Corrosion-resistant PEEK filler material for rectifying tower as well as production method and application of corrosion-resistant PEEK filler material

Abstract

The invention discloses a corrosion-resistant PEEK filler material for a rectifying tower and a production method and application of the corrosion-resistant PEEK filler material, and relates to the technical field of engineering plastic production, the production method of the corrosion-resistant PEEK filler material for the rectifying tower comprises the following steps: step 1, preparing a flame retardant; step 2, preparing an antioxidant; 3, high-temperature mixing treatment; step 4, banburying treatment; the workblank engineering plastic is added into a screw extruder to be melted and extruded, the PEEK material is obtained, and the first step comprises the following steps that A1, 26 w% of phenyl phosphorus dichloride, 25 w% of calcined kaolin and 12 w% of m-xylylenediamine are jointly dissolved in a solvent; through the design of the step A1 and the step A2, the flame retardant can be prepared, and in the high-temperature mixing treatment process, the flame retardant is fused into the PEEK filler material, so that the PEEK filler material has relatively good flame retardance, the problem of further spreading of fire can be avoided when a fire disaster occurs, and the property safety of a user is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of engineering plastic production, and in particular to a corrosion-resistant PEEK filler material for a distillation tower and a production method and application thereof. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device for distillation. It uses the different volatilities of the components in the mixture, that is, the different vapor pressures of the components at the same temperature, to transfer the light components in the liquid phase to the gas phase, and the heavy components in the gas phase to the liquid phase, thereby achieving the purpose of separation. The distillation tower is also a widely used mass transfer and heat transfer device in petrochemical production. The plate distillation tower is a widely used gas-liquid mass transfer equipment. It consists of a usually cylindrical shell and a number of tower plates arranged horizontally at a certain interval. When the plate tower works normally, the liquid passes through each layer of the tower plate from top to bottom under the action of gravity and is discharged from the bottom of the tower. The gas is driven by the pressure difference and passes through each layer of the tower plate from bottom to top through the openings evenly distributed on the tower plate and is discharged from the top of the tower. A certain amount of liquid is stored on each tower plate. When the gas passes through the liquid layer on the plate, the two phases contact for mass transfer. PEEK polyetheretherketone is a special engineering plastic with excellent properties such as high temperature resistance, self-lubrication, easy processing and high mechanical strength. It can be manufactured and processed into various mechanical parts, such as automobile gears, oil screens, shift starter plates, aircraft engine parts, automatic washing machine wheels, medical equipment parts, etc. In actual use, the distillation tower will work with the help of PEEK filler materials.

[0003] A Chinese patent discloses a process for producing raw materials of modified engineering plastic particles, with the publication number CN112045886A. The technical solution disclosed in the patent document is as follows: Step 1: Equipment inspection: Before the modified engineering plastic particle cooling device is activated to cool the modified engineering plastic particles, the operation of the equipment is checked; Step 2: Manual loading: The modified engineering plastic particles that need to be cooled are manually poured into the feed pipe, thereby completing the purpose of manual loading; Step 3: Cooling and grinding: After completing the manual loading operation in step 2, the modified engineering plastic particles roll along the material holding plate, and at the same time, the No. 2 motor works, and through the driving cam, the cooling plate is driven to continuously squeeze the modified engineering plastic particles rolling on the material holding plate, thereby achieving the purpose of cooling and grinding.

[0004] In order to solve the problem that when the amount of modified engineering plastics is too large, the engineering plastics are often not sufficiently cooled, the prior art uses structures such as condensation boxes and cooling kits to fully cool the engineering plastics. However, the flame retardancy is poor. If a fire occurs accidentally, the engineering plastic particles will quickly convert into combustion-supporting materials, causing the fire to spread further, thereby causing greater property losses to users. Summary of the invention

[0005] The present invention provides a corrosion-resistant PEEK filler material for a distillation tower and a production method and application thereof, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] In a first aspect, the present invention provides a method for producing a corrosion-resistant PEEK packing material for a distillation tower, the method for producing a corrosion-resistant PEEK packing material for a distillation tower comprising the following steps:

[0008] Step 1, preparation of flame retardant;

[0009] Step 2, preparation of antioxidant;

[0010] Step 3: high temperature mixing treatment;

[0011] Step 4: Mixing treatment;

[0012] Step 5: Forming process: Add the raw engineering plastic to the screw extruder for melting and extrusion to obtain PEEK material.

[0013] A further improvement of the technical solution of the present invention is that the step 1 includes the following steps:

[0014] Step A1, firstly, 26w% of phenylphosphonium dichloride, 25w% of calcined kaolin and 12w% of meta-xylylenediamine are dissolved in a solvent, wherein the solvent is distilled water, to obtain a flame retardant solution, and then nitrogen is introduced into the interior of the flame retardant solution, and then 26w% of aluminum hydroxide and 11w% of zinc borate are added into the interior of the flame retardant solution;

[0015] Step A2, after standing for 2 hours, heat the solution at a temperature of 60±5° C. to evaporate the water inside the solution to obtain a flame retardant solid material, then break the flame retardant solid material into pieces, and evenly mix red phosphorus powder according to 20% weight of the flame retardant solid material to obtain a flame retardant.

[0016] A further improvement of the technical solution of the present invention is that the step 2 includes the following steps: putting styrenated phenol into a steel container, then putting the steel container into a vacuum heating furnace, controlling the vacuum heating furnace to be evacuated to below 8 Pa, and at the same time controlling the heating temperature of the vacuum heating furnace to 250°C-260°C, keeping warm for 15 minutes, cooling the steel container by a quenching method, and taking it out to obtain the antioxidant.

[0017] A further improvement of the technical solution of the present invention is that the step three includes the following steps: adding the raw materials used to the interior of a high-temperature mixer, setting the mixing temperature to 152±3°C, and controlling the mixing time to be more than 1.5h to obtain a mixture, wherein the raw materials used are set to 33w% polyester resin, 16w% polyphenylene sulfide, 15w% polyethylene, 10w% ceramic powder, 9w% polysebamide, 6w% polyvinyl chloride, 2w% silicon-containing flame retardant, 2w% antioxidant, 3w% plasticizer, and 4w% flame retardant.

[0018] The further improvement of the technical solution of the present invention is that the step four includes the following steps: adding the obtained mixture into an internal mixer for internal mixing at a temperature of 150-160° C. for a time of 30 minutes to obtain a blank engineering plastic.

[0019] In a second aspect, the present invention further provides an application of a corrosion-resistant PEEK packing material for a distillation tower, wherein the application of the corrosion-resistant PEEK packing material for a distillation tower comprises the following steps:

[0020] S1. Use as distillation tower filler: directly crush the PEEK material with the help of a crushing device to obtain a PEEK filler material, and then directly collect and use the PEEK filler material;

[0021] S2. Used as raw material for workpieces.

[0022] Furthermore, S2 includes the following steps:

[0023] S21, workpiece forming processing;

[0024] S22: etching processing.

[0025] Furthermore, the S21 includes the following steps: firstly crush the PEEK material, and then pass it through a 3 mm diameter sieve to obtain PEEK particles, and produce the required mold in advance, and then add the PEEK particles to the inside of the injection molding machine. The injection molding machine can inject the molten PEEK particles into the inside of the mold, and after the material inside the mold is naturally cooled, the workpiece made of the PEEK material can be taken out.

[0026] Furthermore, S22 includes the following steps: using an etching solution to chemically etch a workpiece made of PEEK material, the etching time is 12 minutes, the etching temperature is 40±5°C, each liter of etching solution is composed of the following components: NaPS 100-120g / L, benzene 30-35g / L, sodium tetrahydrofuran 26-36g / L and sulfuric acid 80-90ml / L, and rinsing with clean water for 3 minutes after the chemical etching is completed.

[0027] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0028] 1. The present invention provides a corrosion-resistant PEEK filler material for a distillation tower, a production method and an application thereof. Through the design of step A1 and step A2, a flame retardant can be prepared, and during the high-temperature mixing process, the flame retardant is integrated into the interior of the PEEK filler material, so that the PEEK filler material has good flame retardant properties. In the event of a fire, the further spread of the fire can be avoided, thereby ensuring the property safety of users and improving the reliability of the method.

[0029] 2. The present invention provides a corrosion-resistant PEEK filler material for a distillation tower, and a production method and application thereof. Through the design of step two, an antioxidant can be prepared. At the same time, during the high-temperature mixing process, the antioxidant can be integrated into the interior of the PEEK filler material to form an antioxidant structure on the PEEK filler material, so that the PEEK filler material has antioxidant properties, preventing oxygen from having an adverse effect on the PEEK filler material, and extending the service life of the PEEK filler material in a natural environment.

[0030] 3. The present invention provides a corrosion-resistant PEEK filler material for a distillation tower, a production method and an application thereof. By using an etching solution to chemically etch a workpiece made of PEEK material, the etching time is 12 minutes, the etching temperature is 40±5°C, and each liter of etching solution is composed of the following components: NaPS 100-120 g / L, benzene 30-35 g / L, sodium tetrahydrofuran 26-36 g / L and sulfuric acid 80-90 ml / L, the outer surface impurities of the workpiece made of PEEK material can be removed, and a protective layer is formed on the outer surface of the workpiece made of PEEK material, thereby extending the life of the workpiece and improving the quality of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flowchart of the method for producing PEEK filler material of the present invention;

[0032] Figure 2 It is a flowchart of the application of the PEEK filler material of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with embodiments:

[0034] Example 1

[0035] First, as Figure 1-2 As shown, the present invention provides a method for producing a corrosion-resistant PEEK packing material for a distillation tower, and the method for producing a corrosion-resistant PEEK packing material for a distillation tower comprises the following steps:

[0036] Step 1, preparation of flame retardant;

[0037] Step 2: Preparation of antioxidant, specifically:

[0038] Styrenated phenol is put into a steel container, and then the steel container is put into a vacuum heating furnace, and the vacuum heating furnace is controlled to be evacuated to below 8Pa, and the heating temperature of the vacuum heating furnace is controlled to be 250℃-260℃, and the temperature is kept for 15 minutes. The steel container is cooled by a quenching method, and the antioxidant can be obtained by taking it out. The antioxidant can be prepared by the design of step 2. At the same time, during the high-temperature mixing process, the antioxidant can be integrated into the interior of the PEEK filler material to form an antioxidant structure on the PEEK filler material, so that the PEEK filler material has antioxidant properties, preventing oxygen from having adverse effects on the PEEK filler material, and extending the service life of the PEEK filler material in a natural environment;

[0039] Step 3: high temperature mixing treatment, specifically:

[0040] Add the raw materials used into the interior of a high-temperature mixer, set the mixing temperature to 152±3°C, and control the mixing time to be more than 1.5h to obtain a mixture, wherein the raw materials used are set to be 33w% polyester resin, 16w% polyphenylene sulfide, 15w% polyethylene, 10w% ceramic powder, 9w% polysebamide, 6w% polyvinyl chloride, 2w% silicon-containing flame retardant, 2w% antioxidant, 3w% plasticizer, and 4w% flame retardant;

[0041] Step 4: Mixing treatment, specifically:

[0042] The obtained mixture is added to an internal mixer for internal mixing at a temperature of 150-160° C. for 30 minutes to obtain a rough engineering plastic. The sufficient fusion of the raw materials used is improved by adding the obtained mixture to the internal mixer for internal mixing, thereby increasing the quality of the PEEK material.

[0043] Step 5: Forming process: Add the raw engineering plastic to the screw extruder for melting and extrusion to obtain PEEK material.

[0044] Example 2

[0045] like Figure 1-2 As shown, based on Example 2, the present invention provides a technical solution: preferably, step one includes the following steps:

[0046] Step A1, firstly, 26w% of phenylphosphonium dichloride, 25w% of calcined kaolin and 12w% of meta-xylylenediamine are dissolved in a solvent, wherein the solvent is distilled water, to obtain a flame retardant solution, and then nitrogen is introduced into the interior of the flame retardant solution, and then 26w% of aluminum hydroxide and 11w% of zinc borate are added into the interior of the flame retardant solution;

[0047] Step A2, after standing for 2 hours, heat the solution at a temperature of 60±5°C, evaporate the water inside the solution to obtain a flame retardant solid material, then break the flame retardant solid material, and evenly mix red phosphorus powder according to 20% weight of the flame retardant solid material to obtain a flame retardant. Through the design of steps A1 and A2, a flame retardant can be prepared, and during the high-temperature mixing process, the flame retardant is integrated into the interior of the PEEK filler material, so that the PEEK filler material has better flame retardant properties. In the event of a fire, the problem of further spread of the fire can be avoided, the property safety of the user is guaranteed, and the reliability of the method is improved.

[0048] Example 3

[0049] Second, as Figure 1-2 As shown, the present invention also provides an application of a corrosion-resistant PEEK filler material for a distillation tower, and the application of the corrosion-resistant PEEK filler material for a distillation tower comprises the following steps:

[0050] S1. Use as distillation tower filler: directly crush the PEEK material with the help of a crushing device to obtain a PEEK filler material, and then directly collect and use the PEEK filler material. Use a container to collect the PEEK filler material. After collection, the PEEK filler material can be circulated by a cart;

[0051] S2. Used as raw material for workpieces.

[0052] Example 4

[0053] like Figure 1-2 As shown, based on Example 3, the present invention provides a technical solution: Preferably, S2 includes the following steps:

[0054] S21, workpiece forming processing, specifically:

[0055] First, the PEEK material is crushed and passed through a 3mm diameter screen to obtain PEEK particles. The required mold is produced in advance, and then the PEEK particles are added to the injection molding machine. The injection molding machine can inject the molten PEEK particles into the mold. After the material in the mold cools naturally, the workpiece made of the PEEK material can be taken out. The design of passing through a 3mm diameter screen after crushing can avoid the problem of large particles of PEEK material causing blockage in the injection molding machine;

[0056] S22, etching processing, specifically: using an etching solution to chemically etch the workpiece made of PEEK material, the etching time is 12 minutes, the etching temperature is 40±5°C, each liter of etching solution is composed of the following components: NaPS 100-120g / L, benzene 30-35g / L, sodium tetrahydrofuran 26-36g / L and sulfuric acid 80-90ml / L, rinse with clean water for 3 minutes after the chemical etching is completed. By using the etching solution to chemically etch the workpiece made of PEEK material, impurities on the outer surface of the workpiece made of PEEK material can be removed, and a protective layer can be formed on the outer surface of the workpiece made of PEEK material, thereby extending the life of the workpiece and improving the quality of the workpiece. By rinsing with clean water for 3 minutes after the chemical etching is completed, the residual solution and impurities on the outer surface of the workpiece can be removed.

[0057] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A method for producing a corrosion-resistant PEEK packing material for a distillation tower, characterized in that: The production method of the corrosion-resistant PEEK filler material for a distillation tower comprises the following steps: Step 1, preparation of flame retardant; Step 2, preparation of antioxidant; Step 3: high temperature mixing treatment; Step 4: Mixing treatment; Step 5: Forming process: Add the raw engineering plastic to the screw extruder for melting and extrusion to obtain PEEK material.

2. The method for producing a corrosion-resistant PEEK packing material for a distillation tower according to claim 1, characterized in that: The step one includes the following steps: Step A1, firstly, 26w% of phenylphosphonium dichloride, 25w% of calcined kaolin and 12w% of meta-xylylenediamine are dissolved in a solvent, wherein the solvent is distilled water, to obtain a flame retardant solution, and then nitrogen is introduced into the interior of the flame retardant solution, and then 26w% of aluminum hydroxide and 11w% of zinc borate are added into the interior of the flame retardant solution; Step A2, after standing for 2 hours, heat the solution at a temperature of 60±5° C. to evaporate the water inside the solution to obtain a flame retardant solid material, then break the flame retardant solid material into pieces, and evenly mix red phosphorus powder according to 20% weight of the flame retardant solid material to obtain a flame retardant.

3. The method for producing a corrosion-resistant PEEK packing material for a distillation tower according to claim 1, characterized in that: The step 2 includes the following steps: loading styrenated phenol into a steel container, placing the steel container into a vacuum heating furnace, controlling the vacuum heating furnace to be evacuated to below 8 Pa, and controlling the heating temperature of the vacuum heating furnace to 250° C.-260° C., keeping the temperature for 15 minutes, cooling the steel container by a quenching method, and taking it out to obtain the antioxidant.

4. The method for producing a corrosion-resistant PEEK packing material for a distillation tower according to claim 1, characterized in that: The step three includes the following steps: adding the raw materials used into the interior of a high-temperature mixer, setting the mixing temperature to 152±3°C, and controlling the mixing time to be more than 1.5 hours to obtain a mixture, wherein the raw materials used are set to 33w% polyester resin, 16w% polyphenylene sulfide, 15w% polyethylene, 10w% ceramic powder, 9w% polysebamide, 6w% polyvinyl chloride, 2w% silicon-containing flame retardant, 2w% antioxidant, 3w% plasticizer, and 4w% flame retardant.

5. The method for producing a corrosion-resistant PEEK packing material for a distillation tower according to claim 1, characterized in that: The step 4 comprises the following steps: adding the obtained mixture into an internal mixer for internal mixing at a temperature of 150-160° C. for a time of 30 minutes to obtain a rough engineering plastic.

6. A corrosion-resistant PEEK packing material for a distillation tower, characterized in that: The product is prepared by the production method as described in any one of claims 1 to 5.

7. An application of a corrosion-resistant PEEK packing material for a distillation tower, which is realized based on the production method of a corrosion-resistant PEEK packing material for a distillation tower according to claims 1 to 5, characterized in that: The application of the corrosion-resistant PEEK packing material for the distillation tower includes the following steps: S1. Use as distillation tower filler: directly crush the PEEK material with the help of a crushing device to obtain a PEEK filler material, and then directly collect and use the PEEK filler material; S2. Used as raw material for workpieces.

8. The use of a corrosion-resistant PEEK packing material for a distillation tower according to claim 7, characterized in that: The S2 includes the following steps: S21, workpiece forming processing; S22: etching processing.

9. The use of a corrosion-resistant PEEK packing material for a distillation tower according to claim 8, characterized in that: The S21 includes the following steps: firstly crush the PEEK material, and then pass it through a 3mm diameter sieve to obtain PEEK particles, and produce the required mold in advance, and then add the PEEK particles into the injection molding machine. The injection molding machine can inject the molten PEEK particles into the mold. After the material inside the mold cools down naturally, the workpiece made of the PEEK material can be taken out.

10. The use of a corrosion-resistant PEEK packing material for a distillation tower according to claim 8, characterized in that: The S22 includes the following steps: using an etching solution to chemically etch a workpiece made of PEEK material, the etching time is 12 minutes, the etching temperature is 40±5°C, each liter of the etching solution is composed of the following components: NaPS 100-120g / L, benzene 30-35g / L, sodium tetrahydrofuran 26-36g / L and sulfuric acid 80-90ml / L, and rinsing with clean water for 3 minutes after the chemical etching is completed.

Images