A hydrogen recovery device for bright annealing of stainless steel

Abstract

The utility model discloses a hydrogen recovery device for bright annealing of stainless steel, comprising a cooling condenser, wherein the upper end of the cooling condenser is provided with a water flow pipeline at a right position, the device is arranged with the cooling condenser at the outlet end of the reflux protective gas of the stainless steel bright annealing furnace, the outlet end of the steam-water separator is connected to the front-stage buffer tank, the outlet end of the front-stage buffer tank is connected to the inlet of a Roots blower, the outlet of the Roots blower is connected to an oil absorber, the outlet end of the oil absorber is connected to a deaerator, the outlet end of the deaerator is arranged with a cooler and a condenser in sequence, the outlet end of the condenser is connected to an adsorption regeneration drying device through the steam-water separator, the pure gas outlet end of the adsorption regeneration drying device is connected to a rear-stage buffer tank, the rear-stage buffer tank is connected to a pure hydrogen continuous annealing group, the regeneration gas exhaust port of the adsorption regeneration drying device is connected to the air inlet end of the cooling condenser, the regeneration hydrogen is recovered, and the hydrogen is fully recovered.

Description

Technical Field

[0001] The utility model belongs to the technical field related to a hydrogen recovery device for bright annealing of stainless steel, and in particular relates to a hydrogen recovery device for bright annealing of stainless steel. Background Art

[0002] The hydrogen recovery device for stainless steel bright annealing is a device specially used to recover and reuse hydrogen during the bright annealing process of stainless steel. Bright annealing is a heat treatment process designed to keep the surface of stainless steel bright and non-oxidized by heating it to a certain temperature and then slowly cooling it. Hydrogen is usually used as a protective gas in this process to prevent oxidation of the stainless steel surface.

[0003] During the bright annealing process of stainless steel, a large amount of hydrogen will be produced. If it is not recycled in time, it will not only cause waste of resources but also may pollute the environment. Therefore, the market needs a new device to solve the current problems. Utility Model Content

[0004] The purpose of the utility model is to provide a hydrogen recovery device for bright annealing of stainless steel, so as to solve the problem proposed in the above background technology that a large amount of hydrogen will be generated during the bright annealing of stainless steel. If it is not recovered and utilized in time, it will not only cause waste of resources but also may cause pollution to the environment. Therefore, the market needs a new device to solve the current problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogen recovery device for bright annealing of stainless steel, comprising a cooling condenser, wherein the upper end of the cooling condenser is provided with a water pipe at a right position, and the inner wall of the water pipe is provided with a sloped inner wall for drainage, and the sloped inner wall introduces the internal water flow into the water outlet at the lower end of the water pipe, and the water outlet opens the protective cover at the lower end to discharge the internal water, and the other end of the water pipe is connected to a steam-water separator, and the other end of the steam-water separator is connected to a front-stage buffer tank, and the front-stage buffer tank is connected to the front-stage buffer tank. The outlet port of the first-stage buffer tank is connected to a Roots blower, the upper end outlet position of the Roots blower is connected to an oil absorber, the outlet port of the oil absorber is connected to a deaerator, the outlet port of the deaerator is connected to a cooler, the other end position of the cooler is connected to a condenser A, the condenser A is connected to an adsorption regeneration drying device through a steam-water separator, the pure gas outlet of the adsorption regeneration drying device is connected to a rear-stage buffer tank, the other end position of the rear-stage buffer tank is connected to a pure hydrogen continuous withdrawal group, and the adsorption regeneration drying device is connected to a cooling condenser through a nitrogen pipeline at the upper end.

[0006] Preferably, a steam-water separator is provided at the air outlet of the cooling condenser.

[0007] Preferably, the cooling condenser is connected to the steam-water separator through a water flow pipe.

[0008] Preferably, the water pipe introduces the accumulated water inside to the inner position of the water outlet through the sloped inner wall, and the water is discharged through the water outlet after the protective cover is opened.

[0009] Preferably, the gas outlet port of the front-stage buffer tank is connected to the inlet of a Roots blower, and the Roots blower sucks and compresses the hydrogen.

[0010] Preferably, the outlet of the Roots blower is connected to an oil absorber, and the oil absorber removes oil stains in the hydrogen.

[0011] Preferably, the oil absorber is connected to a deaerator, and the deaerator removes oxygen from the hydrogen.

[0012] Preferably, the cooler and condenser A cool and condense water vapor in the hydrogen.

[0013] Compared with the prior art, the utility model provides a hydrogen recovery device for bright annealing of stainless steel, which has the following beneficial effects:

[0014] The device is provided with a cooling condenser at the outlet end of the reflux protective gas of the stainless steel bright annealing furnace, a steam-water separator is arranged at the outlet end of the cooling condenser, the outlet end of the steam-water separator is connected to the front-stage buffer tank, the outlet end of the front-stage buffer tank is connected to the inlet of the Roots blower, the outlet of the Roots blower is connected to the oil absorber, the outlet end of the oil absorber is connected to the deaerator, the outlet end of the deaerator is sequentially provided with a cooler and a condenser, the outlet end of the condenser is connected to the adsorption regeneration drying device through the steam-water separator, the pure gas outlet end of the adsorption regeneration drying device is connected to the rear-stage buffer tank, the rear-stage buffer tank is connected to the pure hydrogen continuous annealing group, the regeneration gas exhaust port of the adsorption regeneration drying device is connected to the air inlet end of the cooling condenser, the regenerated hydrogen is recovered, and the hydrogen is fully recovered.

[0015] The device is provided with a water outlet in the water flow pipe, the water outlet can prevent water accumulation inside the water flow pipe, and the inner wall of the water flow pipe is arranged as a sloped inner wall, the sloped inner wall guides the accumulated water to flow into the water outlet, and the protective cover can discharge the accumulated water inside after opening, so as to avoid water accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of a hydrogen recovery device for bright annealing of stainless steel.

[0017] Figure 2 The utility model is a schematic diagram of the internal structure of a water pipeline of a hydrogen recovery device for bright annealing of stainless steel.

[0018] In the figure: 1. Cooling condenser; 2. Steam-water separator; 3. Front buffer tank; 4. Roots blower; 5. Oil absorber; 6. Deaerator; 7. Cooler; 8. Condenser A; 9. Adsorption regeneration drying device; 10. Rear buffer tank; 11. Pure hydrogen continuous withdrawal group; 12. Nitrogen pipeline; 13. Water pipeline; 14. Protective cover; 15. Water outlet; 16. Sloped inner wall. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-2 A hydrogen recovery device for bright annealing of stainless steel shown in the figure comprises a cooling condenser 1, wherein a water pipe 13 is arranged at the upper end of the cooling condenser 1 at the right position, and a sloped inner wall 16 for drainage is arranged at the inner wall position of the water pipe 13, and the sloped inner wall 16 introduces the internal water flow into a water outlet 15 located at the lower end position of the water pipe 13, and the water outlet 15 opens the protective cover 14 at the lower end position to discharge the internal water, and a steam-water separator 2 is connected to the other end position of the water pipe 13, and the other end position of the steam-water separator 2 is connected to a front-stage buffer tank 3, and the gas outlet end of the front-stage buffer tank 3 The outlet position is connected with a Roots blower 4, the upper outlet position of the Roots blower 4 is connected with an oil absorber 5, the gas outlet port of the oil absorber 5 is connected with a deaerator 6, the gas outlet port of the deaerator 6 is connected with a cooler 7, the other end position of the cooler 7 is connected with a condenser A8, the condenser A8 is connected with an adsorption regeneration type drying device 9 through a steam-water separator 2, the pure gas outlet of the adsorption regeneration type drying device 9 is connected with a rear-stage buffer tank 10, the other end position of the rear-stage buffer tank 10 is connected with a pure hydrogen continuous withdrawal group 11, and the adsorption regeneration type drying device 9 is connected with a cooling condenser 1 through a nitrogen pipeline 12 at the upper end position.

[0021] A cooling condenser 1 is provided at the outlet end of the reflux protection gas, which is used to cool and condense water vapor in the hydrogen and remove the condensed water. The outlet end of the cooling condenser 1 is connected to the steam-water separator 2 for further separating water and hydrogen. The outlet end of the steam-water separator 2 is connected to the front-stage buffer tank 3 for smoothing the gas flow. The outlet end of the front-stage buffer tank 3 is connected to the inlet of the Roots blower 4. The Roots blower 4 is used to extract and compress the hydrogen. The outlet of the Roots blower 4 is connected to the oil absorber 5 for removing oil stains in the hydrogen. The outlet end of the oil absorber 5 is connected to the deaerator 6 for removing oxygen in the hydrogen. The outlet end of the deaerator 6 is sequentially arranged with a cooler 7 and a condenser for cooling and condensing water vapor in the hydrogen and removing moisture. The outlet end of the condenser is connected to the adsorption regeneration drying device 9 through the steam-water separator 2 for further removing hydrogen. The moisture in the air, the pure gas outlet end of the adsorption regeneration drying device 9 is connected to the rear-stage buffer tank 10, and the rear-stage buffer tank 10 is connected to the pure hydrogen continuous withdrawal group 11, which is used to collect pure regenerated hydrogen. The regeneration gas exhaust port of the adsorption regeneration drying device 9 is connected to the air inlet end of the cooling condenser 1, so as to realize the full recovery and recycling of hydrogen and ensure the full utilization of hydrogen resources in the system. In this way, through the processing and purification of multiple links, the efficient recovery and reuse of hydrogen are ensured, while the purity and quality of hydrogen are guaranteed, and the purpose of energy saving and environmental protection is achieved.

[0022] like Figure 1 As shown, the air outlet of the cooling condenser 1 is provided with a steam-water separator 2, and the cooling condenser 1 is connected with the steam-water separator 2 through a water pipe 13, and the water pipe 13 introduces the internal accumulated water into the internal position of the water outlet 15 through the slope inner wall 16, and the protective cover 14 is opened and discharged through the water outlet 15, and the air outlet port of the front-stage buffer tank 3 is connected to the inlet of the Roots blower 4, and the Roots blower 4 sucks and compresses the hydrogen, and the outlet of the Roots blower 4 is connected to the oil absorber 5, and the oil absorber 5 removes oil stains in the hydrogen, and the oil absorber 5 is connected to the deaerator 6, and the deaerator 6 removes oxygen in the hydrogen, and the cooler 7 and the condenser A8 cool and condense the water vapor in the hydrogen.

[0023] A steam-water separator 2 is provided at the air outlet end of the cooling condenser 1, and the air outlet end of the steam-water separator 2 is connected to the front-stage buffer tank 3, and the air outlet end of the front-stage buffer tank 3 is connected to the inlet of the Roots blower 4, and the outlet of the Roots blower 4 is connected to the oil absorber 5, and the air outlet end of the oil absorber 5 is connected to the deaerator 6, and the air outlet end of the deaerator 6 is sequentially arranged with a cooler 7 and a condenser, and the air outlet end of the condenser is connected to the adsorption regeneration drying device 9 through the steam-water separator 2, and the pure gas outlet end of the adsorption regeneration drying device 9 is connected to the rear-stage buffer tank 10, and the rear-stage buffer tank 10 is connected to the pure hydrogen continuous withdrawal group 11, and the regenerated gas exhaust port of the adsorption regeneration drying device 9 is connected to the air inlet end of the cooling condenser 1 to recover the regenerated hydrogen.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen recovery device for bright annealing of stainless steel, characterized in that: The invention comprises a cooling condenser (1), wherein a water flow pipe (13) is arranged at the upper end of the cooling condenser (1) at a right position, and a sloped inner wall (16) for drainage is arranged at the inner wall position of the water flow pipe (13), and the sloped inner wall (16) guides the internal water flow to a water outlet (15) at the lower end position of the water flow pipe (13), and the water outlet (15) can discharge the internal water by opening a protective cover (14) at the lower end position, and the other end position of the water flow pipe (13) is connected to a steam-water separator (2), and the other end position of the steam-water separator (2) is connected to a front-stage buffer tank (3), and the air outlet position of the front-stage buffer tank (3) is connected to a Roots blower (4). The upper outlet position of the Roots blower (4) is connected to an oil absorber (5), the gas outlet port of the oil absorber (5) is connected to a deaerator (6), the gas outlet port of the deaerator (6) is connected to a cooler (7), the other end position of the cooler (7) is connected to a condenser A (8), the condenser A (8) is connected to an adsorption regeneration drying device (9) through a steam-water separator (2), the pure gas outlet of the adsorption regeneration drying device (9) is connected to a rear-stage buffer tank (10), the other end position of the rear-stage buffer tank (10) is connected to a pure hydrogen continuous withdrawal group (11), and the adsorption regeneration drying device (9) is connected to the cooling condenser (1) through a nitrogen pipeline (12) at the upper end position.

2. A hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The gas outlet of the cooling condenser (1) is provided with a steam-water separator (2).

3. A hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The cooling condenser (1) is connected to the steam-water separator (2) via a water flow pipe (13).

4. A hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The water pipe (13) guides the accumulated water inside to the inner position of the water outlet (15) through the sloped inner wall (16), and the water is discharged through the water outlet (15) after the protective cover (14) is opened.

5. The hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The gas outlet port of the front-stage buffer tank (3) is connected to the inlet port of a Roots blower (4), and the Roots blower (4) sucks and compresses hydrogen.

6. A hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The outlet of the Roots blower (4) is connected to an oil absorber (5), and the oil absorber (5) removes oil stains in the hydrogen.

7. A hydrogen recovery device for bright annealing of stainless steel according to claim 6, characterized in that: The oil absorber (5) is connected to a deaerator (6), and the deaerator (6) removes oxygen from the hydrogen.

8. The hydrogen recovery device for bright annealing of stainless steel according to claim 1, characterized in that: The cooler (7) and the condenser A (8) cool and condense water vapor in the hydrogen.

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