CN201864569U

CN201864569U - Phosphoric acid purifying device

Info

Publication number: CN201864569U
Application number: CN2010206241564U
Authority: CN
Inventors: 王邵东; 李红林; 王权顶; 吕阳成
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2010-11-25
Filing date: 2010-11-25
Publication date: 2011-06-15
Anticipated expiration: 2020-11-25

Abstract

The utility model discloses a phosphoric acid purifying device, which comprises an extraction device, a washing device and a reextraction device. The extraction device adopts a combination of two stages of emulsion machines and phase splitting equipment or is additionally provided with a combination of one or a plurality of emulsion machines and phase splitting equipment, the washing device adopts a combination of an emulsion machine and phase splitting equipment and a combination of a mixer and phase splitting equipment or is additionally provided with one or a plurality of mixers and phase splitting equipment (or emulsion machines and phase splitting equipment), and the reextraction device adopts a pulsed column. A first-stage solvent inlet of the extraction device is connected with a light-phase outlet of the reextraction tower, a first-stage solvent inlet of the washing device is connected with a tail-stage light-phase outlet of the extraction device, and a light-phase inlet of the reextraction tower is connected with a tail-stage light-phase outlet of the washing device. The phosphoric acid purifying device can strengthen mass transfer property, increases purifying efficiency, decreases equipment investment and operation cost, and is small in occupied area.

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

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

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 CN1658807A, 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.

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.Mixing tank is widely used in fine chemistry industry at present: resin emulsification, silicone oil emulsification, carbon black dispersion, fillers dispersed etc.; Be applied to petrochemical complex: heavy oil emulsive, emulsified bitumen, wax emulsification etc.; Biological medicine: microcapsule emulsification, medicine emulsion, cell tissue fragmentation etc.

Summary of the invention

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

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

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

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

Back extraction device comprises the back extraction tower, and the back extraction tower is provided with the light phase import of back extraction tower, the import of back extraction tower de-salted water, back extraction tower light phase export, back extraction tower back extraction acid outlet.

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

Washing device comprises washing device mixing tank B and washing device phase splitting device C, washing device mixing tank B is provided with the import of washing device mixing tank B continuous phase fluid, washing device mixing tank B dispersed phase fluid import and the outlet of washing device mixing tank B mixed phase fluid, washing device phase splitting device C is provided with the import of washing device phase splitting device C mixed phase, washing device phase splitting device C light phase export and washing device phase splitting device C heavy out, and the outlet of washing device mixing tank B mixed phase fluid is connected with the import of washing device phase splitting device C mixed phase; Washing device phase splitting device B light phase export is connected with the import of washing device mixing tank B continuous phase fluid, washing device phase splitting device C heavy out is connected with the import of washing device mixing tank A dispersed phase fluid, and washing device phase splitting device C light phase export connects with the light import mutually of back extraction tower.

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

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

Above-mentioned phosphoric acid purification device, wherein: mulser is the pipeline high-shearing dispersion emulsifying machine.

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

Description of drawings

Fig. 1 is embodiment 1 structural representation;

Fig. 2 is embodiment 2 structural representations;

Fig. 3 is embodiment 3 structural representations.

Mark among the figure:

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

Embodiment

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

Embodiment 1

Referring to Fig. 1, adopt the phosphoric acid purification device of two-stage extraction, washing, comprise extraction plant, washing device and back extraction device, wherein: extraction plant secondary light phase export 16 is connected with washing device one-level solvent inlet 36, washing device phase splitting device B light phase export 43 connects with the light import mutually 64 of back extraction tower, and back extraction tower light phase export 65 is connected with extraction plant one-level solvent inlet 9;

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

Washing device comprises washing device mulser A28 and washing device phase splitting device A29, washing device mixing tank A37 and washing device phase splitting device B38, washing device mulser A28 is provided with washing device mulser A import 30, washing device mulser A outlet 31, washing device phase splitting device A29 is provided with washing device phase splitting device A mixed phase import 32, washing device phase splitting device A heavy out 33 and washing device phase splitting device A light phase export 34, washing device mulser A import 30 is connected with washing device one-level solvent inlet 36 with washing device one-level phosphoric acid import 35, and washing device mulser A outlet 31 is connected with washing device phase splitting device A mixed phase import 32; Washing device mixing tank A37 is provided with washing device mixing tank A continuous phase fluid import 39, washing device mixing tank A dispersed phase fluid import 40 and washing device mixing tank A mixed phase fluid outlet 41, washing device phase splitting device B38 is provided with washing device phase splitting device B mixed phase import 42, washing device phase splitting device B light phase export 43 and washing device phase splitting device B heavy out 44, and washing device mixing tank A mixed phase fluid outlet 41 is connected with washing device phase splitting device B mixed phase import 42; Washing device phase splitting device A light phase export 34 is connected with washing device mixing tank A continuous phase fluid import 39, and washing device phase splitting device B heavy out 44 is connected with washing device one-level phosphoric acid import 35.

Back extraction device comprises back extraction tower 62, and back extraction tower 62 is provided with the light phase import 64 of back extraction tower, back extraction tower de-salted water import 63, back extraction tower light phase export 65, back extraction tower back extraction acid outlet 66.

During use: at extraction plant, the phosphoric acid that extraction plant secondary heavy out 15 comes out, under the effect of pump from extraction plant one-level phosphoric acid import 8, extraction agent (from the no-load solvent of back extraction device secondary light phase export 65) enters extraction plant one-level mulser 1 from extraction plant one-level solvent inlet 9 by extraction plant one-level mulser import 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant one-level mulser 1, the mixed phase that forms comes out from extraction plant one-level mulser outlet 4, enters extraction plant one-level phase splitting device 2 by extraction plant one-level mixed phase import 5; In extraction plant one-level phase splitting device 2, realize the layering of mixed phase, form light, heavy two-phase; Impurity in the phosphoric acid enters heavy phase becomes raffinate from 6 discharges of extraction plant one-level heavy out; Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant one-level light phase export 7, enters extraction plant secondary mulser 10 through extraction plant secondary solvent import 18 by extraction plant secondary mulser import 12 under the effect of pump; Feed phosphoric acid (fresh phosphoric) enters extraction plant secondary mulser 10 through extraction plant secondary phosphoric acid import 17 by extraction plant secondary mulser import 12, efficient mass transfer effect by extraction plant secondary mulser 10, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant secondary mulser outlet 13, enter extraction plant secondary phase splitting device 11 by extraction plant secondary mixed phase import 14, in extraction plant secondary phase splitting device 11, realize the layering of mixed phase, form light, heavy two-phase, most of phosphoric acid is extracted the agent extraction and enters and gently form loaded solvent mutually and enter washing device from extraction plant secondary light phase export 16, heavy phase is then returned extraction plant one-level mulser 1 by extraction plant secondary heavy out 15, thereby realizes extracting and separating.

At washing device, the phosphoric acid that comes out from washing device phase splitting device B heavy out 44 under the effect of pump from washing device mulser A phosphoric acid import 35, loaded solvent from extraction plant secondary light phase export 16 all enters washing device mulser A28 by washing device mulser A import 30 from washing device one-level solvent inlet 36, loaded solvent and washing acid are finished the efficient mass transfer process in washing device mulser A28, the mixed phase that forms comes out from washing device mulser A outlet 31, enters washing device phase splitting device A29 by washing device phase splitting device A mixed phase import 32; In washing device phase splitting device A29, realize the layering of mixed phase, light, the heavy two-phase of formation; Impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 33, loaded solvent comes out from washing device phase splitting device A light phase export 34, enters washing device mixing tank A37 through washing device mixing tank A continuous phase fluid import 39 under the effect of pump; Purifying phosphoric acid enters washing device mixing tank A37 through washing device mixing tank A dispersed phase fluid import 40, efficient mass transfer effect by washing device mixing tank A37, further improve washing effect, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 41, enter washing device phase splitting device B38 by washing device phase splitting device B mixed phase import 42, in washing device phase splitting device B38, realize the layering of mixed phase, what form is light, heavy two-phase, heavy phase is then returned washing device mulser A28 by washing device phase splitting device B heavy out 44, loaded solvent enters the light phase import 64 of back extraction tower from washing device phase splitting device B light phase export 43 after being cleaned phosphoric acid washing, realizes washing, purifying.

At back extraction device, the loaded solvent that comes out from washing device final stage phase splitting device light phase export enters the negative light phase import 64 of back extraction tower, and de-salted water adds from back extraction tower de-salted water import 63, and de-salted water contacts with loaded solvent anti-phase in tower, fully mass transfer.Phosphoric acid in the loaded solvent enters heavy phase and sinks to down the clarifying chamber, in following clarifying chamber, leave standstill phase-splitting after back extraction acid discharge outside the towers from back extraction tower back extraction acid outlet 66.Be desalted loaded solvent after the water back extraction and become no-load solvent and rise to the clarifying chamber, return extraction plant from back extraction tower light phase export 65 at last.Realize the recycle of extraction agent.

Embodiment 2

Referring to Fig. 2, adopt three grades of extractions, the phosphoric acid purification device of washing, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises three grades of mulsers 19 of extraction plant and three grades of phase-splitting equipment 20 of extraction plant, three grades of mulsers 19 of extraction plant are provided with three grades of mulser imports 21 of extraction plant and three grades of mulser outlets 22 of extraction plant, three grades of phase-splitting equipment 20 of extraction plant are provided with three grades of mixed phase imports 23 of extraction plant, three grades of heavy outs 24 of extraction plant and three grades of light phase exports 25 of extraction plant, three grades of phosphoric acid imports 26 of three grades of mulser imports 21 of extraction plant and extraction plant and three grades of solvent inlets 27 of extraction plant are connected, and three grades of mulsers of extraction plant outlet 22 is connected with three grades of phase-splitting equipment of extraction plant mixed phase import 23; Three grades of solvent inlets 27 of extraction plant secondary light phase export 16 and extraction plant are connected, three grades of heavy outs 24 of extraction plant, be connected with extraction plant secondary phosphoric acid import 17, three grades of phase-splitting equipment of extraction plant light phase export 25 is connected with washing device one-level solvent inlet 36;

Washing device comprises washing device mixing tank B45 and washing device phase splitting device C46, washing device mixing tank B45 is provided with washing device mixing tank B continuous phase fluid import 47, washing device mixing tank B dispersed phase fluid import 48 and washing device mixing tank B mixed phase fluid outlet 49, washing device phase splitting device C46 is provided with washing device phase splitting device C mixed phase import 50, washing device phase splitting device C light phase export 51 and washing device phase splitting device C heavy out 52, washing device mixing tank B mixed phase fluid outlet 49 are connected with washing device phase splitting device C mixed phase import 50; Washing device phase splitting device B light phase export 43 is connected with washing device mixing tank B continuous phase fluid import 47, washing device phase splitting device C heavy out 52 is connected with washing device mixing tank A dispersed phase fluid import 40, and washing device phase splitting device C light phase export 51 connects with the light import mutually 64 of back extraction tower.

Back extraction device is with embodiment 1.

During use, at extraction plant, the phosphoric acid that extraction plant secondary heavy out 15 comes out, under the effect of pump from extraction plant one-level phosphoric acid import 8, extraction agent (from the no-load solvent of back extraction device secondary light phase export 65) enters extraction plant one-level mulser 1 from extraction plant one-level solvent inlet 9 by extraction plant one-level mulser import 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in extraction plant one-level mulser 1, the mixed phase that forms comes out from extraction plant one-level mulser outlet 4, enters extraction plant one-level phase splitting device 2 by extraction plant one-level mixed phase import 5; In extraction plant one-level phase splitting device 2, realize the layering of mixed phase, form light, heavy two-phase; Impurity in the phosphoric acid enters heavy phase becomes raffinate from 6 discharges of extraction plant one-level heavy out; Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant one-level light phase export 7, enters extraction plant secondary mulser 10 through extraction plant secondary solvent import 18 by extraction plant secondary mulser import 12 under the effect of pump; Feed phosphoric acid enters extraction plant secondary mulser 10 through extraction plant secondary phosphoric acid import 17 by extraction plant secondary mulser import 12, efficient mass transfer effect by extraction plant secondary mulser 10, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant secondary mulser outlet 13, enter extraction plant secondary phase splitting device 11 by extraction plant secondary mixed phase import 14, in extraction plant secondary phase splitting device 11, realize the layering of mixed phase, what form is light, heavy two-phase, impurity in the phosphoric acid enters heavy phase, come out from heavy out 15, in the effect extraction plant one-level phosphoric acid import next time 8 of pump, most of phosphoric acid is extracted agent extraction and enters and gently form loaded solvent mutually and enter three grades of mulsers 19 of extraction plant from extraction plant secondary light phase export 16 by three grades of mulser imports 27 of extraction plant; Feed phosphoric acid (fresh phosphoric) enters three grades of mulsers 19 of extraction plant through three grades of phosphoric acid imports 26 of extraction plant by three grades of mulser imports 21 of extraction plant, efficient mass transfer effect by three grades of mulsers 19 of extraction plant, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from three grades of mulser outlets 22 of extraction plant, enter three grades of phase-splitting equipment 20 of extraction plant by three grades of mixed phase imports 23 of extraction plant, in three grades of phase-splitting equipment 20 of extraction plant, realize the layering of mixed phase, form 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 three grades of light phase exports 25 of extraction plant, heavy phase is then returned extraction plant secondary mulser 10 by three grades of heavy outs 24 of extraction plant, thereby realizes extracting and separating.

At washing device, the loaded solvent that comes out from washing device phase splitting device B light phase export 43, enter washing device mixing tank B45 through washing device mixing tank B continuous phase fluid import 47 under the effect of pump, washing acid (purifying phosphoric acid) enters washing device mixing tank B45 through washing device mixing tank B dispersed phase fluid import 48; The mixed phase that forms comes out from washing device mixing tank B mixed phase fluid outlet 49, enter washing device phase splitting device C46 by washing device phase splitting device C mixed phase import 50, in washing device phase splitting device C46, realize the layering of mixed phase, form light, heavy two-phase, loaded solvent comes out to enter back extraction device from washing device phase splitting device C light phase export 51 after being washed pickling impurity removal matter; Heavy phase is then come out by washing device phase splitting device C heavy out 52, returns washing device mixing tank A37 by washing device mixing tank A dispersed phase fluid import 40 under the effect of pump; Loaded solvent comes out from the light phase export 34 of washing device phase splitting device A, under the effect of pump, enter washing device mixing tank A37 through washing device mixing tank A continuous phase fluid import 39, efficient mass transfer effect by washing device mixing tank A37, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 41, enter washing device phase splitting device B38 by washing device phase splitting device B mixed phase import 41, in washing device phase splitting device B38, realize the layering of mixed phase, form light, heavy two-phase, loaded solvent enters washing device mixing tank B from washing device phase splitting device B light phase export 43, heavy phase then by washing device phase splitting device B heavy out 44 under the effect of pump from washing device mulser A phosphoric acid import 35, loaded solvent all enters washing device mulser A by washing device mulser A import 30 from washing device one-level solvent inlet 36, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mulser A, the mixed phase that forms comes out from washing device mulser A outlet 31, enters washing device phase splitting device A by mixed phase import 32; In washing device phase splitting device A, realize the layering of mixed phase, light, the heavy two-phase of formation; The impurity of loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 33, and loaded solvent comes out to enter washing device mixing tank A37 from light phase export 34.

Back extraction device is with embodiment 1.

Embodiment 3

Referring to Fig. 3, adopt three grades of extractions, the phosphoric acid purification device of washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant comprises three grades of mulsers 19 of extraction plant and three grades of phase-splitting equipment 20 of extraction plant, three grades of mulsers 19 of extraction plant are provided with three grades of mulser imports 21 of extraction plant and three grades of mulser outlets 22 of extraction plant, three grades of phase-splitting equipment 20 of extraction plant are provided with three grades of mixed phase imports 23 of extraction plant, three grades of heavy outs 24 of extraction plant and three grades of light phase exports 25 of extraction plant, three grades of phosphoric acid imports 26 of three grades of mulser imports 21 of extraction plant and extraction plant and three grades of solvent inlets 27 of extraction plant are connected, and three grades of mulsers of extraction plant outlet 22 is connected with three grades of phase-splitting equipment of extraction plant mixed phase import 23; Three grades of solvent inlets 27 of extraction plant secondary light phase export 16 and extraction plant are connected, three grades of heavy outs 24 of extraction plant, be connected with extraction plant secondary phosphoric acid import 17, three grades of phase-splitting equipment of extraction plant light phase export 25 is connected with washing device one-level solvent inlet 36;

Washing device comprises washing device mulser B53 and washing device phase splitting device D54, washing device mulser B53 is provided with washing device mulser B import 55, washing device mulser B outlet 56, washing device phase splitting device D54 is provided with washing device phase splitting device D mixed phase import 59, washing device phase splitting device D heavy out 61 and washing device phase splitting device D light phase export 60, three grades of phosphoric acid imports 57 of washing device mulser B import 55 and washing device are connected with three grades of solvent inlets 58 of washing device, and washing device mulser B outlet 56 is connected with washing device phase splitting device D mixed phase import 59; Washing device phase splitting device B light phase export 43 is connected with washing device mulser B solvent inlet 58, washing device phase splitting device D heavy out 61 is connected with washing device mixing tank A dispersed phase fluid import 40, and washing device phase splitting device D light phase export 60 connects with the light import mutually 64 of back extraction tower.

Back extraction device is with embodiment 1.

During use, at extraction plant, with embodiment 2.

At washing device, the phosphoric acid that washing device phase splitting device D heavy out 61 comes out returns washing device mixing tank A under the effect of pump; Loaded solvent from washing device phase splitting device B light phase export 43 come out, under the effect of pump through washing device mulser B solvent inlet 58, washing acid (purifying phosphoric acid) enters washing device mulser B53 through washing device mulser B phosphoric acid import 57 by washing device mulser B import 55; The mixed phase that forms comes out from washing device mulser B outlet 56, enter washing device phase splitting device D54 by washing device phase splitting device D mixed phase import 59, in washing device phase splitting device D54, realize the layering of mixed phase, form light, heavy two-phase, loaded solvent comes out to enter back extraction device from washing device phase splitting device D light phase export 60 after being washed pickling impurity removal matter; Heavy phase is then returned washing device mixing tank A37 by washing device phase splitting device D heavy out 61, the loaded solvent that enters with washing device mixing tank A continuous phase fluid import 39, efficient mass transfer effect by washing device mixing tank A37, the mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 41, enter washing device phase splitting device B38 by washing device phase splitting device B mixed phase import 42, in washing device phase splitting device B38, realize the layering of mixed phase, form light, heavy two-phase, loaded solvent enters washing device mulser B53 from washing device phase splitting device B light phase export 43, heavy phase is then returned washing device mulser A28 by washing device phase splitting device B heavy out 44, under the effect of pump from washing device mulser A phosphoric acid import 35, loaded solvent from extraction plant all enters washing device mulser A28 by washing device mulser A import 30 from washing device one-level solvent inlet 36, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device mulser A28, the mixed phase that forms comes out from washing device mulser A outlet 31, enters washing device phase splitting device A29 by washing device phase splitting device A mixed phase import 32; In washing device phase splitting device A29, realize the layering of mixed phase, light, the heavy two-phase of formation; The impurity of loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device phase splitting device A heavy out 33; Loaded solvent comes out from washing device phase splitting device A light phase export 34, enters washing device mixing tank A37 through washing device mixing tank A continuous phase fluid import 39 under the effect of pump.

At back extraction device, with embodiment 1.

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

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

Claims

1. phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant secondary light phase export (16) is connected with washing device one-level solvent inlet (36), washing device phase splitting device B light phase export (43) connects with the light import mutually of back extraction tower (64), and back extraction tower light phase export (65) is connected with extraction plant one-level solvent inlet (9);

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

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

Back extraction device comprises back extraction tower (62), and back extraction tower (62) is provided with the light phase import of back extraction tower (64), back extraction tower de-salted water import (63), back extraction tower light phase export (65), back extraction tower back extraction acid outlet (66).

2. phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises three grades of mulsers of extraction plant (19) and three grades of phase-splitting equipment of extraction plant (20), three grades of mulsers of extraction plant (19) are provided with three grades of mulser imports of extraction plant (21) and three grades of mulser outlets of extraction plant (22), three grades of phase-splitting equipment of extraction plant (20) are provided with three grades of mixed phase imports of extraction plant (23), three grades of light phase exports of three grades of heavy outs of extraction plant (24) and extraction plant (25), three grades of mulser imports of extraction plant (21) are connected with three grades of phosphoric acid imports of extraction plant (26) and three grades of solvent inlets of extraction plant (27), and three grades of mulser outlet (22) and extraction plant three grades of phase-splitting equipment mixed phase imports of extraction plant (23) are connected; Extraction plant secondary light phase export (16) is connected with three grades of solvent inlets of extraction plant (27), three grades of heavy outs of extraction plant (24), be connected with extraction plant secondary phosphoric acid import (17), three grades of phase-splitting equipment of extraction plant light phase export (25) is connected with washing device one-level solvent inlet (36);

Washing device comprises washing device mixing tank B (45) and washing device phase splitting device C (46), washing device mixing tank B (45) is provided with washing device mixing tank B continuous phase fluid import (47), washing device mixing tank B dispersed phase fluid import (48) and washing device mixing tank B mixed phase fluid outlet (49), washing device phase splitting device C (46) is provided with washing device phase splitting device C mixed phase import (50), washing device phase splitting device C light phase export (51) and washing device phase splitting device C heavy out (52), washing device mixing tank B mixed phase fluid outlet (49) is connected with washing device phase splitting device C mixed phase import (50); Washing device phase splitting device B light phase export (43) is connected with washing device mixing tank B continuous phase fluid import (47), washing device phase splitting device C heavy out (52) is connected with washing device mixing tank A dispersed phase fluid import (40), and washing device phase splitting device C light phase export (51) connects with the light import mutually of back extraction tower (64).

3. phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises three grades of mulsers of extraction plant (19) and three grades of phase-splitting equipment of extraction plant (20), three grades of mulsers of extraction plant (19) are provided with three grades of mulser imports of extraction plant (21) and three grades of mulser outlets of extraction plant (22), three grades of phase-splitting equipment of extraction plant (20) are provided with three grades of mixed phase imports of extraction plant (23), three grades of light phase exports of three grades of heavy outs of extraction plant (24) and extraction plant (25), three grades of mulser imports of extraction plant (21) are connected with three grades of phosphoric acid imports of extraction plant (26) and three grades of solvent inlets of extraction plant (27), and three grades of mulser outlet (22) and extraction plant three grades of phase-splitting equipment mixed phase imports of extraction plant (23) are connected; Extraction plant secondary light phase export (16) is connected with three grades of solvent inlets of extraction plant (27), three grades of heavy outs of extraction plant (24), be connected with extraction plant secondary phosphoric acid import (17), three grades of phase-splitting equipment of extraction plant light phase export (25) is connected with washing device one-level solvent inlet (36);

Washing device comprises washing device mulser B (53) and washing device phase splitting device D (54), washing device mulser B (53) is provided with washing device mulser B import (55), washing device mulser B exports (56), washing device phase splitting device D (54) is provided with washing device phase splitting device D mixed phase import (59), washing device phase splitting device D heavy out (61) and washing device phase splitting device D light phase export (60), washing device mulser B import (55) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of washing device (57) and washing device (58), and washing device mulser B outlet (56) is connected with washing device phase splitting device D mixed phase import (59); Washing device phase splitting device B light phase export (43) is connected with washing device mulser B solvent inlet (58), washing device phase splitting device D heavy out (61) is connected with washing device mixing tank A dispersed phase fluid import (40), and washing device phase splitting device D light phase export (60) connects with the light import mutually of back extraction tower (64).

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.