CN207734627U - A kind of reboiler method negative pressure crude benzol Distallation systm - Google Patents
A kind of reboiler method negative pressure crude benzol Distallation systm Download PDFInfo
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- CN207734627U CN207734627U CN201721813019.3U CN201721813019U CN207734627U CN 207734627 U CN207734627 U CN 207734627U CN 201721813019 U CN201721813019 U CN 201721813019U CN 207734627 U CN207734627 U CN 207734627U
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- oil
- crude benzol
- poor
- benzene
- debenzolizing tower
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Abstract
The utility model is related to a kind of reboiler method negative pressure crude benzol Distallation systms, including debenzolizing tower, regenerator, reboiler, crude benzol or light benzene condensate cooler, crude benzol or light benzene backflash, benzene vapour cooler, de- benzene vacuum pump or injector, washing oil condensate cooler, fuel and vapor separator, oil gas cooler and regenerative vacuum pump or injector；The top of debenzolizing tower is rectifying section, and using tray structure, the lower part of debenzolizing tower is profit reduction and reserving section, using filling-material structure；Compared with existing crude benzol Distallation systm, the utility model has the remarkable advantages such as operating cost is low, environment protecting is good.
Description
Technical field
The utility model is related to coking chemical Product recycling technical fields more particularly to a kind of reboiler method negative pressure crude benzol to steam
Evaporate system.
Background technology
To reduce discharge of wastewater, recent coking industry occurs that (steam does not participate in directly without steaming process crude benzol distillation technique
Distillation process), this technique is, the technique that for debenzolizing tower provides heat oil-poor using diamond heating rich oil and cycling hot, the work
Crude benzol separation water is seldom during skill, greatly reduces the discharge of waste water.But tube furnace generates a large amount of exhaust gas and but causes
Certain exhaust gas discharge；The tubular type furnace exhaust heated simultaneously using coke-stove gas is difficult to meet coking chemistry industrial pollutants to arrange
Put standard, it is necessary to have mating emission-control equipment, investment cost higher；Although the tube furnace using BF gas heating can drop
SO in low exhaust gas2Content, but equipment is larger, and generation exhausted air quantity is more, and environment protecting is poor.Meanwhile using diamond heating rich oil and
Washing oil can lead to a large amount of cohesions, the coking of rich oil and washing oil, generate a large amount of residue oil, lead to the waste of washing oil, operating cost
It is high.
In conclusion at this stage without steaming process crude benzol distillation technique in operating cost, environmental protection etc. existing defects, it is anxious
It is to be solved.
Current coking industry extinguishing technique mostly uses dry coke quenching technique, which produces a large amount of high pressure superheater
Steam, this steam are usually used in generating electricity or be used in gas purification process.The utility model is the high temperature generated using dry coke quenching
Superheated steam heats the negative pressure crude benzol Distallation systm of rich oil and washing oil.
Invention content
The utility model provides a kind of reboiler method negative pressure crude benzol Distallation systm, with existing crude benzol Distallation systm phase
Than having the remarkable advantages such as operating cost is low, environment protecting is good.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of reboiler method negative pressure crude benzol Distallation systm, including debenzolizing tower, regenerator, reboiler, crude benzol or light benzene condensation
Cooler, crude benzol or light benzene backflash, benzene vapour cooler, de- benzene vacuum pump or injector, washing oil condensate cooler, oil and gas separation
Device, oil gas cooler and regenerative vacuum pump or injector；The regenerator is set to the lower section of debenzolizing tower, and it is poor that debenzolizing tower bottom sets heat
Oil export and the oil-poor entrance of heat；The oil-poor outlet of heat is sequentially connected the oil-poor pump of heat, poor oil-rich heat exchanger, oil-poor one by oil-poor pipeline
It is poor to set the oil-poor regenerating tube connection regenerator heat of heat on the oil-poor pipeline in the oil-poor pump downstream of heat for section cooler and oil-poor two-step cooling device
Oil-in；The top of debenzolizing tower is rectifying section, and using tray structure, the lower part of debenzolizing tower is profit reduction and reserving section, using filling-material structure；Essence
It evaporates and sets rich oil entrance on the debenzolizing tower of section bottom, the oil rich outlet of poor oil-rich heat exchanger is connected by saturated oil tube through rich oil heater
Connect the rich oil entrance of debenzolizing tower；The superheated steam entrance of rich oil heater was separately connected with the superheated steam entrance on regenerator
Vapours pipeline；Superheat steam pipeline is also connect with reboiler, and reboiler is additionally by regeneration washing oil pipeline connection debenzolizing tower bottom
The regeneration washing oil in portion exports and regeneration washing oil entrance；The steam (vapor) outlet on debenzolizing tower top is sequentially connected crude benzol or light by jet chimney
The phegma outlet of benzene condensate cooler, crude benzol or light benzene backflash, crude benzol or light benzene backflash is connected by reflux pipeline
The phegma entrance on debenzolizing tower top；The gas vent of crude benzol or light benzene backflash is sequentially connected benzene vapour cooler by gas pipeline
And de- benzene vacuum pump or injector；The oil gas vent on regenerator top is sequentially connected washing oil condensate cooler and oil by oil-gas pipeline
Vapour separator, fuel and vapor separator set washing oil outlet and incoagulable gas outlet, and incoagulable gas outlet passes through incoagulable gas pipe
Road is sequentially connected oil gas cooler and regenerative vacuum pump or injector.
The top side of the debenzolizing tower sets naphtalene oil extraction mouth.
Product crude benzol or light benzene outlet are set on crude benzol or the reflux pipeline in light benzene pump downstream.
The regenerator sets residue oil export, passes through residue oil-piping and pump connection residue slot.
Compared with prior art, the utility model has the beneficial effects that：
1) operating cost is low：Compared with existing no steaming process negative pressure crude benzol Distallation systm, the utility model is added using steam
Hot rich oil and washing oil, operation temperature is low, has effectively contained the slagging of washing oil, reduces the update of residue oil output and washing oil
Amount, reduces operating cost；
2) environment protecting is good：Compared with existing crude benzol Distallation systm, the utility model is not provided with tube furnace, not will produce pipe
Formula furnace exhaust reduces discharge amount of exhaust gas；Meanwhile the utility model crude benzol separation water yield is seldom, greatly reduces waste water row
Amount；
3) benzene vapour, the oil gas etc. that debenzolizing tower, regenerator top are separated are sent to coal gas system, ensure that the feature of environmental protection of system
And effective recycling of benezene material.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of reboiler method negative pressure crude benzol Distallation systm described in the utility model.
In figure：1. 2. regenerator of debenzolizing tower, 3. reboiler, 4. crude benzol or 5. crude benzol of light benzene condensate cooler or light benzene return
6. benzene vapour cooler 7. of chute takes off 10. oil gas of benzene vacuum pump or 8. washing oil condensate cooler of injector, 9. fuel and vapor separator
13. 14. poor oil-rich heat exchangers 15. of hot oil-poor pump of 11. regenerative vacuum pump of cooler or 12. crude benzol of injector or light benzene pump
16. oil-poor two-step cooling device of oil-poor one-step cooling device, 17. rich oil heater
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of reboiler method negative pressure crude benzol Distallation systm described in the utility model, including debenzolizing tower 1, regeneration
Device 2, reboiler 3, crude benzol or light benzene condensate cooler 4, crude benzol or light benzene backflash 5, benzene vapour cooler 6, de- benzene vacuum pump or
Injector 7, washing oil condensate cooler 8, fuel and vapor separator 9, oil gas cooler 10 and regenerative vacuum pump or injector 11；It is described again
Raw device 2 is set to the lower section of debenzolizing tower 1, and 1 bottom of debenzolizing tower sets the oil-poor outlet of heat and the oil-poor entrance of heat；The oil-poor outlet of heat passes through oil-poor
It is poor that pipeline is sequentially connected the oil-poor pump 13 of heat, poor oil-rich heat exchanger 14, oil-poor one-step cooling device 15 and oil-poor two-step cooling device 16, heat
The oil-poor entrance of heat of the oil-poor regenerating tube connection regenerator of heat is set on the oil-poor pipeline in 13 downstream of oil pump；The top of debenzolizing tower 1 is essence
Section is evaporated, using tray structure, the lower part of debenzolizing tower 1 is profit reduction and reserving section, using filling-material structure；It is set on the debenzolizing tower 1 of rectifying section bottom
Rich oil entrance, the oil rich outlet of poor oil-rich heat exchanger 14 connect the rich oil of debenzolizing tower 1 by saturated oil tube through rich oil heater 17
Entrance；The superheated steam entrance of rich oil heater 17 is separately connected superheat steam pipeline with the superheated steam entrance on regenerator 2；
Superheat steam pipeline is also connect with reboiler 3, and reboiler 3 connects the regeneration of 1 bottom of debenzolizing tower additionally by regeneration washing oil pipeline
Washing oil exports and regeneration washing oil entrance；The steam (vapor) outlet on debenzolizing tower top is sequentially connected crude benzol by jet chimney or light benzene condensation is cold
But the phegma of device 4, crude benzol or light benzene backflash 5, crude benzol or light benzene backflash 5 is exported connects debenzolizing tower by reflux pipeline
The phegma entrance on top；The gas vent of crude benzol or light benzene backflash 5 is sequentially connected benzene vapour cooler 6 by oil-gas pipeline and takes off
Benzene vacuum pump or injector 7；The oil gas vent that regenerator 2 pushes up is sequentially connected washing oil condensate cooler 8 and oil by oil-gas pipeline
Vapour separator 9, fuel and vapor separator 9 set washing oil outlet and incoagulable gas outlet, and incoagulable gas outlet passes through incoagulable gas
Pipeline is sequentially connected oil gas cooler 10 and regenerative vacuum pump or injector 11.
The top side of the debenzolizing tower 1 sets naphtalene oil extraction mouth.
Product crude benzol or light benzene outlet are set on the reflux pipeline in 12 downstreams of crude benzol or light benzene pump.
The regenerator 2 sets residue oil export, passes through residue oil-piping and pump connection residue slot.
It is as follows using a kind of crude benzol distillation technique process of reboiler method negative pressure crude benzol Distallation systm described in the utility model：
1) it is sent into poor oil-rich heat exchanger 14 from the washing oil washed in benzene column absorption coal gas after benezene material, with debenzolizing tower bottom by heat
Enter rich oil heater 17 after 210~245 DEG C of oil-poor heat exchange of heat that oil-poor pump 13 is drawn, enters after being heated to 190~220 DEG C de-
Benzene column 1；After heat exchange it is oil-poor again through oil-poor one-step cooling device 15 and oil-poor two-step cooling device 16 cooling after be sent to final cooling zone use
In washing benzene；
2) it in debenzolizing tower 1, stripped, distilled under the vacuum degree of -40~-70KPa, a part is produced from debenzolizing tower bottom
Circulating washing oil is sent to reboiler 3, after 300~550 DEG C of high pressure superheated steams heating come using dry quenching system, returns again to de- benzene
Tower 1, heat source and stripping component as crude benzol distillation；
3) 55~70 DEG C of crude benzene vapors or light benzene steam of 1 tower top of debenzolizing tower effusion, through crude benzol or light benzene condensate cooler 4
Enter crude benzol or light benzene backflash 5 afterwards to be detached, the incoagulable gas after separation after benzene vapour cooler 6 is further cooling,
It is sent into coal gas system with de- benzene vacuum pump or injector 7；Liquid after separation carries out grease point in crude benzol or light benzene backflash 5
From, it uses crude benzol or light benzene to pump 12 and send the crude benzol or light benzene that a part is isolated to 1 tower top of debenzolizing tower as flowing back, remaining conduct
Product is sent outside；
4) naphtalene oil fraction is drawn in debenzolizing tower side line, to reduce oil-poor amount containing naphthalene；The naphtalene oil fraction of extraction enters residue slot,
Periodically sent outside with pump；
5) it is to keep circulating washing oil quality, the circulating washing oil for drawing 1%~1.5% is sent into regenerator 2,200~230
DEG C, carry out distillation regeneration under the vacuum degree of -75~-95KPa, regeneration heat source is the high temperature super heated steam from dry quenching system；
6) the regeneration residue at debenzolizing tower bottom is discharged into residue slot, is periodically sent outside with pump；The incoagulable gas at debenzolizing tower bottom is through washing
After oily condensate cooler 8, fuel and vapor separator 9 and oil and gas cooler 10 cool down, sent to coal gas with regenerative vacuum pump or injector 11
System；
During system operation, the operating pressure subatmospheric of debenzolizing tower 1 and regenerator 2 is in negative pressure state.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (4)
1. a kind of reboiler method negative pressure crude benzol Distallation systm, which is characterized in that including debenzolizing tower, regenerator, reboiler, crude benzol or
Light benzene condensate cooler, crude benzol or light benzene backflash, benzene vapour cooler, de- benzene vacuum pump or injector, washing oil condensate cooler,
Fuel and vapor separator, oil gas cooler and regenerative vacuum pump or injector；The regenerator is set to the lower section of debenzolizing tower, debenzolizing tower bottom
Portion sets the oil-poor outlet of heat and the oil-poor entrance of heat；The oil-poor outlet of heat is sequentially connected the oil-poor pump of heat by oil-poor pipeline, lean and fat oil exchanges heat
Device, oil-poor one-step cooling device and oil-poor two-step cooling device set heat oil-poor regenerating tube connection on the oil-poor pipeline in the oil-poor pump downstream of heat
The oil-poor entrance of regenerator heat；The top of debenzolizing tower is rectifying section, and using tray structure, the lower part of debenzolizing tower is profit reduction and reserving section, is used
Filling-material structure；Rich oil entrance is set on the debenzolizing tower of rectifying section bottom, the oil rich outlet of poor oil-rich heat exchanger is passed through by saturated oil tube
Rich oil heater connects the rich oil entrance of debenzolizing tower；The superheated steam entrance of rich oil heater enters with the superheated steam on regenerator
Mouth is separately connected superheat steam pipeline；Superheat steam pipeline is also connect with reboiler, and reboiler is additionally by regeneration washing oil pipeline
Connect the outlet of regeneration washing oil and the regeneration washing oil entrance of debenzolizing tower bottom；The steam (vapor) outlet on debenzolizing tower top by jet chimney successively
Crude benzol or light benzene condensate cooler, crude benzol or light benzene backflash are connected, the phegma outlet of crude benzol or light benzene backflash passes through back
Flow liquid pipeline connects the phegma entrance on debenzolizing tower top；The gas vent of crude benzol or light benzene backflash is connected successively by gas pipeline
Connect benzene vapour cooler and de- benzene vacuum pump or injector；It is cold that the oil gas vent on regenerator top by oil-gas pipeline is sequentially connected washing oil
Solidifying cooler and fuel and vapor separator, fuel and vapor separator set washing oil outlet and incoagulable gas outlet, and incoagulable gas outlet passes through
Incoagulable gas pipeline is sequentially connected oil gas cooler and regenerative vacuum pump or injector.
2. a kind of reboiler method negative pressure crude benzol Distallation systm according to claim 1, which is characterized in that the debenzolizing tower
Top side sets naphtalene oil extraction mouth.
3. a kind of reboiler method negative pressure crude benzol Distallation systm according to claim 1, which is characterized in that crude benzol or light benzene pump
Product crude benzol or light benzene outlet are set on the reflux pipeline in downstream.
4. a kind of reboiler method negative pressure crude benzol Distallation systm according to claim 1, which is characterized in that the regenerator is set
Residue oil export passes through residue oil-piping and pump connection residue slot.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813019.3U CN207734627U (en) | 2017-12-22 | 2017-12-22 | A kind of reboiler method negative pressure crude benzol Distallation systm |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813019.3U CN207734627U (en) | 2017-12-22 | 2017-12-22 | A kind of reboiler method negative pressure crude benzol Distallation systm |
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| CN207734627U true CN207734627U (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890684A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of reboiler method negative pressure crude benzol Distallation systm |
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2017
- 2017-12-22 CN CN201721813019.3U patent/CN207734627U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890684A (en) * | 2017-12-22 | 2018-04-10 | 中冶焦耐(大连)工程技术有限公司 | A kind of reboiler method negative pressure crude benzol Distallation systm |
| CN107890684B (en) * | 2017-12-22 | 2023-06-16 | 中冶焦耐(大连)工程技术有限公司 | Reboiler method negative pressure crude benzol distillation system |
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