Intrinsically safe oven device for sulfite production

Abstract

The utility model discloses an intrinsically safe oven device for sulfite production, which comprises an oven body, a mixing pipe fixedly connected to the side surface of the oven body, a sulfur spraying pipe fixedly connected to the side surface of the mixing pipe, a gas conveying pipe fixedly connected to the side surface of the mixing pipe, and a spiral plate fixedly connected to the side inner wall of the mixing pipe. A fan is fixedly connected to the upper surface of the furnace body, a filter box is fixedly connected to the output end of the fan, a heating tank is fixedly connected to the filter box through a pipeline, an air inlet is fixedly connected to the side surface of the heating tank, and an exhaust pipe is fixedly connected to the end, away from the heating tank, of the air inlet; the inner wall of the heating tank is fixedly connected with a heating pipe, and the side surface of the heating tank is fixedly connected with a gas-guide pipe. By means of the components, liquid sulfur and combustion-supporting gas are fully mixed through the gas conveying pipe and the spiral plate, the utilization rate of raw materials is increased, smoke generated by combustion is used for conducting waste heat treatment on the combustion-supporting gas, energy is effectively utilized, and the combustion effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oven drying equipment, and in particular to an intrinsically safe oven drying equipment for sulfite production. Background Technology

[0002] Existing sulfite production furnaces thoroughly mix sulfidation liquid with combustion-supporting gas and then discharge the mixture from a combustion stabilizing hood using nozzles. This increases the utilization and combustion efficiency of raw materials. However, the waste heat in the flue gas generated after combustion is not effectively utilized, resulting in energy waste. For example, a spray-type sulfur incinerator disclosed in Chinese Patent Application No. CN202321119843.4 can thoroughly mix the sulfidation liquid with air before spraying it into the incinerator through an internally pressurized nozzle, improving combustion efficiency and raw material utilization. The internally pressurized nozzle is also fixedly equipped with a combustion stabilizing hood at its outer end, further improving combustion efficiency and preventing uneven heating of the internal refractory bricks. However, the waste heat in the high-temperature flue gas is not effectively utilized, leading to energy loss and resource waste, thus limiting its application. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide an intrinsically safe oven device for sulfite production. This device diverts the combustion-supporting gas through a gas supply pipe and installs a spiral plate in a mixing pipe to ensure thorough mixing of the combustion-supporting gas with liquid sulfur, thereby improving combustion efficiency, reducing harmful gases produced by incomplete combustion, and using the high-temperature flue gas generated after combustion to preheat the combustion-supporting gas in a heating tank, further improving combustion efficiency and effectively utilizing the waste heat in the flue gas, thus increasing energy recovery efficiency. Furthermore, the low-temperature flue gas after heat dissipation is recovered and reused for heating, further improving energy utilization efficiency.

[0004] This utility model also provides an intrinsically safe drying oven device for sulfite production as described above, comprising: an oven body, a mixing pipe fixedly connected to the side surface of the oven body, a sulfur injection pipe fixedly connected to the side surface of the mixing pipe, a gas supply pipe fixedly connected to the side surface of the mixing pipe, a spiral plate fixedly connected to the inner side wall of the mixing pipe, and a pressurized spray pipe fixedly connected to the inner side wall of the mixing pipe.

[0005] A blower is fixedly connected to the upper surface of the furnace body. A filter box is fixedly connected to the output end of the blower. A heating tank is fixedly connected to the filter box via a pipe. An air inlet is fixedly connected to the side surface of the heating tank. An exhaust pipe is fixedly connected to the end of the air inlet away from the heating tank. A heating pipe is fixedly connected to the inner side wall of the heating tank. A gas guide pipe is fixedly connected to the side surface of the heating tank. Through these components, the liquid sulfur and combustion-supporting gas are thoroughly mixed using the gas guide pipe and spiral plate, improving the utilization rate of raw materials. Furthermore, the waste heat generated by combustion is used to treat the combustion-supporting gas, effectively utilizing energy and improving combustion efficiency.

[0006] According to the intrinsically safe drying furnace device for sulfite production described in this utility model, a combustion stabilizing hood is fixedly connected to the end of the mixing pipe away from the sulfur injection pipe, and an ignition device is fixedly connected to the side surface of the furnace body. The liquid sulfur injected from the combustion stabilizing hood is ignited using the ignition device.

[0007] According to the intrinsically safe drying furnace device for sulfite production described in this utility model, the end of the exhaust pipe away from the air inlet is fixedly connected to the furnace body, and the end of the gas guide pipe away from the heating tank is fixedly connected to the gas supply pipe. Combustion-supporting gas is sent into the gas supply pipe through the gas guide pipe, and the flue gas generated after combustion is then sent into the heating tank through the exhaust pipe.

[0008] According to the intrinsically safe drying oven device for sulfite production described in this utility model, a slider is slidably connected to the upper surface of the filter box, and a cleaning plate is fixedly connected to one end of the slider near the filter box. The cleaning plate can be moved by sliding the slider to clean dust and impurities from the filter screen.

[0009] According to the intrinsically safe drying oven device for sulfite production described in this utility model, a filter screen is fixedly connected to the inner side wall of the filter box, and the side surface of the filter screen is slidably connected to a cleaning plate. The filter screen filters out dust and other impurities carried in the combustion-supporting gas.

[0010] According to the intrinsically safe drying oven device for sulfite production described in this utility model, a storage box is slidably connected to the lower bottom wall of the filter box, and the storage box is located below the cleaning plate. The storage box is used to collect dust and other impurities scraped off by the cleaning plate.

[0011] According to the intrinsically safe drying furnace device for sulfite production described in this utility model, an outlet is fixedly connected to the side surface of the heating tank, and the heating tube is connected to both the outlet and the inlet. High-temperature flue gas enters the heating tube through the inlet, and then the cooled flue gas is discharged from the outlet.

[0012] According to the intrinsically safe drying oven device for sulfite production described in this utility model, the upper surface of the oven body is fixedly connected to a filter box, and the upper surface of the oven body is fixedly connected to a heating tank. Both the filter box and the heating tank are fixed above the oven body.

[0013] Beneficial effects:

[0014] Compared with existing technologies, this method diverts the combustion-supporting gas through a gas supply pipe and installs a spiral plate in the mixing pipe to ensure thorough mixing of the combustion-supporting gas with liquid sulfur, thereby improving combustion efficiency, reducing harmful gases produced by incomplete combustion, and using the high-temperature flue gas generated after combustion to preheat the combustion-supporting gas in a heating tank, which further improves combustion efficiency and effectively utilizes the waste heat in the flue gas, thus increasing energy recovery efficiency. Furthermore, the low-temperature flue gas after heat dissipation is recovered and reused for heating, further improving energy utilization efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an overall structural diagram of the intrinsically safe drying furnace device for sulfite production according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the intrinsically safe drying oven device for sulfite production according to this utility model;

[0018] Figure 3 This utility model relates to an intrinsically safe drying oven device for sulfite production. Figure 2 Partial structural diagram at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the mixing tube of the intrinsically safe drying oven device for sulfite production according to this utility model;

[0020] Figure 5 This is a structural diagram of the heating tube of the intrinsically safe drying furnace device for sulfite production according to this utility model.

[0021] Legend:

[0022] 1. Furnace body; 2. Ignition device; 3. Mixing pipe; 4. Sulfur injection pipe; 5. Gas supply pipe; 6. Exhaust pipe; 7. Fan; 8. Filter box; 9. Sliding block; 10. Storage box; 11. Heating tank; 12. Air inlet; 13. Air outlet; 14. Gas guide pipe; 15. Heating pipe; 16. Cleaning plate; 17. Filter screen; 18. Spiral plate; 19. Pressurized spray pipe; 20. Combustion stabilizing cover. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-5 This utility model provides an intrinsically safe drying oven device for sulfite production, comprising: an oven body 1, the upper surface of the oven body 1 being fixedly connected to a filter box 8, the upper surface of the oven body 1 being fixedly connected to a heating tank 11, a mixing pipe 3 being fixedly connected to the side surface of the oven body 1, a sulfur injection pipe 4 being fixedly connected to the side surface of the mixing pipe 3, a gas transmission pipe 5 being fixedly connected to the side surface of the mixing pipe 3, a spiral plate 18 being fixedly connected to the inner side wall of the mixing pipe 3, and a pressurized spray pipe 19 being fixedly connected to the inner side wall of the mixing pipe 3.

[0025] Specifically, during use, liquid sulfur and combustion-supporting gas are introduced into the mixing pipe 3 through the sulfur injection pipe 4 and the gas supply pipe 5 respectively for mixing. The gas supply pipe 5 has three channels, achieving a multi-stage mixing effect when the liquid sulfur flows along the mixing pipe 3. At the same time, the mixing pipe 3 is equipped with a spiral plate 18, which allows the liquid sulfur and combustion-supporting gas to flow along the path restricted by the spiral plate 18 to enhance the mixing effect. When the liquid sulfur and combustion-supporting gas pass through the pressurized nozzle 19, they are sprayed from the pressurized nozzle 19 onto the combustion stabilizing cover 20 and then sprayed out from the combustion stabilizing cover 20 from the mixing pipe 3.

[0026] A blower 7 is fixedly connected to the upper surface of the furnace body 1. A filter box 8 is fixedly connected to the output end of the blower 7. A heating tank 11 is fixedly connected to the filter box 8 through a pipe. An air outlet 13 is fixedly connected to the side surface of the heating tank 11. An air inlet 12 is fixedly connected to the side surface of the heating tank 11. An exhaust pipe 6 is fixedly connected to the end of the air inlet 12 away from the heating tank 11. The end of the exhaust pipe 6 away from the air inlet 12 is fixedly connected to the furnace body 1. A heating pipe 15 is fixedly connected to the inner side wall of the heating tank 11. The heating pipe 15 is connected to the air outlet 13 and the air inlet 12. A gas guide pipe 14 is fixedly connected to the side surface of the heating tank 11. The end of the gas guide pipe 14 away from the heating tank 11 is fixedly connected to the gas supply pipe 5.

[0027] Specifically, a blower 7 is installed above the furnace body 1. During operation, the input end of the blower 7 is connected to a pipe that releases combustion-supporting gas. The blower 7 sprays the combustion-supporting gas into a filter box 8 for impurity removal and filtration. The filtered combustion-supporting gas then enters the heating tank 11. The air inlet 12 of the heating tank 11 is connected to the furnace body 1 via an exhaust pipe 6. The flue gas generated after the liquid sulfur combustion enters the heating pipe 15 through the exhaust pipe 6 and the air inlet 12. The heating pipe 15 consists of two annular pipes and multiple sets of straight pipes. When the flue gas enters... After entering the heating pipe 15, the gas will be split along the annular pipe and flow along the straight pipe. After merging through another annular pipe, it will be discharged from the outlet 13. It can be connected to the outlet 13 through an external pipe to use the waste heat of the low-temperature flue gas for heating. The high-temperature flue gas will heat the combustion gas in the heating tank 11 during the flow. The gas is split through multiple straight pipes, which increases the heat exchange area and improves the heat exchange effect. The preheated combustion gas is then discharged from the heating tank 11 into the gas transmission pipe 5 through the gas guide pipe 14.

[0028] A combustion stabilizing cover 20 is fixedly connected to the end of the mixing pipe 3 away from the sulfur injection pipe 4, and an ignition device 2 is fixedly connected to the side surface of the furnace body 1.

[0029] Specifically, the combustion efficiency is improved by using the stabilizing hood 20 to make the liquid sulfur burn more completely. The ignition device 2 is located at the outlet of the mixing tube 3 and is used to ignite the liquid sulfur discharged from the stabilizing hood 20 so that it can generate sulfites.

[0030] A slider 9 is slidably connected to the upper surface of the filter box 8. A cleaning plate 16 is fixedly connected to one end of the slider 9 near the filter box 8. A filter screen 17 is fixedly connected to the inner side wall of the filter box 8. The side surface of the filter screen 17 is slidably connected to the cleaning plate 16. A storage box 10 is slidably connected to the bottom wall of the filter box 8. The storage box 10 is located below the cleaning plate 16.

[0031] Specifically, the filter box 8 is equipped with a filter screen 17. After the combustion-supporting gas enters the filter box 8, it will pass through the filter screen 17 and be discharged into the heating tank 11. The filter screen 17 isolates the dust and other impurities carried by the combustion-supporting gas, thereby improving the purity of the combustion-supporting gas. During use, the sliding slider 9 can drive the cleaning plate 16, which allows the brush on the cleaning plate 16 to clean the impurities on the filter screen 17 and allow the impurities to fall into the collection box 10. After use, the collection box 10 can be removed from the filter box 8 and the dust and other impurities can be cleaned.

[0032] Working principle: During operation, the starting fan 7 first sends the combustion-supporting gas through the filter box 8, heating tank 11, gas guide pipe 14, and gas delivery pipe 5 into the mixing pipe 3. Simultaneously, liquid sulfur is sent from the sulfur injection pipe 4 into the mixing pipe 3. The combustion-supporting gas is diverted through the three pipes of the gas delivery pipe 5, achieving a multi-stage mixing effect as the liquid sulfur flows along the mixing pipe 3. A spiral plate 18 is installed in the mixing pipe 3, allowing the liquid sulfur and combustion-supporting gas to flow along the path restricted by the spiral plate 18 to enhance the mixing effect. When the gas passes through the pressurized nozzle 19, it is sprayed from the pressurized nozzle 19 onto the combustion stabilizing hood 20 and then sprayed out from the mixing pipe 3 from the combustion stabilizing hood 20. After that, the liquid sulfur is ignited by the ignition device 2, so that it can generate sulfite in the furnace body 1. The generated flue gas will enter the heating pipe 15 in the heating tank 11 through the exhaust pipe 6 and the air inlet 12. The heating pipe 15 can use the heat carried by the flue gas to preheat the combustion gas in the heating tank 11, and after being discharged through the air outlet 13, the low-temperature flue gas is transported and collected for heating.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A self-ignition type oven device for sulfite production, characterized by, Include: The side surface of the furnace body (1) is fixedly connected with a mixing pipe (3), the side surface of the mixing pipe (3) is fixedly connected with a sulfur injection pipe (4), the side surface of the mixing pipe (3) is fixedly connected with a gas conveying pipe (5), the inner wall of the mixing pipe (3) is fixedly connected with a spiral plate (18), and the inner wall of the mixing pipe (3) is fixedly connected with a pressurized injection pipe (19); The upper surface of the furnace body (1) is fixedly connected with a fan (7), the output end of the fan (7) is fixedly connected with a filter box (8), the filter box (8) is fixedly connected with a heating tank (11) through a pipeline, the side surface of the heating tank (11) is fixedly connected with an air inlet (12), one end of the air inlet (12) away from the heating tank (11) is fixedly connected with an exhaust pipe (6), the inner wall of the heating tank (11) is fixedly connected with a heating pipe (15), and the side surface of the heating tank (11) is fixedly connected with a gas guide pipe (14).

2. The intrinsic safety type oven device for sulfite production according to claim 1, characterized by, One end of the mixing pipe (3) away from the sulfur injection pipe (4) is fixedly connected with a stable combustion cover (20), and the side surface of the furnace body (1) is fixedly connected with an ignition device (2).

3. The intrinsic safety type oven device for sulfite production according to claim 1, characterized by, One end of the exhaust pipe (6) away from the air inlet (12) is fixedly connected with the furnace body (1), and one end of the gas guide pipe (14) away from the heating tank (11) is fixedly connected with the gas conveying pipe (5).

4. The intrinsic safety type oven device for sulfite production according to claim 1, characterized by, The upper surface of the filter box (8) is slidably connected with a sliding block (9), and one end of the sliding block (9) close to the filter box (8) is fixedly connected with a cleaning plate (16).

5. The intrinsic safety type oven device for sulfite production according to claim 4, characterized by The inner wall of the filter box (8) is fixedly connected with a filter screen (17), and the side surface of the filter screen (17) is slidably connected with the cleaning plate (16).

6. The intrinsic safety type oven device for sulfite production according to claim 5, wherein The lower bottom wall of the filter box (8) is slidably connected with a storage box (10), and the storage box (10) is located below the cleaning plate (16).

7. The intrinsic safety type oven device for sulfite production according to claim 1, characterized by, The side surface of the heating tank (11) is fixedly connected with an air outlet (13), the heating pipe (15) communicates with the air outlet (13), and the heating pipe (15) communicates with the air inlet (12).

8. The intrinsic safety type oven device for sulfite production according to claim 1, characterized by, The upper surface of the furnace body (1) is fixedly connected with the filter box (8), and the upper surface of the furnace body (1) is fixedly connected with the heating tank (11).

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