CN106512850B - A kind of granulation by spraying melted nicotinamide tower and its operation method - Google Patents
A kind of granulation by spraying melted nicotinamide tower and its operation method Download PDFInfo
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- CN106512850B CN106512850B CN201611075040.8A CN201611075040A CN106512850B CN 106512850 B CN106512850 B CN 106512850B CN 201611075040 A CN201611075040 A CN 201611075040A CN 106512850 B CN106512850 B CN 106512850B
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- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
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Abstract
The present invention provides a kind of granulation by spraying melted nicotinamide tower and its operation methods.The present invention includes tower body, and exhaust pipe is arranged at the top of tower body, and air inlet pipe is arranged in tower body bottom；It drenches and atomization nozzle component is set in liquid zone, atomization nozzle component includes several ascending circle pipes being successively arranged, it encloses on the bottom surface of pipe and is uniformly distributed nozzle, rotating assembly is arranged in the center of several circle pipes, rotating assembly includes central axis, central axis periphery is sequentially arranged several pivoted housings, and several circle pipes connect one to one with the formation of several pivoted housings, and rotating assembly is drivingly connected by rotary electric machine；In several suspension boards that are arranged above and below in floating zone, a large amount of sieve pores are uniformly opened on suspension board, sieve pore specification is arranged from small to large step by step according to the position of suspension board from the bottom to top；Material guiding hopper funnel-shaped, the inner cavity of the big mouth connection floating zone of material guiding hopper are set in wind-force area, and the osculum of material guiding hopper is connected to air inlet pipe, and several outlet air spray heads are arranged in the lower section of material guiding hopper, and several outlet air spray heads connect air pump by blast pipe.
Description
Technical field
The invention belongs to field of mechanical technique, are related to a kind of granulation tower, especially a kind of granulation by spraying melted nicotinamide tower
And its operation method.
Background technique
Niacinamide (Nicotinamide) i.e. vitamin B3, chemical name Niacinamide are 129~131 DEG C of fusing point, white
Color crystalline powder, soluble easily in water or ethyl alcohol.Niacinamide is widely used in medicine, food, is human body and animal in feed industry
The indispensable nutritional ingredient of growth and development.In addition, niacinamide also act as plant growth regulator, hair growth promoting agent,
Hair dyeing growth regulator, polymer stabilizer, electroplate liquid additive and biochemical reagents etc..
Currently, the production method of industry niacinamide is mainly with 3- picoline, 2- methyl -5- ethylpyridine or quinoline both at home and abroad
Quinoline is raw material, generates niacin or nicotinic acid nitrile by oxidant direct oxidation or catalysis oxidation, ammoxidation, then by nicotinic acid nitrile hydrolysis or niacin
Amine is dehydrated to obtain niacinamide.Regardless of which kind of above-mentioned approach used, final niacinamide is all by aqueous solution concentration (as evaporated), mistake
It is obtained after filter, drying, is powdery product by the niacinamide that prior art produces, partial size is in 0.2mm or less.Due to producing
Product partial size very little, packaging, field of employment dust from flying, workshop dust pollution is serious, on the one hand product is caused to lose, even more serious
Be to be damaged to worker's body.And in storage and transportation, use process, it is easy to reunite due to product cut size very little, and niacinamide sheet
The easy moisture absorption face agglomeration of body, the poor dispersion when niacinamide of this agglomeration of reuniting is used as additive or auxiliary agent etc., serious shadow
Ring downstream product quality.
Current existing granulation tower the problems such as there are shaped granule object specification is unevenly consistent, and granulation process is difficult to.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, one kind is proposed in the intracavitary setting multi-angle of tower
Distinguished and admirable reverse transport is spaced rotating spraying streamline, cooperates the filter structure that drifts along, and optimization is granulated dimensional uniformity, and realization was granulated
The granulation by spraying melted nicotinamide tower and its operation method of journey controllability.
Object of the invention can be realized by the following technical scheme: a kind of granulation by spraying melted nicotinamide tower, including is in
Exhaust pipe is arranged in cylindric tower body and console, the top of the tower body, and air inlet pipe, the tower is arranged in the bottom of the tower body
Wind-force area, floating zone and leaching liquid zone are divided into body from the bottom to top；Atomization nozzle component, the atomization are set in the leaching liquid zone
Nozzle component includes several ascending circle pipes being successively arranged, and is uniformly distributed nozzle, Ruo Gansuo on the bottom surface of the circle pipe
The center setting rotating assembly of circle pipe is stated, the rotating assembly includes central axis, and the central axis periphery is sequentially arranged several turns
Set, several circle pipes connect one to one with several pivoted housing formation, and the rotating assembly is drivingly connected by rotary electric machine；
In several suspension boards that are arranged above and below in the floating zone, a large amount of sieve pores, the specification of the sieve pore are uniformly opened on the suspension board
Be arranged from small to large step by step according to the position of suspension board from the bottom to top, the floating zone is divided into several exclusion regions, it is described every
The bottom edge in disconnected region and top margin are respectively provided with gear edge, and a suspension board is arranged in each exclusion region, the suspension board
The formation of the side wall of periphery and exclusion region is slidably connected, and the periphery of the suspension board and gear edge can form and abut against limit；Institute
The material guiding hopper that setting is funnel-shaped in wind-force area is stated, the big mouth of the material guiding hopper is connected to the inner cavity of the floating zone, the guide
The osculum of bucket is connected to the air inlet pipe, and several outlet air spray heads are arranged in the lower section of the material guiding hopper, and several outlet air spray heads pass through
Blast pipe connects air pump；Several control buttons are set on the console, control mainboard, the control are set in the console
Mainboard passes through rotary electric machine and air pump described in circuit connection.
In this granulation by spraying melted nicotinamide tower, reversely rotated by interval of several circle pipes in spray process, thus
So that the streamlined injection of hydrojet, so the shooting force that avoids linear type from spraying it is excessive and impact feed powder cause further to crush or
Dust raises；In addition the reverse rotation of adjacent turn pipe makes hydrojet streamlined at cross network, further enhances the energy for capturing powder
Power, and optimize the uniformity that powder liquid combines.The specification of all sieve pores on each suspension board is identical, between adjacent suspension board, on
The sieve pore of square suspension board is greater than the sieve pore of lower section suspension board, is thus the screening area of same specification particulate matter between adjacent suspension board
Between, in the gap neutral gear of wind-force, the particulate matter less than sieve pore passes through sieve pore and falls in the screening section of lower section, and is greater than sieve pore
Particulate matter remain on the suspension board in this section.
In above-mentioned granulation by spraying melted nicotinamide tower, the bottom setting steering bracket of the outlet air spray head, described turn
It include fixing seat to bracket, the top of the fixing seat connects the outlet air spray head, the outer wall of the universal joint by universal joint
Upper to connect telescopic cylinder by push-pull rod, the telescopic cylinder passes through console described in circuit connection.
In above-mentioned granulation by spraying melted nicotinamide tower, several water conservancy diversion are set between the material guiding hopper and tower body side wall
Drainage port is arranged in slot, the tower body bottom, and the diversion trench is connected with drainage port.
In above-mentioned granulation by spraying melted nicotinamide tower, the sieve pore on the suspension board is bellmouth, the bellmouth
Macropore upward, aperture is downward.It is arranged to bellmouth state, to be further conducive to the division to different layers area particle diameter, with
The particle being gradually increased is avoided to drop to lower zone because of quality increase.
In above-mentioned granulation by spraying melted nicotinamide tower, filter screen, the filtering are set on the nozzle of the air inlet pipe
Pass through dismountable clamp connection between net and nozzle.Stop the bulk impurity being mixed in powder using filter screen, to avoid
Bulk impurity, which enters in tower body, causes distinguished and admirable, spraying disorder, or even stops, blocks sieve pore on suspension board.
In above-mentioned granulation by spraying melted nicotinamide tower, the quantity of several circle pipes is the even number in 4 to 12.
The operation method of granulation by spraying melted nicotinamide tower, comprising the following steps:
1), according to the characteristic of powder and vulcanization be granulated specification requirement, by console set rotary electric machine revolving speed with
It turns to, to regulate and control the collocation of the forward and reverse of several circle pipes, the density of the streamlined injection of hydrojet, forward and backward is to more complicated mist
Liquid shape density into the net is bigger, and the streamlined interval of the bigger hydrojet of revolving speed is closer, and thus the concentration of spray film is got in tower body inner cavity
Greatly, the binding capacity of spray film and powder is big and uniform；The volume of air supply of air pump and the size of wind speed, the matter of particle are set by console
It is bigger to measure more big required volume of air supply, wind speed more bulky grain remains in that the time in tower body is shorter, and wind speed is got over little particle and remained in
Time in tower body is longer；
2) feed powder, is blown by air inlet pipe, feed powder initially enters wind-force area, is gradually extended up by material guiding hopper, while going out
The distinguished and admirable lower support of wind spray head injection rises；Feed powder enters the spray film that contact is sprayed from top to bottom in floating zone, and it is solidifying to carry out feed powder
Poly- to gradually form particle, multilayer suspension plate in limit section under the action of the forces of the wind in floating up and down, by particle in sieve pore
Shuttles, gradually filter out increasing equal-specification particulate matter layer by layer；The particulate matter of final compound specification requirement is through filtering
Liquid zone is discharged from exhaust pipe.
In above-mentioned operation method, the collapsing length that telescopic cylinder drives push-pull rod is manipulated by console, with rotation
Universal joint adjusts the air outlet angle of outlet air spray head, and air outlet angle determines that the distinguished and admirable supporting force to particulate matter and leading particle are solidifying
Poly- dynamics and efficiency.
In above-mentioned operation method, after granulation tower stops operation, the spray film and powder remained inside tower body is mixed
Object flows into diversion trench along side wall, and builds up and be discharged by drainage port, to ensure the drying regime in tower body, and is easy to tower
Body cleaning.
Compared with prior art, this granulation by spraying melted nicotinamide tower and its operation method, in the intracavitary setting multi-angle of tower
Distinguished and admirable reverse transport is spaced rotating spraying streamline, cooperates the filter structure that drifts along, optimization is granulated dimensional uniformity, in granulation process
In different size is sieved, realize granulation process controllability, thus can be according to the characteristic of feed powder and the requirement of finished product, flexibly
Control mode is formulated, the degree of controllability of finished product is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this granulation by spraying melted nicotinamide tower.
In figure, 1, tower body；2, air inlet pipe；3, exhaust pipe；4, atomization nozzle component；5, suspension board；6, edge is kept off；7, guide
Bucket；8, outlet air spray head.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1, this granulation by spraying melted nicotinamide tower, including cylindrical tower body 1 and console, tower body 1
Exhaust pipe 3 is arranged in top, and the bottom of tower body 1 is arranged air inlet pipe 2, is divided into wind-force area, floating zone and leaching from the bottom to top in tower body 1
Liquid zone；It drenching and atomization nozzle component 4 is set in liquid zone, atomization nozzle component 4 includes several ascending circle pipes being successively arranged,
It encloses on the bottom surface of pipe and is uniformly distributed nozzle, rotating assembly is arranged in the center of several circle pipes, and rotating assembly includes central axis, central axis
Periphery is sequentially arranged several pivoted housings, and several circle pipes connect one to one with the formation of several pivoted housings, and rotating assembly is driven by rotary electric machine
Dynamic connection；In being arranged above and below several suspension boards 5 in floating zone, uniformly open a large amount of sieve pores on suspension board 5, the specification of sieve pore according to
The position of suspension board 5 from the bottom to top is arranged from small to large step by step, and floating zone is divided into several exclusion regions, the bottom edge of exclusion region
Gear is respectively provided with top margin, and one suspension board 5, the periphery of suspension board 5 and the side wall shape of exclusion region are set along 6, each exclusion region
At being slidably connected, the periphery of suspension board 5 and gear can form along 6 and abut against limit；Material guiding hopper 7 funnel-shaped is set in wind-force area,
The inner cavity of the big mouth connection floating zone of material guiding hopper 7, the osculum of material guiding hopper 7 are connected to air inlet pipe 2, and the lower section setting of material guiding hopper 7 is several
Outlet air spray head 8, several outlet air spray heads 8 connect air pump by blast pipe；Several control buttons are set on console, are set in console
Control mainboard is set, control mainboard passes through circuit connection rotary electric machine and air pump.
In this granulation by spraying melted nicotinamide tower, reversely rotated by interval of several circle pipes in spray process, thus
So that the streamlined injection of hydrojet, so the shooting force that avoids linear type from spraying it is excessive and impact feed powder cause further to crush or
Dust raises；In addition the reverse rotation of adjacent turn pipe makes hydrojet streamlined at cross network, further enhances the energy for capturing powder
Power, and optimize the uniformity that powder liquid combines.The specification of all sieve pores on each suspension board 5 is identical, between adjacent suspension board 5,
The sieve pore of top suspension board 5 is greater than the sieve pore of lower section suspension board 5, is thus same specification particulate matter between adjacent suspension board 5
Section is screened, in the gap neutral gear of wind-force, the particulate matter less than sieve pore passes through sieve pore and falls in the screening section of lower section, and big
In on the suspension board 5 that the particulate matter of sieve pore remains in this section.
Steering bracket is arranged in the bottom of outlet air spray head 8, and steering bracket includes fixing seat, passes through universal joint at the top of fixing seat
Outlet air spray head 8 is connected, telescopic cylinder is connected by push-pull rod on the outer wall of universal joint, telescopic cylinder passes through circuit connection control
Platform.
Several diversion trenches are set between 1 side wall of material guiding hopper 7 and tower body, and drainage port, diversion trench and drainage is arranged in 1 bottom of tower body
Mouth is connected.
Sieve pore on suspension board 5 is bellmouth, and upward, aperture is downward for the macropore of bellmouth.It is arranged to bellmouth state, with
Further it is conducive to the division to different layers area particle diameter, drops to lower section because quality increases to avoid the particle being gradually increased
Region.
Filter screen is set on the nozzle of air inlet pipe 2, passes through dismountable clamp connection between filter screen and nozzle.It utilized
Strainer stops the bulk impurity being mixed in powder, enters in tower body 1 to avoid bulk impurity and causes distinguished and admirable, spraying disorder, very
To stopping, block sieve pore on suspension board 5.
The quantity of several circle pipes is the even number in 4 to 12.
The operation method of granulation by spraying melted nicotinamide tower, comprising the following steps:
1), according to the characteristic of powder and vulcanization be granulated specification requirement, by console set rotary electric machine revolving speed with
It turns to, to regulate and control the collocation of the forward and reverse of several circle pipes, the density of the streamlined injection of hydrojet, forward and backward is to more complicated mist
Liquid shape density into the net is bigger, and the streamlined interval of the bigger hydrojet of revolving speed is closer, and thus the concentration of spray film is got in 1 inner cavity of tower body
Greatly, the binding capacity of spray film and powder is big and uniform；The volume of air supply of air pump and the size of wind speed, the matter of particle are set by console
The more big required volume of air supply of amount is bigger, and the time that wind speed more bulky grain remains in tower body 1 is shorter, and wind speed is got over little particle and remained in
Time in tower body 1 is longer；
2) feed powder, is blown by air inlet pipe 2, feed powder initially enters wind-force area, it is gradually extended up by material guiding hopper 7, while
The distinguished and admirable lower support that outlet air spray head 8 sprays rises；Feed powder enters the spray film that contact is sprayed from top to bottom in floating zone, carries out feed powder
Cohesion gradually forms particle, and multilayer suspension plate 5 in limit section under the action of the forces of the wind in floating up and down, by particle in sieve pore
Interior shuttles gradually filter out increasing equal-specification particulate matter layer by layer；The particulate matter of final compound specification requirement passes through
Liquid zone is drenched, is discharged from exhaust pipe 3.
The collapsing length that telescopic cylinder drives push-pull rod is manipulated by console, adjusts outlet air spray head 8 to rotate universal joint
Air outlet angle, air outlet angle determines the distinguished and admirable supporting force to particulate matter and leading particle aggregation dynamics and efficiency.
After granulation tower stops operation, the spray film and powders mixture that 1 inside of tower body remains flow into water conservancy diversion along side wall
Slot, and build up and be discharged by drainage port, to ensure the drying regime in tower body 1, and it is easy to the cleaning of tower body 1.
This granulation by spraying melted nicotinamide tower and its operation method, in the distinguished and admirable reverse transport of the intracavitary setting multi-angle of tower,
Every rotating spraying streamline, cooperate the filter structure that drifts along, optimization is granulated dimensional uniformity, carries out in granulation process to different size
Screening realizes granulation process controllability, thus can flexibly formulate control mode according to the characteristic of feed powder and the requirement of finished product, complete
The degree of controllability of kind finished product.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Although tower body 1 is used more herein；Air inlet pipe 2；Exhaust pipe 3；Atomization nozzle component 4；Suspension board 5；Keep off edge
6；Material guiding hopper 7；The terms such as outlet air spray head 8, but it does not exclude the possibility of using other terms.It the use of these terms is only to be
It is more convenient to describe and explain essence of the invention；Being construed as any additional limitation all is and present invention essence
What mind was disagreed.
Claims (9)
1. a kind of granulation by spraying melted nicotinamide tower, including cylindrical tower body and console, the top of the tower body is arranged
Air inlet pipe is arranged in the bottom of exhaust pipe, the tower body, which is characterized in that is divided into wind-force area in the tower body from the bottom to top, hangs
Floating region and leaching liquid zone；Atomization nozzle component is set in the leaching liquid zone, and the atomization nozzle component includes that several are ascending
The circle pipe being successively arranged is uniformly distributed nozzle on the bottom surface of the circle pipe, and rotating assemblies, institute is arranged in the centers of several circle pipes
Stating rotating assembly includes central axis, and the central axis periphery is sequentially arranged several pivoted housings, and several circles are managed and several described turns
Set is formed and is connected one to one, and the rotating assembly is drivingly connected by rotary electric machine；It is several in being arranged above and below in the floating zone
Suspension board, uniformly opens a large amount of sieve pores on the suspension board, the specification of the sieve pore according to suspension board position from the bottom to top by
Grade is arranged from small to large, and the floating zone is divided into several exclusion regions, and the bottom edge of the exclusion region and top margin are respectively provided with gear
Edge, each exclusion region is interior to be arranged a suspension board, and the periphery of the suspension board and the side wall of exclusion region form cunning
Dynamic connection, the periphery of the suspension board and gear edge can form and abut against limit；Funnel-shaped lead is set in the wind-force area
Hopper, the big mouth of the material guiding hopper are connected to the inner cavity of the floating zone, and the osculum of the material guiding hopper is connected to the air inlet pipe, described
Several outlet air spray heads are arranged in the lower section of material guiding hopper, and several outlet air spray heads connect air pump by blast pipe；On the console
Several control buttons are set, control mainboard is set in the console, and the control mainboard is by rotating electricity described in circuit connection
Machine and air pump.
2. granulation by spraying melted nicotinamide tower according to claim 1, which is characterized in that the bottom of the outlet air spray head is set
Steering bracket is set, the steering bracket includes fixing seat, and the top of the fixing seat connects the outlet air spray head by universal joint,
Telescopic cylinder is connected by push-pull rod on the outer wall of the universal joint, the telescopic cylinder passes through console described in circuit connection.
3. granulation by spraying melted nicotinamide tower according to claim 1, which is characterized in that the material guiding hopper and tower body side wall
Between several diversion trenches are set, drainage port is arranged in the tower body bottom, and the diversion trench is connected with drainage port.
4. granulation by spraying melted nicotinamide tower according to claim 1, which is characterized in that the sieve pore on the suspension board is
Bellmouth, upward, aperture is downward for the macropore of the bellmouth.
5. granulation by spraying melted nicotinamide tower according to claim 1, which is characterized in that set on the nozzle of the air inlet pipe
Filter screen is set, passes through dismountable clamp connection between the filter screen and nozzle.
6. granulation by spraying melted nicotinamide tower according to claim 1, which is characterized in that it is several it is described circle pipes quantity be
Even number in 4 to 12.
7. the operation method of granulation tower according to claim 1, which comprises the following steps:
1), the specification requirement being granulated according to the characteristic of powder and vulcanization sets revolving speed and the steering of rotary electric machine by console,
To regulate and control the collocation of the forward and reverse of several circle pipes, the density of the streamlined injection of hydrojet, forward and backward is formed to more complicated spray film
The density of net is bigger, and the streamlined interval of the bigger hydrojet of revolving speed is closer, and thus the concentration of spray film is bigger in tower body inner cavity, spray film
It is big and uniform with the binding capacity of powder；The volume of air supply of air pump and the size of wind speed are set by console, the quality of particle is bigger
Required volume of air supply is bigger, and wind speed more bulky grain remains in that the time in tower body is shorter, and wind speed is got over little particle and remained in tower body
Time it is longer；
2) feed powder, is blown by air inlet pipe, feed powder initially enters wind-force area, is gradually extended up by material guiding hopper, while spraying in outlet air
The distinguished and admirable lower support of head injection rises；Feed powder enters the spray film that contact is sprayed from top to bottom in floating zone, carry out feed powder cohesion by
Gradually form particle, multilayer suspension plate is past in sieve pore by particle under the action of the forces of the wind in floating up and down in limit section
It is multiple to shuttle, increasing equal-specification particulate matter is gradually filtered out layer by layer；The particulate matter of final compound specification requirement through filtering liquid zone,
It is discharged from exhaust pipe.
8. operation method according to claim 7, which is characterized in that manipulate telescopic cylinder by console and drive push-pull rod
Collapsing length, to rotate the air outlet angle that universal joint adjusts outlet air spray head, air outlet angle determines the distinguished and admirable support to particulate matter
Power and leading particle aggregation dynamics and efficiency.
9. operation method according to claim 7, which is characterized in that after granulation tower stops operation, inside tower body more than institute
The spray film and powders mixture stayed flows into diversion trench along side wall, and builds up and be discharged by drainage port, to ensure in tower body
Drying regime, and it is easy to tower body cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075040.8A CN106512850B (en) | 2016-11-29 | 2016-11-29 | A kind of granulation by spraying melted nicotinamide tower and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075040.8A CN106512850B (en) | 2016-11-29 | 2016-11-29 | A kind of granulation by spraying melted nicotinamide tower and its operation method |
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| Publication Number | Publication Date |
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| CN106512850A CN106512850A (en) | 2017-03-22 |
| CN106512850B true CN106512850B (en) | 2019-03-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342029A (en) * | 1989-07-07 | 1991-02-22 | Freunt Ind Co Ltd | Granulating and coating device and granulating and coating method using the same |
| CN101569840A (en) * | 2009-06-01 | 2009-11-04 | 杭州胜大药业有限公司 | Method of granulation by spraying melted nicotinamide |
| CN201500527U (en) * | 2009-06-01 | 2010-06-09 | 杭州胜大药业有限公司 | Prilling tower for fusing and atomizing nicotinamide |
| WO2013150090A1 (en) * | 2012-04-04 | 2013-10-10 | Lonza Ltd | Nicotinamide powder and process and device for its production |
| CN203370515U (en) * | 2013-06-25 | 2014-01-01 | 浙江升华拜克生物股份有限公司 | Spray prilling tower |
-
2016
- 2016-11-29 CN CN201611075040.8A patent/CN106512850B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342029A (en) * | 1989-07-07 | 1991-02-22 | Freunt Ind Co Ltd | Granulating and coating device and granulating and coating method using the same |
| CN101569840A (en) * | 2009-06-01 | 2009-11-04 | 杭州胜大药业有限公司 | Method of granulation by spraying melted nicotinamide |
| CN201500527U (en) * | 2009-06-01 | 2010-06-09 | 杭州胜大药业有限公司 | Prilling tower for fusing and atomizing nicotinamide |
| WO2013150090A1 (en) * | 2012-04-04 | 2013-10-10 | Lonza Ltd | Nicotinamide powder and process and device for its production |
| CN203370515U (en) * | 2013-06-25 | 2014-01-01 | 浙江升华拜克生物股份有限公司 | Spray prilling tower |
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| CN106512850A (en) | 2017-03-22 |
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