CN104926517B - A kind of preparation facilities of difunctional slow-release nitrogen fertilizer and its application - Google Patents
A kind of preparation facilities of difunctional slow-release nitrogen fertilizer and its application Download PDFInfo
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- CN104926517B CN104926517B CN201510347297.3A CN201510347297A CN104926517B CN 104926517 B CN104926517 B CN 104926517B CN 201510347297 A CN201510347297 A CN 201510347297A CN 104926517 B CN104926517 B CN 104926517B
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Abstract
The present invention relates to a kind of preparation facilities of difunctional slow-release nitrogen fertilizer and its application, described preparation facilities includes material pre-treatment component, drum granulating drying integrated thermomechanical components and the aerating elasticity sulphur parcel component being sequentially connected by pipeline, preparation facilities passes through the design using drum granulating dry integrated machine as the whole set process device of core component, can be using ammonium chloride as main material, prepare a kind of be granulated altogether by liquid ureaformaldehyde bonding ammonium chloride and be used as core, difunctional slow-release nitrogen fertilizer prepared by outer wrapping aerating elasticity sulphur.Compared with prior art, difunctional slow-release nitrogen fertilizer prepared by the present invention has sustained release phase length, nitrogen released rate can change with soil moisture content, preparation facilities is safe efficient, easy, economical, and the technological process of preparation facilities and difunctional slow-release nitrogen fertilizer organically combines, products obtained therefrom will greatly improve the added value of the main material ammonium chloride of union soda by-product.
Description
Technical field
The present invention relates to nitrogen fertilizer production field, preparation facilities more particularly, to a kind of difunctional slow-release nitrogen fertilizer and its should
With.
Background technology
Soda industry is one of foundation stone of whole chemical industry, can be rated as " the mother of chemical industry.Produce the master of soda ash in the world at present
Technique is wanted to include Solvay methods (by-product calcium chloride) and soda and sociation center (Hou's process for soda production, side product sodium chloride).Because of combined soda method
The atom utilization of method is higher, and the ammonium chloride of its by-product can be used as ammonium fertilizer, and in China, this method is more widely applied.
About 20,000,000 tons/year of the production capacity of current domestic ammonium chloride, actual annual production has also reached about 10,000,000 tons/year.Such high yield
The ammonium chloride of amount, in addition to being used for medicine and battery industry on a small quantity, major applications are in agriculture field.Commodity ammonium chloride fertilizer
Usually powdered or micro meritic, on the one hand easily moisture absorption is lumpd, and influences to transport, store and use；On the other hand it is hydrolyzed
In highly acid, if being attached to the damage that plant tissue is easily caused on the cauline leaf of crops during administration.Therefore, for powdered chlorination
It is lifting commodity ammonium chloride fertilizer item matter that ammonium, which carries out granulation, and then improves the added value one of the main material ammonium chloride of connection alkali by-product
Kind effective means.
At present, mainly there are crystallization granulation (CN 101249970A), compacting for the method that powdered ammonium chloride is granulated
It is granulated (CN 2358075) and agglomeration granulation (CN 102503636A) three classes.The main thought of wherein agglomeration granulation is by powder
The base fertilizer of shape mixes with some binding agents, recycles rotary drum or granulating disc by reunion bonded pelleting, therefore also referred to as
For bonded pelleting (CN102503636A, CN103073366A).Because the ammonium chloride granular fertilizer of this method preparation is compared to it
Granular fertilizer shape obtained by his two kinds of prilling process is rounder and more smooth, and intensity is of a relatively high, is currently the development that ammonium chloride is granulated
Direction.Make a general survey of the various binding agents used in agglomeration granulation, the liquid urea formaldehyde polymer of low molecule amount because its caking property is stronger,
And there is certain slow-release nitrogen function, and it is preferable with the affinity of powdered ammonium chloride, turn into and bond agglomeration granulation field at present
More popular research direction (CN102910991A).Although however, solves grain substantially as binding agent using urea formaldehyde polymer
Safety and pollution problem in shape Production of manure and application, but make ammonium chloride-ureaformaldehyde for preparing in this way granular
The problems such as fertilizer causes fertilizer efficiency fluctuation larger there is also intragranular component skewness, hygroscopic disintegration.
The content of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of difunctional slow-release nitrogen
The preparation facilities of fertilizer and its application.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of preparation facilities of difunctional slow-release nitrogen fertilizer, including：
Material pre-treatment component：Including the urea-formaldehyde heating polymeric components being composed in series by pipeline and ammonium chloride-urea
Aldehyde heats hydrid component；
Drum granulating-drying integrated thermomechanical components：Including be arranged on base the air-introduced machine being sequentially connected by pipeline, turn
Granulating cylinder, rotary drying drum and hot-blast stove are roused, drive is respectively equipped with described drum granulating cylinder and rotary drying drum, and its rotates
The first transmission system and the second transmission system, described drum granulating cylinder and rotary drying drum are inclined on base；
Aerating elasticity sulphur wraps up component：Nitrogen heater, high shear agitation including being sequentially connected by pipeline add
Hot device and sulphur packing machine；
Described drum granulating cylinder connects ammonium chloride-ureaformaldehyde by pipeline and heats hydrid component, described rotary drying drum
Connect high shear agitation heater and sulphur packing machine respectively by pipeline.
Described drum granulating cylinder and rotary drying drum is erected on base by multiple carrier tilts, wherein, rotation is made
The inclination angle of grain cylinder is adjustable for 1 °~4 °, and the inclination angle of rotary drying drum is adjustable for 2 °~3 °.
The first described transmission system includes the first buncher, the first support roller being arranged on drum granulating cylinder rotates dress
Put and be connected with first gear transmission device, the first described buncher with first gear transmission device, the first described support roller
Tumbler includes the first swivel becket, the first support roller, and first support roller is arranged on the bracket of support drum granulating cylinder, and with the
One swivel becket connects, and during work, starts the first buncher, first gear transmission device is driven, so as to drive drum granulating cylinder
Rotate；
The second described transmission system includes the second buncher, the second support roller being arranged on rotary drying drum rotates dress
Put and be connected with second gear transmission device, the second described buncher with second gear transmission device, the second described support roller
Tumbler includes the second swivel becket, the second support roller, and second support roller is arranged on the bracket of support rotary drying drum, and with the
Two swivel beckets connect, and during work, start the second buncher, second gear transmission device are driven, so as to drive rotary drying drum
Rotate.
The slanted upper end of described drum granulating cylinder is provided with charging aperture, charging aperture connection ammonium chloride-ureaformaldehyde heating mixing
Part, described feed inlet end also connect air-introduced machine by pipeline；
The inclination lower end of described rotary drying drum is provided with discharging opening, and the discharging opening is sequentially connected Screen assemblies by pipeline
With sulphur packing machine, described discharge port end also connects hot-blast stove and high shear agitation heater respectively by pipeline.
The specific effect of each composition structure of the preparation facilities of above-mentioned difunctional slow-release nitrogen fertilizer is as follows：
Material pre-treatment component：Polymeric components and ammonium chloride-ureaformaldehyde heating hydrid component series connection group are heated by urea-formaldehyde
Into described material pre-treatment component is used to realize urea formaldehyde polymer and the full and uniform mixed process of ammonium chloride：By urea, formaldehyde
And the liquid urea formaldehyde polymer that auxiliary agent is formed with certain mol ratio heating polymerization is by controlling fundamental reaction condition (synthesis temperature
With material ratio) to reach specific polymerization scope and be granulated required physicochemical property, and mixed in ammonium chloride-ureaformaldehyde heating
Close in part makes it uniformly be mixed with ammonium chloride major ingredient by special high speed shear technology, to be granulated in next step
Form the core of difunctional slow-release nitrogen fertilizer.
Drum granulating-drying integrated thermomechanical components：Described drum granulating-drying integrated thermomechanical components are the core of this covering device
Component, including high inclination-angle drum granulating cylinder, hot-blast stove and the air-introduced machine being driven by the first independent transmission system, and by independence
The second transmission system transmission small inclination rotary drying drum, the component be used for realize urea formaldehyde polymer and ammonium chloride continuous granulation
And drying process：The granulation of the granulation-dry integrated machine and drying nest and a unconventional rotating cylinder, but two by independence
The rotating cylinder of the relatively independent tool different angle of buncher transmission is formed.Drum granulating cylinder and rotary drying drum can realize difference
Speed rotation：High inclination-angle drum granulating cylinder rotary speed as prime is relatively fast, it can be ensured that ammonium chloride and ureaformaldehyde are granulated into
Ball rate is higher, and particle composition is more uniform, and movable drum granulating cylinder rotating speed using gravity and centrifugal force to make ammonium chloride-urea
Conversion zone is quickly moved out after aldehyde core particle balling preparation, can effectively prevent from newly making the bonding of particle.Rotation as rear class is done
The exit of dry cylinder introduces the dry-heat air sent by hot-blast stove, is introduced into simultaneously wraps up height in component by aerating elasticity sulphur in addition
Waste heat nitrogen derived from fast shear agitation heater, and the charging by gas circuit pipeline via air-introduced machine from prime drum granulating cylinder
Mouthful place discharge, cause temperature flow field gradient and the opposite convection current in material flow field, with utmost improve the thermal efficiency of whole system with
Drying capacity.Rotary drying drum rotary speed as rear class is relatively slow, it is ensured that freshly prepd ammonium chloride-ureaformaldehyde core
Particle fully with drying hot air, can also avoid ammonium chloride-ureaformaldehyde core particle from excessively colliding, grind in the drying process
Damage influences the process of next step sulphur parcel.The design of drum granulating-dry integrated machine can be by drum granulating and Rotary drying
Two physical and chemical processes generally coupled decouple to a certain extent, while remain traditional type monotubular all-in-one and save the energy
The advantages of, and two-step reaction can be carried out under respective optimum condition and operating condition, so that the chlorine prepared
Change ammonium-ureaformaldehyde core particle balling ratio is high, intensity is larger and aridity is good, laid a good foundation for next step sulphur parcel.
Aerating elasticity sulphur wraps up component：Including nitrogen heater, high shear agitation heater, sulphur packing machine, institute
The aerating elasticity sulphur parcel component stated is used to realize following process：Nitrogen is preheating to 230 DEG C first in nitrogen heater,
Then 230 DEG C are warming up to after sulphur is melted, thick elastic sulphur is become and adds high shear agitation heater
In, the nitrogen of preheating is sprayed into thereto and carries out high shear agitation, so as to form a large amount of microbubbles in sulphur, is added this
Gas elasticity sulphur material sprays into sulphur packing machine, and one layer of sulphur for carrying micro- stomata is formed on ammonium chloride-ureaformaldehyde core particle
Coating.The sulfur coating of this porous surface can either air-and water-permeable, be easy in internal ammonium chloride-ureaformaldehyde core particle nitrogen member
Element progressively discharges so that this product has the characteristics of sustained release phase length and nitrogen released rate can change with soil moisture content；Sulphur simultaneously
Sulphur also can progressively transform into sulfate in soil by edaphon (sulfur bacteria), supplement element sulphur for crop, simultaneously
Basic soil can also be improved to a certain degree, and there is the multiple actions such as fertilizer and soil conditioner.
A kind of application of the preparation facilities of difunctional slow-release nitrogen fertilizer, comprises the following steps：
(a) it is 1 to be heated toward urea-formaldehyde and mol ratio is added in polymeric components:1~4.5:1 urea, formaldehyde and auxiliary agent,
60 DEG C~80 DEG C are heated to, liquid urea formaldehyde polymer is made in reactive polymeric；
(b) liquid urea formaldehyde polymer is put into ammonium chloride-ureaformaldehyde heating hydrid component, and is passed through a certain amount of chlorination
Ammonium, described liquid urea formaldehyde polymer quality are the 5%~25% of ammonium chloride dosage, are heated to 70 DEG C~90 DEG C, are stirred,
Obtain mixed material；
(c) mixed material is introduced into drum granulating cylinder, adjusts drum granulating cylinder rotating speed so that mixed material is in drum granulating
Mixing granulation in cylinder, obtains ammonium chloride-ureaformaldehyde particle, obtained ammonium chloride-ureaformaldehyde particle then is moved into rotary drying drum；
(d) rotary drying drum rotating speed is adjusted so that the ammonium chloride moved in rotary drying drum-ureaformaldehyde particle from rotation with doing
The convection current preheating and drying air that dry cylinder discharge port end is passed through fully contacts, and then removes dried ammonium chloride-ureaformaldehyde particle
To Screen assemblies, ammonium chloride-ureaformaldehyde core particle is obtained after screening；
(e) 230 DEG C are warming up to after sulphur is melted, is added in high shear agitation heater, then sprays into warp thereto
Nitrogen heater is preheated to 230 DEG C of nitrogen and carries out high shear agitation, obtains aerating elasticity sulphur material, and high speed shear is stirred
The waste heat nitrogen mixed in heater is passed through in rotary drying drum as convection current preheating and drying air, dries ammonium chloride-ureaformaldehyde particle；
(f) ammonium chloride made from step (d)-ureaformaldehyde core particle is added in sulphur packing machine, is then sprayed into aerating bullet
Property sulphur material, wrap up ammonium chloride-ureaformaldehyde core particle, that is, obtain outside parcel with micro- stomata sulfur coating it is difunctional
Slow-release nitrogen fertilizer.
In step (c) rotary drum granulating cylinder by the first buncher adjust rotating speed, drum granulating cylinder rotating speed be 10rpm~
60rpm, the material lagging time in drum granulating cylinder are 10 minutes~30 minutes；
Rotary drying drum in step (d) adjusts rotating speed by the second buncher, rotary drying drum rotating speed be 10rpm~
20rpm, dry materials time are 10 minutes~20 minutes.
Ammonium chloride-ureaformaldehyde core particle diameter that screening obtains in step (d) is 2mm~4mm.
The mol ratio of aerating elasticity sulphur material and ammonium chloride-ureaformaldehyde core particle is 1 in step (f):30~1:20, bag
Temperature is wrapped up in as 110 DEG C~160 DEG C.
The present invention, can be with by the design using drum granulating-dry integrated machine as the whole set process device of core component
Ammonium chloride is main material, prepares a kind of be granulated altogether by liquid ureaformaldehyde bonding ammonium chloride and is used as core, outer wrapping aerating elasticity
Difunctional slow-release nitrogen fertilizer prepared by sulphur
Compared with prior art, the present invention has advantages below：
(1) excellent product performance is prepared：Aerating sulphur bag prepared by the preparation facilities of the difunctional slow-release nitrogen fertilizer of the present invention
Clothing ammonium chloride-difunctional the slow-release nitrogen fertilizer of ureaformaldehyde, it is difficult can not only fully to solve the problems, such as that powdery ammonium chloride is granulated, additionally it is possible to solve
Certainly the blending of traditional ureaformaldehyde reunite bond ammonium chloride particle easily absorb water disintegration the problem of, while one layer of micro- stomata of tool of outer layer covers
Sulphur film can not only be crop supplement element sulphur, also enable this product have the sustained release phase length with nitrogen released rate with soil
The characteristics of change of moisture content；
(2) preparation facilities operation is flexible：The present invention preparation facilities use modular structure design, ensure material with
Under conditions of gas supply, device can continuous for a long time, interval or switching operating, so as to investigate different key parameters pair
Fertilizer product forms and the influence of function；
(3) preparation facilities is safe efficient, economical, and raw material sources are extensive：A whole set of preparation facilities has safe efficient, simple
Just the characteristics of, economic, while organically combined with the preparation technology flow of difunctional slow-release nitrogen fertilizer, products obtained therefrom will greatly improve connection
The added value of the main material ammonium chloride of alkaline process by-product, if wide development prospect, pole will be had by being promoted
The competitiveness of big lifting China's soda industry.
Brief description of the drawings
Fig. 1 is the difunctional slow-release nitrogen fertilizer preparation technology flow chart of the present invention；
Fig. 2 is the structural representation of drum granulating-drying integrated thermomechanical components of the present invention；
In figure, 1- drum granulating cylinders, 2- rotary drying drums, the bunchers of 3- first, 4- first gear transmission devices, 5- supports
Frame, 6- the first support roller tumblers, 7- bases, 8- air-introduced machines, 9- hot-blast stoves, the bunchers of 10- second, 11- second gears pass
Dynamic device, 12- the second support roller tumblers, 13- charging apertures, 14- discharging openings, A- material pre-treatment components, B- drum granulatings-dry
Dry integral thermomechanical components, C- aerating elasticity sulphur parcel component.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to
Following embodiments.
Embodiment 1
A kind of preparation facilities of difunctional slow-release nitrogen fertilizer, including：
Material pre-treatment component A：Including be composed in series by pipeline urea-formaldehyde heating polymeric components and ammonium chloride-
Ureaformaldehyde heats hydrid component；
Drum granulating-drying integrated thermomechanical components B, its structure are as shown in Figure 2：Including be arranged on base by pipeline according to
Air-introduced machine, drum granulating cylinder, rotary drying drum and the hot-blast stove of secondary connection, it is respectively equipped with drum granulating cylinder and rotary drying drum
The first transmission system and the second transmission system for driving it to rotate, drum granulating cylinder and rotary drying drum are inclined at base
On；
Aerating elasticity sulphur parcel component C：Nitrogen heater, high shear agitation including being sequentially connected by pipeline add
Hot device and sulphur packing machine；
Drum granulating cylinder connects ammonium chloride-ureaformaldehyde by pipeline and heats hydrid component, and rotary drying drum is distinguished by pipeline
Connect high shear agitation heater and sulphur packing machine；
Drum granulating cylinder and rotary drying drum are erected on base by multiple carrier tilts, wherein, rotate granulating cylinder
Inclination angle is 1 °~4 ° adjustable, and the inclination angle of rotary drying drum is adjustable for 2 °~3 °；
First transmission system includes the first buncher, the first support roller tumbler for being arranged on drum granulating cylinder and the
One gear drive, the first buncher are connected with first gear transmission device, the first support roller tumbler include first
Swivel becket, the first support roller, first support roller is arranged on the bracket of support drum granulating cylinder, and is connected with the first swivel becket, work
When making, start the first buncher, drive first gear transmission device, so as to drive drum granulating cylinder to rotate；
Second transmission system includes the second buncher, the second support roller tumbler for being arranged on rotary drying drum and the
Two gear drives, the second buncher are connected with second gear transmission device, and the second support roller tumbler includes second turn
Rotating ring, the second support roller, second support roller is arranged on the bracket of support rotary drying drum, and is connected with the second swivel becket, is worked
When, start the second buncher, second gear transmission device is driven, so as to drive rotary drying drum to rotate；
The slanted upper end of drum granulating cylinder is provided with charging aperture, charging aperture connection ammonium chloride-ureaformaldehyde heating hydrid component, enters
Material mouth end also connects air-introduced machine by pipeline；
The inclination lower end of rotary drying drum is provided with discharging opening, and the discharging opening is sequentially connected Screen assemblies and sulphur by pipeline
Packing machine, discharge port end also connect hot-blast stove and high shear agitation heater respectively by pipeline.
Embodiment 2
Utilize a kind of application of the preparation facilities of difunctional slow-release nitrogen fertilizer described in embodiment 1, its technological process such as Fig. 1 institutes
Show, comprise the following steps：
(a) it is 1 to be heated toward urea-formaldehyde and mol ratio is added in polymeric components:1~4.5:1 urea, formaldehyde and auxiliary agent,
60 DEG C~80 DEG C are heated to, liquid urea formaldehyde polymer is made in reactive polymeric；
(b) liquid urea formaldehyde polymer is put into ammonium chloride-ureaformaldehyde heating hydrid component, and is passed through a certain amount of chlorination
Ammonium, described liquid urea formaldehyde polymer quality are the 5%~25% of ammonium chloride dosage, are heated to 70 DEG C~90 DEG C, are stirred,
Obtain mixed material；
(c) by mixed material introduce drum granulating cylinder, by the first buncher adjust regulation drum granulating cylinder rotating speed to
10rpm~60rpm so that mixed material mixing granulation in drum granulating cylinder, delay of the mixed material in drum granulating cylinder
Time be 10 minutes~30 minutes, obtain ammonium chloride-ureaformaldehyde particle, then adjust drum granulating cylinder rotating speed, using gravity and from
Obtained ammonium chloride-ureaformaldehyde particle is moved to rotary drying drum by mental and physical efforts；
(d) rotary drying drum rotating speed is adjusted to 10rpm~20rpm by the second buncher so that move to Rotary drying
Ammonium chloride-ureaformaldehyde particle in cylinder fully contacts with the convection current preheating and drying air being passed through from rotary drying drum discharge port end, chlorine
The drying time for changing ammonium-ureaformaldehyde particle is 10 minutes~20 minutes, then adjusts rotary drying drum rotating speed, utilizes gravity and centrifugation
Dried ammonium chloride-ureaformaldehyde particle is moved to Screen assemblies by power, and ammonium chloride-urea that particle diameter is 2mm~4mm is obtained after screening
Aldehyde core particle；
(e) 230 DEG C are warming up to after sulphur is melted, is added in high shear agitation heater, then sprays into warp thereto
Nitrogen heater is preheated to 230 DEG C of nitrogen and carries out high shear agitation, obtains aerating elasticity sulphur material, and high speed shear is stirred
The waste heat nitrogen mixed in heater is passed through in rotary drying drum as convection current preheating and drying air, dries ammonium chloride-ureaformaldehyde particle；
(f) ammonium chloride made from step (d)-ureaformaldehyde core particle is added in sulphur packing machine, it is warm in sulphur packing machine
Degree is set to 110 DEG C~160 DEG C, is then sprayed into aerating elasticity sulphur material, control aerating elasticity sulphur material and ammonium chloride-ureaformaldehyde
The mol ratio of core particle is 1:30~1:20, ammonium chloride-ureaformaldehyde core particle is wrapped up, that is, obtains outside parcel and carries micro- stomata
Sulfur coating difunctional slow-release nitrogen fertilizer.
Claims (7)
- A kind of 1. preparation facilities of difunctional slow-release nitrogen fertilizer, it is characterised in that including：Material pre-treatment component：Add including the urea-formaldehyde heating polymeric components being composed in series by pipeline and ammonium chloride-ureaformaldehyde Hot mixing part；Drum granulating-drying integrated thermomechanical components：Including be arranged on base (7) the air-introduced machine (8) being sequentially connected by pipeline, Drum granulating cylinder (1), rotary drying drum (2) and hot-blast stove (9), on described drum granulating cylinder (1) and rotary drying drum (2) point The first transmission system and the second transmission system that She You do not drive it to rotate, described drum granulating cylinder (1) and rotary drying drum (2) it is inclined on base (7)；Aerating elasticity sulphur wraps up component：Including nitrogen heater, the high shear agitation heater being sequentially connected by pipeline With sulphur packing machine；Described drum granulating cylinder (1) connects ammonium chloride-ureaformaldehyde by pipeline and heats hydrid component, described rotary drying drum (2) high shear agitation heater and sulphur packing machine are connected respectively by pipeline；Described drum granulating cylinder (1) and rotary drying drum (2) is tilted by multiple brackets (5) to be erected on base (7), its In, the inclination angle of drum granulating cylinder is 1 °~4 °, and the inclination angle of rotary drying drum (2) is 2 °~3 °.
- 2. the preparation facilities of a kind of difunctional slow-release nitrogen fertilizer according to claim 1, it is characterised in that described first passes Dynamic system includes the first buncher (3), the first support roller tumbler (6) and the first tooth being arranged on drum granulating cylinder (1) Wheel transmission device (4), described the first buncher (3) are connected with first gear transmission device (4), and the first described support roller turns Dynamic device (6) includes the first swivel becket, the first support roller, and first support roller is arranged on the bracket (5) of support drum granulating cylinder (1) On, and it is connected with the first swivel becket, during work, starts the first buncher (3), driving first gear transmission device (4), so as to Drum granulating cylinder (1) is driven to rotate；The second described transmission system includes the second buncher (10), the second support roller being arranged on rotary drying drum (2) turns Dynamic device (12) and second gear transmission device (11), described the second buncher (10) and second gear transmission device (11) Connection, the second described support roller tumbler (12) include the second swivel becket, the second support roller, and second support roller is arranged on support rotation Turn on the bracket (5) of drying (2), and be connected with the second swivel becket, during work, start the second buncher (10), driving the Two gear drives (11), so as to drive rotary drying drum (2) to rotate.
- 3. the preparation facilities of a kind of difunctional slow-release nitrogen fertilizer according to claim 1, it is characterised in that described rotary drum is made The slanted upper end of grain cylinder (1) is provided with charging aperture (13), and the charging aperture (13) connection ammonium chloride-ureaformaldehyde heating hydrid component is described Feed inlet end also pass through pipeline connect air-introduced machine (8)；The inclination lower end of described rotary drying drum (2) is provided with discharging opening (14), and the discharging opening (14) is sequentially connected by pipeline Screen assemblies and sulphur packing machine, described discharge port end also connect hot-blast stove (9) and high shear agitation respectively by pipeline Heater.
- A kind of 4. application of the preparation facilities of difunctional slow-release nitrogen fertilizer as described in claims 1 to 3 is any, it is characterised in that Comprise the following steps：(a) it is 1 to be heated toward urea-formaldehyde and mol ratio is added in polymeric components:1~4.5:1 urea, formaldehyde and auxiliary agent, heating To 60 DEG C~80 DEG C, liquid urea formaldehyde polymer is made in reactive polymeric；(b) liquid urea formaldehyde polymer is put into ammonium chloride-ureaformaldehyde heating hydrid component, and is passed through a certain amount of ammonium chloride, institute The liquid urea formaldehyde polymer quality stated is the 5%~25% of ammonium chloride dosage, is heated to 70 DEG C~90 DEG C, is stirred, obtains Mixed material；(c) mixed material is introduced into drum granulating cylinder (1), adjusts drum granulating cylinder (1) rotating speed so that mixed material is made in rotary drum Mixing granulation in grain cylinder (1), obtains ammonium chloride-ureaformaldehyde particle, and it is dry that obtained ammonium chloride-ureaformaldehyde particle then is moved into rotation Dry cylinder (2)；(d) adjust rotary drying drum (2) rotating speed so that the ammonium chloride moved in rotary drying drum (2)-ureaformaldehyde particle with from rotation The convection current preheating and drying air that drying (2) discharge port end is passed through fully contacts, then by dried ammonium chloride-ureaformaldehyde particle Screen assemblies are moved to, ammonium chloride-ureaformaldehyde core particle is obtained after screening；(e) 230 DEG C are warming up to after sulphur is melted, adds in high shear agitation heater, then sprays into thereto through nitrogen Heater is preheated to 230 DEG C of nitrogen and carries out high shear agitation, obtains aerating elasticity sulphur material, and high shear agitation adds Waste heat nitrogen in hot device is passed through in rotary drying drum (2) as convection current preheating and drying air, dries ammonium chloride-ureaformaldehyde particle；(f) ammonium chloride made from step (d)-ureaformaldehyde core particle is added in sulphur packing machine, is then sprayed into aerating elastic sulfur Sulphur material, ammonium chloride-ureaformaldehyde core particle is wrapped up, that is, obtain the difunctional sustained release of sulfur coating of the outside parcel with micro- stomata Nitrogenous fertilizer.
- A kind of 5. application of the preparation facilities of difunctional slow-release nitrogen fertilizer according to claim 4, it is characterised in that step (c) in rotary drum granulating cylinder (1) by the first buncher (3) adjust rotating speed, drum granulating cylinder (1) rotating speed be 10rpm~ 60rpm, the material lagging time in drum granulating cylinder (1) are 10 minutes~30 minutes；Rotary drying drum (2) in step (d) adjusts rotating speed by the second buncher (10), and rotary drying drum (2) rotating speed is 10rpm~20rpm, dry materials time are 10 minutes~20 minutes.
- A kind of 6. application of the preparation facilities of difunctional slow-release nitrogen fertilizer according to claim 4, it is characterised in that step (d) ammonium chloride-ureaformaldehyde core particle diameter that screening obtains in is 2mm~4mm.
- A kind of 7. application of the preparation facilities of difunctional slow-release nitrogen fertilizer according to claim 4, it is characterised in that step (f) mol ratio of aerating elasticity sulphur material and ammonium chloride-ureaformaldehyde core particle is 1 in:30~1:20, parcel temperature is 110 DEG C~160 DEG C.
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| CN1891676A (en) * | 2005-07-08 | 2007-01-10 | 上海化工研究院 | Method for preparing slow-release multielement compound-mixed fertilizer for forest trees |
| CN200981854Y (en) * | 2006-12-19 | 2007-11-28 | 安徽省宁国司尔特化肥有限公司 | Medical fertilizer |
| CN102093143A (en) * | 2009-12-15 | 2011-06-15 | 黑龙江金事达农业科技开发有限公司 | Sustained-release sulfur-containing nitrogen fertilizer |
| CN102910991A (en) * | 2012-09-29 | 2013-02-06 | 湖北富邦科技股份有限公司 | Large-granule sustained-release ammonium chloride fertilizer, preparation method thereof and special granulating sustained-release material |
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