CN202185197U - Filter used for refined wet process phosphoric acid - Google Patents
Filter used for refined wet process phosphoric acid Download PDFInfo
- Publication number
- CN202185197U CN202185197U CN2011202335001U CN201120233500U CN202185197U CN 202185197 U CN202185197 U CN 202185197U CN 2011202335001 U CN2011202335001 U CN 2011202335001U CN 201120233500 U CN201120233500 U CN 201120233500U CN 202185197 U CN202185197 U CN 202185197U
- Authority
- CN
- China
- Prior art keywords
- filter
- pipe
- liquid
- collecting box
- phosphoric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000007670 refining Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 abstract description 19
- 239000007788 liquid Substances 0.000 abstract description 11
- TZCXTZWJZNENPQ-UHFFFAOYSA-L Barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 12
- 239000012065 filter cake Substances 0.000 description 8
- 239000010802 sludge Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- QGAVSDVURUSLQK-UHFFFAOYSA-N Ammonium heptamolybdate Chemical compound N.N.N.N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] QGAVSDVURUSLQK-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 229940010552 ammonium molybdate Drugs 0.000 description 2
- 235000018660 ammonium molybdate Nutrition 0.000 description 2
- 239000011609 ammonium molybdate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000005039 chemical industry Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 230000001376 precipitating Effects 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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Abstract
A filter used for refined wet process phosphoric acid comprises a cylinder body, a filtering pipe and a liquid outlet pipe, wherein a strainer plate and a bottom cover are arranged at the upper end and the lower end of the cylinder body respectively, the other surface of the strainer plate is connected with a top cover, the other end of the bottom cover is connected with a deslagging port, a feed opening and a water inlet are formed at the lateral part of the cylinder body, at least one filtering pipe is arranged on the strainer plate, one end of the filtering pipe extends into the cylinder body, the other end of the filtering pipe is connected with the liquid outlet pipe, at least one liquid collecting box is arranged on the strainer plate, one end of the liquid collecting box is communicated with at least one filtering pipe, the other end of the liquid collecting box is communicated with the liquid outlet pipe, and the other end of the liquid outlet pipe is communicated with a filtering pipe backblowing pipe closing valve, a middle valve, a filter backblowing closing valve, a filter and a collecting pipe. The filter used for refined wet process phosphoric acid has good filtration quality and high filtration efficiency.
Description
Technical field
The utility model relates to a kind of filter, relates in particular to a kind of filter that is used for refining phosphoric acid by wet process, specifically is applicable to filter sludge and the barium sulfate that produces in the refining phosphoric acid by wet process process.
Background technology
At present, in the production process of phosphoric acid by wet process, can produce a large amount of sludges during gelled acid, these sludges not only influence the quality as the phosphoric acid of commodity selling, also can influence the refining quality of phosphoric acid thereafter simultaneously.Usually adopt the polyacrylamide flocculation sediment in the industry, pressure filtration then, or the method that refilters behind two sections flocculation sediments removes sludge.Though flocculation sediment can remove most bigger solid particles, not precipitating the less sludge particles that goes down still is huge to the influence of filtering, and can cause the generation of postprecipitation thing; Therefore be necessary to improve the filter effect of sludge; But the very thickness owing to can become after the Phosphoric Acid Concentration is added sludge together, and viscosity is bigger; Make filter operation very difficult; Existing after all secondary filter equipment generally all designs to water treatment or wine brewing, sugar refining technology, and environment for use is the little neutral solution of viscosity basically, so be difficult to satisfy the needs of sludge filtration.
In addition, in the process of purification of phosphoric acid, also can produce barium sulfate, barium sulfate is a kind of water-fast white solid.It is very tiny when forming, and especially when the refining phosphoric acid the inside of solvent extraction removed sulfate radical, the barium sulfate particle diameter of generation had only 0.2 micron even littler, very easily wears filter during filtration.
The Chinese patent publication number is CN101357754A; The patent of invention that open day is on February 4th, 2009 discloses a kind of high-purity ammonium molybdate that is used for and has prepared stoste processing, the refining phosphoric acid by wet process Central Plains acid treatment of extraction and barium sulfate separation equipment and method; Belong to chemical industry equipment and method field, this invention comprises: solvent extraction prepares the separating step that phosphoric acid by wet process barium sulfate is made with extra care in the used former acid treatment step of the refining phosphoric acid by wet process of high-purity ammonium molybdate stoste processed steps, solvent extraction purification and solvent extraction.Though this invention can reduce and wear the filter phenomenon in the filter process; And can wash operation regeneration chimney filter through blowback, but it still has following shortcoming: at first, the chimney filter in this invention directly communicates with filtrate exit pipe; When filtering, be prone to bring impurity into filtrate exit pipe, thereby reduce filter quality; Secondly, because the chimney filter in this invention is arranged side by side on sieve plate, and to shelve filter cake be cone with position to be filtrated in the cylindrical shell bottom, thereby chimney filter can only cover the sub-fraction filter cake and wait to filtrate, and skewness greatly reduces filter efficiency.
Summary of the invention
The purpose of the utility model is to overcome defective and the problem that the filter quality that exists in the prior art is relatively poor, filter efficiency is not high, and the filter that is used for refining phosphoric acid by wet process that a kind of filter quality is better, filter efficiency is higher is provided.
For realizing above purpose; The technical solution of the utility model is: a kind of filter that is used for refining phosphoric acid by wet process, and this device comprises cylindrical shell, screen pipe and drain pipe, the two ends up and down of said cylindrical shell are respectively arranged with sieve plate and bottom; The another side of sieve plate is connected with top cover; The other end of bottom is connected with slag-drip opening, and the sidepiece of cylindrical shell is provided with charging aperture and water inlet, and sieve plate is provided with at least one screen pipe; One end of screen pipe extends to the inside of cylindrical shell, and the other end is connected with drain pipe; Said sieve plate is provided with at least one liquid-collecting box, and an end of liquid-collecting box communicates with at least one screen pipe, and the other end communicates with drain pipe, and the other end of drain pipe communicates with collecting pipe.
Position on the said drain pipe between liquid-collecting box, collecting pipe is disposed with screen pipe anti-blowpipe and valve, intermediate valve, filter anti-blowpipe and valve, filter.
The quantity of said liquid-collecting box is 10 of 4 –, and evenly is provided with along sieve plate; One end of said liquid-collecting box communicates with two screen pipes, and the other end communicates with drain pipe.
The quantity of said liquid-collecting box is 8.
Compared with prior art, the beneficial effect of the utility model is:
1, because a kind of filter sieve plate that is used for refining phosphoric acid by wet process of the utility model is provided with at least one liquid-collecting box, and an end of liquid-collecting box communicates with at least one screen pipe, the other end communicates with drain pipe; The other end of drain pipe communicates with collecting pipe; During use, be bridge, effectively avoided directly communicating of screen pipe and drain pipe with the liquid-collecting box; Greatly reduce impurity gets into drain pipe through screen pipe possibility; Improve filter quality, especially when being provided with filter between liquid-collecting box and the collecting pipe, can further improve filter quality.Therefore the filter quality of the utility model is better.
2, because a kind of quantity that is used for the filter liquid-collecting box of refining phosphoric acid by wet process of the utility model is 10 of 4 –; And evenly be provided with along sieve plate, an end of liquid-collecting box communicates with some screen pipes, and the other end communicates with drain pipe; This design makes liquid-collecting box and corresponding screen pipe thereof evenly be provided with along sieve plate; Thereby cause the other end of screen pipe evenly to distribute, be convenient to evenly cover whole filter cake and remain filtrating, help improving filter efficiency in the bottom of cylindrical shell; Especially the quantity when liquid-collecting box be 8, when liquid-collecting box communicates with two screen pipes, better effects if.Therefore the filter efficiency of the utility model is higher.
3, because a kind of filter that is used for refining phosphoric acid by wet process of the utility model is disposed with screen pipe anti-blowpipe and valve, intermediate valve, filter anti-blowpipe and valve, filter at the position between liquid-collecting box, collecting pipe on the drain pipe; During use; Filter can play the effect of filtering once more; Improve filter quality, simultaneously, can also carry out blowback to screen pipe and filter through screen pipe anti-blowpipe and valve, intermediate valve, filter anti-blowpipe and valve; Guarantee the cleaning of screen pipe and filter interior, thereby improve filter quality.Therefore the filter quality of the utility model is better.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the vertical view of sieve plate among Fig. 1.
Among the figure: cylindrical shell 1, screen pipe 2, drain pipe 3, intermediate valve 31, filter anti-blowpipe and valve 32, screen pipe anti-blowpipe and valve 33, sieve plate 4, bottom 5, slag-drip opening 51, top cover 6, charging aperture 7, water inlet 8, liquid-collecting box 9, collecting pipe 10, filter 11.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is done further detailed explanation.
Referring to figure 1 – Fig. 2, a kind of filter that is used for refining phosphoric acid by wet process, this device comprise cylindrical shell 1, screen pipe 2 and drain pipe 3; The two ends up and down of said cylindrical shell 1 are respectively arranged with sieve plate 4 and bottom 5, and the another side of sieve plate 4 is connected with top cover 6, and the other end of bottom 5 is connected with slag-drip opening 51; The sidepiece of cylindrical shell 1 is provided with charging aperture 7 and water inlet 8; Sieve plate 4 is provided with at least one screen pipe 2, and an end of screen pipe 2 extends to the inside of cylindrical shell 1, and the other end is connected with drain pipe 3; Said sieve plate 4 is provided with at least one liquid-collecting box 9, and an end of liquid-collecting box 9 communicates with at least one screen pipe 2, and the other end communicates with drain pipe 3, and the other end of drain pipe 3 communicates with collecting pipe 10.
Position on the said drain pipe 3 between liquid-collecting box 9, collecting pipe 10 is disposed with screen pipe anti-blowpipe and valve 33, intermediate valve 31, filter anti-blowpipe and valve 32, filter 11.
The quantity of said liquid-collecting box 9 is 10 of 4 –, and evenly is provided with along sieve plate 4; One end of said liquid-collecting box 9 communicates with two screen pipes 2, and the other end communicates with drain pipe 3.
The quantity of said liquid-collecting box 9 is 8.
During use, in liquid to be filtered, add powdered activated carbon earlier, stir again; Can obtain the pre-coated liquid of filter cake; With pump the pre-coated liquid of this filter cake is squeezed in the cylindrical shell 1 of filter to make filter cake through charging aperture 7 then, filter cake is positioned at the bottom of cylindrical shell 1, closes the pre-coated fluid valve of filter cake again; Open valve to be filtrated then, squeeze in the cylindrical shell 1 of filter with filtration to be filtrated through charging aperture 7 waiting to filtrate.When just beginning to filter, earlier filtrating is returned storage tank to be filtrated, to have prevented that wearing the filter phenomenon takes place, and waits filtrating to become limpid; Put into the filtrating storage tank again, at this moment, filtrating gets into the filtrating storage tank through screen pipe 2, liquid-collecting box 9, drain pipe 3, filter 11 with collecting pipe 10 backs successively, when finding that the rate of filtration obviously descends; Stop earlier filtering, emit filter residue and raffinate in the cylindrical shell 1 by slag-drip opening 51 then, again by water inlet 8 water inlets; Beginning washing and filtering pipe 2 is after the washing, again by collecting pipe 10 bubbling airs; Open respectively and respectively organize liquid-collecting box 9, drain pipe 3, screen pipe 2 and use the air blowback, thus the regeneration chimney filter, the filtration of regeneration continued.
Before the filtration; Open intermediate valve 31 earlier; And close filter anti-blowpipe and valve 32, screen pipe anti-blowpipe and valve 33, and behind screen pipe 2, liquid-collecting box 9, drain pipe 3, filter 11, collecting pipe 10, get into the filtrating storage tank successively by liquid to be filtered again, accomplish filter process.
During blowback filter 11, close intermediate valve 31 earlier, and open filter anti-blowpipe and valve 32, clear water or compressed air get into filter 11 from collecting pipe 10, discharge from filter anti-blowpipe and valve 32, thereby realize the blowback to filter 11.
During blowback screen pipe 2, open screen pipe anti-blowpipe and valve 33 earlier, close the valve on charging aperture 7 and the water inlet 8 again; Then clear water or compressed air are got into liquid-collecting box 9 from screen pipe anti-blowpipe and valve 33; Get into screen pipe 2 again, discharge from slag-drip opening 51 then, can carry out blowback screen pipe 2.
Claims (4)
1. filter that is used for refining phosphoric acid by wet process; This device comprises cylindrical shell (1), screen pipe (2) and drain pipe (3); The two ends up and down of said cylindrical shell (1) are respectively arranged with sieve plate (4) and bottom (5), and the another side of sieve plate (4) is connected with top cover (6), and the other end of bottom (5) is connected with slag-drip opening (51); The sidepiece of cylindrical shell (1) is provided with charging aperture (7) and water inlet (8); Sieve plate (4) is provided with at least one screen pipe (2), and an end of screen pipe (2) extends to the inside of cylindrical shell (1), and the other end is connected with drain pipe (3); It is characterized in that: said sieve plate (4) is provided with at least one liquid-collecting box (9); One end of liquid-collecting box (9) communicates with at least one screen pipe (2), and the other end communicates with drain pipe (3), and the other end of drain pipe (3) communicates with collecting pipe (10).
2. a kind of filter that is used for refining phosphoric acid by wet process according to claim 1 is characterized in that: be positioned at position between liquid-collecting box (9), the collecting pipe (10) on the said drain pipe (3) and be disposed with screen pipe anti-blowpipe and valve (33), intermediate valve (31), filter anti-blowpipe and valve (32), filter (11).
3. a kind of filter that is used for refining phosphoric acid by wet process according to claim 1 and 2, it is characterized in that: the quantity of said liquid-collecting box (9) is 10 of 4 –, and evenly is provided with along sieve plate (4); One end of said liquid-collecting box (9) communicates with two screen pipes (2), and the other end communicates with drain pipe (3).
4. a kind of filter that is used for refining phosphoric acid by wet process according to claim 2, it is characterized in that: the quantity of said liquid-collecting box (9) is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202335001U CN202185197U (en) | 2011-07-05 | 2011-07-05 | Filter used for refined wet process phosphoric acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202335001U CN202185197U (en) | 2011-07-05 | 2011-07-05 | Filter used for refined wet process phosphoric acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202185197U true CN202185197U (en) | 2012-04-11 |
Family
ID=45916676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202335001U Expired - Lifetime CN202185197U (en) | 2011-07-05 | 2011-07-05 | Filter used for refined wet process phosphoric acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202185197U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674281A (en) * | 2012-05-14 | 2012-09-19 | 瓮福（集团）有限责任公司 | Phosphoric acid refining device |
| CN104436790A (en) * | 2014-12-18 | 2015-03-25 | 萍乡市普天高科实业有限公司 | Filter |
| CN106241763A (en) * | 2016-08-11 | 2016-12-21 | 贵阳开磷化肥有限公司 | A kind of phosphor ammonium slurry defecator and filter method thereof |
| CN107281806A (en) * | 2017-07-19 | 2017-10-24 | 陈宗良 | A kind of marine alga liquid area synergist filter |
-
2011
- 2011-07-05 CN CN2011202335001U patent/CN202185197U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674281A (en) * | 2012-05-14 | 2012-09-19 | 瓮福（集团）有限责任公司 | Phosphoric acid refining device |
| CN102674281B (en) * | 2012-05-14 | 2013-08-07 | 瓮福（集团）有限责任公司 | Phosphoric acid refining device |
| CN104436790A (en) * | 2014-12-18 | 2015-03-25 | 萍乡市普天高科实业有限公司 | Filter |
| CN104436790B (en) * | 2014-12-18 | 2016-09-14 | 萍乡市普天高科实业有限公司 | Filter |
| CN106241763A (en) * | 2016-08-11 | 2016-12-21 | 贵阳开磷化肥有限公司 | A kind of phosphor ammonium slurry defecator and filter method thereof |
| CN106241763B (en) * | 2016-08-11 | 2018-09-25 | 贵阳开磷化肥有限公司 | A kind of phosphor ammonium slurry filter device and its filter method |
| CN107281806A (en) * | 2017-07-19 | 2017-10-24 | 陈宗良 | A kind of marine alga liquid area synergist filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120411 |