CN108546185A - A kind of method that modified zeolite prepares the device of slow-release nitrogen fertilizer and prepares slow-release nitrogen fertilizer using the device - Google Patents
A kind of method that modified zeolite prepares the device of slow-release nitrogen fertilizer and prepares slow-release nitrogen fertilizer using the device Download PDFInfo
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- CN108546185A CN108546185A CN201810502357.8A CN201810502357A CN108546185A CN 108546185 A CN108546185 A CN 108546185A CN 201810502357 A CN201810502357 A CN 201810502357A CN 108546185 A CN108546185 A CN 108546185A
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- zeolite
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- conveyer belt
- rotary drum
- slow
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical class O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 239000000618 nitrogen fertilizer Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 27
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 112
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 96
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 96
- 239000004202 carbamide Substances 0.000 claims abstract description 96
- 239000010457 zeolite Substances 0.000 claims abstract description 96
- 239000007788 liquid Substances 0.000 claims abstract description 78
- 238000001179 sorption measurement Methods 0.000 claims abstract description 66
- 238000006243 chemical reaction Methods 0.000 claims abstract description 49
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 46
- 238000011049 filling Methods 0.000 claims abstract description 19
- 238000005303 weighing Methods 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 229910001510 metal chloride Inorganic materials 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 64
- 239000000843 powder Substances 0.000 claims description 39
- 238000000889 atomisation Methods 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 34
- 239000000243 solution Substances 0.000 claims description 32
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 21
- 239000011230 binding agent Substances 0.000 claims description 15
- 238000005469 granulation Methods 0.000 claims description 15
- 230000003179 granulation Effects 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 13
- 239000011259 mixed solution Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 239000007858 starting material Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000004375 physisorption Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- JYIBXUUINYLWLR-UHFFFAOYSA-N aluminum;calcium;potassium;silicon;sodium;trihydrate Chemical compound O.O.O.[Na].[Al].[Si].[K].[Ca] JYIBXUUINYLWLR-UHFFFAOYSA-N 0.000 claims description 2
- 229960000892 attapulgite Drugs 0.000 claims description 2
- 229910001603 clinoptilolite Inorganic materials 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 46
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 24
- 239000003337 fertilizer Substances 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 235000015097 nutrients Nutrition 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 6
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 238000005342 ion exchange Methods 0.000 abstract description 2
- 238000013268 sustained release Methods 0.000 abstract description 2
- 239000012730 sustained-release form Substances 0.000 abstract description 2
- 235000013877 carbamide Nutrition 0.000 description 87
- 238000009826 distribution Methods 0.000 description 11
- 229910052680 mordenite Inorganic materials 0.000 description 10
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000013270 controlled release Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 210000002700 urine Anatomy 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
Abstract
A kind of method that modified zeolite prepares the device of slow-release nitrogen fertilizer and prepares slow-release nitrogen fertilizer using the device, belongs to technical field of fertilizer production.The device is formed by connecting by pulverizer, the first conveyer belt, adsorption reaction pond, the first dryer, the second conveyer belt, granulating disc, the second dryer, third conveyer belt, rotary drum fluid-bed, the 4th conveyer belt and weighing sack filling machine.Using the device of the invention using ammonia, liquid area as nitrogen source, metal chloride solutions modification is carried out to natural zeolite first, it is significantly increased to N2 adsorption performance, made in ammonia and urea uniform adsorption to the microcellular structure of modified zeolite and surface by vacuumizing, modified zeolite and nitrogen source absorption are close, are conducive to the sustained release performance for giving full play to zeolite slow-release nitrogen fertilizer；Simultaneously because zeolite has higher ion exchange and absorption property, nitrogen nutrient extra in soil can be adsorbed on around zeolite lattice, reduce loss of soil nutrient, improve the utilization ratio of nitrogenous fertilizer, effectively reduce agricultural pollution.
Description
Technical field
The invention belongs to technical field of fertilizer production, and in particular to modified zeolite prepares the device of slow-release nitrogen fertilizer and utilizes and is somebody's turn to do
The method that device prepares slow-release nitrogen fertilizer.
Background technology
China's fertilizer amount is big（About 60,000,000 tons, account for world's total amount 1/3）, but utilization rate of fertilizer is relatively low（About 30%, it is Europe
The 1/2 of man of the U.S.）, agricultural non-point source pollution and resource environmental pressure is caused to increasingly sharpen.Recent studies suggest that research and development it is novel it is slow/
Controlled Release Fertilizer makes its nutrient release rate absorb basic synchronization with crop nutrition content, can greatly improve utilization rate of fertilizer, reduces agricultural
Pollution of area source meets National Sustainable Development Strategies requirement, but novel coating slowly/controlled releasing fertilizer, such as sulfur coated urea, coated with resin
That there are coated fertilizer costs is higher for urea and the double coated carbamides of sulphur resin etc., prilling is complicated, environmental factor supports fertilizer
Point rate of release such as is affected at the factors, limits its large-scale application in agricultural production.
Based on zeolite because having good absorption and cation exchange property to N, K, P, it has been found that made using zeolite
For the carrier and controlled-release material conditioner of fertilizer, the release of nutrient in fertilizer is can control, improves utilization rate of fertilizer.But current people
Zeolite is mixed application with chemical fertilizer mostly, or compound fertilizer is made with it or the zeolite that ammonium is saturated directly is manured into soil, this
The use of a little methods achievees the purpose that prevent fertilizer loss to a certain extent, and can improve soil function, significantly reduces agricultural
Planting cost.But these researchs are all to rest on using zeolite as matrix, do not give full play to zeolite as slow-release material
Effect, and natural zeolite is limited to the absorption property of ion, also limits its fertilizer industry and melts hair.
Invention content
For the problems such as current slow/controlled release fertilizer preparation process is complicated, cost is higher, the purpose of the present invention is overcome existing skill
The deficiency of art is provided a kind of modified zeolite and prepares the device of slow-release nitrogen fertilizer and the skill of the method that is prepared slow-release nitrogen fertilizer using the device
Art scheme.
A kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that by pulverizer, the first conveyer belt, inhales
Reaction enclosure pond, the first dryer, the second conveyer belt, granulating disc, the second dryer, third conveyer belt, it is rotary drum fluid-bed,
Four conveyer belts and weighing sack filling machine are formed by connecting.
A kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that the adsorption reaction pond upper end is set
There are reaction tank feed inlet, middle part to be equipped with stirrer gear, lower end equipped with reaction tank discharge port.
A kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that part on the granulating disc
It She You not modified zeolite feed inlet and binder feed inlet.
A kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that the pulverizer discharge end connection
First conveyer belt, the reaction tank feed inlet in the described first transmission end of tape connection adsorption reaction pond, the adsorption reaction pond
Reaction tank discharge port connect the first dryer, the first dryer discharge end connect the second conveyer belt front end, it is described
Second transmission end of tape clutch disk comminutor, the granulating disc discharge end the second dryer of connection, described second
Dryer discharge end connects third conveyer belt, and the third transmits end of tape and connects rotary drum fluid-bed, described rotary drum fluidisation
Bed discharge end connects the 4th conveyer belt, and the described the 4th transmission end of tape connection weighs sack filling machine.
A kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that it is described it is rotary drum fluid-bed be closed
Space, it is described rotary drum fluid-bed to be equipped with that the first control switchs, the second control switch, third control switch, the 4th control are opened
It closes and the 5th control switchs, the described first control switch control connection ammonia gas generating device, the described second control switch control
System connection urea liquid spray equipment, third control switch, which controls, connects rotary drum fluid-bed feed inlet, and the described the 4th
The blower device of control switch connect band heating function, the described the 5th control switch control connection vacuum pump, the ammonia
Generating means, urea liquid spray equipment, blower device and vacuum pump are arranged on rotary drum fluid-bed.
The method that the device that slow-release nitrogen fertilizer is prepared using modified zeolite prepares slow-release nitrogen fertilizer, it is characterised in that including
Following steps：
1) in natural zeolite through pulverizer mechanical crushing, sieve with 100 mesh sieve after through the first conveyer belt enter adsorption reaction pond, quality
The reacted pond feed inlet of copper chloride solution that score is 15% enters adsorption reaction pond, and the mass ratio of zeolite and copper chloride solution is
1:7-10, mixed solution stand 2 hours after the stirrer gear stirring at normal temperature 6h in adsorption reaction pond, repeat this process 3 times, removal
Zeolite is precipitated after supernatant and is prepared into metal chloride modified zeolite powder through the first drying machine drying；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth and binder feed inlet after machine metering and turns to be granulated in disk grain machine；
3) zeolite granular of above-mentioned granulating and forming through the second dryer, third conveyer belt be sent to it is closed it is rotary drum fluid-bed after, it is first
First, it closes third and controls switch seal feed inlet, open the first control switch and start ammonia gas generating device, generate ammonia through high pressure
Spray gun sprays into rotary drum fluid-bed, inside ammonia uniform adsorption to molding zeolite granular and surface, closes the first control switch；
Then, it opens the 5th control switch startup vacuum pump to vacuumize rotary drum fluid-bed, 2.5-4.0 parts of urea is dissolved in 1 part 70
DEG C water in, be sufficiently stirred mixing, and open the second control switch, above-mentioned urea liquid be sprayed onto through urea liquid spray equipment
In rotary drum fluid-bed, atomization urea liquid is adsorbed on zeolite granular surface and inside through physisorption；Finally, second is closed
Control switch, the 5th control switch, are opened the 4th control switch, are removed to rotary drum fluid-bed interior drum with hot wind by blower device
Degranulation surface moisture is transported to weighing sack filling machine after, screening cooling through the 4th conveyer belt, and slow-release nitrogen is made in bag distribution packaging after weighing
Fertilizer.
The method, it is characterised in that the natural zeolite is in the natural zeolite powders such as modenite, clinoptilolite
One or two kinds of mixtures；The granulation aid is one or more mixtures in montmorillonite, kaolin and attapulgite.
The method, it is characterised in that the step 3）The rotary drum fluid-bed ammonia concentration of middle control is 280-320
Mg/L, high pressure air rifle pressure are 0.4-0.6MPa, ammonia gas absorption time 10-15 min.
The method, it is characterised in that the step 3）Middle urea liquid is noted after the atomization of urea liquid spray equipment
In fluidized bed, urea liquid spray equipment sprays speed 60-80 ml/min, atomization adsorption time 10-15 min.
Apparatus of the present invention reasonable design, making is simple at low cost, highly practical.Using apparatus of the present invention with ammonia, liquid
Urea is nitrogen source, carries out metal chloride solutions modification to natural zeolite first, significantly increases it to N2 adsorption performance, pass through pumping
Vacuum makes in ammonia and urea uniform adsorption to the microcellular structure of modified zeolite and surface, and modified zeolite and nitrogen source absorption are close,
Be conducive to give full play to the sustained release performance of zeolite slow-release nitrogen fertilizer；Simultaneously because zeolite has higher ion exchange and adsorptivity
Can, nitrogen nutrient extra in soil can be adsorbed on around zeolite lattice, reduce loss of soil nutrient, improve the utilization of nitrogenous fertilizer
Efficiency effectively reduces agricultural pollution.
Description of the drawings
Fig. 1 is apparatus of the present invention structural schematic diagram；
Fig. 2 is rotary drum fluidized-bed structure schematic diagram in the present invention.
Specific implementation mode
The present invention is further described in conjunction with the accompanying drawings and embodiments.
Embodiment 1
Referring to Fig. 1 and 2, the device of slow-release nitrogen fertilizer is prepared based on natural zeolite, by pulverizer 1, the first conveyer belt 2, adsorption reaction
Pond 3, the first dryer 4, the second conveyer belt 5, granulating disc 6, the second dryer 7, third conveyer belt 8, it is rotary drum fluid-bed 9,
4th conveyer belt 10, weighing sack filling machine 11 are formed by connecting.
Wherein 3 upper end of adsorption reaction pond is equipped with reaction tank feed inlet 2, middle part is equipped with stirrer gear 13, lower end is equipped with reaction tank
Discharge port 14.6 top of granulating disc is respectively provided with modified zeolite feed inlet 15 and binder feed inlet 16.Rotary drum fluid-bed 9
It is equipped with the first control control of switch 171, second switch 172, third control switch the 173, the 4th controls switch 174 and the 5th and controls
Switch 175 is made, the first control control of switch 171 connects ammonia gas generating device 19, and the second control control connection urea of switch 172 is molten
Liquid spray equipment 20, third control the control of switch 173 and connect rotary drum fluid-bed feed inlet 18, the 4th control 174 connect band of switch
The blower device 21 of heating function, the 5th control control connection vacuum pump 22 of switch 175, above-mentioned ammonia gas generating device 19, urine
Plain solution spraying device 20, blower device 21 and vacuum pump 22 are arranged on rotary drum fluid-bed 9.
Specifically connection structure is：1 discharge end of pulverizer connects the first conveyer belt 2, the connection absorption of 2 end of the first conveyer belt
The reaction tank feed inlet 12 of reaction tank 3, first dryer 4 of connection of reaction tank discharge port 14 in adsorption reaction pond 3, described first
4 discharge end of dryer connects 5 front end of the second conveyer belt, and 5 end clutch disk comminutor 6 of the second conveyer belt, granulating disc 6 goes out
Expect that end connects the second dryer 7,7 discharge end of the second dryer connects third conveyer belt 8, and 8 end of third conveyer belt connects rotary drum
Fluid bed 9, rotary drum fluid-bed 9 discharge end connect the 4th conveyer belt 10, and the connection of 10 end of the 4th conveyer belt weighs sack filling machine 11.
Device involved in the present invention is the improvement of prior-art devices or existing apparatus.
Application of 2 apparatus of the present invention of embodiment in preparing zeolite base slow-release nitrogen fertilizer
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7-10, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution,
It repeats this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is sent to closed rotary drum fluid-bed 9 through the second dryer 7, third conveyer belt 8
Afterwards, first, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device of 171 start or stop
19, it generates ammonia and is sprayed into rotary drum fluid-bed 9 through high-pressure spray gun, ammonia uniform adsorption to molding zeolite granular inside and table
The first control switch 171 is closed in face；Then, the 5th control startup vacuum pump 22 of switch 15 is opened to take out rotary drum fluid-bed 9 very
2.5-4.0 parts of urea are dissolved in 1 part 70 DEG C of water by sky, are sufficiently stirred mixing, and open the second control switch 172, will be upper
It states urea liquid to be sprayed onto in rotary drum fluid-bed 9 through urea liquid spray equipment 20, atomization urea liquid is inhaled through physisorption
It is attached to zeolite granular surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control
Switch 174 removes degranulation surface moisture, through the 4th conveyer belt 10 to drum in rotary drum fluid-bed 9 by blower device 21 with hot wind
It is transported to after cooling, screening and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
Ammonia concentration is 280-320 mg/L in controlling rotary drum fluid-bed 9 in above-mentioned steps, and high pressure air rifle pressure is 0.4-
0.6MPa, ammonia gas absorption time 10-15 min.
Urea liquid injects after the atomization of urea liquid spray equipment 20 in rotary drum fluid-bed 9 in above-mentioned steps, and urea is molten
Liquid spray equipment 20 sprays fast 60-80 ml/min, atomization adsorption time 10-15 min.
Embodiment 3
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the copper chloride solution that mass fraction is 15% enters adsorption reaction pond 3, boiling through feed inlet 12
The mass ratio of stone and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, repeats this mistake
Journey 3 times, remove supernatant after by zeolite precipitation through the first dryer 4 drying be prepared into metal chloride modified zeolite powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is sent to closed rotary drum fluid-bed 9 through the second dryer 7, third conveyer belt 8
Afterwards, first, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device of 171 start or stop
19, it generates ammonia and is sprayed into rotary drum fluid-bed 9 through high-pressure spray gun, ammonia uniform adsorption to molding zeolite granular inside and table
The first control switch 171 is closed in face；Then, the 5th control startup vacuum pump 22 of switch 15 is opened to take out rotary drum fluid-bed 9 very
2.5 parts of urea are dissolved in 1 part 70 DEG C of water by sky, are sufficiently stirred mixing, and open the second control switch 172, by above-mentioned urine
Plain solution is through urea liquid spray equipment 20（High pressure nozzle）It is sprayed onto in rotary drum fluid-bed 9, atomization urea liquid is through physical absorption
Effect is adsorbed on zeolite granular surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, opening the
Four control switches 174 remove degranulation surface moisture with hot wind to drum in rotary drum fluid-bed 9 by blower device 21, are passed through the 4th
It is transported to weighing sack filling machine 11 after sending the cooling of band 10, screening, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
Ammonia concentration is 280 mg/L in controlling rotary drum fluid-bed 9 in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, ammonia
10 min of gas adsorption time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 4
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 10, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is sent to closed rotary drum fluid-bed 9 through the second dryer 7, third conveyer belt 8
Afterwards, first, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device of 171 start or stop
19, it generates ammonia and is sprayed into rotary drum fluid-bed 9 through high-pressure spray gun, ammonia uniform adsorption to molding zeolite granular inside and table
The first control switch 171 is closed in face；Then, the 5th control startup vacuum pump 22 of switch 15 is opened to take out rotary drum fluid-bed 9 very
2.5 parts of urea are dissolved in 1 part 70 DEG C of water by sky, are sufficiently stirred mixing, and open the second control switch 172, by above-mentioned urine
Plain solution is sprayed onto through urea liquid spray equipment 20 in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on through physisorption
Zeolite granular surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch
174, degranulation surface moisture is removed with hot wind to drum in rotary drum fluid-bed 9 by blower device 21, it is cold through the 4th conveyer belt 10
But it is transported to after, sieving and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 280 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, and ammonia is inhaled
10 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 5
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 2.5
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 280 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.6MPa, and ammonia is inhaled
15 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 80 ml/min of speed, 15 min of atomization adsorption time.
Embodiment 6
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 2.5
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 320 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, and ammonia is inhaled
10 min of attached time.
Urea liquid spray equipment 20 injects after high-pressure nozzle atomizing in fluid bed in above-mentioned steps, urea liquid spraying
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 7
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 10, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 2.5
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
Ammonia concentration is 320 mg/L in application control fluid bed in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, ammonia
10 min of gas adsorption time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 8
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 2.5
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 320 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.6MPa, and ammonia is inhaled
15 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 80 ml/min of speed, 15 min of atomization adsorption time.
Embodiment 9
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 4.0
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 280 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, and ammonia is inhaled
10 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 10
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 10, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 4.0
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 280 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.4MPa, and ammonia is inhaled
10 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 60 ml/min of speed, 10 min of atomization adsorption time.
Embodiment 11
1) natural mordenite zeolite, clinoptilolite mass ratio 1:1 mixing, through 1 mechanical crushing of pulverizer, sieve with 100 mesh sieve after through first
Conveyer belt 2 enters adsorption reaction pond 3, and the reacted pond feed inlet 12 of copper chloride solution that mass fraction is 15% enters adsorption reaction
The mass ratio of pond 3, zeolite and copper chloride solution is 1:2 hours are stood after 7, the agitated 13 stirring at normal temperature 6h of tooth of mixed solution, weight
It answers this process 3 times, zeolite precipitation is prepared into metal chloride modified zeolite through the drying of the first dryer 4 after removal supernatant
Powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth 15 and binder feed inlet 16 after machine metering and turns to be granulated in disk grain machine 6；
3) zeolite granular of above-mentioned granulating and forming is after the second dryer 7, third conveyer belt 8 are sent to closed rotary drum fluid-bed 9,
First, it closes third and controls 173 sealed feed inlet 18 of switch, open the first control and open the dynamic ammonia gas generating device 19 of 171 start or stop, production
Ammonifying gas is sprayed into through high-pressure spray gun in rotary drum fluid-bed 9, and inside ammonia uniform adsorption to molding zeolite granular and surface is closed
First control switch 171；Then, it opens the 5th control startup vacuum pump 22 of switch 15 to vacuumize rotary drum fluid-bed 9, by 4.0
Part urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and opens the second control switch 172, and above-mentioned urea liquid is passed through
Urea liquid spray equipment 20 is sprayed onto in rotary drum fluid-bed 9, and atomization urea liquid is adsorbed on zeolite granular through physisorption
Surface and inside；Finally, it closes the second control switch the 172, the 5th and controls switch 175, open the 4th control switch 174, pass through
Blower device 21, with hot wind, removes degranulation surface moisture to drum in rotary drum fluid-bed 9, after the cooling of the 4th conveyer belt 10, screening
It is transported to and weighs sack filling machine 11, slow-release nitrogen fertilizer is made in bag distribution packaging after weighing.
It is 280 mg/L that ammonia concentration in fluid bed is controlled in above-mentioned steps, and high pressure air rifle pressure is 0.6MPa, and ammonia is inhaled
15 min of attached time.
After the atomization of urea liquid spray equipment 20 in injection fluid bed, urea liquid sprays urea liquid in above-mentioned steps
Device 20 sprays 80 ml/min of speed, 15 min of atomization adsorption time.
Blank example 1
Using the common urea that nitrogen content is 46% as blank example 1.
Blank example 2
Natural zeolite powder raw material same as the previously described embodiments is taken, is prepared as stated above through granulation, ammonia, urea liquid absorption
Unmodified zeolite nitrogenous fertilizer；
Ammonia concentration is 280 mg/L in the application control fluid bed, and high pressure air rifle pressure is 0.4MPa, when ammonia gas absorption
Between 10 min.
The urea liquid injects after high-pressure nozzle atomizing in fluid bed, and high pressure nozzle sprays 60 ml/min of speed, atomization
10 min of adsorption time.Compare the nitrogen loss of its blank example 1, blank example 2 and the slow-release nitrogen fertilizer of above-described embodiment 3-11 preparations
Amount：Slow release fertilizer nutrient release rate is detected using water dissolution rate method as defined in national standard " GB/T 23348-2009 ", specifically
For：It is 150 μm to weigh the fertiliser granulates that 10g is not crushed and be put into aperture（100 mesh）The pouch made of nylon gauze in, sealing
Afterwards, pouch is put into 250 ml vials or plastic bottle, 200ml water is added, seals, be placed in 25 DEG C of biochemical constant temperature training
It supports and is cultivated in case, nitrogen released rate is measured by sampling.Sample time is 1d, 3d, 5d, 7d, 14d, 28d, 42d, 56d, 70d, is tired out
Product nutrient release rate measures the nitrogen content of leaching liquor using " Kjeldahl's method ", with obtained slow-release nitrogen fertilizer up to until 80% or more
The slow-release capability of slow-release nitrogen fertilizer is characterized in the ability of control fertilizer nitrogen loss, the results are shown in Table 1.
Table 1：The Nitrogen Accumulation release rate of slow-release nitrogen fertilizer in different embodiments（%）
As it can be seen from table 1 the nitrogen slow-release capability of slow-release nitrogen fertilizer prepared by embodiment 3-11 is substantially better than blank example 1 and blank
Example 2, Nitrogen Accumulation release rate in the period of all samplings in be substantially less than reference examples Nitrogen Accumulation release rate.Blank example
1 and blank example 2,28 days Nitrogen Accumulation release rates are more than 70% before urea and unmodified zeolite nitrogenous fertilizer, are far above embodiment 3-11
In 29.5-48.3%；And in 28-70d, cumulative release nitrogen accounts for the ratio of fertilizer total nitrogen and is up to 30% in embodiment 3-11, table
Slow-release nitrogen fertilizer prepared by bright modified zeolite has good slow release effect, and greatly improving crop needs releasing for nitrogen peak period nitrogen
It puts.Meanwhile compared with embodiment 3-7, urea solution mass score can significantly reduce Nitrogen Accumulation and release in increase embodiment 9-11
Rate is put, also indicates that modified zeolite slow-release nitrogen fertilizer has higher slow release effect.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of modified zeolite prepares the device of slow-release nitrogen fertilizer, it is characterised in that by pulverizer (1), the first conveyer belt (2), absorption
Reaction tank (3), the first dryer (4), the second conveyer belt (5), granulating disc (6), the second dryer (7), third conveyer belt
(8), rotary drum fluid-bed (9), the 4th conveyer belt (10) and weighing sack filling machine (11) are formed by connecting.
2. a kind of modified zeolite as described in claim 1 prepares the device of slow-release nitrogen fertilizer, it is characterised in that the absorption is anti-
Ying Chi (3) upper end is equipped with reaction tank feed inlet (12), middle part is equipped with stirrer gear (13), lower end is equipped with reaction tank discharge port (14).
3. a kind of modified zeolite as described in claim 1 prepares the device of slow-release nitrogen fertilizer, it is characterised in that the disk is made
Grain machine (6) top is respectively equipped with modified zeolite feed inlet (15) and binder feed inlet (16).
4. a kind of modified zeolite as described in claim 1 prepares the device of slow-release nitrogen fertilizer, it is characterised in that the pulverizer
(1) discharge end connects the first conveyer belt (2), and described the first conveyer belt (2) end connects adsorption reaction pond（3）Reaction tank into
Material mouth (12), the adsorption reaction pond（3）Reaction tank discharge port (14) connect the first dryer（4）, described first dries
Dry machine（4）Discharge end connection the second conveyer belt (5) front end, described the second conveyer belt (5) the end clutch disk comminutor (6),
Described granulating disc (6) discharge end connects the second dryer (7), and described the second dryer (7) discharge end connects third
Conveyer belt (8), described third conveyer belt (8) end connect rotary drum fluid-bed (9), rotary drum fluid-bed (9) discharge end
The 4th conveyer belt (10) is connected, the 4th described conveyer belt (10) end connection weighs sack filling machine (11).
5. a kind of modified zeolite as described in claim 1 prepares the device of slow-release nitrogen fertilizer, it is characterised in that the rotary drum stream
It is confined space to change bed (9), and described rotary drum fluid-bed (9) are equipped with the first control and switch（171), the second control switch
(172), third control switch（173）, the 4th control switch（174）With the 5th control switch（175）, described first control opens
It closes（171) control connection ammonia gas generating device (19), the described second control switch (172) control connection urea liquid spraying dress
It sets (20), third control switch (173) control connects rotary drum fluid-bed feed inlet (18), and the described the 4th control is opened
Close the blower device (21) of (174) connect band heating function, the described the 5th control switch (175) control connection vacuum pump
（22）, ammonia gas generating device (19), urea liquid spray equipment (20), blower device (21) and the vacuum pump（22）It is all provided with
It sets on rotary drum fluid-bed (9).
6. the method for preparing slow-release nitrogen fertilizer using device described in claim 1, it is characterised in that include the following steps：
1) in natural zeolite through pulverizer (1) mechanical crushing, sieve with 100 mesh sieve after through the first conveyer belt (2) enter adsorption reaction pond
(3), the reacted pond feed inlet (12) of copper chloride solution that mass fraction is 15% enters adsorption reaction pond (3), zeolite and copper chloride
The mass ratio of solution is 1:7-10, it is small that mixed solution stands 2 after stirrer gear (13) stirring at normal temperature 6h in adsorption reaction pond (3)
When, repeat this process 3 times, zeolite precipitation is prepared into metal chloride through the first dryer (4) drying after removal supernatant changes
Property zeolite powder；
2) by above-mentioned modified zeolite powder and the granulation aid powder in mass ratio 85 sieved with 100 mesh sieve:15 ratio mixing, through micro-
It is put into respectively through zeolite starting material mouth (15) and binder feed inlet (16) after machine metering and turns to be granulated in disk grain machine (6)；
3) zeolite granular of above-mentioned granulating and forming is sent to closed rotary drum through the second dryer (7), third conveyer belt (8) and fluidizes
Bed（9）Afterwards, first, third control switch (173) sealed feed inlet (18) is closed, the first control of opening opens (171) start or stop and moves ammonia
It is rotary drum fluid-bed through high-pressure spray gun penetrating to generate ammonia for gas generating means (19)（9）It is interior, ammonia uniform adsorption to molding zeolite
The first control switch (171) is closed on inside particle and surface；Then, it opens the 5th control switch (15) and starts vacuum pump（22）
It will be rotary drum fluid-bed（9）It vacuumizes, 2.5-4.0 parts of urea is dissolved in 1 part 70 DEG C of water, is sufficiently stirred mixing, and open
Second control switch (172), above-mentioned urea liquid is sprayed onto through urea liquid spray equipment (20) rotary drum fluid-bed（9）It is interior, mist
Change urea liquid and is adsorbed on zeolite granular surface and inside through physisorption；Finally, close second control switch (172),
5th control switch (175) opens the 4th control switch (174), by blower device (21) to rotary drum fluid-bed（9）Interior drum with
Hot wind removes degranulation surface moisture, is transported to after, screening cooling through the 4th conveyer belt (10) and weighs sack filling machine (11), divided after weighing
Slow-release nitrogen fertilizer is made in bag packaging.
7. method as claimed in claim 6, it is characterised in that the natural zeolite is that modenite, clinoptilolite etc. are natural
One or both of zeolite powder mixture；The granulation aid is one kind or more in montmorillonite, kaolin and attapulgite
Kind mixture.
8. method as claimed in claim 6, it is characterised in that the step 3）Middle control is rotary drum fluid-bed（9）Ammonia it is dense
Degree is 280-320 mg/L, and high pressure air rifle pressure is 0.4-0.6MPa, ammonia gas absorption time 10-15 min.
9. method as claimed in claim 6, it is characterised in that the step 3）Middle urea liquid is sprayed through urea liquid and is filled
It is injected in fluid bed after setting (20) atomization, urea liquid spray equipment (20) sprays speed 60-80 ml/min, atomization adsorption time 10-
15 min。
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| CN109467489A (en) * | 2018-11-23 | 2019-03-15 | 沈阳农业大学 | A kind of rice field ammonia volatilization discharge-reducing method based on clinoptilolite |
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| CN105777453A (en) * | 2016-02-29 | 2016-07-20 | 浙江大学 | Device for preparing biochar-based controlled-release nitrogen fertilizer and application |
| CN106146087A (en) * | 2016-06-28 | 2016-11-23 | 安徽金联地矿科技有限公司 | A kind of preparation method of the attapulgite mixed fertilizer with slow release effect |
| CN107265476A (en) * | 2017-07-18 | 2017-10-20 | 大悟县新生农业科技有限公司 | A kind of preparation method of the zeolite little particle type slow release nitrogen fertilizers of ZMS 5 |
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