CN201433100Y

CN201433100Y - Phosphoric acid purification device

Info

Publication number: CN201433100Y
Application number: CN2009201255125U
Authority: CN
Inventors: 王邵东; 冉端泉; 吕阳成; 吴邦文
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2009-07-06
Filing date: 2009-07-06
Publication date: 2010-03-31
Anticipated expiration: 2019-07-06

Abstract

The utility model discloses a phosphoric acid purification device which comprises an extraction device, a washing device and a stripping device, wherein the extraction device and the stripping deviceadopt the combination of two stages of emulsification machines and phase splitting devices, or adopt one more combination of one group of emulsification machine and phase splitting device beside the exist combination; the washing device adopts the combination of a group of mixer and phase splitting device and a group of emulsification machine and phase splitting device, or adopts one more group orgroups of mixers and phase splitting devices (or emulsification machines and phase splitting devices) beside the exist combination. A primary solvent inlet of the extraction device is connected witha light phase outlet of the final stage phase spitting device of the stripping device, a continuous phase fluid inlet of the washing device is connected with the final stage light phase outlet of theextraction device, a primary solvent inlet of the stripping device is connected with the final stage light phase outlet of the washing device. The phosphoric acid purification device can enhance the mass transfer performance, improves the purification efficiency, reduces the equipment investment and operation 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

Realize that with solvent extraction technology phosphoric acid purification is a phosphoric acid purification technology commonly used at present, solvent extraction technology generally comprises extraction, washing, reaches the back extraction operation.The chemical industry equipment that can realize extraction, washing, back extraction function at present is mainly as follows: multistage mixing-clarifying tank, it is a kind of typically contact liquid liquid mass transfer apparatus step by step, wherein every grade comprises mulser and clarifying tank two portions, this equipment main drawback has: horizontal multistage mixing-tempering tank floor space is bigger, be equipped with whipping appts in each level, fluid generally needs to use pump delivery flowing of inter-stage, and cost of equipment and process cost are all bigger; Sieve-tray tower, the weight two-phase is made counter-current flow in tower, and two-phase is the cross-flow contact on every block of column plate, and this tower mass-transfer efficiency is than higher, but its internal structure is complicated, and manufacturing cost is higher, the internal cleaning difficulty; Packing tower, the packing tower structure is simple relatively, but efficient is lower, can not be used to have the material of solid particulate and easy fouling; Pulsed packed tower and pulsed sieve plate column, in order to improve the two-phase contact condition, the reinforcing mass transfer process, add mechanical energy causing pulsation at packing tower and sieve-tray tower, and the generation of pulsation is realized by reciprocation pump or pressurized air usually, this kind equipment mass-transfer efficiency height, but manufacturing cost is higher, the internal cleaning difficulty, and working cost is higher; Sieve plate is fixed on the central shaft in the oscillating screen plate tower, oscillating screen plate tower, is driven by toggle, and this tower is limited by equipment material, and it is very difficult to maximize, and working cost is higher.

Mulser 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 CN1658807A, 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.

The rotor of mixing tank 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.Mixing tank 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.

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 facility investment and working cost and the little phosphoric acid purification device of floor space.

A kind of phosphoric acid purification device of the present utility model, comprise extraction plant, washing device and back extraction device, wherein: extraction plant secondary light phase export is connected with washing device mixing tank A continuous phase fluid inlet, washing device phase splitting device B light phase export is connected with back extraction device one-level solvent inlet, and back extraction device secondary light phase export is connected with extraction plant one-level solvent inlet;

Extraction plant comprises extraction plant one-level mulser and extraction plant one-level phase splitting device, extraction plant secondary mulser and extraction plant secondary phase splitting device, extraction plant one-level mulser is provided with mulser import of extraction plant one-level and the outlet of extraction plant one-level mulser, extraction plant one-level phase splitting device is provided with the import of extraction plant one-level mixed phase, extraction plant one-level heavy out and extraction plant one-level light phase export, the import of extraction plant one-level mulser is connected with phosphoric acid import of extraction plant one-level and extraction plant one-level solvent inlet, and the outlet of extraction plant one-level mulser is connected with the import of extraction plant one-level mixed phase; Extraction plant secondary mulser is provided with mulser import of extraction plant secondary and the outlet of extraction plant secondary mulser, extraction plant secondary phase splitting device is provided with the import of extraction plant secondary mixed phase, extraction plant secondary heavy out and extraction plant secondary light phase export, the import of extraction plant secondary mulser is connected with phosphoric acid import of extraction plant secondary and the import of extraction plant secondary solvent, and the outlet of extraction plant secondary mulser is connected with the import of extraction plant secondary mixed phase; Extraction plant one-level light phase export is connected with the import of extraction plant secondary solvent by pipeline, and extraction plant secondary heavy out is connected with the import of extraction plant one-level phosphoric acid by pipeline.

Washing device comprises washing device mixing tank A and washing device phase splitting device A, washing device mulser A and washing device phase splitting device B, washing device mixing tank A is provided with washing device mixing tank A continuous phase fluid inlet, washing device mixing tank A dispersed phase fluid inlet and the outlet of washing device mixing tank A mixed phase fluid, washing device phase splitting device A is provided with the import of washing device phase splitting device A mixed phase, washing device phase splitting device A heavy out and washing device phase splitting device A light phase export, washing device mulser A is provided with A import of washing device mulser and washing device mulser A outlet, and washing device phase splitting device B is provided with the import of washing device phase splitting device B mixed phase, washing device phase splitting device B heavy out and washing device phase splitting device B light phase export.Washing device mulser A import is connected with import of washing device phosphoric acid and washing device solvent inlet, washing device phase splitting device A light phase export is connected with the washing device solvent inlet, and washing device mulser A outlet is connected with the import of washing device phase splitting device B mixed phase; Washing device phase splitting device B heavy out is connected with washing device mixing tank A dispersed phase fluid inlet by pipeline; Washing device phase splitting device B light phase export is connected with back extraction device one-level solvent inlet.

Back extraction device comprises back extraction device one-level mulser and back extraction device one-level phase splitting device, collection device secondary mulser and back extraction device secondary phase splitting device, back extraction device one-level mulser is provided with mulser import of back extraction device one-level and the outlet of back extraction device one-level mulser, back extraction device one-level phase splitting device (is provided with the import of back extraction device one-level mixed phase, back extraction device one-level heavy out and back extraction device one-level light phase export, the import of back extraction device one-level mulser is connected with reverse-extraction agent import of back extraction device one-level and back extraction device one-level solvent inlet, and the outlet of back extraction device one-level mulser is connected with the import of back extraction device one-level mixed phase.Back extraction device secondary mulser is provided with mulser import of back extraction device secondary and the outlet of back extraction device secondary mulser, back extraction device secondary phase splitting device is provided with the import of back extraction device secondary mixed phase, back extraction device secondary heavy out and back extraction device secondary light phase export, (reach the import of back extraction device secondary solvent and be connected, the outlet of back extraction device secondary mulser (is connected with the import of back extraction device secondary mixed phase the import of back extraction device secondary mulser with the import of back extraction device secondary reverse-extraction agent; Back extraction device one-level light phase export is connected with the import of back extraction device secondary solvent by pipeline, and back extraction device secondary heavy out is connected with the import of back extraction device one-level reverse-extraction agent by pipeline.

Above-mentioned phosphoric acid purification device, wherein: extraction plant comprises three grades of mulsers of extraction plant and three grades of phase-splitting equipment of extraction plant, three grades of mulsers of extraction plant are provided with three grades of mulser imports of extraction plant and three grades of mulser outlets of extraction plant, three grades of phase-splitting equipment of extraction plant are provided with three grades of mixed phase imports of extraction plant, three grades of heavy outs of extraction plant and three grades of light phase exports of extraction plant, three grades of phosphoric acid imports of three grades of mulser imports of extraction plant and extraction plant and three grades of solvent inlets of extraction plant are connected, and three grades of mulser outlets of extraction plant are connected with three grades of mixed phase imports of extraction plant; Three grades of solvent inlets of extraction plant secondary light phase export and extraction plant are connected, three grades of heavy outs of extraction plant, be connected with the import of extraction plant secondary phosphoric acid by pipeline, three grades of phase-splitting equipment of extraction plant light phase export is connected with washing device mixed phase fluid inlet;

Washing device comprises that washing device mixing tank B and washing device phase splitting device C, washing device mixing tank B are provided with washing device mixing tank B continuous phase fluid inlet, washing device mixing tank B dispersed phase fluid inlet and the outlet of washing device mixing tank B mixed phase fluid, and washing device phase splitting device C is provided with the import of washing device phase splitting device C mixed phase, washing device phase splitting device C heavy out and washing device phase splitting device C light phase export.Washing device phase splitting device A light phase export is connected with the washing device solvent inlet, and washing device mulser A outlet is connected with the import of washing device phase splitting device B mixed phase; Washing device phase splitting device B heavy out is connected with washing device mixing tank A dispersed phase fluid inlet by pipeline; Washing device phase splitting device B light phase export is connected with washing device mixing tank B continuous phase fluid inlet; Washing device phase splitting device C heavy out is connected with the import of washing device phosphoric acid; Washing device phase splitting device C light phase export is connected with the import of back extraction device one-level quantity of solvent.

Back extraction device comprises three grades of mulsers of back extraction device and three grades of phase-splitting equipment of back extraction device, three grades of mulsers of back extraction device are provided with three grades of mulser imports of back extraction device and three grades of mulser outlets of back extraction device, three grades of phase-splitting equipment of back extraction device are provided with three grades of mixed phase imports of back extraction device, three grades of heavy outs of back extraction device and three grades of light phase exports of back extraction device, three grades of reverse-extraction agent imports of three grades of mulser imports of back extraction device and back extraction device and three grades of solvent inlets of back extraction device are connected, and three grades of mulser outlets of back extraction device are connected with three grades of mixed phase imports of back extraction device; Three grades of solvent inlets of back extraction device secondary light phase export and back extraction device are connected, and three grades of heavy outs of back extraction device are connected with the import of back extraction device secondary reverse-extraction agent, and three grades of phase-splittings of back extraction device are established light phase export and are connected with extraction plant one-level solvent inlet.

Washing device comprises washing device mulser B and washing device phase splitting device D, washing device mulser B is provided with B import of washing device mulser and washing device mulser B outlet, and washing device phase splitting device D is provided with the import of washing device phase splitting device B mixed phase, washing device phase splitting device B heavy out and washing device phase splitting device B light phase export.Three grades of phosphoric acid imports of washing device mulser B import and washing device and three grades of solvent inlets of washing device are connected, and washing device mulser B outlet is connected with the import of washing device phase splitting device B mixed phase.Washing device phase splitting device A light phase export is connected with the washing device solvent inlet, and washing device mulser A outlet is connected with the import of washing device phase splitting device B mixed phase; Washing device phase splitting device B heavy out is connected with washing device mixing tank A dispersed phase fluid inlet by pipeline; Three grades of solvent inlets of washing device phase splitting device B light phase export and washing device are connected, and washing device phase splitting device B heavy out is connected with the import of washing device phosphoric acid; Washing device phase splitting device B light phase export is connected with the import of back extraction device one-level quantity of solvent.

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

Above-mentioned phosphoric acid purification device, wherein: mixing tank is a pipeline high-shear dispersion mixer.

The utility model compared with prior art, as can be known from the above technical solutions, require difference according to purifying, constitute extraction plant, washing device and the back extraction device of phosphoric acid purification device, wherein: extraction plant and back extraction device are selected the combination of two-stage group mulser and phase splitting device for use or increase by one group on aforesaid combination and combined by many groups mulser and phase splitting device; Washing device is selected the combination of one group of mixing tank and phase splitting device and one group of mulser and phase splitting device for use, or increases one or more groups mixing tank and phase splitting device (or mulser and phase splitting device) combines on aforesaid combination.In the phosphoric acid purification process, feed phosphoric acid (fresh phosphoric), de-salted water add by the import of final stage extraction plant mulser phosphoric acid, the import of final stage back extraction device mulser reverse-extraction agent; Washing acid (purifying phosphoric acid), dispersed phase fluid inlet, phosphoric acid import adding by final stage washing device mixing tank, mulser.The no-load solvent of extraction plant one-level solvent inlet is from back extraction device final stage light phase export, the loaded solvent of washing device continuous phase fluid inlet is from extraction plant final stage light phase export, and the loaded solvent of back extraction device one-level solvent inlet is from washing device final stage light phase export.Because mixing tank, mulser mass transfer area are big, the mass-transfer efficiency height.The mixed solution that comes out from mixing tank, mulser 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; Mixing tank, mulser floor space are little, and appliance arrangement is arranged simple, and factory building can be realized miniaturization; Mixing tank, mulser 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, 2, extraction plant one-level phase splitting device, 3, the import of extraction plant one-level mulser, 4, the outlet of extraction plant one-level mulser, 5, the import of extraction plant one-level mixed phase, 6, extraction plant one-level heavy out, 7, extraction plant one-level light phase export, 8, the import of extraction plant one-level phosphoric acid, 9, extraction plant one-level solvent inlet, 10, extraction plant secondary mulser, 11, extraction plant secondary phase splitting device, 12, the import of extraction plant secondary mulser, 13, the outlet of extraction plant secondary mulser, 14, the import of extraction plant secondary mixed phase, 15, extraction plant secondary heavy out, 16, extraction plant secondary light phase export, 17, the import of extraction plant secondary phosphoric acid, 18, the import of extraction plant secondary solvent, 19, three grades of mulsers of extraction plant, 20, three grades of phase-splitting equipment of extraction plant, 21, three grades of mulser imports of extraction plant, 22, three grades of mulser outlets of extraction plant, 23, three grades of mixed phase imports of extraction plant, 24, three grades of heavy outs of extraction plant, 25, three grades of light phase exports of extraction plant, 26, three grades of phosphoric acid imports of extraction plant, 27, three grades of solvent inlets of extraction plant, 28, washing device mixing tank A, 29, washing device phase splitting device A, 30, washing device mixing tank A continuous phase fluid inlet, 31, washing device mixing tank A dispersed phase fluid inlet, 32, the outlet of washing device mixing tank A mixed phase fluid, 33, the import of washing device phase splitting device A mixed phase, 34, washing device phase splitting device A light phase export, 35, washing device phase splitting device A heavy out, 36, washing device mulser A, 37, washing device phase splitting device B, 38, washing device mulser A import, 39, washing device mulser A outlet, 40, the import of washing device phase splitting device B mixed phase, 41, washing device phase splitting device B heavy out, 42, washing device phase splitting device B light phase export, 43, the import of washing device phosphoric acid, 44, the washing device solvent inlet, 45, washing device mixing tank B, 46, washing device phase splitting device C, 47, washing device mixing tank B continuous phase fluid inlet, 48, washing device mixing tank B dispersed phase fluid inlet, 49, the outlet of washing device mixing tank B mixed phase fluid, 50, the import of washing device phase splitting device C mixed phase, 51, washing device phase splitting device C light phase export, 52, washing device phase splitting device C heavy out, 53, washing device mulser B, 54, washing device phase splitting device D, 55, washing device mulser B import, 56, washing device mulser B outlet, 57, the import of washing device phase splitting device D mixed phase, 58, washing device phase splitting device D heavy out, 59, washing device phase splitting device D light phase export, 60, three grades of phosphoric acid imports of washing device, 61, three grades of solvent inlets of washing device, 62, back extraction device one-level mulser, 63, back extraction device one-level phase splitting device, 64, the import of back extraction device one-level mulser, 65, the outlet of back extraction device one-level mulser, 66, the import of back extraction device one-level mixed phase, 67, back extraction device one-level heavy out, 68, back extraction device one-level light phase export, 69, the import of back extraction device one-level reverse-extraction agent, 70, back extraction device one-level solvent inlet, 71, back extraction device secondary mulser, 72, back extraction device secondary phase splitting device, 73, the import of back extraction device secondary mulser, 74, the outlet of back extraction device secondary mulser, 75, the import of back extraction device secondary mixed phase, 76, back extraction device secondary heavy out, 77, back extraction device secondary light phase export, 78, the import of back extraction device secondary reverse-extraction agent, 79, the import of back extraction device secondary solvent, 80, three grades of mulsers of back extraction device, 81, three grades of phase-splitting equipment of back extraction device, 82, three grades of mulser imports of back extraction device, 83, three grades of mulser outlets of back extraction device, 84, three grades of mixed phase imports of back extraction device, 85, three grades of heavy outs of back extraction device, 86, three grades of light phase exports of back extraction device, 87, three grades of reverse-extraction agent imports of back extraction device, 88, three grades of solvent inlets of back extraction device.

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, adopt the phosphoric acid purification device of two-stage extraction, washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant secondary light phase export 16 is connected with washing device mixing tank A continuous phase fluid inlet 30, washing device phase splitting device B light phase export 42 is connected with back extraction device one-level solvent inlet 70, and back extraction device secondary light phase export 77 is connected with extraction plant one-level solvent inlet 9;

Extraction plant comprises extraction plant one-level mulser 1 and extraction plant one-level phase splitting device 2, extraction plant secondary mulser 10 and extraction plant secondary phase splitting device 11, extraction plant one-level mulser 1 is provided with extraction plant one-level mulser import 3 and extraction plant one-level mulser outlet 4, extraction plant one-level phase splitting device 2 is provided with extraction plant one-level mixed phase import 5, extraction plant one-level heavy out 6 and extraction plant one-level light phase export 7, extraction plant one-level mulser import 3 is connected with extraction plant one-level phosphoric acid import 8 and extraction plant one-level solvent inlet 9, and extraction plant one-level mulser outlet 4 is connected with extraction plant one-level mixed phase import 5; Extraction plant secondary mulser 10 is provided with extraction plant secondary mulser import 12 and extraction plant secondary mulser outlet 13, extraction plant secondary phase splitting device 11 is provided with extraction plant secondary mixed phase import 14, extraction plant secondary heavy out 15 and extraction plant secondary light phase export 16, extraction plant secondary mulser import 12 is connected with extraction plant secondary phosphoric acid import 17 and extraction plant secondary solvent import 18, and extraction plant secondary mulser outlet 13 is connected with extraction plant secondary mixed phase import 14; Extraction plant one-level light phase export 7 is connected with extraction plant secondary solvent import 18 by pipeline, and extraction plant secondary heavy out 15 is connected with extraction plant one-level phosphoric acid import 8 by pipeline.

Washing device comprises washing device mixing tank A28 and washing device phase splitting device A29, washing device mulser A36 and washing device phase splitting device B37, washing device mixing tank A28 is provided with washing device mixing tank A continuous phase fluid inlet 30, washing device mixing tank A dispersed phase fluid inlet 31 and washing device mixing tank A mixed phase fluid outlet 32, washing device phase splitting device A29 is provided with washing device phase splitting device A mixed phase import 33, washing device phase splitting device A heavy out 35 and washing device phase splitting device A light phase export 34, washing device mulser A36 is provided with washing device mulser A import 38 and washing device mulser A outlet 39, and washing device phase splitting device B37 is provided with washing device phase splitting device B mixed phase import 40, washing device phase splitting device B heavy out 41 and washing device phase splitting device B light phase export 42.Washing device mulser A import 38 is connected with washing device phosphoric acid import 43 and washing device solvent inlet 44, washing device phase splitting device A light phase export 34 is connected with washing device solvent inlet 44, and washing device mulser A outlet 39 is connected with washing device phase splitting device B mixed phase import 40; Washing device phase splitting device B heavy out 41 is connected with washing device mixing tank A dispersed phase fluid inlet 31 by pipeline.

Back extraction device comprises back extraction device one-level mulser 62 and back extraction device one-level phase splitting device 63, back extraction device secondary mulser 71 and back extraction device secondary phase splitting device 72.Back extraction device one-level mulser 62 is provided with back extraction device one-level mulser import 64 and back extraction device one-level mulser outlet 65, back extraction device one-level phase splitting device 63 is provided with back extraction device one-level mixed phase import 66, back extraction device one-level heavy out 67 and back extraction device one-level light phase export 68, back extraction device one-level mulser import 64 is connected with back extraction device one-level reverse-extraction agent import 69 and back extraction device one-level solvent inlet 70, and back extraction device one-level mulser outlet 65 is connected with back extraction device one-level mixed phase import 66.Back extraction device secondary mulser 71 is provided with back extraction device secondary mulser import 73 and back extraction device secondary mulser outlet 74, back extraction device secondary phase splitting device 72 is provided with back extraction device secondary mixed phase import 75, back extraction device secondary heavy out 76 and back extraction device secondary light phase export 77, back extraction device secondary mulser import 73 is connected with back extraction device secondary reverse-extraction agent import 78 and back extraction device secondary solvent import 79, and back extraction device secondary mulser outlet 74 is connected with back extraction device secondary mixed phase import 75; Back extraction device one-level light phase export 68 is connected with back extraction device secondary solvent import 79 by pipeline, and back extraction device secondary heavy out 76 is connected with back extraction device one-level reverse-extraction agent import 69 by pipeline.

During use: at extraction plant, the phosphoric acid that extraction plant secondary heavy out 15 comes out, under the effect of pump from extraction plant one-level phosphoric acid import 8, extraction agent (from the no-load solvent of back extraction device secondary light phase export 77) enters extraction plant one-level mulser 1 from extraction plant one-level solvent inlet 9 by extraction plant one-level mulser import 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant one-level mulser 1, the mixed phase that forms comes out from extraction plant one-level mulser outlet 4, enters extraction plant one-level phase splitting device 2 by extraction plant one-level mixed phase import 5; In extraction plant one-level phase splitting device 2, 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 one-level heavy out; Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant one-level light phase export 7, enters extraction plant secondary mulser 10 through extraction plant secondary solvent import 18 by extraction plant secondary mulser import 12 under the effect of pump; Feed phosphoric acid (fresh phosphoric) enters extraction plant secondary mulser 10 through extraction plant secondary phosphoric acid import 17 by extraction plant secondary mulser import 12, efficient mass transfer effect by extraction plant secondary mulser 10, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant secondary mulser outlet 13, enter extraction plant secondary phase splitting device 11 by extraction plant secondary mixed phase import 14, in extraction plant secondary phase splitting device 11, 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 secondary light phase export 16, heavy phase is then returned extraction plant one-level mulser 1 by extraction plant secondary heavy out 15, thereby realizes extracting and separating.

At washing device, the phosphoric acid that comes out from washing device phase splitting device B heavy out 41 under the effect of pump from washing device mixing tank A dispersed phase fluid inlet 31, enter washing device mixing tank A28 from washing device mixing tank A continuous phase fluid inlet 30 from the loaded solvent of extraction plant, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank A28, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 32, enters washing device phase splitting device A29 by washing device phase splitting device A mixed phase import 33.In washing device phase splitting device A29, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 35, the loaded solvent of eccysis partial impurities comes out from washing device phase splitting device B light phase export 34, enters washing device mulser A36 through washing device solvent inlet 44 under the effect of pump; Washing acid (purifying phosphoric acid) enters washing device mulser A36 through washing device phosphoric acid import 43, efficient mass transfer effect by washing device mulser A36, further improve washing effect, the mixed phase that forms comes out from washing device mulser A outlet 39, enter washing device phase splitting device B37 by washing device phase splitting device B mixed phase import 40, in washing device phase splitting device B37, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent that has been purified by phosphoric acid washing enters back extraction device one-level solvent inlet 70 from washing device phase splitting device B light phase export 42, heavy phase is then returned washing device mixing tank A28 by washing device phase splitting device B heavy out 41, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that back extraction device secondary heavy out 76 comes out, under the effect of pump, enter back extraction device one-level mulser 62 from back extraction device one-level solvent inlet 70 by back extraction device one-level mulser import 64 from back extraction device one-level reverse-extraction agent import 69, the loaded solvent that comes from washing device, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device one-level mulser 62, the mixed phase that forms comes out from back extraction device one-level mulser outlet 65, enters back extraction device one-level phase splitting device 63 by back extraction device one-level mixed phase import 66.In back extraction device one-level phase splitting device 63, 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 67 discharges of back extraction device one-level heavy out, the loaded solvent of being taken off part phosphoric acid comes out from back extraction device one-level light phase export 68, enters back extraction device secondary mulser 71 through back extraction device secondary solvent import 79 under the effect of pump.De-salted water enters back extraction device secondary mulser 71 through back extraction device secondary reverse-extraction agent import 78, efficient mass transfer effect by back extraction device secondary mulser 71, further improve the molten back extraction effect of load, the mixed phase that forms comes out from back extraction device secondary mulser outlet 74, enter back extraction device secondary phase splitting device 72 by back extraction device secondary mixed phase import 75, in back extraction device secondary phase splitting device 72, realize the layering of mixed phase, what form is light, heavy two-phase, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and return extraction plant from back extraction device secondary light phase export 77, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device one-level mulser 62 by back extraction device secondary heavy out 76.Realize the recycle of extraction agent.

Embodiment 2

Referring to Fig. 2, adopt three grades of extractions, the phosphoric acid purification device of washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises three grades of mulsers 19 of extraction plant and three grades of phase-splitting equipment 20 of extraction plant, three grades of mulsers 19 of extraction plant are provided with three grades of mulser imports 21 of extraction plant and three grades of mulser outlets 22 of extraction plant, three grades of phase-splitting equipment 20 of extraction plant are provided with three grades of mixed phase imports 23 of extraction plant, three grades of heavy outs 24 of extraction plant and three grades of light phase exports 25 of extraction plant, three grades of phosphoric acid imports 26 of three grades of mulser imports 21 of extraction plant and extraction plant and three grades of solvent inlets 27 of extraction plant are connected, and three grades of mulsers of extraction plant outlet 22 is connected with three grades of mixed phase imports 23 of extraction plant; Three grades of solvent inlets 27 of extraction plant secondary light phase export 16 and extraction plant are connected, three grades of heavy outs 24 of extraction plant, be connected with extraction plant secondary phosphoric acid import 17 by pipeline, three grades of phase-splitting equipment of extraction plant light phase export 25 is connected with washing device mixed phase fluid inlet 30;

Washing device comprises that washing device mixing tank B45 and washing device phase splitting device C46, washing device mixing tank B45 are provided with washing device mixing tank B continuous phase fluid inlet 47, washing device mixing tank B dispersed phase fluid inlet 48 and washing device mixing tank B mixed phase fluid outlet 49, and washing device phase splitting device C46 is provided with washing device phase splitting device C mixed phase import 50, washing device phase splitting device C heavy out 52 and washing device phase splitting device C light phase export 51.Washing device phase splitting device B light phase export 42 is connected with washing device mixing tank B continuous phase fluid inlet 47; Washing device phase splitting device C heavy out 52 is connected with washing device phosphoric acid import 43; Washing device phase splitting device C light phase export 51 is connected with back extraction device one-level solvent inlet 70.

Back extraction device comprises three grades of mulsers 80 of back extraction device and three grades of phase-splitting equipment 81 of back extraction device, three grades of mulsers 80 of back extraction device are provided with three grades of mulser imports 82 of back extraction device and three grades of mulser outlets 83 of back extraction device, three grades of phase-splitting equipment 81 of back extraction device are provided with three grades of mixed phase imports 84 of back extraction device, three grades of heavy outs 85 of back extraction device and three grades of light phase exports 86 of back extraction device, three grades of reverse-extraction agent imports 87 of three grades of mulser imports 82 of back extraction device and back extraction device and three grades of solvent inlets 88 of back extraction device are connected, and three grades of mulsers of back extraction device outlet 83 is connected with three grades of mixed phase imports 84 of back extraction device; Three grades of solvent inlets 88 of back extraction device secondary light phase export 77 and back extraction device are connected, three grades of heavy outs 85 of back extraction device are connected with back extraction device secondary reverse-extraction agent import 78, and three grades of phase-splittings of back extraction device are established light phase export 86 and are connected with extraction plant one-level solvent inlet 9.All the other are with embodiment 1.

During use, at extraction plant, the phosphoric acid that three grades of heavy outs 24 of extraction plant come out returns extraction plant secondary mulser 10 under the effect of pump; Loaded solvent comes out from extraction plant secondary light phase export 16, under the effect of pump, enter three grades of mulsers 19 of extraction plant through three grades of phosphoric acid imports 26 of extraction plant by three grades of mulser imports 21 of extraction plant through three grades of solvent inlets 27 of extraction plant, feed phosphoric acid (fresh phosphoric), efficient mass transfer effect by multistage mulser has improved the phosphoric acid extraction rate as much as possible; The mixed phase that forms comes out from three grades of mulser outlets 22 of extraction plant, enter three grades of phase-splitting equipment 20 of extraction plant by three grades of mixed phase imports 23 of extraction plant, in three grades of phase-splitting equipment 20 of extraction plant, realize the layering of mixed phase, light, the heavy two-phase that forms, most of phosphoric acid is extracted the agent extraction and enters and gently form loaded solvent mutually and come out to enter washing device from three grades of light phase exports of extraction plant 25, heavy phase is then returned extraction plant secondary mulser 10 by three grades of heavy outs 24 of extraction plant, thereby realizes extracting and separating.

At washing device, loaded solvent comes out, enters the mouth 47 through washing device mixing tank B continuous phase fluid under the effect of pump from washing device phase splitting device B light phase export 42, and washing acid (purifying phosphoric acid) enters washing device mixing tank B45 through washing device mixing tank B dispersed phase fluid inlet 48; The mixed phase that forms comes out from washing device mixing tank B mixed phase fluid outlet 326, enter washing device phase splitting device C46 by washing device phase splitting device C mixed phase import 50, in washing device phase splitting device C46, realize the layering of mixed phase, light, the heavy two-phase that forms, washing, purifying loaded solvent come out to enter back extraction device from washing device phase splitting device C light phase export 51; Heavy phase is then returned washing device mulser A36 by washing device phase splitting device C heavy out 52, the loaded solvent that enters with washing device solvent inlet 44 is by the efficient mass transfer effect of washing device mulser A36, the mixed phase that forms comes out from washing device mulser A outlet 39, enter washing device phase splitting device B37 by washing device phase splitting device B mixed phase import 40, in washing device phase splitting device B37, realize the layering of mixed phase, what form is light, heavy two-phase, washing, purifying loaded solvent enter washing device mixing tank B45 from washing device phase splitting device B light phase export 42.Heavy phase is then returned washing device mixing tank A dispersed phase fluid inlet 31 by washing device phase splitting device B heavy out 41, loaded solvent from extraction plant enters washing device mixing tank A28 from washing device mixing tank A continuous phase fluid inlet 30, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank A28, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 32, enters washing device phase splitting device A29 by washing device phase splitting device A mixed phase import 33.In washing device phase splitting device A29, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 35.The loaded solvent of washing impurity off comes out from washing device phase splitting device A light phase export 34, enters washing device mulser A36 through washing device solvent inlet 44 under the effect of pump.

At back extraction device, the phosphoric acid that three grades of heavy outs 85 of back extraction device come out returns back extraction device secondary mulser 71 under the effect of pump; The loaded solvent that contains part phosphoric acid comes out from back extraction device secondary phase splitting device 72 light phase exports, under the effect of pump, enter three grades of mulsers 80 of back extraction device through three grades of reverse-extraction agent imports 87 of back extraction device through three grades of solvent inlets 88 of back extraction device, de-salted water, by the efficient mass transfer effect of multistage mulser, improved phosphoric acid back extraction effect as much as possible; The mixed phase that forms comes out from three grades of mulser outlets 83 of back extraction device, enter three grades of phase-splitting equipment 81 of back extraction device by three grades of mixed phase imports 84 of back extraction device, in three grades of phase-splitting equipment 81 of back extraction device, realize the layering of mixed phase, light, the heavy two-phase that forms, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and come out to return extraction plant from three grades of light phase exports of back extraction device 86, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device secondary mulser 71 by back extraction device heavy out 85.By three grades of back extractions, the phosphoric acid in the loaded solvent is desalted the water back extraction and enters heavy phase finally from 67 discharges of back extraction device one-level heavy out, becomes purifying phosphoric acid.All the other are with embodiment 1.

Embodiment 3

Referring to Fig. 3, adopt three grades of extractions, the phosphoric acid purification device of washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises three grades of mulsers 19 of extraction plant and three grades of phase-splitting equipment 20 of extraction plant, three grades of mulsers 19 of extraction plant are provided with three grades of mulser imports 21 of extraction plant and three grades of mulser outlets 22 of extraction plant, three grades of phase-splitting equipment 20 of extraction plant are provided with three grades of mixed phase imports 23 of extraction plant, three grades of heavy outs 24 of extraction plant and three grades of light phase exports 25 of extraction plant, three grades of phosphoric acid imports 26 of three grades of mulser imports 21 of extraction plant and extraction plant and three grades of solvent inlets 27 of extraction plant are connected, and three grades of mulsers of extraction plant outlet 22 is connected with three grades of mixed phase imports 23 of extraction plant; Three grades of solvent inlets 27 of extraction plant secondary light phase export 16 and extraction plant are connected, three grades of heavy outs 24 of extraction plant, be connected with extraction plant secondary phosphoric acid import 17 by pipeline, three grades of phase-splitting equipment of extraction plant light phase export 25 is connected with washing device mixed phase fluid inlet 30;

Washing device comprises washing device mulser B53 and washing device phase splitting device D54, washing device mulser B53 is provided with washing device mulser B import 55 and washing device mulser B outlet 56, and washing device phase splitting device D54 is provided with washing device phase splitting device B mixed phase import 57, washing device phase splitting device B heavy out 58 and washing device phase splitting device B light phase export 59.Three grades of phosphoric acid imports 60 of washing device mulser B import 55 and washing device and three grades of solvent inlets 61 of washing device are connected, and washing device mulser B outlet 56 is connected with washing device phase splitting device B mixed phase import 57.Three grades of solvent inlets 61 of washing device phase splitting device B light phase export 42 and washing device are connected, and washing device phase splitting device B heavy out 58 is connected with washing device phosphoric acid import 43; Washing device phase splitting device B light phase export 59 is connected with back extraction device one-level solvent inlet 70.

At washing device, the loaded solvent that comes out from washing device phase splitting device B light phase export 42, enter washing device mulser B53 through three grades of solvent inlets 61 of washing device under the effect of pump, washing acid (purifying phosphoric acid) enters washing device mulser B53 through three grades of phosphoric acid imports 60 of washing device; The mixed phase that forms comes out from washing device mulser B outlet 56, enter washing device phase splitting device D54 by washing device phase splitting device D mixed phase import 57, in washing device phase splitting device D54, realize the layering of mixed phase, light, the heavy two-phase that forms, washing, purifying loaded solvent come out to enter back extraction device from washing device phase splitting device D light phase export 59; Heavy phase is then come out by washing device phase splitting device D heavy out 58, returns washing device mulser A36 by washing device phosphoric acid import 43 under the effect of pump; Loaded solvent comes out, enters washing device mulser A36 through washing device solvent inlet 44 under the effect of pump from washing device phase splitting device A light phase export 34, efficient mass transfer effect by washing device mulser A36, the mixed phase that forms comes out from washing device mulser A outlet 39, enter washing device phase splitting device B37 by washing device phase splitting device B mixed phase import 40, in washing device phase splitting device B37, realize the layering of mixed phase, light, the heavy two-phase of formation.Loaded solvent enters washing device mulser B53 from washing device phase splitting device B light phase export 42, heavy phase then enters the mouth 31 from washing device mixing tank A dispersed phase fluid by washing device phase splitting device B heavy out 41 under the effect of pump, loaded solvent all enters washing device mixing tank A28 from washing device mixing tank A continuous phase fluid inlet 30, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank A28, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 32, enters washing device phase splitting device A29 by washing device phase splitting device A mixed phase import 33.In washing device phase splitting device A29, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 35, and the loaded solvent of washing impurity off comes out to enter washing device mulser A36 from washing device phase splitting device A light phase export 34.

More than among three embodiment: mixing tank adopts pipeline high-shear dispersion mixer; Phase splitting device adopts phase-splitting groove, clarifying tank etc. to reach the equipment of phase-splitting purpose; Mulser adopts Chinese patent publication number CN1658807A, open day: on 02 22nd, 2006, disclosed " a kind of multi-channeled micro-structured reactor ".

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, a kind of phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant secondary light phase export (16) is connected with washing device mixing tank A continuous phase fluid inlet (30), washing device phase splitting device B light phase export (42) is connected with back extraction device one-level solvent inlet (70), and back extraction device secondary light phase export (77) is connected with extraction plant one-level solvent inlet (9);

Extraction plant comprises extraction plant one-level mulser (1) and extraction plant one-level phase splitting device (2), extraction plant secondary mulser (10) and extraction plant secondary phase splitting device (11), extraction plant one-level mulser (1) is provided with extraction plant one-level mulser import (3) and extraction plant one-level mulser outlet (4), extraction plant one-level phase splitting device (2) is provided with extraction plant one-level mixed phase import (5), extraction plant one-level heavy out (6) and extraction plant one-level light phase export (7), extraction plant one-level mulser import (3) is connected with extraction plant one-level phosphoric acid import (8) and extraction plant one-level solvent inlet (9), and extraction plant one-level mulser outlet (4) is connected with extraction plant one-level mixed phase import (5); Extraction plant secondary mulser (10) is provided with extraction plant secondary mulser import (12) and extraction plant secondary mulser outlet (13), extraction plant secondary phase splitting device (11) is provided with extraction plant secondary mixed phase import (14), extraction plant secondary heavy out (15) and extraction plant secondary light phase export (16), extraction plant secondary mulser import (12) is connected with extraction plant secondary phosphoric acid import (17) and extraction plant secondary solvent import (18), and extraction plant secondary mulser outlet (13) is connected with extraction plant secondary mixed phase import (14); Extraction plant one-level light phase export (7) is connected with extraction plant secondary solvent import (18) by pipeline, and extraction plant secondary heavy out (15) is connected with extraction plant one-level phosphoric acid import (8) by pipeline;

Washing device comprises washing device mixing tank A (28) and washing device phase splitting device A (29), washing device mulser A (36) and washing device phase splitting device B (37), washing device mixing tank A (28) is provided with washing device mixing tank A continuous phase fluid inlet (30), washing device mixing tank A dispersed phase fluid inlet (31) and washing device mixing tank A mixed phase fluid outlet (32), washing device phase splitting device A (29) is provided with washing device phase splitting device A mixed phase import (33), washing device phase splitting device A heavy out (35) and washing device phase splitting device A light phase export (34); Washing device mulser A (36) is provided with washing device mulser A import (38) and washing device mulser A outlet (39), washing device phase splitting device B (37) is provided with washing device phase splitting device B mixed phase import (40), washing device phase splitting device B heavy out (41) and washing device phase splitting device B light phase export (42), and washing device mulser A import (38) is connected with washing device phosphoric acid import (43) and washing device solvent inlet (44); Washing device phase splitting device A light phase export (34) is connected with washing device solvent inlet (44), and washing device mulser A outlet (39) is connected with washing device phase splitting device B mixed phase import (40); Washing device phase splitting device B heavy out (41) is connected with washing device mixing tank A dispersed phase fluid inlet (31) by pipeline;

Back extraction device comprises back extraction device one-level mulser (62) and back extraction device one-level phase splitting device (63), collection device secondary mulser (71) and back extraction device secondary phase splitting device (72), back extraction device one-level mulser (62) is provided with back extraction device one-level mulser import (64) and back extraction device one-level mulser outlet (65), back extraction device one-level phase splitting device (63) is provided with back extraction device one-level mixed phase import (66), back extraction device one-level heavy out (67) and back extraction device one-level light phase export (68), back extraction device one-level mulser import (64) is connected with back extraction device one-level reverse-extraction agent import (69) and back extraction device one-level solvent inlet (70), and back extraction device one-level mulser outlet (65) is connected with back extraction device one-level mixed phase import (66); Back extraction device secondary mulser (71) is provided with back extraction device secondary mulser import (73) and back extraction device secondary mulser outlet (74), back extraction device secondary phase splitting device (72) is provided with back extraction device secondary mixed phase import (75), back extraction device secondary heavy out (76) and back extraction device secondary light phase export (77), back extraction device secondary mulser import (73) is connected with back extraction device secondary reverse-extraction agent import (78) and back extraction device secondary solvent import (79), and back extraction device secondary mulser outlet (74) is connected with back extraction device secondary mixed phase import (75); Back extraction device one-level light phase export (68) is connected with back extraction device secondary solvent import (79) by pipeline, and back extraction device secondary heavy out (76) is connected with back extraction device one-level reverse-extraction agent import (69) by pipeline.

2, phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises three grades of mulsers of extraction plant (19) and three grades of phase-splitting equipment of extraction plant (20), three grades of mulsers of extraction plant (19) are provided with three grades of mulser imports of extraction plant (21) and three grades of mulser outlets of extraction plant (22), three grades of phase-splitting equipment of extraction plant (20) are provided with three grades of mixed phase imports of extraction plant (23), three grades of light phase exports of three grades of heavy outs of extraction plant (24) and extraction plant (25), three grades of mulser imports of extraction plant (21) are connected with three grades of phosphoric acid imports of extraction plant (26) and three grades of solvent inlets of extraction plant (27), and three grades of mulser outlets of extraction plant (22) are connected with three grades of mixed phase imports of extraction plant (23); Extraction plant secondary light phase export (16) is connected with three grades of solvent inlets of extraction plant (27), three grades of heavy outs of extraction plant (24), be connected with extraction plant secondary phosphoric acid import (17) by pipeline, three grades of phase-splitting equipment of extraction plant light phase export (25) is connected with washing device mixed phase fluid inlet (30);

Washing device comprises that washing device mixing tank B (45) and washing device phase splitting device C (46), washing device mixing tank B (45) are provided with washing device mixing tank B continuous phase fluid inlet (47), washing device mixing tank B dispersed phase fluid inlet (48) and washing device mixing tank B mixed phase fluid outlet (49), and washing device phase splitting device C (46) is provided with washing device phase splitting device C mixed phase import (50), washing device phase splitting device C heavy out (52) and washing device phase splitting device C light phase export (51); Washing device phase splitting device B light phase export (42) is connected with washing device mixing tank B continuous phase fluid inlet (47), washing device phase splitting device C heavy out (52) is connected with washing device phosphoric acid import (43), and washing device phase splitting device C light phase export (51) is connected with back extraction device one-level solvent inlet (70);

Back extraction device comprises three grades of mulsers of back extraction device (80) and three grades of phase-splitting equipment of back extraction device (81), three grades of mulsers of back extraction device (80) are provided with three grades of mulser imports of back extraction device (82) and three grades of mulser outlets of back extraction device (83), three grades of phase-splitting equipment of back extraction device (81) are provided with three grades of mixed phase imports of back extraction device (84), three grades of light phase exports of three grades of heavy outs of back extraction device (85) and back extraction device (86), three grades of mulser imports of back extraction device (82) are connected with three grades of reverse-extraction agent imports of back extraction device (87) and three grades of solvent inlets of back extraction device (88), and three grades of mulser outlets of back extraction device (83) are connected with three grades of mixed phase imports of back extraction device (84); Back extraction device secondary light phase export (77) is connected with three grades of solvent inlets of back extraction device (88), three grades of heavy outs of back extraction device (85) are connected with back extraction device secondary reverse-extraction agent import (78), and three grades of phase-splittings of back extraction device are established light phase export (86) and are connected with extraction plant one-level solvent inlet (9).

3, phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises three grades of mulsers of extraction plant (19) and three grades of phase-splitting equipment of extraction plant (20), three grades of mulsers of extraction plant (19) are provided with three grades of mulser imports of extraction plant (21) and three grades of mulser outlets of extraction plant (22), three grades of phase-splitting equipment of extraction plant (20) are provided with three grades of mixed phase imports of extraction plant (23), three grades of light phase exports of three grades of heavy outs of extraction plant (24) and extraction plant (25), three grades of mulser imports of extraction plant (21) are connected with three grades of phosphoric acid imports of extraction plant (26) and three grades of solvent inlets of extraction plant (27), and three grades of mulser outlets of extraction plant (22) are connected with three grades of mixed phase imports of extraction plant (23); Extraction plant secondary light phase export (16) is connected with three grades of solvent inlets of extraction plant (27), three grades of heavy outs of extraction plant (24), be connected with extraction plant secondary phosphoric acid import (17) by pipeline, three grades of phase-splitting equipment of extraction plant light phase export (25) is connected with washing device mixed phase fluid inlet (30);

Washing device comprises washing device mulser B (53) and washing device phase splitting device D (54), washing device mulser B (53) is provided with washing device mulser B import (55) and washing device mulser B outlet (56), washing device phase splitting device D (54) is provided with washing device phase splitting device B mixed phase import (57), washing device phase splitting device B heavy out (58) and washing device phase splitting device B light phase export (59), washing device mulser B import (55) is connected with three grades of phosphoric acid imports of washing device (60) and three grades of solvent inlets of washing device (61), and washing device mulser B outlet (56) is connected with washing device phase splitting device B mixed phase import (57); Washing device phase splitting device B light phase export (42) is connected with three grades of solvent inlets of washing device (61), washing device phase splitting device B heavy out (58) is connected with washing device phosphoric acid import (43), and washing device phase splitting device B light phase export (59) is connected with back extraction device one-level solvent inlet (70);

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, as the described phosphoric acid purification device of one of claim 1-3, wherein: mulser divides mulser for the pipeline high-shear.