 and that control valves 6 and 11 are preferably a control unit comprising a programmable logical controller and an electrical relay.
- Delivery valve 6 and venting valve 11 are also in communication with switch means 16 which control the function of delivery valve 6 and venting valve 11.
- Delivery valve 6 is a normally closed valve which will only open when said switch means 16 are switched to the ON status and the output of the pressure transmitter 12 shows that the correct pressure conditions are fulfilled.
- venting valve 11 is a normally open valve which will only close when both above mentioned conditions are fulfilled.
- Figure 2 shows an alternative embodiment of the inventive system.
- same reference numbers refer to same details.
- the system according to figure 2 differs from the system of figure 1 in the feature that instead of bypass 8, 9 an additional safety line 17 with a safety relief valve 18 is provided.
- the set pressure of safety relief valve 18 is in this case set between 20 and 40 bar, preferably about 30 bars. But a man skilled in the art will adapt the set pressure to the situation, for example depending on the delivery pressure and the storage pressure.
- the pressure in delivery line 5 upstream delivery valve 6 is less than the pressure in the storage tank 1 , if venting line 15 has been used to vent delivery line 5 upstream delivery valve 6.
- the switch means 16 are in the OFF position, causing delivery valve 6 and venting valve 11 to be in their normal status, that is causing delivery valve 6 to remain closed and venting valve 11 to remain open.
- any liquid carbon dioxide left in the delivery line 5 between spring load device 4 and delivery valve 6 will evaporate and cause a pressure increase in that part of delivery line 5 upstream delivery valve 6.
- safety valve 18 will open and gaseous carbon dioxide will flow into venting line 10 and further on to the atmosphere.
- the opening pressure of bypass check valve 8 is set to a value between 5 and 6 bar, preferably about 5,2 bar.
- the set pressure of safety valve 18 in the embodiment of figure 2 is set to about 30 bars. Therefore, in both cases it is assured that the pressure in delivery line 5 upstream delivery valve 6 after the pressurization is above the triple point of carbon dioxide. Thus when liquid carbon dioxide is delivered from the delivery tank 2 into delivery line 5, formation of carbon dioxide dry ice and snow is prevented.
- venting valve 15 is opened for a few seconds to make sure that no contaminated carbon dioxide has accumulated in this part of the delivery line 5. Then delivery hose 3 is connected to delivery line 5 and delivery line 5 upstream delivery valve 6 is pressurized with gaseous carbon dioxide from the delivery tank 2.
- the method to first deliver only gaseous carbon dioxide has the advantage that delivery line 5 downstream delivery valve 6 will be pressurized by that gas as soon as delivery valve 6 has been opened, even if for any reason bypass 8 is blocked or if bypass 8 does not exist at all. In this way, ice formation is avoided downstream delivery valve 6.
- switch means 16 are flipped in the ON position.
- the pressure in the delivery line 5 increases to a value which exceeds the pressure inside storage tank 1. Due to these pressure conditions differential pressure transmitter 12 provides a signal which causes venting valve 11 to switch to the closed state.
- venting valve 11 It is advantageous to wait for 1 to 5 seconds, preferably about 2 seconds, before venting valve 11 is closed to make sure that the positive pressure difference between the pressure in the delivery line 5 and the storage tank 1 was not only an accidental pressure peak.
- delivery valve 6 After a certain time delay delivery valve 6 is opened. It has been found that this time delay should be at least 5 seconds, preferably more than 10 seconds. Closing venting valve 11 five seconds before opening delivery valve 6 avoids losses of carbon dioxide through venting valve 11 once the delivery starts.
- the time delay further assures pressurization of the delivery line 5 downstream delivery valve 6 by carbon dioxide gas, prior to liquid carbon dioxide entering delivery line 5 downstream delivery valve 6.
- a pressurized storage tank 1 and closed venting valve 11 make sure that pressure is built up in delivery line 5 downstream delivery valve 6.
- Relief valve 19 has an opening pressure of about the triple point pressure of carbon dioxide. Between two subsequent deliveries, when delivery valve 6 is closed and venting valve 11 is open, pressure in delivery line 5 downstream delivery valve 6 does not decrease below the opening pressure of relief valve 19. Therefore, it is always guaranteed that there will be no formation of ice when liquid carbon dioxide enters delivery line 5 downstream delivery valve 6.
- bypass check valve 8 which is provided parallel to the delivery valve 6. Any gas remaining in the delivery line 5 will flow via bypass 8, 9 into the storage tank 1. So under normal conditions in the delivery line 5 pressure will always be less than the pressure in the delivery tank 2.
- check valve 8 fails or as it is the case in the embodiment according to figure 2 if bypass 8 does not exist at all, remaining gas in delivery line 5 cannot flow to the storage tank 1 and the pressure in the delivery line 5 might increase to a value which at the moment of connection causes gas to flow back to the delivery tank 2.
- venting valve 15 is opened before the delivery hose 3 is connected to the delivery line 5. By venting of the delivery line 5 prior to connecting the delivery hose 3, there is no excess pressure in delivery line 5.
- the pressure in the delivery tank 2 and thus the pressure in delivery line 5 might break down.
- the differential pressure monitoring means 12 will note that break down. If the correct pressure conditions are not fulfilled, the flow path between the delivery tank 2 and the storage tank 1 will automatically be closed and the delivery will be stopped. It is further advantageous to provide in such a situation signal means that inform, e.g. by optical or acoustical signals, that a delivery failure has occurred.
- relief valve 19 is provided in venting line 10.
- the set pressure of relief valve 19 is about the triple point pressure of carbon dioxide.
- the pressure in delivery line 5 downstream delivery valve 6 will never decrease below the triple point pressure of carbon dioxide.
- opening delivery valve 6 liquid carbon dioxide enters delivery line 5 with a pressure above triple point pressure of carbon dioxide and therefore there is no risk of ice formation.
- the invention is not only useful in the delivery of carbon dioxide to a dry-cleaning facility as described above. There are also big advantages in other processes where gas is used and recovered. Further the invention is not limited to carbon dioxide, but also advantageous in supplying other fluids, in particular liquified gases, e.g. liquid nitrogen, to storage tanks. It is obvious for a man skilled in the art that in such cases the opening and set pressures of the check and relief valves used in the inventive system are adapted to the changed conditions.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pipeline Systems (AREA)
- Gas Separation By Absorption (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Glass Compositions (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02779529A EP1446607B1 (en) | 2001-11-19 | 2002-11-05 | Gas delivery system |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01127588A EP1312854A1 (en) | 2001-11-19 | 2001-11-19 | Gas delivery system |
EP01127588 | 2001-11-19 | ||
PCT/EP2002/012349 WO2003044425A1 (en) | 2001-11-19 | 2002-11-05 | Gas delivery system |
EP02779529A EP1446607B1 (en) | 2001-11-19 | 2002-11-05 | Gas delivery system |
Publications (2)
Publication Number | Publication Date |
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EP1446607A1 true EP1446607A1 (en) | 2004-08-18 |
EP1446607B1 EP1446607B1 (en) | 2005-03-02 |
Family
ID=8179289
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01127588A Withdrawn EP1312854A1 (en) | 2001-11-19 | 2001-11-19 | Gas delivery system |
EP02779529A Expired - Lifetime EP1446607B1 (en) | 2001-11-19 | 2002-11-05 | Gas delivery system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01127588A Withdrawn EP1312854A1 (en) | 2001-11-19 | 2001-11-19 | Gas delivery system |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP1312854A1 (en) |
AT (1) | ATE290188T1 (en) |
AU (1) | AU2002342882A1 (en) |
DE (1) | DE60203138T2 (en) |
WO (1) | WO2003044425A1 (en) |
Cited By (9)
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US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US9657946B2 (en) | 2012-09-15 | 2017-05-23 | Honeywell International Inc. | Burner control system |
US9683674B2 (en) | 2013-10-29 | 2017-06-20 | Honeywell Technologies Sarl | Regulating device |
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
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US9557059B2 (en) | 2011-12-15 | 2017-01-31 | Honeywell International Inc | Gas valve with communication link |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
DE102016215323A1 (en) * | 2016-08-17 | 2018-02-22 | Bayerische Motoren Werke Aktiengesellschaft | Method for operating a valve of a pressure vessel system and pressure vessel system |
US10564062B2 (en) | 2016-10-19 | 2020-02-18 | Honeywell International Inc. | Human-machine interface for gas valve |
US11073281B2 (en) | 2017-12-29 | 2021-07-27 | Honeywell International Inc. | Closed-loop programming and control of a combustion appliance |
US10697815B2 (en) | 2018-06-09 | 2020-06-30 | Honeywell International Inc. | System and methods for mitigating condensation in a sensor module |
CN108870065B (en) * | 2018-08-28 | 2024-03-12 | 江门市江海区吉安顺化工有限公司 | Liquid ammonia fills dress production line |
JP2024009523A (en) * | 2022-07-11 | 2024-01-23 | 三菱造船株式会社 | Tank system and transfer method of liquefied carbon dioxide |
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US4887857A (en) * | 1986-07-22 | 1989-12-19 | Air Products And Chemicals, Inc. | Method and system for filling cryogenic liquid containers |
US5628349A (en) * | 1995-01-25 | 1997-05-13 | Pinnacle Cng Systems, Llc | System and method for dispensing pressurized gas |
US5865206A (en) * | 1997-05-09 | 1999-02-02 | Praxair Technology, Inc. | Process and apparatus for backing-up or supplementing a gas supply system |
US6216302B1 (en) * | 1997-11-26 | 2001-04-17 | Mve, Inc. | Carbon dioxide dry cleaning system |
DE19915779B4 (en) * | 1999-04-08 | 2007-10-31 | Air Liquide Deutschland Gmbh | Filling level for the production of precision gas mixtures |
JP2001295994A (en) * | 2000-04-11 | 2001-10-26 | Air Liquide Japan Ltd | Compressed gas transfer filling method |
-
2001
- 2001-11-19 EP EP01127588A patent/EP1312854A1/en not_active Withdrawn
-
2002
- 2002-11-05 WO PCT/EP2002/012349 patent/WO2003044425A1/en not_active Application Discontinuation
- 2002-11-05 DE DE60203138T patent/DE60203138T2/en not_active Expired - Lifetime
- 2002-11-05 AT AT02779529T patent/ATE290188T1/en not_active IP Right Cessation
- 2002-11-05 AU AU2002342882A patent/AU2002342882A1/en not_active Abandoned
- 2002-11-05 EP EP02779529A patent/EP1446607B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
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See references of WO03044425A1 * |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US9657946B2 (en) | 2012-09-15 | 2017-05-23 | Honeywell International Inc. | Burner control system |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US11421875B2 (en) | 2012-09-15 | 2022-08-23 | Honeywell International Inc. | Burner control system |
US9683674B2 (en) | 2013-10-29 | 2017-06-20 | Honeywell Technologies Sarl | Regulating device |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
Also Published As
Publication number | Publication date |
---|---|
EP1446607B1 (en) | 2005-03-02 |
EP1312854A1 (en) | 2003-05-21 |
AU2002342882A1 (en) | 2003-06-10 |
ATE290188T1 (en) | 2005-03-15 |
DE60203138D1 (en) | 2005-04-07 |
WO2003044425A1 (en) | 2003-05-30 |
DE60203138T2 (en) | 2006-04-06 |
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