CN208748028U - A kind of anti-coke powder carrying device of delayed coker fractionator side line - Google Patents
A kind of anti-coke powder carrying device of delayed coker fractionator side line Download PDFInfo
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- CN208748028U CN208748028U CN201820778695.XU CN201820778695U CN208748028U CN 208748028 U CN208748028 U CN 208748028U CN 201820778695 U CN201820778695 U CN 201820778695U CN 208748028 U CN208748028 U CN 208748028U
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- spray equipment
- coke powder
- side line
- fractionating column
- delayed coker
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Abstract
The utility model discloses a kind of anti-coke powder carrying device of delayed coker fractionator side line, which includes: spray equipment, heavy gas oil accumulator, high-temperature oil gas distributor, wax slop pump, heat exchanger and radiation pump；The spray equipment includes upper spray equipment and lower spray equipment, and the upper spray equipment and lower spray equipment are separately positioned on the lower part of the fractionating column；The heavy gas oil accumulator is located at the top of upper spray equipment；And the heavy gas oil accumulator is pumped by the wax slop, heat exchanger and recuperator bypass are sequentially connected with to form circulation loop with the upper spray equipment and lower spray equipment；The high-temperature oil gas distributor is located at the lower section of lower spray equipment；The radiation pump is connect with the lower part of the fractionating column.Device provided by the utility model can by Fractionator Bottom STRENGTH ON COKE tower top come high-temperature oil gas carry out high efficiency spray washing, effectively coke powder is controlled in the bottom of fractionating column, coke powder is reduced to enter in each sideline product of fractionating column, it avoids sideline product from carrying coke powder and enters downstream unit, to influence the catalyst of downstream hydrogenation plant.
Description
Technical field
The utility model relates to the anti-coke powder carrying devices of delayed coker fractionator side line.
Background technique
Existing delay coking process be it is a kind of by heavy oil through depth thermal cracking be converted into gas, it is light in matter fraction oil and burnt
The heavy oil deep processing technique of charcoal has the characteristics that de- charcoal is thorough, process is simple, technology maturation, plant investment are lower, has become
For one of the important process in Heavy Oil Processing Technology.
Fractionating column is a kind of chemical industry equipment being fractionated to mixed volatilization liquid.Delay coking process basic principle is exactly
Using residual oil as raw material, it is anti-to be quickly transferred to progress depth thermal cracking in coke drum for heated stove heating to high temperature (500 DEG C or so)
It answers, i.e., pyrogenetic reaction is deferred in coke drum and is carried out, mitigate tube coking degree, extend the device cycle of operation.Coke drum is burnt
Change process generate high-temperature oil gas from coke drum top to fractionating column in be fractionated, obtain coking dry gas, gasoline, diesel oil, wax
Oil or wax slop product, the coke stayed in coke drum are handled through decoking system, can get coke product (also referred to as petroleum coke).
The characteristics of due to delay coking process, top of coke tower high-temperature oil gas are easy a large amount of coke powders that carry and enter fractionating column, pass
Uniting, fractionating column tower tray washing coke powder ability is poor, and the coke powder of different-grain diameter is fractionated each lateral line withdrawal function of tower, the lesser coke of partial size
Powder is extracted out in fractionator overhead, and the biggish coke powder of partial size is fractionated tower wax oil section (or wax slop section) extraction, causes fractionating column each
Sideline product carries coke powder, and product carries coke powder and gathers in heat exchanger, influences the heat transfer effect of device heat exchanger.Product enters
The service life of downstream hydrogenation device catalyst is seriously affected after downstream unit again.Domestic Petrochemical Enterprises generally use sideline product to go out to fill
The method for increasing high-precision filter before setting solves the problems, such as that oil product carries coke powder, and there are also some enterprises to be increased, be increased using coke drum
Big method carries coke powder problem, and the method for giving up infusion using low processing capacity or coke drum to reduce coke drum high-temperature oil gas
Coke powder problem is carried to reduce top of coke tower high-temperature oil gas, these methods not only increase plant construction cost, also add enterprise
The operating cost of industry reduces the benefit of enterprise.
The more problem of coke powder is carried for delayed coking unit sideline product, researches and develops and a kind of prevents fractionating column sideline product
The device for carrying coke powder is just provided with important meaning.
Summary of the invention
In order to solve the above technical problems, the purpose of the utility model is to provide a kind of fractionating column sideline products that prevents to carry coke
The device of powder, the coke powder that the utility model effectively slows down each sideline product carrying different-grain diameter of delayed coking unit fractionating column go out to fill
Set, improve to the even running degree of device, can by Fractionator Bottom STRENGTH ON COKE tower top come high-temperature oil gas sprayed,
It effectively reduces each sideline product carrying coke powder of fractionating column and enters downstream unit, and reduce the influence to downstream unit catalyst.
The purpose of this utility model is realized by technical solution below:
A kind of anti-coke powder carrying device of delayed coker fractionator side line, comprising: described device includes: spray equipment, weight wax
Oily oil sump tank, high-temperature oil gas distributor, wax slop pump, heat exchanger and radiation pump；
The spray equipment includes upper spray equipment and lower spray equipment, and the upper spray equipment and lower spray equipment are distinguished
The lower part of the fractionating column is set；
The heavy gas oil accumulator is located at the top of upper spray equipment；And the heavy gas oil accumulator passes through the wax slop
Pump, heat exchanger and recuperator bypass and the upper spray equipment and lower spray equipment are sequentially connected with to form circulation loop；
The high-temperature oil gas distributor is located at the lower section of lower spray equipment；
The radiation pump is connect with the lower part of the fractionating column.
Compared with prior art, one or more embodiments of the utility model can have following advantage:
The device is located at fractionating column lower part, replaces original Fractionator Bottom herringbone baffle, can be by focusing in Fractionator Bottom
The high-temperature oil gas that charcoal tower top comes carries out high efficiency spray washing, effectively controls coke powder in the bottom of fractionating column, reduces coke powder and enters
In each sideline product of fractionating column, avoids sideline product from carrying coke powder and enter downstream unit, to influence urging for downstream hydrogenation plant
Agent.
It is designed by unique structure and control program, high-efficient washing effect is all had to the coke powder of different-grain diameter, completely
The condition of device can be gone out without high-precision filter by reaching fractionating column sideline product, both ensure that fractionating column sideline product was not taken
Band coke powder goes out device, in turn ensures the long-term operation of device.The present invention has control device recycle ratio simple, quickly obvious
Effect ensure that device production is steady, and reducing device may cause the economic loss of unplanned shutdown, and frequently clear up
The workload of filter.The present invention can meet the needs of technical fields such as petroleum, chemical industry.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram that the anti-coke powder of delayed coker fractionator side line carries.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below in conjunction with examples and drawings pair
The utility model embodiment is described in further detail.
As shown in Figure 1, the apparatus structure carried for the anti-coke powder of 11 side line of delayed coker fractionator, comprising: spray equipment, again
Wax oil oil sump tank 12, high-temperature oil gas distributor 13, wax slop pump 14, heat exchanger 15 and radiation pump 16；
The spray equipment includes upper spray equipment 17 and lower spray equipment 18, the upper spray equipment and lower spray equipment
It is separately positioned on the lower part of the fractionating column 11；
The heavy gas oil accumulator is located at the top of upper spray equipment；And the heavy gas oil accumulator passes through the wax slop
Pump, heat exchanger and recuperator bypass and the upper spray equipment and lower spray equipment are sequentially connected with to form circulation loop；
The high-temperature oil gas distributor is located at the lower section of lower spray equipment；
The radiation pump is connect with the lower part of the fractionating column.
Spacing between above-mentioned upper spray equipment and lower spray equipment is 1.0~3.0 meters；Lower spray equipment and high-temperature oil gas
5~10mm meters of distributor spacing；Upper layer and lower layer spray equipment is connected by adapter tube with outside spray medium.Spray medium is (weight)
Wax oil, 350~380 DEG C of temperature, 0.5~1.5MPa of pressure.
Multiple nozzles are provided on above-mentioned upper spray equipment and lower spray equipment, the nozzle is uniformly distributed in the spray
On device.Nozzle interior uses special helical structure, the solid centrum shape of shape of medium for spraying nozzle, and coupling apparatus
Use condition, the atomizing particle size of spray medium needed for capable of being reached by the control of rate-of flow size.Every layer sprays facility
Multiple nozzle spray areas are the 100% of tower body sectional area, and the spray coverage rate that upper layer and lower layer spray facility is 200%, are reached
The effect of high-temperature oil gas spray washing coke powder.
Above-mentioned upper spray equipment and lower spray equipment respectively include: tower body bracing ring, fixed cross beam, nozzle, distribution adapter tube,
Connecting flange, cross-over sub, tower body mouthpiece and anchor ear.
Above-mentioned recuperator bypass includes heat exchange thermal bypass 19 and the cold bypass 20 that exchanges heat, and is separately connected the both ends of heat exchanger.By
(weight) wax oil pump is extracted out from fractionating column (weight) wax oil oil sump tank, with the cold and hot bypass of composition before heat exchange after heat exchanger exchanges heat, is controlled
System spray medium temperature, temperature spot is related with control device recycle ratio, (weight) wax oil pass through again up and down flow control valve enter divide
Evaporate tower spray equipment.
Device provided by the above embodiment further includes the circulating pump 21 of spray flow orifice plate, control valve and tower bottom setting.
Above-mentioned (weight) wax oil oil sump tank is above upper spray equipment, between the two away from 2~4 meters.Spraying medium is from (weight) wax
Oily oil sump tank is gone out by (weight) wax oil pumping, by the heat exchange thermal bypass of heat exchanger, the cold bypass of heat exchange, according to device recycle ratio control
System needs to automatically control (weight) wax oil temperature, then is connected after being controlled by upper and lower spray flow with upper and lower spray equipment.
The implementation process of above-described embodiment are as follows:
When top of coke tower high-temperature oil gas enters fractionating column lower part, rise after distributor is distributed, since oil gas gas velocity is very fast,
The coke powder that oil gas carries different-grain diameter rises together, the spray washing through upper layer and lower layer spray equipment.Lower spray equipment flow control
System is smaller, and spray atomizing size droplet diameter is larger, can wash away the biggish coke powder of partial size in oil gas.Upper spray equipment flow control phase
To larger, atomizing effect is preferable, and drop is smaller, can wash away the lesser coke powder of partial size in oil gas.High-temperature oil gas passes through upper and lower two
It is relatively fewer that coke powder is carried after layer spray equipment, then it is just few to enter coke powder in fractionating column sideline product.
The utility model control program is as follows: upper spray flow controls 15~35t/h, and upper spray flow controls 10~30t/
H, (weight) wax oil spray temperature and control 350~380 DEG C, and spray temperature control is low, then device recycle ratio is big, conversely, device recycles
Than small.Property that the quality of fractionating column sideline product, device process raw material, Long-term Operation of Fired Heaters parameter determination device circulation
Than the size of control.
Although embodiment disclosed by the utility model is as above, the content is only to facilitate understand that this is practical
Novel and use embodiment, is not intended to limit the utility model.Skill in any the utility model technical field
Art personnel can be in the formal and details of implementation under the premise of not departing from spirit and scope disclosed by the utility model
On make any modification and variation, but the scope of patent protection of the utility model, must still be defined with appended claims
Range subject to.
Claims (6)
1. a kind of anti-coke powder carrying device of delayed coker fractionator side line, which is characterized in that described device include: spray equipment,
Heavy gas oil accumulator (12), high-temperature oil gas distributor (13), wax slop pump (14), heat exchanger (15) and radiation pump (16)；
The spray equipment includes upper spray equipment (17) and lower spray equipment (18), the upper spray equipment (17) and lower spray
Device (18) is separately positioned on the lower part of the fractionating column (11)；
The heavy gas oil accumulator (12) is located at the top of upper spray equipment (17)；And the heavy gas oil accumulator (12) passes through weight wax
Oil pump (14), heat exchanger (15) and recuperator bypass and the upper spray equipment (17) and lower spray equipment (18) are sequentially connected with shape
At circulation loop；
The high-temperature oil gas distributor (13) is located at the lower section of lower spray equipment (18)；
The radiation pump (16) connect with the lower part of the fractionating column (11).
2. the anti-coke powder carrying device of delayed coker fractionator side line as described in claim 1, which is characterized in that the upper spray
Spacing between device (17) and lower spray equipment (18) is 1.0~3.0 meters.
3. the anti-coke powder carrying device of delayed coker fractionator side line as described in claim 1, which is characterized in that the upper spray
Multiple nozzles are respectively arranged on device (17) and lower spray equipment (18), the nozzle is uniformly distributed in the upper spray equipment
On lower spray equipment.
4. the anti-coke powder carrying device of delayed coker fractionator side line as described in claim 1, which is characterized in that the upper spray
Device (17) and lower spray equipment (18) respectively include: tower body bracing ring, fixed cross beam, nozzle, distribution adapter tube, connecting flange,
Cross-over sub, tower body mouthpiece and anchor ear.
5. the anti-coke powder carrying device of delayed coker fractionator side line as described in claim 1, which is characterized in that the heat exchanger
Bypass includes heat exchange thermal bypass (19) and the cold bypass (20) of heat exchange, is separately connected the both ends of heat exchanger (15).
6. the anti-coke powder carrying device of delayed coker fractionator side line as described in claim 1, which is characterized in that described device is also
Circulating pump (21) including the setting of spray flow orifice plate, control valve and tower bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778695.XU CN208748028U (en) | 2018-05-24 | 2018-05-24 | A kind of anti-coke powder carrying device of delayed coker fractionator side line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820778695.XU CN208748028U (en) | 2018-05-24 | 2018-05-24 | A kind of anti-coke powder carrying device of delayed coker fractionator side line |
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| CN208748028U true CN208748028U (en) | 2019-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641742A (en) * | 2018-05-24 | 2018-10-12 | 董国良 | A kind of anti-coke powder carrying device of delayed coker fractionator side line |
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2018
- 2018-05-24 CN CN201820778695.XU patent/CN208748028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641742A (en) * | 2018-05-24 | 2018-10-12 | 董国良 | A kind of anti-coke powder carrying device of delayed coker fractionator side line |
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