WO2021255304A1 - Sistema y procedimiento de extracción selectiva de hidrocarburos viscosos de tanques y otros recipientes - Google Patents
Sistema y procedimiento de extracción selectiva de hidrocarburos viscosos de tanques y otros recipientes Download PDFInfo
- Publication number
- WO2021255304A1 WO2021255304A1 PCT/ES2021/070396 ES2021070396W WO2021255304A1 WO 2021255304 A1 WO2021255304 A1 WO 2021255304A1 ES 2021070396 W ES2021070396 W ES 2021070396W WO 2021255304 A1 WO2021255304 A1 WO 2021255304A1
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- WO
- WIPO (PCT)
- Prior art keywords
- hydrocarbons
- tank
- steam
- container
- conduit
- Prior art date
Links
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 142
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 142
- 238000000605 extraction Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 63
- 239000007789 gas Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 239000002344 surface layer Substances 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims abstract description 13
- 238000009792 diffusion process Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 38
- 230000008569 process Effects 0.000 claims description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000004215 Carbon black (E152) Substances 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000008240 homogeneous mixture Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000000284 extract Substances 0.000 claims description 5
- 229920002994 synthetic fiber Polymers 0.000 claims description 4
- -1 hydro carbides Chemical class 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 33
- 239000010410 layer Substances 0.000 description 7
- 239000000295 fuel oil Substances 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
- B08B9/0933—Removing sludge or the like from tank bottoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/042—Breaking emulsions by changing the temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/04—Cleaning by suction, with or without auxiliary action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/035—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
- B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
- B08B2203/0229—Suction chambers for aspirating the sprayed liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/08—Details of machines or methods for cleaning containers, e.g. tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2230/00—Other cleaning aspects applicable to all B08B range
- B08B2230/01—Cleaning with steam
Definitions
- the present invention relates to a system and a process for the selective extraction of viscous hydrocarbons from storage tanks and other vessels, which must be emptied and cleaned regularly to carry out periodic inspections, repairs, load changes, demolitions, etc.
- the system and the method object of the invention are applicable to storage tanks and other containers containing viscous hydrocarbons existing in oil refineries, petrochemical plants, thermal power plants, port terminals, etc.
- Representative examples of applications of the invention are floating roof oil tanks and hydrocarbon process units, including distillation towers, reactors, air coolers, gaseous hydrocarbon "dimisteis" vessels, interconnecting pipes, and the like.
- US3874399A discloses a process for evacuating high viscosity hydrocarbons from a tank by recirculation to the tank of previously heated evacuated hydrocarbons, in order to reduce the viscosity of the tank contents and facilitate their evacuation.
- ES417373A1 describes a process for purging flammable residues from a container that comprises passing a gaseous stream containing water vapor and an inert gas such as nitrogen through the container, wherein the gaseous stream introduced into the container has a content of water vapor in the range between 4 and 50% by volume and transmits enough heat to the container to reach a temperature of at least 50 ° C.
- US5085242A discloses a method and apparatus for the elimination of waste from storage tanks by localized heating of the tank with either steam, water or electrical energy, causing a flow of the hydrocarbons towards the heating zone.
- GB2101475A describes a method for cleaning storage tanks by heating the sludge by putting it in contact with hot water (injection and recirculation of hot water), thus achieving a temperature of 70 ° C that allows the extraction of the residue thanks to the decrease in viscosity.
- ES2391183B1 discloses a procedure for the selective extraction of high-viscosity hydrocarbons using the following steps: application of risk preventive measures (for oil tanks with floating roof, a measure of the explosiveness inside the tank), heating of the tank contents by means of flexible coils slightly immersed in the hydrocarbons, and heating of the hydrocarbon surface layer by injecting hot air into the tank.
- risk preventive measures for oil tanks with floating roof, a measure of the explosiveness inside the tank
- heating of the tank contents by means of flexible coils slightly immersed in the hydrocarbons heating of the hydrocarbon surface layer by injecting hot air into the tank.
- ES2544575B1 discloses a procedure for the selective extraction of viscous hydrocarbons remaining in storage tanks.
- the operations it comprises are the following: measurement of the explosiveness inside the tank, heating of the hydrocarbons by means of devices located inside the tank and heating of the surface layer of hydrocarbons by injecting hot air.
- hot air is injected over the remaining hydrocarbons to facilitate their subsequent extraction.
- the utility model RU 25176U discloses a device for cleaning viscous oil tanks and sediments or deposits of petroleum products that It contains means for heating, liquefying, moving and mixing said tanks, including ejection means that comprise a hollow bar through which water vapor, gas or liquid circulates, located above the bottom of the tank and ejector heads to transport said water vapor, gas or liquid towards the surface of the tank.
- the process of the present invention differs from the aforementioned previous procedures by using in combination a steam ejector and a perimeter heating duct attached to the outer wall of the tank, which allow the hydrocarbons of the surface layer to be heated in a localized manner.
- the hydrocarbons adjacent to the entire length of the perimeter conduit in order to cause, with the double heating, the non-emulsified water to precipitate for its separate extraction from the hydrocarbons and to establish two selective hydrocarbon flows, one from the surface layer to the zone heated throughout the entire length of the perimeter conduit and the second from said zone heated by the perimeter conduit towards a suction device of a pump that selectively extracts the hydrocarbons.
- the two components that characterize the process object of the present invention, the steam ejector and the perimeter heating duct, are not used in any of the previous procedures and provide results that are not obtained with either of them or with their combinations. , since it is not possible to generate two selective hydrocarbon fluxes from the surface layer nor the precipitation and separate extraction of the non-emulsified water.
- the extraction of hydrocarbons is called “selective” because it meets two conditions: that the hydrocarbons are extracted separately from the non-emulsified water and that during the extraction the mixing of the hydrocarbons from the surface layer with the hydrocarbons closest to the bottom of the tank or container, which are usually be emulsified with water or contaminated by sludge and sediment.
- the extraction is in no case selective, as it occurs an unwanted flow towards the extraction zone of the most contaminated hydrocarbons from the bottom of the tank and the hydrocarbons are contaminated with water by the injected steam condensates or by recirculating hot water.
- the equipment that characterizes the system of the present invention is very simple and only requires the supply of water vapor for its operation. This advantage becomes even more obvious if it is taken into account that there is usually free availability of water flow in viscous hydrocarbon storage facilities.
- the four antecedent procedures of the same inventor referred to above require the use of a good number of electrical equipment: ATEX electric heaters, centrifugal fans, blowers, high-power generators, frequency inverters, electrical panels, etc.
- the steam ejector and the perimeter duct are very low-cost equipment that does not require maintenance due to the lack of mechanical or electrical components; Furthermore, the steam ejector alone performs multiple functions: suck gases from a point in the tank or container by Venturi effect, submit the sucked gases to a diffusion process turbulent with its steam engine and inject the resulting homogeneous mixture of hot gases at another point in the same tank or container.
- the process of the present invention allows a more effective selective extraction to be carried out.
- the significant reduction in viscosity that hydrocarbons experience with double heating heatating of the surface layer with the steam engine from the ejector and localized heating of the hydrocarbons adjacent to the entire length of the perimeter conduit) prevents unwanted flow to the pump from occurring. of the most polluted hydrocarbons close to the bottom of the tank, which, as they are not subjected to heating, remain viscous and practically static.
- the hydrocarbons flow more viscous towards the suction device of the pump and the unwanted flow of hydrocarbons from the bottom of the tank towards the suction device of the pump occurs to some extent, especially as the level of hydrocarbons in the tank decreases and at times of the year (winter in the northern hemisphere) when the hydrocarbons closest to the bottom of the tank have a higher temperature than those at the surface.
- the procedures most used in refineries to extract viscous hydrocarbons from oil tanks are based on dilution with crude oil or low-viscosity hydrocarbons supplied by the refineries themselves.
- the process of the present invention has important advantages over said processes, by allowing the extraction of the hydrocarbons without mixing them with the contaminants at the bottom of the tanks, avoiding dangerous leaks inherent in said procedures in tanks with leaky bottoms and detaching the layer. of hydrocarbons that contaminates the walls and the internal face of the floating roof of the tank as an added cleaning effect.
- applying the procedure object of the invention requires the use of much simpler equipment that greatly reduces costs. investment in equipment and costs of implementation.
- the most widespread procedures are pressure water cleaning and chemical cleaning, compared to which the present procedure has the advantages of being more effective and generating less waste. Presentation of the invention
- the present invention relates to a system and a process for the selective extraction of viscous hydrocarbons from storage tanks and other vessels.
- the extraction of hydrocarbons is called “selective” because it meets two conditions: that the hydrocarbons are extracted separately from the non-emulsified water and that during the extraction the mixing of the hydrocarbons of the surface layer with the hydrocarbons closest to the bottom of the water is avoided.
- tank or container which are those that are usually emulsified with water or contaminated by sludge and sediment.
- the system for the selective extraction of viscous hydrocarbons from a storage tank or a container is characterized by comprising in combination, according to a first embodiment, the following components:
- control means configured to regulate the quantity and temperature of the water vapor it supplies, the temperature being between 120 and 200 ° C (approximately between 2 and 15 bars);
- At least one steam ejector designed to heat a surface layer of the hydrocarbons to be extracted, with its engine steam nozzle connected to said boiler, so that a turbulent diffusion of the engine steam occurs in the steam ejector diffuser supplied by the boiler with the gases that the ejector sucks through its intake venturi effect, gases that come from the tank or container itself, from the atmosphere, from the steam boiler (water vapor to increase the temperature of the gases discharged by the ejector) or a combination of said sources, resulting in the discharge mouth of the ejector a homogeneous mixture of hot gases that the steam ejector itself injects into the tank or container through a gas discharge line to heat the surface layer of hydrocarbons, and
- At least one pump designed to selectively extract the hydrocarbons from the surface layer that heats the homogeneous mixture of hot gases injected by said steam ejector, a suction line of said pump being connected to the tank or container in a peripheral zone towards which the hydrocarbons of the surface layer heated with the gases injected by the steam ejector flow.
- the boiler contributes water vapor to the ejector gas suction conduit to increase the temperature of the gases that are injected into the tank or container, said water vapor must be depressurized so as not to compromise the good operation of the ejector and not cause risks due to overpressures.
- the system further comprises:
- At least one perimeter conduit for localized heating of the hydrocarbons externally attached to a section of the metal wall of the tank or container located below the level determined by the hydrocarbons to be extracted, a part of the perimeter conduit being constituted by the section of the metal wall of the tank or container to which it is attached, so that the hot gases that have circulated through said perimeter conduit are in direct contact with said section of metal wall and heat located adjacent hydrocarbons in the tank or container, heat transmission that is a function of the area of the metal wall in contact with the hot gases, the temperature of the gases that circulate through the perimeter conduit and the thermal conductivity of the wall metallic tank or container;
- At least one second pump designed to extract the precipitated water from the tank or container, suction pipes of said first and second pumps being connected to the tank or container in a peripheral zone close to the zone heated by the perimeter conduit, Y
- the invention additionally comprises:
- a first suction device that is connected to one end of said hydrocarbon suction line and has its suction mouth facing upwards, and a second suction device that is connected to the precipitated water suction line. and has its suction mouth oriented towards the bottom of the tank or container;
- a perimeter heating duct made up of a synthetic fabric cover supported by semicircular arches that are distributed along the entire duct, so that the perimeter duct acquires a semi-cylindrical shape with its flat section coinciding with the section of the metal wall of the tank or container to which it is attached and sealed by means of two straps, said semicircular arches having support plates at their two ends that are welded with rings to guide and hold the two straps that run through them, so that when the two straps are tensioned at their ends to two anchor points, they press and seal against the cylindrical wall of the tank or container the aforementioned support plates of all the arches and the upper and lower edges of the synthetic fabric throughout the entire length of the perimeter duct (by way of example, as a synthetic fabric, a roll of silicone fabric can be used that supports temperatures above 200 ° C and with approximate dimensions of 50 meters in length and 1 meter in width);
- a steam ejector with its discharge mouth connected by means of a gas conduit to a hot gas inlet mouth of the aforementioned perimeter duct, with its motor steam nozzle connected to the referred boiler and with its gas suction mouth Venturi sucking air from the atmosphere, so that the sucked air is homogeneously mixed with the motor steam and injected by the ejector itself into the hot gas inlet mouth of the perimeter duct;
- At least one centrifugal fan or a blower installed in the gas suction conduit of the steam ejector and configured to increase the flow of gases that are injected into the tank or container;
- a nitrogen tank connected to the gas suction line of the steam ejector that injects the gases into the tank or container to avoid the risk of fire or explosion in the case of hydrocarbons with a flash point below 55 ° C ( class B), having control means configured to regulate the amount of nitrogen supplied to the tank or container.
- the invention is applicable to the selective extraction of viscous hydrocarbons and other substances, being able to cite as a non-limiting example, asphalt emulsions, oily emulsions, oily sludge and soot, where the mentioned hydrocarbons and substances, when subjected to some gas circulation and heating conditions are capable of flowing towards a peripheral zone of the tank or container in which the pipes of at least one extraction pump are connected.
- the extraction is considered complete and the interior of the tank or container is inspected. If significant amounts of hydrocarbons remain in any area of the tank or container, the extraction will continue, conveniently choosing the installation points of the aforementioned equipment that define the system of this invention.
- water, oily sediments or hydrocarbons with a high melting temperature remain at the bottom of the tank or container, which are removed by conventional methods.
- it is remarkable that when applying the procedure it is possible to eliminate the hydrocarbon layer initially adhered to the walls and the internal face of the roof of the tank, which is released by the circulation of hot gases inside the tank or container. and especially by the heating and entrainment of the water vapor as it condenses on the hydrocarbon layer.
- the hot gases that have circulated through the perimeter heating duct are supplied by a steam ejector with its gas discharge mouth connected to a hot gas inlet mouth of the perimeter duct, with its motor steam nozzle connected to the aforementioned boiler and with its gas intake mouth sucking air from the atmosphere by Venturi effect, so that the aspirated air is homogeneously mixed with the motor steam and injected by the ejector itself into said gas inlet mouth of the perimeter conduit.
- the system and the method object of the invention are applicable to storage tanks and other containers containing viscous hydrocarbons existing in oil refineries, petrochemical plants, thermal power plants, port terminals, etc.
- Regarding the way of applying the invention to other containers it is practically the same as in the storage tanks, with the exception of having to adapt the installation of the equipment to its multiple configurations and sizes in each case.
- Examples of these latter applications are the process units of refineries and petrochemical plants, which include distillation towers, reactors, air coolers, containers with gaseous hydrocarbon “desistes”, interconnection pipes, etc.
- Both the system and the procedure can be applied to complete process units or separately to their components, conveniently choosing in both cases the gas suction and discharge points of one or more steam ejectors and the heating zones. localization of hydrocarbons, and injecting nitrogen as a measure to prevent fire and explosion risks.
- Figure 1 shows a floating roof oil tank -1- in whose manholes are installed some covers -2a- and -2b- that have connection fittings necessary to install the system and apply the procedure .
- a steam ejector -3- sucks gases from a point of the tank by Venturi effect through a gas suction line -3a- connected to the cover -2a- and, through a gas discharge line -3b- connected to the lid -2b-, injects them hot and homogeneously mixed with the motor steam supplied by a steam boiler -4- at a temperature between 120 and 200 ° C, the boiler having a valve -4a- to regulate the quantity of water vapor that supplies the ejector.
- a perimeter conduit -5- is installed attached to the outer metal wall of the tank to heat the oil adjacent to the entire length of the perimeter conduit.
- the perimeter duct is connected to a second steam ejector -6-, which sucks air from the atmosphere -6a- by Venturi effect and discharges it into the perimeter duct, through the duct discharge gas -6b-, homogeneously mixed with the motor steam supplied by the steam boiler -4-, which has a regulation valve -4b-
- a pump -7- selectively extracts the oil that heats the perimeter pipe through a suction pipe -7a-, and a second pump -8- extracts the precipitated water through a suction pipe -8a-
- the oil and the extracted water is pumped separately, through oil and water impulse lines -7b- and -8b-, to certain storage, transport or treatment points to be determined.
- the aforementioned suction pipes of the pumps are connected at their respective ends to devices for suction of oil -7c- and for suction of precipitated water -8c-, devices that are positioned inside the tank next to the area heated by the pipe. perimeter and that they are designed so that the oil suction device has its suction mouth facing upwards and the water suction device has its suction mouth facing the bottom of the tank and slightly separated from it.
- a nitrogen tank -9- has been planned which, By means of a control valve -9a-, it supplies a regulated quantity of nitrogen to the gas suction line of the ejector -3a- In this way, the flow of hot and homogenized gases that are injected into the tank has a high concentration of Nitrogen that helps to keep an oxygen concentration below 8% inside the tank at all times. Likewise, the injection of motor steam from the ejector also helps to keep the concentration of oxidizing oxygen in the tank below the 8% (the constituent oxygen in water vapor is not oxidizing).
- An example of the preferred application of the procedure is represented by the extraction of viscous hydrocarbons that accumulate at the bottom of oil floating roof tanks (class B hydrocarbons, with a flash point ⁇ 55 ° C).
- a nitrogen tank -9- fitted with a control valve -9a-, supplies a regulated quantity of nitrogen, so that an oxygen concentration is kept inside the tank at all times. below 8%;
- a steam ejector -3- Heating of a superficial layer of oil by means of a steam ejector -3- that sucks gases from a point of the tank itself above the level of the oil to be extracted and returns them homogeneously mixed with its motor steam and the amount of nitrogen that required to keep oxygen concentration below 8%.
- the amount of motor steam that is supplied to the ejector is regulated so that an amount of oil from the surface layer that is sufficient not to slow down the selective extraction of oil flows selectively towards an area adjacent to a perimeter heating duct -5- ;
- the extraction is considered complete and the interior of the tank is inspected. If significant amounts of oil remain in any area of the tank, the extraction will continue, suitably choosing the positioning points of the equipment. In large tanks, several positioning of the equipment can be carried out or two or more steam ejectors can be used simultaneously with their corresponding perimeter heating ducts and extraction pumps. At the end of the oil extraction, water, oily sediments or hydrocarbons with a high melting temperature always remain at the bottom of the tank, which are removed by conventional methods.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Extraction Or Liquid Replacement (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Cleaning In General (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Priority Applications (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21735998.3A EP4163023B1 (en) | 2020-06-03 | 2021-06-02 | System and method for the selective extraction of viscous hydrocarbons from tanks and other containers |
KR1020237000207A KR20230020506A (ko) | 2020-06-03 | 2021-06-02 | 탱크 및 다른 용기로부터 점성 탄화수소를 선택적으로 추출하기 위한 시스템 및 방법 |
PE2022002783A PE20230723A1 (es) | 2020-06-03 | 2021-06-02 | Sistema y procedimiento de extraccion selectiva de hidrocarburos viscosos de tanques y otros recipientes |
BR112022024696A BR112022024696A2 (pt) | 2020-06-03 | 2021-06-02 | Sistema e método para a extração seletiva de hidrocarbonetos viscosos de tanques e outros recipientes |
US18/007,783 US20230234111A1 (en) | 2020-06-03 | 2021-06-02 | System and method for the selective extraction of viscous hydrocarbons from tanks and other containers |
JP2022574554A JP2023533157A (ja) | 2020-06-03 | 2021-06-02 | タンク及び他の容器からの粘性炭化水素の選択的抽出のためのシステム及び方法 |
CN202180039921.7A CN115996798A (zh) | 2020-06-03 | 2021-06-02 | 用于从罐和其它容器中选择性提取粘性烃的系统和方法 |
IL298677A IL298677A (en) | 2020-06-03 | 2021-06-02 | A kit and method for the selective extraction of viscous hydrocarbons from a tank and other containers |
MX2022015056A MX2022015056A (es) | 2020-06-03 | 2021-06-02 | Sistema y procedimiento de extraccion selectiva de hidrocarburos viscosos de tanques y otros recipientes. |
SA522441578A SA522441578B1 (ar) | 2020-06-03 | 2022-12-01 | نظام وطريقة للاستخلاص الانتقائي للهيدروكربونات اللزجة من صهاريج وحاويات أخرى |
ZA2022/13893A ZA202213893B (en) | 2020-06-03 | 2022-12-21 | System and method for the selective extraction of viscous hydrocarbons from tanks and other containers |
CONC2022/0019135A CO2022019135A2 (es) | 2020-06-03 | 2022-12-28 | Sistema y procedimiento de extracción selectiva de hidrocarburos viscosos de tanques y otros recipientes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES202030521A ES2796092B2 (es) | 2020-06-03 | 2020-06-03 | Sistema y procedimiento de extraccion selectiva de hidro-carburos viscosos de tanques y otros recipientes |
ESP202030521 | 2020-06-03 |
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WO2021255304A1 true WO2021255304A1 (es) | 2021-12-23 |
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PCT/ES2021/070396 WO2021255304A1 (es) | 2020-06-03 | 2021-06-02 | Sistema y procedimiento de extracción selectiva de hidrocarburos viscosos de tanques y otros recipientes |
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US (1) | US20230234111A1 (es) |
EP (1) | EP4163023B1 (es) |
JP (1) | JP2023533157A (es) |
KR (1) | KR20230020506A (es) |
CN (1) | CN115996798A (es) |
BR (1) | BR112022024696A2 (es) |
CL (1) | CL2022003275A1 (es) |
CO (1) | CO2022019135A2 (es) |
ES (1) | ES2796092B2 (es) |
IL (1) | IL298677A (es) |
MX (1) | MX2022015056A (es) |
PE (1) | PE20230723A1 (es) |
SA (1) | SA522441578B1 (es) |
WO (1) | WO2021255304A1 (es) |
ZA (1) | ZA202213893B (es) |
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WO2012094562A1 (en) * | 2011-01-06 | 2012-07-12 | Jan Pavlicek | Method and system for dissolving crystals in shipping vessels |
ES2391183B1 (es) | 2011-04-28 | 2013-08-01 | Evaristo Fontecha Cuetos | Procedimiento para la extracción selectiva de hidrocarburos de alta viscosidad remanentes en fondos de tanques de almacenamiento. |
ES2544575B1 (es) | 2014-01-24 | 2016-06-29 | Evaristo Fontecha Cuetos | Procedimiento de extracción selectiva de hidrocarburos viscosos remanentes en tanques de almacenamiento |
WO2017118766A1 (es) | 2016-01-07 | 2017-07-13 | Evaristo Fontecha Cuetos | Procedimiento de extracción de hidrocarburos viscosos remanentes en tanques y tuberías |
WO2019197690A1 (es) | 2018-04-12 | 2019-10-17 | Evaristo Fontecha Cuetos | Procedimiento de extracción de hidrocarburos viscosos de tanques de almacenamiento y de equipos de proceso |
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-
2020
- 2020-06-03 ES ES202030521A patent/ES2796092B2/es not_active Expired - Fee Related
-
2021
- 2021-06-02 US US18/007,783 patent/US20230234111A1/en active Pending
- 2021-06-02 CN CN202180039921.7A patent/CN115996798A/zh active Pending
- 2021-06-02 KR KR1020237000207A patent/KR20230020506A/ko active Search and Examination
- 2021-06-02 EP EP21735998.3A patent/EP4163023B1/en active Active
- 2021-06-02 BR BR112022024696A patent/BR112022024696A2/pt unknown
- 2021-06-02 MX MX2022015056A patent/MX2022015056A/es unknown
- 2021-06-02 PE PE2022002783A patent/PE20230723A1/es unknown
- 2021-06-02 IL IL298677A patent/IL298677A/en unknown
- 2021-06-02 WO PCT/ES2021/070396 patent/WO2021255304A1/es active Application Filing
- 2021-06-02 JP JP2022574554A patent/JP2023533157A/ja active Pending
-
2022
- 2022-11-21 CL CL2022003275A patent/CL2022003275A1/es unknown
- 2022-12-01 SA SA522441578A patent/SA522441578B1/ar unknown
- 2022-12-21 ZA ZA2022/13893A patent/ZA202213893B/en unknown
- 2022-12-28 CO CONC2022/0019135A patent/CO2022019135A2/es unknown
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US3874399A (en) | 1972-07-03 | 1975-04-01 | Fuji Oil Co Ltd | Delivery system for high melting point oils in a tank |
ES417373A1 (es) | 1972-07-31 | 1976-03-01 | British Oxygen Co Ltd | Un procedimiento para purgar residuos inflamables desde un recipiente. |
GB2101475A (en) | 1981-07-15 | 1983-01-19 | British Petroleum Co Plc | Method for cleaning storage tanks |
US5041165A (en) * | 1984-10-02 | 1991-08-20 | Urbani William G | Dirty surface cleaning method |
US5085242A (en) | 1989-02-01 | 1992-02-04 | Great Eastern (Bermuda) Ltd. | Method and apparatus for the removal of black oil residues from tanks |
RU25176U1 (ru) | 2002-06-20 | 2002-09-20 | Чушкина Зоя Юрьевна | Устройство для очистки резервуаров от вязких нефтяных отложений и вязких отложений нефтепродуктов |
WO2012094562A1 (en) * | 2011-01-06 | 2012-07-12 | Jan Pavlicek | Method and system for dissolving crystals in shipping vessels |
ES2391183B1 (es) | 2011-04-28 | 2013-08-01 | Evaristo Fontecha Cuetos | Procedimiento para la extracción selectiva de hidrocarburos de alta viscosidad remanentes en fondos de tanques de almacenamiento. |
ES2544575B1 (es) | 2014-01-24 | 2016-06-29 | Evaristo Fontecha Cuetos | Procedimiento de extracción selectiva de hidrocarburos viscosos remanentes en tanques de almacenamiento |
WO2017118766A1 (es) | 2016-01-07 | 2017-07-13 | Evaristo Fontecha Cuetos | Procedimiento de extracción de hidrocarburos viscosos remanentes en tanques y tuberías |
WO2019197690A1 (es) | 2018-04-12 | 2019-10-17 | Evaristo Fontecha Cuetos | Procedimiento de extracción de hidrocarburos viscosos de tanques de almacenamiento y de equipos de proceso |
Also Published As
Publication number | Publication date |
---|---|
US20230234111A1 (en) | 2023-07-27 |
EP4163023A1 (en) | 2023-04-12 |
IL298677A (en) | 2023-01-01 |
JP2023533157A (ja) | 2023-08-02 |
EP4163023B1 (en) | 2024-07-31 |
KR20230020506A (ko) | 2023-02-10 |
CN115996798A (zh) | 2023-04-21 |
SA522441578B1 (ar) | 2024-07-06 |
ES2796092B2 (es) | 2021-07-05 |
BR112022024696A2 (pt) | 2023-02-28 |
PE20230723A1 (es) | 2023-04-26 |
ES2796092A1 (es) | 2020-11-25 |
EP4163023C0 (en) | 2024-07-31 |
MX2022015056A (es) | 2023-01-24 |
CO2022019135A2 (es) | 2023-03-07 |
CL2022003275A1 (es) | 2023-07-07 |
ZA202213893B (en) | 2023-10-25 |
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