A hydrogen manufacturing apparatus

Abstract

The application relates to the technical field of hydrogen production, and discloses a hydrogen production device which comprises a raw material tail gas compressor, an adsorption tower, a first buffer tank, a filter group, a hydrogen compressor, a second buffer tank, a desorption gas buffer tank and a desorption gas compressor; the gas inlet of the adsorption tower is communicated with the gas outlet of the raw material tail gas compressor; the gas inlet of the first buffer tank is communicated with the hydrogen gas outlet of the adsorption tower; the filter group comprises a first filter and a second filter, the first filter and the second filter are arranged in parallel, the gas inlet of the first filter and the gas inlet of the second filter are both communicated with the gas outlet of the first buffer tank; the gas inlet of the hydrogen compressor is communicated with the gas outlets of the first filter and the second filter; and the gas inlet of the second buffer tank is communicated with the gas outlet of the hydrogen compressor. The hydrogen production device can improve the purity of hydrogen gas after adsorption by an adsorber.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production, in particular to a hydrogen production equipment. BACKGROUND

[0002] Hydrogen is a major industrial raw material, also the most important industrial gas and special gas, has a wide range of applications in petrochemical industry, electronic industry, metallurgical industry, food processing, float glass, fine organic synthesis and aerospace, etc. At the same time, hydrogen is also an ideal secondary energy.

[0003] It is understood that the preparation process of hydrogen is that the raw gas enters the raw gas buffer tank, then the pressure of the raw gas is raised by the raw gas compressor unit, and then the raw gas is gas-liquid separated by the gas-liquid separator; then, into multiple adsorbers, the desorption gas discharged from the adsorbers is pressurized by the compressor unit and then discharged to the heating furnace; the hydrogen gas discharged from the adsorbers is transported to the hydrogen production station by the hydrogen compressor for hydrogen loading. However, the above prior art has the following problems: the adsorbers are provided with activated carbon adsorbent, and in the production process of hydrogen, the activated carbon dust will mix into the hydrogen gas discharged from the adsorbers, thereby causing the purity of particulate matter in the hydrogen component to be unqualified. SUMMARY

[0004] The purpose of the present application is to provide a hydrogen production equipment to improve the purity of hydrogen after adsorption by the adsorber.

[0005] In order to achieve the above purpose, the present application provides a hydrogen production equipment, which comprises:

[0006] A raw material tail gas compressor, an air inlet of the raw material tail gas compressor is used for inputting raw material tail gas;

[0007] Seven adsorption towers, the seven adsorption towers are connected in parallel, and an air inlet of the adsorption tower is in communication with an air outlet of the raw material tail gas compressor;

[0008] A first buffer tank, an air inlet of the first buffer tank is in communication with a hydrogen gas outlet of the adsorption tower;

[0009] A filter group, the filter group comprises a first filter and a second filter, the first filter and the second filter are connected in parallel, an air inlet of the first filter and an air inlet of the second filter are both in communication with an air outlet of the first buffer tank, and one of the first filter and the second filter serves as a standby filter;

[0010] A hydrogen compressor, an air inlet of the hydrogen compressor is in communication with an air outlet of the first filter and an air outlet of the second filter.

[0011] a second buffer tank, an inlet of the second buffer tank being communicated with an outlet of the hydrogen compressor, and an outlet of the second buffer tank being communicated with a loading platform, a flare system and a hydrogen pipeline network in a plant;

[0012] a purge gas buffer tank, an inlet of the purge gas buffer tank being communicated with a purge gas outlet of the adsorption tower;

[0013] a purge gas compressor, an inlet of the purge gas compressor being communicated with an outlet of the purge gas buffer tank, and an outlet of the purge gas compressor being communicated with a heating furnace, in some embodiments of the present application, the first filter and the second filter have a precision of 4-6 μm.

[0014] In some embodiments of the present application, the first filter and the second filter have a precision of 5 μm.

[0015] In some embodiments of the present application, the outlet of the second buffer tank is connected to the flare system and the hydrogen pipeline network in the plant through an adjusting valve and a multi-stage flow limiting device.

[0016] In some embodiments of the present application, the multi-stage flow limiting device is a multi-stage flow limiting orifice plate.

[0017] In some embodiments of the present application, the inlet of the first filter is communicated with the outlet of the first buffer tank through a first on-off valve, and the outlet of the first filter is communicated with the inlet of the hydrogen compressor through a second on-off valve.

[0018] The inlet of the second filter is communicated with the outlet of the first buffer tank through a third on-off valve, and the outlet of the second filter is communicated with the inlet of the hydrogen compressor through a fourth on-off valve.

[0019] In some embodiments of the present application, the multi-stage flow limiting device is communicated with the flare system through a fifth on-off valve.

[0020] In some embodiments of the present application, the outlet of the second buffer tank is communicated with the loading platform through a sixth on-off valve, and the outlet of the second buffer tank is communicated with the hydrogen pipeline network in the plant through a seventh on-off valve.

[0021] The hydrogen manufacturing equipment provided by the embodiments of the present application has the following beneficial effects compared with the prior art:

[0022] (1) By setting the filter group, the filter group includes the first filter and the second filter, the air inlet of the first filter and the air inlet of the second filter are in communication with the air outlet of the first buffer tank, thereby, the first filter or the second filter filters the hydrogen gas discharged from the hydrogen gas outlet of the adsorption tower to filter the impurities contained in the hydrogen gas; in addition, since the first filter and the second filter are arranged in parallel, one of the first filter and the second filter serves as a backup filter, thereby, when one of the first filter and the second filter is blocked, the user can select the other filter to filter the hydrogen gas, thereby ensuring the normal filtration of the hydrogen gas;

[0023] (2) By setting the analysis gas buffer tank, the analysis gas buffer tank makes the pressure of the analysis gas more stable. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of a hydrogen gas manufacturing equipment according to an embodiment of the present application.

[0025] In the figure, 1, raw material tail gas compressor; 2, adsorption tower; 3, first buffer tank; 4, filter group; 41, first filter; 42, second filter; 5, hydrogen gas compressor; 6, second buffer tank; 7, first switch valve; 8, second switch valve; 9, third switch valve; 10, fourth switch valve; 11, multi-stage multi-hole limiting device; 12, analysis gas buffer tank; 13, analysis gas compressor; 14, fifth switch valve; 15, sixth switch valve; 16, seventh switch valve. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application will be further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] As Figure 1As shown, this embodiment of the invention provides a hydrogen production device, which includes a raw material tail gas compressor 1, an adsorption tower 2, a first buffer tank 3, a filter group 4, a hydrogen compressor 5, a second buffer tank 6, a desorption gas buffer tank 12, and a desorption gas compressor 13. The inlet of the raw material tail gas compressor 1 is used to input raw material tail gas; seven adsorption towers 2 are configured in parallel, and the inlets of the seven adsorption towers 2 are connected to the outlet of the raw material tail gas compressor 1; the inlet of the first buffer tank 3 is connected to the hydrogen outlet of the adsorption tower 2; the filter group 4 includes a first filter 41 and a second filter 42, which are configured in parallel, and the first filter 41... The inlet of the first filter 41 and the inlet of the second filter 42 are both connected to the outlet of the first buffer tank 3. One of the first filter 41 and the second filter 42 serves as a backup filter. The inlet of the hydrogen compressor 5 is connected to the outlet of the first filter 41 and the outlet of the second filter 42. The inlet of the second buffer tank 6 is connected to the outlet of the hydrogen compressor 5, and the outlet of the second buffer tank 6 is connected to the flare system, the loading platform, and the hydrogen pipeline network in the plant area. The inlet of the desorption gas buffer tank 12 is connected to the desorption gas outlet of the adsorption tower 2. The outlet of the desorption gas buffer tank 12 is connected to the inlet of the desorption gas compressor 13, and the outlet of the desorption gas compressor 13 is connected to the heating furnace.

[0029] Based on the above configuration, the hydrogen production equipment of this invention has the following advantages:

[0030] (1) By setting up a filter group 4, the filter group 4 includes a first filter 41 and a second filter 42. The air inlet of the first filter 41 and the air inlet of the second filter 42 are both connected to the air outlet of the first buffer tank 3. Thus, the first filter 41 or the second filter 42 filters the hydrogen gas discharged from the hydrogen gas outlet of the adsorption tower 2 to filter the impurities contained in the hydrogen gas.

[0031] Furthermore, since the first filter 41 and the second filter 42 are arranged in parallel, one of the first filter 41 and the second filter 42 serves as a backup filter. Thus, when one of the first filter 41 and the second filter 42 becomes clogged, the user can select the other filter to filter the hydrogen, thereby ensuring the normal filtration of the hydrogen.

[0032] (2) By setting the desorption gas buffer tank 12, the pressure of the desorption gas is made more stable.

[0033] In some embodiments, such as Figure 1 As shown, in order to ensure the filtration effect of the first filter 41 and the second filter 42 on hydrogen, the precision of the first filter 41 and the second filter 42 is 4μm-6μm.

[0034] For example, the precision of both the first filter 41 and the second filter 42 is 5 μm.

[0035] In some embodiments, such as Figure 1 As shown, the outlet of the second buffer tank 6 is connected to the flare system and the plant's hydrogen pipeline network via a regulating valve 17 and a multi-stage flow limiting device 11. Thus, by setting up the multi-stage flow limiting device 11, the hydrogen is depressurized, and the depressurized hydrogen flows back to the plant's hydrogen pipeline network and flare system. This avoids the frequent starting and stopping of the hydrogen compressor 5 during periods when loading is prohibited, which could cause the bolt preload to loosen and lead to flange leakage.

[0036] In some embodiments, such as Figure 1 As shown, the multi-stage flow limiting device 11 is a multi-stage flow limiting orifice plate. Therefore, when hydrogen gas passes through the multi-stage flow limiting orifice plate, a pressure drop will occur in the hydrogen gas.

[0037] In some embodiments, such as Figure 1 As shown, the multi-stage flow-limiting orifice plate is made of 304 stainless steel. This improves the strength and rigidity of the multi-stage flow-limiting orifice plate, thereby increasing its service life.

[0038] In some embodiments, such as Figure 1 As shown, the air inlet of the first filter 41 is connected to the air outlet of the first buffer tank 3 through the first switching valve 7, and the air outlet of the first filter 41 is connected to the air inlet of the hydrogen compressor 5 through the second switching valve 8.

[0039] The inlet of the second filter 42 is connected to the outlet of the first buffer tank 3 via the third switching valve 9, and the outlet of the second filter 42 is connected to the inlet of the hydrogen compressor 5 via the fourth switching valve 10. Thus, by setting the first switching valve 7 and the second switching valve 8, the flow of hydrogen through the first filter 41 into the hydrogen compressor 5 is controlled; and by setting the third switching valve 9 and the fourth switching valve 10, the flow of hydrogen through the second filter 42 into the hydrogen compressor 5 is controlled.

[0040] In some embodiments, such as Figure 1 As shown, the multi-stage flow limiting device 11 is connected to the flare system via a fifth switching valve 14. Therefore, by providing the fifth switching valve 14, the system can control whether hydrogen can enter the flare system.

[0041] In some embodiments, the gas outlet of the second buffer tank 6 is communicated with the loading platform through the sixth switch valve 15, and the gas outlet of the second buffer tank 6 is communicated with the plant hydrogen pipe network through the seventh switch valve 16. Thus, by setting the sixth switch valve 15, the sixth switch valve 15 can control whether the hydrogen can enter the gas inlet of the loading platform; by setting the seventh switch valve 16, the seventh switch valve 16 can control whether the hydrogen can enter the gas inlet of the plant hydrogen pipe network.

[0042] In summary, the hydrogen manufacturing equipment of the embodiment of the present application has the following advantages:

[0043] (1) By setting the filter group 4, the filter group 4 includes the first filter 41 and the second filter 42, the gas inlet of the first filter 41 and the gas inlet of the second filter 42 are communicated with the gas outlet of the first buffer tank 3, thereby the first filter 41 or the second filter 42 filters the hydrogen discharged from the hydrogen gas outlet of the adsorption tower 2 to filter the impurities contained in the hydrogen;

[0044] In addition, since the first filter 41 and the second filter 42 are connected in parallel, one of the first filter 41 and the second filter 42 serves as a backup filter, thereby when one of the first filter 41 and the second filter 42 is blocked, the user can select the other filter to filter the hydrogen, thereby ensuring the normal filtration of the hydrogen;

[0045] (2) By setting the resolving gas buffer tank 12, the resolving gas buffer tank 12 makes the pressure of the resolving gas more stable.

[0046] The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should be considered as the protection scope of the present application.

Claims

1. A hydrogen production apparatus, characterized in that, include: Raw material exhaust gas compressor, wherein the air inlet of the raw material exhaust gas compressor is used to input raw material exhaust gas; The adsorption tower is provided in a configuration of seven units, which are connected in parallel. The inlet of each adsorption tower is connected to the outlet of the raw material exhaust gas compressor. The first buffer tank has its inlet connected to the hydrogen outlet of the adsorption tower. The filter group includes a first filter and a second filter, which are arranged in parallel. The air inlet of the first filter and the air inlet of the second filter are both connected to the air outlet of the first buffer tank. One of the first filter and the second filter serves as a backup filter. A hydrogen compressor, wherein the inlet of the hydrogen compressor is connected to the outlet of the first filter and the outlet of the second filter; The second buffer tank has its inlet connected to the outlet of the hydrogen compressor, and its outlet connected to the loading platform, the flare system, and the plant's hydrogen pipeline network. A desorption gas buffer tank, wherein the inlet of the desorption gas buffer tank is connected to the desorption gas outlet of the adsorption tower; A desorbed gas compressor, wherein the inlet of the desorbed gas compressor is connected to the outlet of the desorbed gas buffer tank, and the outlet of the desorbed gas compressor is connected to a heating furnace; The outlet of the second buffer tank is connected to the flare system and the plant hydrogen pipeline network through a regulating valve and a multi-stage flow limiting device; The multi-stage flow limiting device is a multi-stage flow limiting orifice plate; The multi-stage flow limiting device is connected to the flare system via a fifth switching valve; The outlet of the second buffer tank is connected to the loading platform through the sixth switch valve, and the outlet of the second buffer tank is connected to the hydrogen pipeline network of the plant area through the seventh switch valve.

2. The hydrogen production equipment according to claim 1, characterized in that, The first filter and the second filter have an accuracy of 4μm-6μm.

3. The hydrogen production equipment according to claim 2, characterized in that, Both the first filter and the second filter have a precision of 5 μm.

4. The hydrogen production equipment according to claim 1, characterized in that, The inlet of the first filter is connected to the outlet of the first buffer tank through a first switching valve, and the outlet of the first filter is connected to the inlet of the hydrogen compressor through a second switching valve. The inlet of the second filter is connected to the outlet of the first buffer tank through a third switching valve, and the outlet of the second filter is connected to the inlet of the hydrogen compressor through a fourth switching valve.

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