CN101768025A - Method for producing sulfur fertilizer by diammonium phosphate device - Google Patents
Method for producing sulfur fertilizer by diammonium phosphate device Download PDFInfo
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- CN101768025A CN101768025A CN200910102970A CN200910102970A CN101768025A CN 101768025 A CN101768025 A CN 101768025A CN 200910102970 A CN200910102970 A CN 200910102970A CN 200910102970 A CN200910102970 A CN 200910102970A CN 101768025 A CN101768025 A CN 101768025A
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Abstract
Disclosed is a method for producing a sulfur fertilizer by diammonium phosphate device, comprising: (1) powdered sulfur is added into a preset molten sulfur device and heated and fused into liquid sulfur; (2) the liquid sulfur is added into an inlet of a pre-neutralizing tank pump, and enters a pre-neutralizing tank; (3) ammonia and phosphoric acid are added into the pre-neutralizing tank, and prepared into diammonium phosphate slurry through reaction; (4) sulfuric acid is added into the slurry of the pre-neutralizing tank, and reacted with ammonia to produce ammonium sulfate; (5) the prepared liquid sulfur, the diammonium phosphate slurry and the slurry containing the ammonium sulfate are fed into an inlet of a guniting pump together to form a mixed material, and part of slurry serves as returning charge; (6) the mixed material is thrown into a pelletizer by the guniting pump for guniting and palletizing so as to obtain a granular material; and (7) the granular material enters a drier and dried by hot-blast air, and then crushed and sieved to prepare the sulfur fertilizer. The method can use the existing diammonium phosphate device to prepare the fertilizer containing three crop nutrient elements of nitrogen, phosphorus and sulfur, and exploits a convenient and smooth technological line for sulfur fertilizer production. The invention is applicable to renovation of variety for phosphorus fertilizer enterprises.
Description
Technical field
The present invention relates to phosphate fertilizer, also relate to sulfur fertilizer, in particular to the method for producing sulfur fertilizer with diammonium phosphate device.
Background technology
So-called sulfur fertilizer is the fertilizer that contains the middle amount nutrient sulfur of crop needs.Traditional sulfur fertilizer production technology one is to take the mode of external parcel liquid-state sulfur to produce sulfur fertilizer at diammonium phosphate product, and another kind is the mode hydrojet attitude sulphur of taking and whitewashing synchronous in the tablets press the inside, makes it and material spray granulating together.Mix uneven disadvantage but these modes exist, sulphur might with material can't thorough mixing with contact, directly form bulk and particle, make product not reach requirement; And the mode of external parcel might be worn and torn in the process of packing and transportation, efflorescence, causes the loss of sulphur nutrient.
Prior art application Chinese patent No. 96193527.8 " sulfur-containing fertilizer and preparation method thereof ", No. 99120285.6 " compound sulfur-containing fertilizer and manufacture method thereof ", No. 01139524.9 " utilizing phosphogypsum and flyash to produce silico n calcium sulfur fertilizer and method thereof ", No. 01801260.4 " sulfur-containing fertilizer composition and preparation method thereof ", No. 200610172825.7 " sulfur-containing fertilizer composition and preparation method thereof " arranged.Have not yet to see the patented technology of producing sulfur fertilizer with diammonium phosphate device.
Summary of the invention
The object of the present invention is to provide a kind of method, thereby overcome the shortcoming that traditional sulfur fertilizer is produced, utilize diammonium phosphate existing apparatus direct production sulfur fertilizer with diammonium phosphate device production sulfur fertilizer.
The contriver is on the basis of experiment many times, and the method with diammonium phosphate device production sulfur fertilizer of invention may further comprise the steps:
(1) powdery sulphur is added the molten sulphur device heating and melting that is provided with in advance and become molten sulfur;
(2) molten sulfur is added the import of pre-neutralization groove pump, and enter the pre-neutralization groove;
(3) in the pre-neutralization reactive tank, add ammonia and phosphoric acid, make diammonium phosphate slurry by reaction;
(4) in the slip of pre-neutralization reactive tank, add sulfuric acid, produce ammonium sulfate with ammonia react;
(5) slip of molten sulfur, diammonium phosphate slurry and the sulfur acid ammonium that above-mentioned 4 steps are made is sent into the import of spray pump together, forms mixture, and the part slip is as returning charge;
(6) mixture is squeezed into the coating granulation of whitewashing in the tablets press with spray pump, obtains pellet;
(7) pellet enters at last in the drying machine and uses warm air drying, and crushing and screening makes sulfur fertilizer again.
In above-mentioned (1) step, the temperature of molten sulphur device heating sulphur is for being not less than 120 ℃.
In above-mentioned (2) step, enter the slip of pre-neutralization groove and the mass ratio of molten sulfur and be: 1: 0.06.
In above-mentioned (3) step, the logical pressure of the steam coils in the reactive tank is the following low-pressure steam heating of 1.0MPa, and slurry temperature is remained at more than 120 ℃, and molten sulfur and slip thorough mixing are even.
In above-mentioned (4) step, the sulfuric acid of adding is 98% the vitriol oil, and slip and vitriolic mass ratio are 1: 0.10308.
In above-mentioned (5) step, described returning charge accounts for 1/4 of slip total mass.
In above-mentioned (6) step, the shotcrete pipe of described spray pump is a jacket pipe, is 1.0～1.6MPa, the temperature middle pressure steam heat tracing about 210 ℃ with pressure, make in the mixture liquid-state sulfur not Yin Wendu reduce and generation is solidified.
In above-mentioned (7) step, the hot blast temperature of described drying machine≤250 ℃, the material moisture of outlet is not higher than 2.0%; The quality index of described sulfur fertilizer product is: effective P
2O
5〉=40%; Total nitrogen 〉=17%; Moisture≤2.0%; Product granularity after the screening 〉=90% (2～4mm); Sulphur content (elemental sulfur, combined sulfur)≤10%, wherein elemental sulfur≤5%, combined sulfur≤5%.
The contriver points out: add the vitriol oil and phosphoric acid in the pre-neutralization reactive tank, produce ammonium sulfate and diammonium phosphate with ammonia react; Wherein the ammonium sulfate sulfur-bearing accounts for 1/2 of institute's sulfur-bearing in the sulfur fertilizer.Reaction equation is:
H
2SO
4+NH
3＝(NH
4)
2SO
4
H
3PO
4+NH
3＝(NH
4)
2HPO
4
The contriver points out again: molten sulfur and vitriolic add-on are to calculate by the quality of sulfur fertilizer product, get sulfur fertilizer sulfur-bearing 10% usually and are benchmark.
The contriver also points out, in whole process flow, control the density and the viscosity of slip by adding washing lotion or water, thereby guarantees the good flowability of slip.
Method of producing sulfur fertilizer with diammonium phosphate device provided by the invention, can make the fertilizer that contains nitrogen, phosphorus, three kinds of crop nutrient elements of sulphur with the mode of existing diammonium phosphate device and pre-neutralization, open up an operational path that convenience is unimpeded for producing sulfur fertilizer.The kind that is applicable to phosphatic fertilizer company is upgraded.
Description of drawings
Accompanying drawing is the technical process schematic block diagram of the inventive method.
Embodiment
Two series of Wengfu Group Co., Ltd.'s diammonium phosphate device all adopt diammonium phosphate device to produce sulfur-bearing phosphate fertilizer product.Specific practice is:
At first powdery sulphur is added sulfur melting system and make molten sulfur being not less than to melt under 120 ℃; Secondly add reactions such as ammonia, phosphoric acid in reactive tank, the logical pressure of the steam coils in the reactive tank is the following low-pressure steam heating of 1.0MPa, the diammonium phosphate slurry of making; Add sulfuric acid again by producing load, the whitewashing amount is 1: 0.10308 with the sulfuric acid ratio; Be 1: 0.06 the import of blending ratio by spray pump again by slip and molten sulfur mass ratio, about 1/4 slip is as returning charge; Squeeze into the coating granulation of whitewashing in the tablets press by spray pump at last, the whitewashing amount is by producing load adjustment, and shotcrete pipe is a jacket pipe, is that the middle pressure steam of about 210 ℃ of 1.6MPa, temperature is incubated with pressing, and makes sulfur fertilizer behind the crushing and screening.
Employing has obtained success than invention, and the stability of system, security are all fine, and the product appearance quality is also good, can create the economic worth of more than one hundred million units for group company, has obtained user's favorable comment.
Claims (8)
1. method of producing sulfur fertilizer with diammonium phosphate device is characterized in that this method may further comprise the steps:
(1) powdery sulphur is added the molten sulphur device heating and melting that is provided with in advance and become molten sulfur;
(2) molten sulfur is added the import of pre-neutralization groove pump, and enter the pre-neutralization groove;
(3) in the pre-neutralization reactive tank, add ammonia and phosphoric acid, make diammonium phosphate slurry by reaction;
(4) in the slip of pre-neutralization reactive tank, add sulfuric acid, produce ammonium sulfate with ammonia react;
(5) slip of molten sulfur, diammonium phosphate slurry and the sulfur acid ammonium that above-mentioned 4 steps are made is sent into the import of spray pump together, forms mixture, and the part slip is as returning charge;
(6) mixture is squeezed into the coating granulation of whitewashing in the tablets press with spray pump, obtains pellet;
(7) pellet enters in the drying machine dryly with hot blast at last, and crushing and screening makes sulfur fertilizer again.
2. the method for claim 1 is characterized in that in (1) step, and the temperature of molten sulphur device heating sulphur is for being not less than 120 ℃.
3. the method for claim 1 is characterized in that in (2) step, entered the slip of pre-neutralization groove and the mass ratio of molten sulfur and was: 1: 0.06.
4. the method for claim 1 is characterized in that in (3) step, and the logical pressure of the steam coils in the reactive tank is the following low-pressure steam heating of 1.0MPa, and slurry temperature is remained at more than 120 ℃, and molten sulfur and slip thorough mixing are even.
5. the method for claim 1 is characterized in that the sulfuric acid of adding is 98% the vitriol oil in (4) step, and slip and vitriolic mass ratio are 1: 0.10308.
6. the method for claim 1 is characterized in that described returning charge accounts for 1/4 of slip total mass in (5) step.
7. the method for claim 1, it is characterized in that in (6) step, the shotcrete pipe of described spray pump is a jacket pipe, is 1.0～1.6MPa, the temperature middle pressure steam heat tracing about 210 ℃ with pressure, make in the mixture liquid-state sulfur not Yin Wendu reduce and produce and solidify.
8. the method for claim 1 is characterized in that in (7) step, the hot blast temperature of described drying machine≤250 ℃, and the material moisture of drying machine outlet is not higher than 2.0%; The quality index of described sulfur fertilizer product is: effective P
2O
5〉=40%; Total nitrogen 〉=17%; Moisture≤2.0%; Product granularity after the screening 〉=90% (2～4mm); Sulphur content (elemental sulfur, combined sulfur)≤10%, wherein elemental sulfur≤5%, combined sulfur≤5%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101029701A CN101768025B (en) | 2009-12-24 | 2009-12-24 | Method for producing sulfur fertilizer by diammonium phosphate device |
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|---|---|---|---|
| CN2009101029701A CN101768025B (en) | 2009-12-24 | 2009-12-24 | Method for producing sulfur fertilizer by diammonium phosphate device |
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|---|---|
| CN101768025A true CN101768025A (en) | 2010-07-07 |
| CN101768025B CN101768025B (en) | 2012-08-15 |
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| CN2009101029701A Active CN101768025B (en) | 2009-12-24 | 2009-12-24 | Method for producing sulfur fertilizer by diammonium phosphate device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973790A (en) * | 2010-10-26 | 2011-02-16 | 瓮福（集团）有限责任公司 | Method for producing granular diammonium phosphate with low concentration of nutrients by tailings |
| CN102491807A (en) * | 2011-12-09 | 2012-06-13 | 瓮福（集团）有限责任公司 | Method for producing boron-containing diammonium phosphate product |
| CN104529625A (en) * | 2014-12-15 | 2015-04-22 | 贵州大学 | Uniform addition mode of elemental sulfur in ammonium phosphate |
| CN104788161A (en) * | 2015-04-17 | 2015-07-22 | 湖北富邦科技股份有限公司 | Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur |
| CN105110887A (en) * | 2015-07-28 | 2015-12-02 | 魏占波 | Long-acting phosphate ammoniate fertilizer |
| CN106380255A (en) * | 2016-08-31 | 2017-02-08 | 瓮福达州化工有限责任公司 | Sulfur-containing diammonium phosphate production process and production device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118445C (en) * | 2000-02-01 | 2003-08-20 | 江西贵溪化肥厂 | Process for producing compound diammonium hydrogen phosphate fertilizer |
| CN100354235C (en) * | 2006-04-06 | 2007-12-12 | 潍坊昌大肥料有限公司 | Spray pelleting process of compound fertilizer |
-
2009
- 2009-12-24 CN CN2009101029701A patent/CN101768025B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973790A (en) * | 2010-10-26 | 2011-02-16 | 瓮福（集团）有限责任公司 | Method for producing granular diammonium phosphate with low concentration of nutrients by tailings |
| CN101973790B (en) * | 2010-10-26 | 2013-05-22 | 瓮福（集团）有限责任公司 | Method for producing granular diammonium phosphate with low concentration of nutrients by tailings |
| CN102491807A (en) * | 2011-12-09 | 2012-06-13 | 瓮福（集团）有限责任公司 | Method for producing boron-containing diammonium phosphate product |
| CN104529625A (en) * | 2014-12-15 | 2015-04-22 | 贵州大学 | Uniform addition mode of elemental sulfur in ammonium phosphate |
| CN104788161A (en) * | 2015-04-17 | 2015-07-22 | 湖北富邦科技股份有限公司 | Method for producing fertilizer with high ammonium phosphate sulfate by adopting sulphur |
| CN105110887A (en) * | 2015-07-28 | 2015-12-02 | 魏占波 | Long-acting phosphate ammoniate fertilizer |
| CN106380255A (en) * | 2016-08-31 | 2017-02-08 | 瓮福达州化工有限责任公司 | Sulfur-containing diammonium phosphate production process and production device |
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| Publication number | Publication date |
|---|---|
| CN101768025B (en) | 2012-08-15 |
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Owner name: WENGFU ZIJIN CHEMICAL INDUSTRY CO., LTD. Effective date: 20130912 |
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Effective date of registration: 20130912 Address after: 550002 Guizhou city of Guiyang province Nanming City Road No. 57 Wengfu International Building 23 buildings Patentee after: Wengfu (Group) Co., Ltd. Patentee after: Wengfu Zijin Chemical Industry Co., Ltd. Address before: 550002 Guizhou city of Guiyang province Nanming City Road No. 57 Wengfu International Building 23 buildings Patentee before: Wengfu (Group) Co., Ltd. |
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Address after: 550500 Guizhou Province, Qiannan Buyei and Miao Autonomous Prefecture Fuquan Racecourse town Yingbin Road No. 1 Wengfu group Co-patentee after: WENGFU ZIJIN CHEMICAL INDUSTRY Co.,Ltd. Patentee after: WENGFU GROUP Co.,Ltd. Address before: 23, 550002 floor, International Building, No. 57, South City Road, Nanming District, Guiyang, Guizhou Co-patentee before: WENGFU ZIJIN CHEMICAL INDUSTRY Co.,Ltd. Patentee before: WENGFU GROUP Co.,Ltd. |