CN115121034B - Pretreatment device for recycling salicylonitrile solvent and treatment method thereof - Google Patents
Pretreatment device for recycling salicylonitrile solvent and treatment method thereof Download PDFInfo
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- CN115121034B CN115121034B CN202210687354.2A CN202210687354A CN115121034B CN 115121034 B CN115121034 B CN 115121034B CN 202210687354 A CN202210687354 A CN 202210687354A CN 115121034 B CN115121034 B CN 115121034B
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- CHZCERSEMVWNHL-UHFFFAOYSA-N 2-hydroxybenzonitrile Chemical compound OC1=CC=CC=C1C#N CHZCERSEMVWNHL-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 239000002904 solvent Substances 0.000 title claims abstract description 126
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004064 recycling Methods 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000002425 crystallisation Methods 0.000 claims description 35
- 230000008025 crystallization Effects 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 230000003197 catalytic effect Effects 0.000 claims description 24
- 238000004321 preservation Methods 0.000 claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 description 25
- 230000008020 evaporation Effects 0.000 description 24
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000003054 catalyst Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 150000002825 nitriles Chemical class 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0018—Evaporation of components of the mixture to be separated
- B01D9/0031—Evaporation of components of the mixture to be separated by heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a pretreatment device for recycling a salicylonitrile solvent and a treatment method thereof, comprising a cooling bracket, wherein the cooling bracket is arranged at one side of the lower end of the inner part of the main body bracket, and the main body bracket is fixedly connected with the cooling bracket.
Description
Technical Field
The invention relates to the technical field of salicylic nitrile solvent pretreatment, in particular to a pretreatment device for salicylic nitrile solvent recovery and a treatment method thereof.
Background
Salicylonitrile refers generally to o-hydroxybenzonitrile, which is a chemical of the formula C 7 H 5 NO, salicylonitrile is an off-white to light brown powder at normal temperature, density: 1.1052g/cm 3 (99.6C) melting point: between ninety-two and ninety-five degrees celsius, the boiling point is one hundred forty-nine degrees celsius;
however, the existing salicylonitrile solvent has lower efficiency when evaporating and crystallizing to recycle the salicylonitrile, and seriously affects the production efficiency of the salicylonitrile; therefore, the existing requirements are not met, and a pretreatment device for recycling the salicylnitrile solvent and a treatment method thereof are provided.
Disclosure of Invention
The invention aims to provide a pretreatment device and a treatment method for recycling a salicylonitrile solvent, which are used for solving the problems that the efficiency of the salicylonitrile solvent is low and the production efficiency of the salicylonitrile is seriously influenced when the salicylonitrile solvent is evaporated and crystallized to recycle the salicylonitrile in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: a pretreatment device for recycling a salicylonitrile solvent comprises a main body bracket;
the cooling support is arranged on one side of the lower end of the inner part of the main body support, the main body support is fixedly connected with the cooling support, a water chiller is arranged at the lower end of the inner part of the cooling support, the water chiller is fixedly connected with the cooling support, a heat exchange tube is arranged at the upper end of the water chiller, one end of the heat exchange tube is connected with a water outlet of the water chiller, and the other end of the heat exchange tube is connected with a water inlet of the water chiller;
the conveying pump is arranged on one side of the cooling support, the cooling support is fixedly connected with the conveying pump, a flowing pipeline is arranged at the output end of the conveying pump, the flowing pipeline is fixedly connected with the conveying pump, a rotating support is arranged in the flowing pipeline and is rotatably connected with the flowing pipeline, a turbulence spoon is arranged outside the rotating support and is fixedly connected with the rotating support, a filtering basket is arranged at the lower end of one side of the cooling support, and the filtering basket is connected with the cooling support through a clamping groove;
the heat preservation support, it sets up the outside of flowing through the pipeline, flow through pipeline and heat preservation support fixed connection, the heat preservation is installed to the inboard of heat preservation support, heat preservation and heat preservation support fixed connection, the internally mounted of heat preservation support has the heating pipe, heating pipe and flow through pipeline fixed connection.
Preferably, the front end of the flowing through pipeline is provided with a driving gear, the driving gear is fixedly connected with a rotating bracket, a driving chain is arranged outside the driving gear, one side, close to the conveying pump, of the front end face of the flowing through pipeline is provided with a mounting bracket, and the mounting bracket is fixedly connected with the flowing through pipeline.
Preferably, a catalytic regulator box is mounted on one side of the main body support, and the catalytic regulator box is fixedly connected with the main body support.
Preferably, an adding pump is installed on one side of the main body support, the adding pump is fixedly connected with the main body support, an adding pipeline is installed at the output end of the adding pump, the adding pipeline is fixedly connected with the adding pump, and the adding pipeline is fixedly connected with the flowing pipeline.
Preferably, flow control electromagnetic valves are arranged outside the flow-through pipeline and the adding pipeline.
Preferably, the front end of the mounting bracket is provided with a driving motor, the driving motor is fixedly connected with the mounting bracket, and the driving motor is connected with the driving gear through a coupling.
Preferably, a feeding pipeline is installed at the lower end of one side of the main body support, and the feeding pipeline is fixedly connected with the main body support.
A method of treating a pretreatment device for recovery of a salicylnitrile solvent, comprising the steps of:
step one: the method comprises the steps that a worker adds a salicylonitrile solvent into a cooling bracket through a feeding pipeline, a cold water machine exchanges heat between a refrigeration medium and the salicylonitrile solvent through a heat exchange pipe, so that the temperature of the salicylonitrile solvent is reduced, the solubility of the salicylonitrile solvent is reduced, and the salicylonitrile is separated out;
step two: the salicylonitrile solvent is discharged into a filter basket, the filter basket filters the salicylonitrile separated out from the salicylonitrile solvent, and then a delivery pump introduces the salicylonitrile solvent into the interior of a pipeline;
step three: the driving motor is powered to drive the driving gear and the driving chain to rotate, so that the rotating bracket is driven to rotate, the turbulent flow spoon is used for turbulent flow of the salicylonitrile solvent in the flowing pipeline, at the moment, the pump is added to electrically add the catalytic regulator in the catalytic regulator box into the flowing pipeline, and the turbulent flow spoon is used for mixing the catalytic regulator with the salicylonitrile solvent;
step four: heating the pipe to obtain electricity, heating the flowing pipe to raise the temperature of the salicyl nitrile solvent flowing through the pipe, and preheating the salicyl nitrile solvent;
step five: the high-temperature salicylnitrile solvent discharging device is characterized in that a worker collects the salicylnitrile solvent and performs evaporative crystallization operation on the salicylnitrile solvent by using an evaporative crystallization kettle.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the cold water machine is arranged to perform heat exchange with the salicylonitrile solvent through the heat exchange pipe, so that the solubility of the salicylonitrile solvent is reduced, the salicylonitrile concentration of the salicylonitrile solvent is reduced, the salicylonitrile solvent is convenient to be subjected to chemical regulation in the follow-up process, the evaporation and crystallization amount of the salicylonitrile solvent is reduced, a thick layer of crystals are formed on the inner wall of the evaporation and crystallization kettle when the salicylonitrile solvent is evaporated and crystallized, the heat conducting property of the evaporation and crystallization kettle is prevented from being influenced, the crystallization of the follow-up salicylonitrile is further influenced, the efficiency of the salicylonitrile solvent in evaporation and crystallization is improved, the production efficiency of the salicylonitrile is improved, the rotating bracket is arranged to be matched with the turbulent flow spoon to enable the catalyst to be fully mixed with the salicylonitrile solvent, meanwhile, the turbulent flow of the salicylonitrile solvent is accelerated, the use effect of the device is enhanced, the heating pipe is arranged to heat the salicylonitrile solvent in advance, the temperature of the salicylonitrile solvent is increased, the salicylonitrile solvent is enabled to be evaporated more rapidly when the salicylonitrile solvent enters the evaporation and crystallization kettle, the time of the evaporation and crystallization kettle is shortened, and the salicylonitrile is enabled to be crystallized more rapidly;
2. the invention can play a linkage role by installing the driving chain, ensure the functional integrity of the device, and can conveniently add the catalytic regulator into the salicylnitrile solvent by installing the catalytic regulator box, thereby regulating the salicylnitrile solvent and enhancing the use effect of the device.
Drawings
FIG. 1 is a schematic diagram of a pretreatment device for recovering a salicylnitrile solvent;
FIG. 2 is a front view of a pretreatment device for recovering a salicylnitrile solvent according to the present invention;
FIG. 3 is an enlarged view of part A of the present invention;
FIG. 4 is a diagram showing the connection relationship between a rotating bracket and a flow-through pipe and a turbulence spoon according to the present invention;
fig. 5 is an enlarged view of part B of the present invention.
In the figure: 1. a main body bracket; 2. a catalytic regulator tank; 3. adding a pump; 4. adding a pipeline; 5. flow through the conduit; 6. a heat preservation bracket; 7. heating pipes; 8. a mounting bracket; 9. a driving motor; 10. a drive gear; 11. a drive chain; 12. a rotating bracket; 13. a turbulence spoon; 14. a heat preservation layer; 15. a cooling bracket; 16. a heat exchange tube; 17. a filter basket; 18. a water chiller; 19. a transfer pump; 20. a feed conduit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, an embodiment of the present invention is provided: a pretreatment device for recycling salicylonitrile solvent comprises a main body bracket 1;
the cooling bracket 15 is arranged at one side of the lower end of the inner part of the main body bracket 1, the main body bracket 1 is fixedly connected with the cooling bracket 15, the lower end of the inner part of the cooling bracket 15 is provided with the water chiller 18, the water chiller 18 can exchange heat with the salicyl nitrile solvent through the heat exchange tube 16, the solubility of the salicyl nitrile solvent is reduced, a part of salicyl nitrile in the salicyl nitrile solvent is separated out, the salicyl nitrile concentration of the salicyl nitrile solvent is reduced, the subsequent chemical adjustment of the salicyl nitrile solvent is facilitated, the evaporation and crystallization amount of the salicyl nitrile solvent is reduced, a thick layer of crystallization is prevented from being formed on the inner wall of an evaporation crystallization kettle during the evaporation crystallization of the salicyl nitrile solvent, the heat conduction performance of the evaporation crystallization kettle is influenced, the crystallization of the subsequent salicyl nitrile is further influenced, the efficiency of the salicyl nitrile solvent during the evaporation crystallization is improved, the production efficiency of the salicyl nitrile is improved, the water chiller 18 is fixedly connected with the cooling bracket 15, the upper end of the water chiller 18 is provided with the heat exchange tube 16, one end of the heat exchange tube 16 is connected with the water outlet of the water chiller 18, and the other end of the heat exchange tube 16 is connected with the water inlet of the water chiller 18;
the conveying pump 19 is arranged on one side of the cooling support 15, the cooling support 15 is fixedly connected with the conveying pump 19, a flow-through pipeline 5 is arranged at the output end of the conveying pump 19, the flow-through pipeline 5 is fixedly connected with the conveying pump 19, a rotary support 12 is arranged in the flow-through pipeline 5, the rotary support 12 is arranged to be matched with a turbulent flow spoon 13 to enable a catalytic regulator to be fully mixed with a salicyl nitrile solvent, meanwhile, the turbulent flow spoon 13 can accelerate the flow of the salicyl nitrile solvent, the using effect of the cooling device is enhanced, the rotary support 12 is rotationally connected with the flow-through pipeline 5, a turbulent flow spoon 13 is arranged outside the rotary support 12, the turbulent flow spoon 13 is fixedly connected with the rotary support 12, a filter basket 17 is arranged at the lower end of one side of the cooling support 15, and the filter basket 17 is connected with the cooling support 15 through a clamping groove;
the heat preservation support 6, it sets up in the outside of flowing through pipeline 5, flow through pipeline 5 and heat preservation support 6 fixed connection, heat preservation 14 is installed to the inboard of heat preservation support 6, heat preservation 14 and heat preservation support 6 fixed connection, the internally mounted of heat preservation support 6 has heating pipe 7, installation heating pipe 7 can heat the salicylonitrile solvent, make salicylonitrile solvent temperature rise in advance, make the salicylonitrile solvent can more quick evaporation when getting into the evaporation crystallization kettle like this, shorten the time that the salicylonitrile solvent risen in the evaporation crystallization kettle, make the salicylonitrile crystallization more quick, heating pipe 7 and flow through pipeline 5 fixed connection.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, drive gear 10 is installed to the front end of flowing through pipeline 5, drive gear 10 and runing rest 12 fixed connection, the outside of drive gear 10 is provided with drive chain 11, install drive chain 11 can play the effect of linkage, guarantee the completion of device functionality, install installing support 8 on one side that is close to delivery pump 19 through pipeline 5 front end face, installing support 8 and flow through pipeline 5 fixed connection, catalyst regulator case 2 is installed to one side of main part support 1, install catalyst regulator case 2 can be convenient for to the inside catalytic regulator that adds of salicyl nitrile solvent, adjust the salicyl nitrile solvent, reinforcing arrangement's result of use, catalyst regulator case 2 and main part support 1 fixed connection, adding pump 3 is installed to one side of main part support 1, adding pump 3 and main part support 1 fixed connection, adding pipeline 4 is installed to the output of adding pump 3, adding pipeline 4 and adding pipeline 5 fixed connection, flow control solenoid valve is all set up to flow through pipeline 5 and adding pipeline 4 outside, the front end motor 9 of installing support 8 is installed to motor 9, drive support 9 and drive gear 8 are connected with main part 1 through drive support 10, one side of main part 20 fixed connection, feeding device is installed to main part support 1 and main part 20 fixed connection.
A method of treating a pretreatment device for recovery of a salicylnitrile solvent, comprising the steps of:
step one: the staff adds the salicyl nitrile solvent into the cooling bracket 15 through the feeding pipeline 20, and the cold water machine 18 exchanges heat between the refrigeration medium and the salicyl nitrile solvent through the heat exchange tube 16, so that the temperature of the salicyl nitrile solvent is reduced, the solubility of the salicyl nitrile solvent is reduced, and the salicyl nitrile is separated out;
step two: the salicyl nitrile solvent is discharged into the filter basket 17, the filter basket 17 filters the salicyl nitrile separated out from the salicyl nitrile solvent, and then the conveying pump 19 introduces the salicyl nitrile solvent into the pipeline 5;
step three: the driving motor 9 is powered to drive the driving gear 10 and the driving chain 11 to rotate, so that the rotating bracket 12 is driven to rotate, the turbulent flow spoon 13 is used for turbulent flow of the salicylnitrile solvent in the flowing pipeline 5, at the moment, the pump 3 is powered to add the catalytic regulator in the catalytic regulator box 2 into the flowing pipeline 5, and the turbulent flow spoon 13 is used for mixing the catalytic regulator with the salicylnitrile solvent;
step four: the heating pipe 7 is powered on, and the flow through the pipeline 5 is heated, so that the temperature of the salicyl nitrile solvent flowing through the interior of the pipeline 5 is increased, and the salicyl nitrile solvent is preheated;
step five: the high-temperature salicylnitrile solvent discharging device is characterized in that a worker collects the salicylnitrile solvent and performs evaporative crystallization operation on the salicylnitrile solvent by using an evaporative crystallization kettle.
Working principle: when in use, a worker adds the salicylonitrile solvent into the cooling bracket 15 through the feeding pipeline 20, the cold water machine 18 exchanges heat between the refrigeration medium and the salicylonitrile solvent through the heat exchange pipe 16, so that the temperature of the salicylonitrile solvent is reduced, the solubility of the salicylonitrile solvent is reduced, the salicylonitrile is separated out, then the salicylonitrile solvent is discharged into the filtering basket 17, the filtering basket 17 filters the salicylonitrile separated out by the salicylonitrile solvent, then the conveying pump 19 introduces the salicylonitrile solvent into the flowing pipeline 5, then the motor 9 is driven to electrically drive the driving gear 10 and the driving chain 11 to rotate, thereby driving the rotating bracket 12 to rotate, the turbulence spoon 13 is used for turbulence the salicylonitrile solvent in the flowing pipeline 5, at the moment, the adding pump 3 is used for electrically adding the catalytic regulator in the catalytic regulator box 2 into the flowing pipeline 5, the turbulence spoon 13 mixes the catalytic regulator with the salicylonitrile solvent, then the heating pipe 7 is powered on, the flow channel 5 is heated, the temperature of the salicylonitrile solvent flowing through the inner part of the flow channel 5 is increased, the salicylonitrile solvent is preheated, finally, a high Wen Shuiyang nitrile solvent discharging device is used, staff collects the salicylonitrile solvent and uses an evaporation crystallization kettle to carry out evaporation crystallization operation on the salicylonitrile solvent, the device is provided with a cold water machine 18 which can exchange heat with the salicylonitrile solvent through the heat exchange pipe 16, reduce the solubility of the salicylonitrile solvent, enable the salicylonitrile in the salicylonitrile solvent to separate out a part, reduce the salicylonitrile concentration of the salicylonitrile solvent, facilitate the subsequent chemical adjustment of the salicylonitrile solvent, reduce the evaporation crystallization amount of the salicylonitrile solvent, avoid the formation of a thick layer of crystallization on the inner wall of the evaporation crystallization kettle during the evaporation crystallization of the salicylonitrile solvent, influence the heat conducting property of the evaporation crystallization kettle, further influence the crystallization of the subsequent salicylonitrile, the efficiency of salicylonitrile solvent when carrying out evaporation crystallization recovery salicylonitrile is improved, the production efficiency of salicylonitrile is improved, the installation runing rest 12 makes it cooperate vortex spoon 13 can make catalytic regulator and salicylonitrile solvent intensive mixing, vortex spoon 13 can accelerate the flow of salicylonitrile solvent simultaneously, the result of use of reinforcing device, install heating pipe 7 can heat the salicylonitrile solvent, make the salicylonitrile solvent temperature rise in advance, make the salicylonitrile solvent can more quick evaporation when getting into evaporation crystallization kettle like this, shorten the time that the salicylonitrile solvent was heated up in evaporation crystallization kettle, make the salicylonitrile crystallization more quick, install drive chain 11 can play the effect of linkage, guarantee the integrality of device functionality, install catalytic regulator case 2 can be convenient for add catalytic regulator in the inside of salicylnitrile solvent, adjust the salicylnitrile solvent, reinforcing device's result of use.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. Pretreatment device for recycling salicylonitrile solvent, comprising a main body bracket (1), and being characterized in that:
the cooling support (15) is arranged on one side of the lower end of the inner part of the main body support (1), the main body support (1) is fixedly connected with the cooling support (15), a water cooler (18) is arranged at the lower end of the inner part of the cooling support (15), the water cooler (18) is fixedly connected with the cooling support (15), a heat exchange tube (16) is arranged at the upper end of the water cooler (18), one end of the heat exchange tube (16) is connected with a water outlet of the water cooler (18), and the other end of the heat exchange tube (16) is connected with a water inlet of the water cooler (18);
the conveying pump (19) is arranged on one side of the cooling support (15), the cooling support (15) is fixedly connected with the conveying pump (19), the output end of the conveying pump (19) is provided with a flowing pipeline (5), the flowing pipeline (5) is fixedly connected with the conveying pump (19), a rotary support (12) is arranged in the flowing pipeline (5), the rotary support (12) is rotationally connected with the flowing pipeline (5), a turbulence spoon (13) is arranged outside the rotary support (12), the turbulence spoon (13) is fixedly connected with the rotary support (12), a driving gear (10) is arranged at the front end of the flowing pipeline (5), the driving gear (10) is fixedly connected with the rotary support (12), a driving chain (11) is arranged outside the driving gear (10), a mounting support (8) is arranged on one side, close to the conveying pump (19), of the front end surface of the flowing pipeline (5), of the mounting support (8) is fixedly connected with the flowing pipeline (5), a motor (9) is arranged at the front end of the mounting support (8), the motor (9) is fixedly connected with the driving gear (9), and the driving gear (9) is fixedly connected with the driving gear (9), the lower end of one side of the cooling bracket (15) is provided with a filter basket (17), and the filter basket (17) is connected with the cooling bracket (15) through a clamping groove;
the heat preservation support (6), it sets up the outside of flowing through pipeline (5), flow through pipeline (5) and heat preservation support (6) fixed connection, heat preservation (14) are installed to the inboard of heat preservation support (6), heat preservation (14) and heat preservation support (6) fixed connection, internally mounted of heat preservation support (6) has heating pipe (7), heating pipe (7) and flow through pipeline (5) fixed connection.
2. A pretreatment device for recovery of a salicylnitrile solvent according to claim 1, wherein: one side of the main body support (1) is provided with a catalytic regulator box (2), and the catalytic regulator box (2) is fixedly connected with the main body support (1).
3. A pretreatment device for recovery of a salicylnitrile solvent according to claim 2, wherein: the novel water heater is characterized in that an adding pump (3) is arranged on one side of the main body support (1), the adding pump (3) is fixedly connected with the main body support (1), an adding pipeline (4) is arranged at the output end of the adding pump (3), the adding pipeline (4) is fixedly connected with the adding pump (3), and the adding pipeline (4) is fixedly connected with a flowing pipeline (5).
4. A pretreatment device for recovery of a salicylnitrile solvent according to claim 3, wherein: flow control electromagnetic valves are arranged outside the flow-through pipeline (5) and the adding pipeline (4).
5. A pretreatment device for recovery of a salicylnitrile solvent as defined in claim 4, wherein: the feeding pipeline (20) is arranged at the lower end of one side of the main body support (1), and the feeding pipeline (20) is fixedly connected with the main body support (1).
6. A method of treatment of a pretreatment device for recovery of a salicylnitrile solvent, based on the implementation of a pretreatment device for recovery of a salicylnitrile solvent according to claim 5, comprising the steps of:
step one: the method comprises the steps that a worker adds a salicyl nitrile solvent into a cooling bracket (15) through a feeding pipeline (20), a cold water machine (18) exchanges heat between a refrigeration medium and the salicyl nitrile solvent through a heat exchange pipe (16), so that the temperature of the salicyl nitrile solvent is reduced, the solubility of the salicyl nitrile solvent is reduced, and the salicyl nitrile is separated out;
step two: the salicylonitrile solvent is discharged into a filter basket (17), the filter basket (17) filters the salicylonitrile separated out from the salicylonitrile solvent, and then a delivery pump (19) introduces the salicylonitrile solvent into the pipeline (5);
step three: the driving motor (9) is powered to drive the driving gear (10) and the driving chain (11) to rotate, so that the rotating bracket (12) is driven to rotate, the turbulent flow spoon (13) is used for turbulent flow of the salicylonitrile solvent in the flowing pipeline (5), at the moment, the pump (3) is powered to add the catalytic regulator in the catalytic regulator box (2) into the flowing pipeline (5), and the turbulent flow spoon (13) is used for mixing the catalytic regulator with the salicylonitrile solvent;
step four: the heating pipe (7) is electrified, and the flow through the pipeline (5) is heated, so that the temperature of the salicyl nitrile solvent flowing through the interior of the pipeline (5) is increased, and the salicyl nitrile solvent is preheated;
step five: the high-temperature salicylnitrile solvent discharging device is characterized in that a worker collects the salicylnitrile solvent and performs evaporative crystallization operation on the salicylnitrile solvent by using an evaporative crystallization kettle.
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| CN202210687354.2A CN115121034B (en) | 2022-06-16 | 2022-06-16 | Pretreatment device for recycling salicylonitrile solvent and treatment method thereof |
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| CN202210687354.2A CN115121034B (en) | 2022-06-16 | 2022-06-16 | Pretreatment device for recycling salicylonitrile solvent and treatment method thereof |
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| CN115121034B true CN115121034B (en) | 2023-12-26 |
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| CN111691216A (en) * | 2020-06-28 | 2020-09-22 | 南京林业大学 | Industrial-scale microwave-assisted wood fiber biomass full-component separation method and equipment |
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