CN221500974U - Device for improving crude benzene yield - Google Patents
Device for improving crude benzene yield Download PDFInfo
- Publication number
- CN221500974U CN221500974U CN202322872691.1U CN202322872691U CN221500974U CN 221500974 U CN221500974 U CN 221500974U CN 202322872691 U CN202322872691 U CN 202322872691U CN 221500974 U CN221500974 U CN 221500974U
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- CN
- China
- Prior art keywords
- bubble cap
- tower
- cap body
- tray
- heat exchange
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The embodiment of the utility model provides a device for improving crude benzene yield, which relates to the technical field of benzene removal towers, and comprises a benzene removal tower body and further comprises; the tower plates are fixed in the benzene removal tower body, a plurality of vent holes are formed in the top of each tower plate, a plurality of heat exchange structures are arranged on each tower plate, and the heat exchange structures are matched with the vent holes one by one; the heat exchange structure comprises a bubble cap structure, an outer housing and a choke ring, wherein the bubble cap structure of the heat exchange structure is aligned with a vent hole matched with the bubble cap structure, the choke ring is welded on a tower plate, the choke ring surrounds the outer side of the bubble cap structure, the outer housing is arranged on the bubble cap structure, and the bubble cap structure and the choke ring are wrapped in the outer housing. The device for improving the crude benzene yield can increase the contact area with rich oil under the condition of ensuring high flow rate, so that the heat exchange efficiency is further improved, and the recovery efficiency of crude benzene is improved.
Description
Technical Field
The utility model relates to the technical field of benzene removal towers, in particular to a device for improving crude benzene yield.
Background
In the domestic coking industry, a positive pressure type benzene removal method is mostly adopted for extracting crude benzene in coke oven gas, wherein wash oil is used as circulating washing liquid for benzene removal and repeated use. In the actual production of companies, the problems of low benzene washing efficiency, high gas consumption, low crude benzene recovery rate, excessive washing oil consumption and the like exist, and how to effectively control technologies such as crude benzene recovery, washing oil consumption and the like through relevant technical researches is regulated, so that the coking byproduct benefit is improved to the greatest extent, and the method becomes one of important subjects in our companies and even in the coking industry.
The apparatus for recovering crude benzene generally refers to a benzene removal column, and a tray in the benzene removal column is one of factors affecting the recovery efficiency of crude benzene, and the tray in the benzene removal column in the prior art is a general bubble cap tray, and since the bubble cap tray needs a large pressure drop, the flow rate of vapor (the faster the flow rate, the higher the heat exchange efficiency) is improved, but the flow range is reduced, that is, the contact area with rich oil is reduced, so that the recovery efficiency of crude benzene is difficult to improve.
Disclosure of utility model
The utility model aims to provide a device for improving crude benzene recovery, which aims to solve the problems that the tray in the benzene removal tower proposed in the background art is generally a bubble cap tray, and the bubble cap tray needs to have large pressure drop, and the flow range is reduced, namely the contact area with rich oil is reduced, so that the crude benzene recovery efficiency is difficult to improve.
In a first aspect, the utility model provides a device for increasing crude benzene yield, comprising a benzene removal tower body and further comprising;
The tower plates are fixed in the benzene removal tower body, a plurality of vent holes are formed in the top of each tower plate, a plurality of heat exchange structures are arranged on each tower plate, and the heat exchange structures are matched with the vent holes one by one;
The heat exchange structure comprises a bubble cap structure, an outer cover shell and a flow blocking ring, wherein the bubble cap structure of the heat exchange structure is aligned with vent holes matched with the bubble cap structure, the flow blocking ring is welded on a tray, the flow blocking ring surrounds the outer side of the bubble cap structure, the outer cover shell is arranged on the bubble cap structure, the outer cover shell wraps the bubble cap structure and the flow blocking ring in the bubble cap structure, a plurality of groups of sheet-shaped openings which are distributed annularly around the central axis of the outer cover shell and are equidistantly are formed in the top of the outer side of the outer cover shell, and each group of sheet-shaped openings comprises a plurality of sheet-shaped openings and a plurality of sheet-shaped openings which are distributed along the vertical direction and are equidistantly.
In a specific embodiment, the bubble cap structure includes intake pipe and bubble cap body, the intake pipe welded fastening is on the column plate, the intake pipe of bubble cap structure is rather than the coaxial setting of air vent of looks adaptation, bubble cap body welded fastening is on the column plate, bubble cap body and the coaxial setting of intake pipe, just the intake pipe is located bubble cap body inside and not contacted with bubble cap body, a plurality of shunt openings that are equidistant annular distribution around its center line bottom offered to bubble cap body, the dustcoat shell welded on the bubble cap body with the coaxial setting of bubble cap body.
In a specific embodiment, the top of the choke ring is higher than the shunt opening and lower than the sheet-shaped opening, the choke ring is coaxially arranged with the blister body, and the choke ring is not in contact with the blister body and the outer shell.
In a specific embodiment, one side of the column plate is provided with a liquid receiving plate which is integrated with the column plate, the cross section of the liquid receiving plate is of an L-shaped structure, the liquid receiving plate is fixed with the benzene removal tower, and the liquid receiving plate and the benzene removal tower form a liquid receiving groove.
In a specific embodiment, a downcomer is secured to the other side of the tray.
In a specific embodiment, the top of the tray is provided with a weir integrally formed therewith on the side of the tray adjacent to the downcomer, the top of the weir being lower than the top of the inlet pipe.
In a specific embodiment, the sheet-like mouth at the lowermost portion is above the weir.
In a specific embodiment, the tray, downcomer, weir, liquid receiving plate, bubble cap body and air inlet pipe are all stainless steel.
In a specific embodiment, a plurality of said trays are vertically and equidistantly spaced within the stripper column.
In a particular embodiment, the downcomer on each of said trays is in positive alignment with the liquid receiving plate on the tray adjacent thereto.
The device for improving the crude benzene yield provided by the utility model can increase the contact area with rich oil under the condition of ensuring high flow rate, so that the heat exchange efficiency is further improved, and the recovery efficiency of crude benzene is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a first perspective view of the tray according to an embodiment of the present utility model.
FIG. 2 is a schematic view of the overall first view structure of the tray according to the embodiment of the present utility model.
Fig. 3 is a schematic perspective view of a heat exchange structure according to an embodiment of the present utility model.
Fig. 4 is an internal construction view of a heat exchange structure according to an embodiment of the present utility model.
FIG. 5 is a schematic view showing the installation of a tray in the body of a benzene removal column according to an embodiment of the present utility model.
Fig. 6 is a schematic diagram illustrating the operation of a heat exchange structure according to an embodiment of the present utility model.
Icon: 1-column plate; 2-down-comer; 3-overflow weir; 4-a heat exchange structure; 5-an outer housing; 6-a blister body; 7-a choke ring; 8-shunt opening; 9, an air inlet pipe; 10-a sheet port; 11-a debenzolization tower body; 12-liquid receiving plate.
A-a liquid level line; b-steam flow trace.
Detailed Description
Because the tray in the debenzolization tower in the prior art is generally a bubble cap tray, the bubble tray needs to have large pressure drop, and the flow range of the bubble tray is reduced, namely the contact area with rich oil is reduced, so that the problem of difficult improvement of the recovery efficiency of crude benzene is solved. Therefore, the inventor provides a device for improving the crude benzene yield through research, which can increase the contact area with rich oil under the condition of ensuring high flow rate, further improve the heat exchange efficiency and improve the recovery efficiency of crude benzene.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1 to 6, an embodiment of the present utility model provides a device for increasing crude benzene yield, which includes a debenzolization tower 11, and further includes;
The novel benzene removal tower comprises a plurality of tower plates 1, wherein the plurality of tower plates 1 are fixed in a benzene removal tower body 11, a plurality of vent holes are formed in the top of each tower plate 1, a plurality of heat exchange structures 4 are arranged on each tower plate 1, the plurality of heat exchange structures 4 are matched with the plurality of vent holes one by one, each heat exchange structure 4 comprises a bubble cap structure, an outer cover shell 5 and a choke ring 7, the bubble cap structures of the heat exchange structures 4 are aligned with the vent holes matched with the bubble cap structures, the choke ring 7 is welded on each tower plate 1, the choke ring 7 surrounds the outer side of the bubble cap structure, the outer cover shell 5 is arranged on the bubble cap structure, the outer cover shell 5 wraps the bubble cap structures and the choke ring 7, a plurality of groups of sheet-shaped openings 10 which are distributed in an equidistant annular mode around the central axis of the outer cover shell 5 are formed in the top of the outer cover shell 5, each group of sheet-shaped openings 10 comprise a plurality of sheet-shaped openings 10 which are distributed in the vertical direction and are equidistant;
As can be seen from the drawing and the connection relation, the steam flows out from the bubble cap structure, the flow speed of the steam is accelerated due to the large pressure drop of the steam in the bubble cap structure, the steam flows out from the bubble cap structure and is blocked by the choke ring 7, and flows to each sheet-shaped opening 10 of the outer housing 5, the rich oil is pressed into the outer housing 5 according to the bernoulli principle, namely, the pressure intensity of the place with large flow speed is small, and is ejected from the sheet-shaped opening 10 to form a sheet-shaped film, and the steam is ejected from the sheet-shaped opening 10 to flow upwards, so that the steam is contacted with the rich oil forming the sheet-shaped film, the contact area is enlarged, and the heat exchange efficiency is improved, and the contact area with the rich oil is increased under the condition of ensuring high flow speed, so that the heat exchange efficiency is further improved, and the recovery efficiency of crude benzene is improved.
Specifically, the bubble cap structure includes intake pipe 9 and bubble cap body 6, intake pipe 9 welded fastening is on column plate 1, bubble cap structure's intake pipe 9 and the coaxial setting of air vent of its looks adaptation, bubble cap body 6 welded fastening is on column plate 1, bubble cap body 6 and intake pipe 9 coaxial setting, and intake pipe 9 is located bubble cap body 6 inside and do not contact with bubble cap body 6, a plurality of shunt ports 8 that are equidistant annular distribution around its central axis are seted up to bubble cap body 6's outside bottom, shell 5 welded on bubble cap body 6 and bubble cap body 6 coaxial setting, combine drawing and above-mentioned relation of connection can know, bubble cap structure choked flow effect is big, consequently, need send into the steam of high-speed flow, make the steam flow rate that send into in the bubble cap structure fast like this, the steam is fast at the oil-rich flow rate, the faster heat exchange efficiency is higher.
Specifically, the top of the choke ring 7 is higher than the shunt opening 8 and lower than the sheet-shaped opening 10, the choke ring 7 is coaxially arranged with the bubble cap body 6, the choke ring 7 is not contacted with the bubble cap body 6 and the outer shell 5, and the choke ring 7 is used for changing the flow direction of steam.
Specifically, a liquid receiving plate 12 with an integrated structure is arranged on one side of the tower plate 1, the cross section of the liquid receiving plate 12 is in an L-shaped structure, the liquid receiving plate 12 is fixed with the benzene removal tower, the liquid receiving plate 12 and the benzene removal tower form a liquid receiving groove, and rich oil is accumulated in the liquid receiving groove and overflows, and then is paved on the tower plate 1.
Specifically, the other side of the tray 1 is fixed with a downcomer 2.
Specifically, an overflow weir 3 which is integrally formed with the top of the tray 1 is arranged on one side of the top of the tray 1, which is close to the downcomer 2, and the top of the overflow weir 3 is lower than the top of the air inlet pipe 9, so that the rich oil level fully paved on the tray 1 is lower than the top of the air inlet pipe 9.
Specifically, the sheet-like port 10 located at the lowest portion is higher than the overflow weir 3, so that the rich liquid level is lower than the sheet-like port 10 located at the lowest portion.
Specifically, the tray 1, the downcomer 2, the overflow weir 3, the liquid receiving plate 12, the bubble cap body 6 and the air inlet pipe 9 are all made of stainless steel.
Specifically, the trays 1 are distributed in the vertical direction and equidistantly in the debenzolization tower 11, and the downcomers 2 on each tray 1 are aligned with the liquid receiving plates 12 on the adjacent tray 1, so that the rich oil flows in the debenzolization tower 11 in an S shape, and the residence time of the rich oil in the debenzolization tower is prolonged.
To sum up, the installation position of the tower plate 1 in the benzene removal tower body is consistent with the prior art.
In summary, in the device for improving crude benzene yield according to the embodiment of the utility model, steam flows out from the bubble cap structure, the flow speed of the steam is accelerated due to the large pressure drop of the steam in the bubble cap structure, the steam flows out from the bubble cap structure and is blocked by the choke ring 7, and flows to each sheet-shaped opening 10 of the outer housing 5, the pressure intensity of the outer side of the outer housing 5 is high according to the Bernoulli principle, namely, the pressure intensity of the place with large flow speed is low, so that the rich oil is pressed into the outer housing 5 and is sprayed out from the sheet-shaped opening 10 to form a sheet film shape, and the steam is still upwards sprayed out from the sheet-shaped opening 10 to contact the rich oil formed into the sheet film shape, so that the contact area is enlarged, the heat exchange efficiency is improved, the contact area with the rich oil is increased under the condition of ensuring high flow speed, the heat exchange efficiency is further improved, and the recovery efficiency of crude benzene is improved.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The device for improving the crude benzene yield comprises a benzene removal tower body and is characterized by further comprising;
The tower plates are fixed in the benzene removal tower body, a plurality of vent holes are formed in the top of each tower plate, a plurality of heat exchange structures are arranged on each tower plate, and the heat exchange structures are matched with the vent holes one by one;
The heat exchange structure comprises a bubble cap structure, an outer cover shell and a flow blocking ring, wherein the bubble cap structure of the heat exchange structure is aligned with vent holes matched with the bubble cap structure, the flow blocking ring is welded on a tray, the flow blocking ring surrounds the outer side of the bubble cap structure, the outer cover shell is arranged on the bubble cap structure, the outer cover shell wraps the bubble cap structure and the flow blocking ring in the bubble cap structure, a plurality of groups of sheet-shaped openings which are distributed annularly around the central axis of the outer cover shell and are equidistantly are formed in the top of the outer side of the outer cover shell, and each group of sheet-shaped openings comprises a plurality of sheet-shaped openings and a plurality of sheet-shaped openings which are distributed along the vertical direction and are equidistantly.
2. The device for improving crude benzene yield according to claim 1, wherein the bubble cap structure comprises an air inlet pipe and a bubble cap body, the air inlet pipe is welded and fixed on the tray, the air inlet pipe of the bubble cap structure is coaxially arranged with an air vent matched with the air inlet pipe, the bubble cap body is welded and fixed on the tray, the bubble cap body is coaxially arranged with the air inlet pipe, the air inlet pipe is positioned inside the bubble cap body and is not contacted with the bubble cap body, a plurality of split-flow ports which are distributed annularly around the central axis of the bubble cap body and are equidistantly arranged at the bottom of the outer side of the bubble cap body, and the outer shell is welded on the bubble cap body and is coaxially arranged with the bubble cap body.
3. The device for increasing crude benzene yield as claimed in claim 2, wherein the top of the choke ring is higher than the shunt opening and lower than the sheet-shaped opening, the choke ring is coaxially arranged with the bubble cap body, and the choke ring is not contacted with the bubble cap body and the outer shell.
4. The device for improving crude benzene yield according to claim 3, wherein a liquid receiving plate with an integrated structure is arranged on one side of the tower plate, the cross section of the liquid receiving plate is in an L-shaped structure, the liquid receiving plate is fixed with the benzene removal tower, and the liquid receiving plate and the benzene removal tower form a liquid receiving groove.
5. The apparatus for increasing crude benzene yield as claimed in claim 4, wherein a downcomer is fixed on the other side of said tray.
6. The device for improving crude benzene yield according to claim 5, wherein the top of the tower plate is provided with an overflow weir which is integrated with the top of the tower plate and is lower than the top of the air inlet pipe.
7. The apparatus for increasing crude benzene yield as claimed in claim 6, wherein said sheet-like port located at the lowest part is higher than the overflow weir.
8. The apparatus for increasing crude benzene yield as claimed in claim 6, wherein said tray, downcomer, overflow weir, liquid receiving plate, bubble cap body and air inlet pipe are all made of stainless steel.
9. The apparatus for increasing crude benzene yield as claimed in claim 5, wherein a plurality of said trays are vertically and equidistantly disposed within the de-benzene column.
10. An enhanced crude benzene recovery unit as claimed in claim 1, wherein the downcomer of each tray is in register with the liquid receiving plate of the tray adjacent thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322872691.1U CN221500974U (en) | 2023-10-25 | 2023-10-25 | Device for improving crude benzene yield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322872691.1U CN221500974U (en) | 2023-10-25 | 2023-10-25 | Device for improving crude benzene yield |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221500974U true CN221500974U (en) | 2024-08-09 |
Family
ID=92142975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322872691.1U Active CN221500974U (en) | 2023-10-25 | 2023-10-25 | Device for improving crude benzene yield |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221500974U (en) |
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2023
- 2023-10-25 CN CN202322872691.1U patent/CN221500974U/en active Active
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