CN102503648B - Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device - Google Patents
Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device Download PDFInfo
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- CN102503648B CN102503648B CN 201110388761 CN201110388761A CN102503648B CN 102503648 B CN102503648 B CN 102503648B CN 201110388761 CN201110388761 CN 201110388761 CN 201110388761 A CN201110388761 A CN 201110388761A CN 102503648 B CN102503648 B CN 102503648B
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- ammonium phosphate
- npk
- phosphate sulfate
- phosphoric acid
- sulfuric acid
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Abstract
The invention relates to a method for producing ammonium phosphate sulfate by an S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device. The method comprises the following steps of: sufficiently mixing phosphoric acid obtained after tail gas washing with concentrated sulfuric acid in a hydrogen-potassium conversion tank; introducing a mixture of sulfuric acid and phosphoric acid into a mixed acid storage tank; reacting the mixed acid with gas ammonia in a tubular reactor; neutralizing obtained slurry and concentrated sulfuric acid in a neutralizing tank; and finally carrying out slurry spraying and pelleting, drying and screening to obtain an ammonium phosphate sulfate compound fertilizer finished product, wherein the sulfuric acid is added into the system from two points respectively, and the total mass ratio of the added phosphoric acid (P2O5) to the added sulfuric acid is 1:(2.0-2.2). According to the method, the S-NPK device is used for producing the ammonium phosphate sulfate, so that the investment cost is lowered, the construction cycle is shortened, and the utilization ratio of the device is increased; and the diluted phosphoric acid, the concentrated sulfuric acid and the gas ammonia are directly taken as raw materials, so that the manufacture cost of the product is lowered, and the method has excellent economic and social benefits.
Description
Technical field
The present invention relates to a kind of technology of the S-NPK of utilization device compound fertilizer making, be specifically related to a kind of technology of the S-NPK of utilization device preparing compound ammonium phosphate sulfate fertilizer.
Background technology
Ammonium phosphate sulfate claims " little phosphorus ammonium " again, its nutrient regular size is 16-20-0, w(S) be 13%, available nutrient can be made adjustment according to demand, this product mainly is used in rape, sugarcane, radish etc. and needs on the more farm crop of sulphur, can improve crop quality, improve crop yield, improve fertilizer utilization ratio.
Phosphorus ammonium one ammonium and ammonium sulfate that traditional ammonium phosphate sulfate compound fertilizer production technology is bought with market are that raw material granulation after physical agitation is mixed makes, and belong to physical method; Along with the development of extensive use of chemical fertilizer industry and the innovation of technology, also be used for producing ammonium phosphate sulfate and having obtained success after having many producers to utilize existing DAP production equipment to transform, this technology belongs to chemical synthesis, but adopt this technology also to have some technology difficult problems, enter stable and slip solid content stable etc. that system ensures heat such as adding a large amount of water.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of method of utilizing the S-NPK device to produce compound manure fully is provided.
The object of the present invention is achieved like this: a kind of method of utilizing the S-NPK device to produce ammonium phosphate sulfate is characterized in that: comprise the steps:
(1) phosphoric acid after tail is washed fully mixes at hydrogen potassium conversion tank with the vitriol oil, and the temperature in the conversion tank is 95～100 ℃;
(2) pump reacted in tubular reactor with gas ammonia to tubular reactor after mixed sulphur, phosphorus nitration mixture entered the nitration mixture storage tank, and the temperature in the tubular reactor is 105～115 ℃;
(3) mixed slurry that obtains from tubular reactor neutralizes in neutralizing well with the vitriol oil again, can obtain compound ammonium phosphate sulfate fertilizer through whitewashing, drying, screening.
Described phosphoric acid quality is that 1: 2.0～2.2(is to contain P in the phosphoric acid with vitriol oil total amount ratio
2O
5: H
2SO
4Meter, quality).
The described vitriol oil is joined in the reactive system respectively by hydrogen potassium conversion tank and two points of neutralizing well.
Described gas ammonia add-on is to control by the degree that sulphur, phosphorus nitration mixture are neutralized, and degree of neutralization is controlled 1.1～1.2.
This method is utilized S-based compound fertilizer (S-NPK) production equipment fully.
A kind of technology of utilizing the S-NPK device to produce ammonium phosphate sulfate provided by the invention has following beneficial effect:
1, utilizes the S-NPK device to produce ammonium phosphate sulfate, reduced investment cost;
2, be raw material with the vitriol oil, dilute phosphoric acid and gas ammonia directly, reduced cost of goods manifactured, reduced the production cycle, have good economic and social benefit.
3, the vitriol oil adds system respectively by 2 points, is conducive to the operation control of system:
1. part is added in hydrogen potassium conversion tank, regulates when having avoided whole adding conversion tank, and the stability of a large amount of heat effects system of generation has reduced the corrosion to equipment simultaneously;
2. be added in neutralizing well, be used for regulating, controlling the product nutrient, the degree of neutralization of control slip.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is process flow diagram of the present invention.
Embodiment
Reaction equation of the present invention is as follows:
2NH
3+H
2SO
4=(NH
4)
2SO
4
2NH
3+H
3PO
4=(NH
4)
2HPO
4
NH
3+H
3PO
4=NH
4H
2PO
4
Utilize S-based compound fertilizer (S-NPK) production equipment, will wash the w(P after tail is washed from the tail gas of tubular reactor, neutralizing well and spray granulating through dilute phosphoric acid
2O
5 is effective) be 17～21% phosphoric acid and w(H
2SO
4) be that 98% vitriol oil fully mixes at hydrogen potassium conversion tank, temperature in the conversion tank is 95～100 ℃, pump was to tubular reactor after mixed sulphur, phosphorus nitration mixture entered the nitration mixture storage tank, react in tubular reactor with gas ammonia, temperature in the tubular reactor is 105～115 ℃, degree of neutralization control is 1.1-1.2, the mixed slurry that obtains from tubular reactor neutralizes in neutralizing well with the vitriol oil again, can obtain the compound ammonium phosphate sulfate fertilizer finished product through whitewashing drying machine, screening, sulfuric acid adds hydrogen potassium conversion tank and neutralizing well respectively by 2 points, and institute adds P
2O
5% is that 17～21% phosphoric acid qualities are 1: 2.0～2.2 with sulfuric acid total amount ratio.
Claims (3)
1. a method of utilizing the S-NPK device to produce ammonium phosphate sulfate is characterized in that: comprise the steps:
(1) phosphoric acid after tail is washed fully mixes at hydrogen potassium conversion tank with the vitriol oil, and the temperature in the conversion tank is 95～100 ℃;
(2) pump reacted in tubular reactor with gas ammonia to tubular reactor after mixed sulphur, phosphorus nitration mixture entered the nitration mixture storage tank, and the temperature in the tubular reactor is 105～115 ℃;
(3) mixed slurry that obtains from tubular reactor neutralizes in neutralizing well with the vitriol oil again, can obtain compound ammonium phosphate sulfate fertilizer through whitewashing, drying, screening;
Described phosphoric acid quality and vitriol oil total amount ratio are to contain P in the phosphoric acid
2O
5: H
2SO
4Quality count 1: 2.0～2.2; Described gas ammonia add-on is to control by the degree that sulphur, phosphorus nitration mixture are neutralized, and degree of neutralization is controlled 1.1～1.2.
2. the method for utilizing the S-NPK device to produce ammonium phosphate sulfate according to claim 1, it is characterized in that: the described vitriol oil is joined in the reactive system respectively by hydrogen potassium conversion tank and two points of neutralizing well.
3. the method for utilizing the S-NPK device to produce ammonium phosphate sulfate according to claim 1, it is characterized in that: this method is utilized S-based compound fertilizer S-NPK production equipment fully.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110388761 CN102503648B (en) | 2011-11-30 | 2011-11-30 | Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110388761 CN102503648B (en) | 2011-11-30 | 2011-11-30 | Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102503648A CN102503648A (en) | 2012-06-20 |
| CN102503648B true CN102503648B (en) | 2013-08-07 |
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| CN 201110388761 Active CN102503648B (en) | 2011-11-30 | 2011-11-30 | Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553758A (en) * | 2013-10-24 | 2014-02-05 | 瓮福（集团）有限责任公司 | Method and device for regulating nutrients of diammonium phosphate |
| CN108440056A (en) * | 2018-04-20 | 2018-08-24 | 湖北工业大学 | Composite fertilizer generates system |
| CN108484246A (en) * | 2018-05-29 | 2018-09-04 | 云南祥丰金麦化工有限公司 | A kind of prilling process producing chemical fertilizer |
| CN111943784A (en) * | 2020-09-17 | 2020-11-17 | 嘉施利（宜城）化肥有限公司 | Compound fertilizer production method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226544A (en) * | 1999-01-15 | 1999-08-25 | 铜陵化学工业集团公司磷铵厂 | Method and apparatus for producing diammonium phosphate with external circulation ammoniation reactor |
| CN1293171A (en) * | 2000-12-01 | 2001-05-02 | 上海化工研究院 | Process for preparing compound ammonium phosphate sulfate fertilizer in pipeline reactor |
| CN102249777A (en) * | 2011-04-28 | 2011-11-23 | 山东聊城鲁西化工第五化肥有限公司 | Production method for ammoniated sulfur-based compound fertilizer by chemical synthesis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935253B2 (en) * | 1980-07-25 | 1984-08-28 | 日立造船株式会社 | Fertilizer production method using pipe reactor and cooling drying tower |
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2011
- 2011-11-30 CN CN 201110388761 patent/CN102503648B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226544A (en) * | 1999-01-15 | 1999-08-25 | 铜陵化学工业集团公司磷铵厂 | Method and apparatus for producing diammonium phosphate with external circulation ammoniation reactor |
| CN1293171A (en) * | 2000-12-01 | 2001-05-02 | 上海化工研究院 | Process for preparing compound ammonium phosphate sulfate fertilizer in pipeline reactor |
| CN102249777A (en) * | 2011-04-28 | 2011-11-23 | 山东聊城鲁西化工第五化肥有限公司 | Production method for ammoniated sulfur-based compound fertilizer by chemical synthesis |
Non-Patent Citations (1)
| Title |
|---|
| JP昭57－27122A 1982.02.13 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Wanqing Inventor after: Wang Guangming Inventor after: Yang Zerong Inventor after: Xiong Yiman Inventor after: Li Yiping Inventor after: Chen Aiming Inventor after: Wu Jianhua Inventor after: Chen Kebing Inventor before: Li Wanqing Inventor before: Wang Guangming Inventor before: Yang Zerong Inventor before: Li Yiping Inventor before: Chen Aiming Inventor before: Wu Jianhua Inventor before: Chen Kebing |
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Free format text: CORRECT: INVENTOR; FROM: LI WANQING WANG GUANGMING YANG ZERONG LI YIPING CHEN AIMING WU JIANHUA CHEN KEBING TO: LI WANQING WANG GUANGMING YANG ZERONG XIONG YIMAN LI YIPING CHEN AIMING WU JIANHUA CHEN KEBING |
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