A multi-purpose loading system for catalyst intermediates

Abstract

The utility model discloses a kind of multipurpose feeding system of catalyst intermediate, including the vacuum conveying assembly for conveying catalyst intermediate, still including the three-way feeding pipe assembly of being arranged at the inlet one end of vacuum conveying assembly, the stirring bin assembly of being arranged at the outlet one end of vacuum conveying assembly, and the dust removal assembly of being arranged on stirring bin assembly.The utility model opens pneumatic butterfly valve when carrying out crushing feeding, pneumatic ball valve, closes manual gate valve, material can be realized first crushing then stirring feeding;When carrying out direct suction mode, open manual gate valve, pneumatic ball valve, close pneumatic butterfly valve, suction port is communicated with catalyst intermediate storage bin or inserted into material bag, direct feeding can be carried out;When needing mixing processing, then simultaneously open pneumatic butterfly valve, manual gate valve, pneumatic ball valve, crushing feeding and direct feeding mixing can be realized, and mode switching time <30 seconds, feeding capacity reaches 3t / hour, and mixing time is shortened by 40%.

Description

Technical Field

[0001] This utility model relates to the field of catalyst production equipment technology, and in particular to a multi-purpose feeding system for catalyst intermediates. Background Technology

[0002] Catalysts act as "regulators" of chemical reactions, accelerating them, significantly lowering activation energies, and allowing reactions to proceed rapidly under milder conditions (such as lower temperatures and pressures), thereby improving production efficiency and saving energy. They also selectively direct reactions, guiding them towards the formation of specific target products, suppressing side reactions, improving product purity and atom economy from the source, and reducing waste generation. Furthermore, they are self-circulating; at the end of the reaction, the catalyst's chemical properties and quality remain unchanged, allowing for reuse. Catalysts are the cornerstone of modern chemical industry, enabling highly efficient, energy-saving, and clean chemical manufacturing through a "leveraging" approach.

[0003] In existing catalyst production processes, the feeding system generally suffers from the following problems: 1. The crushed material and the directly fed material need to be in separate systems, resulting in high equipment costs; 2. Switching between different material sources is complex and results in long downtime. 3. The feeding process causes serious dust pollution. Catalyst materials are generally expensive, and dust pollution and loss will lead to a significant increase in costs. 4. Insufficient uniformity of material mixing.

[0004] A continuous vacuum feeder of intermittent row type is disclosed in Chinese patent document CN203294801U. This feeder includes a feeding device and a discharging device located below the feeding device. The feeding device includes a feeding bin, a pneumatic suction butterfly valve for feeding located on the side wall of the feeding bin, a separation cone located inside the feeding bin, a filter bin located above the feeding bin, and an identical air duct mechanism arranged symmetrically on the left and right sides above the separation cone. The two air duct mechanisms are connected to an electric vacuum pump via vacuum tubes. The electric vacuum pump is electrically connected to a control box. This invention enables continuous and sustained vacuum material conveying without distance limitations, featuring high conveying efficiency and high vacuum source utilization. It also maintains a uniform and smooth flow of material during both suction and discharge, and eliminates dust leakage and safety hazards. However, the switching operation for different material sources is complex, and the downtime is long.

[0005] A novel catalyst pulverizing system and its pulverizing process are disclosed in Chinese patent document CN112916173A. This novel catalyst pulverizing system and its pulverizing process include a coarse pulverizing device and an ultrafine pulverizing device, connected by a screw conveyor. The coarse pulverizing device includes a crusher and a first dust collector, while the ultrafine pulverizing device includes a pulverizer, a second dust collector, and an induced draft fan. The pulverizer is connected to the screw conveyor via a pipeline, and a classifier is connected downstream of the pulverizer. The upper end of the classifier is connected to the second dust collector, which has a fine powder discharge port below it. This invention employs a two-stage pulverizing design. The coarse pulverizing device is responsible for the initial pulverization, crushing waste into coarse powder to reduce the burden on the subsequent pulverization. The ultrafine pulverizing device is designed with a filtration and re-pulverization structure, ensuring that only powder meeting the particle size requirements is output. Larger particles are filtered and re-pulverized, guaranteeing stable output quality and ensuring that the output powder meets raw material standards. It also improves the overall utilization rate of waste. However, this novel catalyst pulverizing system and its pulverizing process suffers from insufficient material mixing uniformity.

[0006] To address the shortcomings of the existing technology, providing a multi-purpose feeding system for catalyst intermediates is a problem worthy of research. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of requiring separate systems for crushed materials and direct feeding materials, which result in high equipment costs. It provides a multi-purpose feeding system for catalyst intermediates, achieving the technical effect of combining crushing feeding mode and direct feeding mode.

[0008] The objective of this utility model is achieved through the following technical solution: A multi-purpose feeding system for catalyst intermediates includes a vacuum conveying assembly for conveying catalyst intermediates, a three-way feeding pipe assembly disposed at one end of the inlet of the vacuum conveying assembly, a stirring chamber assembly disposed at one end of the outlet of the vacuum conveying assembly, and a dust removal assembly disposed on the stirring chamber assembly.

[0009] Optionally, the three-way feeding pipe assembly includes a three-way pipe connected to the vacuum conveying assembly, and a crusher and a suction port respectively connected to the other two ports of the three-way pipe; A pneumatic butterfly valve is installed on the crusher pipeline; The suction port is connected to the catalyst intermediate storage silo. A manual gate valve is installed on the suction port pipe. By setting up a three-way feeding pipe assembly that connects the crusher and the suction port respectively, during crushing and feeding, the pneumatic butterfly valve and pneumatic ball valve are opened, the manual gate valve is closed, and the crusher and Roots vacuum pump are started to achieve material crushing followed by mixing and feeding. In direct feeding mode, the manual gate valve and pneumatic ball valve are opened, the pneumatic butterfly valve is closed, and the suction port is connected to the catalyst intermediate storage silo or a material bag is inserted for direct feeding. When mixing is required, the pneumatic butterfly valve, manual gate valve, and pneumatic ball valve are opened simultaneously to achieve a combination of crushing and direct feeding. The mode switching time is less than 30 seconds, the feeding capacity reaches 3t / hour, and the mixing time is reduced by 40%. Furthermore, both the pneumatic butterfly valve and the manual gate valve are electrically connected to the PLC controller.

[0010] Optionally, both the pneumatic butterfly valve and the manual gate valve are electrically connected to the PLC controller. The suction port is equipped with a quick-connect flange, which is quickly connected to the catalyst intermediate storage bin through the quick-connect flange. This enables remote automatic control of the valve and quick connection of the suction port, reducing manual intervention and connection time, and improving feeding speed and ease of operation.

[0011] Optionally, the three-way feeding pipe assembly also includes a pneumatic hammer located at the intersection of the three-way pipes and a pneumatic ball valve located on the main pipe of the three-way pipes, to prevent pipe blockage and keep the material flow smooth, reduce downtime maintenance caused by blockage, and ensure the continuity and reliability of the conveying process.

[0012] Optionally, the vacuum conveying assembly includes a Roots vacuum pump, a cyclone separator, and a pulse backflush filter connected in series. By setting up a closed vacuum conveying assembly, the concentration of conveyed dust is less than 5 mg / m³, and the dust collected by the dust removal system can be directly reused.

[0013] Optionally, the Roots vacuum pump is connected to the main pipe of the three-way pipe, and the pulse backflushing filter is connected to the feed inlet of the mixing chamber assembly.

[0014] Optionally, the mixing chamber assembly includes a conical silo and a material level sensor installed on the side wall of the conical silo to monitor the material level in real time, realize automatic feeding and stop control, prevent overflow or empty silo, and improve the system's automation level and operational stability.

[0015] Optionally, the conical hopper is equipped with a double helix agitator with a rotation speed of 15-30 rpm and a stirring shaft tilt angle of 15°-25°, to achieve efficient mixing and homogenization of materials, with a mixing uniformity C value ≤5%, shortening the mixing time by 40%, and improving the quality consistency of catalyst intermediates.

[0016] Optionally, the dust removal assembly includes a bag filter connected to the mixing chamber assembly, a centrifugal induced draft fan and a dust recovery pipeline connected in series with the bag filter, and a wet scrubber installed at the outlet of the centrifugal induced draft fan. A dust recovery pipeline is installed between the centrifugal induced draft fan and the wet dust collector. By adopting a parallel design of bag filter and wet dust collector, combined with centrifugal induced draft fan and dust recovery pipeline, efficient dust collection and recycling can be achieved, with a dust recovery rate of ≥98%, reducing material waste and environmental pollution, and lowering production costs.

[0017] Positive and beneficial effects: 1. This multi-purpose feeding system for catalyst intermediates, through the installation of a three-way feeding pipe assembly connecting the crusher and the suction port respectively, allows for material feeding by first crushing and then mixing during crushing. In crushing mode, the pneumatic butterfly valve and pneumatic ball valve are opened, the manual gate valve is closed, and the crusher and Roots vacuum pump are started. In direct suction mode, the manual gate valve and pneumatic ball valve are opened, the pneumatic butterfly valve is closed, and the suction port is connected to the catalyst intermediate storage silo or a material bag is inserted for direct feeding. When mixing is required, the pneumatic butterfly valve, manual gate valve, and pneumatic ball valve are opened simultaneously to achieve a combination of crushing and direct feeding. The mode switching time is less than 30 seconds, the feeding capacity reaches 3t / hour, and the mixing time is reduced by 40%.

[0018] 2. The multi-purpose feeding system for the catalyst intermediate adopts a parallel design of bag filter and wet dust collector, combined with centrifugal induced draft fan and dust recovery pipeline, to achieve efficient dust collection and recycling, with a dust recovery rate of ≥98%, reducing material waste and environmental pollution, and lowering production costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the system structure of this utility model.

[0020] In the diagram: 100-Three-way feed pipe assembly, 101-Crusher, 102-Suction port, 103-Pneumatic hammer, V1-Pneumatic butterfly valve, V2-Manual gate valve, V3-Pneumatic ball valve; 200-Vacuum delivery assembly, 201-Roots vacuum pump, 202-Cyclone separator, 203-Pulse backflush filter; 300 - Mixing bin assembly; 301 - Conical hopper; 302 - Level sensor; 400-Dust removal components, 401-Bag filter dust collector, 402-Centrifugal induced draft fan, 403-Dust recovery pipeline, 404-Wet scrubber, 405-Differential pressure alarm. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] Example 1 like Figure 1 As shown, a multi-purpose feeding system for catalyst intermediates includes a vacuum conveying assembly 200 for conveying catalyst intermediates, a three-way feeding pipe assembly 100 disposed at one end of the inlet of the vacuum conveying assembly 200, a stirring chamber assembly 300 disposed at one end of the outlet of the vacuum conveying assembly 200, and a dust removal assembly 400 disposed on the stirring chamber assembly 300.

[0023] like Figure 1 As shown, the three-way feeding pipe assembly 100 includes a three-way pipe connected to the vacuum conveying assembly 200, and a crusher 101 and a suction port 102 respectively connected to the other two ports of the three-way pipe. A pneumatic butterfly valve V1 is installed on the crusher 101 pipeline; The suction port 102 is connected to the catalyst intermediate storage silo. A manual gate valve V2 is installed on the suction port 102 pipe. By setting up a three-way feeding pipe assembly 100 that connects the crusher 101 and the suction port 102 respectively, during crushing and feeding, the pneumatic butterfly valve V1 and pneumatic ball valve V3 are opened, the manual gate valve V2 is closed, and the crusher 101 and the Roots vacuum pump 201 are started, so that the material can be crushed first and then mixed and fed. In the direct feeding mode, the manual gate valve V2 and pneumatic ball valve V3 are opened, the pneumatic butterfly valve V1 is closed, and the suction port 102 is connected to the catalyst intermediate storage silo or a material bag is inserted, so that direct feeding can be carried out. When mixing is required, the pneumatic butterfly valve V1, manual gate valve V2, and pneumatic ball valve V3 are opened at the same time, so that crushing and feeding and direct feeding can be mixed. The mode switching time is less than 30 seconds, the feeding capacity reaches 3t / hour, and the mixing time is shortened by 40%. Furthermore, both the pneumatic butterfly valve V1 and the manual gate valve V2 are electrically connected to the PLC controller.

[0024] Both the pneumatic butterfly valve V1 and the manual gate valve V2 are electrically connected to the PLC controller. The suction port 102 is equipped with a quick-connect flange, which allows for quick connection to the catalyst intermediate storage silo. This enables remote automatic control of the valves and quick connection of the suction port, reducing manual intervention and connection time, and improving feeding speed and ease of operation.

[0025] like Figure 1As shown, the three-way feeding pipe assembly 100 also includes a pneumatic hammer 103 located at the intersection of the three-way pipes and a pneumatic ball valve V3 located on the main pipe of the three-way pipes, which prevent pipe blockage and keep the material flow smooth, reduce downtime maintenance caused by blockage, and ensure the continuity and reliability of the conveying process.

[0026] Example 2 like Figure 1 As shown, the vacuum conveying assembly 200 includes a Roots vacuum pump 201, a cyclone separator 202, and a pulse backflush filter 203 connected in series. By setting up a closed vacuum conveying assembly, the concentration of conveyed dust is <5mg / m³, and the dust collected by the dust removal system can be directly reused.

[0027] The Roots vacuum pump 201 is connected to the main pipe of the three-way pipe, and the pulse backflush filter 203 is connected to the feed inlet of the mixing chamber assembly 300.

[0028] like Figure 1 As shown, the mixing chamber assembly 300 includes a conical hopper 301 and a material level sensor 302 installed on the side wall of the conical hopper 301 to monitor the material level in real time, realize automatic feeding and stop control, prevent overflow or empty hopper, and improve the system's automation level and operational stability.

[0029] The conical silo 301 is equipped with a double helical stirrer with a rotation speed of 15-30 rpm and a stirring shaft tilt angle of 15°-25°, which realizes efficient mixing and homogenization of materials, with a mixing uniformity CV value ≤5%, shortening the mixing time by 40% and improving the quality consistency of catalyst intermediates.

[0030] Example 3 like Figure 1 As shown, the dust removal assembly 400 includes a bag filter 401 connected to the mixing chamber assembly 300, a centrifugal induced draft fan 402 and a dust recovery pipe 403 connected in series with the bag filter 401, and a wet dust collector 404 installed at the outlet of the centrifugal induced draft fan 402. A dust recovery pipe 403 is installed between the centrifugal induced draft fan 402 and the wet dust collector 404. By adopting the parallel design of the bag dust collector 401 and the wet dust collector 404, in conjunction with the centrifugal induced draft fan 402 and the dust recovery pipe 403, efficient dust collection and recycling can be achieved, with a dust recovery rate of ≥98%, reducing material waste and environmental pollution, and lowering production costs.

[0031] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A multi-purpose feeding system for catalyst intermediates, comprising a vacuum conveying assembly (200) for conveying catalyst intermediates, characterized in that: It also includes a three-way feeding pipe assembly (100) disposed at one end of the inlet of the vacuum conveying assembly (200), a mixing chamber assembly (300) disposed at one end of the outlet of the vacuum conveying assembly (200), and a dust removal assembly (400) disposed on the mixing chamber assembly (300).

2. The multi-purpose feeding system for catalyst intermediates according to claim 1, characterized in that: The three-way feeding pipe assembly (100) includes a three-way pipe connected to the vacuum conveying assembly (200), and a crusher (101) and a suction port (102) respectively connected to the other two ports of the three-way pipe. A pneumatic butterfly valve (V1) is installed on the pipeline of the crusher (101); The suction port (102) is connected to the catalyst intermediate storage silo, and a manual gate valve (V2) is installed on the suction port (102) pipe.

3. The multi-purpose feeding system for catalyst intermediates according to claim 2, characterized in that: Both the pneumatic butterfly valve (V1) and the manual gate valve (V2) are electrically connected to the PLC controller. The suction port (102) is equipped with a quick-connect flange, and the suction port (102) is quickly connected to the catalyst intermediate storage bin through the quick-connect flange.

4. The multi-purpose feeding system for catalyst intermediates according to claim 2, characterized in that: The three-way feeding pipe assembly (100) also includes a pneumatic hammer (103) located at the intersection of the three-way pipes, and a pneumatic ball valve (V3) located on the main pipe of the three-way pipe.

5. The multi-purpose feeding system for catalyst intermediates according to claim 1, characterized in that: The vacuum delivery assembly (200) includes a Roots vacuum pump (201), a cyclone separator (202), and a pulse backflush filter (203) connected in series.

6. The multi-purpose feeding system for catalyst intermediates according to claim 5, characterized in that: The Roots vacuum pump (201) is connected to the main pipe of the three-way pipe, and the pulse backflush filter (203) is connected to the feed inlet of the mixing chamber assembly (300).

7. The multi-purpose feeding system for catalyst intermediates according to claim 1, characterized in that: The mixing chamber assembly (300) includes a conical hopper (301) and a level sensor (302) disposed on the side wall of the conical hopper (301).

8. The multi-purpose feeding system for catalyst intermediates according to claim 7, characterized in that: The conical hopper (301) is equipped with a double helix agitator, the rotation speed of the double helix agitator is 15-30 rpm, and the tilt angle of the agitator shaft is 15°-25°.

9. A multi-purpose feeding system for catalyst intermediates according to claim 1, characterized in that: The dust removal assembly (400) includes a bag filter (401) connected to the mixing chamber assembly (300), a centrifugal induced draft fan (402) and a dust recovery pipeline (403) connected in series with the bag filter (401), and a wet dust collector (404) installed at the outlet of the centrifugal induced draft fan (402). A dust recovery pipe (403) is provided between the centrifugal induced draft fan (402) and the wet dust collector (404).

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