CN100484906C - Preparation of humic urea - Google Patents
Preparation of humic urea Download PDFInfo
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- CN100484906C CN100484906C CNB200610052445XA CN200610052445A CN100484906C CN 100484906 C CN100484906 C CN 100484906C CN B200610052445X A CNB200610052445X A CN B200610052445XA CN 200610052445 A CN200610052445 A CN 200610052445A CN 100484906 C CN100484906 C CN 100484906C
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- urea
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Abstract
The present invention discloses preparation process of humic urea, and features that during synthesizing urea, humic acid and adhesive are added directly to produce humic urea. The materials include humic acid in 5-300 weight portions, adhesive in 1-50 weight portions, and 70.0-99.7 % concentration urea solution in 60-300 weight portions. The preparation process includes mixing the materials, pelletizing in nozzle, solid pelletizing, drying and other steps. The preparation process has full complexing between humic aid and urea, and is simple, low in cost and suitable for industrial production, and the humic urea product has less moisture absorption, high strength, long storage life and raised urea utilizing rate.
Description
Technical field
The present invention relates to a kind of preparation process of humic urea.
Background technology
In order to improve utilization rate of nitrogen fertilizer, especially improve the utilization ratio of the urea of usage quantity maximum, the many scientists in the world have carried out a large amount of explorations.Since nineteen sixties, the someone is engaged in the research of urea synergic always both at home and abroad, and its approach roughly has three kinds: first kind is additive process, promptly adds urease activity inhibitor or nitrobacteria activity inhibitor in urea melting liquid.So far existing more than 70 kind of urease inhibitor and more than 100 kind of nitrobacteria inhibitor are through on probation; Second kind is parcel (coating) method, and its bag is coated with material sulphur, resin, plastics, pitch, phosphoric acid salt etc.; The third is the polycondensation method, mainly is that urea aldehyde is condensed into macromole indissoluble thing, as IBDU etc.China's additive process long-acting carbamide and coating urea also make certain gains.But all there is the cost height in above three kinds of synergisting methods, or the virose problem of the additive that has.Relevant both at home and abroad scholar has turned to goal in research and has sought cheap, environmental protection and effectively on area synergist and the synergisting method, wherein the interest to coal humic acid (HA) is to grow with each passing day.
Humic acid urea (being also referred to as rotten urea) is that humic acids and urea complexation react and the hydrogen bond nitrogenous fertilizer of generation.Can effectively suppress and delay urase and decompose, belong to new slow release fertilizer.Humic acid urea had both possessed the farming characteristic of activated humic acid, possessed the advantage of urea again, and the rotten urea complex compound of formation has better agricultural voltinism matter.
1, can save the usage quantity of nitrogenous fertilizer: can improve urea utilization ratio 10～50%, crop yield improves 5～50%.
2, increase the organic content of soil: contain 10%～25% organic matter in the humic acid urea.Life-time service can reduce hardening of soil, increases a mechanism, increases ventilation property.
3, promote plant establishment to tiller, increase the growth rate of plant leaf.
4, under the effect of activated humic acid, humic acid urea has possessed certain diseases prevention, cures the disease, anti-continuous cropping the performance of drought-resistant water-preserving.
5, the effect of improving the soil is obvious, and humic acid urea inherent molecular structure makes it can both improve acid soil and alkaline soil.
In disclosed patent at present, make the production technique of humic acid urea, mainly be the method that is based upon with liquefied ammonia or finished urea and humic acids reaction.For example:
Japan's special permission bulletin clear 34,8375 and clear 34,8376 provides relevant humic acids (HA) and urea (U), reacts the patent of making humic acid urea (UHA) through complexing, makes medium with liquefied ammonia, methyl alcohol, ethanol, acetone, reacts under 100～150 ℃ of conditions.Shortcoming is because of production cost and technical reason, does not carry out industrial test and large-scale agricultural applications so far.
Japanese Patent Japan15917 behind urea and humic acids heating and melting, adds virose organic solvent formaldehyde solution again and handles, and shortcoming is easily to generate insoluble macromolecular resin compound, reduces urea efficiency.
Chinese patent CN1283600A uses internal layer urea, outer Wrapped urea humate by the humic acids parcel.Shortcoming is that industrial scale is little, and a line capacity is produced per year below 30,000 tons.
Chinese patent CN1376652A reacts with humic acids earlier with ammoniacal liquor or carbon ammonium aqueous solution, makes Wrapped urea humate with urea again.Shortcoming also is to be difficult to scale operation.
The common defects of above-mentioned these processing methodes is: the one, and urea and complexing humic acid effect are incomplete, and it is less to form rotten urea relative proportion.The 2nd, the suitability for industrialized production ability is too little.The 3rd, the place beyond urea plant produces, and causes transportation, gets on or off the bus and the increase of urea Packing Fee.
Summary of the invention
What the present invention will solve is the above-mentioned defective that prior art exists, and aims to provide a kind of suitable low cost, more easy-operating preparation process of humic urea.
The technical scheme that addresses the above problem employing is: a kind of preparation process of humic urea, it is characterized in that in urea synthesis process, directly add humic acids and tackiness agent, is that 70.0～99.7% urea soln mixes with concentration, produce humic acid urea, each component is prepared by following weight ratio:
60～300 parts of 1～50 part of urea solns of 5～300 parts of tackiness agents of humic acids.
Preparation process of humic urea of the present invention with humic acids and the tackiness agent that 60～200 orders are pulverized, directly evenly adds after temperature mixes evaporation concentration, fluid jetting head granulation in proportion in 70～150 ℃, the urea soln of concentration 70.0～99.7%; Through the solid granulation, last drying is made finished product again.
Preparation process of humic urea of the present invention, can also realize like this: when the molten urea soln of urea soln evaporation concentration to 95.0～99.7% passes through prilling spry, with blowing plant with humic acids and tackiness agent in proportion with the form of the mist that dusts, evenly spirt prilling tower and the granulation of fusing urea blended solid; Drying is made finished product then.
Preparation process of humic urea of the present invention, can also realize like this: with concentration is that 70.0～99.7% urea soln is sprayed onto in the reaction tank of humic acids and tackiness agent in proportion, mixes, the solid granulation; Drying is made finished product then.
Described solid granulation is the disk granulation, or drum granulating, or wherein any of high tower prilling.
Described humic acids is any or multiple combination wherein of coal humic acid, yellow humic acid, fulvic acid potassium, fulvic acid sodium, yellow humic acid zinc, potassium humate, calcium humate, Sodium salts humic acids, zinc humic acid, humic acids iron, ammonium humate, humic acids molybdenum.Described coal humic acid can be peat, brown coal or weathered coal.
Described tackiness agent is the wherein any or multiple combination of fused(calcium magnesium)phosphate, bentonite, calcium-magnesium powder or Fluorspar Powder.
Preparation process of humic urea of the present invention owing to directly utilize the work in-process in the urea synthesis process to react acquisition, can reduce manufacturing cost effectively, and technology is simple, and humic acids and urea complexation are abundant, is fit to urea plant industrial production in enormous quantities.At present, adopting existing urea granules is the coated preparation method of raw material, and its output is placed restrictions on about 30,000 tons, and adopts method of the present invention to prepare humic acid urea, and may command output is more than 500,000 tons, and its effect is conspicuous.Simultaneously, this long-acting humic acid urea can improve the urea utilization ratio, and product is difficult for the moisture absorption, intensity height, anti-storage.
Embodiment
In following embodiment, each component is pressed all by weight preparation.
Embodiment 1
In common urea (being small particle urea) production technique, when the urea soln evaporation concentration to 99.7% the time, this moment, temperature was controlled at about 140 ℃, urea is molten state, to be crushed to 18 parts of 100 purpose coal humic acids, 5 parts in fused(calcium magnesium)phosphate tackiness agent, evenly join in 77 parts of urea solns, make finished product by fluid jetting head granulation, high tower prilling, drying process behind the thorough mixing, dispatch from the factory after the packing.
Embodiment 2
In the common urea production technique, when the urea soln evaporation concentration to 99.7% the time, this moment, temperature was controlled at about 140 ℃, urea is molten state, to be crushed to 26 parts of 100 purpose coal humic acids (wherein weathered coal is 16 parts, 10 parts of zinc humic acids), 8 parts in tackiness agent (wherein 6 parts in fused(calcium magnesium)phosphate, 2 parts of bentonites), evenly join in 66 parts of urea solns, mix the back and make finished product, dispatch from the factory after the packing by fluid jetting head granulation, disk granulation, drying process.The finished product of present embodiment are for containing the zinc humic acid urea, and the farm crop that are fit to Gramineae food crop and happiness zinc are used.
Embodiment 3
In the common urea production technique, when urine evaporation concentrates 99.7%, when the molten urea soln passes through prilling spry, with blowing plant in proportion with 15 parts of coal humic acids and 5 parts of fused(calcium magnesium)phosphate tackiness agents, form with the mist that dusts, evenly the spirt prilling tower mixes with 80 parts of fusing ureas after high tower prilling, drying process are made finished product, dispatches from the factory after the packing.
Embodiment 4
In the granular urea production technique: with 40 parts of work in-process small particle ureas is nucleus, with 15 parts of coal humic acids and 5 parts of pulverulent mixtures that the fused(calcium magnesium)phosphate tackiness agent mixes, evenly join on the nucleus by funnel, be that 95.0～99.7% molten urea solns spray to nucleus simultaneously with 60 parts of concentration, carry out coated, drum granulating, drying process is made finished product, dispatch from the factory after the packing.
Embodiment 5
In the common urea production technique, with 100 parts of concentration be 80.0% urea soln by in the reaction tank that evenly is sprayed onto 15 parts of coal humic acids and 5 parts of fused(calcium magnesium)phosphate tackiness agents, behind thorough mixing, carry out the disk granulation, drying process is made finished product.
Embodiment 6～32
Repeat embodiment 1, the proportion relation between each component is as shown in table 1, and all the other operations are identical with embodiment.
Table 1
| Humic acids (part) | Tackiness agent (part) | 99.7% urea soln (part) |
| Embodiment 6 | 5 | 1 | 60 |
| Embodiment 7 | 5 | 1 | 150 |
| Embodiment 8 | 5 | 1 | 300 |
| Embodiment 9 | 5 | 25 | 60 |
| Embodiment 10 | 5 | 25 | 150 |
| Embodiment 11 | 5 | 25 | 300 |
| Embodiment 12 | 5 | 50 | 60 |
| Embodiment 13 | 5 | 50 | 150 |
| Embodiment 14 | 5 | 50 | 300 |
| Embodiment 15 | 150 | 1 | 60 |
| Embodiment 16 | 150 | 1 | 150 |
| Embodiment 17 | 150 | 1 | 300 |
| Embodiment 18 | 150 | 25 | 60 |
| Embodiment 19 | 150 | 25 | 150 |
| Embodiment 20 | 150 | 25 | 300 |
| Embodiment 21 | 150 | 50 | 60 |
| Embodiment 22 | 150 | 50 | 150 |
| Embodiment 23 | 150 | 50 | 300 |
| Embodiment 24 | 300 | 1 | 60 |
| Embodiment 25 | 300 | 1 | 150 |
| Embodiment 26 | 300 | 1 | 300 |
| Embodiment 27 | 300 | 25 | 60 |
| Embodiment 28 | 300 | 25 | 150 |
| Embodiment 29 | 300 | 25 | 300 |
| Embodiment 30 | 300 | 50 | 60 |
| Embodiment 31 | 300 | 50 | 150 |
| Embodiment 32 | 300 | 50 | 300 |
What should be understood that is: the foregoing description is just to explanation of the present invention, rather than limitation of the present invention, and any innovation and creation that do not exceed in the connotation scope of the present invention all fall within protection scope of the present invention.
Claims (8)
1, a kind of preparation process of humic urea is characterized in that in urea synthesis process, directly adds humic acids and tackiness agent, is that 70.0～99.7% urea soln mixes with concentration, produces humic acid urea, and each component is by following weight ratio preparation:
60～300 parts of 1～50 part of urea solns of 5～300 parts of tackiness agents of humic acids.
2, preparation process of humic urea as claimed in claim 1, it is characterized in that humic acids and tackiness agent with the pulverizing of 60～200 orders, directly evenly add after temperature mixes evaporation concentration, fluid jetting head granulation in proportion in 70～150 ℃, the urea soln of concentration 70.0～99.7%; Through the solid granulation, last drying is made finished product again.
3, preparation process of humic urea as claimed in claim 1, it is characterized in that when the molten urea soln of urea soln evaporation concentration to 95.0～99.7% passes through the liquid prilling spry, with blowing plant with humic acids and tackiness agent in proportion with the form of the mist that dusts, evenly spirt prilling tower and the granulation of fusing urea blended solid; Drying is made finished product then.
4, preparation process of humic urea as claimed in claim 1 is characterized in that with concentration being that 70.0～99.7% urea soln is sprayed onto in the reaction tank of humic acids and tackiness agent in proportion, mixes, the solid granulation; Drying is made finished product then.
5, as any one described preparation process of humic urea of claim 2～4, it is characterized in that described solid granulation is the disk granulation, or drum granulating, or wherein any of high tower prilling.
6,, it is characterized in that described humic acids is any or multiple combination wherein of coal humic acid, yellow humic acid, fulvic acid potassium, fulvic acid sodium, yellow humic acid zinc, potassium humate, calcium humate, Sodium salts humic acids, zinc humic acid, humic acids iron, ammonium humate, humic acids molybdenum as any one described preparation process of humic urea of claim 1～4.
7, preparation process of humic urea as claimed in claim 6 is characterized in that described coal humic acid is peat, brown coal, weathered coal.
8,, it is characterized in that described tackiness agent is the wherein any or multiple combination of fused(calcium magnesium)phosphate, bentonite, calcium-magnesium powder or Fluorspar Powder as any one described preparation process of humic urea of claim 1～4.
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| CNB200610052445XA CN100484906C (en) | 2006-07-13 | 2006-07-13 | Preparation of humic urea |
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| CNB200610052445XA CN100484906C (en) | 2006-07-13 | 2006-07-13 | Preparation of humic urea |
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| CN100484906C true CN100484906C (en) | 2009-05-06 |
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| CN102584498B (en) * | 2012-03-28 | 2013-10-23 | 中国农业科学院农业资源与农业区划研究所 | Humic acid urea and preparing method thereof |
| CN102838424A (en) * | 2012-10-08 | 2012-12-26 | 黑龙江北大荒农业股份有限公司浩良河化肥分公司 | Biological humic acid urea |
| CN103058735B (en) * | 2012-12-24 | 2014-12-17 | 德邦华源（北京）有机农业荒漠化治理技术发展有限公司 | Humus acid urea fertilizer and anhydrous preparation method thereof |
| CN103086809A (en) * | 2013-01-10 | 2013-05-08 | 山西昌鑫生物农业科技有限公司 | Compound-mixed-type humic acid urea and preparation method thereof |
| CN104058898B (en) * | 2014-06-18 | 2016-05-11 | 燕山大学 | A kind of humic acid coated urea and production method |
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| CN105330465A (en) * | 2015-08-07 | 2016-02-17 | 谭钧 | Process for preparing urea humate |
| CN105418267A (en) * | 2015-12-25 | 2016-03-23 | 福建省南平市建阳区好与佳生物制肥有限公司 | Preparation method of slow-release granular fertilizer |
| CN105819933A (en) * | 2016-06-05 | 2016-08-03 | 沂水县生态农业肥料研究所 | Production method for rotting urea organic fertilizer |
| CN106748576A (en) * | 2017-03-22 | 2017-05-31 | 新疆心连心能源化工有限公司 | A kind of humic acid potassium urea and preparation method thereof |
| CN106892754A (en) * | 2017-03-22 | 2017-06-27 | 新疆心连心能源化工有限公司 | Humic acid urea and preparation method thereof |
| CN106800477A (en) * | 2017-03-22 | 2017-06-06 | 新疆心连心能源化工有限公司 | A kind of humic acid potassium urea and preparation method thereof |
| CN107056432A (en) * | 2017-03-22 | 2017-08-18 | 新疆心连心能源化工有限公司 | Humic acid urea and preparation method thereof |
| CN107266152A (en) * | 2017-08-24 | 2017-10-20 | 中化吉林长山化工有限公司 | Suitable for the production method and system of urea plant and the high tower compound fertilizer of granulation tower |
| CN109970488A (en) * | 2017-12-28 | 2019-07-05 | 许传高 | The liquid fertilizer made using amino acid fermentation tail washings |
| CN108395352A (en) * | 2018-02-08 | 2018-08-14 | 龙蟒大地农业有限公司 | A kind of humic acid urea and preparation method thereof and the composition for being used to prepare humic acid urea |
| CN113698248A (en) * | 2021-10-11 | 2021-11-26 | 重庆建峰化工股份有限公司 | Efficient ecological urea fertilizer and preparation method thereof |
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