CN112708443A - Catalytic slurry oil distillation tower and method for intensively washing catalytic slurry oil - Google Patents

Catalytic slurry oil distillation tower and method for intensively washing catalytic slurry oil Download PDF

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Publication number
CN112708443A
CN112708443A CN201911019596.9A CN201911019596A CN112708443A CN 112708443 A CN112708443 A CN 112708443A CN 201911019596 A CN201911019596 A CN 201911019596A CN 112708443 A CN112708443 A CN 112708443A
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washing
fine
section
catalytic slurry
rough
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CN201911019596.9A
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CN112708443B (en
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王秋萍
王亚彪
田野
袁毅夫
陈开辈
李出和
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Sinopec Engineering Inc
Sinopec Engineering Group Co Ltd
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Sinopec Engineering Inc
Sinopec Engineering Group Co Ltd
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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
    • C10G7/00—Distillation of hydrocarbon oils
    • C10G7/06—Vacuum distillation
    • 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
    • C10G7/00—Distillation of hydrocarbon oils
    • C10G7/006—Distillation of hydrocarbon oils of waste oils other than lubricating oils, e.g. PCB's containing oils
    • 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
    • C10G7/00—Distillation of hydrocarbon oils
    • C10G7/12—Controlling or regulating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (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)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

The invention belongs to the field of chemical industry, and particularly discloses a catalytic slurry oil distillation tower and a method for intensively washing catalytic slurry oil, wherein the catalytic slurry oil distillation tower comprises a stripping section, a feeding section, an intensive washing section and a rectifying section which are arranged in the tower from bottom to top, wherein the intensive washing section comprises a rough washing section and a plurality of fine washing sections which are arranged from bottom to top; the rough washing section comprises a rough washing inclined plate bed layer and a rough washing distributor arranged above the rough washing inclined plate bed layer; the fine washing section comprises a fine washing inclined plate bed layer, a fine washing distributor arranged above the fine washing inclined plate bed layer and a liquid collector arranged below the fine washing inclined plate bed layer; and a circulating washing pump is arranged outside the catalytic slurry oil distillation tower corresponding to each section of fine washing section, one end of the circulating washing pump is connected with the liquid collector and the optional circulating washing tank, and the other end of the circulating washing pump is respectively connected with the rough washing distributor and the fine washing distributor. The invention can reduce or avoid the phenomena of deposition, blockage and polymerization coking in the decompression tower and ensure the long-period stable operation of the decompression tower.

Description

Catalytic slurry oil distillation tower and method for intensively washing catalytic slurry oil
Technical Field
The invention belongs to the field of chemical industry, and particularly relates to a catalytic slurry oil distillation tower and a method for intensively washing catalytic slurry oil.
Background
The catalytic slurry oil is a byproduct of a catalytic cracking unit of a refinery, is rich in polycyclic aromatic hydrocarbons, and is a high-quality raw material for producing a certain high-end carbon material. However, the catalytic slurry oil has high contents of sulfur, ash, solid catalyst powder, asphaltene, colloid and the like, so that the catalytic slurry oil has the characteristics of high viscosity, poor fluidity, high surface tension, easy coking and easy blockage caused by deposition during processing, and the catalyst solid particles contained in the catalytic slurry oil also bring a remarkable abrasion problem for subsequent processing production. Therefore, at present, no mature and economic catalytic oil slurry deep processing means exists.
The catalytic slurry oil is processed by reduced pressure distillation to extract polycyclic aromatic hydrocarbon components in the catalytic slurry oil for producing the high-end carbon material, and the method is a simple and feasible production process, but the process is not developed because solid particles in the catalytic slurry oil are easy to be entrained to pollute target products under the vacuum condition, and internal parts of a vacuum tower are easy to deposit, coke, block and the like under the high-temperature condition. How to arrange a tower section in the decompression tower for effective washing and strengthening to solve the problems is the key point of the research of the invention.
The difficulty of strengthening the washing section lies in realizing the washing effect, effectively removing coke, asphaltene and catalyst dust in the light oil slurry produced by reduced pressure distillation to meet the requirements of the subsequent production process on raw materials, and simultaneously preventing coking or catalyst dust deposition in the bed layer of the washing section from causing blockage, thereby losing the washing effect, even the device can not normally produce and operate, and the concrete performance is as follows:
1. the particle size of the catalyst powder in the catalytic slurry is generally between 0.1 and 100 mu m, the volume median particle size is between 3 and 4 mu m, and the calculated settling velocity is 10-6～10-7m/s, such a settling velocity does not allow to pass the superficial gas velocity (generally 10)0～101m/s) method is adopted to reduce the catalyst dust content in the light oil slurry, and special measures are required;
2. the colloid content of the fed catalytic slurry oil is about 15 percent, the asphaltene content is about 5 percent, and the temperature for processing the catalytic slurry oil is about 390 ℃, under the conditions, the retention time of the material in a high-temperature area must be reduced as much as possible, so that the long-period operation of the device is prevented from being influenced by the coking phenomenon caused by polymerization of the material in the equipment;
3. the solid content of the catalytic slurry oil is high, deposition and even blockage are easy to occur in the processing process, and deposited solid particles can provide condensation nuclei for coking, so that the coking is caused quickly.
Based on the method, in order to complete the deep processing of the catalytic slurry oil, a method which is suitable for the catalytic slurry oil in a distillation tower and is used for reducing the solid particle content of the catalyst and avoiding the deposition of the catalyst is developed, and meanwhile, the method is very important for ensuring that the coking phenomenon does not occur in the implementation process.
Disclosure of Invention
The invention aims to provide a distillation tower enhanced washing method for catalytic slurry oil, which is used for enhancing the washing section of a vacuum tower, solving the problems of deposition, coking and blockage of the washing section and realizing good washing effect on solid particles of a catalyst, thereby ensuring long-period stable production of a catalytic slurry oil vacuum distillation process.
In order to achieve the above object, the present invention provides a catalytic slurry oil distillation tower, comprising a stripping section, a feeding section, an intensive washing section and a rectifying section arranged from bottom to top in the tower,
wherein the reinforced washing section comprises a rough washing section and a plurality of fine washing sections which are arranged from bottom to top;
the rough washing section comprises a rough washing inclined plate bed layer and a rough washing distributor arranged above the rough washing inclined plate bed layer;
the fine washing section comprises a fine washing inclined plate bed layer, a fine washing distributor arranged above the fine washing inclined plate bed layer and a liquid collector arranged below the fine washing inclined plate bed layer;
and a circulating washing pump is arranged outside the catalytic slurry oil distillation tower corresponding to each section of fine washing section, one end of the circulating washing pump is connected with the liquid collector and the optional circulating washing tank, and the other end of the circulating washing pump is respectively connected with the rough washing distributor and the fine washing distributor.
Wherein, the rough washing section is used for washing large-diameter solid particles and dust in the ascending gas of the feeding section, reducing the content of corresponding impurities in the ascending gas and causing damage to internal parts; the fine washing section is used for washing small-diameter solid particles and dust in the rising gas of the coarse washing section, reducing the content of corresponding impurities in the rising gas and ensuring that the content of the impurities in a side line product meets the requirement.
In the invention, because the interior of the inclined plate is not considered for maintenance, and the inclined plates of the fine washing section and the rough washing section are considered as beds, in order to further ensure the cleaning efficiency, the rough washing inclined plate bed preferably comprises at least 3 layers of inclined plates, and the fine washing inclined plate bed comprises at least 6 layers of inclined plates.
The inclined plate has no special requirement, and the inclined plate can be selected by a person skilled in the art according to the conventional technology, and can be specifically selected to be herringbone baffles of different types.
In order to reduce the retention time of materials in the liquid collector as much as possible and prevent the occurrence of polymerization coking, the circulating washing tank is preferably arranged outside the catalytic oil slurry distillation tower, the top of the circulating washing tank is connected with the lower part of the fine washing inclined plate bed layer, and the bottom of the circulating washing tank is connected with the coarse washing distributor and the fine washing distributor respectively after being connected with the circulating washing pump.
According to the invention, preferably, the liquid collector is provided with a level gauge.
In another aspect, the present invention provides a method for enhanced washing of catalytic slurry oil, which is performed in the above catalytic slurry oil distillation tower, and comprises:
after the catalytic slurry oil enters a feeding section of a catalytic slurry oil distillation tower, the gas-phase material rises to sequentially pass through a rough washing section and a fine washing section, and is in reverse contact with washing oil in the rough washing section and the fine washing section to wash solid particles and dust in the gas-phase material, and the washed gas-phase material rises to a rectifying section to be rectified continuously;
wherein, the washing oil is collected by a liquid collector of the fine washing section, is optionally collected by a circulating washing tank, is pumped out by a circulating washing pump, is respectively sent to a rough washing distributor and a fine washing distributor for homogenization distribution, and then is in reverse contact with the rising gas-phase material.
In the invention, in order to ensure the washing effect, preferably, the flow of the washing oil is controlled by a single loop, the washing oil amount of the fine washing section is adjusted along with the solid particle and dust content of the catalytic slurry oil in the fine washing section, and the washing oil amount of the rough washing section is consistent with the over-vaporized oil amount of the distillation tower.
According to the invention, the operation temperature of the rough washing section is preferably no more than 390 ℃, and the total pressure drop of the rough washing section and the fine washing section is no more than 10 mmHg.
According to the invention, preferably, the gas phase at the top of the circulating washing tank is sent to the lower part of the fine washing inclined plate bed layer, and the liquid phase at the bottom of the circulating washing tank is respectively sent to the rough washing distributor and the fine washing distributor.
Compared with the prior art, the invention has the following advantages:
(1) the invention washes catalytic slurry containing impurities such as dust, solid catalyst particles and the like to a high-solid-content system by a washing instead of settling method, thereby preventing the catalyst particles from being carried to a target product by ascending gas in the processing process to influence the product quality, the deposition of the catalyst particles, the coking and the blockage of materials in equipment and the like.
(2) The invention sets multi-stage washing, and adopts the inclined plate instead of the packing bed layer as an inner member, thereby strengthening the washing effect, reducing the retention time of materials, avoiding particle deposition, reducing or avoiding the phenomena of blockage and polymerization coking in the pressure reduction tower, ensuring that a side line product meets the quality requirement, and ensuring the long-period stable operation of the pressure reduction tower. Wherein, the rough washing section is used for washing large-diameter solid particles and dust in the ascending gas of the feeding section, reducing the content of corresponding impurities in the ascending gas and the damage effect on the internal parts caused by the content of the solid particles (the ascending gas has higher gas velocity, and the back washing and the impact on the internal parts are aggravated by the solid particles, so the structure of the internal parts is damaged); the fine washing section is used for washing small-diameter solid particles and dust in the rising gas of the coarse washing section, reducing the content of corresponding impurities in the rising gas and ensuring that the content of the impurities in a side line product meets the requirement.
(3) In order to further reduce the retention time of materials in the tower and prevent the occurrence of polymerization coking, the invention is also matched with a circulating washing tank, so that the washing oil can be timely extracted from the liquid collector.
(4) In order to further improve the washing effect, the invention adopts the setting that the circulating washing oil quantity of the fine washing section can be adjusted according to the requirement so as to adapt to the change of the particle content in the feeding material.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 shows a schematic diagram of an enhanced wash section of a catalytic slurry distillation column in an embodiment of the present invention.
FIG. 2 shows a schematic diagram of an enhanced wash section of a catalytic slurry distillation column in an embodiment of the present invention.
FIG. 3 shows a schematic diagram of an enhanced wash section of a catalytic slurry distillation column with a recycle wash tank in an embodiment of the invention.
Description of reference numerals:
a-a catalytic slurry oil distillation column; b-a circulating washing pump; c-a circulating washing tank; j-a fine washing distributor; k-fine washing the inclined plate bed layer; l-a liquid collector; m-rough washing distributor; n-rough washing the inclined plate bed layer;
i-fine washing section; II, a rough washing section; III-a feeding section; f-flow rate; an L-level gauge; a V-flow control valve.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.
Example 1
A catalytic slurry oil distillation tower a comprises a stripping section, a feeding section III, an intensified washing section (shown in figure 1) and a rectifying section which are arranged from bottom to top in the tower,
wherein the reinforced washing section (as shown in figure 1-2) comprises a rough washing section II and a plurality of fine washing sections I which are arranged from bottom to top,
the rough washing section II comprises a rough washing inclined plate bed layer n and a rough washing distributor m arranged above the rough washing inclined plate bed layer n; the coarse washing inclined plate bed layer n comprises 3 layers of inclined plates,
the fine washing section I comprises a fine washing inclined plate bed layer k, a fine washing distributor j arranged above the fine washing inclined plate bed layer k and a liquid collector l arranged below the fine washing inclined plate bed layer k; the fine washing inclined plate bed layer k comprises 6 layers of inclined plates, and the liquid collector L is provided with a liquid level meter L;
and a circulating washing pump b is arranged outside the catalytic slurry oil distillation tower a corresponding to the fine washing section I, one end of the circulating washing pump b is connected with the liquid collector l, and the other end of the circulating washing pump b is respectively connected with the rough washing distributor m and the fine washing distributor j.
The catalytic slurry oil distillation tower is utilized for carrying out catalytic slurry oil reinforced washing, and the method specifically comprises the following steps:
the catalytic slurry oil enters a feeding section III of the catalytic slurry oil distillation tower, the gas-phase material ascends to sequentially pass through a rough washing section II and a fine washing section I and reversely contact with washing oil in the rough washing section II and the fine washing section I to wash solid particles and dust in the gas-phase material, and the washed gas-phase material ascends to a rectifying section to be rectified continuously;
wherein, the washing oil is collected by a liquid collector l of a fine washing section I and is pumped out by a circulating washing pump b to be divided into two paths, the two paths of washing oil are controlled by a single loop and are respectively sent to a rough washing distributor m and a fine washing distributor j for homogenization distribution, and then are in reverse contact with the rising gas-phase material; the washing oil quantity of the fine washing section I is adjusted along with the solid particle and dust content of the catalytic slurry oil in the fine washing section I, the washing oil quantities of two sections of circulations are controlled by a flow control valve V, the washing oil quantity of the rough washing section II is consistent with the over-vaporized oil quantity of the catalytic slurry oil distillation tower, the operation temperature of the rough washing section II is not more than 390 ℃, and the total pressure drop of the rough washing section II and the fine washing section I is not more than 10 mmHg.
Example 2
A catalytic slurry oil distillation tower a comprises a stripping section, a feeding section III, an intensified washing section (shown in figure 1) and a rectifying section which are arranged from bottom to top in the tower,
wherein the reinforced washing section (as shown in figures 1-3) comprises a rough washing section II and a plurality of fine washing sections I arranged from bottom to top,
the rough washing section II comprises a rough washing inclined plate bed layer n and a rough washing distributor m arranged above the rough washing inclined plate bed layer n; the coarse washing inclined plate bed layer n comprises 3 layers of inclined plates,
the fine washing section I comprises a fine washing inclined plate bed layer k, a fine washing distributor j arranged above the fine washing inclined plate bed layer k and a liquid collector l arranged below the fine washing inclined plate bed layer k; the fine washing inclined plate bed layer k comprises 6 layers of inclined plates, and the liquid collector L is provided with a liquid level meter L;
a circulating washing pump b and a circulating pump washing tank c are arranged outside a catalytic slurry oil distillation tower a corresponding to the fine washing section I, a liquid collector l is connected with the circulating washing tank c, the bottom of the circulating washing tank c is connected with the circulating washing pump b and then respectively connected with a coarse washing distributor m and a fine washing distributor j, and the top of the tank is connected with the lower part of a fine washing inclined plate bed layer k.
The catalytic slurry oil distillation tower is utilized for carrying out catalytic slurry oil reinforced washing, and the method specifically comprises the following steps:
the catalytic slurry oil enters a feeding section III of the catalytic slurry oil distillation tower, the gas-phase material ascends to sequentially pass through a rough washing section II and a fine washing section I and reversely contact with washing oil in the rough washing section II and the fine washing section I to wash solid particles and dust in the gas-phase material, and the washed gas-phase material ascends to a rectifying section to be rectified continuously;
wherein, the washing oil is collected by a liquid collector l of a fine washing section, the washing oil automatically flows into a circulating washing tank c, the gas phase at the top of the circulating washing tank c is sent to the lower part of a fine washing inclined plate bed layer k, the washing oil at the bottom of the tank is pumped out by a circulating washing pump b and divided into two paths, the two paths of washing oil are controlled by a single loop and respectively sent to a coarse washing distributor m and a fine washing distributor j for homogenization distribution, and then the washing oil is in reverse contact with the ascending gas phase material; the washing oil quantity of the fine washing section I is adjusted along with the solid particle and dust content of the catalytic slurry oil in the fine washing section I, the washing oil quantity of the rough washing section II is consistent with the over-vaporized oil quantity of the catalytic slurry oil distillation tower, the washing oil quantities of the two sections of circulation are controlled by a flow control valve V, the operation temperature of the rough washing section II is not more than 390 ℃, and the total pressure drop of the rough washing section II and the fine washing section I is not more than 10 mmHg.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims (10)

1. A catalytic slurry oil distillation tower is characterized in that the catalytic slurry oil distillation tower comprises a stripping section, a feeding section, an intensified washing section and a rectifying section which are arranged in the tower from bottom to top,
wherein the reinforced washing section comprises a rough washing section and a plurality of fine washing sections which are arranged from bottom to top;
the rough washing section comprises a rough washing inclined plate bed layer and a rough washing distributor arranged above the rough washing inclined plate bed layer;
the fine washing section comprises a fine washing inclined plate bed layer, a fine washing distributor arranged above the fine washing inclined plate bed layer and a liquid collector arranged below the fine washing inclined plate bed layer;
and a circulating washing pump is arranged outside the catalytic slurry oil distillation tower corresponding to each section of fine washing section, one end of the circulating washing pump is connected with the liquid collector and the optional circulating washing tank, and the other end of the circulating washing pump is respectively connected with the rough washing distributor and the fine washing distributor.
2. The catalytic slurry distillation column of claim 1 wherein the coarse-wash inclined plate bed comprises at least 3 inclined plates and the fine-wash inclined plate bed comprises at least 6 inclined plates.
3. The catalytic slurry distillation column of claim 2 wherein the inclined plates are chevron baffles.
4. The catalytic slurry oil distillation tower of claim 1 wherein the circulating wash tank is disposed outside the catalytic slurry oil distillation tower, the top of the circulating wash tank is connected to the bottom of the fine wash inclined plate bed, and the bottom of the circulating wash tank is connected to the coarse wash distributor and the fine wash distributor after being connected to a circulating wash pump.
5. The catalytic slurry distillation column of claim 1 wherein the liquid collector is provided with a level gauge.
6. A method for enhanced washing of a catalytic slurry oil in a catalytic slurry oil distillation column as claimed in any one of claims 1 to 5, the method comprising:
after the catalytic slurry oil enters a feeding section of a catalytic slurry oil distillation tower, the gas-phase material rises to sequentially pass through a rough washing section and a fine washing section, and is in reverse contact with washing oil in the rough washing section and the fine washing section to wash solid particles and dust in the gas-phase material, and the washed gas-phase material rises to a rectifying section to be rectified continuously;
wherein, the washing oil is collected by a liquid collector of the fine washing section, is optionally collected by a circulating washing tank, is pumped out by a circulating washing pump, is respectively sent to a rough washing distributor and a fine washing distributor for homogenization distribution, and then is in reverse contact with the rising gas-phase material.
7. The process of claim 6, wherein the operating temperature of the rough washing section does not exceed 390 ℃, and the total pressure drop of the rough washing section and the fine washing section does not exceed 10 mmHg.
8. The method as claimed in claim 6, wherein the amount of scrubbing oil in the fine washing stage is adjusted in accordance with the solid particle and dust content of the catalytic slurry oil in the fine washing stage, and the amount of scrubbing oil in the coarse washing stage is in accordance with the amount of pervaporation oil in the catalytic slurry oil distillation column.
9. The process of claim 6 wherein the recycle wash tank overhead gas phase is fed below the fine wash inclined plate bed and tank bottoms liquid phase is fed to the coarse wash distributor and the fine wash distributor, respectively.
10. The method of claim 6, wherein the flow of the wash oil is controlled using a single loop.
CN201911019596.9A 2019-10-24 2019-10-24 Catalytic slurry oil distillation tower and method for intensively washing catalytic slurry oil Active CN112708443B (en)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
US5076910A (en) * 1990-09-28 1991-12-31 Phillips Petroleum Company Removal of particulate solids from a hot hydrocarbon slurry oil
CN1287872A (en) * 1999-09-15 2001-03-21 上海石油化工股份有限公司 Crude oil atmospheric vacuum distillation method with deep stripping process
CN203923103U (en) * 2014-06-24 2014-11-05 博英睿科(北京)科技有限公司 A kind of delayed coking washing device with many washing sections
CN207793179U (en) * 2018-01-23 2018-08-31 中国海洋石油集团有限公司 The processing unit of catalytic slurry

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076910A (en) * 1990-09-28 1991-12-31 Phillips Petroleum Company Removal of particulate solids from a hot hydrocarbon slurry oil
CN1287872A (en) * 1999-09-15 2001-03-21 上海石油化工股份有限公司 Crude oil atmospheric vacuum distillation method with deep stripping process
CN203923103U (en) * 2014-06-24 2014-11-05 博英睿科(北京)科技有限公司 A kind of delayed coking washing device with many washing sections
CN207793179U (en) * 2018-01-23 2018-08-31 中国海洋石油集团有限公司 The processing unit of catalytic slurry

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
滕滨强等: "人字挡板在催化分馏塔中的应用", 《浙江化工》 *

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