CN209810185U - Solvent desorption device of refined regeneration base oil of silica gel - Google Patents
Solvent desorption device of refined regeneration base oil of silica gel Download PDFInfo
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- CN209810185U CN209810185U CN201920141500.5U CN201920141500U CN209810185U CN 209810185 U CN209810185 U CN 209810185U CN 201920141500 U CN201920141500 U CN 201920141500U CN 209810185 U CN209810185 U CN 209810185U
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Abstract
The utility model relates to a solvent desorption device of refined reclaimed base oil of silica gel, this solvent desorption device of refined reclaimed base oil of silica gel include reaction tower, gas circulation device and solvent circulating device the reaction tower is provided with a plurality of imports and exports, including transversely setting up solvent entry, silica gel entry and the gas outlet at reaction tower top in proper order, the side surface upper end of reaction tower is provided with the oil-out No. two, reaction tower bottom transversely sets gradually an oil-out, oil inlet and air inlet. The utility model discloses set up gas circulation device and solvent circulating device, make absorption back silica gel solvent refining many times in the reaction tower, the inside absorbent base oil of silica gel is got rid of to the at utmost, and soaking the nitrogen gas that successfully lets in the heating, the mixing stirring of being convenient for promotes blowing of silica gel to take off and deoiling, improves silica gel regeneration efficiency.
Description
Technical Field
The utility model belongs to the technical field of chemical industry equipment, concretely relates to solvent desorption device of refined regeneration base oil of silica gel.
Background
The regeneration of the II-type base oil by the traditional technology is completed by a hydrogenation process, and the method has the defects of poor safety and stability, high cost, large equipment investment and the like. The latest research shows that the regenerated II base oil can be obtained by adsorption and extraction of adsorbents such as silica gel and the like. In the method, the adsorbent is saturated after being used for a period of time, and cannot be adsorbed continuously. For this reason, desorption and deoiling treatment needs to be performed on the saturated adsorbent, but the conventional deoiling operation cannot perform relatively thorough removal on oil inside the adsorbent, and the regeneration efficiency of the adsorbent is not high. Therefore, the development of a device capable of effectively improving the regeneration and deoiling efficiency of the adsorbent, improving the purity of the regenerated adsorbent and reducing resource waste and environmental pollution has important economic, social and environmental protection values and practical significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a solvent desorption device and a process method for refining and regenerating base oil by silica gel, which have simple structure and reasonable design.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a solvent desorption device for silica gel refined regeneration base oil comprises a reaction tower, a gas circulation device and a solvent circulation device, wherein the reaction tower is provided with a plurality of inlets and outlets and comprises a solvent inlet, a silica gel inlet and a gas outlet which are sequentially and transversely arranged at the top of the reaction tower;
the gas circulation device comprises a gas storage tank arranged on one side of the reaction tower, a plurality of gas outlet ends and a plurality of gas inlet ends are arranged on the surface of the gas storage tank, the gas storage tank is sequentially connected with a Roots blower and motor hot gas arranged at one end of the gas storage tank through gas guide tubes, the Roots blower and an electric heater are respectively connected with the output end of a controller arranged outside the gas circulation device, and the other end of the electric heater is communicated with a gas inlet at the bottom end of the reaction tower through a guide tube;
the gas outlet at the top end of the reaction tower is sequentially connected with the inlet end of a condensing pipe and the inlet end of a separating device which are arranged on one side of the reaction tower through guide pipes, the surface of the separating device is provided with a plurality of outlet ends, and the separating device is communicated with the gas inlet end on the gas storage tank through the guide pipes;
the solvent circulating device comprises a coarse washing liquid box and a fine washing liquid box which are arranged on one side of the reaction tower, the coarse washing liquid box and the fine washing liquid box are respectively provided with a plurality of solvent outlet ends and solvent inlet ends, and the coarse washing liquid box and the fine washing liquid box are respectively communicated with each other through a guide pipe arranged at the outlet ends and are communicated with a first oil outlet at the bottom end of the reaction tower through the same guide pipe; and the outlet end of the fine washing liquid box is communicated with a solvent inlet at the top end of the reaction tower through a guide pipe.
By adopting the technical scheme, the adsorbed silica gel is subjected to solvent refining for multiple times in the reaction tower, the adsorbed base oil in the silica gel is removed to the maximum extent, heated nitrogen is successfully introduced after soaking, mixing and stirring are facilitated, stripping and deoiling of the silica gel are promoted, and the regeneration efficiency of the silica gel is improved.
As a further optimization scheme of the utility model, respectively be provided with a ooff valve on the pipe that coarse wash liquid case and fine wash liquid case communicate respectively.
By adopting the technical scheme, the control is convenient.
The beneficial effects of the utility model reside in that:
1) the utility model is provided with the gas circulation device and the solvent circulation device, so that the adsorbed silica gel is subjected to solvent refining for a plurality of times in the reaction tower, the adsorbed base oil in the silica gel is removed to the maximum extent, and the heated nitrogen is introduced successfully after soaking, thereby facilitating mixing and stirring, promoting the blowing-off and deoiling of the silica gel, and improving the regeneration efficiency of the silica gel;
2) the utility model utilizes the used fine cleaning solution again through the arranged solvent circulating device, thereby reducing the waste of resources and the pollution to the environment;
3) the utility model discloses simple structure, stability is high, reasonable in design, the realization of being convenient for.
Drawings
FIG. 1 is a schematic view of the overall process flow of the present invention;
fig. 2 is a schematic view of a partial structure of the present invention.
In the figure: 1. a reaction tower; 2. a gas storage tank; 3. a Roots blower; 4. an electric heater; 5. a condenser tube; 6. a separation device; 7. a coarse washing liquid box; 8. a fine washing liquid tank; 11. an air outlet; 12. a silica gel inlet; 13. a solvent inlet; 14. a second oil outlet; 15. an air inlet; 16. an oil inlet; 17. an oil outlet I; 71. a solvent outlet; 81. and (4) switching on and off the valve.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-2, a solvent desorption device of silica gel refined regeneration base oil, includes reaction tower 1, gas circulation device and solvent circulation device, reaction tower 1 is vertical to be set up in the fixed surface, reaction tower 1 is inside to be the cavity structure, reaction tower 1 is provided with a plurality of imports and exports, including transversely setting up solvent entry 13, silica gel entry 12 and the gas outlet 11 at reaction tower 1 top in proper order, the side surface upper end of reaction tower 1 is provided with No. two oil-outs 14, reaction tower 1 bottom transversely is provided with an oil-out 17, oil inlet 16 and air inlet 15 in proper order.
The gas circulation device comprises a gas storage tank 2 arranged on one side of the reaction tower 1, a plurality of gas outlet ends and a plurality of gas inlet ends are arranged on the surface of the gas storage tank 2, the gas storage tank 2 is sequentially connected with a Roots blower 3 and motor hot gas arranged at one end of the gas storage tank 2 through gas guide pipes, the Roots blower 3 and an electric heater 4 are respectively connected with an output end of a controller arranged outside the gas circulation device, and the other end of the electric heater 4 is communicated with a gas inlet 15 at the bottom end of the reaction tower 1 through a guide pipe so as to convey high-temperature gas into the reaction tower 1.
The gas outlet 11 on the top end of the reaction tower 1 is sequentially connected with the inlet end of a condensation pipe 5 and the inlet end of a separating device 6 which are arranged on one side of the reaction tower 1 through guide pipes, a plurality of outlet ends are arranged on the surface of the separating device 6, and the separating device 6 is communicated with the gas inlet end on the gas storage tank 2 through the guide pipes so as to achieve closed-loop circulation of gas in the reaction tower 1 and the gas circulating device.
The solvent circulating device comprises a coarse washing liquid box 7 and a fine washing liquid box 8 which are arranged on one side of the reaction tower 1, the coarse washing liquid box 7 and the fine washing liquid box 8 are both provided with a plurality of solvent outlet 71 ends and solvent inlet ends, the coarse washing liquid box 7 and the fine washing liquid box 8 are communicated with each other through a conduit arranged at the outlet ends respectively and are communicated with a first oil outlet 17 at the bottom end of the reaction tower 1 through a conduit so as to collect the cleaned solvent; the outlet end of the fine washing liquid box 8 is communicated with a solvent inlet 13 at the top end of the reaction tower 1 through a conduit, so that the cyclic utilization of partial solvent is realized.
And the guide pipes communicated with the coarse washing liquid box 7 and the fine washing liquid box 8 are respectively provided with a switch valve 81, so that the control is convenient.
A process method of the solvent desorption device for refining and regenerating the base oil by the silica gel comprises the following steps:
s1: adsorption-followed silica gel stripping deoiling
After silica gel is adsorbed and saturated, evacuating internal base oil, starting a Roots blower 3 and an electric heater 4, blowing high-temperature nitrogen into the reaction tower 1, blowing off the internal silica gel, starting a condenser pipe 5, enabling the blown-off gas to enter a separation device 6 through the condenser pipe 5 from an air outlet 11, separating gas and oil, enabling the separated nitrogen to enter a gas storage tank 2 again, and circularly blowing off the silica gel in the reaction tower 1;
s2: coarse elution of oil with silica gel after stripping
Injecting an NMP (methyl pyrrolidone) solvent into the reaction tower 1 filled with the stripped silica gel, soaking for 1-2h, continuously blowing high-temperature nitrogen into the reaction tower 1, stirring the liquid in the reaction tower 1 to promote the desorption of the silica gel, and discharging a crude washing liquid in a crude washing liquid box 7 for next treatment after the completion;
s3: fine washing with silica gel
Injecting an NMP solvent into the reaction tower 1 after the crude oil is eluted, carrying out fine oil elution on the silica gel for 0.5-1h, continuously blowing nitrogen during the period to promote the silica gel to be fully deoiled and regenerated, emptying a fine washing liquid after the completion of the fine oil elution, and storing the fine washing liquid in a fine washing liquid box 8;
s4: drying and regeneration
Introducing high-temperature nitrogen into the reaction tower 1, keeping the pressure in the reaction tower 1 at 1-1.2 times of atmospheric pressure, heating, blowing off and drying the silica gel, and keeping introducing nitrogen for 1h at the temperature of 180 ℃ to finally obtain the regenerated silica gel.
The fine washing solution collected in step S3 is introduced into the reaction column 1 from the fine washing solution tank 8 in the next regeneration operation of the silica gel after adsorption, and is used as a crude washing solvent.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (2)
1. The utility model provides a solvent desorption device of refined regeneration base oil of silica gel which characterized in that: the reaction tower (1) is provided with a plurality of inlets and outlets, and comprises a solvent inlet (13), a silica gel inlet (12) and a gas outlet (11) which are sequentially and transversely arranged at the top of the reaction tower (1), wherein a second oil outlet (14) is arranged at the upper end of the side surface of the reaction tower (1), and a first oil outlet (17), an oil inlet (16) and a gas inlet (15) are sequentially and transversely arranged at the bottom end of the reaction tower (1);
the gas circulation device comprises a gas storage tank (2) arranged on one side of the reaction tower (1), a plurality of gas outlet ends and a plurality of gas inlet ends are arranged on the surface of the gas storage tank (2), the gas storage tank (2) is sequentially connected with a Roots blower (3) and motor hot gas which are arranged at one end of the gas storage tank (2) through gas guide pipes, the Roots blower (3) and an electric heater (4) are respectively connected with the output end of a controller arranged outside the gas circulation device, and the other end of the electric heater (4) is communicated with a gas inlet (15) at the bottom end of the reaction tower (1) through a guide pipe;
a gas outlet (11) at the top end of the reaction tower (1) is sequentially connected with an inlet end of a condensing pipe (5) and an inlet end of a separating device (6) which are arranged on one side of the reaction tower (1) through a guide pipe, a plurality of outlet ends are arranged on the surface of the separating device (6), and the separating device (6) is communicated with a gas inlet end on the gas storage tank (2) through the guide pipe;
the solvent circulating device comprises a coarse washing liquid box (7) and a fine washing liquid box (8) which are arranged on one side of the reaction tower (1), the coarse washing liquid box (7) and the fine washing liquid box (8) are respectively provided with a plurality of solvent outlet (71) ends and solvent inlet ends, the coarse washing liquid box (7) and the fine washing liquid box (8) are communicated with each other through a conduit arranged at an outlet end and are communicated with a first oil outlet (17) at the bottom end of the reaction tower (1) through the same conduit; the outlet end of the fine washing liquid box (8) is communicated with a solvent inlet (13) at the top end of the reaction tower (1) through a conduit.
2. The solvent desorption device for silica gel refining and regenerating base oil according to claim 1, which is characterized in that: and a switch valve (81) is respectively arranged on the guide pipe respectively communicated with the coarse washing liquid box (7) and the fine washing liquid box (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920141500.5U CN209810185U (en) | 2019-01-25 | 2019-01-25 | Solvent desorption device of refined regeneration base oil of silica gel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920141500.5U CN209810185U (en) | 2019-01-25 | 2019-01-25 | Solvent desorption device of refined regeneration base oil of silica gel |
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| CN209810185U true CN209810185U (en) | 2019-12-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701507A (en) * | 2019-01-25 | 2019-05-03 | 安徽国孚凤凰科技有限公司 | A kind of the solvent desorbing device and process of silica gel purification Reclaimed Base Oil |
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2019
- 2019-01-25 CN CN201920141500.5U patent/CN209810185U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109701507A (en) * | 2019-01-25 | 2019-05-03 | 安徽国孚凤凰科技有限公司 | A kind of the solvent desorbing device and process of silica gel purification Reclaimed Base Oil |
| CN109701507B (en) * | 2019-01-25 | 2023-12-26 | 安徽国孚凤凰科技有限公司 | Solvent desorption device and process method for refining and regenerating base oil by using silica gel |
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