CN207468202U - A kind of wet dilute phosphoric acid high-efficiency filtering and purifying device - Google Patents
A kind of wet dilute phosphoric acid high-efficiency filtering and purifying device Download PDFInfo
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- CN207468202U CN207468202U CN201721487375.0U CN201721487375U CN207468202U CN 207468202 U CN207468202 U CN 207468202U CN 201721487375 U CN201721487375 U CN 201721487375U CN 207468202 U CN207468202 U CN 207468202U
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- filtering
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- phosphoric acid
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Abstract
The utility model is related to phosphoric acid by wet process filtration arts, especially a kind of wet dilute phosphoric acid high-efficiency filtering and purifying device, the setting of structure and pipeline and connection relation by the device, realize the gravitational settling in upper strata is filtered, realize that two kinds of filter types of filtering of filter core are combined between filtering upper strata in filtering middle level, it realizes to the solid impurity particulate removal in wet dilute phosphoric acid so that the solid content in the phosphoric acid of preparation is reduced to≤0.6%, and high degree improves phosphoric acid quality；But also can on-line cleaning, improve the cleaning completeness to filter device, reduce cost.
Description
Technical field
The utility model is related to phosphoric acid by wet process filtration art, especially a kind of wet dilute phosphoric acid high-efficiency filtering and purifying dress
It puts and its method.
Background technology
Wet method phosphoric acid manufacture process is the main path of current phosphoric acid supply.During wet method phosphoric acid manufacture process,
It generally requires to be filtered phosphorus ore slurry, removing solid matter can obtain.At present, in phosphoric acid,diluted industry, Gu
There are mainly three types of body substance separation methods：Gravitational settling, centrifugation, filtering etc..Gravity settling device is huge, invests and runs
Maintenance cost is higher, and the tiny solid insoluble matter in phosphoric acid,diluted is not easy rapid subsidence, causes to enter in phosphoric acid,diluted, cause
Phosphoric acid,diluted solid content increases；Centrifugal separation equipment assembling is complicated, repair is inconvenient, and investment cost and energy consumption are higher, and
And in centrifugal process, there are ardealite of high viscosity and the precipitations such as four hypophosphite monohydrate hydrogen potassium iron aluminium complexs, easily block from
Scheming rotatable parts cause to shut down and repair complicated difficulty, and cost increases；Filtering, generally use is flame filter press or pressure
Filter is filtered processing, and this method causes equipment switching frequent due to being intermittent operation, and filter cloth cleaning is inconvenient, and
Filter process is still remained in a certain amount of fine grain impurity in phosphoric acid,diluted, causes still to remain in the phosphoric acid,diluted obtained a large amount of
Solid.
There is researcher by after filtering, being sent into phosphoric acid concentrating device to phosphoric acid,diluted, carry out concentrated phosphoric acid so that phosphorus
The concentration of acid gradually increases, and obtains：With the continuous increase of phosphoric acid concentration, in phosphoric acid, a large amount of solid particle, which is precipitated, comes,
It is deposited in the filter screen and graphite heat exchanger pipeline of sour circulating slot, the production capacity of phosphoric acid,diluted enrichment facility is caused to continuously decrease, clearly
Frequency increase is washed, causes phosphoric acid,diluted concentrated cost higher, cost increase；And by detection, the solid content of the phosphoric acid,diluted of acquisition
Maintain essentially in 1.8% or so.
In consideration of it, this researcher, for during wet method phosphoric acid manufacture process, filtering prepares phosphoric acid,diluted and provides a set of new clothes
It puts, enabling the effective quality for improving the phosphoric acid,diluted after filtering reduces solid content.
Utility model content
In order to solve the above technical problems existing in the prior art, it is efficient to provide a kind of wet dilute phosphoric acid for the utility model
Filtering and purifying and its method.
It is achieved particular by following technical scheme：
Wet dilute phosphoric acid high-efficiency filtering and purifying device, including buffer pool, buffer pool is connected with stoste pipe；Buffer pool is through too slow
Washing pipe is connected with filtering lower floor；Filtering lower floor upper end is provided with filtering middle level；Filtering middle level upper end is provided with filtering upper strata；Filtering
Upper strata is connected by clear liquid pipe with clean solution tank；Filtering upper strata is connected with return duct a；Filtering middle level is connected with return duct b；Return duct
A and return duct b is converged, and connected with buffer pool at convergence mouth；And it is respectively arranged with valve on return duct a and return duct b
C, valve d；Filtering middle level is connected with recoil tube, and recoil tube, into two branches, is recoil branch a respectively, anti-in the punishment of recoil branch
Rush branch b；Recoil branch b is connected by pump b with buffer pool；Valve b is provided on recoil branch a；Filter bottom and the dirt of lower floor
Mud sump connects, and valve e is provided on communicating pipe；Filtering lower floor connect with lotion pipeline, lotion pipeline successively by valve j, valve f and clearly
Washing lotion slot connects, and branch is opened up between valve j and valve f, and connect with branch pipe；Branch pipe is connected by pump a with cleaning liquid bath.Institute
It is separated between the filtering upper strata and filtering middle level stated using card, card is used to fix membrane module filter core.
It is preferred that it is provided with valve on the separator tube.
It is preferred that the recoil tube, valve a is provided in recoil branch to the pipeline between filtering middle level.
It is preferred that the valve b and/or valve c and/or valve d and/or valve e and/or valve f and/or valve j, by conducting wire and control
Panel is connected.
It is preferred that the valve a is connected by conducting wire and control panel.
It is preferred that it is provided with steam inlet on the filtering middle level.
It is preferred that the filtering middle level is connected with filtering lower floor.
The invention also provides a kind of wet dilute phosphoric acid high-efficiency filtering and purifying method, includes the following steps：
(1) before being switched on, the valve in addition to valve a is closed, phosphoric acid by wet process stoste is sent by stoste pipe in buffer pool, and
By pumping b by valve a, enter in filtering middle level from recoil tube, and constantly pump, until filtering middle level and filtering lower floor are filled
It fills up so that it forms positive pressure, and clear liquid is filtered into filtering upper strata, and by overflow manner, entered clearly by clear liquid pipe
In liquid pool, phosphoric acid,diluted after being filtered；
(2) middle level to be filtered and filtering lower floor be filled full, and pump b cannot pump material enter after, close valve
A opens valve b so that the material being pumped out by buffer pool enters by the branch b that recoils, recoil branch a in buffer pool；
(3) pump a, valve j are opened so that cleaning solution is admitted in filtering lower floor, the slurry in washing and filtering lower floor, and is increased
Lower floor is filtered with filtering the pressure in middle level so that clear liquid is filtered in filtering upper strata, opens valve c so that cleaning solution is by returning
Flow tube a is flowed into buffer pool, opens valve f, closes valve j, realizes slurry cleaning；
(4) valve d is opened so that slurry material is divided in filtering middle level middle and upper part, is entered in buffer pool by return duct b, together
When open valve e and separator tube so that filtering forms negative pressure in middle level, promotes to filter in the liquid reflux washing and filtering in upper strata
Layer, filtering lower floor in slurry so that slurry is entered in sludge-tank, and the partially liq in flushing process enter it is slow
It rushes in pond, realizes the cleaning to filter device, you can complete the processing of wet dilute phosphoric acid filtration, purification.
In above device and filter purification method, when filtering, it is anti-to filter supernatant liquid by internal pressure 0.02MPa
The period is rushed as 20min, recoil time 8s；It is scavenging period 3h for 24 hours that cleaning solution, which enters flushing cycle,；Cleaning solution is using dense
The dilute sulfuric acid for 12% is spent, cleaning solution temperature is 80 DEG C.It is preferred that in cleaning process, steam heating is passed through by steam inlet
Or air compressed gas is passed through, realize aeration.
Compared with prior art, the technique effect of the invention is embodied in：
The setting of structure and pipeline and connection relation by the device, realizes the gravitational settling in upper strata is filtered,
Filtering middle level realizes that two kinds of filter types of filtering of filter core are combined between filtering upper strata, realizes to consolidating in wet dilute phosphoric acid
Body impurity particle removes so that the solid content in the phosphoric acid of preparation is reduced to≤0.6%, and high degree improves phosphoric acid product
Matter；But also can on-line cleaning, improve the cleaning completeness to filter device, reduce cost.
Description of the drawings
Fig. 1 is the apparatus structure schematic diagram of the invention.
In 1- cleaning liquid bath 2- clean solution tank 3- sludge-tank 4- buffer pool 5- control panels 6- filtering upper strata 7- filterings
Layer 8- filtering lower floor 9- return duct a 10- return duct b 11- convergence mouth 12- clear liquid pipe 13- lotion pipeline 14- separator tubes
15- stoste pipe 16- recoil tubes 17- recoil branch 18- recoil branch a 19- recoil branch b 20- valve a 21- valve b 22- valves
C 23- valve d 24- valve e 25- valve f 26- valve j 27- branch pipes 28- pump a 29- pumps b.
Specific embodiment
It is limited below in conjunction with the accompanying drawings with specific embodiment the technical solution of the utility model is further, but
Claimed range is not only limited to made description.
Embodiment
As shown in Figure 1：Wet dilute phosphoric acid high-efficiency filtering and purifying device, including buffer pool 4, buffer pool 4 connects with stoste pipe 15
It is logical；Buffer pool 4 is connected by separator tube 14 with filtering lower floor 8；8 upper end of filtering lower floor is provided with filtering middle level 7；Filter middle level 7
Upper end is provided with filtering upper strata 6；Filtering upper strata 6 is connected by clear liquid pipe 12 with clean solution tank 2；Upper strata 6 and return duct a9 is filtered to connect
It is logical；Filtering middle level 7 is connected with return duct b10；Return duct a9 and return duct b10 is converged, and connect with buffer pool 4 at convergence mouth 11
It is logical；And valve c22, valve d23 are respectively arranged on return duct a9 and return duct b10；Filtering middle level 7 is connected with recoil tube 16,
Recoil tube 16 punishes into two branches in recoil branch 17, is recoil branch a18, recoil branch b19 respectively；Recoil branch b19
It is connected by pumping b29 with buffer pool 4；Valve b21 is provided on recoil branch a18；The bottom of filtering lower floor 8 is connected with sludge-tank 3,
And valve e24 is provided on communicating pipe；Filtering lower floor 8 connects with lotion pipeline 13, lotion pipeline 13 successively by valve j26, valve f25 and
Cleaning liquid bath 1 connects, and branch is opened up between valve j26 and valve f25, and connect with branch pipe 27；Branch pipe 27 is by pump a28 and clearly
Washing lotion slot 1 connects.
In certain embodiments, it is provided with valve on the separator tube 14.
In certain embodiments, the recoil tube 16 is set in recoil branch 17 to the pipeline between filtering middle level 7
There is valve a20.
In certain embodiments, the valve b21 and/or valve c22 and/or valve d23 and/or valve e24 and/or valve f25 and/
Or valve j26, it is connected by conducting wire and control panel 5.
In certain embodiments, the valve a20 is connected by conducting wire with control panel 5.
In certain embodiments, it is provided with steam inlet on the filtering middle level 7.
In certain embodiments, the filtering middle level 7 is connected with filtering lower floor 8.
In certain embodiments, it is separated between the filtering upper strata 6 and filtering middle level 7 using card, card is for solid
Determine membrane module filter core.
In certain embodiments, a kind of wet dilute phosphoric acid high-efficiency filtering and purifying method, includes the following steps：
(1) before being switched on, the valve in addition to valve a20 is closed, phosphoric acid by wet process stoste is sent into buffer pool 4 by stoste pipe 15
In, and by pump b29 by valve a20, enter in filtering middle level 7 from recoil tube 16, and constantly pump, until filtering middle level 7 with
And filtering lower floor 8 is loaded completely so that it forms positive pressure, and clear liquid is filtered into filtering upper strata 6, and pass through overflow manner,
It is entered in clean solution tank 2 by clear liquid pipe 12, phosphoric acid,diluted after being filtered；
(2) middle level 7 to be filtered and filtering lower floor 8 be filled full, and pump b29 cannot pump material enter after, close
Valve closing a20 opens valve b21 so that the material being pumped out by buffer pool 4 enters by the branch b19 that recoils, recoil branch a18
In buffer pool 4；
(3) pump a28, valve j26 are opened so that cleaning solution is admitted in filtering lower floor 8, the slurry in washing and filtering lower floor 8,
And increase filtering lower floor 8 with filtering the pressure in middle level 7 so that clear liquid is filtered in filtering upper strata 6, opens valve c22 so that
Cleaning solution is flowed by return duct a9 in buffer pool 4, opens valve f25, closes valve j26, realizes slurry cleaning；
(4) valve d23 is opened so that slurry material is divided in filtering 7 middle and upper part of middle level, and buffer pool 4 is entered by return duct b10
In, open simultaneously valve e24 and separator tube 14 so that filtering forms negative pressure in middle level 7, promotes to filter the liquid reflux in upper strata 6
Slurry in washing and filtering middle level 7, filtering lower floor 8 so that slurry is entered in sludge-tank, and the part in flushing process
Liquid is entered in buffer pool, realizes the cleaning to filter device, you can completes the processing of wet dilute phosphoric acid filtration, purification.
Claims (8)
1. a kind of wet dilute phosphoric acid high-efficiency filtering and purifying device, which is characterized in that including buffer pool (4), buffer pool (4) and stoste
Manage (15) connection；Buffer pool (4) is connected by separator tube (14) with filtering lower floor (8)；Filtering lower floor (8) upper end is provided with filtering
Middle level (7)；Filtering middle level (7) upper end is provided with filtering upper strata (6)；Upper strata (6) are filtered by clear liquid pipe (12) and clean solution tank (2)
Connection；Filtering upper strata (6) is connected with return duct a (9)；Filtering middle level (7) is connected with return duct b (10)；Return duct a (9) is with returning
Flow tube b (10) is converged at convergence mouth (11), and is connected with buffer pool (4)；And on return duct a (9) and return duct b (10)
It is respectively arranged with valve c (22), valve d (23)；Filtering middle level (7) is connected with recoil tube (16), and recoil tube (16) is in recoil branch
(17) punishment is recoil branch a (18), recoil branch b (19) respectively into two branches；Branch b (19) recoil by pump b (29)
It is connected with buffer pool (4)；Valve b (21) is provided on recoil branch a (18)；The bottom and sludge-tank (3) for filtering lower floor (8) connect
It is logical, and valve e (24) is provided on communicating pipe；Filtering lower floor (8) connects with lotion pipeline (13), and lotion pipeline (13) passes through valve successively
J (26), valve f (25) with cleaning liquid bath (1) connect, and branch is opened up between valve j (26) and valve f (25), and with branch pipe (27)
Connection；Branch pipe (27) is connected by pump a (28) with cleaning liquid bath (1).
2. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the separator tube (14)
On be provided with valve.
3. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the recoil tube
(16), it is provided with valve a (20) in recoil branch (17) to the pipeline between filtering middle level (7).
4. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the valve b (21) and/
Or valve c (22) and/or valve d (23) and/or valve e (24) and/or valve f (25) and/or valve j (26), by conducting wire and control panel
(5) it connects.
5. wet dilute phosphoric acid high-efficiency filtering and purifying device as claimed in claim 3, which is characterized in that valve a (20) warps
Conducting wire is crossed to connect with control panel (5).
6. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the filtering middle level
(7) steam inlet is provided on.
7. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the filtering middle level
(7) it is connected with filtering lower floor (8).
8. wet dilute phosphoric acid high-efficiency filtering and purifying device as described in claim 1, which is characterized in that the filtering upper strata
(6) it is separated between filtering middle level (7) using card, card is used to fix membrane module filter core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487375.0U CN207468202U (en) | 2017-11-09 | 2017-11-09 | A kind of wet dilute phosphoric acid high-efficiency filtering and purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721487375.0U CN207468202U (en) | 2017-11-09 | 2017-11-09 | A kind of wet dilute phosphoric acid high-efficiency filtering and purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207468202U true CN207468202U (en) | 2018-06-08 |
Family
ID=62263252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721487375.0U Expired - Fee Related CN207468202U (en) | 2017-11-09 | 2017-11-09 | A kind of wet dilute phosphoric acid high-efficiency filtering and purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207468202U (en) |
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2017
- 2017-11-09 CN CN201721487375.0U patent/CN207468202U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20211109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |