CN1266833A - New method for producing potassium sulfate type compound fertilizer by drum ammoniation - Google Patents
New method for producing potassium sulfate type compound fertilizer by drum ammoniation Download PDFInfo
- Publication number
- CN1266833A CN1266833A CN 99114379 CN99114379A CN1266833A CN 1266833 A CN1266833 A CN 1266833A CN 99114379 CN99114379 CN 99114379 CN 99114379 A CN99114379 A CN 99114379A CN 1266833 A CN1266833 A CN 1266833A
- Authority
- CN
- China
- Prior art keywords
- compound fertilizer
- potassium sulfate
- drum
- drum ammoniation
- ammonification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical class [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title claims abstract description 7
- 238000004176 ammonification Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 229910000343 potassium bisulfate Inorganic materials 0.000 claims abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 20
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 20
- 235000011151 potassium sulphates Nutrition 0.000 claims description 20
- -1 potassium sulfate compound Chemical class 0.000 claims description 19
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 229910021529 ammonia Inorganic materials 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000006396 nitration reaction Methods 0.000 claims description 6
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 239000002994 raw material Substances 0.000 abstract description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 abstract description 3
- JTNCEQNHURODLX-UHFFFAOYSA-N 2-phenylethanimidamide Chemical compound NC(=N)CC1=CC=CC=C1 JTNCEQNHURODLX-UHFFFAOYSA-N 0.000 abstract 1
- 238000011031 large-scale manufacturing process Methods 0.000 abstract 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 8
- 238000005453 pelletization Methods 0.000 description 4
- 239000001103 potassium chloride Substances 0.000 description 4
- 235000011164 potassium chloride Nutrition 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 208000006558 Dental Calculus Diseases 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G1/00—Mixtures of fertilisers belonging individually to different subclasses of C05
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A new method for producing potassium sulfate type compound fertilizer by drum ammoniation belongs to the technical field of fertilizer. The potassium bisulfate is used as a raw material, a rotary drum ammonification granulator and a dryer process are adopted, and a certain amount of nitrogen-containing raw material is added into returned materials to prepare the high-concentration potassium sulfate type compound fertilizer with the grade of 15-15. The product of the invention has low cost, is more popular with farmers, is suitable for large-scale production and has great practical significance.
Description
Process for preparing potassium sulfate type compound fertilizer by drum ammonification belongs to technical field of fertilizers, is specifically related to the potassium sulfate compound fertilizer novel method.
Existing potassium sulfate compound fertilizer production method mainly contains two kinds: 1, be the rotary drum ammoniation process of raw material with solid commodity vitriolate of tartar: this method is that vitriolate of tartar is added in the returning charge transportation equipment; together enter in the rotary drum ammoniation granulator with returning charge; at rotary drum ammoniation granulator and phosphorous nitrogenous slip mixing granulating and dry, obtain potassium sulfate compound fertilizer.Because of the price height of potassium sulfate, multiple fertilizer product cost is higher in this method; 2, potassium chloride transforms and to add the slurry-spraying pelletizing method: this method is to be converted into potassium hydrogen sulfate solution with potassium chloride at 90～110 ℃ times and strong sulfuric acid response, then with 20%P
2O
5Phosphoric acid mix, with the ammonia neutralization, utilize the granulation of slurry-spraying pelletizing machine and drying to obtain potassium sulfate compound fertilizer again.The shortcoming of this technology is that the potassium chloride conversion temperature is low, and the potassium chloride conversion ratio only is 80%, gained potassium hydrogen sulfate solution and 20%P
2O
5Phosphoric acid mix; slip is moisture more than 30% after the ammonification; the back segment operation can only be used the slurry-spraying pelletizing machine like this; and the maximum unit ability of slurry-spraying pelletizing machine is 130,000 ton/years at present; this just so that multiple fertile unit scale can not maximize; just need multi-series for the multiple fertile device more than 130,000 ton/years, thereby increased investment.And the potassium sulfate compound fertilizer produced of this method nitrogenous only 12%～12.5%.
The purpose of this invention is to provide the production potassium sulfate compound fertilizer novel method that meets national high-concentration compound fertilizer standard that a kind of production cost is low, product grade is high.
The present invention is achieved like this: it mainly adopts following technical proposal: (1) produces complex fertilizer product by wish requirement with stoichiometry with potassium hydrogen sulfate solution directly and 25%P
2O
5Above phosphoric acid mixes; (2) nitration mixture is pressurizeed in being pumped into tubular reactor, with the ammonia neutralization, make the higher potassium sulfate compound fertilizer slip of concentration, the pressure that nitration mixture and ammonia enter tubular reactor is controlled at 3～9MPa; (3) adopt drum ammoniation granulating machine+drying machine technology, the ammonification slip that concentration is higher is sprayed on the bed of drum ammoniation granulating machine, passes into gas ammonia in drum ammoniation granulating machine material bed bottom and continues ammonification; (4) cover the higher nitrogenous fertilizer of nitrogen content by the crops demand on the solid apronbelt, return in the drum ammoniation granulating machine, general material is 4～6 times; (5) the potassium sulfate compound fertilizer material from drum ammoniation granulating machine slips into drying machine, uses hot furnace-heated; (6) dried potassium sulfate compound fertilizer obtains the potassium sulfate compound fertilizer finished product through fragmentation, screening, cooling step.
Embodiment: (1) according to the product requirement of wish production composite fertilizer with stoichiometry with potassium hydrogen sulfate solution directly and 25%P
2O
5Above phosphoric acid mixes; (2) nitration mixture is pressurizeed in being pumped into tubular reactor, with the ammonia neutralization, make the higher potassium sulfate compound fertilizer slip of concentration, the pressure that nitration mixture and ammonia enter tubular reactor is controlled at 7～8MPa; (3) adopt drum ammoniation granulating machine+drying machine technology, the ammonification slip that concentration is higher is sprayed on the bed of drum ammoniation granulating machine, passes into gas ammonia in drum ammoniation granulating machine material bed bottom and continues ammonification; (4) cover urea by the crops demand on the solid apronbelt, return in the drum ammoniation granulating machine, general material is 4～6 times; (5) the potassium sulfate compound fertilizer material from drum ammoniation granulating machine slips into drying machine, uses hot furnace-heated; (6) dried potassium sulfate compound fertilizer obtains the potassium sulfate compound fertilizer finished product through fragmentation, screening, cooling step.The product grade that present embodiment makes is 15-15-15.
The present invention is raw material because of using sal enixum, and product cost is low, and strong competitive power is arranged; The product grade that the present invention makes is 15-15-15, meets national high-concentration compound fertilizer standard, can welcome by the peasant, and prior art products is nitrogenous less than 12.5%; Adopt rotary drum ammoniation-granulation technology, unit throughput can reach more than 200,000 tons/year, reduced production cost again, improved the scale that single series is produced the potassium sulfate compound fertilizer device, for the maximization of device creates conditions, and the transformation that the domestic existing number overlaps large-scale rotary drum ammonification production line had very realistic meanings.
Claims (1)
1, a kind of process for preparing potassium sulfate type compound fertilizer by drum ammonification is characterized in that it mainly adopts following technical proposal: (1) produces complex fertilizer product by wish requirement with stoichiometry with potassium hydrogen sulfate solution directly and 25%P
2O
5Above phosphoric acid mixes; (2) nitration mixture is pressurizeed in being pumped into tubular reactor, with the ammonia neutralization, make the higher potassium sulfate compound fertilizer slip of concentration, the pressure that nitration mixture and ammonia enter tubular reactor is controlled at 3～9MPa; (3) adopt drum ammoniation granulating machine+drying machine technology, the ammonification slip that concentration is higher is sprayed on the bed of drum ammoniation granulating machine, passes into gas ammonia in drum ammoniation granulating machine material bed bottom and continues ammonification; (4) cover the higher nitrogenous fertilizer of nitrogen content by the crops demand on the solid apronbelt, return in the drum ammoniation granulating machine, general material is 4～6 times; (5) the potassium sulfate compound fertilizer material from drum ammoniation granulating machine slips into drying machine, uses hot furnace-heated; (6) dried potassium sulfate compound fertilizer obtains the potassium sulfate compound fertilizer finished product through fragmentation, screening, cooling step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114379 CN1266833A (en) | 1999-08-13 | 1999-08-13 | New method for producing potassium sulfate type compound fertilizer by drum ammoniation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114379 CN1266833A (en) | 1999-08-13 | 1999-08-13 | New method for producing potassium sulfate type compound fertilizer by drum ammoniation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1266833A true CN1266833A (en) | 2000-09-20 |
Family
ID=5277471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114379 Pending CN1266833A (en) | 1999-08-13 | 1999-08-13 | New method for producing potassium sulfate type compound fertilizer by drum ammoniation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1266833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106220278A (en) * | 2016-07-27 | 2016-12-14 | 中化化肥有限公司成都研发中心 | A kind of additive improving potassium sulfate compound fertilizer granule strength and the preparation method of high-strength complex Hefei granule |
-
1999
- 1999-08-13 CN CN 99114379 patent/CN1266833A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106220278A (en) * | 2016-07-27 | 2016-12-14 | 中化化肥有限公司成都研发中心 | A kind of additive improving potassium sulfate compound fertilizer granule strength and the preparation method of high-strength complex Hefei granule |
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| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |