CN201458740U

CN201458740U - Device for purifying phosphoric acid

Info

Publication number: CN201458740U
Application number: CN2009201256382U
Authority: CN
Inventors: 李红林; 冉瑞泉; 骆广生; 王权顶
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2010-05-12
Anticipated expiration: 2019-08-14

Abstract

The utility model discloses a device for purifying phosphoric acid, comprising an extraction plant, a cleaning plant and a back extraction plant, wherein the extraction plant and the back extraction plant comprise a set of blender and phase separation plant and a set of emulsifying machine and phase separation plant, or one or more additional sets of blenders and phase separation plants (or emulsifying machines and phase separation plants), the cleaning plant comprises two sets of blenders and phase separation plants, or one or more additional sets of blenders and phase separation plants. A continuous-phase fluid inlet of the extraction plant is connected with a light-phase outlet of the final phase separation plant of the back extraction plant, a continuous-phase fluid inlet of the cleaning plant is connected with a light-phase outlet of the final phase separation plant of the extraction plant, and a continuous-phase fluid inlet of the back extraction plant is connected with a light-phase outlet of the final phase separation plant of the cleaning plant. The device for purifying phosphoric acid can strengthen mass transfer performance, increase purification efficiency, reduce equipment investment and running expense, and save floor space.

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 mixing tank 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.

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 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 is connected with washing device continuous phase fluid inlet, washing device secondary light phase export is connected with back extraction device mixing A continuous phase fluid inlet, and back extraction device phase splitting device B light phase export is connected with extraction plant mixing tank A continuous phase fluid inlet;

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

Washing device comprises washing device mixing tank and washing device phase splitting device, washing device secondary mixing tank and washing device secondary phase splitting device, the washing device mixing tank is provided with washing device continuous phase fluid inlet, washing device dispersed phase fluid inlet and the outlet of washing device mixed phase fluid, the washing device phase splitting device is provided with the import of washing device mixed phase, washing device heavy out and washing device light phase export, and the outlet of washing device mixed phase fluid is connected with the import of washing device mixed phase; Washing device secondary mixing tank is provided with washing device secondary continuous phase fluid inlet, washing device secondary dispersed phase fluid inlet and the outlet of washing device secondary mixed phase fluid, washing device secondary phase splitting device is provided with the import of washing device secondary mixed phase, washing device secondary heavy out and washing device secondary light phase export, and the outlet of washing device secondary mixed phase fluid is connected with the import of washing device secondary mixed phase; The washing device light phase export is connected with washing device secondary continuous phase fluid inlet by pipeline, washing device secondary heavy out is connected with washing device dispersed phase fluid inlet by pipeline, and washing device secondary light phase export is connected with back extraction device continuous phase fluid inlet;

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

Above-mentioned phosphoric acid purification device, wherein: comprise extraction plant mixing tank B and extraction plant phase splitting device C, 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 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, and the outlet of extraction plant mixing tank B mixed phase fluid is connected with the import of extraction plant phase splitting device C 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 C heavy out is connected with the import of extraction plant phosphoric acid, and extraction plant phase splitting device C light phase export is connected with washing device mixing tank continuous phase fluid inlet;

Washing device comprises three grades of mixing tanks of washing device and three grades of phase-splitting equipment of washing device, three grades of mixing tanks of washing device are provided with three grades of continuous phase fluid inlets of washing device, washing device disperses phase fluid inlet and three grades of mixed phase fluid outlets of washing device for three grades, three grades of phase-splitting equipment of washing device are provided with three grades of mixed phase imports of washing device, three grades of heavy outs of washing device and three grades of light phase exports of washing device, and three grades of mixed phase fluid outlets of washing device are connected with three grades of mixed phase imports of washing device; Three grades of continuous phase fluid inlets of washing device secondary light phase export and washing device are connected, three grades of heavy outs of washing device are connected with washing device secondary dispersed phase fluid inlet, and three grades of light phase exports of washing device are connected with back extraction device mixing tank A continuous phase fluid inlet;

Back extraction device comprises that back extraction device mixing tank B and back extraction device phase splitting device D, back extraction device mixing tank B are 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 heavy out and back extraction device phase splitting device D light phase export, 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, and back extraction device phase splitting device D heavy out is connected with the import of back extraction device phosphoric acid; Back extraction device phase splitting device D light phase export is connected with extraction plant mixing tank A continuous phase fluid inlet.

Above-mentioned phosphoric acid purification device, wherein: comprise extraction plant mulser B and extraction plant phase splitting device D, extraction plant mulser B is provided with B import of extraction plant mulser and extraction plant mulser B outlet, 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 heavy out and extraction plant phase splitting device D 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 of extraction plant, and extraction plant mulser B outlet is connected with the import of extraction plant phase splitting device D 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 D heavy out is connected with the import of extraction plant phosphoric acid, and extraction plant phase splitting device D light phase export is connected with washing device mixing tank continuous phase fluid inlet;

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 B import of back extraction device mulser and 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 the import of back extraction device phosphoric acid, and back extraction device phase splitting device C light phase export is connected with extraction plant mixing tank A continuous phase fluid 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, extraction plant, the back extraction device that constitutes phosphoric acid purification device 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 on aforesaid combination one or more groups mixing tank of increase and phase splitting device (or mulser and phase splitting device); Washing device is selected two groups of mixing tanks and phase splitting device for use, or increasing one or more groups mixing tank and phase splitting device on the aforesaid combination. in the phosphoric acid purification process, feed phosphoric acid (fresh phosphoric), de-salted water is by the final stage extraction plant, the mixing tank of final stage back extraction device, mulser dispersed phase fluid inlet, the phosphoric acid import adds, washing acid (purifying phosphoric acid), add by washing device final stage mixer disperses phase fluid inlet, the no-load solvent of extraction plant continuous phase fluid inlet is from the light phase export of back extraction device final stage phase splitting device, the loaded solvent of washing device continuous phase fluid inlet is from the light phase export of extraction plant final stage phase splitting device, the loaded solvent of back extraction device continuous phase fluid inlet is from the light phase export of washing device final stage phase splitting device. because mulser, the mixing tank mass transfer area is big, the mass-transfer efficiency height. from mulser, the mixed solution that mixing tank comes out is easy to phase-splitting, thereby guaranteeing 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) leaks in a large number and the peace ring accident that causes; Mulser, mixing tank floor space are little, and appliance arrangement is arranged simple, and factory building can be realized miniaturization; Mulser, mixing tank cost are low, can save facility investment.

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the structural representation of embodiment 2;

Fig. 3 is the structural representation of embodiment 3.

Mark among the figure:

1, extraction plant mixing tank A, 2, extraction plant phase splitting device A, 3, extraction plant mixing tank A continuous phase fluid inlet, 4, extraction plant mixing tank A dispersed phase fluid inlet, 5, the outlet of extraction plant mixing tank A mixed phase fluid, 6, the import of extraction plant phase splitting device A mixed phase, 7, extraction plant phase splitting device A light phase export, 8, extraction plant phase splitting device A heavy out, 9, extraction plant mulser A, 10, extraction plant phase splitting device B, 11, extraction plant mulser A import, 12, extraction plant mulser A outlet, 13, the import of extraction plant phase splitting device B mixed phase, 14, extraction plant phase splitting device B heavy out, 15, extraction plant phase splitting device B light phase export, 16, the import of extraction plant phosphoric acid, 17, the extraction plant solvent inlet, 18, extraction plant mixing tank B, 19, extraction plant phase splitting device C, 20, extraction plant mixing tank B continuous phase fluid inlet, 21, extraction plant mixing tank B dispersed phase fluid inlet, 22, the outlet of extraction plant mixing tank B mixed phase fluid, 23, the import of extraction plant phase splitting device C mixed phase, 24, extraction plant phase splitting device C light phase export, 25, extraction plant phase splitting device C heavy out, 26, extraction plant mulser B, 27, extraction plant phase splitting device D, 28, extraction plant mulser B import, 29, extraction plant mulser B outlet, 30, the import of extraction plant phase splitting device D mixed phase, 31, extraction plant phase splitting device D heavy out, 32, extraction plant phase splitting device D light phase export, 33, three grades of phosphoric acid imports of extraction plant, 34, three grades of solvent inlets of extraction plant, 35, the washing device mixing tank, 36, the washing device phase splitting device, 37, washing device continuous phase fluid inlet, 38, washing device dispersed phase fluid inlet, 39, the outlet of washing device mixed phase fluid, 40, the import of washing device mixed phase, 41, the washing device light phase export, 42, the washing device heavy out, 43, washing device secondary mixing tank, 44, washing device secondary phase splitting device, 45, washing device secondary continuous phase fluid inlet, 46, washing device secondary dispersed phase fluid inlet, 47, the outlet of washing device secondary mixed phase fluid, 48, the import of washing device secondary mixed phase, 49, washing device secondary light phase export, 50, washing device secondary heavy out, 51, three grades of mixing tanks of washing device, 52, three grades of phase-splitting equipment of washing device, 53, three grades of continuous phase fluid inlets of washing device, 54, washing device disperses the phase fluid inlet for three grades, 55, three grades of mixed phase fluid outlets of washing device, 56, three grades of mixed phase imports of washing device, 57, three grades of light phase exports of washing device, 58, three grades of heavy outs of washing device, 59, back extraction device mixing tank A, 60, back extraction device phase splitting device A, 61, back extraction device mixing tank A continuous phase fluid inlet, 62, back extraction device mixing tank A dispersed phase fluid inlet, 63, the outlet of back extraction device mixing tank A mixed phase fluid, 64, the import of back extraction device phase splitting device A mixed phase, 65, back extraction device phase splitting device A light phase export, 66, back extraction device phase splitting device A heavy out, 67, back extraction device mulser A, 68, back extraction device phase splitting device B, 69, back extraction device mulser A import, 70, back extraction device mulser A outlet, 71, the import of back extraction device phase splitting device B mixed phase, 72, back extraction device phase splitting device B heavy out, 73, back extraction device phase splitting device B light phase export, 74, the import of back extraction device phosphoric acid, 75, the back extraction device solvent inlet, 76, back extraction device mixing tank B, 77, back extraction device phase splitting device D, 78, back extraction device mixing tank B continuous phase fluid inlet, 79, back extraction device mixing tank B dispersed phase fluid inlet, 80, the outlet of back extraction device mixing tank B mixed phase fluid, 81, back extraction device phase splitting device D mixing import, 82, back extraction device phase splitting device D light phase export, 83, back extraction device phase splitting device D heavy out, 84, back extraction device mulser B, 85, back extraction device phase splitting device C, 86, back extraction device mulser B import, 87, back extraction device mulser B outlet, 88, the import of back extraction device phase splitting device C mixed phase, 89, back extraction device phase splitting device C heavy out, 90, back extraction device phase splitting device C light phase export, 91, three grades of phosphoric acid imports of back extraction device, 92, 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 single-stage extraction, washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: wherein: extraction plant phase splitting device B light phase export 15 is connected with washing device mixing tank continuous phase fluid inlet 37, washing device secondary light phase export 49 is connected with back extraction device mixing A continuous phase fluid inlet 61, and back extraction device phase splitting device B light phase export 73 is connected with extraction plant mixing tank A continuous phase fluid inlet 3;

Extraction plant comprises extraction plant mixing tank A1 and extraction plant phase splitting device A2, extraction plant mulser A9 and extraction plant phase splitting device B10, extraction plant mixing tank A1 is provided with extraction plant mixing tank A continuous phase fluid inlet 3, extraction plant mixing tank A dispersed phase fluid inlet 4 and extraction plant mixing tank A mixed phase fluid outlet 5, extraction plant phase splitting device A2 is provided with extraction plant phase splitting device A mixed phase import 6, extraction plant phase splitting device A heavy out 8 and extraction plant phase splitting device A light phase export 7, extraction plant mixing tank A mixed phase fluid outlet 5 are connected with extraction plant phase splitting device A mixed phase import 6; Extraction plant mulser A9 is provided with extraction plant mulser A import 11 and extraction plant mulser A outlet 12, and extraction plant phase splitting device B10 is provided with extraction plant phase splitting device B mixed phase import 13, extraction plant phase splitting device B heavy out 14 and extraction plant phase splitting device B light phase export 15.Extraction plant mulser A import 11 is connected with extraction plant phosphoric acid import 16 and extraction plant solvent inlet 17, and extraction plant mulser A outlet 12 is connected with extraction plant phase splitting device B mixed phase import 13; Extraction plant phase splitting device A light phase export 7 is connected with extraction plant solvent inlet 17, and extraction plant phase splitting device B heavy out 14 is connected with extraction plant mixing tank A dispersed phase fluid inlet 4 by pipeline;

Washing device comprises washing device mixing tank 35 and washing device phase splitting device 36, washing device secondary mixing tank 43 and washing device secondary phase splitting device 44, washing device mixing tank 35 is provided with washing device continuous phase fluid inlet 37, washing device dispersed phase fluid inlet 38, with washing device mixed phase fluid outlet 39, washing device phase splitting device 36 is provided with washing device phase splitting device mixed phase import 40, washing device heavy out 42 and washing device light phase export 41, washing device mixed phase fluid outlet 39 are connected with washing device phase splitting device mixed phase import 40; Washing device secondary mixing tank 43 is provided with washing device secondary continuous phase fluid inlet 45, washing device secondary dispersed phase fluid inlet 46 and washing device secondary mixed phase fluid outlet 47, washing device secondary phase splitting device 44 is provided with washing device secondary mixed phase import 48, washing device secondary heavy out 50 and washing device secondary light phase export 49, and washing device secondary mixed phase fluid outlet 47 is connected with washing device secondary mixed phase import 48; Washing device light phase export 41, the pipeline by being provided with pump and washing device secondary continuous phase fluid inlet 45 are connected; Washing device secondary heavy out 50, the pipeline by being provided with pump and washing device dispersed phase fluid inlet 38 are connected, and washing device secondary light phase export 49 and back extraction device mixing A continuous phase fluid enter the mouth and 61 be connected;

Back extraction device comprises back extraction device mixing tank A59 and back extraction device phase splitting device A60, back extraction device mulser A67 and back extraction device phase splitting device B68, back extraction device mixing tank A59 is provided with back extraction device mixing tank A continuous phase fluid inlet 61, back extraction device mixing tank A dispersed phase fluid inlet 62 and back extraction device mixing tank A mixed phase fluid outlet 63, back extraction device phase splitting device A60 is provided with back extraction device phase splitting device A mixed phase import 64, back extraction device phase splitting device A heavy out 66 and back extraction device phase splitting device A light phase export 65, back extraction device mixing tank A mixed phase fluid outlet 63 are connected with back extraction device phase splitting device A mixed phase import 64; Back extraction device mulser A67 is provided with back extraction device mulser A import 69 and back extraction device mulser A outlet 70, back extraction device phase splitting device B68 is provided with back extraction device phase splitting device B mixed phase import 71, back extraction device phase splitting device B heavy out 72 and back extraction device phase splitting device B light phase export 73, back extraction device mulser A import 69 is connected with back extraction device solvent inlet 75 with back extraction device phosphoric acid import 74, and back extraction device mulser A outlet 70 is connected with back extraction device phase splitting device B mixed phase import 71; Back extraction device phase splitting device B light phase export 65 is connected with back extraction device solvent inlet 75, and back extraction device mulser A outlet 70 is connected with back extraction device phase splitting device B mixed phase import 71; Back extraction device phase splitting device B heavy out 72 is connected with back extraction device mixing tank A dispersed phase fluid inlet 62.

During use: at extraction plant, the phosphoric acid that comes out from extraction plant phase splitting device B heavy out 14 enters the mouth 4 from extraction plant mixing tank A dispersed phase fluid under the effect of pump, extraction agent (from the no-load solvent of back extraction device phase splitting device B light phase export 73) enters extraction plant mixing tank A1 from extraction plant mixing tank A continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant mixing tank A1, the mixed phase that forms comes out from extraction plant mixing tank A mixed phase fluid outlet 5, enters extraction plant phase splitting device A2 by extraction plant phase splitting device A mixed phase import 6.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 8 discharges of extraction plant phase splitting device A heavy out, phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant phase splitting device B light phase export 7, enters extraction plant mulser A9 through extraction plant solvent inlet 17 under the effect of pump; Feed phosphoric acid (fresh phosphoric) enters extraction plant mulser A9 through extraction plant phosphoric acid import 16, efficient mass transfer effect by extraction plant mulser A9, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant mulser A outlet 12, enter extraction plant phase splitting device B10 by extraction plant phase splitting device B mixed phase import 13, in extraction plant phase splitting device B10, 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 mixing tank A continuous phase fluid inlet 37 from extraction plant phase splitting device B light phase export 15, heavy phase is then returned extraction plant mixing tank A1 by extraction plant phase splitting device B heavy out 14, thereby realizes extracting and separating.

At washing device, the phosphoric acid that washing device secondary heavy out 50 comes out, under the effect of pump, return washing device dispersed phase fluid inlet 38, the loaded solvent that comes from extraction plant enters washing device mixing tank 35 from washing device continuous phase fluid inlet 37, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank 35, the mixed phase that forms comes out from washing device mixed phase fluid outlet 39, enter washing device phase splitting device 36. is realized mixed phase in washing device phase splitting device 36 layering by washing device phase splitting device mixed phase import 40, what form is light, heavy two-phase. the impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device heavy out 42, being washed the loaded solvent that has purified comes out from washing device light phase export 41, under the effect of pump, enter washing device secondary mixing tank 43. washing acids (purifying phosphoric acid) and enter washing device secondary mixing tank 43 through washing device secondary dispersed phase fluid inlet 46 through washing device secondary continuous phase fluid inlet 45, efficient mass transfer effect by washing device secondary mixing tank 43, further improve the molten washing effect of load, the mixed phase that forms comes out from washing device secondary mixed phase fluid outlet 47, enter washing device secondary phase splitting device 44 by washing device secondary phase splitting device mixed phase import 48, in washing device secondary phase splitting device 44, realize the layering of mixed phase, what form is light, heavy two-phase, be washed the loaded solvent that has purified and enter back extraction device from washing device secondary light phase export 49, impurity in the loaded solvent enters heavy phase and returns washing device mixing tank 35 by washing device secondary heavy out 50, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that comes out from back extraction device phase splitting device B heavy out 72 under the effect of pump from back extraction device mixing tank A dispersed phase fluid inlet 62, enter back extraction device mixing tank A59 from back extraction device mixing tank A continuous phase fluid inlet 61 from the loaded solvent of washing device, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mixing tank A59, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 63, enters back extraction device phase splitting device B60 by back extraction device phase splitting device B mixed phase import 64.In back extraction device phase splitting device B60, 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 66 discharges of back extraction device phase splitting device B heavy out, the loaded solvent that also contains part phosphoric acid comes out from back extraction device phase splitting device A light phase export 65, enters back extraction device mulser A67 through back extraction device solvent inlet 75 under the effect of pump; De-salted water enters back extraction device mulser A67 through back extraction device phosphoric acid import 74, efficient mass transfer effect by back extraction device mulser A67, further improve the back extraction effect, the mixed phase that forms comes out from back extraction device mulser A outlet 70, enter back extraction device phase splitting device B68 by back extraction device phase splitting device B mixed phase import 71, in back extraction device phase splitting device B68, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent of being washed off phosphoric acid becomes no-load solvent and returns extraction plant mixing tank A continuous phase fluid inlet 3 from back extraction device phase splitting device B light phase export 73, heavy phase is then returned back extraction device mixing tank A59 by back extraction device phase splitting device B heavy out 72, realizes 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 extraction plant mixing tank B18 and extraction plant phase splitting device C19, extraction plant mixing tank B18 is provided with extraction plant mixing tank B continuous phase fluid inlet 20, extraction plant mixing tank B dispersed phase fluid inlet 21 and extraction plant mixing tank B mixed phase fluid outlet 22, extraction plant phase splitting device C19 is provided with extraction plant phase splitting device C mixed phase import 23, extraction plant phase splitting device C heavy out 25 and extraction plant phase splitting device C light phase export 24, extraction plant mixing tank B mixed phase fluid outlet 22 are connected with extraction plant phase splitting device C mixed phase import 23; Extraction plant phase splitting device B light phase export 15 is connected with extraction plant mixing tank B continuous phase fluid inlet 20, and extraction plant phase splitting device C heavy out 25 is connected with extraction plant phosphoric acid import 16; Extraction plant phase splitting device C light phase export 24 is connected with washing device mixing tank continuous phase fluid inlet 37.

Washing device comprises three grades of mixing tanks 51 of washing device and three grades of phase-splitting equipment 52 of washing device, three grades of mixing tanks 51 of washing device are provided with three grades of continuous phase fluid inlets 53 of washing device, washing device disperses phase fluid inlet 54 and three grades of mixed phase fluid outlets 55 of washing device for three grades, three grades of phase-splitting equipment 52 of washing device are provided with three grades of mixed phase imports 56 of washing device, three grades of heavy outs 58 of washing device and three grades of light phase exports 57 of washing device, and three grades of mixed phase fluid of washing device outlet 55 is connected with three grades of mixed phase imports 56 of washing device; Three grades of continuous phase fluid inlets 53 of washing device secondary light phase export 49 and washing device are connected, three grades of heavy outs 58 of washing device are connected with washing device secondary dispersed phase fluid inlet 46, and three grades of light phase exports 57 of washing device are connected with back extraction device mixing A continuous phase fluid inlet 61;

Back extraction device comprises back extraction device mixing tank B76 and back extraction device phase splitting device D77, back extraction device mixing tank B76 is provided with back extraction device mixing tank B continuous phase fluid inlet 78, back extraction device mixing tank B dispersed phase fluid inlet 79 and back extraction device mixing tank B mixed phase fluid outlet 80, back extraction device phase splitting device D77 is provided with back extraction device phase splitting device D mixed phase import 81, back extraction device phase splitting device D heavy out 83 and back extraction device phase splitting device D light phase export 82, back extraction device mixing tank B mixed phase fluid outlet (80) is connected with back extraction device phase splitting device D mixed phase import (81); Back extraction device phase splitting device B light phase export 73 is connected with back extraction device mixing tank B continuous phase fluid inlet 78; Back extraction device phase splitting device D heavy out 83 is connected with back extraction device phosphoric acid import 74, and back extraction device phase splitting device D light phase export 82 is connected with extraction plant mixing tank A continuous phase fluid inlet 3. and all the other are with embodiment 1.

During use, at extraction plant, loaded solvent comes out, enters the mouth 20 through extraction plant mixing tank B continuous phase fluid under the effect of pump from extraction plant phase splitting device B light phase export 15, and feed phosphoric acid (fresh phosphoric) enters extraction plant mixing tank B18 through extraction plant mixing tank B dispersed phase fluid inlet 21; The mixed phase that forms comes out from extraction plant mixing tank B mixed phase fluid outlet 22, enter extraction plant phase splitting device C19 by extraction plant phase splitting device C mixed phase import 23, in extraction plant phase splitting device C19, realize the layering of mixed phase, light, the heavy two-phase that forms, most of phosphoric acid are extracted the agent extraction and enter and gently form loaded solvent mutually and come out to enter washing device from extraction plant phase splitting device C light phase export 24; Heavy phase is then returned extraction plant mulser A9 by extraction plant phase splitting device C heavy out 25, the loaded solvent that enters with extraction plant solvent inlet 17 is by the efficient mass transfer effect of extraction plant mulser A9, the mixed phase that forms comes out from extraction plant mulser A outlet 12, enter extraction plant phase splitting device B10 by extraction plant phase splitting device B mixed phase import 13, in extraction plant phase splitting device B10, realize the layering of mixed phase, what form is light, heavy two-phase, most of phosphoric acid are extracted the agent extraction and enter and gently form loaded solvent mutually and enter extraction plant mixing tank B18 from extraction plant phase splitting device B light phase export 15.Heavy phase is then returned extraction plant mixing tank A dispersed phase fluid inlet 4 by extraction plant phase splitting device B heavy out 14, extraction agent (from the no-load solvent of back extraction device phase splitting device D light phase export 82) enters extraction plant mixing tank A1 from extraction plant mixing tank A continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant mixing tank A1, the mixed phase that forms comes out from extraction plant mixing tank A mixed phase fluid outlet 5, enters extraction plant phase splitting device A2 by extraction plant phase splitting device A mixed phase import 6.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 8 discharges of extraction plant phase splitting device A heavy out.Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant phase splitting device B light phase export 7, enters extraction plant mulser A9 through extraction plant solvent inlet 17 under the effect of pump.

At washing device, the phosphoric acid that washing device washing device secondary secondary heavy out 50 comes out, under the effect of pump, return washing device dispersed phase fluid inlet 38, loaded solvent from extraction plant enters washing device mixing tank 35 from washing device continuous phase fluid inlet 37, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank 35, the mixed phase that forms comes out from washing device mixed phase fluid outlet 39, enter washing device phase splitting device 36. is realized mixed phase in washing device phase splitting device 36 layering by washing device phase splitting device mixed phase import 40, what form is light, heavy two-phase. the impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device heavy out 42, being washed the loaded solvent that has purified comes out from washing device light phase export 41, under the effect of pump, enter the phosphoric acid that washing device secondary mixing tank 43. comes out from three grades of heavy outs 58 of washing device and return washing device secondary dispersed phase fluid inlet 46 through washing device secondary continuous phase fluid inlet 45, effect of mass transmitting by washing device secondary mixing tank 43, the mixed phase that forms comes out from washing device secondary mixed phase fluid outlet 47, enter washing device secondary phase splitting device 44 by washing device secondary phase splitting device mixed phase import 48, in washing device secondary phase splitting device 44, realize the layering of mixed phase, what form is light, heavy two-phase, loaded solvent comes out from washing device secondary light phase export 49, entering three grades of mixing tank 51. washing acids of washing device (purifying phosphoric acid) through three grades of continuous phase fluid inlets 53 of washing device under the effect of pump disperses phase fluid inlet 54 to enter three grades of mixing tanks 51 of washing device through three grades of washing devices, efficient mass transfer effect by multistage washing device mixing tank has improved the phosphoric acid washing effect as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 55 of washing device, enter three grades of phase-splitting equipment 52 of washing device by three grades of phase-splitting equipment of washing device mixed phase import 56, in three grades of phase-splitting equipment 52 of washing device, realize the layering of mixed phase, what form is light, heavy two-phase, be washed the loaded solvent that has purified and come out to enter the back extraction device preface from three grades of light phase exports of washing device 57, impurity in the loaded solvent enters heavy phase and returns washing device secondary mixing tank 43. by three grades of washings by three grades of heavy outs 58 of washing device, impurity major part in the loaded solvent is entered heavy phase by phosphoric acid washing and finally discharges from washing device phase splitting device heavy phase mouth, thereby realizes washing, purifying.

At back extraction device, loaded solvent comes out, enters the mouth 78 through back extraction device mixing tank B continuous phase fluid under the effect of pump from back extraction device phase splitting device B light phase export 73, and de-salted water enters back extraction device mixing tank B76 through back extraction device mixing tank B dispersed phase fluid inlet 79; The mixed phase that forms comes out from back extraction device mixing tank B mixed phase fluid outlet 80, enter back extraction device phase splitting device D77 by back extraction device phase splitting device D mixed phase import 81, in back extraction device phase splitting device D77, realize the layering of mixed phase, light, the heavy two-phase that forms, the loaded solvent of taking off phosphoric acid becomes no-load solvent and comes out to return extraction plant from back extraction device phase splitting device D light phase export 82; Heavy phase is then returned back extraction device mulser A67 by back extraction device phase splitting device D heavy out 83, the loaded solvent that enters with back extraction device solvent inlet 75 is by the efficient mass transfer effect of back extraction device mulser A67, the mixed phase that forms comes out from back extraction device mulser A outlet 70, enter back extraction device phase splitting device B68 by back extraction device phase splitting device B mixed phase import 71, in back extraction device phase splitting device B68, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent of taking off part phosphoric acid enters back extraction device mixing tank B76 from back extraction device phase splitting device B light phase export 73.Heavy phase is then returned back extraction device mixing tank A dispersed phase fluid inlet 62 by back extraction device phase splitting device B heavy out 72, loaded solvent from washing device enters back extraction device mixing tank A59 from back extraction device mixing tank A continuous phase fluid inlet 61, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mixing tank A59, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 63, enters back extraction device phase splitting device B60 by back extraction device phase splitting device B mixed phase import 64.In back extraction device phase splitting device B60, 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 66 discharges of back extraction device phase splitting device B heavy out.The loaded solvent that also contains part phosphoric acid comes out from back extraction device phase splitting device A light phase export 65, enters back extraction device mulser A67 through back extraction device solvent inlet 75 under the effect of pump.

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 extraction plant mulser B26 and extraction plant phase splitting device D27, extraction plant mulser B26 is provided with extraction plant mulser B import 28 and extraction plant mulser B outlet 29, extraction plant phase splitting device D27 is provided with extraction plant phase splitting device D mixed phase import 30, extraction plant phase splitting device D heavy out 31 and extraction plant phase splitting device D light phase export 32, three grades of phosphoric acid imports 33 of extraction plant mulser B import 28 and extraction plant are connected with three grades of solvent inlets 34 of extraction plant, and extraction plant mulser B outlet 29 is connected with extraction plant phase splitting device D mixed phase import 30; Three grades of solvent inlets 34 of extraction plant phase splitting device B light phase export 15 and extraction plant are connected, and extraction plant phase splitting device D heavy out 31 is connected with extraction plant phosphoric acid import 16; Extraction plant phase splitting device D light phase export 32 is connected with washing device mixing tank continuous phase fluid inlet 37;

Washing device comprises three grades of mixing tanks 51 of washing device and three grades of phase-splitting equipment 52 of washing device, three grades of mixing tanks 51 of washing device are provided with three grades of continuous phase fluid inlets 53 of washing device, washing device disperses phase fluid inlet 54 and three grades of mixed phase fluid outlets 55 of washing device for three grades, three grades of phase-splitting equipment 52 of washing device are provided with three grades of mixed phase imports 56 of washing device, three grades of heavy outs 57 of washing device and three grades of light phase exports 58 of washing device, and three grades of mixed phase fluid of washing device outlet 55 is connected with three grades of mixed phase imports 56 of washing device; Three grades of continuous phase fluid inlets 53 of washing device secondary light phase export 49 and washing device are connected, three grades of heavy outs 58 of washing device are connected with washing device secondary dispersed phase fluid inlet 46, and three grades of light phase exports 57 of washing device are connected with back extraction device mixing A continuous phase fluid inlet 61;

Back extraction device comprises back extraction device mulser B84 and back extraction device phase splitting device C85, back extraction device mulser B84 is provided with back extraction device mulser B import 86 and back extraction device mulser B outlet 87, back extraction device phase splitting device C85 is provided with back extraction device phase splitting device C mixed phase import 88, back extraction device phase splitting device C heavy out 89 and back extraction device phase splitting device C light phase export 90, three grades of phosphoric acid imports 91 of back extraction device mulser B import 86 and back extraction device are connected with three grades of solvent inlets 92 of back extraction device, and back extraction device mulser B outlet 87 is connected with back extraction device phase splitting device C mixed phase import 88.Three grades of solvent inlets 92 of back extraction device phase splitting device B light phase export 73 and back extraction device are connected, and back extraction device phase splitting device C heavy out 89 is connected with back extraction device phosphoric acid import 74; Back extraction device phase splitting device C light phase export 90 is connected with extraction plant mixing tank A continuous phase fluid inlet 3.All the other are with embodiment 1.

During use, at extraction plant, the loaded solvent that comes out from extraction plant phase splitting device B light phase export 15, enter extraction plant mulser B26 through three grades of solvent inlets 34 of extraction plant under the effect of pump, feed phosphoric acid (fresh phosphoric) enters extraction plant mulser B26 through three grades of phosphoric acid imports 33 of extraction plant; The mixed phase that forms comes out from extraction plant mulser B outlet 29, enter extraction plant phase splitting device D27 by extraction plant phase splitting device D mixed phase import 30, in extraction plant phase splitting device D27, realize the layering of mixed phase, light, the heavy two-phase that forms, most of phosphoric acid are extracted the agent extraction and enter and gently form loaded solvent mutually and come out to enter washing device from extraction plant phase splitting device D light phase export 32; Heavy phase is then come out by extraction plant phase splitting device D heavy out 31, returns extraction plant mulser A9 by extraction plant phosphoric acid import 16 under the effect of pump; Loaded solvent comes out, enters extraction plant mulser A9 through extraction plant solvent inlet 17 under the effect of pump from extraction plant phase splitting device A light phase export 7, efficient mass transfer effect by extraction plant mulser A9, the mixed phase that forms comes out from extraction plant mulser A outlet 12, enter extraction plant phase splitting device B10 by extraction plant phase splitting device B mixed phase import 13, in extraction plant phase splitting device B10, realize the layering of mixed phase, light, the heavy two-phase of formation.Loaded solvent enters extraction plant mulser B26 from extraction plant phase splitting device B light phase export 15, heavy phase then enters the mouth 4 from extraction plant mixing tank A dispersed phase fluid by extraction plant phase splitting device B heavy out 14 under the effect of pump, extraction agent (from the no-load solvent of back extraction device phase splitting device C light phase export 90) all enters extraction plant mixing tank A1 from extraction plant mixing tank A continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant mixing tank A1, the mixed phase that forms comes out from extraction plant mixing tank A mixed phase fluid outlet 5, enters extraction plant phase splitting device A2 by extraction plant phase splitting device A mixed phase import 6.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 to be become raffinate and discharges from extraction plant phase splitting device A heavy out 8, and phosphoric acid is extracted the agent extraction to be become loaded solvent and come out to enter extraction plant mulser A9 from extraction plant phase splitting device B light phase export 7.

At washing device, the phosphoric acid that washing device secondary heavy out 50 comes out, under the effect of pump, return washing device dispersed phase fluid inlet 38, loaded solvent from extraction plant enters washing device mixing tank 35 from washing device continuous phase fluid inlet 37, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mixing tank 35, the mixed phase that forms comes out from washing device mixed phase fluid outlet 39, enter washing device phase splitting device 36. is realized mixed phase in washing device phase splitting device 36 layering by washing device phase splitting device mixed phase import 40, what form is light, heavy two-phase. the impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device heavy out 42, being washed the loaded solvent that has purified comes out from washing device light phase export 41, under the effect of pump, enter the phosphoric acid that washing device secondary mixing tank 43. comes out from three grades of heavy outs 58 of washing device and return washing device secondary dispersed phase fluid inlet 46 through washing device secondary continuous phase fluid inlet 45, effect of mass transmitting by washing device secondary mixing tank 43, the mixed phase that forms comes out from washing device secondary mixed phase fluid outlet 47, enter washing device secondary phase splitting device 44 by washing device secondary phase splitting device mixed phase import 48, in washing device secondary phase splitting device 44, realize the layering of mixed phase, what form is light, heavy two-phase, loaded solvent comes out from washing device secondary light phase export 49, entering three grades of mixing tank 51. washing acids of washing device (purifying phosphoric acid) through three grades of continuous phase fluid inlets 53 of washing device under the effect of pump disperses phase fluid inlet 54 to enter three grades of mixing tanks 51 of washing device through three grades of washing devices, efficient mass transfer effect by multistage washing device mixing tank has improved the phosphoric acid washing effect as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 55 of washing device, enter three grades of phase-splitting equipment 52 of washing device by three grades of phase-splitting equipment of washing device mixed phase import 56, in three grades of phase-splitting equipment 52 of washing device, realize the layering of mixed phase, what form is light, heavy two-phase, be washed the loaded solvent that has purified and come out to enter the back extraction device preface from three grades of light phase exports of washing device 57, impurity in the loaded solvent enters heavy phase and returns washing device secondary mixing tank 43. by three grades of washings by three grades of heavy outs 58 of washing device, impurity major part in the loaded solvent is entered heavy phase by phosphoric acid washing and finally discharges from washing device phase splitting device heavy phase mouth, thereby realizes washing, purifying.

At back extraction device, the loaded solvent that comes out from back extraction device phase splitting device B light phase export 73, enter back extraction device mulser B84 through three grades of solvent inlets 92 of back extraction device under the effect of pump, de-salted water enters back extraction device mulser B84 through three grades of phosphoric acid imports 91 of back extraction device; The mixed phase that forms comes out from back extraction device mulser B outlet 87, enter back extraction device phase splitting device C85 by back extraction device phase splitting device C mixed phase import 88, in back extraction device phase splitting device C85, realize the layering of mixed phase, light, the heavy two-phase that forms, the loaded solvent of taking off phosphoric acid becomes no-load solvent and comes out to return extraction plant from back extraction device phase splitting device C light phase export 90; Heavy phase is then come out by back extraction device phase splitting device C heavy out 89, returns back extraction device mulser A67 by back extraction device phosphoric acid import 74 under the effect of pump; Loaded solvent comes out, enters back extraction device mulser A67 through back extraction device solvent inlet 75 under the effect of pump from back extraction device phase splitting device B light phase export 65, efficient mass transfer effect by back extraction device mulser A67, the mixed phase that forms comes out from back extraction device mulser A outlet 70, enter back extraction device phase splitting device B68 by back extraction device phase splitting device B mixed phase import 71, in back extraction device phase splitting device B68, realize the layering of mixed phase, light, the heavy two-phase of formation.Loaded solvent enters back extraction device mulser B84 from back extraction device phase splitting device B light phase export 73, heavy phase then enters the mouth 62 from back extraction device mixing tank A dispersed phase fluid by back extraction device phase splitting device B heavy out 72 under the effect of pump, loaded solvent from washing device all enters back extraction device mixing tank A59 from back extraction device mixing tank A continuous phase fluid inlet 61, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mixing tank A59, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 63, enters back extraction device phase splitting device B60 by back extraction device phase splitting device B mixed phase import 64.In back extraction device phase splitting device B60, 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 66 discharges of back extraction device phase splitting device B heavy out, and the loaded solvent that also contains part phosphoric acid comes out to enter back extraction device mulser A67 from back extraction device phase splitting device A light phase export 65.

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 ".

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 (15) is connected with washing device continuous phase fluid inlet (37), washing device secondary light phase export (49) is connected with back extraction device mixing A continuous phase fluid inlet (61), and back extraction device phase splitting device B light phase export (73) is connected with extraction plant mixing tank A continuous phase fluid inlet (3);

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

Washing device comprises washing device mixing tank (35) and washing device phase splitting device (36), washing device secondary mixing tank (43) and washing device secondary phase splitting device (44), washing device mixing tank (35) is provided with washing device continuous phase fluid inlet (37), washing device dispersed phase fluid inlet (38) and washing device mixed phase fluid outlet (39), washing device phase splitting device (36) is provided with washing device mixed phase import (40), washing device heavy out (42) and washing device light phase export (41), washing device mixed phase fluid outlet (39) is connected with washing device mixed phase import (40); Washing device secondary mixing tank (43) is provided with washing device secondary continuous phase fluid inlet (45), washing device secondary dispersed phase fluid inlet (46) and washing device secondary mixed phase fluid outlet (47), washing device secondary phase splitting device (44) is provided with washing device secondary mixed phase import (48), washing device secondary heavy out (50) and washing device secondary light phase export (49), and washing device secondary mixed phase fluid outlet (47) is connected with washing device secondary mixed phase import (48); Washing device light phase export (41) is connected with washing device secondary continuous phase fluid inlet (45) by pipeline, and washing device secondary heavy out (50) is connected with washing device dispersed phase fluid inlet (38) by pipeline;

Back extraction device comprises back extraction device mixing tank A (59) and back extraction device phase splitting device A (60), back extraction device mulser A (67) and back extraction device phase splitting device B (68), back extraction device mixing tank A (59) is provided with back extraction device mixing tank A continuous phase fluid inlet (61), back extraction device mixing tank A dispersed phase fluid inlet (62) and back extraction device mixing tank A mixed phase fluid outlet (63), back extraction device phase splitting device A (60) is provided with back extraction device phase splitting device A mixed phase import (64), back extraction device phase splitting device A heavy out (66) and back extraction device phase splitting device A light phase export (65), back extraction device mixing tank A mixed phase fluid outlet (63) is connected with back extraction device phase splitting device A mixed phase import (64); Back extraction device mulser A (67) is provided with back extraction device mulser A import (69) and back extraction device mulser A outlet (70), back extraction device phase splitting device B (68) is provided with back extraction device phase splitting device B mixed phase import (71), back extraction device phase splitting device B heavy out (72) and back extraction device phase splitting device B light phase export (73), back extraction device mulser A import (69) is connected with back extraction device solvent inlet (75) with back extraction device phosphoric acid import (74), and back extraction device mulser A outlet (70) is connected with back extraction device phase splitting device B mixed phase import (71); Back extraction device phase splitting device B light phase export (65) is connected with back extraction device solvent inlet (75), and back extraction device mulser A outlet (70) is connected with back extraction device phase splitting device B mixed phase import (71); Back extraction device phase splitting device B heavy out (72) is connected with back extraction device mixing tank A dispersed phase fluid inlet (62).

2. phosphoric acid purification device as claimed in claim 1, it is characterized in that: comprise extraction plant mixing tank B (18) and extraction plant phase splitting device C (19), extraction plant mixing tank B (18) is provided with extraction plant mixing tank B continuous phase fluid inlet (20), extraction plant mixing tank B dispersed phase fluid inlet (21) and extraction plant mixing tank B mixed phase fluid outlet (22), extraction plant phase splitting device C (19) is provided with extraction plant phase splitting device C mixed phase import (23), extraction plant phase splitting device C heavy out (25) and extraction plant phase splitting device C light phase export (24), extraction plant mixing tank B mixed phase fluid outlet (22) is connected with extraction plant phase splitting device C mixed phase import (23); Extraction plant phase splitting device B light phase export (15) is connected with extraction plant mixing tank B continuous phase fluid inlet (20), extraction plant phase splitting device C heavy out (25) is connected with extraction plant phosphoric acid import (16), and extraction plant phase splitting device C light phase export (24) is connected with washing device mixing tank continuous phase fluid inlet (37);

Washing device comprises three grades of mixing tanks of washing device (51) and three grades of phase-splitting equipment of washing device (52), three grades of mixing tanks of washing device (51) are provided with three grades of continuous phase fluid inlets of washing device (53), washing device disperses phase fluid inlet (54) and three grades of mixed phase fluid outlets of washing device (55) for three grades, three grades of phase-splitting equipment of washing device (52) are provided with three grades of mixed phase imports of washing device (56), three grades of light phase exports of three grades of heavy outs of washing device (58) and washing device (57), three grades of mixed phase fluid outlets of washing device (55) are connected with three grades of mixed phase imports of washing device (56); Washing device secondary light phase export (49) is connected with three grades of continuous phase fluid inlets of washing device (53), three grades of heavy outs of washing device (58) are connected with washing device secondary dispersed phase fluid inlet (46), and three grades of light phase exports of washing device (57) are connected with back extraction device mixing A continuous phase fluid inlet (61);

Back extraction device comprises back extraction device mixing tank B (76) and back extraction device phase splitting device D (77), back extraction device mixing tank B (76) is provided with back extraction device mixing tank B continuous phase fluid inlet (78), back extraction device mixing tank B dispersed phase fluid inlet (79) and back extraction device mixing tank B mixed phase fluid outlet (80), back extraction device phase splitting device D (77) is provided with back extraction device phase splitting device D mixed phase import (81), back extraction device phase splitting device D heavy out (83) and back extraction device phase splitting device D light phase export (82), back extraction device mixing tank B mixed phase fluid outlet (80) is connected with back extraction device phase splitting device D mixed phase import (81); Back extraction device phase splitting device B light phase export (73) is connected with back extraction device mixing tank B continuous phase fluid inlet (78), back extraction device phase splitting device D heavy out (83) is connected with back extraction device phosphoric acid import (74), and back extraction device phase splitting device D light phase export (82) is connected with extraction plant mixing tank A continuous phase fluid inlet (3).

3. phosphoric acid purification device as claimed in claim 1, it is characterized in that: comprise extraction plant mulser B (26) and extraction plant phase splitting device D (27), extraction plant mulser B (26) is provided with extraction plant mulser B import (28) and extraction plant mulser B outlet (29), extraction plant phase splitting device D (27) is provided with extraction plant phase splitting device D mixed phase import (30), extraction plant phase splitting device D heavy out (31) and extraction plant phase splitting device D light phase export (32), extraction plant mulser B import (28) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of extraction plant (33) and extraction plant (34), and extraction plant mulser B outlet (29) is connected with extraction plant phase splitting device D mixed phase import (30); Extraction plant phase splitting device B light phase export (15) is connected with three grades of solvent inlets of extraction plant (34), extraction plant phase splitting device D heavy out (31) is connected with extraction plant phosphoric acid import (16), and extraction plant phase splitting device D light phase export (32) is connected with washing device mixing tank continuous phase fluid inlet (37);

Washing device comprises three grades of mixing tanks of washing device (51) and three grades of phase-splitting equipment of washing device (52), three grades of mixing tanks of washing device (51) are provided with three grades of continuous phase fluid inlets of washing device (53), washing device disperses phase fluid inlet (54) and three grades of mixed phase fluid outlets of washing device (55) for three grades, three grades of phase-splitting equipment of washing device (52) are provided with three grades of mixed phase imports of washing device (56), three grades of light phase exports of three grades of heavy outs of washing device (57) and washing device (58), three grades of mixed phase fluid outlets of washing device (55) are connected with three grades of mixed phase imports of washing device (56); Washing device secondary light phase export (49) is connected with three grades of continuous phase fluid inlets of washing device (53), three grades of heavy outs of washing device (58) are connected with washing device secondary dispersed phase fluid inlet (46), and three grades of light phase exports of washing device (57) are connected with back extraction device mixing A continuous phase fluid inlet (61);

Back extraction device comprises back extraction device mulser B (84) and back extraction device phase splitting device C (85), back extraction device mulser B (84) is provided with back extraction device mulser B import (86) and back extraction device mulser B outlet (87), back extraction device phase splitting device C (85) is provided with back extraction device phase splitting device C mixed phase import (88), back extraction device phase splitting device C heavy out (89) and back extraction device phase splitting device C light phase export (90), back extraction device mulser B import (86) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of back extraction device (91) and back extraction device (92), and back extraction device mulser B outlet (87) is connected with back extraction device phase splitting device C mixed phase import (88); Back extraction device phase splitting device B light phase export (73) is connected with three grades of solvent inlets of back extraction device (92), back extraction device phase splitting device C heavy out (89) is connected with back extraction device phosphoric acid import (74), and back extraction device phase splitting device C light phase export (90) is connected with extraction plant mixing tank A continuous phase fluid inlet (3).

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.