CN104495933B - Molybdenum oxide nano particle process units and production method - Google Patents
Molybdenum oxide nano particle process units and production method Download PDFInfo
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- CN104495933B CN104495933B CN201410760081.5A CN201410760081A CN104495933B CN 104495933 B CN104495933 B CN 104495933B CN 201410760081 A CN201410760081 A CN 201410760081A CN 104495933 B CN104495933 B CN 104495933B
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Abstract
The present invention relates to a kind of molybdenum oxide nano particle process units and production method, be intended to solve unstable product quality, complex procedures, inefficient technical problem in current molybdenum oxide nano particle production; It comprises for the persursor material of molybdenum oxide nano particle being carried out to the gasification unit of gasification process, for gasification state molybdenum oxide nano particle being carried out to the quenching unit of Quenching Treatment and for collecting the collector unit of molybdenum oxide nano particle finished product, the present invention has the plurality of advantages such as production efficiency is high, constant product quality.
Description
Technical field
The present invention relates to all devices field in nano particle production, be specifically related to a kind of molybdenum oxide nano particle process units and production method.
Background technology
Nano particle is the molecule that average-size is less than a micrometer (as one micron). This molecule is in industry widely known by the people, and people have keen interest to it. Because the nanocrystal of this molecule or other nanoscale features are greatly changing the performance of material. For example, the material that certain material of being made by nano particle is made with by conventional method or ordinary size particles (as powder) is made is compared, it can show more remarkable mechanical performance, and the nano particle in material also can show unique electrical property and magnetic property. The huge top layer of nano particle weight ratio makes to react rapidly between particle, and this also can impel the material production that has brand-new performance. In a word, people recognize that the material that can produce nano particle just means and may design and find material brand-new, that more have practical value, can be used in the field that machinery, optics, electric power, chemistry etc. are countless. But the difficulty that is limiting the extensive utilization of nano particle is to produce the nano particle of the desired size of people and weighs it by commercial criterion always, for example kilogram to calculate but not gram.
In the prior art, the mode of preparing molybdenum oxide nano particle has: in preparation process, persursor material is carried out to gasification process, and persursor material all can be evaporated in the process of gasification, therefore be to carry out in parital vacuum mostly, then rapid the persursor material of the gasification cooling nucleation of condensing precipitated into as nano-particle material. for example, in a kind of preparation process, the steam of the persursor material of gasification is directly injected on ice-cold even freezing rotor, condense in immediately drum surface, the scraper that is attached to rotor surface scrapes off the material condensing, and these are exactly nano particle product. because it is condensed in drum surface, the uniformity of its particle be can not be guaranteed, simultaneously scraper carries out also can contacting with drum surface in scraper on cylinder, easily cylinder metallics is scraped and in finished product, is affected its purity. take the rotating speed of above method rotor in preparation process, efficiency, the mode etc. of scraper has certain requirement, otherwise the quality of its product will directly be affected, therefore adopt its operation requirements of operation of aforesaid way high, control loaded down with trivial detailsly, cause the quality of its product well not ensured, and for example, in another preparation process, the vapor stream of the persursor material of gasification is injected in factor nozzle and condenses and form, first allow vapor stream accelerate at the polymeric part of nozzle, make it finally to accelerate to velocity of sound speed at jet hole, last vapor stream divides and further accelerates to supersonic speed speed at the through part of nozzle, and supersonic speed vapor stream rapidly cooling finally condensing becomes nano particle. and sonic nozzle preparation process, because of its continuation, can realize in theory and produce a large amount of nano particle products, it is poor that but it maintains a convenient pressure need to be during the course by sonic nozzle time, its operability utmost point is not easy to control, also there is another one problem in this preparation process simultaneously, nano-particle material may condense in nozzle inner walls, this will greatly reduce nozzle operational efficiency, even make it normally to move, make its preparation process more complicated, system operation cost is higher, and the quality of its gasification to nano particle finished product and quality plays crucial factor, therefore how to make persursor material effectively gasify, and gasification state molybdenum oxide nano particle is carried out to the problem that effective absorption is current this area research, also be the key factor that improves nano particle quality.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, adapt to reality needs, provide a kind of molybdenum oxide nano particle process units and production method, to solve unstable product quality, complex procedures, inefficient technical problem in current molybdenum oxide nano particle production.
In order to realize object of the present invention, the technical solution adopted in the present invention is:
Design a kind of molybdenum oxide nano particle process units, it comprises for the persursor material of molybdenum oxide nano particle being carried out to the gasification unit of gasification process, for gasification state molybdenum oxide nano particle being carried out to the quenching unit of Quenching Treatment and for collecting the collector unit of molybdenum oxide nano particle finished product.
It comprises gasification furnace described gasification unit, described gasification furnace comprises that its inside has the body of heater of closed cavity, it also comprises the feeding unit for carry persursor material in body of heater this gasification unit, at least one correspondence is arranged in described body of heater, be used for the electric heating body heating up in this body of heater, offer in the upper portion side wall of described body of heater the air inlet that at least one is in communication with the outside, and offer at least one for the state molybdenum oxide nano particle discharge of gasifying at the described middle part sidewall of stating body of heater, and with the gas outlet of the corresponding connection in described quenching unit, offer at least one charging aperture at the lower sides of described body of heater, the connection corresponding to described charging aperture of the discharge end of described feeding unit.
Described quenching unit comprises that manifold trunk, at least one its both ends open and its air inlet port correspondence are arranged at the collecting pipe in described gasification furnace; Described manifold trunk upper end closed, its lower ending opening; The port correspondence of giving vent to anger of described collecting pipe is arranged at the middle top of described manifold trunk, and with the corresponding connection of internal cavities of described manifold trunk; The lower ending opening of described manifold trunk, and connection corresponding to described collector unit;
In described collecting pipe, be provided with the quench fluid tube of connection corresponding to quenching liquid source, the outlet of described quench fluid tube is corresponding in opposite directions with the port of giving vent to anger of described collecting pipe; The gasification state molybdenum oxide nano particle of collecting via described collecting pipe, in the time of the outlet through described quench fluid tube, contacts with quenching liquid and is condensed into solid oxide molybdenum nano particle, and come together in described manifold trunk, and then collected by collector unit.
Described collector unit comprises can filter the filter course of molybdenum oxide nano particle, the warehouse that its inside has cavity, on the bulkhead of the middle and upper part of this warehouse, offer for molybdenum oxide nano particle after Quenching Treatment is introduced to the air inlet in warehouse cavity the corresponding connection of lower ending opening of this air inlet and manifold trunk; And offer exhaust outlet on the bulkhead of the middle and lower part of described warehouse; And be also provided with the air exhauster of connection corresponding to exhaust outlet via corresponding blast pipe in described exhaust ports; Described filter course correspondence is arranged in the cavity between air inlet and exhaust outlet, is the region of two isolation by the cavity isolation up and down of filter course.
The end that is positioned at the quench fluid tube of described collecting pipe is " (" shape, and being centered close on same level line of the center of the end of this quench fluid tube outlet and the port of giving vent to anger of described collecting pipe;
Described quenching unit also comprises that its diameter is greater than the protection pipe fitting of the diameter of collecting pipe; The port end correspondence of giving vent to anger of described collecting pipe is arranged at the middle part in described protection pipe fitting; The port of giving vent to anger of described collecting pipe, via the outlet side of described protection pipe fitting and the corresponding connection of the internal cavities of described manifold trunk, seals between the other end of described protection pipe fitting and described collecting pipe; And be positioned at gasification furnace collecting pipe below offer at least one is communicated with pipe inner region gas port with gasification furnace internal cavities on tube wall;
The dead in line of described collecting pipe and protection pipe fitting, and be provided with thermal insulation layer at described collecting pipe with protection pipe fitting is middle, the thickness of described thermal insulation layer is 7-10 millimeter;
In described manifold trunk, be provided with the guiding tube with the corresponding connection of described protection pipe fitting;
Described quenching liquid source comprises fluid reservoir, the corresponding connection of input port of described fluid reservoir and described quench fluid tube; And on described quench fluid tube, be provided with valve, and on the quench fluid tube between the outlet of described valve and quench fluid tube the corresponding Pressure gauge that is provided with also.
Described filter course and horizontal direction are 20 °～30 ° angle settings; And this filter course is waterproof cloth;
In described air inlet, correspondence is provided with and the molybdenum oxide nano particle of gasification can be introduced into the air entraining pipe above filter course, and the gas outlet of this air entraining pipe end face is foremost the inclined-plane of an inclination, and this inclined-plane is parallel to setting with described filter course; And be also provided with the air blast of connection corresponding to this air entraining pipe at the inlet end of described air entraining pipe, this air blast also with the corresponding connection of lower ending opening of described manifold trunk;
Also be provided with its length arc feeder corresponding with described filter course at the least significant end place of described filter course, trough rim of this feeder and the corresponding connection of least significant end of described filter course, the corresponding connection of bulkhead of its another trough rim and described warehouse; And on the bulkhead above described feeder, also offer a discharging opening, and at this discharging opening place also correspondence be provided with movable closing door; On bulkhead in described cavity, be also provided with seismic mass.
Described gasification unit also comprise for the cavity in gasification furnace be blown into the second air blast of gas, for by cavity, gasify state molybdenum oxide nano particle extract out negative pressure air blast; Described the second air blast is via the connection corresponding to described air inlet of corresponding pipeline; Described negative pressure air blast correspondence is arranged on the collecting pipe between described gasification furnace and described manifold trunk;
Described feeding unit comprises hopper, spiral feeding cylinder, the bottom surface of described hopper is the plane tilting, and offer discharge gate in the sidewall of this hopper, the least significant end place correspondence of bottom surface, the connection corresponding to described discharge gate of the feed end of described spiral feeding cylinder, the connection corresponding to described charging aperture of the discharge end of this spiral feeding cylinder;
Furnace roof inside at described gasification furnace is also coated with high temperature-resistant coating material.
The present invention also designs a kind of method that uses molybdenum oxide nano particle process units as above to produce molybdenum oxide nano particle, and it comprises the following steps:
A. the temperature in gasification furnace is risen between 1150 DEG C to 1210 DEG C;
B. open successively the second air blast, negative pressure air blast, air blast, air exhauster;
C. open valve, make the end outlet ejection of quenching liquid by quench fluid tube;
D. to the persursor material of sending into molybdenum oxide nano particle in gasification furnace;
Further, continue 8-10 minute carrying out front temperature in gasification furnace should be remained between 1150 DEG C to 1210 DEG C of step (d);
In the time carrying out step (c), the pressure of the end outlet ejection quenching liquid of quench fluid tube should be remained on to 4.0-5.3Pa;
The pumping capacity of described air exhauster remains on 1000-1200L/min;
Described feeding unit inputs to persursor material in gasification furnace with the amount of 250-300Kg/ hour;
Described quenching liquid is liquid nitrogen; The persursor material of described molybdenum oxide nano particle is molybdenum trioxide powder.
Beneficial effect of the present invention is:
1. the present invention is by adopting electric heating body that the temperature in gasification furnace is increased to the above temperature of 1,000 degree, can by enter persursor material in body of heater directly by it by the solid-state gaseous state that is converted into, control by the electric heating body in this gasification furnace can will be controlled the size of gasification state molybdenum oxide nano particle particle, make it meet the demand of producing, simultaneously by the design's gasification furnace, in application process, can realize continuous, persistence production, meet the requirement of enterprise; And the one-tenth of this gasification furnace produces low, the non-environmental-pollution of cost, extensive one-tenth easy and simple to handle, that be easy to enterprise produces.
2. by the design's air inlet, and in body of heater, be blown into gas in conjunction with the second air blast of the design is continuable, as air etc., meet the reduction reaction of persursor material, improve its production efficiency.
3. by the design's gas outlet, and in conjunction with the design's collecting pipe, can be by gasification state molybdenum oxide nano particle in real time, effectively it be extracted out in body of heater, and then be delivered to the condensing in operation of next operation.
4. the high temperature-resistant coating material applying on the furnace roof above the design's electric heating body, the heat that electric heating body can be sent reflects, and makes its thermal energy reflex to furnace bottom place, and then improves the gasification conversion ratio of persursor material. To improve its production efficiency.
5. the feeding unit by the design is continuable to transferring raw material in body of heater, meets quantity-produced requirement; Via the design's gasification furnace, in its application process, this gasification furnace is per hour can distil or the gasify persursor material of 250-300Kg kilogram.
6. the present invention is by changing traditional quenching unit, use the combination of the design's quench fluid tube and collecting pipe instead, can carry out effective Quenching Treatment to gasification state molybdenum oxide nano particle, can avoid the finished product of producing in existing apparatus to contain impurity, the problem that its purity is not high, simultaneously this installs relative existing apparatus, easy and simple to handle, be easy to realize, operation is simple, can meet the demand that modern enterprise serialization is produced, angry efficiency is high.
7. the present invention is by abandoning original design, adopt the design of brand-new filter course, molybdenum oxide nano particle after filter course gasification efficiently, its production efficiency is high, product quality can effectively be ensured, simultaneously, easy and simple to handle, be easy to realize, adopt this to install its enterprise's production cost and will greatly reduce to enterprise.
3. the present invention also has other beneficial effects, will propose in the lump with corresponding structure in an embodiment.
Brief description of the drawings
Fig. 1 is primary structure principle schematic of the present invention;
Fig. 2 is cardinal principle structural profile schematic diagram of the present invention;
Fig. 3 is A portion structure for amplifying schematic diagram in Fig. 2;
In figure: 1. collecting pipe; 3. protection pipe fitting; 4. manifold trunk; 5. quench fluid tube; 6. gas port; 7. solid oxide molybdenum nano particle; 8. gasification state molybdenum oxide nano particle; 9. air entraining pipe; 10. thermal insulation layer; The end of 11. quench fluid tubes; 12. guiding tubes; 13. gasification furnaces; 14. fluid reservoirs; 15. valves; 16. Pressure gauges; 17. warehouses; 18. inclined-planes; 19. filter courses; 20. seismic mass; 21. blast pipes; 22. feeders; 23. movable closing doors; 24. air exhauster 25. air blasts; 26. gases; 27. second air blasts; 28. persursor materials; 29. hoppers; 30. bottom surfaces; 31. spiral feeding cylinders; 32. spiral charging sheets; 33. negative pressure air blasts; 34. high temperature-resistant coating materials; 35. electric heating bodies; 36. air inlets.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment 1: a kind of molybdenum oxide nano particle process units and production method, referring to Fig. 1, Fig. 2, Fig. 3; It comprises this device for the persursor material of molybdenum oxide nano particle being carried out to the gasification unit of gasification process, for gasification state molybdenum oxide nano particle being carried out to the quenching unit of Quenching Treatment and for collecting the collector unit of molybdenum oxide nano particle finished product.
It comprises gasification furnace described gasification unit, and it comprises that its inside has the body of heater 13 of closed cavity, four correspondences are arranged in described body of heater for the electric heating body 35 to heating up in this body of heater described gasification furnace; It also comprises the feeding unit for carry persursor material in described body of heater this gasification unit; Further, offer an air inlet being in communication with the outside 36 in the upper portion side wall of body of heater, meanwhile, this gasification furnace also comprises that for be blown into gas 26(in cavity can be air) the second air blast 27, this second air blast 27 is via the connection corresponding to air inlet 36 of corresponding pipeline; And offer a gas outlet for gasification state molybdenum oxide nano particle is discharged at the described middle part sidewall of stating body of heater 13, this gasification furnace also comprises the negative pressure air blast 33 for the state molybdenum oxide nano particle 8 that gasifies in cavity is extracted out, offers a charging aperture at the lower sides of body of heater; Described feeding unit comprises hopper 29, spiral feeding cylinder 31, in figure 32 be for by persursor material carry spiral charging sheet; The plane of the bottom surface 30 of described hopper 29 for tilting, and offer discharge gate in the least significant end place correspondence of the sidewall bottom surface 30 of this hopper 29, the feed end connection corresponding to this discharge gate of described spiral feeding cylinder 31, the connection corresponding to charging aperture of the discharge end of this spiral feeding cylinder 31. For improving the service life of this gasification furnace, described body of heater is made up of SAE316 stainless steel simultaneously. Meanwhile, be also coated with high temperature-resistant coating material in the furnace roof inside of this gasification furnace, the heat that this high temperature-resistant coating material can send electric heating body reflects, and makes its thermal energy reflex to furnace bottom place, and then improves the gasification conversion ratio of persursor material. To improve its production efficiency, above-described high temperature-resistant coating material is the available high temperature-resistant coating material in this area, as being the inorganic material that can bear more than 1300 DEG C temperature. Meanwhile, be also enclosed with heat-insulation layer in the outside of described body of heater 13, avoid the loss of energy, reduce the waste of resource, above-described heat-insulation layer can be the heat-insulation layer that high temperature furnace is incubated used in the market.
Described quenching unit it comprise that manifold trunk 4, two its left and right both ends opens, its air inlet port correspondences are arranged in gasification furnace and for collect the collecting pipe 1 of gasification state molybdenum oxide nano particle, with and diameter be greater than the protection pipe fitting 3 of the diameter of collecting pipe; The port correspondence of giving vent to anger of described collecting pipe 1 is arranged at the middle part in protection pipe fitting 3; And both deads in line of described collecting pipe 1 and protection pipe fitting 3; and be provided with thermal insulation layer 5 in collecting pipe 1 and the centre of protection pipe fitting 3; the thickness of this thermal insulation layer 5 is 10 millimeters; thermal insulation layer 5 can play cooling effect to collecting pipe 1; thereby the solid oxide molybdenum nano particle 7 that prevention is flowed through after condensing of collecting pipe 1 evaporates again, improves its production efficiency. The port of giving vent to anger of described collecting pipe 1, via the protection outlet side of pipe fitting 3 and the corresponding connection of the internal cavities of manifold trunk 4,, seals between the other end of described protection pipe fitting 3 (right-hand member in Fig. 3) and described collecting pipe 1 meanwhile. Described negative pressure air blast 33 correspondences are arranged on collecting pipe 1.
Further, in the collecting pipe 1 in protection in pipe fitting, be provided with the quench fluid tube 5 of connection corresponding to quenching liquid source, the end 11 that is positioned at the quench fluid tube of collecting pipe 1 be " (" shape, the outlet of this quench fluid tube is corresponding in opposite directions with the port of giving vent to anger of described collecting pipe 1; And being centered close on same level line of the center that the end 11 of this quench fluid tube exports and the port of giving vent to anger of collecting pipe 1. Described manifold trunk 4 upper end closeds, its lower ending opening; Described protection pipe fitting 3 correspondences are arranged at the middle top of manifold trunk; , be provided with and the guiding tube 12 of protecting the corresponding connection of pipe fitting in described manifold trunk, the cross section of the discharging port of described guiding tube 12 is the oblique line of inclination meanwhile. Above-described quenching liquid source comprises fluid reservoir 14, the corresponding connection of input port of described fluid reservoir 14 and quench fluid tube 5. Meanwhile, on quench fluid tube 5, be also provided with valve 15, and on the quench fluid tube 5 between the outlet of valve 15 and quench fluid tube 5 the corresponding Pressure gauge 16 that is provided with also, spray the size of pressure by the adjustable quench fluid tube 5 of unlatching of control valve 15. Simultaneously in order to improve its operating efficiency, be positioned at gasification furnace collecting pipe 1 below offer multiple gas ports that pipe inner region is in communication with the outside 6 on tube wall.
It comprises the filter course 19 that can filter molybdenum oxide nano particle and be made up of waterproof cloth, the warehouse 17 that its inside has cavity described collector unit, on the bulkhead of the middle and upper part of this warehouse 17, offer for the molybdenum oxide nano particle of gasification is introduced to the air inlet in cavity, and offer exhaust outlet on the bulkhead of the middle and lower part of described warehouse; Further, in described air inlet, correspondence is provided with and the molybdenum oxide nano particle of gasification can be introduced into the air entraining pipe 9 above filter course, and end face is foremost the inclined-plane 18 of an inclination in the gas outlet of this air entraining pipe 9, as shown in Fig. 2 18, this inclined-plane 18 is parallel to setting with filter course 19, arrange in opposite directions to form its gas outlet and filter course, so the gasification of being discharged by gas outlet too molybdenum oxide nano particle be directly expelled on filter course. Further, be also provided with and the air blast of the corresponding connection of this air entraining pipe 9 at the inlet end of described air entraining pipe 9. The corresponding connection of lower ending opening of this air blast and manifold trunk. And be also provided with the air exhauster of connection corresponding to exhaust outlet via corresponding blast pipe 21 in described exhaust ports. Described filter course 19 correspondences are arranged in the cavity between air inlet and exhaust outlet, are the region of two isolation by the cavity isolation up and down of filter course 19, and this filter course 19 is 20 ° of angle settings with horizontal direction. Simultaneously, also be provided with its length arc feeder 22 corresponding with described filter course at the least significant end place of described filter course 19, trough rim of this feeder 22 and the corresponding connection of least significant end of described filter course 19, the corresponding connection of bulkhead of its another trough rim and described warehouse 17. Meanwhile, on the bulkhead above described feeder 22, also offer a discharging opening, and at this discharging opening place also correspondence be provided with movable closing door 23. Product can be taken out by this movable closing door, further, on the bulkhead in described cavity, also be provided with seismic mass 20, by the interval vibrations of this seismic mass, the molybdenum oxide nano particle after filtering be shaken to the feeder of below aborning.
In concrete application, first should be by the temperature heat to 1150 in this gasification furnace DEG C between 1210 DEG C, open afterwards the second air blast, negative pressure negative pressure air blast, can think conveying persursor material in stove simultaneously, in persursor material is inputted straight stove time, can be within the utmost point short time can be by it from the solid-state gaseous state that is converted into, middle not through liquid transformation, simultaneously with its in air carry out reduction reaction; Gasification state molybdenum oxide nano particle can be collected pipe and absorbs and be discharged from, and carries out the reaction of next operation, and the persursor material in this gasification furnace can be the multiple molybdenum compound that is converted into molybdenum trioxide, as molybdenum trioxide powder etc. In force collecting pipe and on gas port correspondence be arranged at that gasification furnace 13 is interior to be absorbed fully to the gasification state molybdenum oxide nano particle in this stove; simultaneously; in order to increase the service life of this device; described quench fluid tube, manifold trunk, protection pipe fitting are made by SAE316 stainless steel, and described collecting pipe is by being made up of high temperature alloy (as Hastelloy). And above-mentioned quenching liquid can include but are not limited to these liquid: as hydrogen, helium, nitrogen, oxygen, argon and methane. Preferably liquid nitrogen of quenching liquid in the present embodiment. The gasification state molybdenum oxide nano particle 8 that this quenching liquid is can be quick cooling has vaporized. The nano particle that the pressure of the discharge liquid nitrogen of the end of the outlet of the quench fluid tube 5 of the present embodiment collecting pipe 1 inside (or gaseous state, gas-liquid mixed all can) is produced this device has very large impact. For example, the end of the outlet of quench fluid tube 5 is the closer to the left end of collecting pipe 1, and the nano particle of producing is just larger. Contrary, far away near the left end of collecting pipe 1, the nano particle of producing is just less. But other factors also can affect particle size. For example,, even if the end of the outlet of quench fluid tube 5 is very near near the left end of collecting pipe 1, as long as accelerate the going out hydraulic coupling and also can produce less nano particle of end of the outlet of quench fluid tube 5. And under the effect of air blast, come together in described manifold trunk 4, and then sucked in collector unit and collected by the effect of air exhauster.
Embodiment 2: use molybdenum oxide nano particle process units as above to produce the method for molybdenum oxide nano particle, referring to Fig. 1, Fig. 2, Fig. 3; It comprises the following steps:
A. the temperature in gasification furnace is risen between 1150 DEG C to 1210 DEG C;
B. open successively the second air blast 27, negative pressure air blast 33, air blast 25, air exhauster 24;
C. open valve, make the end outlet ejection of quenching liquid by quench fluid tube;
D. to the persursor material of sending into molybdenum oxide nano particle in gasification furnace;
Carrying out, step (d) is front should remain on the temperature in gasification furnace lasting 8-10 minute between 1150 DEG C to 1210 DEG C; Meanwhile, in the time carrying out step (c), the pressure of the end outlet ejection quenching liquid of quench fluid tube should be remained on to 4.0-5.3Pa; And the pumping capacity of air exhauster 24 remains on 1000-1200L/min; Feeding unit should input to persursor material in gasification furnace with the amount of 250-300Kg/ hour; Quenching liquid in this method is liquid nitrogen; The persursor material of molybdenum oxide nano particle is molybdenum trioxide powder.
Finally point out; although; what embodiments of the invention were announced is preferred embodiment; but be not limited to this, those of ordinary skill in the art, very easily according to above-described embodiment; understand spirit of the present invention; and make different amplifications and variation, but only otherwise depart from spirit of the present invention, all in protection scope of the present invention.
Claims (8)
1. a molybdenum oxide nano particle process units, is characterized in that: it comprises for the persursor material of molybdenum oxide nano particle being carried out to the gasification unit of gasification process, for gasification state molybdenum oxide nano particle being carried out to the quenching unit of Quenching Treatment and for collecting the collector unit of molybdenum oxide nano particle finished product;
It comprises gasification furnace described gasification unit, described gasification furnace comprises that its inside has the body of heater of closed cavity (13), it also comprises the feeding unit for carry persursor material (28) in body of heater (13) this gasification unit, at least one correspondence is arranged in described body of heater (13), be used for the electric heating body heating up in this body of heater (35), offer at least one air inlet being in communication with the outside (36) in the upper portion side wall of described body of heater (13), and offer at least one for state molybdenum oxide nano particle (8) discharge of gasifying at the described middle part sidewall of stating body of heater (13), and with the gas outlet of the corresponding connection in described quenching unit, lower sides at described body of heater (13) offers at least one charging aperture, the connection corresponding to described charging aperture of the discharge end of described feeding unit,
Described gasification unit also comprise for the cavity in gasification furnace be blown into second air blast (27) of gas (26), for by cavity, gasify state molybdenum oxide nano particle (8) extract out negative pressure air blast (33); Described the second air blast (27) is via the connection corresponding to described air inlet (36) of corresponding pipeline; Described negative pressure air blast (33) correspondence is arranged on the collecting pipe between the manifold trunk in described gasification furnace and quenching unit;
Described feeding unit comprises hopper (29), spiral feeding cylinder (31), the plane of the bottom surface (30) of described hopper (29) for tilting, and offer discharge gate in the sidewall of this hopper (29), the least significant end place correspondence of bottom surface, the feed end connection corresponding to described discharge gate of described spiral feeding cylinder (31), the discharge end connection corresponding to described charging aperture of this spiral feeding cylinder (31);
Also be coated with high temperature-resistant coating material (34) in the furnace roof inside of described gasification furnace.
2. molybdenum oxide nano particle process units as claimed in claim 1, is characterized in that: described quenching unit comprises that manifold trunk (4), at least one its both ends open and its air inlet port correspondence are arranged at the collecting pipe (1) in described gasification furnace; Described manifold trunk (4) upper end closed, its lower ending opening; The port correspondence of giving vent to anger of described collecting pipe (1) is arranged at the middle top of described manifold trunk (4), and with the corresponding connection of internal cavities of described manifold trunk (4); The lower ending opening of described manifold trunk, and connection corresponding to described collector unit;
In described collecting pipe (1), be provided with the quench fluid tube (5) of connection corresponding to quenching liquid source, the outlet of described quench fluid tube (5) is corresponding in opposite directions with the port of giving vent to anger of described collecting pipe (1); The gasification state molybdenum oxide nano particle (8) of collecting via described collecting pipe (1) is in the time of the outlet through described quench fluid tube (5), contact with quenching liquid and be condensed into solid oxide molybdenum nano particle (7), and come together in described manifold trunk (4), and then collected by collector unit.
3. molybdenum oxide nano particle process units as claimed in claim 2, it is characterized in that: described collector unit comprises can filter the filter course (19) of molybdenum oxide nano particle, the warehouse (17) that its inside has cavity, on the middle and upper part bulkhead of this warehouse (17), offer for molybdenum oxide nano particle after Quenching Treatment is introduced to the air inlet in warehouse cavity the corresponding connection of lower ending opening of this air inlet and manifold trunk; And offer exhaust outlet on the bulkhead of the middle and lower part of described warehouse; And be also provided with the air exhauster (24) of connection corresponding to exhaust outlet via corresponding blast pipe (21) in described exhaust ports; Described filter course (19) correspondence is arranged in the cavity between air inlet and exhaust outlet, is the region of two isolation by the cavity isolation up and down of filter course (19).
4. molybdenum oxide nano particle process units as claimed in claim 3, it is characterized in that: the end (11) that is positioned at the quench fluid tube of described collecting pipe (1) is " (" shape, and being centered close on same level line of the center of the end of this quench fluid tube (11) outlet and the port of giving vent to anger of described collecting pipe (1);
Described quenching unit also comprises that its diameter is greater than the protection pipe fitting (3) of the diameter of collecting pipe (1); The port end correspondence of giving vent to anger of described collecting pipe (1) is arranged at the middle part in described protection pipe fitting (3); The port of giving vent to anger of described collecting pipe (1), via the outlet side of described protection pipe fitting (3) and the corresponding connection of internal cavities of described manifold trunk (4), seals between the other end of described protection pipe fitting (3) and described collecting pipe (1); And on the below tube wall that is positioned at the collecting pipe of gasification furnace (1), offer at least one is communicated with pipe inner region gas port (6) with gasification furnace internal cavities;
Described collecting pipe (1) and both deads in line of protection pipe fitting (3), and be provided with thermal insulation layer (10) in the middle of described collecting pipe (1) and protection pipe fitting (3), the thickness of described thermal insulation layer (10) is 7-10 millimeter;
In described manifold trunk (4), be provided with the guiding tube (12) with the corresponding connection of described protection pipe fitting (3);
Described quenching liquid source comprises fluid reservoir (14), the corresponding connection of input port of described fluid reservoir (14) and described quench fluid tube (5); And be provided with valve (15) on described quench fluid tube (5), and the upper also corresponding Pressure gauge (16) that is provided with of quench fluid tube (5) between the outlet of described valve (15) and quench fluid tube (5).
5. molybdenum oxide nano particle process units as claimed in claim 4, is characterized in that: described filter course (19) is 20 °～30 ° angle settings with horizontal direction; And this filter course (19) is waterproof cloth;
In described air inlet, corresponding being provided with can be introduced into the molybdenum oxide nano particle of gasification the air entraining pipe (9) above filter course, the gas outlet of this air entraining pipe (9) end face is foremost the inclined-plane (18) of an inclination, and this inclined-plane (18) are parallel to setting with described filter course (19); And be also provided with and the air blast (25) of the corresponding connection of this air entraining pipe (9) at the inlet end of described air entraining pipe (9), this air blast (25) also with the corresponding connection of lower ending opening of described manifold trunk;
Also be provided with its length arc feeder (22) corresponding with described filter course at the least significant end place of described filter course (19), trough rim of this feeder (22) and the corresponding connection of least significant end of described filter course (19), the corresponding connection of bulkhead of its another trough rim and described warehouse (17); And on the bulkhead of the top of described feeder (22), also offer a discharging opening, and at this discharging opening place also correspondence be provided with movable closing door (23); On bulkhead in described cavity, be also provided with seismic mass (20).
6. use molybdenum oxide nano particle process units as claimed in claim 5 to produce a method for molybdenum oxide nano particle, it is characterized in that: it comprises the following steps:
A. the temperature in gasification furnace is risen between 1150 DEG C to 1210 DEG C;
B. open successively the second air blast (27), negative pressure air blast (33), air blast (25), air exhauster (24);
C. open valve, make the end outlet ejection of quenching liquid by quench fluid tube;
D. to the persursor material of sending into molybdenum oxide nano particle in gasification furnace.
7. the method for production molybdenum oxide nano particle as claimed in claim 6, is characterized in that: continue 8-10 minute carrying out front temperature in gasification furnace should be remained between 1150 DEG C to 1210 DEG C of step (d);
In the time carrying out step (c), the pressure of the end outlet ejection quenching liquid of quench fluid tube should be remained on to 4.0-5.3Pa;
The pumping capacity of described air exhauster (24) remains on 1000-1200L/min;
Described feeding unit inputs to persursor material in gasification furnace with the amount of 250-300Kg/ hour.
8. the method for production molybdenum oxide nano particle as claimed in claim 6, is characterized in that: described quenching liquid is liquid nitrogen; The persursor material of described molybdenum oxide nano particle is molybdenum trioxide powder.
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| CN108387431A (en) * | 2018-02-27 | 2018-08-10 | 南昌工程学院 | The device for filtering and collecting of nano material |
| CN113511680B (en) * | 2021-08-10 | 2022-11-25 | 郑州大学 | Preparation method of high-purity molybdenum trioxide |
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