CN114832510A - Gas-liquid separator and water electrolysis hydrogen production system - Google Patents

Abstract

The invention discloses a gas-liquid separator and a water electrolysis hydrogen production system, which comprises a tank body, a gas-liquid separation part and a degassing part, wherein the tank body is provided with a crude gas inlet and a gas phase outlet which are sequentially arranged along the height direction; the gas-liquid separation part and the degassing part are arranged in the tank body and are positioned on a flowing path of the crude gas inlet and the gas phase outlet, the gas-liquid separation part is used for carrying out gas-liquid separation on the crude gas entering the tank body, and the degassing part is used for removing impurity gas in the crude gas. This vapour and liquid separator, when being applied to the corresponding system gas side of electrolytic water hydrogen production system, can carry out gas-liquid separation to the crude gas that gets into the jar internal through gas-liquid separation portion, simultaneously can desorption impurity gas in the crude gas through the degasification portion, make vapour and liquid separator integrated the gas-liquid separation and desorption impurity gas's in the crude gas dual function, reduced electrolytic water hydrogen production system's equipment quantity, the process flow of whole hydrogen production system has been shortened, consequently, the whole equipment cost and the installation space demand of electrolytic water hydrogen production system have been reduced.

Description

A gas-liquid separator and electrolysis water hydrogen production system

technical field

The invention relates to the technical field of gas-liquid separation, and more particularly, to a gas-liquid separator and an electrolysis water hydrogen production system.

Background technique

For the electrolytic water hydrogen production process, in the current technical solution, the gas-liquid separation and deoxygenation processes are completed by two sets of equipment designed completely independently, which are carried out in the gas-liquid separator and the deaerator respectively, and also need to be equipped with coolers and other equipment. The process flow of the entire hydrogen production system is long, and the number of equipment is large, and then the overall cost of the equipment is high and the installation space requirement is large.

To sum up, how to solve the problems of high overall equipment cost and large installation space requirements of the electrolyzed water hydrogen production system has become an urgent problem to be solved by those skilled in the art.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a gas-liquid separator and an electrolytic water hydrogen production system to solve the problems of high overall equipment cost and large installation space requirements of the electrolytic water hydrogen production system.

To achieve the above object, the present invention provides the following technical solutions:

A gas-liquid separator for installing to the corresponding gas production side of an electrolyzed water hydrogen production system, comprising:

The tank body has a crude gas inlet and a gas outlet arranged in sequence along the height direction;

The gas-liquid separation part and the degassing part are arranged in the tank and are located on the flow path of the crude gas inlet and the gas phase outlet;

Wherein, the gas-liquid separation part is used for gas-liquid separation of the crude gas entering the tank; the degassing part is used for removing impurity gas in the crude gas.

Optionally, the gas-liquid separation part includes a first gas-liquid separation member and a second gas-liquid separation member arranged in sequence from bottom to top, and the degassing part is located between the first gas-liquid separation member and the second gas-liquid separation member. between the two gas-liquid separation parts.

Optionally, the degassing part is a degassing catalyst loaded between the first gas-liquid separation member and the second gas-liquid separation member, wherein the degassing catalyst is used to interact with the impurity gas The reaction produces water.

Optionally, the outside of the tank body is further provided with a catalyst filling port and a catalyst discharge port;

Wherein, the catalyst filling port is arranged close to the lower surface of the second gas-liquid separation member, and the catalyst discharge port is arranged close to the upper surface of the first gas-liquid separation member.

Optionally, an inner cylinder body is arranged on the tank body, the bottom of the inner cylinder body is communicated with the cavity where the gas-liquid separation part is located, and the inner cylinder body and the inner wall of the tank body are formed with a surrounding area. a carrier cavity, the cylinder wall of the inner cylinder is provided with a ventilation port communicating with the carrier cavity, and the gas-phase outlet communicates with the carrier cavity;

Wherein, the degassing part is loaded in the carrier cavity.

Optionally, an electric heater is provided in the inner cylinder.

Optionally, the electric heater is equipped with a heating controller for adjusting the heating temperature of the electric heater.

Optionally, a support member is arranged in the carrier cavity, and the support member divides the carrier cavity into a catalyst loading cavity and an exhaust cavity distributed from top to bottom, and the degassing part is loaded on the carrier cavity. the degassing catalyst of the catalyst loading chamber, and the gas phase outlet communicates with the exhaust chamber.

Optionally, the outer side of the tank body is further provided with a catalyst filling port and a catalyst discharge port communicating with the catalyst loading chamber;

Wherein, the catalyst filling port is arranged near the top of the catalyst loading chamber, and the catalyst discharge port is arranged near the bottom of the catalyst loading chamber.

Optionally, a cooler is also arranged in the exhaust chamber, and the liquid discharge port communicated with the exhaust chamber is provided on the outer side of the tank body, and the liquid discharge port is communicated with the exhaust gas The bottom of the cavity is arranged, and the arrangement position of the gas phase outlet on the exhaust cavity is higher than the liquid outlet.

Optionally, the cooler is further equipped with a flow regulator for adjusting the cooling amount of the cooler.

Optionally, the tank section corresponding to the gas-liquid separation part and the tank section corresponding to the deoxygenation part are connected by an expansion joint.

Optionally, a thermal insulation layer is further provided on the outer side of the tank body.

Optionally, when the gas production side is the hydrogen production side, the crude gas is crude hydrogen, and the impurity gas is oxygen; when the gas production side is the oxygen production side, the crude gas is crude oxygen , the impurity gas is hydrogen.

Compared with the description of the background technology, the above-mentioned gas-liquid separator, which is used to be installed on the corresponding gas production side of the electrolyzed water hydrogen production system, includes a tank body, a gas-liquid separation part and a degassing part, wherein the tank body has a height along the height direction. The crude gas inlet and the gas-phase outlet are arranged in sequence; the gas-liquid separation part and the degassing part are all arranged in the tank and are located on the flow path of the crude gas inlet and the gas-phase outlet. The crude gas is subjected to gas-liquid separation, and the degassing part is used to remove the impurity gas in the crude gas. When the gas-liquid separator is applied to the corresponding gas production side of the electrolyzed water hydrogen production system, the gas-liquid separation part can separate the crude gas entering the tank from gas and liquid, and at the same time, the degassing part can remove the crude gas in the crude gas. The impurity gas makes the gas-liquid separator integrate the dual functions of gas-liquid separation and removal of impurity gas in the crude gas, reducing the number of equipment in the electrolysis water hydrogen production system and shortening the process flow of the entire hydrogen production system. The overall equipment cost and installation space requirements of the electrolyzed water hydrogen production system are discussed.

In addition, the present invention also provides an electrolysis water hydrogen production system, including a gas-liquid separator, and the gas-liquid separator is the gas-liquid separator described in any of the above solutions. Since the above-mentioned gas-liquid separator has the above-mentioned technical effects, the electrolysis water hydrogen production system having the above-mentioned gas-liquid separator should also have corresponding technical effects.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a first structural schematic diagram of a gas-liquid separator provided by an embodiment of the present invention;

Fig. 2 is the second structural schematic diagram of the gas-liquid separator provided by the embodiment of the present invention;

Fig. 3 is the third structural schematic diagram of the gas-liquid separator provided by the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the connection between the tank section corresponding to the gas-liquid separation part and the tank section corresponding to the deoxygenation part provided by an embodiment of the present invention through an expansion joint.

Among them, in Figure 1-Figure 4:

Tank body 1, crude gas inlet 11, gas phase outlet 12, liquid phase outlet 13, catalyst filling port 14, catalyst discharge port 15, elbow 16, liquid discharge port 17, insulation layer 18, outer cylinder 18a, insulation material 18b, temperature probe 19;

Gas-liquid separation part 2, first gas-liquid separation member 21, second gas-liquid separation member 22;

Degassing section 3;

Inner cylinder 4, electric heater 40, electric heating tube 40a, temperature detector 40b, vent 41;

carrier chamber 5, catalyst loading chamber 5a, exhaust chamber 5b, degassing catalyst 51, support member 52;

Cooler 6, coolant inlet 61, coolant outlet 62;

mounting bracket 7;

Expansion joint 8.

Detailed ways

The core of the present invention is to provide a gas-liquid separator and an electrolytic water hydrogen production system to solve the problems of high overall equipment cost and large installation space requirements of the electrolytic water hydrogen production system.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1-FIG. 4, wherein, FIG. 1 is a first structural schematic diagram of a gas-liquid separator provided by an embodiment of the present invention; FIG. 2 is a second structural schematic diagram of the gas-liquid separator provided by an embodiment of the present invention; FIG. 3 is a schematic diagram of the third structure of the gas-liquid separator provided by the embodiment of the present invention; FIG. 4 is the expansion between the tank section corresponding to the gas-liquid separation section and the tank section corresponding to the deoxygenation section provided by the embodiment of the present invention. Schematic diagram of the connection structure.

The embodiment of the present invention provides a gas-liquid separator, which is used to be installed on the corresponding gas production side of an electrolyzed water hydrogen production system, and includes a tank body 1, a gas-liquid separation part 2 and a degassing part 3, wherein the tank body 1 has The crude gas inlet 11 and the gas phase outlet 12 are arranged in sequence along the height direction (for example, referring to Fig. 1-Fig. 3, in a bottom-up arrangement; also refer to Fig. 4, in a top-down arrangement) ; The gas-liquid separation part 2 and the degassing part 3 are all arranged in the tank 1, and are located on the flow path of the crude gas inlet 11 and the gas-phase outlet 12; The crude gas is subjected to gas-liquid separation, and the degassing part 3 is used to remove the impurity gas in the crude gas.

When the gas-liquid separator is applied to the corresponding gas production side of the electrolyzed water hydrogen production system, the gas-liquid separation part 2 can separate the crude gas entering the tank 1 from gas to liquid, and at the same time, the degassing part 3 can remove the gas. The impurity gas in the crude gas makes the gas-liquid separator integrate the dual functions of gas-liquid separation and removal of the impurity gas in the crude gas, which reduces the number of equipment in the electrolyzed water hydrogen production system and shortens the process flow of the entire hydrogen production system. , therefore, the overall equipment cost and installation space requirements of the electrolyzed water hydrogen production system are reduced.

It should be noted that those skilled in the art should be able to understand that for the gas-liquid separator, the bottom of the tank body 1 should generally be provided with a liquid phase outlet 13, so that the liquid phase after the gas-liquid separation can flow away. Flow into the electrolyzer or water collector of the electrolyzed water hydrogen production system. The specific structure of the gas-liquid separation part is not limited. Its working principle is to remove the trace moisture contained in the crude gas (crude hydrogen or crude hydrogen), and separate the gas-liquid two-phase gravity difference, so as to obtain low liquid content. amount of gas phase. For example, the gas-liquid separation part can specifically cool the crude gas through a cooling mechanism, and then condense trace moisture in the crude gas into liquid for removal; for another example, use a droplet capturing member, a wire mesh defoaming member, a deflector Plates and other components realize gas-liquid separation. In the actual application process, the layout can be selected according to actual needs.

In addition, it should be noted that the gas-liquid separator can be specifically applied to the hydrogen production side of the electrolysis water hydrogen production system, and can also be applied to the oxygen production side. Wherein, when the gas-liquid separator is applied to the hydrogen production side (that is, the aforementioned gas production side is the hydrogen production side), the crude gas is crude hydrogen, the impurity gas is oxygen, and the degassing operation at this time is deoxygenation; when the gas-liquid separation When the device is applied to the oxygen production side (that is, the aforementioned gas production side is the oxygen production side), the crude gas is crude oxygen, the impurity gas is hydrogen, and the degassing operation at this time is dehydrogenation. Among them, deoxygenation refers to the reaction of a small amount of oxygen in crude hydrogen under the action of a deoxygenation catalyst to generate water, so as to remove a small amount of oxygen contained in it; wherein dehydrogenation refers to the action of a small amount of hydrogen in crude oxygen on the dehydrogenation catalyst. The lower reaction generates moisture, so as to achieve the removal of a small amount of hydrogen contained in it.

In some specific embodiments, referring to the first structural schematic diagram of the gas-liquid separator provided in the embodiment of the present invention in FIG. 1 , the above-mentioned gas-liquid separation part 2 may specifically include first gas-liquid separation members arranged in sequence from bottom to top 21 and the second gas-liquid separation member 22 , and the degassing part 3 is located between the first gas-liquid separation member 21 and the second gas-liquid separation member 22 . The first structural form mainly relies on normal temperature to remove impurity gas. Specifically, the crude gas raw material enters the inside of the gas-liquid separator through the crude gas inlet 11, and then passes through the first gas-liquid separation member 21, the degassing part 3 and the first gas-liquid separation part 21 in turn. Two gas-liquid separation parts 22, so that the process of gas-liquid separation-removal of impurity gas-re-gas-liquid separation can be completed in sequence, so that the water generated when the crude gas is removed from the impurity gas can be further removed, so as to ensure that the The purity of the gas exiting the gas phase outlet 12 .

It should be noted that, the first gas-liquid separation part 21 and the second gas-liquid separation part 22 of the gas-liquid separation part 2 can specifically adopt the structure of a wire mesh demister, or can adopt other commonly used by those skilled in the art that can realize The structural form of gas-liquid separation is not more specifically limited here.

In a further embodiment, the degassing part 3 can be specifically designed as a degassing catalyst loaded between the first gas-liquid separation part 21 and the second gas-liquid separation part 22, wherein the degassing catalyst is used for reacting with impurity gas. To generate water, specifically, when the impurity gas is hydrogen, the degassing catalyst is a dehydrogenation catalyst, and when the impurity gas is oxygen, the degassing catalyst is a deoxygenation catalyst. Removing impurity gas by means of degassing catalyst can satisfy the requirement of high-efficiency removal of impurity gas, and the replacement and maintenance are more convenient, only need to replace the new degassing catalyst.

In a specific technical solution, in order to facilitate the replacement of the degassing catalyst, the outer side of the tank body 1 may also be provided with a catalyst filling port 14 and a catalyst discharge port 15; wherein, the catalyst filling port 14 is close to the second gas-liquid separation member 22 The lower surface of the catalyst discharge port 15 is arranged close to the upper surface of the first gas-liquid separation member 21 . The old degassing catalyst can be unloaded through the catalyst discharge port 15, and it is arranged close to the upper surface of the first gas-liquid separation member 21, which is conducive to unloading the old degassing catalyst cleanly; the catalyst filling port 14 can be filled with new ones. The degassing catalyst is arranged close to the lower surface of the second gas-liquid separation member 22 , which can conveniently fill the space between the first gas-liquid separation member 21 and the second gas-liquid separation member 22 .

Of course, it can be understood that the method of removing impurity gas by means of degassing catalyst is only an example of the embodiment of the present invention. In the actual application process, other degassing materials commonly used by those skilled in the art can also be used. make more specific restrictions.

In order for those skilled in the art to better understand the gas-liquid separator of the first structural form provided by the present invention, the following takes the application of the gas-liquid separator to the hydrogen production side of electrolyzed water as an example. The working process of the gas-liquid separator in the structural form is briefly explained:

The crude hydrogen raw material enters from the crude gas inlet 11, and is initially separated into gas-liquid two-phase in the bottom space of the tank 1 by means of gravity, the liquid phase enters the bottom of the tank 1, and flows out from the liquid phase outlet 13 of the tank 1, When the rising gas phase passes through the first gas-liquid separation member 21 (for example, a wire mesh demister), the gas and liquid are further separated, and the separated liquid phase enters the bottom of the tank 1 and flows out from the liquid phase outlet 13, and the gas phase continues. It rises to the degassing part 3 (that is, the deoxygenation catalyst), where a deoxygenation reaction occurs, and the gas-water mixture obtained after the reaction enters the second gas-liquid separation part 22 in the upper part, and the liquid phase is further separated. Outflow from the gas phase outlet 12 of the tank 1 , while the separated liquid phase flows down to the bottom of the tank 1 and flows out of the tank 1 from the liquid phase outlet 13 .

In some more specific embodiments, referring to the second structural schematic diagram of the gas-liquid separator provided by the embodiment of the present invention in FIG. 2 , the above-mentioned tank body 1 may be specifically provided with a vertically arranged inner cylinder 4 . 4. It is at least partially located inside the tank body 1 and above the gas-liquid separation part 2. A carrier cavity 5 is formed around the inner cylinder body 4 and the inner wall of the tank body 1. An electric heater 40 is arranged in the inner cylinder body 4. The bottom of the body 4 is communicated with the cavity where the gas-liquid separation part 2 is located, the cylinder wall of the inner cylinder 4 is provided with a vent 41 that communicates with the carrier cavity 5, and the gas phase outlet 12 is communicated with the carrier cavity 5; wherein, the degassing part 3 is loaded in the carrier cavity 5, and the degassing part 3 may specifically be a degassing catalyst 51 for reacting with impurity gas to generate water. The specific working process is as follows: the crude gas raw material enters the tank 1 through the crude gas inlet 11 , then passes through the gas-liquid separation part 2 , and then enters the carrier cavity 5 through the vent 41 on the inner cylinder 4 , and enters the carrier cavity 5 . The reaction with the degassing catalyst 51 completes the removal of impurity gas, and finally the purified gas is output from the gas phase outlet 12 . By designing the tank body 1 into the second structural form, the inner cylinder body 4 can make the arrangement positions of the gas-liquid separation part 2 and the degassing part 3 in the tank body 1 not interfere with each other and do not affect each other. The unloading and filling operations of the catalyst 51 are more convenient. And by arranging the electric heater 40, the working environment of the gas-liquid separator is a high temperature environment, that is, the temperature is above the dew point temperature of moisture under the working pressure. The electric heater 40 may specifically include an electric heating tube 40a and a temperature detector 40b (such as a thermocouple), and the electric heater 40 is used to heat the airflow flowing through the inner cylinder 4 .

In a further embodiment, the above-mentioned electric heater 40 may also be equipped with a heating controller, and the heating controller is used to adjust the heating temperature of the electric heater 40 . The specific adjustment method, for example, in the electrolysis water hydrogen production system, because the electrolysis water hydrogen production system has the characteristics of variable power/power fluctuation during the working process, it is easy to cause the problem of unstable gas production. Therefore, by configuring the heating controller, when the electrolyzed water hydrogen production system is in low power or low gas production (the specific value can be set according to the actual working conditions), the heating controller is used to reduce the heater temperature, so as to satisfy the deoxidation on the hydrogen production side. (dehydrogenation on the oxygen production side) demand; when the electrolyzed water hydrogen production system is at high power or the gas production is large (the specific value can be set according to the actual working conditions), the heating temperature of the electric heater is increased by the heating controller, thereby The deoxidation effect on the hydrogen production side or the dehydrogenation effect on the oxygen production side can be increased. It should be noted that, the above-mentioned heating controller can be specifically controlled manually by a user, or can be controlled automatically to a degree, which is not specifically limited here.

In a further embodiment, a support member 52 is arranged in the carrier cavity 5, and the support member 52 divides the carrier cavity 5 into a catalyst loading cavity 5a and an exhaust cavity 5b distributed from top to bottom. The degassed catalyst 51 of the catalyst loading chamber 5a and the gas phase outlet 12 communicate with the exhaust chamber 5b. The carrier chamber 5 is divided into the catalyst loading chamber 5a and the exhaust chamber 5b by disposing the support member 52, which makes the arrangement of the exhaust gas related devices more convenient, because there is no mutual interference between the exhaust chamber 5b and the catalyst loading chamber 5a. It should be noted that the support member 52 should have air permeability (eg, a support layer with a pore structure), so as to allow the pure gas removed from the impurity gas to enter the exhaust chamber 5b from the catalyst loading chamber 5a.

In addition, in order to facilitate the filling and unloading of the degassed catalyst in the catalyst loading chamber 5a, a catalyst loading port 14 and a catalyst discharge port 15 which are communicated with the catalyst loading chamber 5a may also be provided on the outside of the tank body 1; wherein, The catalyst filling port 14 is arranged near the top of the catalyst loading chamber 5a, and the catalyst discharging port 15 is arranged near the bottom of the catalyst loading chamber 5a. The old degassing catalyst can be unloaded through the catalyst discharge port 15, and it is arranged near the bottom of the catalyst loading chamber 5a, which is conducive to unloading the old degassing catalyst cleanly; the catalyst filling port 14 can be filled with new degassing catalyst. , and is arranged close to the top of the catalyst loading chamber 5a, which can easily fill the space of the catalyst loading chamber 5a.

In order for those skilled in the art to better understand the gas-liquid separator of the second structural form provided by the present invention, the application of the gas-liquid separator to the hydrogen production side of the electrolysis water hydrogen production system is taken as an example, and with reference to FIG. 2 Briefly describe the specific working process of the gas-liquid separator:

The specific separation and deoxygenation process is as follows: first, crude hydrogen enters the separation space at the lower end of the tank 1 from the crude gas inlet 11 of the tank 1, and the gas-liquid two phases are initially separated in the bottom space of the tank 1 due to the difference in gravity, and a trace amount is entrained. The gas of moisture is further separated in the gas-liquid separation part 2 (such as a wire mesh demister) to further separate the two phases of gas and water. 13 flows out of the tank 1, and the rising gas phase enters the bottom of the inner cylinder 4 of the electric heater 40. Under the heating of the electric heater 40, the temperature of the rising gas phase rises continuously, and the ventilation from the inner cylinder 4 The port 41 enters the catalyst loading chamber 5a, and the gas phase flows through the deoxygenation catalyst loaded in the catalyst loading chamber 5a from top to bottom.

In some specific embodiments, referring to FIG. 3 , a cooler 6 may also be provided in the above-mentioned exhaust chamber 5b, and a liquid discharge port 17 communicating with the exhaust chamber 5b is provided on the outer side of the tank body, and the liquid discharge port 17 communicates with each other. The gas phase outlet 12 is arranged at the bottom of the exhaust chamber 5b, and the arrangement position of the gas phase outlet 12 on the exhaust chamber 5b is higher than the liquid discharge port 17. By arranging the cooler 6 in the exhaust chamber 5b, the degassed gas-water mixture can be cooled by the cooler 6 so that the moisture in the gas phase is cooled and precipitated, and the precipitated moisture flows to the bottom of the exhaust chamber 5b due to the action of gravity, and finally It is discharged from the liquid discharge port 17, and by designing the cooler 6, the gas-liquid separator has a cooling function, and at the same time, the discharged gas is made more pure. It should be noted that, the cooler can specifically adopt a heat exchange structure in the form of coils, tubes, etc., so that the gas phase after degassing can be fully cooled, and the water in it can be analyzed and separated. Specifically, the cooler 6 generally has a cooling liquid inlet 61 and a cooler outlet 62 extending to the outside of the tank body 1 , and the arrangement of the cooling liquid inlet 61 and the cooler outlet 62 is preferably designed to be bottom-up. In this way, it is more conducive to sufficient heat exchange and cooling.

In a further embodiment, the above cooler 6 may also be equipped with a flow regulator, through which the cooling amount of the cooler 6 can be adjusted. Specifically, the flow rate of the cooler 6 can be adjusted according to the hydrogen production (oxygen production) power of the electrolyzed water hydrogen production system, thereby improving the cooling and gas-liquid separation effects. For example, when the electrolytic water hydrogen production system is at low power/low gas production (the specific value can be set according to actual needs), the cooling amount can be reduced through the flow regulator; when the electrolytic water hydrogen production system is at high power/high gas production ( When the specific value can be set according to the actual demand), the cooling capacity can be increased through the flow regulator.

Generally speaking, the degassing reaction (catalyst deoxygenation reaction or catalyst dehydrogenation reaction) in the degassing part 3 will generate high heat and the temperature is relatively high, while the working environment temperature of the gas-liquid separation part 2 is relatively low, so , in order to improve the stability of the entire tank and avoid the problem that hard connections may cause damage to the tank, referring to FIG. 1) and the tank section corresponding to the deoxidizer 3 (that is, the tank wall of the tank body 1 used to enclose the deoxidizer 3) can be connected by an expansion joint 8. Wherein, the crude gas inlet 11 and the gas phase outlet 12 may be arranged in a top-down manner, or may be arranged in a bottom-up manner, which is not specifically limited herein. By designing the expansion joint 8, the displacement of the tank section corresponding to the gas-liquid separation section 2 and the tank section corresponding to the deoxidizing section 3 due to thermal expansion and cold contraction can be absorbed, avoiding the problem that the tank body is easily damaged due to hard connection. stability of the entire tank.

It should be noted that when the tank body 1 has the inner cylinder body 4 arranged vertically, the inner cylinder body 4 is at least partially located inside the tank body 1 and above the gas-liquid separation part 2 , and the inner cylinder body 4 and the tank body 1 A carrier cavity 5 is formed around the inner wall, and a support member 52 is arranged in the carrier cavity 5. The support member 52 divides the carrier cavity 5 into a catalyst loading cavity 5a and an exhaust cavity 5b distributed from top to bottom. The degassing part 3 In order to load the degassing catalyst 51 in the catalyst loading chamber 5a, the gas phase outlet 12 is communicated with the exhaust chamber 5b, the exhaust chamber 5b may also be provided with a cooler 6, and the outer side of the tank body is provided with a connection with the exhaust chamber 5b. When the liquid discharge port 17 is connected to the bottom of the exhaust chamber 5b, and the arrangement position of the gas phase outlet 12 on the exhaust chamber 5b is higher than the liquid discharge port 17, the tank section corresponding to the above-mentioned exhaust chamber 5b (that is, the tank wall of the tank body 1 for enclosing the exhaust chamber 5b) and the tank section corresponding to the catalyst loading chamber 5a (that is, the tank wall of the tank body 1 for enclosing the catalyst loading chamber 5a) , and the inner cylinder section corresponding to the exhaust chamber 5b (that is, the cylinder wall used to enclose the inner cylinder 18a of the exhaust chamber 5b) and the inner cylinder section corresponding to the catalyst loading chamber 5a (that is, used to enclose the inner cylinder 18a) The cylinder walls of the inner cylinder body 18a of the catalyst loading chamber 5a are preferably connected by expansion joints. Because the temperature of the catalyst loading chamber 5a is relatively high when the degassing reaction (such as deoxygenation reaction) is performed, the temperature of the exhaust chamber 5b is relatively low due to the arrangement of the cooler 6 in the exhaust chamber 5b. The expansion joint is designed to absorb the displacement between the inner and outer cavity walls of the exhaust cavity 5b and the inner and outer cavity walls of the catalyst loading cavity 5a due to thermal expansion and contraction, avoiding the problem of easy damage to the tank caused by hard connection, and improving the overall Tank stability.

In addition, in order to prevent the gas in the external environment from entering the inside of the tank during the liquid discharge process of the liquid discharge port 17 , the bottom of the exhaust chamber 5b and the liquid discharge port 17 are connected through the elbow 16 .

In order for those skilled in the art to better understand the gas-liquid separator of the third structural form provided by the present invention, the following takes the installation of the gas-liquid separator on the hydrogen production side of the electrolyzed water hydrogen production system as an example. The specific working process of the gas-liquid separator is explained:

The crude hydrogen raw material enters the separation space at the lower end of the tank 1 from the crude gas inlet 11 of the tank. After the gas-liquid two phases are initially separated in the bottom space of the tank 1 due to the difference in gravity, the gas with a trace amount of moisture is separated in the gas-liquid separation section 2. (such as a wire mesh demister) to further separate the gas and water phases, all the separated liquid phases fall to the bottom of the tank 1 by gravity, and flow out of the tank 1 from the liquid phase outlet 13, and rise The gas phase enters the bottom of the inner cylinder 4 of the electric heater 40. Under the heating of the electric heater 40, the temperature of the rising gas phase rises continuously. When the predetermined temperature is reached, the high temperature gas is drawn from the gas phase outlet of the inner cylinder 4 41 leaves the catalyst loading chamber 5a that enters the carrier chamber 5, and the gas phase flows continuously through the deoxygenation catalyst in the catalyst loading chamber 5a from top to bottom, and a deoxygenation reaction occurs on the deoxygenation catalyst. The deoxidized gas-water mixture passes through the cooler 6 to cool and separate out the moisture in the gas phase, and the precipitated moisture enters the elbow 16 (such as a U-shaped bend) due to the action of gravity, and finally leaves the tank 1 through the water outlet 17, thereby realizing The deoxygenated gas and water are separated, and the cooled gas phase leaves the equipment from the gas phase outlet 12 .

In a further embodiment, as shown in FIG. 3 , in order to avoid heat loss of the electric heater 40 , the outer side of the tank body 1 may also be provided with a thermal insulation layer 18 . The specific structural form of the thermal insulation layer 18 may include an outer cylinder 18a sleeved on the outer side of the tank 1 , and the space between the outer cylinder 18a and the outer wall of the tank 1 is filled with thermal insulation material 18b. Wherein, the outer cylinder 18a may specifically be an iron drum wrapped on the outside of the tank 1, and a thermal insulation material 18b is filled therebetween to reduce the heat loss generated by the electric heater. It should be noted that when the tank section corresponding to the exhaust cavity 5b (that is, the tank wall of the tank body 1 used to enclose the exhaust cavity 5b) and the tank section corresponding to the catalyst loading cavity 5a (that is, the tank wall used to enclose the exhaust cavity 5b) between the tank wall of the tank body 1 forming the catalyst loading chamber 5a), and the inner cylinder section corresponding to the exhaust chamber 5b (that is, the cylinder wall used to enclose the inner cylinder body 18a of the exhaust chamber 5b) and the catalyst loading chamber When the inner cylinder sections corresponding to the cavity 5a (that is, the cylinder walls of the inner cylinder 18a used to enclose the catalyst loading cavity 5a) are connected by expansion joints, the relative positions of the corresponding insulation layers 18 should also have expansion joints. , to ensure the stable connection between the entire tank and the insulation layer.

In addition, when the electric heater 40 starts heating, in order to monitor the heating temperature of the gas and control the heating power of the electric heater, a temperature measuring probe 19 extending into the catalyst loading cavity 5a can be provided on the tank wall corresponding to the carrier cavity 5, And it is generally preferred to design two upper and lower, so that the gas temperature change can be detected more accurately. In the actual application process, a metal sleeve can be specifically set to facilitate the installation of the temperature measuring probe 19 .

In addition, the present invention also provides an electrolysis water hydrogen production system, including a gas-liquid separator, and the gas-liquid separator is the gas-liquid separator described in any of the above solutions. Since the above-mentioned gas-liquid separator has the above-mentioned technical effects, the electrolysis water hydrogen production system having the above-mentioned gas-liquid separator should also have corresponding technical effects.

It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, refer to each other Can.

It should be understood that if "system", "device", "unit" and/or "module" are used in this application, it is only one way to distinguish different components, elements, parts, parts or assemblies at different levels. However, other words may be replaced by other expressions if they serve the same purpose.

As shown in this application and in the claims, unless the context clearly dictates otherwise, the words "a", "an", "an" and/or "the" are not intended to be specific in the singular and may include the plural. Generally speaking, the terms "comprising" and "comprising" only imply that the clearly identified steps and elements are included, and these steps and elements do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. The inclusion of an element by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

Wherein, in the description of the embodiments of the present application, unless otherwise stated, “/” means or means, for example, A/B can mean A or B; “and/or” in this document is only a description of the associated object The association relationship of , indicates that there can be three kinds of relationships, for example, A and/or B, can indicate that A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" refers to two or more than two.

Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature.

If a flow chart is used in the present application, the flow chart is used to describe the operations performed by the system according to the embodiment of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order. Instead, the various steps can be processed in reverse order or simultaneously. At the same time, other actions can be added to these procedures, or a step or steps can be removed from these procedures.

The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (15)

1. A gas-liquid separator for mounting to a corresponding gas generation side of an electrolyzed water hydrogen generation system, comprising:

the tank body (1) is provided with a crude gas inlet (11) and a gas phase outlet (12) which are sequentially arranged along the height direction;

a gas-liquid separation section (2) and a degassing section (3) which are provided in the tank body (1) and are located on a flow path between the raw gas inlet (11) and the gas phase outlet (12);

the gas-liquid separation part (2) is used for carrying out gas-liquid separation on the crude gas entering the tank body (1); the degassing part (3) is used for removing impurity gases in the crude gas.

2. The gas-liquid separator according to claim 1, wherein the gas-liquid separation section (2) comprises a first gas-liquid separation member (21) and a second gas-liquid separation member (22) arranged in this order from bottom to top, and the degassing section (3) is located between the first gas-liquid separation member (21) and the second gas-liquid separation member (22).

3. The gas-liquid separator according to claim 2, wherein the degassing section (3) is a degassing catalyst loaded between the first gas-liquid separator (21) and the second gas-liquid separator (22).

4. The gas-liquid separator according to claim 3, wherein the tank (1) is further provided with a catalyst filling port (14) and a catalyst discharge port (15) on the outside;

wherein the catalyst charging port (14) is disposed near a lower surface of the second gas-liquid separating member (22), and the catalyst discharging port (15) is disposed near an upper surface of the first gas-liquid separating member (21).

5. The gas-liquid separator according to claim 1, wherein an inner cylinder (4) is provided on the tank (1), the bottom of the inner cylinder (4) is communicated with the cavity where the gas-liquid separation part (2) is located, a carrier cavity (5) is formed by the inner cylinder (4) and the inner wall of the tank (1), an air vent (41) communicated with the carrier cavity (5) is provided on the cylinder wall of the inner cylinder (4), and the gas phase outlet (12) is communicated with the carrier cavity (5);

wherein the degassing section (3) is loaded into the carrier chamber (5).

6. The gas-liquid separator according to claim 5, wherein an electric heater (40) is provided in the inner cylinder (4).

7. The gas-liquid separator according to claim 6, wherein the electric heater (40) is equipped with a heating controller for adjusting a heating temperature of the electric heater (40).

8. The gas-liquid separator according to claim 5, wherein a holder member (52) is provided in the carrier chamber (5), the holder member (52) partitions the carrier chamber (5) into a catalyst loading chamber (5a) and a gas discharge chamber (5b) which are arranged from top to bottom, the degassing section (3) is a degassing catalyst (51) loaded in the catalyst loading chamber (5a), and the gas phase outlet (12) communicates with the gas discharge chamber (5 b).

9. The gas-liquid separator according to claim 8, wherein the tank (1) is further provided at an outer side thereof with a catalyst charging port (14) and a catalyst discharging port (15) communicating with the catalyst loading chamber (5 a);

wherein the catalyst loading port (14) is disposed proximate to a top of the catalyst loading chamber (5a) and the catalyst discharge port (15) is disposed proximate to a bottom of the catalyst loading chamber (5 a).

10. The gas-liquid separator according to claim 8, wherein a cooler (6) is further provided in the gas discharge chamber (5b), and the outside of the tank body is provided with the drain port (17) communicating with the gas discharge chamber (5b), the drain port (17) is disposed in communication with the bottom of the gas discharge chamber (5b), and the gas phase outlet (12) is disposed higher than the drain port (17) on the gas discharge chamber (5 b).

11. The gas-liquid separator according to claim 10, wherein the cooler is further equipped with a flow regulator for regulating a cooling amount of the cooler.

12. The gas-liquid separator according to claim 1, wherein the tank section corresponding to the gas-liquid separation portion (2) and the tank section corresponding to the deoxygenation portion (3) are connected by an expansion joint (8).

13. The gas-liquid separator according to any one of claims 1-12, characterized in that the tank (1) is also provided with an insulating layer (18) on its outer side.

14. The gas-liquid separator of any one of claims 1-12, wherein when the gas generation side is a hydrogen generation side, the raw gas is raw hydrogen and the impurity gas is oxygen; when the gas production side is an oxygen production side, the crude gas is crude oxygen, and the impurity gas is hydrogen.

15. A water electrolysis hydrogen production system comprising a gas-liquid separator, wherein the gas-liquid separator is according to any one of claims 1 to 14.

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