CN101993278A - High-tower high-nitrogen compound fertilizer production process capable of adjusting slurry concentration - Google Patents
High-tower high-nitrogen compound fertilizer production process capable of adjusting slurry concentration Download PDFInfo
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- CN101993278A CN101993278A CN2009100658231A CN200910065823A CN101993278A CN 101993278 A CN101993278 A CN 101993278A CN 2009100658231 A CN2009100658231 A CN 2009100658231A CN 200910065823 A CN200910065823 A CN 200910065823A CN 101993278 A CN101993278 A CN 101993278A
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Abstract
The invention relates to a high-tower high-nitrogen compound fertilizer production process capable of adjusting slurry concentration. In the invention, partial urea is replaced by ammonium chloride (or ammonium sulfate) in the ingredients; the proportion by weight of the added ammonium chloride or the ammonium sulfate to the urea is 10-20:50. Only an ammonium chloride enhancer, a screening device and a metering device are added; the production process is easy to realize; the problems of small granule, easy hardening and bad appearance quality during the production of high-nitrogen product via high-tower melt granulation are solved; the problems that the product is easy to harden and the cost of the production raw material is reduced are solved; and the market competitiveness of the product is improved.
Description
Technical field
The present invention relates to a kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density.
Background technology
Generally adopt compound fertilizer production by tower granulation at present, wherein pulp density is rare more, and the drop that shower nozzle throws away is more little, and product particle is also just more little.A large amount of operating practices show that the ratio of urine in slip is big more, and the concentration of high tower fused melt slip is rare more, and the particle of producing through shower nozzle is more little, cause that the small-particle returning charge is many, finished product hardens easily; Some producer reduces the shower nozzle rotating speed, but causes tonsil particles too many in order to increase particle, and the outward appearance roundness is poor.The problem that high nitrogen high tower product granulated pellet is less than normal, the outward appearance roundness is poor, harden easily.When high tower was produced high nitrogen prescription, because the urine ratio is big, molten slurry was rare, and the particle small-particle ratio that shower nozzle is produced is big, and the small-particle returning charge is many; Because product particle is little, product easily hardens, and influence is sold; For increasing particle, take to reduce the method for shower nozzle rotating speed, owing to produce less relatively, the difficult bonding of material of viscous material in the batching, so the granulation balling ratio is low, particle appearance is rounding not.
Summary of the invention
The purpose of this invention is to provide a kind ofly can produce volume particle size, be difficult for hardening, high nitrogen product that visual appearance is good, the high tower fused melt granulated compound fertilizer production technique that can also reduce production costs simultaneously.
In order to achieve the above object by the following technical solutions:
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
A. urea is through metering, and fusion is made urea or directly used urine, delivers in the tempering tank on the high tower;
B. Repone K, phosphorus ammonium, stopping composition are sent in the tempering tank through metering after the processing;
C. powder material and urine fully mix at tempering tank, flow into differential prilling spry by gravity;
D. by the centrifugal force of shower nozzle high speed rotating mixed slurry is thrown away countless small dropletss, small droplets in prilling tower in the dropping process with tower in the air inversion contact heat-exchanging that rises, small droplets progressively is frozen into solid particulate by liquid with decrease of temperature;
E. solid particulate is finished product through cooling, screening, anti-caking processing, packing;
In step a, add a part of ammonium chloride or ammonium sulfate and replace a part of urea, the weight part ratio of described adding ammonium chloride or ammonium sulfate and urea is ammonium chloride: urea=(10-20): 50 or ammonium sulfate: urea=(10-20): 50.
The weight part ratio of described adding ammonium chloride or ammonium sulfate and urea is ammonium chloride: urea=15: 50 or ammonium sulfate: urea=15: 50.
The rotating speed of shower nozzle is 25-30Hz.
The present invention takes to use ammonium chloride (or ammonium sulfate) instead of part urea in batching, only need to increase an ammonium chloride lift, screening, metering outfit, production technique realizes easily, solved high tower fused melt granulated when producing high nitrogen product particle little, easily harden, serial problem such as visual appearance difference, solved simultaneously that product easily hardens, the raw materials for production cost reduces, and improves the competitiveness of product in market.
When producing high nitrogen product, the urea ratio is big, molten slurry urine ratio is big, pulp density is rare, after using ammonium chloride (ammonium sulfate) instead of part urea, can reduce the ratio of urine in slip, regulate the concentration of slip, prevent to cause finished particle integral body less than normal because of pulp density is rare, the small-particle returning charge is many.
High tower fused melt granulated is to lean on the centrifugal force of shower nozzle high speed rotating that mixed slurry is thrown away countless small dropletss, and pulp density is rare, and drop is more little, and product particle is also just more little; When producing high nitrogen product, by taking with behind ammonium chloride (or ammonium sulfate) the instead of part urea, the concentration of regulating slip realizes regulating the purpose of finished product granular size.
The urine ratio is big in the high nitrogen prescription, molten slurry concentration is rare, less than normal through the particle integral body that prilling spry comes out, the small-particle returning charge is many, in order to increase particle, to reduce the small-particle returning charge, take to reduce the measure of shower nozzle rotating speed, cause in the product tonsil particles many, particle appearance is inhomogeneous, rounding not, and by in batching, adopting ammonium chloride (or ammonium sulfate) instead of part urea, regulate pulp density, increase the particle that shower nozzle is produced, do not take to reduce the measure of shower nozzle rotating speed, make the whole increase of particle dynamics, do not have the flat particle, realize improving the purpose of product appearance quality.
The urine ratio is big in the high nitrogen prescription, molten slurry concentration is rare, less than normal through the particle integral body that prilling spry comes out, and particle less than normal be the major cause that causes product to harden, take in batching, to use ammonium chloride (or ammonium sulfate) instead of part urea, finished particle is increased, realize alleviating the purpose that product hardens.
Take in batching, to use ammonium chloride (or ammonium sulfate) instead of part urea, not only the price of a nitrogen is lower than the price of a nitrogen in the urea in the ammonium chloride (or ammonium sulfate), and reduced the consumption of stopping composition behind the use ammonium chloride (or ammonium sulfate), reduced production costs.
The present invention is in producing blending process, for the high prescription of nitrogen content, take to use the batching and the production technique of ammonium chloride or ammonium sulfate instead of part urea, the liquid proportional of helping a small child urinate by holding his legs apart is controlled at 45%--50%, the urine ratio surpasses at 55% o'clock relatively, and the product particle degree on average increases 1mm, uniform particles, rounding, product is difficult for hardening, and can reduce production costs.The price of a nitrogen is lower than the price of a nitrogen in the urea in ammonium chloride or the ammonium sulfate, and reduced the consumption of stopping composition behind use ammonium chloride or the ammonium sulfate, to produce 30-5-5 prescription high tower product is example, 2000 yuan/ton of urea prices, 800 yuan/ton of ammonium chloride prices, 150 yuan/ton of ground dolomite prices, use 12% ammonium chloride to calculate in batching, the fertile raw materials cost of ton can reduce more than 40 yuan.
Embodiment
Embodiment 1
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density, produce the high nitrogen type prescription of 28-6-6 at the high tower production line, prepare burden by weight, 50 parts in urea, 15 parts of ammonium chlorides, 10 parts in Repone K, 13.5 parts of monoammonium phosphates, 10 parts of ground dolomites, urea and ammonium chloride are urine through screening processing, fusion; The powder material of compositions such as phosphorus, potassium, stopping composition is removed foreign material, block through screening and is handled, and together is delivered to batch mixing well heater on the tower with urine then, and temperature is heated to 60-80 ℃, after send into tempering tank;
Powder material and urine fully mix in tempering tank, and in mixing time was controlled 4 minutes, to differential prilling spry, the rotating speed of shower nozzle was 25-30Hz by run by gravity, lean on the centrifugal force of differential shower nozzle high speed rotating that mixed slurry is thrown away countless small dropletss;
Small droplets in prilling tower in the dropping process with tower in air (in 40 ℃ of the temperature) the counter current contact heat exchange of rising, small droplets progressively is frozen into solid particulate by liquid with decrease of temperature, temperature is reduced to 40-70 ℃ when dropping down onto at the bottom of the tower, sends into cooler by finished belt after hopper is collected.
The finished product treating processes comprises continuation cooling, screening, coating, packaging process, in cooler the moisture that removes is spread on the particle top layer as yet, by the air of the bed that flows steam is taken away, and reaches the cooling purpose simultaneously, and temperature of charge is cooled to below 45 degree; Cooled material is carried through bucket and is entered trommel screen, will be less than 1.5mm, screen out greater than the particle of 4.5mm; The finished product that sifts out can be packaged as finished product after anti-caking is handled; Fines and macrobead return the tempering tank secondary granulation.
Embodiment 2
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 10 parts of ammonium chlorides, the urea urine is made in fusion, delivers in the tempering tank on the high tower; 10 parts in Repone K, 12 parts of phosphorus ammoniums, 10 parts of ground dolomites are sent in the tempering tank after the processing; Powder material and urine fully mix at tempering tank, flow into differential prilling spry by gravity; The rotating speed of shower nozzle is 25Hz.
Other steps are with embodiment 1.
Embodiment 3
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 12 parts of ammonium chlorides, the urea urine is made in fusion, delivers in the tempering tank on the high tower; 11 parts in Repone K, 11 parts of phosphorus ammoniums, 11 parts of ground dolomites are sent in the tempering tank after the processing; The rotating speed of shower nozzle is 26Hz.
Other steps are with embodiment 1.
Embodiment 4
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 10 parts of ammonium chlorides, the urea urine is made in fusion, delivers in the tempering tank on the high tower; 10 parts in Repone K, 12 parts of phosphorus ammoniums, 10 parts of ground dolomites are sent in the tempering tank after the processing; The rotating speed of shower nozzle is 25Hz.
Other steps are with embodiment 1.
Embodiment 5
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 10 parts in ammonium sulfate, the urea urine is made in fusion, delivers in the tempering tank on the high tower; 10 parts in Repone K, 10 parts of diammonium phosphate, 10 parts of ground dolomites are sent in the tempering tank after the processing.
Other steps are with embodiment 1.
Embodiment 6
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 20 parts in ammonium sulfate, the urea urine is made in fusion, delivers in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 7
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts in urea, 15 parts in ammonium sulfate, the urea urine is made in fusion, delivers in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 8
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 10 parts in ammonium sulfate add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 9
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 20 parts in ammonium sulfate add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 10
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 15 parts in ammonium sulfate add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 11
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 20 parts of ammonium chlorides add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 12
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 10 parts of ammonium chlorides add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Embodiment 13
A kind of high tower high-nitrogen compound fertilizer production technique of regulating pulp density may further comprise the steps:
50 parts of urines, 15 parts of ammonium chlorides add ammonium sulfate in the urine, deliver in the tempering tank on the high tower.
Other steps are with embodiment 1.
Claims (3)
1. the high tower high-nitrogen compound fertilizer production technique that can regulate pulp density may further comprise the steps:
A. urea is through metering, and fusion is made urea or directly used urine, delivers in the tempering tank on the high tower;
B. Repone K, phosphorus ammonium, stopping composition are sent in the tempering tank through metering after the processing;
C. powder material and urine fully mix at tempering tank, flow into differential prilling spry by gravity;
D. by the centrifugal force of shower nozzle high speed rotating mixed slurry is thrown away countless small dropletss, small droplets in prilling tower in the dropping process with tower in the air inversion contact heat-exchanging that rises, small droplets progressively is frozen into solid particulate by liquid with decrease of temperature;
E. solid particulate is finished product through cooling, screening, anti-caking processing, packing;
It is characterized in that: in step a, add a part of ammonium chloride or ammonium sulfate and replace a part of urea, the weight part ratio of described adding ammonium chloride or ammonium sulfate and urea is ammonium chloride: urea=(10-20): 50 or ammonium sulfate: urea=(10-20): 50.
2. high tower fused melt granulated compound fertilizer production technique according to claim 1 is characterized in that: the weight part ratio of described adding ammonium chloride or ammonium sulfate and urea is ammonium chloride: urea=15: 50 or ammonium sulfate: urea=15: 50.
3. high tower fused melt granulated compound fertilizer production technique according to claim 2 is characterized in that: the rotating speed of shower nozzle is 25-30Hz.
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| CN2009100658231A CN101993278A (en) | 2009-08-18 | 2009-08-18 | High-tower high-nitrogen compound fertilizer production process capable of adjusting slurry concentration |
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| CN2009100658231A CN101993278A (en) | 2009-08-18 | 2009-08-18 | High-tower high-nitrogen compound fertilizer production process capable of adjusting slurry concentration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892066A (en) * | 2015-05-26 | 2015-09-09 | 常熟市南洋化肥有限公司 | Sulfur-containing high-nitrogen potassium fertilizer and preparation method thereof |
| CN114605207A (en) * | 2020-12-08 | 2022-06-10 | 徐州市芭田生态有限公司 | Method for improving stability of compound fertilizer prepared by high tower |
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| CN1403423A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
| CN1475470A (en) * | 2003-06-23 | 2004-02-18 | 深圳市芭田生态工程股份有限公司 | Method of producing granular composite fertilizer using high tower pellatizer and equipment |
| CN1762923A (en) * | 2005-09-13 | 2006-04-26 | 临沂市史丹利化肥有限公司 | Melt slime granulating composite fertilizer and its production method |
| CN101003453A (en) * | 2006-01-17 | 2007-07-25 | 广东福利龙复合肥有限公司 | High tower graining method for producing composite (mixed) fertilizer |
-
2009
- 2009-08-18 CN CN2009100658231A patent/CN101993278A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1403423A (en) * | 2002-10-14 | 2003-03-19 | 深圳市芭田生态工程股份有限公司 | Low-tower molten slurry pelletizing method and apparatus to produce granulated multicomponent composite fertilizer |
| CN1475470A (en) * | 2003-06-23 | 2004-02-18 | 深圳市芭田生态工程股份有限公司 | Method of producing granular composite fertilizer using high tower pellatizer and equipment |
| CN1762923A (en) * | 2005-09-13 | 2006-04-26 | 临沂市史丹利化肥有限公司 | Melt slime granulating composite fertilizer and its production method |
| CN101003453A (en) * | 2006-01-17 | 2007-07-25 | 广东福利龙复合肥有限公司 | High tower graining method for producing composite (mixed) fertilizer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892066A (en) * | 2015-05-26 | 2015-09-09 | 常熟市南洋化肥有限公司 | Sulfur-containing high-nitrogen potassium fertilizer and preparation method thereof |
| CN114605207A (en) * | 2020-12-08 | 2022-06-10 | 徐州市芭田生态有限公司 | Method for improving stability of compound fertilizer prepared by high tower |
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