CN203373282U - Device for preparing ammonium phosphate fertilizer through phosphoric acid sediments - Google Patents
Device for preparing ammonium phosphate fertilizer through phosphoric acid sediments Download PDFInfo
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- CN203373282U CN203373282U CN201320453662.5U CN201320453662U CN203373282U CN 203373282 U CN203373282 U CN 203373282U CN 201320453662 U CN201320453662 U CN 201320453662U CN 203373282 U CN203373282 U CN 203373282U
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- phosphoric acid
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- gaseous ammonia
- mixing tank
- neutralizing well
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Abstract
The utility model discloses a device for preparing an ammonium phosphate fertilizer through phosphoric acid sediments. The device comprises a mixing tank (2) used for mixing the phosphoric acid sediments with a washing acid, a pump body I (4) used for communicating a washing acid storage tank with the mixing tank (2), a neutralizing tank (3) used for carrying out a neutralization reaction with gaseous ammonia, and a pump body II (8) used for communicating a gaseous ammonia storage tank with the neutralizing tank (3), wherein a neutralization reaction is carried out on an intermediate mixture I with a phosphoric acid content of 20-25% by virtue of gaseous ammonia, and no ammonium hydrogen carbonate or liquid ammonia is used for increasing the contact reaction area and speed of gaseous ammonia and the intermediate mixture I, thereby simplifying the filter pressing and washing procedures of the phosphoric acid sediments and improving the quality of the ammonium phosphate fertilizer.
Description
One, technical field
The utility model relates to a kind of device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer, especially a kind of device of the phosphoric acid sediment preparing phosphoric acid ammonium fertilizer produced while utilizing wet-method phosphoric acid.
Two, background technology
Phosphoric acid by wet process is than thermal phosphoric acid, have energy consumption low, pollute the advantages such as little, will progressively replace thermal phosphoric acid.And in Wet-process Phosphoric Acid Production, owing to containing iron in phosphorus ore, magnesium, the impurity such as aluminium can produce a large amount of phosphoric acid sediments with phosphoric acid generation complexing, these phosphoric acid sediments are mainly calcium phosphate precipitation or crystal, therefore utilizing the device of phosphoric acid sediment preparing phosphoric acid ammonium fertilizer is a kind of important chemical industry method and chemical plant installations, in the existing device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer, in the patent No., be that ZL97107676.6 discloses a kind of method of utilizing the wet phosphate waste residue to produce ammophos, it is to utilize interpolation bicarbonate of ammonia or liquefied ammonia to carry out the acid in the neutralising phosphoric acid slag, after slag after neutralization is spray-dried, can be directly as the material fertilizer in commercial fertilizer or composite fertilizer, but the defect of this patent is to need equipment to be processed as spray-dryer to the phosphoric acid sediment, cyclonic separator, fly-ash separator etc., the total nutrient of fertilizer is too low simultaneously, be generally total nutrient less than 50%.
Three, summary of the invention
In order to overcome above-mentioned technical disadvantages, the purpose of this utility model is to provide a kind of device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer, has therefore simplified the operation to the press filtration washing of phosphoric acid sediment, has improved the quality of ammophos.
For achieving the above object, the technical scheme that the utility model is taked is: include the mixing tank mixed for phosphoric acid sediment and washing acid, the pump housing I be communicated with mixing tank for the washing acid hold-up vessel, for gaseous ammonia, carrying out the neutralizing well of neutralization reaction, the pump housing II be communicated with neutralizing well for the gaseous ammonia hold-up vessel.
P
2o
5the dilute phosphoric acid that the phosphoric acid sediment that content is 30-35% and concentration are 18-20% is mixed to get the intermediate blend I that phosphorus acid content is 20-25%, the intermediate blend I is equaled to the gaseous ammonia that 1.3-1.35 and concentration are 99% according to the mole number of mole number/P of N and carry out neutralization reaction, by sulfuric acid, with unreacted gaseous ammonia, reacted, the mole number of mole number/P of its N is equaled to 1.4-1.45, obtain the intermediate blend II, to middle mixture II concentrated, granulation and screening process.Owing to having designed, use the intermediate blend I that gaseous ammonia is 21-25% to phosphorus acid content to carry out neutralization reaction, do not re-use bicarbonate of ammonia or liquid ammonia, increased the contact reacts Area and Speed of gaseous ammonia and intermediate blend I, therefore simplify the operation to the press filtration washing of phosphoric acid sediment, improved the quality of ammophos.
The utility model has designed; also include transfer tank, upgrading tower, spray granulating machine and sieve shaker; transfer tank is set to be communicated with phosphoric acid liquid finished product storage tanks; transfer tank is set to be communicated with mixing tank by chute; mixing tank is set to be communicated with the washing acid hold-up vessel by pump housing II; mixing tank is set to be communicated with neutralizing well; neutralizing well is set to be communicated with the gaseous ammonia hold-up vessel by pump housing I; neutralizing well is set to be communicated with upgrading tower; the exit end of upgrading tower is set to be communicated with the spray granulating machine, and the exit end of spray granulating machine is set to be communicated with sieve shaker.
The utility model has designed, and in mixing tank and neutralizing well, is provided with agitating vane, and neutralizing well is set to sealed.
In the technical program, the intermediate blend I that phosphorus acid content is 20-25% is technical characteristics, not only fast with gaseous ammonia neutralization reaction speed, and the temperature of reaction and the pressure condition that need are low, and the ammophos quality obtained is good.
Four, accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Five, embodiment
Fig. 1 is an embodiment of the present utility model, illustrate by reference to the accompanying drawings the present embodiment, utilize the device of phosphoric acid sediment preparing phosphoric acid ammonium fertilizer, include transfer tank 1, mixing tank 2, neutralizing well 3, pump housing I 4, upgrading tower 5, spray granulating machine 6, sieve shaker 7 and pump housing II 8, transfer tank 1 is set to be communicated with phosphoric acid liquid finished product storage tanks, transfer tank 1 is set to be communicated with mixing tank 2 by chute, mixing tank 2 is set to be communicated with the washing acid hold-up vessel by pump housing II 8, mixing tank 2 is set to be communicated with neutralizing well 3, neutralizing well 3 is set to be communicated with the gaseous ammonia hold-up vessel by pump housing I 4, neutralizing well 3 is set to be communicated with upgrading tower 5, the exit end of upgrading tower 5 is set to be communicated with spray granulating machine 6, the exit end of spray granulating machine 6 is set to be communicated with sieve shaker 7.
In the present embodiment, in mixing tank 2 and neutralizing well 3, be provided with agitating vane, neutralizing well 3 is set to sealed.
At Rock Phosphate (72Min BPL), utilize wet method to produce dilute sulphuric acid, at P
2o
5the concentrated preparation of the dilute phosphoric acid that content is 18%-20% P
2o
5the concentrated phosphoric acid of the concentrated phosphoric acid that content is 44% is placed in clarifying process, makes phosphoric acid layering and precipitation, obtains P
2o
5the phosphoric acid sediment that content is 30-35%; In tempering tank, according to weight ratio 2-3:1, the dilute phosphoric acid that is concentration 18-20% and P
2o
5the phosphoric acid sediment that content is 30-35% is mixed, the intermediate blend I that to obtain phosphorus acid content be 20-25%, in neutralizing well, the mole number of first mole number/P according to N equals 1.3-1.35, the gaseous ammonia that is concentration 99% and intermediate blend I are 110 ℃ in normal pressure, temperature and carry out 0.5 hour neutralization reaction, and, by adding sulfuric acid to neutralize the method for unreacted gaseous ammonia, the mole number of mole number/P of its N is equaled to 1.4-1.45, obtain the intermediate blend II; In upgrading tower, the intermediate blend II is carried out to concentration response, the intermediate blend III that to obtain water content be 25%; Middle mixture III is carried out to spray granulating and sorting, obtain the ammophos finished product.
In the present embodiment, the phosphoric acid liquid that wet method is produced, general other P
2o
5the phosphoric acid liquid that content is 18-22% is milk sap after concentrated, layering after cooling in storage tanks, the general P of supernatant liquid
2o
5the phosphoric acid liquid that content is 40-55%, the general P of lower floor's liquid
2o
5the phosphoric acid liquid that content is 35-42%, discharge the finished product phosphoric acid liquid from 50-80CM position, distance storage tanks bottom, and the bits that obtain in the storage tanks bottom are just the phosphoric acid sediment in the present embodiment.The part by weight of phosphoric acid liquid and phosphoric acid sediment is 82:18.
The ammophos made by the present embodiment, its total nutrient is 57% wherein nitrogen content=13%, phosphorus content=44%, with the ammophos that the bicarbonate of ammonia used or liquefied ammonia make, compares its total nutrient and has improved 7%.
The utlity model has lower characteristics:
1, owing to having designed, use the intermediate blend I that gaseous ammonia is 20-25% to phosphorus acid content to carry out neutralization reaction, do not re-use bicarbonate of ammonia or liquid ammonia, increased the contact reacts Area and Speed of gaseous ammonia and intermediate blend I, therefore simplify the operation to the press filtration washing of phosphoric acid sediment, improved the quality of ammophos.
2, owing to having designed gaseous ammonia, under pressure, make gas phase and liquid phase rapid reaction, improved the quality of production efficiency and ammophos.
3, owing to having designed the intermediate blend I that phosphorus acid content is 20-25%, in this intermediate, with the neutralization of gaseous ammonia be best, the steady quality of the ammophos obtained.
Above-described embodiment is a kind of way of realization in the device technique field that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer provided by the utility model; other distortion according to scheme provided by the utility model; increase or reduce composition or step wherein; perhaps the technical field approaching with the utility model for other by the utility model, all belong to protection domain of the present utility model.
Claims (3)
1. a device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer is characterized in that: include the mixing tank (2) mixed for phosphoric acid sediment and washing acid, the pump housing I (4) be communicated with mixing tank (2) for the washing acid hold-up vessel, for gaseous ammonia, carrying out the neutralizing well (3) of neutralization reaction, the pump housing II (8) be communicated with neutralizing well (3) for the gaseous ammonia hold-up vessel.
2. the device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer according to claim 1, it is characterized in that: also include transfer tank (1), upgrading tower (5), spray granulating machine (6) and sieve shaker (7), transfer tank (1) is set to be communicated with phosphoric acid liquid finished product storage tanks, transfer tank (1) is set to be communicated with mixing tank (2) by chute, mixing tank (2) is set to be communicated with the washing acid hold-up vessel by pump housing II (8), mixing tank (2) is set to be communicated with neutralizing well (3), neutralizing well (3) is set to be communicated with the gaseous ammonia hold-up vessel by pump housing I (4), neutralizing well (3) is set to be communicated with upgrading tower (5), the exit end of upgrading tower (5) is set to be communicated with spray granulating machine (6), the exit end of spray granulating machine (6) is set to be communicated with sieve shaker (7).
3. the device that utilizes phosphoric acid sediment preparing phosphoric acid ammonium fertilizer according to claim 1, it is characterized in that: be provided with agitating vane in mixing tank (2) and neutralizing well (3), neutralizing well (3) is set to sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453662.5U CN203373282U (en) | 2013-07-29 | 2013-07-29 | Device for preparing ammonium phosphate fertilizer through phosphoric acid sediments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320453662.5U CN203373282U (en) | 2013-07-29 | 2013-07-29 | Device for preparing ammonium phosphate fertilizer through phosphoric acid sediments |
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| CN203373282U true CN203373282U (en) | 2014-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320453662.5U Expired - Fee Related CN203373282U (en) | 2013-07-29 | 2013-07-29 | Device for preparing ammonium phosphate fertilizer through phosphoric acid sediments |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746300A (en) * | 2017-09-07 | 2018-03-02 | 龙蟒大地农业有限公司 | A kind of ammonium two-nutrient compound fertilizer of sulphur phosphorus two and the method using the ammonium two-nutrient compound fertilizer of phosphorus ammonium by-product production sulphur phosphorus two |
-
2013
- 2013-07-29 CN CN201320453662.5U patent/CN203373282U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746300A (en) * | 2017-09-07 | 2018-03-02 | 龙蟒大地农业有限公司 | A kind of ammonium two-nutrient compound fertilizer of sulphur phosphorus two and the method using the ammonium two-nutrient compound fertilizer of phosphorus ammonium by-product production sulphur phosphorus two |
| CN107746300B (en) * | 2017-09-07 | 2021-08-13 | 龙蟒大地农业有限公司 | Sulfur-phosphorus-diammonium binary compound fertilizer and method for producing sulfur-phosphorus-diammonium binary compound fertilizer by utilizing phosphorus-ammonium byproduct |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20170729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |