A cyclone feeder for a lime digester and slag remover

Abstract

This utility model relates to the field of feeding technology for causticizing lime digestion and slag removal machines in papermaking alkali recovery, specifically a cyclone feeder for a lime digestion and slag removal machine. The feeder includes a cylinder body positioned between the lime digestion and slag removal machine and the lime feeding assembly. A green liquor inlet is also provided on the cylinder body. The cylinder body comprises an upper cylinder and a lower cylinder body. The lower cylinder body includes an inverted conical cylinder and an upright conical cylinder. The connection between the inverted and upright conical cylinders forms a neck. The bottom end of the upright conical cylinder is below the liquid surface in the lime digestion and slag removal machine. This cyclone feeder for a lime digestion and slag removal machine ensures thorough mixing of quicklime and green liquor while solving the problem of lime dust pollution. It reduces the processing load on the scrubber and decreases the formation of sludge within the scrubber. The structure is simple, with no maintenance or operating parts, resulting in low manufacturing costs. It is applicable to feeding lime digestion and slag removal machines in the causticizing section of alkali recovery in the papermaking industry and can also be used in similar solid-liquid mixing scenarios in other industries.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology for lime digestion and slag removal machines, and in particular to a cyclone feeder for lime digestion and slag removal machines. Background Technology

[0002] The original feeding method for the alkali recovery caustic soda digester was that the green liquor and quicklime entered the digester through two separate inlets. The quicklime had to fall below the liquid surface within the digester to mix with the green liquor. High concentrations of lime dust floated in the space between the digester cover and the liquid surface. This dust was treated by a scrubber mounted on the digester and then released into the atmosphere. This not only reduced mixing efficiency but also increased the scrubber's processing load, leading to increased dust content in the exhaust and causing air pollution. Furthermore, the increased processing load on the scrubber affected its effectiveness, making it prone to sludge buildup, which could clog the sludge discharge pipes and increase solid pollutant emissions.

[0003] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] To address the aforementioned shortcomings, the purpose of this invention is to provide a cyclone feeder for a lime digester and slag remover, which solves the problems of dust pollution and scaling.

[0005] To achieve the above objectives, this utility model provides a cyclone feeder for a lime slag extractor, comprising a cylinder body disposed between the lime slag extractor and the lime feeding assembly; the cylinder body is also provided with a green liquor inlet;

[0006] The cylinder body includes an upper cylinder body and a lower cylinder body. The lower cylinder body includes an inverted conical cylinder and an upright conical cylinder. The connection between the inverted conical cylinder and the upright conical cylinder forms a neck. The bottom end face of the upright conical cylinder is located below the liquid surface in the lime digestion and slag removal machine.

[0007] As a preferred technical solution, the green liquid inlet is arranged along the tangent of the upper cylinder.

[0008] As a preferred technical solution, the inverted conical cylinder is located outside the lime digestion and slag removal machine, and the upright conical cylinder is located inside the lime digestion and slag removal machine.

[0009] As a preferred technical solution, the top of the upper cylinder is provided with at least one inspection port.

[0010] As a preferred technical solution, the upper cylinder is provided with an inspection port mounting port, the inspection port mounting port is connected to a detachable viewing window, and an inspection port sealing ring is provided between the inspection port mounting port and the viewing window.

[0011] As a preferred technical solution, the lime digestion and slag removal machine is connected to the cylinder through a feed pipe. The feed pipe includes a first feed pipe connected to the lime feed assembly and a second feed pipe connected to the cylinder. A feed pipe sealing ring is provided at the connection between the first feed pipe and the second feed pipe.

[0012] As a preferred technical solution, the upper cylinder and the inverted conical cylinder are detachably connected, and a cylinder sealing ring is provided at the connection between the upper cylinder and the inverted conical cylinder.

[0013] As a preferred technical solution, the inspection port sealing ring, the material pipe sealing ring, and the cylinder sealing ring are all made of acid and alkali resistant rubber.

[0014] As a preferred technical solution, the upper cylinder is cylindrical, and the feed pipe is connected to the center of the top of the upper cylinder.

[0015] As a preferred technical solution, the lime digestion and slag removal machine is equipped with at least one set of stirring paddles, which are mounted on a rotating shaft and driven to rotate by a stirring motor; the lime feeding assembly includes a screw feeder, which is connected to a feeding motor, and the feeding motor provides power for the rotation of the screw feeder.

[0016] This utility model provides a cyclone feeder for a lime digestion and slag removal machine, which effectively utilizes the principle of fluid cyclone to reduce lime dust pollution while fully mixing quicklime and green liquor. It has a simple structure, no maintenance moving parts, and low manufacturing cost. It can be used for feeding lime digestion and slag removal machines in the alkali recovery and caustic chemical section of the paper industry, and can also be used in other industries for similar solid-liquid mixing into reactors. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the installation position of the cyclone feeder for the lime digestion and slag removal machine of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the cyclone feeder for the lime digestion and slag removal machine of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of M;

[0020] Figure 4 for Figure 2 Enlarged view of N in the middle;

[0021] Figure 5 for Figure 2 Diagram of direction A in the middle;

[0022] In the picture:

[0023] 1-Cylinder body, 11-Upper cylinder body, 12-Lower cylinder body, 121-Inverted conical cylinder, 122-Upright conical cylinder, 123-Cylinder body sealing ring, 13-Feed pipe, 131-First feed pipe, 132-Second feed pipe, 133-Feed pipe sealing ring, 14-Green liquor inlet, 15-Inspection port, 151-Viewing window, 152-Inspection port installation port, 153-Inspection port sealing ring, 16-Bolt, 2-Lime digestion and slag removal machine, 3-Lime feeding assembly, 4-Agitator, 5-Feeding motor, 6-Agitator motor. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0025] Example 1:

[0026] See Figure 1 and Figure 2 This utility model provides a cyclone feeder for a lime slagging and slag-removing machine, including a cylinder 1. The cylinder 1 is disposed between the lime slagging and slag-removing machine 2 and the lime feeding assembly 3, connecting the three. The lime slagging and slag-removing machine 2 conveys quicklime to the cylinder 1 through a feed pipe 13. The cylinder 1 is also provided with a green liquid inlet 14, which is used to convey green liquid into the cylinder 1. The green liquid and quicklime mix in the cylinder 1 and then enter the lime slagging and slag-removing machine 2.

[0027] The lime digestion and slag removal machine 2 is equipped with at least one set of stirring paddles 4, which are mounted on a rotating shaft and driven to rotate by a stirring motor 6. The lime feeding assembly 3 includes a screw feeder, which is connected to a feeding motor 5, which provides the power for the screw feeder to rotate.

[0028] The cylinder 1 includes an upper cylinder 11 and a lower cylinder 12. The lower cylinder 12 includes an inverted conical cylinder 121 and an upright conical cylinder 122. The upper cylinder 11, the inverted conical cylinder 121, and the upright conical cylinder 122 are arranged sequentially from top to bottom, and the connection between the inverted conical cylinder 121 and the upright conical cylinder 122 forms a neck. Preferably, the inverted conical cylinder 121 is located outside the lime digestion and slag removal machine 2, and the upright conical cylinder 122 is located inside the lime digestion and slag removal machine 2. The bottom end face of the upright conical cylinder 122 is below the liquid surface in the lime digestion and slag removal machine 2, that is, the lower part of the upright conical cylinder 122 is submerged below the liquid surface in the lime digestion and slag removal machine 2.

[0029] The upper cylinder 11 is cylindrical, and the feed pipe 13 is connected to the center of the top of the upper cylinder 11. Specifically, a feed inlet can be opened at the top of the upper cylinder 11 to accommodate the feed pipe 13.

[0030] See Figure 5 The green liquid inlet 14 is arranged along the tangent of the upper cylinder 11.

[0031] The green liquid enters the cylinder 1 along the tangent of the upper cylinder 11 and moves spirally downward along the inner wall of the cylinder 1. The quicklime enters from the feed port at the center of the top of the cylinder 1 and collides and mixes vertically with the swirling green liquid under the action of gravity. They fall together in a spiral state. In the inverted conical cylinder 121, as the neck contracts, the radius of operation decreases and the speed of movement increases, which promotes the mixing of the solid and liquid phases. As the fluid moves downward, it passes through the neck to the upright conical cylinder 122, where the radius of operation increases and the speed of movement decreases. It enters the liquid interior of the lime digestion and slag removal machine 2 with a smaller impact. Since the upright conical cylinder 122 is submerged below the liquid surface in the lime digestion and slag removal machine 2, the problem of lime dust is avoided.

[0032] See Figures 2 to 4 The feed pipe 13 includes a first feed pipe 131 connecting to the lime feed assembly 3 and a second feed pipe 132 connecting to the cylinder 1. The first feed pipe 131 and the second feed pipe 132 are connected by bolts 16. To increase the airtightness between the two and prevent quicklime from flying out from the gap between them, a feed pipe sealing ring 133 made of acid and alkali resistant rubber is provided at the connection between the first feed pipe 131 and the second feed pipe 132.

[0033] The feed pipe 13 is inserted into the upper cylinder 11. Furthermore, the bottom of the second feed pipe 132 extends into the interior of the upper cylinder 11.

[0034] The top of the upper cylinder 11 is also provided with an inspection port 15. At least one inspection port 15 is provided, and preferably two are provided, such as... Figure 2 As shown. The setting of inspection port 15 facilitates observation of the mixing of quicklime and green liquid inside cylinder 1.

[0035] See Figure 3 The upper cylinder 11 is provided with an inspection port mounting port 152, which is connected to a detachable viewing window 151. The inspection port mounting port 152 and the viewing window 151 are also connected by bolts 16. Similarly, in order to ensure the airtightness of both and prevent quicklime from flying out from the inspection port 15, an inspection port sealing ring 153 is provided between the inspection port mounting port 152 and the viewing window 151.

[0036] See Figure 2The upper cylinder 11 and the inverted conical cylinder 121 are detachably connected, and a cylinder sealing ring 123 is provided at the connection between the upper cylinder 11 and the inverted conical cylinder 121.

[0037] This utility model provides a cyclone feeder for a lime digestion and slag removal machine, which effectively utilizes the principle of fluid cyclone to reduce lime dust pollution while fully mixing quicklime and green liquor. It has a simple structure, no maintenance moving parts, and low manufacturing cost. It can be used for feeding lime digestion and slag removal machines in the alkali recovery and caustic chemical section of the paper industry, and can also be used in other industries for similar solid-liquid mixing into reactors.

[0038] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A lime slaker with a cyclone feeder, characterized in that, Includes a cylinder (1), which is located between the lime digestion and slag removal machine (2) and the lime feeding assembly (3); the cylinder (1) is also provided with a green liquid inlet (14). The cylinder (1) includes an upper cylinder (11) and a lower cylinder (12). The lower cylinder (12) includes an inverted conical cylinder (121) and an upright conical cylinder (122). The connection between the inverted conical cylinder (121) and the upright conical cylinder (122) forms a neck. The bottom end face of the upright conical cylinder (122) is below the liquid surface in the lime digester (2).

2. A cyclone feeder for lime slaker according to claim 1, wherein, The green liquid inlet (14) is set along the tangent of the upper cylinder (11).

3. A cyclone feeder for lime slaker according to claim 1, wherein, The inverted conical cylinder (121) is located outside the lime digestion slag extractor (2), and the upright conical cylinder (122) is located inside the lime digestion slag extractor (2).

4. A cyclone feeder for lime slaker according to any one of claims 1 to 3, characterized in that, The top of the upper cylinder (11) is provided with at least one inspection port (15).

5. A cyclone feeder for lime slaker according to claim 4, wherein The upper cylinder (11) is provided with an inspection port installation port (152), the inspection port installation port (152) is connected to a detachable viewing window (151), and an inspection port sealing ring (153) is provided between the inspection port installation port (152) and the viewing window (151).

6. A hydrocyclone feeder for a lime digester and slag remover according to claim 5, characterized in that, The lime digestion and slag removal machine (2) is connected to the cylinder (1) through the feed pipe (13). The feed pipe (13) includes a first feed pipe (131) connecting the lime feed assembly (3) and a second feed pipe (132) connecting the cylinder (1). A feed pipe sealing ring (133) is provided at the connection between the first feed pipe (131) and the second feed pipe (132).

7. A hydrocyclone feeder for a lime digester and slag remover according to claim 6, characterized in that, The upper cylinder (11) and the inverted conical cylinder (121) are detachably connected, and a cylinder sealing ring (123) is provided at the connection between the upper cylinder (11) and the inverted conical cylinder (121).

8. A hydrocyclone feeder for a lime digester and slag remover according to claim 7, characterized in that, The inspection port sealing ring (153), the material pipe sealing ring (133), and the cylinder sealing ring (123) are all made of acid and alkali resistant rubber.

9. A hydrocyclone feeder for a lime digester and slag remover according to claim 7, characterized in that, The upper cylinder (11) is cylindrical, and the feed pipe (13) is connected to the top center of the upper cylinder (11).

10. A hydrocyclone feeder for a lime slag extractor according to claim 1, characterized in that, The lime digestion and slag removal machine (2) is equipped with at least one set of stirring paddles (4), which are mounted on a rotating shaft and driven to rotate by a stirring motor (6); the lime feeding assembly (3) includes a screw feeder, which is connected to a feeding motor (5), which provides power for the rotation of the screw feeder.

Images