Multi-stage separation hydrogen production reaction system based on slurry hydrogen storage material and method of use

Abstract

The application discloses a kind of multistage separation hydrogen production reaction systems and use method based on slurry hydrogen storage material, the multistage separation hydrogen production reaction system includes reactor, and with the reactor connection purification module and feed module;The reactor is equipped with heating component, for providing reaction condition;The purification module includes with the reactor sequentially connected first membrane separator and several series hydrogen storage alloy separators;The feed module is used to transport slurry hydrogen storage material and water to the reactor, also for realizing the temperature rise and temperature drop of the hydrogen storage alloy separator.The membrane separation technology and hydrogen storage alloy selective hydrogen absorption are combined in the application, and the multi-stage collaborative purification process significantly improves the hydrogen purification efficiency and product purity, and the hydrogen purity is close to 100%.The working temperature interval of the system constructed in the hydrogen purification stage is 20-90 DEG C, which is significantly reduced compared with the high-temperature working condition of more than 300 DEG C in the traditional membrane separation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen production, in particular to a multi-stage separation hydrogen production reaction system based on slurry hydrogen storage material and a use method thereof. BACKGROUND

[0002] Hydrogen energy not only has high energy density, but also only generates water after combustion, as a clean and efficient secondary energy carrier, has broad application prospects in the field of new energy. In recent years, among many hydrogen production methods, slurry hydrogen storage material composed of nanocrystalline metal material and organic liquid has attracted widespread attention due to its mild reaction conditions, controllable hydrogen production rate, and wide range of raw material sources.

[0003] However, the high-temperature waste gas generated in the reaction process of the slurry hydrogen storage material carries a large amount of heat and is directly discharged, causing energy waste and reducing the overall energy efficiency of the system; secondly, in addition to hydrogen, the gas produced by the hydrolysis and hydrogen release reaction of the organic liquid also contains water vapor, CO, CO2, CH4 and other impurities. These impurities not only affect the performance and service life of downstream hydrogen energy application equipment (such as fuel cells), but also may cause corrosion of the system pipeline, increasing maintenance costs.

[0004] At present, conventional hydrogen purification technologies mainly include pressure swing adsorption (PSA), cryogenic separation and membrane separation methods. Activated carbon adsorption has good removal effect on heavy hydrocarbons and part of CO, and the equipment is simple and the operation cost is low, which is suitable as a primary gas purification unit; PSA technology has the advantages of large treatment capacity, stable operation, good adsorption selectivity, etc., and can effectively remove CO2 and other inorganic impurities, which is an important purification means for industrial hydrogen production; Palladium membrane separation has the characteristics of high selectivity and good product purity, and is particularly suitable for deep purification of hydrogen. However, in the face of multi-component mixed gas produced by hydrogen production reaction, a single purification technology often requires high operating pressure and high reaction temperature (usually higher than 200℃), and the purification effect is difficult to meet the quality requirements of high-purity hydrogen. It is of great practical significance to develop a high-efficiency multi-stage purification hydrogen production system. SUMMARY

[0005] The present application combines membrane separation technology and hydrogen storage alloy selective hydrogen absorption, and on the basis of fully utilizing the heat generated in the reaction process of slurry hydrogen storage material and realizing water circulation in the reaction process, hydrogen can be continuously produced and deeply purified.

[0006] In order to achieve the above purpose, the present application provides a multi-stage separation hydrogen production reaction system based on slurry hydrogen storage material, which comprises a reactor, and a purification module and a feeding module connected with the reactor.

[0007] The reactor is provided with a heating component for providing reaction conditions.

[0008] The purification module comprises a first membrane separator and a plurality of hydrogen storage alloy separators connected in series with the reactor;

[0009] The feeding module is used for feeding slurry hydrogen storage material and water into the reactor, and for heating and cooling the hydrogen storage alloy separators.

[0010] Further, the feeding module comprises a first water storage tank, a second water storage tank and a slurry tank.

[0011] The first water storage tank and the second water storage tank are connected with the reactor through the hydrogen storage alloy separators respectively.

[0012] The first water storage tank is used for feeding water into the reactor and feeding cooling water into the hydrogen storage alloy separators, and the second water storage tank is used for feeding hot water into the hydrogen storage alloy separators.

[0013] The slurry tank is connected with the reactor.

[0014] Further, a heat exchanger connected with the reactor is further comprised, which is used for recovering heat from waste material after the reaction of slurry hydrogen storage material and water.

[0015] The hydrogen storage alloy separators are internally provided with hydrogen storage alloy, and the hydrogen storage alloy comprises at least one of LaCe x Ni 5-x , LaNi5, Z r0.9 Ti 0.1 V2, LaNi 4.7 Al 0.3 .

[0016] The first water storage tank is connected with the hydrogen storage alloy separators and the reactor in sequence through a cooling water pipe.

[0017] The second water storage tank is connected with the hydrogen storage alloy separators and the heat exchanger in sequence through a hot water pipe, and the hot water pipe is further connected with the reactor.

[0018] Part of the cooling water pipe and the hot water pipe are wound on the hydrogen storage alloy inside the hydrogen storage alloy separators.

[0019] Further, the purification module further comprises a condenser, and the first membrane separator is connected with the reactor through the condenser.

[0020] Further, a buffer tank is further arranged between the condenser and the reactor.

[0021] Further, the hot water pipe is further connected with the condenser.

[0022] Further, the purification module further comprises a carrier gas tank and a second membrane separator.

[0023] The carrier gas tank and the second membrane separator are connected to the hydrogen storage alloy separators at the first end and the last end respectively.

[0024] Further, the heating component comprises an electric heater and a gas heater.

[0025] The hydrogen storage alloy separator at the last end is further connected to the gas heater, for providing the gas heater with other combustible gas generated by the reaction of the slurry hydrogen storage material and water, in addition to hydrogen.

[0026] The application further provides a method for using the multi-stage separation hydrogen production reaction system, comprising,

[0027] Turning on the heating component of the reactor, and using the feeding module to deliver the slurry hydrogen storage material and water to the reactor.

[0028] The slurry hydrogen storage material and water react inside the reactor, and the hydrogen is separated by the purification module.

[0029] Further, the working temperature of the purification module is 20-90℃.

[0030] In the application, the slurry hydrogen storage material is not strictly limited, and can be composed of nanocrystalline metal, organic liquid and catalyst. In mass percentage, the content of nanocrystalline metal, organic liquid and catalyst is 1-40wt.%, 50-95wt.% and 1-25wt.% respectively; the nanocrystalline metal can be at least one of Na, K, Mg and Al with an average particle size of 100-1000nm; the organic liquid is at least one of the full hydrogenation product of aromatic compound, the full hydrogenation product of heterocyclic compound and the full hydrogenation product of liquid organic polyhydric alcohol, the full hydrogenation product of aromatic compound is at least one of cyclohexane, methylcyclohexane, dimethylcyclohexane, decane and decahydronaphthalene, etc.; the full hydrogenation product of heterocyclic compound is at least one of full hydrogenation N-ethylcarbazole, full hydrogenation N-propylcarbazole, full hydrogenation N-methylindole, full hydrogenation N-ethylindole, full hydrogenation quinoline, etc.; the full hydrogenation product of liquid organic polyhydric alcohol is at least one of methanol, ethanol and isopropanol, etc. The catalyst can be at least one of Pd-based and Pt-based catalysts.

[0031] Compared with the prior art, the application has the following beneficial effects:

[0032] The application combines the membrane separation technology and the selective hydrogen absorption of hydrogen storage alloy, the first membrane separator realizes the preliminary enrichment of hydrogen, and the several hydrogen storage alloy separators in series ensure the deep purification effect, and the multi-stage cooperative purification process significantly improves the purification efficiency and product purity of hydrogen, and the purity of hydrogen is close to 100%.

[0033] The working temperature interval of the system constructed by the application in the hydrogen purification stage is 20-90℃, which is significantly reduced compared with the high temperature working condition of 300℃ or above in the traditional membrane separation process. The mild operating conditions not only greatly reduce energy consumption and improve the overall energy efficiency of the system, but also reduce the performance requirements of the equipment materials, effectively saving the operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0035] Figure 1 The structure schematic diagram of the multi-stage separation hydrogen production reaction system based on slurry hydrogen storage material is shown;

[0036] Figure 2 The structure schematic diagram of the partial pipe sections of the cooling water pipe and the hot water pipe and the hydrogen storage alloy is shown;

[0037] Explanation of reference signs:

[0038] 1, reactor; 2, buffer tank; 3, condenser; 4, first membrane separator; 5, first hydrogen storage alloy separator; 6, second hydrogen storage alloy separator; 7, second membrane separator; 8, carrier gas tank; 9, first water storage tank; 10, second water storage tank; 11, slurry tank; 12, heat exchanger. DETAILED DESCRIPTION

[0039] In the description of the present application, it should be understood that the terms "first", "second" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0040] In the description of the present application, it should be noted that, unless otherwise specifically specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example

[0043] like Figure 1 As shown, a multi-stage separation hydrogen production reaction system based on slurry-state hydrogen storage and production materials includes a reactor 1, and a feed module, a purification module, and a heat exchanger 12 connected to the reactor 1. The reactor 1 is equipped with heating components that can precisely control the temperature, including an electric heater and a gas heater. The purification module includes a buffer tank 2, a condenser 3, a first membrane separator 4, a first hydrogen storage alloy separator 5, a second hydrogen storage alloy separator 6, and a second membrane separator 7, which are sequentially connected to the reactor 1 via gas supply pipes. The condenser 3 is also connected to the reactor 1. The first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 are internally equipped with hydrogen storage alloys. The first hydrogen storage alloy separator 5 is also connected to a carrier gas tank 8. The carrier gas tank 8 is also connected to the second membrane separator 7. The feeding module is used to supply slurry hydrogen storage material and water to the reactor 1, and also to heat up and cool down the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6. The feeding module includes a first water tank 9, a second water tank 10 and a slurry tank 11. The first water tank 9 is connected to the first hydrogen storage alloy separator 5 and the reactor 1 in sequence through a cooling water pipe. The second water tank 10 is connected to the second hydrogen storage alloy separator 6 and the heat exchanger 12 in sequence through a hot water pipe. The hot water pipe is also connected to the reactor 1. The slurry tank 11 is connected to the reactor 1.

[0044] like Figure 2 As shown, sections of the cooling water pipe and hot water pipe are wound around the hydrogen storage alloy inside the hydrogen storage alloy separator. The hydrogen storage alloy is cooled and heated by the input of cooling water and hot water. The hydrogen storage alloy separator also integrates precise temperature detection components and adsorption capacity detection components to ensure the accuracy of the hydrogen adsorption and desorption temperatures of the hydrogen storage alloy.

[0045] In this embodiment, the second membrane separator 7 is also connected to the gas heater for providing the gas heater with other combustible gases generated by the reaction of the slurry hydrogen storage material and water, in addition to hydrogen. The system is provided with a complete temperature and pressure control mechanism. Electromagnetic valves are provided on the gas supply pipe, cooling water pipe and hot water pipe for flow regulation, the valve opening degree can be continuously adjustable within the range of 0-100%, and a pressure sensor is provided for real-time monitoring of the pipeline pressure, and the system operating pressure is controlled at 2 MPa. The first membrane separator 4 uses carbon molecular sieve membrane to separate hydrogen, and the second membrane separator uses hollow fiber membrane to separate nitrogen and hydrogen. The hydrogen storage alloy of the first hydrogen storage alloy separator 5 is LaCe x Ni 5-x The hydrogen storage alloy of the second hydrogen storage alloy separator 6 is LaNi5.

[0046] The first water storage tank 9 inputs cooling water, which is monitored in real time by a temperature sensor, and the flow is controlled by an electromagnetic valve to maintain the cooling water temperature at about 20°C, ensuring that the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 maintain a constant temperature during the hydrogen absorption process. When the system temperature fluctuates, the control system will automatically adjust the cooling water flow to maintain a stable temperature, and a flow meter is provided for real-time monitoring.

[0047] The second water storage tank 10 inputs hot water, which is controlled by a PID control algorithm to accurately control the hot water temperature within the range of 90±2°C. The system is provided with a temperature overrun alarm function, which triggers an alarm and starts the protection mechanism when the temperature exceeds 92°C. The second water storage tank 10 is used to promote the release of hydrogen from the hydrogen storage alloy, so the accuracy of temperature control directly affects the hydrogen release efficiency.

[0048] The first hydrogen storage alloy separator 5 uses LaCe x Ni 5-x The internal hydrogen storage alloy of the second hydrogen storage alloy separator 6 uses LaNi5. Hydrogen absorption is carried out at 20 bar pressure and room temperature (20°C), at which time cooling water is introduced to maintain a stable temperature; when hydrogen needs to be released, 90°C hot water is introduced to quickly raise the alloy temperature and promote hydrogen release. The first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 are each provided with an independent temperature sensor, pressure sensor and control circuit to ensure accurate control of operating parameters. The pressure sensor monitors the pressure change during hydrogen absorption and release in real time to ensure that the system always operates within a safe pressure range.

[0049] In this embodiment, the slurry hydrogen production material is a mixture of 50wt.% N-propyl carbazole, 40wt.% 100nm Al powder and 10wt.% Pd-based catalyst, and the preparation method of the slurry hydrogen production material can refer to the published patent CN118495469A, which does not involve the improvement points of the present application, and the present application does not make improvements.

[0050] The working method and principle of the multi-stage separation hydrogen production reaction system of the present embodiment are described in detail as follows:

[0051] Initial stage system configuration: Before the system runs, necessary process condition presetting and parameter initialization are required. First, ensure that the raw materials in the storage tank are sufficient, the liquid level and temperature of the first water storage tank 9 and the second water storage tank 10 are within the set range, and the pressure of the carrier gas tank 8 reaches the working requirement. At the same time, check the initial state of the hydrogen storage alloy inside the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 to ensure that they have sufficient hydrogen absorption capacity. The control system presets the process parameters, including the control range of key indicators such as reaction temperature, pressure, flow rate, etc.

[0052] Hydrogen absorption mode operation process: The raw materials are continuously transported from the slurry hydrogen production material to the heating area of the reactor 1 according to the preset flow rate. The reactor 1 adopts a composite heating method of electric heating and backflow gas combustion, and the reaction area is maintained in the optimal temperature range of 100-200℃ through the accurate temperature control system. At the same time, the cooling water from the first water storage tank 9 enters the top of the reactor 1, realizing dynamic regulation of the reaction temperature. During the reaction process, the nanometer metal microcrystal hydrolysis and the organic liquid dehydrogenation reaction proceed synchronously, and the generated gas mixture first enters the buffer tank 2. The buffer tank 2 effectively eliminates the fluctuations of gas flow and pressure, providing stable gas source conditions for the subsequent separation process. The gas then enters the condenser 3, where gas-liquid separation occurs. The separated water vapor condenses and flows back to the reactor 1, ensuring the effect of reaction temperature regulation and improving the utilization efficiency of water resources. The cooled gas enters the first membrane separator 4 for preliminary separation. Under the action of the carbon molecular sieve membrane, hydrogen gas preferentially permeates and enriches. The enriched hydrogen gas enters the first hydrogen storage alloy separator 5 to undergo a reversible absorption reaction with the hydrogen storage alloy at room temperature. The gas that is not completely absorbed by the first hydrogen storage alloy separator 5 enters the second hydrogen storage alloy separator 6 for deep purification to ensure the maximum capture of hydrogen gas. The series configuration of the two-stage metal hydride hydrogen storage device significantly improves the overall separation efficiency of the system. The unabsorbed combustible gas is returned to the gas heater to participate in the heating process.

[0053] Hydrogen release mode operation process: when the hydrogen storage alloy in the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6 is detected to reach the preset hydrogen saturation absorption amount, hot water is delivered from the second water storage tank 10 to the first hydrogen storage alloy separator 5 and the second hydrogen storage alloy separator 6. At the same time, the carrier gas tank 8 is opened to deliver to the first hydrogen storage alloy separator 5 as the carrier gas of the desorption process. In the temperature rising process, the hydrogen stored in the hydrogen storage alloy is gradually desorbed. The desorption rate is accurately controlled through the temperature change curve to ensure that the system pressure is always in a safe range. The carrier gas carries the desorbed hydrogen into the second membrane separator 7 for final purification. The purified high-purity hydrogen is output as a product, and the carrier gas is recycled to the carrier gas tank 8 for recycling. At the same time, the high-temperature water also enters the heat exchanger 12 to exchange heat with the waste material, and the generated water vapor is injected from the bottom of the reactor 1 to participate in the subsequent reaction process.

[0054] The present application combines membrane separation technology and selective hydrogen absorption of hydrogen storage alloy to realize multi-stage collaborative purification. First, the raw gas is concentrated by the membrane separator at room temperature, which can increase the hydrogen concentration from about 45% in the raw gas to about 70%. The carbon molecular sieve membrane is used in the membrane separation process, which significantly reduces the working temperature of 300-600℃ compared with the traditional palladium membrane, and has good mechanical strength and chemical stability. Second, the pre-enriched hydrogen enters the hydrogen storage alloy separator in series for deep purification. This multi-stage collaborative purification process significantly improves the purification efficiency and product purity of hydrogen, and can obtain 99.999% high-purity hydrogen, close to 100%. The hydrogen storage alloy selectively absorbs hydrogen at 20℃ and 20bar pressure, and the cooling water is supplied to maintain the constant temperature; when the hydrogen storage alloy is saturated, 90℃ hot water is supplied to release high-purity hydrogen. The working temperature of the system constructed by the present application in the hydrogen purification stage is 20-90℃, which is significantly lower than the high temperature working condition of 200℃ or more in the traditional membrane separation process. The mild operating conditions not only greatly reduce energy consumption and improve the overall energy efficiency of the system, but also reduce the performance requirements of the equipment materials, effectively saving the operating cost.

[0055] Comparative Example 1

[0056] The same slurry hydrogen storage material (50wt.% of N-propyl carbazole, 40wt.% of 100nm Al powder and 10wt.% of Pd-based catalyst) and reaction conditions (reaction temperature 100-200℃) as the present application are used to purify hydrogen using only carbon molecular sieve membrane. Although the carbon membrane can be separated at room temperature (20℃), the operating conditions are mild, but due to the limitation of single separation mechanism, the purity of the separated hydrogen is only 70%, and the separation efficiency is low, and the single-pass hydrogen recovery rate is about 65%.

[0057] Comparative Example 2

[0058] Under the same reaction system and process parameters, the palladium-based alloy membrane (Pd-Ag) was used for hydrogen purification. In order to ensure that the palladium membrane has sufficient hydrogen permeability, the operating temperature needs to be raised to 340℃, and the working pressure is maintained at 20bar. Although the hydrogen purity can reach 92%, high temperature operation and noble metal membrane significantly increase the energy consumption and cost of the system, and at the same time put forward higher requirements for the temperature resistance of the equipment material.

[0059] Comparative Example 3

[0060] Under the same slurry hydrogen production reaction conditions, only a single-stage LaNi5 hydrogen storage alloy was used for hydrogen purification. Hydrogen adsorption was carried out at 20℃ and 20bar pressure, and desorption was carried out at 90℃. Although the working temperature range is similar to that of the present application (20-90℃), the hydrogen purity can reach 90%, but the adsorption capacity of the single-stage hydrogen storage alloy is limited, and impurities are easily accumulated, which leads to a decrease in cycle performance, and regular regeneration is required, which increases the maintenance cost and operation complexity.

[0061] In contrast, the present application uses a "carbon membrane separation + two-stage hydrogen storage alloy" multi-stage cooperative purification process to obtain high-purity hydrogen (99.999%) under mild conditions (20-90℃), which has significant process advantages and economic benefits.

[0062] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

Claims

1. A multi-stage separation hydrogen production reaction system based on slurry hydrogen storage material, characterized in that, The reactor, a purification module connected with the reactor, and a feeding module connected with the reactor; The reactor is provided with a heating component for providing reaction conditions; The purification module comprises a first membrane separator and a plurality of hydrogen storage alloy separators connected in series; The feeding module is used for feeding slurry hydrogen storage material and water to the reactor, and for heating and cooling the hydrogen storage alloy separators; The feeding module comprises a first water storage tank, a second water storage tank, and a slurry tank; The first water storage tank and the second water storage tank are connected with the reactor through the hydrogen storage alloy separators respectively; The first water storage tank is used for feeding water to the reactor and feeding cooling water to the hydrogen storage alloy separators, and the second water storage tank is used for feeding hot water to the hydrogen storage alloy separators; The slurry tank is connected with the reactor.

2. The multi-stage separation hydrogen production reaction system of claim 1, wherein, A heat exchanger connected with the reactor is further included, which is used for recovering heat of waste material after reaction of slurry hydrogen storage material and water; The hydrogen storage alloy separator is internally provided with a hydrogen storage alloy, which comprises LaCe x Ni 5-x , LaNi5, Zr 0.9 Ti 0.1 V2, LaNi 4.7 Al 0.3 , at least one of them; The first water storage tank is connected with the hydrogen storage alloy separators and the reactor in sequence through a cooling water pipe; The second water storage tank is connected with the hydrogen storage alloy separators and the heat exchanger in sequence through a hot water pipe, and the hot water pipe is also connected with the reactor; Part of the cooling water pipe and the hot water pipe are wound on the hydrogen storage alloy inside the hydrogen storage alloy separator.

3. The multi-stage separation hydrogen production reaction system of claim 2, wherein, The purification module further comprises a condenser, and the first membrane separator is connected with the reactor through the condenser.

4. The multi-stage separation hydrogen production reaction system of claim 3, wherein, A buffer tank is further arranged between the condenser and the reactor.

5. The multi-stage separation hydrogen production reaction system of claim 3, wherein, The hot water pipe is also connected with the condenser.

6. The multi-stage separation hydrogen production reaction system of claim 1, wherein, The purification module further comprises a carrier gas tank and a second membrane separator; The carrier gas tank and the second membrane separator are connected with the hydrogen storage alloy separators at the first end and the last end respectively.

7. The multi-stage separation hydrogen production reaction system according to any one of claims 1 to 6, characterized by, The heating component comprises an electric heater and a gas heater; The last hydrogen storage alloy separator is also connected with the gas heater, which is used for providing other combustible gases generated by reaction of slurry hydrogen storage material and water to the gas heater in addition to hydrogen.

8. A method of using a multi-stage separation hydrogen production reaction system as claimed in any one of claims 1 to 7, characterized by, The method comprises, Turning on the heating component of the reactor, and feeding slurry hydrogen storage material and water to the reactor by using the feeding module; Reacting slurry hydrogen storage material and water in the reactor, and separating hydrogen by using the purification module.

9. The method of use of claim 8, wherein, The working temperature of the purification module is 20-90℃.

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