CN110129093A - A kind of pre-hydrotreating reaction system - Google Patents
A kind of pre-hydrotreating reaction system Download PDFInfo
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- CN110129093A CN110129093A CN201910423544.1A CN201910423544A CN110129093A CN 110129093 A CN110129093 A CN 110129093A CN 201910423544 A CN201910423544 A CN 201910423544A CN 110129093 A CN110129093 A CN 110129093A
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- China
- Prior art keywords
- reaction system
- hydrotreating reaction
- main reactor
- deolefination
- filter
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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
- C10G63/00—Treatment of naphtha by at least one reforming process and at least one other conversion process
- C10G63/02—Treatment of naphtha by at least one reforming process and at least one other conversion process plural serial stages only
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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)
Abstract
The invention discloses a kind of pre-hydrotreating reaction systems, including automatic backwashing filter, surge tank, deolefination protector and the main reactor for being sequentially arranged and being sequentially communicated along material conveying direction；The automatic backwashing filter includes several filter cylinders being arranged in parallel, and the feed end of the filter cylinder is provided with strainer, and the flusher being connected to each filter cylinder and the pressure detector with flusher cooperation are provided in the automatic backwashing filter.Equipment downtime caused by the pre-hydrotreating reaction system can be avoided effectively because of pipe blocking guarantees reformer and associated process equipment long period even running.
Description
Technical field
The present invention relates to petrochemical equipment pre-hydrotreating reaction technical field, in particular to a kind of pre-hydrotreating reaction system.
Background technique
Catalytic reforming unit is in modern petroleum refinery and petrochemical complex as important aromatics producing unit
One of most common device, the resulting light gasoline fraction of crude distillation (or naphtha) are heating, existing for hydrogen pressure and catalyst
Under the conditions of, it is transformed into the high-knock rating gasoline (Reformed Gasoline) rich in aromatic hydrocarbons, or produce benzene, toluene and diformazan through Aromatics Extractive Project
Benzene, and by-product liquefied petroleum gas and hydrogen.
In actual process operation, pre-add hydrogen workshop section provides qualified raw material to reform reaction feed, transports for a long time in equipment
After row, since impurity and dirt deposition obstruction cause pipeline conducting unsmooth, the first and last side pressure difference of pre- hydrogenation system is caused to increase, this
Equipment stable operation and technique normally can be implemented to adversely affect, therefore, corresponding plant area staff generally can every year
The processing of primary shut-down skimming is carried out to pre-add hydrogen process equipment, that is, by siltation in pipeline impurity and dirt completely remove, with
It replys pipeline unobstructed, and restores the first and last side pressure difference of pre- hydrogenation system to zone of reasonableness.However, above-mentioned shut-down skimming processing
Process, which needs to implement to shut down to pre-add hydrogen process equipment, can just carry out relevant operation, this just seriously constrains the steady of reformer
Long-term operation, and adversely affected to the implementation of the continuous-stable of associated production technique.
Therefore, how a kind of pre-add hydrogen that can guarantee reformer and associated process equipment long period even running is provided
Reaction system is the important technological problems that those skilled in the art need to solve at present.
Summary of the invention
The object of the present invention is to provide a kind of pre-hydrotreating reaction system, which can effectively be avoided because of pipe
Equipment downtime caused by roadlock plug guarantees reformer and associated process equipment long period even running.
In order to solve the above technical problems, the present invention provides a kind of pre-hydrotreating reaction system, including suitable along material conveying direction
Secondary setting and automatic backwashing filter, surge tank, deolefination protector and the main reactor being sequentially communicated；
The automatic backwashing filter includes several filter cylinders being arranged in parallel, and the feed end of the filter cylinder is provided with filter
Net is provided with the flusher being connected to each filter cylinder and the pressure with flusher cooperation in the automatic backwashing filter
Difference detector.
Preferably, the main reactor at least two, each main reactor are sequentially connected in series, and each main reactor
It is directly connected to by conveying pipeline between the deolefination protector.
Preferably, the conveying pipeline road is provided with control valve.
Preferably, the charging end pressure of the main reactor is 4.0~4.3Mpa, and feed end hydrogen-oil ratio is not less than 120 marks
Quasi- cubic meter, feed end volume space velocity are not more than 6h-1, 300 DEG C~350 DEG C of feed end temperature.
Preferably, the bottom of the surge tank, which is provided with, cuts water packet, is additionally provided with level display device in the surge tank.
Preferably, the total liquid level of grease in the surge tank is 45%, and the water body liquid level upper limit value in the surge tank is
20%.
Preferably, the charging end pressure of the deolefination protector is 4Mpa, and feed end hydrogen-oil ratio is vertical not less than 120 standards
Square rice, feed end temperature are 130 DEG C~180 DEG C, and the reaction temperature increasing degree of the deolefination protector is 1 DEG C~3 DEG C.
Relatively above-mentioned background technique, pre-hydrotreating reaction system provided by the present invention, in operational process, oil liquid is successively passed through
Each strainer and filter cylinder of automatic backwashing filter collaborate and are passed through in the surge tank in downstream to carry out after filtering impurity and dirt
Water-oil separating, the pure oil liquid isolated continue to be passed through in the deolefination protector in downstream, so as to the alkene mixed in oil liquid,
The easily coking substance such as alkadienes carries out saturation removing, while can also moderately remove to metal impurities, and completing deolefination, treated
Oil liquid continues to be passed through in main reactor to implement pre-hydrotreating；After equipment longtime running, if occurring at strainer and filter cylinder miscellaneous
Matter or dirt deposition, then pressure detector senses that the feed end of automatic backwashing filter and discharge end pressure difference increase, thus
Feedback signal controls flusher back flush filter cylinder and strainer, so that the impurity and dirt that will be deposited at strainer and filter cylinder rinse
Removal guarantees that pipeline is unimpeded, so that carrying out skimming scale removal without individually shutting down when equipment day-to-day operation, and then guarantees to reform
Device and associated process equipment long period even running.
In another preferred embodiment of the invention, the main reactor at least two, each main reactor are successively gone here and there
Connection, and be directly connected to by conveying pipeline between each main reactor and the deolefination protector.In equipment running process,
Under normal circumstances, each concatenated main reactor can greatly improve material treatment effeciency and treatment effect, improve pre-hydrotreating reaction
Overall treatment efficiency；When needing to carry out independent skimming scale removal or other Maintenance and Repair operations to any main reactor, it is only necessary to
The corresponding conveying pipeline of the main reactor is truncated and the main reactor is removed into i.e. implementable relevant operation, without to entirely setting
Standby and system is implemented to shut down, and ensure that the stable and continuous operating of associated process equipment, improves the long period of associated process equipment
Running efficiency and stability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the overall structure diagram of pre-hydrotreating reaction system provided by a kind of specific embodiment of the present invention.
Wherein, 11- automatic backwashing filter, 111- filter cylinder, 12- surge tank, 121- cut water packet, the protection of 13- deolefination
Device, 14- main reactor.
Specific embodiment
Core of the invention is to provide a kind of pre-hydrotreating reaction system, which can effectively avoid because of pipe
Equipment downtime caused by roadlock plug guarantees reformer and associated process equipment long period even running.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Referring to FIG. 1, Fig. 1 is the overall structure of pre-hydrotreating reaction system provided by a kind of specific embodiment of the present invention
Schematic diagram.
In a specific embodiment, pre-hydrotreating reaction system provided by the present invention, including sequentially along material conveying direction
Automatic backwashing filter 11, surge tank 12, deolefination protector 13 and the main reactor 14 for being arranged and being sequentially communicated；Automatically
Backwash filter 11 includes several filter cylinders 111 being arranged in parallel, and the feed end of filter cylinder 111 is provided with strainer, automatic backwash
The flusher being connected to each filter cylinder 111 and the pressure detector with flusher cooperation are provided in filter 11.
In operational process, oil liquid successively each strainer through automatic backwashing filter 11 and filter cylinder 111 by impurity and dirt
Collaborate and be passed through the interior progress water-oil separating of surge tank 12 in downstream after filtering, the pure oil liquid isolated continues to be passed through the de- of downstream
In alkene protector 13, to carry out saturation removing to the easily coking substance such as alkene, alkadienes mixed in oil liquid, while to gold
Belonging to impurity can also moderately remove, and complete deolefination treated that oil liquid continues is passed through in main reactor 14 to implement at pre-add hydrogen
Reason；After equipment longtime running, if generation impurity or dirt deposition, pressure detector sense automatically at strainer and filter cylinder 111
The feed end and discharge end pressure difference of backwash filter 11 increase, so that feedback signal controls flusher back flush filter cylinder 111
And strainer guarantees that pipeline is unimpeded to wash off the impurity being deposited at strainer and filter cylinder 111 and dirt, so that
Skimming scale removal is carried out without individually shutting down when equipment day-to-day operation, and then guarantees that reformer and associated process equipment long period are flat
Steady operation.
It should be noted that specific in practical application, the bore size of above-mentioned strainer is preferably 25 microns, to adapt to absolutely
Impurity and dirt filtration needs under most of operating condition, certainly, it is contemplated that the operating condition difference in practical application, staff may be used also
To select the strainer of other bore sizes to carry out assembly use, to meet the equipment operation demand under different situations, in principle, only
If the actual use that can satisfy the pre-hydrotreating reaction system needs.
Further, main reactor 14 at least two, each main reactor 14 are sequentially connected in series, and each main reactor 14 and de-
It is directly connected to by conveying pipeline between alkene protector 13.In equipment running process, under normal circumstances, each concatenated main reaction
Device 14 can greatly improve material treatment effeciency and treatment effect, improve the overall treatment efficiency of pre-hydrotreating reaction；When needs pair
When any main reactor 14 carries out independent skimming scale removal or other Maintenance and Repair operations, it is only necessary to which the main reactor 14 is corresponding defeated
Expects pipe road is truncated and the main reactor 14 is removed i.e. implementable relevant operation, without implementing to shut down to whole equipment and system,
The stable and continuous operating that ensure that associated process equipment, improves the long-term operation efficiency and stability of associated process equipment.
Specifically, conveying pipeline road is provided with control valve.When practical operation, when needs are implemented to examine to single main reactor 14
When repairing maintenance or scaling operation, it is only necessary to can be by the conveying by the control valve closing of the corresponding conveying pipeline road of main reactor 14
Pipeline disconnects, to implement corresponding operating, after end of operation, it is only necessary to which the main reactor can be made by reopening the control valve
14 and its corresponding conveying pipeline again in access system pipeline, operation is reorganized and outfit with the full working scope of restorer.
More specifically, the charging end pressure of main reactor 14 is 4.0~4.3Mpa, feed end hydrogen-oil ratio is not less than 120 marks
Quasi- cubic meter, feed end volume space velocity are not more than 6h-1, 300 DEG C~350 DEG C of feed end temperature.Specifically, through main reactor 14
In the oil liquid product exported after processing, the sulfur content in every gram of oil liquid is not more than 0.5 gram, and the nitrogen content in every gram of oil liquid is not more than
0.5 gram, to meet the reformer fuel requirements under most operating conditions.In addition, sediment incrustation basket is arranged in the top of main reactor 14,
Will pass through gradation reagent to provide protection to correlated response, slow down the carbon distribution speed of catalyst coating, it is ensured that equipment single fortune
Catalyst bed pressure difference amount of increase in the turn-week phase is not more than 0.6Mpa.
On the other hand, the bottom of surge tank 12, which is provided with, cuts water packet 121, and liquid level display dress is additionally provided in surge tank 12
It sets.Staff can be made to understand the liquid level shape that 12 inner fluid of surge tank and water body are layered in real time by the level display device
State, so that water body layering is cut off outside simultaneously discharger by cutting water packet 121 in time when water body liquid level reaches upper limit value, with
Guarantee the relatively pure of oil liquid, avoids in oil liquid water content excessive and subsequent technique implementation is adversely affected.
Correspondingly, the cavity volume of above-mentioned surge tank 12 is generally 56.1 cubic metres, and above-mentioned surge tank in practical operation
Lower water column and superimposed total liquid level under upper layer oil liquid static condition are the 45% of 12 inner cavity effective height of surge tank in 12, and
Water body part liquid level upper limit value in surge tank 12 is the 20% of 12 inner cavity effective height of surge tank, that is, when water body liquid level
When accounting is more than 20%, it will pass through to cut water packet 121 and be layered water body and cut off, so that water body build-up of fluid is to reasonable altitudes.
Certainly, the liquid level limit value of the cavity volume of above-mentioned surge tank 12 and water body, oil liquid is not limited to described above, real
It can also need to be adjusted flexibly according to operating condition in the application of border, in principle, as long as can satisfy the pre-hydrotreating reaction system
Actual use needs.
In addition, the charging end pressure of deolefination protector 13 is 4Mpa, feed end hydrogen-oil ratio is not less than 120 standard cubes
Rice, feed end temperature are 130 DEG C~180 DEG C, and the reaction temperature increasing degree of the deolefination protector 13 is 1 DEG C~3 DEG C.In addition,
Distribution plate is provided on the deolefination protector 13, and its top is additionally provided with sediment incrustation basket, with flexible according to different duty requirements
The proportion of catalyst and reaction reagent is adjusted, to carry out adding hydrogen saturation to the alkene and alkadienes that contain in raw material, and meanwhile it is right
Metal impurities also have certain removal effect.
In summary, pre-hydrotreating reaction system provided in the present invention, in operational process, oil liquid is successively through automatic backflushing
Each strainer and filter cylinder for washing filter collaborate and are passed through in the surge tank in downstream to carry out water-oil separating after filtering impurity and dirt,
The pure oil liquid isolated continues to be passed through in the deolefination protector in downstream, so as to alkene, the alkadienes etc. mixed in oil liquid
Easy coking substance carries out saturation removing, while can also moderately remove to metal impurities, completes deolefination treated that oil liquid continues
It is passed through in main reactor to implement pre-hydrotreating；After equipment longtime running, if impurity or dirt occur at strainer and filter cylinder
Deposition, then pressure detector senses that the feed end of automatic backwashing filter and discharge end pressure difference increase, thus feedback signal
Flusher back flush filter cylinder and strainer are controlled, to wash off the impurity being deposited at strainer and filter cylinder and dirt, is protected
Demonstrate,prove pipeline it is unimpeded so that when equipment day-to-day operation without individually shut down carry out skimming scale removal, and then guarantee reformer and
Associated process equipment long period even running.
Pre-hydrotreating reaction system provided by the present invention is described in detail above.Specific case used herein
Principle and implementation of the present invention are described, the above embodiments are only used to help understand side of the invention
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
In protection scope.
Claims (8)
1. a kind of pre-hydrotreating reaction system, it is characterised in that: including be sequentially arranged and be sequentially communicated along material conveying direction from
Dynamic backwash filter, surge tank, deolefination protector and main reactor；
The automatic backwashing filter includes several filter cylinders being arranged in parallel, and the feed end of the filter cylinder is provided with strainer, institute
It states and is provided with the flusher being connected to each filter cylinder in automatic backwashing filter and is examined with the pressure difference of flusher cooperation
Survey device.
2. pre-hydrotreating reaction system as described in claim 1, it is characterised in that: the main reactor at least two, each institute
It states main reactor to be sequentially connected in series, and is directly connected by conveying pipeline between each main reactor and the deolefination protector
It is logical.
3. pre-hydrotreating reaction system as claimed in claim 2, it is characterised in that: the conveying pipeline road is provided with control valve.
4. pre-hydrotreating reaction system as claimed in claim 2, it is characterised in that: the charging end pressure of the main reactor is
4.0~4.3Mpa, feed end hydrogen-oil ratio are not less than 120 standard cubic meters, and feed end volume space velocity is not more than 6h-1, feed end temperature
300 DEG C~350 DEG C of degree.
5. pre-hydrotreating reaction system as described in claim 1, it is characterised in that: the bottom of the surge tank, which is provided with, cuts water
It wraps, is additionally provided with level display device in the surge tank.
6. pre-hydrotreating reaction system as claimed in claim 5, it is characterised in that: the total liquid level of grease in the surge tank is
45%, and the water body liquid level upper limit value in the surge tank is 20%.
7. pre-hydrotreating reaction system as described in claim 1, it is characterised in that: the charging end pressure of the deolefination protector
For 4Mpa, feed end hydrogen-oil ratio is not less than 120 standard cubic meters, and feed end temperature is 130 DEG C~180 DEG C, and the deolefination is protected
The reaction temperature increasing degree for protecting device is 1 DEG C~3 DEG C.
8. pre-hydrotreating reaction system as described in claim 1, it is characterised in that: the top of the deolefination protector and described
It is provided with sediment incrustation basket at the top of main reactor, is additionally provided with distribution plate on the deolefination protector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910423544.1A CN110129093A (en) | 2019-05-21 | 2019-05-21 | A kind of pre-hydrotreating reaction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910423544.1A CN110129093A (en) | 2019-05-21 | 2019-05-21 | A kind of pre-hydrotreating reaction system |
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| CN110129093A true CN110129093A (en) | 2019-08-16 |
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2019
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| CN101376828A (en) * | 2007-08-27 | 2009-03-04 | 中国石油化工股份有限公司 | Hydrofinishing method for coker gasoline |
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| CN104830370A (en) * | 2015-04-30 | 2015-08-12 | 中海石油舟山石化有限公司 | Treatment method for removing impurities from raw oil |
| CN105038846A (en) * | 2015-08-25 | 2015-11-11 | 海南汉地阳光石油化工有限公司 | Feed filter back flush technique and back flush system in lubricating oil hydrogenation process |
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