Tail gas treatment device for gas nitriding furnace

Abstract

The utility model relates to the technical field of tail gas treatment, in particular to a gas nitriding furnace tail gas treatment device which comprises a shell, two partition plates are fixedly connected to the interior of the shell and divide the interior of the shell into a water cavity, a filter cavity and a heating cavity which are sequentially arranged from bottom to top, purified water is arranged in the water cavity, and the filter cavity is communicated with the heating cavity. According to the tail gas treatment device for the gas nitriding furnace, through the arrangement of the water cavity, the filtering cavity and the heating cavity, gas and purified water are fully mixed, ammonia gas makes full contact with a water source, and the good purification effect is achieved; carbon dioxide, ammonia gas and sulfur dioxide in gas can be effectively filtered through the filter plate, the filtering effect is improved, ammonia gas contained in tail gas discharged by the gas nitriding furnace is heated and decomposed into hydrogen and nitrogen, the hydrogen and the nitrogen are ignited at the exhaust pipe through an ignition device or manually, and therefore the tail gas discharged by the gas nitriding furnace is purified, and the service life of the gas nitriding furnace is prolonged. The environmental pollution is favorably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for a gas nitriding furnace. Background Art

[0002] The main components of the gas nitriding furnace exhaust include nitrogen oxides, carbon dioxide, carbon monoxide and sulfide, etc. The gas nitriding furnace exhaust has certain hazards to the environment and human health. In order to reduce its impact on the environment, a series of effective control measures need to be taken;

[0003] In the existing technology, it is usually necessary to introduce ammonia into the gas nitriding furnace for gas nitriding. Therefore, the exhaust gas discharged by the gas nitriding furnace contains ammonia, which has a pungent odor. The exhaust gas containing ammonia discharged into the atmosphere will cause environmental pollution and even cause surface water deterioration. As the country's attention to environmental protection issues continues to increase, the requirements for exhaust gas emissions are becoming more and more stringent. Utility Model Content

[0004] The purpose of the utility model is to provide a gas nitriding furnace tail gas treatment device, which has the characteristics of being easy to achieve good purification and filtering effects on the gas nitriding furnace tail gas, helping to reduce environmental pollution, and having a simple structure and easy operation.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a gas nitriding furnace exhaust gas treatment device, comprising an outer shell, two partitions fixedly connected to the interior of the outer shell, the two partitions dividing the interior of the outer shell into a water chamber, a filter chamber and a heating chamber arranged in sequence from bottom to top, the interior of the water chamber is provided with purified water, the inner wall of the water chamber is fixedly connected to a horizontally arranged air inlet pipe, the outer wall of the air inlet pipe is connected to a plurality of evenly distributed air distribution pipes extending to the interior of the purified water, the interior of the filter chamber is detachably connected to a plurality of vertically arranged filter plates, and the interior of the heating chamber is provided with two heating rods.

[0006] In order to facilitate gas guidance, as a preferred gas nitriding furnace exhaust gas treatment device of the present invention, a first air pump is installed on the right side of the outer wall of the shell, and the water chamber and the filter chamber are connected through the first air pump and the first air guide pipe. A second air pump is installed on the left side of the outer wall of the shell, and the filter chamber and the heating chamber are connected through the second air pump and the second air guide pipe.

[0007] In order to fully mix the gas and water, as a preferred gas nitriding furnace exhaust gas treatment device of the present invention, the inner bottom end of the water chamber is rotatably connected to a rotating shaft, the top end of the rotating shaft is fixedly connected to a stirring rod, and a motor is installed at the bottom of the outer shell, and the output end of the motor is fixedly connected to the rotating shaft.

[0008] In order to achieve the splash-proof effect, as a preferred gas nitriding furnace exhaust gas treatment device of the present invention, the front and rear sides of the outer wall of the air inlet pipe are fixedly connected with splash-proof nets, and the other sides of the two splash-proof nets are fixedly connected to the front and rear inner walls of the outer shell.

[0009] In order to facilitate air intake and exhaust, as a preferred gas nitriding furnace exhaust treatment device of the present invention, an air inlet connected to an air inlet pipe is fixedly connected to the lower left side of the outer wall of the shell, and an exhaust pump is installed on the top of the shell, and the outer wall of the exhaust pump is fixedly connected to an exhaust pipe connected to the heating chamber.

[0010] In order to facilitate water intake and drainage, as a preferred gas nitriding furnace tail gas treatment device of the present invention, a drain pipe communicating with the water cavity is fixedly connected to the lower right side of the outer wall of the shell, and a valve is provided on the outer wall of the drain pipe.

[0011] In order to detect the internal temperature of the heating chamber, as a preferred gas nitriding furnace exhaust gas treatment device of the present invention, a temperature sensor is provided inside the heating chamber, and the front end surface of the shell is movably connected to a sealing door connected to the filter chamber.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] This gas nitriding furnace tail gas treatment device is provided with a water chamber, a filter chamber and a heating chamber to fully mix the gas with purified water, so that the ammonia gas fully contacts the water source, thereby achieving a good purification effect. The carbon dioxide, ammonia and sulfur dioxide in the gas can be effectively filtered through the filter plate, thereby improving the filtering effect. The ammonia gas contained in the tail gas emitted by the gas nitriding furnace is decomposed into hydrogen and nitrogen by heat, and is ignited at the exhaust pipe through an ignition device or manually, thereby purifying the tail gas emitted by the gas nitriding furnace, which is beneficial to reducing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall main cross-sectional structural diagram of the utility model;

[0015] Figure 2 This is a partial top-down cross-sectional structural diagram of the present utility model;

[0016] Figure 3 This is the overall external structure diagram of the utility model.

[0017] In the figure: 1. Outer shell; 2. Partition; 3. Water chamber; 4. Filter chamber; 5. Heating chamber; 6. Air inlet pipe; 7. Purified water; 8. Air distribution pipe; 9. Filter plate; 10. Heating rod; 11. First air pump; 12. First air duct; 13. Second air pump; 14. Second air duct; 15. Rotating shaft; 16. Stirring rod; 17. Motor; 18. Splash screen; 19. Air inlet; 20. Exhaust pump; 21. Exhaust pipe; 22. Drain pipe; 23. Temperature sensor; 24. Sealing door. DETAILED DESCRIPTION

[0018] See also Figures 1 to 3 A gas nitriding furnace tail gas treatment device includes a shell 1, two partitions 2 are fixedly connected to the interior of the shell 1, and the two partitions 2 divide the interior of the shell 1 into a water chamber 3, a filter chamber 4 and a heating chamber 5 arranged in sequence from bottom to top. Purified water 7 is provided inside the water chamber 3, and a horizontally arranged air inlet pipe 6 is fixedly connected to the inner wall of the water chamber 3. The outer wall of the air inlet pipe 6 is connected with a plurality of evenly distributed air distribution pipes 8 extending to the interior of the purified water 7. The interior of the filter chamber 4 is detachably connected to a plurality of vertically arranged filter plates 9, and the interior of the heating chamber 5 is provided with two heating rods 10.

[0019] In this embodiment, two partitions 2 separate the interior of the housing 1 into a water chamber 3, a filter chamber 4, and a heating chamber 5, which are arranged in sequence from bottom to top. The gas first enters the air inlet pipe 6, and then enters the purified water 7 from multiple air distribution pipes 8. The purified water 7 is a normal water source. The motor 17 is started to drive the stirring rod 16 to rotate and stir, so that the gas and the purified water 7 are fully mixed, so that the ammonia gas fully contacts the water source to achieve a good purification effect. The first air pump 11 is started to draw the gas inside the water chamber 3 into the interior of the filter chamber 4 through the first air guide pipe 12. The interior of the filter chamber 4 is detachably connected with multiple vertically arranged The filter plate 9 includes an activated carbon plate, a calcium oxide plate and a sodium hydroxide plate, which can effectively filter carbon dioxide, ammonia and sulfur dioxide in the gas, thereby improving the filtering effect. The second air pump 13 is further started to allow the gas to enter the interior of the heating chamber 5 through the second air duct 14, and the two heating rods 10 are started to heat the gas inside the heating chamber 5. The ammonia contained in the exhaust gas emitted by the gas nitriding furnace is decomposed into hydrogen and nitrogen by heat, and is ignited at the exhaust pipe 21 through an ignition device or manually, thereby purifying the exhaust gas emitted by the gas nitriding furnace, which is beneficial to reducing environmental pollution.

[0020] As a technical optimization solution of the present utility model, a first air pump 11 is installed on the right side of the outer wall of the outer shell 1, and the water chamber 3 and the filter chamber 4 are connected through the first air pump 11 and the first air duct 12. A second air pump 13 is installed on the left side of the outer wall of the outer shell 1, and the filter chamber 4 and the heating chamber 5 are connected through the second air pump 13 and the second air duct 14.

[0021] In this embodiment, the first air pump 11 and the second air pump 13 are used to facilitate the introduction of gas from the water chamber 3 into the filter chamber 4 , and then from the filter chamber 4 into the interior of the heating chamber 5 .

[0022] As a technical optimization solution of the present invention, the inner bottom end of the water chamber 3 is rotatably connected to a rotating shaft 15, the top end of the rotating shaft 15 is fixedly connected to a stirring rod 16, and a motor 17 is installed at the bottom of the outer shell 1, and the output end of the motor 17 is fixedly connected to the rotating shaft 15.

[0023] In this embodiment, the motor 17 is started to drive the stirring rod 16 to rotate and stir, so that the gas and the purified water 7 are fully mixed, so that the ammonia gas fully contacts the water source, achieving a good purification effect.

[0024] As a technical optimization solution of the present invention, splash-proof nets 18 are fixedly connected to the front and rear sides of the outer wall of the air inlet pipe 6 , and the other sides of the two splash-proof nets 18 are fixedly connected to the front and rear inner walls of the outer shell 1 .

[0025] In this embodiment, the anti-splashing net 18 is laid horizontally with the air inlet pipe 6 as the horizontal line, which has a good anti-splashing effect and reduces the splashing of the purified water 7 when the gas is introduced into the water cavity 3.

[0026] As a technical optimization solution of the present invention, an air inlet 19 connected to the air inlet pipe 6 is fixedly connected to the lower left side of the outer wall of the outer shell 1, an exhaust pump 20 is installed on the top of the outer shell 1, and the outer wall of the exhaust pump 20 is fixedly connected to the exhaust pipe 21 connected to the heating chamber 5.

[0027] In this embodiment, the air inlet 19 is connected to the air inlet pipe 6 to facilitate the introduction of the gas to be treated into the air inlet pipe 6. The outer wall of the exhaust pump 20 is fixedly connected to the exhaust pipe 21 connected to the heating chamber 5 to facilitate the discharge of the treated gas.

[0028] As a technical optimization solution of the present invention, a drain pipe 22 communicating with the water cavity 3 is fixedly connected to the lower right side of the outer wall of the shell 1, and a valve is provided on the outer wall of the drain pipe 22.

[0029] In this embodiment, a drain pipe 22 is provided to facilitate water filling and drainage into the water cavity 3 , and a valve controls the opening and closing of the drain pipe 22 .

[0030] As a technical optimization solution of the present invention, a temperature sensor 23 is provided inside the heating chamber 5 , and a sealing door 24 communicating with the filter chamber 4 is movably connected to the front end surface of the housing 1 .

[0031] In this embodiment, the temperature sensor 23 monitors the internal temperature of the heating chamber 5 in real time to facilitate temperature control, and the sealing door 24 facilitates the cleaning and replacement of the filter plate 9 inside the filter chamber 4.

[0032] Working principle: the gas first enters the air inlet pipe 6, and then enters the purified water 7 from multiple air distribution pipes 8. The purified water 7 is a normal water source. The starting motor 17 drives the stirring rod 16 to rotate and stir, so that the gas and the purified water 7 are fully mixed, so that the ammonia is fully in contact with the water source to achieve a good purification effect. The first air pump 11 is started to draw the gas inside the water chamber 3 into the interior of the filter chamber 4 through the first air guide pipe 12. The interior of the filter chamber 4 is detachably connected with multiple vertically arranged filter plates 9. The filter plates 9 include activated carbon plates, calcium oxide plates and sodium hydroxide plates, which can effectively filter carbon dioxide, ammonia and sulfur dioxide in the gas to improve the filtering effect. The second air pump 13 is further started to allow the gas to enter the interior of the heating chamber 5 through the second air guide pipe 14. The two heating rods 10 are started to heat the gas inside the heating chamber 5. The ammonia contained in the exhaust gas emitted by the gas nitriding furnace is decomposed into hydrogen and nitrogen by heat, and is ignited at the exhaust pipe 21 through an ignition device or manually, thereby purifying the exhaust gas emitted by the gas nitriding furnace, which is beneficial to reducing environmental pollution.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas nitriding furnace tail gas treatment device, comprising a housing (1), characterized in that: Two partitions (2) are fixedly connected to the interior of the shell (1), and the two partitions (2) divide the interior of the shell (1) into a water chamber (3), a filter chamber (4) and a heating chamber (5) arranged in sequence from bottom to top. Purified water (7) is arranged inside the water chamber (3), and a horizontally arranged air inlet pipe (6) is fixedly connected to the inner wall of the water chamber (3). The outer wall of the air inlet pipe (6) is connected to a plurality of evenly distributed air distribution pipes (8) extending to the interior of the purified water (7). The interior of the filter chamber (4) is detachably connected to a plurality of vertically arranged filter plates (9), and the interior of the heating chamber (5) is provided with two heating rods (10).

2. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: A first air pump (11) is installed on the right side of the outer wall of the housing (1), and the water chamber (3) and the filter chamber (4) are communicated with each other via the first air pump (11) and the first air guide pipe (12). A second air pump (13) is installed on the left side of the outer wall of the housing (1), and the filter chamber (4) and the heating chamber (5) are communicated with each other via the second air pump (13) and the second air guide pipe (14).

3. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: The inner bottom end of the water chamber (3) is rotatably connected to a rotating shaft (15), the top end of the rotating shaft (15) is fixedly connected to a stirring rod (16), and a motor (17) is installed at the bottom of the housing (1), and the output end of the motor (17) is fixedly connected to the rotating shaft (15).

4. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: Anti-splash screens (18) are fixedly connected to the front and rear sides of the outer wall of the air inlet pipe (6), and the other sides of the two anti-splash screens (18) are fixedly connected to the front and rear inner walls of the outer shell (1).

5. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: An air inlet (19) communicating with an air inlet pipe (6) is fixedly connected to the lower left side of the outer wall of the housing (1), an exhaust pump (20) is installed on the top of the housing (1), and an exhaust pipe (21) communicating with the heating chamber (5) is fixedly connected to the outer wall of the exhaust pump (20).

6. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: A drainage pipe (22) communicating with the water cavity (3) is fixedly connected to the lower right side of the outer wall of the housing (1), and a valve is provided on the outer wall of the drainage pipe (22).

7. The tail gas treatment device for a gas nitriding furnace according to claim 1, characterized in that: A temperature sensor (23) is provided inside the heating chamber (5), and a sealing door (24) communicating with the filter chamber (4) is movably connected to the front end surface of the housing (1).

Images