CN111500306A - Double-layer rectifying tower for preparing light white oil - Google Patents
Double-layer rectifying tower for preparing light white oil Download PDFInfo
- Publication number
- CN111500306A CN111500306A CN202010486071.2A CN202010486071A CN111500306A CN 111500306 A CN111500306 A CN 111500306A CN 202010486071 A CN202010486071 A CN 202010486071A CN 111500306 A CN111500306 A CN 111500306A
- Authority
- CN
- China
- Prior art keywords
- tower
- cavity
- annular
- double
- light white
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003921 oil Substances 0.000 claims abstract description 49
- 239000002199 base oil Substances 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000009835 boiling Methods 0.000 claims description 12
- 238000005984 hydrogenation reaction Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000004821 distillation Methods 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 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
- 239000010687 lubricating oil 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
- 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
- 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
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010057 rubber processing Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
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, an outer tower (3) is covered on 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) fixedly connected with the outer edge surface and the inner wall of the outer tower (3) and annular tower plates B (13) fixedly connected with the inner edge surface and the outer wall of the inner tower (8) are arranged in a cavity A (19) at intervals, annular tower plates C (15) fixedly connected with the outer edge surface and the inner wall of the inner tower (8) and annular tower plates D (17) fixedly connected with the inner edge surface and the outer wall of the heating rod (20) are arranged in a cavity B (22) at intervals; the invention realizes the purposes of saving the number of the rectifying towers, saving energy and reducing consumption by adding the double-layer rectifying tower which roughly divides the hydrogenated base oil after impurity removal into a plurality of mixed oil with distillation ranges by utilizing the thermal radiation principle in the rectifying stage for preparing the light white oil.
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 oil, also known as white oil or liquid paraffin. A colorless, transparent, odorless, and non-glittering liquid oil. Generally, the lubricating oil is prepared by deep sulfuric acid refining and hydrogenation of lubricating oil fraction with viscosity (40 ℃). 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, instruments, electric power, agriculture and the like. The light white oil is prepared from petroleum distillate and synthetic oil distillate by hydrofining and precise fractionation, and is suitable for industries such as 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 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 source, various product types, high viscosity and the like, and is 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 that the environmental protection requirement is higher and higher, the problem that how to effectively simplify the reaction process and achieve the requirement of energy conservation and consumption reduction is to be solved is 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 characterized in that the double-layer rectifying tower is additionally arranged in the rectifying stage for preparing the light white oil, and the hydrogenated base oil after impurity removal is firstly roughly divided into mixed oil with a plurality of distillation ranges by utilizing the thermal radiation principle, so that the aims of saving the number of the rectifying towers, saving energy and reducing consumption are fulfilled.
In order to realize the purpose, the invention adopts the following technical scheme:
a double-layer rectifying tower for preparing light white oil is composed of an internal tower with a cavity B, an external tower on the top of internal tower, a cavity A between said internal and external towers, two convex plates extending downward and connected to internal tower, oil tubes between the ends of said convex plates and internal tower, annular tower plates A with external edge surface and internal wall, annular tower plates B with internal edge surface and external wall, and the heating rods between annular tower plates A, external wall and internal wall, heating rods in central position of internal tower, and annular tower plates C with external edge surface and internal wall, internal edge surface and external wall, and annular tower plates D with internal edge surface and external wall, Gaps are also respectively arranged between the annular tower plate D and the inner wall of the inner tower, the middle part of the outer tower is provided with a hydrogenated base oil inlet pipe, the top of the outer tower is provided with a low-boiling-point mixed hydrogenated base oil outlet pipe, the top of the inner tower is provided with a medium-low to medium-high-boiling-point mixed hydrogenated base oil outlet pipe which penetrates through the cavity A and extends to the outside of the outer tower, and the bottom of the inner tower is provided with a high-boiling-point mixed hydrogenated base oil outlet pipe.
The double-layer rectifying tower for preparing the light white oil is characterized in that the lower ends of the two protruding plates are respectively provided with a hemispherical head, and a connecting oil pipe penetrating through the cavity A and the cavity B is respectively arranged between the lower ends of the two hemispherical heads and the inner tower.
The double-layer rectifying tower for preparing the light white oil is characterized in that a flange A extending upwards is arranged on the inner edge surface of the annular tower plate A, and a flange B extending upwards is arranged on the outer edge surface of the annular tower plate B.
The double-layer rectifying tower for preparing the light white oil is characterized in that a flange C extending upwards is arranged on the inner edge surface of the annular tower plate C, and a flange D extending upwards is arranged on the outer edge surface of the annular tower plate D.
The double-layer rectifying tower for preparing the light white oil is characterized in that the annular tower plate A, the annular tower plate B, the annular tower plate C and the annular tower plate D are respectively provided with a liquid leakage hole.
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 through hole penetrating through the outer part of the inner tower and the cavity C is arranged in one of the supporting rods at the lower end of the inner tower.
One end of a power cord penetrates into the cavity C from the outside of the through hole 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, the double-layer rectifying tower which roughly divides the hydrogenated base oil after impurity removal into a plurality of distillation range mixed oil by using the thermal radiation principle is additionally arranged in the rectifying stage for preparing the light white oil, so that the aims of saving the number of the rectifying towers, saving energy and reducing consumption are fulfilled; the invention has novel structure, obvious energy saving and consumption reduction and good use effect, fully utilizes the principle of heat radiation and is suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic structural view of a ring tray A of the present invention;
FIG. 4 is a schematic structural view of a ring tray B of the present invention.
In the figure: 1. a low-distillation-point mixed hydrogenated base oil outlet pipe; 2. a mixed hydrogenated base oil outlet pipe with medium-low to medium-high boiling points; 3. an outer tower; 4. a hydrogenated base oil inlet pipe; 5. a protruding plate; 6. a hemispherical head; 7. connecting an oil pipe; 8. an inner tower; 9. a high-distillation-point mixed hydrogenated base oil outlet pipe; 10. flanging A; 11. an annular tower plate A; 12. flanging B; 13. an annular tower plate B; 14. flanging C; 15. an annular column plate C; 16. flanging D; 17. an annular column plate D; 18. a weep 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 bar; 25. perforating; 26. a power line.
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 double-layer rectifying tower for preparing the light white oil comprises an inner tower 8, a cavity B22 is arranged in the inner tower 8, an outer tower 3 is covered on the upper part of the inner tower 8, a cavity A19 is arranged between the outer tower 3 and the inner tower 8, two opposite sides of the bottom of the outer tower 3 are respectively provided with a convex plate 5 which extends downwards and is connected with the bottom of the inner tower 8, the lower ends of the two convex plates 5 are respectively provided with a hemispherical head 6, a connecting oil pipe 7 which penetrates through the cavity A19 and the cavity B22 is respectively arranged between the lower ends of the two hemispherical heads 6 and the inner tower 8, an annular tower plate A11 of which the outer edge surface is fixedly connected with the inner wall of the outer tower 3 and an annular tower plate B13 of which the inner edge surface is fixedly connected with the outer wall of the inner tower 8 are arranged in the cavity A19 at intervals, an upward extending flanging A10 is arranged on the inner edge surface of the annular tower plate A11, an upward extending flanging B12 is arranged on the outer edge surface of the annular tower plate B13 and an upward extending, Gaps are respectively arranged between the annular tower plate B13 and the inner wall of the outer tower 3, a heating rod 20 is arranged at the central part of the inner tower 8, a cavity C23 is arranged in the heating rod 20, a spiral heating pipe 21 is arranged in the cavity C23, annular tower plates C15 of which the outer edge surfaces are fixedly connected with the inner wall of the inner tower 8 and annular tower plates D17 of which the inner edge surfaces are fixedly connected with the outer wall of the heating rod 20 are arranged in the cavity B22 at intervals, upward extending flanges C14 are arranged on the inner edge surfaces of the annular tower plates C15, upward extending flanges D16 are arranged on the outer edge surfaces of the annular tower plates D17, gaps are also respectively arranged between the outer walls of the annular tower plates C15 and the heating rod 20 and between the annular tower plates D17 and the inner wall of the inner tower 8, liquid leakage holes 18 are respectively arranged on the annular tower plates A11, B13, C15 and D17, a hydrogenation base oil inlet pipe 4 is arranged in the middle part of the outer tower 3, and a low-fraction mixed base oil outlet pipe, the top of the inner tower 8 is provided with a medium-low to medium-high boiling point mixed hydrogenation base oil outlet pipe 2 which penetrates through the cavity A19 and extends to the outside of the outer tower 3, the bottom of the inner tower 8 is provided with a high boiling point mixed hydrogenation base oil outlet pipe 9, support 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 support rod 24 at the lower end of the inner tower 8 is internally provided with a through hole 25 which penetrates through the outside of the inner tower 8 and the cavity C23, and one end of a power wire 26 penetrates through the cavity C23 from the outside of the through hole 25 and is connected with the.
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, the 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, annular trays A11 and annular trays B13 arranged at intervals in the cavity A19 fractionate the hydrogenated base oil, the low-boiling point mixed hydrogenated base oil mixed in the hydrogenated base oil flows out from a low-boiling point mixed hydrogenated base oil outlet pipe 1 arranged at the top of the outer tower 3 after being gasified and is finely cut into a plurality of light white oils with different labels through the required rectifying tower, the rest hydrogenated base oil flows into a cavity B22 from a connecting oil pipe 7 arranged at the bottom of the cavity A19, the rest hydrogenated base oil is fractionated by annular trays C15 and annular trays D17 which are arranged at intervals in the cavity B22, the mixed hydrogenated base oil with the medium-low to medium-high boiling point in the hydrogenated base oil is gasified and then flows out from a mixed hydrogenated base oil outlet pipe 2 with the medium-low to medium-high boiling point arranged at the top of an inner tower 8 and is finely cut into a plurality of light white oils with different labels by a required rectifying tower under the action of high temperature in the cavity B22, the mixed hydrogenated base oil with the high boiling point is not gasified and flows out from a mixed hydrogenated base oil outlet pipe 9 with the high boiling point arranged at the bottom of the inner tower 8 and is finely cut into a plurality of light white oils with different labels by the required rectifying tower.
The present invention is not described in detail in the prior art.
Claims (8)
1. A double-layer rectifying tower for preparing light white oil is characterized in that: comprises an inner tower (8), a cavity B (22) is arranged in the inner tower (8), an outer tower (3) is covered on the upper part of the inner tower (8), a cavity A (19) is arranged between the outer tower (3) and the inner tower (8), the opposite two sides of the bottom of the outer tower (3) are respectively provided with a convex plate (5) which extends downwards and the bottom of which is connected with the inner tower (8), a connecting oil pipe (7) which runs through the cavity A (19) and the cavity B (22) is respectively arranged between the end part of the two convex plates (5) and the inner tower (8), annular tower plates A (11) of which the outer edge surfaces are fixedly connected with the inner wall of the outer tower (3) and annular tower plates B (13) of which the inner edge surfaces are fixedly connected with the outer wall of the inner tower (8) are arranged in the cavity A (19) at intervals, annular tower plates B (13) of which are fixedly connected with the outer edge surfaces and the outer wall of the inner tower (8) and annular tower plates B (13) and the inner wall of the outer tower (, annular column plate C (15) of outer fringe face and inner tower (8) inner wall rigid coupling is equipped with at the interval in cavity B (22), annular column plate D (17) of inner fringe face and heating rod (20) outer wall rigid coupling, at annular column plate C (15) and heating rod (20) outer wall, also be equipped with the gap between annular column plate D (17) and inner tower (8) inner wall respectively, the middle part of outer tower (3) is equipped with hydrogenation base oil and advances oil pipe (4), top at outer tower (3) is equipped with low boiling point and mixes hydrogenation base oil outlet pipe (1), top at inner tower (8) is equipped with and passes cavity A (19) and extends to outer tower (3) outside well low to well boiling point and mixes hydrogenation base oil outlet pipe (2), bottom at inner tower (8) is equipped with high boiling point and mixes hydrogenation base oil outlet pipe (9).
2. The double-layer rectifying tower for preparing light white oil as set forth in claim 1, wherein: the lower ends of the two convex plates (5) are respectively provided with a hemispherical head (6), and a connecting oil pipe (7) which runs through the cavity A (19) and the cavity B (22) is respectively arranged between the lower ends of the two hemispherical heads (6) and the inner tower (8).
3. The double-layer rectifying tower for preparing light white oil as set forth in claim 1, wherein: the inner edge surface of the annular tower plate A (11) is provided with a flange A (10) extending upwards, and the outer edge surface of the annular tower plate B (13) is provided with a flange B (12) extending upwards.
4. The double-layer rectifying tower for preparing light white oil as set forth in claim 1, wherein: the inner edge surface of the annular tower plate C (15) is provided with a flange C (14) extending upwards, and the outer edge surface of the annular tower plate D (17) is provided with a flange D (16) extending upwards.
5. The double-layer rectifying tower for preparing light white oil as set forth in claim 1, wherein: liquid leakage holes (18) are respectively arranged on the annular tower plate A (11), the annular tower plate B (13), the annular tower plate C (15) and the annular tower plate D (17).
6. The double-layer rectifying tower for preparing light white oil as set forth in claim 1, wherein: a cavity C (23) is arranged in the heating rod (20), and a spiral heating pipe (21) is arranged in the cavity C (23).
7. The double-layer rectifying tower for preparing light white oil as set forth in claim 6, wherein: supporting 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 through hole (25) penetrating through the outer part of the inner tower (8) and the cavity C (23) is arranged in one of the supporting rods (24) at the lower end of the inner tower (8).
8. The double-layer rectifying tower for preparing light white oil as set forth in claim 7, wherein: one end of a power wire (26) penetrates into the cavity C (23) from the outside of the through hole (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 true CN111500306A (en) | 2020-08-07 |
| CN111500306B CN111500306B (en) | 2024-04-12 |
Family
ID=71865387
Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111500306B (en) |
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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111500306B (en) | 2024-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xu et al. | Production of hydrocarbon fuels from pyrolysis of soybean oils using a basic catalyst | |
| CN212655741U (en) | Double-layer rectifying tower for preparing light white oil | |
| Xu et al. | Production of biofuels from high-acid-value waste oils | |
| CN111500306B (en) | Double-layer rectifying tower for preparing light white oil | |
| Liu et al. | Transesterification of waste oil to biodiesel using Brønsted acid ionic liquid as catalyst | |
| CN103242966A (en) | Technology process for producing biodiesel and key preparation device | |
| CN101215475B (en) | Middle and low temperature preparation method for biological diesel oil by using plants fruits and seeds oil and special-purpose distillation tower for the same | |
| CN106278879A (en) | A kind of preparation method of camellia oleosa seed oil base biological lubricant trimethylolpropane C18 fatty acid three ester | |
| CN111500318B (en) | Reaction device for preparing light white oil and application method thereof | |
| CN212655746U (en) | Reaction device for preparing light white oil | |
| CN212512598U (en) | Heat exchanger for preparing light white oil | |
| RU2682631C1 (en) | Fluid to oil distillation method with rectification | |
| CN105920866A (en) | Precise separation device for high-purity n-heptane | |
| CN103936556B (en) | A kind of method preparing methyl alcohol from biomass single stage method | |
| CN1030070A (en) | Single tower debenzolizing process and novel debenzolizing tower | |
| CN212548363U (en) | Tower plate structure of rectifying tower for producing light white oil | |
| CN212548362U (en) | Rectifying tower plate structure for preparing light white oil | |
| CN101353293A (en) | Method for producing 2-tertiary butyl-p-cresol and 6-tertiary butyl-m-cresol | |
| CN104338339A (en) | Rectifying tower for separating and purifying ethyl hexanoate | |
| CN114713249B (en) | Catalyst for preparing dimer acid and trimer acid and application method thereof | |
| CN203598512U (en) | High-purity quartz and spring packing fractionating column | |
| ES2131604T3 (en) | IMPROVED PROCEDURE FOR PREPARING ACIL-AMINOPHENOLS. | |
| CN213506654U (en) | System for strengthening toluene hydrogenation reaction | |
| Singh et al. | A continuous-flow reactive distillation reactor for biodiesel preparation from seed oils | |
| CN204159060U (en) | A kind of de-high tower slightly heating up in a steamer m-methyl benzoic acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |