阅读说明：本技术 一种六氟异丙醇的制备方法 (Preparation method of hexafluoroisopropanol ) 是由 何春雷 马宇辉 于 2021-09-01 设计创作，主要内容包括：本发明属于六氟异丙醇技术领域,具体涉及一种六氟异丙醇的制备方法,包括以下步骤：步骤一：将六氟丙酮水与六氟异丙醇成比例灌入温度搅拌设备内,在搅拌过程中稳定搅拌设备进行加热,加热温度为90℃-150℃；步骤二：在六氟丙酮水与六氟异丙醇混合完成后,向温度搅拌设备内添加催化剂,同时温度搅拌设备依然对内部进行加热,步骤三：向温度搅拌设备内通入氢气与氮气的混合气体,步骤四：对温度搅拌设备内进行泄压,内部气体经过过滤设备后排出,然后将温度搅拌设备内的液体混合物引入反应设备内进行反应,从而制成六氟异丙醇。(The invention belongs to the technical field of hexafluoroisopropanol, and particularly relates to a preparation method of hexafluoroisopropanol, which comprises the following steps: the method comprises the following steps: proportionally filling hexafluoroacetone water and hexafluoroisopropanol into a temperature stirring device, and stabilizing the stirring device to heat in the stirring process, wherein the heating temperature is 90-150 ℃; step two: after the hexafluoroacetone water and the hexafluoroisopropanol are mixed, adding a catalyst into the temperature stirring equipment, and simultaneously, still heating the interior of the temperature stirring equipment, wherein the third step is as follows: introducing mixed gas of hydrogen and nitrogen into the temperature stirring equipment, and performing step four: and (3) decompressing the inside of the temperature stirring equipment, discharging the internal gas after passing through the filtering equipment, and introducing the liquid mixture in the temperature stirring equipment into the reaction equipment for reaction so as to prepare hexafluoroisopropanol.)

1. A preparation method of hexafluoroisopropanol is characterized in that: the method comprises the following steps:

the method comprises the following steps: proportionally filling hexafluoroacetone water and hexafluoroisopropanol into a temperature stirring device, starting the temperature stirring device, stirring the mixture of the hexafluoroacetone water and the hexafluoroisopropanol for 10-25 min, stabilizing the stirring device in the stirring process, heating the mixture of the hexafluoroacetone water and the hexafluoroisopropanol, wherein the heating temperature is 90-150 ℃;

step two: after mixing of hexafluoroacetone water and hexafluoroisopropanol is finished, adding a catalyst into a temperature stirring device, and continuously stirring for 13-20 min by the mixing device until hexafluoroacetone water, hexafluoroisopropanol and the catalyst are completely mixed, and simultaneously, the temperature stirring device still heats the inside, and the temperature is kept at 120-170 ℃;

step three: introducing mixed gas of hydrogen and nitrogen into the temperature stirring equipment, wherein the ratio of the hydrogen to the nitrogen is 3:1, fully mixing the mixed gas with the mixture in the temperature stirring equipment, continuously introducing the mixed gas into the temperature stirring equipment for 20-42 min, and enabling the pressure treatment in the temperature stirring equipment to be always between 6-11 MPa;

step four: and (3) decompressing the inside of the temperature stirring equipment, discharging the internal gas after passing through the filtering equipment, and introducing the liquid mixture in the temperature stirring equipment into the reaction equipment for reaction so as to prepare hexafluoroisopropanol.

2. The process according to claim 1, wherein said process comprises the steps of: the reaction time is 30-53 min, and the reaction temperature is 135-165 ℃.

3. The process according to claim 1, wherein said process comprises the steps of: the catalyst comprises a catalytic metal.

4. The process according to claim 1, wherein said process comprises the steps of: and part of the final product hexafluoroisopropanol is used for being put into the step I, so that normal production work is ensured.

5. The process according to claim 1, wherein said process comprises the steps of: the temperature stirring equipment comprises a heating cylinder, wherein a pressure relief mechanism is assembled on the upper side of the heating cylinder, a feed inlet is assembled on the upper side of the heating cylinder, a sealing cover is assembled on the feed inlet, a discharge pipe is arranged on the lower side of the heating cylinder, a control valve is assembled on the discharge pipe, a motor is assembled on the upper side of the heating cylinder, the motor drives a rotating shaft extending into the heating cylinder, a first thread section and a second thread section are respectively arranged on the upper side and the lower side of the rotating shaft, the thread rotating directions of the first thread section and the second thread section are opposite, a water permeable plate is in threaded connection with each of the first thread section and the second thread section, four limiting mechanisms matched with the two water permeable plates are arranged in the heating cylinder, each limiting mechanism comprises a fixed rod and two sliding blocks, the two sliding blocks are respectively rotatably assembled with the two water permeable plates, and a spiral slide rail is arranged on the surface of the fixed rod, two the sliding block all assembles with the spiral slide rail mutually, four one side of two sliding blocks of stop gear relative all is equipped with rabbling mechanism, the cartridge heater is equipped with air inlet mechanism.

6. The process according to claim 5, wherein said process comprises the steps of: the pressure relief mechanism comprises a pressure relief pipe connected with the heating cylinder, and the pressure relief pipe is provided with an on-off valve.

7. The process according to claim 5, wherein said process comprises the steps of: the stirring mechanism comprises a rotary disc, the rotary disc is fixedly connected with a sliding block, the rotary disc is sleeved on the outer surface of the fixed rod, and a plurality of stirring rods are arranged on one side, away from the permeable plate, of the rotary disc.

8. The process according to claim 5, wherein said process comprises the steps of: air inlet mechanism is including two gas holders, two the gas holder is located both sides inner wall about the cartridge heater respectively, two the relative one side of gas holder all is equipped with a plurality of shower nozzles, two a plurality of shower nozzle delivery port homogeneous phase lopsidedness of gas holder assembly, a plurality of shower nozzle slope opposite direction of upper and lower both sides, two connect between the gas holder and be equipped with the closed tube, the closed tube is equipped with the intake pipe.

9. The process according to claim 5, wherein said process comprises the steps of: and a limiting seat fixedly connected with the rotating shaft is arranged between the first thread section and the second thread section, and limiting blocks are arranged on the upper side and the lower side of the rotating shaft.

Technical Field

The invention belongs to the technical field of hexafluoroisopropanol, and particularly relates to a preparation method of hexafluoroisopropanol.

Background

Hexafluoroisopropanol (1, 1, 1, 3, 3, 3-hexafluoro-2-propanol) is used as an intermediate in pharmaceuticals and agrochemicals, as a solvent or cleaner in electronic devices, and in analytical applications due to its ability to dissolve a variety of polymers. HFIP exhibits strong hydrogen bonding and will bind and dissolve most molecules with an acceptance point such as oxygen, double bonds, or amine groups. Stable distillable complexes are formed with many ethers or amines due to strong hydrogen bonding. HFIP is soluble in water and most organic solvents. It is a volatile (boiling point 58.2 ℃) and polar substance with high density, low viscosity and low surface tension. The efficiency of the traditional preparation method of hexafluoroisopropanol is not high, and the preparation method needs to be improved.

Disclosure of Invention

The purpose of the invention is: aims to provide a preparation method of hexafluoroisopropanol, which is used for solving the problems in the background technology.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a preparation method of hexafluoroisopropanol comprises the following steps:

the method comprises the following steps: proportionally filling hexafluoroacetone water and hexafluoroisopropanol into a temperature stirring device, starting the temperature stirring device, stirring the mixture of the hexafluoroacetone water and the hexafluoroisopropanol for 10-25 min, stabilizing the stirring device in the stirring process, heating the mixture of the hexafluoroacetone water and the hexafluoroisopropanol, wherein the heating temperature is 90-150 ℃;

step two: after mixing of hexafluoroacetone water and hexafluoroisopropanol is finished, adding a catalyst into a temperature stirring device, and continuously stirring for 13-20 min by the mixing device until hexafluoroacetone water, hexafluoroisopropanol and the catalyst are completely mixed, and simultaneously, the temperature stirring device still heats the inside, and the temperature is kept at 120-170 ℃;

step three: introducing mixed gas of hydrogen and nitrogen into the temperature stirring equipment, wherein the ratio of the hydrogen to the nitrogen is 3:1, fully mixing the mixed gas with the mixture in the temperature stirring equipment, continuously introducing the mixed gas into the temperature stirring equipment for 20-42 min, and enabling the pressure treatment in the temperature stirring equipment to be always between 6-11 MPa;

step four: and (3) decompressing the inside of the temperature stirring equipment, discharging the internal gas after passing through the filtering equipment, and introducing the liquid mixture in the temperature stirring equipment into the reaction equipment for reaction so as to prepare hexafluoroisopropanol.

In the first step, hexafluoroacetone water and hexafluoroisopropanol are initially stirred, and the heating temperature is kept at 90-150 ℃, so that the hexafluoroacetone water and the hexafluoroisopropanol can be uniformly mixed at the initial stage of adding the catalyst, the reaction time with the catalyst can be reduced, the reaction efficiency of the catalyst is improved, the temperature is 120-170 ℃ after the catalyst is added, the reaction efficiency of the catalyst is further improved, and the purity of a hexafluoroisopropanol product at the later stage is improved; after the mixed gas of hydrogen and nitrogen is added, the pressure is maintained between 6 and 11MPa, the reaction effect of the materials and the mixed gas is ensured, the reaction efficiency of the hexafluoroisopropanol preparation can be improved by the design, and the purity of the hexafluoroisopropanol is improved.

The reaction time is 30-53 min, and the reaction temperature is 135-165 ℃. Such a design maximizes reaction efficiency.

The catalyst comprises a catalytic metal. Such a design may improve the catalytic effect.

And part of the final product hexafluoroisopropanol is used for being put into the step I, so that normal production work is ensured. Such a design can be used for the continuous production of hexafluoroisopropanol.

The temperature stirring equipment comprises a heating cylinder, wherein a pressure relief mechanism is assembled on the upper side of the heating cylinder, a feed inlet is assembled on the upper side of the heating cylinder, a sealing cover is assembled on the feed inlet, a discharge pipe is arranged on the lower side of the heating cylinder, a control valve is assembled on the discharge pipe, a motor is assembled on the upper side of the heating cylinder, the motor drives a rotating shaft extending into the heating cylinder, a first thread section and a second thread section are respectively arranged on the upper side and the lower side of the rotating shaft, the thread rotating directions of the first thread section and the second thread section are opposite, permeable plates are respectively in threaded connection with the first thread section and the second thread section, four limiting mechanisms matched with the two permeable plates are arranged in the heating cylinder, each limiting mechanism comprises a fixed rod and two sliding blocks, the two sliding blocks are respectively assembled with the two permeable plates in a rotating manner, and a spiral slide rail is arranged on the surface of the fixed rod, two the sliding block all assembles with first spiral slide rail mutually, four the relative one side of two sliding blocks of stop gear all is equipped with rabbling mechanism, the cartridge heater is equipped with air inlet mechanism.

With the structure, a worker can add materials into the heating cylinder through the feeding hole, and the sealing cover is designed to facilitate the worker to seal the feeding hole; when the mixing and stirring are carried out, when the motor works and is initially started, the rotating shaft is driven to rotate in the forward direction, as the first thread section and the second thread section with opposite thread turning directions are respectively arranged on the upper side and the lower side of the rotating shaft, and the first thread section and the second thread section are in threaded connection with the water permeable plates, when the rotating shaft rotates, the two water permeable plates can be driven to move in the vertical direction simultaneously, and the moving directions of the two water permeable plates are opposite in the same time, so that when the rotating shaft rotates in the forward direction, the two water permeable plates can be driven to approach each other, and when the two water permeable plates approach each other and move, the four fixing rods limit the two water permeable plates, and the two water permeable plates are prevented from rotating; because the four sliding blocks which are rotatably assembled on the two permeable plates are assembled with the spiral sliding rail, when the two permeable plates move close to each other, the sliding blocks which are arranged on the two permeable plates rotate relative to the spiral sliding rail, and because the moving directions of the two permeable plates are opposite, the rotating directions of the sliding blocks which are arranged on the two permeable plates are opposite, the sliding blocks are assembled with the stirring mechanism, and the stirring mechanism is driven to stir when the sliding blocks rotate; after the motor drives the rotating shaft to rotate forwards for a second, the motor drives the rotating shaft to rotate reversely, and the two permeable plates can be driven to move away from each other simultaneously in the same way, and the stirring mechanisms are driven to rotate under the mutual matching action of the spiral sliding rails and the sliding blocks, and the rotating directions of the stirring mechanisms on the upper side and the lower side are opposite; the two water permeable plates reciprocate up and down in the heating cylinder and simultaneously drive the stirring mechanisms on the upper side and the lower side to reciprocate up and down in the heating cylinder, so that the stirring can be carried out in the heating cylinder in all directions, the stirring blind area is reduced, the rotation directions of the upper stirring mechanism and the lower stirring mechanism are opposite, the liquid in the heating cylinder is prevented from swirling in one direction, and the mixing effect is improved; the worker can relieve the pressure in the heating cylinder through the pressure relief mechanism; staff's accessible mechanism of admitting air fills hydrogen and nitrogen gas into the cartridge heater, and after the mixing operation is all accomplished, the staff can open the control valve, makes the mixture that mixes draw forth the cartridge heater through the discharging pipe.

The pressure relief mechanism comprises a pressure relief pipe connected with the heating cylinder, and the pressure relief pipe is provided with an on-off valve.

When the design needs to be decompressed, the on-off valve can be opened by a worker, so that the gas in the heating cylinder is discharged out of the heating cylinder through the decompression pipe.

The stirring mechanism comprises a rotary disc, the rotary disc is fixedly connected with a sliding block, the rotary disc is sleeved on the outer surface of the fixed rod, and a plurality of stirring rods are arranged on one side, away from the permeable plate, of the rotary disc.

When the sliding block rotates, the sliding block drives the rotary table to rotate, and the rotary table drives the stirring rods to rotate around the fixed rod, so that stirring and mixing work is performed.

Air inlet mechanism is including two gas holders, two the gas holder is located both sides inner wall about the cartridge heater respectively, two the relative one side of gas holder all is equipped with a plurality of shower nozzles, two a plurality of shower nozzle delivery port homogeneous phase lopsidedness of gas holder assembly, a plurality of shower nozzle slope opposite direction of upper and lower both sides, two connect between the gas holder and be equipped with the closed tube, the closed tube is equipped with the intake pipe.

According to the design, the mixed gas of hydrogen and nitrogen is respectively introduced into the upper gas storage pipe and the lower gas storage pipe through the communicating pipe, and is sprayed into the heating cylinder through the plurality of nozzles assembled by the upper gas storage pipe and the lower gas storage pipe, and the inclination directions of the plurality of nozzles on the upper side and the lower side are opposite, so that the mixed liquid on the upper side and the lower side can be respectively driven to swirl in directions which are different from each other, the mixed liquid on the upper side and the lower side forms impact in the middle, and the mixing effect is further improved.

And a limiting seat fixedly connected with the rotating shaft is arranged between the first thread section and the second thread section, and limiting blocks are arranged on the upper side and the lower side of the rotating shaft.

The extreme position of both sides about can two porous disks is spacing to such design, prevents that the range of reciprocating of two porous disks is too big.

The intake pipe other end UNICOM is provided with the mixing drum, the internal rotation of mixing drum is equipped with the impeller, the mixing drum upside is equipped with hydrogen pipe and nitrogen gas pipe respectively.

The staff can be respectively through hydrogen pipe and nitrogen gas pipe, with hydrogen and nitrogen gas fill simultaneously in the mixing drum, the impeller in the mixing drum is strikeed from top to bottom to mist, drives the impeller and rotates, thereby the impeller rotates alright mix hydrogen and nitrogen gas, improves the mixing efficiency of hydrogen and nitrogen gas, and hydrogen and nitrogen gas after the mixture are introduced into the intake pipe from the lower extreme.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural diagram of an embodiment of a method for preparing hexafluoroisopropanol according to the present invention;

FIG. 2 is a schematic view of a partial assembly structure of an embodiment of a method for preparing hexafluoroisopropanol according to the present invention;

FIG. 3 is a schematic view of an assembly structure of a permeable plate, a sliding block and a fixed rod according to an embodiment of a method for preparing hexafluoroisopropanol of the present invention;

FIG. 4 is a schematic view of a partial assembly structure of an embodiment of a method for preparing hexafluoroisopropanol according to the present invention;

the main element symbols are as follows:

the device comprises a heating cylinder 1, a feeding hole 11, a sealing cover 12, a discharging pipe 121, a control valve 122, a motor 13, a rotating shaft 14, a first thread section 15, a second thread section 16, a water permeable plate 2, a fixing rod 21, a sliding block 22, a spiral sliding rail 23, a pressure relief pipe 3, an on-off valve 31, a rotary disc 32, a stirring rod 33, an air storage pipe 4, a spray head 41, a communicating pipe 42, an air inlet pipe 43, a limiting seat 44, a limiting block 45, a mixing cylinder 5, an impeller 51, a hydrogen pipe 52 and a nitrogen pipe 53.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1 to 4, the method for preparing hexafluoroisopropanol of the present invention comprises the following steps:

the method comprises the following steps: proportionally filling hexafluoroacetone water and hexafluoroisopropanol into a temperature stirring device, starting the temperature stirring device, stirring the mixture of the hexafluoroacetone water and the hexafluoroisopropanol for 10-25 min, stabilizing the stirring device in the stirring process, heating the mixture of the hexafluoroacetone water and the hexafluoroisopropanol, wherein the heating temperature is 90-150 ℃;

step two: after mixing of hexafluoroacetone water and hexafluoroisopropanol is finished, adding a catalyst into a temperature stirring device, and continuously stirring for 13-20 min by the mixing device until hexafluoroacetone water, hexafluoroisopropanol and the catalyst are completely mixed, and simultaneously, the temperature stirring device still heats the inside, and the temperature is kept at 120-170 ℃;

step three: introducing mixed gas of hydrogen and nitrogen into the temperature stirring equipment, wherein the ratio of the hydrogen to the nitrogen is 3:1, fully mixing the mixed gas with the mixture in the temperature stirring equipment, continuously introducing the mixed gas into the temperature stirring equipment for 20-42 min, and enabling the pressure treatment in the temperature stirring equipment to be always between 6-11 MPa;

step four: and (3) decompressing the inside of the temperature stirring equipment, discharging the internal gas after passing through the filtering equipment, and introducing the liquid mixture in the temperature stirring equipment into the reaction equipment for reaction so as to prepare hexafluoroisopropanol.

In the first step, hexafluoroacetone water and hexafluoroisopropanol are initially stirred, and the heating temperature is kept at 90-150 ℃, so that the hexafluoroacetone water and the hexafluoroisopropanol can be uniformly mixed at the initial stage of adding the catalyst, the reaction time with the catalyst can be reduced, the reaction efficiency of the catalyst is improved, the temperature is kept at 120-170 ℃ after the catalyst is added, the reaction efficiency of the catalyst is further improved, and the purity of a hexafluoroisopropanol product at the later stage is improved; after the mixed gas of hydrogen and nitrogen is added, the pressure is maintained between 6 and 11MPa, the reaction effect of the materials and the mixed gas is ensured, the reaction efficiency of the hexafluoroisopropanol preparation can be improved by the design, and the purity of the hexafluoroisopropanol is improved.

The reaction time is 30min-53min, and the reaction temperature is 135 ℃ to 165 ℃. Such a design maximizes reaction efficiency.

The catalyst comprises a catalytic metal. Such a design may improve the catalytic effect.

And (3) using a part of the final product hexafluoroisopropanol to be put into the step one to ensure normal production work. Such a design can be used for the continuous production of hexafluoroisopropanol.

The temperature stirring equipment comprises a heating cylinder 1, a pressure relief mechanism is assembled on the upper side of the heating cylinder 1, a feed inlet 11 is assembled on the upper side of the heating cylinder 1, a sealing cover 12 is assembled on the feed inlet 11, a discharge pipe 121 is arranged on the lower side of the heating cylinder 1, a control valve 122 is assembled on the discharge pipe 121, a motor 13 is assembled on the upper side of the heating cylinder 1, the motor 13 is in transmission assembly and is provided with a rotating shaft 14 extending into the heating cylinder 1, a first thread section 15 and a second thread section 16 are respectively arranged on the upper side and the lower side of the rotating shaft 14, the thread turning directions of the first thread section 15 and the second thread section 16 are opposite, the first thread section 15 and the second thread section 16 are both in threaded connection with a water permeable plate 2, four limiting mechanisms matched with the two water permeable plates 2 are arranged in the heating cylinder 1, the four limiting mechanisms comprise a fixed rod 21 and two sliding blocks 22, the two sliding blocks 22 are both in rotating assembly with the two water permeable plates 2, and a spiral sliding rail 23 is arranged on the surface of the fixed rod 21, two sliding blocks 22 all assemble with first spiral slide rail 23 mutually, and two sliding block 22 relative one sides of four stop gear all are equipped with rabbling mechanism, and cartridge heater 1 is equipped with air inlet mechanism.

With the structure, a worker can add materials into the heating cylinder 1 through the feeding hole 11, and the sealing cover 12 is designed to facilitate the worker to seal the feeding hole 11; when mixing and stirring are carried out, when the motor 13 works and is initially started, the rotating shaft 14 is driven to rotate in the forward direction, because the first thread section 15 and the second thread section 16 with opposite thread turning directions are respectively arranged on the two sides of the upper side and the lower side of the rotating shaft 14, and the first thread section 15 and the second thread section 16 are both in threaded connection with the water permeable plates 2, when the rotating shaft 14 rotates, the two water permeable plates 2 can be driven to move in the vertical direction at the same time, and the moving directions of the two water permeable plates 2 are opposite at the same time, so that when the rotating shaft 14 rotates in the forward direction, the two water permeable plates 2 can be driven to approach each other, and when the two water permeable plates 2 approach each other and move, the four fixing rods 21 limit the two water permeable plates 2, and prevent the two water permeable plates 2 from rotating; because the four sliding blocks 22 rotatably assembled on the two permeable plates 2 are assembled with the spiral sliding rail 23, when the two permeable plates 2 approach to each other and move, the sliding blocks 22 installed on the two permeable plates 2 rotate relative to the spiral sliding rail 23, and because the moving directions of the two permeable plates 2 are opposite, the rotating directions of the sliding blocks 22 installed on the two permeable plates 2 are opposite, the sliding blocks 22 are assembled with a stirring mechanism, and the stirring mechanism is driven to stir when the sliding blocks 22 rotate; after the motor 13 drives the rotating shaft 14 to rotate forward for 12 seconds, the motor 13 drives the rotating shaft 14 to rotate reversely, and in this case, similarly to the above, the two permeable plates 2 can be driven to move away from each other at the same time, and the stirring mechanisms are driven to rotate under the mutual cooperation of the spiral sliding rail 23 and the sliding block 22, and the rotation directions of the stirring mechanisms on the upper side and the lower side are still opposite; the two water permeable plates 2 reciprocate up and down in the heating cylinder 1 and simultaneously drive the stirring mechanisms on the upper side and the lower side to reciprocate up and down in the heating cylinder 1 while stirring, so that the stirring can be carried out in the heating cylinder in all directions, the stirring blind area is reduced, the rotating directions of the upper stirring mechanism and the lower stirring mechanism are opposite, the liquid in the heating cylinder is prevented from swirling in one direction, and the mixing effect is improved; the worker can release the pressure in the heating cylinder 1 through the pressure release mechanism; the staff accessible mechanism of admitting air is filled hydrogen and nitrogen gas into cartridge heater 1 in, and after the mixing operation is all accomplished, the staff can open control valve 122, makes the mixture that mixes draw out cartridge heater 1 through discharging pipe 121.

The pressure relief mechanism comprises a pressure relief pipe 3 connected with the heating cylinder 1, and the pressure relief pipe 3 is provided with an on-off valve 31.

When the pressure relief work is needed, the worker can open the on-off valve 31 to discharge the gas in the heating cylinder 1 out of the heating cylinder 1 through the pressure relief pipe 3.

The stirring mechanism comprises a rotary disc 32, the rotary disc 32 is fixedly connected with the sliding block 22, the rotary disc 32 is sleeved on the outer surface of the fixed rod 21, and a plurality of stirring rods 33 are arranged on one side, away from the water permeable plate 2, of the rotary disc 32.

When the sliding block 22 rotates, the sliding block 22 drives the rotating disc 32 to rotate, and the rotating disc 32 drives the stirring rods 33 to rotate around the fixing rod 21, so that stirring and mixing work is performed.

Air inlet mechanism is including two gas holders 4, and two gas holders 4 are located 1 upper and lower both sides inner wall of heating cylinder respectively, and two relative one sides of gas holder 4 all are equipped with a plurality of shower nozzles 41, and the slope of 41 delivery ports homogeneous phase one side of a plurality of shower nozzles 41 of two gas holders 4 assembly, a plurality of shower nozzles 41 slope opposite direction of upper and lower both sides, connect between two gas holders 4 and be equipped with closed tube 42, and closed tube 42 is equipped with intake pipe 43.

According to the design, the mixed gas of hydrogen and nitrogen is respectively introduced into the upper and lower gas storage pipes 4 through the communicating pipe 42, and the plurality of spray heads 41 assembled by the upper and lower gas storage pipes 4 are sprayed into the heating cylinder 1, and because the inclination directions of the plurality of spray heads 41 on the upper and lower sides are opposite, the mixed liquid on the upper and lower sides can be respectively driven to swirl in different directions, so that the mixed liquid on the upper and lower sides forms impact in the middle, and the mixing effect is further improved.

A limiting seat 44 fixedly connected with the rotating shaft 14 is arranged between the first threaded section 15 and the second threaded section 16, and limiting blocks 45 are arranged on the upper side and the lower side of the rotating shaft 14.

Such design can be spacing to the extreme position of two porous disks 2 upper and lower both sides, prevents that two porous disks 2's the range of reciprocating is too big.

The other end of the air inlet pipe 43 is communicated with a mixing barrel 5, an impeller 51 is rotatably assembled in the mixing barrel 5, and a hydrogen pipe 52 and a nitrogen pipe 53 are respectively assembled on the upper side of the mixing barrel 5.

The staff can be respectively through hydrogen pipe 52 and nitrogen pipe 53, fill hydrogen and nitrogen gas simultaneously in mixing drum 5, and the mist from top to bottom strikes the impeller 51 in the mixing drum 5, drives impeller 51 and rotates, thereby impeller 51 rotates alright mix hydrogen and nitrogen gas, improves the mixing efficiency of hydrogen and nitrogen gas, and the hydrogen and the nitrogen gas after the mixture are introduced in intake pipe 43 from the lower extreme.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.