WO2010067185A1 - Unité de drainage à étanchéité autonome pour la séparation de fluides non miscibles de densités différentes - Google Patents

Unité de drainage à étanchéité autonome pour la séparation de fluides non miscibles de densités différentes Download PDF

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Publication number
WO2010067185A1
WO2010067185A1 PCT/IB2009/007709 IB2009007709W WO2010067185A1 WO 2010067185 A1 WO2010067185 A1 WO 2010067185A1 IB 2009007709 W IB2009007709 W IB 2009007709W WO 2010067185 A1 WO2010067185 A1 WO 2010067185A1
Authority
WO
WIPO (PCT)
Prior art keywords
self
sealing
drain unit
floats
unit
Prior art date
Application number
PCT/IB2009/007709
Other languages
English (en)
Spanish (es)
Inventor
Jorge Enrique Forero Sanabria
Javier Diaz Sierra
Jorge Enrique Veira Ibarra
Victor Julio Echeverria Restrepo
Original Assignee
Ecopetrol S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ecopetrol S.A. filed Critical Ecopetrol S.A.
Publication of WO2010067185A1 publication Critical patent/WO2010067185A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G06F11/1072—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in multilevel memories

Definitions

  • Light refined storage tanks such as gasoline, gasoline, diesel and medium crude, decant water that cannot be separated easily into production plants.
  • the manual visual method is used, which requires a person dedicated to visually verify when the phase changes from water to hydrocarbon.
  • the self-sealing drainage unit object of the present invention performs the separation of two immiscible liquids of different density, including water and hydrocarbons, requiring minimal human supervision of the hydrocarbon storage tanks and with greater efficiency, which reduces The loss of valuable liquid.
  • valves or self-sealing drainage units for the process of decanting liquids of different density.
  • valves or self-sealing drainage units for the process of decanting liquids of different density.
  • settling valves to drain a wide variety of liquids of different specific gravities, these valves are semi-automatic and generally, specific for a limited range of operating densities.
  • valves do not have an adequate response to the hydrodynamics of the drainage process, which causes a poor closure thereof and require high complexity in their operation when presenting a high number of mechanical elements.
  • the present application relates to a system for draining fluids of different specific gravity that requires low supervision by its operation, which presents lower losses of hydrocarbon by drag and has a low cost of manufacturing, installation, operation and maintenance.
  • U.S. patent application 5,918,622 discloses a valve for separating immiscible liquids of different specific gravity. This includes a container containing a liquid receiving chamber and a device in the lower part of said container for the exit of the liquid of greater specific gravity. In this valve, the float does not always perform the seal, due to the turbulence generated at the exit of the higher density fluid. Another limitation of this valve is that it has two pressure equilibrium points, which increases the possibility of failure in the operation.
  • the U.S. patent 5,935,427 refers to a system for draining liquid from a storage tank. Specifically, this invention relates to a system by which it is possible to remove liquids, generally in the aqueous phase, which precipitate to the bottom of the liquid product storage tanks.
  • This patent uses a sensor that controls two valves that are operated electrically and / or pneumatically. The unit reported in this document has a greater complexity in the installation and operation, since the calibration of the float system is difficult because the valve is inside a storage tank.
  • the Colombian patent 98-07453 whose invention consists of a portable applicator for delivering material capable of flowing from a container.
  • the system disclosed in this patent application does not apply to the operating conditions of the present application, especially since the valve described in said document is portable, not dedicated and requires actuation by the operator.
  • the invention contained in the application CO 97-69199 consists of a liquid supply system comprising a cylinder that has an inlet to receive the liquid, an outlet to dispense the liquid, a piston that is movably coupled to the cylinder to exert pressure on the liquid when said piston is actuated, and a compression spring connected to said piston and to the housing.
  • the equipment presented in the aforementioned document is not suitable for the separation conditions of liquids of different specific gravity because it basically consists of a mechanical level control system that only supplies a liquid from a full container.
  • the invention claimed in the present document consists of a container that defines a separation zone with three portions to separate a mixture comprising a heavier liquid and a lighter liquid. Said invention is not used for hydrocarbon-water separation conditions, but in alkylation processes. In addition, the alkylation processes separate sulfuric acid from light hydrocarbons, whose density difference is noticeable and is usually carried out in non-continuous processes.
  • Figure. 1 This figure corresponds to a view of a central section of the self-sealing unit of the present invention, showing all the internal and external elements that comprise it.
  • FIG. 2 This figure corresponds to several perspective views of the self-sealing unit of the present invention.
  • FIG. 3 This figure corresponds to the general location of the self-sealing unit of the present invention within the drainage process of the hydrocarbon storage tank.
  • the self-sealing drainage unit for separation of immiscible fluids of different density object of the present application is a useful equipment for the drainage of the separated water in the storage tanks of light and crude unrefined hydrocarbons, which is used to recover the heaviest of two immiscible liquids that has been decanted in a storage container.
  • the self-sealing unit of the present invention consists of the following parts: an outer cylinder (1), an inlet nozzle (2), an outlet nozzle (3), an upper seal (4a), a lower seal (4b), float guides (5a and 5b), an upper float (6a), a lower float (6b), a cover (8), a rod guide (9), a rod (10), a flow stabilizing grid ( 11), a vent or pressure regulator (12), drains (13a and 13b), a steering wheel of the rod (14), an upper flotation chamber (15a), a lower flotation chamber (15b), a regulating valve of the upper float (16a), a lower float regulator valve (16b) and a flow regulation chamber (17).
  • the floats (6a and 6b) of the invention can be solid or hollow.
  • said floats are hollow in order to allow the modification of their apparent densities, to adjust them by introducing inert materials through the regulating valves (16a and 16b), which modify the flotation properties according to the fluid system in which the self-sealing unit will operate. This allows the production of self-sealing units in series, the reduction of manufacturing costs and the adaptation of said unit to any fluid separation system.
  • valve of the present application comprises two floats to optimize the security in the seal and decrease the volume of hydrocarbon lost.
  • the configuration of the float guide (5a and 5b) allows the orientation of the floats (6a and 6b) to be directed towards the seals (4a and 4b), as will be described later.
  • the upper (4a) and lower (4b) seals are interchangeable and are made of soft metallic or polymeric materials.
  • the self-sealing drain unit for fluid separation operates based on the principle of buoyancy force given by the difference in the specific gravity of the float with the immiscible phases.
  • the heavy phase enters the flow regulation chamber (17) through the inlet nozzle (2), then the fluid passes through a flow stabilizing grid (11) and enters the upper flotation chamber (15a ), where the upper float (6a) is raised allowing the passage of fluid into the lower flotation chamber (15b) through the upper seal (4a).
  • the lower float (6b) is also raised, allowing the exit of the highest density liquid through the outlet nozzle (3).
  • the presence of two floats (6a and 6b) in the self-sealing unit reduces the risk of leaks because in case of failures in the first upper seal (4a), the lower float (6b) will act by closing the lower seal (4b), avoiding the passage of the light fluid to the collection tank of the first fluid. Additionally, the existence of these two floats allows to extend the range of effective operation of the self-sealing unit, using floats of different specific density, with which it is possible to control the small changes in density that a fluid experiences due to external factors, including changes in temperature and system pressure.
  • the self-sealing unit of the present invention has its main application in the drainage of the heavy phase of a storage system or tank.
  • the self-sealing valve of the invention can be used in typical two-phase systems, such as hydrocarbon-water, naphtha-water, diesel-water, light distillates-water and gasoline-aviation-water.
  • the application of the self-sealing drainage unit for separation should be avoided when high viscosity fluids are present, such as breasts or heavy crudes, when there is a high concentration of solids present in the mixture, when high temperatures occur intermittence or when the specific gravity of the two liquids is very close.
  • the self-sealing drain unit can be used for any separation operation within the limits of its capacity and available pressure.
  • the flow of the fluid through the inlet nozzle (2) to the self-sealing unit is allowed.
  • the air in the system is released through the vent valve (12) located in the lid (8).
  • the balancing valves connected to the drains (13a and 13b) are opened to equalize pressures on both sides of the floats (6a and 6b) and during the transit of fluid through the unit said valves are closed. This allows the floats (6a and 6b) to ascend in the heavy fluid.
  • the flow is allowed through the outlet nozzle (3) to the drain to allow the start of the discharge of the heavy phase.
  • the drainage period is maintained until the light phase enters the upper flotation chamber (15a), allowing the upper float (6a) to descend and make the first seal to restrict the flow through the unit.
  • the lower float (6b) maintains its open position while the sealing efficiency of the upper float (6a) is optimal.
  • the lower float (6b) will act by sealing the unit.
  • the inlet valve is closed and the system is unoccupied by the drains (13a and 13b). In the next drain shift, the procedure is repeated taking into account that all valves start in the closed position.
  • the self-sealing unit system has a cover (8) that allows quick and easy access for the maintenance of the internal elements of the equipment.
  • the placement of the lid (8) in the upper part of the self-sealing unit is versatile because it has a quick opening system defined by a rod (10), which has a guide (9) for its movement and a steering wheel ( 14) which allows to rotate the rod (10) in an easy, versatile and safe way, in order to have access to the interior of the self-sealing unit and to carry out the proper maintenance.
  • the installation of the self-sealing drainage unit must be carried out on the drainage line of the storage tank (20).
  • the dimensions of the inlet pipe must not be smaller than those of the entrance to the self-sealing drain unit, which has a diameter that is in the range of 10.16 a 15.24 centimeters (4 to 6 inches).
  • a blocking valve must be installed, with a hole diameter similar to that of the connection flange. Any section of pipe installed downstream of the self-sealing drain unit must be as short and straight as possible. Also, it is recommended to enable an alternate exit point to perform the normal drainage operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Float Valves (AREA)
  • Centrifugal Separators (AREA)

Abstract

La présente invention concerne une unité de drainage à étanchéité autonome pour la séparation de fluides non miscibles de différentes densités, notamment de l'eau et des hydrocarbures, qui nécessite une supervision humaine minimale des réservoirs de stockage d'hydrocarbure avec une efficacité meilleure, ce qui réduit la perte de liquide de valeur. L'unité de drainage se caractérise en ce qu'elle comprend un cylindre extérieur (1), une buse d'entrée (2), une buse de sortie (3), une étanchéité supérieure (4a), une étanchéité inférieure (4b), des guides de flotteurs (5a, 5b), un flotteur supérieur (6a), un flotteur inférieur (6b), un couvercle (8), des drains (13a, 13b), une chambre de flottaison supérieure (15a), une chambre de flottaison inférieure (15b) et une chambre de régulation de flux (17).
PCT/IB2009/007709 2008-12-12 2009-12-03 Unité de drainage à étanchéité autonome pour la séparation de fluides non miscibles de densités différentes WO2010067185A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CO08132118A CO6170067A1 (es) 2008-12-12 2008-12-12 Unidad de drenaje auto-sellante para separacion de fluidos inmiscibles de diferente densidad
CO08-132118 2008-12-12

Publications (1)

Publication Number Publication Date
WO2010067185A1 true WO2010067185A1 (fr) 2010-06-17

Family

ID=42242392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/007709 WO2010067185A1 (fr) 2008-12-12 2009-12-03 Unité de drainage à étanchéité autonome pour la séparation de fluides non miscibles de densités différentes

Country Status (2)

Country Link
CO (1) CO6170067A1 (fr)
WO (1) WO2010067185A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870810A (zh) * 2017-04-11 2017-06-20 无锡沪东麦斯特环境科技股份有限公司 一种内置式瞬间减压释放装置
CN108862469A (zh) * 2018-07-11 2018-11-23 刘国玺 一种生活污水油水分离器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007043042A2 (fr) * 2005-10-13 2007-04-19 Ramot At Tel-Aviv University Ltd. Procede de correction d'erreur dans une memoire flash mbc
WO2008067185A1 (fr) * 2006-11-27 2008-06-05 Sandisk Corporation Balayage de bits segmentés pour vérification de programmation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007043042A2 (fr) * 2005-10-13 2007-04-19 Ramot At Tel-Aviv University Ltd. Procede de correction d'erreur dans une memoire flash mbc
WO2008067185A1 (fr) * 2006-11-27 2008-06-05 Sandisk Corporation Balayage de bits segmentés pour vérification de programmation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870810A (zh) * 2017-04-11 2017-06-20 无锡沪东麦斯特环境科技股份有限公司 一种内置式瞬间减压释放装置
CN108862469A (zh) * 2018-07-11 2018-11-23 刘国玺 一种生活污水油水分离器

Also Published As

Publication number Publication date
CO6170067A1 (es) 2010-06-18

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