CN111500306B - Double-layer rectifying tower for preparing light white oil - Google Patents
Double-layer rectifying tower for preparing light white oil Download PDFInfo
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- CN111500306B CN111500306B CN202010486071.2A CN202010486071A CN111500306B CN 111500306 B CN111500306 B CN 111500306B CN 202010486071 A CN202010486071 A CN 202010486071A CN 111500306 B CN111500306 B CN 111500306B
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- double
- light white
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- 239000003921 oil Substances 0.000 claims abstract description 46
- 239000002199 base oil Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000004821 distillation Methods 0.000 abstract description 14
- 238000005984 hydrogenation reaction Methods 0.000 abstract description 13
- 230000005855 radiation Effects 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
A double-layer rectifying tower for preparing light white oil relates to a rectifying device, wherein an outer tower (3) is covered at the upper part of an inner tower (8), a heating rod (20) is arranged at the central part of the inner tower (8), annular tower plates A (11) with outer edge surfaces fixedly connected with the inner wall of the outer tower (3), annular tower plates B (13) with inner edge surfaces fixedly connected with the outer wall of the inner tower (8) are arranged in a cavity A (19) at intervals, annular tower plates C (15) with outer edge surfaces fixedly connected with the inner wall of the inner tower (8) and annular tower plates D (17) with inner edge surfaces fixedly connected with the outer wall of the heating rod (20) are arranged in a cavity B (22) at intervals; according to the invention, the double-layer rectifying tower which coarsely divides the hydrogenation base oil after impurity removal into a plurality of distillation range mixed oils by utilizing the heat radiation principle is added in the rectifying stage for preparing the light white oil, so that the purposes of saving the number of the rectifying towers and saving energy and reducing consumption are realized.
Description
Technical Field
The invention relates to a rectifying device, in particular to a double-layer rectifying tower for preparing light white oil.
Background
White oils, also known as white oils or liquid paraffin. A colorless transparent odorless liquid oil material which does not emit fluorescent light. Is generally prepared from lubricating oil fraction with viscosity (40 ℃) through refining and hydrogenation with deep sulfuric acid. The method is widely applied to the fields of daily chemical industry, medicine production, food processing, fiber and textile, polystyrene resin, petrochemical industry, plastic and rubber processing, leather processing, instrument and power, agriculture and the like. The light white oil is obtained by hydrofining and precise fractionation of petroleum fraction and synthetic oil fraction serving as raw materials, and is suitable for the industries of special equipment calibration, metal processing, daily chemicals and the like, wherein the food-grade white oil has the deepest refining degree and the strictest quality requirement. The existing method for preparing the light white oil is generally a white oil production process by a hydrogenation method, and the white oil production process by the hydrogenation method has the advantages of no pollution, high yield, wide raw material sources, multiple product types, high viscosity and the like, and has been rapidly developed and widely applied. The device for preparing the light white oil generally needs to use a plurality of rectifying towers to accurately cut the hydrogenated base oil, but under the condition of higher and higher environmental protection requirements, how to effectively simplify the reaction process and achieve the requirements of energy conservation and consumption reduction is a difficult problem to be solved.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a double-layer rectifying tower for preparing light white oil, which is used for realizing the purposes of saving the number of the rectifying towers, saving energy and reducing consumption by adding the double-layer rectifying tower for coarsely dividing the impurity-removed hydrogenated base oil into a plurality of mixed oils in a distillation range by utilizing a heat radiation principle in the rectifying stage for preparing the light white oil.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
a double-layer rectifying tower for preparing light white oil comprises an inner tower, a cavity B is arranged in the inner tower, an outer tower is covered on the upper part of the inner tower, a cavity A is arranged between the outer tower and the inner tower, protruding plates which extend downwards and are connected with the inner tower are respectively arranged on two opposite sides of the bottom of the outer tower, connecting oil pipes which penetrate through the cavity A and the cavity B are respectively arranged between the end parts of the two protruding plates and the inner tower, an annular tower plate A with an outer edge surface fixedly connected with the inner wall of the outer tower, an annular tower plate B with an inner edge surface fixedly connected with the outer wall of the inner tower are arranged in the cavity A at intervals, gaps are respectively arranged between the annular tower plate A and the outer wall of the inner tower, the annular tower plate B and the inner wall of the outer tower, the central part of the inner tower is provided with a heating rod, the cavity B is internally provided with an annular column plate C, an annular column plate D, a gap is respectively arranged between the annular column plate C and the outer wall of the heating rod, between the annular column plate D and the inner wall of the inner tower, a hydrogenation base oil inlet pipe is arranged in the middle of the outer tower, the top of the outer tower is provided with a low-distillation-point mixed hydrogenation base oil outlet pipe, the top of the inner tower is provided with a medium-low-to medium-high-distillation-point mixed hydrogenation base oil outlet pipe penetrating through the cavity A and extending to the outside of the outer tower, and the bottom of the inner tower is provided with a high-distillation-point mixed hydrogenation base oil outlet pipe.
The double-layer rectifying tower for preparing the light white oil is characterized in that semi-ball heads are respectively arranged at the lower ends of the two protruding plates, and connecting oil pipes penetrating through the cavity A and the cavity B are respectively arranged between the lower ends of the two semi-ball heads and the inner tower.
The double-layer rectifying tower for preparing the light white oil is characterized in that an upward extending flange A is arranged on the inner edge surface of the annular column plate A, and an upward extending flange B is arranged on the outer edge surface of the annular column plate B.
The double-layer rectifying tower for preparing the light white oil is characterized in that an upward extending flange C is arranged on the inner edge surface of the annular column plate C, and an upward extending flange D is arranged on the outer edge surface of the annular column plate D.
The double-layer rectifying tower for preparing the light white oil is characterized in that liquid leakage holes are respectively formed in the annular column plate A, the annular column plate B, the annular column plate C and the annular column plate D.
The double-layer rectifying tower for preparing the light white oil is characterized in that a cavity C is arranged in the heating rod, and a spiral heating pipe is arranged in the cavity C.
The double-layer rectifying tower for preparing the light white oil is characterized in that supporting rods are respectively arranged between the top end of the heating rod and the top end of the cavity B and between the bottom end of the heating rod and the bottom end of the cavity B, and a perforation which penetrates through the outer part of the inner tower and the cavity C is arranged in one supporting rod at the lower end of the inner tower.
The double-layer rectifying tower for preparing the light white oil is characterized in that one end of a power line penetrates into the cavity C from the outside of the perforation and is connected with the spiral heating pipe.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the double-layer rectifying tower for preparing the light white oil, disclosed by the invention, the double-layer rectifying tower for roughly dividing the impurity-removed hydrogenated base oil into a plurality of mixed oils in a distillation range by utilizing a heat radiation principle is added in the rectifying stage for preparing the light white oil, so that the purposes of saving the number of the rectifying towers and saving energy and reducing consumption are realized; the invention has novel structure, remarkable energy saving and consumption reduction, good use effect, fully utilizes the principle of heat radiation and is suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the structure of the annular tray A of the present invention;
FIG. 4 is a schematic view of the structure of the annular tray B of the present invention.
In the figure: 1. a low-distillation point mixed hydrogenation base oil outlet pipe; 2. a middle-low-middle-high distillation point mixed hydrogenation base oil outlet pipe; 3. an outer tower; 4. a hydrogenated base oil inlet pipe; 5. a protruding plate; 6. a semi-ball head; 7. connecting an oil pipe; 8. an inner tower; 9. a high distillation point mixed hydrogenation base oil outlet pipe; 10. flanging A; 11. an annular column plate A; 12. b, flanging; 13. an annular column plate B; 14. flanging C; 15. an annular column plate C; 16. flanging D; 17. an annular column plate D; 18. a weeping hole; 19. a cavity A; 20. a heating rod; 21. a spiral heating pipe; 22. a cavity B; 23. a cavity C; 24. a support rod; 25. perforating; 26. and a power supply line.
Detailed Description
The invention will be explained in more detail by the following examples, which are not intended to limit the invention thereto, and the purpose of the present invention is to protect all changes and modifications within the scope of the invention;
the double-layer rectifying tower for preparing light white oil, which is described with reference to figures 1-4, comprises an inner tower 8, a cavity B22 is arranged in the inner tower 8, an outer tower 3 is covered at the upper part of the inner tower 8, a cavity A19 is arranged between the outer tower 3 and the inner tower 8, protruding plates 5 which extend downwards are respectively arranged at two opposite sides of the bottom of the outer tower 3 and are connected with the inner tower 8, a semi-ball head 6 is respectively arranged at the lower ends of the two protruding plates 5, connecting oil pipes 7 which penetrate through the cavity A19 and the cavity B22 are respectively arranged between the lower ends of the two semi-ball heads 6 and the inner tower 8, an annular tower plate A11 with an outer edge surface fixedly connected with the inner wall of the outer tower 3, an annular tower plate B13 with an inner edge surface fixedly connected with the outer wall of the outer tower 3 are arranged in the cavity A19, an annular tower B10 extending upwards is arranged at the inner edge surface of the annular tower A11, a flanging B12 extending upwards is arranged at the outer edge surface of the annular tower B13, gaps are respectively arranged between the annular tower A11 and the outer wall of the inner tower 8, the annular tower B13 and the inner wall of the outer tower 3, the central part of the inner tower 8 is provided with a heating rod 20, a cavity C23 is arranged in the heating rod 20, a spiral heating pipe 21 is arranged in the cavity C23, an annular tray C15 with an outer edge surface fixedly connected with the inner wall of the inner tower 8, an annular tray D17 with an inner edge surface fixedly connected with the outer wall of the heating rod 20 are arranged in the cavity B22 at intervals, an upward extending flange C14 is arranged on the inner edge surface of the annular tray C15, an upward extending flange D16 is arranged on the outer edge surface of the annular tray D17, gaps are respectively arranged between the annular tray C15 and the outer wall of the heating rod 20, between the annular tray D17 and the inner wall of the inner tower 8, liquid leakage holes 18 are respectively arranged on the annular tray A11, the annular tray B13, the annular tray C15 and the annular tray D17, a hydrogenated base oil inlet pipe 4 is arranged in the middle of the outer tower 3, a low-distillation-point mixed hydrogenated base oil outlet pipe 1 is arranged at the top of the outer tower 3, the top of the inner tower 8 is provided with a medium-low-medium-high distillation point mixed hydrogenation base oil outlet pipe 2 penetrating through the cavity A19 and extending to the outside of the outer tower 3, the bottom of the inner tower 8 is provided with a high distillation point mixed hydrogenation base oil outlet pipe 9, supporting rods 24 are respectively arranged between the top end of the heating rod 20 and the top end of the cavity B22 and between the bottom end of the heating rod 20 and the bottom end of the cavity B22, one supporting rod 24 at the lower end of the inner tower 8 is internally provided with a perforation 25 penetrating through the outside of the inner tower 8 and the cavity C23, and one end of a power line 26 penetrates into the cavity C23 from the outside of the perforation 25 and is connected with the spiral heating pipe 21.
When the double-layer rectifying tower for preparing the light white oil is used, a power line 26 is connected with a power supply, a spiral heating pipe 21 is started, the spiral heating pipe 21 heats a heating rod 20 to a required temperature, hydrogenated base oil enters a cavity A19 from a hydrogenated base oil inlet pipe 4 arranged in the middle of an outer tower 3, the heating rod 20 heats a cavity B22 and transfers heat from the tower wall of an inner tower 8 to the cavity A19, the temperature in the cavity A19 is 1/4 to 1/2 of the temperature in the cavity B22, the hydrogenated base oil is fractionated by an annular column plate A11 and an annular column plate B13 which are arranged in the cavity A19 at intervals, the mixed hydrogenated base oil at a low distillation point in the hydrogenated base oil is gasified, flows out from a hydrogenated base oil outlet pipe 1 at the low distillation point arranged at the top of the outer tower 3 and is finely cut into a plurality of light white oils with different marks by the required rectifying tower, the residual hydrogenated base oil flows into a cavity B22 from a connecting oil pipe 7 arranged at the bottom of the cavity A19, the residual hydrogenated base oil is fractionated by an annular column plate C15 and an annular column plate D17 which are arranged at intervals in the cavity B22, and under the action of high temperature in the cavity B22, the mixed hydrogenated base oil with middle and low distillation points in the hydrogenated base oil flows out from a mixed hydrogenated base oil outlet pipe 2 with middle and low distillation points arranged at the top of an inner tower 8 after being gasified and is finely cut into various light white oils with different labels by a required rectifying tower, and the mixed hydrogenated base oil with high distillation points does not flow out from a mixed hydrogenated base oil outlet pipe 9 with high distillation points arranged at the bottom of the inner tower 8 and is finely cut into various light white oils with different labels by the required rectifying tower.
The invention is not described in detail in the prior art.
Claims (5)
1. A double-deck rectifying column for preparing light white oil, characterized by: comprises an inner tower (8), a cavity B (22) is arranged in the inner tower (8), an outer tower (3) is covered at the upper part of the inner tower (8), a cavity A (19) is arranged between the outer tower (3) and the inner tower (8), protruding plates (5) which extend downwards and are connected with the inner tower (8) are respectively arranged at the two opposite sides of the bottom of the outer tower (3), connecting oil pipes (7) which penetrate through the cavity A (19) and the cavity B (22) are respectively arranged between the end parts of the two protruding plates (5) and the inner tower (8), an annular tray A (11) with an outer edge surface fixedly connected with the inner wall of the outer tower (3), an annular tray B (13) with an inner edge surface fixedly connected with the outer wall of the inner tower (8) are arranged in the cavity A (19), a gap is respectively arranged between the annular tray A (11) and the outer wall of the inner tower (8), a gap is respectively arranged between the annular tray B (13) and the inner wall of the outer tower (3), a heating rod (20) is respectively arranged at the central part of the inner tower (8), an annular tray C (15) with a gap is respectively arranged between the annular tray B (20) and the annular tray C (17) fixedly connected with the annular tray C (17) and the annular tray (17) which are fixedly connected with the annular tray C (17), the middle part of the outer tower (3) is provided with a hydrogenated base oil inlet pipe (4), the top of the outer tower (3) is provided with a low-distillation-point mixed hydrogenated base oil outlet pipe (1), the top of the inner tower (8) is provided with a medium-low-medium-high-distillation-point mixed hydrogenated base oil outlet pipe (2) which penetrates through the cavity A (19) and extends to the outside of the outer tower (3), and the bottom of the inner tower (8) is provided with a high-distillation-point mixed hydrogenated base oil outlet pipe (9);
the lower ends of the two convex plates (5) are respectively provided with a half ball head (6), and a connecting oil pipe (7) which penetrates through a cavity A (19) and a cavity B (22) is respectively arranged between the lower ends of the two half ball heads (6) and the inner tower (8);
the inner edge surface of the annular column plate A (11) is provided with an upward extending flange A (10), and the outer edge surface of the annular column plate B (13) is provided with an upward extending flange B (12);
the inner edge surface of the annular tray C (15) is provided with an upward extending flange C (14), and the outer edge surface of the annular tray D (17) is provided with an upward extending flange D (16).
2. The double-deck rectifying column for preparing light white oil according to claim 1, characterized in that: the annular column plate A (11), the annular column plate B (13), the annular column plate C (15) and the annular column plate D (17) are respectively provided with liquid leakage holes (18).
3. The double-deck rectifying column for preparing light white oil according to claim 1, characterized in that: a cavity C (23) is arranged in the heating rod (20), and a spiral heating pipe (21) is arranged in the cavity C (23).
4. A double-deck rectifying column for preparing light white oil according to claim 3, characterized in that: support rods (24) are respectively arranged between the top end of the heating rod (20) and the top end of the cavity B (22) and between the bottom end of the heating rod (20) and the bottom end of the cavity B (22), and a perforation (25) penetrating through the outside of the inner tower (8) and the cavity C (23) is arranged in one support rod (24) at the lower end of the inner tower (8).
5. The double-layer rectifying tower for preparing light white oil according to claim 4, characterized in that: one end of a power wire (26) penetrates into the cavity C (23) from the outside of the perforation (25) and is connected with the spiral heating pipe (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010486071.2A CN111500306B (en) | 2020-06-01 | 2020-06-01 | Double-layer rectifying tower for preparing light white oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010486071.2A CN111500306B (en) | 2020-06-01 | 2020-06-01 | Double-layer rectifying tower for preparing light white oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111500306A CN111500306A (en) | 2020-08-07 |
| CN111500306B true CN111500306B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010486071.2A Active CN111500306B (en) | 2020-06-01 | 2020-06-01 | Double-layer rectifying tower for preparing light white oil |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT60455B (en) * | 1911-08-16 | 1913-08-11 | Abram Golodetz | Rectifier. |
| US4615770A (en) * | 1983-10-14 | 1986-10-07 | Rakesh Govind | Distillation column and process |
| JPH0295501U (en) * | 1989-01-12 | 1990-07-30 | ||
| CN101991968A (en) * | 2010-10-14 | 2011-03-30 | 天津大学 | Internal heat integration energy-saving rectification device and assembly method thereof |
| CN208482030U (en) * | 2018-04-27 | 2019-02-12 | 宜城市华威化工有限公司 | A kind of bilayer desulfurization rectifying column |
| CN210057427U (en) * | 2019-04-04 | 2020-02-14 | 南通太平洋润滑油有限公司 | A regeneration fractionating tower for lubricating oil processing |
| CN212655741U (en) * | 2020-06-01 | 2021-03-05 | 河南孟飞实业有限公司 | Double-layer rectifying tower for preparing light white oil |
-
2020
- 2020-06-01 CN CN202010486071.2A patent/CN111500306B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT60455B (en) * | 1911-08-16 | 1913-08-11 | Abram Golodetz | Rectifier. |
| US4615770A (en) * | 1983-10-14 | 1986-10-07 | Rakesh Govind | Distillation column and process |
| JPH0295501U (en) * | 1989-01-12 | 1990-07-30 | ||
| CN101991968A (en) * | 2010-10-14 | 2011-03-30 | 天津大学 | Internal heat integration energy-saving rectification device and assembly method thereof |
| CN208482030U (en) * | 2018-04-27 | 2019-02-12 | 宜城市华威化工有限公司 | A kind of bilayer desulfurization rectifying column |
| CN210057427U (en) * | 2019-04-04 | 2020-02-14 | 南通太平洋润滑油有限公司 | A regeneration fractionating tower for lubricating oil processing |
| CN212655741U (en) * | 2020-06-01 | 2021-03-05 | 河南孟飞实业有限公司 | Double-layer rectifying tower for preparing light white oil |
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|---|---|
| CN111500306A (en) | 2020-08-07 |
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