CN201694847U

CN201694847U - Purification device of phosphoric acid

Info

Publication number: CN201694847U
Application number: CN2010202085088U
Authority: CN
Inventors: 王邵东; 李红林; 骆广生; 王平
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2010-05-31
Filing date: 2010-05-31
Publication date: 2011-01-05
Anticipated expiration: 2020-05-31

Abstract

The utility model discloses a purification device of phosphoric acid, which comprises an extraction device, a washing device and a back extraction device, wherein the extraction device and the back extraction device comprise a group of emulsifying machine and phase splitting equipment and a group of mixer and phase splitting equipment, or also additionally comprise a group of or a plurality of groups of emulsifying machines and phase splitting equipment (or mixers and phase splitting equipment); and the washing device adopts a pulse column as mass transfer equipment. A primary solvent inlet of the extraction device is connected with a light-phase outlet of the last-stage phase splitting equipment of the back extraction device, a light-phase inlet of a washing column is connected with a light-phase outlet of the last-stage phase splitting equipment of the extraction device, and a solvent inlet of the back extraction device is connected with a light-phase outlet of the washing column. The utility model can reinforce the mass transfer performance, enhances the purification efficiency, lowers the equipment investment and the running cost and has small floor area.

Description

Phosphoric acid purification device

Technical field

The utility model relates to this chemical industry equipment field, relates in particular to a kind of phosphoric acid purification device.

Background technology

Is advanced at present phosphoric acid purification technology with pulse-column as the solvent extraction technology of mass transfer apparatus, and pulse-column mass-transfer efficiency height can be produced high-quality purifying phosphoric acid.But this equipment making expense is higher, and for preventing to reveal, its tower body is generally moulded, the internal cleaning difficulty.In the phosphoric acid extraction process, phosphoric acid contacts with organic solvent anti-phase in extraction tower, and the partial impurities in the phosphoric acid separates out with sedimentary form.Wherein partly precipitated is along with raffinate is discharged outside the tower, and some precipitates and forms the tower dirt on attached long-pending tower wall and the column plate.Along with the lengthening of time, the tower dirt is cumulative, and structure is more and more finer and close.When the tower dirt was accumulated to certain degree, the tower interior passageway stopped up serious, and the Flow of Goods and Materials and the way of contact are changed in the tower, have a strong impact on effect of extracting.Because of tower dirt component complexity, compact structure will be replaced the obnoxious flavour in the tower during with artificial the cleaning, and it is big to clean difficulty, and the time is long and can not clean the dirty piece at tower body middle part.

In washing process, considerably less because of the material foreign matter content, the tower dirt amount of generation does not seldom cause detrimentally affect to production substantially.

The rotor of mulser and stator are under the high-speed driving of motor, bear the inferior shearing action of hundreds of thousands of at short notice, because the powerful kinetic energy that high linear speed that the rotor high-speed rotation is produced and high frequency machinery effect belt come, make that material is subjected to intensive machinery and fluid power shearing, centrifugal extruding, liquid layer friction in the accurate gap of stator and rotor, high-speed impact is torn with comprehensive action such as turbulent flow under division, broken, disperse, thereby make immiscible material in the abundant dispersion in moment uniform, fine ground, emulsification, homogeneous, dissolving.Mulser cleans easily and is cheap, and mulser is widely used in fine chemistry industry at present: resin emulsification, silicone oil emulsification, carbon black dispersion, fillers dispersed etc.; Be applied to petrochemical complex: heavy oil emulsive, emulsified bitumen, wax emulsification etc.; Biological medicine: microcapsule emulsification, medicine emulsion, cell tissue fragmentation etc.

Mixing tank has important application in numerous hybrid reactions fields such as chemistry, chemical industry, petrochemical industry, medicine and food.This equipment mass transfer area is big, the reaction conversion ratio height; Cost of equipment is low, and is simple to operate; Regulate single passage width and parallel access volume and accomplish scale production, the device processes amount is big.Chinese patent publication number CN1807277A, disclosed on 02 22nd, 2006 " a kind of multi-channeled micro-structured reactor ", continuous phase fluid enters reactor from the inlet tube distribution chamber in this reactor, dispersed phase fluid is passed dispersion medium and is entered the external phase parallel channels, under continuous phase fluid flows shear action, be dispersed into fine droplet or bubble, contact, realize short mix and reaction between two-phase fluid with continuous phase fluid.

Summary of the invention

The purpose of this utility model be to overcome above-mentioned shortcoming and provide a kind of can the reinforcing mass transfer performance, improve purification efficiency, reduce the phosphoric acid purification device of facility investment and working cost.

A kind of phosphoric acid purification device of the present utility model, comprise extraction plant, washing device and back extraction device, wherein: extraction plant phase splitting device B light phase export connects with the light admission port mutually of washing tower, washing device washing tower light phase export is connected with the back extraction device solvent inlet, and back extraction device secondary light phase export is connected with the extraction plant solvent inlet;

Extraction plant comprises extraction plant mulser A and extraction plant phase splitting device A, extraction plant mixing tank A and extraction plant phase splitting device B, extraction plant mulser A is provided with extraction plant mulser A import, extraction plant mulser A outlet, collection device phase splitting device A is provided with the import of extraction plant mixed phase, extraction plant heavy out and extraction plant light phase export, the import of extraction plant mulser is connected with the extraction plant solvent inlet with the import of extraction plant phosphoric acid, and extraction plant mulser A outlet is connected with the import of extraction plant phase splitting device A mixed phase; Extraction plant mixing tank A is provided with extraction plant mixing tank A continuous phase fluid inlet, extraction plant mixing tank A dispersed phase fluid inlet and the outlet of extraction plant mixing tank A mixed phase fluid, extraction plant phase splitting device B is provided with the import of extraction plant phase splitting device B mixed phase, extraction plant phase splitting device B light phase export and extraction plant phase splitting device B heavy out, and the outlet of extraction plant mixing tank A continuous phase fluid is connected with the import of extraction plant phase splitting device B mixed phase; Extraction plant phase splitting device A light phase export is connected with extraction plant mixing tank A continuous phase fluid inlet, and extraction plant phase splitting device B heavy out is connected with the import of extraction plant phosphoric acid;

Washing device comprises washing tower, and washing tower is provided with the import of the light phase import of washing tower washing acid, and washing tower light phase export, washing tower are washed the spent acid outlet;

Back extraction device comprises back extraction device mulser A and back extraction device phase splitting device A, back extraction device mixing tank A and back extraction device phase splitting device B, back extraction device mulser A is provided with back extraction device mulser A import, back extraction device mulser A outlet, collection device phase splitting device A is provided with the import of back extraction device mixed phase, back extraction device heavy out and back extraction device light phase export, back extraction device mulser A import is connected with import of back extraction device phosphoric acid and back extraction device solvent inlet, and back extraction device mulser A outlet is connected with the import of back extraction device mixed phase; Back extraction device mixing tank A is provided with back extraction device mixing tank A continuous phase fluid inlet, back extraction device mixing tank A dispersed phase fluid inlet and the outlet of back extraction device mixing tank A mixed phase fluid, back extraction device phase splitting device B is provided with the import of back extraction device phase splitting device B mixed phase, back extraction device phase splitting device B light phase export and back extraction device phase-splitting groove B heavy out, and the outlet of back extraction device mixing tank A mixed phase fluid is connected with the import of back extraction device phase splitting device B mixed phase; The back extraction device light phase export is connected with back extraction device mixing tank A continuous phase fluid inlet, and back extraction device phase-splitting groove B heavy out is connected with the import of back extraction device phosphoric acid.

Above-mentioned phosphoric acid purification device, wherein: extraction plant comprises extraction plant mulser B and extraction plant phase splitting device C, extraction plant mulser B is provided with B import of extraction plant mulser and extraction plant mulser B outlet, extraction plant phase splitting device C is provided with the import of extraction plant phase splitting device C mixed phase, extraction plant phase splitting device C heavy out and extraction plant phase splitting device C light phase export, three grades of phosphoric acid imports of extraction plant mulser B import and extraction plant are connected with three grades of solvent inlets 26 of extraction plant, and extraction plant mulser B outlet is connected with the import of extraction plant phase splitting device C mixed phase; Three grades of solvent inlets of extraction plant phase splitting device B light phase export and extraction plant are connected, extraction plant phase splitting device C heavy out is connected with extraction plant mixing tank A dispersed phase fluid inlet, and extraction plant phase splitting device C light phase export connects with the light admission port mutually of washing tower;

Back extraction device comprises back extraction device mulser B and back extraction device phase splitting device C, back extraction device mulser B is provided with back extraction device mulser B import, back extraction device mulser B outlet, back extraction device phase splitting device C is provided with the import of back extraction device phase splitting device C mixed phase, back extraction device phase splitting device C heavy out and back extraction device phase splitting device C light phase export, three grades of phosphoric acid imports of back extraction device mulser B import and back extraction device are connected with three grades of solvent inlets of back extraction device, and back extraction device mulser B outlet is connected with the import of back extraction device phase splitting device C mixed phase; Three grades of solvent inlets of back extraction device phase splitting device B light phase export and back extraction device are connected, back extraction device phase splitting device C heavy out is connected with back extraction device mixing tank A dispersed phase fluid inlet, and back extraction device phase splitting device C light phase export is connected with the extraction plant solvent inlet.

Above-mentioned phosphoric acid purification device, wherein: extraction plant comprises extraction plant mixing tank B and extraction plant phase splitting device D, extraction plant mixing tank B is provided with extraction plant mixing tank B continuous phase fluid inlet, extraction plant mixing tank B dispersed phase fluid inlet and the outlet of extraction plant mixing tank B mixed phase fluid, extraction plant phase splitting device D is provided with the import of extraction plant phase splitting device D mixed phase, extraction plant phase splitting device D light phase export and extraction plant phase splitting device D heavy out, the outlet of extraction plant mixing tank B mixed phase fluid is connected with the import of extraction plant phase splitting device D mixed phase; Extraction plant phase splitting device B light phase export is connected with extraction plant mixing tank B continuous phase fluid inlet, extraction plant phase splitting device D heavy out is connected with extraction plant mixing tank A dispersed phase fluid inlet, and extraction plant phase splitting device D light phase export connects with the light admission port mutually of washing tower;

Back extraction device comprises back extraction device mixing tank B and back extraction device phase splitting device D, back extraction device mixing tank B is provided with back extraction device mixing tank B continuous phase fluid inlet, back extraction device mixing tank B dispersed phase fluid inlet and the outlet of back extraction device mixing tank B mixed phase fluid, back extraction device phase splitting device D is provided with the import of back extraction device phase splitting device D mixed phase, back extraction device phase splitting device D light phase export and back extraction device phase splitting device D heavy out, and the outlet of back extraction device mixing tank B mixed phase fluid is connected with the import of back extraction device phase splitting device D mixed phase; Back extraction device phase splitting device B light phase export is connected with back extraction device mixing tank B continuous phase fluid inlet, back extraction device phase splitting device D heavy out is connected with back extraction device mixing tank A dispersed phase fluid inlet, and back extraction device phase splitting device D light phase export is connected with the extraction plant solvent inlet.

Above-mentioned phosphoric acid purification device, wherein: phase splitting device is the equipment that phase-splitting groove or clarifying tank etc. reach the phase-splitting purpose.

Above-mentioned phosphoric acid purification device, wherein: mulser divides mulser for the pipeline high-shear.

The utility model compared with prior art, as can be known from the above technical solutions, require difference according to purifying, wherein: extraction plant, back extraction device comprise one group of mulser and phase splitting device and one group of mixing tank and phase splitting device, or increase one or more groups mulser and phase splitting device (or mixing tank and phase splitting device) on aforesaid combination; Washing device selects for use pulse-column as mass transfer apparatus; In the phosphoric acid purification process, feed phosphoric acid (fresh phosphoric) adds by mixing tank, mulser dispersed phase fluid inlet, the phosphoric acid import of final stage extraction plant, and washing acid (purifying phosphoric acid), de-salted water add by the import of washing device washing acid, the import of back extraction device reverse-extraction agent.The no-load solvent of extraction plant one-level solvent inlet is from the light phase export of back extraction device final stage phase splitting device, the loaded solvent of the light phase admission port of washing tower is from the light phase export of extraction plant final stage phase splitting device, and the loaded solvent of back extraction device solvent inlet is from the light phase export of washing tower.Because mulser, mixing tank, pulse-column mass transfer area are big, the mass-transfer efficiency height.The mixed solution that comes out from mulser, mixing tank, pulse-column is easy to phase-splitting, thereby guarantees to divide phase effect.The purifying phosphoric acid foreign matter content that obtains is low, but by refining production food grade and electron-level phosphoric acid.System's material loading level is little, avoids hazardous material (fluids) (as phosphoric acid, organic extractant) to leak in a large number and the peace ring accident that causes; Mulser, mixing tank cost are low, can save facility investment.

Description of drawings

Fig. 1 is embodiment 1 structural representation;

Fig. 2 is embodiment 2 structural representations;

Fig. 3 is embodiment 3 structural representations.

Mark among the figure:

1, extraction plant one-level mulser A, 2, extraction plant phase splitting device A, 3, extraction plant mulser A import, 4, extraction plant mulser A outlet, 5, the import of extraction plant mixed phase, 6, the extraction plant heavy out, 7, the extraction plant light phase export, 8, the import of extraction plant phosphoric acid, 9, the extraction plant solvent inlet, 10, extraction plant mixing tank A, 11, extraction plant phase splitting device B, 12, extraction plant mixing tank A continuous phase fluid inlet, 13, extraction plant mixing tank A dispersed phase fluid inlet, 14, the outlet of extraction plant mixing tank A mixed phase fluid, 15, the import of extraction plant phase splitting device B mixed phase, 16, extraction plant phase splitting device B light phase export, 17, extraction plant phase splitting device B heavy out, 18, extraction plant mulser B, 19, extraction plant phase splitting device C, 20, extraction plant mulser B import, 21, extraction plant mulser B outlet, 22, the import of extraction plant phase splitting device C mixed phase, 23, extraction plant phase splitting device C heavy out, 24, extraction plant phase splitting device C light phase export, 25, three grades of phosphoric acid imports of extraction plant, 26, three grades of solvent inlets of extraction plant, 27, extraction plant mixing tank B, 28, extraction plant phase splitting device D, 29, extraction plant mixing tank B continuous phase fluid inlet, 30, extraction plant mixing tank B dispersed phase fluid inlet, 31, the outlet of extraction plant mixing tank B mixed phase fluid, 32, the import of extraction plant phase splitting device D mixed phase, 33, extraction plant phase splitting device D light phase export, 34, extraction plant phase splitting device D heavy out, 35, the washing device washing tower, 36, the import of washing tower washing acid, 37, the light phase import of washing tower, 38, the washing tower heavy out, 39, washing tower is washed the spent acid outlet, 40, back extraction device mulser A, 41, back extraction device phase splitting device A, 42, back extraction device mulser A import, 43, back extraction device mulser A outlet, 44, the import of back extraction device mixed phase, 45, the back extraction device heavy out, 46, the back extraction device light phase export, 47, the import of back extraction device phosphoric acid, 48, the back extraction device solvent inlet, 49, back extraction device mixing tank A, 50, back extraction device phase splitting device B, 51, back extraction device mixing tank A continuous phase fluid inlet, 52, back extraction device mixing tank A dispersed phase fluid inlet, 53, the outlet of back extraction device mixing tank A mixed phase fluid, 54, the import of back extraction device phase splitting device B mixed phase, 55, back extraction device phase splitting device B light phase export, 56, back extraction device phase-splitting groove B heavy out, 57, back extraction device mulser B, 58, back extraction device phase splitting device C, 59, back extraction device mulser B import, 60, back extraction device mulser B outlet, 61, the import of back extraction device phase splitting device C mixed phase, 62, back extraction device phase splitting device C heavy out, 63, back extraction device phase splitting device C light phase export, 64, three grades of phosphoric acid imports of back extraction device, 65, three grades of solvent inlets of back extraction device, 66, back extraction device mixing tank B, 67, back extraction device phase splitting device D, 68, back extraction device mixing tank B continuous phase fluid inlet, 69, back extraction device mixing tank B dispersed phase fluid inlet, 70, the outlet of back extraction device mixing tank B mixed phase fluid, 71, the import of back extraction device phase splitting device D mixed phase, 72, back extraction device phase splitting device D light phase export, 73, back extraction device phase splitting device D heavy out.

Embodiment

Below in conjunction with accompanying drawing, its embodiment of phosphoric acid purification device, structure, feature and effect thereof to foundation the utility model proposes are described in detail as follows:

Embodiment 1

Referring to Fig. 1, the extraction of employing secondary, the phosphoric acid purification device of one-level washing and secondary back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant phase splitting device B light phase export 16 connects with the light admission port mutually 37 of washing tower, washing device washing tower light phase export 38 is connected with back extraction device solvent inlet 48, and back extraction device secondary light phase export 55 is connected with extraction plant solvent inlet 9;

Extraction plant comprises extraction plant mulser A1 and extraction plant phase splitting device A2, extraction plant mixing tank A10 and extraction plant phase splitting device B11, extraction plant mulser A1 is provided with extraction plant mulser A import 3, extraction plant mulser A outlet 4, collection device phase splitting device A2 is provided with extraction plant mixed phase import 5, extraction plant heavy out 6 and extraction plant light phase export 7, extraction plant mulser import 3 is connected with extraction plant solvent inlet 9 with extraction plant phosphoric acid import 8, and extraction plant mulser A outlet 4 is connected with extraction plant phase splitting device A mixed phase import 5; Extraction plant mixing tank A10 is provided with extraction plant mixing tank A continuous phase fluid inlet 12, extraction plant mixing tank A dispersed phase fluid inlet 13 and extraction plant mixing tank A mixed phase fluid outlet 14, extraction plant phase splitting device B11 is provided with extraction plant phase splitting device B mixed phase import 15, extraction plant phase splitting device B light phase export 16 and extraction plant phase splitting device B heavy out 17, and extraction plant mixing tank A continuous phase fluid outlet 14 is connected with extraction plant phase splitting device B mixed phase import 15; Extraction plant phase splitting device A light phase export 7 is connected with extraction plant mixing tank A continuous phase fluid inlet 12, and extraction plant phase splitting device B heavy out 17 is connected with extraction plant phosphoric acid import 8;

Washing device comprises washing tower 35, and washing tower 35 is provided with the light phase import 37 washing acid imports 36 of washing tower, and washing tower light phase export 38, washing tower are washed spent acid outlet 39;

Back extraction device comprises back extraction device mulser A40 and back extraction device phase splitting device A41, back extraction device mixing tank A49 and back extraction device phase splitting device B50, back extraction device mulser A40 is provided with back extraction device mulser A import 42, back extraction device mulser A outlet 43, collection device phase splitting device A41 is provided with back extraction device mixed phase import 44, back extraction device heavy out 45 and back extraction device light phase export 46, back extraction device mulser A import 42 is connected with back extraction device phosphoric acid import 47 and back extraction device solvent inlet 48, and back extraction device mulser A outlet 43 is connected with back extraction device mixed phase import 44; Back extraction device mixing tank A49 is provided with back extraction device mixing tank A continuous phase fluid inlet 51, back extraction device mixing tank A dispersed phase fluid inlet 52 and back extraction device mixing tank A mixed phase fluid outlet 53, back extraction device phase splitting device B50 is provided with back extraction device phase splitting device B mixed phase import 54, back extraction device phase splitting device B light phase export 55 and back extraction device phase-splitting groove B heavy out 56, and back extraction device mixing tank A mixed phase fluid outlet 53 is connected with back extraction device phase splitting device B mixed phase import 54; Back extraction device light phase export 46 is connected with back extraction device mixing tank A continuous phase fluid inlet 51, and back extraction device phase-splitting groove B heavy out 56 is connected with back extraction device phosphoric acid import 47.

During use: at extraction plant, the phosphoric acid that comes out from extraction plant phase splitting device B heavy out 17 all enters extraction plant mulser A1 by extraction plant mulser import 3 from extraction plant phosphoric acid import 8, extraction agent (from the no-load solvent of back extraction device phase splitting device B light phase export 55) from extraction plant solvent inlet 9 under the effect of pump, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant mulser A1, the mixed phase that forms comes out from extraction plant mulser A outlet 4, enters extraction plant phase splitting device A2 by extraction plant mixed phase import 5.In extraction plant phase splitting device A2, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity in the phosphoric acid enters heavy phase becomes raffinate from 6 discharges of extraction plant heavy out, phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant light phase export 7, enters extraction plant mixing tank A10 through extraction plant mixing tank A continuous phase fluid inlet 12 under the effect of pump; Feed phosphoric acid (fresh phosphoric) enters extraction plant mixing tank A10 through extraction plant mixing tank A dispersed phase fluid inlet 13, efficient mass transfer effect by extraction plant mixing tank A10, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant mixing tank A mixed phase fluid outlet 14, enter extraction plant phase splitting device B11 by extraction plant phase splitting device B mixed phase import 15, in extraction plant phase splitting device B11, realize the layering of mixed phase, what form is light, heavy two-phase, most of phosphoric acid is extracted the agent extraction and enters and gently form loaded solvent mutually and enter washing device from extraction plant phase splitting device B light phase export 16, heavy phase is then returned extraction plant mulser A1 by extraction plant phase splitting device B heavy out 17, thereby realizes extracting and separating.

At washing device, the load of coming out from extraction plant final stage light phase export dissolves into into the light phase import 37 of washing tower, and washing acid adds from washing tower washing acid import 36, and washing acid contacts with loaded solvent anti-phase in tower, fully mass transfer.In the loaded solvent with small amount of impurities enter heavy phase and sink to down the clarifying chamber, the spent acid of washing that has impurity leave standstill phase-splitting in clarifying chamber down after is washed spent acid outlet 39 and is discharged outside the towers from washing tower.Be washed the loaded solvent that has purified and rise to the clarifying chamber, enter back extraction device from washing tower light phase export 38 at last.

At back extraction device, the phosphoric acid that comes out from back extraction device phase-splitting groove B heavy out 56 under the effect of pump from back extraction device phosphoric acid import 47, all enter back extraction device mulser A40 from back extraction device solvent inlet 48 by back extraction device mulser A import 42 from the loaded solvent of washing device washing tower light phase export 38, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mulser A40, the mixed phase that forms comes out from back extraction device mulser A outlet 43, enters back extraction device phase splitting device A41 by back extraction device mixed phase import 44; In back extraction device phase splitting device A41, realize the layering of mixed phase, light, the heavy two-phase of formation; Phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 45 discharges of back extraction device heavy out, the loaded solvent that also contains part phosphoric acid comes out from back extraction device light phase export 46, enters back extraction device mixing tank A49 through back extraction device mixing tank A continuous phase fluid inlet 51 under the effect of pump; De-salted water enters back extraction device mixing tank A49 through back extraction device mixing tank A dispersed phase fluid inlet 52, efficient mass transfer effect by back extraction device mixing tank A49, further improve the back extraction effect, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 53, enter back extraction device phase splitting device B50 by back extraction device phase splitting device B mixed phase import 54, in back extraction device phase splitting device B50, realize the layering of mixed phase, what form is light, heavy two-phase, heavy phase is then returned back extraction device mulser A40 by back extraction device phase splitting device B heavy out 56, loaded solvent is desalted and becomes no-load solvent after the water back extraction and enter extraction plant solvent inlet 9 from back extraction device phase splitting device B light phase export 55, realizes the recycle of extraction agent.

Embodiment 2

Referring to Fig. 2, adopt three grades of extractions, the phosphoric acid purification device of one-level washing and three grades of back extractions, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises extraction plant mulser B18 and extraction plant phase splitting device C19, extraction plant mulser B18 is provided with extraction plant mulser B import 20 and extraction plant mulser B outlet 21, extraction plant phase splitting device C19 is provided with extraction plant phase splitting device C mixed phase import 22, extraction plant phase splitting device C heavy out 23 and extraction plant phase splitting device C light phase export 24, three grades of phosphoric acid imports 25 of extraction plant mulser B import 20 and extraction plant are connected with three grades of solvent inlets 26 of extraction plant, and extraction plant mulser B outlet 21 is connected with extraction plant phase splitting device C mixed phase import 22; Three grades of solvent inlets 26 of extraction plant phase splitting device B light phase export 16 and extraction plant are connected, extraction plant phase splitting device C heavy out 23 is connected with extraction plant mixing tank A dispersed phase fluid inlet 13, and extraction plant phase splitting device C light phase export 24 connects with the light admission port mutually 37 of washing tower;

Back extraction device comprises back extraction device mulser B57 and back extraction device phase splitting device C58, back extraction device mulser B57 is provided with back extraction device mulser B import 59, back extraction device mulser B outlet 60, back extraction device phase splitting device C58 is provided with back extraction device phase splitting device C mixed phase import 61, back extraction device phase splitting device C heavy out 62 and back extraction device phase splitting device C light phase export 63, three grades of phosphoric acid imports 64 of back extraction device mulser B import 59 and back extraction device are connected with three grades of solvent inlets 65 of back extraction device, and back extraction device mulser B outlet 60 is connected with back extraction device phase splitting device C mixed phase import 61; Three grades of solvent inlets 65 of back extraction device phase splitting device B light phase export 55 and back extraction device are connected, back extraction device phase splitting device C heavy out 62 is connected with back extraction device mixing tank A dispersed phase fluid inlet 52, and back extraction device phase splitting device C light phase export 63 is connected with extraction plant solvent inlet 9.

All the other are with embodiment 1.

During use, principle of work is with embodiment 1.

Embodiment 3

Referring to Fig. 3, adopt three grades of extractions, the phosphoric acid purification device of one-level washing and three grades of back extractions, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises extraction plant mixing tank B27 and extraction plant phase splitting device D28, extraction plant mixing tank B27 is provided with extraction plant mixing tank B continuous phase fluid inlet 29, extraction plant mixing tank B dispersed phase fluid inlet 30 and extraction plant mixing tank B mixed phase fluid outlet 31, extraction plant phase splitting device D28 is provided with extraction plant phase splitting device D mixed phase import 32, extraction plant phase splitting device D light phase export 33 and extraction plant phase splitting device D heavy out 34, extraction plant mixing tank B mixed phase fluid outlet 31 are connected with extraction plant phase splitting device D mixed phase import 32; Extraction plant phase splitting device B light phase export 16 is connected with extraction plant mixing tank B continuous phase fluid inlet 29, extraction plant phase splitting device D heavy out 34 is connected with extraction plant mixing tank A dispersed phase fluid inlet 13, and extraction plant phase splitting device D light phase export 33 connects with the light admission port mutually 37 of washing tower;

Back extraction device comprises back extraction device mixing tank B66 and back extraction device phase splitting device D67, back extraction device mixing tank B66 is provided with back extraction device mixing tank B continuous phase fluid inlet 68, back extraction device mixing tank B dispersed phase fluid inlet 69 and back extraction device mixing tank B mixed phase fluid outlet 70, back extraction device phase splitting device D67 is provided with back extraction device phase splitting device D mixed phase import 71, back extraction device phase splitting device D light phase export 72 and back extraction device phase splitting device D heavy out 73, back extraction device mixing tank B mixed phase fluid outlet 70 are connected with back extraction device phase splitting device D mixed phase import 71; Back extraction device phase splitting device B light phase export 55 is connected with back extraction device mixing tank B continuous phase fluid inlet 68, back extraction device phase splitting device D heavy out 73 is connected with back extraction device mixing tank A dispersed phase fluid inlet 52, and back extraction device phase splitting device D light phase export 72 is connected with extraction plant solvent inlet 9.

All the other are with embodiment 1.

During use, principle of work is with embodiment 1.

More than among three embodiment: mulser adopts the pipeline high-shearing dispersion emulsifying machine; Phase splitting device adopts phase-splitting groove, clarifying tank etc. to reach the equipment of phase-splitting purpose; Mixing tank adopts Chinese patent publication number CN1807277A, open day: on 02 22nd, 2006, disclosed " a kind of multi-channeled micro-structured reactor ".Pulse-column adopts air as pulse power.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims

1. phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant phase splitting device B light phase export (16) connects with the light admission port mutually of washing tower (37), washing device washing tower light phase export (38) is connected with back extraction device solvent inlet (48), and back extraction device secondary light phase export (55) is connected with extraction plant solvent inlet (9);

Extraction plant comprises extraction plant mulser A (1) and extraction plant phase splitting device A (2), extraction plant mixing tank A (10) and extraction plant phase splitting device B (11), extraction plant mulser A (1) is provided with extraction plant mulser A import (3), extraction plant mulser A exports (4), collection device phase splitting device A (2) is provided with extraction plant mixed phase import (5), extraction plant heavy out (6) and extraction plant light phase export (7), extraction plant mulser import (3) is connected with extraction plant solvent inlet (9) with extraction plant phosphoric acid import (8), and extraction plant mulser A outlet (4) is connected with extraction plant phase splitting device A mixed phase import (5); Extraction plant mixing tank A (10) is provided with extraction plant mixing tank A continuous phase fluid inlet (12), extraction plant mixing tank A dispersed phase fluid inlet (13) and extraction plant mixing tank A mixed phase fluid outlet (14), extraction plant phase splitting device B (11) is provided with extraction plant phase splitting device B mixed phase import (15), extraction plant phase splitting device B light phase export (16) and extraction plant phase splitting device B heavy out (17), and extraction plant mixing tank A continuous phase fluid outlet (14) is connected with extraction plant phase splitting device B mixed phase import (15); Extraction plant phase splitting device A light phase export (7) is connected with extraction plant mixing tank A continuous phase fluid inlet (12), and extraction plant phase splitting device B heavy out (17) is connected with extraction plant phosphoric acid import (8);

Washing device comprises washing tower (35), and washing tower (35) is provided with the light phase import of washing tower (37) washing acid import (36), and washing tower light phase export (38), washing tower are washed spent acid outlet (39);

Back extraction device comprises back extraction device mulser A (40) and back extraction device phase splitting device A (41), back extraction device mixing tank A (49) and back extraction device phase splitting device B (50), back extraction device mulser A (40) is provided with back extraction device mulser A import (42), back extraction device mulser A exports (43), collection device phase splitting device A (41) is provided with back extraction device mixed phase import (44), back extraction device heavy out (45) and back extraction device light phase export (46), back extraction device mulser A import (42) is connected with back extraction device phosphoric acid import (47) and back extraction device solvent inlet (48), and back extraction device mulser A outlet (43) is connected with back extraction device mixed phase import (44); Back extraction device mixing tank A (49) is provided with back extraction device mixing tank A continuous phase fluid inlet (51), back extraction device mixing tank A dispersed phase fluid inlet (52) and back extraction device mixing tank A mixed phase fluid outlet (53), back extraction device phase splitting device B (50) is provided with back extraction device phase splitting device B mixed phase import (54), back extraction device phase splitting device B light phase export (55) and back extraction device phase-splitting groove B heavy out (56), and back extraction device mixing tank A mixed phase fluid outlet (53) is connected with back extraction device phase splitting device B mixed phase import (54); Back extraction device light phase export (46) is connected with back extraction device mixing tank A continuous phase fluid inlet (51), and back extraction device phase-splitting groove B heavy out (56) is connected with back extraction device phosphoric acid import (47).

2. phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises extraction plant mulser B (18) and extraction plant phase splitting device C (19), extraction plant mulser B (18) is provided with extraction plant mulser B import (20) and extraction plant mulser B outlet (21), extraction plant phase splitting device C (19) is provided with extraction plant phase splitting device C mixed phase import (22), extraction plant phase splitting device C heavy out (23) and extraction plant phase splitting device C light phase export (24), extraction plant mulser B import (20) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of extraction plant (25) and extraction plant (26), and extraction plant mulser B outlet (21) is connected with extraction plant phase splitting device C mixed phase import (22); Extraction plant phase splitting device B light phase export (16) is connected with three grades of solvent inlets of extraction plant (26), extraction plant phase splitting device C heavy out (23) is connected with extraction plant mixing tank A dispersed phase fluid inlet (13), and extraction plant phase splitting device C light phase export (24) connects with the light admission port mutually of washing tower (37);

Back extraction device comprises back extraction device mulser B (57) and back extraction device phase splitting device C (58), back extraction device mulser B (57) is provided with back extraction device mulser B import (59), back extraction device mulser B exports (60), back extraction device phase splitting device C (58) is provided with back extraction device phase splitting device C mixed phase import (61), back extraction device phase splitting device C heavy out (62) and back extraction device phase splitting device C light phase export (63), back extraction device mulser B import (59) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of back extraction device (64) and back extraction device (65), and back extraction device mulser B outlet (60) is connected with back extraction device phase splitting device C mixed phase import (61); Back extraction device phase splitting device B light phase export (55) is connected with three grades of solvent inlets of back extraction device (65), back extraction device phase splitting device C heavy out (62) is connected with back extraction device mixing tank A dispersed phase fluid inlet (52), and back extraction device phase splitting device C light phase export (63) is connected with extraction plant solvent inlet (9).

3. phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises extraction plant mixing tank B (27) and extraction plant phase splitting device D (28), extraction plant mixing tank B (27) is provided with extraction plant mixing tank B continuous phase fluid inlet (29), extraction plant mixing tank B dispersed phase fluid inlet (30) and extraction plant mixing tank B mixed phase fluid outlet (31), extraction plant phase splitting device D (28) is provided with extraction plant phase splitting device D mixed phase import (32), extraction plant phase splitting device D light phase export (33) and extraction plant phase splitting device D heavy out (34), extraction plant mixing tank B mixed phase fluid outlet (31) is connected with extraction plant phase splitting device D mixed phase import (32); Extraction plant phase splitting device B light phase export (16) is connected with extraction plant mixing tank B continuous phase fluid inlet (29), extraction plant phase splitting device D heavy out (34) is connected with extraction plant mixing tank A dispersed phase fluid inlet (13), and extraction plant phase splitting device D light phase export (33) connects with the light admission port mutually of washing tower (37);

Back extraction device comprises back extraction device mixing tank B (66) and back extraction device phase splitting device D (67), back extraction device mixing tank B (66) is provided with back extraction device mixing tank B continuous phase fluid inlet (68), back extraction device mixing tank B dispersed phase fluid inlet (69) and back extraction device mixing tank B mixed phase fluid outlet (70), back extraction device phase splitting device D (67) is provided with back extraction device phase splitting device D mixed phase import (71), back extraction device phase splitting device D light phase export (72) and back extraction device phase splitting device D heavy out (73), back extraction device mixing tank B mixed phase fluid outlet (70) is connected with back extraction device phase splitting device D mixed phase import (71); Back extraction device phase splitting device B light phase export (55) is connected with back extraction device mixing tank B continuous phase fluid inlet (68), back extraction device phase splitting device D heavy out (73) is connected with back extraction device mixing tank A dispersed phase fluid inlet (52), and back extraction device phase splitting device D light phase export (72) is connected with extraction plant solvent inlet (9).

4. as the described phosphoric acid purification device of one of claim 1-3, wherein: phase splitting device is phase-splitting groove or clarifying tank.

5. phosphoric acid purification device as claimed in claim 4, wherein: mulser is the pipeline high-shearing dispersion emulsifying machine.