97results about "Metal hydrides" patented technology

The invention relates to the technical field of hydrogen storage materials, and discloses a polymer-doped aluminum hydride hydrogen storage material and a preparation method thereof, comprising a composite hydrogen storage material, wherein the composite hydrogen storage material is composed of a light metal hydride and a polymer, wherein the light metal hydride comprises at least one of LiH, MgH2 or AlH3, and the polymer comprises at least one of PMMA, ABS or PVP, wherein the mass ratio of the light metal hydride to the polymer is 1:0.1-100, and the composite hydrogen storage material is composed of AlH3 and PMMA, and the composition expression of the composite hydrogen storage material is AlH 3 + x wt.%PMMA, where x represents the mass fraction of PMMA in the composite hydrogen storage material, and 1

The invention provides an anomaly analysis method and system applied to a diborane production control system, and the method comprises the steps: firstly obtaining a multi-source production data set which is generated in the operation of the diborane production control system and comprises data with timestamp marks, such as equipment states, raw material conveying and reaction parameters, and then constructing a production association knowledge graph; the method comprises the following steps: carrying out physical connection between production equipment or parameters corresponding to production nodes and between equipment or logic association between parameters corresponding to production edges, then carrying out graph feature extraction on a production association knowledge graph, calling a pre-training graph neural network model to carry out graph structure analysis, and generating an anomaly detection result containing different anomaly type detection confidence degrees; and determining an abnormal event type and distribution characteristic information in the knowledge graph according to an anomaly detection result, and finally generating a production early warning instruction containing an event positioning identifier and sending the production early warning instruction to the production control terminal to trigger an anomaly response operation, thereby comprehensively and accurately analyzing the anomaly in diborane production, and improving the production safety and stability.

The invention discloses a synthesis and purification method of electronic-grade diborane, and relates to the technical field of diborane synthesis, and the synthesis and purification method has the advantages that cation 1-ethyl-3-methylimidazole in ionic liquid has a relatively large volume and a specific spatial configuration; the ionic liquid can be close to reactants sodium borohydride and hydrogen through intermolecular force, meanwhile, the anion bis (trifluoromethanesulfonyl) imide salt has high polarity and can attract reactant molecules with opposite charges, so that the ionic liquid makes full contact with the reactants, sulfolane has high dissolving capacity and can well dissolve sodium borohydride and hydrogen, and the ionic liquid can be separated from the reactants. Sodium borohydride and hydrogen are uniformly distributed in a mixed solvent, the sodium borohydride and hydrogen are efficiently reacted at proper temperature and pressure to generate high-purity diborane under the synergistic effect of the sodium borohydride and the hydrogen, sufficient contact of reactants is ensured by timely stirring in the reaction process, the reaction efficiency and the diborane yield are greatly improved, and the yield of the diborane is increased. And favorable conditions are created for subsequent preparation of electronic-grade diborane.

The invention belongs to the technical field of chemical equipment, and mainly relates to an efficient and safe solid particle feeding system which comprises a control mechanism, a feeding mechanism and a metering mechanism connected with the feeding mechanism. The feeding mechanism comprises a feeding bin and a spiral feeder assembled on the feeding bin, the interior of the feeding bin is used for containing materials needing to be added, the materials fall into the spiral feeder, and the spiral feeder conveys the materials to move; the metering mechanism comprises a weighing unit and a metering bin assembled on the weighing unit, and the metering bin is connected with a spiral feeder; the control mechanism is electrically connected with the spiral feeder and the weighing unit. The control mechanism accurately controls the spiral feeder through feedback of the weighing unit, then the weight of materials entering the measuring bin is controlled, inaccuracy of manual feeding is avoided, compared with manual feeding, labor cost and operation risks are reduced, the feeding efficiency is improved, and then the product quality is improved.

The invention discloses a composite hydrogen storage material as well as a preparation method and application thereof, and belongs to the technical field of hydrogen storage materials and preparation thereof. The problems that an existing aluminum hydride composite hydrogen storage system is too much in additive dosage, poor in low-temperature kinetics and the like are solved. According to the invention, the rare earth nitride is used as an additive, the multivalent characteristic of the rare earth element is used as an active center, and the nitrogen element has an attraction effect on negative hydrogen, so that the dissociation and transmission of hydrogen are accelerated; the rare earth element can perform electron transmission with aluminum hydride by taking a nitrogen active site as a bridge, so that a synergistic effect between the rare earth element and the aluminum hydride is realized, the affinity of the rare earth element and a hydrogen element is enhanced through an electron donating effect of the nitrogen element, the dehydrogenation temperature of the aluminum hydride material is reduced, and meanwhile, the dehydrogenation kinetics of a low-temperature region of the aluminum hydride material is also improved. In addition, the preparation process of the composite hydrogen storage material is simple and mature, raw materials are cheap and easy to obtain, and large-scale industrial production is facilitated.

The invention relates to the field of battery electrode materials, and discloses an Al and LiH co-doped silicon negative electrode material and a preparation method and application thereof. The preparation method comprises the following steps: carrying out powder tabletting on Si and LiAlH4, carrying out vacuum heat treatment at 160-190 DEG C for 3-6 hours, and then carrying out vacuum heat treatment at 200-300 DEG C for 2-5 hours to obtain the Al and LiH co-doped silicon negative electrode material. According to the invention, co-doping of metal aluminum and lithium hydride is formed in the silicon negative electrode material through a specific method, so that the lithium ion battery can be endowed with higher initial coulombic efficiency and cycling stability.

To provide a method and an apparatus that enable rehydrogenation after hydrogen release of borohydride composed of (HB)n(n≥4) as a hydrogen storage material so that the borohydride can be used repeatedly and the rehydrogenation can be performed without using a heating process.SOLUTION: A method for using a hydrogen storage material includes a rehydrogenation step of placing a hydrogen desorbed boron given by hydrogen being desorbed from borohydride composed of (HB)n(n≥4) under pressurized hydrogen of 4 MPa or more, whereby hydrogen is recombined with the hydrogen desorbed boron to form the borohydride. The rehydrogenation can be carried out without using a heating process. An exemplary embodiment of the hydrogen storage material is a hydrogen storage material supported on a bendable resin carrier.SELECTED DRAWING: Figure 2

The invention belongs to the technical field of hydrogen-containing compound preparation, and particularly relates to an electrochemical regenerated solvated aluminum hydride as well as a preparation method and application thereof. According to the method, an AlH3 dehydrogenation product aluminum powder is converted into a functional electrode, and aluminum is hydrogenated again under electrochemical driving by regulating and controlling the solvation environment of an electrolysis system to regenerate AlH3. The invention not only breaks through the dilemma that AlH3 is difficult to directly hydrogenate under the limitation of traditional thermodynamics, but also constructs a reversible material system, and provides a new research normal form for the development of the next generation of high-energy-density and recyclable hydrogen storage technology.

The utility model discloses a hydrolysis device applied to sodium methoxide wastewater, which comprises a support, a reaction kettle arranged on the support, a feed port, a water inlet, an exhaust port and an oil discharge port sequentially arranged at the top of the reaction kettle, a discharge port arranged at the bottom of the reaction kettle, a guide rod vertically arranged in the reaction kettle, a sliding sleeve sleeved on the guide rod, and a lifting pipe arranged on the side surface of the sliding sleeve. The upper end of the lifting pipe is connected with one end of a telescopic hose, the other end of the telescopic hose is connected with an oil outlet formed in the top of the reaction kettle, a supporting plate is arranged on the side wall of the reaction kettle, a first motor is arranged on the supporting plate, and an output shaft of the first motor penetrates through the side wall of the reaction kettle and extends into the reaction kettle. One end of the pulling rope is connected with the winding drum, and the other end of the pulling rope is connected with the sliding sleeve. The device disclosed by the utility model is high in hydrolysis efficiency, and the hydrolyzed oil phase and water can be quickly separated, so that the efficient recycling of the sodium methoxide wastewater is realized.

Provided are methods of producing cobalt-based nanoparticles (CoxBy NPs) of a pre-selected diameter. The methods include reducing Co2+ ions with a sodium borohydride (NaBH4) solution having a selected ratio of tetrahydroxyborate (B(OH)4−) to tetrahydroborate (BH4−) based on the pre-selected diameter, where the ratio of B(OH)4− to BH4− is positively correlated with the pre-selected diameter. Also provided are methods of using the CoxBy NPs to produce hollow metal nanospheres (HMNs). Methods of producing CoxBy NP core / metal shell structures are also provided, such methods including combining in an anaerobic galvanic exchange reaction a deaerated solution including CoxBy NP scaffolds and a deaerated solution including a metal. Also provided are methods of producing HMNs from the CoxBy NP core / metal shell structures. Compositions and kits that find use in practicing the methods of the present disclosure and using HMNs produced in accordance with the methods of the present disclosure, are also provided.

The invention relates to the field of metal hydrogenation equipment, and discloses a heat energy management system which comprises a reaction heat management device arranged on a reactor, the reaction heat management device comprises upflow and a reaction heat exchanger, the reactor comprises an air inlet pipe and an air outlet pipe, and the upflow is continuously introduced from the air inlet pipe below the reactor; the gas is discharged from a gas outlet pipe above the reactor; and the reaction heat exchanger is fixed on the outer wall of the reactor and can perform heat management on the reactor. A reaction heat management device is formed by ascending airflow and a reaction heat exchanger, hydrogenation reaction is carried out in a vertically arranged reaction container, metal powder is suspended by the ascending airflow to carry out hydrogenation reaction, and heat energy released in the reaction process is taken away by heat convection of the ascending airflow and the reaction heat exchanger; according to the method, the metal powder is added, local high temperature is avoided, the hydrogenation reaction process is easier to control, the controllability of the hydrogenation reaction is improved, and possibility is provided for continuous hydrogenation of the metal powder.

The invention relates to the technical field of metal hydrogenation, and discloses a metal hydride preparation method, which comprises: S1, gas introduction: continuously introducing hydrogen gas with a pressure of 1-6 MPa and a temperature of 50-500 DEG C into a vertical reactor to form an upflow from bottom to top; and S2, hydrogenation: continuously feeding metal powder with the particle size of less than 2000 microns through a feeding pipe, carrying out hydrogenation reaction under the lifting of ascending airflow, discharging the product from an air outlet pipe along with the airflow, and starting a reaction heat exchanger to control the temperature and maintain the temperature required by the reaction. According to the method, metal powder is suspended and dispersed through ascending airflow, gas-solid contact is enhanced, and the reaction efficiency is improved; upflow has the functions of reaction and heat dissipation, reaction heat is timely guided out through convection, and caking or melting caused by local overheating is prevented; by combining temperature regulation and control of the reaction heat exchanger, dynamic heat balance is realized, the reaction stability is effectively guaranteed, the purity and granularity uniformity of the product are remarkably improved, and the method is suitable for continuous and high-quality metal hydride preparation.

A method and system for storing diborane is described by adsorbing diborane onto a microporous carbon adsorbent that contains slit pores between the graphite layers at intervals between the graphite layers that increase the activation energy required for diborane decomposition relative to the activation energy for decomposition of unadsorbed gaseous diborane.

The invention provides an intelligent power supply system for solid-liquid fuel composite hydrogen production and high and low temperature fuel cell coupling. Comprising an aluminum hydride fuel tank, a methanol steam reforming hydrogen production reactor, a high-temperature proton exchange membrane fuel cell stack and a low-temperature proton exchange membrane fuel cell stack, an outlet of the aluminum hydride fuel tank is connected with an inlet of the high-pressure hydrogen storage bottle through a pipeline; an outlet of the high-pressure hydrogen storage bottle is connected with an anode inlet of the low-temperature proton exchange membrane fuel cell stack through a pressure reducing valve; according to the double-hydrogen-source cooperative coupling mechanism, through reaction characteristic complementation and energy gradient utilization, the inherent limitation of a single hydrogen source in fuel cell application is effectively solved, the traditional system architecture of a single hydrogen source and a single type of fuel cell is broken through, two hydrogen production modes and two electric pile technologies are creatively and deeply fused, and the energy utilization rate of the fuel cell is improved. The comprehensive breakthrough of the system in efficiency, dynamic response, fuel adaptability and reliability is realized.

The present invention provides a production method and a germanium hydride preparation system for germanium hydride. The method of the present invention is used to prepare germanium hydride, which can improve the yield of germanium hydride and is suitable for large-scale industrial production of germanium hydride. The production method comprises the following steps: (1) grinding a first portion of ammonium halide in a first grinder and purging it with hot nitrogen, then adding the magnesium germanide into the first grinder, continuing grinding and mixing to obtain material A; grinding a second portion of ammonium halide in a second grinder and purging it with hot nitrogen to obtain material B; (2) adding the material B into a reactor and mixing it with the solvent, then adding the material A into the reactor, and reacting to obtain a crude germanium hydride product; (3) refining the crude germanium hydride product to obtain a germanium hydride product.

The application relates to an N, N-dimethylethylamine aluminum alkane deuterated complex, preparation, application and alpha'-AlD3, and belongs to the technical field of energy materials and chemical synthesis. An aluminum alkane deuterated amine complex is prepared by reacting LiAlD4 with N, N-dimethylethylamine. The method has mild conditions and high yield, the obtained complex is stably present in a high-concentration solution, can be used as an efficient deuterium gas storage medium and a low-temperature deposition precursor, and can be used for preparing alpha'-AlD3.

This invention discloses a two-dimensional hydrogen germanene nanosheet, its preparation method, and its applications. The two-dimensional hydrogen germanene nanosheet has an ultrathin layered structure, with covalently modified hydrogen atoms on its surface, a lateral dimension of 100–300 nm, and a thickness of 5–10 nm. When activated by a specific wavelength laser, the two-dimensional hydrogen germanene nanosheet can photoexcite and generate singlet oxygen to destroy bacterial biofilms and kill bacteria. Simultaneously, it consumes local oxygen to create a staged hypoxic microenvironment, thereby inhibiting excessive inflammatory responses. After the light exposure ends, as the local oxygen level naturally recovers, it can further enhance the infection clearance function of immune cells, achieving continuous clearance of residual infection. This invention, through staged dynamic regulation of oxygen partial pressure, synergistically integrates direct bactericidal and immune clearance processes, ensuring antibacterial strength while reducing the risk of tissue damage and infection recurrence. It is suitable for the safe and effective treatment of implant-related biofilm infections.

To provide a hydrogen generation fuel body capable of suppressing rapid generation of hydrogen with a simple configuration.SOLUTION: A hydrogen generation fuel body is housed in a hydrogen fuel storage chamber of a hydrogen generator and includes a hydrogen generating agent for generating hydrogen gas by reacting with a reaction solution. The hydrogen generation fuel body includes a hydrogen generating agent layer in which the hydrogen generating agent is layered, and a diffusion member which is alternately laminated with the hydrogen generating agent layer and permeates and diffuses the reaction solution.SELECTED DRAWING: Figure 1

The present invention provides a hydrogen storage and release material comprising a two-dimensional borohydride-containing sheet having a two-dimensional network including n(HxBy) (n≥4, 0.001≤x / y≤0.999), in which the molar ratio of boron to hydrogen is 1:0.999 to 1:0.001, as calculated by thermal desorption spectroscopy and mass measurement before and after temperature rise, wherein: in X-ray photoelectron spectroscopy, peaks derived from B1s of boron appears at 187.5±1.0 eV and 191.2±1.0 eV to 193±1.0 eV; and in an infrared spectroscopy, a peak derived from B-H expansion and contraction vibration appears at 2400cm-1 to 2600cm-1, and a peak derived from B-H-B expansion and contraction vibration appears at 1200 cm-1 to 1800 cm-1.

The invention discloses a precursor treatment method for preparing a boron nitride film, and belongs to the field of two-dimensional material preparation. The precursor treatment method for preparing the boron nitride film comprises the following steps: heating ammonia borane powder in a hydrogen atmosphere at 120-140 DEG C to obtain ammonia borane with a stalactite-shaped structure. By regulating and controlling the structure and release behavior of ammonia borane, stable supply of a growth source is achieved, generation of by-products is inhibited, the film quality is improved, and the method is suitable for large-scale integrated preparation of device-level two-dimensional materials.

The invention provides a method for preparing diborane. The method comprises the following steps: in an inert atmosphere, taking halogenated hydrocarbon as raw material gas, carrying out first-step reaction on the halogenated hydrocarbon and hydroboron dissolved in an ether solvent to generate an intermediate, and then dropwise adding organic acid, and carrying out second-step reaction on the organic acid and the obtained intermediate to generate diborane gas. The invention also provides a diborane preparation system used in the method. According to the method and the system, halogenated hydrocarbon, hydroboron and organic acid are used as raw materials, diborane is prepared through two-step reaction, gas-liquid reaction and liquid-liquid reaction are carried out step by step, gas-solid reaction is avoided, the reaction rate is high, and consumed time is short; meanwhile, the raw material halogenated hydrocarbon does not react with the ether solvent, the halogenated hydrocarbon and the ether solvent do not react to generate byproducts, impurities generated in the reaction process are hydrocarbon and hydrogen which are easy to separate, later-stage diborane purification is facilitated, separation and purification are simple, the cost is low, and the obtained diborane product is high in yield and purity.

The invention discloses a synthesis method of a borohydride anion B11H14 <->. According to the synthesis method, hydroboron and halogenated hydrocarbon are taken as raw materials and are fully pyrolyzed in an organic solvent to prepare precursor salt, the precursor salt and quaternary ammonium salt are subjected to an ion exchange reaction, so that inorganic hydroboron is converted into organic quaternary ammonium salt, and then a poor solvent is adopted to achieve the purpose of crystallization and purification. According to the method, B11H14-can be efficiently synthesized, the yield can reach 70% or above, and the purity of B11H14-can reach 99.5% or above after repeated crystallization. The method is suitable for preparing the quaternary ammonium salt compound corresponding to high-purity B11H14-on a hectogram scale.

The invention provides a stabilized aluminum hydride compound and a preparation method thereof, and belongs to the technical field of hydrogen storage materials. The stabilized aluminum hydride compound provided by the invention comprises the following components in parts by mass: 100 parts of aluminum hydride and a coating agent, the coating agent is prepared from 1-15 parts of polycyclic aromatic hydrocarbon with an electron-donating group and 30-100 parts of an alkaline solution. According to the invention, the polycyclic aromatic hydrocarbon of the electron-donating group is adopted to treat the aluminum hydride to prepare the stabilized aluminum hydride compound, so that the thermal stability of the aluminum hydride is improved. The stabilized aluminum hydride compound provided by the invention also has good stability under the condition of long-term storage, and provides powerful guarantee for long-term storage and transportation of aluminum hydride. The preparation method of the stabilized aluminum hydride compound is simple and easy for industrial production.

The method comprises the following steps: mixing germane raw material gas and an added first azeotrope in a mixing tower 1, feeding the mixture into an azeotropic tower 1, extracting an azeotropic component from the top of the azeotropic tower 1, extracting an azeotropic component from the side line of the azeotropic tower 1, feeding the azeotropic component into a mixing tower 2, mixing, feeding the azeotropic component into an azeotropic tower 2, and feeding the azeotropic component into an azeotropic tower 1; a second azeotrope is extracted from the top of an azeotropic tower 2, a second azeotropic component is extracted from the side line of the azeotropic tower 2 and enters a product tower, an electronic-grade 7N germane product is extracted from the top of the product tower, and a heavy component is extracted from the bottom of the product tower. The device comprises a mixing tower 1, an azeotropic tower 1, an azeotropic tower 1 condenser, an azeotropic tower 1 reboiler, a mixing tower 2, an azeotropic tower 2, an azeotropic tower 2 condenser, an azeotropic tower 2 reboiler, a product tower, a product tower condenser and a product tower reboiler. By adopting the special rectification purification method and device for the electronic grade 7N germane, the purity of the treated 7N germane product is greater than 99.99999%, the ethane content is less than 0.1 ppb, the ethylene content is less than 0.1 ppb, and the carbon dioxide content is less than 0.1 ppb.

The invention relates to the field of special gas preparation, and mainly relates to a preparation method of ethyl germane, which comprises the following steps: generating GeH3 free radicals from germane under the action of electric field ionization, and then generating Ge2H6 through coupling of the GeH3 free radicals. According to the method, germane is changed into GeH3 free radicals, an e-free radical and an H free radical through ionization, then the free radicals are coupled to enable 2GeH3 to generate Ge2H6, and meanwhile, 2H free radicals generate H2, so that ethyl germane is obtained. In the preparation method disclosed by the invention, the conversion rate of the ethyl germane is high and is obviously improved compared with the conversion rate of the ethyl germane in the prior art, and the ethyl germane is generated by utilizing germane, so that the problem that a large amount of germane is generated along with generation of the ethyl germane is solved.

The present invention relates to a tank arrangement (10) comprising a tank (1) for liquid hydrogen, a boil-off management system (2) including a catalyst (3), and a heater arranged on the hydrogen side after a first pressure relief valve (5) and thermally connected to the catalyst (3), wherein the first pressure relief valve (5) is configured to open when a predetermined first pressure is exceeded, the heater being configured as a passive metal hydride heater (4) including a metal hydride, and a second pressure relief valve (6) is arranged between the first pressure relief valve (5) and the catalyst (3), the second pressure relief valve (6) being configured to open when a predetermined second pressure higher than the first pressure is exceeded.

A method of treating an at least partially unconsumed hydrogen generator cartridge including water and a metal hydride includes treating the at least partially unconsumed hydrogen generator cartridge to form a treated hydrogen generator cartridge. When subjected to testing conditions the treated hydrogen generator cartridge produces no hydrogen gas or produces hydrogen gas at a lower rate than the at least partially unconsumed hydrogen generator cartridge subjected to the testing conditions. The testing conditions include heating at less than or equal to 300 °C, agitation, exposing the metal hydride to a protic solvent, or a combination thereof.

The present invention provides a method for preparing gaseous arsenide from metal arsenide, comprising the steps of: S1, mixing crude arsenic with a first reducing agent to obtain a mixed arsenic material; placing the mixed arsenic material at the hot end of a closed first vacuum environment for sublimation, collecting condensate at the cold end of the first vacuum environment to obtain elemental arsenic; mixing elemental arsenic with an active metal material to obtain an arsenic metal mixture; placing the arsenic metal mixture in a second vacuum environment for melting reaction to obtain metal arsenide; S2, mixing the metal arsenide with sulfuric acid in a third vacuum environment, and maintaining the temperature of sulfuric acid in the environment at 20-40°C, and obtaining gaseous arsenide through a gas production reaction. The present invention utilizes a triple vacuum environment to achieve the preparation of high-purity gaseous arsenide, and can efficiently achieve industrial production.

The invention relates to the technical field of hydrogen storage materials, in particular to a doped symbiotic LaH2.46-La2O3 ultra-fine grain low-temperature reversible hydrogen absorption and desorption magnesium-based composite hydrogen storage material as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing LaH < 2.46-La > powder; the LaH < 2.46-La > powder is subjected to ball milling under the air atmosphere, and symbiotic LaH < 2.46-La2O3 powder is prepared; the preparation method comprises the following steps: carrying out ball milling on the symbiotic LaH < 2.46 >-La2O3 powder, Mg powder and Ni powder in an argon atmosphere to prepare nano composite powder; hydrotreating the composite powder; carrying out dehydrogenation treatment on the hydrogenated composite powder; the composite powder hydrogenation step and the hydrogenated composite powder dehydrogenation step are sequentially and repeatedly circulated for multiple times, and the composite powder is obtained. According to the scheme, excellent dynamic performance and cycling stability are achieved, and the composite material can be used as a hydrogen storage medium, can be used as an active medium for storing and transporting hydrogen in a solid-state hydrogen storage device, has the characteristics of high hydrogen storage density, relatively low hydrogen absorption and desorption temperature, good hydrogen absorption and desorption cycling stability, high safety, environment friendliness, low cost and the like, and has wide application prospects. And the application is not limited to a solid hydrogen storage device and can also be used as a heat exchange medium of a heat pump.

The application discloses a diborane preparation synthetic device and a synthesis process thereof, which comprise a base, a vacuum pump and a preparation cylinder. The preparation cylinder is used for extracting air in the preparation cylinder by the vacuum pump before preparation. The bottom end of the preparation cylinder is communicated with a collecting box. The bottom of the collecting box is fixedly connected with the base. The top of the collecting box is fixedly connected with the vacuum pump. The outer surface of the collecting box is fixedly connected with a protection assembly. The top of the protection assembly is communicated with the preparation cylinder. The position, close to the protection assembly, of the preparation cylinder is fixedly connected with a sealing ring. The top of the preparation cylinder is fixedly connected with a quantitative assembly. The application relates to the technical field of diborane production. The diborane preparation synthetic device and the synthesis process thereof are used for filtering gas after purification in a purification cylinder, thereby improving the quality of the gas and avoiding the influence of too many impurities accumulated in the preparation cylinder on the service life of the device, so that the influence of water flow on the purification of the gas is avoided.