Miniaturized natural gas hydrogen production device

Abstract

The utility model discloses a miniaturized natural gas hydrogen production device which comprises a natural gas heating electric furnace, a gas inlet pipe and a gas outlet pipe which are arranged on the natural gas heating electric furnace, and a heat exchanger communicated with the gas inlet pipe and the gas outlet pipe, a mixed gas pipe is arranged on a gas inlet of the heat exchanger, and a cooler is arranged on a gas outlet of the heat exchanger. A steam pipe and a natural gas pipe are arranged on the mixed gas pipe, a desalted water inlet, a desalted water metering pump and a desalted water heater are sequentially arranged on the steam pipe according to the flowing sequence of desalted water, and a natural gas inlet, a natural gas compressor and a desulfurizing tower are sequentially arranged on the natural gas pipe according to the flowing sequence of natural gas. A converter furnace pipe is arranged in the natural gas heating electric furnace, a catalyst is arranged in the converter furnace pipe, a gas outlet of the cooler is provided with a gas-liquid separator communicated with the gas outlet through a pipeline, and a gas outlet of the gas-liquid separator is provided with a hydrogen extraction mechanism communicated with the gas outlet through a pipeline. The device can be used for producing hydrogen from natural gas with the flow below 200Nm < 3 > / H.

Description

Technical Field

[0001] The utility model relates to a natural gas hydrogen production device, in particular to a miniaturized natural gas hydrogen production device. Background Art

[0002] Traditional natural gas hydrogen production equipment generally operates at more than 200Nm3 / H. The natural gas flow rate is too small to be suitable for this method of hydrogen production. For customers with natural gas and small gas consumption, they can only choose other hydrogen production methods such as methanol cracking or water electrolysis. Utility Model Content

[0003] The utility model aims to provide a miniaturized natural gas hydrogen production device to overcome the deficiencies of the prior art and solve the problem that the traditional natural gas hydrogen production device is not suitable for hydrogen production at a flow rate below 200Nm3 / H.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a miniaturized natural gas hydrogen production device, including a natural gas heating electric furnace and an air inlet pipe and an air outlet pipe arranged on the natural gas heating electric furnace, and also including a heat exchanger connected with the air inlet pipe and the air outlet pipe, the air inlet of the heat exchanger is provided with a mixed gas pipe, the air outlet is provided with a cooler, the mixed gas pipe is provided with a steam pipe and a natural gas pipe, the steam pipe is provided with a desalted water inlet, a desalted water metering pump and a desalted water heater in sequence according to the flow sequence of desalted water, the natural gas pipe is provided with a natural gas inlet, a natural gas compressor and a desulfurization tower in sequence according to the flow sequence of natural gas, the natural gas heating electric furnace is provided with a converter furnace, the converter furnace is provided with a catalyst, the air inlet pipe is connected with the catalyst in the converter furnace, the air outlet pipe is connected with the converter furnace, the air outlet of the cooler is provided with a vapor-liquid separator connected with the cooler through a pipeline, and the air outlet of the vapor-liquid separator is provided with a hydrogen extraction mechanism connected with the cooler through a pipeline.

[0005] Furthermore, a flow metering purity detection mechanism is provided on the gas outlet pipeline of the hydrogen extraction mechanism.

[0006] Furthermore, the cooler is a water cooler.

[0007] Furthermore, the natural gas compressor, desalted water metering pump, desulfurization tower, desalted water heater, converter furnace, natural gas heating furnace, heat exchanger, cooler, vapor-liquid separator and hydrogen extraction mechanism are all installed in a skid-type integrated manner.

[0008] Furthermore, the natural gas heating electric furnace is a miniaturized heating furnace that is electrically heated.

[0009] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a miniaturized natural gas hydrogen production device, the miniaturized equipment process is simpler, adopts a skid-mounted structure, and appears in an integrated manner. It does not require a large natural gas reformer, and only an electrically heated miniaturized heating furnace is required to meet the natural gas hydrogen production process requirements. It solves the problem that the natural gas hydrogen production device cannot produce a production capacity of less than 200Nm3 / H, and provides customers with more choices for miniaturized hydrogen production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0011] Figure 1 The utility model is a structural schematic diagram of a miniaturized natural gas hydrogen production device.

[0012] Among them: 1. Natural gas heating electric furnace; 2. Air inlet pipe; 3. Air outlet pipe; 4. Heat exchanger; 5. Mixed gas pipe; 6. Steam pipe; 7. Natural gas pipe; 8. Desalted water inlet; 9. Desalted water metering pump; 10. Desalted water heater; 11. Natural gas inlet; 12. Natural gas compressor; 13. Desulfurization tower; 14. Converter furnace; 15. Catalyst; 16. Cooler; 17. Vapor-liquid separator; 18. Hydrogen extraction mechanism. DETAILED DESCRIPTION

[0013] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0014] Aiming at the demand for natural gas hydrogen production devices, the designer of the utility model innovatively proposes a miniaturized natural gas hydrogen production device, which can produce hydrogen from natural gas with a flow rate of less than 200Nm3 / H.

[0015] like Figure 1As shown, a miniaturized natural gas hydrogen production device includes a natural gas heating electric furnace 1 and an air inlet pipe 2 and an air outlet pipe 3 arranged on the natural gas heating electric furnace 1, and also includes a heat exchanger 4 connected to the air inlet pipe 2 and the air outlet pipe 3, the air inlet of the heat exchanger 4 is provided with a mixed gas pipe 5, the air outlet is provided with a cooler 16, the mixed gas pipe 5 is provided with a steam pipe 6 and a natural gas pipe 7, the steam pipe 6 is provided with a desalted water inlet 8, a desalted water metering pump 9 and a desalted water heater 10 in sequence according to the flow order of the desalted water, and the natural gas pipe 7 is provided with a desalted water inlet 8, a desalted water metering pump 9 and a desalted water heater 10 in sequence according to the flow order of the desalted water. The natural gas flows through a natural gas inlet 11, a natural gas compressor 12 and a desulfurization tower 13 in sequence. A converter furnace 14 is provided in the natural gas heating electric furnace 1, and a catalyst 15 is provided in the converter furnace 14. The inlet pipe 2 is connected to the catalyst 15 in the converter furnace 14, and the outlet pipe 3 is connected to the converter furnace 14. A vapor-liquid separator 17 connected to the cooler 16 through a pipeline is provided on the outlet of the cooler 16, and a hydrogen extraction mechanism 18 connected to the cooler through a pipeline is provided on the outlet of the vapor-liquid separator 17.

[0016] The outlet pipe 3 of the hydrogen extraction mechanism 18 is provided with a flow metering purity detection mechanism.

[0017] The cooler 16 is a water cooler 16 .

[0018] The natural gas compressor 12, desalted water metering pump 9, desulfurization tower 13, desalted water heater 10, converter furnace 14, natural gas heating furnace 1, heat exchanger 4, cooler 16, vapor-liquid separator 17 and hydrogen extraction mechanism 18 are all installed in a skid-type integrated manner.

[0019] The natural gas heating electric furnace 1 is a miniaturized heating furnace that is electrically heated.

[0020] When in use, the raw natural gas is pressurized to 1.6MPa from the natural gas inlet 11 through the natural gas compressor 12, and then passes through the desulfurization tower 13 to remove the sulfur in the natural gas and enter the mixing tube. At this time, the sulfur content in the natural gas is less than 0.1ppm; at the same time, the desalted water is pressurized to 1.8MPa from the desalted water inlet 8 through the metering pump, and then heated to a vapor state by the desalted water heater 10 and enters the mixing tube, and then mixed with the desulfurized natural gas in the mixing tube and enters the heat exchanger 4 to be heated to about 500 degrees, and then enters the natural gas heating electric furnace 1 to react with the catalyst 15. The temperature in the natural gas heating electric furnace 1 is 850 degrees. The natural gas and water vapor react with the catalyst 15. The hydrogen and carbon dioxide mixture is converted into a mixture of hydrogen and carbon dioxide under the action of the gas. After the hydrogen and carbon dioxide mixture is discharged from the natural gas heating electric furnace 1, it is cooled by the heat exchanger 4. The temperature of the cooled hydrogen and carbon dioxide mixture is less than 300 degrees. It then enters the cooler 16 for cooling. At this time, the temperature of the hydrogen and carbon dioxide mixture is less than 50 degrees. The cooled hydrogen and carbon dioxide mixture enters the gas-liquid separator 17 to separate the liquid of the hydrogen and carbon dioxide mixture, and then enters the hydrogen extraction mechanism 18 at 1.4MPa to remove carbon dioxide, carbon monoxide and methane gas in the hydrogen and carbon dioxide mixture, purify the hydrogen, and finally the pure hydrogen is sent to the use point after being detected by the flow metering purity detection mechanism.

[0021] The utility model adopts the above structure to achieve the following beneficial effects: the utility model provides a miniaturized natural gas hydrogen production device, the miniaturized equipment process is simpler, adopts a skid-mounted structure, and appears in an integrated manner. It does not require a large natural gas reformer, and only an electrically heated miniaturized heating furnace is required to meet the natural gas hydrogen production process requirements. It solves the problem that the natural gas hydrogen production device cannot produce a production capacity of less than 200Nm3 / H, and provides customers with more choices for miniaturized hydrogen production equipment.

[0022] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A miniaturized natural gas hydrogen production device, comprising a natural gas heating furnace and an air inlet pipe and an air outlet pipe arranged on the natural gas heating furnace, characterized in that: It also includes a heat exchanger connected with the air inlet pipe and the air outlet pipe, the air inlet of the heat exchanger is provided with a mixed gas pipe, the air outlet is provided with a cooler, the mixed gas pipe is provided with a steam pipe and a natural gas pipe, the steam pipe is provided with a desalted water inlet, a desalted water metering pump and a desalted water heater in sequence according to the flow sequence of the desalted water, the natural gas pipe is provided with a natural gas inlet, a natural gas compressor and a desulfurization tower in sequence according to the flow sequence of the natural gas, the natural gas heating electric furnace is provided with a converter furnace core, the converter furnace core is provided with a catalyst, the air inlet pipe is connected with the catalyst in the converter furnace core, the air outlet pipe is connected with the converter furnace core, the air outlet of the cooler is provided with a vapor-liquid separator connected with the cooler through a pipeline, and the air outlet of the vapor-liquid separator is provided with a hydrogen extraction mechanism connected with the cooler through a pipeline.

2. The miniaturized natural gas hydrogen production device according to claim 1, characterized in that: A flow metering purity detection mechanism is provided on the gas outlet pipeline of the hydrogen extraction mechanism.

3. The miniaturized natural gas hydrogen production device according to claim 1, characterized in that: The cooler is a water cooler.

4. The miniaturized natural gas hydrogen production device according to claim 1, characterized in that: The natural gas compressor, desalted water metering pump, desulfurization tower, desalted water heater, converter furnace, natural gas heating electric furnace, heat exchanger, cooler, vapor-liquid separator and hydrogen extraction mechanism are all installed in a skid-type integrated manner.

5. The miniaturized natural gas hydrogen production device according to claim 1, characterized in that: The natural gas heating electric furnace is a miniaturized heating furnace that is electrically heated.

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