WO2020022871A1 - Procédé de transformation des déchets contenant du pétrole - Google Patents

Procédé de transformation des déchets contenant du pétrole Download PDF

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Publication number
WO2020022871A1
WO2020022871A1 PCT/KZ2019/000007 KZ2019000007W WO2020022871A1 WO 2020022871 A1 WO2020022871 A1 WO 2020022871A1 KZ 2019000007 W KZ2019000007 W KZ 2019000007W WO 2020022871 A1 WO2020022871 A1 WO 2020022871A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
oil
liquid
suspension
solid
Prior art date
Application number
PCT/KZ2019/000007
Other languages
English (en)
Russian (ru)
Inventor
Рустем Рифович САФИН
Аслан Абдрахманович ОРЫНГАЛИЕВ
Original Assignee
Тоо "Reef Центробежные Технологии"
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 Тоо "Reef Центробежные Технологии" filed Critical Тоо "Reef Центробежные Технологии"
Priority to EA202092127A priority Critical patent/EA038683B1/ru
Publication of WO2020022871A1 publication Critical patent/WO2020022871A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B9/00—General arrangement of separating plant, e.g. flow sheets
    • B03B9/06—General arrangement of separating plant, e.g. flow sheets specially adapted for refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless

Definitions

  • the invention relates to the oil industry, and in particular to methods for processing oily waste and can be used for almost any oily waste ⁇ from K) solid (contaminated soils, drilling waste, etc.) to liquid, including stable oil emulsions.
  • Waterlogged fuel oil is usually tried to defend with heating in tanks, but it is rarely possible to bring them to regulatory requirements. Used oils and other heavy petroleum products are often burned as fuel.
  • the closest in essence to the present invention is a method of processing an aqueous suspension of oil refinery waste, comprising separate processing of liquid and solid raw materials to obtain streams of oil, water and solid phase, from which oil products can be extracted and practically no hydrocarbon residue cake, including stages :
  • the objective of the invention is to develop a method for the processing of oily waste with improved technical characteristics.
  • the technical result is the versatility and high mobility of processing technology, an increase in the yield of refined petroleum products, a high degree of automation of processes.
  • the method of processing oily waste providing for the separate processing of liquid and solid raw materials with obtaining flows of oil, water and solid phase, according to the invention, includes the following stages:
  • the liquid raw material is heated and fed to a centrifugal separator with the subsequent withdrawal of the separated flows of oil, water and aqueous suspension
  • the solid raw material is washed with hot water to remove large particles and / or objects and the prepared suspension is fed to a horizontal screw centrifuge
  • the centrifugal separator is a nozzle centrifugal separator, by means of a main feed pump, if necessary, heating said liquid feed is passed through at least one heat exchanger or heating device in which it is heated to an operating temperature (usually 60-98 ° C), and filters protecting the separator from large mechanical particles.
  • Mentioned heat exchangers are a set of no more sin heat exchangers such as "raw materials / water”, “raw materials / oil”, “raw materials / agent”.
  • the oil stream after the separator is removed with heat exchange with an incoming raw material stream in the raw / oil heat exchanger or without it, removing the water stream! in the said intermediate tank, as well as the stream of aqueous suspension accumulate in at least one suspension tank with further output to a horizontal screw centrifuge.
  • stage ii large objects and particles up to 5 mm in size are removed from solid raw materials by mechanical sorting methods (grates, vibrating screens, screens, etc.), they are washed with hot water using stirrers or other mixing methods and then put on a horizontal screw centrifuge . If there is a significant content of large particles and / or the need to achieve low humidity of the solid dump, the stage of preliminary deposition of solid particles on the filter centrifuge is added, the suspension of fine particles separated is removed to a horizontal screw centrifuge, and the solid dump is removed from the installation.
  • mechanical sorting methods grates, vibrating screens, screens, etc.
  • the suspension from stages i), d) and V) is separated into a liquid and a dump of solid particles.
  • Said dump of solid particles is directed to a sludge tank located under a horizontal screw centrifuge, with a further withdrawal from the unit, and a liquid stream is supplied to said intermediate tank.
  • the precipitation of the solid phase from suspensions of various sources can be joint or separate (using several centrifuges), and the centrifuges themselves can be performed in two-phase (main) and three-phase versions.
  • two fluid flows are discharged from the centrifuge: oil for purification at the centrifugal nozzle separator (stage ⁇ )) and water into the intermediate tank.
  • said intermediate tank is a storage tank with an oil trap located above or near the storage tank, or without it.
  • the oil flow from the oil trap is led out to the main feed pump directly or through an additional oil tank.
  • Water with reduced oil content from 5 oil traps, a nozzle centrifugal separator of a three-phase screw centrifuge are accumulated in the said storage tank.
  • water is pumped from the storage tank through a filter (protection from large particles), if necessary, it is heated in a heat exchanger or other heating device and fed to a self-discharging separator for separation into water, oil and a suspension of fine solids.
  • the purified water from the separator is sent to the washing of solid raw materials (stage I)), and the excess is removed from the installation with heat exchange with or without a flow of incoming liquid raw materials.
  • the oil flow from the separator is discharged directly to the main feed pump or 5 through an additional oil tank.
  • the said suspension of fine particles is sent to step in) for precipitation or is withdrawn from the installation.
  • the processing of liquid and solid raw materials can be carried out jointly or separately.
  • the technology can be used in full configuration or partially. For example, if there is no need to process solid raw materials, the technology can work without step n) or at low requirements for the quality of treated water, the process can be carried out without additional purification self-discharging separator 5 - stage v).
  • the claimed method for the processing of oily waste is carried out on the basis of a single technological complex for the processing of oily waste, based on the principle of physical separation of produced fluids into components in the centrifugal force field and is implemented using centrifugal equipment.
  • Figure 1 presents a visual diagram of the implementation of the method of processing oily waste.
  • PI Main feed pump; TO ⁇ heat exchangers; ODA-20 - nozzle centrifugal separator; CF-3000 - Decanter; WSE-20 - Self-loading centrifugal separator; PSE - Primary suspension capacity; ALL - Secondary suspension capacity; NOT - Intermediate capacity.
  • the invention works as follows. The description is given on the example of a small industrial plant based on components manufactured by GEA Westfalia Separator. Production of plants of a different capacity and using equipment from other manufacturers is also possible.
  • Liquid raw materials are supplied to the installation from raw materials tanks installed next to the installation.
  • the maximum liquid level in the raw material tanks should be below the overflow mark in the oil trap by at least 20 cm.
  • the raw material enters the installation at the reception of the main raw material pump R-1, which operates with a capacity control of 1 to 5 m / h.
  • the pump pumps the feed through three consecutive pipe-in-pipe heat exchangers, where the feed is heated by the outgoing flows of water (TO feed / water) and oil (TO feed / oil), and then the coolant: (TO feed / agent) is brought to the specified operating temperature - usually from 60 to 98 ° C.
  • the heated raw material is pumped through a double strainer or wire filter (DF 1 mm.), Where particles> 1 mm in size stop, the filter sections work alternately and, as clogged, the filter elements are cleaned manually.
  • DF 1 mm. double strainer or wire filter
  • additional filter elements for stopping particles are additionally provided 0.5 mm in size.
  • Prepared raw material through a metering device enters the nozzle centrifugal separator (ODA-20).
  • the emulsion is divided into oil and water streams, as well as an aqueous suspension of mechanical parts c (from 1 micron and above).
  • Refined oil is measured by a meter and under its own pressure of 2-3 atm. It is removed from the installation after heat exchange with incoming raw materials.
  • the water flow is sent to an intermediate tank with flow metering on the meter, from which water is pumped to a centrifugal separator to ensure nozzle flushing - the flow rate is maintained at 0.5-1 m / h.
  • the suspension of solid particles from the separator flows into the primary suspension tank installed under the separator.
  • the suspension flows from the primary tank by gravity to an external drainage tank.
  • the suspension flows from the primary tank by gravity to the secondary suspension tank located in the decanter unit.
  • the total capacity of the containers is at least 2 m 3 .
  • the containers should be filled no more than by 60%, since in case of emergency blackouts the nozzle separator will be washed with water for another 15 minutes and thus the container will be filled with water.
  • the suspension is pumped to a horizontal screw centrifuge, where, under the action of centrifugal forces, they are separated into a solid phase dump and water.
  • the dump of mechanical impurities from the decanter falls into the slurry receiver installed directly below it, and then the screw conveyor is removed from the installation into an 8 m 3 container installed next to the installation.
  • the liquid purified on the decanter from the solid phase (main part) under its own pressure is sent to the intermediate tank with measurement on the flow meter. Stage water treatment.
  • the water released during the processing enters an intermediate tank consisting of two elements: an oil trap and a storage tank.
  • the liquid enters the oil trap, where due to gravity sludge, oil is partially separated for 10-30 minutes and sent to the main feed pump PE.
  • Water with a reduced oil content flows into a storage tank with a volume of 3-4 m located directly under the oil trap.
  • Water from the storage tank is drawn in by a pump and pumped through a double strainer (DF 0.5 mm.), Where particles> 0.5 mm in size stop.
  • the principle of operation of the filter is similar to the filter of the nozzle separator. Then, in a plate heat exchanger (water / agent maintenance), the liquid is heated by the heat carrier to the operating temperature (from 70 to 98 ° C) and through the flow meter enters the self-unloading centrifugal separator type WSE-20.
  • the purified iodine water with its own pressure (up to 2 atm.) Is measured in the meter and after heat exchange with incoming raw materials in the heat exchanger (TO raw materials / water) is removed from the installation.
  • the separated water feeds into the supply water tank installed in the decanter unit. Depending on the required mode, water is supplied for recharge before or after heat exchange.
  • the oil separated in the separator together with the oil separated in the oil trap, is sent through the flow meter to the reception of the main raw material pump P1 and then to the after-treatment in the nozzle separator as part of the main process.
  • a suspension of fine particles from the separator falls into a suspension tank installed directly below the separator. Depending on the properties, the suspension is sent for precipitation into the decanter unit together with the suspension of the nozzle separator or is withdrawn from the installation into an 8 m 3 container installed next to the installation.
  • the processing of solid waste is carried out by washing the raw materials with hot water with washing additives.
  • the raw materials for processing are transported by road and unloaded into the receiving hopper, and the washing water is supplied by means of a pump from a water tank installed in the decanter unit.
  • a 100 mm grate is installed on the hopper to stop large items. Clumped and frozen lumps are manually broken on the grate, and large objects (sticks, stones, metal, etc.) are washed on the grate with hot water and removed. From the receiving hopper, raw materials are conveyed by a screw conveyor into the receiving chamber of the washing tank, where 5 mm on the surface of the vibrating slotted filter. (vibrating screen) is washed away by flowing jets of hot water. Washed items larger than 5 mm are removed from the process automatically or manually.
  • the mixture of raw materials and water that has passed through the grate is in a washing tank, where it is mixed with turbine mixers for 30-40 minutes and thereby the raw materials are washed from oil and soluble salts. From the washing tank, the mixture is taken by a screw pump and fed to the decanter unit for separation.
  • the solid phase is deposited and removed from the installation.
  • the liquid through the meter is sent to the intermediate tank and then cleaned as part of the overall technological cycle.
  • the refined oil and water are removed from the installation under pressure up to 2 atm.
  • the heat source at the installation is a boiler operating on liquid fuel - primarily, oil produced at the installation.
  • the installation is controlled from a single remote control.
  • the oil obtained by the claimed method corresponds to the 1st quality group according to GOST R 51858-2002.
  • Oil. General technical conditions water not more than 0.5%, solids up to 0.05% and chloride salts up to 100 mg / l
  • Water is purified from solids and oil and is intended for injection into reservoirs to maintain reservoir pressure.
  • less than 30 ppm of mechanical impurities and oil products which corresponds to an average and good level of water purification according to OST 39-225-88 “Water for flooding oil reservoirs. Quality Requirements. ”

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Physical Water Treatments (AREA)
  • Centrifugal Separators (AREA)

Abstract

L'invention concerne un procédé de transformation de déchets contenant du pétrole. On effectue un traitement séparé de matières premières solides ou liquides en obtenant des flux de pétrole, d'eau et de phase gazeuse. Au premier stade les matières premières liquides sont chauffées et acheminées dans un séparateur centrifuge pour être séparées en pétrole, eau et suspension aqueuse. Les matières premières solides sont rincées à l'eau chaude et la suspension obtenue est acheminée vers une centrifugeuse à vis horizontale. Les suspensions ci-mentionnées sont acheminées dans une centrifugeuse à vis horizontale pour être séparées en particules solides et un liquide. Ce liquide et cette provenant du séparateur centrifuge sont acheminés dans la cuve de sédimentation. Le pétrole provenant du récipient est réinjecté au stade de départ du processus et l'eau à teneur réduite en pétrole est purifié sur un séparateur et évacuée hors de l'installation.
PCT/KZ2019/000007 2018-07-25 2019-05-16 Procédé de transformation des déchets contenant du pétrole WO2020022871A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EA202092127A EA038683B1 (ru) 2018-07-25 2019-05-16 Способ переработки нефтесодержащих отходов

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KZ2018/0522.1 2018-07-25
KZ20180522 2018-07-25

Publications (1)

Publication Number Publication Date
WO2020022871A1 true WO2020022871A1 (fr) 2020-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KZ2019/000007 WO2020022871A1 (fr) 2018-07-25 2019-05-16 Procédé de transformation des déchets contenant du pétrole

Country Status (2)

Country Link
EA (1) EA038683B1 (fr)
WO (1) WO2020022871A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113087185A (zh) * 2021-04-27 2021-07-09 山东理工大学 油泥处理方法
CN113546942A (zh) * 2020-04-26 2021-10-26 中国石油天然气集团有限公司 一种用于含油固废中油分萃取及萃取剂回收的装置及工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999025795A1 (fr) * 1997-11-19 1999-05-27 Unipure Corporation Procede de recuperation d'une huile de haute qualite a partir de residus d'emulsions de raffinerie
EA001892B1 (ru) * 1997-11-17 2001-10-22 Континуум Энвайронментал, Инк. Система для переработки отходов нефтепереработки
RU79885U1 (ru) * 2008-10-22 2009-01-20 Закрытое акционерное общество "ТЕХНОПРОТЕКТ" Установка для утилизации твердых и/или жидких нефтесодержащих отходов

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EA001892B1 (ru) * 1997-11-17 2001-10-22 Континуум Энвайронментал, Инк. Система для переработки отходов нефтепереработки
WO1999025795A1 (fr) * 1997-11-19 1999-05-27 Unipure Corporation Procede de recuperation d'une huile de haute qualite a partir de residus d'emulsions de raffinerie
RU79885U1 (ru) * 2008-10-22 2009-01-20 Закрытое акционерное общество "ТЕХНОПРОТЕКТ" Установка для утилизации твердых и/или жидких нефтесодержащих отходов

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113546942A (zh) * 2020-04-26 2021-10-26 中国石油天然气集团有限公司 一种用于含油固废中油分萃取及萃取剂回收的装置及工艺
CN113087185A (zh) * 2021-04-27 2021-07-09 山东理工大学 油泥处理方法

Also Published As

Publication number Publication date
EA202092127A1 (ru) 2021-04-08
EA038683B1 (ru) 2021-10-04

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