Photosensitive resin production system

Abstract

The photosensitive resin production system comprises a first reaction kettle, a first raw material tank, a second raw material tank, a centrifugal machine, a drying machine and a recovery assembly, the first raw material tank and the second raw material tank are both communicated with the interior of the first reaction kettle, and the centrifugal machine is provided with a feeding end and a discharging end; the feeding end of the rectifier is communicated with the interior of the first reaction kettle, the dryer is connected to the discharging end of the centrifugal machine, the recovery assembly comprises a rectifier with a feeding end and a discharging end, the feeding end of the rectifier is communicated with a waste liquid and waste gas outlet of the centrifugal machine or the dryer, and the discharging end of the rectifier is connected with the first raw material tank and the second raw material tank. According to the utility model, the problem of waste of raw materials caused by direct discharge of tail gas and waste liquid generated by centrifugation and drying in the production process can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photosensitizer production technical field, concretely relates to a photosensitive resin production system. BACKGROUND

[0002] Photosensitive resin refers to the material for photocuring rapid prototyping as liquid photocuring resin, or liquid photosensitive resin, which is mainly composed of oligomer, photoinitiator and diluent. In the past two years, photosensitive resin is being used in the emerging industry of 3D printing, and it is favored and valued by the industry because of its excellent properties.

[0003] Generally, the production of diazonium naphthoquinone sulfonate-photosensitive resin uses photosensitizer (2-diazo-1-naphthoquinone-4-sulfonyl chloride) and photosensitive resin as raw materials, triethylamine and hydrochloric acid as acid-base regulators, and acetone as a solvent. The finished product is prepared after esterification, acid precipitation, centrifugal separation and drying. The tail gas and waste liquid generated during centrifugation and drying in the production process contain a large amount of acetone. If the tail gas and waste liquid containing acetone are directly discharged, not only will it cause environmental pollution, but also will cause waste of raw materials.

[0004] Therefore, there is an urgent need for a photosensitive resin production system to solve the problem of waste of raw materials caused by directly discharging the tail gas and waste liquid generated during centrifugation and drying in the production process in the prior art. UTILITY MODEL CONTENT

[0005] The utility model aims to overcome the above technical deficiencies and proposes a photosensitive resin production system to solve the technical problem of waste of raw materials caused by directly discharging the tail gas and waste liquid generated during centrifugation and drying in the production process in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a photosensitive resin production system, which comprises:

[0008] A first reaction kettle;

[0009] A first raw material tank and a second raw material tank, which are both connected with the inside of the first reaction kettle;

[0010] A centrifuge, which has a feeding end and a discharging end, and the feeding end is connected with the inside of the first reaction kettle;

[0011] A drying machine connected with the discharging end of the centrifuge; and

[0012] The recovery assembly comprises a rectifier, the rectifier having a feed end and a discharge end, and the feed end of the rectifier is connected with the waste liquid and waste gas outlet of the centrifuge or the dryer, and the discharge end is connected with the first raw material tank and the second raw material tank.

[0013] In some embodiments, the first raw material tank and the second raw material tank are high tanks, and the first raw material tank and the second raw material tank are respectively used for injecting acetone solution and triethylamine solution into the first reaction kettle.

[0014] In some embodiments, the photosensitive resin production system further comprises a second reaction kettle and a third raw material tank, the second reaction kettle is arranged between the first reaction kettle and the centrifuge, and the liquid inlet end of the second reaction kettle is connected with the liquid outlet end of the first reaction kettle, and the liquid outlet end is connected with the feed end of the centrifuge, the third raw material tank is a high tank, and the inside of the third raw material tank is connected with the inside of the second reaction kettle, and is used for injecting dilute hydrochloric acid solution into the first reaction kettle.

[0015] In some embodiments, the discharge end of the rectifier comprises a first discharge sub-end and a second discharge sub-end, the first discharge sub-end of the rectifier is connected with the inside of the first raw material tank, and is used for recovering acetone solution, and the second discharge sub-end of the rectifier is connected with the inside of the second raw material tank, and is used for recovering triethylamine acetone solution.

[0016] In some embodiments, the discharge end of the rectifier further comprises a waste liquid sub-end, and the recovery assembly further comprises an activated carbon adsorber connected with the waste liquid sub-end of the rectifier.

[0017] In some embodiments, the dryer has a feed end, a discharge end for outputting products, and a gas outlet end, the feed end of the dryer is connected with the discharge end of the centrifuge, the recovery assembly further comprises a condenser, the condenser has a gas inlet end and a first liquid outlet end, the gas inlet end of the condenser is connected with the gas outlet end of the dryer, and the first liquid outlet end of the condenser is connected with the liquid inlet end of the rectifier.

[0018] In some embodiments, the condenser further has a second liquid outlet end, and the second liquid outlet end of the condenser is connected with the activated carbon adsorber.

[0019] In some embodiments, the photosensitive resin production system further comprises a fourth raw material tank and a fifth raw material tank, and the inside of the fourth raw material tank and the fifth raw material tank is respectively connected with the inside of the first reaction kettle.

[0020] In some embodiments, the first reaction kettle and the second reaction kettle are respectively provided with stirring paddles, and the two stirring paddles can respectively rotate relative to the first reaction kettle and the second reaction kettle.

[0021] In some embodiments, the photosensitive resin production system further comprises two driving motors, which are arranged one-to-one with the stirring paddles, and the driving motors have fixed ends and output shafts, the fixed ends of the driving motors are connected to the first reaction kettle or the second reaction kettle, and the output shafts are connected to the stirring paddles.

[0022] Compared with the prior art, the photosensitive resin production system has the beneficial effects that the first raw material tank and the second raw material tank are connected to the inside of the first reaction kettle, for injecting raw materials into the first reaction kettle, the feeding end of the centrifuge is connected to the inside of the first reaction kettle, for separating materials and waste liquid, the drying machine is connected to the discharging end of the centrifuge, for drying the materials, the feeding end of the rectifier is connected to the waste liquid and waste gas outlets of the centrifuge or the drying machine, and the discharging end is connected to the first raw material tank and the second raw material tank, for respectively recovering the waste liquid and waste gas in the centrifuge and the drying machine and supplying them to the first raw material tank and the second raw material tank. Compared with the prior art, the waste liquid separated by the centrifuge and the waste gas generated by the drying machine are concentrated and treated by the rectifier, and are recovered into the first raw material tank and the second raw material tank for repeated use, which reduces the amount of raw materials and production cost, and solves the technical problem of waste of raw materials caused by direct discharge of tail gas and waste liquid generated by centrifugation and drying in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic diagram of a photosensitive resin production system provided by an embodiment of the present application.

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] The first reaction kettle 1; the first raw material tank 2; the second raw material tank 3; the centrifuge 4; the drying machine 5; the recovery assembly 6; the rectifier 61; the activated carbon adsorber 62; the condenser 63; the second reaction kettle 7; the third raw material tank 8; the fourth raw material tank 9; the fifth raw material tank 10; the stirring paddle 11; the driving motor 12. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] In order to solve the technical problem of waste of raw materials caused by directly discharging the tail gas and waste liquid generated by centrifugation and drying in the production process, the utility model provides a sensitive resin production system, which can realize centralized treatment of the waste liquid separated from the centrifuge 4 and the waste gas generated by the drying machine 5 through the setting of the rectifier 61, and recycle to the first raw material tank 2 and the second raw material tank 3 for repeated use, reduce the raw material usage, reduce the production cost.

[0028] It should be noted that the sensitive resin production system is used in but not limited to the photosensitizer production technical field, in order to facilitate the description, in the utility model, only the sensitive resin production system is applied to the photosensitizer production technical field as an example for description, and the principle of the sensitive resin production system applied to other types of equipment is substantially the same as that applied to the photosensitizer production technical field, which will not be repeated here.

[0029] Please refer to Figure 1 , Figure 1 It is the structure schematic drawing of the sensitive resin production system in the embodiment of the utility model, the photosensitive resin production system includes the first reation kettle 1, the first raw material tank 2 and the second raw material tank 3, the centrifuge 4, the drying machine 5 and the recovery assembly 6, the first raw material tank 2 and the second raw material tank 3 are all connected with the inside of the first reation kettle 1, the centrifuge 4 has the feeding end and the discharging end, the feeding end of the centrifuge 4 is connected with the inside of the first reation kettle 1, the drying machine 5 is connected to the discharging end of the centrifuge 4, the recovery assembly 6 includes the rectifier 61, the rectifier 61 has the feeding end and the discharging end, the feeding end of the rectifier 61 is connected with the waste liquid and waste gas outlet of the centrifuge 4 or the drying machine 5, and the discharging end of the rectifier 61 is connected with the first raw material tank 2 and the second raw material tank 3.

[0030] In the device, the first raw material tank 2 and the second raw material tank 3 are all connected with the inside of the first reation kettle 1, for injecting raw materials into the first reation kettle 1, the feeding end of the centrifuge 4 is connected with the inside of the first reation kettle 1, for separating materials and waste liquid, the drying machine 5 is connected to the discharging end of the centrifuge 4, for drying materials, the feeding end of the rectifier 61 is connected with the waste liquid and waste gas outlet of the centrifuge 4 or the drying machine 5, and the discharging end of the rectifier 61 is connected with the first raw material tank 2 and the second raw material tank 3, for recycling the waste liquid and waste gas in the centrifuge 4 and the drying machine 5 respectively and supplying to the first raw material tank 2 and the second raw material tank 3.

[0031] Compared with the prior art, the waste liquid separated from the centrifuge 4 and the waste gas generated by the drying machine 5 are centrally treated through the setting of the rectifier 61, and are recycled to the first raw material tank 2 and the second raw material tank 3 for repeated use, reduce the raw material usage, reduce the production cost, can solve the technical problem of waste of raw materials caused by directly discharging the tail gas and waste liquid generated by centrifugation and drying in the production process in the prior art.

[0032] Further, the reaction kettle is a common and easy-to-purchase equipment in the market, which is a conventional setting known to those skilled in the art, and will not be described in more detail here.

[0033] In one embodiment, referring to Figure 1 , the first raw material tank 2 and the second raw material tank 3 are both high tanks, and the first raw material tank 2 and the second raw material tank 3 are respectively used to inject acetone solution and triethylamine solution into the first reaction kettle 1.

[0034] The first raw material tank 2 and the second raw material tank 3 are respectively used to inject acetone solution and triethylamine solution into the first reaction kettle 1, for the occurrence of esterification reaction.

[0035] Further, the high tank is a common and easy-to-purchase equipment in the market, which is a conventional setting known to those skilled in the art, and will not be described in more detail here.

[0036] In this embodiment, as shown in Figure 1 , the system further includes a second reaction kettle 7 and a third raw material tank 8, a fourth raw material tank 9 and a fifth raw material tank 10.

[0037] Among them, the second reaction kettle 7 is arranged between the first reaction kettle 1 and the centrifuge 4, and the liquid inlet end of the second reaction kettle 7 is connected in communication with the liquid outlet end of the first reaction kettle 1, and the liquid outlet end is connected in communication with the feed end of the centrifuge 4, the third raw material tank 8 is a high tank, and the inside of the third raw material tank 8 is connected in communication with the inside of the second reaction kettle 7, for injecting dilute hydrochloric acid solution into the first reaction kettle 1.

[0038] The mixed solution after the esterification reaction enters the second reaction kettle 7 for acidification reaction.

[0039] In one embodiment, referring to Figure 1 , the inside of the fourth raw material tank 9 and the fifth raw material tank 10 are respectively connected in communication with the inside of the first reaction kettle 1.

[0040] By arranging the fourth raw material tank 9 and the fifth raw material tank 10, two raw materials of photosensitizer (2-diazo-1-naphthoquinone-4-sulfonyl chloride) and photosensitive resin required for esterification reaction are added into the first reaction kettle 1.

[0041] Further, the photosensitizer (2-diazo-1-naphthoquinone-4-sulfonyl chloride) and the photosensitive resin are conventional settings known to those skilled in the art, and will not be described in more detail here.

[0042] In one embodiment, referring to Figure 1 , the first reaction kettle 1 and the second reaction kettle 7 are respectively provided with stirring paddles 11, and the two stirring paddles 11 can respectively rotate relative to the first reaction kettle 1 and the second reaction kettle 7.

[0043] The two stirring paddles 11 can rotate in the first reaction kettle 1 and the second reaction kettle 7 respectively, which can facilitate the occurrence of esterification and acidification.

[0044] Further, the stirring paddles 11 are common and easy to purchase in the market, which are driven to rotate relative to the reaction kettle by the motor, and play a role in promoting stirring. This is a conventional setting known to those skilled in the art, and will not be described in more detail here.

[0045] In one embodiment, referring to Figure 1 The system further comprises two driving motors 12, which are arranged one-to-one with the stirring paddles 11. The driving motor 12 has a fixed end and an output shaft. The fixed end of the driving motor 12 is connected to the first reaction kettle 1 or the second reaction kettle 7, and the output shaft is connected to the stirring paddle 11.

[0046] The fixed end of the driving motor 12 is connected to the outer wall of the top end of the first reaction kettle 1 or the second reaction kettle 7, and the output shaft of the driving motor 12 is built in the first reaction kettle 1 or the second reaction kettle 7 and connected to the stirring paddle 11. The driving motor 12 is a conventional setting known to those skilled in the art, and will not be described in more detail here.

[0047] In this embodiment, the centrifuge 4 has a liquid inlet end and a liquid outlet end. The liquid inlet end of the centrifuge 4 is in communication with the interior of the first reaction kettle 1, and the liquid outlet end of the centrifuge 4 is in communication with the interior of the rectifier 61.

[0048] The liquid inlet end and the liquid outlet end of the centrifuge 4 can be in communication with the second reaction kettle 7 and the rectifier 61, so that the mixed liquid after reaction is centrifuged into material and waste liquid.

[0049] In one embodiment, referring to Figure 1 The discharge end of the rectifier 61 includes a first discharge end and a second discharge end. The liquid inlet end of the rectifier 61 is in communication with the liquid outlet end of the centrifuge 4, and the first discharge end of the rectifier 61 is in communication with the interior of the first raw material tank 2 for recovering acetone solution. The second discharge end of the rectifier 61 is in communication with the interior of the second raw material tank 3 for recovering triethylamine acetone solution.

[0050] The rectifier 61 can rectify the waste liquid generated by the liquid outlet end of the centrifuge 4 to form acetone solution, triethylamine acetone solution and impurity-containing kettle liquid. The acetone solution and the triethylamine acetone solution can be respectively transported into the first raw material tank 2 and the second raw material tank 3 for recycling.

[0051] Further, the rectifier 61 is common and easy to purchase in the market, which is a conventional setting known to those skilled in the art, and will not be described in more detail here. Further, the rectifier 61 is common and easy to purchase in the market, which is a conventional setting known to those skilled in the art, and will not be described in more detail here.

[0052] In one embodiment, referring to Figure 1 The outlet end of the rectifier 61 also comprises a waste liquid branch, and the recovery assembly 6 further comprises an activated carbon adsorber 62 connected to the waste liquid branch of the rectifier 61.

[0053] The impurity-containing kettle liquid generated after the rectification treatment can be filtered by the activated carbon adsorber 62, so as to meet the emission standard.

[0054] Further, the activated carbon adsorber 62 is a common activated carbon purification filter device on the market and is easy to purchase, and is a conventional setting known to those skilled in the art, which will not be described in detail.

[0055] In the embodiment, the dryer 5 has an inlet end, an outlet end for outputting products, and an outlet end for outputting waste gas, the inlet end of the dryer 5 is in communication with the outlet end of the centrifugal machine 4, the recovery assembly 6 further comprises a condenser 63, the condenser 63 has an inlet end and a first outlet end, the inlet end of the condenser 63 is in communication with the outlet end of the dryer 5, and the first outlet end of the condenser 63 is in communication with the inlet end of the rectifier 61.

[0056] The dryer 5 dries the material obtained after centrifugation, and completes the output of products and the generation of waste gas, and the acetone solution obtained by condensing the high-temperature waste gas by the condenser 63 is sent into the rectifier 61 again for rectification treatment, so as to improve the recovery rate of raw materials and reduce production cost.

[0057] Further, the condenser 63 is a common condensing device on the market and is easy to purchase, for example, a plate condenser 63, which is a conventional setting known to those skilled in the art, which will not be described in detail.

[0058] In one embodiment, referring to Figure 1 The condenser 63 also has a second outlet end, and the second outlet end of the condenser 63 is connected to the activated carbon adsorber 62.

[0059] The water or impurity-containing kettle liquid generated by the condenser 63 is sent into the activated carbon adsorber 62 for filtering and purifying treatment, which meets and satisfies the environmental protection requirements.

[0060] In order to better understand the present application, the technical scheme of the present application will be described in detail below in combination with Figure 1

[0061] ​The first raw material tank 2 and the second raw material tank 3 are communicated with the interior of the first reaction kettle 1, and are used for injecting raw materials into the first reaction kettle 1; the feeding end of the centrifuge 4 is communicated with the interior of the first reaction kettle 1, and is used for separating materials and waste liquid; the drying machine 5 is connected to the discharging end of the centrifuge 4, and is used for drying the materials; the feeding end of the rectifier 61 is communicated with the waste liquid and waste gas outlets of the centrifuge 4 or the drying machine 5, and the discharging end of the rectifier 61 is connected with the first raw material tank 2 and the second raw material tank 3, and is used for recycling the waste liquid and waste gas in the centrifuge 4 and the drying machine 5 respectively, and supplying the waste liquid and waste gas to the first raw material tank 2 and the second raw material tank 3.

[0062] The specific working process of the utility model is as follows: esterification reaction: 300 kg of acetone and 8 kg of triethylamine solution in the first raw material tank 2 and the second raw material tank 3 are added into the first reaction kettle 1 in a vacuum pumping mode, then the photosensitizer in the fourth raw material tank 9 and photosensitive resin in the fifth raw material tank are added in turn under the stirring of the stirring paddle 11, wherein the photosensitive resin is 20 kg, and the photosensitizer (2-diazo-1-naphthoquinone-4-sulfonyl chloride) is 30 kg; the kettle liquid in the first reaction kettle 1 is cooled to 15 DEG C by opening the jacket coolant; after the kettle liquid is stable, the triethylamine solution in the second raw material tank 3 is added dropwise, and the temperature is controlled to be not more than 18 DEG C during the adding; after the adding is completed, the temperature is maintained at 12-16 DEG C; the stirring reaction is carried out for 3 hours; the temperature is increased to 25-30 DEG C; and the stirring is continued for 2 hours;

[0063] Acid precipitation reaction: 1000 L of water and 10 L of dilute hydrochloric acid solution are added into the third raw material tank 8 to form a dilute hydrochloric acid solution; after being stirred uniformly, the dilute hydrochloric acid solution is slowly added into the second reaction kettle 7 to react with the mixed solution in the first reaction kettle 1; after the reaction is qualified, the material is stirred uniformly, and the material is precipitated;

[0064] Centrifugal separation: the crystallized material in the second reaction kettle 7 is conveyed to the centrifuge 4 through a pipeline; wet products are obtained by centrifugal operation; and the centrifugal liquid is collected and used later;

[0065] Drying: the wet products are transferred into the drying machine 5; after drying at 40-50 DEG C, the products are detected and qualified, and are packaged;

[0066] Rectification separation: the waste gas after condensation in the drying process is distilled and purified together with the waste liquid generated by the condenser 63 and the centrifugal liquid; after distillation, acetone and triethylamine acetone solution are recovered and used for esterification reaction again;

[0067] Condensation adsorption: the uncondensed tail gas is adsorbed by the activated carbon adsorber 62, and then discharged through the exhaust pipe.

[0068] By the above system, the technical problem of waste of raw materials caused by directly discharging the tail gas and waste liquid generated by centrifugation and drying in the production process in the prior art can be solved.

[0069] The specific implementation mode of the utility model does not constitute the limitation of the protection scope of the utility model. Any various other corresponding changes and deformations made according to the technical concept of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A photosensitive resin production system, characterized in that, The application relates to a recovery system for recovering waste liquid and waste gas in a reaction system, comprising: a first reaction kettle; a first raw material tank and a second raw material tank, both of which are connected with the inside of the first reaction kettle; a centrifuge, which has a feeding end and a discharging end, and the feeding end is connected with the inside of the first reaction kettle; a drying machine connected with the discharging end of the centrifuge; and a recovery assembly comprising a rectifier, which has a feeding end and a discharging end, and the feeding end is connected with the waste liquid and waste gas outlets of the centrifuge or the drying machine, and the discharging end is connected with the first raw material tank and the second raw material tank. The first raw material tank and the second raw material tank are high-level tanks, and the first raw material tank and the second raw material tank are respectively used for injecting acetone solution and triethylamine solution into the first reaction kettle.

2. The photosensitive resin production system according to claim 1, characterized by The application further comprises a second reaction kettle and a third raw material tank, the second reaction kettle is arranged between the first reaction kettle and the centrifuge, the liquid inlet end of the second reaction kettle is connected with the liquid outlet end of the first reaction kettle, and the liquid outlet end is connected with the feeding end of the centrifuge, the third raw material tank is a high-level tank, and the inside of the third raw material tank is connected with the inside of the second reaction kettle, and is used for injecting dilute hydrochloric acid solution into the first reaction kettle.

3. The photosensitive resin production system according to claim 2, characterized by The discharging end of the rectifier comprises a first discharging sub-end and a second discharging sub-end, the first discharging sub-end of the rectifier is connected with the inside of the first raw material tank, and is used for recovering acetone solution, and the second discharging sub-end of the rectifier is connected with the inside of the second raw material tank, and is used for recovering triethylamine acetone solution.

4. The photosensitive resin production system according to claim 3, characterized by The discharging end of the rectifier further comprises a waste liquid sub-end, and the recovery assembly further comprises an activated carbon adsorber connected with the waste liquid sub-end of the rectifier.

5. The photosensitive resin production system according to claim 4, characterized by The drying machine has a feeding end, a discharging end for outputting products and an air outlet end, the feeding end of the drying machine is connected with the discharging end of the centrifuge, the recovery assembly further comprises a condenser, the condenser has an air inlet end and a first liquid outlet end, the air inlet end of the condenser is connected with the air outlet end of the drying machine, and the first liquid outlet end of the condenser is connected with the liquid inlet end of the rectifier.

6. The photosensitive resin production system according to claim 5, wherein The condenser further has a second liquid outlet end, and the second liquid outlet end of the condenser is connected with the activated carbon adsorber.

7. The photosensitive resin production system according to claim 6, wherein The application further comprises a fourth raw material tank and a fifth raw material tank, the inside of the fourth raw material tank and the fifth raw material tank is respectively connected with the inside of the first reaction kettle.

8. The photosensitive resin production system according to claim 3, characterized by The first reaction kettle and the second reaction kettle are respectively provided with stirring paddles, and the two stirring paddles can rotate relative to the first reaction kettle and the second reaction kettle respectively.

9. The photosensitive resin production system according to claim 3, characterized by The application further comprises two driving motors, the driving motors are arranged in one-to-one correspondence with the stirring paddles, the driving motors have fixed ends and output shafts, the fixed ends of the driving motors are connected with the first reaction kettle or the second reaction kettle, and the output shafts are connected with the stirring paddles.

10. The photosensitive resin production system according to claim 9, wherein ​

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