A continuous production apparatus for pigment yellow 139

Abstract

This utility model discloses a continuous production apparatus for Pigment Yellow 139, including a phthalocyanine storage tank, a barbituric acid storage tank, a reactor, and a product storage tank. The phthalocyanine and barbituric acid storage tanks are both connected to the reactor, into which phthalocyanine and barbituric acid are injected, respectively. A threaded pusher is installed in the reactor cavity, which gradually pushes the injected phthalocyanine and barbituric acid from the front end to the rear end. A jacket is installed on the inner or outer side of the reactor cavity, and a heat-conducting liquid is placed inside the jacket to heat the raw materials in the reactor cavity. The product storage tank is connected to the reactor via a pipeline, and the Pigment Yellow produced after the reaction is output to the product storage tank. This utility model discloses a production apparatus that enables continuous synthesis, improving feeding accuracy, reaction stability, and production safety.

Description

Technical Field

[0001] This utility model relates to a continuous production device for pigment yellow 139, belonging to the technical field of chemical production equipment. Background Technology

[0002] Pigment Yellow 139, as an isoindoline pigment, contains carbonyl, imino, cyano, and amide groups in its molecule, resulting in intramolecular and intermolecular hydrogen bonds and a more planar molecular structure. Therefore, Pigment Yellow 139 is an organic pigment with excellent heat and solvent resistance.

[0003] Currently, the main method for preparing Pigment Yellow 139 involves the reaction of phthalocyanine with barbiturates in a solution system under acidic conditions. Pigment Yellow 139 production is predominantly batch-based, resulting in low efficiency and high production costs, making it unsuitable for large-scale production. Furthermore, the production of Pigment Yellow 139 typically utilizes organic solvent systems, leading to large quantities of stored organic solvents such as methanol, complex feeding processes, and the need for reactions in reactors, hindering continuous production. Additionally, the large solvent consumption necessitates solvent removal from the crude product, impacting operator occupational health and generating substantial wastewater requiring subsequent treatment, posing threats to safety and environmental protection.

[0004] Therefore, it is necessary to study the existing Pigment Yellow 139 production equipment to solve at least one of the problems in the existing Pigment Yellow 139 production process, such as insufficient capacity, low production efficiency, complex secondary desolvation process, and high production cost. Utility Model Content

[0005] To overcome the above problems, in-depth research was conducted, and a continuous production device for Pigment Yellow 139 was designed, including a phthalocyanine storage tank 1, a barbituric acid storage tank 2, a reactor 3, and a product storage tank 4.

[0006] The phthalocyanine storage tank 1 and the barbituric acid storage tank 2 are both connected to the reactor 3, and phthalocyanine and barbituric acid are injected into the reactor respectively.

[0007] The reactor 3 chamber is equipped with a threaded pusher 31, which gradually pushes the phthalocyanine and barbituric acid injected into the reactor from the front end to the rear end.

[0008] A jacket 32 ​​is provided on the inner or outer side of the reactor cavity, and a heat-conducting liquid is provided inside the jacket 32 ​​for heating the raw materials inside the reactor cavity.

[0009] The product storage tank is connected to the reactor via a pipeline, and the pigment yellow 139 generated after the reaction is output to the product storage tank 4.

[0010] In a preferred embodiment, the reactor has a motor 33, which drives the threaded push rod 31 to rotate, thereby pushing the raw material to the rear end.

[0011] In a preferred embodiment, the reactor chamber is horizontally arranged, with the inlet 34 for phthalocyanine and barbituric acid located on the upper front side of the chamber, and the outlet 35 for pigment yellow 139 located on the lower rear side of the chamber.

[0012] In a preferred embodiment, the reactor is further provided with a sampling port 36.

[0013] In a preferred embodiment, a solenoid valve 37 is also provided on the pipeline connecting the product storage tank and the reactor.

[0014] In a preferred embodiment, the reactor is equipped with a pH meter, a thermometer, and a pressure gauge.

[0015] In a preferred embodiment, a weighing unit is provided on the phthalocyanine storage tank and the barbituric acid storage tank, or

[0016] Weighing units or flow meters are installed on the connecting pipes between the phthalocyanine storage tank, the barbituric acid storage tank and the reactor to monitor and control the amount of raw materials entering the reactor.

[0017] In a preferred embodiment, the production apparatus further includes a heating and cooling integrated machine 5, which heats the heat-conducting liquid in the jacket.

[0018] In a preferred embodiment, a heat circulation pump 6 is provided on the connecting pipe between the integrated heating and cooling unit and the jacket.

[0019] The beneficial effects of this utility model include:

[0020] (1) Barbituric acid and phthalocyanine enter the reactor through two separate feed lines and a weighing module, which can realize step feeding and mixing. The problem of phthalocyanine easily deteriorating and precipitating when it encounters acid and water is solved by solid feeding and melt reaction, which improves the accuracy of feeding, reaction stability and production safety.

[0021] (2) Continuous feeding and discharging enable continuous synthesis of Pigment Yellow 139, simplifying the production process. Compared with traditional batch synthesis, continuous synthesis features adjustable feeding and discharging speeds, high heat and mass transfer efficiency, and easy control of reaction parameters. The continuous and controllable production process allows production to be started or stopped as needed, improving the utilization rate of raw materials phthalocyanine and barbituric acid, reducing production costs, and achieving higher yields and production efficiency.

[0022] (3) The solution system reaction environment commonly used in the original process is replaced by a molten reaction environment that does not require solvents, which solves the problems of large amounts of organic solvents stored in the production process and large amounts of wastewater treated in the desolvation process, thus ensuring production safety and environmental friendliness. Attached Figure Description

[0023] Figure 1 This diagram shows a structural schematic of a continuous production apparatus for Pigment Yellow 139 according to a preferred embodiment of the present invention.

[0024] Figure 2 The diagram shows a reactor structure in a continuous production apparatus for Pigment Yellow 139 according to a preferred embodiment of the present invention.

[0025] Explanation of icon numbers:

[0026] 1-Phalocyanine storage tank;

[0027] 2-Barbituric acid storage tank;

[0028] 3-Reactor;

[0029] 4-Product storage tank;

[0030] 5-Combined cooling and heating unit;

[0031] 6-Heat circulation pump;

[0032] 31-Threaded push rod;

[0033] 32-Cladle;

[0034] 33-Motor;

[0035] 34 - Feed inlet;

[0036] 35 - Discharge port;

[0037] 36 - Sampling port;

[0038] 37-Solenoid valve. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more apparent.

[0040] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0041] According to the present invention, a continuous production apparatus for pigment yellow 139 includes a phthalocyanine storage tank 1, a barbituric acid storage tank 2, a reactor 3, and a product storage tank 4.

[0042] The phthalocyanine storage tank 1 and the barbituric acid storage tank 2 are both connected to the reactor 3, and phthalocyanine and barbituric acid are injected into the reactor respectively.

[0043] The reactor 3 chamber is equipped with a threaded pusher 31, which gradually pushes the phthalocyanine and barbituric acid injected into the reactor from the front end to the rear end.

[0044] A jacket 32 ​​is provided on the inner or outer side of the reactor cavity, and a heat-conducting liquid is provided inside the jacket 32 ​​for heating the raw materials inside the reactor cavity.

[0045] The product storage tank is connected to the reactor via a pipeline, and the pigment yellow 139 generated after the reaction is output to the product storage tank 4.

[0046] In this invention, phthalocyanine and barbituric acid are reacted to produce pigment yellow 139. This reaction does not involve an organic solvent system, requires no solvent removal, and the feeding process is relatively simple, making the production process environmentally friendly and safe. Furthermore, a threaded pusher enables continuous feeding of the reaction materials for a continuous reaction.

[0047] Furthermore, the reactor also has a motor 33, which drives the threaded push rod 31 to rotate, thereby pushing the raw material to the rear end.

[0048] In a preferred embodiment, the reactor chamber is horizontally arranged, and the inlets 34 for phthalocyanine and barbituric acid are located on the upper front side of the chamber.

[0049] In a preferred embodiment, the pigment yellow 139 outlet 35 is located on the lower rear end of the cavity so that the pigment yellow 139 generated by the reaction can smoothly enter the product storage tank.

[0050] In a preferred embodiment, the reactor is further provided with a sampling port 36 to facilitate sampling and testing of the products generated by the reaction.

[0051] In a preferred embodiment, a solenoid valve 37 is also installed on the pipeline connecting the product storage tank and the reactor. When the expected reaction effect is not achieved at the sampling port, the solenoid valve is closed to increase the reaction time of the raw materials.

[0052] In a preferred embodiment, the reactor is further equipped with a pH meter, a thermometer, and a pressure gauge to monitor the reaction environment inside the reactor chamber.

[0053] Obviously, an injection pump is installed on the connecting pipe between the phthalocyanine storage tank, the barbituric acid storage tank and the reactor to control the amount of raw material injected.

[0054] In a preferred embodiment, a weighing unit is provided on the phthalocyanine storage tank and the barbituric acid storage tank, or

[0055] Weighing units or flow meters are installed on the connecting pipes between the phthalocyanine storage tank, the barbituric acid storage tank and the reactor to monitor and control the amount of raw materials entering the reactor.

[0056] In a preferred embodiment, the production apparatus further includes a heating and cooling integrated machine 5, which heats the heat-conducting liquid in the jacket to ensure that the jacket continuously heats the raw materials.

[0057] Furthermore, a heat circulation pump 6 is installed on the connecting pipe between the integrated heating and cooling unit and the jacket to accelerate the circulation speed of the heat transfer fluid and improve the stability of the jacket temperature.

[0058] Example

[0059] The following apparatus is used for the continuous production of Pigment Yellow 139: a phthalocyanine storage tank 1, a barbituric acid storage tank 2, a reactor 3, and a product storage tank 4.

[0060] The phthalocyanine storage tank 1 and the barbituric acid storage tank 2 are both connected to the reactor 3, and phthalocyanine and barbituric acid are injected into the reactor respectively.

[0061] The reactor 3 chamber is equipped with a threaded pusher 31, which gradually pushes the phthalocyanine and barbituric acid injected into the reactor from the front end to the rear end.

[0062] A jacket 32 ​​is provided on the inner or outer side of the reactor cavity, and a heat-conducting liquid is provided inside the jacket 32 ​​for heating the raw materials inside the reactor cavity.

[0063] The product storage tank is connected to the reactor via a pipeline, and the pigment yellow 139 generated after the reaction is output to the product storage tank 4.

[0064] The reactor has a motor 33, which drives the threaded push rod 31 to rotate, thereby pushing the raw material to the rear end.

[0065] The reactor chamber is horizontally arranged, with the inlet 34 for phthalocyanine and barbituric acid located on the upper front side of the chamber, and the outlet 35 for pigment yellow 139 located on the lower rear side of the chamber.

[0066] The reactor is also equipped with a sampling port 36.

[0067] A solenoid valve 37 is also installed on the pipeline connecting the product storage tank and the reactor.

[0068] The reactor is equipped with a pH meter, a thermometer, and a pressure gauge.

[0069] Weighing units are installed on the phthalocyanine storage tank and the barbituric acid storage tank, or

[0070] Weighing units or flow meters are installed on the connecting pipes between the phthalocyanine storage tank, the barbituric acid storage tank and the reactor to monitor and control the amount of raw materials entering the reactor.

[0071] The production device also includes a heating and cooling integrated machine 5, which heats the heat-conducting liquid in the jacket.

[0072] A heat circulation pump 6 is installed on the connecting pipe between the integrated heating and cooling unit and the jacket.

[0073] Solid phthalocyanine with a mass fraction of 98% is introduced into the reactor through a pipeline at a flow rate of 200 g / min from the phthalocyanine silo. Barbiturate from the barbituric acid storage tank is introduced into the reactor through a pipeline at a flow rate of 100 g / min to fully contact and mix with the phthalocyanine. The pH is monitored to 1-4. The heat required for the reaction is obtained through a combined heating and cooling unit, and the temperature is controlled at 245℃.

[0074] The final yield of Pigment Yellow 139 was 95%, and the pass rate was 98%.

[0075] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this utility model. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0076] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0077] The present invention has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and serve only an illustrative purpose. Based on this, various substitutions and improvements can be made to the present invention, all of which fall within the protection scope of the present invention.

Claims

1. A continuous production apparatus of Pigment Yellow 139, characterized by, It includes a phthalocyanine storage tank (1), a barbituric acid storage tank (2), a reactor (3), and a product storage tank (4). The phthalocyanine storage tank (1) and the barbituric acid storage tank (2) are both connected to the reactor (3), and phthalocyanine and barbituric acid are injected into the reactor respectively; The reactor (3) cavity is equipped with a threaded pusher (31), through which the phthalocyanine and barbituric acid injected into the reactor are gradually pushed from the front end to the rear end. A jacket (32) is provided on the inner or outer side of the reactor cavity, and a heat-conducting liquid is provided in the jacket (32) for heating the raw materials in the reactor cavity; The product storage tank is connected to the reactor via a pipeline, and the pigment yellow 139 generated after the reaction is output to the product storage tank (4).

2. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, The reactor has a motor (33), which drives the threaded push rod (31) to rotate, thereby pushing the raw material to the rear end.

3. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, The reactor chamber is horizontally arranged, with the inlet (34) for phthalocyanine and barbituric acid located on the upper front side of the chamber, and the outlet (35) for pigment yellow 139 located on the lower rear side of the chamber.

4. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, The reactor is also equipped with a sampling port (36).

5. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, A solenoid valve (37) is also installed on the pipeline connecting the product storage tank and the reactor.

6. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, The reactor is equipped with a pH meter, a thermometer, and a pressure gauge.

7. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, Weighing units are installed on the phthalocyanine storage tank and the barbituric acid storage tank, or Weighing units or flow meters are installed on the connecting pipes between the phthalocyanine storage tank, the barbituric acid storage tank and the reactor to monitor and control the amount of raw materials entering the reactor.

8. The continuous production apparatus for Pigment Yellow 139 according to claim 1, characterized in that, The production device also has a heating and cooling integrated machine (5), which heats the heat-conducting liquid in the jacket.

9. The continuous production apparatus for Pigment Yellow 139 according to claim 8, characterized in that, A heat circulation pump (6) is installed on the connecting pipe between the integrated heating and cooling unit and the jacket.

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