WO2016199692A1 - Procédé de récupération d'une fraction de pétrole dans de la boue de pétrole brut, et pétrole brut - Google Patents

Procédé de récupération d'une fraction de pétrole dans de la boue de pétrole brut, et pétrole brut Download PDF

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Publication number
WO2016199692A1
WO2016199692A1 PCT/JP2016/066584 JP2016066584W WO2016199692A1 WO 2016199692 A1 WO2016199692 A1 WO 2016199692A1 JP 2016066584 W JP2016066584 W JP 2016066584W WO 2016199692 A1 WO2016199692 A1 WO 2016199692A1
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Prior art keywords
crude oil
sludge
light liquid
temperature
oil
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PCT/JP2016/066584
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English (en)
Japanese (ja)
Inventor
小林　秀一
拓 森山
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コスモ石油株式会社
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Application filed by コスモ石油株式会社 filed Critical コスモ石油株式会社
Priority to JP2016566294A priority Critical patent/JP6136042B2/ja
Priority to CA2989100A priority patent/CA2989100C/fr
Priority to MX2017014228A priority patent/MX2017014228A/es
Priority to RU2017140086A priority patent/RU2676325C1/ru
Publication of WO2016199692A1 publication Critical patent/WO2016199692A1/fr

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    • 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
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • 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
    • C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
    • C10G31/06—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by heating, cooling, or pressure treatment
    • 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
    • C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
    • C10G31/10—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for with the aid of centrifugal force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
    • F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting

Definitions

  • the present invention relates to a method for recovering oil from crude oil sludge accumulated in a crude oil tank in which crude oil is stored.
  • Crude oil sludge accumulated in a crude oil tank is generally treated as industrial waste after being taken out from the crude oil tank, but its disposal requires high costs. On the other hand, since crude oil sludge often contains about 30 to 80% by volume of oil, there is a great need for recovery of oil in crude oil sludge.
  • Patent Documents 1 to 3 Conventionally, attempts have been made to recover oil from crude sludge by vacuum distillation, heating separation, centrifugation, or the like (for example, Patent Documents 1 to 3).
  • oil recovered from the crude oil sludge is of low quality, when producing a fuel of good quality using this as a raw material oil, the refining cost becomes high. Therefore, oil recovered from crude oil sludge is often used directly as an inexpensive fuel oil.
  • the oil recovered from the crude oil sludge is mixed with the crude oil, it will be possible to sell it as a more expensive crude oil rather than an inexpensive fuel oil.
  • the oil component recovered from the crude oil sludge has low fluidity and poor compatibility with the crude oil, so when the oil component recovered from the crude oil sludge is directly mixed with the crude oil, sludge is generated again. It turns out that it becomes easy to do.
  • an object of the present invention is to provide a method for recovering oil in crude sludge that hardly generates sludge again even if the oil recovered from the crude sludge is mixed with crude oil.
  • the crude sludge (A) and the crude oil (B) are mixed in such a proportion that the ratio of the crude oil sludge (A) to the total of the crude oil sludge (A) and the crude oil (B) is 20 to 95 mass. %, And then the mixture of crude oil sludge (A) and crude oil (B) is heated and stirred at 40 to 200 ° C. to obtain a heated and stirred product of crude oil sludge (A) and crude oil (B).
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the present invention (2) includes a first step (2) in which the crude oil sludge (A) is heated at 40 to 200 ° C. to obtain a heat-treated product of the crude oil sludge (A), A second step (2) for separating the light liquid and the heavy liquid by centrifuging the heat-treated product at 40 to 200 ° C. to obtain a light liquid;
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the present invention provides a method for recovering an oil content in crude oil sludge.
  • the crude oil sludge (A) and the crude oil (B) are mixed at a ratio of the crude oil sludge (A) of 20 to 95 mass with respect to the total of the crude oil sludge (A) and the crude oil (B). %, And then the mixture of crude oil sludge (A) and crude oil (B) is heated and stirred at 40 to 200 ° C. to obtain a heated and stirred product of crude oil sludge (A) and crude oil (B).
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the crude sludge (A) is heated at 40 to 200 ° C. to obtain a heat-treated product of the crude sludge (A),
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • a third step (2) in which the temperature of the crude oil (C) is lower than the temperature of the light liquid and the difference between the temperature of the light liquid and the temperature of the crude oil (C) is within 40 ° C.
  • a method for recovering an oil content in crude oil sludge The mixture of crude oil sludge (A) and crude oil (B) is heated and stirred at 40 to 200 ° C. so that the ratio of A) is 20 to 95% by mass.
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the crude oil sludge (A) and the crude oil (B) are mixed, and then the crude oil sludge (A) and the crude oil In this step, the mixture of (B) is heated and stirred at 40 to 200 ° C. to obtain a heated and stirred processed product of crude oil sludge (A) and crude oil (B).
  • the crude oil sludge (A) is sludge generated from the crude oil in which the crude oil is stored and deposited on the bottom of the crude oil tank.
  • Crude oil sludge (A) is removed from solids, moisture, etc. after crude oil extraction, stored in a crude oil tank, generated from crude oil in the crude oil tank before being shipped to a refinery, and deposited at the bottom of the crude oil tank Crude oil sludge; crude oil sludge accumulated at the bottom of a crude oil tank of a crude oil tanker; crude oil sludge generated from crude oil in a crude oil tank for storage before being refined at a refinery, and deposited at the bottom of the crude oil tank.
  • Crude oil sludge (A) may be generated from one type of crude oil or may be generated from a plurality of types of crude oil.
  • Crude oil sludge (A) contains oil, asphaltenes, iron, sand, water and the like.
  • the oil in the crude oil sludge (A) is mainly paraffins and aromatic hydrocarbons having 40 or more carbon atoms.
  • the oil content in this crude oil sludge (A) is a component collect
  • the method of taking out the crude oil sludge (A) deposited in the crude oil tank is not particularly limited.
  • the crude oil deposited in the crude oil tank after the crude oil in the crude oil tank is extracted out of the crude oil tank.
  • High-pressure crude oil is injected into the sludge (A), and the crushed or partially dissolved crude oil sludge (A) is pushed out of the crude oil tank with crude oil (COW: Crude Oil Washing), and the crude oil in the crude oil tank is moved out of the crude oil tank
  • Examples include a method of manually extracting the crude oil sludge (A) accumulated in the crude oil tank after the extraction.
  • the crude oil (B) to be mixed with the crude oil sludge (A) is not particularly limited, and may be a crude oil before removing solids or moisture after the crude oil is mined and stored in the crude oil tank.
  • the crude oil that has just been stored in the crude oil tank after removing water and moisture, etc. may be crude oil before the crude oil sludge is generated, or the crude oil sludge at the bottom of the crude oil tank by storing it in the crude oil tank for a certain period of time. It may be the crude oil in the crude oil tank after the occurrence of.
  • Crude oil (B) may be the same type of crude oil as the source of crude sludge (A) or a different type of crude oil.
  • crude oil sludge (A) When removing crude oil sludge (A) from the crude oil tank, if the crude oil sludge (A) is taken out by pushing the crude oil sludge (A) out of the crude oil tank with crude oil (for example, COW), it is removed from the crude oil tank.
  • crude oil for example, COW
  • the crude oil used to remove crude oil sludge (A) is crude oil (B).
  • the ratio of the crude oil sludge (A) to the total of the crude oil sludge (A) and the crude oil (B) is 20 to 95% by mass, preferably 40 to 90% by mass, more preferably Crude oil sludge (A) and crude oil (B) are mixed so that it may become 60-90 mass%. If the ratio of crude oil sludge (A) to the total of crude oil sludge (A) and crude oil (B) is less than the above range, the amount of treatment in the second step (1) will increase, leading to a decrease in economic efficiency, When the above range is exceeded, oil recovery from the crude oil sludge (A) becomes insufficient.
  • crude oil sludge (A) When the crude oil sludge (A) is taken out from the crude oil tank, when the crude oil sludge (A) is taken out by pushing the crude oil sludge (A) out of the crude oil tank with crude oil (for example, COW washing), the crude oil sludge ( The crude oil used for taking out A) is included in crude oil (B), and the ratio of crude oil sludge (A) to the total of crude oil sludge (A) and crude oil (B) is calculated.
  • crude oil sludge (A) When the crude oil sludge (A) is taken out from the crude oil tank, when the crude oil sludge (A) is taken out by pushing the crude oil sludge (A) out of the crude oil tank with crude oil (for example, COW washing), the crude oil sludge ( The crude oil used for taking out A) is included in crude oil (B), and the ratio of crude oil sludge (A) to the total of crude oil sludge
  • the ratio of the crude oil sludge (A) accumulated in the bottom of the crude oil tank and the crude oil sludge (A) to the total crude oil used to take out the crude oil sludge (A) is a predetermined mixing ratio, that is, the crude oil Use crude oil in such an amount that the ratio of crude sludge (A) to the sum of sludge (A) and crude oil (B) is 20 to 95% by mass, preferably 40 to 90% by mass, more preferably 60 to 90% by mass.
  • the crude oil sludge (A) is taken out of the crude oil tank, and the extracted crude oil sludge (A) and crude oil mixture may be used as a mixture of crude oil sludge (A) and crude oil (B) used for heating and stirring as they are.
  • the crude oil sludge (A) accumulated at the bottom of the crude oil tank is taken out of the crude oil tank using a small amount of crude oil, and the mixture of the extracted crude oil sludge (A) and the crude oil is further mixed with the crude oil sludge (A).
  • the predetermined mixing ratio that is, the ratio of crude oil sludge (A) to the total of crude oil sludge (A) and crude oil (B) is 20 to 95% by mass, preferably 40 to 90% by mass, more preferably 60 to 90% by mass, and the resulting mixture may be a mixture of crude oil sludge (A) and crude oil (B) used for heating and stirring. .
  • the mixture of crude oil sludge (A) and crude oil (B) is then heated and stirred at 40 to 200 ° C., preferably 50 to 150 ° C., more preferably 60 to 100 ° C. A heated and stirred product of (A) and crude oil (B) is obtained.
  • the heating and stirring temperature is less than the above range, oil recovery from the crude oil sludge (A) becomes insufficient, and when it exceeds the above range, disadvantages due to loss of light fractions occur.
  • the method of heating and stirring the mixture of crude oil sludge (A) and crude oil (B) is not particularly limited.
  • crude oil sludge A
  • crude oil sludge B
  • the heating and stirring time is not particularly limited and is selected according to the stirring conditions so as to obtain a uniform mixed state.
  • the oil content in the crude oil sludge (A) is not particularly limited, but is usually 30 to 80% by mass.
  • the oil in the crude oil sludge (A) is a mixture of the crude oil sludge (A) and the crude oil (B) at 40 to 200 ° C., preferably 50 to 150 ° C., more preferably 60 to 100 ° C. Dissolve in crude oil (B) by stirring with heating.
  • the second step (1) according to the method for recovering the oil content in the crude oil sludge according to the first aspect of the present invention is the heating and stirring of the crude oil sludge (A) and the crude oil (B) obtained by performing the first step (1).
  • This is a step of obtaining a light liquid by centrifuging the treated product at 40 to 200 ° C. to separate the light liquid and the heavy component.
  • the temperature at which the crude oil sludge (A) and the crude oil (B) are heated and stirred is centrifuged at 40 to 200 ° C., preferably 50 to 150 ° C., more preferably 60 to 100 ° C. If the centrifugation temperature is less than the above range, some of the heat-stirred products of crude oil sludge (A) and crude oil (B) will solidify during centrifugation, or the fluidity of the heat-stirred products will greatly decrease. Therefore, the centrifugal separation cannot be performed, and if it exceeds the above range, a demerit due to loss of the light fraction occurs.
  • the temperature at which the crude oil sludge (A) and the crude oil (B) are subjected to centrifugal separation of the heated and stirred products is the same as that in the first step (1). It is preferable to make it the same as the heating stirring temperature of the mixture of (B) or to make it higher than the heating stirring temperature.
  • the heat-stirred processed product of crude oil sludge (A) and crude oil (B) obtained by performing the first step (1) is a mixture of a light liquid having a small specific gravity and a heavy component having a specific gravity larger than that of the light liquid.
  • the light liquid and the heavy component are separated by the specific gravity difference.
  • the light liquid is a liquid obtained by dissolving the oil in the crude oil sludge (A) in the crude oil (B) in the first step (1). That is, the light liquid basically consists of crude oil (B) and oil in the crude oil sludge (A) dissolved in the crude oil (B).
  • the heavy component is a component in the crude oil sludge (A) that was not dissolved in the crude oil (B) in the first step (1), and is mainly entrapped in asphaltenes, moisture, iron, sand, and these components. Oil that is difficult to separate.
  • the centrifuge for centrifuging the heat-stirred product is not particularly limited, and the light liquid and the heavy fraction are continuously mixed with the specific gravity while maintaining the above-mentioned centrifugation temperature. Any material can be used as long as it can be separated by the difference between the two. For example, a decanter type centrifuge, a disk separator type centrifuge, or a combination of these is available.
  • the physical properties of the light liquid obtained by performing the second step (1) are not particularly limited, but the density is preferably 0.80 to 0.95 g / cm 3 , more preferably 0.80 to 0.88 g / cm 3 .
  • the melting point is preferably 40 to 150 ° C., more preferably 40 to 110 ° C., still more preferably 40 to 90 ° C., and the freezing point is preferably 30 to 140 ° C., more preferably 30 to 100 ° C., and still more preferably 30 It is ⁇ 80 ° C. and the oil content is 60% by mass or more.
  • the light liquid obtained by performing the second step (1) is brought to a temperature higher than the melting point, In this process, the light liquid is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the temperature of the light liquid is lower than the melting point, it becomes difficult to mix the light liquid with the crude oil (C) in the crude oil transfer pipe.
  • the crude oil (C) in which the light liquid is mixed is not particularly limited, and may be crude oil before removing solids or moisture after storing the crude oil and storing it in the crude oil tank, Crude oil that has been solidly removed after being extracted and stored in a crude oil tank. It may be crude oil before crude oil sludge is generated, or it can be stored in the crude oil tank for a certain period. It may be the crude oil in the crude oil tank after the crude oil sludge is generated at the bottom. Crude oil (C) may be the same type of crude oil as the source of crude oil sludge (A) or a different type of crude oil, and may be the same type of crude oil as crude oil (B). Or different types of crude oil.
  • the oil content in the crude oil sludge (A) is mainly hydrocarbons having a carbon number of 40 or more and a large molecular weight. Therefore, the temperature of the light liquid is higher than the temperature when the heat stirring is performed in the first step (1). If the temperature is too low, the light liquid will solidify or the fluidity of the light liquid will become extremely low.
  • the third step (1) the light liquid is brought to a temperature higher than the melting point and the light liquid is mixed with the crude oil (C). To do.
  • the temperature of the light liquid is preferably a temperature equal to or higher than the melting point, and is in the range of 40 to 200 ° C., more preferably 50 to 150 ° C., and further preferably 60 to 100 ° C.
  • the temperature of crude oil (C) and light liquid when mixing light liquid with crude oil (C) is higher than the temperature of light liquid. Or the temperature of the crude oil (C) is lower than the temperature of the light liquid and the difference between the temperature of the light liquid and the temperature of the crude oil (C) is within 40 ° C.
  • the temperature of the crude oil (C) is lower than the temperature of the light liquid, the smaller the difference between the temperature of the light liquid and the temperature of the crude oil (C), the more the crude oil (C) is mixed with the light liquid.
  • the oil component of the crude oil sludge (A) is suppressed or deposited finely even if it is deposited, making it difficult to cause sludge, so the difference between the temperature of the light liquid and the temperature of the crude oil (C) Is within 40 ° C, the precipitation of the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed, or even if it is precipitated, it is finely precipitated and is less likely to cause sludge. Play.
  • the difference between the temperature of the light liquid and the temperature of the crude oil (C) is preferably within 30 ° C, more preferably within 20 ° C, and even more preferably 10 ° C. If it is within the range, precipitation of the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed or even if it is precipitated, the effect of being finely precipitated and hardly causing sludge is enhanced.
  • the temperature of the crude oil (C) when the temperature of the crude oil (C) is equal to or higher than the temperature of the light liquid, when the light liquid is mixed with the crude oil (C), the oil content of the crude oil sludge (A) in the crude oil (C) Even if precipitation is suppressed, or even if it is precipitated, it is finely deposited and is unlikely to cause sludge. If the temperature of the crude oil (C) is higher than the temperature of the light liquid, the crude oil (C) When the liquid is mixed, the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed or even if it is precipitated, the oil is finely precipitated and is less likely to cause sludge. .
  • the difference between the temperature of the crude oil (C) and the temperature of the light liquid is preferably within 10 ° C, more preferably within 5 ° C.
  • the temperature of the crude oil (C) flowing in the crude oil transfer pipe satisfies the relationship between the temperature of the crude oil (C) and the temperature of the light liquid, but if the temperature of the crude oil (C) is too high Since disadvantages due to loss of light fractions occur, the temperature of the crude oil (C) is preferably 60 ° C. or less, and more preferably 50 ° C. or less.
  • the light liquid is mixed with the crude oil (C) by mixing the light liquid with the crude oil (C) in the crude oil transfer pipe.
  • the crude oil transfer pipe is a transfer pipe for transferring the crude oil (C), and since the crude oil (C) flows through the crude oil (C), mixing the light liquid with the crude oil (C) in the crude oil transfer pipe means that the crude oil is transferred. It refers to mixing light liquid with crude oil (C) flowing in the pipe.
  • the third step (1) by mixing the light liquid with the flowing crude oil (C), the oil component of the crude oil sludge (A) precipitated in the crude oil (C) is precipitated before agglomeration.
  • the oil content of the crude oil sludge (A) can be quickly dispersed in the crude oil (C), sludge can be made difficult to occur in the crude oil (C).
  • the oil content of crude oil sludge (A) precipitated in crude oil (C) is dispersed in crude oil (C). Since it is difficult, even if the oil content of the crude oil sludge (A) becomes a fine precipitate that is difficult to form a sludge, the oil is agglomerated immediately after that, so that the sludge is easily generated in the crude oil (C).
  • the amount of the light liquid mixed with the crude oil (C) is preferably 45 parts by volume or less, more preferably 2 to 15 parts by volume with respect to 100 parts by volume of the crude oil (C).
  • the amount of light liquid mixed with crude oil (C) is in the above range, sludge is less likely to occur in crude oil (C).
  • the linear velocity of the crude oil (C) flowing in the crude oil transfer pipe is preferably 1 cm / second or more, more preferably 4 cm / second or more, and further preferably 6 cm / second or more. Since the linear velocity of the crude oil (C) flowing in the crude oil transfer pipe is in the above range, the oil content of the crude oil sludge (A) precipitated in the crude oil (C) is easily dispersed. It becomes difficult to occur. There is no upper limit for the linear velocity of crude oil (C) flowing in the crude oil transfer pipe, but the linear velocity of crude oil in the normal crude oil transfer pipe is often 500 cm / second or less.
  • the crude oil (D) of the present invention comprises a crude oil sludge (A) and a crude oil (B), wherein the ratio of the crude oil sludge (A) to the total of the crude oil sludge (A) and the crude oil (B) is 20 to 95 mass. %, And then the mixture of crude oil sludge (A) and crude oil (B) is heated and stirred at 40 to 200 ° C. to obtain a heated and stirred product of crude oil sludge (A) and crude oil (B).
  • the first step (1), centrifugation, light liquid, heavy fraction, second step (1), crude oil (C), and third step (1) are the recovery of the oil content in the crude sludge of the first aspect of the present invention.
  • Crude oil sludge (A), crude oil (B), a mixture of crude oil sludge (A) and crude oil (B), a heated and stirred product of crude oil sludge (A) and crude oil (B), first step (1), Centrifugation, light liquid, heavy fraction, second step (1), crude oil (C), and third step (1) are the same.
  • a method for recovering an oil content in crude oil sludge by heating the crude oil sludge (A) at 40 to 200 ° C. to obtain a heat-treated product of the crude oil sludge (A); , A second step (2) for separating the light liquid and the heavy liquid by centrifuging the heat-treated product at 40 to 200 ° C. to obtain a light liquid;
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the crude oil sludge (A) is heated at 40 to 200 ° C. It is a process to obtain.
  • the crude oil sludge (A) according to the first step (2) is the same as the crude oil sludge (A) according to the first step (1).
  • the crude oil sludge (A) is heated at 40 to 200 ° C., preferably 50 to 150 ° C., more preferably 60 to 100 ° C. to obtain a heat treated product of the crude oil sludge (A).
  • the heating temperature is less than the above range, the oil content from the crude oil sludge (A) is insufficiently recovered.
  • the heating temperature exceeds the above range, the heating cost is increased and the economy is lost.
  • the method of heating the crude oil sludge (A) is not particularly limited, and examples thereof include a method of heating the crude oil sludge (A) in a tank in which the crude oil sludge (A) taken out from the crude oil tank is stored. .
  • the second step (2) according to the method for recovering oil in the crude sludge according to the second aspect of the present invention is a heat treatment product of the crude sludge (A) obtained by performing the first step (2).
  • the light liquid and the heavy component are separated by centrifugation at 200 ° C. to obtain a light liquid.
  • the temperature at which the heat-treated product of the crude oil sludge (A) is centrifuged is 40 to 200 ° C., preferably 50 to 150 ° C., more preferably 60 to 100 ° C. If the centrifugation temperature is less than the above range, part of the heat-treated product of the crude oil sludge (A) is solidified or the fluidity of the heat-treated product is greatly reduced during the centrifugation. When it becomes impossible and exceeds the above range, the heating cost becomes high, and the economy is lost.
  • the temperature at which the heat-treated product of the crude oil sludge (A) is centrifuged set to the same as the heating temperature of the crude oil sludge (A) in the first step (2)?
  • the temperature is higher than the heating temperature.
  • the heat-treated product of crude oil sludge (A) obtained by performing the first step (2) is a mixture of a light liquid having a small specific gravity and a heavy component having a specific gravity larger than that of the light liquid.
  • the specific gravity difference To separate the light and heavy components.
  • a light liquid is an oil component in crude oil sludge (A). That is, the light liquid basically consists of oil in the crude oil sludge (A).
  • the heavy component is a component in the crude oil sludge (A) having a specific gravity greater than that of the oil component due to heating in the first step (2), and is mainly entrapped in asphaltene, moisture, iron component, sand, and these components. Oils that are difficult to separate.
  • the centrifuge for centrifuging the heat-treated product is not particularly limited, and the light liquid and the heavy fraction are continuously mixed with the specific gravity while maintaining the above-mentioned centrifuge temperature. Any material that can be separated by the difference may be used. For example, a decanter type centrifuge, a disk separator type centrifuge, or a combination of these is available.
  • the physical properties of the light liquid obtained by performing the second step (2) are not particularly limited, but the density is preferably 0.80 to 0.95 g / cm 3 , more preferably 0.80 to 0.88 g / cm 3 .
  • the melting point is preferably 40 to 150 ° C., more preferably 40 to 110 ° C., still more preferably 40 to 90 ° C., and the freezing point is preferably 30 to 140 ° C., more preferably 30 to 100 ° C., and still more preferably 30 It is ⁇ 80 ° C. and the oil content is 60% by mass or more.
  • the light liquid obtained by performing the second step (2) is brought to a temperature higher than the melting point, In this process, the light liquid is mixed with the crude oil (C) in the crude oil transfer pipe.
  • the temperature of the light liquid is lower than the melting point, it becomes difficult to mix the light liquid with the crude oil (C) in the crude oil transfer pipe.
  • the third step (2) is different from the third step (1) in that the light liquid to be mixed with the crude oil (C) is different from the first step (2) and the second step (2) in the third step (2). It is the same except that it is the light liquid obtained by performing the 1st process (1) and the 2nd process (1) in the 3rd process (1) to the light liquid obtained.
  • the crude oil (C) in which the light liquid is mixed is not particularly limited, and may be crude oil before removing solids and moisture after crude oil mining and storing in the crude oil tank, Crude oil that has been solidly removed after being extracted and stored in a crude oil tank. It may be crude oil before crude oil sludge is generated, or it can be stored in the crude oil tank for a certain period. It may be the crude oil in the crude oil tank after the crude oil sludge is generated at the bottom. Crude oil (C) may be the same type of crude oil as the source of crude sludge (A) or a different type of crude oil.
  • the oil content in the crude oil sludge (A) is mainly hydrocarbons having a carbon number of 40 or more and a large molecular weight. Therefore, the temperature of the light liquid is lower than the temperature when heating is performed in the first step (2). If it becomes too much, the light liquid is solidified or the fluidity of the light liquid becomes extremely low.
  • the third step (2) the light liquid is brought to a temperature higher than the melting point, and the light liquid is mixed with the crude oil (C). .
  • the temperature of the light liquid is preferably a temperature not lower than the freezing point, and is in the range of 40 to 200 ° C., more preferably 50 to 150 ° C., and further preferably 60 to 100 ° C.
  • the temperature of the crude oil (C) and the light liquid when the crude liquid (C) is mixed with the light liquid is higher than the temperature of the light liquid. Or the temperature of the crude oil (C) is lower than the temperature of the light liquid and the difference between the temperature of the light liquid and the temperature of the crude oil (C) is within 40 ° C.
  • the temperature of the crude oil (C) is lower than the temperature of the light liquid, the smaller the difference between the temperature of the light liquid and the temperature of the crude oil (C), the more the crude oil (C) is mixed with the light liquid.
  • the oil component of the crude oil sludge (A) is suppressed or deposited finely even if it is deposited, making it difficult to cause sludge, so the difference between the temperature of the light liquid and the temperature of the crude oil (C) Is within 40 ° C, the precipitation of the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed, or even if it is precipitated, it is finely precipitated and is less likely to cause sludge. Play.
  • the difference between the temperature of the light liquid and the temperature of the crude oil (C) is preferably within 30 ° C, more preferably within 20 ° C, and even more preferably 10 ° C. If it is within the range, precipitation of the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed or even if it is precipitated, the effect of being finely precipitated and hardly causing sludge is enhanced.
  • the temperature of the crude oil (C) when the temperature of the crude oil (C) is equal to or higher than the temperature of the light liquid, when the light liquid is mixed with the crude oil (C), the oil content of the crude oil sludge (A) in the crude oil (C) Even if precipitation is suppressed, or even if it is precipitated, it is finely deposited and is unlikely to cause sludge. If the temperature of the crude oil (C) is higher than the temperature of the light liquid, the crude oil (C) When the liquid is mixed, the oil content of the crude oil sludge (A) in the crude oil (C) is suppressed or even if it is precipitated, the oil is finely precipitated and is less likely to cause sludge. .
  • the difference between the temperature of the crude oil (C) and the temperature of the light liquid is preferably within 10 ° C, more preferably within 5 ° C.
  • the temperature of the crude oil (C) flowing in the crude oil transfer pipe satisfies the relationship between the temperature of the crude oil (C) and the temperature of the light liquid, but if the temperature of the crude oil (C) is too high Since disadvantages due to loss of light fractions occur, the temperature of the crude oil (C) is preferably 60 ° C. or less, and more preferably 50 ° C. or less.
  • the light liquid is mixed with the crude oil (C) by mixing the light liquid with the crude oil (C) in the crude oil transfer pipe. That is, the light liquid is mixed with the crude oil (C) that is flowing through the crude oil transfer pipe.
  • the oil component of the crude oil sludge (A) precipitated in the crude oil (C) is agglomerated. Since the oil content of the crude oil sludge (A) can be quickly dispersed in the crude oil (C), sludge can be made difficult to occur in the crude oil (C).
  • the amount of light liquid mixed with the crude oil (C) is preferably 45 parts by volume or less, more preferably 2 to 15 parts by volume with respect to 100 parts by volume of the crude oil (C).
  • the amount of light liquid mixed with crude oil (C) is in the above range, sludge is less likely to occur in crude oil (C).
  • the linear velocity of the crude oil (C) flowing in the crude oil transfer pipe is preferably 1 cm / second or more, more preferably 4 cm / second or more, and further preferably 6 cm / second or more. Since the linear velocity of the crude oil (C) flowing in the crude oil transfer pipe is in the above range, the oil content of the crude oil sludge (A) precipitated in the crude oil (C) is easily dispersed. It becomes difficult to occur. There is no upper limit for the linear velocity of crude oil (C) flowing in the crude oil transfer pipe, but the linear velocity of crude oil in the normal crude oil transfer pipe is often 500 cm / second or less.
  • the crude oil (E) of the present invention comprises a first step (2) in which the crude oil sludge (A) is heated at 40 to 200 ° C. to obtain a heat-treated product of the crude oil sludge (A); A second step (2) for separating the light liquid and the heavy liquid by centrifuging the heat-treated product at 40 to 200 ° C. to obtain a light liquid;
  • the temperature of the light liquid is set to a temperature equal to or higher than the melting point, and the light liquid having a temperature equal to or higher than the melting point is mixed with the crude oil (C) in the crude oil transfer pipe.
  • It is a crude oil that can be obtained.
  • Crude oil sludge (A) according to the present invention E
  • third Step (2) includes crude oil sludge (A), a heat-treated product of crude oil sludge (A), a first treatment (2), centrifugation, It is the same as the light liquid, the heavy component, the second step (2), and the third step (2).
  • the crude oil (D) of the present invention was obtained by performing the first step (1), the second step (1), and the third step (1), when stored in the crude oil tank, Crude oil sludge is unlikely to occur.
  • the crude oil (E) of the present invention was obtained by performing the first step (2), the second step (2), and the third step (2), when stored in the crude oil tank In addition, crude oil sludge is unlikely to occur.
  • the first step (1) and the second step (1) are performed, and the oil in the crude sludge (A) is dissolved in the crude oil (B).
  • the crude oil (B) in which the light liquid, that is, the oil component in the crude oil sludge (A) is dissolved is separated from the heavy component, ie, the components other than the oil component in the crude oil sludge (A) by centrifugation.
  • the oil component can be recovered from the crude oil sludge (A).
  • the first step (2) and the second step (2) are performed, and the oil in the crude sludge (A) is centrifuged.
  • the oil component can be recovered from the crude oil sludge (A) as a light liquid by separating it from the heavy component, that is, the components other than the oil component in the crude oil sludge (A).
  • the second process (1) or the second process When the light liquid obtained in (2) is returned directly to the crude oil tank, the light liquid comes into contact with the crude oil in the crude oil tank, and at the same time, the oil in the crude oil sludge (A) dissolved in the light liquid is solid. It precipitates and a large precipitate is formed, so that it becomes sludge again.
  • the third step (1) or the third step (2) is performed, that is, the light liquid is brought to a temperature higher than the melting point and higher than the temperature of the light liquid.
  • Crude oil sludge (A) in crude oil (C) by mixing it with crude oil (C) or a crude oil (C) that is lower than the temperature of light liquid and within 40 ° C. Even if the oil content of the oil is suppressed or precipitated, it will be finely precipitated, making it difficult to cause sludge, and mixing the light liquid with the crude oil (C) while the crude oil (C) is flowing.
  • the oil content in the crude oil sludge (A) can be dispersed in the crude oil (C) before the oil content of the crude oil sludge (A) precipitated in the crude oil (C) is agglomerated. May make it difficult for sludge to become sludge in crude oil (C). Kill.
  • ⁇ Crude oil sludge (A)> Crude oil sludge recovered from crude oil tank a Analytical values: oil content 75.1% by mass, asphaltene content 10.3% by mass, moisture 11.0% by mass, sediment content 3.6% by mass ⁇ Crude oil (B)> Crude oil b with the following analytical value API 30.3 °, water mud content 0% by volume ⁇ Crude oil (C)> The crude oil b was used as crude oil (C).
  • Example 1 Crude oil sludge a and crude oil b were added to a stirring vessel so that the ratio of crude oil sludge a to the total was 70% by mass, and the mixture was heated and stirred at 80 ° C. Next, while maintaining the temperature at 80 ° C., the heat-stirred product was put into a centrifuge set at 80 ° C. and centrifuged at 80 ° C., 1000 G for 1 minute. Subsequently, the light liquid was separated by decantation to obtain a light liquid. The analysis values of the obtained light liquid are shown in Table 1.
  • the light liquid heated at 80 degreeC was mixed with the 50 degreeC crude oil b currently flowing at each linear velocity shown in Table 1 in each ratio shown in Table 1, and the mixture (mixed sample) was obtained.
  • the mixing method is as shown in FIG.
  • the obtained mixture was allowed to stand at 35 ° C. for 5 days, and the amount of accumulated sludge, the API of crude oil excluding the sludge, and the water mud content were measured. The results are shown in Table 1.
  • ⁇ Measurement method of accumulated sludge amount> A 100 mL sample was placed in a 100 mL centrifuge tube and allowed to stand at 35 ° C. for 5 days. Next, the centrifuge tube was tilted, the supernatant was discarded over 15 seconds, and the centrifuge tube was turned upside down and allowed to stand for 30 seconds. Next, the centrifuge tube was returned to its original position and allowed to stand at 80 ° C. for 60 minutes, and the amount of sludge remaining in the centrifuge tube was measured.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Treatment Of Sludge (AREA)

Abstract

La présente invention concerne un procédé de récupération d'une fraction de pétrole dans une boue de pétrole brut, caractérisé en ce qu'il comporte : une première étape (1) de mélange d'une boue de pétrole brut (A) et de pétrole brut (B), puis le chauffage et l'agitation du mélange de la boue de pétrole brut (A) et du pétrole brut (B) pour obtenir un produit traité chauffé et agité constitué de la boue de pétrole brut (A) et du pétrole brut (B) ; une deuxième étape (1) pour séparer par centrifugation le produit traité chauffé et agité à 40 à 200 °C de manière à séparer le liquide léger de la fraction lourde et obtenir un liquide léger ; et une troisième étape (1) pour amener la température du liquide léger à la température de point de fusion ou plus et mélanger le liquide léger, qui est égale ou supérieure à la température de point de fusion, avec du pétrole brut (C) dans un tube de transfert de pétrole brut, la température du pétrole brut (C) étant égale ou supérieure à la température du liquide léger, en variante, la température du pétrole brut (C) étant inférieure à celle du liquide léger, et la différence entre la température du liquide léger et le pétrole brut (C) étant inférieure ou égale à 40 °C. La présente invention concerne un procédé de récupération d'une fraction de pétrole dans la boue de pétrole brut dans lequel de la boue est moins susceptible d'être générée même lorsque la fraction de pétrole récupérée à partir de la boue de pétrole brut est mélangée avec du pétrole brut.
PCT/JP2016/066584 2015-06-12 2016-06-03 Procédé de récupération d'une fraction de pétrole dans de la boue de pétrole brut, et pétrole brut WO2016199692A1 (fr)

Priority Applications (4)

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JP2016566294A JP6136042B2 (ja) 2015-06-12 2016-06-03 原油スラッジ中の油分の処理方法
CA2989100A CA2989100C (fr) 2015-06-12 2016-06-03 Methode de recuperation d'huile par chauffage, melange et centrifugationd'une boue de petrole brut
MX2017014228A MX2017014228A (es) 2015-06-12 2016-06-03 Metodo para recuperar fraccion de petroleo en sedimento fangoso de petroleo crudo y en petroleo crudo.
RU2017140086A RU2676325C1 (ru) 2015-06-12 2016-06-03 Способ извлечения нефтяной фракции из шлама сырой нефти и сырая нефть

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JP2015118872 2015-06-12

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CN107265799B (zh) * 2017-06-30 2023-11-17 南充西南石油大学设计研究院有限责任公司 含油固废物综合处理工艺及装置

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JP2005349240A (ja) * 2004-06-08 2005-12-22 Cosmo Oil Co Ltd スラッジ処理方法
JP2012229403A (ja) * 2011-04-14 2012-11-22 System Kikou Co Ltd 原油スラッジ中の油分回収装置
WO2013091032A1 (fr) * 2011-12-22 2013-06-27 Tomov Petko Ivanov Procédé pour le traitement de boues huileuses et de sédiments huileux

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EA200900200A1 (ru) * 2008-08-15 2009-08-28 Эдуард Маукенович Батырбаев Способ очистки загрязненного нефтью и/или нефтепродуктами грунта, выбуренной породы, нефтешламов или отработанных буровых растворов
RU2506303C1 (ru) * 2012-06-20 2014-02-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Самарский государственный технический университет Способ переработки нефтесодержащих шламов
RU2490305C1 (ru) * 2012-07-06 2013-08-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" Способ переработки устойчивых нефтяных эмульсий и застарелых нефтешламов

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JP2002338969A (ja) * 2001-02-20 2002-11-27 Sk Corp 原油タンク内のスラッジを除去し、除去したスラッジから油を回収する方法
JP2005349240A (ja) * 2004-06-08 2005-12-22 Cosmo Oil Co Ltd スラッジ処理方法
JP2012229403A (ja) * 2011-04-14 2012-11-22 System Kikou Co Ltd 原油スラッジ中の油分回収装置
WO2013091032A1 (fr) * 2011-12-22 2013-06-27 Tomov Petko Ivanov Procédé pour le traitement de boues huileuses et de sédiments huileux

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Publication number Priority date Publication date Assignee Title
CN110240465A (zh) * 2019-06-24 2019-09-17 北京正菱环保科技发展有限公司 一种用于废弃的废油泥环保治理方法

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RU2676325C1 (ru) 2018-12-28
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JPWO2016199692A1 (ja) 2017-06-22
MX2017014228A (es) 2018-04-20
CA2989100A1 (fr) 2016-12-15

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