Sulfur feeding device for sulfur incinerator

Abstract

The utility model discloses a kind of sulphur feeding devices for sulphur furnace;Belong to sulphur furnace feeding technical field;Its technical key points include sulfur inlet hopper, the sulfur inlet hopper bottom is equipped with the blanking hole with 600-800mm diameter, the blanking hole is connected with the conveying chamber in conduction;Two helical conveying components are arranged in parallel in conveying chamber, and the conveying chamber between two helical conveying components is equipped with distribution component;Feeding pipe is equipped at the end of each helical conveying component, and the feeding pipe is connected to the gas feeding pipe of sulphur furnace;The utility model aims at providing a kind of sulphur feeding devices for sulphur furnace, which reduces blockage and feeding smoothly;For sulphur feeding of sulphur furnace.

Description

Technical Field

[0001] This utility model relates to a feeding device, and more specifically, to a sulfur feeding device for a sulfur incinerator. Background Technology

[0002] During combustion, the sulfur incinerator requires a fixed ratio of sulfur and compressed air, meaning a constant sulfur feed rate and a stable compressed air flow rate. Under stable production conditions, the sulfur dioxide process gas obtained from the sulfur incinerator section of a sodium metabisulfite production line contains approximately 16-18% sulfur dioxide by volume and 3-5% residual oxygen. If the residual oxygen content in the sulfur dioxide process gas exceeds 6%, the sulfur trioxide content in the process gas will increase significantly, thereby affecting the sulfur feedstock conversion efficiency and the stability of the sodium metabisulfite production line.

[0003] In actual production, the diameter of the sulfur inlet hopper is currently 250mm. This small opening often leads to blockages. Simultaneously, the screw conveyor is prone to jamming due to excessive sulfur compression during transport, causing intermittent sulfur shortages in the sulfur combustion furnace. This production anomaly results in abnormal sulfur dioxide process gas composition, affecting process gas stability, increasing residual oxygen levels, and intermittently impacting the stability of sodium metabisulfite content in the product. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a sulfur feeding device for a sulfur combustion furnace that reduces clogging and ensures smooth feeding.

[0005] The technical solution of this utility model is implemented as follows: A sulfur feeding device for a sulfur incinerator includes a sulfur inlet hopper, the bottom of which is provided with a discharge hole with a diameter of 600-800mm, and the discharge hole is connected to a conveying chamber; two spiral conveying assemblies are arranged in parallel in the conveying chamber, and a material distribution assembly is provided in the conveying chamber between the two spiral conveying assemblies; a feed pipe is provided at the end of each spiral conveying assembly, and the feed pipe is connected to the gas feed pipe of the sulfur incinerator.

[0006] In the sulfur feeding device for a sulfur incinerator described above, an anti-caking component is provided in the sulfur inlet hopper. The anti-caking component includes a support column installed in the sulfur inlet hopper, and several umbrella-shaped support plates are evenly distributed along the axial direction on the support column.

[0007] In the sulfur feeding device for a sulfur incinerator described above, several support rods are evenly distributed on the surface of the umbrella-shaped support plate. The support rods are inclined outwards and have an angle α of 15-30° with the horizontal plane.

[0008] In the sulfur feeding device for a sulfur incinerator described above, the material distribution component includes a dividing block disposed in the conveying chamber. A diversion feeding port for connecting the spiral conveying components on both sides is provided on the dividing block below the discharge hole. A herringbone-shaped diversion block inclined toward the spiral conveying components on both sides is provided on the diversion feeding port.

[0009] In the sulfur feeding device for a sulfur incinerator described above, several vertically arranged striking pins are evenly distributed along the length of the upper end of the herringbone-shaped diverter block.

[0010] By adopting the above-described structure, this invention increases the diameter of the discharge hole from 250mm to 600-800mm, effectively preventing sulfur from clogging the discharge hole. The distribution component evenly distributes the sulfur into the two screw conveyor components, reducing the amount of sulfur entering a single screw conveyor component, minimizing the possibility of compression and clogging, and ensuring smooth feeding. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings, but this does not constitute any limitation on the present invention.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model.

[0014] Figure 3 This is a side view sectional structural diagram of the present invention.

[0015] Figure 4 This is a top view cross-sectional structural diagram of the present invention.

[0016] In the diagram: 1. Sulfur inlet hopper; 2. Feeding hole; 3. Conveying chamber; 4. Screw conveyor assembly; 5. Material distribution assembly; 5a. Dividing block; 5b. Diverting feed port; 5c. Herringbone diverting block; 5d. Impact pin; 6. Feed pipe; 7. Anti-caking assembly; 7a. Support column; 7b. Umbrella-shaped support plate; 7c. Support rod. Detailed Implementation

[0017] See Figure 1-4As shown, this utility model discloses a sulfur feeding device for a sulfur incinerator, comprising a sulfur inlet hopper 1, with a discharge hole 2 of 600-800 mm in diameter at its bottom, which is connected to a conveying chamber 3. Two screw conveyor assemblies 4 are arranged in parallel within the conveying chamber 3, and a material distribution assembly 5 is located within the conveying chamber 3 between the two screw conveyor assemblies 4. Each screw conveyor assembly 4 has a feed pipe 6 at its end, which is connected to the gas feed pipe of the sulfur incinerator. Each feed pipe is equipped with a valve, and sulfur is conveyed through the feed pipe to the gas feed pipe and then transported into the sulfur incinerator along with high-pressure air. The sulfur feed rate and compressed air flow rate are calculated based on the rotational speed of the screw conveyor assemblies and actual production conditions. These are common knowledge to those skilled in the art and will not be elaborated further here.

[0018] By increasing the diameter of the discharge hole from the original 250mm to 600-800mm, sulfur blockage at the discharge hole can be effectively avoided. The distribution component evenly distributes the sulfur into the two screw conveyor components, reducing the amount of sulfur entering each individual screw conveyor component, minimizing the possibility of compression and blockage, and ensuring smooth feeding.

[0019] In this embodiment, an anti-caking component 7 is provided inside the sulfur inlet hopper 1. The anti-caking component 7 includes a support column 7a disposed inside the sulfur inlet hopper 1, and a plurality of umbrella-shaped support plates 7b evenly distributed axially on the support column 7a. By providing the anti-caking component inside the sulfur inlet hopper, the possibility of sulfur being squeezed and caking is reduced. The umbrella-shaped support plates support the upper sulfur, preventing the weight of the upper sulfur from being applied to the sulfur at the bottom discharge hole, thus reducing the probability of the discharge hole being blocked.

[0020] More preferably, the umbrella-shaped support plate 7b has a plurality of support rods 7c evenly distributed on its surface. The support rods 7c are inclined outwards and form an angle α of 15-30° with the horizontal plane. These support rods keep the sulfur in the sulfur hopper loose during downward transport, preventing large clumps of sulfur from being transported to the discharge hole and further reducing the probability of blockage. Simultaneously, the 15-30° angle α with the horizontal plane of the support rods also allows the upper surface of the support rods to provide some support, further distributing the weight of the sulfur at the upper end.

[0021] In this embodiment, the material distribution assembly 5 includes a dividing block 5a disposed within the conveying chamber 3. A diversion feed port 5b, located below the discharge hole 2, is provided on the dividing block 5a to guide the flow of the two spiral conveying assemblies 4. The diversion feed port 5b is provided with a herringbone-shaped diversion block 5c inclined towards the two spiral conveying assemblies 4. The spiral conveying assembly includes two circular conveying channels and spiral blades disposed within the conveying channels. The dividing block is integrally formed with the sidewalls of the conveying channels of the two spiral conveying assemblies. When sulfur passes through the discharge hole and falls onto the herringbone-shaped diversion block, it is guided to the diversion feed ports on both sides and enters the two spiral conveying assemblies respectively.

[0022] More preferably, the upper end of the herringbone-shaped diverter block 5c is evenly distributed with several vertically arranged impact pins 5d along its length. When sulfur enters the feed hole and falls onto the herringbone-shaped diverter block, it collides with the impact pins, which can break up the clumps of sulfur and reduce the possibility of the sulfur being squeezed and blocked after entering the screw conveyor assembly.

[0023] During operation, sulfur is added to the sulfur inlet hopper by external feeding components or manually. After being dispersed by the support rod, the sulfur in the sulfur inlet hopper falls into the discharge hole. Guided by the herringbone diverter block, it enters the spiral conveyor components on both sides through the diversion feed port and is transported into the feed pipe. Finally, it enters the gas feed pipe and is transported into the sulfur combustion furnace with high-pressure air.

[0024] The above-described embodiments are preferred embodiments of the present utility model and are only used to facilitate the illustration of the present utility model. They are not intended to limit the present utility model in any way. Any person skilled in the art who makes partial modifications or alterations to the technical content disclosed in the present utility model without departing from the scope of the technical features of the present utility model shall still fall within the scope of the technical features of the present utility model.

Claims

1. A sulfur feeding device for a sulfur incinerator, comprising a sulfur inlet hopper (1), characterized in that, The bottom of the sulfur inlet hopper (1) is provided with a discharge hole (2) with a diameter of 600-800mm, and the discharge hole (2) is connected to the conveying chamber (3); two spiral conveying assemblies (4) are arranged in parallel in the conveying chamber (3), and a material distribution assembly (5) is provided in the conveying chamber (3) between the two spiral conveying assemblies (4); a feed pipe (6) is provided at the end of each spiral conveying assembly (4), and the feed pipe (6) is connected to the gas feed pipe of the sulfur combustion furnace.

2. The sulfur feeding device for a sulfur incinerator according to claim 1, characterized in that, An anti-caking assembly (7) is provided inside the sulfur inlet hopper (1). The anti-caking assembly (7) includes a support column (7a) provided inside the sulfur inlet hopper (1) and several umbrella-shaped support plates (7b) are evenly distributed along the axial direction on the support column (7a).

3. The sulfur feeding device for a sulfur incinerator according to claim 2, characterized in that, The umbrella-shaped support plate (7b) has several support rods (7c) evenly distributed on its surface. The support rods (7c) are inclined outward and have an angle α of 15-30° with the horizontal plane.

4. The sulfur feeding device for a sulfur incinerator according to claim 1, characterized in that, The material distribution component (5) includes a dividing block (5a) disposed in the material conveying chamber (3). The dividing block (5a) below the material discharge hole (2) is provided with a diversion feeding port (5b) that connects the two sides of the spiral conveying components (4). The diversion feeding port (5b) is provided with a herringbone-shaped diversion block (5c) that is inclined toward the two sides of the spiral conveying components (4).

5. A sulfur feeding device for a sulfur incinerator according to claim 4, characterized in that, The upper end of the herringbone-shaped diverter block (5c) is evenly distributed with several vertically arranged strikers (5d) along the length direction.

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