CN113262515B - Partition rectifying tower for separating mixed fraction of C8-C11 normal paraffins - Google Patents
Partition rectifying tower for separating mixed fraction of C8-C11 normal paraffins Download PDFInfo
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- CN113262515B CN113262515B CN202110537608.8A CN202110537608A CN113262515B CN 113262515 B CN113262515 B CN 113262515B CN 202110537608 A CN202110537608 A CN 202110537608A CN 113262515 B CN113262515 B CN 113262515B
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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 baffle rectifying tower for separating a mixed fraction of C8-C11 n-alkanes relates to a baffle rectifying tower structure, wherein a vertical baffle is arranged in the middle of a cavity to divide the cavity into four parts, the baffle comprises a baffle A (11) and a baffle B (37), the lower part of one surface of the baffle A (11) is contacted with the upper part of one surface of the baffle B (37), a gear A (16) is meshed with a tooth A (15), and a gear B (34) is meshed with a tooth B (35); the partition plates are arranged into a telescopic structure, so that the size of the spaces of the four distillation sections can be adjusted according to different normal paraffin proportions in a C8-C11 normal paraffin mixture, the floating packing layer A and the floating packing layer B are positioned in different distillation sections according to requirements, and the aim of fine fractionation is fulfilled.
Description
Technical Field
The invention relates to a partition rectifying tower structure, in particular to a partition rectifying tower for separating mixed fractions of C8-C11 normal paraffins.
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 C8-C11 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 partition rectifying column is lower than the conventional rectifying column in terms of manufacturing cost. When a baffle distillation tower is used for separating a mixture of normal paraffins with the distillation section of C8-C11, the ratio of each normal paraffin in the mixture of the raw materials for separating C8-C11 normal paraffins is not kept unchanged every time, so that the cut of the distillate by using the same baffle distillation tower every time is easy to cause that the precision of cut products obtained from the top, the bottom and the side of the tower cannot be output according to a preset value.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a partition rectifying tower for separating mixed fractions of C8-C11 normal paraffins, which can adjust the space size of four fractions according to different normal paraffin ratios in a mixture of C8-C11 normal paraffins by arranging a partition in a telescopic structure, and enables a floating filler layer A and a floating filler layer B to be positioned in different fractions according to requirements, thereby achieving the purpose of fine fractionation.
In order to realize the purpose, the invention adopts the following technical scheme:
a baffle plate rectifying tower for separating C8-C11 normal paraffin mixed fraction comprises a tower body, wherein a cavity is arranged in the tower body, a vertical baffle plate is arranged in the middle of the cavity and divides the cavity into four parts, the cavity above the baffle plate forms a public rectifying section, the cavity below the baffle plate forms a public stripping section, the cavity on one side of the baffle plate forms a rectifying feeding section, the cavity on the other side of the baffle plate forms a middle side line extracting section, the baffle plate comprises a baffle plate A and a baffle plate B, the lower part of one surface of the baffle plate A is contacted with the upper part of one surface of the baffle plate B, a tooth A is arranged on the lower part of the other surface of the baffle plate A, a motor A is arranged on the outer wall of the tower body, a rotating shaft A arranged on the motor A extends into the middle side line extracting section along a through hole arranged on the side wall of the tower body, a gear A is sleeved on the rotating shaft A and meshed with the tooth A, a tooth B is arranged on the upper part of the other surface of the baffle plate B, a motor B is arranged on the outer wall of the tower body, a rotating shaft B arranged on the motor B extends into the rectifying and feeding section along another through hole arranged on the side wall of the tower body, a gear B is sleeved on the rotating shaft B and is meshed with the gear B, a packing layer A is arranged on the common rectifying section, a packing layer B is arranged on the common stripping section, a semicircular packing layer E partially positioned on the rectifying and feeding section is arranged at the top of the rectifying and feeding section, a semicircular packing layer F is arranged at the upper part of the rectifying and feeding section, a semicircular packing layer H partially positioned on the rectifying and feeding section is arranged at the bottom of the rectifying and feeding section, a semicircular packing layer G is arranged at the lower part of the rectifying and feeding section, a semicircular packing layer A partially positioned on the middle side line stripping section is arranged at the top of the middle side line stripping section, a semicircular packing layer B is arranged at the upper part of the middle side line stripping section, the bottom in middle side draw section is equipped with the semicircle packing layer D that partly lies in middle side draw section, and interval semicircle packing layer D in the lower part in middle side draw section is equipped with semicircle packing layer C, and semicircle packing layer E and semicircle packing layer A form unsteady packing layer A jointly, forms gap A between semicircle packing layer E and the semicircle packing layer A, and semicircle packing layer H and semicircle packing layer D form unsteady packing layer B jointly, form gap B between semicircle packing layer H and the semicircle packing layer D.
The baffle plate rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin is characterized in that the top of the 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 distributor A is arranged on a public rectifying section between the tower top return pipe and the packing layer A.
The baffle plate rectifying tower for separating the C8-C11 normal paraffin mixed fraction 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 to the tower body below the packing layer B.
The partition rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin has the semicircular packing layer E and the semicircular packing layer A which are equal in height, and the top of the gap A is provided with the sealing strip A.
The partition rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin has the semicircular packing layer H and the semicircular packing layer D which are equal in height, and the bottom of the gap B is provided with the sealing strip B.
The baffle plate rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin is characterized in that a feed pipe penetrating through a rectifying feed section is arranged on a tower body between a semicircular packing layer F and a semicircular packing layer G, and a preheater is arranged on the feed pipe.
The baffle plate rectifying tower for separating the C8-C11 normal paraffin mixed fraction is characterized in that an intermediate extraction pipe penetrating through an intermediate lateral extraction section is arranged on a tower body between the semicircular packing layer B and the semicircular packing layer C.
The clapboard rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin is characterized in that a distributor B is arranged in a common rectifying section between a packing layer A and a floating packing layer A, and a distributor C is arranged in a common stripping section between the floating packing layer B and the packing layer B.
The baffle rectifying tower for separating the C8-C11 normal paraffin mixed fraction is characterized in that a baffle A is arranged in the middle of the lower end of a baffle A, a baffle B is arranged in the middle of the upper end of the baffle B, and the two sides of the baffle A and the two sides of the baffle B are respectively limited in clamping grooves formed in the side wall of a cavity.
The partition plate rectifying tower for separating the mixed fraction of the C8-C11 normal paraffins is characterized in that the end part of the rotating shaft A is arranged in a blind hole formed in the side wall of the middle side line extraction section, and the end part of the rotating shaft B is arranged in another blind hole formed in the side wall of the rectifying feed section.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
the partition plate rectifying tower for separating the mixed fraction of the C8-C11 normal paraffins has the advantages that the partition plate is arranged to be of a telescopic structure, so that the size of the space of four distillation sections can be adjusted according to different normal paraffin ratios in the mixture of the C8-C11 normal paraffins, the floating packing layer A and the floating packing layer B are positioned in different distillation sections according to requirements, and the purpose of fine fractionation is achieved; the invention has the characteristics of unique originality, fine fractionation, high finished product yield, simple and convenient construction operation 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 view of the engagement of gear A and tooth A according to the present invention;
fig. 3 is a schematic structural view of an embodiment of the present invention in use.
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 distributor A; 7. a packing layer A; 8. a distributor B; 9. a gap A; 10. a semicircular block packing layer A; 11. a spacer A; 12. a semicircular block packing layer B; 13. a middle side draw section; 14. a middle production pipe; 15. a tooth A; 16. a gear A; 17. a rotating shaft A; 18. a baffle plate A; 19. a card slot; 20. a semicircular block packing layer C; 21. a semicircular block packing layer D; 22. a gap 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 semicircular block packing layer E; 28. a semicircular block packing layer F; 29. a rectifying feed section; 30. a baffle sheet B; 31. a preheater; 32. a feed pipe; 33. a rotating shaft B; 34. a gear B; 35. a tooth B; 36. a semicircular block packing layer G; 37. a spacer B; 38. a semicircular block packing layer H; 39. a distributor C; 40. a packing layer B; 41. a tower body; 42. a common stripping section; 43. blind holes; 44. perforating; 45. a motor A; 46. a motor B; 47. sealing strip A; 48. and a sealing strip B.
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 baffle plate rectifying tower for separating the mixed fraction of C8-C11 normal paraffin, which is combined with the attached drawing 1 or 2, comprises a tower body 41, wherein a cavity is arranged in the tower body 41, a vertical baffle plate is arranged in the middle of the cavity and divides the cavity into four parts, the cavity above the baffle plate forms a common rectifying section 5, the cavity below the baffle plate forms a common stripping section 42, the cavity at one side of the baffle plate forms a rectifying feeding section 29, the cavity at the other side of the baffle plate forms a middle side line extracting section 13, the baffle plate comprises a baffle plate A11 and a baffle plate B37, the lower part of one side of the baffle plate A11 is contacted with the upper part of one side of the baffle plate B37, the lower part of the other side of the baffle plate A11 is provided with a tooth A15, the outer wall of the tower body 41 is provided with a motor A45, a rotating shaft A17 arranged on the motor A45 extends into the middle side line extracting section 13 along a perforation 44 arranged on the side wall of the tower body 41, a gear A17 is sleeved with a gear A16, a gear A16 is meshed with a tooth A15, the upper part of the other side of a spacer B37 is provided with a tooth B35, the outer wall of a tower body 41 is provided with a motor B46, a rotating shaft B33 arranged on a motor B46 extends into a rectification feeding section 29 along another through hole 44 arranged on the side wall of the tower body 41, the rotating shaft B33 is sleeved with a gear B34, the gear B34 is meshed with the tooth B35, the middle part of the lower end of the spacer A11 is provided with a baffle A18, the middle part of the upper end of the spacer B37 is provided with a baffle B30, two sides of the spacer A11 and two sides of the spacer B37 are respectively limited in a clamping groove 19 arranged on the side wall of a cavity, the end part of the rotating shaft A17 is arranged in a blind hole 43 arranged on the side wall of a middle rectification drawing section 13, the end part of the rotating shaft B33 is arranged in another blind hole 43 arranged on the side wall of the rectification feeding section 29, a packing layer A7 is arranged on a common section 5, the top of the tower body 41 is connected with one end of a return pipe 1, the top of the tower, the other end part of the return pipe is respectively connected with a tower top of the discharge pipe 4, a condenser 2 is arranged on a gas outlet pipe 1 at the top of the tower, the other end of a tower top return pipe 3 is connected on a tower body 41 positioned above a packing layer A7, a distributor A6 is arranged on a common rectification section 5 between the tower top return pipe 3 and the packing layer A7, a packing layer B40 is arranged at a common stripping section 42, the lower end of the tower body 41 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, 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 the tower body 41 positioned below the packing layer B40, a semicircular packing layer E27 partially positioned at a rectification feed section 29 is arranged at the top of the rectification feed section 29, a semicircular packing layer F28 is arranged at the upper part of the semicircular packing layer E27 at the rectification feed section 29, a semicircular packing layer H38 partially positioned at the rectification feed section 29 is arranged at the bottom, a semicircular filler layer G36 is arranged at the lower interval semicircular filler layer H38 of the rectification feeding section 29, a semicircular filler layer A10 which is partially positioned at the middle lateral line extraction section 13 is arranged at the top of the middle lateral line extraction section 13, a semicircular filler layer B12 is arranged at the upper interval semicircular filler layer A10 of the middle lateral line extraction section 13, a semicircular filler layer D21 which is partially positioned at the middle lateral line extraction section 13 is arranged at the bottom of the middle lateral line extraction section 13, a semicircular filler layer C20 is arranged at the lower interval semicircular filler layer D21 of the middle lateral line extraction section 13, a semicircular filler layer E27 and the semicircular filler layer A10 jointly form a floating filler layer A, a gap A9 is formed between the semicircular filler layer E27 and the semicircular filler layer A10, the semicircular filler layers E27 and semicircular filler layer A10 have the same height, a sealing strip A47 is arranged at the top of the gap A9, and a semicircular filler layer H38 and a semicircular filler layer D21 jointly form a floating filler layer B, a gap B22 is formed between the semicircular packing layer H38 and the semicircular packing layer D21, the semicircular packing layer H38 and the semicircular packing layer D21 are equal in height, a sealing strip B48 is arranged at the bottom of the gap B22, a feeding pipe 32 penetrating through a rectification feeding section 29 is arranged on a tower body 41 between the semicircular packing layer F28 and the semicircular packing layer G36, a preheater 31 is arranged on the feeding pipe 32, a middle extraction pipe 14 penetrating through a middle side line extraction section 13 is arranged on the tower body 41 between the semicircular packing layer B12 and the semicircular packing layer C20, a distributor B8 is arranged in a public rectification section 5 between a packing layer A7 and a floating packing layer A, and a distributor C39 is arranged in a public stripping section 42 between the floating packing layer B and the packing layer B40.
In the implementation of the partition rectifying tower for separating the mixed fraction of the C8-C11 normal paraffin, the partition rectifying tower is combined with the attached drawing 3, when the partition rectifying tower is used, a condenser 2, a reboiler 24, a preheater 31, a motor A45 and a motor B46 are respectively connected with a switch and a power supply, the condenser 2, the reboiler 24 and the preheater 31 are started, the mixed raw material of the C8-C11 normal paraffin is heated from a feeding pipe 32 through the preheater 31 for flash separation and then is fed into a rectifying feeding section 29, the separated gaseous C8 and C9 ascend along the rectifying feeding section 29, and the separated liquid C10 and C11 descend along the rectifying feeding section 29; ascending gaseous C8 and C9 reach a common rectification section 5 after contacting and separating a semicircular packing layer F28 and a semicircular packing layer E27 with liquid phases which are uniformly distributed and descend through a distributor B8, join with a gas phase which ascends from a middle side line extraction section 13, reflux with a tower top in a packing layer A7 and countercurrent contact and separation of the descending liquid phases which are uniformly distributed through the distributor A6, the gas phase is led out from a tower top gas outlet pipe 1, after being condensed by a tower top condenser 2, a part of C8 is extracted as a tower top product through a tower top discharge pipe 4, a part of C8 is returned into the tower top reflux through a tower top reflux pipe 3, after contacting and separation of the packing layer A7 with the ascending gas phase, respectively flow into both sides of a partition plate through a distributor B8 according to a certain distribution example, the liquid phase which flows into the middle side line extraction section 13 flows out from a middle extraction pipe 14 after contacting and separation of the ascending gas phase in the semicircular packing layer A10 and the semicircular packing layer B12, the produced material is mainly C9; descending liquid C10 and C11 contact and separate with ascending gas phase in a semicircular packing layer G36 and a semicircular packing layer H38, then reach a common stripping section 42, join with the descending liquid phase in a middle side line extraction section 13, are uniformly distributed in a packing layer B40 through a distributor C39, and are in countercurrent contact and separation with ascending gas phase at the tower bottom, the liquid phase is led out from a tower bottom liquid outlet pipe 25, a part C11 is taken as a tower bottom product through a tower bottom extraction pipe 26, a part C11 is heated by a tower bottom reboiler 24 to become gas phase, and is returned to the tower through a tower bottom return pipe 23, after the packing layer B40 is in contact and separation with the descending liquid phase, the gas phase ascended into the middle side line extraction section 13 rises along two sides of a partition plate, is separated with the semicircular packing layer D21 and the semicircular packing layer C20, and is taken out from a middle extraction pipe 14 after the descending liquid phase is in contact and separation, and the extracted matter is mainly C10;
because the components of the mixed raw materials of the C8-C11 normal paraffins in different batches are slightly different, the defect of incomplete separation is easily caused by the separation of the same partition tower, and the partition tower body can realize four states of conventional rectification, expansion rectification of the tower top public rectification section 5, expansion rectification of the tower bottom public stripping section 42, and expansion rectification of the tower top public rectification section 5 and the tower bottom public stripping section 42 respectively:
when four components in the C8-C11 normal paraffin mixed raw material are normal values, the upper end of a spacer A11 extends into a gap A9, the lower end of a spacer B37 extends into a gap B22 to form a semicircular block packing layer E27 and a semicircular block packing layer H38 which are respectively positioned in a rectification feed section 29, the semicircular block packing layer A10 and the semicircular block packing layer D21 are respectively positioned in a middle side line extraction section 13, and rectification is carried out according to a normal flow;
when the proportion of C8 in the C8-C11 normal paraffin mixed raw material is larger than a normal value, starting a motor A45, starting a rotating shaft A17 to rotate to drive a gear A16 to rotate, starting tooth A15 meshed with the gear A16 to move until a spacer A11 moves downwards to be separated from a gap A9 and keep a proper distance, and at the moment, respectively positioning a semicircular filler layer E27 and a semicircular filler layer A10 in a common rectification section 5, so that the number of filler layers in the common rectification section 5 is increased, the purpose that the fine fractionation yield of C8 larger than the normal value is not reduced is realized, the baffle A18 is arranged to play a limiting role, and the sealing strip A47 is arranged to play a role that the gap A9 does not leak when the semicircular filler layer E27 and the semicircular filler layer A10 are respectively positioned in the common rectification section 5;
when the proportion of C11 in the C8-C11 normal paraffin mixed raw material is larger than a normal value, a motor B46 is started, a rotating shaft B33 starts to rotate to drive a gear B34 to rotate, a tooth B35 meshed with the gear B34 starts to move until a spacer B37 moves upwards to be separated from a gap B22 and keep a proper distance, and at the moment, a semicircular packing layer H38 and a semicircular packing layer D21 are respectively positioned in a common stripping section 42, so that the number of packing layers in the common stripping section 42 is increased, the purpose that the fine fractionation yield of C11 larger than the normal value is not reduced is achieved, the baffle B30 is arranged to play a limiting role, and the sealing strip B48 is arranged to play a role that the gap B22 does not leak when the semicircular packing layer H38 and the semicircular packing layer D21 are respectively positioned in the common stripping section 42;
when the proportion of C8 and C11 in the mixed raw material of the C8-C11 normal paraffin is larger than a normal value, respectively starting a motor A45 and a motor B46, starting the rotation of a rotating shaft A17 and a rotating shaft B33, respectively driving a spacer A11 to move downwards to be separated from a gap A9 and keep a proper distance, and driving a spacer B37 to move upwards to be separated from a gap B22 and keep a proper distance, at the moment, a semicircular filler layer E27 and a semicircular filler layer A10 are respectively positioned in a common rectification section 5, and a semicircular filler layer H38 and a semicircular filler layer D21 are respectively positioned in a common stripping section 42, so that the number of filler layers in the common rectification section 5 and the common stripping section 42 is respectively increased, and the purpose that the fine fractionation yield of C8 larger than the normal value and the fine fractionation yield of C11 larger than the normal value are respectively not reduced is realized;
the process adopts a partition plate rectifying tower designed according to the description of the invention, and the invention only needs 53 layers of theoretical plates by theoretical calculation under the condition of 4500kg/h feeding amount, has good separation effect on ternary components (C8: C9/C10: C11=15% -38%: 25% -64%: 18% -40%) under the conditions of 0.05KPa of tower top pressure/0.55 KPa of tower bottom pressure and 1500kg/h of reflux amount, and the purity of each product reaches more than 99.95%.
The invention is not described in detail in the prior art.
Claims (10)
1. A partition rectifying tower for separating mixed fractions of C8-C11 normal paraffins is characterized in that: comprises a tower body (41), a cavity is arranged in the tower body (41), a vertical clapboard is arranged in the middle of the cavity, the cavity is divided into four parts, the cavity above the clapboard forms a public rectification section (5), the cavity below the clapboard forms a public stripping section (42), the cavity on one side of the clapboard forms a rectification feeding section (29), the cavity on the other side of the clapboard forms a middle side line extraction section (13), the clapboard comprises a spacer A (11) and a spacer B (37), the lower part of one side of the spacer A (11) is contacted with the upper part of one side of the spacer B (37), the lower part of the other side of the spacer A (11) is provided with a tooth A (15), the outer wall of the tower body (41) is provided with a motor A (45), a rotating shaft A (17) arranged on the motor A (45) extends into the middle side line extraction section (13) along a perforation (44) arranged on the side wall of the tower body (41), a gear A (16) is sleeved on the rotating shaft A (17), the gear A (16) is meshed with the tooth A (15), a tooth B (35) is arranged on the upper part of the other side of the spacer B (37), a motor B (46) is arranged on the outer wall of the tower body (41), the rotating shaft B (33) arranged on the motor B (46) extends into the rectification feeding section (29) along another perforation (44) arranged on the side wall of the tower body (41), a gear B (34) is sleeved on the rotating shaft B (33), the gear B (34) is meshed with the tooth B (35), a packing layer A (7) is arranged on the common section (5), a packing layer B (40) is arranged on the common stripping section (42), a semi-circle block packing layer E (27) partially positioned on the rectification feeding section (29) is arranged on the top of the rectification feeding section (29), a semi-circle block packing layer F (28) is arranged on the upper part of the rectification feeding section (29) at intervals between the semi-circle block packing layer E (27), a semicircular packing layer H (38) with a part located in the rectification feeding section (29) is arranged at the bottom of the rectification feeding section (29), a semicircular packing layer G (36) is arranged at the lower part of the rectification feeding section (29) at intervals of the semicircular packing layer H (38), a semicircular packing layer A (10) with a part located in the middle lateral line extraction section (13) is arranged at the top of the middle lateral line extraction section (13), a semicircular packing layer B (12) is arranged at the upper part of the middle lateral line extraction section (13) at intervals of the semicircular packing layer A (10), a semicircular packing layer D (21) with a part located in the middle lateral line extraction section (13) is arranged at the bottom of the middle lateral line extraction section (13), a semicircular packing layer C (20) is arranged at the lower part of the middle extraction section (13) at intervals of the semicircular packing layer D (21), a semicircular packing layer E (27) and the semicircular packing layer A (10) jointly form a floating layer A, a gap A (9) is formed between the semicircular block packing layer E (27) and the semicircular block packing layer A (10), the semicircular block packing layer H (38) and the semicircular block packing layer D (21) jointly form a floating packing layer B, and a gap B (22) is formed between the semicircular block packing layer H (38) and the semicircular block packing layer D (21).
2. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: the top of tower body (41) is connected with one end of top of the tower outlet pipe (1), the other end of top of the tower outlet pipe (1) is connected with each end of top of the tower return pipe (3) and top of the tower discharging pipe (4) respectively, a condenser (2) is arranged on the top of the tower outlet pipe (1), the other end of the top of the tower return pipe (3) is connected on the tower body (41) above the packing layer A (7), and a distributor A (6) is arranged on the public rectification section (5) between the top of the tower return pipe (3) and the packing layer A (7).
3. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: the lower end of the tower body (41) 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 production pipe (26) and one end of a tower bottom return pipe (23), a reboiler (24) is arranged on the tower bottom return pipe (23), and the other end of the tower bottom return pipe (23) is connected on the tower body (41) below the packing layer B (40).
4. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: the semicircular packing layer E (27) and the semicircular packing layer A (10) are equal in height, and a sealing strip A (47) is arranged at the top of the gap A (9).
5. The partition rectifying tower for separating the mixed fraction of C8-C11 normal paraffins according to claim 1, wherein: the semicircular packing layer H (38) and the semicircular packing layer D (21) are equal in height, and a sealing strip B (48) is arranged at the bottom of the gap B (22).
6. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: a feed pipe (32) which penetrates through the rectification feed section (29) is arranged on the tower body (41) between the semicircular packing layer F (28) and the semicircular packing layer G (36), and a preheater (31) is arranged on the feed pipe (32).
7. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: a middle extraction pipe (14) which runs through the middle side line extraction section (13) is arranged on the tower body (41) between the semicircular packing layer B (12) and the semicircular packing layer C (20).
8. The partition rectifying tower for separating the mixed fraction of C8-C11 normal paraffins according to claim 1, wherein: a distributor B (8) is arranged in a common rectification section (5) between the packing layer A (7) and the floating packing layer A, and a distributor C (39) is arranged in a common stripping section (42) between the floating packing layer B and the packing layer B (40).
9. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: the middle part of the lower end of the spacer A (11) is provided with a spacer A (18), the middle part of the upper end of the spacer B (37) is provided with a spacer B (30), and the two sides of the spacer A (11) and the two sides of the spacer B (37) are respectively limited in a clamping groove (19) formed in the side wall of the cavity.
10. The splitter distillation column for the separation of a mixed fraction of C8-C11 normal paraffins as recited in claim 1, wherein: the end part of the rotating shaft A (17) is arranged in a blind hole (43) arranged on the side wall of the middle side line extraction section (13), and the end part of the rotating shaft B (33) is arranged in another blind hole (43) arranged on the side wall of the rectification feeding section (29).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645350B1 (en) * | 2001-06-15 | 2003-11-11 | Uop Llc | Dividing wall column fractionation tray |
| JP2005095721A (en) * | 2003-09-22 | 2005-04-14 | Nippon Steel Chem Co Ltd | Internal reflux type multi-purpose distillation tower, and batch type distillation method using the same |
| CN104447636A (en) * | 2014-11-07 | 2015-03-25 | 济南大学 | Method and device for separating ethanol-tetrahydrofuran by extractive distillation by using dividing tower |
| CN106377918A (en) * | 2016-11-17 | 2017-02-08 | 洛阳和梦科技有限公司 | Multi-section combination type non-uniform-division separation plate rectification tower device with gas and liquid regulating controller |
| CN112174767A (en) * | 2020-09-24 | 2021-01-05 | 新疆工程学院 | Method and device for separating carbon pentaalkane mixture |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007345353B2 (en) * | 2007-01-19 | 2013-02-21 | Exxonmobil Upstream Research Company | Integrated controlled freeze zone (CFZ) tower and dividing wall (DWC) for enhanced hydrocarbon recovery |
| ITPI20110018A1 (en) * | 2011-02-21 | 2012-08-22 | Sime S R L | METHOD AND APPARATUS FOR THE SOFTENING AND / OR DEHYDRATION OF A GAS BASED ON HYDROCARBONS, IN PARTICULAR NATURAL GAS |
-
2021
- 2021-05-18 CN CN202110537608.8A patent/CN113262515B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6645350B1 (en) * | 2001-06-15 | 2003-11-11 | Uop Llc | Dividing wall column fractionation tray |
| JP2005095721A (en) * | 2003-09-22 | 2005-04-14 | Nippon Steel Chem Co Ltd | Internal reflux type multi-purpose distillation tower, and batch type distillation method using the same |
| CN104447636A (en) * | 2014-11-07 | 2015-03-25 | 济南大学 | Method and device for separating ethanol-tetrahydrofuran by extractive distillation by using dividing tower |
| CN106377918A (en) * | 2016-11-17 | 2017-02-08 | 洛阳和梦科技有限公司 | Multi-section combination type non-uniform-division separation plate rectification tower device with gas and liquid regulating controller |
| CN112174767A (en) * | 2020-09-24 | 2021-01-05 | 新疆工程学院 | Method and device for separating carbon pentaalkane mixture |
Non-Patent Citations (3)
| Title |
|---|
| 姚又省.基于ＤＷＣ的氯硅烷精馏计算初探.《四川化工》.2018,第21卷(第3期),39-52. * |
| 方静.Kaibel隔壁塔用于四组分精馏的模拟优化和实验研究.《化工进展》.2018,第37卷(第5期),1646-1654. * |
| 胡雨奇.用于分离三氯氢硅合成过程中主副产品的隔壁塔模拟.《化工进展》.2015,第34卷(第5期),1488-1492. * |
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Denomination of invention: A Partition Distillation Column for Separation of Mixed Fractions of C8-C11 Normal Alkanes 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 |