Carbon black granulation master batch external circulation system and use method thereof

Abstract

The invention relates to a carbon black granulation master batch external circulation system and a use method thereof.The system integrates a product storage tank, a cyclone separator, a dust collection fan, a dry-method granulator and a central processing system, and core equipment of the carbon black granulation master batch external circulation system forms closed-loop association through material flow and air flow; the unit serves as a material processing unit; the cyclone separator is used as a grading unit and is connected with a feeding part of the dry-method granulator; the product storage tank is used as an intermediate storage unit and is connected with a feed of the cyclone separator; the dust collection fan serves as an auxiliary unit, is connected with the top of the cyclone separator and is responsible for airflow and dust recovery; the control unit comprises airtight valves and a central processing system, and the airtight valves are mounted at outlets of the cyclone separator and the product tank and are matched with frequency conversion to control the feeding amount. By optimizing the equipment configuration and the technological process, efficient granulation of the carbon black, efficient recovery of the master batch and stable improvement of the product quality are achieved, and the method can be widely applied to the post-treatment process of the carbon black.

Description

Technical Field

[0001] This application relates to the field of carbon black post-processing technology, and in particular to a carbon black granulation masterbatch external circulation system and its usage method. Background Technology

[0002] Traditional dry carbon black granulation systems involve manually adding carbon black masterbatch before granulation, and then adjusting the masterbatch recirculation ratio of the granulator based on the granulation results. Each adjustment requires a shutdown to adjust the internal circulation of masterbatch during granulation. This method suffers from low production capacity, low masterbatch recovery efficiency, poor operability, and unstable product quality. Therefore, to improve carbon black processing efficiency and product quality, this invention proposes an integrated dry carbon black granulation masterbatch external circulation system. This system can autonomously adjust the amount of masterbatch in the granulator according to product quality, offering high operability and solving the problems existing in the prior art. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated dry carbon black granulation masterbatch external circulation system. By integrating core equipment such as a cyclone separator, product tank, dry granulator, dust extraction fan and airtight valve, it achieves efficient carbon black granulation, efficient masterbatch recovery and stable improvement of product quality.

[0004] To achieve the above objectives, according to one aspect of this application, a carbon black granulation masterbatch external circulation system is provided, comprising a product storage tank, a cyclone separator, a dust extraction fan, a dry granulator, and a central processing system. The outlet of the product storage tank is connected to the inlet of a first airtight valve, the outlet of the first airtight valve is connected to the inlet of the cyclone separator, the outlet of the cyclone separator is connected to the inlet of a second airtight valve, the outlet of the second airtight valve is connected to the inlet of the dry granulator, and the outlet of the dry granulator outputs qualified carbon black granules. The gas outlet of the cyclone separator is connected to the inlet of the dust extraction fan, and the outlet of the dust extraction fan is connected to a filter bag. The first and second airtight valves are each equipped with a variable frequency motor, and both are signal-connected to the central processing system.

[0005] According to embodiments of this application, both the first airtight valve and the second airtight valve include a motor, a sealing structure unit, a valve body, and a control interface unit. The sealing structure unit includes a packing seal and a nitrogen sealing assembly, and the valve body is used to connect to a pipeline.

[0006] According to an embodiment of this application, the control interface unit includes an RS485 and / or CAN interface. The control interface unit is linked with the central processing system control module to realize automatic adjustment of the feed rate and ensure the purity and stability of the masterbatch.

[0007] According to an embodiment of this application, the outlet of the cyclone separator is located at its bottom, and the gas outlet of the cyclone separator is located at its top.

[0008] According to the embodiments of this application, the cyclone separator uses negative pressure to draw in the raw material, and then uses centrifugal force to separate the particles from the airflow, thereby achieving gas-solid separation.

[0009] According to embodiments of this application, the dust extraction fan is equipped with a filtration system to capture and collect fine dust generated during the production process, while recovering valuable carbon black particles.

[0010] According to an embodiment of this application, the dry granulator is equipped with an independent drive motor and controller. The controller signal is connected to the central processing system. The dry granulator processes carbon black raw materials into regular masterbatches through mechanical pressure and shear force. At the same time, the controller is used to adjust the process parameters to meet the needs of different types of carbon black.

[0011] According to an embodiment of this application, the dry granulator is further provided with a conveying pipeline connected to a product storage tank for conveying granular carbon black to the product storage tank for recycling as masterbatch.

[0012] According to an embodiment of this application, the pipeline for conveying raw materials from the product storage tank to the cyclone separator is also provided with a discharge port and an air supply port.

[0013] According to another aspect of this application, a method of using a carbon black granulation masterbatch external circulation system as described above is provided, comprising the following steps:

[0014] S1: Open the first airtight valve and put the carbon black granules in the product storage tank into the cyclone separator;

[0015] S2: Turn on the vacuum fan to absorb the powdered carbon black in the product storage tank and then process it through the bag filter.

[0016] S3: The amount of masterbatch entering the dry granulator is adjusted by frequency conversion through the second airtight valve;

[0017] S4: The entire process is monitored and adjusted in real time through a central processing system to ensure product quality and production efficiency.

[0018] Compared with the prior art, the technical solution of this application can achieve the following beneficial effects:

[0019] 1. This carbon black granulation masterbatch external circulation system, with "cyclone grading + mechanical granulation + external circulation control + environmentally friendly recycling" as its core, can achieve the following beneficial effects: 1) Improved production efficiency: Through integrated equipment configuration and optimized process flow, efficient carbon black granulation and masterbatch recycling are achieved, significantly improving production efficiency; 2) Enhanced product quality: The separation of dust-laden airflow by the cyclone separator and the absorption of dust by the dust extraction fan ensure the purity and quality of the product; 3) Reduced energy consumption and costs: The dry granulation process eliminates the need for subsequent drying, reducing energy consumption; the recycling of masterbatch reduces raw material waste and lowers production costs; 4) Environmental protection and energy saving: The use of the dust extraction fan and airtight valve reduces dust emissions, meeting environmental protection requirements; at the same time, the entire system adopts an integrated design, reducing the floor space and installation costs.

[0020] 2. This application uses an airtight valve to connect the outlet of the cyclone separator / product storage tank to the downstream pipeline. The airtight valve is an integrated unit of "drive + sealing + valve body + control", which not only meets the sealing requirements of material conveying, but also accurately regulates the flow rate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0022] Figure 1 This is a schematic diagram illustrating the composition and structure of an external circulation system for carbon black granulation masterbatch, as exemplified by the present invention.

[0023] Figure 2 This is a flowchart illustrating the external circulation system for carbon black granulation masterbatch, as an example of the present invention.

[0024] The annotations in the attached figures are explained as follows:

[0025] 1. Product storage tank, 2. Cyclone separator, 3. Dry granulator, 4. Dust extraction fan, 5. First airtight valve, 6. Second airtight valve, 7. Feed inlet and air supply port. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains. The terms “first,” “second,” and similar terms used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a,” and similar terms, do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0028] like Figure 1 and Figure 2 As shown, this application exemplifies a carbon black granulation masterbatch external circulation system, comprising a product storage tank 1, a cyclone separator 2, a dust extraction fan 4, a dry granulator 3, and a central processing system. The core equipment of this carbon black granulation masterbatch external circulation system forms a closed loop connection through material flow and airflow: the front end is the dry granulator 3, serving as a material processing unit; the cyclone separator 2 serves as a grading unit, connected to the feed of the dry granulator 3; the product storage tank 1 serves as an intermediate storage unit, connected to the feed of the cyclone separator 2; the dust extraction fan 4 serves as an auxiliary unit, connected to the top of the cyclone separator 2, responsible for airflow and dust recovery; the control unit consists of an airtight valve and the central processing system, with the airtight valve installed at the outlet of the cyclone separator 2 and the product tank outlet, cooperating with frequency converter control of the feed rate.

[0029] In this embodiment, the outlet of product storage tank 1 is connected to the inlet of the first airtight valve 5, the outlet of the first airtight valve 5 is connected to the inlet of cyclone separator 2, the outlet of cyclone separator 2 is connected to the inlet of the second airtight valve 5, the outlet of the second airtight valve 5 is connected to the inlet of dry granulator 3, and the outlet of dry granulator outputs qualified carbon black granules. The gas outlet of cyclone separator 2 is connected to the inlet of dust extraction fan 4, and the outlet of dust extraction fan 4 is connected to a filter bag.

[0030] Specifically, the first airtight valve 5 and the second airtight valve 5 are each equipped with a variable frequency motor, and both are connected to the central processing system.

[0031] Specifically, both the first and second airtight valves 5 include a motor, a sealing structure unit, a valve body, and a control interface unit. The motor supports frequency conversion control to adjust the valve opening / feed speed and adapt to the flow requirements of the external circulation. The sealing structure unit includes a packing seal and a nitrogen seal assembly to prevent carbon black dust leakage, while the airtight valve rotor is adapted to the wear resistance requirements of the carbon black material. The valve body can be made of corrosion-resistant and wear-resistant metal (such as stainless steel) and connects the outlet of the cyclone separator 2 / product storage tank 1 to the downstream pipeline, serving as a channel for material flow. The control interface unit includes an RS485 and / or CAN interface. The control interface unit is linked with the central processing system control module to achieve automatic adjustment of the feed rate, ensuring the purity and stability of the masterbatch.

[0032] Specifically, the outlet of cyclone separator 2 is located at its bottom, and the gas outlet of cyclone separator 2 is located at its top. Cyclone separator 2 is used for efficient separation of powdered and granular carbon black in the product tank, effectively separating solid particles from dust-laden gas to ensure product purity and dryness. Simultaneously, cyclone separator 2 uses negative pressure to draw in raw materials, and then utilizes centrifugal force to separate particles from the airflow, achieving gas-solid separation.

[0033] Specifically, the dust extraction fan 4 is equipped with a filtration system to capture and collect fine dust generated during the production process, while also recovering valuable carbon black particles. The dust extraction fan 4 draws in the dust and transports it to the bag filter by generating negative pressure, thus achieving dust collection and treatment.

[0034] Specifically, the dry granulator 3 is equipped with an independent drive motor and controller, with the controller signal connected to the central processing system. The dry granulator 3 processes carbon black raw materials into regular masterbatches through mechanical pressure and shear force, while the controller adjusts process parameters to meet the needs of different carbon black types. The dry granulator 3 employs dry granulation technology, where powdered carbon black freely rolls and collides with each other within the granulator, forming spherical particles under the influence of intermolecular forces (van der Waals forces). The dry granulator 3 has advantages such as high granulation efficiency and stable product quality, making it a key piece of equipment for achieving efficient carbon black granulation.

[0035] Specifically, the dry granulator 3 is also equipped with a conveying pipeline connected to the product storage tank 1, which is used to convey granular carbon black to the product storage tank 1 for recycling as masterbatch.

[0036] Specifically, the pipeline from product storage tank 1 to cyclone separator 2 is also equipped with a discharge port and an air supply port 7.

[0037] This application also discloses a method for using a carbon black granulation masterbatch external circulation system as described above, comprising the following steps:

[0038] S1: Open the first airtight valve 5 and put the carbon black granules in the product storage tank 1 into the cyclone separator 2;

[0039] S2: Turn on the vacuum fan 4 to absorb the powdered carbon black in the product storage tank 1 into the bag filter for further processing;

[0040] S3: The amount of masterbatch entering the dry granulator 3 is adjusted by frequency conversion through the second airtight valve 5;

[0041] S4: The entire process is monitored and adjusted in real time through a central processing system to ensure product quality and production efficiency.

[0042] In this embodiment, the working principle of a carbon black granulation masterbatch external circulation system is as follows: 1) Material separation stage: The mixed carbon black (powder + granules) in the product tank enters the cyclone separator 2 through the first airtight valve 5. The cyclone separator 2 uses centrifugal force to achieve gas-solid separation: the granular carbon black is discharged from the bottom and enters the dry granulator 3, and the dust-laden gas (powdered carbon black) is discharged from the top; 2) Dust treatment stage: The dust extraction fan 4 generates negative pressure to draw the dust-laden gas into the bag filter. The bag filter collects the powdered carbon black, and the purified gas is discharged; 3) Granulation and forming stage: The granular carbon black enters the dry granulator 3 and forms spherical particles under the action of van der Waals forces through free rolling and collision; 4) Flow control and monitoring: The airtight valve adjusts the masterbatch flow through the variable frequency motor, and the central processing system monitors and adjusts the entire process in real time.

[0043] In summary, the technical solution of this application has the following beneficial effects:

[0044] 1. This carbon black granulation masterbatch external circulation system, with "cyclone grading + mechanical granulation + external circulation control + environmentally friendly recycling" as its core, can achieve the following beneficial effects: 1) Improved production efficiency: Through integrated equipment configuration and optimized process flow, efficient carbon black granulation and masterbatch recycling are achieved, significantly improving production efficiency; 2) Enhanced product quality: The separation of dust-laden airflow by the cyclone separator and the absorption of dust by the dust extraction fan ensure the purity and quality of the product; 3) Reduced energy consumption and costs: The dry granulation process eliminates the need for subsequent drying, reducing energy consumption; the recycling of masterbatch reduces raw material waste and lowers production costs; 4) Environmental protection and energy saving: The use of the dust extraction fan and airtight valve reduces dust emissions, meeting environmental protection requirements; at the same time, the entire system adopts an integrated design, reducing the floor space and installation costs.

[0045] 2. This application uses an airtight valve to connect the outlet of the cyclone separator / product storage tank to the downstream pipeline. The airtight valve is an integrated unit of "drive + sealing + valve body + control", which not only meets the sealing requirements of material conveying, but also accurately regulates the flow rate.

[0046] The above are merely exemplary embodiments of this application and are not intended to limit the scope of protection of this application, which is determined by the appended claims.

Claims

1. A carbon black granulation masterbatch external circulation system, characterized in that, This includes product storage tanks, cyclone separators, dust extraction fans, dry granulators, and a central processing system. The outlet of the product storage tank is connected to the inlet of the first airtight valve, the outlet of the first airtight valve is connected to the inlet of the cyclone separator, the outlet of the cyclone separator is connected to the inlet of the second airtight valve, the outlet of the second airtight valve is connected to the inlet of the dry granulator, and the outlet of the dry granulator outputs qualified carbon black granules. The gas outlet of the cyclone separator is connected to the inlet of the dust collector, and the outlet of the dust collector is connected to the reprocessing filter bag. The first and second airtight valves are each equipped with a variable frequency motor and are both signal-connected to the central processing system.

2. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, Both the first and second airtight valves include a motor, a sealing structure unit, a valve body, and a control interface unit. The sealing structure unit includes a packing seal and a nitrogen sealing assembly. The valve body is used to connect to pipelines.

3. The carbon black granulation masterbatch external circulation system according to claim 2, characterized in that, The control interface unit includes an RS485 and / or CAN interface. The control interface unit is linked with the central processing system control module to realize automatic adjustment of the feed rate and ensure the purity and stability of the masterbatch.

4. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The outlet of the cyclone separator is located at its bottom, and the gas outlet of the cyclone separator is located at its top.

5. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The cyclone separator uses negative pressure to draw in raw materials and then uses centrifugal force to separate particles from the airflow, thus achieving gas-solid separation.

6. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The dust extraction fan is equipped with a filtration system to capture and collect fine dust generated during the production process, while also recovering valuable carbon black particles.

7. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The dry granulator is equipped with an independent drive motor and controller. The controller is connected to the central processing system. The dry granulator processes carbon black raw materials into regular masterbatches through mechanical pressure and shear force. At the same time, the controller is used to adjust the process parameters to meet the needs of different types of carbon black.

8. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The dry granulator is also equipped with a conveying pipeline connected to the product storage tank, which is used to convey granular carbon black to the product storage tank for recycling as masterbatch.

9. The carbon black granulation masterbatch external circulation system according to claim 1, characterized in that, The pipeline from the product storage tank to the cyclone separator is also equipped with a discharge port and an air supply port.

10. A method of using a carbon black granulation masterbatch external circulation system as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Open the first airtight valve and put the carbon black granules in the product storage tank into the cyclone separator; S2: Turn on the dust extraction fan to absorb the powdered carbon black in the product storage tank into the bag filter for further processing; S3: The amount of masterbatch entering the dry granulator is adjusted by frequency conversion through the second airtight valve; S4: The central processing system monitors and adjusts the entire process in real time to ensure product quality and production efficiency.

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