CN111363584A - Catalytic cracking slurry oil industrialized solid removal purification device and method - Google Patents
Catalytic cracking slurry oil industrialized solid removal purification device and method Download PDFInfo
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- CN111363584A CN111363584A CN202010278509.8A CN202010278509A CN111363584A CN 111363584 A CN111363584 A CN 111363584A CN 202010278509 A CN202010278509 A CN 202010278509A CN 111363584 A CN111363584 A CN 111363584A
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- 239000002002 slurry Substances 0.000 title claims abstract description 136
- 238000000746 purification Methods 0.000 title claims abstract description 122
- 238000004523 catalytic cracking Methods 0.000 title claims abstract description 85
- 239000007787 solid Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 67
- 239000012528 membrane Substances 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 40
- 230000004087 circulation Effects 0.000 claims description 55
- 239000012459 cleaning agent Substances 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 20
- 238000003860 storage Methods 0.000 claims description 12
- 239000012141 concentrate Substances 0.000 claims description 6
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000008023 solidification Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 117
- 238000001914 filtration Methods 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 239000011593 sulfur Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 238000005374 membrane filtration Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000010762 marine fuel oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010747 number 6 fuel oil Substances 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
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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
- C10G31/00—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for
- C10G31/09—Refining of hydrocarbon oils, in the absence of hydrogen, by methods not otherwise provided for by filtration
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a catalytic cracking slurry oil industrialized solid removal purification device and a method, which comprises a feeding pipeline, a slurry oil circulating pump, a purification pipeline, a special membrane filter, a purified liquid pipeline and a concentrated liquid pipeline, and also comprises a circulating pipeline, a cleaning pipeline and a pressure stabilizing pipeline.
Description
Technical Field
The invention relates to the technical field of catalytic cracking slurry oil treatment equipment, in particular to a catalytic cracking slurry oil industrialized solid removal purification device and a catalytic cracking slurry oil industrialized solid removal purification method.
Background
At present, the utilization of catalytic cracking slurry oil mainly focuses on two aspects: firstly, directly using catalytic cracking slurry oil as a raw material to combine with other refining processes to form a combined process; and secondly, separating the heavy oil catalytic cracking slurry oil to remove catalyst particles, using the separated heavy oil catalytic cracking slurry oil as a raw material for blending heavy bunker fuel oil, and further processing the heavy bunker fuel oil to produce high-quality high-value products such as petroleum coke, carbon black, carbon fiber materials and the like. However, the catalytic cracking slurry oil contains a large amount of solid impurities (mainly comprising catalyst particles and colloid and asphaltene attached to the catalyst), which bring serious adverse effects to the utilization and subsequent processing of the catalytic slurry oil, and cannot meet the requirements of subsequent comprehensive utilization and deep processing on the content of the solid particles, thereby hindering the utilization of the slurry oil.
According to the regulations of International Maritime Organization (IMO) international convention on preventing pollution caused by ships, from 1 month and 1 day of 2020, ships in the world must use marine fuel with the sulfur content of not higher than 0.5%, the sulfur content is reduced from 3.5% to 0.5%, the sulfur content is reduced by 86%, and huge changes are brought to the global marine oil market, and opportunities and challenges are brought to oil refining enterprises. China petrochemical industry is more practicing the green low-carbon development strategy, and the low-sulfur heavy marine fuel oil with stable compliance and green economy is supplied to all ports in China coastal from 1 month and 1 day of 2020. At present, the output of petrochemical slurry oil in China is about 300 million tons/year, and the petrochemical slurry oil is used as a raw material for producing low-sulfur marine fuel oil, so that the production cost of low-sulfur marine fuel oil can be greatly reduced. However, the slurry oil must also be subjected to a de-solidification purification treatment to be used as a raw material of low-sulfur fuel oil.
The currently used processing technologies of catalytic cracking slurry oil are an electrostatic separation method, a natural sedimentation method, a centrifugal separation technology, a metal filter element filtration separation technology, an inorganic membrane filtration separation technology and the like, wherein the inorganic membrane filtration method is common, but certain defects exist in the existing equipment; firstly, the pipeline design is rigid, and the applicability of catalytic cracking slurry oil for different oil products is poor, so that the purification cost is often greatly increased, and the efficiency is low; secondly, when cleaning the pipeline, the equipment often needs to be shut down, which causes the oil slurry to stop flowing, and the cost is often increased when the equipment is restarted.
Disclosure of Invention
Aiming at the problems, the invention discloses a catalytic cracking slurry oil industrialized solid removal purification device and a method.
The specific technical scheme is as follows:
the utility model provides a catalytic cracking slurry oil industrialization takes off solid purifier, a serial communication port, including feed line, slurry oil circulating pump, purifying pipeline, special membrane filter, purifying liquid pipeline and concentrate pipeline, the last feeding control valve that is equipped with of feed line, the first pipeline of its end intercommunication, the slurry oil circulating pump sets up in the feed line middle part, first pipeline and purifying pipeline intercommunication, purifying pipeline's quantity is mostly the group, and parallelly connected the setting between first pipeline and second pipeline, and the last series connection of purifying pipeline is equipped with a plurality of special membrane filters, special membrane filter's the purifying liquid export and purifying liquid pipeline intercommunication, second pipeline and concentrate pipeline intercommunication, establish the bleeder valve on the concentrate pipeline.
The catalytic cracking slurry oil industrialized solid removal purification device is characterized in that the second pipeline is communicated with the feeding pipeline through a circulating pipeline, and a circulating control valve is arranged on the circulating pipeline.
The catalytic cracking slurry oil industrialized solid removal purification device is characterized in that the first pipeline is communicated with the second pipeline through a third pipeline, a first valve is arranged on the third pipeline, a fourth pipeline is arranged among a plurality of special membrane filters connected in series through the purification pipelines, two ends of the fourth pipeline are respectively communicated with the purification pipelines and the circulation pipeline, and the fourth pipeline is provided with a parallel control valve.
Foretell catalytic cracking slurry oil industrialization takes off solid purifier, wherein, set up the washing pipeline between first pipeline and the second pipeline, be provided with cleaner storage jar, washing circulating pump and washing control valve on the washing pipeline, set up the second valve between feed line and the first pipeline.
The catalytic cracking slurry oil industrialized solid removal purification device is characterized in that a pressure stabilizing pipeline is communicated between the feeding pipeline and the circulating pipeline, pressure stabilizing control valves are arranged at two ends of the pressure stabilizing pipeline, and an intermediate tank is arranged in the middle of the pressure stabilizing pipeline.
A purification method of a catalytic cracking slurry oil industrialized solid removal purification device is characterized by comprising a large parallel purification mode, a small parallel purification mode and a cleaning mode;
(1) the large parallel purification mode comprises the following steps: the feeding pipeline, the first pipeline, the purification pipeline, the second pipeline and the concentrated solution pipeline are sequentially communicated, the purification solution pipeline is in an access state, the parallel control valve and the cleaning control valve are closed, and the second pipeline and the cleaning pipeline are in a closed state;
the oil slurry circulating pump is started, the feeding pipeline conveys catalytic cracking oil slurry to the de-solid purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines arranged in parallel through a first pipeline and sequentially passes through a plurality of special membrane filters arranged in series, the filtered purified oil slurry is discharged from the purification liquid pipeline, and the residual high-impurity sump oil is discharged from the concentrated liquid pipeline;
cyclic purification in a large parallel purification mode: when a large parallel purification mode is carried out, the discharge valve is closed, the circulation control valve is opened, at the moment, the concentrated solution pipeline is closed and the circulation pipeline is open, the high-impurity dirty oil filtered by the special membrane filter returns to the feeding pipeline from the circulation pipeline and enters the special membrane filter again along with a small amount of newly injected catalytic cracking oil slurry, the circulation purification is carried out, the oil slurry circulation time can be set, when the oil slurry circulation time is cut off, the discharge valve is automatically opened, the circulation control valve is automatically closed, the concentrated solution pipeline is open-circuited and the circulation pipeline is closed, and the high-impurity dirty oil in the de-solid purification device is discharged from the concentrated solution pipeline;
(2) the small parallel purification mode is as follows: on the basis of a large parallel connection purification mode, opening a first valve, a parallel connection control valve, a third pipeline and a fourth pipeline passage;
the oil slurry circulating pump is started, the feeding pipe conveys catalytic cracking oil slurry to the de-solid purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines arranged in parallel through a first pipeline, meanwhile, the filtered purified oil slurry is discharged from the purification liquid pipeline through a plurality of special membrane filters arranged in parallel in the purification pipelines, and the residual high-impurity sump oil is discharged from the concentrated liquid pipeline;
cyclic purification in small parallel purification mode: when the small parallel purification mode is carried out, the discharge valve is closed, the circulation control valve is opened, at the moment, the concentrated solution pipeline is closed and the circulation pipeline is open, the high-impurity dirty oil filtered by the special membrane filter returns to the feeding pipeline from the circulation pipeline and enters the special membrane filter again along with a small amount of newly injected catalytic cracking oil slurry, the circulation purification is carried out, the oil slurry circulation time can be set, when the oil slurry circulation time is cut off, the discharge valve is automatically opened, the circulation control valve is automatically closed, the concentrated solution pipeline is open-circuited and the circulation pipeline is closed, and the high-impurity dirty oil in the de-solid purification device is discharged from the concentrated solution pipeline;
(3) the cleaning mode is as follows: the second valve is closed, the feeding pipeline and the first pipeline are cut off, the cleaning control valve is opened, the pressure stabilizing control valve is opened, the circulating control valve is closed, the feeding pipeline, the pressure stabilizing pipeline and the circulating pipeline are communicated and circulated, and the first pipeline, the purifying pipeline, the circulating pipeline and the cleaning pipeline are communicated and circulated;
starting an oil slurry circulating pump, circulating catalytic cracking oil slurry among a feeding pipeline, a pressure stabilizing pipeline and a circulating pipeline, storing the catalytic cracking oil slurry with overloaded pipelines in a middle tank, starting a cleaning circulating pump, enabling a cleaning agent to flow out from a cleaning agent storage tank, and circulating among a cleaning pipeline, a first pipeline, a purifying pipeline and the circulating pipeline until the cleaning is finished;
after cleaning, cleaning the pipe wall of a cleaning control valve at the inlet end of a pipeline, opening a discharge valve, discharging cleaning agent waste liquid from a concentrated liquid pipeline, when the cleaning agent waste liquid is completely discharged, completely closing the cleaning control valve, closing a cleaning circulating pump, closing a cleaning pipeline, closing a pressure stabilizing control valve at the inlet end of the pressure stabilizing pipeline, opening a second valve, enabling catalytic cracking slurry oil to reenter a first pipeline for large parallel purification or small parallel purification, slowly supplementing the catalytic cracking slurry oil in an intermediate tank to a feeding pipeline through an oil pump in the intermediate tank until the catalytic cracking slurry oil in the intermediate tank is completely pumped out, at the moment, completely closing the pressure stabilizing control valve, and closing the pressure stabilizing pipeline.
The catalytic cracking slurry oil industrialized solidification removal purification device is characterized in that the feeding control valve, the discharge valve, the circulation control valve, the cleaning control valve, the second valve and the pressure stabilizing control valve are controlled to be opened and closed by a PLC.
According to the catalytic cracking slurry oil industrialized solid removal purification device, the slurry oil circulating pump and the cleaning circulating pump are controlled by the PLC.
The industrial solid purifier that takes off of catalytic cracking slurry oil, wherein, the fluid infusion mouth is established to cleaner storage jar upper end, and the evacuation mouth is established to the lower extreme, fluid infusion mouth and evacuation mouth department all are equipped with the valve.
The industrial solid removal and purification device for the catalytic cracking slurry oil is characterized in that the cleaning agent in the cleaning agent storage tank is replenished through a liquid replenishing port and is emptied through an emptying port.
The invention has the beneficial effects that:
the invention discloses a catalytic cracking slurry oil industrialized solid removal purification device and a method, which comprises a feeding pipeline, a slurry oil circulating pump, a purification pipeline, a special membrane filter, a purified liquid pipeline and a concentrated liquid pipeline, and also comprises a circulating pipeline, a cleaning pipeline and a pressure stabilizing pipeline.
Drawings
FIG. 1 is a schematic view of the present invention.
FIG. 2 is a diagram illustrating the present invention according to a first embodiment.
FIG. 3 is a diagram illustrating the present invention in a second embodiment.
FIG. 4 is a schematic view of the third embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention clearer and clearer, the present invention is further described below with reference to embodiments, and any solution obtained by substituting technical features of the technical solution of the present invention with equivalents and performing conventional reasoning falls within the scope of the present invention.
Example one
The catalytic cracking slurry oil industrialized solid removal purification device comprises a feeding pipeline 1, a slurry oil circulating pump 2, a purification pipeline 3, special membrane filters 4, a purification liquid pipeline 5 and a concentrated liquid pipeline 6, wherein a feeding control valve 7 is arranged on the feeding pipeline 1, the tail end of the feeding pipeline is communicated with a first pipeline 8, the slurry oil circulating pump 2 is arranged in the middle of the feeding pipeline 1, the first pipeline 8 is communicated with the purification pipeline 3, most of the purification pipelines 3 are arranged in groups and are arranged between the first pipeline 8 and a second pipeline 9 in parallel, the purification pipeline 3 is provided with a plurality of special membrane filters 4 in series, a purified liquid outlet of each special membrane filter 4 is communicated with the purification liquid pipeline 5, the second pipeline 9 is communicated with the concentrated liquid pipeline 6, and the concentrated liquid pipeline 6 is provided with a discharge valve 10;
the embodiment is used for separating and purifying the oil slurry by a membrane filtration method of the catalytic cracking oil slurry, the catalytic cracking oil slurry is conveyed by an oil slurry circulating pump and enters a special membrane filter for membrane filtration to obtain the purified oil slurry, and high-impurity dirty oil obtained after filtration is discharged and can be used for coking raw materials for coking;
in the embodiment, the special membrane filter is connected in a pass mode, so that the filtering effect can be greatly improved, the oil yield is improved, the purification pipeline can be expanded in parallel, and the purification treatment capacity of the catalytic cracking slurry oil is increased.
Example two
Based on the first embodiment, the catalytic cracking slurry oil industrialized solid removal purification device of the embodiment includes that the second pipeline 9 is communicated with the feeding pipeline 1 through the circulating pipeline 11, and the circulating pipeline 11 is provided with the circulating control valve 12;
in the embodiment, the circulating filtration of the catalytic cracking slurry oil is realized by connecting the circulating pipeline, and the utilization efficiency of the catalytic cracking slurry oil is ensured.
EXAMPLE III
Based on the above embodiment, the catalytic cracking slurry oil industrialized solid removal purification device of the embodiment is characterized in that the first pipeline 8 is communicated with the second pipeline 9 through a third pipeline 13, the third pipeline 13 is provided with a first valve 14, a fourth pipeline 15 is arranged between a plurality of special membrane filters 4 connected in series with the purification pipeline 3, two ends of the fourth pipeline 15 are respectively communicated with the purification pipeline 3 and the circulation pipeline 11, and the fourth pipeline 15 is provided with a parallel control valve 16;
in this embodiment, the first pipeline and the second pipeline are communicated through the third pipeline, and the parallel connection between the special membrane filters is realized through the fourth pipeline, so that the catalytic cracking device is suitable for catalytic cracking slurry oil with relatively good oil products, and the purification treatment efficiency of the catalytic cracking slurry oil can be greatly improved.
Example four
Based on the above embodiment, the catalytic cracking slurry oil industrialized solid removal purification device of the embodiment includes that a cleaning pipeline 17 is arranged between the first pipeline 8 and the second pipeline 9, a cleaning agent storage tank 18, a cleaning circulating pump 19 and a cleaning control valve 20 are arranged on the cleaning pipeline 17, and a second valve 21 is arranged between the feeding pipeline 1 and the first pipeline 8;
a pressure stabilizing pipeline 22 is communicated between the feeding pipeline 1 and the circulating pipeline 11, pressure stabilizing control valves 23 are arranged at two ends of the pressure stabilizing pipeline 22, and an intermediate tank 24 is arranged in the middle of the pressure stabilizing pipeline 22;
in this embodiment, the second valve is closed, the feeding pipeline and the first pipeline can be cut off, 2 independent pipeline circulations are formed by matching the cleaning pipeline and the pressure stabilizing pipeline, the pressure stabilizing pipeline is used for self-circulation of the catalytic cracking slurry oil to prevent the catalytic cracking slurry oil from stopping flowing and is not beneficial to follow-up purification treatment, and the cleaning pipeline is used for cleaning a special membrane filter to maintain the filtering performance of the membrane filter.
Example five.
Based on the above embodiment, the embodiment discloses a purification method of a catalytic cracking slurry oil industrialized solid removal purification device, which is characterized by comprising a large parallel purification mode, a small parallel purification mode and a cleaning mode;
(1) the large parallel purification mode comprises the following steps: the feeding pipeline 1, the first pipeline 8, the purifying pipeline 3, the second pipeline 9 and the concentrated solution pipeline 6 are communicated in sequence, the purifying solution pipeline 5 is in an on state, the parallel control valve 16 and the cleaning control valve 20 are closed, and the second pipeline 9 and the cleaning pipeline 17 are in a closed state;
the oil slurry circulating pump 2 is started, the feeding pipeline 1 conveys catalytic cracking oil slurry into the solid removal purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines 3 which are arranged in parallel through a first pipeline 8 and sequentially passes through a plurality of special membrane filters 4 which are arranged in series, the filtered purified oil slurry is discharged from a purified liquid pipeline 5, and the residual high-impurity sump oil is discharged from a concentrated liquid pipeline 6;
cyclic purification in a large parallel purification mode: when a large parallel purification mode is carried out, the discharge valve 10 is closed, the circulation control valve 12 is opened, at the moment, the concentrated solution pipeline 6 is closed, the circulation pipeline 11 is open, the high-impurity sump oil filtered by the special membrane filter 4 returns to the feeding pipeline 1 from the circulation pipeline 11 and enters the special membrane filter 4 again along with a small amount of newly injected catalytic cracking slurry, the circulation purification is carried out, the circulation time of the slurry can be set, when the circulation time of the slurry is cut off, the discharge valve 10 is automatically opened, the circulation control valve 12 is automatically closed, the concentrated solution pipeline 6 is opened, the circulation pipeline 11 is closed, and the high-impurity sump oil in the solid removal purification device is discharged from the concentrated solution pipeline 6;
(2) the small parallel purification mode is as follows: on the basis of a large parallel connection purification mode, opening a first valve 14, a parallel connection control valve 16, a third pipeline 13 and a fourth pipeline 15;
the oil slurry circulating pump 2 is started, the feeding pipeline 1 conveys catalytic cracking oil slurry into the solid removal purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines 3 which are arranged in parallel through a first pipeline 8, meanwhile, the filtered purified oil slurry is discharged from a purification liquid pipeline 5 through a plurality of special membrane filters 4 which are arranged in parallel in the purification pipelines 3, and the residual high-impurity sump oil is discharged from a concentrated liquid pipeline 6;
cyclic purification in small parallel purification mode: when a small parallel purification mode is carried out, the discharge valve 10 is closed, the circulation control valve 12 is opened, at the moment, the concentrated solution pipeline 6 is closed, the circulation pipeline 11 is open, the high-impurity sump oil filtered by the special membrane filter 4 returns to the feeding pipeline 1 from the circulation pipeline 11 and enters the special membrane filter 4 again along with a small amount of newly injected catalytic cracking slurry, the circulation purification is carried out, the circulation time of the slurry can be set, when the circulation time of the slurry is cut off, the discharge valve 10 is automatically opened, the circulation control valve 12 is automatically closed, the concentrated solution pipeline 6 is opened, the circulation pipeline 11 is closed, and the high-impurity sump oil in the solid removal purification device is discharged from the concentrated solution pipeline 6;
(3) the cleaning mode is as follows: the second valve 21 is closed, the feeding pipeline 1 and the first pipeline 8 are cut off, the cleaning control valve 20 is opened, the pressure stabilizing control valve 23 is opened, the circulating control valve 12 is closed, the feeding pipeline 1, the pressure stabilizing pipeline 22 and the circulating pipeline 11 are communicated and circulated, and the first pipeline 8, the purifying pipeline 3, the circulating pipeline 11 and the cleaning pipeline 17 are communicated and circulated;
starting an oil slurry circulating pump 2, circulating catalytic cracking oil slurry among a feeding pipeline 1, a pressure stabilizing pipeline 22 and a circulating pipeline 11, storing the catalytic cracking oil slurry with overload pipelines in a middle tank 24, starting a cleaning circulating pump 19, enabling a cleaning agent to flow out of a cleaning agent storage tank 18, and circulating among a cleaning pipeline 17, a first pipeline 8, a purifying pipeline 3 and the circulating pipeline 11 until cleaning is finished;
after cleaning, the pipe wall of a cleaning control valve 20 at the inlet end of a cleaning pipeline 17 is opened, a discharge valve 10 is opened, the cleaning agent waste liquid is discharged from a concentrated liquid pipeline 6, when the cleaning agent waste liquid is completely discharged, the cleaning control valve 20 is completely closed, a cleaning circulating pump 19 is closed, the cleaning pipeline 17 is closed, at the moment, a pressure stabilizing control valve 23 at the inlet end of a pressure stabilizing pipeline 22 is closed, a second valve 21 is opened, the catalytic cracking slurry oil enters a first pipeline 8 again for large parallel purification or small parallel purification, the catalytic cracking slurry oil in an intermediate tank 24 is slowly supplemented to a feeding pipeline 1 through an oil pump in the intermediate tank 24 until the catalytic cracking slurry oil in the intermediate tank 24 is completely pumped out, at the moment, the pressure stabilizing control valve 23 is completely closed, and the pressure stabilizing pipeline 22 is closed.
EXAMPLE six
In the industrialized solid removal and purification device for the catalytic cracking slurry oil of the embodiment, the feeding control valve 7, the discharge valve 10, the circulation control valve 12, the cleaning control valve 20, the second valve 21 and the pressure stabilizing control valve 23 are controlled by a PLC to be opened and closed, and the slurry oil circulating pump 2 and the cleaning circulating pump 19 are controlled by a PLC to be opened and closed;
the cleaning agent storage tank 18 is provided with a liquid supplementing port 25 at the upper end and a vent port 26 at the lower end, valves are arranged at the liquid supplementing port 25 and the vent port 26, and the cleaning agent in the cleaning agent storage tank 18 is supplemented through the liquid supplementing port 25 and is evacuated through the vent port 26;
the special membrane filter produced by the new material limited company of seimiaceae of Jiangsu in the embodiment is the membrane filter with the model/number of SRMK-MG19O50YJ01, the special membrane filter adopts a special membrane material subjected to surface oleophylic modification, has excellent oleophylic performance, and compared with a common inorganic membrane filter on the market, the efficiency of oil slurry passing through membrane pores is improved by more than 10% under the same condition.
In conclusion, the special membrane filter is reasonable in structure and simple in principle, is used for purifying and separating catalytic cracking slurry oil, can realize series-parallel connection adjustment of the special membrane filter by controlling the pipeline, effectively meets the filtering and purifying requirements of different oil product slurry oil, is beneficial to improvement of the overall efficiency, and meanwhile realizes cleaning of the special membrane filter under the condition that the slurry oil does not stop flowing, thereby being beneficial to cleaning of the special membrane filter, maintaining of the filtering performance of the special membrane filter and saving of the cost of the slurry oil after the slurry oil stops flowing.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a catalytic cracking slurry oil industrialization takes off solid purifier, a serial communication port, including feed line, slurry oil circulating pump, purifying pipeline, special membrane filter, purifying liquid pipeline and concentrate pipeline, the last feeding control valve that is equipped with of feed line, the first pipeline of its end intercommunication, the slurry oil circulating pump sets up in the feed line middle part, first pipeline and purifying pipeline intercommunication, purifying pipeline's quantity is mostly the group, and parallelly connected the setting between first pipeline and second pipeline, and the last series connection of purifying pipeline is equipped with a plurality of special membrane filters, special membrane filter's the purifying liquid export and purifying liquid pipeline intercommunication, second pipeline and concentrate pipeline intercommunication, establish the bleeder valve on the concentrate pipeline.
2. The catalytic cracking slurry oil industrialization of claim 1, wherein the second pipeline is communicated with the feeding pipeline through a circulating pipeline, and a circulating control valve is arranged on the circulating pipeline.
3. The catalytic cracking slurry oil industrialized separation purification device of claim 2, wherein the first pipeline and the second pipeline are communicated through a third pipeline, the third pipeline is provided with a first valve, a fourth pipeline is arranged among a plurality of special membrane filters connected in series with the purification pipeline, two ends of the fourth pipeline are respectively communicated with the purification pipeline and the circulation pipeline, and the fourth pipeline is provided with a parallel control valve.
4. The catalytic cracking slurry oil industrialization of claim 3, wherein a cleaning pipeline is arranged between the first pipeline and the second pipeline, a cleaning agent storage tank, a cleaning circulating pump and a cleaning control valve are arranged on the cleaning pipeline, and a second valve is arranged between the feeding pipeline and the first pipeline.
5. The catalytic cracking slurry oil industrialized de-solidification purification device as claimed in claim 4, wherein a pressure stabilizing pipeline is communicated between the feeding pipeline and the circulating pipeline, pressure stabilizing control valves are arranged at two ends of the pressure stabilizing pipeline, and a middle tank is arranged in the middle of the pressure stabilizing pipeline.
6. A purification method of a catalytic cracking slurry oil industrialized solid removal purification device is characterized by comprising a large parallel purification mode, a small parallel purification mode and a cleaning mode;
(1) the large parallel purification mode comprises the following steps: the feeding pipeline, the first pipeline, the purification pipeline, the second pipeline and the concentrated solution pipeline are sequentially communicated, the purification solution pipeline is in an access state, the parallel control valve and the cleaning control valve are closed, and the second pipeline and the cleaning pipeline are in a closed state;
the oil slurry circulating pump is started, the feeding pipeline conveys catalytic cracking oil slurry to the de-solid purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines arranged in parallel through a first pipeline and sequentially passes through a plurality of special membrane filters arranged in series, the filtered purified oil slurry is discharged from the purification liquid pipeline, and the residual high-impurity sump oil is discharged from the concentrated liquid pipeline;
cyclic purification in a large parallel purification mode: when a large parallel purification mode is carried out, the discharge valve is closed, the circulation control valve is opened, at the moment, the concentrated solution pipeline is closed and the circulation pipeline is open, the high-impurity dirty oil filtered by the special membrane filter returns to the feeding pipeline from the circulation pipeline and enters the special membrane filter again along with a small amount of newly injected catalytic cracking oil slurry, the circulation purification is carried out, the oil slurry circulation time can be set, when the oil slurry circulation time is cut off, the discharge valve is automatically opened, the circulation control valve is automatically closed, the concentrated solution pipeline is open-circuited and the circulation pipeline is closed, and the high-impurity dirty oil in the de-solid purification device is discharged from the concentrated solution pipeline;
(2) the small parallel purification mode is as follows: on the basis of a large parallel connection purification mode, opening a first valve, a parallel connection control valve, a third pipeline and a fourth pipeline passage;
the oil slurry circulating pump is started, the feeding pipe conveys catalytic cracking oil slurry to the de-solid purification device, the catalytic cracking oil slurry enters a plurality of groups of purification pipelines arranged in parallel through a first pipeline, meanwhile, the filtered purified oil slurry is discharged from the purification liquid pipeline through a plurality of special membrane filters arranged in parallel in the purification pipelines, and the residual high-impurity sump oil is discharged from the concentrated liquid pipeline;
cyclic purification in small parallel purification mode: when the small parallel purification mode is carried out, the discharge valve is closed, the circulation control valve is opened, at the moment, the concentrated solution pipeline is closed and the circulation pipeline is open, the high-impurity dirty oil filtered by the special membrane filter returns to the feeding pipeline from the circulation pipeline and enters the special membrane filter again along with a small amount of newly injected catalytic cracking oil slurry, the circulation purification is carried out, the oil slurry circulation time can be set, when the oil slurry circulation time is cut off, the discharge valve is automatically opened, the circulation control valve is automatically closed, the concentrated solution pipeline is open-circuited and the circulation pipeline is closed, and the high-impurity dirty oil in the de-solid purification device is discharged from the concentrated solution pipeline;
(3) the cleaning mode is as follows: the second valve is closed, the feeding pipeline and the first pipeline are cut off, the cleaning control valve is opened, the pressure stabilizing control valve is opened, the circulating control valve is closed, the feeding pipeline, the pressure stabilizing pipeline and the circulating pipeline are communicated and circulated, and the first pipeline, the purifying pipeline, the circulating pipeline and the cleaning pipeline are communicated and circulated;
starting an oil slurry circulating pump, circulating catalytic cracking oil slurry among a feeding pipeline, a pressure stabilizing pipeline and a circulating pipeline, storing the catalytic cracking oil slurry with overloaded pipelines in a middle tank, starting a cleaning circulating pump, enabling a cleaning agent to flow out from a cleaning agent storage tank, and circulating among a cleaning pipeline, a first pipeline, a purifying pipeline and the circulating pipeline until the cleaning is finished;
after cleaning, cleaning the pipe wall of a cleaning control valve at the inlet end of a pipeline, opening a discharge valve, discharging cleaning agent waste liquid from a concentrated liquid pipeline, when the cleaning agent waste liquid is completely discharged, completely closing the cleaning control valve, closing a cleaning circulating pump, closing a cleaning pipeline, closing a pressure stabilizing control valve at the inlet end of the pressure stabilizing pipeline, opening a second valve, enabling catalytic cracking slurry oil to reenter a first pipeline for large parallel purification or small parallel purification, slowly supplementing the catalytic cracking slurry oil in an intermediate tank to a feeding pipeline through an oil pump in the intermediate tank until the catalytic cracking slurry oil in the intermediate tank is completely pumped out, at the moment, completely closing the pressure stabilizing control valve, and closing the pressure stabilizing pipeline.
7. The catalytic cracking slurry oil industrialized solidification purification device as claimed in claim 5, wherein the feeding control valve, the discharge valve, the circulation control valve, the cleaning control valve, the second valve and the pressure stabilizing control valve are opened and closed under the control of a PLC.
8. The catalytic cracking slurry oil industrialization of claim 7, wherein the slurry oil circulating pump and the cleaning circulating pump are both controlled by PLC switch.
9. The catalytic cracking slurry oil industrialization of claim 5, wherein the cleaning agent storage tank is provided with a fluid infusion port at the upper end and a drain port at the lower end, and the fluid infusion port and the drain port are provided with valves.
10. The catalytic cracking slurry oil industrialization of claim 9, wherein the cleaning agent in the cleaning agent storage tank is replenished through a liquid replenishing port and is emptied through an emptying port.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868156A (en) * | 2019-03-07 | 2019-06-11 | 湖南中天元环境工程有限公司 | A kind of catalytic cracked oil pulp filter device and method |
| CN110317632A (en) * | 2019-08-02 | 2019-10-11 | 湖南中天元环境工程有限公司 | A kind of purification device and method of catalytic cracked oil pulp |
| CN212128071U (en) * | 2020-04-10 | 2020-12-11 | 江苏赛瑞迈科新材料有限公司 | Catalytic cracking slurry oil industrialization takes off solid purifier |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868156A (en) * | 2019-03-07 | 2019-06-11 | 湖南中天元环境工程有限公司 | A kind of catalytic cracked oil pulp filter device and method |
| CN110317632A (en) * | 2019-08-02 | 2019-10-11 | 湖南中天元环境工程有限公司 | A kind of purification device and method of catalytic cracked oil pulp |
| CN212128071U (en) * | 2020-04-10 | 2020-12-11 | 江苏赛瑞迈科新材料有限公司 | Catalytic cracking slurry oil industrialization takes off solid purifier |
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