Air intake and exhaust system of hydrogen compressor

Abstract

The utility model provides a hydrogen compressor intake and exhaust system, comprising: a hydrogen pretreatment unit, which comprises a gas source, a washing tower, a deoxygenization tower, a water mist trap and a temperature swing adsorption tower that are sequentially communicated through a hydrogen pipeline, the low-pressure hydrogen treatment device is used for sequentially carrying out cooling, impurity removal, oxygen removal, water removal and drying treatment on low-pressure hydrogen provided by a gas source to obtain purified low-pressure hydrogen; a gas inlet of the hydrogen compressor body is communicated with a gas outlet of the temperature swing adsorption tower through a gas inlet pipe, a gas outlet of the hydrogen compressor body is communicated with a gas outlet pipe, and the hydrogen compressor body is used for compressing purified low-pressure hydrogen entering the hydrogen compressor body and obtaining high-pressure hydrogen; wherein an air inlet valve is arranged on the air inlet pipe, and an exhaust valve is arranged on the exhaust pipe. According to the hydrogen compressor, the purity of the hydrogen is improved, the situation that the hydrogen is burnt or exploded due to static electricity or other ignition sources in the process of compressing the hydrogen through the hydrogen compressor body is avoided, and then the safety of the hydrogen compressor body in the process of compressing the hydrogen is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hydrogen compressors, in particular to a hydrogen compressor air intake and exhaust system. BACKGROUND

[0002] The hydrogen compressor is a device designed for hydrogen compression and pressurization requirements, and its main function is to raise the hydrogen pressure from a lower pressure to a higher pressure to meet the application requirements in the fields of industrial production, energy storage or transportation, and can be widely applied to various links of the hydrogen energy industry chain, including hydrogen refueling stations, industrial production, energy storage and other fields.

[0003] However, hydrogen is usually derived from water electrolysis or other hydrogen production processes, and its temperature is relatively high (about 80 DEG C), and oxygen and other substances may be produced in the electrolysis process, and hydrogen is a highly flammable gas that can react violently with oxygen under ignition or heating conditions, so the hydrogen may ignite or explode due to static electricity or other ignition sources during the compression process, for example: the electrical equipment inside the compressor may produce electric sparks, thereby igniting the hydrogen and causing danger, resulting in low safety of the hydrogen compressor during the process of compressing hydrogen. CONTENT OF THE UTILITY MODEL

[0004] The application provides a hydrogen compressor air intake and exhaust system to solve the technical problems described in the background.

[0005] To solve the above technical problems, the application adopts the following technical solutions:

[0006] The application provides a hydrogen compressor air intake and exhaust system, comprising:

[0007] A hydrogen pretreatment unit, which comprises a gas source, a washing tower, an oxygen removal tower, a water mist trap and a temperature swing adsorption tower connected in sequence through a hydrogen pipeline, and is used for sequentially cooling, removing impurities, removing oxygen, removing water and drying the low-pressure hydrogen provided by the gas source to obtain purified low-pressure hydrogen;

[0008] A hydrogen compressor body, the gas inlet of the hydrogen compressor body is communicated with the gas outlet of the temperature swing adsorption tower through an air inlet pipe, and an exhaust pipe is communicated with the exhaust port of the hydrogen compressor body, for compressing the purified low-pressure hydrogen entering the hydrogen compressor body and obtaining high-pressure hydrogen;

[0009] Wherein, the air inlet pipe is provided with an air inlet valve, and the exhaust pipe is provided with an exhaust valve.

[0010] Optionally, the exhaust pipe is communicated with a first hydrogen storage tank at one end away from the hydrogen compressor body, a first branch pipe is communicated with the exhaust pipe between the exhaust valve and the first hydrogen storage tank, and the first branch pipe is communicated with a hydrogen utilization device at one end away from the exhaust pipe.

[0011] The first branch pipe is provided with a first flow regulating valve, and the exhaust pipe is provided with a second flow regulating valve on the pipe between the first branch pipe and the first hydrogen storage tank.

[0012] Optionally, the hydrogen compressor inlet and exhaust system further comprises a plurality of second hydrogen storage tanks, and the plurality of second hydrogen storage tanks are communicated on the exhaust pipe between the first branch pipe and the second flow regulating valve through second branch pipes.

[0013] Each of the second branch pipes is provided with a third flow regulating valve.

[0014] Optionally, the first hydrogen storage tank and the plurality of second hydrogen storage tanks are each provided with a leakage alarm device.

[0015] The first hydrogen storage tank and the plurality of second hydrogen storage tanks are each made of austenitic stainless steel or chromium-molybdenum steel.

[0016] Optionally, the exhaust pipe is communicated with a pressure relief pipe on the pipe between the hydrogen compressor body and the exhaust valve, one end of the pressure relief pipe away from the exhaust pipe is communicated with a third hydrogen storage tank, and the pressure relief pipe is provided with a fourth flow regulating valve.

[0017] Optionally, the inlet pipe is communicated with a buffer tank through a buffer pipe on the pipe between the inlet valve and the hydrogen compressor body, and the exhaust pipe is communicated with a buffer tank through a buffer pipe on the pipe close to the hydrogen compressor body.

[0018] Optionally, the inlet of the washing tower is arranged close to the bottom of the washing tower, the outlet of the washing tower is arranged at the top of the washing tower, and the washing tower is communicated with a water spraying pipe, the water spraying pipe penetrates the side wall of the top of the washing tower and extends into the washing tower, and the water spraying pipe is provided with a spray head on the pipe in the washing tower.

[0019] Optionally, a booster pump is arranged on the hydrogen pipeline between the gas source and the washing tower.

[0020] The hydrogen compressor inlet and outlet system provided by the application, through the scrubbing tower, oxygen removal tower, water mist trap and temperature swing adsorption tower in the hydrogen pretreatment unit, the hydrogen provided by the gas source is sequentially subjected to cooling and washing, impurity removal, oxygen removal, water removal and drying treatment to obtain purified low-pressure hydrogen, and at the same time, the impurity gases such as chlorine and oxygen in the hydrogen are removed, thereby improving the purity of the hydrogen, avoiding the case that the hydrogen is ignited and combusted or exploded due to static electricity or other ignition sources in the process of being compressed by the hydrogen compressor body, and further improving the safety in the process of compressing the hydrogen by the hydrogen compressor body. In addition, the purified low-pressure hydrogen flow entering the hydrogen compressor body is controlled through the inlet valve arranged on the inlet pipe, and at the same time, the high-pressure hydrogen flow discharged from the hydrogen compressor body is controlled through the outlet valve on the outlet pipe, so that the inlet and outlet processes of the hydrogen compressor body are accurate and controllable, the compression efficiency of the hydrogen compressor body is easy to be grasped, and thus the energy density of the hydrogen is grasped, the energy consumption is reduced, and the overall efficiency of the hydrogen compressor inlet and outlet system in the application is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 The structural block diagram of the hydrogen compressor inlet and outlet system provided by an embodiment of the application is shown in the figure.

[0023] Figure 2 The structural schematic diagram of the hydrogen compressor inlet and outlet system provided by an embodiment of the application is shown in the figure.

[0024] Figure 3 The structural schematic diagram of the hydrogen compressor inlet and outlet system provided by another embodiment of the application is shown in the figure.

[0025] Figure 4 The structural schematic diagram of the scrubbing tower provided by an embodiment of the application is shown in the figure.

[0026] In the figure: 100, hydrogen pretreatment unit; 101, gas source; 102, washing tower; 103, oxygen removal tower; 104, water mist catcher; 105, temperature swing adsorption tower; 201, hydrogen pipeline; 2011, booster pump; 202, air inlet pipe; 2021, air inlet valve; 203, exhaust pipe; 2031, exhaust valve; 2032, first hydrogen storage tank; 2033, second flow regulating valve; 204, first branch pipe; 2041, hydrogen utilization device; 2042, first flow regulating valve; 205, second branch pipe; 2051, third flow regulating valve; 206, pressure relief pipe; 2061, third hydrogen storage tank; 2062, fourth flow regulating valve; 207, buffer pipe; 2071, buffer tank; 400, second hydrogen storage tank; 500, water injection pipe; 501, spray head. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the scope of protection of the present application.

[0028] Reference Figures 1 to 4 The present application provides a hydrogen compressor inlet and exhaust system, comprising:

[0029] The hydrogen pretreatment unit 100 includes a gas source 101, a washing tower 102, an oxygen removal tower 103, a water mist trap 104 and a temperature swing adsorption tower 105 which are sequentially communicated through a hydrogen pipeline 201, and is used for sequentially performing cooling, impurity removal, oxygen removal, water removal and drying treatment on the low-pressure hydrogen provided by the gas source 101 to obtain purified low-pressure hydrogen; wherein the gas source 101 can be an electrolytic water hydrogen production device, a methanol cracking hydrogen production device, etc., and can be specifically set according to the actual situation, and the purpose is to provide collateral hydrogen. Therefore, the present application does not make further limitation on it here. Since the prepared hydrogen has a temperature of about 80℃, the high temperature increases the risk of explosion during the hydrogen compression process. Therefore, by the washing tower 102, not only the hydrogen can be cooled, but also the particulate impurities in the hydrogen can be washed away to remove the particulate impurities in the hydrogen, and then the oxygen, water and hydrogen in the hydrogen are sequentially removed by the oxygen removal tower 103, the water mist trap 104 and the temperature swing adsorption tower 105, and the hydrogen is dried, so that dry and pure low-pressure hydrogen is obtained. In addition, the specifications and models of the oxygen removal tower 103, the water mist trap 104 and the temperature swing adsorption tower 105 can be set according to actual needs, and the present application does not make specific limitation on them here. The temperature swing adsorption tower 105 alternately performs adsorption and regeneration operation based on the high adsorption capacity of the adsorbent to impurities at low temperature and the desorption capacity of the adsorbate (i.e. the particulate impurities contained in the hydrogen in the present application) at high temperature, so as to realize continuous gas supply and improve the purity of the hydrogen.

[0030] The hydrogen compressor body 300 has an air inlet which is communicated with the air outlet of the temperature swing adsorption tower 105 through an air inlet pipe 202, and an exhaust pipe 203 is communicated with the exhaust port thereof, for compressing the purified low-pressure hydrogen entering therein and obtaining high-pressure hydrogen; wherein the specifications and models of the hydrogen compressor body 300 can be set according to actual needs, and the present application does not make specific limitation on them here, and the structure of the hydrogen compressor body 300 can refer to the existing hydrogen compressor, and the present application does not make specific elaboration on it here.

[0031] Specifically, the air inlet valve 2021 is used to control the flow of low-pressure hydrogen entering the hydrogen compressor body 300, and the exhaust valve 2031 is used to control the flow of high-pressure hydrogen discharged from the hydrogen compressor body 300.

[0032] The hydrogen compressor inlet and outlet system provided by the application, through the scrubbing tower 102, the oxygen removal tower 103, the water mist catcher 104 and the temperature swing adsorption tower 105 in the hydrogen pretreatment unit 100, the hydrogen provided by the gas source 101 is sequentially subjected to cooling and washing, impurity removal, oxygen removal, water removal and drying treatment to obtain purified low-pressure hydrogen, and at the same time, the impurity gases such as chlorine and oxygen in the hydrogen are removed, thereby improving the purity of the hydrogen, avoiding the case that the hydrogen is ignited and combusted or exploded due to static electricity or other ignition sources in the process of being compressed by the hydrogen compressor body 300, and further improving the safety in the process of compressing the hydrogen by the hydrogen compressor body 300. In addition, the purified low-pressure hydrogen flow entering the hydrogen compressor body 300 is controlled through the inlet valve 2021 arranged on the inlet pipe 202, and at the same time, the high-pressure hydrogen flow discharged from the hydrogen compressor body 300 is controlled through the exhaust valve 2031 arranged on the exhaust pipe 203, so that the inlet and outlet processes of the hydrogen compressor body 300 are accurate and controllable, the compression efficiency of the hydrogen compressor body 300 is easy to be grasped, and thereby the energy density of the hydrogen is grasped, the energy consumption is reduced, and the overall efficiency of the hydrogen compressor inlet and outlet system in the application is improved.

[0033] In some embodiments, with reference to Figure 2 and Figure 3 , the exhaust pipe 203 is communicated with a first hydrogen storage tank 2032 away from one end of the hydrogen compressor body 300, a first branch pipe 204 is communicated with the first hydrogen storage tank 2032 on the pipe body between the exhaust valve 2031 and the first hydrogen storage tank 2032, and a hydrogen utilization device 2041 is communicated with the first branch pipe 204 away from the exhaust pipe 203; wherein the hydrogen can be stored through the first hydrogen storage tank 2032, and the hydrogen can be directly utilized through the hydrogen utilization device 2041, thereby providing multiple uses of the compressed hydrogen, and the hydrogen utilization device 2041 is a hydrogen power generation device, a hydrogen burner, a fuel cell, etc., which can be specifically set according to actual needs, and the application does not make specific limitations here.

[0034] In addition, the first branch pipe 204 is provided with a first flow regulating valve 2042, and the exhaust pipe 203 is provided with a second flow regulating valve 2033 on the pipe body between the first branch pipe 204 and the first hydrogen storage tank 2032. Wherein, the flow of hydrogen entering the hydrogen utilization device 2041 is adjusted and measured through the first flow regulating valve 2042, so as to facilitate the utilization rate of hydrogen by the hydrogen utilization device 2041. The second flow regulating valve 2033 can measure the flow of hydrogen entering the first hydrogen storage tank 2032, so as to facilitate the amount of hydrogen stored in the first hydrogen storage tank 2032.

[0035] In some embodiments, with reference to Figure 3The hydrogen compressor inlet and exhaust system in the application further comprises a plurality of second hydrogen storage tanks 400, each of the plurality of second hydrogen storage tanks 400 is communicated on the exhaust pipe 203 between the first branch pipe 204 and the second flow regulating valve 2033 through a second branch pipe 205, and a third flow regulating valve 2051 is arranged on each second branch pipe 205.

[0036] In the above embodiment, since the volume of the hydrogen gas that can be stored in the first hydrogen storage tank 2032 is limited, when the hydrogen gas stored in the first hydrogen storage tank 2032 approaches the maximum limit of the hydrogen gas to be stored in the first hydrogen storage tank 2032, the first flow regulating valve 2042 is closed, and any one third flow regulating valve 2051 or a plurality of third flow regulating valves 2051 is opened, so as to realize the storage of high-pressure hydrogen gas by one second hydrogen storage tank 400 or a plurality of second hydrogen storage tanks 400, thereby ensuring the continuity of the high-pressure hydrogen gas storage process.

[0037] In some embodiments, the first hydrogen storage tank 2032 and the plurality of second hydrogen storage tanks 400 in the application are each provided with a leakage alarm device; wherein the leakage alarm device is used to detect whether the first hydrogen storage tank 2032 and the second hydrogen storage tank 400 have hydrogen leakage, so as to avoid safety hazards and improve the safety of the first hydrogen storage tank 2032 and the second hydrogen storage tank 400 in storing hydrogen. The specifications and models of the leakage alarm device can be set according to actual needs, and the application does not make specific limitations on them.

[0038] In addition, the first hydrogen storage tank 2032 and the plurality of second hydrogen storage tanks 400 are made of austenitic stainless steel or chromium-molybdenum steel material. The first hydrogen storage tank 2032 and the second hydrogen storage tank 400 made of austenitic stainless steel or chromium-molybdenum steel material have significant advantages in low-temperature performance, hydrogen embrittlement resistance, high strength, corrosion resistance and welding performance, etc., so that the hydrogen storage process is safer.

[0039] In some embodiments, referring to Figure 2 and Figure 3 The exhaust pipe 203 in the application is communicated with a pressure relief pipe 206 on the pipe body between the hydrogen compressor body 300 and the exhaust valve 2031, the end of the pressure relief pipe 206 away from the exhaust pipe 203 is communicated with a third hydrogen storage tank 2061 and is provided with a fourth flow regulating valve 2062.

[0040] In the above embodiment, since hydrogen is a flammable and explosive gas, if the pressure in the hydrogen compressor body 300 is too high, an explosion accident can be caused, and opening the fourth flow regulating valve 2062 and discharging the hydrogen gas causing the pressure in the hydrogen compressor body 300 to be too high into the third hydrogen storage tank 2061 through the pressure relief pipe 206 can effectively avoid the safety hazards caused by the pressure in the hydrogen compressor body 300 being too high. In addition, when the equipment needs to be repaired, opening the fourth flow regulating valve 2062 and discharging the hydrogen gas can reduce the safety risk during the repair process and improve the repair efficiency.

[0041] In some embodiments, referring to Figure 2 and Figure 3 The inlet pipe 202 in the present application is communicated with the buffer tank 2071 through the buffer pipe 207 on the pipe body between the inlet valve 2021 and the hydrogen compressor body 300, and the pipe body of the exhaust pipe 203 close to the hydrogen compressor body 300.

[0042] In the above embodiment, since the buffer tank 2071 can adjust the pressure and flow to prevent the system from being unstable due to a sudden increase in gas consumption. The communication of the buffer tank 2071 through the buffer pipe 207 on the inlet pipe 202 and the exhaust pipe 203 can effectively reduce the airflow pulsation and make the airflow speed more uniform, thereby reducing the power consumption and vibration of the hydrogen compressor body 300, and making the hydrogen compressor inlet and exhaust system in the present application work more smoothly. The specifications and models of the buffer tank 2071 can be set according to actual needs, which are not limited in the present application.

[0043] In some embodiments, referring to Figure 4 The inlet of the scrubber 102 in the present application is opened close to the bottom thereof, the outlet of the scrubber 102 is opened at the top thereof, and the scrubber 102 is communicated with the water spraying pipe 500, the water spraying pipe 500 penetrates the side wall of the top of the scrubber 102 and extends into the scrubber 102, and the pipe body of the water spraying pipe 500 in the scrubber 102 is provided with the spray head 501. The end of the water spraying pipe 500 outside the scrubber 102 is used to communicate with the water source, and the water pump is arranged on the water spraying pipe 500. The bottom of the scrubber 102 is provided with a drain pipe, and the drain pipe is provided with a stop valve (not shown in the figure).

[0044] In the above embodiments, water in the water source is sprayed from top to bottom into the washing tower 102 through the water spraying pipe 500 and the shower head 501 by the water pump. Since the density of hydrogen is much lower than that of air, the hydrogen diffuses from bottom to top in the washing tower 102, and heat exchange occurs between the hydrogen and the water falling from top to bottom in the washing tower 102. The water carries the heat and the particulate impurities in the hydrogen to the bottom of the washing tower 102. The washed water containing impurities and heated water is discharged through the drain pipe after the drain valve is opened. In this way, the hydrogen is cooled and washed, and the particulate impurities in the hydrogen are removed.

[0045] In some embodiments, with reference to Figure 2 and Figure 3 , a booster pump 2011 is arranged on the hydrogen pipeline 201 between the gas source 101 and the washing tower 102. The booster pump 2011 is used to provide power for the hydrogen in the gas source 101 to enter the washing tower 102 and to flow sequentially between the washing tower 102, the oxygen removal tower 103, the water mist trap 104, the temperature swing adsorption tower 105, and the hydrogen compressor body 300. In addition, the specifications and models of the booster pump 2011 can be selected according to actual needs, and the present application does not make specific limitations thereto.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydrogen compressor intake and exhaust system characterized by, The utility model relates to a hydrogen pressure machine, including: A hydrogen pretreatment unit (100) comprising a gas source (101), a washing tower (102), a deoxygenation tower (103), a water mist catcher (104) and a temperature swing adsorption tower (105) sequentially communicated through a hydrogen pipeline (201), and used for sequentially performing cooling washing, impurity removal, oxygen removal, water removal and drying treatment on low-pressure hydrogen provided by the gas source (101) to obtain purified low-pressure hydrogen; A hydrogen compressor body (300) with an air inlet communicated with the air outlet of the temperature swing adsorption tower (105) through an air inlet pipe (202), and an air outlet communicated with an air outlet pipe (203) for compressing the purified low-pressure hydrogen entering the hydrogen compressor body (300) to obtain high-pressure hydrogen; Wherein, the air inlet pipe (202) is provided with an air inlet valve (2021), and the air outlet pipe (203) is provided with an air outlet valve (2031).

2. The hydrogen compressor intake and exhaust system of claim 1, wherein, The air outlet pipe (203) is communicated with a first hydrogen storage tank (2032) at one end away from the hydrogen compressor body (300), the air outlet pipe (203) is communicated with a first branch pipe (204) between the air outlet valve (2031) and the first hydrogen storage tank (2032), and the first branch pipe (204) is communicated with a hydrogen utilization device (2041) at one end away from the air outlet pipe (203). The first branch pipe (204) is provided with a first flow regulating valve (2042), and the air outlet pipe (203) is provided with a second flow regulating valve (2033) between the first branch pipe (204) and the first hydrogen storage tank (2032).

3. The hydrogen compressor intake and exhaust system of claim 2, wherein, A plurality of second hydrogen storage tanks (400) are communicated on the air outlet pipe (203) between the first branch pipe (204) and the second flow regulating valve (2033) through second branch pipes (205). Each second branch pipe (205) is provided with a third flow regulating valve (2051).

4. The hydrogen compressor intake and exhaust system of claim 3, wherein, The first hydrogen storage tank (2032) and the plurality of second hydrogen storage tanks (400) are provided with leakage alarm devices. The first hydrogen storage tank (2032) and the plurality of second hydrogen storage tanks (400) are made of austenitic stainless steel or chromium-molybdenum steel.

5. The hydrogen compressor intake and exhaust system of claim 1, wherein, The air outlet pipe (203) is communicated with a pressure relief pipe (206) between the hydrogen compressor body (300) and the air outlet valve (2031), the pressure relief pipe (206) is communicated with a third hydrogen storage tank (2061) at one end away from the air outlet pipe (203) and is provided with a fourth flow regulating valve (2062).

6. The hydrogen compressor intake and exhaust system of claim 1, wherein, The air inlet pipe (202) is communicated with a buffer tank (2071) through a buffer pipe (207) between the air inlet valve (2021) and the hydrogen compressor body (300), and the air outlet pipe (203) is communicated with the buffer tank (2071) through the buffer pipe (207) close to the hydrogen compressor body (300).

7. The hydrogen compressor intake and exhaust system of claim 1, wherein, The air inlet of the washing tower (102) is arranged near the bottom of the washing tower (102), the air outlet of the washing tower (102) is arranged at the top of the washing tower (102), and a water spraying pipe (500) is communicated with the top of the washing tower (102); the water spraying pipe (500) penetrates the side wall of the top of the washing tower (102) and extends into the washing tower (102); and a spraying head (501) is arranged on the water spraying pipe (500) in the washing tower (102).

8. The hydrogen compressor intake and exhaust system of any one of claims 1 to 7, wherein, A booster pump (2011) is arranged on the hydrogen pipeline (201) between the air source (101) and the washing tower (102).

Images