CN1168874A - Process for producing potassium sulfate and ammonium phosphate compound fertilizer - Google Patents
Process for producing potassium sulfate and ammonium phosphate compound fertilizer Download PDFInfo
- Publication number
- CN1168874A CN1168874A CN 97105690 CN97105690A CN1168874A CN 1168874 A CN1168874 A CN 1168874A CN 97105690 CN97105690 CN 97105690 CN 97105690 A CN97105690 A CN 97105690A CN 1168874 A CN1168874 A CN 1168874A
- Authority
- CN
- China
- Prior art keywords
- potassium
- ammonium phosphate
- phosphorus
- slurry
- potassium bisulfate
- 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
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000003337 fertilizer Substances 0.000 title claims abstract description 25
- 239000004254 Ammonium phosphate Substances 0.000 title claims abstract description 12
- 229910000148 ammonium phosphate Inorganic materials 0.000 title claims abstract description 12
- 235000019289 ammonium phosphates Nutrition 0.000 title claims abstract description 12
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 title abstract 2
- 229910052939 potassium sulfate Inorganic materials 0.000 title abstract 2
- 235000011151 potassium sulphates Nutrition 0.000 title abstract 2
- -1 ammonium phosphate compound Chemical class 0.000 title description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 15
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 14
- 239000011591 potassium Substances 0.000 claims abstract description 14
- 229910000343 potassium bisulfate Inorganic materials 0.000 claims abstract description 14
- JTNCEQNHURODLX-UHFFFAOYSA-N 2-phenylethanimidamide Chemical compound NC(=N)CC1=CC=CC=C1 JTNCEQNHURODLX-UHFFFAOYSA-N 0.000 claims abstract description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011574 phosphorus Substances 0.000 claims abstract description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 12
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 6
- 239000004202 carbamide Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract 4
- 235000011164 potassium chloride Nutrition 0.000 claims abstract 2
- 239000001103 potassium chloride Substances 0.000 claims abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract 2
- 150000001875 compounds Chemical class 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims 4
- 238000005453 pelletization Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 2
- HMENBRQZDJMLJF-UHFFFAOYSA-M azanium potassium hydrogen phosphate sulfuric acid Chemical compound [NH4+].[K+].OP([O-])([O-])=O.OS(O)(=O)=O HMENBRQZDJMLJF-UHFFFAOYSA-M 0.000 abstract description 2
- 238000006386 neutralization reaction Methods 0.000 abstract description 2
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- SWVQJNOKQGGNKF-UHFFFAOYSA-N [N+](=[N-])=[P] Chemical compound [N+](=[N-])=[P] SWVQJNOKQGGNKF-UHFFFAOYSA-N 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention belongs to the technical field of chemical industry. The potassium sulfate-ammonium phosphate composite fertilizer production process is one technological process of producing three-element high concentration composite fertilizer containing nitrogen, phosphorus and potassium. The technological process includes the reaction of concentrated sulfuric acid and potassium chloride to produce potassium bisulfate and hydrogen chloride, physical mixing of the produced potassium bisulfate solution and solid powdered ammonium phosphate to produce composite slurry, ammonia neutralization, adding partial urea to produce composite slurry of potassium sulfate, ammonium phosphate and urea, and spraying granulation to obtain the composite N, P and K fertilizer.
Description
The invention belongs to the technical field of chemical industry. The process for producing potassium sulfate-ammonium phosphate compound fertilizer is a process for preparing nitrogen, phosphorus and potassium three-element high-concentration compound fertilizer.
At present, the production process for producing the nitrogen, phosphorus and potassium three-element high-concentration agricultural fertilizer at home and abroad mainly comprises two types:
1. chemical synthesis process, namely a process for producing a nitrogen, phosphorus and potassium three-element high-concentration fertilizer, which is called chemical synthesis method, and theproduced fertilizer is usually called compound fertilizer; the process has the advantages of large investment and low cost.
2. A physical synthesis process method, namely a process for producing a nitrogen, phosphorus and potassium three-element high-concentration fertilizer, which is called a physical synthesis method, and the produced fertilizer is usually called a compound fertilizer; the process has the advantages of low investment and high cost.
The invention aims to provide a production process method of a nitrogen, phosphorus and potassium three-element high-concentration compound fertilizer with low investment and low production cost from the actual production, which has partial chemical synthesis and partial physical synthesis, so that the process is called a compound fertilizer production process method. The fertilizer produced by the process is called compound fertilizer, the proportion of the three elements is convenient to regulate and control, the quality is ensured, the production cost is low, and the appearance quality of the product is good.
A process for preparing the composite fertilizer of potassium sulfate-ammonium phosphate includes such steps as mixing potassium bisulfate with powdered ammonium phosphate at 70-90 deg.C, stirring to obtain mixed slurry, neutralizing with ammonia to obtain pH value in the range of 5-6, adding urea to increase nitrogen content, and spray granulating.
The chemical reaction and physical synthesis process in the above process is as follows:
wherein HCi enters a circulating tower to prepare dilute hydrochloric acid.
2, physical mixing process:
KSO4+KHSO4aqueous solution + solid NH4H2PO4→ formation of a slurry of the mixture during stirring at a temperature of 70 to 90 ℃.
3, a neutralization process:
In the chemical reaction and physical process, no matter the relationship between various substances, only the proportional relationship that the proportional contents of the three elements of diazo, phosphorus and potassium respectively reach 15 percent of the total amount is noted.
The invention realizes that the potassium bisulfate liquid slurry obtained by the common process method is mixed with the powdery solid ammonium phosphate after being crushed, and then the mixture is neutralized by ammonia, and part of solid urea is added to prepare the liquid slurry which is granulated by spraying to obtain the nitrogen, phosphorus and potassium three-element high-concentration compound fertilizer.
Claims (3)
- A process method for producing a nitrogen, phosphorus and potassium three-element compound fertilizer by physically stirring a potassium bisulfate aqueous solution and solid powdery ammonium phosphate. The method is characterized in that concentrated sulfuric acid and potassium chloride are reacted at the temperature of 92-110 ℃ to generate potassium bisulfate solution, the potassium bisulfate solution is dissolved in water, the potassium bisulfate solution and the solid powdery ammonium phosphate are physically mixed in the stirring process, ammonia is neutralized, partial solid urea is added to prepare nitrogen, phosphorus and potassium three-element composite liquid slurry, and the nitrogen, phosphorus and potassium three-element high-concentration compound fertilizer is obtained by spraying and granulating.
- The process for producing a high-concentration compound fertilizer containing three elements of nitrogen, phosphorus and potassium by physically mixing an aqueous solution of potassium bisulfate with solid powdery ammonium phosphate in the stirring process according to claim 1, wherein the crushed powdery ammonium phosphate is subjected to physical mixing gradually in the continuous stirring process while the aqueous solution of potassium bisulfate is kept at a temperature of 80-90 ℃, thereby forming a slurry of a mixed aqueous solution of potassium bisulfate and ammonium phosphate.
- The process of producing high concentration composite fertilizer of three elements of ammonia, phosphorus and potassium with the mixture of potassium bisulfate solution and solid powdered ammonium phosphate as set forth in claim 1 includes the steps of neutralizing the slurry of potassium bisulfate and ammonium phosphate obtained from chemical reaction with ammonia, adding urea to obtain three-element slurry, spraying slurry and pelletizing to obtain high concentration composite fertilizer of three elements of nitrogen, phosphorus and potassium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 97105690 CN1168874A (en) | 1997-02-19 | 1997-02-19 | Process for producing potassium sulfate and ammonium phosphate compound fertilizer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 97105690 CN1168874A (en) | 1997-02-19 | 1997-02-19 | Process for producing potassium sulfate and ammonium phosphate compound fertilizer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN1168874A true CN1168874A (en) | 1997-12-31 |
Family
ID=5168001
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 97105690 Pending CN1168874A (en) | 1997-02-19 | 1997-02-19 | Process for producing potassium sulfate and ammonium phosphate compound fertilizer |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN1168874A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1075480C (en) * | 1999-01-12 | 2001-11-28 | 铜陵化学工业集团公司铜官山化工总厂 | Method for producing sulfonyl nitrogen-potassium compound fertilizer |
CN102633537A (en) * | 2012-04-23 | 2012-08-15 | 马光明 | Method for producing watersoluble potassium sulfate |
CN101928165B (en) * | 2009-06-26 | 2012-09-05 | 朱德浩 | Method and device for preparing monopotassium phosphate and potassium ammonium phosphate by multistage steam injection |
-
1997
- 1997-02-19 CN CN 97105690 patent/CN1168874A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1075480C (en) * | 1999-01-12 | 2001-11-28 | 铜陵化学工业集团公司铜官山化工总厂 | Method for producing sulfonyl nitrogen-potassium compound fertilizer |
CN101928165B (en) * | 2009-06-26 | 2012-09-05 | 朱德浩 | Method and device for preparing monopotassium phosphate and potassium ammonium phosphate by multistage steam injection |
CN102633537A (en) * | 2012-04-23 | 2012-08-15 | 马光明 | Method for producing watersoluble potassium sulfate |
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C06 | Publication | ||
PB01 | Publication | ||
C01 | Deemed withdrawal of patent application (patent law 1993) | ||
WD01 | Invention patent application deemed withdrawn after publication |