CN112791437A - Split type energy-saving rectifying tower - Google Patents
Split type energy-saving rectifying tower Download PDFInfo
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- CN112791437A CN112791437A CN202110121273.1A CN202110121273A CN112791437A CN 112791437 A CN112791437 A CN 112791437A CN 202110121273 A CN202110121273 A CN 202110121273A CN 112791437 A CN112791437 A CN 112791437A
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- fixedly connected
- rectifying tower
- pipe
- rectifying 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
- B01D3/146—Multiple effect distillation
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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
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
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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
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
- B01D3/322—Reboiler specifications
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a split type energy-saving rectifying tower which comprises a first section of rectifying tower and a second section of rectifying tower, wherein the upper end of the first section of rectifying tower is fixedly connected with a conveying pipe, the other end of the conveying pipe is fixedly connected with the lower side wall of the second section of rectifying tower, the lower end of the second section of rectifying tower is fixedly connected with a return pipe, the other end of the return pipe is fixedly connected with the upper side wall of the first section of rectifying tower, the lower end of the first section of rectifying tower is provided with a reboiler, and a condenser is arranged above the second section of rectifying tower. According to the invention, the rectifying towers are connected in series, so that the temperature gradient interval is larger, and compared with the traditional two-stage rectifying tower, the energy consumption is greatly reduced.
Description
Technical Field
The invention relates to the field of rectifying towers, in particular to a split type energy-saving rectifying tower.
Background
The rectifying tower is a tower-type gas-liquid contact device for rectifying. By utilizing the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase, thereby realizing the purpose of separation. The rectifying tower is also a mass and heat transfer device which is widely applied in petrochemical production. Whether equilibrium or simple distillation, although it may perform some separation, it does not separate a mixture into a certain amount of high purity product. In petrochemical production, it is often required to obtain a product of very high purity, which can be obtained by a rectification process.
In order to improve the obtaining of high-purity materials, multiple times of rectification, namely secondary rectification or multiple times of rectification can be carried out. For example, in the second rectification, two rectification towers 101 are provided, and a boiler 102 and a condenser 103 are provided in each tower, so that the target product is obtained by two times of rectification and purification, and in the process, evaporation, condensation, evaporation and condensation of the material are required, during which a large amount of energy is consumed, as shown in fig. 3.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a split type energy-saving rectifying tower.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a split type energy-conserving rectifying column, includes first section rectifying column and second section rectifying column, the upper end fixedly connected with conveyer pipe of first section rectifying column, the other end of conveyer pipe and the lower part lateral wall fixed connection of second section rectifying column, the lower extreme fixedly connected with back flow of second section rectifying column, the other end of back flow and the upper portion lateral wall fixed connection of first section rectifying column, the lower extreme of first section rectifying column is provided with the reboiler, the top of second section rectifying column is provided with the condenser.
As a further description of the above technical solution:
the lower part lateral wall fixedly connected with third pipe of first section rectifying column, the other end of third pipe and the middle part lateral wall fixed connection of reboiler, and extend to the inside of reboiler, the one end of third pipe just is at the inside fixedly connected with distributor of reboiler.
As a further description of the above technical solution:
the upper end fixedly connected with fourth pipe of reboiler, the other end and the first section rectifying column fixed connection of fourth pipe, and extend to the inside of first section rectifying column, the one end of fourth pipe and at the inside fixedly connected with distributor of first section rectifying column.
As a further description of the above technical solution:
the one end of back flow and at the inside fixedly connected with distributor of first section rectifying column, the middle part fixedly connected with backwash pump of back flow, the one end of conveyer pipe and at the inside fixedly connected with distributor of second section rectifying column.
As a further description of the above technical solution:
the equal fixed connection level gauge of lower part lateral wall of first section rectifying column and second section rectifying column, the lower part lateral wall of first section rectifying column and second section rectifying column and in the below fixedly connected with thermometer of level gauge.
As a further description of the above technical solution:
the upper end fixedly connected with first pipe of second section rectifying column, the upper end fixed connection of the other end and the condenser of first pipe.
As a further description of the above technical solution:
and one side of the upper end of the condenser is fixedly connected with a second pipe.
As a further description of the above technical solution:
the lower extreme fixedly connected with discharging pipe of condenser, the middle part fixedly connected with filter of discharging pipe.
The working principle is as follows: when the device is used, the reboiler works, materials are evaporated, the first section of rectifying tower is used, then the gaseous materials are conveyed to the inside of the second section of rectifying tower through the conveying pipe, then the gaseous materials enter the condenser to obtain a target product, part of the materials are condensed into liquid in the rising process of the materials in the first section of rectifying tower and the second section of rectifying tower, the condensed materials in the second section of rectifying tower enter the first section of rectifying tower again through the return pipe, and the target product is collected by the metering tank after passing through the filter.
The invention has the following beneficial effects:
the invention is equivalent to a rectifying tower which is composed of a first section of rectifying tower and a second section of rectifying tower, the height of the rectifying tower is changed phase by phase, and a boiling device is arranged, so that the temperature gradient interval is larger, the target product can be obtained, the energy consumption is reduced, the number of the rectifying towers connected in series can be increased, and the temperature gradient interval is larger.
Drawings
FIG. 1 is a schematic view of a rectifying tower connection structure of a split energy-saving rectifying tower provided by the invention;
FIG. 2 is a schematic view of the lower end of a first stage rectifying tower of the split energy-saving rectifying tower provided by the invention;
fig. 3 is a schematic diagram of a conventional two-stage rectification column.
Illustration of the drawings:
1. a reboiler; 2. a first stage rectification column; 3. a return pipe; 4. a reflux pump; 5. a delivery pipe; 6. a second section of the rectifying tower; 7. a discharge pipe; 8. a filter; 9. a first tube; 10. a condenser; 11. a second tube; 12. a third tube; 13. a thermometer; 14. a liquid level meter; 15. a distributor; 16. a fourth tube; 101. a rectifying tower; 102. a boiler; 103. a condenser.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, an embodiment of the present invention is provided: a split energy-saving rectifying tower comprises a first section rectifying tower 2 and a second section rectifying tower 6, wherein the upper end of the first section rectifying tower 2 is fixedly connected with a conveying pipe 5, the other end of the conveying pipe 5 is fixedly connected with the lower side wall of the second section rectifying tower 6, the lower end of the second section rectifying tower 6 is fixedly connected with a return pipe 3, the other end of the return pipe 3 is fixedly connected with the upper side wall of the first section rectifying tower 2, the lower end of the first section rectifying tower 2 is provided with a reboiler 1 for evaporating materials, a condenser 10 is arranged above the second section rectifying tower 6, the gasified materials are condensed into liquid, when the scheme is used for production, the reboiler 1 works, the materials are evaporated, the first section rectifying tower 2 is used for conveying the gaseous materials into the second section rectifying tower 6 through the conveying pipe 5, then the gaseous materials enter the condenser 10 to obtain target products, and the materials are lifted up in the first section rectifying tower 2 and the second section rectifying tower 6, all materials are condensed into liquid, the condensed materials in the second-stage rectifying tower 6 enter the first-stage rectifying tower 2 again through the return pipe 3, the traditional two-stage rectifying tower scheme is specifically shown in figure 3, two rectifying towers are adopted, the upper end and the lower end of each rectifying tower are respectively provided with the reboiler 1 and the condenser 10, when the two-stage rectifying tower is in work, the materials generated by one rectifying tower are liquefied and then sent to the second rectifying tower for rectification again, and finally a target product is obtained, but in the process, the materials need to be boiled and condensed twice, compared with the scheme provided by the embodiment, the scheme has the advantages that the materials are boiled and condensed once, the energy consumption is greatly reduced, the energy conservation and the environmental protection are facilitated, meanwhile, the number of the rectifying towers can be continuously increased, the rectifying towers are connected in series, the rising height of gaseous materials can be increased, and the area of the materials condensed in the distilling towers is larger, the purified material is obtained, and the conveying pipe 5 has good heat preservation and insulation performance, so that excessive condensation of the material in the conveying process is avoided.
A third pipe 12 is fixedly connected to the lower side wall of the first rectifying tower 2, the other end of the third pipe 12 is fixedly connected to the middle side wall of the reboiler 1 and extends to the inside of the reboiler 1, a distributor 15 is fixedly connected to one end of the third pipe 12 and the inside of the reboiler 1, the distributor 15 is a liquid distributor, a fourth pipe 16 is fixedly connected to the upper end of the reboiler 1, the other end of the fourth pipe 16 is fixedly connected to the first rectifying tower 2 and extends to the inside of the first rectifying tower 2, a distributor 15 is fixedly connected to one end of the fourth pipe 16 and the inside of the first rectifying tower 2, the distributor 15 is a gas distributor, when the reboiler 1 is in operation, the material is gasified and enters the inside of the first rectifying tower 2 through the fourth pipe 16 and starts rising, the middle condensate and the original material of the second rectifying tower 6 enters the reboiler 1 through the third pipe 12, the reboiler 1 was replenished with material.
One end of the return pipe 3 and the inside of the first section of the rectifying tower 2 are fixedly connected with a distributor 15, the distributor 15 is a return distributor, the middle part of the return pipe 3 is fixedly connected with a return pump 4, the return pump 4 is started, the material condensed by the second section of rectifying tower 6 is sent back to the first section of rectifying tower 2 through the return pipe 3, one end of the conveying pipe 5 and the inside of the second section of rectifying tower 6 are fixedly connected with a distributor 15, the distributor 15 is a gas distributor, the side walls of the lower parts of the first section of rectifying tower 2 and the second section of rectifying tower 6 are fixedly connected with a liquid level meter 14, the temperature gauge 13 is fixedly connected with the side wall of the lower part of the first section rectifying tower 2 and the second section rectifying tower 6 and below the liquid level meter 14 and is used for detecting the temperature inside the first section rectifying tower 2 and the second section rectifying tower 6.
The first pipe 9 of upper end fixedly connected with of second section rectifying column 6, the upper end fixed connection of the other end of first pipe 9 and condenser 10, the lower extreme of first pipe 9 is used for connecting the metering tank, one side of first pipe 9 still is connected with the branch pipe simultaneously, and the upper portion lateral wall fixed connection of branch pipe and second section rectifying column 6, when the metering tank is deposited with or the discharge material, too much material in the first pipe 9, accessible branch pipe is sent back in second section rectifying column 6, avoid first pipe 9 to overflow and fill up, upper end one side fixedly connected with second pipe 11 of condenser 10, second pipe 11 is used for discharging the gas that can't condense, the lower extreme fixedly connected with discharging pipe 7 of condenser 10, the middle part fixedly connected with filter 8 of discharging pipe 7.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a split type energy-conserving rectifying column, includes first section rectifying column (2) and second section rectifying column (6), its characterized in that: the upper end fixedly connected with conveyer pipe (5) of first section rectifying column (2), the other end of conveyer pipe (5) and the lower part lateral wall fixed connection of second section rectifying column (6), the lower extreme fixedly connected with back flow (3) of second section rectifying column (6), the other end of back flow (3) and the upper portion lateral wall fixed connection of first section rectifying column (2), the lower extreme of first section rectifying column (2) is provided with reboiler (1), the top of second section rectifying column (6) is provided with condenser (10).
2. The split energy-saving rectifying tower according to claim 1, characterized in that: the lower part lateral wall fixedly connected with third pipe (12) of first section rectifying column (2), the other end of third pipe (12) and the middle part lateral wall fixed connection of reboiler (1), and extend to the inside of reboiler (1), the one end of third pipe (12) just is at inside fixedly connected with distributor (15) of reboiler (1).
3. The split energy-saving rectifying tower according to claim 1, characterized in that: the upper end fixedly connected with fourth pipe (16) of reboiler (1), the other end and first section rectifying column (2) fixed connection of fourth pipe (16), and extend to the inside of first section rectifying column (2), the one end of fourth pipe (16) and at the inside fixedly connected with distributor (15) of first section rectifying column (2).
4. The split energy-saving rectifying tower according to claim 1, characterized in that: the one end of back flow (3) and at inside fixedly connected with distributor (15) of first section rectifying column (2), the middle part fixedly connected with backwash pump (4) of back flow (3), the one end of conveyer pipe (5) and at inside fixedly connected with distributor (15) of second section rectifying column (6).
5. The split energy-saving rectifying tower according to claim 1, characterized in that: the equal fixed connection level gauge (14) of lower part lateral wall of first section rectifying column (2) and second section rectifying column (6), the lower part lateral wall of first section rectifying column (2) and second section rectifying column (6) just is in below fixedly connected with thermometer (13) of level gauge (14).
6. The split energy-saving rectifying tower according to claim 1, characterized in that: the upper end of the second section of the rectifying tower (6) is fixedly connected with a first pipe (9), and the other end of the first pipe (9) is fixedly connected with the upper end of a condenser (10).
7. The split energy-saving rectifying tower according to claim 1, characterized in that: and one side of the upper end of the condenser (10) is fixedly connected with a second pipe (11).
8. The split energy-saving rectifying tower according to claim 1, characterized in that: the lower extreme fixedly connected with discharging pipe (7) of condenser (10), the middle part fixedly connected with filter (8) of discharging pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110121273.1A CN112791437A (en) | 2021-01-28 | 2021-01-28 | Split type energy-saving rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110121273.1A CN112791437A (en) | 2021-01-28 | 2021-01-28 | Split type energy-saving rectifying tower |
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| Publication Number | Publication Date |
|---|---|
| CN112791437A true CN112791437A (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110121273.1A Pending CN112791437A (en) | 2021-01-28 | 2021-01-28 | Split type energy-saving rectifying tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531905A (en) * | 2022-06-10 | 2022-12-30 | 宁夏福瑞硅烷材料有限公司 | Novel dynamic control process for dividing wall rectifying tower |
-
2021
- 2021-01-28 CN CN202110121273.1A patent/CN112791437A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115531905A (en) * | 2022-06-10 | 2022-12-30 | 宁夏福瑞硅烷材料有限公司 | Novel dynamic control process for dividing wall rectifying tower |
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