CN111871005A - Separation device for sulfolane and heat conduction oil - Google Patents
Separation device for sulfolane and heat conduction oil Download PDFInfo
- Publication number
- CN111871005A CN111871005A CN202010677041.XA CN202010677041A CN111871005A CN 111871005 A CN111871005 A CN 111871005A CN 202010677041 A CN202010677041 A CN 202010677041A CN 111871005 A CN111871005 A CN 111871005A
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- sulfolane
- barrel body
- liquid level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/12—Auxiliary equipment particularly adapted for use with liquid-separating apparatus, e.g. control circuits
Abstract
The invention relates to the technical field of chemical industry, and discloses a separation device for sulfolane and heat conduction oil, which comprises a barrel body (1) and a partition plate (15) arranged in the barrel body (1), wherein the partition plate (15) extends upwards from the bottom wall of the barrel body (1) to define a first cavity and a second cavity in the barrel body, a gap is formed between the partition plate (15) and the top wall of the barrel body, so that the first cavity and the second cavity can only be communicated through the gap in a fluid mode, a mixed liquid inlet pipe (3), a sulfolane outlet pipe (9) and a heat conduction oil outlet pipe (10) are arranged on the barrel body (1), the mixed liquid inlet pipe (3) and the sulfolane outlet pipe (9) are communicated with the first cavity in a fluid mode, and the heat conduction oil outlet pipe (10) is communicated. The utility model provides a separator of sulfolane and conduction oil can separate sulfolane and conduction oil for sulfolane and conduction oil can be by reuse, make the production of system more energy-conserving, have reduced manufacturing cost.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a separation device for sulfolane and heat conduction oil.
Background
Sulfolane is used as an extracting agent in the chemical industry, and a heat conduction oil furnace is used as a heating medium to be widely applied, in particular to the benzene hydrogenation industry. Because sulfolane can take place to decompose in long-term operation process, generate butane and sulfur dioxide, sulfur dioxide dissolves in the sulfolane solution and makes the sulfolane solution present acidity, causes the corruption to equipment, and the normal service life according to investigating benzene hydrogenation trade heat exchanger is generally 8-14 months, so heat-conducting oil and sulfolane take place when mixing, and heat-conducting oil and sulfolane nature are different completely, if can not obtain effective separation, will influence system normal production, bring economic influence. Therefore, there is a need to provide a technical solution capable of effectively separating sulfolane from heat transfer oil.
Disclosure of Invention
The invention aims to solve the problem that sulfolane and heat conduction oil cannot be effectively separated in the prior art, and provides a separation device for sulfolane and heat conduction oil.
In order to achieve the above objects, an aspect of the present invention provides a separation device of sulfolane and thermal oil, the separation device including a tub and a partition plate disposed in the tub, the partition plate extending upward from a bottom wall of the tub to define a first chamber and a second chamber in the tub, and a gap being provided between the partition plate and a top wall of the tub such that the first chamber and the second chamber can be in fluid communication only through the gap, the tub being provided with a mixed liquid inlet pipe, a sulfolane outlet pipe, and a thermal oil outlet pipe, the mixed liquid inlet pipe and the sulfolane outlet pipe being in fluid communication with the first chamber, and the thermal oil outlet pipe being in fluid communication with the second chamber.
Optionally, a water replenishing pipe for replenishing water is connected to the barrel body.
Optionally, the barrel body is connected with an air duct for introducing air, and the top of the barrel body is provided with an exhaust pipe.
Optionally, the air duct penetrates through the wall of the barrel body and extends into the barrel body, and the position of the air duct is lower than the position of the mixed liquid inlet pipe.
Optionally, the water replenishing pipe is connected to a part of the air duct outside the barrel body.
Optionally, a plurality of buffer plates are arranged in the first chamber in sequence in the vertical direction, one of the two adjacent buffer plates extends from the inner wall of the barrel body to the partition plate and has a space with the partition plate, the other extends from the partition plate to the inner wall of the barrel body and has a space with the inner wall of the barrel body,
the heights of the mixed liquid inlet pipe and the sulfolane outlet pipe are lower than the height of the lowest buffer plate.
Optionally, a negative pressure connecting pipe for connecting a negative pressure generator is arranged at the top of the barrel body.
Optionally, a liquid level monitoring piece for monitoring the liquid level height in the barrel body is arranged on the barrel body.
Optionally, the partition is disposed in a vertical direction.
Optionally, the liquid level monitoring part includes a first connector type liquid level part for monitoring the liquid level of the first chamber and a second connector type liquid level part for detecting the second chamber, the first connector type liquid level part includes a first upper liquid level meter connected to the first chamber and a first lower liquid level meter located below the first upper liquid level meter, the second connector type liquid level part includes a second upper liquid level meter connected to the second chamber and a second lower liquid level meter located below the second upper liquid level meter, the first upper liquid level meter flushes with the second upper liquid level meter, the first lower liquid level meter flushes with the second lower liquid level meter, and the highest position of the partition plate is higher than the heights of the first upper liquid level meter and the second upper liquid level meter.
By the technical scheme, the mixed solution of sulfolane and heat conducting oil is introduced into the barrel body through the mixed solution inlet pipe, the mixed solution is accumulated in the first chamber, and the liquid level will gradually rise with the continuous introduction of the mixed solution, the sulfolane and the heat conducting oil will generate liquid stratification, the sulfolane is below, the heat conducting oil is above, the liquid level will be higher than the height of the clapboard with the gradual rise of the liquid level, thereby the heat conducting oil above the first chamber passes through the partition plate and falls into the second chamber, and finally the heat conducting oil in the first chamber completely passes through the partition plate and enters the second chamber along with the further rise of the liquid level of the first chamber, and the level of the sulfolane in the first chamber is basically flush with the partition plate, and then a sulfolane outlet pipe and a heat conducting oil outlet pipe are opened, so that the sulfolane flows out from the first chamber through the sulfolane outlet pipe and is collected, and the conduction oil flows out from the second chamber through the conduction oil outlet pipe and is collected. The utility model provides a separator of sulfolane and conduction oil can high-efficient separation sulfolane and conduction oil, can accomplish sulfolane and conduction oil reuse, accomplishes that production system is more energy-conserving, finally reaches reduction in production cost's purpose.
Drawings
Fig. 1 is a schematic view of a separation apparatus of sulfolane and thermal conductive oil according to a preferred embodiment of the present invention.
Description of the reference numerals
1-barrel 2-first lower liquid level meter 3-mixed liquid inlet pipe 4-gas guide pipe 5-water replenishing pipe 6-gas guide water replenishing main valve 7-guide shower valve 8-second lower liquid level meter 9-sulfolane outlet pipe 10-heat conducting oil outlet pipe 11-second upper liquid level meter 12-exhaust pipe 13-negative pressure connecting pipe 14-first upper liquid level meter 15-baffle plate 16-buffer plate 17-gas guide valve
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the present application provides a separation device for sulfolane and thermal oil, the separation device comprising a tub body 1 and a partition plate 15 disposed in the tub body 1, wherein the partition plate 15 extends upward from a bottom wall of the tub body 1 to define a first chamber and a second chamber in the tub body 1, and a gap is formed between the partition plate 15 and a top wall of the tub body 1, such that the first chamber and the second chamber can only be in fluid communication through the gap, a mixed liquid inlet pipe 3, a sulfolane outlet pipe 9 and a thermal oil outlet pipe 10 are disposed on the tub body 1, the mixed liquid inlet pipe 3 and the sulfolane outlet pipe 9 are in fluid communication with the first chamber, and the thermal oil outlet pipe 10 is in fluid communication with the second chamber.
Leading a mixed solution of sulfolane and heat conducting oil into the barrel body 1 through the mixed solution inlet pipe 3, accumulating the mixed solution into a first cavity, namely a cavity on the left side of the partition plate 15 in figure 1, leading the mixed solution to be continuously led in, gradually increasing the liquid level, leading the sulfolane and the heat conducting oil to generate a liquid stratification phenomenon, leading the sulfolane to be below, leading the heat conducting oil to be above, leading the liquid level to be higher than the height of the partition plate 15 along with the gradual increase of the liquid level, leading the heat conducting oil above to cross the partition plate 15 and fall into a second cavity, namely a cavity on the right side of the partition plate 15 in figure 1, leading the heat conducting oil in the first cavity to finally exceed the partition plate 15 and enter the second cavity along with the further increase of the liquid level of the first cavity, leading the liquid level of the sulfolane in the first cavity to be basically level with the partition plate 15, and opening the, so that sulfolane flows out and is collected from the first chamber via the sulfolane outlet pipe 9 and the conduction oil flows out and is collected from the second chamber via the conduction oil outlet pipe 10. The utility model provides a separator of sulfolane and conduction oil can separate sulfolane and conduction oil for sulfolane and conduction oil can be by reuse, make the production of system more energy-conserving, have reduced manufacturing cost.
In the embodiment shown in fig. 1, only valves are arranged on the mixed liquid inlet pipe 3, the sulfolane outlet pipe 9 and the heat transfer oil outlet pipe 10, and when the mixed solution is introduced, the valve on the mixed liquid inlet pipe 3 is opened, and the valves on the sulfolane outlet pipe 9 and the heat transfer oil outlet pipe 10 are closed; and when the separated solution is discharged outwards, the valve on the mixed liquid inlet pipe 3 is opened, and the valves of the sulfolane outlet pipe 9 and the heat conduction oil outlet pipe 10 are closed. In addition, the partition 15 preferably extends vertically upward from the bottom wall of the tub 1.
This application can insert in the system of crude benzene deep-processing system benzene, will mix the extraction tower that liquid outlet pipe 3 is direct and in the system and be connected to collect the mixed liquid of extraction tower exhaust sulfolane and conduction oil when the system operation, realize the separation of conduction oil and sulfolane under the condition of system production continuous operation, not only reduce the loss of sulfolane and conduction oil, reduced unplanned shut down number of times moreover.
This application still provides the moisturizing pipe to the mixed solution makeup water, utilizes water as the auxiliary agent, to the mixed solution of sulfolane and conduction oil in the makeup water, can make the layering effect of sulfolane and conduction oil better. In addition, gas can be introduced into the mixed solution, so that bubbles are generated inside the mixed solution, and by means of the characteristics of different viscosity coefficients of sulfolane and heat transfer oil, the heat transfer oil below the mixed solution can be rapidly moved to the upper part of the mixed solution. Among them, it is preferable to introduce an inert gas so as to prevent a reaction between the gas and the mixed solution, and it is more preferable to use nitrogen gas.
As shown in fig. 1, the air duct 4 has been run through to the below of staving 1, nitrogen gas supply source is connected to air duct 4, thereby let in nitrogen gas the lower part of mixed solution, be connected with moisturizing pipe 5 on the air duct 4, be provided with the valve on the moisturizing pipe, be provided with air guide moisturizing main valve 6 on the part of the low reaches of moisturizing pipe 5 of air duct 4, and the part that is located air guide moisturizing main valve 6 upper reaches at air duct 4 is provided with air guide valve 17, can be according to the switching of each valve of demand control, thereby reach and supply water alone to mixed solution, let in nitrogen gas alone or the mesh that nitrogen gas was let in to the moisturizing simultaneously.
In addition, a spray guide pipe communicated with the second cavity is arranged on the barrel body 1, a spray guide valve 7 is arranged on the spray guide pipe, a sulfolane outlet pipe 9 provided by the application is connected to a sulfolane collector, a heat conduction oil outlet pipe 10 is connected to a heat conduction oil underground groove, when sulfolane overflows into the second cavity due to misoperation, equipment failure or other conditions, the sulfolane cannot be discharged through the heat conduction oil outlet pipe 10, and the spray guide valve 7 can be opened to discharge the sulfolane through the spray guide pipe; on the other hand, when equipment is stopped using for a long time or overhauled, can discharge the material recycle in the staving through leading the shower pipe, except above-mentioned circumstances, lead shower valve 7 and generally keep closed state.
When the mixed liquid of sulfolane and heat conducting oil enters the first chamber from the mixed liquid inlet pipe 3, the mixed liquid can surge to a large extent, so that the layering of the sulfolane and the heat conducting oil is not facilitated, in order to promote the layering of the sulfolane and the heat conducting oil, in a preferred embodiment of the present application, a plurality of buffer plates 16 are arranged in the first chamber in sequence in the vertical direction, one of the two adjacent buffer plates 16 extends from the inner wall of the barrel body 1 to the partition plate 15 with a space therebetween, the other extends from the partition plate 15 to the inner wall of the barrel body 1 with a space therebetween, and the inlet pipe 3 and the sulfolane outlet pipe 9 are located at a height lower than the height of the lowest buffer plate 16.
As shown in FIG. 1, 3 horizontally extending buffer plates 16 are arranged in the first chamber, wherein two buffer plates 16 are arranged on the inner wall of the barrel body 1 and extend towards the direction of the partition plate 15, one buffer plate 16 is arranged on the partition plate 15 and extends towards the direction of the inner wall of the barrel body 1, the rising time of the solution is prolonged through the 3 buffer plates 16 which are arranged in a staggered mode, the surging of the mixed solution is weakened, and therefore the solution can be layered better. In addition, in order to ensure that each buffer plate 16 can bear the impact of liquid, as shown in fig. 1, 3 buffer plates 16 are connected by vertical connecting pieces, and the connecting pieces can improve the impact strength of the buffer plates 16 and do not affect the rising of the solution.
In the embodiment shown in fig. 1, the partition extends in the vertical direction, and the partition extends to a position 70% of the height of the barrel, that is, the height of the partition is equal to 70% of the height of the barrel, and in addition, in order to monitor the liquid level height of the barrel 1, a liquid level monitoring part for monitoring the liquid level height in the barrel is arranged on the barrel, and the liquid level monitoring part can be a buoyancy type liquid level meter, a capacitance type liquid level meter, a connector type liquid level meter and the like.
In the embodiment of fig. 1, a connector type level gauge is used, a first connector type level gauge and a second connector type level gauge are respectively provided on both sides of the tank body 1, the first connector type level gauge includes a first upper level gauge 14 and a first lower level gauge 2 provided on the first chamber side, and the second connector type level gauge includes a second upper level gauge 11 and a second lower level gauge 8 provided on the second chamber side. In addition, the partition 15 is disposed in the vertical direction, and the highest height of the partition 15 is higher than the heights of the first upper level gauge 14 and the second upper level gauge 11, preferably the height of the partition 15 is slightly higher than the heights of the first upper level gauge 14 and the second upper level gauge 11, so that the indication of the level gauges reaches 100% when the height of the liquid is substantially level with the partition 15.
The following describes a specific method of using the separation device provided in the present application. Firstly, the valve on the mixed liquid outlet pipe 3 and the valve on the negative pressure connecting pipe 13 for connecting the negative pressure pipeline are opened, and all other valves are closed, so that the mixed liquid of sulfolane and heat conducting oil is introduced into the first chamber, when the liquid level displayed by the first communicating vessel type liquid level meter reaches 70%, the valve on the mixed liquid outlet pipe 3 and the valve on the negative pressure connecting pipe 13 are closed, and at the moment, the liquid level of the mixed liquid does not exceed the height of the partition plate 15.
And then opening the air guide and water supplement main valve 6 and the valves on the water supplement pipe 5, and closing the air guide valve 17, so as to introduce water into the first cavity, stopping water injection when the ratio of supplemented water to water in the mixed liquid reaches 8%, closing the valves on the water supplement pipe 5, simultaneously opening the air guide valve 17, and introducing nitrogen into the mixed liquid for a period of time, such as 10 minutes, so as to promote the layering between the heat conduction oil and the sulfolane, and make the heat conduction oil flow above the mixed liquid. Wherein the exhaust pipe 12 should be opened when injecting nitrogen gas, thereby facilitating the discharge of nitrogen gas.
And after nitrogen is introduced for a period of time, closing the air guide water replenishing main valve 6 and the air guide valve 17, opening the sulfolane outlet pipe 9, discharging and collecting sulfolane until the oil-water separation boundary position in the first chamber reaches 20%, and closing the sulfolane outlet pipe 9.
Then open the mixed liquid that the valve on mixed liquid import pipe 3 supplyed sulfolane and conduction oil in to first cavity, it is to 70% to mend to the oil-water separation interface position in the first cavity, then close the valve on mixed liquid import pipe 3, continue to mend water and mend nitrogen according to above-mentioned step, the liquid level height of mixed liquid this moment exceeds the height of baffle 15, the conduction oil at liquid top overflows to the baffle opposite side in the second cavity promptly through the baffle, the operation of moisturizing and mending nitrogen is carried out repeatedly, observe the registration of second intercommunication ware formula level gauge, until registration 70%, open No. 10 heat conduction oil valve, arrange the conduction oil to the conduction oil underground tank.
The separation of the heat conduction oil and the sulfolane is completed through the steps, so that the sulfolane and the heat conduction oil can be repeatedly utilized, the production of the system is more energy-saving, and the production cost is reduced. And the system can be connected into a system for producing benzene by deep processing of crude benzene, so that the separation of heat conduction oil and sulfolane is realized under the condition of continuous operation of system production, the loss of the sulfolane and the heat conduction oil is reduced, and the unplanned shutdown times are reduced.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including each of the specific features, are combined in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A separation device of sulfolane and thermal oil, characterized in that the separation device comprises a barrel body (1) and a partition plate (15) arranged in the barrel body (1), the partition plate (15) extends upwards from the bottom wall of the barrel body (1) to define a first chamber and a second chamber in the barrel body (1), and a gap is arranged between the partition plate (15) and the top wall of the barrel body (1) so that the first chamber and the second chamber can only be in fluid communication through the gap,
the barrel body (1) is provided with a mixed liquid inlet pipe (3), a sulfolane outlet pipe (9) and a heat conduction oil outlet pipe (10), the mixed liquid inlet pipe (3) and the sulfolane outlet pipe (9) are communicated with the first cavity in a fluid mode, and the heat conduction oil outlet pipe (10) is communicated with the second cavity in a fluid mode.
2. The sulfolane and conduction oil separation device according to claim 1, characterized in that a water replenishing pipe (5) for replenishing water is connected to the barrel body (1).
3. The sulfolane and heat conducting oil separating device according to claim 2, characterized in that the barrel body (1) is connected with a gas guide pipe (4) for introducing gas, and the top of the barrel body (1) is provided with a gas exhaust pipe (12).
4. The sulfolane and heat conducting oil separating device according to claim 3, characterized in that the gas guide tube (4) penetrates through the wall of the barrel body (1) and extends into the barrel body (1), and the gas guide tube (4) is positioned at a position lower than that of the mixed liquid inlet tube (3).
5. The sulfolane and thermal oil separation device according to claim 4, wherein the water replenishing pipe (5) is connected to a portion of the gas guide pipe (4) located outside the barrel body (1).
6. The sulfolane and thermal oil separation device according to claim 1, wherein a plurality of buffer plates (16) are arranged in the first chamber in sequence in the vertical direction, one of two adjacent buffer plates (16) extends from the inner wall of the barrel body (1) to the partition plate (15) with a space therebetween and the other extends from the partition plate (15) to the inner wall of the barrel body (1) with a space therebetween,
the height of the mixed liquid inlet pipe (3) and the sulfolane outlet pipe (9) is lower than that of the lowest buffer plate (16).
7. The sulfolane and thermal oil separation device according to claim 1, characterized in that the top of the barrel (1) is provided with a negative pressure connection pipe (13) for connecting a negative pressure generator.
8. A sulfolane and thermal oil separation device according to any one of claims 1 to 7, characterized in that the tank body (1) is provided with a liquid level monitoring member for monitoring the liquid level in the tank body (1).
9. A device for separating sulfolane from thermal oil according to claim 8, characterized in that said partitions (15) are arranged in a vertical direction.
10. The sulfolane and thermal oil separation device according to claim 9, wherein the liquid level monitoring member includes a first communicating vessel type liquid level member for monitoring a liquid level of the first chamber and a second communicating vessel type liquid level member for detecting the second chamber,
the first-connector-type level member includes a first upper level gauge (14) connecting the first chamber and a first lower level gauge (2) located below the first upper level gauge (14),
the second-connector-type liquid level piece comprises a second upper liquid level meter (11) connected with the second chamber and a second lower liquid level meter (8) positioned below the second upper liquid level meter (11),
the first upper gauge (14) and the second upper gauge (11) are flush, the first lower gauge (2) and the second lower gauge (8) are flush,
the height of the highest position of the partition plate (15) is higher than the heights of the first upper liquid level meter (14) and the second upper liquid level meter (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677041.XA CN111871005B (en) | 2020-07-14 | 2020-07-14 | Separation device for sulfolane and heat conduction oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677041.XA CN111871005B (en) | 2020-07-14 | 2020-07-14 | Separation device for sulfolane and heat conduction oil |
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| Publication Number | Publication Date |
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| CN111871005A true CN111871005A (en) | 2020-11-03 |
| CN111871005B CN111871005B (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010677041.XA Active CN111871005B (en) | 2020-07-14 | 2020-07-14 | Separation device for sulfolane and heat conduction oil |
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| CN107684741A (en) * | 2017-10-18 | 2018-02-13 | 江苏瑞德斯环保科技有限公司 | A kind of Liquid liquid Separation device and the equipment with the separator |
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| WO2010039083A1 (en) * | 2008-10-02 | 2010-04-08 | Lee Hyosong M | Device for separation of a lighter liquid phase from a heavier processing liquid, a plant for cleaning a recirculating processing liquid by means of the separation device, and a method for separating a lighter liquid phase from a heavier processing liquid phase |
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| CN111871005B (en) | 2022-03-01 |
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Address after: 016030 xilaifeng Industrial Park, Hainan District, Wuhai City, Inner Mongolia Autonomous Region Patentee after: National Energy Group Coal Coking Co.,Ltd. Patentee after: Guoneng Mengxi Coal Chemical Co.,Ltd. Patentee after: Guoneng Mengxi Huarui Chemical Co.,Ltd. Address before: 016030 xilaifeng Industrial Park, Hainan District, Wuhai City, Inner Mongolia Autonomous Region Patentee before: National Energy Group Coal Coking Co.,Ltd. Patentee before: Shenhua Mengxi Coal Chemical Co.,Ltd. Patentee before: Shenhua Mengxi Huarui Chemical Co.,Ltd. |
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