WO2014046572A2 - Procédé et dispositif de conversion thermique en phase liquide d'une charge d'hydrocarbure lourde - Google Patents

Procédé et dispositif de conversion thermique en phase liquide d'une charge d'hydrocarbure lourde Download PDF

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Publication number
WO2014046572A2
WO2014046572A2 PCT/RU2013/000816 RU2013000816W WO2014046572A2 WO 2014046572 A2 WO2014046572 A2 WO 2014046572A2 RU 2013000816 W RU2013000816 W RU 2013000816W WO 2014046572 A2 WO2014046572 A2 WO 2014046572A2
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WO
WIPO (PCT)
Prior art keywords
reactor
liquid product
liquid
phase
heavy hydrocarbon
Prior art date
Application number
PCT/RU2013/000816
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English (en)
Russian (ru)
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WO2014046572A3 (fr
Inventor
Андрей Владиславович КУРОЧКИН
Original Assignee
Kurochkin Andrei Vladislavovich
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Application filed by Kurochkin Andrei Vladislavovich filed Critical Kurochkin Andrei Vladislavovich
Publication of WO2014046572A2 publication Critical patent/WO2014046572A2/fr
Publication of WO2014046572A3 publication Critical patent/WO2014046572A3/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils

Definitions

  • the invention relates to methods and devices for liquid-phase thermal conversion (thermal cracking, visbreaking, sintering, thermal condensation) of heavy hydrocarbons, prone to the formation of coke deposits on the surface of the equipment, and can find application in the oil refining industry.
  • a known method of visbreaking oil residues [US Pat. RF N ° 2339675, C10G9 / 00, publ. August 21, 2007], including heating the feed to 450-490 ° C in the furnace coil, feeding heated feed to the reaction chamber, withdrawing visbreaking products into the fractionation column to obtain distillate, gas oil fractions and residue, and a pressure reducing valve is installed after the reaction chamber.
  • the reactor has a large number of internal elements, is cumbersome, difficult to manufacture and maintain, in addition, the design of the reactor does not include devices that prevent the entrainment of gaseous liquid droplets formed due to high turbulence and disorganized movement of the reaction medium in the reactor.
  • the disadvantage of this method is the low velocity of the liquid phase along the walls of the reactor, which leads to the deposition of coke on surfaces located below the separation zone of the reactor.
  • a significant amount of heat is absorbed and the temperature of the reaction mixture decreases vertically from top to bottom of the reactor, which slows down the process of thermal cracking in the lower part of the reactor and reducing the overall depth of conversion of raw materials.
  • the raw materials for the necessary destructive thermal transformations must be heated in a furnace to a temperature exceeding the optimum.
  • An increase in temperature leads to an increase in gas and coke formation, reduces the yield of middle distillate fractions and their content in the liquid product, which increases the viscosity and reduces its quality.
  • the reactor with which the method is carried out has a shell, upper and lower bottoms, a separation space in the upper part of the reactor, nozzles for withdrawing vapors and liquid product located on the upper and lower bottoms of the reactor, respectively, as well as a nozzle for introducing heat-treated raw materials, located tangentially on the shell, above the level of the liquid phase in the reactor, comprising 50-75% of the height of the reactor.
  • the disadvantage of the reactor is the presence of a stagnant zone at the junction of the outlet pipe for the liquid phase due to a change in the direction of movement of the liquid phase when the liquid product is removed from the reactor from horizontal rotational to vertical translational.
  • the objective of the invention is to improve the quality of the liquid product, reducing energy consumption and reducing the intensity of coke deposition in the reactor.
  • the specified technical result is achieved by the fact that in the known method, which includes the tangential supply of heat-treated raw materials to the reactor above the phase separation level, the withdrawal of vapors and liquid product from the top and bottom of the reactor, respectively, the feature is that the raw materials are pre-mixed with the recycled part of the liquid product , the resulting mixture is introduced into the reactor with an inclination to the horizon, so that the interface is a surface of revolution, while part of the liquid product is recycled, and the balance th part of the liquid product is removed.
  • preliminary mixing of the raw material with the recirculated portion of the liquid product ensures a reduction in coke deposition on the walls of the reactor by increasing the flow rate of the liquid phase through the reactor, and a corresponding increase in the velocity of the liquid phase along the walls of the reactor.
  • the accelerated rotational movement of the reaction mass improves the separation of reaction products.
  • the vertical temperature profile in the reactor is equalized, which allows the process to be carried out in the optimal temperature range and, accordingly, to reduce the heating temperature of the raw materials while maintaining the given depth of conversion of the raw materials and the quality of the liquid product.
  • a device for liquid-phase thermal conversion of heavy hydrocarbon feedstocks includes a reactor having a shell, upper and lower bottoms, a separation space, a nozzle for introducing heat-treated raw materials tangentially located on the shell, and nozzles for withdrawing vaporous and liquid products located on the upper and lower bottoms, respectively , the feature of which is that the bottom of the reactor is made in the form of a convex-concave surface of revolution around the vertical axis, with a convex part, with adjacent to the reactor shell, the raw material input pipe is inclined to the horizontal, and the liquid product output pipe is located tangentially from the outside of the convex surface of the lower bottom, in addition, a water-jet pump is additionally installed on the raw material input line into the reactor and connected to the liquid product input line .
  • the installation of a water-jet pump on the line for introducing raw materials into the reactor allows recirculation of a part of the liquid product from the bottom of the reactor to the input of raw materials due to the energy of compressed raw materials in the vapor-liquid state, which was previously irretrievably lost on the reducing valve installed at the outlet of their raw material heating furnace .
  • a device for implementing the method consists of a water-jet pump 1 and a reactor 2, a pipe 3 for supplying a recycled portion of a liquid product to a water-jet pump, and also lines for supplying raw materials and outputting products.
  • the reactor consists of a shell 4, an upper 5 and a lower 6 bottom, and is equipped with a raw material supply pipe 7, a vapor outlet pipe 8 and a liquid product outlet pipe 9.
  • the proposed reactor is simple to manufacture, has no internal devices, and has reduced metal consumption.
  • the method is as follows. Heated heavy hydrocarbon feedstock (I) and fed into the water-jet pump 1 as a working fluid, is mixed with the recirculated part of the liquid product (II) fed through the line 3 to the water-jet pump.
  • the mixture (III) is fed into the reactor 2 through the raw material supply pipe 7. From the pipe 8 located on the bottom of the reactor 5, the vapor (IV) is withdrawn, and the liquid product (V) is removed from the pipe 9 located on the bottom of the reactor 6, part of which (II) is recycled.
  • the claimed invention meets the patentability criterion of "novelty.”
  • the author’s studies proved that the liquid-phase thermal conversion of heavy hydrocarbon feedstock, including its preliminary mixing with the recirculated part of the liquid product and introducing the resulting mixture into the reactor so that the phase interface is a surface of revolution using a device including a water-jet pump for feeding the recirculated part of the liquid product and a reactor having a lower bottom, made in the form of a convex-concave surface of revolution around a vertical axis, with in a convex portion adjacent to the reactor shell and the liquid product withdrawal conduit is located tangentially from the outside of the convex lower bottom surface can improve the quality of the liquid product, to reduce power consumption and to reduce the coke deposition in the reactor.
  • the claimed invention meets the patentability criterion of "inventive step”.
  • Example 1 The vacuum residue of West Siberian oil is heated to 485 ° C and subjected to visbreaking at 460 ° C and a pressure of 1.0 MPa for 8 min in a reactor with a convex-concave bottom, with the circulation of the liquid product with a flow rate of 2: 1 to the flow rate of raw materials.
  • the residue (+ 180 ° C) obtained as a liquid product with a yield of 86.5% of the mass has a conditional viscosity at 80 ° C of 13.0 and 0.18% of the mass, mechanical impurities, which meets the requirements of the standard for heating oil M 100.
  • Example 2 (in the conditions of the prototype).
  • the vacuum residue of West Siberian oil is heated to 500 ° C and subjected to visbreaking at 460 ° C and a pressure of 1.0 MPa for 8 min in a reactor with a convex elliptical bottom, without circulation of the liquid product.
  • the remainder (+ 180 ° C) obtained as a liquid product with a yield of 85% by weight, has a conditional viscosity at 80 ° C of 13.5 and 0.45% by weight, solids.
  • the proposed method due to improved control of the design of the reactor and recycling of the liquid product allows to obtain heating oil from oil residues that meets the requirements of GOST 10585-90 with high yield and improved quality.
  • the proposed method can be used in the oil refining industry, reproducible and when using the method, its purpose is realized.
  • the claimed invention meets the patentability criterion of "industrial applicability”.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

L'invention concerne des procédés et dispositifs de conversion thermique en phase liquide (craquage thermique, viscoréduction, formation de poix, thermopolycondensation) d'une charge d'hydrocarbure lourde possédant une tendance au dépôt de coke à la surface de l'équipement, et peut s'utiliser dans le raffinage du pétrole. Le procédé consiste en ce qui suit. Le procédé de conversion thermique en phase liquide d'une charge d'hydrocarbure lourde comprend une amenée tangentielle de la charge traitée thermiquement dans un réacteur au-dessus du niveau de séparation des phases, l'évacuation des vapeurs et du produit liquide depuis le haut et le base du réacteur, respectivement, la charge étant mélangée préalablement à la partie recirculée du produit liquide, et le mélange obtenu est introduit dans le réacteur avec une inclinaison par rapport à l'horizon, de façon que la surface de séparation des phases se présent comme une surface de révolution, une partie du produit liquide étant recyclée, et le reste du produit liquide étant évacué.
PCT/RU2013/000816 2012-09-24 2013-09-19 Procédé et dispositif de conversion thermique en phase liquide d'une charge d'hydrocarbure lourde WO2014046572A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2012140883 2012-09-24
RU2012140883/04A RU2503707C1 (ru) 2012-09-24 2012-09-24 Способ и устройство для жидкофазной термической конверсии тяжелого углеводородного сырья

Publications (2)

Publication Number Publication Date
WO2014046572A2 true WO2014046572A2 (fr) 2014-03-27
WO2014046572A3 WO2014046572A3 (fr) 2014-05-22

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PCT/RU2013/000816 WO2014046572A2 (fr) 2012-09-24 2013-09-19 Procédé et dispositif de conversion thermique en phase liquide d'une charge d'hydrocarbure lourde

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RU (1) RU2503707C1 (fr)
WO (1) WO2014046572A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2699807C2 (ru) * 2016-03-29 2019-09-11 Андрей Владиславович Курочкин Установка замедленной термической конверсии мазута
RU2615983C1 (ru) * 2016-05-16 2017-04-12 Андрей Владиславович Курочкин Устройство замедленной термической конверсии

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147753A (en) * 1975-10-14 1979-04-03 Kureha Kagaku Kogyo Kabushiki Kaisha Apparatus for the thermal cracking of heavy hydrocarbon
RU2113452C1 (ru) * 1996-01-16 1998-06-20 Валерий Георгиевич Леонтьевский Каталитический реактор
RU2145625C1 (ru) * 1997-02-24 2000-02-20 Институт проблем нефтехимпереработки АН Республики Башкортостан Способ жидкофазного термического крекинга и реактор для его осуществления
RU2345121C1 (ru) * 2007-10-10 2009-01-27 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ НАУЧНО-ПРОИЗВОДСТВЕННОЕ ПРЕДПРИЯТИЕ НОУпром Реактор для жидкофазного термического крекинга
RU2408653C1 (ru) * 2009-05-13 2011-01-10 Государственное унитарное предприятие "Институт нефтехимпереработки Республики Башкортостан" (ГУП "ИНХП РБ") Способ переработки нефтяных остатков
US8118996B2 (en) * 2007-03-09 2012-02-21 Exxonmobil Chemical Patents Inc. Apparatus and process for cracking hydrocarbonaceous feed utilizing a pre-quenching oil containing crackable components

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147753A (en) * 1975-10-14 1979-04-03 Kureha Kagaku Kogyo Kabushiki Kaisha Apparatus for the thermal cracking of heavy hydrocarbon
RU2113452C1 (ru) * 1996-01-16 1998-06-20 Валерий Георгиевич Леонтьевский Каталитический реактор
RU2145625C1 (ru) * 1997-02-24 2000-02-20 Институт проблем нефтехимпереработки АН Республики Башкортостан Способ жидкофазного термического крекинга и реактор для его осуществления
US8118996B2 (en) * 2007-03-09 2012-02-21 Exxonmobil Chemical Patents Inc. Apparatus and process for cracking hydrocarbonaceous feed utilizing a pre-quenching oil containing crackable components
RU2345121C1 (ru) * 2007-10-10 2009-01-27 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ НАУЧНО-ПРОИЗВОДСТВЕННОЕ ПРЕДПРИЯТИЕ НОУпром Реактор для жидкофазного термического крекинга
RU2408653C1 (ru) * 2009-05-13 2011-01-10 Государственное унитарное предприятие "Институт нефтехимпереработки Республики Башкортостан" (ГУП "ИНХП РБ") Способ переработки нефтяных остатков

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Publication number Publication date
WO2014046572A3 (fr) 2014-05-22
RU2503707C1 (ru) 2014-01-10

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