CN201762107U - Phosphoric acid purification device - Google Patents

Abstract

The utility model discloses a phosphoric acid purification device which comprises an extraction device, a washing device and a back-extraction device, wherein the extraction device adopts a pulsed sieve-plate tower to serve as mass transfer equipment; the washing device adopts a two-stage structure comprising two groups of emulsifying machines and phase-splitting equipment or a multi-stage structure comprising a plurality of groups of emulsifying machines and phase-splitting equipment; and the back-extraction device comprises a group of an emulsifying machine and phase-splitting equipment and a group of a mixer and phase-splitting equipment, or the back-extraction device comprises the combination of the group of the emulsifying machine and the phase-splitting equipment and the group of the mixer and the phase-splitting equipment, and one or more groups of emulsifying machines and phase-splitting equipment (or mixers and phase-splitting equipment). The sieve-plate tower light phase inlet of the extraction device is connected with the light phase outlet of the last-stage phase-splitting equipment of the back-extraction device, the first-stage solvent inlet of the washing device is connected with the sieve-plate tower light phase outlet of the extraction device, and the first-stage solvent inlet of the back-extraction device is connected with the light phase outlet of the last-stage phase-splitting equipment of the washing device. The utility model improves the mass transfer performance, increases the purification efficiency and reduces the equipment investment and the operating cost.

Description

Phosphoric acid purification device

Technical field

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

Background technology

Realize that with solvent extraction technology phosphoric acid purification is a phosphoric acid purification technology commonly used at present, solvent extraction technology generally comprises extraction, washing, reaches the back extraction operation.The chemical industry equipment that can realize extraction, washing, back extraction function at present is mainly as follows: multistage mixing-clarifying tank, it is a kind of typically contact liquid liquid mass transfer apparatus step by step, wherein every grade comprises mixing tank and clarifying tank two portions, this equipment main drawback has: horizontal multistage mixing-tempering tank floor space is bigger, be equipped with whipping appts in each level, fluid generally needs to use pump delivery flowing of inter-stage, and cost of equipment and process cost are all bigger; Pulse plate ring tower and oscillating screen plate tower, pulse plate ring tower need be done the tower body size very big in order to reach higher mass transfer effect, needs to fill a large amount of materials when carrying out production operation in the tower, and system's start-stop car time is long, and it is big that spillage risk takes place; And sieve plate is fixed on the central shaft in the oscillating screen plate tower, is driven by toggle, and this tower is limited by equipment material, the equipment failure rate height, and working cost is higher.For addressing the above problem, Chinese patent publication number CN2325567 discloses a kind of " sieve-tray tower that is used for pulse extraction " on 02 20th, 2002, but it can only finish mixed processes, material goes out also need enter proprietary phase splitting device behind the tower and carry out phase-splitting, and system device is many, and sieve diameter is too little, when being used for the phosphoric acid by wet process extraction, cause clogging of screen easily because of there being more precipitation to separate out, inconvenient operation is unfavorable for the phosphoric acid by wet process extraction.

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

Mixing tank has important application in numerous hybrid reactions fields such as chemistry, chemical industry, petrochemical industry, medicine and food.This equipment mass transfer area is big, the reaction conversion ratio height; Cost of equipment is low, and is simple to operate; Regulate single passage width and parallel access volume and accomplish scale production, the device processes amount is big.Chinese patent publication number CN1571427A, disclosed on 02 22nd, 2006 " a kind of multi-channeled micro-structured reactor ", continuous phase fluid enters reactor from the inlet tube distribution chamber in this reactor, dispersed phase fluid is passed dispersion medium and is entered the external phase parallel channels, under continuous phase fluid flows shear action, be dispersed into fine droplet or bubble, contact, realize short mix and reaction between two-phase fluid with continuous phase fluid.

Summary of the invention

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

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

Extraction plant comprises sieve-tray tower and surge generator, and sieve-tray tower is made of the last clarifying chamber at top, the body of the tower at middle part and the following clarifying chamber of bottom, and it is some that sieve plate is housed in the body of the tower; Last clarifying chamber is provided with heavy phase import of extraction plant sieve-tray tower and extraction plant sieve-tray tower light phase export, and the heavy phase distribution plate in the import of extraction plant sieve-tray tower heavy phase and the body of the tower is communicated with; Following clarifying chamber is provided with the light phase import of extraction plant sieve-tray tower, the peripheral hardware liquidometer, and the bottom is provided with extraction plant sieve-tray tower raffinate relief outlet, light phase import of extraction plant sieve-tray tower and the interior light connection of distribution plate mutually of body of the tower; Surge generator is connected with following clarifying chamber;

Washing device comprises washing device one-level mulser and washing device one-level phase splitting device, washing device secondary mulser and washing device secondary phase splitting device, washing device one-level mulser is provided with mulser import of washing device one-level and the outlet of washing device one-level mulser, washing device one-level phase splitting device is provided with the import of washing device one-level mixed phase, washing device one-level heavy out and washing device one-level light phase export, the import of washing device one-level mulser is connected with washing device one-level detergent inlet and washing device one-level solvent inlet, and the outlet of washing device one-level mulser is connected with the import of washing device one-level mixed phase; Washing device secondary mulser is provided with mulser import of washing device secondary and the outlet of washing device secondary mulser, washing device secondary phase splitting device is provided with the import of washing device secondary mixed phase, washing device secondary heavy out and washing device secondary light phase export, the import of washing device secondary mulser is connected with washing device secondary detergent inlet and the import of washing device secondary solvent, and the outlet of washing device secondary mulser is connected with the import of washing device secondary mixed phase; Washing device one-level light phase export is connected with the import of washing device secondary solvent, and washing device secondary heavy out is connected with washing device one-level detergent inlet;

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

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

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

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

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

Above-mentioned phosphoric acid purification device, wherein: sieve diameter is 7-18mm.

The utility model compared with prior art has tangible beneficial effect, as can be known from the above technical solutions, requires difference according to purifying, and wherein: extraction plant selects for use pulsed sieve plate column as mass transfer apparatus; Washing device select for use two groups of mulsers and phase splitting device secondary or by many groups mulser and phase splitting device combine multistage; Back extraction device comprises one group of mulser and phase splitting device and one group of mixing tank and phase splitting device, or increases one or more groups mulser and phase splitting device (or 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 sieve-tray tower heavy phase, washing acid (purifying phosphoric acid) adds by washing device final stage detergent inlet, and de-salted water adds by back extraction device final stage phosphoric acid import (or diffusing phase import).The no-load solvent of the light phase import of extraction plant sieve-tray tower is from the light phase export of back extraction device final stage phase splitting device, the loaded solvent of washing device one-level solvent inlet is from extraction plant sieve-tray tower light phase export, and the loaded solvent of back extraction device solvent inlet is from the light phase export of washing device final stage phase splitting device.As can be known from the above technical solutions, add surge generator because of adopting sieve-tray tower, contact with material in the tower as pulsating medium with air, and surge generator does not directly contact with material, paired pulses generation equipment material is less demanding, and equipment amplifies easily; Sieve plate can effectively improve the material contact surface, the lift technique mass-transfer performance, thus can reduce equipment size, promptly can reduce the fill material amount, reduce system's start-stop car time; The design of clarifying chamber has up and down realized that mixing and phase-splitting finish in an equipment.Tower lower section sieve diameter and distance between plates can avoid a large amount of solid impurities to cause clogging of screen in the lower panel deposition from bigger than middle part and upper segment, influence mass-transfer efficiency.Sieve diameter can satisfy mass transfer effect in the 7-18mm scope, can reduce to stop up probability again; The liquidometer that connects outside the following clarifying chamber can help operator to understand the system interface changing conditions at any time, and the system of keeping balances each other, and makes things convenient for system to regulate.

Mulser, mixing tank mass transfer area are big, the mass-transfer efficiency height.The mixed solution that comes out from mulser, mixing tank is easy to phase-splitting, thereby guarantees to divide phase effect.The purifying phosphoric acid foreign matter content that obtains is low, but by refining production food grade and electron-level phosphoric acid.System's material loading level is little, avoids hazardous material (fluids) (as phosphoric acid, organic extractant) to leak in a large number and the peace ring accident that causes; Mulser, mixing tank floor space are little, and appliance arrangement is arranged simple, and factory building can be realized miniaturization; The mulser cost is low, can save facility investment.

Description of drawings

Fig. 1 is the single step arrangement synoptic diagram of utility model;

Fig. 2 is the secondary structure synoptic diagram of utility model;

Fig. 3 is the tertiary structure synoptic diagram of utility model.

Mark among the figure:

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

Embodiment

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

Embodiment 1

Referring to Fig. 1, adopt the phosphoric acid purification device of secondary washing and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant sieve-tray tower light phase export 2 is connected with washing device one-level solvent inlet 21, washing device secondary light phase export 28 is connected with back extraction device solvent inlet 48, and back extraction device phase splitting device B light phase export 55 connects with the light import mutually 11 of extraction plant sieve-tray tower;

Extraction plant comprises sieve-tray tower and surge generator 12, and sieve-tray tower is made of the last clarifying chamber 1 at top, the body of the tower 5 at middle part and the following clarifying chamber 9 of bottom, and it is some that sieve plate 6 is housed in the body of the tower 5; Last clarifying chamber 1 is provided with extraction plant sieve-tray tower heavy phase import 3 and extraction plant sieve-tray tower light phase export 2, and the heavy phase distribution plate 4 in the import 3 of extraction plant sieve-tray tower heavy phase and the body of the tower 5 is communicated with; Following clarifying chamber 9 is provided with the light phase import 11 of extraction plant sieve-tray tower, peripheral hardware liquidometer 8, and the bottom is provided with extraction plant sieve-tray tower raffinate relief outlet 10, and the light distribution plate mutually 7 in the light phase import 11 of extraction plant sieve-tray tower and the body of the tower 5 is communicated with; Surge generator 12 is connected with following clarifying chamber 9;

The sieve diameter 10-18mm of body of the tower 5 hypomere sieve plates 6, pitch of holes 20-36mm; The sieve diameter 8-16mm of body of the tower 5 stage casing sieve plates 6, pitch of holes 16-32mm: the sieve diameter 7-14mm of body of the tower 5 epimere sieve plates 6, pitch of holes 14-28mm.Body of the tower 5 hypomere sieve plate spacings are 100-150mm; Body of the tower 5 stage casings, epimere sieve plate spacing are 70-120mm.

Washing device comprises washing device one-level mulser 13 and washing device one-level phase splitting device 14, washing device secondary mulser 22 and washing device secondary phase splitting device 23, washing device one-level mulser 13 is provided with washing device one-level mulser import 15 and washing device one-level mulser outlet 16, washing device one-level phase splitting device 14 is provided with washing device one-level mixed phase import 17, washing device one-level heavy out 18 and washing device one-level light phase export 19, washing device one-level mulser import 15 is connected with washing device one-level detergent inlet 20 and washing device one-level solvent inlet 21, and washing device one-level mulser outlet 16 is connected with washing device one-level mixed phase import 17; Washing device secondary mulser 22 is provided with washing device secondary mulser import 24 and washing device secondary mulser outlet 25, washing device secondary phase splitting device 23 is provided with washing device secondary mixed phase import 26, washing device secondary heavy out 27 and washing device secondary light phase export 28, washing device secondary mulser import 24 is connected with washing device secondary detergent inlet 29 and washing device secondary solvent import 30, and washing device secondary mulser outlet 25 is connected with washing device secondary mixed phase import 26; Washing device one-level light phase export 19 is connected with washing device secondary solvent import 30, and washing device secondary heavy out 27 is connected with washing device one-level detergent inlet 20;

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

During use, feed phosphoric acid (fresh phosphoric) enters body of the tower 5 from extraction plant sieve-tray tower heavy phase import 3 by heavy phase distribution plate 4, organic solvent enters body of the tower 5 from the light phase import 11 of extraction plant sieve-tray tower by light phase distribution plate 7, two materials are reverse contact in body of the tower 5, provide pulse power by surge generator 12, two materials are realized efficient mass transfer in tower.Phosphoric acid is entered by organic solvent extraction gently to be become the extraction loaded solvent mutually and rises to clarifying chamber 1 on the extraction plant sieve-tray tower, flows out from extraction plant sieve-tray tower light phase export 2 to enter washing device.Impurity in the phosphoric acid then enters heavy phase to be become raffinate and sinks to down clarifying chamber 9, discharges from extraction plant sieve-tray tower raffinate relief outlet 10, thereby realizes extracting and separating.

At washing device, the phosphoric acid that washing device secondary heavy out 27 comes out, under the effect of pump, enter washing device one-level mulser 13 from washing device one-level solvent inlet 21 by washing device one-level mulser import 15 from washing device one-level detergent inlet 20, the loaded solvent that comes from extraction plant, loaded solvent and phosphoric acid are finished the efficient mass transfer process in washing device one-level mulser 13, the mixed phase that forms comes out from washing device one-level mulser outlet 16, enters washing device one-level phase splitting device 14 by washing device one-level mixed phase import 17.In washing device one-level phase splitting device 14, 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 one-level heavy out 18, be washed the loaded solvent that has purified and come out, under the effect of pump, enter washing device secondary mulser 22 by washing device secondary mulser import 24 through washing device secondary solvent import 30 from washing device one-level light phase export 19.Washing acid (purifying phosphoric acid) enters washing device secondary mulser 22 through washing device secondary detergent inlet 29 by washing device secondary mulser import 24, efficient mass transfer effect by washing device secondary mulser 22, further improve the molten washing effect of load, the mixed phase that forms comes out from washing device secondary mulser outlet 25, enter washing device secondary phase splitting device 23 by washing device secondary mixed phase import 26, in two washing device secondary phase splitting devices 23, realize the layering of mixed phase, what form is light, heavy two-phase, be washed the loaded solvent that has purified and enter back extraction device from washing device secondary light phase export 28, impurity in the loaded solvent enters heavy phase and returns washing device one-level mulser 13 by washing device secondary heavy out 27, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that comes out from back extraction device phase splitting device B heavy out 56 under the effect of pump from back extraction device phosphoric acid import 47, all enter back extraction device mulser A40 from back extraction device solvent inlet 48 by back extraction device mulser import 42 from the washing device loaded solvent, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mulser A40, the mixed phase that forms comes out from back extraction device mulser A outlet 43, enters back extraction device phase splitting device A41 by back extraction device mixed phase import 44; In back extraction device phase splitting device A41, realize the layering of mixed phase, light, the heavy two-phase of formation; Phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 45 discharges of back extraction device heavy out, the loaded solvent that also contains part phosphoric acid comes out from back extraction device light phase export 46, enters back extraction device mixing tank A49 through back extraction device mixing tank A continuous phase fluid inlet 51 under the effect of pump; De-salted water enters back extraction device mixing tank A49 through back extraction device mixing tank A dispersed phase fluid inlet 52, efficient mass transfer effect by back extraction device mixing tank A49, further improve the back extraction effect, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 53, enter back extraction device phase splitting device B50 by back extraction device phase splitting device B mixed phase import 54, in back extraction device phase splitting device B50, realize the layering of mixed phase, what form is light, heavy two-phase, heavy phase is then returned back extraction device mulser A40 by back extraction device phase splitting device B heavy out 56, loaded solvent is desalted and becomes no-load solvent after the water back extraction and enter the light phase import 11 of extraction plant sieve-tray tower from back extraction device phase splitting device B light phase export 55, realizes the recycle of extraction agent.

Embodiment 2

Referring to Fig. 2, adopt the phosphoric acid purification device of three grades of washings and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant is with embodiment 1;

Washing device comprises three grades of mulsers 31 of washing device and three grades of phase-splitting equipment 32 of washing device, three grades of mulsers 31 of washing device are provided with three grades of mulser imports 33 of washing device and three grades of mulser outlets 34 of washing device, three grades of phase-splitting equipment 32 of washing device are provided with three grades of mixed phase imports 35 of washing device, three grades of heavy outs 36 of washing device and three grades of light phase exports 37 of washing device, three grades of detergent inlet 38 of three grades of mulser imports 33 of washing device and washing device and three grades of solvent inlets 39 of washing device are connected, and three grades of mulsers of washing device outlet 34 is connected with three grades of mixed phase imports 35 of washing device; Three grades of solvent inlets 39 of washing device secondary light phase export 28 and washing device are connected, and three grades of heavy outs 36 of washing device are connected with washing device secondary detergent inlet 29, and three grades of light phase exports 37 of washing device are connected with back extraction device solvent inlet 48;

Back extraction device comprises back extraction device mulser B57 and back extraction device phase splitting device C58, back extraction device mulser B57 is provided with back extraction device mulser B import 59, back extraction device mulser B outlet 60, back extraction device phase splitting device C58 is provided with back extraction device phase splitting device C mixed phase import 61, back extraction device phase splitting device C heavy out 62 and back extraction device phase splitting device C light phase export 63, three grades of phosphoric acid imports 64 of back extraction device mulser B import 59 and back extraction device are connected with three grades of solvent inlets 65 of back extraction device, and back extraction device mulser B outlet 60 is connected with back extraction device phase splitting device C mixed phase import 61; Three grades of solvent inlets 65 of back extraction device phase splitting device B light phase export 55 and back extraction device are connected, back extraction device phase splitting device C heavy out 62 is connected with back extraction device mixing tank A dispersed phase fluid inlet 52, and back extraction device phase splitting device C light phase export 63 connects with the light import mutually 11 of extraction plant sieve-tray tower.

All the other are with embodiment 1.

During use, at extraction plant, with embodiment 1.

At washing device, loaded solvent comes out from washing device secondary light phase export 28, enters washing device three grade mulsers 31 through three grades of detergent inlet 38 of washing device by three grades of mulser imports 33 of washing device through three grades of solvent inlets 39 of washing device, washing acid (purifying phosphoric acid) under the effect of pump.Efficient mass transfer effect by multistage mulser has improved the phosphoric acid washing effect as much as possible; The mixed phase that forms comes out from three grades of mulser outlets 34 of washing device, enter three grades of phase-splitting equipment 32 of washing device by three grades of mixed phase imports 35 of washing device, in three grades of phase-splitting equipment 32 of washing device, realize the layering of mixed phase, light, the heavy two-phase that forms, be washed the loaded solvent that has purified and come out to enter back extraction device from three grades of light phase exports of washing device 37, the impurity in the loaded solvent enters heavy phase and returns washing device secondary mulser 22 by three grades of heavy outs 36 of washing device.By three grades of washings, the impurity major part in the loaded solvent is entered heavy phase by phosphoric acid washing and finally discharges from washing device one-level heavy out 18, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that back extraction device phase splitting device C heavy out 62 comes out returns back extraction device mixing tank A49 under the effect of pump; Loaded solvent from back extraction device phase splitting device B light phase export 55 come out, under the effect of pump through three grades of solvent inlets 65 of back extraction device, reverse-extraction agent (de-salted water) enters back extraction device mulser B57 through three grades of phosphoric acid imports 64 of back extraction device by back extraction device mulser B import 59; The mixed phase that forms comes out from back extraction device mulser B outlet 60, enter back extraction device phase splitting device C58 by back extraction device phase splitting device C mixed phase import 61, in back extraction device phase splitting device C58, realize the layering of mixed phase, light, the heavy two-phase that forms, loaded solvent is become no-load solvent by reverse-extraction agent (de-salted water) back extraction and comes out to return extraction plant from back extraction device phase splitting device C light phase export 63; Heavy phase is then returned back extraction device mixing tank A49 by back extraction device phase splitting device C heavy out 62, with back extraction device mixing tank A continuous phase fluid inlet 51 loaded solvents that enter, efficient mass transfer effect by back extraction device mixing tank A49, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 53, and all the other are with embodiment 1.

Embodiment 3

Referring to Fig. 3, adopt the phosphoric acid purification device of three grades of washings and back extraction, comprise extraction plant, washing device and back extraction device, wherein: extraction plant, washing device are with embodiment 2;

Back extraction device comprises back extraction device mixing tank B66 and back extraction device phase splitting device D67, back extraction device mixing tank B66 is provided with back extraction device mixing tank B continuous phase fluid inlet 68, back extraction device mixing tank B dispersed phase fluid inlet 69 and back extraction device mixing tank B mixed phase fluid outlet 70, back extraction device phase splitting device D67 is provided with back extraction device phase splitting device D mixed phase import 71, back extraction device phase splitting device D light phase export 72 and back extraction device phase splitting device D heavy out 73, back extraction device mixing tank B mixed phase fluid outlet 70 are connected with back extraction device phase splitting device D mixed phase import 71; Back extraction device phase splitting device B light phase export 55 is connected with back extraction device mixing tank B continuous phase fluid inlet 68, back extraction device phase splitting device D heavy out 73 is connected with back extraction device mixing tank A dispersed phase fluid inlet 52, and back extraction device phase splitting device D light phase export 72 connects with the light import mutually 11 of extraction plant sieve-tray tower.

All the other are with embodiment 2.

During use, at extraction plant, with embodiment 1.

At washing device, with embodiment 2.

At back extraction device, the loaded solvent that comes out from back extraction device phase splitting device B light phase export 55, enter back extraction device mixing tank B66 through back extraction device mixing tank B continuous phase fluid inlet 68 under the effect of pump, reverse-extraction agent (de-salted water) enters back extraction device mixing tank B66 through back extraction device mixing tank B dispersed phase fluid inlet 69; The mixed phase that forms comes out from back extraction device mixing tank B mixed phase fluid outlet 70, enter back extraction device phase splitting device D67 by back extraction device phase splitting device D mixed phase import 71, in back extraction device phase splitting device D67, realize the layering of mixed phase, light, the heavy two-phase that forms, loaded solvent is become no-load solvent by reverse-extraction agent (de-salted water) back extraction and comes out to return extraction plant from back extraction device phase splitting device D light phase export 72; Heavy phase is then come out by back extraction device phase splitting device D heavy out 73, returns back extraction device mixing tank A 49 by back extraction device mixing tank A dispersed phase fluid inlet 52 under the effect of pump; Loaded solvent comes out from the light phase export 46 of back extraction device phase splitting device A41, under the effect of pump, enter back extraction device mixing tank A49 through back extraction device mixing tank A continuous phase fluid inlet 51, efficient mass transfer effect by back extraction device mixing tank A49, the mixed phase that forms comes out from back extraction device mixing tank A mixed phase fluid outlet 53, enter back extraction device phase splitting device B50 by back extraction device phase splitting device B mixed phase import 54, in back extraction device phase splitting device B50, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent that also contains part phosphoric acid enters back extraction device mixing tank B66 from back extraction device phase splitting device B light phase export 55, heavy phase then by back extraction device phase splitting device B heavy out 75 under the effect of pump from back extraction device phosphoric acid import 56, loaded solvent all enters back extraction device mulser A40 by back extraction device mulser import 42 from back extraction device solvent inlet 47, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mulser A40, the mixed phase that forms comes out from back extraction device mulser A outlet 43, enters back extraction device phase splitting device A41 by mixed phase import 44; In back extraction device phase splitting device A41, realize the layering of mixed phase, light, the heavy two-phase of formation; The phosphoric acid of loaded solvent enters heavy phase becomes purifying phosphoric acid from 45 discharges of back extraction device heavy out, and loaded solvent comes out to enter back extraction device mixing tank A49 from light phase export 46.

Above mulser all adopts the pipeline high-shearing dispersion emulsifying machine.

Mixing tank adopts Chinese patent publication number CN1571427A, discloses on 02 22nd, 2006 " 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 (4)

1. phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant sieve-tray tower light phase export (2) is connected with washing device one-level solvent inlet (21), washing device secondary light phase export (28) is connected with back extraction device solvent inlet (48), and back extraction device phase splitting device B light phase export (55) connects with the light import mutually of extraction plant sieve-tray tower (11);

Extraction plant comprises sieve-tray tower and surge generator (12), and sieve-tray tower is made of the last clarifying chamber (1) at top, the body of the tower (5) at middle part and the following clarifying chamber (9) of bottom, and it is some that sieve plate (6) is housed in the body of the tower (5); Last clarifying chamber (1) is provided with extraction plant sieve-tray tower heavy phase import (3) and extraction plant sieve-tray tower light phase export (2), and the heavy phase distribution plate (4) in extraction plant sieve-tray tower heavy phase import (3) and the body of the tower (5) is communicated with; Following clarifying chamber (9) is provided with the light phase import of extraction plant sieve-tray tower (11), peripheral hardware liquidometer (8), the bottom is provided with extraction plant sieve-tray tower raffinate relief outlet (10), light phase import of extraction plant sieve-tray tower (11) and interior light distribution plate mutually (7) connection of body of the tower (5); Surge generator (12) is connected with following clarifying chamber (9);

Washing device comprises washing device one-level mulser (13) and washing device one-level phase splitting device (14), washing device secondary mulser (22) and washing device secondary phase splitting device (23), washing device one-level mulser (13) is provided with washing device one-level mulser import (15) and washing device one-level mulser outlet (16), washing device one-level phase splitting device (14) is provided with washing device one-level mixed phase import (17), washing device one-level heavy out (18) and washing device one-level light phase export (19), washing device one-level mulser import (15) is connected with washing device one-level detergent inlet (20) and washing device one-level solvent inlet (21), and washing device one-level mulser outlet (16) is connected with washing device one-level mixed phase import (17); Washing device secondary mulser (22) is provided with washing device secondary mulser import (24) and washing device secondary mulser outlet (25), washing device secondary phase splitting device (23) is provided with washing device secondary mixed phase import (26), washing device secondary heavy out (27) and washing device secondary light phase export (28), washing device secondary mulser import (24) is connected with washing device secondary detergent inlet (29) and washing device secondary solvent import (30), and washing device secondary mulser outlet (25) is connected with washing device secondary mixed phase import (26); Washing device one-level light phase export (19) is connected with washing device secondary solvent import (30), and washing device secondary heavy out (27) is connected with washing device one-level detergent inlet (20);

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

2. phosphoric acid purification device as claimed in claim 1 is characterized in that:

Washing device comprises three grades of mulsers of washing device (31) and three grades of phase-splitting equipment of washing device (32), three grades of mulsers of washing device (31) are provided with three grades of mulser imports of washing device (33) and three grades of mulser outlets of washing device (34), three grades of phase-splitting equipment of washing device (32) are provided with three grades of mixed phase imports of washing device (35), three grades of light phase exports of three grades of heavy outs of washing device (36) and washing device (37), three grades of mulser imports of washing device (33) are connected with three grades of detergent inlet of washing device (38) and three grades of solvent inlets of washing device (39), and three grades of mulser outlets of washing device (34) are connected with three grades of mixed phase imports of washing device (35); Washing device secondary light phase export (28) is connected with three grades of solvent inlets of washing device (39), three grades of heavy outs of washing device (36) are connected with washing device secondary detergent inlet (29), and three grades of light phase exports of washing device (37) are connected with back extraction device solvent inlet (48);

Back extraction device comprises back extraction device mulser B (57) and back extraction device phase splitting device C (58), back extraction device mulser B (57) is provided with back extraction device mulser B import (59), back extraction device mulser B exports (60), back extraction device phase splitting device C (58) is provided with back extraction device phase splitting device C mixed phase import (61), back extraction device phase splitting device C heavy out (62) and back extraction device phase splitting device C light phase export (63), back extraction device mulser B import (59) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of back extraction device (64) and back extraction device (65), and back extraction device mulser B outlet (60) is connected with back extraction device phase splitting device C mixed phase import (61); Back extraction device phase splitting device B light phase export (55) is connected with three grades of solvent inlets of back extraction device (65), back extraction device phase splitting device C heavy out (62) is connected with back extraction device mixing tank A dispersed phase fluid inlet (52), and back extraction device phase splitting device C light phase export (63) connects with the light import mutually of extraction plant sieve-tray tower (11).

3. phosphoric acid purification device as claimed in claim 1, it is characterized in that: washing device comprises three grades of mulsers of washing device (31) and three grades of phase-splitting equipment of washing device (32), three grades of mulsers of washing device (31) are provided with three grades of mulser imports of washing device (33) and three grades of mulser outlets of washing device (34), three grades of phase-splitting equipment of washing device (32) are provided with three grades of mixed phase imports of washing device (35), three grades of light phase exports of three grades of heavy outs of washing device (36) and washing device (37), three grades of mulser imports of washing device (33) are connected with three grades of detergent inlet of washing device (38) and three grades of solvent inlets of washing device (39), and three grades of mulser outlets of washing device (34) are connected with three grades of mixed phase imports of washing device (35); Washing device secondary light phase export (28) is connected with three grades of solvent inlets of washing device (39), three grades of heavy outs of washing device (36) are connected with washing device secondary detergent inlet (29), and three grades of light phase exports of washing device (37) are connected with back extraction device solvent inlet (48);

Back extraction device comprises back extraction device mixing tank B (66) and back extraction device phase splitting device D (67), back extraction device mixing tank B (66) is provided with back extraction device mixing tank B continuous phase fluid inlet (68), back extraction device mixing tank B dispersed phase fluid inlet (69) and back extraction device mixing tank B mixed phase fluid outlet (70), back extraction device phase splitting device D (67) is provided with back extraction device phase splitting device D mixed phase import (71), back extraction device phase splitting device D light phase export (72) and back extraction device phase splitting device D heavy out (73), back extraction device mixing tank B mixed phase fluid outlet (70) is connected with back extraction device phase splitting device D mixed phase import (71); Back extraction device phase splitting device B light phase export (55) is connected with back extraction device mixing tank B continuous phase fluid inlet (68), back extraction device phase splitting device D heavy out (73) is connected with back extraction device mixing tank A dispersed phase fluid inlet (52), and back extraction device phase splitting device D light phase export (72) connects with the light import mutually of extraction plant sieve-tray tower (11).

4. as the described phosphoric acid purification device of one of claim 1-3, it is characterized in that: sieve diameter is 7-18mm.

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