CN207391303U - A kind of production system of urea nitrophosphate fertilizer product - Google Patents
A kind of production system of urea nitrophosphate fertilizer product Download PDFInfo
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- CN207391303U CN207391303U CN201721343812.1U CN201721343812U CN207391303U CN 207391303 U CN207391303 U CN 207391303U CN 201721343812 U CN201721343812 U CN 201721343812U CN 207391303 U CN207391303 U CN 207391303U
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- particle
- urea
- discharge port
- machine
- nitrophosphate fertilizer
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Abstract
A kind of production system of urea nitrophosphate fertilizer product, including the acidolysis slot being sequentially connected, acid non-soluble substance piece-rate system, addition and vapo(u)rization system, slurry-spraying pelletizing machine, particle conveyer, particle lifting machine and screening machine, acidolysis slot is provided with dust technology and ground phosphate rock entrance, the particle of the slurry-spraying pelletizing machine production sends the first bucket elevator to through the particle conveyer and sends the screening machine to, the screening machine is equipped with bulky grain discharge port, finished particle discharge port and little particle discharge port, the particle lifting machine includes the first bucket elevator and the second bucket elevator, the bulky grain discharge port is connected the returning charge entrance of slurry-spraying pelletizing machine together after crusher with little particle discharge port, finished particle discharge port is sequentially connected the second bucket elevator and storehouse formula cooler.It is not high to phosphorus ore grade requirement；The by-products such as no ardealite generate；The granularity of phosphorus ore is larger, reduces Raw Ore processing charges；Acid non-soluble substance granularity is big, convenient for removing, helps raising product quality.
Description
Technical field
The utility model belongs to urea-nitrophosphate fertilizer preparing technical field, is produced more particularly, to a kind of urea nitrophosphate fertilizer
The production system of product.
Background technology
Urea is physiological neutral fertilizer, does not remain any harmful substance in the soil, and chronic administration does not have harmful effect.But
The shortcomings that urea, is that nitrogen loss is larger.If a small amount of biuret can be generated by spending height in granulation medium temperature simultaneously, also known as biuret,
There is inhibitory action to crop.China's regulation fertilizer should be less than 0.5% with urea Biuret Content.When Biuret Content is more than 1%,
Seed manure, seed manure and foliar fertilizer cannot be done, other urea contents for applying the phase also excessively or should not be concentrated excessively.Urea is organic
Nitrogenous fertilizer by the urase effect in soil, after being hydrolyzed into ammonium carbonate or ammonium hydrogen carbonate, can just be absorbed by crops utilization.
Nitrophosphate fertilizer is equally one of important kind of composite fertilizer, it is by nitrogen made from phosphate ore processing with decomposition of nitric acid
Phosphorus two-nutrient compound fertilizer, key component are ammonium nitrate, calcium nitrate, monoammonium phosphate, Diammonium phosphate (DAP) and Dicalcium Phosphate.Nitrophosphate fertilizer produces
The advantage of product in itself determines that its scope of application is very wide, and high nitrogen (N) and high phosphorus (P are not only contained in the product2O5) while from phosphorus ore
In bring more than ten kinds of calcium, magnesium, sulphur, silicon and the copper useful to crops, iron, manganese, zinc, boron, molybdenum, cobalt, selenium, sodium, nickel etc. more than ten
Trace element is all the element useful to crops in kind.And the nitro-compound fertilizer of other kinds (such as：Based on ammonium nitrate solution
The nitro-compound fertilizer of production) main nutrient elements or nitrogen, phosphorus and potassium are all outer additions, and moderate-element and trace element are seldom
Even without.
But in the production technology of nitrophosphate fertilizer, if using sulfuric acid and the phosphate rock decomposition of nitric acid, it can generate big
The ardealite of amount, brings environmental pollution.Deliming is needed using decomposing phosphorite by using nitric acid, process is more, and investment is larger.Nitric acid phosphorus simultaneously
In fertilizer production, since neutralization step is higher for part ion content requirement, so required phosphorus ore grade is also higher.Except right
P2O5Beyond content has higher requirements (general requirement >=27%), to MgO, Al2O3, Fe2O3Content also have compared with strict requirements.
The existing phosphorus ore majority of China belongs to low-grade phosphate ore, can not normally produce nitrophosphate fertilizer.
Therefore, it is necessary to it will be improved for urea and the technique of nitrophosphate fertilizer product and nitrophosphate fertilizer.And add in urine
The acid hydrolysis solution of element and decomposing phosphorite by using nitric acid is reacted, and forms a kind of new product, i.e. urea-nitrophosphate fertilizer, is to production
Technique and product are carried out at the same time the selection of optimization.
Utility model content
To improve existing Phosphate Fertilizer Production technique and properties of product, the utility model proposes a kind of urea-nitric acid phosphorus
Fertile production system.
The purpose of this utility model is to provide a kind of new urea-nitrophosphate fertilizer product, existing phosphoric acid phosphate fertilizer for market
Process of producing product is more numerous and diverse, water-soluble P2O5Content is relatively low.This product be one kind by energy-saving and environment-friendly technique and the property produced
It can more preferably, more adapt to the product in market.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of production system of urea nitrophosphate fertilizer product, including be sequentially connected acidolysis slot, acid non-soluble substance piece-rate system,
Addition and vapo(u)rization system, slurry-spraying pelletizing machine, particle conveyer, particle lifting machine and screening machine, acidolysis slot be provided with dust technology and
Ground phosphate rock entrance, the particle of slurry-spraying pelletizing machine production through the particle conveyer send to the first bucket elevator send to it is described
Screening machine, the screening machine are equipped with bulky grain discharge port, finished particle discharge port and little particle discharge port, the particle lifting machine
Including the first bucket elevator and the second bucket elevator, the bulky grain discharge port is connected spray together after crusher with little particle discharge port
The returning charge entrance of comminutor is starched, finished particle discharge port is sequentially connected the second bucket elevator and storehouse formula cooler.
Acidolysis slot, which is also set up, adds in phosphoric acid to adjust the device of N/P ratio and pipeline.
The acid non-soluble substance piece-rate system being connected with the outlet of acidolysis slot, including subsider, washing drum, horizontal screw centrifugal
Machine；Acid hydrolysis solution first passes through inclined plate sedimentation formula subsider and is separated, and the concentrated phase of subsider lower part is separated using washing drum, on
The clear liquid in portion separates again via horizontal spiral centrifuge.
The subsider is settled using large area and combines wide anchor agitator, and washing drum is fed by low spot, utilizes potential difference
Large granular impurity is removed, trans spiral is set in horizontal spiral centrifuge.
The addition and vapo(u)rization system include evaporator feeder trough and evaporator, the washing drum and the horizontal spiral from
Clear liquid and urea after scheming separation add in the evaporator feeder trough and carry out addition, and the product after addition is after evaporator evaporates
It is sent into slurry-spraying pelletizing machine.
The slurry-spraying pelletizing machine is divided into two sections, and for front half section to be granulated section, the second half section is dryer section.
The screening machine is double-deck screen shale shaker or rotary screen.
The storehouse formula cooler vertical, is internally provided with 3 groups of plate heat exchangers, and finished particle passes sequentially through from top to bottom
3 groups of plate heat exchangers, recirculated cooling water pass sequentially through 3 groups of plate heat exchangers and cool down with finished particle indirect heat exchange from bottom to top.
Compared with the prior art, a kind of production system of urea nitrophosphate fertilizer product described in the utility model has following
Advantage：
Due to the adoption of the above technical scheme：
1. the production system of the utility model urea-nitrophosphate fertilizer product is low for phosphorus ore grade requirement, without ardealite
By-products is waited to generate, while deliming is not required, production process environmental protection and energy saving.The fineness ratio Phosphate Fertilizer Nitrate with Frozen Method of production phosphorus ore
Phosphorus ore granularity is much larger, reduces the processing charges of Raw Ore.Acid non-soluble substance granularity is big, convenient for removing, helps to improve
Product quality.By being concentrated by evaporation, solution concentration reaches more than 90% (wt), send to granulating and drying urea-nitrophosphate fertilizer solution
Machine is granulated and is dried, and then by screening, cooling, obtains qualified urea-nitrophosphate fertilizer product.Product combines urea
The advantages of with two kinds of fertilizer of nitrophosphate fertilizer, and nutrient composition is easy to adjust.Water-soluble phosphorus accounts for available phosphorus percentage and reaches as high as
95%, significantly larger than 70% (high-class product) of nitrophosphate fertilizer.Nitrogen loss is 13% when product is applied, far below the nitrogen loss of urea
31%.It is good product performance, easy to use, it production link and can realize automatic and mechanical using link, there is good economy
Value.
N/P ratio is adjusted 2. the device and pipeline of addition phosphoric acid facilitate into phosphoric acid.
3. acid non-soluble substance piece-rate system, including subsider, washing drum, horizontal spiral centrifuge, above-mentioned several equipment is mutually tied
It closes, can finally make acid non-soluble substance removing more thorough.
4. subsider is settled using large area and combines wide anchor agitator, washing drum is fed by low spot, is taken off using potential difference
Except large granular impurity, trans spiral in horizontal spiral centrifuge is set, further improves the effect of acid non-soluble substance removing.
Description of the drawings
The attached drawing for forming the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The schematic description and description of type does not form the improper restriction to the utility model for explaining the utility model.
Fig. 1, Fig. 2 are the process flow charts of the utility model.
In figure, 1- acidolysis slots；2- washing drums；3- subsiders；4- horizontal spiral centrifuges；5- evaporator feeder troughs；6- steams
Send out device；7- slurry-spraying pelletizing machines；8- belt conveyors；The first bucket elevators of 9-；10- screening machines；11- crushers；The buckets of 12- second carry
Machine；13- storehouses formula cooler.
Specific embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For the limitation to the utility model.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction
Or imply relative importance or the implicit quantity for indicating indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can express or implicitly include one or more this feature.In the description of the utility model, unless separately
It is described, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State concrete meaning of the term in the utility model.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figs. 1-2, a kind of production system of urea nitrophosphate fertilizer product, including be sequentially connected acidolysis slot, acid not
Molten object piece-rate system, addition and vapo(u)rization system, slurry-spraying pelletizing machine, particle conveyer, particle lifting machine and screening machine, acidolysis slot are set
Dust technology and ground phosphate rock entrance are equipped with, the particle of the slurry-spraying pelletizing machine production sends the first bucket to through the particle conveyer and carries
Machine sends the screening machine to, and the screening machine is equipped with bulky grain discharge port, finished particle discharge port and little particle discharge port, institute
Stating particle lifting machine includes the first bucket elevator and the second bucket elevator, and the bulky grain discharge port discharges after crusher with little particle
Mouth connects the returning charge entrance of slurry-spraying pelletizing machine together, and finished particle discharge port is sequentially connected the second bucket elevator and storehouse formula cooler.
Preferably, acidolysis slot, which is also set up, adds in phosphoric acid to adjust the device of N/P ratio and pipeline.
Preferably, the acid non-soluble substance piece-rate system being connected with the outlet of acidolysis slot, including subsider, washing drum, horizontal spiral shell
Whiz scheming：Acid hydrolysis solution first passes through inclined plate sedimentation formula subsider and is separated, and the concentrated phase of subsider lower part is carried out using washing drum
Separation, the clear liquid on top separate again via horizontal spiral centrifuge.
Preferably, the subsider is settled using large area and combines wide anchor agitator, and washing drum is fed by low spot, profit
Large granular impurity is removed with potential difference, trans spiral is set in horizontal spiral centrifuge.
Preferably, the addition and vapo(u)rization system include evaporator feeder trough and evaporator, and the washing drum crouches with described
Clear liquid and urea after the separation of formula screw centrifuge add in the evaporator feeder trough and carry out addition, and the product after addition is through evaporation
Slurry-spraying pelletizing machine is sent into after device evaporation.
Preferably, the slurry-spraying pelletizing machine is divided into two sections, and for front half section to be granulated section, the second half section is dryer section.Granulating and drying
One saves space.
Preferably, the screening machine is double-deck screen shale shaker or rotary screen.Screening effect is good.
Preferably, the storehouse formula cooler vertical, is internally provided with 3 groups of plate heat exchangers, finished particle is from top to bottom
3 groups of plate heat exchangers are passed sequentially through, recirculated cooling water passes sequentially through 3 groups of plate heat exchangers and changed indirectly with finished particle from bottom to top
Heat drop temperature.Good effect of heat exchange, it is efficient.
The production method of the urea nitrophosphate fertilizer product, includes the following steps：
1st, nitric acid and phosphorus ore acid hydrolysis reaction step：The dust technology and ground phosphate rock of concentration 60%~68% (preferably 65%) (wt)
(P2O5Content is 20%~30%) it is reacted in two-stage acidolysis slot, obtain the acid containing acid non-soluble substance of concentration about 75% (wt)
Liquid is solved, and the device for adding in phosphoric acid and pipeline are set to adjust rational N/P ratio as 2: 1 or 1: 1；
2nd, acid non-soluble substance step is separated：First add flocculant in acid non-soluble substance in acid hydrolysis solution, the acid in acid hydrolysis solution is not
Molten object first passes through subsider separation, and the concentrated phase of subsider lower part is separated using washing drum, and the clear liquid on top is again via horizontal
Screw centrifuge separates, and two kinds of different processing methods separate acid non-soluble substance with reference to three kinds of equipment.
3rd, add urea and carry out addition reaction step：The acidolysis later with separating acid non-soluble substance of urea granules or liquid is clear
Liquid mixing carries out addition reaction, generates urea-nitrophosphate fertilizer solution, concentration 83-87% (preferably 85%) (wt)；
4th, urea-nitrophosphate fertilizer slurry concentration step：Using evaporator, pulp density is concentrated into about using middle pressure steam
88-92% (preferably 90%) (wt)；
5th, urea-nitrophosphate fertilizer granulation step：Using slurry-spraying pelletizing machine, comminutor is divided into two sections, and front half section is granulation section,
Second half section is dryer section, will be granulated to be incorporated in an equipment with dry process and complete.
6th, particle screening step：Particle screening step is to screen out underproof little particle with double-deck screen shale shaker or rotary screen
And bulky grain, after bulky grain crushes and little particle is together as granulation returning charge；The finished particle of granularity qualification is sent to following process
Step.
7th, finished particle cooling step：Finished particle cooling step uses bin type cooler, and vertical is internally provided with
3 groups of plate heat exchangers, finished particle pass sequentially through 3 groups of plate heat exchangers from top to bottom, and recirculated cooling water leads to successively from bottom to top
3 groups of plate heat exchangers, finished particle and recirculated cooling water indirect heat exchange are crossed, finished particle temperature is down to less than 45 DEG C, with profit
In packaging and storage.Preferably, to reduce the generation of gas in reaction process, security, the decomposing phosphorite by using nitric acid step are improved
It needs first to cool down nitric acid before rapid, is cooled to temperature as 65-70 degree.
The utility model can be used for creating urea-Phosphate Fertilizer Production device, it can also be used to build up nitrophosphate fertilizer life
The technology upgrading transformation of device is produced, improves its economic benefit.
The production of urea-nitrophosphate fertilizer is low for phosphorus ore grade requirement, generates without by-products such as ardealites, is not required to simultaneously
Want deliming, production process environmental protection and energy saving.Production is much larger with the phosphorus ore granularity of the fineness ratio Phosphate Fertilizer Nitrate with Frozen Method of phosphorus ore, drop
The low processing charges of Raw Ore.Acid non-soluble substance granularity is big, convenient for removing, helps to improve product quality.Urea-nitrophosphate fertilizer
Solution is by being concentrated by evaporation, and solution concentration reaches more than 90% (wt), send to granulating and drying machine and be granulated and dried, Ran Houjing
Screening, cooling are crossed, obtains qualified urea-nitrophosphate fertilizer product.Product combines the excellent of two kinds of fertilizer of urea and nitrophosphate fertilizer
Point, and nutrient composition is easy to adjust.Water-soluble phosphorus accounts for available phosphorus percentage and reaches as high as 95%, is significantly larger than nitrophosphate fertilizer
70% (high-class product).Nitrogen loss is 13% when product is applied, far below the nitrogen loss 31% of urea.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modifications, equivalent replacements and improvements are made should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of production system of urea nitrophosphate fertilizer product, it is characterised in that：Including acidolysis slot, the acid non-soluble substance being sequentially connected
Piece-rate system, addition and vapo(u)rization system, slurry-spraying pelletizing machine, particle conveyer, particle lifting machine and screening machine, acidolysis slot are provided with
Dust technology and ground phosphate rock entrance, the particle of the slurry-spraying pelletizing machine production send the first bucket elevator to through the particle conveyer and pass
Give the screening machine, the screening machine is equipped with bulky grain discharge port, finished particle discharge port and little particle discharge port, described
Grain elevator include the first bucket elevator and the second bucket elevator, the bulky grain discharge port after crusher with little particle discharge port one
And the returning charge entrance of slurry-spraying pelletizing machine is connected, finished particle discharge port is sequentially connected the second bucket elevator and storehouse formula cooler.
2. a kind of production system of urea nitrophosphate fertilizer product according to claim 1, it is characterised in that：Acidolysis slot is also set
It puts and adds in phosphoric acid to adjust the device of N/P ratio and pipeline.
3. a kind of production system of urea nitrophosphate fertilizer product according to claim 1, it is characterised in that：Go out with acidolysis slot
The acid non-soluble substance piece-rate system that mouth is connected, including subsider, washing drum, horizontal spiral centrifuge；Acid hydrolysis solution first passes through inclined plate
Decanter type subsider is separated, and the concentrated phase of subsider lower part is separated using washing drum, and the clear liquid on top is again via horizontal
Screw centrifuge separates.
4. a kind of production system of urea nitrophosphate fertilizer product according to claim 3, it is characterised in that：The subsider
It is settled using large area and combines wide anchor agitator, washing drum is fed by low spot, and large granular impurity is removed using potential difference, horizontal
Trans spiral is set in screw centrifuge.
5. a kind of production system of urea nitrophosphate fertilizer product according to claim 3, it is characterised in that：The addition and
Vapo(u)rization system include evaporator feeder trough and evaporator, it is described washing drum separated with the horizontal spiral centrifuge after clear liquid and
Urea adds in the evaporator feeder trough and carries out addition, and the product after addition is sent into slurry-spraying pelletizing machine after evaporator evaporates.
6. a kind of production system of urea nitrophosphate fertilizer product according to claim 1, it is characterised in that：The whitewashing is made
Grain machine is divided into two sections, and for front half section to be granulated section, the second half section is dryer section.
7. a kind of production system of urea nitrophosphate fertilizer product according to claim 1, it is characterised in that：The screening machine
For double-deck screen shale shaker or rotary screen.
8. a kind of production system of urea nitrophosphate fertilizer product according to claim 1, it is characterised in that：The storehouse formula is cold
But device vertical is internally provided with 3 groups of plate heat exchangers, and finished particle passes sequentially through 3 groups of plate heat exchangers from top to bottom, Xun Huan
Cooling water passes sequentially through 3 groups of plate heat exchangers and cools down with finished particle indirect heat exchange from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343812.1U CN207391303U (en) | 2017-10-18 | 2017-10-18 | A kind of production system of urea nitrophosphate fertilizer product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343812.1U CN207391303U (en) | 2017-10-18 | 2017-10-18 | A kind of production system of urea nitrophosphate fertilizer product |
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| Publication Number | Publication Date |
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| CN207391303U true CN207391303U (en) | 2018-05-22 |
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ID=62328701
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| CN201721343812.1U Expired - Fee Related CN207391303U (en) | 2017-10-18 | 2017-10-18 | A kind of production system of urea nitrophosphate fertilizer product |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862354A (en) * | 2018-09-29 | 2018-11-23 | 天津华景化工新技术开发有限公司 | A kind of four water-calcium nitrate fertilizer production system and production technology |
| CN108863446A (en) * | 2018-09-29 | 2018-11-23 | 天津华景化工新技术开发有限公司 | A kind of production technology and its production system of bulky grain nitre sulphur ammonium |
| CN113603554A (en) * | 2021-07-30 | 2021-11-05 | 太原柏悟化工科技有限公司 | Production method of urea nitrophosphate fertilizer |
-
2017
- 2017-10-18 CN CN201721343812.1U patent/CN207391303U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862354A (en) * | 2018-09-29 | 2018-11-23 | 天津华景化工新技术开发有限公司 | A kind of four water-calcium nitrate fertilizer production system and production technology |
| CN108863446A (en) * | 2018-09-29 | 2018-11-23 | 天津华景化工新技术开发有限公司 | A kind of production technology and its production system of bulky grain nitre sulphur ammonium |
| CN113603554A (en) * | 2021-07-30 | 2021-11-05 | 太原柏悟化工科技有限公司 | Production method of urea nitrophosphate fertilizer |
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Granted publication date: 20180522 Termination date: 20201018 |