Alkyd resin production system

Abstract

The utility model discloses an alkyd resin production system. The alkyd resin production system comprises a reaction kettle, a feeding pipe, a gas conveying pipe, a material tank and a gas compression tank, the reaction kettle is provided with an exhaust hole for exhausting waste gas; the gas conveying pipe comprises a main pipe, and a first branch pipe and a second branch pipe which are connected with the main pipe; the material tank is connected with the reaction kettle through a feeding pipe; the gas compression tank is connected with the main pipe, connected with the material groove through a first branch pipe and connected with the feeding pipe through a second branch pipe. Wherein the gas compression tank can be used for introducing nitrogen into the material tank, pushing an antioxidant in the material tank to be input into the reaction kettle along the feeding pipe by utilizing negative pressure, and can be used for introducing nitrogen into the feeding pipe so as to purge the feeding pipe. According to the alkyd resin production system provided by the utility model, the operation convenience and safety of adding an antioxidant can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor production systems, and particularly relates to an alkyd resin production system. Background Art

[0002] During the production process of alkyd resin, a certain amount of antioxidant needs to be added. The antioxidant can reduce the color value and acidity of alkyd resin, and effectively improve the stability and weather resistance of alkyd resin. In the existing production process of alkyd resin, before production, the reactor needs to be filled with nitrogen, and then materials are added in segments according to the feeding sequence. For example, in the first stage, solvents and oils are added, in the second stage, phthalic anhydride and alcohols are added, in the third stage, antioxidant is added, and in the fourth stage, solvent is added for dilution. In the stage of adding antioxidant, the antioxidant needs to be pre-mixed with water in proportion, and then the antioxidant is transported into the reactor through a pneumatic diaphragm pump. After the addition is completed, the pipeline is rinsed with deionized water. Since high temperature is generated during the production of alkyd resin, the feeding hole of the reactor needs to be opened during the above process of adding antioxidant, and the materials are prone to splashing, which needs to be improved in terms of safety and operability. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an alkyd resin production system, which can improve the operation convenience and safety of adding antioxidant.

[0004] The alkyd resin production system according to the first aspect embodiment of the utility model includes:

[0005] A reactor, provided with an exhaust hole for discharging waste gas;

[0006] A feeding pipe;

[0007] An air delivery pipe, including a main pipe, and a first branch pipe and a second branch pipe connected to the main pipe;

[0008] A material tank, connected to the reactor through the feeding pipe;

[0009] A gas compression tank, connected to the main pipe, and connected to the material tank through the first branch pipe, and connected to the feeding pipe through the second branch pipe;

[0010] Wherein, the gas compression tank can introduce nitrogen into the material tank, use negative pressure to push the antioxidant in the material tank to be input into the reactor along the feeding pipe, and can introduce nitrogen into the feeding pipe to purge the feeding pipe.

[0011] The alkyd resin production system according to the embodiments of the present utility model has at least the following beneficial effects: The reaction kettle and the material tank are connected through a feeding pipe. The main pipe of the gas transmission pipe is connected to the gas compression pipe. The first branch pipe of the gas transmission pipe is connected to the main pipe and the material tank. The second branch pipe of the gas transmission pipe is connected to the main pipe and the feeding pipe. The gas compression tank can introduce nitrogen into the material tank, use negative pressure to push the antioxidant in the material tank to be input into the reaction kettle along the feeding pipe, and can introduce nitrogen into the feeding pipe to purge the feeding pipe, effectively improving the operation convenience and safety of adding the antioxidant.

[0012] According to some embodiments of the present utility model, a check valve is provided on the feeding pipe. The connection point between the second branch pipe and the feeding pipe is the connection point. The check valve is located between the reaction kettle and the connection point, and the conveying direction of the check valve faces the reaction kettle.

[0013] According to some embodiments of the present utility model, a sight glass lamp is provided on the feeding pipe. The connection point between the second branch pipe and the feeding pipe is the connection point. The sight glass lamp is located between the material tank and the connection point.

[0014] According to some embodiments of the present utility model, a gas flowmeter is provided on the main pipe.

[0015] According to some embodiments of the present utility model, the gas flowmeter is configured as a rotameter.

[0016] According to some embodiments of the present utility model, the first branch pipe and the second branch pipe are connected through a third branch pipe, and a control valve is provided on the third branch pipe.

[0017] According to some embodiments of the present utility model, the material tank is provided with an exhaust pipe for discharging gas.

[0018] According to some embodiments of the present utility model, a hopper for filling materials is provided at the top of the material tank.

[0019] According to some embodiments of the present utility model, the exhaust hole is connected to an exhaust gas treatment system through an exhaust gas pipe.

[0020] According to some embodiments of the present utility model, it further includes an antioxidant mixing barrel for mixing the antioxidant and water, and the antioxidant mixing barrel is connected to the material tank.

[0021] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0022] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0023] Figure 1 This is a schematic diagram of the alkyd resin production system according to an embodiment of the present utility model.

[0024] Reference numerals:

[0025] Reaction kettle 1, waste gas pipe 2, first feed inlet 3, second feed inlet 4, stirring mechanism 5, feeding pipe 6, one-way valve 7, control valve 8, sight glass lamp 9, gas transmission pipe 10, main pipe 11, first branch pipe 12, second branch pipe 13, gas flowmeter 14, material tank 15, exhaust pipe 16, antioxidant mixing barrel 17, third branch pipe 18. Detailed implementation manners

[0026] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is more than two, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0030] During the production process of alkyd resin, a certain amount of antioxidant needs to be added. The antioxidant can reduce the color value and acidity of alkyd resin, and effectively improve the stability and weather resistance of alkyd resin. In the existing production process of alkyd resin, before production, the reaction kettle needs to be filled with nitrogen, and then the materials are added in segments according to the feeding order. For example, solvents and oils are added in the first stage, phthalic anhydride and alcohols are added in the second stage, antioxidants are added in the third stage, and solvents are added in the fourth stage to dilute. In the stage of adding antioxidants, the antioxidant needs to be pre-mixed with water in proportion, and then the antioxidant is transported into the reaction kettle through a pneumatic diaphragm pump. After the addition is completed, the pipeline is rinsed with deionized water. Since high temperature is generated during the production of alkyd resin, the feeding hole of the reaction kettle needs to be opened during the above process of adding antioxidants, and the materials are prone to splashing, which needs to be improved in terms of safety and operability.

[0031] In view of the above technical problems, an embodiment of the present utility model provides an alkyd resin production system, which uses a material tank to temporarily store materials, and nitrogen is introduced into the material tank. The gas pressure is used to push the materials to reach the reaction kettle through the feeding pipe. The feeding pipe is also connected with a gas transmission pipe, and nitrogen is used to clean the materials in the feeding pipe.

[0032] The alkyd resin production system according to the embodiment of the present utility model is described below with reference to the accompanying drawings.

[0033] Refer to Figure 1 As shown, in the embodiment of the present utility model, the alkyd resin production system includes a reaction kettle 1, a feeding pipe 6, a gas transmission pipe 10, a material tank 15 and a gas compression tank. The reaction kettle 1 and the material tank 15 are connected through the feeding pipe 6. The gas transmission pipe 10 is used to transport compressed gas to the material tank 15 and the feeding pipe 6. The gas compression tank is connected to the gas transmission pipe 10 and is used to compress gas and transport compressed gas to the gas transmission pipe 10. The material tank 15 is used to temporarily store materials.

[0034] It should be noted that, in the embodiment of the present utility model, the reaction kettle 1 is provided with an exhaust hole for discharging waste gas. The exhaust hole is located at the top, and a waste gas pipe 2 is installed at the exhaust hole. The waste gas pipe 2 is connected to a waste gas treatment system. A first feeding port 3 is provided at the bottom of the reaction kettle 1, and the feeding pipe 6 is installed at the first feeding port 3. The first feeding port 3 is used to add antioxidants. In addition, a second feeding port 4 is further provided at the top of the reaction kettle 1. The second feeding port 4 is used to add other materials except antioxidants, such as solvents, oils, etc. The reaction kettle 1 is provided with a stirring mechanism 5, and the setting of the stirring mechanism 5 is beneficial to improving the reaction rate of the materials in the reaction kettle 1.

[0035] It should be noted that in the embodiment of the present utility model, the feeding pipe 6 is provided with a one-way valve 7, and the conveying direction of the one-way valve 7 is towards the reaction kettle 1. The setting of the one-way valve 7 can prevent the material in the reaction kettle 1 from flowing back into the feeding pipe 6. The feeding pipe 6 is also provided with a plurality of control valves 8, and the control valves 8 are used to open and close the feeding pipe 6. In addition, a sight glass lamp 9 is arranged between the plurality of control valves 8 on the feeding pipe 6 to facilitate observing the material condition in the feeding pipe 6. The control valve 8 can be a manual valve or an electric valve.

[0036] It should be noted that in the embodiment of the present utility model, the gas transmission pipe 10 includes a main pipe 11, and a first branch pipe 12 and a second branch pipe 13 connected to the main pipe 11. The main pipe 11 is connected to a gas compression tank. The first branch pipe 12 and the second branch pipe 13 are connected in parallel to the main pipe 11. The first branch pipe 12 is connected to the material tank 15, and the second branch pipe 13 is connected to the feeding pipe 6. A gas flow meter 14 is provided on the main pipe 11, and the gas flow meter 14 is configured as a rotor flow meter to facilitate detecting the gas flow rate passing through the main pipe 11.

[0037] The gas transmission path is as follows: The gas compression tank compresses nitrogen, and then transports the nitrogen to the main pipe 11. The nitrogen passes through the main pipe 11 to reach the first branch pipe 12 and the second branch pipe 13. The nitrogen entering the first branch pipe 12 reaches the material tank 15, and the nitrogen entering the second branch pipe 13 enters the feeding pipe 6. Among them, the time when the nitrogen in the first branch pipe 12 reaches the material tank 15 is staggered from the time when the nitrogen in the second branch pipe 13 reaches the feeding pipe 6. When it is necessary to transport materials, the nitrogen in the first branch pipe 12 smoothly reaches the material tank 15. Under the action of gas pressure, the materials in the material tank 15 enter the feeding pipe 6. At this time, the second branch pipe 13 is not connected to the feeding pipe 6. When it is necessary to clean the feeding pipe 6, the nitrogen in the second branch pipe 13 smoothly enters the feeding pipe 6. Under the action of gas pressure, the hanging materials in the feeding pipe 6 are swept away.

[0038] In addition, the first branch pipe 12 and the second branch pipe 13 are connected through a third branch pipe 18, and the third branch pipe 18 is also provided with a control valve 8. The control valve 8 can be a manual valve or an electric valve. When there is no material in the material tank 15 and it is necessary to clean the material tank 15 and the feeding pipe 6 at the same time, the first branch pipe 12 and the second branch pipe 13 are connected, the first branch pipe 12 is connected to the material tank 15, and the second branch pipe 13 is connected to the feeding pipe 6, and gas is transported simultaneously.

[0039] It should also be noted that the connection point between the second branch pipe 13 and the feeding pipe 6 is the connection point, and the one-way valve 7 is located between the reaction kettle 1 and the connection point. The sight glass lamp 9 is located between the material tank 15 and the connection point.

[0040] It should be noted that in the embodiment of the present utility model, the material tank 15 is provided with an exhaust pipe 16 for discharging nitrogen. When feeding is not required, the exhaust pipe 16 is opened to discharge the nitrogen in the material tank 15. In addition, a hopper for adding antioxidant is provided at the top of the material tank 15, which facilitates adding the material to the material tank 15. When the material is antioxidant, the antioxidant and water are first added to the antioxidant mixing tank 17 and stirred and mixed, and then the mixed material in the antioxidant mixing tank 17 is added to the hopper of the material tank 15.

[0041] In the embodiment of the present utility model, the working process of the alkyd resin production system is as follows:

[0042] (1) Feeding materials: Open the exhaust hole at the top of the reaction kettle 1, start the gas compression tank and input nitrogen to discharge the air in the reaction kettle 1; Open the second feed port 4 at the top of the reaction kettle 1 to feed materials.

[0043] (2) Adding antioxidant: Add the antioxidant mixed material into the material tank 15, open the first feed port 3 at the bottom of the reaction kettle 1, start the gas compression tank and input nitrogen into the material tank 15, and the material enters the feeding pipe 6 under the action of gas pressure and reaches the reaction kettle 1 through the feeding pipe 6.

[0044] (3) Cleaning: Close the first branch pipe 12, open the second branch pipe 13, and the gas compression tank conveys nitrogen into the feeding pipe 6 to clean the pipe wall of the feeding pipe 6.

[0045] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above embodiments, and various changes can be made without departing from the purpose of the present utility model within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An alkyd resin production system, characterized in that, Comprising: A reaction kettle, provided with an exhaust hole for discharging waste gas; A feed pipe; A gas transmission pipe, including a main pipe, and a first branch pipe and a second branch pipe connected to the main pipe; A material tank, connected to the reaction kettle through the feed pipe; A gas compression tank, connected to the main pipe, and connected to the material tank through the first branch pipe, and connected to the feed pipe through the second branch pipe; Wherein, the gas compression tank can introduce nitrogen into the material tank, use negative pressure to push the antioxidant in the material tank to be input into the reaction kettle along the feed pipe, and can introduce nitrogen into the feed pipe to purge the feed pipe.

2. The alkyd resin production system according to claim 1, characterized in that, The feed pipe is provided with a check valve. The connection point between the second branch pipe and the feed pipe is the connection point. The check valve is located between the reaction kettle and the connection point, and the conveying direction of the check valve faces the reaction kettle.

3. An alkyd resin production system according to claim 1, characterized in that, The feed pipe is provided with a sight glass lamp. The connection point between the second branch pipe and the feed pipe is the connection point. The sight glass lamp is located between the material tank and the connection point.

4. An alkyd resin production system according to claim 1, wherein, The main pipe is provided with a gas flow meter.

5. The alkyd resin production system according to claim 4, characterized in that, The gas flow meter is configured as a rotameter.

6. The alkyd resin production system according to claim 1, characterized in that, The first branch pipe and the second branch pipe are connected through a third branch pipe, and the third branch pipe is provided with a control valve.

7. The alkyd resin production system according to claim 1, characterized in that, The material tank is provided with an exhaust pipe for discharging gas.

8. The alkyd resin production system according to claim 1, wherein, The top of the material tank is provided with a hopper for adding materials.

9. The alkyd resin production system according to claim 1, wherein, The exhaust hole is connected to an exhaust gas treatment system through an exhaust gas pipe.

10. The alkyd resin production system according to claim 1, characterized in that, It further includes an antioxidant mixing barrel for mixing antioxidant and water, and the antioxidant mixing barrel is connected to the material tank.

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