CN203006950U - Low-level sludge phosphorus recovery system - Google Patents
Low-level sludge phosphorus recovery system Download PDFInfo
- Publication number
- CN203006950U CN203006950U CN2012207372660U CN201220737266U CN203006950U CN 203006950 U CN203006950 U CN 203006950U CN 2012207372660 U CN2012207372660 U CN 2012207372660U CN 201220737266 U CN201220737266 U CN 201220737266U CN 203006950 U CN203006950 U CN 203006950U
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- Prior art keywords
- phosphoric acid
- circulation groove
- recovery system
- drain pipe
- tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model provides a low-level sludge phosphorus recovery system which is arranged on a sludge phosphorus recovery system; the sludge phosphorus recovery system comprises a sludge phosphorus combustion furnace, a hydration tower, a venture pipe, a cyclone demisting device, a screen mesh demisting device, a tail gas combustion furnace, a phosphoric acid circulating groove and a finished phosphoric acid circulating groove; an alkaline liquid groove and a storing tank are connected to the phosphoric acid circulating groove; a liquid outlet pipe of the storing tank is connected with a filter; the liquid outlet pipe of the filter is connected with a neutralizing tank; the liquid outlet pipe of the neutralizing tank is connected with an evaporative crystallizing tank; a discharge pipe of the evaporative crystallizing tank is connected with a centrifugal dewatering device; and the liquid outlet pipe and the discharge pipe are arranged on the centrifugal dewatering device, wherein the liquid outlet pipe is connected with an alkaline liquid sink; and the discharge pipe is connected with a dryer. When recovering lean sludge phosphorus, the alkaline liquid sink is used for providing alkaline liquid to absorb P2O5 in the sludge phosphorus gas, thus the absorption efficiency is greatly improved; the gained phosphate solution is recycled by being treated by the processing processes, namely, neutralizing, crystallizing, separating and drying; the whole process is reasonable in configuration, the working efficiency is high, the heat can be fully utilized, and the liquid can be recycled, so that the energy and materials can be prevented from wasting.
Description
Technical field
The utility model belongs to the phosphorous slurry recovery equipment technical field, relates to a kind of low-grade phosphorous slurry recovery system.
Background technology
Mud phosphorus is the by product that a kind of phosphorus of forming in the phosphorus production process and impurity mix, and main component comprises the phosphorus of 9%-50%, the solid impurity of 1%-5%, the water of 45%-90%.In mud phosphorus; the solia particle that phosphorus is had high absorption capacity wraps up; and form a kind of emulsoid together with water; at high temperature; the dipole molecule of phosphorus and water wraps up mutually; by form one deck solvation film protective layer after the hydration of the material such as silicon, iron, calcium and dust on the surface of phosphorus; protective layer has stoped the cohesion that is in contact with one another of yellow phosphorus particulate; make phosphorus be difficult to separate with other impurity; cause the recovery difficulty of phosphorus in mud phosphorus; contain some hypertoxic phosphides in mud phosphorus, do not deal carefully with and to cause severe contamination to environment.
Be the phosphorus composition in efficient recovery mud phosphorus, the applicant studies and has invented patented technology " phosphorous slurry recovery system ", the patent No.: ZL201120194463.8, and this patent utilization mud phosphorus burning is to the P in combustion gas
2O
5Carry out water-soluble recovery, obtain good result in practice.Yet the applicant also finds in actual applications, and for the lower mud phosphorus of grade, " phosphorous slurry recovery system " although patented technology also can reclaim phosphorus composition, and the equipment cycle operation often, the time is long, and the energy that expends is many, and economical and practical property is under some influence.
Summary of the invention
the utility model reclaims difficulty in prior art to phosphorus composition in low-grade mud phosphorus, and there is the equipment cycle operation in existing recovery technology often, time is long, and the problem that the energy that expends is many provides phosphorus composition in the low-grade mud phosphorus of a kind of low-grade phosphorous slurry recovery system recoveries, and this system is arranged in the phosphorous slurry recovery system, and the phosphorous slurry recovery system includes mud phosphorus roasting kiln, the hydration tower, one-level venturi, one-level cyclone defroster device, the secondary Venturi meter, secondary whirlwind demister, the silk screen demister, tail-gas combustion stove, the strong phosphoric acid circulation groove, dilute phosphoric acid circulation groove and finished product phosphoric acid groove, hydration tower are connected on mud phosphorus roasting kiln rear class, are connected to one-level venturi after the hydration tower, one-level cyclone defroster device, the secondary Venturi meter, secondary whirlwind demister connects the silk screen demister after secondary whirlwind demister, tail-gas combustion stove connects silk screen demister rear class, and the strong phosphoric acid circulation groove is connected on the hydration tower, one-level venturi, one-level cyclone defroster device outlet end, the dilute phosphoric acid circulation groove is connected on the secondary Venturi meter, secondary whirlwind demister, the silk screen demister, the tail-gas combustion stove lower end, the dilute phosphoric acid circulation groove has the liquid pipe to connect the strong phosphoric acid circulation groove, the strong phosphoric acid circulation groove has drain pipe to be connected into the product phosphoric acid groove, one group of liquid-inlet pipe and drain pipe are arranged on the strong phosphoric acid circulation groove, liquid-inlet pipe is connected with lye vat, drain pipe is connected with hold tank, the drain pipe of hold tank connects strainer, the drain pipe of strainer connects neutralization tank, the drain pipe of neutralization tank connects the evaporative crystallization tank, the discharge nozzle of evaporative crystallization tank connects centrifugal dehumidifier, drain pipe and discharge nozzle are installed on centrifugal dehumidifier, drain pipe connects the alkali lye pond, discharge nozzle connects dryer, the finished product output tube is housed on dryer.
In the phosphorous slurry recovery system, the smoke discharge pipe of tail-gas combustion stove is connected with dryer.
Adopt technique scheme, in the phosphorous slurry recovery system, mud phosphorus is after the burning of mud phosphorus roasting kiln, and the impurity that contains in mud phosphorus forms harmless slag, and the gas of generation is P soluble in water
2O
5Gas, P
2O
5Gas enters the hydration tower, in the hydration tower, by the soluble liquid that pumps in the strong phosphoric acid circulation groove to P
2O
5Spray, dissolve, P
2O
5After being dissolved in liquid, be back in the strong phosphoric acid circulation groove, do not dissolve the clean P that contains in the hydration tower
2O
5Gas, after continuation is dissolved in one-level venturi, one-level cyclone defroster device, secondary Venturi meter, secondary cyclone defroster, is liquefied, flow into strong phosphoric acid circulation groove and dilute phosphoric acid circulation groove, solution in the dilute phosphoric acid circulation groove pumps into the strong phosphoric acid circulation groove and recycles, after repeatedly circulating, spraying, liquid is recoverable after reaching finite concentration.
Due in the technical program, the strong phosphoric acid circulation groove is connected with an alkali lye pond, when processing low-grade mud phosphorus, alkali lye is fed the strong phosphoric acid circulation groove from the alkali lye pond, then feed the hydration tower P in spray hydration tower from the strong phosphoric acid circulation groove
2O
5Gas, the easier and P of alkali lye
2O
5Chemical reaction occurs form the phosphoric acid saline solution, after the phosphoric acid saline solution flows into the strong phosphoric acid groove, circulation-supplied is in hydration tower, one-level venturi, one-level cyclone defroster device, secondary Venturi meter, secondary whirlwind demister, silk screen demister, tail-gas combustion stove again by system, and P sprays, dissolves, liquefies
2O
5Gas, the solution of formation flows into strong phosphoric acid circulation groove and dilute phosphoric acid circulation groove, and the solution in the dilute phosphoric acid circulation groove recycles after pumping into the strong phosphoric acid circulation groove; When the phosphoric acid saline solution concentration that flows out after spray reaches finite concentration, phosphoric acid saline solution suction hold tank is prepared to carry out next step reclaim processing; Add man-hour in recovery, phosphoric acid saline solution strainer filtering impurity wherein, carry out in potential of hydrogen and allotment to neutralization tank again, make the phosphoric acid saline solution be neutral, after this in the evaporative crystallization tank, the phosphoric acid saline solution is carried out evaporative crystallization, phosphoric acid salt is separated out from liquid, the solidliquid mixture that obtains feeds centrifugal dehumidifier, in centrifugal dehumidifier, the mixed liquid of separating out is carried out centrifuge dehydration, the liquid return of deviating from enters the alkali lye pond, and solid is sent into drying machine drying and obtained the phosphoric acid salt finished product.
Owing to adopting alkali lye to suck P in the combustion gas of mud phosphorus in the technical program
2O
5, the efficient of its absorption improves greatly, can be when low-grade mud phosphorus burning, and the P that content in combustion gas is less
2O
5What absorb is cleaner, so the phosphorus content in spray solution can reach requirement fast, and the number of times of circulated sprinkling can greatly reduce, and is conducive to save energy, improves work efficiency; Adopt follow-up recovery manufacturing procedure, make phosphate solution after recovery in the neutralization of setting, crystallization, separation, dry manufacturing procedure, obtain high efficiency recovery processing, whole process configurations is reasonable, Btu utilization is abundant, and the waste of the energy and material is avoided in the liquids recovery utilization.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
embodiment: as shown in Figure 1, a kind of low-grade phosphorous slurry recovery system is arranged in the phosphorous slurry recovery system, and the phosphorous slurry recovery system includes mud phosphorus roasting kiln 1, hydration tower 2, one-level venturi 3, one-level cyclone defroster device 4, secondary Venturi meter 5, secondary whirlwind demister 6, silk screen demister 7, tail-gas combustion stove 8, strong phosphoric acid circulation groove 18, dilute phosphoric acid circulation groove 12 and finished product phosphoric acid groove 24, hydration tower 2 are connected on mud phosphorus roasting kiln 1 rear class, are connected to one-level venturi 3 after hydration tower 2, one-level cyclone defroster device 4, secondary Venturi meter 5, secondary whirlwind demister 6 connects silk screen demister 7 after secondary whirlwind demister 6, tail-gas combustion stove 8 connects silk screen demister 7 rear classes, and strong phosphoric acid circulation groove 18 is connected on hydration tower 2, one-level venturi 3, the outlet end of one-level cyclone defroster device 4, dilute phosphoric acid circulation groove 12 is connected on secondary Venturi meter 5, secondary whirlwind demister 6, silk screen demister 7, the outlet end of tail-gas combustion stove 8, dilute phosphoric acid circulation groove 12 has the liquid pipe to connect strong phosphoric acid circulation groove 18, strong phosphoric acid circulation groove 18 has drain pipe to be connected into product phosphoric acid groove 24, one group of liquid-inlet pipe 17 and drain pipe 21 are arranged on strong phosphoric acid circulation groove 18, liquid-inlet pipe 17 is connected with lye vat 16, drain pipe 21 is connected with hold tank 23, the drain pipe of hold tank 23 connects strainer 22, the drain pipe of strainer 22 connects neutralization tank 20, the drain pipe of neutralization tank 20 connects evaporative crystallization tank 19, the discharge nozzle of evaporative crystallization tank 19 connects centrifugal dehumidifier 15, drain pipe 14 and discharge nozzle 13 are installed on centrifugal dehumidifier 15, drain pipe 14 connects alkali lye pond 16, discharge nozzle 13 connects dryer 11, finished product output tube 10 is housed on dryer 11.
In the phosphorous slurry recovery system, the smoke discharge pipe 9 of tail-gas combustion stove 8 is connected with dryer 11.
Claims (2)
1. low-grade phosphorous slurry recovery system, be arranged in the phosphorous slurry recovery system, the phosphorous slurry recovery system includes mud phosphorus roasting kiln (1), hydration tower (2), one-level venturi (3), one-level cyclone defroster device (4), secondary Venturi meter (5), secondary whirlwind demister (6), silk screen demister (7), tail-gas combustion stove (8), strong phosphoric acid circulation groove (18), dilute phosphoric acid circulation groove (12) and finished product phosphoric acid groove (24), hydration tower (2) is connected on mud phosphorus roasting kiln (1) rear class, be connected to one-level venturi (3) after hydration tower (2), one-level cyclone defroster device (4), secondary Venturi meter (5), secondary whirlwind demister (6), connect silk screen demister (7) after secondary whirlwind demister (6), tail-gas combustion stove (8) connects silk screen demister (7) rear class, strong phosphoric acid circulation groove (18) is connected on hydration tower (2), one-level venturi (3), the outlet end of one-level cyclone defroster device (4), dilute phosphoric acid circulation groove (12) is connected on secondary Venturi meter (5), secondary whirlwind demister (6), silk screen demister (7), the outlet end of tail-gas combustion stove (8), dilute phosphoric acid circulation groove (12) has the liquid pipe to connect strong phosphoric acid circulation groove (18), strong phosphoric acid circulation groove (18) has drain pipe to be connected into product phosphoric acid groove (24), it is characterized in that: one group of liquid-inlet pipe (17) and drain pipe (21) are arranged on strong phosphoric acid circulation groove (18), liquid-inlet pipe (17) is connected with lye vat (16), drain pipe (21) is connected with hold tank (23), the drain pipe of hold tank (23) connects strainer (22), the drain pipe of strainer (22) connects neutralization tank (20), the drain pipe of neutralization tank (20) connects evaporative crystallization tank (19), the discharge nozzle of evaporative crystallization tank (19) connects centrifugal dehumidifier (15), upper drain pipe (14) and the discharge nozzle (13) installed of centrifugal dehumidifier (15), drain pipe (14) connects alkali lye pond (16), discharge nozzle (13) connects dryer (11), finished product output tube (10) is housed on dryer (11).
2. low-grade phosphorous slurry recovery according to claim 1 system is characterized in that: in the phosphorous slurry recovery system, the smoke discharge pipe (9) of tail-gas combustion stove (8) is connected with dryer (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207372660U CN203006950U (en) | 2012-12-28 | 2012-12-28 | Low-level sludge phosphorus recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207372660U CN203006950U (en) | 2012-12-28 | 2012-12-28 | Low-level sludge phosphorus recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203006950U true CN203006950U (en) | 2013-06-19 |
Family
ID=48598565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207372660U Expired - Lifetime CN203006950U (en) | 2012-12-28 | 2012-12-28 | Low-level sludge phosphorus recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203006950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043637A (en) * | 2012-12-28 | 2013-04-17 | 郭逢春 | System for recovering low-grade phosphorus from sludge |
-
2012
- 2012-12-28 CN CN2012207372660U patent/CN203006950U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043637A (en) * | 2012-12-28 | 2013-04-17 | 郭逢春 | System for recovering low-grade phosphorus from sludge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUNNAN JINZHEN PHOSPHATING TECHNOLOGY DEVELOPMENT Free format text: FORMER OWNER: GUO FENGCHUN Effective date: 20140924 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140924 Address after: 652600, No. 14 Hing Jiang Road, main street, Jiangchuan County, Yuxi, Yunnan Patentee after: Yunnan Jinzhen Phosphating Technology Development Co.,Ltd. Address before: 652600, No. 28, middle section, Zhenning Sea Road, Jiangchuan County, Yuxi, Yunnan Patentee before: Guo Fengchun |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160523 Address after: 652800 Yuxi City, Yunnan Province town of Huaning Panxi black mud slope Patentee after: Huaning Jinzhen Phosphating Technology Co.,Ltd. Address before: 652600, No. 14 Hing Jiang Road, main street, Jiangchuan County, Yuxi, Yunnan Patentee before: Yunnan Jinzhen Phosphating Technology Development Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 652800 Yuxi City, Yunnan Province town of Huaning Panxi black mud slope Patentee after: Huaning Jinzhen Environmental Technology Co.,Ltd. Address before: 652800 Yuxi City, Yunnan Province town of Huaning Panxi black mud slope Patentee before: Huaning Jinzhen Phosphating Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |