CN201850142U - Phosphoric acid purifying device - Google Patents

Abstract

The utility model discloses a phosphoric acid purifying device which comprises an extracting device, a washing device and a back extracting device, wherein the extracting device comprises a set of emulsifying machines and phase splitting equipment, or is additionally provided with one set or sets of emulsifying machines and phase splitting equipment on the basis of the current set of emulsifying machines and phase splitting equipment; the washing device takes a pulse column as mass transfer equipment; and the back extracting device comprises a set of mixers and phase splitting equipment, or is additionally provided with one set or sets of mixers and phase splitting equipment on the basis of the current set of mixers and phase splitting equipment. The first-stage solvent inlet of the extracting device is connected with the last-stage light phase outlet of the back extracting device, the load solvent inlet of a washing tower is connected with the last-stage light phase outlet of the extracting device, and the first-stage continues phase fluid inlet of the back extracting device is connected with the light phase outlet of the washing tower. The phosphoric acid purifying device has the advantages that the washing difficulty of the equipment can be reduced, the washing time is reduced, the mass transfer performance is strengthened, the purifying efficiency is improved, the equipment investment is reduced and the running cost is reduced.

Description

Phosphoric acid purification device

Technical field

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

Background technology

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

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

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

Mixing tank has important application in numerous hybrid reactions fields such as chemistry, chemical industry, petrochemical industry, medicine and food.This equipment mass transfer area is big, the reaction conversion ratio height; Cost of equipment is low, and is simple to operate; Regulate single passage width and parallel access volume and accomplish scale production, the device processes amount is big.Chinese patent publication number CN1807277A, disclosed on 02 22nd, 2006 " a kind of multi-channeled micro-structured reactor ", continuous phase fluid enters reactor from the inlet pipe 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 one-level light phase export is connected with the import of washing tower loaded solvent, the washing tower light phase export is connected with the import of back extraction device continuous phase fluid, and the back extraction device 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 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 fluid, 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 fluid;

Washing device is a washing tower, and washing tower is provided with the import of washing tower loaded solvent, the import of washing tower washing acid, washing tower light phase export, washing tower and washes the spent acid outlet;

Back extraction device comprises back extraction device one-level mixing tank and back extraction device one-level phase splitting device, back extraction device one-level mixing tank is provided with the import of back extraction device one-level continuous phase fluid, the dispersed phase fluid import of back extraction device one-level and the outlet of back extraction device one-level mixed phase fluid, back extraction device one-level phase splitting device is provided with the import of back extraction device one-level mixed phase fluid, back extraction device one-level heavy out and back extraction device one-level light phase export, and the outlet of back extraction device one-level mixed phase fluid is connected with the import of back extraction device one-level mixed phase fluid.

Above-mentioned phosphoric acid purification device, wherein: extraction plant comprises extraction plant secondary mulser and extraction plant secondary phase splitting device, 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 fluid, 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 fluid; Extraction plant one-level light phase export is connected with the import of extraction plant secondary solvent, and extraction plant secondary heavy out is connected with the import of extraction plant one-level phosphoric acid by pipeline, and extraction plant secondary light phase export is connected with the import of washing tower loaded solvent;

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

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 fluid 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 fluid imports of extraction plant; Three grades of solvent inlets of extraction plant secondary light phase export and extraction plant are connected, and three grades of heavy outs of extraction plant are connected with the import of extraction plant secondary phosphoric acid by pipeline, and three grades of light phase exports of extraction plant are connected with the import of washing tower loaded solvent;

Back extraction device comprises three grades of mixing tanks of back extraction device and three grades of phase-splitting equipment of back extraction device, three grades of mixing tanks of back extraction device are provided with three grades of continuous phase fluid import back extraction devices of back extraction device and connect three grades of dispersion phase fluid imports and three grades of mixed phase fluid outlets of back extraction device, three grades of phase-splitting equipment of back extraction device are provided with three grades of mixed phase fluid 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, and three grades of mixed phase fluid outlets of back extraction device are connected with three grades of mixed phase fluid imports of back extraction device; Three grades of continuous phase fluid imports 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 dispersed phase fluid, and three grades of light phase exports of back extraction device are connected with extraction plant one-level solvent inlet.

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

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

The utility model compared with prior art as can be known from the above technical solutions, requires difference according to purifying, and wherein: extraction plant comprises one group of mulser and phase splitting device, or increases one or more groups mulser and phase splitting device on aforesaid combination; Washing device selects for use pulse-column as mass transfer apparatus, and back extraction device comprises one group of mixing tank and phase splitting device, or increases one or more groups mixing tank and phase splitting device on aforesaid combination.In the phosphoric acid purification process, feed phosphoric acid (fresh phosphoric) adds by the import of extraction plant final stage phosphoric acid, and washing acid (purifying phosphoric acid) adds by the import of washing tower washing acid, and de-salted water adds by the import of back extraction device final stage dispersed phase fluid.The no-load solvent of extraction plant one-level solvent inlet is from the final stage light phase export of back extraction device, the loaded solvent of washing tower loaded solvent import is from extraction plant final stage light phase export, and the loaded solvent that the import of back extraction device one-level continuous phase fluid comes is from the light phase export of washing tower.Because mulser, mixing tank, pulse-column mass transfer area are big, the mass-transfer efficiency height selects for use mulser, mixing tank as mass transfer apparatus, and the dirty thing that extraction process produces cleans easily, and the equipment easy switching does not influence production.The mixed solution that comes out from mulser, mixing tank, pulse-column is easy to phase-splitting, thereby guarantees to divide phase effect.The purifying phosphoric acid foreign matter content that obtains is low, but by refining production food grade and electron-level phosphoric acid.Mulser, mixing tank cost are low, can save facility investment.

Description of drawings

Fig. 1 is embodiment 1 structural representation;

Fig. 2 is embodiment 2 structural representations;

Fig. 3 is embodiment 3 structural representations.

Mark among the figure:

1, extraction plant one-level mulser, 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 fluid, 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 import of extraction plant secondary solvent, 14, the import of extraction plant secondary phosphoric acid, 15, the outlet of extraction plant secondary mulser, 16, the import of extraction plant secondary mixed phase fluid, 17, extraction plant secondary light phase export, 18, extraction plant secondary heavy out, 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 solvent inlets of extraction plant, 23, three grades of phosphoric acid imports of extraction plant, 24, three grades of mulser outlets of extraction plant, 25, three grades of mixed phase fluid imports of extraction plant, 26, three grades of heavy outs of extraction plant, 27, three grades of light phase exports of extraction plant, 28, washing tower, 29, the import of washing tower loaded solvent, 30, the import of washing tower washing acid, 31, the washing tower light phase export, 32, washing tower is washed the spent acid outlet, 33, back extraction device one-level mixing tank, 34, back extraction device one-level phase splitting device, 35, the import of back extraction device one-level continuous phase fluid, 36, the import of back extraction device one-level dispersed phase fluid, 37, the outlet of back extraction device one-level mixed phase fluid, 38, the import of back extraction device one-level mixed phase fluid, 39, back extraction device one-level light phase export, 40, back extraction device one-level heavy out, 41, back extraction device secondary mixing tank, 42, back extraction device secondary phase splitting device, 43, the import of back extraction device secondary continuous phase fluid, 44, the import of back extraction device secondary dispersed phase fluid, 45, the outlet of back extraction device secondary mixed phase fluid, 46, the import of back extraction device secondary mixed phase fluid, 47, back extraction device secondary light phase export, 48, back extraction device secondary heavy out, 49, three grades of mixing tanks of back extraction device, 50, three grades of phase-splitting equipment of back extraction device, 51, three grades of continuous phase fluid imports of back extraction device, 52, back extraction device disperses the phase fluid import for three grades, 53, three grades of mixed phase fluid outlets of back extraction device, 54, three grades of mixed phase fluid imports of back extraction device, 55, three grades of light phase exports of back extraction device, 56, three grades of heavy outs 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: extraction plant one-level light phase export 7 is connected with washing tower loaded solvent import 29, washing tower light phase export 31 is connected with back extraction device continuous phase fluid import 35, and back extraction device light phase export 39 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 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 fluid 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 fluid import 5;

Washing device is a washing tower 28, and washing tower 28 is provided with washing tower loaded solvent import 29, washing tower washing acid import 30, washing tower light phase export 31, washing tower and washes spent acid outlet 32;

Back extraction device comprises back extraction device one-level mixing tank 33 and back extraction device one-level phase splitting device 34, back extraction device one-level mixing tank 33 is provided with back extraction device one-level continuous phase fluid import 35, back extraction device one-level dispersed phase fluid import 36 and back extraction device one-level mixed phase fluid outlet 37, back extraction device one-level phase splitting device 34 is provided with back extraction device one-level mixed phase fluid import 38, back extraction device one-level heavy out 40 and back extraction device one-level light phase export 39, and back extraction device one-level mixed phase fluid outlet 37 is connected with back extraction device one-level mixed phase fluid import 38.

During use, phosphoric acid enters extraction plant one-level mulser 1 from extraction plant one-level solvent inlet 9 by extraction plant one-level mulser import 3 from extraction plant one-level phosphoric acid import 8, extraction agent (from the no-load solvent of back extraction device one-level light phase export 39), 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 fluid import 5.In extraction plant one-level phase splitting device 2, realize the layering of mixed phase, light, the heavy two-phase that forms, phosphoric acid is extracted agent extraction to be become loaded solvent and enters washing device from extraction plant one-level light phase export 7, impurity in the phosphoric acid enters heavy phase becomes raffinate from 6 discharges of extraction plant one-level heavy out, thereby realizes extracting and separating.

At washing device, the loaded solvent that comes out from extraction plant one-level light phase export 7 enters washing tower loaded solvent import 29, and washing acid adds from washing tower washing acid import 30, and washing acid contacts with loaded solvent anti-phase in tower, fully mass transfer.In the loaded solvent with small amount of impurities enter heavy phase and sink to down the clarifying chamber, the spent acid of washing that has impurity leave standstill phase-splitting in clarifying chamber down after is washed spent acid outlet 32 and is discharged outside the towers from washing tower.Be washed the loaded solvent that has purified and rise to the clarifying chamber, come out to enter back extraction device from washing tower light phase export 31 at last.

At back extraction device, de-salted water is from back extraction device one-level dispersed phase fluid import 36, enter back extraction device one-level mixing tank 33 from the loaded solvent of washing device from back extraction device one-level continuous phase fluid import 35, loaded solvent and de-salted water are finished the efficient mass transfer process in back extraction device one-level mixing tank 33, the mixed phase that forms comes out from back extraction device one-level mixed phase fluid outlet 37, enters back extraction device one-level phase splitting device 34 by back extraction device one-level mixed phase fluid import 38.In back extraction device one-level phase splitting device 34, realize the layering of mixed phase, light, the heavy two-phase that forms, phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 40 discharges of back extraction device one-level heavy out, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and return extraction plant from back extraction device one-level light phase export 39, thereby realizes recycling of extraction agent.

Embodiment 2

Referring to Fig. 2, the extraction of employing secondary, 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 secondary mulser 10 and extraction plant secondary phase splitting device 11, extraction plant secondary mulser 10 is provided with extraction plant secondary mulser import 12 and extraction plant secondary mulser outlet 15, extraction plant secondary phase splitting device 11 is provided with extraction plant secondary mixed phase fluid import 16, extraction plant secondary heavy out 18 and extraction plant secondary light phase export 17, extraction plant secondary mulser import 12 is connected with extraction plant secondary phosphoric acid import 14 and extraction plant secondary solvent import 13, and extraction plant secondary mulser outlet 15 is connected with extraction plant secondary mixed phase fluid import 16; Extraction plant one-level light phase export 7 is connected with extraction plant secondary solvent import 13, and extraction plant secondary heavy out 18 is connected with extraction plant one-level phosphoric acid import 8 by pipeline, and extraction plant secondary light phase export 17 is connected with washing tower loaded solvent import 29;

Washing device such as embodiment 1.

Back extraction device comprises back extraction device secondary mixing tank 41 and back extraction device secondary phase splitting device 42, back extraction device secondary mixing tank 41 is provided with back extraction device secondary continuous phase fluid import 43, back extraction device connects secondary dispersed phase fluid import 44 and back extraction device secondary mixed phase fluid outlet 45, back extraction device secondary phase splitting device 42 is provided with back extraction device secondary mixed phase fluid import 46, back extraction device secondary heavy out 48 and back extraction device secondary light phase export 47, and back extraction device secondary mixed phase fluid outlet 45 is connected with back extraction device secondary mixed phase fluid import 46; Back extraction device one-level light phase export 39 is connected with back extraction device secondary continuous phase fluid import 43; Back extraction device secondary heavy out 48 is connected with back extraction device one-level dispersed phase fluid import 36, and back extraction device secondary light phase export 47 is connected with extraction plant one-level solvent inlet 9.

All the other are with embodiment 1.

During use, the phosphoric acid that extraction plant secondary heavy out 18 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 47) 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 fluid 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 13 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 14 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 15, enter extraction plant secondary phase splitting device 11 by extraction plant secondary mixed phase fluid import 16, 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 17, heavy phase is then returned extraction plant one-level mulser 1 by extraction plant secondary heavy out 18, thereby realizes extracting and separating.

At washing device, with embodiment 1.

At back extraction device, the phosphoric acid that back extraction device back extraction device secondary heavy out 48 comes out, the loaded solvent that return back extraction device one-level dispersed phase fluid import 36 under the effect of pump, comes from washing device enters back extraction device one-level mixing tank 33 from back extraction device one-level continuous phase fluid import 35, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device one-level mixing tank 33, the mixed phase that forms comes out from back extraction device one-level mixed phase fluid outlet 37, enters back extraction device one-level phase splitting device 34 by back extraction device one-level mixed phase fluid import 38.In back extraction device one-level phase splitting device 34, 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 40 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 39, enters back extraction device secondary mixing tank 41 through back extraction device secondary continuous phase fluid import 43 under the effect of pump.De-salted water enters back extraction device secondary mixing tank 41 through back extraction device secondary dispersed phase fluid import 44, efficient mass transfer effect by back extraction device secondary mixing tank 41, further improve the back extraction effect of loaded solvent, the mixed phase that forms comes out from back extraction device secondary mixed phase fluid outlet 45, enter back extraction device secondary phase splitting device 42 by back extraction device secondary mixed phase fluid import 46, in back extraction device secondary phase splitting device 42, 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 47, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device one-level mixing tank 33 by back extraction device secondary heavy out 48.

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, 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 24 of extraction plant, three grades of phase-splitting equipment 20 of extraction plant are provided with three grades of mixed phase fluid imports 25 of extraction plant, three grades of heavy outs 26 of extraction plant and three grades of light phase exports 27 of extraction plant, three grades of phosphoric acid imports 23 of three grades of mulser imports 21 of extraction plant and extraction plant and three grades of solvent inlets 22 of extraction plant are connected, and three grades of mulsers of extraction plant outlet 24 is connected with three grades of mixed phase fluid imports 25 of extraction plant; Three grades of solvent inlets 22 of extraction plant secondary light phase export 17 and extraction plant are connected, three grades of heavy outs 26 of extraction plant are connected with extraction plant secondary phosphoric acid import 14 by pipeline, and three grades of light phase exports 27 of extraction plant are connected with washing tower loaded solvent import 29;

Washing device such as embodiment 1.

Back extraction device comprises three grades of mixing tanks 49 of back extraction device and three grades of phase-splitting equipment 50 of back extraction device, three grades of mixing tanks 49 of back extraction device are provided with three grades of continuous phase fluid import 51 back extraction devices of back extraction device and connect three grades of dispersion phase fluid imports 52 and three grades of mixed phase fluid outlets 53 of back extraction device, three grades of phase-splitting equipment 50 of back extraction device are provided with three grades of mixed phase fluid imports 54 of back extraction device, three grades of heavy outs 56 of back extraction device and three grades of light phase exports 55 of back extraction device, and three grades of mixed phase fluid of back extraction device outlet 53 is connected with three grades of mixed phase fluid imports 54 of back extraction device; Three grades of continuous phase fluid imports 51 of back extraction device secondary light phase export 47 and back extraction device are connected, three grades of heavy outs 56 of back extraction device are connected with back extraction device secondary dispersed phase fluid import 44, and three grades of light phase exports 55 of back extraction device are connected with extraction plant one-level solvent inlet 9.

During use, the phosphoric acid that three grades of heavy outs 26 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 17, under the effect of pump, enter three grades of mulsers 19 of extraction plant through three grades of phosphoric acid imports 23 of extraction plant by three grades of mulser imports 21 of extraction plant through three grades of solvent inlets 22 of extraction plant, feed phosphoric acid (fresh phosphoric), efficient mass transfer effect by three grades of mulsers has improved the phosphoric acid extraction rate as much as possible; The mixed phase that forms comes out from three grades of mulser outlets 24 of extraction plant, enter three grades of phase-splitting equipment 20 of extraction plant by three grades of mixed phase fluid imports 25 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 27, heavy phase is then returned extraction plant secondary mulser 10 by three grades of heavy outs 26 of extraction plant, thereby realizes extracting and separating.All the other principles are with embodiment 1.

At washing device, with embodiment 1.

At back extraction device, the phosphoric acid that back extraction device secondary heavy out 48 comes out, the loaded solvent that return back extraction device one-level dispersed phase fluid import 36 under the effect of pump, comes from washing device enters back extraction device one-level mixing tank 33 from back extraction device one-level continuous phase fluid import 35, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device one-level mixing tank 33, the mixed phase that forms comes out from back extraction device one-level mixed phase fluid outlet 37, enters back extraction device one-level phase splitting device 34 by back extraction device one-level mixed phase fluid import 38.In back extraction device one-level phase splitting device 34, 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 40 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 39, enters back extraction device secondary mixing tank 41 through back extraction device secondary continuous phase fluid import 43 under the effect of pump.The phosphoric acid that three grades of heavy outs 56 of back extraction device come out, under the effect of pump, return back extraction device secondary mixing tank 41, efficient mass transfer effect by back extraction device secondary mixing tank 41, the mixed phase that forms comes out from back extraction device secondary mixed phase fluid outlet 45, enter back extraction device secondary phase splitting device 42 by back extraction device secondary mixed phase fluid import 46, in back extraction device secondary phase splitting device 42, realize the layering of mixed phase, what form is light, heavy two-phase, the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device one-level mixing tank 33 by back extraction device secondary heavy out 48.The loaded solvent that also contains part phosphoric acid comes out from back extraction device secondary light phase export 47, under the effect of pump, disperse phase fluid import 52 to enter three grades of mixing tanks 49 of back extraction device through three grades of back extraction devices through three grades of continuous phase fluid imports 51 of back extraction device, de-salted water, by the efficient mass transfer effect of three grades of back extraction device mixing tanks, improved phosphoric acid back extraction effect as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 53 of back extraction device, enter three grades of phase-splitting equipment 50 of back extraction device by three grades of mixed phase fluid imports 54 of back extraction device, in three grades of phase-splitting equipment 50 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 55, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device secondary mixing tank 41 by three grades of heavy outs 56 of back extraction device.

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

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

Claims (5)

1. phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant one-level light phase export (7) is connected with washing tower loaded solvent import (29), washing tower light phase export (31) is connected with back extraction device continuous phase fluid import (35), and back extraction device light phase export (39) 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 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 fluid 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 fluid import (5);

Washing device is washing tower (28), and washing tower (28) is provided with washing tower loaded solvent import (29), washing tower washing acid import (30), washing tower light phase export (31), washing tower and washes spent acid outlet (32);

Back extraction device comprises back extraction device one-level mixing tank (33) and back extraction device one-level phase splitting device (34), back extraction device one-level mixing tank (33) is provided with back extraction device one-level continuous phase fluid import (35), back extraction device one-level dispersed phase fluid import (36) and back extraction device one-level mixed phase fluid outlet (37), back extraction device one-level phase splitting device (34) is provided with back extraction device one-level mixed phase fluid import (38), back extraction device one-level heavy out (40) and back extraction device one-level light phase export (39), back extraction device one-level mixed phase fluid outlet (37) is connected with back extraction device one-level mixed phase fluid import (38).

2. phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises extraction plant secondary mulser (10) and extraction plant secondary phase splitting device (11), extraction plant secondary mulser (10) is provided with extraction plant secondary mulser import (12) and extraction plant secondary mulser outlet (15), extraction plant secondary phase splitting device (11) is provided with extraction plant secondary mixed phase fluid import (16), extraction plant secondary heavy out (18) and extraction plant secondary light phase export (17), extraction plant secondary mulser import (12) is connected with extraction plant secondary phosphoric acid import (14) and extraction plant secondary solvent import (13), and extraction plant secondary mulser outlet (15) is connected with extraction plant secondary mixed phase fluid import (16); Extraction plant one-level light phase export (7) is connected with extraction plant secondary solvent import (13), extraction plant secondary heavy out (18) is connected with extraction plant one-level phosphoric acid import (8) by pipeline, and extraction plant secondary light phase export (17) is connected with washing tower loaded solvent import (29);

Back extraction device comprises back extraction device secondary mixing tank (41) and back extraction device secondary phase splitting device (42), back extraction device secondary mixing tank (41) is provided with back extraction device secondary continuous phase fluid import (43), back extraction device connects secondary dispersed phase fluid import (44) and back extraction device secondary mixed phase fluid outlet (45), back extraction device secondary phase splitting device (42) is provided with back extraction device secondary mixed phase fluid import (46), back extraction device secondary heavy out (48) and back extraction device secondary light phase export (47), back extraction device secondary mixed phase fluid outlet (45) is connected with back extraction device secondary mixed phase fluid import (46); Back extraction device one-level light phase export (39) is connected with back extraction device secondary continuous phase fluid import (43); Back extraction device secondary heavy out (48) is connected with back extraction device one-level dispersed phase fluid import (36), and back extraction device secondary light phase export (47) is 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 (24), three grades of phase-splitting equipment of extraction plant (20) are provided with three grades of mixed phase fluid imports of extraction plant (25), three grades of light phase exports of three grades of heavy outs of extraction plant (26) and extraction plant (27), three grades of mulser imports of extraction plant (21) are connected with three grades of phosphoric acid imports of extraction plant (23) and three grades of solvent inlets of extraction plant (22), and three grades of mulser outlets of extraction plant (24) are connected with three grades of mixed phase fluid imports of extraction plant (25); Extraction plant secondary light phase export (17) is connected with three grades of solvent inlets of extraction plant (22), three grades of heavy outs of extraction plant (26) are connected with extraction plant secondary phosphoric acid import (14) by pipeline, and three grades of light phase exports of extraction plant (27) are connected with washing tower loaded solvent import (29);

Back extraction device comprises three grades of mixing tanks of back extraction device (49) and three grades of phase-splitting equipment of back extraction device (50), three grades of mixing tanks of back extraction device (49) are provided with three grades of continuous phase fluid imports of back extraction device (51) back extraction device and connect three grades of dispersion phase fluid imports (52) and three grades of mixed phase fluid outlets of back extraction device (53), three grades of phase-splitting equipment of back extraction device (50) are provided with three grades of mixed phase fluid imports of back extraction device (54), three grades of light phase exports of three grades of heavy outs of back extraction device (56) and back extraction device (55), three grades of mixed phase fluid outlets of back extraction device (53) are connected with three grades of mixed phase fluid imports of back extraction device (54); Back extraction device secondary light phase export (47) is connected with three grades of continuous phase fluid imports of back extraction device (51), three grades of heavy outs of back extraction device (56) are connected with back extraction device secondary dispersed phase fluid import (44), and three grades of light phase exports of back extraction device (55) are connected with extraction plant one-level solvent inlet (9).

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

5. as the described phosphoric acid purification device of one of claim 1-3, wherein: mulser is the pipeline high-shearing dispersion emulsifying machine.

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