CN2915211Y - Highly efficient combined column tray of coking fractional column - Google Patents
Highly efficient combined column tray of coking fractional column Download PDFInfo
- Publication number
- CN2915211Y CN2915211Y CN 200620085962 CN200620085962U CN2915211Y CN 2915211 Y CN2915211 Y CN 2915211Y CN 200620085962 CN200620085962 CN 200620085962 CN 200620085962 U CN200620085962 U CN 200620085962U CN 2915211 Y CN2915211 Y CN 2915211Y
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- China
- Prior art keywords
- column plate
- column
- valve
- plate
- fractional distillation
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a high efficiency combination board for coke fractionating towe, which consists of a combination of a plurality of boards. The central area of the boards is a rectangular area; both sides of the boards are arc shaped area; apertures are spread over the boards. The boards is characteristics in that: three to four boards without floating components are mounted beneath the wax elicitation layer of the coke fractionating tower, and the boards with floating components are mounted above the wax elicitation layer of the fractionating tower. The utility model combines the boards with or without floating components to improve the anti-concretion capability of the upper part and the anti-burnt capability of the lower part, which lead the fractionating tower better acclimatize to the separation of the coke oil gas with the coke moisture, and to get an optimized result. The utility model has the advantages of high efficiency, bringing out less coke powder, better quality of drawing out wax, which is suitable primarily for coke fractionating tower, petroleum refinement, chemistry industry and other separation devices as well.
Description
Technical field
The utility model relates to the efficient combined column plate of a kind of coking fractional distillation column, belongs to the accessory of chemical separating equipment.
Background technology
Separation process is the important process process of petroleum refining and chemical engineering industry, and its equipment mainly contains plate column and packed tower, and coking fractional distillation column mainly uses plate column.As the critical component in the plate column, but column plate can be divided into the valve plate that float element is arranged and not have column plate two classes of float element.For valve plate with float element, as various round float valves, stripe shape float valve etc., leak and entrainment though can be good at reducing, increase operating flexibility, but the unicity of airflow direction when passing through column plate owing to gas, make rectangular area liquid layer became uneven on the column plate, and serious liquid holdup phenomenon appears in the arcuate region on column plate, make effective mass transfer area reduce, the result shows that diesel component is too much in the extraction wax oil, and this phenomenon shows that mainly the extraction of coking fractional distillation column wax oil is with upper tower segment.Because the tenor of coking raw material-residual oil is higher, coking fractional distillation column upper column section ubiquity the salt crust phenomenon, and salt crust seriously can influence the heat and mass transport of column plate.For the column plate that does not contain float element, as present use jet tray (be mainly used in coking fractional distillation column wax oil extract out following 3-4 layer column plate) more widely, owing to rationally utilized gas kinetic energy, the pressure that has lowered column plate falls, and make column plate be difficult for stopping up, but the liquid on the column plate is constantly quickened by air-flow, liquid was with from column plate rapidly, the time of staying is very brief, and gas-liquid has little time abundant contact, causes the decline of mass-transfer efficiency.And because gas-liquid injection, liquid is in decentralized photo, and the drop that is dispelled is difficult for coalescent again, makes the coke powder of carrying secretly be carried to the upper strata column plate, makes to extract out in the wax oil to carry coke powder secretly.
Summary of the invention
The purpose of this utility model is to provide a kind of coking fractional distillation column efficient combined column plate, and top resistive connection salt ability is strong, and the bottom anti-coking performance is strong, and mass-transfer efficiency height, coke powder are carried secretly few, and extraction wax oil quality is good.
The efficient combined column plate of coking fractional distillation column described in the utility model, each layer column plate that comprises combination, the centre of column plate is the rectangular area, the both sides of column plate are arcuate region, be distributed with perforate on the column plate, its coking fractional distillation column wax oil is extracted the column plate that following 3-4 layer column plate adopts does not have float element out, and the coking fractional distillation column wax oil is extracted the column plate that above column plate adopts float element out.
Wherein:
Do not have to be distributed with ligulate hole and K shape hole on the column plate of float element, the composite plate by tongue hole and the combination of K shape hole under the pressure drop prerequisite that keeps low column plate, can reduce the effect of carrying secretly of STRENGTH ON COKE powder on the one hand; Setting up of K shape hole prevented the coke powder deposition on the column plate on the other hand, avoided the coking on the column plate, further increased the anti-blockage capability of column plate.
The column plate that float element is arranged is a valve plate, column plate is provided with bar shaped valve opening and K shape hole, composite plate by float valve, valve opening and the combination of K shape hole, be fitted with rectangular valve on the bar shaped valve opening, the float valve front end is little, and the rear end is big, and the both sides, top have flange, middle punching press has the ligulate hole, and the rear and front end is provided with the valve leg.The ligulate hole plays guide effect to liquid on the one hand, and is lower in gas speed on the other hand, and when float valve was not all opened, even bubbling in the bubbling zone enlarged markedly column plate high efficiency scope on the column plate.
The outward flange of float valve flange is designed to profile of tooth, and float valve rises the back can evenly be disperseed by the gas that both sides enter liquid layer, makes gas-liquid two-phase be able to more fully contact, and increases mass transfer force, improves mass-transfer efficiency.
With the preceding end valve leg design of float valve be longer than back end valve leg, promptly the preceding end valve leg of float valve is long, back end valve short legs.After float valve is opened, front end is higher than the rear end, when entering liquid layer by valve opening, gas just formed forward propulsion to liquid, thereby reduced the gradient of liquid level on the column plate, make the gas-liquid on the column plate distribute more even, further increase mass transfer force, improve mass-transfer efficiency, increase the disposal ability of tower.
Ligulate hole in the middle of the float valve is established two, distributes along liquid flow path direction on the column plate, can further improve the ligulate hole to the guide effect of liquid with to the even regulating action of bubbling in the bubbling zone.
Arrange along the liquid flow path direction with major axis at the rectangular area of column plate valve opening, the arcuate region valve opening on column plate is preferably arranged along the suitable arc direction of column plate with major axis, and has K shape hole.When allowing gas enter liquid layer, promote liquid and flow, eliminated the trapping phenomena of arcuate region liquid on the column plate, make gas-liquid two-phase be able to abundant contact with suitable arc direction by column plate; Increase disturbance at short-axis direction, the anti-phase back-mixing of liquid stream reduces, and increases mass transfer force, improves mass-transfer efficiency.K shape hole set up the air blowing that has increased on the tray surfaces, prevented the deposition of the salts substances on the column plate, effectively avoided the salt crust tendency of bottom tower section.
The utility model by will there not being float element column plate and have the column plate of float element to be used in combination, the top resistive connection salt ability and the bottom anti-coking performance of tower have been improved, make whole coking fractional distillation column further adapt to separating of cooking gas and coking oil vapour, reach a comprehensive optimization effect, mass-transfer efficiency height, coke powder are carried secretly few, and extraction wax oil quality is good, mainly be applicable to coking fractional distillation column, also can be applied in other separation equipment of petroleum refining, chemical engineering industry.
Description of drawings
Fig. 1, the utility model one embodiment do not have the tower plate structure schematic diagram of float element.
Fig. 2, the utility model one embodiment have the tower plate structure schematic diagram of float element.
Fig. 3, float valve structural representation.
The vertical view of Fig. 4, Fig. 4.
Fig. 5, ligulate pore structure schematic diagram.
The vertical view of Fig. 6, Fig. 6.
Fig. 7, K shape pore structure schematic diagram.
The vertical view of Fig. 8, Fig. 8.
Among the figure: 1, column plate 2, ligulate hole 3, K shape hole 4, arcuate region 5, rectangular area 6, column plate 7, valve opening 8, K shape hole 9, arcuate region 10, rectangular area 11, float valve 12, preceding end valve leg 13, profile of tooth flange 14, ligulate hole 15, back end valve leg.
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment.
The efficient combined column plate of coking fractional distillation column described in the utility model, each layer column plate that comprises combination, the centre of column plate is the rectangular area, the both sides of column plate are arcuate region, be distributed with perforate on the column plate, its coking fractional distillation column wax oil is extracted the column plate that following 3-4 layer column plate adopts does not have float element out, and the coking fractional distillation column wax oil is extracted the column plate that above column plate adopts float element out, wherein:
As shown in Figure 1, do not have to be distributed with ligulate hole 2 and K shape hole 3 on the column plate 1 of float element, ligulate hole and K shape Kongzui are good spaced apart.
Shown in Fig. 2,3,4, there is the column plate 6 of float element to be valve plate, column plate 6 is provided with bar shaped valve opening 7 and K shape hole 8, be fitted with rectangular valve 11 on the bar shaped valve opening 7, float valve 11 front ends are little, and the rear end is big, the both sides, top have flange, and the outward flange of float valve flange is profile of tooth, form profile of tooth flange 13, middle punching press has ligulate hole 14, ligulate hole 14 has two, distributes along liquid flow path direction on the column plate, and the rear and front end is provided with valve leg 12,15, preceding end valve leg 12 length, back end valve leg 15 weak points.Arrange along the liquid flow path direction with major axis at the rectangular area of column plate 6 valve opening, the arcuate region valve opening 7 on column plate 6 is arranged along the suitable arc direction of column plate with major axis, and has K shape hole, and valve opening and K shape Kongzui are good spaced apart.
Claims (7)
1, the efficient combined column plate of a kind of coking fractional distillation column, each layer column plate that comprises combination, the centre of column plate is the rectangular area, the both sides of column plate are arcuate region, be distributed with perforate on the column plate, it is characterized in that the following 3-4 layer column plate of coking fractional distillation column wax oil extraction adopts the column plate that does not have float element, the coking fractional distillation column wax oil is extracted the column plate that above column plate adopts float element out.
2, the efficient combined column plate of coking fractional distillation column according to claim 1 is characterized in that not having being distributed with ligulate hole and K shape hole on the column plate of float element.
3, the efficient combined column plate of coking fractional distillation column according to claim 1, it is characterized in that it is valve plate that the column plate of float element is arranged, column plate is provided with bar shaped valve opening and K shape hole, be fitted with rectangular valve on the bar shaped valve opening, the float valve front end is little, and the rear end is big, and the both sides, top have flange, middle punching press has the ligulate hole, and the rear and front end is provided with the valve leg.
4, the efficient combined column plate of coking fractional distillation column according to claim 3 is characterized in that the outward flange of float valve flange is profile of tooth.
5, the efficient combined column plate of coking fractional distillation column according to claim 4 is characterized in that the preceding end valve leg of float valve is long, back end valve short legs.
6, the efficient combined column plate of coking fractional distillation column according to claim 5 is characterized in that the ligulate hole in the middle of the float valve has two, distributes along liquid flow path direction on the column plate.
7, according to the efficient combined column plate of the described coking fractional distillation column of the arbitrary claim of claim 3-6, it is characterized in that arranging along the liquid flow path direction with major axis at the rectangular area of column plate valve opening, arcuate region valve opening on column plate is arranged along the suitable arc direction of column plate with major axis, and has K shape hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085962 CN2915211Y (en) | 2006-06-20 | 2006-06-20 | Highly efficient combined column tray of coking fractional column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620085962 CN2915211Y (en) | 2006-06-20 | 2006-06-20 | Highly efficient combined column tray of coking fractional column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2915211Y true CN2915211Y (en) | 2007-06-27 |
Family
ID=38186114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620085962 Expired - Fee Related CN2915211Y (en) | 2006-06-20 | 2006-06-20 | Highly efficient combined column tray of coking fractional column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2915211Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200614A (en) * | 2018-10-23 | 2019-01-15 | 常州大学 | A kind of tower plate structure and design method for eliminating gas phase bias current |
-
2006
- 2006-06-20 CN CN 200620085962 patent/CN2915211Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200614A (en) * | 2018-10-23 | 2019-01-15 | 常州大学 | A kind of tower plate structure and design method for eliminating gas phase bias current |
| CN109200614B (en) * | 2018-10-23 | 2020-10-23 | 常州大学 | Design method of tower plate structure for eliminating gas phase bias flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |