CN108658674A - A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer - Google Patents
A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer Download PDFInfo
- Publication number
- CN108658674A CN108658674A CN201810727776.1A CN201810727776A CN108658674A CN 108658674 A CN108658674 A CN 108658674A CN 201810727776 A CN201810727776 A CN 201810727776A CN 108658674 A CN108658674 A CN 108658674A
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- China
- Prior art keywords
- parts
- filter residue
- elemental sulfur
- sulphur
- fertilizer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- 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
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- 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
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
Abstract
The invention discloses a kind of methods using discarded molten sulphur filter residue production elemental sulfur composite fertilizer.Weigh 87~255 parts of molten sulphur filter residue, P2O5Comminutor is added in 243~279 parts of a concentration of 43.15%~46.6% phosphoric acid, 43~75 parts of gas ammonia, 397~483 parts of sequences of 195~346 parts of ammonium nitrate and potassium sulfate；Control comminutor discharging moisture content 1.3%~3.5% obtains product.The present invention is pioneering effectively to promote resource utilization using the molten sulphur filter residue production sulphur compound fertilizer of waste using the elemental sulfur in filter residue as sulphur nutrient, avoids wasting, reduce environmental pollution.Be conducive to plant absorption utilization, improve the yield and quality of crop.Using the diatomite in filter residue as chemical fertilizer coating agent, product is effectively prevent to lump, promotes chemical fertilizer products quality.Production technology of the present invention is easy, of low cost, has a good application prospect.
Description
Technical field
The invention belongs to sulphur compound fertilizer production technical fields, are specifically related to a kind of utilize and discard molten sulphur filter residue production elemental sulfur
The method of composite fertilizer.
Background technology
Existing sulfur fertilizer production is required to use sulfuric acid, and one is sulfuric acid to pressurize through sulfuric acid pump, is directly added into pipe reaction
Device is blended in tubular reactor with cleaning solution and is reacted with ammonia, sprays into comminutor.Technological process includes neutralization reaction, ammonification grain
Change, is dry, sieve part, is crushed, wraps up the processes such as (dyeing), washing tail gas.Also method is taken and whitewashes in comminutor
Mode simultaneously sprays into liquid-state sulfur, is allowed to the slurry-spraying pelletizing together with material.Sulphuric acid cost height, operation is not only added in these methods
Complexity, there is also sulphur to be unable to fully mix and contact with material, easily forms blocky and drusen, product quality, which is not achieved, to be wanted
The disadvantage asked.And fertilizer caking not only seriously affects fertilizer efficiency, and storage, transport and use can also be given to bring many difficulties, thus it is existing
It generally needs to use anticaking agent when stage chemical fertilizer production.List generally utilizes modified inert dust from the point of view of complex fertilizer product
End is used as anticaking agent, and not only usage amount is larger, can be affected greatly to product quality, and dust phenomenon is tight when production operation
Weight, anti-caking ability be not lasting.
And on the other hand, for the prior art when using sulfur cream sulfuric acid, molten sulphur process will produce a large amount of filter residues, melt sulphur filter
Contain sulphur, diatomite and impurity in slag, but be not yet received efficiently use at present, manufacturing enterprise is generally by molten sulphur filter residue when calcellation
Gurry banks up processing.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to which providing a kind of utilize discards molten sulphur filter residue production elemental sulfur
The method of composite fertilizer realizes making full use of for resource, simplifies sulphur compound fertilizer production technology.
The purpose of the present invention is achieved by the following technical programs.
Unless otherwise indicated, percentage of the present invention is mass percent.
A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer, it is characterised in that：It weighs by weight each
Comminutor is added in raw material, sequence：Molten 87~255 parts of sulphur filter residue, P2O5A concentration of 43.15%~46.6% phosphoric acid 243~279
397~483 parts of part, 43~75 parts of gas ammonia, 195~346 parts of ammonium nitrate and potassium sulfate；Control comminutor discharging moisture content 1.3%
~3.5%.
The molten sulphur filter residue, wherein sulfur-bearing 42%~49%, impurity 9%~11%, diatomite 49%~56%.
Compared with prior art, beneficial effects of the present invention：
The present invention is pioneering to melt sulphur filter residue production sulphur compound fertilizer using waste, using the elemental sulfur in filter residue as sulphur nutrition member
Element, and using the diatomite in filter residue as chemical fertilizer coating agent, resource utilization is effectively promoted, it avoids wasting, it is dirty to reduce environment
Dye.Diatomite can effectively prevent the caking of gained sulphur compound fertilizer product, promote chemical fertilizer products quality.Sulphur is completely melt to become liquid
State, as carrier, molten sulfur is uniformly distributed wherein diatomite, is conducive to plant absorption utilization, is improved the yield and quality of crop.It is raw
Production. art is easy, of low cost, has a good application prospect.
Specific implementation mode
Below by embodiment, the present invention is described in further detail, but embodiment is not to the technology of the present invention side
The restriction of case, it is all based on present invention teach that made variation or equivalent replacement is within the scope of protection of the invention.
Embodiment 1
It takes acid production with sulphur to melt and melts sulphur filter residue obtained by sulphur device, after testing wherein sulfur-bearing 42%, impurity 9%, diatomite 49%.
Weigh 87 parts of molten sulphur filter residue, P by weight respectively2O5243 parts of the phosphoric acid of concentration 43.15%~46.6%, 43 parts of gas ammonia, nitric acid
Each raw material sequence is added in comminutor for 397 parts of 195 parts of ammonium and potassium sulfate.Comminutor is opened, and it is aqueous to control comminutor discharging
Rate 1.3% is to get to required elemental sulfur composite fertilizer A.
1, concrete technology index：
It is granulated outlet material N/P, >=1.6.
Enter tubular reactor cleaning solution proportion, 1.46~1.56, N/P：≤0.73.
Tubular reactor temperature, 115~155 DEG C.
Dry exhaust temperature, 85~95 DEG C.
Returning charge amount, 65~75t/h.
2, product quality indicator：
Total nutrient (N+P2O5+K2O), >=45%.
Nitrogen content (N), 12%, minus deviation absolute value≤1.0%.
Available phosphorus (P2O5), 12%, minus deviation absolute value≤1.0%.
K2O content, 21%, minus deviation absolute value≤1.0%.
Granularity (2.00~4.00mm), >=87%.
Moisture (H2O) ,≤2.5%.
Product colour, it is faint yellow, there is sense.
Embodiment 2
Embodiment 1 is repeated, there is following difference：
Weigh 96 parts of molten sulphur filter residue, P by weight respectively2O5257 parts of the phosphoric acid of concentration 43.15%~46.6%, gas ammonia 47
Part, 217 parts of ammonium nitrate, in 416 parts of addition comminutors of potassium sulfate.And comminutor discharging moisture content 1.6% is controlled to get to required
Elemental sulfur composite fertilizer B.
Embodiment 3
Embodiment 1 is repeated, there is following difference：
Weigh 125 parts of molten sulphur filter residue, P by weight respectively2O5263 parts of the phosphoric acid of concentration 43.15%~46.6%, gas ammonia
52 parts, 225 parts of ammonium nitrate, in 420 parts of addition comminutors of potassium sulfate.And comminutor discharging moisture content 1.9% is controlled to get to institute
The elemental sulfur composite fertilizer C needed.
Embodiment 4
Embodiment 1 is repeated, there is following difference：
Weigh 178 parts of molten sulphur filter residue, P by weight respectively2O5269 parts of the phosphoric acid of concentration 43.15%~46.6%, gas ammonia
58 parts, 295 parts of ammonium nitrate, in 447 parts of addition comminutors of potassium sulfate.And comminutor discharging moisture content 2.5% is controlled to get to institute
The elemental sulfur composite fertilizer D needed.
Embodiment 5
Embodiment 1 is repeated, there is following difference：
Weigh 227 parts of molten sulphur filter residue, P by weight respectively2O5273 parts of the phosphoric acid of concentration 43.15%~46.6%, gas ammonia
68 parts, 327 parts of ammonium nitrate, in 463 parts of addition comminutors of potassium sulfate.And comminutor discharging moisture content 3.3% is controlled to get to institute
The elemental sulfur composite fertilizer E needed.
Embodiment 6
Embodiment 1 is repeated, there is following difference：
Weigh 255 parts of molten sulphur filter residue, P by weight respectively2O5279 parts of the phosphoric acid of concentration 43.15%~46.6%, gas ammonia
75 parts, 346 parts of ammonium nitrate, in 483 parts of addition comminutors of potassium sulfate.And comminutor discharging moisture content 3.5% is controlled to get to institute
The elemental sulfur composite fertilizer F needed.
Application Example 1
Elemental sulfur composite fertilizer obtained by Examples 1 to 6 is detected, with commercially available nutrient specification N nutrients 12%, P2O5It supports
Divide 12%, K2O nutrients 21%, the sulfenyl phosphorus compound fertilizer of total nutrient >=45% as a contrast, the results are shown in Table 1.
1 product testing result of table
According to 1 result of table it is found that the elemental sulfur composite fertilizer of the present invention, fertilizer can be significantly improved compared with common sulfenyl phosphorus compound fertilizer
Item matter, the utilization rate for improving fertilizer.Resource utilization is effectively promoted, avoids wasting, reduce environmental pollution.Common sulfenyl phosphorus is multiple
Fertilizer needs that anticaking agent is added, but effect is not fine, also increases production cost to prevent product from luming.The present invention is then sharp
The caking that existing diatomite ingredient in sulphur filter residue just can effectively prevent products obtained therefrom is melted with waste, promotes chemical fertilizer products matter
Amount reduces production cost.Products obtained therefrom is safe and reliable, easy to use, nutrient content is high, has both remained the original base of nitrogen, phosphorus and potassium fertilizer
This characteristic, and have the elemental sulfur nutrient needed for plant growth, yield obviously increases.
Application Example 2
In Qujing City of Yunnan Province Xuanwei City slab bridge street, it is real to carry out maize culture comparison for application elemental sulfur composite fertilizer of the present invention
It tests.
Experiment condition：10 mu of corn model fields, corn seeding cultivation；Experimental group -- elemental sulfur composite fertilizer 117Kg/ of the present invention
Per acre, control group -- sulfenyl phosphorus compound fertilizer 117Kg/ is per acre.
Survey production the result shows that, using elemental sulfur composite fertilizer of the present invention, corn per mu yield is specifically shown in than control volume increase 16.45%
Table 2.
The effect of increasing production of 2 elemental sulfur composite fertilizer of table fertilising
According to 2 result of table it is found that experimental group increases production 242.2Kg, obvious effect of increasing production per acre than control group corn.Test table
Bright, elemental sulfur composite fertilizer of the invention is notable to the function and effect of corn, can promote root system and leaf growth, the middle and later periods is made to give birth to
Long development progress faster, increases the yield per unit area.
Further experiment shows that elemental sulfur composite fertilizer of the invention applies vega, not only increases production, but also Flue-cured tobacco Quality is big
It is big to improve；After the applications such as early rice, rape, herbage, legume, yield also obviously increases.The crops such as peanut, soybean, sweet potato are applied
With rear increase yield significantly, generally 12% or more.
Application Example 3
Technique and Cost comparisons：
1, existing acid production with sulphur melts sulphur device, and whole year generates 503 tons of sulphur slags, and sulphur slag muck per ton sets 204 yuan of administration fee, every year
It needs to bank up 503 tons × 204 yuan=102612 yuan of administration fee.
1 ton of NPK (12-12-21) product is produced, needs 0.121 ton of phosphoric acid, 0.121 ton × 2565 yuan=310.3 (member/
T), 0.052 ton of synthesis ammonia, 0.052 ton × 3071 yuan=159.6 (members/t), 0.442 ton of potassium sulfate, 0.442 ton × 2706 yuan=
1196 (members/t), 0.132 ton of ammonium nitrate, 0.132 ton × 2256 yuan=297.7 (members/t), 0.135 ton of sulphur, 0.135 ton ×
1267 yuan=171 (members/t), 0.00207 ton of anticaking agent, 0.00207 × 11180=23.1 is first, in total 310.3+159.6+
(1196+297.7+171+23.1=2157.7 member/t).Time is 2.5 hours.The cost for producing 10t phosphorus compound fertilizers is 2157.7 yuan
× 10=21577 members, time are 25 hours.
2, present invention process produces 1 ton of elemental sulfur composite fertilizer, needs 0.121 ton of phosphoric acid, 0.121 ton × 2565 yuan=
310.3 (members/t), 0.052 ton of synthesis ammonia, 0.052 ton × 3071 yuan=159.6 (members/t), 0.442 ton of potassium sulfate, 0.442 ton
× 2706 yuan=1196 (members/t), 0.132 ton of ammonium nitrate, 0.132 ton × 2256 yuan=297.7 (members/t), in total 310.3+
(159.6+1196+297.7=1963.6 member/t).Time is 0.8 hour.Produce 10t phosphorus compound fertilizers cost be 1963.6 yuan ×
10=19636 members, time are 8 hours.
Claims (1)
1. a kind of method using discarded molten sulphur filter residue production elemental sulfur composite fertilizer, it is characterised in that：Each original is weighed by weight
Comminutor is added in material, sequence：Molten 87~255 parts of sulphur filter residue, P2O5243~279 parts of a concentration of 43.15%~46.6% phosphoric acid,
397~483 parts of 43~75 parts of gas ammonia, 195~346 parts of ammonium nitrate and potassium sulfate；Control comminutor discharging moisture content 1.3%~
3.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727776.1A CN108658674A (en) | 2018-07-05 | 2018-07-05 | A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810727776.1A CN108658674A (en) | 2018-07-05 | 2018-07-05 | A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108658674A true CN108658674A (en) | 2018-10-16 |
Family
ID=63773759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810727776.1A Pending CN108658674A (en) | 2018-07-05 | 2018-07-05 | A method of utilizing discarded molten sulphur filter residue production elemental sulfur composite fertilizer |
Country Status (1)
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| CN (1) | CN108658674A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0719748A2 (en) * | 1994-12-26 | 1996-07-03 | Rotem Amfert Negev Ltd. | Process for the manufacturing of sulfur-containing fertilizers |
| CN202912693U (en) * | 2012-11-09 | 2013-05-01 | 襄阳泽东化工集团有限公司 | Utilization system for tailings in sulfuric acid preparation |
| CN104355734A (en) * | 2014-10-24 | 2015-02-18 | 瓮福（集团）有限责任公司 | Production method of ammonium sulfate-ammonium phosphate composite fertilizer |
-
2018
- 2018-07-05 CN CN201810727776.1A patent/CN108658674A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0719748A2 (en) * | 1994-12-26 | 1996-07-03 | Rotem Amfert Negev Ltd. | Process for the manufacturing of sulfur-containing fertilizers |
| CN202912693U (en) * | 2012-11-09 | 2013-05-01 | 襄阳泽东化工集团有限公司 | Utilization system for tailings in sulfuric acid preparation |
| CN104355734A (en) * | 2014-10-24 | 2015-02-18 | 瓮福（集团）有限责任公司 | Production method of ammonium sulfate-ammonium phosphate composite fertilizer |
Non-Patent Citations (1)
| Title |
|---|
| 河南省农业厅教材编辑委员会编: "《土壤肥料学》", 30 September 1960 * |
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Application publication date: 20181016 |