CN102079676A - Ammonium chloride anti-blocking agent composition and application - Google Patents
Ammonium chloride anti-blocking agent composition and application Download PDFInfo
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- CN102079676A CN102079676A CN2010105760135A CN201010576013A CN102079676A CN 102079676 A CN102079676 A CN 102079676A CN 2010105760135 A CN2010105760135 A CN 2010105760135A CN 201010576013 A CN201010576013 A CN 201010576013A CN 102079676 A CN102079676 A CN 102079676A
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- ammonium chloride
- caking agent
- blocking agent
- hard caking
- potassium
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Abstract
The invention relates to an ammonium chloride anti-blocking agent. The anti-blocking agent comprises maleic anhydride-acrylic polymer, potassium polyacrylate, potassium polyaspartate and dodecyl diphenyl ether sodium disulfonate. The anti-blocking agent has the advantages of low consumption, low cost, good performance, high efficiency, no pollution and the like, and is easy to use. The invention also relate to an application method of the anti-blocking agent in ammonium chloride production, namely the anti-blocking agent is diluted into 1.5 to 3 percent solution by using water, the solution is uniformly atomized and sprayed on an ammonium chloride conveyer belt in back of a separator, and the mass percentage of the added anti-blocking agent is 30-120*10<-6>g/L. When the anti-blocking agent is added into the dry or wet ammonium chloride by adopting the method, the blocking rate reaching the standard in 8 months can be ensured under an open air environment in atrocious weathers.
Description
Technical field
The invention belongs to agrochemicals fertilizer additive field, be specifically related to a kind of agricultural ammonium chloride anti-hard caking agent and the application in the anti-caking of preparation ammonium chloride thereof.
Background technology
At present, nearly 1,000 ten thousand tons of the ammonium chloride annual production of China's connection alkali industry is refined into the industrial grade ammonium chloride on a small quantity except that having, and is most of as nitrogenous fertilizer.Agricultural ammonium chloride can be used for composite fertilizer, also can directly apply fertilizer.
Because the variation of factors such as the temperature during the ammonium chloride accumulating, humidity, pressure, easily produce the situation of dissolution-recrystallization of dissolution-crystallization-more repeatedly on ammonia chloride crystal surface, make to produce " brilliant bridge " phenomenon between crystal, cause caking, thereby bring great inconvenience to use.Because agricultural is seasonal and the industrial production continuity this to contradiction, objectively have nearly half the agricultural ammonium chloride of directly executing demand greatly to be arranged to depositing eight months non-caking efficient anti-hard caking agents.
Be head it off, former Inst. of Alkali-Preparing Industry, Ministry of Chemical Industry (predecessor of Dalian Chemical Research ﹠. Design Inst.), be devoted to the research of ammonium chloride anti-caking agent since nineteen fifty generation, once released fatty acid and fatty amine anti-hard caking agent, the ammonium chloride from caking problem was eased.But the preventing blocking effect of fatty acid anti-hard caking agent is not good enough, and the anti-caking time is short; Though the preventing blocking effect of fat amine anti-hard caking agent is good, is eliminated owing to this material has carcinogenic suspicion.In addition, the ammonium chloride enterprise that has adopts Sodium dodecylbenzene sulfonate to do anti-hard caking agent.
Chinese invention patent prospectus CN101112997A (Beijing Huamei Tianyi Technology Development Co., Ltd.. a kind of ammonium chloride anti-caking agent and the application .2008-01-30 in the anti-caking of preparation ammonium chloride thereof) composition of a kind of aspartic acid polymkeric substance with the simulation superoxide dismutase be provided; although it is very desirable from the angle of protection environment and raising fertilizer efficiency; but the addition of this anti-hard caking agent is big; it prepares complicated, the cost height.
Summary of the invention
The object of the present invention is to provide a kind of ammonium chloride anti-caking agent that addition is few, cost is low and the anti-caking time is long that is used for doing agricultural or wet agriculture ammonium chloride.
The contriver has discovered that through a large amount of tests a kind of ammonium chloride anti-caking agent composition can reach this purpose.Its main component comprises the maleic acid anhydride-propenoic acid polymkeric substance, polyacrylic acid potassium, poly-aspartic potassium and disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, their weight ratio are 1.0～0.5: 1.0～1.5: 1.0～1.5: 0.005～0.01, be preferably 1: 1: 1: 0.01.
The molecular formula of described maleic acid anhydride-propenoic acid polymkeric substance is (C
3H
4O
2)
m(C
4H
2O
3)
m(C
4H
4O
4)
n, sticking all relative molecular mass is 500～1000, and wherein m is 2～100, and n is 2～100; The molecular formula of polyacrylic acid potassium is (CH
2CHCOOK)
n, sticking all relative molecular mass is 2000～4000, wherein n is 2～80; The molecular formula of poly aspartic acid sylvite is (C
4H
4O
3NK)
n, sticking all relative molecular mass is 2000～6000, wherein n is 20～80; The molecular formula of disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate is C
24H
32Na
22O
7S
2This is than applicable scope, and molecular weight is too big, and viscosity is big, makes the ammonium chloride crystals bonding easily.
Described poly-aspartic potassium is a kind of fertilizer synergistic agent, when playing certain anti-caking effect, can improve utilization rate of fertilizer.
Maleic acid anhydride-propenoic acid polymkeric substance, polyacrylic acid potassium and poly-aspartic potassium all have dissemination in the described anti-hard caking agent, when using it for the parcel ammonium chloride particle, three's complementation, collaborative mutually, form fine and close electrostatic double layer, make the intercrystalline repulsive force lasting, brilliant bridge is difficult to produce, and therefore the preventing blocking effect of ammonium chloride is significantly strengthened.But these three kinds of compositions have a common weakness, are exactly that diffusibility is poor.By adding disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, can obviously reduce the surface energy of the above-mentioned aqueous solution, increase diffusive force and speed, the moment that makes this aqueous solution droplet touch ammonium chloride particle spreads rapidly, make attached to the liquid film on the crystal grain thinner, evener, the corner of being arranged exhibits is more thorough, more abundant, thus make that anti-caking efficient is higher, consumption still less, better effects if.
Anti-hard caking agent composition of the present invention can be made into pulvis or aqueous solution formulation.
Another object of the present invention is to provide the application of this anti-hard caking agent in the anti-caking of preparation ammonium chloride, guarantees being evenly distributed of anti-hard caking agent, thereby reaches preventing blocking effect better.
The present invention also provides the addition means of this anti-hard caking agent: this anti-hard caking agent is added in the ammonium chloride with water dissolution or dilution back, can separate at the finished product of ammonium chloride or packaging process in add anti-hard caking agent.
Preferable methods of the present invention is: this anti-hard caking agent is with water dissolution or be diluted to the solution of 1.5%～3.0% (massfraction), preferred 2%～2.5%, be added on the separating machine post chlorization ammonium belt conveyor with spray after the atomising unit uniform atomizing.
In aforesaid method, how many addition of anti-hard caking agent in ammonium chloride is decided on ammonium chloride crystals granular size and storage condition, and crystalline particle is big, epigranular, and then dosage is few, on the contrary crystalline particle is thin or the inhomogeneous then dosage of granularity is big.In addition, storage condition good (as depositing in the storehouse) can add less; If storage condition poor (as outdoor storage) can be added.In a word, can adjust dosage according to user's actual conditions.Usually, the weight ratio of the weight of the anti-hard caking agent of interpolation and ammonium chloride is 30～120 * 10
-6G/L (massfraction)
Anti-hard caking agent of the present invention has following advantage:
(1) poly-aspartic potassium is a fertilizer synergistic agent, when playing certain anti-caking effect, can improve utilization rate of fertilizer.
Add with water dissolution or the atomizing spray of dilution back when (2) using, use simple, environmentally friendly.
(3) addition is few, and the interpolation massfraction of anti-hard caking agent only needs (30～120) * 10
-6Get final product, use cost is low.
(4) preventing blocking effect is good, and dried ammonium chloride or wet ammonium chloride all can reach 8 months non-caking good results.
Embodiment
Mode with embodiment further specifies the present invention below, but the present invention is not limited to these embodiment.
The technical indicator of used each main ingredient is as follows in the anti-hard caking agent composition of the present invention.
(1) maleic acid anhydride-propenoic acid polymkeric substance: solid content 30%, pH value 2～3, relative molecular mass 500～1000, colourless or light yellow transparent liquid;
(2) polyacrylic acid potassium: solid content 30%, pH value≤7, relative molecular mass 2000～6000 is colourless or faint yellow transparent;
(3) poly-aspartic potassium: solid content 30%, pH value≤9.5, relative molecular mass 3000～7000, transparent Najran Red;
(4) disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate: solid content 45%, density 1.161 (25 ℃), viscosity (25 ℃, concentration 0.1%) 0.145Pa/s, amber redness.
Embodiment 1
Take by weighing above-mentioned maleic acid anhydride-propenoic acid polymkeric substance 1kg, polyacrylic acid potassium 1kg, poly-aspartic potassium 1kg (the solid content weight ratio is 1: 1: 1), disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate 1.5g (for composition total weight 0.05%) pour mixing tank into and mix, ammonium chloride anti-caking agent composition 1.
Embodiment 2
Take by weighing above-mentioned maleic acid anhydride-propenoic acid polymkeric substance 0.5kg, polyacrylic acid potassium 1.5kg, poly-aspartic potassium 1.5kg (solid content weight ratio 0.5: 1.5: 1.5), with disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate 3.5 gram (be composition total weight 0.1%), pour mixing tank into and mix, get ammonium chloride anti-caking agent composition 2.
Embodiment 3
Take by weighing above-mentioned maleic acid anhydride-propenoic acid polymkeric substance 0.8kg, polyacrylic acid potassium 1.2kg, poly-aspartic potassium 0.8kg (solid content weight ratio 0.8: 1.2: 0.8), with disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate 2g (be composition total weight 0.07%), pour mixing tank into and mix, get ammonium chloride anti-caking agent composition 3.
Embodiment 4 uses and anti-caking test
15 times of the foregoing description 1～3 gained ammonium chloride anti-caking agent composition 1～3 dilute with waters, working substance concentration is 2% (massfraction), with the dilution of dissolving bucket, atomize with atomizer, atomizing back spray is added to behind the ammonium chloride separating centrifuge on the rotary conveyor, and according to the dosage difference, wet ammonium chloride sample is taken a sample in dried ammonium stokehold respectively, dried ammonium chloride sample is taken a sample behind dried ammonium stove respectively, respectively gets a sample that does not add anti-hard caking agent behind the stove of stokehold and be blank as a comparison.
The sample of obtaining is packed in the woven bag of inner lining plastic bag, seals mouth, carry out mark, place open storage lower floor, on press 10 bags of high ammonium chlorides as heavy burden, last overlapping colours bar cloth is in order to avoid Exposure to Sunlight sack bale broken.From at the beginning of 9 months by in by the end of April, the 2nd, through 8 totally months three seasons of spring autumn and winter, range of temperature-15～26 ℃.
Detect caking rate: press the measuring method of GB2946-92 shatter value, from 1 meter height, the free fall type of level is fallen on the hard plane with sample sack, and pros and cons respectively falls once, sieves 1 minute with Φ 5 sieves then, takes by weighing screenings weight.
Calculate caking rate with following formula:
x＝(m-m
1)/m
In the formula, the x-caking rate; m
1-stay the sample mass on the sieve, kg after sieving; Sample mass in the bag before m-sieves, kg.
Detected result sees Table 1.
Table 1 anti-hard caking agent addition and caking rate detect data
Test-results proves no matter dried, wet ammonium chloride adds anti-hard caking agent product of the present invention, and by after the using method interpolation of the present invention, under the environment, experiences harsh climate in the open, and range of temperature reaches-15～28 ℃, can guarantee that 8 months caking rates are up to standard.With the product of the present invention preparation be that a kind of consumption is few, cost is low, performance is good, efficient is high, easy use, free of contamination good product.It is ultimate attainment that this application method has performed to these product performance.
Claims (8)
1. ammonium chloride anti-caking agent, it is characterized in that described anti-hard caking agent comprises maleic acid anhydride-propenoic acid polymkeric substance, polyacrylic acid potassium, poly-aspartic potassium and disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate, their weight ratio are 1.0～0.5: 1.0～1.5: 1.0～1.5: 0.005～0.01.Maleic acid anhydride-propenoic acid polymkeric substance, polyacrylic acid potassium, poly-aspartic potassium play anti-caking effect, and disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate works the surface energy that reduces the aqueous solution, increase the effect of diffusive force and speed.
2. anti-hard caking agent as claimed in claim 1 is characterized in that, the weight ratio of described maleic acid anhydride-propenoic acid polymkeric substance, polyacrylic acid potassium, poly-aspartic potassium and disodium 4-dodecyl-2,4 '-oxydibenzenesulfonate is 1.0: 1.0: 1.0: 0.005.
3. anti-hard caking agent as claimed in claim 1 is characterized in that, the molecular formula of described maleic acid anhydride-propenoic acid polymkeric substance is (C
3H
4O
2)
m(C
4H
2O
3)
m(C
4H
4O
4)
n, sticking all relative molecular mass is 500～1000, and wherein m is 2～100, and n is 2～100; The molecular formula of polyacrylic acid potassium is (CH
2CHCOOK)
n, sticking all relative molecular mass is 2000～4000, wherein n is 2～80; The molecular formula of poly aspartic acid sylvite is (C
4H
4O
3NK)
n, sticking all relative molecular mass is 2000～6000, wherein n is 20～80.
4. the application of each described anti-hard caking agent in the anti-caking of preparation ammonium chloride in the claim 1～3 is characterized in that, anti-hard caking agent is added in the ammonium chloride after with water dissolution.
5. the described application of claim 4 is characterized in that, anti-hard caking agent is diluted with water to the solution of 1.5%～3% (massfraction), and spray is added on the separating machine post chlorization ammonium belt conveyor after the uniform atomizing.
6. application as claimed in claim 5 is characterized in that, anti-hard caking agent is diluted with water to 2%～2.5% solution.
7. application as claimed in claim 4 is characterized in that, the addition of anti-hard caking agent is 30～120 * 10 in the ammonium chloride
-6G/L (anti-hard caking agent effective constituent and ammonium chloride mass ratio).
8. as claim 5 or 6 described application, it is characterized in that the addition of anti-hard caking agent is 30～120 * 10 in the ammonium chloride
-6G/L (massfraction, the same).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502705A (en) * | 2011-11-02 | 2012-06-20 | 自贡市鸿康实业有限公司 | Ammonium chloride fluid loss agent and preparation method thereof |
| CN102746065A (en) * | 2012-07-13 | 2012-10-24 | 湖北海力化工科技有限公司 | Ammonium chloride anticaking agent and preparation method thereof |
| CN102757284A (en) * | 2012-06-19 | 2012-10-31 | 阜阳富瑞雪化工科技有限公司 | Compound fertilizer anti-agglomeration agent as well as preparation method and applications thereof |
| CN102786358A (en) * | 2012-08-29 | 2012-11-21 | 湖北富邦科技股份有限公司 | Water-soluble anti-caking agent and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502705A (en) * | 2011-11-02 | 2012-06-20 | 自贡市鸿康实业有限公司 | Ammonium chloride fluid loss agent and preparation method thereof |
| CN102502705B (en) * | 2011-11-02 | 2013-06-19 | 四川鸿康药物化学有限公司 | Ammonium chloride fluid loss agent and preparation method thereof |
| CN102757284A (en) * | 2012-06-19 | 2012-10-31 | 阜阳富瑞雪化工科技有限公司 | Compound fertilizer anti-agglomeration agent as well as preparation method and applications thereof |
| CN102746065A (en) * | 2012-07-13 | 2012-10-24 | 湖北海力化工科技有限公司 | Ammonium chloride anticaking agent and preparation method thereof |
| CN102746065B (en) * | 2012-07-13 | 2013-11-06 | 湖北海力化工科技有限公司 | Ammonium chloride anticaking agent and preparation method thereof |
| CN102786358A (en) * | 2012-08-29 | 2012-11-21 | 湖北富邦科技股份有限公司 | Water-soluble anti-caking agent and preparation method thereof |
| CN102786358B (en) * | 2012-08-29 | 2014-10-22 | 湖北富邦科技股份有限公司 | Water-soluble anti-caking agent and preparation method thereof |
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| CN102079676B (en) | 2013-10-16 |
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