CN218689478U - Polyamide resin apparatus for producing - Google Patents
Polyamide resin apparatus for producing Download PDFInfo
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- CN218689478U CN218689478U CN202222976532.1U CN202222976532U CN218689478U CN 218689478 U CN218689478 U CN 218689478U CN 202222976532 U CN202222976532 U CN 202222976532U CN 218689478 U CN218689478 U CN 218689478U
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- polyamide resin
- reaction kettle
- pressure reaction
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Abstract
The utility model provides a polyamide resin apparatus for producing, include: the device comprises a high-pressure reaction kettle, a heating device, an external protective nitrogen pipeline, a discharging tank and a plurality of spray washing towers; the heating device is used for providing heat for the reaction in the high-pressure reaction kettle; the discharge hole at the bottom of the high-pressure reaction kettle is connected with the feed inlet of a discharge tank, the air inlet of the discharge tank is connected with an external protective nitrogen pipeline, and the air outlet of the discharge tank is sequentially connected with a plurality of spray washing towers. The utility model provides an end of reaction in the former high temperature polyamide resin production process and fall to the artifical material problem of digging of normal atmospheric temperature, avoided digging simultaneously that the in-process solvent inorganization of material volatilizees environmental protection risk and the potential safety hazard that causes.
Description
Technical Field
The utility model relates to a polyamide resin production field, concretely relates to polyamide resin apparatus for producing.
Background
The polyamide chromatographic resin adopts a high-temperature reaction process, and is generally discharged after the reaction is finished and the temperature is reduced to normal temperature. However, due to the particularity of the polyamide material, the phenomenon of precipitation and solidification of the feed liquid occurs when the reaction is finished and the temperature is reduced to be below 100 ℃. When the reaction kettle jacket is cooled, the material is formed into gradient cooling from the outer side to the central shaft, the material liquid on the outer side is solidified, the torque of the stirring paddle is increased, and the current of the stirring motor is gradually increased. The cooling efficiency of the feed liquid of the reaction kettle is linearly reduced from outside to inside, finally the feed in the reaction kettle is completely solidified into blocks, the discharge can only open a manhole cover or a discharge hole, and the material is dug by a manual auxiliary machine.
Because the solvent is used in the reaction, the open-type material digging solvent is greatly volatilized, the environmental protection risk is large, the safety risk is high, meanwhile, the material digging is needed manually, the labor intensity is high, and the working environment difference becomes the bottleneck of large-scale mass production of polyamide resin produced by a high-temperature high-pressure process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the polyamide resin apparatus for producing is provided to the not enough that exists in the production technology.
The utility model discloses a following technical scheme realizes:
a polyamide resin production apparatus comprising: the device comprises a high-pressure reaction kettle, a heating device, an external protective nitrogen pipeline, a discharging tank and a plurality of spray washing towers;
the heating device is used for providing heat for the reaction in the high-pressure reaction kettle;
the discharge hole at the bottom of the high-pressure reaction kettle is connected with the feed inlet of a discharge tank, the air inlet of the discharge tank is connected with an external protective nitrogen pipeline, and the air outlet of the discharge tank is sequentially connected with a plurality of spray washing towers.
Preferably, the spray washing tower comprises a primary spray washing tower and a secondary spray washing tower; the gas outlet of the discharging tank is sequentially connected with the first-stage spray washing tower and the second-stage spray washing tower.
Preferably, the heating device comprises an external heating heat-conducting oil heating device and a circulating oil pump, an oil outlet of the external heating heat-conducting oil heating device is connected with an oil inlet on a jacket of the high-pressure reaction kettle through the circulating oil pump, and an oil outlet on the jacket of the high-pressure reaction kettle is connected with an oil inlet of the external heating heat-conducting oil heating device.
Preferably, the external supply protection nitrogen pipeline is also connected with the air inlet of the high-pressure reaction kettle.
Preferably, the discharging tank is provided with a safety valve.
Preferably, the discharging tank is provided with a discharging door.
Preferably, the high-pressure reaction kettle is provided with a safety valve.
Preferably, the washing liquid outlet at the bottom of the spray washing tower is connected with the washing liquid inlet at the top of the spray washing tower through a pump.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a polyamide resin apparatus for producing, heating device are the reaction in the high-pressure batch autoclave and provide the heat, react, and outer nitrogen gas that supplies carries out gas replacement to the blowing jar, and the back is accomplished in the reaction in the high-pressure batch autoclave, and the blowing is to the blowing jar in, and the high temperature tail gas that produces during the blowing sprays the qualified unloading of washing through spraying the scrubbing tower. Compared with the prior art, the discharging mode after reaction better meets the requirements of chemical production, the finished material discharged under pressure is fluffy, which is beneficial to subsequent processing, the material quality is more stable, and the secondary pollution caused by manual material digging is avoided. The discharge is continuously replaced by adopting nitrogen, the risk that the residual solvent is reacted to form explosive mixed gas does not exist, and the alcohol solvent is used for being sprayed and washed by water to reach the standard and be discharged, so that the environmental protection risk does not exist. The utility model discloses avoided the former high temperature polyamide resin production in-process reaction to end and fall to the artifical condition of digging the material of normal atmospheric temperature, avoided digging simultaneously that the in-process solvent inorganization of material volatilizees environmental protection risk and the potential safety hazard that causes.
Furthermore, the external supply protection nitrogen pipeline is also connected with an air inlet of the high-pressure reaction kettle, after discharging, emptying is judged according to the pressure condition in the high-pressure reaction kettle, and after emptying, nitrogen is continuously introduced for replacement and cooling.
Furthermore, set up the relief valve on the blowing jar, avoid unloading tail gas to lead to the fact the jam because of the ejection of compact is too fast when going to spray the scrubbing tower, blowing jar superpressure causes equipment damage.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
in the figure: the device comprises an external heating heat-conducting oil heating device 1, a circulating oil pump 2, a high-pressure reaction kettle 3, a discharging tank 4, an external supply protection nitrogen pipeline 5, a primary spray washing tower 6 and a secondary spray washing tower 7.
Detailed Description
For further understanding, the present invention will be described with reference to the following examples, which are provided for further explaining the features and advantages of the present invention and are not intended to limit the claims of the present invention.
As shown in fig. 1, the utility model relates to a novel polyamide resin production device, include: the device comprises a high-pressure reaction kettle 3, an external heating heat-conducting oil temperature rising device 1, a circulating oil pump 2, an external supply protection nitrogen pipeline with the pressure more than or equal to 0.2Mpa5, a discharging tank 4, a primary spray washing tower 6 and a secondary spray washing tower 7.
The external heating heat conduction oil temperature rising device 1 is filled with heat conduction oil, an oil outlet of the external heating heat conduction oil temperature rising device 1 is connected with an oil inlet on a jacket of the high-pressure reaction kettle 3 through the circulating oil pump 2, and an oil outlet on the jacket of the high-pressure reaction kettle 3 is connected with an oil inlet of the external heating heat conduction oil temperature rising device 1. The external heating heat conduction oil temperature rising device 1 is matched with the circulating oil pump 2 to provide heat for the reaction in the high-pressure reaction kettle 3.
A discharge port at the bottom of the high-pressure reaction kettle 3 is connected with a feed inlet of a discharge tank 4, an air inlet of the discharge tank 4 is connected with an external supply protection nitrogen pipeline 5, and an air outlet of the discharge tank 4 is sequentially connected with a first-stage spray washing tower 6 and a second-stage spray washing tower 7. The external supply protective nitrogen pipeline 5 is also connected with the air inlet of the high-pressure reaction kettle 3, and the external supply protective nitrogen pipeline 5 is used for replacing the air in the high-pressure reaction kettle 3 and the discharge tank 4. The gas discharged from the secondary spray washing tower 7 is directly discharged into the atmosphere.
Set up the relief valve on blowing jar 4, the setting pressure of relief valve is higher than blowing tail gas pressure, is less than the design pressure of storage tank, causes the jam because of the ejection of compact is too fast when avoiding unloading tail gas to go to spray scrubber, and blowing jar superpressure causes equipment to damage.
The high-pressure reaction kettle 3 is provided with a safety valve, and the integral pressure of the safety valve is higher than the control pressure of the reaction process and lower than the design pressure of the reaction kettle 3.
The inner parts of the first-stage spray washing tower 6 and the second-stage spray washing tower 7 are filled with loose hollow ball fillers, and water is used for spraying and washing circularly. And a washing liquid outlet at the bottom of the spraying washing tower is connected with a washing liquid inlet at the top of the spraying washing tower through a pump. And wastewater generated by the primary spray washing tower and the secondary spray washing tower is treated by a sewage station.
The utility model discloses the working process is as follows:
setting the reaction temperature after the high-pressure reaction kettle 3 is fed, starting the external heating heat conduction oil heating device 1 and the circulating oil pump 2 to heat, and reacting according to the process requirements when the high-pressure reaction kettle 3 is heated to the required reaction temperature and pressure;
filling nitrogen into the discharge tank 4 through an external supply protection nitrogen pipeline 5 for continuous replacement for more than 15min, completely replacing oxygen in the discharge tank 4, and enabling high-temperature solvent gas generated in the discharge process to be in an oxygen-free or oxygen-deficient environment;
after the reaction in the high-pressure reaction kettle 3 is finished, opening a discharge valve to continuously discharge the materials to a discharge tank 4, washing and absorbing high-temperature tail gas generated in the discharging process by a primary spraying and gas washing tower 6 and a secondary spraying and gas washing tower 7 in sequence, and discharging the qualified tail gas after the two-stage washing; washing the solvent-containing wastewater to remove sewage;
the emptying is judged according to the pressure condition in the high-pressure reaction kettle 3, nitrogen is continuously introduced for replacement and cooling after emptying, and the discharge door of the discharge tank 4 is opened for discharging after the temperature is reduced to normal temperature.
Example 1
This embodiment is according to the utility model discloses a device uses 500L high-pressure batch autoclave, external heating conduction oil rising temperature device, supplies protection nitrogen gas outward, discharge tank, one-level spray scrubbing tower, second grade spray scrubbing tower. And a comparative test was performed using a conventional screening apparatus. The results are shown in Table 1.
TABLE 1 comparison of the device and original production process
Can find out from above-mentioned table 1, the utility model discloses can obviously promote production efficiency, have greatly promoted in safety, environmental protection risk control, more do benefit to product quality control simultaneously.
The present invention is not limited to the above embodiment, and adopts the same or similar structure as the above embodiment of the present invention, and obtains other structural designs, all within the protection scope of the present invention.
Claims (8)
1. A polyamide resin production apparatus, characterized by comprising: the device comprises a high-pressure reaction kettle (3), a heating device, an external supply protection nitrogen pipeline (5), a discharge tank (4) and a plurality of spray washing towers;
the heating device is used for providing heat for the reaction in the high-pressure reaction kettle (3);
a discharge port at the bottom of the high-pressure reaction kettle (3) is connected with a feed inlet of a material discharging tank (4), a gas inlet of the material discharging tank (4) is connected with an external supply protection nitrogen pipeline (5), and a gas outlet of the material discharging tank (4) is sequentially connected with a plurality of spray washing towers.
2. The polyamide resin production apparatus as claimed in claim 1, wherein the spray scrubber comprises a primary spray scrubber (6) and a secondary spray scrubber (7); the air outlet of the material discharge tank (4) is sequentially connected with a first-stage spray washing tower (6) and a second-stage spray washing tower (7).
3. The polyamide resin production device according to claim 1, wherein the heating device includes an external heating heat conduction oil temperature increasing device (1) and a circulating oil pump (2), an oil outlet of the external heating heat conduction oil temperature increasing device (1) is connected with an oil inlet on a jacket of the high-pressure reaction kettle (3) through the circulating oil pump (2), and an oil outlet on the jacket of the high-pressure reaction kettle (3) is connected with an oil inlet of the external heating heat conduction oil temperature increasing device (1).
4. The apparatus for producing a polyamide resin as claimed in claim 1, wherein the external supply protection nitrogen line (5) is further connected to an inlet port of the autoclave (3).
5. The apparatus for producing a polyamide resin as claimed in claim 1, wherein the blow tank (4) is provided with a safety valve.
6. The polyamide resin production apparatus as claimed in claim 1, wherein the discharge tank (4) is provided with a discharge door.
7. The apparatus for producing a polyamide resin as claimed in claim 1, wherein the high-pressure reactor (3) is provided with a safety valve.
8. The apparatus for producing a polyamide resin as claimed in claim 1, wherein the outlet of the washing liquid at the bottom of the spray washing tower is connected to the inlet of the washing liquid at the top of the spray washing tower by a pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976532.1U CN218689478U (en) | 2022-11-08 | 2022-11-08 | Polyamide resin apparatus for producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222976532.1U CN218689478U (en) | 2022-11-08 | 2022-11-08 | Polyamide resin apparatus for producing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218689478U true CN218689478U (en) | 2023-03-24 |
Family
ID=85610644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222976532.1U Active CN218689478U (en) | 2022-11-08 | 2022-11-08 | Polyamide resin apparatus for producing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218689478U (en) |
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2022
- 2022-11-08 CN CN202222976532.1U patent/CN218689478U/en active Active
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