CN1948234A - High nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer and its production method - Google Patents
High nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer and its production method Download PDFInfo
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- CN1948234A CN1948234A CN 200610037736 CN200610037736A CN1948234A CN 1948234 A CN1948234 A CN 1948234A CN 200610037736 CN200610037736 CN 200610037736 CN 200610037736 A CN200610037736 A CN 200610037736A CN 1948234 A CN1948234 A CN 1948234A
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Abstract
The present invention relates to a new-type high-nitrogen thioyl nitrogen-phosphorus-potassium slowly-released complex fertilizer and its production method. It is characterized by that it includes a base body of thioyl nitrogen-phosphorus-potassium complex fertilizer made up by using concentrated sulfuric acid, dilute phosphoric acid, potassium nitride and liquid ammonia, in said base body the urea-formaldehyde is contained, the external surface of said thioyl nitrogen-phosphorus-potassium complex fertilizer is covered with a layer of urea layer, and the urea layer exterior is covered with a layer of complex fertilizer anticaking agent.
Description
Technical field
The present invention relates to a kind of compound manure, specifically be a kind of nitrogen content more than 15%, the high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer that nutrient can be adjusted flexibly.
Background technology
Sulfenyl nitrogen-phosphorus-potassium compound fertilizer is to improve Soil structure in recent years, improves one of technical factor of crop quality, belongs to new type chemical fertilizer, and market outlook are wide, are adapted to tobacco leaf, melon and fruit, vegetables etc. especially and avoid the chlorine cash crop, and it is remarkable to increase excellent effect.
The domestic production sulfenyl nitrogen-phosphorus-potassium compound fertilizer mainly contains following youngster and plants mode at present:
The one, be the sulfenyl nitrogen-phosphorus-potassium compound fertilizer of raw material production to adopt solid sulphuric acid potassium, sulphur ammonium, monoammonium phosphate and relevant auxiliary materials, belong to the physical mixed mode of production, secondary processing, its production cost and selling price are higher, the peasant is difficult to bear, enterprise profit is meagre, and cost free advantage, the market competitiveness are not strong;
The 2nd, with the introduction of foreign technology sulfenyl nitrogen-phosphorus-potassium compound fertilizer that the employing strong phosphoric acid, the vitriol oil, liquefied ammonia, Repone K etc. of representative are produced with tubular reactor-rotary drum prilling process for raw material, though its great variety of goods, nutrient is adjustable, but its production cost is higher, price and imported product are suitable, it is per ton high about 500 yuan to produce similar composite fertilizer price than domestic other modes, and the peasant is difficult to bear;
The 3rd, domestic a collection of composite fertilizer manufacturer since the nineties in last century, adopting the low temperature conversion slurry process is the raw material production sulfenyl nitrogen-phosphorus-potassium compound fertilizer with dilute phosphoric acid, the vitriol oil, liquefied ammonia, Repone K, though its production cost is lower, price also can adapt to market, but being exactly its nutrient, its fatal defective is difficult to adjust, the nitrogen ratio is difficult to improve (its nitrogen ratio only is 12%), has seriously restricted the demand of crop to high-nitrogen sulfonyl azophoska compound fertilizer.
Summary of the invention
At present domestic sulfenyl nitrogen-phosphorus-potassium compound fertilizer nutrient can not adjust, the nitrogen ratio can not improve and the easy defective such as loss of fertilizer, the present invention is according to crop characteristic and nutrient demand, employing is that the Repone K low temperature conversion method of one of raw material combines with the drum granulating production technique with the dilute phosphoric acid, newly-increased cooling system benefit nitrogen technology and fertilizer anti-caking, coated slow-release technology combine, and a kind of high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer and production method thereof are provided.
Concrete technical solution is such:
The high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, comprise that the sulphur nitrogen-phosphorus-potassium compound fertilizer that raw material is made by the vitriol oil, dilute phosphoric acid, Repone K, liquefied ammonia is a matrix, it is characterized in that containing in the matrix urea aldehyde that when drum granulating, sprays into, the appearance of sulphur nitrogen-phosphorus-potassium compound fertilizer coats one deck urea layer, coats one deck anti-coagulating agent for composite fertilizer layer outside the urea layer;
Below showing the content of imitating the composition conversion is:
N 15.5～19.5％
P
2O
5 13.5～15.5％
K
2O 12.5～14.5％
S 10.5～18.5％。
Described composite fertilizer is characterized in that the weight percent of the urea aldehyde that wherein contains is 11-26%.
The production method of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, adopting the low temperature conversion slurry process is the raw material production sulfenyl nitrogen-phosphorus-potassium compound fertilizer with dilute phosphoric acid, the vitriol oil, liquefied ammonia, Repone K, it is characterized in that entering rotary drum simultaneously at dilute phosphoric acid, the vitriol oil, liquefied ammonia, the reacted slip of Repone K; With in nitrogenous fertilizer, phosphate fertilizer, the potash fertilizer one or more, or/and the rotary drum mixing granulation is sent in one or more interpolations in the sustained release dosage, trace element, other useful composition; Drying screening back is at finished granule surface coated fused urea soln and solidify covering; Add anti-coagulating agent for composite fertilizer in the spray of finished granule surface again, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
Described method is characterized in that described nitrogenous fertilizer is meant urea, and phosphate fertilizer is meant monoammonium phosphate or diammonium phosphate, and potash fertilizer is meant Repone K, and described sustained release dosage is a formaldehyde, and described trace element is boron, zinc, copper.
Described method, the interpolation gross weight that it is characterized in that described nitrogenous fertilizer, phosphoric acid, potash fertilizer, trace element is 9～42% of a high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, and the interpolation weight of sustained release dosage is 9～21% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer.
Production method of the present invention, it is characterized in that it being to enter rotary drum simultaneously at dilute phosphoric acid, the vitriol oil, liquefied ammonia, the reacted slip of Repone K, adopt another circuit that urea, formaldehyde are mixed with the urea aldehyde slip that contains N37～39% and spray into rotary drum simultaneously, with solid fertilizer mixing granulations such as the outside returns that enters rotary drum, phosphorus, potassium, trace elements; Covering is solidified in the finished granule surface coated at the urine film applicator once more with 65～75 ℃ fusing urea solution in drying screening back; Add the anti-caking agent in the spray of finished granule surface at last, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
Above-mentioned method, the interpolation weight that it is characterized in that containing the urea aldehyde of N37～39% is 11～26% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, the interpolation weight of solid fertilizers such as phosphorus, potassium, trace element is the 10-40% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, the weight of the urea of coatedparticles is the 3-4% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, and the interpolation weight of anti-caking agent is 0.08～0.15% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer.
Outside returns:
After material entered mixture drying that drum granulating comes out, sieve classification, qualified particle enters parcel, cooling, metering, packing became final product, and the coarse grain that classification is come out, fine powder return fragmentation, granulation, and this part material is called outside returns.
This high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer, liquid phase feed and solid phase raw material by nitrogenous, phosphorus, potassium available nutrient composition are pressed certain consumption proportion, handle the nitrogen content height of making (N 〉=15%), the adjustable nitrogen phosphorus of nutrient potassium and sulfenyl 3 composite fertilizer through three chemosynthesis reactions and a special process successively.
Production technique of the present invention adopts the 98% excessive vitriol oil to decompose Repone K down at lesser temps (130 ℃), obtains potassium hydrogen sulfate solution, and this solution mixes the formation nitration mixture with 26% dilute phosphoric acid, feeds the liquefied ammonia neutralization again, forms to contain N
12-P
18-K
15Slip enters rotary drum; Another circuit with urea, formaldehyde by weight ratio U/F=1.4 be mixed with the slowly-releasing urea aldehyde slip that contains N38% and spray into rotary drum simultaneously; With outside returns that enters rotary drum and the nitrogen phosphorus potassium solid fertilizer mixing granulation that needs to replenish interpolation.Covering is solidified in the finished granule surface coated at the urine film applicator once more with fusing urea solution in drying screening back, and (its temperature is controlled at 65～75 ℃, the lip-deep solvend of this temperature solubilized nitrogen phosphorus k particle, urine is in time condensed), can make nitrogen content reach 16～19%; Add anti-caking agent patented product in the spray of packing machine tail end finished granule surface at last, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
The patent No. of anti-caking agent product is the 011.34163.7 anti-coagulating agent for composite fertilizer, belongs to prior art.
Principal elements such as the required N of crop, P, K, S are rich in composite fertilizer of the present invention, and the N cellulose content can reach 16～19%, N, P, K total nutrient 44～46% in the finished product, effectively improved the ratio of S-based compound fertilizer nitrogen, improved the utilization ratio of fertilizer (particularly nitrogen), satisfied crop to further raising output, improve the demand of quality.
This product is compared with present domestic existing sulfenyl nitrogen-phosphorus-potassium compound fertilizer, has the following advantages:
(1), process using of the present invention with the dilute phosphoric acid be one of raw material Repone K low temperature conversion and drum granulating production technique, nitrogen technology mended by newly-increased cooling system and the coated slow-release technology combines, production cost is lower, low about 500 yuan per ton of the external S-based compound fertilizer product of price, than domestic existing common S-based compound fertilizer only high 50 yuan (because of containing slow-release function) per ton, the business economic remarkable benefit, the peasant can bear, and the market competitiveness is strong;
(2), composite fertilizer of the present invention nitrogen ratio can bring up to 16～19%, contains the demand that CL＜3.0% can effectively satisfy high nitrogen fear-chlorion crop, effectively improves crop yield and product quality;
(3), composite fertilizer of the present invention nitrogen nutrient ratio from 15% to 19% can adjust flexibly, changed the present situation that S-based compound fertilizer nutrient that present domestic employing low temperature conversion method produces can not be adjusted, and can at utmost satisfy the different demands of various farm crop to nutrient;
(4), contain urea aldehyde urea N in the technology of the present invention and account for total N25%-52%, make product available nutrient release period reach 3 months, particularly the utilization ratio of nitrogen is significantly improved, can reach 25%～30%, reduce the loss of fertilizer, impelled peasant's increasing both production and income, favourable to environmental protection simultaneously;
Embodiment
The invention will be further described below by example.
Embodiment 1:
Produce high-nitrogen sulfonyl azophoska compound fertilizer: S
18-N
16-P
15-K
13, (N 〉=16% wherein, S 〉=12%, CL
-＜3%, N, P, the single nutrient of K ± 0.5)
Get
98% sulfuric acid 0.560t
100%P
2O
5Phosphoric acid 0.153t---(adopt 26% dilute phosphoric acid, wherein amount to and contain 100%P
2O
5)
60%K
2O Repone K 0.214t---(refer to amount in the pure product Repone K and contain 60%K
2O)
99.5% liquefied ammonia 0.134t
38%N urea aldehyde 0.106t---(containing 38%N in the urea aldehyde)
10-50-0 phosphorus ammonium/
46%N urea 0.044t (coat with)---(referring to contain in the urea 46%N)
Anti-caking agent 0.001t
More than for producing one ton of composite fertilizer's desired raw material
Adopt the 98% excessive vitriol oil to decompose Repone K down at lesser temps (130 ℃), obtain potassium hydrogen sulfate solution, this solution mixes the formation nitration mixture with 26% dilute phosphoric acid, feeds the liquefied ammonia neutralization again, forms to contain N
12-P
18-K
15Slip enters rotary drum; The slowly-releasing urea aldehyde slip that another circuit will contain N38% sprays into rotary drum (with the outside returns mixing granulation that enters rotary drum) simultaneously.Covering is solidified in the finished granule surface coated at the urine film applicator once more with fusing urea solution in drying screening back, and (its temperature is controlled at 65～75 ℃, the lip-deep solvend of this temperature solubilized nitrogen phosphorus k particle, urine is in time condensed), add anti-caking agent patented product in the spray of packing machine tail end finished granule surface at last, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
By above-mentioned operational path, through three chemosynthesis, once mend nitrogen successively, once spray anti-hard caking agent, get product through metering packing.
Embodiment 2:
Produce high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer: S
15-N
17-P
14-K
14, N+P
2O
5+ K
2O 〉=45% (N 〉=16% wherein, S 〉=12%, CL
-＜3%, N, P, the single nutrient of K ± 0.5)
Get
98% sulfuric acid 0.460t
100%P
2O
5Phosphoric acid 0.126t
60%K
2O Repone K 0.236t
99.5% liquefied ammonia 0.111t
38%N urea aldehyde 0.168t
10-50-0 phosphorus ammonium 0.028t
46%N urea 0.044t
Anti-caking agent 0.001t
More than for producing one ton of composite fertilizer's desired raw material
By above-mentioned operational path, through three chemosynthesis, once mend nitrogen successively, once spray the anti-caking agent, get product through metering packing.
Embodiment 3:
Produce high-nitrogen sulfonyl azophoska compound fertilizer: S
11-N
19-P
14-K
13, N+P
2O
5+ K
2O 〉=45% (N 〉=16% wherein, CL
-＜3%, N, P, the single nutrient of K ± 0.5)
Get
98% sulfuric acid 0.330t
100%P
2O
5Phosphoric acid 0.090t
60%K
2O Repone K 0.226t
99.5% liquefied ammonia 0.079t
38%N urea aldehyde 0.256t
10-50-0 phosphorus ammonium 0.100t
46%N urea 0.044t
Anti-caking agent 0.001t
More than for producing one ton of composite fertilizer's desired raw material
By above-mentioned operational path, through three chemosynthesis, once mend nitrogen successively, once spray anti-hard caking agent, get product through metering packing.
Embodiment 4:
1, this products material consumption proportion (consuming metering) by producing ton composite fertilizer
A, 98% vitriol oil, 0.33～0.56t
B, 100%P
2O
5Phosphoric acid 0.09～0.153t
C, 60%K
2O Repone K 0.214～0.236t
D, 99.5% liquefied ammonia, 0.079～0.134t
E, 38%N slowly-releasing urea aldehyde 0.106～0.256t
F, 10-50-0 solid phosphoric acid one ammonium 0～0.10t
G, 46% urea 0.03-0.044t
H, compound fertilizer anticaking agent 0.0008～0.0015t (according to the atmospheric moisture adjustment) production technique is the same.
Claims (7)
1, high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, comprise that the sulphur nitrogen-phosphorus-potassium compound fertilizer that raw material is made by the vitriol oil, dilute phosphoric acid, Repone K, liquefied ammonia is a matrix, it is characterized in that containing in the matrix urea aldehyde that when drum granulating, sprays into, the appearance of sulphur nitrogen-phosphorus-potassium compound fertilizer coats one deck urea layer, coats one deck anti-coagulating agent for composite fertilizer layer outside the urea layer;
Below showing the content of imitating the composition conversion is:
N 15.5～19.5％
P
2O
5 13.5～15.5％
K
2O 12.5～14.5％
S 10.5～18.5％。
2, composite fertilizer according to claim 1 is characterized in that the weight percent of the urea aldehyde that wherein contains is 11-26%.
3, the production method of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, adopting the low temperature conversion slurry process is the raw material production sulfenyl nitrogen-phosphorus-potassium compound fertilizer with dilute phosphoric acid, the vitriol oil, liquefied ammonia, Repone K, it is characterized in that entering rotary drum simultaneously at dilute phosphoric acid, the vitriol oil, liquefied ammonia, the reacted slip of Repone K; With in nitrogenous fertilizer, phosphate fertilizer, the potash fertilizer one or more, or/and the rotary drum mixing granulation is sent in one or more interpolations in the sustained release dosage, trace element, other useful composition; Drying screening back is at finished granule surface coated fused urea soln and solidify covering; Add anti-coagulating agent for composite fertilizer in the spray of finished granule surface again, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
4, method according to claim 3 is characterized in that described nitrogenous fertilizer is meant urea, and phosphate fertilizer is meant monoammonium phosphate or diammonium phosphate, and potash fertilizer is meant Repone K, and described sustained release dosage is a formaldehyde, and described trace element is boron, zinc, copper.
5, method according to claim 3, the interpolation gross weight that it is characterized in that described nitrogenous fertilizer, phosphoric acid, potash fertilizer, trace element is 9～42% of a high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, and the interpolation weight of sustained release dosage is 9～21% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer.
6, method according to claim 3, it is characterized in that it being to enter rotary drum simultaneously at dilute phosphoric acid, the vitriol oil, liquefied ammonia, the reacted slip of Repone K, adopt another circuit that urea, formaldehyde are mixed with the urea aldehyde slip that contains N 37～39% and spray into rotary drum simultaneously, with solid fertilizer mixing granulations such as the outside returns that enters rotary drum, phosphorus, potassium, trace elements; Covering is solidified in the finished granule surface coated at the urine film applicator once more with 65～75 ℃ fusing urea solution in drying screening back; Add the anti-caking agent in the spray of finished granule surface at last, form high nitrogen sulfur base nitrogen phosphorus potassium slow release composite fertilizer.
7, method according to claim 6, the interpolation weight that it is characterized in that containing the urea aldehyde of N 37～39% is 11～26% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, the interpolation weight of solid fertilizers such as phosphorus, potassium, trace element is the 10-40% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, the weight of the urea of coatedparticles is the 3-4% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer, and the interpolation weight of anti-caking agent is 0.08～0.15% of high nitrogen sulfur base nitrogen phosphorus potassium slow release new type compound fertilizer.
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| CN1948234B CN1948234B (en) | 2012-10-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159549A (en) * | 2012-12-26 | 2013-06-19 | 施可丰化工股份有限公司 | Preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer |
| CN105367304A (en) * | 2015-12-24 | 2016-03-02 | 贵州省化工研究院 | Method for preparing long-acting slow-release nitrogenous fertilizer through ureaformaldehyde composite glycolic acid |
| CN110483126A (en) * | 2019-09-20 | 2019-11-22 | 瓮福达州化工有限责任公司 | A kind of multielement compound phosphatic fertilizer and preparation method thereof |
| CN111943784A (en) * | 2020-09-17 | 2020-11-17 | 嘉施利（宜城）化肥有限公司 | Compound fertilizer production method |
| CN115677409A (en) * | 2022-11-09 | 2023-02-03 | 应城市新都化工复合肥有限公司 | High-nitrogen compound fertilizer and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138728C (en) * | 1998-06-02 | 2004-02-18 | 朱永绥 | Method for producing urea-formaldehyde compound fertilizer |
| CN1157350C (en) * | 2000-08-29 | 2004-07-14 | 海南富岛化工有限公司 | Method for preventing urea from caking |
| CN1293175A (en) * | 2000-09-29 | 2001-05-02 | 泸天化（集团）有限责任公司 | Fluidized gramulating process of heterogeneous urea-base compound fertilizer |
| CN1281556C (en) * | 2003-07-21 | 2006-10-25 | 南京大学 | Coated slow-release urea and its preparation method |
-
2006
- 2006-01-09 CN CN2006100377361A patent/CN1948234B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103159549A (en) * | 2012-12-26 | 2013-06-19 | 施可丰化工股份有限公司 | Preparation method of slow-release long-acting sulfur-based nitrogen potassium compound fertilizer |
| CN105367304A (en) * | 2015-12-24 | 2016-03-02 | 贵州省化工研究院 | Method for preparing long-acting slow-release nitrogenous fertilizer through ureaformaldehyde composite glycolic acid |
| CN110483126A (en) * | 2019-09-20 | 2019-11-22 | 瓮福达州化工有限责任公司 | A kind of multielement compound phosphatic fertilizer and preparation method thereof |
| CN111943784A (en) * | 2020-09-17 | 2020-11-17 | 嘉施利（宜城）化肥有限公司 | Compound fertilizer production method |
| CN115677409A (en) * | 2022-11-09 | 2023-02-03 | 应城市新都化工复合肥有限公司 | High-nitrogen compound fertilizer and preparation method thereof |
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| CN1948234B (en) | 2012-10-31 |
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