CN1169975A - Preparation of complex of humic acids and urea - Google Patents
Preparation of complex of humic acids and urea Download PDFInfo
- Publication number
- CN1169975A CN1169975A CN96108848A CN96108848A CN1169975A CN 1169975 A CN1169975 A CN 1169975A CN 96108848 A CN96108848 A CN 96108848A CN 96108848 A CN96108848 A CN 96108848A CN 1169975 A CN1169975 A CN 1169975A
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- urea
- complex
- humic acids
- drying
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for preparing the complex of humic acid and urea includes such technological steps as stirring 5-10% ammonia water (80-200 portions), low-grade coal (10-90) and urea (90-10) at 60-105 deg. C or 2-6 hrs for complex reaction, settling to separate solid from liquid and drying, and features simple technology and low cost. The obtained organic complex salt and carbonyl additive can effectively suppress the decomposition speed of urea in soil and plant and increase the utilization rate of N and crops yield.
Description
The invention belongs to slow-release fertilizer, particularly a kind of preparation method of complex of humic acids and urea.
Urea is a kind of high nitrogen chemical fertilizer, directly uses separately decompose to run off too soon, and farm crop are very low to the absorption rate of nitrogen.For solving the complex of humic acids and urea that this difficult problem develops is a kind of slow released fertilizer, and it can improve absorption and the utilization of plant to nitrogen effectively.Japan's special permission bulletin clear 34,8375, clear 34,8376 provide a kind of employing liquefied ammonia and organic solvent to make medium respectively, the method for preparing complex of humic acids and urea under pressurized conditions, 15917 of Japan provide a kind of method that urea and formaldehyde condensation is prepared the insoluble solid mixture in humic acid solution.Above-mentioned first method is owing to need pressurized operation, operational condition harshness, product cost height; A kind of method in back is except that the cost height, and operational condition also is difficult to grasp, and very easily forms permanent insoluble macromolecular resin material in preparation process, makes the afunction of urea N.
The objective of the invention is to overcome the defective of aforesaid method, provide that a kind of processing condition are easy to control, product price is cheap, the preparation method of the complex of humic acids and urea of good water solubility.
The preparation of complex of humic acids and urea of the present invention is carried out as follows:
(1) complex reaction: getting concentration was ammoniacal liquor 80-200 part of 5-10%, crosses 60 purpose low-grade coal (being converted into pure humic acids) 10-90 part and urea 90-10 part, 60-105 ℃ of following continuously stirring reaction 2-6 hour;
(2) solid-liquid separation: with above-mentioned reactant cooling, sedimentation 24-36 hour, centrifugal removing slag;
(3) drying: the gained clear liquid pump carries out drying to spray-drying tower after the sedimentation, 130-150 ℃ of drying tower temperature in, temperature out 60-80 ℃.
Present method adopts raw material sources in distributed in nature low-grade coal widely, can be weathered coal, brown coal, peat etc., and its humic acids content will reach 40% (butt) at least, is preferably more than 60%.
With the prepared complex of humic acids and urea of method of the present invention, its major ingredient (weight percent) is:
This complex of humic acids and urea of moisture content 3-5 humic acids 20-80 blood urea nitrogen 9-37 can be used as fertilizer, plant growth promoter and fodder additives.
Compared with the prior art the present invention has following advantage:
1. humic acid material does not need expensive solvent and complicated processing unit, operational condition gentleness, low production cost without pre-treatment.
2. humic acids and urea fully react, and form organic complex salt and carbonyl adduct, have suppressed urea effectively at soil and the intravital decomposition rate of animal.
3. product is neutral, soluble in water.Humic acids and urea ratio can be regulated in significantly, make different dosage form, thereby have enlarged use range.Both can be used as slow, long-acting urea fertilizer, can make plant growth promoter (spray, soak seed, dress seed) again, also can be used as the fodder additives of ruminating animal (ox, sheep, deer, camel etc.).
4. production process three-waste free discharge residue obtainedly can be used for composite chemical fertilizer and as soil improvement agent, ammonia is recyclable to be utilized again.
Embodiment 1
The ammoniacal liquor 20001 of adding 5% in reactor, be crushed to 60 purpose weathered coals (containing humic acids 68.5%) 360Kg, urea 600Kg, mix, slowly be warming up to 95 ℃, after keeping 3 hours under this temperature, reactant is entered settling bowl, placed 48 hours, clear liquid is pumped into spray-drying tower, 140 ℃ of temperature ins, spraying drying gets solid-state complex of humic acids and urea under the condition that temperature out is 80 ℃, be called for short rotten urea product, product is through checking with GB 2441-81 and ZBG 21 005-87 methods, and group of products becomes: moisture content 3.82%, total nitrogen 36.87%, humic acids 26.47%.
Embodiment 2
Carry out pot experiment with embodiment 1 products therefrom.Every basin soil 8Kg, A group (experimental group) adds rotten urea (containing N36.8%) 1.33g, and B group (control group) such as adds at urea (nitrogenous 46%) 1.07g of nitrogen amount.For studying thing is millet, and test-results sees the following form.
Millet experiment in cultivation result
The heavy thousand seed weight output of plant height spike length fringe stimulation ratio nitrogen use efficiency grouping fertilising
The rotten urea 145.1 18.8 21.3 3.3 13.4 115.4 39.65B urea 138.1 17.8 18.4 2.9 11.7 100.0 22.45 of cm cm g g g/ basin % %A
The result shows, compares with the urea of nitrogen amounts such as executing, uses rotten urea volume increase 15.4%, and nitrogen use efficiency improves 17.2 percentage points (having a net increase of 76.6%).
Pot experiment was undertaken by academy of agricultural sciences, Shanxi Province soil and fertilizer institute April nineteen ninety-five～November.
Claims (2)
1. the preparation method of a complex of humic acids and urea is characterized in that carrying out as follows:
(1) complex reaction: getting concentration was ammoniacal liquor 80-200 part of 5-10%, crosses 60 purpose low-grade coal (being converted into pure humic acids) 10-90 part and urea 90-10 part, 60-105 ℃ of following continuously stirring reaction 2-6 hour;
(2) solid-liquid separation: with above-mentioned reactant cooling, sedimentation 24-36 hour, centrifugal removing slag;
(3) drying: gained clear liquid pump to spray-drying tower carries out drying after the sedimentation.
2. method according to claim 1 is characterized in that described low-grade coal is distributed in nature weathered coal, brown coal, a peat widely, and its humic acids content will reach 40% (butt) at least, is preferably more than 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96108848A CN1057985C (en) | 1996-07-08 | 1996-07-08 | Preparation of complex of humic acids and urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96108848A CN1057985C (en) | 1996-07-08 | 1996-07-08 | Preparation of complex of humic acids and urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1169975A true CN1169975A (en) | 1998-01-14 |
| CN1057985C CN1057985C (en) | 2000-11-01 |
Family
ID=5120124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96108848A Expired - Lifetime CN1057985C (en) | 1996-07-08 | 1996-07-08 | Preparation of complex of humic acids and urea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1057985C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153424A (en) * | 2011-05-17 | 2011-08-17 | 谭钧 | Novel method for preparing humic acid urea slow release fertilizer |
| CN102249814A (en) * | 2011-05-17 | 2011-11-23 | 谭钧 | Preparation method of liquid fertilizer with humic acid-urea complex as matrix |
| CN102260124A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid coated urea |
| CN102260111A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid-urea complex in aqueous medium |
| CN102260112A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid urea complex in urea meltwater medium |
| CN102408257A (en) * | 2011-08-08 | 2012-04-11 | 山东省农业科学院农业资源与环境研究所 | Microelement-introducing weathered coal activating agent as well as activation method and application |
| CN102557820A (en) * | 2011-12-13 | 2012-07-11 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-potassium humate compound fertilizer by microwave hot melting process |
| CN102557824A (en) * | 2011-12-13 | 2012-07-11 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-humate urea by microwave hot melting process |
| CN109970488A (en) * | 2017-12-28 | 2019-07-05 | 许传高 | The liquid fertilizer made using amino acid fermentation tail washings |
| CN111410573A (en) * | 2020-03-28 | 2020-07-14 | 桂宝友 | Preparation method of foliar fertilizer |
| CN114727623A (en) * | 2019-10-15 | 2022-07-08 | Upl有限责任公司 | Animal nutrition supplement |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381405C (en) * | 2005-06-15 | 2008-04-16 | 石河子市高新农业科学技术服务中心 | Fulvic acid complex liquid fertilizer and production method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1792411C (en) * | 1991-06-28 | 1993-01-30 | Гродненское производственное объединение "Азот" им.С.О.Притыцкого | Method for nitrogen manure preparing |
| CN1086506A (en) * | 1992-10-31 | 1994-05-11 | 李晓晏 | Complete-nutritive humic acid composite fertilizer |
-
1996
- 1996-07-08 CN CN96108848A patent/CN1057985C/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249814A (en) * | 2011-05-17 | 2011-11-23 | 谭钧 | Preparation method of liquid fertilizer with humic acid-urea complex as matrix |
| CN102260124A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid coated urea |
| CN102260111A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid-urea complex in aqueous medium |
| CN102260112A (en) * | 2011-05-17 | 2011-11-30 | 谭钧 | Method for preparing humic acid urea complex in urea meltwater medium |
| CN102153424A (en) * | 2011-05-17 | 2011-08-17 | 谭钧 | Novel method for preparing humic acid urea slow release fertilizer |
| CN102408257B (en) * | 2011-08-08 | 2013-04-10 | 山东省农业科学院农业资源与环境研究所 | Microelement-introducing weathered coal activating agent as well as activation method and application |
| CN102408257A (en) * | 2011-08-08 | 2012-04-11 | 山东省农业科学院农业资源与环境研究所 | Microelement-introducing weathered coal activating agent as well as activation method and application |
| CN102557820A (en) * | 2011-12-13 | 2012-07-11 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-potassium humate compound fertilizer by microwave hot melting process |
| CN102557824A (en) * | 2011-12-13 | 2012-07-11 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-humate urea by microwave hot melting process |
| CN102557824B (en) * | 2011-12-13 | 2013-07-31 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-humate urea by microwave hot melting process |
| CN102557820B (en) * | 2011-12-13 | 2013-12-04 | 福州超大现代农业发展有限公司 | Method for preparing organic titanium-potassium humate compound fertilizer by microwave hot melting process |
| CN109970488A (en) * | 2017-12-28 | 2019-07-05 | 许传高 | The liquid fertilizer made using amino acid fermentation tail washings |
| CN114727623A (en) * | 2019-10-15 | 2022-07-08 | Upl有限责任公司 | Animal nutrition supplement |
| CN111410573A (en) * | 2020-03-28 | 2020-07-14 | 桂宝友 | Preparation method of foliar fertilizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057985C (en) | 2000-11-01 |
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