Environment-friendly production device for phenolic resin adhesive

By using nitrogen filling port and condenser reflux technology in the phenolic resin adhesive production device, the problem of untimely discharge of reactants is solved, the product quality and environmental protection are improved, and the waste heat of steam is used to achieve energy-saving effects.

CN119236842AInactive Publication Date: 2025-01-03李荣伟
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Patent Information

Application Number
CN202411281663.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-12
Publication Date
2025-01-03
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The reactants evaporated from the phenolic resin adhesive in the reactor are not discharged and refluxed in time, affecting the production quality.

Method used

An environmentally friendly production device for phenolic resin adhesive was designed. The nitrogen filling port on the reactor was used to bring the volatiles into the condenser and then reflux them into the reactor, and processed through a condenser, a steam separator and filtration, using steam Heat the waste heat to ensure raw material ratio and reduce pollution.

Benefits of technology

It improves the yield and quality of phenolic resin adhesives, reduces environmental pollution, and realizes an energy-saving and environmentally friendly production process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The environment-friendly phenolic resin adhesive production device comprises a reaction kettle, a stirring assembly is arranged in the reaction kettle, a cooling coil and a steam heating coil are arranged on the kettle wall of the reaction kettle, and a nitrogen charging opening is formed in the side wall of the reaction kettle; the formaldehyde storage tank is used for storing formaldehyde, the formaldehyde storage tank is connected with the reaction kettle through a first pipeline, and a first conveying pump is arranged on the first pipeline; the adhesive storage tank is used for storing an adhesive, the adhesive storage tank is connected with the reaction kettle through a second pipeline, and a second delivery pump is arranged on the second pipeline; the caustic soda storage tank is used for storing caustic soda, the caustic soda storage tank is connected with the reaction kettle through a third pipeline, and a third delivery pump is arranged on the third pipeline; and the phenol storage tank is used for storing phenol. Compared with the prior art, the problem that the production quality of the phenolic resin adhesive is easily affected as reactants volatilized from the reaction kettle are not discharged and flow back into the reaction kettle in time can be solved.
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Description

Technical Field

[0001] The invention relates to the technical field of adhesive production equipment, and in particular to an environmentally friendly production device for a phenolic resin adhesive. Background Art

[0002] Phenolic resin is abbreviated as PF. It is widely used in the wood industry because of its high bonding strength, water resistance, heat resistance, chemical resistance and other advantages. Phenolic resin adhesives have great development potential in my country. We should actively conduct further research on the production principle, process and equipment of phenolic resin for adhesives in order to further large-scale and industrialized production.

[0003] At present, when phenolic resin adhesive is produced in a reactor, steam and volatilized reactants will evaporate from the reaction liquid in the reactor. If the steam and volatilized reactants are not discharged and refluxed into the reactor in time, the production quality of the phenolic resin adhesive will be easily affected. Summary of the invention

[0004] The purpose of the present invention is to provide an environmentally friendly production device for phenolic resin adhesive in order to solve the problem that the reactants volatilized in the reactor are not discharged in time and flow back into the reactor, which easily affects the production quality of phenolic resin adhesive.

[0005] In order to achieve the above object, the present invention provides an environmentally friendly production device for a phenolic resin adhesive, which comprises:

[0006] A reactor, wherein a stirring assembly is arranged in the reactor, a cooling coil and a steam heating coil are arranged on the reactor wall of the reactor, and a nitrogen filling port is arranged on the side wall of the reactor;

[0007] A formaldehyde storage tank, the formaldehyde storage tank is used to store formaldehyde, the formaldehyde storage tank is connected to the reactor through a first pipeline, and a first delivery pump is provided on the first pipeline;

[0008] An adhesive storage tank, the adhesive storage tank is used to store adhesive, the adhesive storage tank is connected to the reactor via a second pipeline, and a second delivery pump is provided on the second pipeline;

[0009] A caustic soda storage tank, the caustic soda storage tank is used to store caustic soda, the caustic soda storage tank is connected to the reactor through a third pipeline, and a third delivery pump is provided on the third pipeline;

[0010] A phenol storage tank, the phenol storage tank is used to store phenol, the phenol storage tank is connected to the reactor via a fourth pipeline, and a fourth delivery pump is provided on the fourth pipeline;

[0011] A condenser, one end of the condenser is connected to the top of the reactor through a fifth pipe, the other end of the condenser is connected to the side wall of the condenser through a sixth pipe, and the condenser is connected to the wastewater treatment component through a seventh water pipe.

[0012] As a further description of the above technical solution:

[0013] The wastewater treatment component includes a water storage tank and a steam-water separator, the steam-water separator is connected to the condenser through a seventh water pipe, the water storage tank is connected to the steam-water separator through an eighth water pipe, and the water outlet of the water storage tank is connected to the steam heating coil through a ninth water pipe.

[0014] As a further description of the above technical solution:

[0015] A filtering component is arranged in the water storage tank.

[0016] As a further description of the above technical solution:

[0017] The filter component is an activated carbon filter layer.

[0018] As a further description of the above technical solution:

[0019] The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline and the ninth pipeline are all provided with solenoid valves.

[0020] As a further description of the above technical solution:

[0021] The reactor is a double-layer reactor, and the cooling coil and the steam heating coil are arranged in the gap between the double-layer reactor.

[0022] As a further description of the above technical solution:

[0023] The third pipe includes an outer pipe and an inner pipe. The inner pipe is embedded in the outer pipe. The inner pipe is made of plastic. The inner pipe is detachably connected to the inner pipe via a connecting component.

[0024] As a further description of the above technical solution:

[0025] The connecting component includes a first connecting column, a second connecting column and a rope, the first connecting column and the second connecting column are respectively connected to the two ends of the outer tube, the rope is arranged along the length direction of the inner tube, and the opposite ends of the rope are respectively connected to the first connecting column and the second connecting column.

[0026] As a further description of the above technical solution:

[0027] The formaldehyde storage tank, the adhesive storage tank, the caustic soda storage tank, and the phenol storage tank are all provided with weighing instruments.

[0028] As a further description of the above technical solution:

[0029] The stirring assembly comprises a stirring motor arranged on the reaction kettle, and a stirring plate is arranged on the driving shaft of the stirring motor.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] 1. In the present invention, a nitrogen filling port is provided on the reactor, and nitrogen enters the reactor through the nitrogen filling port. The nitrogen can bring the reactants accumulated at the top of the reactor and volatilized into the condenser inlet, which can reduce the solubility of the reactants volatilized from the top of the reactor. The volatilized reactants are cooled by the condenser and then refluxed into the reactor to continue to participate in the reaction, so as to ensure that the conditions such as the ratio of various raw materials in the reaction liquid remain unchanged, increase the yield of the phenolic resin adhesive, ensure the quality of the phenolic resin adhesive, and reduce environmental pollution. After the nitrogen is discharged from the condenser, it is treated in a steam-water separator and then discharged.

[0032] 2. In the present invention, water vapor flows into the steam-water separator after being processed by the condenser, and then flows to the water storage tank after being processed by the steam-water separator. After being filtered, it can be used for heating the steam heating coil, making full use of the waste heat of the steam, thereby achieving the purpose of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a structural schematic diagram of an environmentally friendly production device for phenolic resin adhesive.

[0035] Figure 2 This is a schematic diagram of the structure of the third pipeline in an environmentally friendly production device for phenolic resin adhesives.

[0036] Figure 3 The figure is a cross-sectional view of the third pipeline in an environmentally friendly production device for phenolic resin adhesive.

[0037] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0038] Figure 5This is a schematic diagram of the structure of a reactor in an environmentally friendly production device for phenolic resin adhesives.

[0039] Legend:

[0040] 1. Reactor; 2. Nitrogen filling port; 3. Formaldehyde storage tank; 4. First pipeline; 5. Adhesive storage tank; 6. Second pipeline; 7. Caustic soda storage tank; 8. Third pipeline; 81. Outer pipe; 82. Inner pipe; 9. Phenol storage tank; 10. Fourth pipeline; 11. Condenser; 12. Fifth pipeline; 13. Sixth pipeline; 14. Seventh water pipe; 15. Water storage tank; 16. Steam-water separator; 17. Eighth water pipe; 18. Solenoid valve; 19. First connecting column; 20. Second connecting column; 21. Rope; 22. Stirring motor; 23. Stirring plate. DETAILED DESCRIPTION

[0041] 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] See also Figure 1-5 The present invention provides an environmentally friendly production device for a phenolic resin adhesive, comprising:

[0047] A reactor 1, wherein a stirring assembly is arranged in the reactor 1, a cooling coil and a steam heating coil are arranged on the reactor wall of the reactor 1, and a nitrogen filling port 2 is arranged on the side wall of the reactor 1;

[0048] A formaldehyde storage tank 3, the formaldehyde storage tank 3 is used to store formaldehyde, the formaldehyde storage tank 3 is connected to the reactor 1 through a first pipeline 4, and a first delivery pump is provided on the first pipeline 4;

[0049] An adhesive storage tank 5, the adhesive storage tank 5 is used to store adhesive, the adhesive storage tank 5 is connected to the reactor 1 via a second pipeline 6, and a second delivery pump is provided on the second pipeline 6;

[0050] A caustic soda storage tank 7, wherein the caustic soda storage tank 7 is used to store caustic soda, and the caustic soda storage tank 7 is connected to the reactor 1 via a third pipeline 8, and a third delivery pump is provided on the third pipeline 8;

[0051] A phenol storage tank 9, the phenol storage tank 9 is used to store phenol, the phenol storage tank 9 is connected to the reactor 1 via a fourth pipeline 10, and a fourth delivery pump is provided on the fourth pipeline 10;

[0052] The condenser 11 has one end connected to the top of the reactor 1 through a fifth pipe 12, and the other end connected to the side wall of the condenser 11 through a sixth pipe 13. The condenser 11 is connected to the wastewater treatment component through a seventh water pipe 14.

[0053] The wastewater treatment assembly includes a water storage tank 15 and a steam-water separator 16. The steam-water separator 16 is connected to the condenser 11 through the seventh water pipe 14. The water storage tank 15 is connected to the steam-water separator 16 through the eighth water pipe 17. The water outlet of the water storage tank 15 is connected to the steam heating coil through the ninth water pipe. After being processed by the condenser, the water vapor flows into the steam-water separator, and then flows to the water storage tank after being processed by the steam-water separator. After being filtered, it can be used for heating the steam heating coil, making full use of the waste heat of the steam, thereby achieving the purpose of energy saving and environmental protection.

[0054] The water storage tank 15 is provided with a filter component. Specifically, the filter component is an activated carbon filter layer. The activated carbon can adsorb the residual aldehydes, phenols and benzene in the water, which can reduce pollution and be more environmentally friendly.

[0055] The first pipeline 4, the second pipeline 6, the third pipeline 8, the fourth pipeline 10, the fifth pipeline 12, the sixth pipeline 13, the seventh pipeline 14, the eighth pipeline and the ninth pipeline are all provided with a solenoid valve 18. The solenoid valve, the weighing instrument and the PLC controller are controlled and connected, which can facilitate the control of the amount of raw materials added and improve the quality of product production.

[0056] The reactor 1 is a double-layer reactor, and the cooling coil and the steam heating coil are arranged in the gap between the double-layer reactors. The cooling coil and the steam heating coil can be used to refine the temperature in the reactor, thereby improving the quality of product production.

[0057] The third pipeline 8 includes an outer tube 81 and an inner tube 82, wherein the inner tube 82 is built in the outer tube 81, and the material of the inner tube 82 is plastic, and the inner tube 82 is detachably connected to the inner tube 82 through a connecting component. The caustic soda transportation pipeline needs to be cleaned regularly for long-term use, because the blockage of the pipeline is caused by salt precipitation. By setting the outer tube and the inner tube, the inner tube is detachably connected to the outer tube, so that the inner tube can be removed for cleaning or replacement to avoid blockage, thereby improving the transportation efficiency of the third pipeline. The plastic inner tube has good corrosion resistance, can increase the service life, and has low cost.

[0058] The connecting component includes a first connecting column 19, a second connecting column 20 and a rope 21. The first connecting column 19 and the second connecting column 20 are respectively connected to the two ends of the outer tube 81. The rope 21 is arranged along the length direction of the inner tube 82. The opposite ends of the rope 21 are respectively connected to the first connecting column 19 and the second connecting column 20. By setting the first connecting column, the second connecting column and the rope, when disassembling the inner tube, first loosen the rope on the first connecting column, pull the rope to pull the inner tube out of the outer tube, separate the inner tube from the rope for cleaning or replacement, and when installing, connect the cleaned or replaced inner tube to the rope, pull the rope at one end of the second connecting column, pull the inner tube into the outer tube, and then fix the stretched two ends, so that it is easy to disassemble the inner tube and it is safe.

[0059] The formaldehyde storage tank 3 , the adhesive storage tank 5 , the caustic soda storage tank 7 , and the phenol storage tank 9 are all provided with weighing instruments.

[0060] The stirring assembly includes a stirring motor 22 disposed on the reactor 1, and a stirring plate 23 is disposed on the driving shaft of the stirring motor 22, so as to facilitate stirring of materials in the reactor and make various materials evenly mixed.

[0061] Working principle: By setting a nitrogen filling port on the reactor, nitrogen enters the reactor through the nitrogen filling port. Nitrogen can bring the reactants accumulated at the top of the reactor and volatilized into the condenser inlet, which can reduce the solubility of the reactants volatilized at the top of the reactor. The reactants are cooled by the condenser and then flow back into the reactor to continue to participate in the reaction, so as to ensure that the various raw material ratios in the reaction liquid remain unchanged, increase the yield of phenolic resin adhesive, ensure the quality of phenolic resin adhesive, and reduce environmental pollution. Nitrogen is discharged from the condenser and then discharged after being treated in the steam-water separator. After being treated in the condenser, the water vapor flows into the steam-water separator, and then flows to the water storage tank after being treated in the steam-water separator. After being filtered, it can be used for steam heating coil heating, making full use of the waste heat of steam, so as to achieve the purpose of energy saving and environmental protection.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmentally friendly production device for phenolic resin adhesive, characterized in that: include: A reactor, wherein a stirring assembly is arranged in the reactor, a cooling coil and a steam heating coil are arranged on the reactor wall of the reactor, and a nitrogen filling port is arranged on the side wall of the reactor; A formaldehyde storage tank, the formaldehyde storage tank is used to store formaldehyde, the formaldehyde storage tank is connected to the reactor through a first pipeline, and a first delivery pump is provided on the first pipeline; An adhesive storage tank, the adhesive storage tank is used to store adhesive, the adhesive storage tank is connected to the reactor via a second pipeline, and a second delivery pump is provided on the second pipeline; A caustic soda storage tank, the caustic soda storage tank is used to store caustic soda, the caustic soda storage tank is connected to the reactor through a third pipeline, and a third delivery pump is provided on the third pipeline; A phenol storage tank, the phenol storage tank is used to store phenol, the phenol storage tank is connected to the reactor via a fourth pipeline, and a fourth delivery pump is provided on the fourth pipeline; A condenser, one end of the condenser is connected to the top of the reactor through a fifth pipe, the other end of the condenser is connected to the side wall of the condenser through a sixth pipe, and the condenser is connected to the wastewater treatment component through a seventh water pipe.

2. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The wastewater treatment component includes a water storage tank and a steam-water separator, the steam-water separator is connected to the condenser through a seventh water pipe, the water storage tank is connected to the steam-water separator through an eighth water pipe, and the water outlet of the water storage tank is connected to the steam heating coil through a ninth water pipe.

3. The environmentally friendly production device for phenolic resin adhesive according to claim 2, characterized in that: A filtering component is arranged in the water storage tank.

4. The environmentally friendly production device for phenolic resin adhesive according to claim 3, characterized in that: The filter component is an activated carbon filter layer.

5. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The first pipeline, the second pipeline, the third pipeline, the fourth pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline and the ninth pipeline are all provided with solenoid valves.

6. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The reactor is a double-layer reactor, and the cooling coil and the steam heating coil are arranged in the gap between the double-layer reactor.

7. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The third pipe includes an outer pipe and an inner pipe. The inner pipe is embedded in the outer pipe. The inner pipe is made of plastic. The inner pipe is detachably connected to the inner pipe via a connecting component.

8. The environmentally friendly production device for phenolic resin adhesive according to claim 7, characterized in that: The connecting component includes a first connecting column, a second connecting column and a rope, the first connecting column and the second connecting column are respectively connected to the two ends of the outer tube, the rope is arranged along the length direction of the inner tube, and the opposite ends of the rope are respectively connected to the first connecting column and the second connecting column.

9. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The formaldehyde storage tank, the adhesive storage tank, the caustic soda storage tank, and the phenol storage tank are all provided with weighing instruments.

10. The environmentally friendly production device for phenolic resin adhesive according to claim 1, characterized in that: The stirring assembly comprises a stirring motor arranged on the reaction kettle, and a stirring plate is arranged on the driving shaft of the stirring motor.