阅读说明：本技术 一种金属铝-水反应制氢的试验系统与方法 (Test system and method for producing hydrogen by metal aluminum-water reaction ) 是由 向小凤 白文刚 张波 高炜 杨玉 于 2021-09-09 设计创作，主要内容包括：本发明一种金属铝-水反应制氢的试验系统与方法,系统包括恒温反应系统,集气系统和抽气系统；恒温反应系统包括水浴锅和密封反应器；密封反应器为立式圆筒状,底部置于水浴锅内,顶部通过带小孔的顶盖设有抽气针管,侧壁上连接测量记录装置；集气系统包括集水瓶、冷凝装置、水槽和集气瓶；集气瓶为竖式圆管,顶端封口,底部设呈缩径开口的集气瓶缩径,侧壁上设有刻度线,且集气瓶0刻度线位于上方,内部通过设置的集气管与冷凝装置气体出口连通；集气瓶缩径一侧与水槽内壁固定；冷凝装置底部液体出口连接集水瓶,顶部气体入口通过与抽气针管出口连通,气体出口连接集气管；抽气系统包括抽气泵,通过集气瓶顶端的抽气管与集气瓶内部连通。(The invention relates to a test system and a method for producing hydrogen by a metal aluminum-water reaction, wherein the system comprises a constant temperature reaction system, a gas collection system and an air extraction system; the constant-temperature reaction system comprises a water bath kettle and a sealed reactor; the sealed reactor is in a vertical cylindrical shape, the bottom of the sealed reactor is arranged in a water bath kettle, the top of the sealed reactor is provided with an air exhaust needle tube through a top cover with a small hole, and the side wall of the sealed reactor is connected with a measurement recording device; the gas collection system comprises a water collection bottle, a condensing device, a water tank and a gas collection bottle; the gas collecting bottle is a vertical round pipe, the top end of the gas collecting bottle is sealed, the bottom of the gas collecting bottle is provided with a gas collecting bottle with a reducing opening, the side wall of the gas collecting bottle is provided with scale marks, and the scale mark 0 of the gas collecting bottle is positioned above the gas collecting bottle and is communicated with a gas outlet of the condensing device through the arranged gas collecting pipe; the reducing side of the gas collecting bottle is fixed with the inner wall of the water tank; the liquid outlet at the bottom of the condensing device is connected with a water collecting bottle, the gas inlet at the top of the condensing device is communicated with the outlet of the air extracting needle tube, and the gas outlet is connected with a gas collecting tube; the air exhaust system comprises an air exhaust pump which is communicated with the inside of the air collecting bottle through an air exhaust pipe at the top end of the air collecting bottle.)

1. A test system for producing hydrogen by a metal aluminum-water reaction is characterized by comprising a constant-temperature reaction system, a gas collection system and an air extraction system;

the constant-temperature reaction system comprises a water bath (2) and a sealed reactor (9); the sealed reactor (9) is in a vertical cylindrical shape, the bottom of the sealed reactor is arranged in the water bath (2), the top of the sealed reactor is provided with an air exhaust needle tube (10) through a top cover with a small hole, and the side wall of the sealed reactor is connected with a measurement recording device;

the gas collection system comprises a water collection bottle (13), a condensing device (14), a water tank (19) and a water collection bottle (20); the gas collecting bottle (20) is a vertical circular tube, the top end of the gas collecting bottle is sealed, the bottom of the gas collecting bottle is provided with a gas collecting bottle reducing opening (17), the side wall of the gas collecting bottle is provided with scale marks, and the scale mark (18) of the gas collecting bottle 0 is positioned above the gas collecting bottle, and the inside of the gas collecting bottle is communicated with a gas outlet of the condensing device (14) through the arranged gas collecting tube (16); one side of the reducing diameter (17) of the gas collecting bottle is fixed with the inner wall of the water tank (19); a liquid outlet at the bottom of the condensing device (14) is connected with a water collecting bottle (13), a gas inlet at the top is communicated with an outlet of the air extracting needle tube (10) through an arranged exhaust pipe (11), and a gas outlet is connected with a gas collecting pipe (16);

the air extraction system comprises an air extraction pump (23) which is communicated with the inside of the air collection bottle (20) through an air extraction pipe (24) at the top end of the air collection bottle (20).

2. The test system for producing hydrogen through a metal aluminum-water reaction as claimed in claim 1, wherein one end of the gas collecting pipe (16) extends into the gas collecting bottle (20) through the bottom opening of the reduced diameter (17) of the gas collecting bottle and is axially parallel to the gas collecting bottle (20), and the outlet end is higher than the water tank (19) and is located below the scale mark (18) 0 of the gas collecting bottle.

3. The test system for producing hydrogen by the metal aluminum-water reaction as claimed in claim 1, wherein the radius of the bottom end of the reduced diameter (17) of the gas collecting bottle is 1-2 times of the radius of the gas collecting pipe (16), and the side wall of the gas collecting bottle (20) is fixedly bonded with the inner wall of the water tank (19).

4. The test system for producing hydrogen by the metal aluminum-water reaction according to claim 1, wherein the condensing device (14) is composed of a multi-stage condensing pipe, and a dust filtering pipe (12) is arranged on the exhaust pipe (11) at the gas inlet; the dust filtering pipe (12) consists of a vertical pipe filled with fillers, and the bottom of the dust filtering pipe is connected with the water collecting bottle (13); the filler in the dust filtering pipe (12) adopts quartz sand or quartz cotton.

5. The test system for producing hydrogen by the metal aluminum-water reaction according to claim 1, wherein a gas collection knob switch (15) is arranged at a gas outlet of the condensing device (14); an air extraction knob switch (21) is arranged on an air extraction pipe (24) at the bottom of the air collection bottle (20).

6. The test system for producing hydrogen by the metal aluminum-water reaction according to claim 5, characterized in that a buffer bottle (22) is further arranged between the air pumping knob switch (21) and the air pump (23).

7. The test system for hydrogen production through metal aluminum-water reaction according to claim 1, wherein the measurement recording device comprises a thermocouple (3), a temperature control display (4), a data acquisition instrument (5) and a computer (6); the detection end of the thermocouple (3) is connected with the sealed reactor (9), and the output end of the thermocouple is connected with the input end of the temperature control display (4); the output end of the temperature control display (4) is connected with a computer (6) through a data acquisition instrument (5).

8. The test system for producing hydrogen by the metal aluminum-water reaction according to claim 1, wherein a super thermostat (1) is further connected to a water inlet pipe of the water bath (2).

9. A test method for producing hydrogen by a metallic aluminum-water reaction, which is based on the system of any one of claims 1 to 8, comprising,

placing deionized water into a sealed reactor (9), maintaining the constant temperature environment of the sealed reactor (9) by a water bath (2), and recording reaction temperature data in the sealed reactor (9) in real time by a measuring and recording device;

when the temperature reaches a set temperature and is constant, pouring mixed sample powder consisting of aluminum powder and an additive (8) into a sealed reactor (9) to form an aluminum water reaction liquid (7) to carry out a metal aluminum-water combustion reaction; after the gas after reaction is pumped out by the air pumping needle tube (10), the heavier liquid component is collected by the water collecting bottle (13), and the lighter gas phase component is condensed by the condensing device (14);

the condensed liquid substance is sent into a water collecting bottle (13), the light gas phase component is sent into a gas collecting bottle (20) with scales through a gas collecting pipe (16), the liquid level in the gas collecting bottle (20) is lifted to the scale mark (18) of the gas collecting bottle 0 through an air pump (23), the gas entering from the diameter reducing part (17) of the gas collecting bottle records the hydrogen production amount and the hydrogen production rate in a gas collecting and water discharging mode;

and measuring the collected gas for multiple times, and finishing the test when no gas is produced, namely the scale of the gas collecting bottle (20) is constant.

10. The method for testing the production of hydrogen by the metal aluminum-water reaction according to claim 9, comprising,

turning on an air extraction knob switch (21), operating an air extraction pump (23) to lift the liquid level of the air collection bottle (20) to the position of the scale mark (18) of the air collection bottle 0, and turning off the air extraction knob switch (21); turning on a gas collection knob switch (15), and simultaneously recording gas collection time and corresponding gas collection bottle (20) scales;

gas pumped from the sealed reactor (9) by the air pumping needle tube (10) is filtered to remove redundant solid phase and liquid phase in the gas by the dust filtering tube (12), and liquid generated after filtering is collected by the water collecting bottle (13);

the super thermostat (1) keeps the temperature of the water bath (2) constant.

Technical Field

The invention relates to the technical field of energy storage and utilization of metal aluminum fuel, in particular to a test system and a test method for hydrogen production through a metal aluminum-water reaction.

Background

In the face of the severe situation of depletion of fossil fuels, the comprehensive utilization of renewable energy sources is receiving attention. Among them, hydrogen fuel has higher chemical energy, and the combustion product is non-toxic and environment-friendly, and is a fossil fuel substitute with good prospect. However, the preparation cost of hydrogen is high, hydrogen production through the metal aluminum-water reaction is a research hotspot in recent years, and the metal aluminum-water hydrogen production can be directly prepared when needed, so that the problems of hydrogen storage and transportation safety are avoided.

Many researches at home and abroad are focused on the combustion characteristics of aluminum powder in different atmospheres, such as the reaction of the aluminum powder in air or nitrogen atmosphere, and the research on the combustion of the aluminum powder in a water vapor environment is less. The reaction and combustion of aluminum powder and water are mainly divided into an ignition process of aluminum powder particles, such as an ignition mechanism research of the aluminum powder particles, a flame structure research of aluminum powder combustion and the like, and a research of an aluminum-water combustion process, such as an aluminum-water combustion characteristic research, an aluminum-water combustion model research and the like. Compared with the foreign aluminum-water-based fuel research, the domestic related research starts later, but a series of explorations are carried out on the reaction aspect of the metallic aluminum-water-based fuel, such as the influence of the concentration of a combustion improver on the combustion starting speed, the thermodynamic characteristic analysis of the metallic aluminum-water reaction and the like.

However, the method has the problems that for the process of preparing hydrogen by the metal aluminum-water reaction, a layer of compact oxide film is arranged on the surface of the aluminum powder, and high-temperature melting and condensation are easy to occur in the combustion process, so that slag is formed by accumulation and combustion, the oxidation reaction of the internal simple substance aluminum is inhibited, the incomplete combustion phenomenon of the aluminum powder is caused, the combustion efficiency is reduced, and the maximum utilization rate of the aluminum powder cannot be met; moreover, there are few reports on the influence of the wet environmental conditions in which water vapor exists, the hydrogen production amount and the hydrogen production rate in the aluminum water reaction.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a test system and a test method for hydrogen production by a metal aluminum-water reaction, which have the advantages of reasonable design, simple operation, obvious effect, complete combustion and higher combustion efficiency.

The invention is realized by the following technical scheme:

a test system for producing hydrogen by a metal aluminum-water reaction comprises a constant temperature reaction system, a gas collection system and an air extraction system;

the constant-temperature reaction system comprises a water bath and a sealed reactor; the sealed reactor is in a vertical cylindrical shape, the bottom of the sealed reactor is arranged in a water bath kettle, the top of the sealed reactor is provided with an air exhaust needle tube through a top cover with a small hole, and the side wall of the sealed reactor is connected with a measurement recording device;

the gas collection system comprises a water collection bottle, a condensing device, a water tank and a gas collection bottle; the gas collecting bottle is a vertical circular tube, the top end of the gas collecting bottle is sealed, the bottom of the gas collecting bottle is provided with a gas collecting bottle reducing hole with a reducing opening, the side wall of the gas collecting bottle is provided with scale marks, and the scale mark 0 of the gas collecting bottle is positioned above the gas collecting bottle and is communicated with a gas outlet of the condensing device through the arranged gas collecting tube; one reduced diameter side of the gas collecting bottle is fixed with the inner wall of the water tank; a liquid outlet at the bottom of the condensing device is connected with a water collecting bottle, a gas inlet at the top of the condensing device is communicated with an outlet of the air exhaust needle tube through an exhaust pipe, and a gas outlet is connected with a gas collecting pipe;

the air extraction system comprises an air extraction pump which is communicated with the inside of the gas collecting bottle through an air extraction pipe at the top end of the gas collecting bottle.

Furthermore, one end of the gas collecting pipe extends into the gas collecting bottle through the reduced bottom opening of the gas collecting bottle and is axially parallel to the gas collecting bottle, and the outlet end of the gas collecting pipe is higher than the water tank and is positioned below the 0 scale mark of the gas collecting bottle.

Furthermore, the radius of the reduced bottom end of the gas collecting bottle is-times of the radius of the gas collecting pipe, and the side wall of the gas collecting bottle is fixedly bonded with the inner wall of the water tank.

Furthermore, the condensing device consists of a plurality of stages of condensing pipes, and a dust filtering pipe is arranged on an exhaust pipe at a gas inlet of the condensing device; the dust filtering pipe consists of a vertical pipe filled with filler, and the bottom of the dust filtering pipe is connected with the water collecting bottle; the filler in the dust filter tube is quartz sand or quartz cotton.

Further, a gas collection knob switch is arranged at a gas outlet of the condensing device; an air exhaust knob switch is arranged on the air exhaust pipe at the bottom of the air collection bottle.

Furthermore, a buffer bottle is arranged between the air pumping knob switch and the air pump.

Furthermore, the measurement recording device comprises a thermocouple, a temperature control display, a data acquisition instrument and a computer; the thermocouple detection end is connected with the sealed reactor, and the output end is connected with the input end of the temperature control display; the output end of the temperature control display is connected with a computer through a data acquisition instrument.

Furthermore, a super thermostat is connected to the water inlet pipe of the water bath.

A test method for producing hydrogen by a metal aluminum-water reaction comprises the following steps,

placing deionized water into a sealed reactor, maintaining the constant temperature environment of the sealed reactor by a water bath, and recording reaction temperature data in the sealed reactor in real time by a measuring and recording device;

when the temperature reaches a set temperature and is constant, pouring mixed sample powder consisting of aluminum powder and additives into a sealed reactor to generate a metal aluminum-water combustion reaction; after the gas after reaction is pumped out by the air exhaust needle tube, the heavier liquid component is collected by the water collecting bottle, and the lighter gas phase component is condensed by the condensing device;

the condensed liquid substance is sent into a water collecting bottle, the light gas phase component is sent into a gas collecting bottle with scales through a gas collecting pipe, the liquid level in the gas collecting bottle is lifted to the position of the scale mark 0 of the gas collecting bottle through an air pump, and the hydrogen yield and the hydrogen production rate are recorded through the gas collecting and water discharging mode through the gas entering from the diameter reducing position of the gas collecting bottle;

and measuring the collected gas for many times, and ending the test when no gas is produced, namely the scales of the gas collecting bottle are constant.

Further, the method comprises the following steps of,

turning on an air extraction knob switch, enabling an air extraction pump to work, lifting the liquid level of the air collection bottle to the 0 scale mark of the air collection bottle, and turning off the air extraction knob switch; opening a gas collection knob switch, and simultaneously recording gas collection time and corresponding gas collection bottle scales;

gas pumped out from the sealed reactor by the air pumping needle tube is filtered to remove redundant solid phase and liquid phase in the gas by the dust filtering tube, and liquid generated after filtering is collected by the water collecting bottle;

the super thermostat keeps the temperature of the water bath constant.

Compared with the prior art, the invention has the following beneficial technical effects:

the system of the invention is characterized in that a gas collecting bottle with a special structure is arranged in a water tank, hydrogen generated in a sealed reactor is sent into the gas collecting bottle by an air pump through an air exhaust needle tube, a condensing device and a gas collecting tube which are connected in sequence, and the gas collecting and draining are carried out while the hydrogen yield and the hydrogen production rate are recorded by utilizing the data recorded by a measuring and recording device and the scale change of the bottle body of the gas collecting bottle, so that the process is efficient and reliable, and the combustion efficiency and the aluminum powder utilization rate during the test can be effectively improved to the maximum; meanwhile, a water bath is used for providing constant temperature required by reaction for the sealed reactor, and a water collecting bottle is arranged to collect excessive moisture in gas in the reaction process, so that the accuracy of the measurement result is improved, the interference caused by wet environmental conditions such as steam is reduced, the whole system has good air tightness and is convenient to operate.

Furthermore, the system of the invention adopts a mode that the gas collecting pipe extends into the gas collecting bottle from the bottom of the gas collecting bottle, thus effectively improving the measurement accuracy of the reaction.

Furthermore, the radius of the reduced bottom end of the gas collecting bottle is set to be 1-2 times of the radius of the gas collecting pipe, so that the effect of draining and collecting gas can be better improved, and the high efficiency of the reaction process is ensured; meanwhile, one side of the gas collecting bottle is bonded with the inner wall of one corner of the water tank, so that the gas collecting bottle can be supported.

Furthermore, the system provided by the invention adopts the dust filter pipe, so that the phenomenon that subsequent gas collection analysis is influenced by aluminum powder brought out due to air exhaust can be effectively avoided, and the gas can be subjected to primary gas-liquid separation, so that the measurement accuracy of a subsequent system is effectively improved.

Furthermore, the system can conveniently control the extraction of gas in the system by arranging the gas collection knob switch and the air extraction knob switch, so that the operation is more efficient and reliable.

Furthermore, the system adopts a mode of arranging the buffer bottle, can avoid misoperation to enable liquid in the gas collecting bottle to be sucked into the air exhaust system, and is safe and reliable.

Furthermore, the system of the invention forms a reliable monitoring and recording process by connecting the thermocouple detection end with the sealed reactor, connecting the output end with the input end of the temperature control display, and connecting the output end of the temperature control display with the computer through the data acquisition instrument.

The method of the invention utilizes a sealed reactor arranged in a water bath and a gas collecting bottle arranged in a water tank, adopts a drainage and gas collecting mode to intensively collect reaction products of aluminum powder and water, inspects the change rule of the hydrogen production rate at different reaction stages, provides data support for the research of hydrogen production by aluminum water reaction, and achieves the purposes of improving the hydrogen production and the maximum hydrogen production rate; meanwhile, the test system can freely mix the composition of the metal aluminum powder mixed raw materials, add different additives into the sealed reactor, can study the combustion characteristics of the metal aluminum powder in different atmospheres, and provide data support for the experimental study of the combustion characteristics of aluminum water, such as the influence of the particle size of the aluminum powder, the combustion temperature, the molar ratio of the aluminum water to the combustion rate, the hydrogen production rate and the hydrogen production amount, and the study of the combustion research of the aluminum powder in different atmospheres by water.

Drawings

FIG. 1 is a schematic structural diagram of the testing system according to the embodiment of the present invention.

FIG. 2 is a schematic diagram showing the relationship between the radius of the gas collecting pipe and the radius of the reduced diameter bottom end of the gas collecting bottle in the present invention.

FIG. 3 is a schematic diagram showing the relationship between the cross-section of the gas collecting bottle and the cross-section of the water tank according to the present invention.

In the figure: 1-super thermostat, 2-water bath, 3-thermocouple, 4-temperature control display, 5-data acquisition instrument, 6-computer, 7-aluminum water reaction liquid, 8-additive, 9-sealed reactor, 10-air exhaust needle tube, 11-air exhaust tube, 12-dust filter tube, 13-water collecting bottle, 14-condensing device, 15-air collecting knob switch, 16-air collecting tube, 17-air collecting bottle reducing diameter, 18-air collecting bottle 0 scale mark, 19-water tank, 20-air collecting bottle, 21-air exhaust knob switch, 22-buffer bottle, 23-air exhaust pump, 24-air exhaust tube, A-water tank cross section and B-air collecting bottle cross section.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

The invention relates to a test system for producing hydrogen by a metal aluminum-water reaction, which is composed of a constant-temperature reaction system, a gas collection system and an air extraction system as shown in figure 1;

the constant temperature system comprises a super thermostat 1, a water bath 2, a sealed reactor 9, an air exhaust needle tube 10, a measurement recording device and the like, and is mainly used for controlling the reaction temperature in the sealed reactor 9;

a water inlet pipe of the water bath kettle 2 is connected with the super thermostat 1, and a sealed reactor 9 is arranged inside the super thermostat;

the sealed reactor 9 is in a vertical cylindrical shape, the bottom of the sealed reactor is arranged in the water bath 2, the top of the sealed reactor 9 is provided with a top cover, the top cover is provided with a sealing rubber mat, the center of the rubber mat is provided with a small hole for inserting the air exhaust needle tube 10, and the top cover and the cylinder of the sealed reactor 9 are tightly screwed in place in a threaded manner;

the gas after reaction is pumped out by the air pumping needle tube 10 and is sent to a gas collection system through the exhaust pipe 11;

the measuring and recording device consists of a thermocouple 3, a temperature control display 4, a data acquisition instrument 5 and a computer 6; the detection end of the thermocouple 3 is connected with the sealed reactor 9, and the output end of the thermocouple is connected with the input end of the temperature control display 4; the output end of the temperature control display 4 is connected with a computer 6 through a data acquisition instrument 5.

The gas collection system comprises a dust filtering pipe 12, a water collecting bottle 13, a condensing device 14, a gas collection knob switch 15, a water tank 19, a gas collecting bottle 20, a gas collecting bottle reducing 17, an exhaust pipe 24 and the like;

further, the dust filter 12 is composed of a vertical tube filled with filler, such as quartz sand or quartz cotton with a certain mesh number, so as to avoid the influence of aluminum powder on subsequent gas collection analysis due to air exhaust; the dust filter pipe 12 preliminarily divides the gas into a light component and a heavy component, and the heavy component is collected by the water collecting bottle 13 and further processed; the light fraction is fed to a condensing unit 14;

further, the condensing device 14 is composed of a plurality of stages of condensing pipes, and further separates out condensed substances, such as water, in the extracted gas, and sends the separated substances into the water collecting bottle 13; the gas after condensation treatment is sent into a gas collecting bottle 20;

further, the gas collecting bottle 20 is a vertical circular tube with scales, the scale is increased from the top end to the bottom end by 0, the top end of the gas collecting bottle 20 is arranged in a sealing manner, only one exhaust tube 24 is connected as a gas outlet, and the bottom end of the gas collecting bottle is provided with a gas collecting bottle reducing hole 17 with an opening; as shown in fig. 2, the radius of the bottom end of the reduced diameter 17 of the gas collecting bottle is about 1-2 times of the radius of the gas collecting pipe 16, and is not suitable to be too large; one side of the gas collecting bottle diameter-reducing 17 of the gas collecting bottle 20 is bonded with one corner inner wall of the oval water tank 19 to play a role in supporting the gas collecting bottle 20, and as shown in fig. 3, the position relation between the section B of the gas collecting bottle and the section A of the water tank is shown; the inlet end of the gas collecting pipe 16 is communicated with the gas outlet of the condensing device 14, and the outlet end is higher than the water tank 19 and is positioned below the scale mark 18 of the gas collecting bottle 0.

The air extraction system comprises an air extraction pump 23, a buffer bottle 22, an air extraction knob switch 21, an air extraction pipe 24 and the like;

further, the air pump 23 adopts a miniature air extracting device, which is communicated with the buffer bottle 22 through an air extracting pipe 24, the air extracting pipe 24 is provided with an air extracting knob switch 21, and the liquid in the air collecting bottle 20 is lifted to 0 scale mark mainly through pressure;

further, the arrangement of the buffer bottle 22 can avoid the liquid in the gas collecting bottle 20 from being sucked into the air pumping system due to misoperation.

In practical application, the working principle or procedure of the invention is used as follows, as shown in fig. 1, the system is firstly connected, and the air tightness of the system is checked;

the super thermostat 1 provides heat for the water bath 2, deionized water is placed in the sealed reactor 9, a thermocouple 3 arranged in the sealed reactor 9 sends the reaction temperature to a computer 6 from a data acquisition instrument 5 in real time, and the data of the temperature control display 4 is recorded in real time;

when the temperature reaches a set temperature and is constant, pouring the additive 8 and aluminum powder into a sealed reactor 9 to form an aluminum water reaction solution 7, and carrying out a metal aluminum-water combustion reaction; after being pumped out by the air pumping needle tube 10, the reacted gas passes through the exhaust tube 11 to the dust filtering tube 12, and redundant solid phase and liquid phase are filtered; the liquid produced after filtration is collected by the water collecting bottle 13, the produced lighter gas phase component is condensed by the condensing device 14, and the condensed substance is further sent to the water collecting bottle 13;

the condensed light gas phase components pass through a gas collection knob switch 15 and are sent into a gas collection bottle 20 with scales through a gas collection pipe 16; the air extraction knob switch 21 is turned on, the liquid level in the gas collection bottle 20 is lifted to the position of the scale mark 18 of the gas collection bottle 0 through the buffer bottle 22 by the miniature air extraction pump 23, the gas entering from the reducing position 17 of the gas collection bottle is used for recording the hydrogen production amount and the hydrogen production rate in a gas collection drainage mode, and the water in the water tank 19 is kept enough in the test process.

The following test parameters are used in this example to illustrate in detail the hydrogen production of the aluminum-water reaction using the system of the present invention for drainage,

step 1: preparing aluminum powder or additives with different experimental particle sizes according to the proportion, for example, adopting aluminum powder and sodium carbonate additives with the average particle size of 100nm, respectively metering and recording, and preparing mixed sample powder for later use after uniformly mixing;

step 2: a volume of deionized water, such as 100ml, is charged into the sealed reactor 9; checking whether the suction needle tube 10 is inserted in place and whether the connection of the whole system is tight;

and step 3: setting a certain temperature in the constant-temperature water bath 2, and recording the reaction temperature by the temperature control display 4, wherein the set temperature range is 60-80 ℃; a thermocouple 3 arranged in a sealed reactor 9 sends the reaction temperature to a computer 6 in real time through a data acquisition instrument 5, and records the reaction temperature in real time;

and 4, step 4: after the temperature of the reactor reaches a set value and is constant, pouring the standby mixed sample powder into the sealed reactor 9, such as 200mg of sample powder, and immediately screwing the top cover of the sealed reactor 9;

and 5: the mixed sample powder and water are subjected to corrosion reaction under the action of the additive, and the generated hydrogen is pumped out of the sealed reactor 9 by the air pumping needle tube 10, condensed by the dust filtering tube 12 and the condensing device 14 and then sent into the gas collecting bottle 20;

step 6: turning on the air extraction knob switch 21, operating the miniature air extraction pump 23 to lift the liquid level of the air collection bottle 20 to the position of the scale mark 18 of the air collection bottle 0, and turning off the air extraction knob switch 21;

and 7: turning on the gas collection knob switch 15, and simultaneously recording the gas collection time and the corresponding gas collection bottle 20 scales;

and 8: the gas of collecting is measured many times, notices hydrogen production rate and hydrogen production volume, and when not having gaseous output, the gas collecting bottle 20 scale is invariable promptly, can end the experiment.

It should be noted that, in the above-mentioned gas collection process, if the gas collection bottle 20 is abnormal, if the volume of the gas collection cannot be satisfied at this time, the micro air pump 23 can be used for many times to lift the liquid level to 0 scale, and the initial position of the liquid level is noted and recorded. Meanwhile, during the multiple draining of the water tank 19, attention is paid to maintain the liquid level of the water tank 19 at the upper edge position.

Based on any one of the systems, the invention also provides a test method for producing hydrogen by the metal aluminum-water reaction, which comprises the following steps,

placing deionized water into a sealed reactor 9, maintaining the constant temperature environment of the sealed reactor 9 by using a water bath 2, and recording reaction temperature data in the sealed reactor 9 in real time by using a measuring and recording device;

when the temperature reaches a set temperature and is constant, pouring mixed sample powder consisting of aluminum powder and an additive 8 into a sealed reactor 9 to form an aluminum water reaction solution 7 to carry out a metal aluminum-water combustion reaction; after the gas after reaction is pumped out by the air pumping needle tube 10, the heavier liquid component is collected by the water collecting bottle 13, and the lighter gas phase component is condensed by the condensing device 14;

the condensed liquid substance is sent into the water collecting bottle 13, the light gas phase component is sent into the gas collecting bottle 20 with scales through the gas collecting pipe 16, the liquid level in the gas collecting bottle 20 is lifted to the scale line 18 of the gas collecting bottle 0 through the air pump 23, the gas entering from the reducing part 17 of the gas collecting bottle is used for recording the hydrogen production amount and the hydrogen production rate in a gas collecting and water discharging mode;

the collected gas is measured for many times, and when no gas is produced, namely the scale of the gas collecting bottle 20 is constant, the test is finished.

Wherein the content of the first and second substances,

turning on the air extraction knob switch 21, operating the air extraction pump 23 to lift the liquid level of the air collection bottle 20 to the position of the scale mark 18 of the air collection bottle 0, and turning off the air extraction knob switch 21; turning on the gas collection knob switch 15, and simultaneously recording the gas collection time and the corresponding gas collection bottle 20 scales;

the gas pumped out from the sealed reactor 9 by the air pumping needle tube 10 is filtered to remove the redundant solid phase and liquid phase in the gas by the dust filtering tube 12, and the liquid generated after filtering is collected by the water collecting bottle 13;

the super-thermostat 1 keeps the temperature of the water bath 2 constant.