A cyclone tower material return and air return device

Abstract

This utility model relates to the field of dye production technology and discloses a cyclone dust return and air recirculation device for a spray tower. It includes a cyclone separator, with a feed pipe fixedly connected to its outer wall, an exhaust pipe fixedly connected to its top, and an airlock fixedly connected to its bottom; a drying spray tower, with a heating pipe fixedly connected to its outer wall; and a dust return fan, with a dust return duct fixedly connected to its output end. In this utility model, by cooperating with the dust return fan and the dust return duct, the solid particles separated by the cyclone separator can be reintroduced into the interior of the drying spray tower. This allows the fixed particles to mix with the fresh liquid material inside the drying spray tower, enabling the fine powder in the exhaust gas to be recycled and formed into larger particles. This reduces costs and increases efficiency. Furthermore, by recycling the fine powder, raw material loss can be reduced, and the uniformity of product particles can be improved.

Description

Technical Field

[0001] This utility model relates to the field of dye production technology, and in particular to a spray tower cyclone material return and air return device. Background Technology

[0002] Dye production is a complex process that integrates chemical synthesis and fine processing. It usually starts with basic chemical raw materials such as benzene, toluene, and naphthalene, and generates dye intermediates through a series of chemical reactions such as sulfonation, nitration, reduction, diazotization, and coupling. Then, through further refining, blending, and processing, the intermediates are transformed into dye products with specific colors and dyeing properties.

[0003] In the subsequent processing stages of dye production, the drying of dye slurry is a crucial step, and the drying spray tower is the core equipment for this process. The dye slurry is first conveyed into the drying spray tower, where it is transformed into fine droplets by a high-pressure atomization device. These droplets then come into full contact with the high-temperature hot airflow inside the tower, causing the moisture in the droplets to evaporate rapidly, ultimately forming dried dye particles. However, the drying process generates waste gas containing a large number of fine dye particles. Direct emission of this gas would not only result in material loss but also pollute the environment. Therefore, a cyclone separator is needed to separate the solid and gas components in the waste gas.

[0004] Although cyclone separators can perform the basic task of separating solids from gases in waste gas, in actual operation, the separated solid particles are often not fully utilized due to their uneven size. This not only results in a direct waste of raw materials but also increases the production costs of enterprises. To address this issue, a spray tower cyclone material return and air return device is proposed. Utility Model Content

[0005] This invention provides a spray tower cyclone material return and air return device, which aims to solve the problem mentioned in the prior art that "solid particles after solid-gas separation are often not fully utilized due to uneven size".

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a spray tower cyclone material return and air recirculation device, comprising: A cyclone separator, wherein a feed pipe is fixedly connected to the outer wall of the cyclone separator, an exhaust pipe is fixedly connected to the top of the cyclone separator, and an airlock is fixedly connected to the bottom of the cyclone separator; A drying spray tower, wherein a heating pipe is fixedly connected to the outer wall of the drying spray tower; A reverse powder blower is provided, with a reverse powder duct fixedly connected to its output end. The end of the reverse powder duct away from the reverse powder blower is fixedly connected to the top of the drying spray tower. A material leveling mechanism is provided at the end of the reverse powder duct inside the drying spray tower.

[0007] As a further description of the above technical solution: The material leveling mechanism includes a threaded sleeve, which is threadedly connected to the outer wall of the anti-powder air duct, and a material leveling frame is fixedly connected to the bottom of the threaded sleeve.

[0008] As a further description of the above technical solution: The side wall of the material leveling frame is provided with slots, and at least three sets of slots are provided in a circular array with the central axis of the threaded sleeve as the origin.

[0009] As a further description of the above technical solution: The material leveling frame has a boss fixedly connected inside, and a conical block is fixedly connected to the top of the boss.

[0010] As a further description of the above technical solution: The diameter of the conical block gradually increases from top to bottom, and the conical block and the threaded sleeve are coaxial.

[0011] As a further description of the above technical solution: The feed end of the airlock is connected to the interior of the cyclone separator, and the discharge end of the airlock is fixedly connected to the outer wall of the anti-powder air duct and is connected to the interior of the anti-powder air duct.

[0012] This utility model has the following beneficial effects: 1. In this utility model, by combining the anti-powder fan and the anti-powder duct, the solid particles separated by the cyclone separator can be reintroduced into the interior of the drying spray tower, thereby mixing the fixed particles with the fresh liquid inside the drying spray tower. This allows the fine powder in the exhaust gas to be recycled and formed into larger particles, thus reducing costs and increasing efficiency. Furthermore, by recycling the fine powder, raw material loss can be reduced and the uniformity of product particles can be improved.

[0013] 2. In this utility model, through the design of the uniform material mechanism, the solids introduced into the drying spray tower by the reverse powder air duct can be evenly spread inside the drying spray tower, so that they can be evenly mixed with the fresh liquid material, further improving the uniformity of product particles. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional structural diagram of the drying spray tower of this utility model; Figure 3 This is a schematic diagram of the overall structure of the material leveling frame of this utility model; Figure 4 This is a cross-sectional structural diagram of the material leveling frame of this utility model.

[0015] Legend: 1. Cyclone separator; 2. Drying spray tower; 3. Anti-powder blower; 4. Feed pipe; 5. Exhaust pipe; 6. Air lock; 7. Heating pipe; 8. Anti-powder duct; 9. Material leveling mechanism; 91. Threaded sleeve; 92. Material leveling frame; 93. Groove; 94. Boss; 95. Conical block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a spray tower cyclone material return and air device, comprising a cyclone separator 1, a drying spray tower 2 and a return air fan 3; The outer wall of the cyclone separator 1 is fixedly connected to the feed pipe 4. Before operation, the feed pipe 4 needs to be connected to the inside of the drying spray tower 2 through a pipeline so that the cyclone separator 1 can draw the exhaust gas inside the drying spray tower 2 into its interior for solid-gas separation. The top of the cyclone separator 1 is fixedly connected to the exhaust pipe 5, through which the exhaust gas can be discharged from the cyclone separator 1. The bottom of the cyclone separator 1 is fixedly connected to the airlock 6, which is generally composed of a rotary valve to prevent gas backflow during powder return. The airlock 6 can be a YC-300 rubber airlock valve. The feed end of the airlock 6 is connected to the interior of the cyclone separator 1, and the discharge end of the airlock 6 is fixedly connected to the outer wall of the powder return duct 8 and connected to the interior of the powder return duct 8. The solid particles separated by the cyclone separator 1 will gather at the dust discharge port at the bottom of the equipment under the action of gravity and finally enter the interior of the powder return duct 8. The airlock 6 can block the reverse flow of airflow inside the powder return duct 8 and ensure stable separation pressure. A heating pipe 7 is fixedly connected to the outer wall of the drying spray tower 2. Hot air is injected into the interior of the drying spray tower 2 through the heating pipe 7, which causes the moisture in the droplets to evaporate rapidly. The dried fuel particles will fall to the bottom of the drying spray tower 2. The output end of the anti-powder blower 3 is fixedly connected to the anti-powder duct 8. The end of the anti-powder duct 8 away from the anti-powder blower 3 is fixedly connected to the top of the drying spray tower 2. When the anti-powder blower 3 is started, it injects high-pressure gas into the anti-powder duct 8, which creates a negative pressure inside the anti-powder duct 8. Through the siphon principle, the powder inside the anti-powder duct 8 is carried back into the drying spray tower 2. A material leveling mechanism 9 is provided at the end of the anti-powder duct 8 located inside the drying spray tower 2.

[0018] Reference Figure 2 - Figure 4The material leveling mechanism 9 includes a threaded sleeve 91, which is threadedly connected to the outer wall of the anti-powder air duct 8. A material leveling frame 92 is fixedly connected to the bottom of the threaded sleeve 91. Solid particles blown into the drying spray tower 2 by the anti-powder air duct 8 will enter the interior of the material leveling frame 92 through the threaded sleeve 91. The side wall of the material leveling frame 92 is provided with slots 93. At least three sets of slots 93 are arranged in a circular array with the central axis of the threaded sleeve 91 as the origin. Under the air pressure of the anti-powder air duct 8, the solid particles around the boss 94 will be blown out of the material leveling frame 92 through the slots 93, so that the recovered fine particles can be evenly diffused inside the drying spray tower 2, further improving the uniformity of the product particles. Reference Figure 3 - Figure 4 The uniform material frame 92 is fixedly connected to a boss 94, and a conical block 95 is fixedly connected to the top of the boss 94. The diameter of the conical block 95 gradually increases from top to bottom. The conical block 95 and the threaded sleeve 91 are coaxial. The conical structure of the conical block 95 can guide the solid particles entering the uniform material frame 92, so that the solid particles slide evenly around the boss 94, so that the solid particles are evenly spread inside the drying spray tower 2.

[0019] Working principle: During operation, the dye slurry is converted into fine droplets by a high-pressure atomizer and delivered to the interior of the drying tower 2. Hot air is then injected into the drying tower 2 through the heating pipe 7, causing the moisture in the droplets to evaporate rapidly. The dried fuel particles fall to the bottom of the drying tower 2. Simultaneously, the feed pipe 4 is connected to the drying tower 2 through a pipeline, and the cyclone separator 1 is activated. The cyclone separator 1 draws the exhaust gas from inside the drying tower 2 into its interior. The cyclone separator 1 uses centrifugal force to cause the solids in the exhaust gas to gradually slide downwards. The exhaust gas is discharged from the cyclone separator 1 through the exhaust pipe 5. At this time, the solids that have slipped down inside the cyclone separator 1 will fall into the interior of the anti-powder duct 8 through the air lock 6. At the same time, the anti-powder blower 3 is started to inject high-pressure gas into the interior of the anti-powder duct 8, creating a negative pressure inside the anti-powder duct 8. Through the siphon principle, the powder inside the anti-powder duct 8 is carried back into the interior of the drying spray tower 2. This allows the solid particles in the exhaust gas to re-enter the interior of the drying spray tower 2 and mix with the fresh liquid inside the drying spray tower 2, so that the fine powder can be recycled and formed into larger particles. By recycling the fine powder, the loss of raw materials can be reduced and the uniformity of product particles can be improved.

[0020] Solid particles blown into the drying tower 2 by the anti-powder air duct 8 will enter the uniform material frame 92 through the threaded sleeve 91. At this time, the conical structure of the conical block 95 can guide the solid particles entering the uniform material frame 92, so that the solid particles slide evenly around the boss 94. At the same time, under the air pressure of the anti-powder air duct 8, the solid particles around the boss 94 will be blown out of the uniform material frame 92 through the slot 93. This allows the recovered fine particles to be evenly diffused inside the drying tower 2, so that they can be evenly mixed with the fresh liquid, further improving the uniformity of the product particles.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spray tower cyclone material return and air recirculation device, characterized in that, include: Cyclone separator (1), with a feed pipe (4) fixedly connected to the outer wall of the cyclone separator (1), an exhaust pipe (5) fixedly connected to the top of the cyclone separator (1), and an air lock (6) fixedly connected to the bottom of the cyclone separator (1). Drying spray tower (2), the outer wall of which is fixedly connected to a heating pipe (7); A reverse powder blower (3) is fixedly connected to a reverse powder duct (8) at its output end. The end of the reverse powder duct (8) away from the reverse powder blower (3) is fixedly connected to the top of the drying spray tower (2). A material leveling mechanism (9) is provided at the end of the reverse powder duct (8) inside the drying spray tower (2).

2. The spray tower cyclone material return and air recirculation device according to claim 1, characterized in that: The material leveling mechanism (9) includes a threaded sleeve (91), which is threadedly connected to the outer wall of the anti-powder air duct (8), and a material leveling frame (92) is fixedly connected to the bottom of the threaded sleeve (91).

3. The spray tower cyclone material return and air recirculation device according to claim 2, characterized in that: The side wall of the uniform material frame (92) is provided with slots (93), and the slots (93) are arranged in at least three sets in a circular array with the central axis of the threaded sleeve (91) as the origin.

4. The spray tower cyclone material return and air recirculation device according to claim 2, characterized in that: The inside of the material leveling frame (92) is fixedly connected to a boss (94), and the top of the boss (94) is fixedly connected to a conical block (95).

5. The spray tower cyclone material return and air recirculation device according to claim 4, characterized in that: The diameter of the conical block (95) gradually increases from top to bottom, and the conical block (95) and the threaded sleeve (91) are coaxial.

6. The spray tower cyclone material return and air recirculation device according to claim 1, characterized in that: The feed end of the airlock (6) is connected to the interior of the cyclone separator (1), and the discharge end of the airlock (6) is fixedly connected to the outer wall of the anti-powder air duct (8) and is connected to the interior of the anti-powder air duct (8).

Images