Device for preparing sulfur by reducing SO2 flue gas with carbon
Through the simple device, the SO2 flue gas is reduced by using carbon element reducing agent, which solves the problems of complex equipment and high maintenance costs in the prior art, and achieves fast and convenient SO2 reduction experiments and device maintenance.
Patent Information
- Application Number
- CN202422044109.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The existing industrial sulfur dioxide reduction devices have complex processes and high maintenance costs, making it difficult to carry out rapid experiments and equipment replacement operations.
A simple device is designed to directly reduce SO2 flue gas using carbon elemental reducing agent, and the combined structure of the reaction cylinder, sulfur collection tank and cooling water tank is achieved to achieve the reduction and cooling of SO2, and anthracite carbon combustion is used to generate elemental sulfur.
It realizes fast and convenient SO2 flue gas reduction experiments, reduces maintenance costs, facilitates disassembly and replaces devices, and improves experimental efficiency.
Smart Images
Figure CN223082789U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sulfur dioxide gas reduction, and particularly relates to a device for preparing sulfur by carbon reduction of SO2 flue gas. Background Art
[0002] With the continuous improvement of chemical SO2 flue gas reduction technology, typical SO2 reduction methods have become mature, but the processes are complex (such as SO2 catalytic hydrogenation + Claus method for recovering H2S in tail gas to produce sulfur), and the raw material and catalyst costs are relatively high, and the safety management is difficult. At present, the reduction devices applied industrially have problems such as high raw material costs and cumbersome experimental processes, and various research experiments cannot be carried out at any time and anywhere. Moreover, when industrial equipment is damaged and needs to be replaced, a large amount of maintenance time is required, and there are problems such as inconvenient replacement operation process, long maintenance time, and high maintenance cost, so there is room for improvement. In order to effectively carry out various reduction tests and qualitatively verify data such as the feasibility of the process of preparing sulfur by carbon reduction method, reduction process, related reaction conditions, and the purity of the produced sulfur through short-term small-scale experiments, it is very necessary to prepare a simple and efficient experimental device. Content of the Utility Model
[0003] Aiming at the defects of the current industrial reduction devices for sulfur dioxide, such as complex processes and high maintenance costs, the present invention provides a device for preparing sulfur by carbon reduction of SO2 flue gas. The utility model provides a device for preparing sulfur by carbon reduction of SO2 flue gas, which directly reduces SO2 in the flue gas with a carbon-based reducing agent to produce elemental S in a simple device.
[0004] The utility model is realized by the following technical solutions:
[0005] A device for preparing sulfur by carbon reduction of SO2 flue gas, comprising a reaction cylinder body and a sulfur collection tank movably arranged at the upper part of the reaction cylinder body;
[0006] An inner reactor orifice plate is arranged in the middle of the reaction cylinder body for placing anthracite coal; an air inlet communicating with the inside of the cylinder body is arranged on the bottom side wall of the reaction cylinder body, and an air supplement port communicating with the inside of the cylinder body is arranged on the top side wall of the reaction cylinder body;
[0007] The inside of the sulfur collection tank is hollow and communicates with the top of the reaction cylinder body. The upper part inside the sulfur collection tank is a cooling water tank, and the lower part is a gas collection tank, and the cooling water tank and the gas collection tank are separated; one end of the cooling water tank is provided with a water inlet near the top of the cooling water tank, and the other end is provided with a water outlet near the bottom of the cooling water tank; discharge ports are arranged at the bottoms of both ends of the gas collection tank.
[0008] The working principle of the utility model is as follows:
[0009] Connect the test raw material SO2 flue gas sampling pipe to the air inlet of the reactor cylinder through a hose or flange. At the same time, send cooling water from the water inlet pipe to the cooling water tank inside the sulfur recovery tank. After the cooling water flows out from the outlet pipe, it is sent back to the inlet pipe to ensure that circulating water cooling is achieved inside the cooling water tank. Then, select a number of anthracite coals and evenly spread them on the upper part of the reactor orifice plate. Open the valve of the SO2 flue gas sampling pipe to send the raw material SO2 flue gas into the reaction cylinder body, and continuously and stably introduce the SO2 flue gas. During the reaction, open the air supply port to supplement air to assist the reaction, confirm that the anthracite coal burns normally, and the burned gas rises and enters the sulfur recovery tank. After contacting the bottom of the cooling water tank, it is cooled by the cooling water tank to generate solid sulfur attached to the bottom of the cooling water tank or the inner wall of the gas collecting tank. Observe the reaction process. When there is yellow solid attached to the bottom of the cooling water tank and inside the gas collecting tank, stop introducing the SO2 flue gas and adding anthracite coal. Withdraw the sulfur recovery tank, collect the solid sulfur through the discharge ports at both ends of the gas collecting tank into a special container, and finally conduct analysis and testing.
[0010] Preferably, the aperture of the ventilation holes provided on the reactor orifice plate is 5-10 mm.
[0011] The ventilation holes are used for the anthracite coal to contact and burn with air. If the ventilation holes are too small, the amount of air that can be contacted will be small. If the ventilation holes are too large, the anthracite coal will fall to the bottom of the reaction cylinder body 1, resulting in waste of raw materials.
[0012] Preferably, there are 3-5 connecting pipes with a length of 80-100 mm at the bottom of the sulfur recovery tank. The connecting pipes are connected and communicated with the top of the reaction cylinder body through flanges.
[0013] The sulfur recovery tank is connected to the reaction cylinder body through a connecting pipe to send the flue gas after the reaction in the reaction cylinder body into the sulfur recovery tank, avoiding poor cooling effect of the cooling water tank 8 caused by a large amount of gas rising, and improving the cooling efficiency.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] The device of the present utility model has a simple structure and can quickly, conveniently and effectively carry out the work of preparing sulfur by carbon reducing SO2 flue gas. The sulfur recovery tank and the reaction cylinder body are detachably arranged, which is convenient for collecting solid sulfur and also convenient for replacement and maintenance, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of the device of the present utility model.
[0017] Reference numerals: 1-reaction cylinder body, 2-anthracite coal, 3-reactor orifice plate, 4-sulfur recovery tank, 5-connecting pipe, 6-air inlet, 7-air supply port, 8-cooling water tank, 9-gas collecting tank, 10-inlet pipe, 11-outlet pipe, 12-discharge port. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The present utility model will be further described below in conjunction with the accompanying drawings. In the embodiments, unless otherwise specified, the technical means used are all conventional technical means in the art. Embodiment 1
[0019] As Figure 1 shown, a device for preparing sulfur by carbon reduction of SO2 flue gas includes a reaction cylinder body 1 and a sulfur collection tank 4 movably arranged at the upper part of the reaction cylinder body 1; the reaction cylinder body has a specification of 800×700mm, a diameter of 0.7m, and a material of 304 stainless steel. The sulfur collection tank 4 has a diameter of 1m.
[0020] An air reactor orifice plate 3 is arranged in the middle of the reaction cylinder body 1 for placing anthracite carbon 2; the aperture of the air permeable holes provided on the reactor orifice plate 3 is 5mm, and the reactor orifice plate 3 is made of 304 stainless steel.
[0021] An air inlet 6 communicating with the inside of the cylinder body is provided on the bottom side wall of the reaction cylinder body 1, and an air supplement port 7 communicating with the inside of the cylinder body is provided on the top side wall of the reaction cylinder body 1;
[0022] The inside of the sulfur collection tank 4 is hollow and communicates with the top of the reaction cylinder body 1. The upper part inside the sulfur collection tank 4 is a cooling water tank 8, and the lower part is a gas collection tank 9. The cooling water tank 8 and the gas collection tank 9 are partitioned; one end of the cooling water tank 8 is provided with a water inlet pipe 10 near the top of the cooling water tank 8, and the other end is provided with a water outlet pipe 11 near the bottom of the cooling water tank 8; discharge ports 12 are provided at the bottoms of both ends of the gas collection tank 9.
[0023] The working principle of this embodiment is as follows:
[0024] Connect the sampling pipe of the test raw material SO2 flue gas (with a concentration of 32 - 40%) to the air inlet 6 of the reactor cylinder 1 through a hose or flange. At the same time, send cooling water from the water inlet pipe 10 to the cooling water tank 8 inside the sulfur recovery tank 4. After the cooling water flows out from the water outlet pipe 11, it is sent back to the water inlet pipe 10 to ensure that circulating water cooling is achieved inside the cooling water tank 8. Then, select a number of anthracite coals 2 and evenly spread them on the upper part of the reactor orifice plate 3. Open the valve of the SO2 flue gas sampling pipe to send the raw material SO2 flue gas into the reaction cylinder 1, and continuously and stably introduce the SO2 flue gas. During the reaction, open the air supply port to supplement air to assist the reaction, confirm that the anthracite coal 2 burns normally, control the reaction temperature at 700 - 1000 °C, and the reaction pressure at 65 - 70 Kpa. After combustion, the gas rises and enters the sulfur recovery tank 4. After contacting the bottom of the cooling water tank 8, it is cooled by the cooling water tank 8 to generate elemental sulfur, which adheres to the bottom of the cooling water tank 8 or the inner wall of the gas collection tank 9. Observe the reaction process. When there is yellow solid adhering to the bottom of the cooling water tank 8 and inside the gas collection tank 9, stop introducing the SO2 flue gas and adding anthracite coal 2, extract the sulfur recovery tank 4, collect the elemental sulfur through the discharge ports 12 at both ends of the gas collection tank 9 into a special container, and finally conduct analysis and testing. Example 2
[0025] This embodiment is a further improvement based on Example 1, specifically as follows:
[0026] The aperture of the ventilation holes provided on the reactor orifice plate 3 is 10 mm;
[0027] There are 3 connecting pipes 5 with a length of 100 mm at the bottom of the sulfur recovery tank 4. The connecting pipes 5 are connected and communicated with the top of the reaction cylinder 1 through flanges.
[0028] The working principle of this embodiment is the same as that of Example 1. The sulfur recovery tank 4 is connected to the reaction cylinder 1 through the connecting pipe 5 to send the flue gas after the reaction in the reaction cylinder 1 into the sulfur recovery tank, avoiding the poor cooling effect of the cooling water tank 8 caused by the rise of a large amount of gas and improving the cooling efficiency. Example 3
[0029] This embodiment is a further improvement based on Example 2, specifically as follows:
[0030] The aperture of the ventilation holes provided on the reactor orifice plate 3 is 8 mm;
[0031] There are 5 connecting pipes 5 with a length of 80 mm at the bottom of the sulfur recovery tank 4. The connecting pipes 5 are connected and communicated with the top of the reaction cylinder 1 through flanges.
[0032] The working principle of this embodiment is the same as that of Example 2.
[0033] The above embodiments are only exemplary embodiments of the present utility model and are not used to limit the present utility model. The protection scope of the present utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present utility model, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present utility model.
Claims
1. An apparatus for preparing sulfur by carbon-reducing SO2 flue gas, characterized in that: It includes a reaction cylinder body (1) and a sulfur collection tank (4) movably arranged at the upper part of the reaction cylinder body (1); An in-reactor orifice plate (3) is arranged in the middle inside the reaction cylinder body (1) for placing anthracite coal (2); an air inlet (6) communicating with the inside of the cylinder body is arranged on the bottom side wall of the reaction cylinder body (1), and an air make-up port (7) communicating with the inside of the cylinder body is arranged on the top side wall of the reaction cylinder body (1); The inside of the sulfur collection tank (4) is hollow and communicates with the top of the reaction cylinder body (1). The upper part inside the sulfur collection tank (4) is a cooling water tank (8), and the lower part is a gas collection tank (9). The cooling water tank (8) and the gas collection tank (9) are partitioned. One end of the cooling water tank (8) is provided with a water inlet pipe (10) near the top of the cooling water tank (8), and the other end is provided with a water outlet pipe (11) near the bottom of the cooling water tank (8). The bottom of both ends of the gas collection tank (9) is provided with a discharge port (12).
2. The apparatus for preparing sulfur by carbon-reducing SO2 flue gas according to claim 1, characterized in that: The aperture of the air-permeable holes arranged on the in-reactor orifice plate (3) is 5-10 mm.
3. The apparatus for preparing sulfur by carbon reduction of SO2 flue gas according to claim 1, characterized in that: 3-5 connecting pipes (5) with a diameter of 80-100 mm are arranged at the bottom of the sulfur collection tank (4). The connecting pipes (5) are connected to the top of the reaction cylinder body (1) through flanges and are communicated.