CN109486512A - The device and method of separating heavy from lightweight material pyrolysis product - Google Patents
The device and method of separating heavy from lightweight material pyrolysis product Download PDFInfo
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- CN109486512A CN109486512A CN201710822890.8A CN201710822890A CN109486512A CN 109486512 A CN109486512 A CN 109486512A CN 201710822890 A CN201710822890 A CN 201710822890A CN 109486512 A CN109486512 A CN 109486512A
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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
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
- C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0027—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium
- B01D5/003—Condensation of vapours; Recovering volatile solvents by condensation by direct contact between vapours or gases and the cooling medium within column(s)
-
- 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
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
- C10G2400/02—Gasoline
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention belongs to ethylene and correlative technology fields, and in particular to the device and method of separating heavy from lightweight material pyrolysis product.The device includes quenching water column, gun barrel, heavy oil tank and heavy petrol stripper；The quenching water column is connected to raw cracked gas feeding line, and quenching water column bottom is provided with heavy oil discharge outlet, and side is connected to by lateral line discharging pipeline with gun barrel, and top is provided with cracking gas outlet；The gun barrel is connected to by least one takeoff line with heavy oil tank, is connected to by light oil takeoff line with heavy petrol stripper, and side is provided with process water extraction mouth；The heavy petrol stripper is connected to by top discharge pipeline with quenching water column, and bottom is provided with heavy petrol product extraction mouth.Compared with existing conventional ethylene device chilling area, process of the present invention is simple and direct, and easy to operate, number of devices is few, and investment is saved, and can isolate heavy oil, fuel oil and part of gasoline component from lightweight material pyrolysis product simultaneously.
Description
Technical field
The invention belongs to ethylene and correlative technology fields, heavy more particularly, to separating from lightweight material pyrolysis product
The device and method of component.
Background technique
The cracking stock of ethylene unit mainly has ethane, propane lighter hydrocarbons, saturation LPG, naphtha, hydrogenation tail oil and light diesel fuel
Deng general raw material is lighter, and the yield of ethylene is higher.With the exploitation of shale gas and associated gas all over the world, ethylene unit
The lighting of raw material has become Main Trends of The Development.
Domestic existing ethylene unit primary raw material is naphtha, hydrogenation tail oil etc., in pyrolysis product containing a large amount of gasoline,
Quenching oil column, quenching water column, gasoline stripping tower and light, heavy fuel oil stripper, benefit is arranged in diesel oil and fuel oil ingredient, chilling area
Diesel oil and fuel oil ingredient are separated with light, heavy fuel oil stripper with quenching oil column, utilizes quenching water column and gasoline stripping tower point
From gasoline component.And it is with light hydrocarbon component in lightweight material (including ethane, C3/C4, LPG, light naphtha etc.) pyrolysis product
It is main, a small amount of gasoline, weight fuel oil and heavy oil component are existed simultaneously, quench oil, disk oil circulation can not all be built in chilling system
Vertical, the hydro carbons that quenching oil column, quenching water column are isolated is few, and the separating effect of fuel oil stripper is unobvious, and appliance arrangement is thrown
Money waste is serious, therefore the chilling system of conventional ethylene device is not applicable.
Summary of the invention
It is mentioned to solve the problems, such as to lack in the prior art separating heavy means, the present invention from lightweight material pyrolysis product
A kind of device and method of separating heavy from lightweight material pyrolysis product is supplied.Process of the present invention is simple and direct, easy to operate, if
Standby quantity is few, and investment is saved, and can isolate gasoline, fuel oil and heavy oil component from lightweight material pyrolysis product simultaneously.
To achieve the goals above, the present invention provides a kind of device of separating heavy from lightweight material pyrolysis product,
The device includes quenching water column, gun barrel, heavy oil tank and heavy petrol stripper；
The quenching water column is connected to raw cracked gas feeding line, and quenching water column bottom is provided with heavy oil discharge outlet, with
Heavy oil tank connection, side are connected to by lateral line discharging pipeline with gun barrel, and top is provided with cracking gas outlet；Quenching water column
Bottom is provided with multiple chilled water (chw) outlet ports, and top and middle part are provided with chilling water return port；
The gun barrel is connected to by least one takeoff line with heavy oil tank, and light oil takeoff line and heavy petrol vapour are passed through
Stripper connection, side are provided with process water extraction mouth；
The heavy petrol stripper is connected to by top discharge pipeline with quenching water column, and bottom is provided with heavy petrol product and adopts
Outlet.
The interface internal adapter tube of a kind of preferred embodiment according to the present invention, the chilled water (chw) outlet port stretches out upwards, connects
The pipe other end is connected to chilling water pump.Preferably, the heavy oil discharge outlet is arranged in the quenching water column tower bottom minimum point, with institute
State the connection of one side entrance of heavy oil tank.Preferably, quenching water column lower part higher position side is open, and passes through lateral line discharging pipeline
It is connected to the gun barrel entrance.
A kind of preferred embodiment according to the present invention, the gun barrel are internally provided with coalescing internal and partition, will
Space is divided into three parts in tank: close to coalescing internal side be buffering side, close to partition side be light oil side, coalescing internal with every
It is water side between plate；Each section tank bottom is respectively arranged with takeoff line, the takeoff line and the heavy oil tank entrance of buffering side and water side
Connection, the takeoff line of light oil side are connected to through heavy petrol feed pump with heavy petrol stripper.Preferably, the process water extraction mouth is set
It sets in the middle part of the side wall of water side, with process water system connectivity.Preferably, the gun barrel entrance is located at the buffering side；Institute
Gun barrel tank deck setting balanced line is stated to be connected to the quenching water column lower part.
A kind of preferred embodiment according to the present invention, the heavy oil tank top connect with gun barrel and quenching water column tower reactor
Logical, bottom is connected to petroleum pump.
In accordance with the present invention it is preferred that heavy petrol stripper top is provided with feed(raw material)inlet, connect with heavy petrol feed pump
It is logical；It is connected in the middle part of overhead gas outlet and the quenching water column.
A kind of preferred embodiment according to the present invention, the heavy petrol stripper be provided with heavy petrol stripper reboiler,
Reboiler lime set tank；The heavy petrol stripper tower reactor is connected to the heavy petrol stripper reboiler, reboiler hot side pipeline with
The reboiler lime set tank connection.
The present invention also provides a kind of methods of separating heavy from lightweight material pyrolysis product, and this method is in above-mentioned dress
Middle progress is set, this method comprises:
Cracking gas from pyrolysis furnace is sent into quenching water column and is further cooled down after cooling down, dilute in cracking gas
It releases steam and heavy constituent is condensed, from quenching water column bottom discharge to heavy oil tank, chilled water (chw) is sent the heavy oil of condensation from tower reactor extraction
Enter chilled water (chw) circulation, it is further by coalescence and sedimentation that the mixture containing gasoline, fuel oil and process water is sent into gun barrel
Separation, the process water isolated are sent into technique water system, and the gasoline isolated, fuel oil are sent into heavy petrol stripper, are stripped
To light component send quenching water column back to, recombination is distributed into downstream unit or sends out battery limit (BL).
Preferably, heavy constituent by chilled water (chw) takes quenching water column tower reactor in cracking gas, and heavy oil component sinks to tower bottom lowest level
And be discharged into heavy oil tank, chilled water (chw) enters chilled water (chw) through chilled water (chw) outlet port and recycles；Quenching water column lower part is taken out by oil water mixture
It is sent into gun barrel out.
Under conditions of above-mentioned gun barrel is internally provided with coalescing internal and partition；Containing gasoline, fuel oil and technique
The mixture of water enters gun barrel from side, the current stabilization buffering through gun barrel, using coalescing internal, in grease point
Middle part settle and separate from tank；Hydro carbons is agglomerated into big drop by droplet, and under the effect of gravity, most heavy heavy oil component is from grease
It is deposited to tank bottom in the middle part of knockout drum, then is discharged into heavy oil tank；The water of secondary weight is enriched with above heavy oil component, from water-oil separating
The process water extraction mouth of pot sidewall is expelled to technique water system, in the middle part of gun barrel the boundary position of water not higher than on partition along and not
Lower than the bottom surface of tank；Most light hydro carbons floats on the top, and the other side of gun barrel is overflowed to through partition, is sent into heavy petrol vapour
Stripper stripping；The heavy oil that bottom accumulates is emitted into heavy oil tank by buffering side by takeoff line.
Low-pressure steam can be used in the heavy petrol stripper heat source, in such cases, it is preferable that the heavy petrol stripper
It is provided with heavy petrol stripper reboiler, reboiler lime set tank；The heavy petrol stripper tower reactor is connected to the heavy petrol stripping
Tower reboiler, reboiler hot side pipeline are connected to the reboiler lime set tank；Low-pressure steam pipeline boils again with heavy petrol stripper
The connection of device hot side；Heavy petrol stripper tower reactor product is C5s+ component.
High steam or cracking gas can be used in the heavy petrol stripper heat source, in such cases, high pressure steam line or
Cracking gas pipeline is directly connected to heavy petrol stripper bottom, and heavy petrol stripper tower reactor product is C8s+ component.
High steam and cracking gas also can be used in the heavy petrol stripper heat source, and in such cases, cracking gas pipeline is straight
Lead to heavy petrol stripper bottom in succession, high pressure steam line is directly connected in the middle part of heavy petrol stripper；Heavy petrol stripper
Tower reactor product is C8s+ component.
A kind of specific embodiment of the present invention is as follows: cracking gas gives up pot outlet through a series of cooling of cooling means from pyrolysis furnace
Afterwards, into quenching water column, about 40 DEG C are cooled to through chilled water (chw), the gasoline, fuel oil and heavy oil component in cracking gas are by chilled water (chw)
Bring quenching water column lower part into, due to the difference of density, heavy oil component sinks to quenching water column bottommost, through quenching water column bottom low spot
Heavy oil discharge outlet flows into heavy oil tank, and chilled water (chw) is pumped into urgency by chilled water (chw) above heavy oil, through tower bottom chilled water (chw) outlet port
Circulating chilled water, gasoline and fuel oil ingredient are drawn to water-oil separating in the top, from the higher position side in quenching water column lower part
In tank.
Coalescing internal and partition are set in gun barrel, divide the tank into three parts, buffers side, water side and light oil side,
The oil water mixture extracted out from quenching water column is flowed into the buffering side of gun barrel, passes through after the stabilization in space in the side tank
Coalescing internal enters the water side of tank, and a small amount of hydro carbons gathers into big drop by droplet in liquid, under the effect of gravity separation speed
Rate is accelerated, and a small amount of heavy oil component sinks to tank bottom, is discharged into heavy oil tank through tank bottom discharge outlet, and water is enriched in the middle part of tank, from tank side
Wall opening extraction feeding technique water system, and the smallest gasoline of density and light, the heavy fuel oil side of floating on the water, when top liquid level height
Hydro carbons overflows to light oil side when partition between water side and light oil side, and buffering side passes through takeoff line lacking bottom long-term accumulation
Amount heavy oil is emitted into heavy oil tank.In this process, the bound position of water not higher than edge on partition and is not less than gun barrel
Bottom surface, the hydro carbons of light oil side is by light oil side tank bottom discharge outlet with being pumped into heavy petrol stripper.Heavy petrol stripper can be used
A variety of different heat sources stripping, stripping top gaseous phase send quenching water column middle section back to, stripping tower bottoms phase product be sent into downstream unit or
Send out battery limit (BL).
Compared with existing conventional ethylene device chilling area, process of the present invention is simple and direct, and easy to operate, number of devices is few, investment
It saves, heavy oil, fuel oil and part of gasoline component can be isolated from lightweight material pyrolysis product simultaneously.
Other features and advantages of the present invention will then part of the detailed description can be specified.
Detailed description of the invention
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 is the process flow chart of the separating heavy of the invention from lightweight material pyrolysis product.
Fig. 2-4 is the schematic device of the separating heavy of the invention from lightweight material pyrolysis product.
Fig. 5 is quenching water column tower bottom aperture situation schematic diagram in the present invention.
Description of symbols:
1 quenching water column；2 gun barrels；3 heavy oil tanks；4 petroleum pumps；5 heavy petrol feed pumps；6 cooling cracking gases；On 7
Section returns to chilled water (chw)；8 middle sections return to chilled water (chw)；9 raw cracked gas；10 extraction chilled water (chw)s；11 heavy oil；12 process waters；13 coalescences
Component；14 partitions；15 heavy petrol strippers；16 heavy petrol stripper reboilers；17 reboiler lime set tanks；18 low-pressure steams；19
Low-pressure steam lime set；20 petrol pumps；21C5s+ component；22 high steams or cracking gas；23C8s+ component；24 cracking gases；25 is high
Press steam；26C8s+ component；27 heavy oil discharge outlets；28 chilled water (chw) outlet ports.
Specific embodiment
The preferred embodiment of the present invention is described in more detail below.Although the following describe preferred implementations of the invention
Mode, however, it is to be appreciated that may be realized in various forms the present invention without that should be limited by the embodiments set forth herein.
Embodiment 1:
As shown in Figure 1 and Figure 2, the device of the separating heavy from ethane cracking product includes quenching water column 1, grease
Knockout drum 2, heavy oil tank 3 and heavy petrol stripper 15；
The quenching water column 1 is connected to raw cracked gas feeding line, and 1 bottom of quenching water column is provided with heavy oil discharge outlet
27, it is connected to heavy oil tank 3, side is connected to by lateral line discharging pipeline with gun barrel 2, and top is provided with cracking gas outlet；
1 bottom of quenching water column is provided with multiple chilled water (chw) outlet ports 28, and top is provided with the return port that upper section returns to chilled water (chw) 7, middle part
It is provided with the return port that middle section returns to chilled water (chw) 8；The gun barrel 2 is connected to by two takeoff lines with heavy oil tank 3, is passed through
Light oil takeoff line is connected to heavy petrol stripper 15, and side is provided with process water extraction mouth；
The heavy petrol stripper 15 is connected to by top discharge pipeline with quenching water column 1, and bottom is provided with heavy petrol production
Product produce mouth.
Wherein, the interface internal adapter tube of the chilled water (chw) outlet port 28 stretches out upwards, and the adapter tube other end and chilling water pump are (not
Show) connection；The heavy oil discharge outlet 27 is arranged in the 1 tower bottom minimum point of quenching water column, with 3 one side entrance of heavy oil tank
Connection；1 lower part higher position side of the quenching water column opening, passes through lateral line discharging pipeline and 2 entrance of gun barrel
Connection.The set-up mode of the chilled water (chw) outlet port 28 and heavy oil discharge outlet 27 is as shown in Figure 5.
The gun barrel 2 is internally provided with coalescing internal 13 and partition 14, space in tank is divided into three parts: close
Coalescing internal side is buffering side, is light oil side close to partition side, is water side between coalescing internal 13 and partition 14；Each section
Tank bottom is respectively arranged with takeoff line, and the takeoff line for buffering side and water side is connected to heavy oil tank entrance, and the takeoff line of light oil side is through weight
Gasoline feeding pump 5 is connected to heavy petrol stripper 15；The process water extraction mouth is arranged in the middle part of the side wall of water side, with technique water system
System connection；2 entrance of gun barrel is located at the buffering side；2 tank deck of gun barrel setting balanced line with it is described
The connection of 1 lower part of quenching water column.
3 top of heavy oil tank is connected to gun barrel 2 and 1 tower reactor of quenching water column, and bottom is connected to petroleum pump 4.
15 top of heavy petrol stripper is provided with feed(raw material)inlet, is connected to heavy petrol feed pump 5；Overhead gas outlet
It is connected to in the middle part of the quenching water column 1；It is solidifying that the heavy petrol stripper 15 is provided with heavy petrol stripper reboiler 16, reboiler
Flow container 17；15 tower reactor of heavy petrol stripper is connected to the heavy petrol stripper reboiler 16, reboiler hot side pipeline and institute
State the connection of reboiler lime set tank 17.
During the work time, the method for separating heavy includes: from lightweight material pyrolysis product
Cracking gas from pyrolysis furnace is sent into quenching water column 1 after necessary cooling system is cooling, in quenching water column 1,
The chilled water (chw) of circulation makes cracking gas be further cooled to about 40 DEG C, and the dilution steam generation and heavy constituent in cracking gas are brought by chilled water (chw)
1 lower part of quenching water column, due to the difference of density, the heavy oil component of condensation sinks to quenching water column bottommost, through 1 bottom of quenching water column
Minimum point heavy oil discharge outlet 27 flows into heavy oil tank 3, and chilled water (chw) passes through chilling above heavy oil, through tower bottom chilled water (chw) outlet port 28
Water pump is sent into chilled water (chw) circulation, and gasoline and weight fuel oil ingredient are in the top, from the higher position side in 1 lower part of quenching water column
It is drawn in gun barrel 2.
Mixture into gun barrel 2 contains gasoline, fuel oil, process water and minute quantity heavy oil soluble in water,
Current stabilization buffering through tank, using with coalescing internal 13, in the middle part settle and separate of tank；Hydro carbons is agglomerated into big liquid by droplet
Drop, under the effect of gravity, most heavy heavy oil component is deposited to bottom in heavy oil side, is discharged into heavy oil tank 3 through tank bottom takeoff line；
The water of secondary weight is enriched at middle part, and the opening in the middle part of tank is expelled to technique water system；Most light hydro carbons floats on the top, through partition
14 overflow to the light oil side of tank, are sent into heavy petrol stripper 15 through heavy petrol feed pump 5 and strip, top gaseous phase sends quenching water column back to
1 middle section, tower reactor product are sent into downstream unit or send out battery limit (BL)；It buffers side and passes through takeoff line for a small amount of heavy oil of bottom long-term accumulation
It is emitted into heavy oil tank 3；Wherein, the boundary position of 2 middle part water of gun barrel is not higher than the bottom surface on partition 14 along and not less than tank.
The hydro carbons of light oil side is by light oil side tank bottom discharge outlet with being pumped into heavy petrol stripper 15.The heavy petrol stripping
15 heat source of tower uses low-pressure steam 18, and heavy petrol stripper reboiler 16, reboiler lime set tank 17 is arranged；The heavy petrol stripping
15 tower reactor of tower is connected to the heavy petrol stripper reboiler 16, and reboiler hot side pipeline is connected to the reboiler lime set tank 17,
Low-pressure steam pipeline is connected to heavy petrol stripper reboiler hot side.15 tower reactor product of heavy petrol stripper is C5s+ component 21,
It is sent into downstream unit or sends out battery limit (BL).
Embodiment 2:
As shown in figure 3, difference is with embodiment 1:
15 heat source of heavy petrol stripper uses high steam or cracking gas 22, high pressure steam line or cracking gas pipeline
Directly it is connected to 15 bottom of heavy petrol stripper；15 top of heavy petrol stripper sets feed(raw material)inlet, with the heavy petrol
Feed pump 5 is connected to；Overhead gas is exported and is connected in the middle part of the quenching water column 1, and tower bottom sets products export.Heavy petrol stripper 15
Tower reactor product is C8s+ component 23.
Embodiment 3:
As shown in figure 4, difference is with embodiment 1:
15 heat source of heavy petrol stripper use high steam 25 and cracking gas 24, cracking gas pipeline be directly connected to described in
15 bottom of heavy petrol stripper, high pressure steam line are directly connected to 15 middle part of heavy petrol stripper；The heavy petrol stripper 15
Top sets feed(raw material)inlet, is connected to the heavy petrol feed pump 5；Overhead gas is exported and is connected in the middle part of the quenching water column 1, tower
Bottom sets products export.15 tower reactor product of heavy petrol stripper is C8s+ component 26.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.
Claims (10)
1. a kind of device of the separating heavy from lightweight material pyrolysis product, which is characterized in that the device include quenching water column,
Gun barrel, heavy oil tank and heavy petrol stripper；
The quenching water column is connected to raw cracked gas feeding line, and quenching water column bottom is provided with heavy oil discharge outlet, with heavy oil
Tank connection, side are connected to by lateral line discharging pipeline with gun barrel, and top is provided with cracking gas outlet；Quenching water column bottom
Multiple chilled water (chw) outlet ports are provided with, top and middle part are provided with chilling water return port；
The gun barrel is connected to by least one takeoff line with heavy oil tank, and light oil takeoff line and heavy petrol stripper are passed through
Connection, side are provided with process water extraction mouth；
The heavy petrol stripper is connected to by top discharge pipeline with quenching water column, and bottom is provided with the extraction of heavy petrol product
Mouthful.
2. the device of the separating heavy according to claim 1 from lightweight material pyrolysis product, wherein the chilled water (chw)
The interface internal adapter tube of outlet port stretches out upwards, and the adapter tube other end is connected to chilling water pump；The heavy oil discharge outlet is arranged in institute
Quenching water column tower bottom minimum point is stated, is connected to one side entrance of heavy oil tank；It opens quenching water column lower part higher position side
Mouthful, it is connected to by lateral line discharging pipeline with the gun barrel entrance.
3. the device of the separating heavy according to claim 1 from lightweight material pyrolysis product, wherein the grease point
It is internally provided with coalescing internal and partition from tank, space in tank is divided into three parts: being buffering side close to coalescing internal side, leans on
Nearly partition side is light oil side, is water side between coalescing internal and partition；Each section tank bottom is respectively arranged with takeoff line, buffers side
It is connected to the takeoff line of water side with heavy oil tank entrance, the takeoff line of light oil side connects through heavy petrol feed pump and heavy petrol stripper
It is logical；The process water extraction mouth is arranged in the middle part of the side wall of water side, with process water system connectivity；The gun barrel entrance is located at
The buffering side；The gun barrel tank deck setting balanced line is connected to the quenching water column lower part.
4. the device of the separating heavy according to claim 1 from lightweight material pyrolysis product, wherein the heavy oil tank
Top is connected to gun barrel and quenching water column tower reactor, and bottom is connected to petroleum pump.
5. the device of the separating heavy according to claim 1 from lightweight material pyrolysis product, wherein the heavy petrol
Stripper top is provided with feed(raw material)inlet, is connected to heavy petrol feed pump；Connect in the middle part of overhead gas outlet and the quenching water column
It is logical；The heavy petrol stripper is provided with heavy petrol stripper reboiler, reboiler lime set tank；The heavy petrol stripper tower reactor
It is connected to the heavy petrol stripper reboiler, reboiler hot side pipeline is connected to the reboiler lime set tank.
6. a kind of method of the separating heavy from lightweight material pyrolysis product, which is characterized in that this method is in claim 1-5
Any one of described in device in carry out, this method comprises:
Cracking gas from pyrolysis furnace is sent into quenching water column and is further cooled down after cooling down, and the dilution in cracking gas is steamed
Vapour and heavy constituent are condensed, and the heavy oil of condensation from quenching water column bottom discharge to heavy oil tank, extract out from tower reactor and be sent into suddenly by chilled water (chw)
Circulating chilled water, the mixture containing gasoline, fuel oil and process water are sent into gun barrel by coalescence and settle further separation,
The process water isolated is sent into technique water system, and the gasoline isolated, fuel oil are sent into heavy petrol stripper, and what is stripped is light
Component sends quenching water column back to, and recombination is distributed into downstream unit or sends out battery limit (BL).
7. the method for the separating heavy according to claim 6 from lightweight material pyrolysis product, wherein gun barrel
It is internally provided with coalescing internal and partition；
Mixture containing gasoline, fuel oil and process water enters gun barrel from side, the current stabilization buffering through gun barrel,
Using coalescing internal, in the middle part settle and separate of gun barrel；Most heavy heavy oil component is heavy from the middle part of gun barrel
Tank bottom is dropped to, then is discharged into heavy oil tank；The water of secondary weight is enriched with above heavy oil component, from the process water of water-oil separating pot sidewall
It produces mouth and is expelled to technique water system, the boundary position of water is not higher than the bottom surface on partition along and not less than tank in the middle part of gun barrel；
Most light hydro carbons floats on the top, and the other side of gun barrel is overflowed to through partition, is sent into heavy petrol stripper stripping；Buffering
The heavy oil that bottom accumulates is emitted into heavy oil tank by side by takeoff line.
8. the method for the separating heavy according to claim 6 or 7 from lightweight material pyrolysis product, wherein described heavy
Gasoline stripping tower heat source uses low-pressure steam, and it is solidifying that the heavy petrol stripper is provided with heavy petrol stripper reboiler, reboiler
Flow container；The heavy petrol stripper tower reactor is connected to the heavy petrol stripper reboiler, and reboiler hot side pipeline boils again with described
The connection of device lime set tank；Low-pressure steam pipeline is connected to heavy petrol stripper reboiler hot side；Heavy petrol stripper tower reactor product is
C5s+ component.
9. the method for the separating heavy according to claim 6 or 7 from lightweight material pyrolysis product, wherein described heavy
Gasoline stripping tower heat source uses high steam or cracking gas, and high pressure steam line or cracking gas pipeline are directly connected to the heavy petrol
Stripper bottom, heavy petrol stripper tower reactor product are C8s+ component.
10. the method for the separating heavy according to claim 6 or 7 from lightweight material pyrolysis product, wherein described heavy
Gasoline stripping tower heat source uses high steam and cracking gas, and cracking gas pipeline is directly connected to heavy petrol stripper bottom, high
Pressure steam pipe line is directly connected in the middle part of heavy petrol stripper；Heavy petrol stripper tower reactor product is C8s+ component.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710822890.8A CN109486512B (en) | 2017-09-13 | 2017-09-13 | Device and method for separating heavy components from light raw material cracking product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710822890.8A CN109486512B (en) | 2017-09-13 | 2017-09-13 | Device and method for separating heavy components from light raw material cracking product |
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| CN109486512A true CN109486512A (en) | 2019-03-19 |
| CN109486512B CN109486512B (en) | 2021-01-08 |
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| CN114836237A (en) * | 2021-02-02 | 2022-08-02 | 中国石油化工股份有限公司 | Pyrolysis gas heat recovery device and method for reducing diameter of gasoline fractionating tower |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101948698A (en) * | 2010-10-14 | 2011-01-19 | 天津大学 | Novel energy-saving device for condensing and recovering oil shale in retorting oil gas and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101948698A (en) * | 2010-10-14 | 2011-01-19 | 天津大学 | Novel energy-saving device for condensing and recovering oil shale in retorting oil gas and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114836237A (en) * | 2021-02-02 | 2022-08-02 | 中国石油化工股份有限公司 | Pyrolysis gas heat recovery device and method for reducing diameter of gasoline fractionating tower |
| CN114836237B (en) * | 2021-02-02 | 2023-04-11 | 中国石油化工股份有限公司 | Pyrolysis gas heat recovery device and method for reducing diameter of gasoline fractionating tower |
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