CN102772942A - Crystal filter for wet-process phosphoric acid concentrating device - Google Patents
Crystal filter for wet-process phosphoric acid concentrating device Download PDFInfo
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- CN102772942A CN102772942A CN2012102796204A CN201210279620A CN102772942A CN 102772942 A CN102772942 A CN 102772942A CN 2012102796204 A CN2012102796204 A CN 2012102796204A CN 201210279620 A CN201210279620 A CN 201210279620A CN 102772942 A CN102772942 A CN 102772942A
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- filter core
- filter
- phosphoric acid
- barrel
- cylindrical shell
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Abstract
The invention relates to a crystal filter for a wet-process phosphoric acid concentrating device. The crystal filter for the wet-process phosphoric acid concentrating device comprises a barrel, and a cylindrical filter core arranged in the barrel, wherein an annular channel is formed between the cylindrical lateral wall of the filter core and the lateral wall of the barrel; the top part of the filter core forms a taper; the taper top part of the filter core and the lateral wall are provided with filter holes with the apertures of 25-55mm; a liquid outlet led to the outside of the barrel is arranged at the bottom part of the filter core; the barrel is provided with a liquid inlet above the taper top part of the filter core; the bottom wall of the inner cavity of the barrel is tipsily arranged, and a bleed hole is arranged at the bottom part of the barrel. By filtering strong phosphoric acid concentrated in a flash chamber, a graphite pipe can be effectively prevented from being blocked, and the service life of a graphite heat exchanger is prolonged.
Description
Technical field
The present invention relates to be used for the equipment of phosphoric acid by wet process enrichment facility, specifically a kind of crystallization filter that is used for the phosphoric acid by wet process enrichment facility.
Background technology
The dense device of phosphoric acid by wet process acid adopts the mode of indirect, forced circulation and vacuum evaporation to carry out diluted acid and concentrates.The diluted acid of clarification gets into from graphite heat exchanger recycle acid outlet line; In recycle acid flows into cold boiler; Its required vacuum is provided by the secondary vacuum jet pump, and the moisture content in this phosphoric acid is evaporated, and phosphoric acid is concentrated; Finished product phosphoric acid is extracted out from taking over, and is pumped in the SPA storage tank by SPA.Recycle acid enters into graphite heat exchanger again under the promotion of axial-flow pump after cold boiler gets off, so circulation.But because in recent years, since the decline of rock phosphate in powder grade, the filter effect deviation, and sour matter descends, and after the higher diluted acid of impure amount gets into concentration systems, causes the concentration systems fouling serious.After wherein graphite-pipe is stopped up in the fouling of big particle diameter, can cause the circulating pump motor electric current to increase, outlet pressure increases, and makes graphite-pipe fragile, reduces the cycle of operation of enrichment facility.
Summary of the invention
The objective of the invention is to provide a kind of crystallization filter that is used for the phosphoric acid by wet process enrichment facility; SPA to concentrating through flash chamber filters; To remove the large granular impurity that is prone to cause the graphite-pipe obstruction, can prevent that graphite-pipe from stopping up, and prolongs its service life.
The technical scheme that the present invention adopts is: comprise cylindrical shell, place the tubular element in the cylindrical shell, form annular channel between filter core cylindrical sidewall and the cylinder lateral wall; The filter core top is tapered, has the filter opening of aperture at 23～26mm on filter core conical top and the sidewall, and the filter core bottom is provided with leads to the outer leakage fluid dram of cylindrical shell; Cylindrical shell is provided with inlet above the filter core conical top, the cylinder lumen diapire is inclined to set, and the cylindrical shell bottom is provided with slag-drip opening.SPA from flash chamber is got in the cylindrical shell by inlet, and SPA gets in the filter core and by leakage fluid dram and discharges, and is delivered to graphite heat exchanger through circulating pump.Filter residue is discharged through the slag-drip opening of cylindrical shell bottom.
Consider the effect of filter core top shunting, the tapering α of filter core conical top be 110 °～120 ° preferable.
In order to bear the pressure and the gravity of the phosphoric acid that directly gets off from flash chamber, filter core top drilling rate is unsuitable too high, and the filter core pitch-row of filter core conical top is that 45～55mm is better; Filter core side-wall hole rate can improve, and the filter core pitch-row is better at 25～35mm, can improve filter effect.
For the ease of deslagging, the angle of inclination of cylinder lumen diapire is 10 °～20 °.
The filter core bottom is provided with the scum pipe that the cylindrical shell two bottom sides is connected, and discharges so that slag-drip opening offside slag particle is slided into slag-drip opening under scum pipe passes filter core.
Can know by technique scheme; The present invention is through filtering the SPA that flash chamber concentrates; Interception large granular impurity foulant and some block foulant can prevent effectively that it from stopping up graphite-pipe, makes to prolong 5 years the service life of graphite heat exchanger.And filtration device structure is simple, and the SPA turnover is unobstructed, and filter efficiency is high, residue-discharge convenience.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the local enlarged diagram in A place among Fig. 1.
The specific embodiment
Structure of the present invention is as depicted in figs. 1 and 2, comprises cylindrical shell 1, places the tubular element 2 in the cylindrical shell, forms annular channel 14 between filter core 2 cylindrical sidewall and cylindrical shell 1 sidewall; Filter core 2 tops 21 are tapered, have the filter opening 24 of aperture at 25～55mm on filter core conical top 21 and the sidewall 23, and filter core 2 bottoms are provided with the leakage fluid dram 22 that leads to outside the cylindrical shell 1; Cylindrical shell 1 is provided with inlet 11 above filter core conical top 21, cylindrical shell 1 inner chamber diapire 13 is inclined to set, and the barrel of inclined floor 13 low spots one side of cylinder lumen is provided with slag-drip opening 12.Cylindrical shell 2 lower ends also are provided with horizontal mounting bracket 15.
The tapering α of filter core conical top 21 be 110 °～120 ° better, both helped shunting, can increase filter area again, the filtering function at performance top 21.
The filter core pitch-row of filter core conical top 21 is 45～55mm, and the filter core pitch-row of filter core sidewall 22 is 25～35mm.
The angle of inclination of cylinder lumen diapire 13 is 10 °～20 °, so that deslagging.
Let out under slag-drip opening 12 offside annular channels 14 bottom slag particles for convenient, filter core 2 bottoms are provided with the scum pipe 3 that cylindrical shell 1 two bottom sides is connected, and make slag-drip opening 12 offside slag particles pass filter core through scum pipe 3 and slide into slag-drip opening 12 discharges for 2 times.
SPA from flash chamber is got in the cylindrical shell 1 by inlet 11; Flowed into annular channel 14 in 21 minutes through the filter core conical top; The filter opening 24 of SPA on filter core top 21 and sidewall 23 gets into filter core 2 inner chambers, and discharged by leakage fluid dram 22, is delivered to graphite heat exchanger through circulating pump.Cake deposition in annular channel 4 bottoms and scum pipe 3 and cylinder lumen diapire 13 glide, discharge by slag-drip opening 12.
Claims (5)
1. be used for the crystallization filter of phosphoric acid by wet process enrichment facility, it is characterized in that: comprise cylindrical shell (1), place the tubular element (2) in the cylindrical shell, form annular channel (14) between filter core (2) cylindrical sidewall and the cylinder lateral wall; Filter core top (21) is tapered, has the filter opening (24) of aperture at 23～26mm on filter core conical top (21) and the sidewall (23), and filter core (2) bottom is provided with leads to the outer leakage fluid dram (22) of cylindrical shell (1); Cylindrical shell (1) is provided with inlet (11) in filter core conical top (21) top, and cylinder lumen diapire (13) is inclined to set, and cylindrical shell (1) bottom is provided with slag-drip opening (12).
2. the crystallization filter that is used for the phosphoric acid by wet process enrichment facility according to claim 1 is characterized in that: the tapering α of filter core conical top (21) is 110 °～120 °.
3. the crystallization filter that is used for the phosphoric acid by wet process enrichment facility according to claim 2 is characterized in that: the filter core pitch-row of filter core conical top (21) is 45～55mm, and the filter core pitch-row of filter core sidewall (23) is 25～35mm.
4. the crystallization filter that is used for the phosphoric acid by wet process enrichment facility according to claim 1 is characterized in that: the angle of inclination of cylinder lumen diapire (13) is 10 °～20 °.
5. the crystallization filter that is used for the phosphoric acid by wet process enrichment facility according to claim 4 is characterized in that: filter core (2) bottom is provided with the scum pipe (3) that cylindrical shell (1) two bottom sides is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279620.4A CN102772942B (en) | 2012-08-08 | 2012-08-08 | Crystal filter for wet-process phosphoric acid concentrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210279620.4A CN102772942B (en) | 2012-08-08 | 2012-08-08 | Crystal filter for wet-process phosphoric acid concentrating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102772942A true CN102772942A (en) | 2012-11-14 |
| CN102772942B CN102772942B (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210279620.4A Active CN102772942B (en) | 2012-08-08 | 2012-08-08 | Crystal filter for wet-process phosphoric acid concentrating device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102772942B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522171A (en) * | 2017-08-22 | 2017-12-29 | 贵州开磷集团矿肥有限责任公司 | A kind of production technology of stability contorting concentrated phosphoric acid mass fraction |
| CN112973163A (en) * | 2021-04-02 | 2021-06-18 | 中国五环工程有限公司 | High-level flash cooler for wet-process phosphoric acid |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295520Y (en) * | 1997-06-06 | 1998-10-28 | 刘猛 | Automatic rotary filtering net for counterflush |
| CN2391662Y (en) * | 1999-08-31 | 2000-08-16 | 江苏海鸥冷却塔股份有限公司 | Rotary type filtering apparatus |
| US20080105609A1 (en) * | 2006-11-08 | 2008-05-08 | Conserv Manufacturing | Liquid Filter |
| CN201284234Y (en) * | 2008-11-13 | 2009-08-05 | 贵州开磷（集团）有限责任公司 | Wet phosphoric acid concentrate apparatus with crystal filter |
| CN102160942A (en) * | 2011-04-27 | 2011-08-24 | 杨淼 | Filter |
| CN202219112U (en) * | 2011-09-09 | 2012-05-16 | 上海奥格利环保工程有限公司 | Low temperature waste heat recovery spray acid filter |
| CN202740852U (en) * | 2012-08-08 | 2013-02-20 | 安徽六国化工股份有限公司 | Crystallizing filter for wet-process phosphoric acid concentrating device |
-
2012
- 2012-08-08 CN CN201210279620.4A patent/CN102772942B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2295520Y (en) * | 1997-06-06 | 1998-10-28 | 刘猛 | Automatic rotary filtering net for counterflush |
| CN2391662Y (en) * | 1999-08-31 | 2000-08-16 | 江苏海鸥冷却塔股份有限公司 | Rotary type filtering apparatus |
| US20080105609A1 (en) * | 2006-11-08 | 2008-05-08 | Conserv Manufacturing | Liquid Filter |
| CN201284234Y (en) * | 2008-11-13 | 2009-08-05 | 贵州开磷（集团）有限责任公司 | Wet phosphoric acid concentrate apparatus with crystal filter |
| CN102160942A (en) * | 2011-04-27 | 2011-08-24 | 杨淼 | Filter |
| CN202219112U (en) * | 2011-09-09 | 2012-05-16 | 上海奥格利环保工程有限公司 | Low temperature waste heat recovery spray acid filter |
| CN202740852U (en) * | 2012-08-08 | 2013-02-20 | 安徽六国化工股份有限公司 | Crystallizing filter for wet-process phosphoric acid concentrating device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107522171A (en) * | 2017-08-22 | 2017-12-29 | 贵州开磷集团矿肥有限责任公司 | A kind of production technology of stability contorting concentrated phosphoric acid mass fraction |
| CN112973163A (en) * | 2021-04-02 | 2021-06-18 | 中国五环工程有限公司 | High-level flash cooler for wet-process phosphoric acid |
| CN112973163B (en) * | 2021-04-02 | 2022-03-29 | 中国五环工程有限公司 | High-level flash cooler for wet-process phosphoric acid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102772942B (en) | 2015-07-15 |
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