CN102219591B - Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation - Google Patents
Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation Download PDFInfo
- Publication number
- CN102219591B CN102219591B CN 201110132280 CN201110132280A CN102219591B CN 102219591 B CN102219591 B CN 102219591B CN 201110132280 CN201110132280 CN 201110132280 CN 201110132280 A CN201110132280 A CN 201110132280A CN 102219591 B CN102219591 B CN 102219591B
- Authority
- CN
- China
- Prior art keywords
- tank
- acid
- neutralization
- nitration mixture
- spray granulation
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention relates to a production method of a fertilizer, in particular to a method of producing a sulfur-based high nitrogen composite fertilizer by spray granulation, comprising the following steps: phosphoric acid added in an acid mixing intermediate tank is subject to preneutralization in an ammonification reactor, ammonia gas is added during the preneutralization, neutralized ammonium phosphate is subject to clarification in a clarification tank, impurities is removed from the bottom of the clarification tank to produce powdery monoammonium phosphate, clear liquid overflowed from the upper part of the clarification tank is conveyed through a pump to the acid mixing intermediate tank, after the removal of phosphoric acid impurities, the nutrient of the composite fertilizer is on the high side, then excessive sulfuric acid is added in a hydrogen/potassium reaction tank by calculation to obtain potassium bisulfate with increasing nitrogen content and reducing the total nutrient, potassium bisulfate is mixed with ammonium phosphate in the acid mixing intermediate tank into mixed acid, then ammonia gas is inserted in a tubular reactor to react, reacted slurry is subject to spray granulation directly without adding urea. The invention has the advantages of simple technology, high output and high utilization of ammonia.
Description
Technical field
The present invention relates to a kind of production method of chemical fertilizer, specifically a kind of spray granulating is produced the method for sulfenyl high-nitrogen compound fertilizer.
Background technology
Nitrogenous fertilizer is the chemical fertilizer that is in great demand in the agriculture production.And generally all require now to produce high-nitrogen compound fertilizer, its production method generally adopts spray granulating technology.The slip preparation flow of tradition spray granulating technical process is as shown in Figure 1: it is sulfuric acid and Repone K to be joined reaction generates sal enixum in the reactive tank, add and deliver to tubular reactor behind the phosphoric acid and feed ammonia and react, react afterwards, adding urea carries out granulation.
Because of the market requirement, need to produce the sulfenyl high nitrogen fertilizer in recent years.Producing high nitrogen fertilizer with existing spray granulating production equipment can not finish, each producer of the whole nation generally uses and add urea or fertiliser granulates surface spraying urea soln in slip, the former is difficult for granulation, and it is bigger to cause mains system to meet, and output lacks 30% than low nitrogenous fertilizer; Latter's method makes the fertilizer insufficient strength, and the short period of time is deposited easy caking, easily efflorescence after the time is long.The method of therefore inventing a kind of spray granulating production sulfenyl high-nitrogen compound fertilizer is highly profitable.
Summary of the invention
Purpose of the present invention is exactly the defective at prior art, the method that provides a kind of spray granulating to produce the sulfenyl high-nitrogen compound fertilizer, the inventive method output height, ammonia utilization ratio height.
Technical scheme of the present invention is achieved in that it is that the phosphoric acid that will add the nitration mixture medial launder carries out earlier pre-neutralization in ammoniation reactor, add ammonia during pre-neutralization, ammonium phosphate after the neutralization enters clarifying tank and clarifies, impurity removes to produce powdery ammonium fertilizer from the eliminating of clarifying tank bottom, clear liquid is overflowed through pump delivery to the nitration mixture medial launder by clarifying tank top, after having removed phosphoric acid impurity, the nutrient of compound manure is with higher, excessive adding sulfuric acid generates sal enixum in hydrogen potassium reaction through calculating then, additional sulfuric acid can play the function that improves nitrogen content and reduce total nutrient, sal enixum and ammonium phosphate are mixed into nitration mixture in the nitration mixture medial launder, react again at feeding ammonia in tubular reactor then, the slurry that has reacted directly carries out spray granulating, need not add urea in slip.
The present invention has the advantage that technology is simple, output is high, the ammonia utilization ratio is high.
Description of drawings
Fig. 1 is the process flow sheet of prior art
Fig. 2 is process flow sheet of the present invention
Embodiment
Below in conjunction with accompanying drawing the present invention is described further:
As shown in Figure 2, the present invention is that the phosphoric acid that will add the nitration mixture medial launder carries out earlier pre-neutralization in ammoniation reactor, add ammonia during pre-neutralization, ammonium phosphate after the neutralization enters clarifying tank and clarifies, impurity removes to produce powdery ammonium fertilizer from the eliminating of clarifying tank bottom, clear liquid is overflowed through pump delivery to the nitration mixture medial launder by clarifying tank top, after having removed phosphoric acid impurity, the nutrient of compound manure is with higher, excessive adding sulfuric acid generates sal enixum in hydrogen potassium reaction through calculating then, additional sulfuric acid can play the function that improves nitrogen content and reduce total nutrient, sal enixum and ammonium phosphate are mixed into nitration mixture in the nitration mixture medial launder, react at feeding ammonia in tubular reactor then, the slurry that has reacted directly carries out spray granulating, need not add urea in slip again.
Claims (1)
1. a spray granulating is produced the method for sulfenyl high-nitrogen compound fertilizer, it is that the phosphoric acid that will add the nitration mixture medial launder carries out earlier pre-neutralization in ammoniation reactor, add ammonia during pre-neutralization, monoammonium phosphate slurry solution after the neutralization enters clarifying tank and clarifies, impurity removes to produce powdery monoammonium phosphate from the eliminating of clarifying tank bottom, clear liquid is overflowed through pump delivery to the nitration mixture medial launder by clarifying tank top, in the nitration mixture medial launder Yu from the sal enixum in the hydrogen potassium reaction, be mixed into nitration mixture then, carry out neutralization reaction feeding ammonia to the tubular reactor by pump delivery, the slurry that has reacted carries out spray granulating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110132280 CN102219591B (en) | 2011-05-19 | 2011-05-19 | Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110132280 CN102219591B (en) | 2011-05-19 | 2011-05-19 | Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102219591A CN102219591A (en) | 2011-10-19 |
| CN102219591B true CN102219591B (en) | 2013-09-11 |
Family
ID=44776327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110132280 Expired - Fee Related CN102219591B (en) | 2011-05-19 | 2011-05-19 | Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102219591B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539487B (en) * | 2012-07-10 | 2016-03-23 | 山东明瑞化工集团有限公司 | Produce the method for phosphorus ammonium |
| 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 |
| CN103787695A (en) * | 2014-02-21 | 2014-05-14 | 山东泰宝生物科技股份有限公司 | Ammonium polyphosphate agricultural fertilizer granulating technology |
| CN106831055A (en) * | 2017-02-22 | 2017-06-13 | 武汉中东磷业科技有限公司 | A kind of method that slurry-spraying pelletizing produces high nitrogen sulfur base water-flush compound fertilizer |
| CN106831139A (en) * | 2017-02-22 | 2017-06-13 | 武汉中东磷业科技有限公司 | A kind of method that slurry-spraying pelletizing produces nitrogen nitre sulfenyl water-flush compound fertilizer high |
| CN107141048B (en) * | 2017-07-12 | 2020-08-21 | 辽宁隆翔肥业有限公司 | Production method of guniting high-nitrogen fertilizer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078226A (en) * | 1993-04-19 | 1993-11-10 | 山东省临沂市化工总厂 | The production method of potassium sulphate type ternary composite fertilizer |
| CN1128247A (en) * | 1995-10-12 | 1996-08-07 | 湖南省郴州化肥总厂 | Continuous production method of potassium sulphate type ternary granulated complex fertilizer by using potassium chloride |
| CN101538027A (en) * | 2008-03-20 | 2009-09-23 | 江西贵溪化肥有限责任公司 | Production process for granular monoammonium phosphate |
-
2011
- 2011-05-19 CN CN 201110132280 patent/CN102219591B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078226A (en) * | 1993-04-19 | 1993-11-10 | 山东省临沂市化工总厂 | The production method of potassium sulphate type ternary composite fertilizer |
| CN1128247A (en) * | 1995-10-12 | 1996-08-07 | 湖南省郴州化肥总厂 | Continuous production method of potassium sulphate type ternary granulated complex fertilizer by using potassium chloride |
| CN101538027A (en) * | 2008-03-20 | 2009-09-23 | 江西贵溪化肥有限责任公司 | Production process for granular monoammonium phosphate |
Non-Patent Citations (2)
| Title |
|---|
| 两步氨化法生产硫基复合肥技术;高进华等;《磷肥与复肥》;20080115;第23卷(第1期);56-57 * |
| 高进华等.两步氨化法生产硫基复合肥技术.《磷肥与复肥》.2008,第23卷(第1期),56-57. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102219591A (en) | 2011-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102219591B (en) | Method of producing sulfur-based high nitrogen composite fertilizer by spray granulation | |
| CN103113139B (en) | Method for producing multivariate nitro compound fertilizer from wet-process phosphoric acid purification sludge | |
| CN102863267B (en) | Method for producing monoammonium phosphate and coproducing N-P binary compound fertilizer by using wet-process phosphoric acid | |
| CN103030129B (en) | Method for producing water-soluble ammonium potassium phosphate fertilizer with wet-method phosphoric acid | |
| CN102336599B (en) | Technological method for producing high-density composite fertilizer by ammonia-acid method | |
| CN101891504A (en) | Method for producing granular monoammonium phosphate with raffinate | |
| CN102030775B (en) | Method for producing N-(N-butyl)thiophosphoric triamide in channelization manner and special equipment | |
| CN101708832A (en) | Method for producing defluorinated ammonium phosphate | |
| CN102491297A (en) | Method for producing ammonium sulfate in S-NPK device by using refined phosphoric acid byproduct tail liquid | |
| CN104649298B (en) | The production method of ammonium sulfate | |
| CN101643204B (en) | Novel process for cleanly producing phosphate ammoniate fertilizer in the processing of phosphate rock powder | |
| CN100575316C (en) | Preparation technical method of urine sulfur radical composite fertilizer | |
| CN106831053A (en) | A kind of production method of graininess, function intensified type phosphorus containing magnesium ammonium | |
| CN102602904B (en) | Method for producing monoammonium phosphate from raffinate acid | |
| CN102503648B (en) | Method for producing ammonium phosphate sulfate by S-NPK (Sulfur-Containing Nitrogen-Phosphorus-Potassium Compounds) device | |
| CN101817706A (en) | Production method for potassium sulfate compound fertilizer | |
| CN102417385A (en) | Method for producing amino acid inorganic composite fertilizer by ammonia-acid process | |
| CN104030757A (en) | Method for producing compound fertilizer containing nitrate nitrogen potassium sulphate | |
| CN102674931A (en) | Method for co-producing ammonium sulfate phosphate fertilizer by using powder monoammonium phosphate production device | |
| CN105347321A (en) | Method for producing ammonium phosphate by using low-grade low-concentration raffinate acid | |
| CN102431985A (en) | Device for producing powdery monoammonium phosphate by using extraction spent acid | |
| CN105175029A (en) | Method for preparing phosphor (potassium) nitrate fertilizer by wet process phosphate sludge acid | |
| CN102126741A (en) | Method for producing nitro/S-based compound fertilizer and coproducing plaster | |
| CN101734973A (en) | Method for making particle compound fertilizer from potassium fluoaluminate | |
| CN102086131A (en) | Method for co-producing diammonium phosphate by powdery monoammonium phosphate production device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20140519 |