Reaction system for synthesizing and degrading PET (Polyethylene Terephthalate) catalyst

Abstract

The utility model discloses a reaction system for synthesizing and degrading a PET (Polyethylene Terephthalate) catalyst, which comprises a reaction kettle, the reaction kettle is communicated with a three-in-one filter through a pipeline, the three-in-one filter is communicated with a cleaning liquid recovery tank through a first magnetic filter, and the three-in-one filter is communicated with a solvent recovery tank through a second magnetic filter; the three-in-one filter is communicated with a condenser through a dust catcher, and the condenser is communicated with a cleaning liquid recovery tank and a solvent recovery tank. According to the utility model, the steps of reaction, filtration, washing, drying, solvent recovery and the like are integrated in one set of reaction system, so that the links of material transfer and the like are reduced, the product exposure time is shortened, the pollution risk is reduced, and the reaction efficiency is effectively improved; the filtering precision can be remarkably improved through the magnetic filter, a penetrating and filtering catalyst is prevented from entering the recycling storage tank, liquid pollution such as a recycled solvent and equipment damage are avoided, and therefore the product quality and yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solvent recovery equipment, in particular to a PET synthesis and degradation catalyst reaction system. Background Art

[0002] Synthesizing catalysts for the degradation of PET (polyethylene terephthalate) is a key research area for plastics recycling and environmental protection. PET is currently widely used in packaging and textiles, but its degradation time is extremely long, necessitating the development of effective catalysts to accelerate its degradation. Chemical reaction processes typically require multiple steps, including reaction, filtration, washing, drying, and solvent recovery. These steps often need to be performed in separate equipment, increasing equipment complexity and easily leading to product contamination during transfer, impacting product quality. Integrating these multiple steps into a single reactor can reduce transfer steps, lowering the risk of product contamination and improving production efficiency.

[0003] First, although the three-in-one filter in the existing integrated reaction system can prevent some catalysts from entering the recovery tank, there may be a problem of insufficient filtration accuracy, resulting in some small particles that pass through the filter still being able to enter the recovery tank, thereby affecting the purity of the recovered solvent; and there are problems such as low recovery efficiency and excessive energy consumption during solvent recovery, which not only increases production costs but may also cause environmental pollution. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems and provide a catalyst reaction system for synthesizing and degrading PET.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions, including:

[0006] A reactor, wherein the reactor is connected to a three-in-one filter through a pipeline, the three-in-one filter is connected to a cleaning liquid recovery tank through a first magnetic filter, and the three-in-one filter is connected to a solvent recovery tank through a second magnetic filter;

[0007] The three-in-one filter is communicated with a condenser through a dust collector, and the condenser is communicated with the cleaning liquid recovery tank and the solvent recovery tank.

[0008] As a further description of the above technical solution, feed ports are symmetrically arranged on both sides of one side of the top of the reactor, and the reactor is connected to the cleaning liquid storage tank and the solvent storage tank respectively through the feed ports. A discharge port is arranged at the bottom of the reactor, and the reactor is connected to the three-in-one filter through the discharge port.

[0009] As a further description of the above technical solution, a heating jacket is provided on the outside of the three-in-one filter, and a filter cake and a stirring paddle are provided inside the reactor.

[0010] As a further description of the above technical solution, a feed port is provided on one side of the top of the three-in-one filter, and the three-in-one filter is connected to the reactor through the feed port.

[0011] As a further description of the above technical solution, a discharge port is provided on the other side of the top of the three-in-one filter, and the three-in-one filter is connected to the dust collector through the discharge port.

[0012] As a further description of the above technical solution, a discharge port is provided on one side of the bottom of the three-in-one filter, and an air inlet is provided on one side of the top of the three-in-one filter.

[0013] As a further description of the above technical solution, a feed port is provided on one side of the dust collector, and the dust collector is connected to the three-in-one filter through the feed port.

[0014] As a further description of the above technical solution, a discharge port is provided on the other side of the dust collector, and the dust collector is connected to the condenser through the discharge port.

[0015] As a further description of the above technical solution, a feed port is provided on one side of the condenser, and the condenser is connected to the dust collector through the feed port.

[0016] As a further description of the above technical solution, a discharge port is provided at the bottom of the condenser, and the condenser is connected to the cleaning liquid recovery tank and the solvent recovery tank through the discharge port.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. This utility model integrates the steps of reaction, filtration, washing, drying, solvent recovery, etc. into a set of reaction systems, which reduces the material transfer process, reduces the product exposure time, reduces the risk of contamination, and effectively improves the reaction efficiency;

[0019] 2. The utility model can significantly improve the filtration accuracy by adsorbing the magnetic nanoparticle catalyst through the magnetic filter, prevent the catalyst from entering the recovery tank, avoid the contamination of liquids such as the recovery solvent and damage to the equipment, thereby improving the quality and output of the product;

[0020] 3. The utility model can improve the solvent recovery efficiency and reduce energy consumption by optimizing the solvent recovery process and equipment, thereby reducing production costs and also reducing pollution to the environment.

[0021] In order to more clearly illustrate the structural features and functions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a reaction system for synthesizing and degrading PET catalysts of the utility model.

[0023] Reference numerals:

[0024] 1. Reactor; 2. Three-in-one filter; 3. First magnetic filter; 4. Second magnetic filter; 5. Cleaning liquid recovery tank; 6. Cleaning liquid storage tank; 7. Solvent recovery tank; 8. Solvent storage tank; 9. Dust collector; 10. Condenser; 11. Heating jacket; 12. Filter cake; 13. Stirring paddle. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] like Figure 1 As shown, in one embodiment, a reaction system for synthesizing and degrading PET catalyst includes: a reactor 1, a three-in-one filter 2, a first magnetic filter 3, a second magnetic filter 4, a cleaning liquid recovery tank 5, a cleaning liquid storage tank 6, a solvent recovery tank 7, a solvent storage tank 8, a dust collector 9 and a condenser 10.

[0027] By adding a magnetic filter and a recovery tank, the reaction, filtration, washing, drying and recovery steps can be completed in a closed system, reducing the exposure time of the reaction products to the external environment and greatly reducing the risk of product contamination. In particular, the magnetic filter added to the pipeline has a strong adsorption effect on the magnetic nanoparticle catalyst. The filtered part is adsorbed on the magnetic filter when flowing through the pipeline, which not only ensures the purity of the recovered solvent and cleaning fluid, but also protects equipment such as valves and centrifugal pumps from damage, saving a lot of production costs.

[0028] Among them, the reactor 1 is connected to the three-in-one filter 2 through a pipeline, the three-in-one filter 2 is connected to the cleaning liquid recovery tank 5 through the first magnetic filter 3, and the three-in-one filter 2 is connected to the solvent recovery tank 7 through the second magnetic filter 4; in addition, the three-in-one filter 2 is connected to the condenser 10 through the dust collector 9, and the condenser 10 is connected to the cleaning liquid recovery tank 5 and the solvent recovery tank 7.

[0029] Please continue reading Figure 1In this embodiment, the reactor 1 is provided with two feed ports and one discharge port, the three-in-one filter 2 is provided with one feed port and two discharge ports, and the cleaning liquid recovery tank 5 and the solvent recovery tank 7 are provided with one feed port and one discharge port.

[0030] Specifically, feed ports are symmetrically provided on both sides of one side of the top of the reactor 1, and the reactor 1 is connected to the cleaning liquid storage tank 6 and the solvent storage tank 8 through the feed ports. A discharge port is provided at the bottom of the reactor 1, and the reactor 1 is connected to the three-in-one filter 2 through the discharge port. A feed port is provided on one side of the top of the three-in-one filter 2, and the three-in-one filter 2 is connected to the reactor 1 through the feed port; a discharge port is provided on the other side of the top of the three-in-one filter 2, and the three-in-one filter 2 is connected to the dust collector 9 through the discharge port.

[0031] Furthermore, a heating jacket 11 is provided on the outside of the three-in-one filter 2 for heating and keeping warm during filtration. A filter cake 12 and a stirring paddle 13 are provided inside the reactor 1 for filtering and heating and drying. A discharge port is also provided on one side of the bottom of the three-in-one filter 2 for recovering the filter material after filtration. An air inlet is also provided on one side of the top of the three-in-one filter 2 for introducing high-temperature gas, which can not only speed up the filtration rate, but also improve the drying efficiency by introducing high-temperature gas during drying, thus saving a lot of time and cost in the production process.

[0032] Furthermore, two magnetic filters are respectively installed on the recovery pipelines connecting the three-in-one filter 2 with the cleaning liquid recovery tank 5 and the solvent recovery tank 7.

[0033] Specifically, the first and second magnetic filters 3 and 4 are made of high-strength magnetic material and are cylindrical in shape to increase the filter surface area. By improving the design and materials of the magnetic filters, filtration accuracy can be significantly improved, ensuring that only trace amounts of catalyst particles enter the recovery tank, thereby increasing the purity of the recovered solvent.

[0034] Furthermore, a feed port is provided on one side of the dust collector 9, which communicates with the three-in-one filter 2 through the feed port. A discharge port is provided on the other side of the dust collector 9, which communicates with the condenser 10 through the discharge port. A feed port is provided on one side of the condenser 10, which communicates with the dust collector 9 through the feed port. A discharge port is provided at the bottom of the condenser 10, which communicates with the cleaning liquid recovery tank 5 and the solvent recovery tank 7 through the discharge port.

[0035] The dust collector 9 can effectively prevent the product powder from being blown into the condenser 10 and the recovery tank when recovering the solvent or cleaning liquid, thereby avoiding equipment pollution and impure recovered products; and the condenser 10 can recover the solvent and cleaning liquid evaporated during the reaction, thereby preventing some chemicals from being released into the environment, saving production costs and not causing environmental pollution.

[0036] Working principle: the raw materials react in the reactor 1. After the reaction is completed, the valve is opened and the material enters the three-in-one filter 2 for filtration through the filter cake 12. The three-in-one filter 2 is pressurized by passing gas through the air inlet to speed up the filtration rate. After the filtration is completed, the solid is dried in the filter, and the stirring paddle 13 is opened and high-temperature gas is blown inward. The evaporated solvent vapor passes through the dust collector 9 and then enters the condenser 10 to be recovered to the solvent storage tank 8. After the recovery is completed, the inner wall of the reactor 1 is rinsed with cleaning liquid, and the rinsed liquid is passed into the three-in-one filter 2 to clean the filter cake 12. After the end, continue drying, and at the same time, pass high-temperature gas inward through the air inlet and open the stirring paddle 13. The volatilized cleaning liquid is recovered to the cleaning liquid storage tank 6 by condensation. The solvent and cleaning liquid in the filtration process pass through the filter screen and then through the magnetic filter to obtain a pure recovered product.

[0037] Through the above technical solution, the present application integrates the steps of reaction, filtration, washing, drying, solvent recovery, etc. into a set of reaction systems. By completing multiple steps in one reactor, the complexity of the equipment is reduced, the material transfer process is eliminated, the product exposure time is reduced, the risk of contamination is reduced, and the reaction efficiency is effectively improved, thereby improving the quality and yield of the product.

[0038] By using a magnetic filter to adsorb the magnetic nanoparticle catalyst, the filtration accuracy can be significantly improved, and the catalyst that passes through the filter can be prevented from entering the recovery tank, thereby avoiding contamination of liquids such as the recovery solvent and damage to the equipment, thereby improving the quality and yield of the product. Compared with the existing technology, the magnetic filter of the present application has higher filtration accuracy and can effectively adsorb small particles of catalyst, thereby ensuring the purity of the recovered solvent.

[0039] The reaction system integrates solvent recovery technology. By optimizing the solvent recovery process, the solvent recovery efficiency is improved, energy consumption is reduced, thereby reducing production costs and environmental pollution.

[0040] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PET synthesis and degradation catalyst reaction system, characterized in that: include: A reactor (1), wherein the reactor (1) is connected to a three-in-one filter (2) via a pipeline, the three-in-one filter (2) is connected to a cleaning liquid recovery tank (5) via a first magnetic filter (3), and the three-in-one filter (2) is connected to a solvent recovery tank (7) via a second magnetic filter (4); The three-in-one filter (2) is connected to a condenser (10) via a dust collector (9), and the condenser (10) is connected to the cleaning liquid recovery tank (5) and the solvent recovery tank (7).

2. The synthetic and degradable PET catalyst reaction system according to claim 1, characterized in that: Feed ports are symmetrically provided on both sides of one side of the top of the reactor (1), and the reactor (1) is connected to the cleaning liquid storage tank (6) and the solvent storage tank (8) respectively through the feed ports. A discharge port is provided at the bottom of the reactor (1), and the reactor (1) is connected to the three-in-one filter (2) through the discharge port.

3. The synthetic and degradable PET catalyst reaction system according to claim 1, characterized in that: A heating jacket (11) is provided on the outside of the three-in-one filter (2), and a filter cake (12) and a stirring paddle (13) are provided inside the reactor (1).

4. The synthetic and degradable PET catalyst reaction system according to claim 3, characterized in that: A feed port is provided on one side of the top of the three-in-one filter (2), and the three-in-one filter (2) is connected to the reactor (1) through the feed port.

5. The synthesis and degradation PET catalyst reaction system according to claim 3, characterized in that: A discharge port is provided on the other side of the top of the three-in-one filter (2), and the three-in-one filter (2) is connected to the dust collector (9) through the discharge port.

6. The synthesis and degradation PET catalyst reaction system according to claim 3, characterized in that: A discharge port is provided on one side of the bottom of the three-in-one filter (2), and an air inlet is provided on one side of the top of the three-in-one filter (2).

7. The synthesis and degradation PET catalyst reaction system according to claim 1, characterized in that: A feed port is provided on one side of the dust collector (9), and the dust collector (9) is connected to the three-in-one filter (2) through the feed port.

8. The PET synthesis and degradation catalyst reaction system according to claim 1, characterized in that: A discharge port is provided on the other side of the dust collector (9), and the dust collector (9) is connected to the condenser (10) through the discharge port.

9. The PET synthesis and degradation catalyst reaction system according to claim 8, characterized in that: A feed port is provided on one side of the condenser (10), and the condenser (10) is connected to the dust collector (9) through the feed port.

10. The PET synthesis and degradation catalyst reaction system according to claim 9, characterized in that: A discharge port is provided at the bottom of the condenser (10), and the condenser (10) is connected to the cleaning liquid recovery tank (5) and the solvent recovery tank (7) through the discharge port.

Images