CN113262516B - Side-draw structure of baffle tower for separating C16-C19 normal paraffins - Google Patents
Side-draw structure of baffle tower for separating C16-C19 normal paraffins Download PDFInfo
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- CN113262516B CN113262516B CN202110537655.2A CN202110537655A CN113262516B CN 113262516 B CN113262516 B CN 113262516B CN 202110537655 A CN202110537655 A CN 202110537655A CN 113262516 B CN113262516 B CN 113262516B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
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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
- C10G7/00—Distillation of hydrocarbon oils
Abstract
A side-draw structure of a clapboard tower for separating C16-C19 n-alkane relates to a side-draw structure of the clapboard tower, wherein the middle part of a cavity is provided with an inner cylinder (10) internally tangent with the inner wall of a tower body (31), the inner cylinder (10) divides the cavity into four parts, the middle part of an inner cylinder side-draw section (11) is provided with a side-draw frame, a cross-shaped flow passage B (16) is arranged above an annular groove (19) and positioned at the axis of the annular groove (19), and cross-shaped flow passages A (15) are arranged above the cross-shaped flow passage B (16) in a staggered manner; according to the invention, the baffle of the baffle rectifying tower is replaced by a cylindrical structure with one side tangent to the tower body, the cylindrical packing layer and the side-draw frame are arranged in the inner cylinder arranged as the side-draw section, and the plurality of crescent packing layers are arranged in the area between the inner cylinder and the tower body, so that the purpose of accurate separation and rapid drawing of the side-draw section is realized.
Description
Technical Field
The invention relates to a side-draw structure of a clapboard tower, in particular to a side-draw structure of a clapboard tower for separating C16-C19 normal paraffin.
Background
The mixed fraction contained in the Fischer-Tropsch synthetic oil mostly comprises normal paraffins of C8-C20. In industrial production, distillation cut fraction or multiple times of vacuum distillation are mainly adopted to extract normal alkane in Fischer-Tropsch synthetic oil, when the separation fraction is a mixture of C16-C19 normal alkane, a plurality of conventional rectifying towers are required to be connected in series to prepare high-purity normal alkane products, high equipment investment cost is required, occupied area is large, energy consumption is high due to low thermal efficiency, and a clapboard rectifying tower is commonly used for separation at present. The design of a divided rectifying column is an important thermal coupling for rectification, which has been proposed as early as the sixties of the last century. Although the concept of a baffled rectifier has been proposed for over half a century to date, there are still few baffled rectifiers that are currently in a true maturity to be used in industrial practice. Research shows that when the partition plate rectifying tower is used for separating a three-component mixture, the separation efficiency is improved and the thermodynamic efficiency is greatly improved because no back mixing phenomenon occurs in the separation process of each component. Therefore, compared with the conventional rectification process, the energy can be saved by more than 30%. In addition, the divided plate rectifying column is lower than the conventional rectifying column in manufacturing cost. When the separation section is a mixture of C16-C19 normal paraffins, the side extraction section of the traditional baffle distillation tower is generally in a semicircular structure when side extraction is carried out, and liquid phase falling from the upper part of the side extraction section cannot be uniformly collected when side extraction liquid is collected, so that the side extraction effect is reduced, and the separation effect of the baffle distillation tower is reduced.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a lateral extraction structure of a baffle tower for separating C16-C19 normal paraffin, wherein a baffle of a baffle rectification tower is replaced by a cylindrical structure with one side tangent to a tower body, a cylindrical packing layer and a lateral extraction frame are arranged in an inner cylinder arranged as a lateral extraction section, and a plurality of crescent packing layers are arranged in a region between the inner cylinder and the tower body, so that the aim of accurately separating and quickly extracting the lateral extraction section is fulfilled.
In order to realize the purpose, the invention adopts the following technical scheme:
a side draw structure of a clapboard tower for separating C16-C19 normal paraffin comprises a tower body, a cavity is arranged in the tower body, an inner cylinder internally tangent to the inner wall of the tower body is arranged in the middle of the cavity, the cavity is divided into four parts by the inner cylinder, the cavity above the inner cylinder forms a common rectification section, a packing layer A is arranged in the common rectification section, the cavity below the inner cylinder forms a common stripping section, a packing layer B is arranged in the common stripping section, a crescent cavity between the inner cylinder and the tower body forms an outer cylinder rectification feeding section, a crescent packing layer A is arranged at the upper end of the outer cylinder rectification feeding section, a crescent packing layer B is arranged at the lower end of the outer cylinder rectification feeding section, an inner cylinder side draw section with an opening at the upper end and the lower end is arranged in the inner cylinder, a cylindrical packing layer A is arranged at the upper end of the inner cylinder side draw section, a cylindrical packing layer B is arranged at the lower end of the inner cylinder side draw section, a lateral extraction frame is arranged in the middle of the lateral extraction section of the inner cylinder and comprises a ring groove, the ring groove is obliquely arranged according to the condition that one side of the inner cylinder, which is tangent to the tower body, is lower than the other side of the inner cylinder, which is opposite to the side of the inner cylinder, the outer edge surface of the ring groove is fixedly connected with the inner wall of the inner cylinder, a cross-shaped flow passage B is arranged above the ring groove and at the axis of the ring groove, the cross-shaped flow passage B comprises a square top plate, four edges of the square top plate are respectively provided with inclined plates which extend obliquely downwards, the lower ends of the four inclined plates are respectively positioned above the notches of the ring grooves, the cross-shaped flow passage A is arranged above the cross-shaped flow passage B in a staggered way, the lower ends of other four sloping plates arranged on the cross-shaped flow passage A are also respectively positioned above the notches of the ring grooves, a feed pipe which runs through the rectifying feed section of the outer cylinder is arranged in the middle of one side of the tower body, a preheater is arranged on the feed pipe, an inner cylinder extraction pipe penetrating through the inner cylinder and penetrating through the groove bottom at the lowest part of the annular groove is arranged in the middle of the other side of the tower body.
The device is characterized in that a side-drawing structure of a clapboard tower for separating C16-C19 normal paraffins is adopted, the upper end of a tower body is connected with one end of a tower top air outlet pipe, the other end of the tower top air outlet pipe is respectively connected with one end of a tower top return pipe and one end of a tower top discharge pipe, a condenser is arranged on the tower top air outlet pipe, the other end of the tower top return pipe is connected to the tower body above a packing layer A, and a disc distributor A is arranged on a public rectification section between the tower top return pipe and the packing layer A.
The side-draw structure of the clapboard tower for separating the C16-C19 normal paraffin is characterized in that the lower end of the tower body is connected with one end of a tower bottom liquid outlet pipe, the other end of the tower bottom liquid outlet pipe is respectively connected with one end of a tower bottom production pipe and one end of a tower bottom return pipe, a reboiler is arranged on the tower bottom return pipe, and the other end of the tower bottom return pipe is connected on the tower body below a packing layer B.
The side line collecting structure of the clapboard tower for separating the C16-C19 normal paraffin is provided with upward extending flanges at two sides of each inclined plate.
The side-draw structure of the clapboard tower for separating the C16-C19 normal paraffin is characterized in that a disc distributor B is arranged in a common rectifying section between the packing layer A and the inner cylinder.
The lateral line of separation C16-C19 normal structure baffle tower for alkane draw the structure, be equipped with four ends respectively with the cross bracing piece of inner tube inner wall rigid coupling in the below of annular, be equipped with the stand that upwards extends at the central part of cross bracing piece, the upper end of stand passes behind the square top piece that cross runner B was equipped with and the bottom rigid coupling of the square top piece that cross runner A was equipped with, be equipped with disc distributor C in the inner tube lateral line section of drawing between cross bracing piece and cylindrical packing layer B.
The side line extraction structure of the clapboard tower for separating the C16-C19 normal paraffin is characterized in that a crescent distributor is arranged in an outer cylinder rectification feeding section between a feeding pipe and a crescent packing layer B.
The side line extraction structure of the clapboard tower for separating the C16-C19 normal paraffin is characterized in that a disc distributor C is arranged in a common stripping section between the inner cylinder and the packing layer B.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the side-draw structure of the partition plate tower for separating the C16-C19 normal paraffin, the partition plate of the partition plate rectifying tower is replaced by a cylindrical structure with one side tangent to the tower body, a cylindrical packing layer and a side-draw frame are arranged in an inner cylinder arranged as a side-draw section, a plurality of crescent packing layers are arranged in the area between the inner cylinder and the tower body, gaseous C16 and C17 ascend after being heated by a preheater for flash separation and are redistributed in a common rectifying section, liquid C18 and C19 descend and are redistributed in the common stripping section, C16 is collected at the top of the tower body, C19 is collected at the bottom of the draw, C17 and C18 are collected through an inner cylinder draw pipe after the inner cylinder side-draw section, and the side-draw frame is arranged, so that the purpose of accurate separation and quick drawing of the side-draw section is realized; the method has the characteristics of accurate extraction, high yield, short separation time and the like, and has good popularization value and wide market prospect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a side draw frame according to the present invention;
FIG. 3 is a schematic view of the sidedraw frame of the present invention from another perspective;
fig. 4 is a schematic view of the structure of the cross-shaped support rod and the upright post.
In the figure: 1. a gas outlet pipe at the top of the tower; 2. a condenser; 3. a top reflux pipe; 4. a discharge pipe at the top of the tower; 5. a common rectification section; 6. a disc distributor A; 7. a packing layer A; 8. a disc distributor B; 9. a cylindrical filler layer A; 10. an inner barrel; 11. an inner cylinder lateral line extraction section; 12. a square top sheet; 13. flanging; 14. a sloping plate; 15. a cross-shaped flow passage A; 16. a cross-shaped flow passage B; 17. a column; 18. an inner cylinder extraction pipe; 19. a ring groove; 20. a cross-shaped support rod; 21. a disc distributor C; 22. a cylindrical filler layer B; 23. a tower bottom return pipe; 24. a reboiler; 25. a liquid outlet pipe at the bottom of the tower; 26. a tower bottom production pipe; 27. a crescent packing layer A; 28. an outer barrel rectification feed section; 29. a preheater; 30. a feeding pipe; 31. a tower body; 32. a crescent distributor; 33. a crescent packing layer B; 34. a disc distributor C; 35. a packing layer B; 36. a common stripping section.
Detailed Description
The present invention will be explained in more detail by the following examples, which are not intended to limit the present invention, and all changes and modifications within the scope of the present invention are intended to be protected by the disclosure of the present invention;
the side line extracting structure of the clapboard tower for separating C16-C19 normal paraffin, which is combined with the attached drawings 1-4, comprises a tower body 31, a cavity is arranged in the tower body 31, an inner cylinder 10 internally tangent with the inner wall of the tower body 31 is arranged in the middle of the cavity, the inner cylinder 10 divides the cavity into four parts, the cavity above the inner cylinder 10 forms a common rectifying section 5, a packing layer A7 is arranged in the common rectifying section 5, the cavity below the inner cylinder 10 forms a common stripping section 36, a packing layer B35 is arranged in the common stripping section 36, a disc distributor C34 is arranged in the common stripping section 36 between the inner cylinder 10 and the packing layer B35, a crescent cavity between the inner cylinder 10 and the tower body 31 forms an outer cylinder rectifying feeding section 28, a crescent packing layer A27 is arranged at the upper end of the outer cylinder rectifying feeding section 28, a crescent packing layer B33 is arranged at the lower end of the outer cylinder rectifying feeding section 28, an inner cylinder side line extracting section 11 with an upper end and a lower end opening is arranged in the inner cylinder 10, the upper end of the inner cylinder lateral line extraction section 11 is provided with a cylindrical packing layer A9, the lower end of the inner cylinder lateral line extraction section 11 is provided with a cylindrical packing layer B22, the middle part of the inner cylinder lateral line extraction section 11 is provided with a lateral line extraction frame, the lateral line extraction frame comprises an annular groove 19, one side of the annular groove 19 tangent to the inner cylinder 10 and the tower body 31 is lower than the other side opposite to the side, the outer edge surface of the annular groove 19 is fixedly connected with the inner wall of the inner cylinder 10, a cross-shaped flow passage B16 is arranged above the annular groove 19 and positioned at the axis of the annular groove 19, the cross-shaped flow passage B16 comprises a square top plate 12, four edges of the square top plate 12 are respectively provided with inclined plates 14 extending obliquely downwards, the lower ends of the four inclined plates 14 are respectively positioned above the notches of the annular groove 19, cross-shaped flow passages A15 are arranged above the cross-shaped flow passage B16 in a staggered manner, the other four inclined plates 14 arranged on the cross-shaped flow passage A15 are also respectively positioned above the notches of the annular groove 19, two sides of each inclined plate 14 are provided with flanges 13 extending upwards, the middle part of one side of the tower body 31 is provided with a feed pipe 30 penetrating through the outer cylinder rectification feed section 28, the feed pipe 30 is provided with a preheater 29, a crescent distributor 32 is arranged in the outer cylinder rectification feed section 28 between the feed pipe 30 and a crescent packing layer B33, the middle part of the other side of the tower body 31 is provided with an inner cylinder extraction pipe 18 penetrating through the inner cylinder 10 and penetrating through the lowest tank bottom of the ring groove 19, the upper end of the tower body 31 is connected with one end of the tower top outlet pipe 1, the other end of the tower top outlet pipe 1 is respectively connected with one end of the tower top return pipe 3 and one end of the tower top discharge pipe 4, the tower top outlet pipe 1 is provided with a condenser 2, the other end of the tower top return pipe 3 is connected with the tower bottom 31 positioned above the packing layer A7, the common rectification section 5 between the tower top return pipe 3 and the packing layer A7 is provided with a disc distributor A6, the lower end of the tower bottom outlet pipe 25 is connected with one end of the tower bottom outlet pipe 25, the other end of the tower bottom liquid outlet pipe 25 is respectively connected with one end of a tower bottom extraction pipe 26 and one end of a tower bottom return pipe 23, a reboiler 24 is arranged on the tower bottom return pipe 23, the other end of the tower bottom return pipe 23 is connected on a tower body 31 positioned below a packing layer B35, a disc distributor B8 is arranged in a public rectification section 5 between the packing layer A7 and an inner cylinder 10, a cross-shaped support rod 20 with four ends fixedly connected with the inner wall of the inner cylinder 10 is arranged below a ring groove 19, an upward extending upright post 17 is arranged at the central part of the cross-shaped support rod 20, the upper end of the upright post 17 penetrates through a square top plate 12 arranged on the cross-shaped flow channel B16 and then is fixedly connected with the bottom of the square top plate 12 arranged on the cross-shaped flow channel A15, and a disc distributor C21 is arranged in an inner cylinder side line extraction section 11 between the cross-shaped support rod 20 and the cylindrical packing layer B22.
When the lateral line extraction structure of the partition tower for separating the C16-C19 normal paraffins is implemented, a condenser 2, a reboiler 24 and a preheater 29 are connected with a switch and a power supply, the condenser 2, the reboiler 24 and the preheater 29 are started, a mixed raw material of the C16-C19 normal paraffins is heated from a feeding pipe 30 through the preheater 29 for flash separation and then is fed into an outer barrel rectification feeding section 28, the separated gaseous C16 and C17 rise along the outer barrel rectification feeding section 28, and the separated liquid C18 and C19 fall along the outer barrel rectification feeding section 28;
ascending gaseous C16 and C17 contact and separate in a crescent packing layer A27 and a liquid phase which is uniformly distributed and descends through a disc distributor B8, reach a common rectification section 5, join with a gas phase which ascends in an inner cylinder lateral line extraction section 11, reflux and contact and separate in a packing layer A7 with a descending liquid phase which is uniformly distributed through a disc distributor A6 in a countercurrent manner, the gas phase is led out from a tower top gas outlet pipe 1, is condensed through a tower top condenser 2, a part of C16 is taken out as a tower top product through a tower top discharge pipe 4, a part of C16 is taken as a tower top reflux and returned into the tower through a tower top reflux pipe 3, the liquid phase contacts and separates with the ascending gas phase in the packing layer A7, then respectively flows into the inner cylinder lateral line extraction section 11 and an outer cylinder rectification feed section 28, the liquid phase flowing into the inner cylinder lateral line extraction section 11 is separated with the ascending gas phase in a cylinder packing layer A9, and the part of the inner cylinder packing layer 18 arranged at the lower part of the inner cylinder lateral line extraction section 11, the produced material is mainly C17, and the arrangement of the side-draw frame ensures that the C17 is more accurately produced;
descending liquid C18 and C19 are uniformly distributed by a crescent distributor 32, then contact and separate with ascending gas phase in a crescent packing layer B33, then reach a common stripping section 36, join with the descending liquid phase in an inner cylinder side line extraction section 11, are uniformly distributed in a packing layer B35 by a disc distributor C34, contact and separate with ascending gas phase at the tower bottom in a countercurrent manner, the liquid phase is led out by a tower bottom liquid outlet pipe 25, a part of C19 is taken out as a tower bottom product by a tower bottom extraction pipe 26, a part of C19 is heated by a tower bottom reboiler 24 to become gas phase, returns into the tower by a tower bottom return pipe 23, is respectively lifted into the inner cylinder side line extraction section 11 and an outer cylinder rectification feeding section 28 after contact and separation with the descending liquid phase in a packing layer B35, the gas phase lifted into the inner cylinder side line extraction section 11 is uniformly distributed in a cylinder packing layer B22 and is contacted and separated with the descending liquid phase by the disc distributor C21, and then part of the inner cylinder extraction pipe 18 arranged at the lower part of the inner cylinder side line extraction section 11, the extracted material is mainly C18, and the side-line extracting frame is arranged, so that C18 is extracted more accurately;
the process employs a dividing wall rectifying column designed as described in the above invention. According to theoretical calculation, under the feeding amount of 2500kg/h, the invention only needs 64 layers of theoretical plates, under the conditions that the overhead pressure is 0.05 KPa/the bottom pressure is 0.55KPa, the reflux amount is 750kg/h, the separation effect on the ternary components (C16: C17/C18: C19= 16%: 47%: 37%) is good, and the product purity of C16 and C19 reaches more than 99.95%.
The present invention is not described in detail in the prior art.
Claims (8)
1. A side-draw structure of a baffle tower for separating C16-C19 normal paraffin is characterized in that: comprises a tower body (31), a cavity is arranged in the tower body (31), an inner barrel (10) internally tangent to the inner wall of the tower body (31) is arranged in the middle of the cavity, the cavity is divided into four parts by the inner barrel (10), the cavity above the inner barrel (10) forms a public rectification section (5), a packing layer A (7) is arranged in the public rectification section (5), the cavity below the inner barrel (10) forms a public stripping section (36), a packing layer B (35) is arranged in the public stripping section (36), a crescent cavity between the inner barrel (10) and the tower body (31) forms an outer barrel rectification feeding section (28), a crescent packing layer A (27) is arranged at the upper end of the outer barrel rectification feeding section (28), a crescent packing layer B (33) is arranged at the lower end of the outer barrel rectification feeding section (28), an inner barrel side line extracting section (11) with an upper end and a lower end open is arranged in the inner barrel (10), the upper end of the inner cylinder side line extraction section (11) is provided with a cylindrical packing layer A (9), the lower end of the inner cylinder side line extraction section (11) is provided with a cylindrical packing layer B (22), the middle part of the inner cylinder side line extraction section (11) is provided with a side line extraction frame, the side line extraction frame comprises an annular groove (19), the annular groove (19) is obliquely arranged below the other side opposite to the one side tangent to the inner cylinder (10) and the tower body (31) according to one side, the outer edge surface of the annular groove (19) is fixedly connected with the inner wall of the inner cylinder (10), a cross-shaped flow passage B (16) is arranged above the annular groove (19) and positioned at the axis of the annular groove (19), the cross-shaped flow passage B (16) comprises a square top plate (12), inclined plates (14) extending obliquely downwards are respectively arranged on four edges of the square top plate (12), the lower ends of the four inclined plates (14) are respectively positioned above the notch of the annular groove (19), and cross-shaped flow passages A (15) are alternately arranged above the cross-shaped flow passage B (16), the lower ends of other four inclined plates (14) arranged on the cross-shaped flow channel A (15) are also respectively positioned above the notches of the ring grooves (19), the middle part of one side of the tower body (31) is provided with a feed pipe (30) penetrating through the rectifying feed section (28) of the outer cylinder, the feed pipe (30) is provided with a preheater (29), and the middle part of the other side of the tower body (31) is provided with an inner cylinder extraction pipe (18) penetrating through the inner cylinder (10) and penetrating through the groove bottom at the lowest part of the ring grooves (19).
2. The side draw structure of the dividing plate tower for separating C16-C19 normal paraffins, which is characterized in that: the upper end of the tower body (31) is connected with one end of a tower top outlet pipe (1), the other end of the tower top outlet pipe (1) is respectively connected with one end of a tower top return pipe (3) and one end of a tower top discharge pipe (4), a condenser (2) is arranged on the tower top outlet pipe (1), the other end of the tower top return pipe (3) is connected on the tower body (31) above a packing layer A (7), and a disc distributor A (6) is arranged on a public rectification section (5) between the tower top return pipe (3) and the packing layer A (7).
3. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: the lower end of the tower body (31) is connected with one end of a tower bottom liquid outlet pipe (25), the other end of the tower bottom liquid outlet pipe (25) is respectively connected with one end of a tower bottom extraction pipe (26) and one end of a tower bottom return pipe (23), the tower bottom return pipe (23) is provided with a reboiler (24), and the other end of the tower bottom return pipe (23) is connected on the tower body (31) below a packing layer B (35).
4. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: two sides of each inclined plate (14) are provided with flanges (13) extending upwards.
5. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: a disc distributor B (8) is arranged in the common rectifying section (5) between the packing layer A (7) and the inner cylinder (10).
6. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: a cross-shaped supporting rod (20) with four ends fixedly connected with the inner wall of the inner cylinder (10) is arranged below the ring groove (19), an upright post (17) extending upwards is arranged at the center of the cross-shaped supporting rod (20), the upper end of the upright post (17) penetrates through a square top plate (12) arranged on a cross-shaped flow passage B (16) and then is fixedly connected with the bottom of the square top plate (12) arranged on a cross-shaped flow passage A (15), and a disc distributor C (21) is arranged in an inner cylinder side line extracting section (11) between the cross-shaped supporting rod (20) and a cylindrical packing layer B (22).
7. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: a crescent distributor (32) is arranged in the outer cylinder rectifying feed section (28) between the feed pipe (30) and the crescent packing layer B (33).
8. The sidedraw configuration of a splitter column for the separation of C16-C19 normal paraffins as set forth in claim 1 wherein: a disc distributor C (34) is arranged in a common stripping section (36) between the inner cylinder (10) and the packing layer B (35).
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| CN202110537655.2A CN113262516B (en) | 2021-05-18 | 2021-05-18 | Side-draw structure of baffle tower for separating C16-C19 normal paraffins |
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| CN202110537655.2A CN113262516B (en) | 2021-05-18 | 2021-05-18 | Side-draw structure of baffle tower for separating C16-C19 normal paraffins |
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| CN111073677A (en) * | 2019-12-26 | 2020-04-28 | 中国石油化工股份有限公司 | Separation and purification device and separation and purification process for C8-C20 normal paraffin mixed fraction |
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Denomination of invention: A sidewall extraction structure for separating C16-C19 normal alkanes using a separator tower Effective date of registration: 20230320 Granted publication date: 20220624 Pledgee: Agricultural Bank of China Limited Luoyang Mengjin Sub-branch Pledgor: HENAN ZT LEAGUE CHEMICAL Co.,Ltd. Registration number: Y2023980035461 |