CN103420699B - Device for preparing sulfur-based compound fertilizer - Google Patents
Device for preparing sulfur-based compound fertilizer Download PDFInfo
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- CN103420699B CN103420699B CN201310329710.4A CN201310329710A CN103420699B CN 103420699 B CN103420699 B CN 103420699B CN 201310329710 A CN201310329710 A CN 201310329710A CN 103420699 B CN103420699 B CN 103420699B
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Abstract
The invention discloses a device for preparing sulfur-based compound fertilizer, which comprises a mixing agitator used for uniformly mixing and stirring raw materials, a crusher used for smashing large caking material uniformly mixed and stirred, and arranged above a granulating machine, the granulating machine used for granulating material uniformly stirred and smashed, a slurry distributor used for spraying slurry on a material bed of the granulating machine, a dryer connected with the granulating machine and used for drying granulated material produced by the granulating machine, a preneutralization tail material washing machine used for preparing preneutralization slurry to be sent to the slurry distributor, a urea spraying cylinder for supplying nitrogen to finished particles at a delivering part of the dryer, and a sieving machine connected with the dryer through a conveyor belt and used for screening the nitrogen added finished particles. According to the invention, the product quality is stable, the particles are uniform, the operation rate of the device is stabilized to be more than 98 %, the ammonia yield coefficient achieves 99 %, the potassium yield coefficient achieves 99.9 %, meanwhile no sewage is discharged, and the clean production is realized.
Description
Technical field
The present invention relates to composite heat transfer technical field, particularly relate to a kind of Unit for Production of Sulfate-Based Compound Fertilizers.
Background technology
Existing production of sulfur-based compound fertilizer technique is generally directly introduced potassium nutrition with commodity potassium sulfate and is produced sulfur ternary composite fertilizer, and production cost is higher, and product nutrient is unbalanced.In order to overcome above-mentioned shortcoming, develop and produce the production technique of S-based compound fertilizer by kcl low temperature conversion method: add conversion tank through the solid potassium chloride of accurate-metering and the vitriol oil, carry out conversion reaction in a heated state, the KHSO4 solution overflow generated enters nitration mixture groove, the phosphoric acid washing liquid of the dry washing procedure generation of NPK is allocated at this, the nitration mixture pumping formed enters pre-neutralization groove, through logical ammonia neutralization reaction (degree of neutralization 0.6 ~ 0.8), generate pre-neutralization NPK slip, granulation tubular reactor is entered through pumping, lead to ammonia further at this and complete neutralization reaction (degree of neutralization 1.6 ~ 1.8), on the material bed that the NPK slip reacted completely is rolled at tablets press by nozzles spray, through coating, bonding and a small amount of from granulating, (general particle consists of 2 ~ 4mm and accounts for 50 ~ 70% the NPK solid materials generated, ﹥ 4mm10 ~ 25%, ﹤ 2mm10 ~ 20%, moisture 4 ~ 6%), drying (moisture be down to 2% once), two-stage is sieved, get finished particle and mend nitrogen through spray urine cylinder successively, after parcel cylinder parcel oil-bound distemper coating, fine screen is sieved, 2 ~ 4mm finished product sends to packaging.Deliver to tablets press as returning charge after the fine powder of the fine particle of screening, broken macroparticle, dedusting and part finished product mix and do masterbatch.What granulation process and drying process produced contains ammonia, NPK dust tail gas through whirlwind dry method dust, two-stage Venturi and the wet scrubbing of one-level washing tower, tail gas qualified discharge.
But this production technique production capacity is not high, and daily output can only reach 300t, and nutrient fluctuation is large, and product pellet outward appearance is poor, and system driving rate is lower, blocking is frequent, and cleaning work amount is large, and production environment is severe, urgently improves.
Summary of the invention
For prior art Problems existing, the object of the invention is to propose a kind of Unit for Production of Sulfate-Based Compound Fertilizers, to improve production capacity, balanced nutrient, improves production environment.
A kind of Unit for Production of Sulfate-Based Compound Fertilizers, comprising: mixing and blending machine, crusher, tablets press, slip device for distributing, drying machine, pre-neutralization tail wash machine, spray urine cylinder and sieve apparatus;
Described mixing and blending machine, for by raw material mixing and stirring;
Described crusher, for receiving the material stirred of described mixing and blending machine conveying, pulverizes the material bulk of mixing and stirring caking; And described crusher is arranged in above described tablets press, after broken, material directly enters described tablets press;
Described tablets press, for carrying out granulation by the material after stirring, crushing;
Described slip device for distributing, for starching to material spray on the material bed of described tablets press;
Described drying machine, is connected with described tablets press by transport tape, the granulating dry materials generated for making tablets press;
Described pre-neutralization tail washes machine, for generating pre-neutralization slip, delivers to described slip device for distributing;
Described spray urine cylinder, mends nitrogen to the finished particle of described drying machine conveying place;
Described sieve apparatus, is connected with described drying machine by transport tape, sieves the finished particle after mending nitrogen.
Preferably, described tablets press inner shield ring height is 350 ~ 480mm.
Preferably, in described tablets press, granulation zone accounts for 6000 ~ 7500mm, and polishing area accounts for 1500 ~ 3000mm.
Preferably, described drying machine afterbody increases trommel screen.
Preferably, described pre-neutralization tail is washed machine and is set up hot wash device.
Preferably, described pre-neutralization tail is washed machine and is set up displacement pipeline, for when washings proportion is too high or degree of neutralization is higher, make washings return tank field storage by pumping, and supplementary dilute phosphoric acid is replaced simultaneously.
Preferably, in described spray urine cylinder, two collets increase 50 ~ 120mm respectively.
Preferably, described crusher is chain type pulverizer.
Preferably, described tablets press is rotary drum granulator, pair roller Squeezinggranulator or granulating disc.
Preferably, described mixing and blending machine is horizontal mixer or pan mixer.
In the present invention, constant product quality, uniform particle, device driving rate is stabilized in more than 98%, and ammonia yield reaches 99%, potassium yield reaches 99.9%, does not have sewage discharge simultaneously, achieves cleaner production.
Accompanying drawing explanation
Fig. 1 is a kind of Unit for Production of Sulfate-Based Compound Fertilizers structure iron in the embodiment of the present invention.
10, mixing and blending machine; 20, crusher; 30, tablets press; 40, slip device for distributing; 50, drying machine; 60, spray urine cylinder; 70, sieve apparatus; 80, pre-neutralization tail washes machine.
Embodiment
Embodiments provide a kind of Unit for Production of Sulfate-Based Compound Fertilizers, as shown in Figure 1, comprising: mixing and blending machine 10, crusher 20, tablets press 30, slip device for distributing 40, drying machine 50, pre-neutralization tail wash machine 80, spray urine cylinder 60 and sieve apparatus 70.Wherein, described mixing and blending machine 10, for by raw material mixing and stirring, wherein, raw material generally can select urea, ammonium nitrate, ammonium chloride, sulphur ammonium, phosphorus ammonium, Repone K (potassium sulfate) etc. to be equipped with by a certain percentage, the raw material stirring prepared evenly can be improved the even fertilizer efficiency content of fertiliser granulates entirety; Described crusher 20, for receiving the material stirred of described mixing and blending machine 10 conveying, pulverizes the material bulk of mixing and stirring caking; And described crusher 20 is arranged in above described tablets press 30, after broken, material directly enters described tablets press 30; Described tablets press 30, for carrying out granulation by the material after stirring, crushing; Described slip device for distributing 40, material spray slurry on the material bed to described tablets press 30; Described drying machine 50, is connected with described tablets press 30 by transport tape, the granulating dry materials generated for making tablets press 30; Described pre-neutralization tail washes machine 80, for generating pre-neutralization slip, delivers to described slip device for distributing 40; Described spray urine cylinder 60, mends nitrogen to the finished particle of described drying machine 50 conveying place; Described sieve apparatus 70, is connected with described drying machine 50 by transport tape, sieves the finished particle after mending nitrogen, screening pellet product, and underproof particle returns the reprocessing of mix and blend link; Qualified product is carried out be coated with brightness and the roundness degree that clothing coating increases particle, make appearance more beautiful, generally carry out coating with coating machine; Finished particle quantitative package: the particle i.e. the finished particle that wrapped film are temporarily stored by rotary conveyor feeding feed bin, then connect the automatic quantitative packing such as electronic quantitative packing scale, sack closer envelope, place ventilation and preserve.
In the embodiment of the present invention, raised by crusher location-appropriate, can be arranged in above tablets press, after broken, material directly enters tablets press; Avoid existing scheme crusher to arrange, large grain enters returning charge bucket and carries after fragmentation, causes bucket elevator frequently to scab blocking, causes the problem that driving rate is on the low side; , there is not the latch up phenomenon that scabs in bucket elevator operational excellence after transformation, driving rate improves 3 ~ 5%.
In the embodiment of the present invention, tablets press back-up ring height, by 280mm, is increased to 350 ~ 480mm.Tablets press subregion adjusts, and is shifted by back-up ring, accounts for 8000mm, polishing area accounts for 1000mm by granulation zone, be adjusted to that granulation zone accounts for 6000 ~ 7500mm, polishing area accounts for 1500 ~ 3000mm.After transformation, packing factor is by 8%, and be increased to about 15 ~ 25%, throughput significantly improves, and daily output can be stabilized in 390 ~ 430 tons.
In the embodiment of the present invention, for sulfenyl nitrogen-phosphorus-potassium slip character, design specialized shower nozzle, and be applied to production, slip sprays evenly, and granulating is obviously effect improved, and particle is more even.
In the embodiment of the present invention, drying machine guide flight is optimized, greatly reduces head and leak material situation; Drying machine afterbody increase trommel screen, material drying is separated in advance, avoid bulk fall into dry bucket carry after cause equipment and elephant trunk blocking.
In the embodiment of the present invention, increase ammonia jet pipe by pre-neutralization groove, neutralization reaction equilibrium is carried out, and stabilizes slip degree of neutralization; Tail is washed into the adjustment of phosphoric acid pipeline location, and increases hot wash device, and pipeline scale slows down, conduit running cycle stretch-out; Tail washes washings increases displacement pipeline, if when washings proportion is too high or degree of neutralization is higher, then washings returns tank field storage by pumping, and supplementary dilute phosphoric acid is replaced simultaneously; Improve system ammonia yield, tail gas can stably reaching standard discharge.
In the embodiment of the present invention, determine that production process spray urine cylinder scabs seriously by analysis, every day all will clear up, and wrap up cylinder easily go out to spend after parcel oil mass strengthens a little expect, particle color is uneven is cause due to material filling coefficient deficiency; After two equipment collets are increased 50 ~ 120mm respectively, operating performance is fine, and spray urine cylinder seldom scabs, and product pellet color is more even.
In the embodiment of the present invention, described crusher is chain type pulverizer; Described tablets press is rotary drum granulator, pair roller Squeezinggranulator or granulating disc; Described mixing and blending machine is horizontal mixer or pan mixer.
Embodiments provide the above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (8)
1. a Unit for Production of Sulfate-Based Compound Fertilizers, is characterized in that, comprising:
Mixing and blending machine, crusher, tablets press, slip device for distributing, drying machine, pre-neutralization tail wash machine, spray urine cylinder and sieve apparatus;
Described mixing and blending machine, for by raw material mixing and stirring;
Described crusher, for receiving the material stirred of described mixing and blending machine conveying, pulverizes the material bulk of mixing and stirring caking; And described crusher is arranged in above described tablets press, after broken, material directly enters described tablets press;
Described tablets press, for carrying out granulation by the material after stirring, crushing;
Described slip device for distributing, for starching to material spray on the material bed of described tablets press;
Described drying machine, is connected with described tablets press by transport tape, the granulating dry materials generated for making tablets press; Described drying machine afterbody increases trommel screen;
Described pre-neutralization tail washes machine, for generating pre-neutralization slip, delivers to described slip device for distributing; Described pre-neutralization tail is washed machine and is set up ammonia jet pipe, for stable slip degree of neutralization; Described pre-neutralization tail is washed machine and is set up displacement pipeline, for when washings proportion is too high or degree of neutralization is higher, make washings return tank field storage by pumping, and supplementary dilute phosphoric acid is replaced simultaneously;
Described spray urine cylinder, mends nitrogen to the finished particle of described drying machine conveying place;
Described sieve apparatus, is connected with described drying machine by transport tape, sieves the finished particle after mending nitrogen.
2. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, described tablets press inner shield ring height is 350 ~ 480mm.
3. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, in described tablets press, granulation zone accounts for 6000 ~ 7500mm, and polishing area accounts for 1500 ~ 3000mm.
4. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, described pre-neutralization tail is washed machine and set up hot wash device.
5. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, in described spray urine cylinder, two collets increase 50 ~ 120mm respectively.
6. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, described crusher is chain type pulverizer.
7. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, described tablets press is rotary drum granulator, pair roller Squeezinggranulator or granulating disc.
8. Unit for Production of Sulfate-Based Compound Fertilizers according to claim 1, is characterized in that, described mixing and blending machine is horizontal mixer or pan mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310329710.4A CN103420699B (en) | 2013-07-31 | 2013-07-31 | Device for preparing sulfur-based compound fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310329710.4A CN103420699B (en) | 2013-07-31 | 2013-07-31 | Device for preparing sulfur-based compound fertilizer |
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| CN103420699A CN103420699A (en) | 2013-12-04 |
| CN103420699B true CN103420699B (en) | 2015-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104058813A (en) * | 2014-06-06 | 2014-09-24 | 安徽省司尔特肥业股份有限公司 | Production process for sulfenyl nitrogen phosphorus and potassium |
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| CN101439999B (en) * | 2008-12-31 | 2011-06-01 | 聊城鲁西化工第五化肥厂 | Apparatus for improving nitrogen content of spray granulation compound fertilizer and method for producing high-nitrogen compound fertilizer |
| CN101508607B (en) * | 2009-03-20 | 2012-11-21 | 辽宁华锦化工（集团）有限责任公司 | Process for producing long-acting sustained-release complex fertilizer of urea sulfuric acid |
| CN202430141U (en) * | 2012-01-16 | 2012-09-12 | 杨孝仓 | Production equipment for compound fertilizers |
| CN203461982U (en) * | 2013-07-31 | 2014-03-05 | 安徽省司尔特肥业股份有限公司 | Sulfur-based composite fertilizer production device |
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