CN204848771U - Low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature - Google Patents
Low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature Download PDFInfo
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- CN204848771U CN204848771U CN201520479602.XU CN201520479602U CN204848771U CN 204848771 U CN204848771 U CN 204848771U CN 201520479602 U CN201520479602 U CN 201520479602U CN 204848771 U CN204848771 U CN 204848771U
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Abstract
The utility model provides a low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature, include: suspension bed thermal high separator, the switching valve, the entry of switching valve pass through the pipeline with the liquid phase export of suspension bed thermal high separator lower extreme is connected, suspension bed temperature low pressure separator, two feed inlets of its lateral wall with be connected through return circuit decompression valves respectively between the export of switching valve, return circuit decompression valves is including the angle valve, first ball valve, relief pressure valve and the second ball valve that set gradually, the export of switching valve with between the entry of angle valve the export of angle valve with between the entry of first ball valve the export of first ball valve with between the entry of relief pressure valve the export of relief pressure valve with be connected through the pipeline respectively between the entry of second ball valve, the export of second ball valve is with corresponding the feed inlet is connected. The utility model discloses long period run can be realized, prior art's defect has been overcome.
Description
Technical field
The utility model belongs to Coal Chemical Industry and technical field of petrochemical industry, relates to the depressurized system of the hot high score of a kind of floating bed hydrogenation to low point of temperature.
Background technology
At present, the residual hydrogenation technology of countries in the world refinery industrial application has following 5 kinds: one to be coking, accounts for 32%; Two is viscosity breakings, accounts for 30%; Three is catalytic cracking, accounts for 19%; Four is fixed bed and boiling bed hydrogenation, accounts for 15%; Five is solvent deasphaltings, accounts for 4%.Coking and viscosity breaking account for 2/3 of the total working ability of residual oil, and other 3 kinds of processing technologies account for 1/3.
Although this several Residual cracking technology above-mentioned industrial application for many years, all having some limitations property and problems, can not adapt to the needs improving petroleum resources utilization ratios.And floating bed hydrocracking technology can not only process full cut poor residuum, also can realize coal, oil is mixing, and transformation efficiency is high, has stronger adaptability to raw material and economy.
Floating bed hydrocracking adopts " suspension bed+fixed bed " technical process, in floating bed hydrogenation part, suspended-bed reactor is entered, owing to not using catalyzer, so divide the heat cracking reaction of pressure at this mainly high hydrogen occurred after raw material, additive and hydrogen mixing increasing temperature and pressure.Carbon residue in reaction process Raw, bituminous matter, metal etc. are all adsorbed on additive and the reactions such as cracking occur, a small amount of coke of heavy metal and generation finally deposits on additive, additive and unconverted heavy component are deposited in bottom high pressure hot separator, enter light pressure separator through depressurized system and again carry out flash separation, isolatedly enter vacuum distillation tower carry out fractionation again containing stereoplasm liquid, entering formation system containing the solid dregs of fat and being cured of final VACUUM TOWER BOTTOM, forms the solid dregs of fat.
The raw material of boiling bed hydrogenation technique processing is also the mixture of heavy oil and additive or coal dust, ebullating bed reactor product needs the separation carrying out gas-liquid-solid through high pressure hot separator, solid and heavy liquid phase form slurries and bottom high pressure hot separator, enter MP (medium pressure) separator through depressurized system or light pressure separator is separated again, therefore also need a set of perfect and stable depressurized system by high temperature, High Pressure Difference deliver to light pressure separator containing stereoplasm liquid.
For current depressurized system bottom the suspension bed built or run, boiling bed hydrogenation device high pressure hot separator, all there is wear problem in various degree, within the shortest several hours, the longest some months carries out switching maintenance with regard to needs, operation easier is large, and the cost of overhaul is high, potential safety hazard is large, smooth running is difficult.
In view of this, the design people, according to the Production design experience being engaged in this area and association area for many years, develops the depressurized system of the hot high score of a kind of floating bed hydrogenation to low point of temperature, to solving prior art Problems existing.
Utility model content
The purpose of this utility model is the depressurized system being to provide the hot high score of a kind of floating bed hydrogenation to low point of temperature, can realize long-term operation, overcome the defect of prior art.
For this reason, the utility model proposes the depressurized system of the hot high score of a kind of floating bed hydrogenation to low point of temperature, it comprises:
One suspension bed high pressure hot separator;
One cross over valve, the entrance of described cross over valve is connected by the liquid-phase outlet of pipeline with described suspension bed high pressure hot separator lower end;
One suspension bed temperature light pressure separator, is connected respectively by primary Ioops reducer unit between two opening for feeds of described suspension bed temperature light pressure separator sidewall and the outlet of described cross over valve;
Wherein, described loop reducer unit comprises the angle valve, the first ball valve, reducing valve and the second ball valve that set gradually, and between the outlet of described cross over valve and the entrance of described angle valve, between the outlet of described angle valve and the entrance of described first ball valve, between the outlet of described first ball valve and the entrance of described reducing valve, the outlet of described reducing valve is connected respectively by a pipeline with between the entrance of described second ball valve, the outlet of described second ball valve is connected with corresponding described opening for feed.
The hot high score of floating bed hydrogenation as above, to the depressurized system of low point of temperature, wherein, each described pipeline is respectively equipped with a flush points and a condensate drain valve, and the described pipeline between described angle valve and described first ball valve is provided with a tensimeter.
The hot high score of floating bed hydrogenation as above is to the depressurized system of low point of temperature, and wherein, described cross over valve is provided with two described outlets, and each described outlet is connected respectively by the entrance of described pipeline with the angle valve of each described loop reducer unit.
The hot high score of floating bed hydrogenation as above is to the depressurized system of low point of temperature, and wherein, described angle valve, the first ball valve and the second ball valve are the high pressure valve of pressure rating CL2500, and described reducing valve is the angie type reducing valve of pressure rating CL2500.
The hot high score of floating bed hydrogenation as above is to the depressurized system of low point of temperature, wherein, the upper end opening for feed of described suspension bed high pressure hot separator connects floating bed hydrogenation reactor by feeding line, and its upper end gaseous phase outlet is used for being connected and fixed bed hydroprocessing reaction member by gas transmission line.
The hot high score of floating bed hydrogenation as above is to the depressurized system of low point of temperature, wherein, the gaseous phase outlet of described suspension bed temperature light pressure separator upper end is connected to suspension bed cold low separator by vapor delivery line, and the liquid-phase outlet of its lower end is connected to underpressure distillation unit by liquid phase pipeline.
The hot high score of the floating bed hydrogenation that the utility model proposes is to the depressurized system of low point of temperature, by arranging two loop reducer unit, and connect the discharge port of cross over valve and suspension bed temperature light pressure separator respectively, when primary Ioops reducer unit needs maintenance, another loop reducer unit can be switched to, achieve long-term operation; The flush points that loop reducer unit is arranged and condensate drain valve, rinse pipeline during easy access.In addition, in the utility model, by injecting low temperature VGO, reduce service temperature and the solid content of loop reducer unit, the wear resisting property of effective raising material, and, because service temperature reduces, effectively improve the work-ing life of the first reducing valve, the second reducing valve and pipeline, avoid tube coking.
In a word, relative to prior art, the utility model decreases cost, reaches investment-saving, economizes the effect of taking up an area, increasing work-ing life.
Accompanying drawing explanation
Fig. 1 is the composition structural representation of the hot high score of floating bed hydrogenation of the present utility model to the depressurized system of low point of temperature.
Main element label declaration:
1 suspension bed high pressure hot separator 11 feeding line
12 gas transmission lines
2 cross over valve 21 pipelines
3 suspension bed temperature light pressure separator 31 vapor delivery line
32 liquid phase pipelines
4 loop reducer unit 41 angle valves
42 first ball valve 43 reducing valve
44 second ball valve 45 pipelines
451 flush points 46 tensimeters
5 floating bed hydrogenation reactor 6 fixed bed hydrogenation reaction members
7 suspension bed cold low separator 8 underpressure distillation unit
Embodiment
In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and embodiment of the present utility model be described:
Fig. 1 is the composition structural representation of the hot high score of floating bed hydrogenation of the present utility model to the depressurized system of low point of temperature.
See Fig. 1, the hot high score of the floating bed hydrogenation that the utility model proposes is to the depressurized system of low point of temperature, it comprises suspension bed high pressure hot separator 1, cross over valve 2 and a suspension bed temperature light pressure separator 3, wherein, the entrance of described cross over valve 1 is connected by the liquid-phase outlet of pipeline 21 with described suspension bed high pressure hot separator 1 lower end; Two opening for feeds of described suspension bed temperature light pressure separator 3 sidewall are connected respectively by primary Ioops reducer unit 4 with between the outlet of described cross over valve 2;
Wherein, described loop reducer unit 4 comprises angle valve 41, first ball valve 42, reducing valve 43 and the second ball valve 44 that set gradually, and between the outlet of described cross over valve 2 and the entrance of described angle valve 41, between the outlet of described angle valve 41 and the entrance of described first ball valve 42, between the outlet of described first ball valve 42 and the entrance of described reducing valve 43, the outlet of described reducing valve 43 is connected respectively by a pipeline 45 with between the entrance of described second ball valve 44, the outlet of described second ball valve 44 is connected with corresponding described opening for feed.
As shown in Figure 1, each described pipeline 45 is respectively equipped with flush points 451 and a condensate drain valve (not shown), make the flushing medium pressure of flush points higher than the pressure of pipeline internal medium during work, during for overhauling, pipeline is rinsed, described pipeline 45 between described angle valve 41 and described first ball valve 42 is provided with a tensimeter 46, for monitoring the pressure in pipeline 45.Wherein, this pipeline 45 is preferably the pipeline of pressure rating CL2500.
Wherein, described suspension bed high pressure hot separator 1, cross over valve 2 and suspension bed temperature light pressure separator 3 are prior art, such as, for described suspension bed high pressure hot separator 1, it is vertical high pressure vessel, be made up of upper cover, cylindrical shell, lower cover, inner member etc., act as and the reaction product of suspended-bed reactor 5 carried out being separated of gas phase and liquid-solid phase, isolated gas phase enters fixed bed hydrogenation unit 6, isolated liquid-solid phase falls into bottom suspension bed high pressure hot separator 1 and mixes with low temperature VGO (vacuumgasoil, decompressed wax oil); Suspension bed high pressure hot separator 1 inside is provided with the inner member such as baffle plate and downtake, bottom Low Temperature Liquid phase region and top High Temperature Gas phase region are separated, both prevented the injection of low temperature VGO from High Temperature Gas phase materials is lowered the temperature, the slurries separated can be made again to fall into bottom suspension bed high pressure hot separator 1 by downtake;
In addition, described suspension bed temperature light pressure separator 3 is vertical pressure vessel, be made up of upper cover, cylindrical shell, bottom cone, wherein upper cover top is provided with gaseous phase outlet, level gauging mouth, relief valve port etc., cylindrical shell side is provided with opening for feed, liquidometer mouth, manhole etc., bottom cone is provided with liquid-phase outlet, and its inside can also arrange erosion control baffle plate.As for specific works principle and the working process of described suspension bed high pressure hot separator 1, cross over valve 2 and suspension bed temperature light pressure separator 3, do not repeat them here.
Refer to Fig. 1, in a preferred embodiment, described cross over valve 2 is provided with two described outlets, and each described outlet is connected respectively by the entrance of described pipeline 45 with the angle valve 41 of each described loop reducer unit 4.
In addition, preferred described angle valve 41, first ball valve 42 and the second ball valve 44 are the high pressure valve of pressure rating CL2500, described reducing valve 43 is the angie type reducing valve of pressure rating CL2500, makes the material of this high pressure valve and angie type reducing valve and structure formation can stand washing away of the slurry oil of solid content 40wt%.As for the topworks of described angle valve 41, first ball valve 42 and the second ball valve 44, can for pneumatic, to surge or electronic etc., can be decided according to the actual requirements, no longer specifically limit at this, such as, in the construction illustrated (dotted portion see in figure), by the control section of each described reducing valve 43 is passed through instrument control line and described suspension bed high pressure hot separator 1, the liquid level signal LIC in tank is utilized to control the aperture of reducing valve, the object controlling liquid level in tank can be reached, this technology is the known technology of this area, does not repeat them here.And described first ball valve 42 and the second ball valve 44, also can as required, select as two ball valve or single ball valve.Wherein, the high pressure of indication herein, the pressure be commonly referred to as is the scope of 10-100MPa.
Further, the upper end opening for feed of described suspension bed high pressure hot separator 1 connects floating bed hydrogenation reactor 5 by feeding line 11, its upper end gaseous phase outlet by gas transmission line 12 for being connected and fixed bed hydroprocessing reaction member 6.
In addition, the gaseous phase outlet of described suspension bed temperature light pressure separator 3 upper end is connected to suspension bed cold low separator 7 by vapor delivery line 31, and the liquid-phase outlet of its lower end is connected to underpressure distillation unit 8 by liquid phase pipeline 32.
The hot high score of the floating bed hydrogenation that the utility model proposes is to the depressurized system of low point of temperature, by arranging two-way loop reducer unit 4 between cross over valve 2, suspension bed temperature light pressure separator 3, by controlling the switch of each angle valve 41, after passing through Steering valve 2 from the slurries of suspension bed high pressure hot separator 1 outflow, suspension bed temperature light pressure separator 3 can be entered through wherein loop, a road reducer unit 4, make two-way loop reducer unit 4 share a cross over valve 2, form one and open a standby working order.
Operationally, material enters described suspension bed high pressure hot separator 1 from floating bed hydrogenation reactor 5, gaseous phase materials after separation enters fixed bed hydrogenation unit 6, the slurries of high solid content enter bottom suspension bed high pressure hot separator 1, the low temperature VGO being injected into suspension bed high pressure hot separator 1 dilutes cooling, the slurries that formation temperature is lower, solid content is lower; These slurries are through pipeline 21, and controlled to enter suspension bed temperature light pressure separator 3 through wherein loop, a road reducer unit 4 by cross over valve 2, when this loop reducer unit 4 needs maintenance, its angle valve 41 is closed, and another loop, road reducer unit 4 that comes into operation, thus achieve on-bne repair and the switching of each loop reducer unit 4.
The foregoing is only the schematic embodiment of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.
Claims (6)
1. the hot high score of floating bed hydrogenation is to a depressurized system for low point of temperature, it is characterized in that, the hot high score of described floating bed hydrogenation comprises to the depressurized system of low point of temperature:
One suspension bed high pressure hot separator;
One cross over valve, the entrance of described cross over valve is connected by the liquid-phase outlet of pipeline with described suspension bed high pressure hot separator lower end;
One suspension bed temperature light pressure separator, is connected respectively by primary Ioops reducer unit between two opening for feeds of described suspension bed temperature light pressure separator sidewall and the outlet of described cross over valve;
Wherein, described loop reducer unit comprises the angle valve, the first ball valve, reducing valve and the second ball valve that set gradually, and between the outlet of described cross over valve and the entrance of described angle valve, between the outlet of described angle valve and the entrance of described first ball valve, between the outlet of described first ball valve and the entrance of described reducing valve, the outlet of described reducing valve is connected respectively by a pipeline with between the entrance of described second ball valve, the outlet of described second ball valve is connected with corresponding described opening for feed.
2. the hot high score of floating bed hydrogenation as claimed in claim 1 is to the depressurized system of low point of temperature, it is characterized in that, each described pipeline is respectively equipped with a flush points and a condensate drain valve, and the described pipeline between described angle valve and described first ball valve is provided with a tensimeter.
3. the hot high score of floating bed hydrogenation as claimed in claim 1 or 2 is to the depressurized system of low point of temperature, it is characterized in that, described cross over valve is provided with two described outlets, and each described outlet is connected respectively by the entrance of described pipeline with the angle valve of each described loop reducer unit.
4. the hot high score of floating bed hydrogenation as claimed in claim 1 is to the depressurized system of low point of temperature, it is characterized in that, described angle valve, the first ball valve and the second ball valve are the high pressure valve of pressure rating CL2500, and described reducing valve is the angie type reducing valve of pressure rating CL2500.
5. the hot high score of floating bed hydrogenation as claimed in claim 1 is to the depressurized system of low point of temperature, it is characterized in that, the upper end opening for feed of described suspension bed high pressure hot separator connects floating bed hydrogenation reactor by feeding line, and its upper end gaseous phase outlet is used for being connected and fixed bed hydroprocessing reaction member by gas transmission line.
6. the hot high score of the floating bed hydrogenation as described in claim 1 or 5 is to the depressurized system of low point of temperature, it is characterized in that, the gaseous phase outlet of described suspension bed temperature light pressure separator upper end is connected to suspension bed cold low separator by vapor delivery line, and the liquid-phase outlet of its lower end is connected to underpressure distillation unit by liquid phase pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479602.XU CN204848771U (en) | 2015-07-06 | 2015-07-06 | Low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520479602.XU CN204848771U (en) | 2015-07-06 | 2015-07-06 | Low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature |
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| Publication Number | Publication Date |
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| CN204848771U true CN204848771U (en) | 2015-12-09 |
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| CN201520479602.XU Active CN204848771U (en) | 2015-07-06 | 2015-07-06 | Low depressurized system that divides of hot high score of suspension bed hydrogenation to temperature |
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