CN202116313U

CN202116313U - Phosphoric acid purifying device

Info

Publication number: CN202116313U
Application number: CN2011202061001U
Authority: CN
Inventors: 王邵东; 闵胜益; 吴邦文; 王华杰
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2011-06-19
Filing date: 2011-06-19
Publication date: 2012-01-18
Anticipated expiration: 2021-06-19

Abstract

The utility model discloses a phosphoric acid purifying device which comprises an extraction device, a cleaning device and a back extraction device, wherein the extraction device comprises two groups of mixers and split-phase devices, or one group or more groups of mixers and split-phase devices are added to the combination of the extraction device; the cleaning device comprises a group of emulsifying machines and split-phase devices as well as a group of mixers and split-phase devices, or one group or more groups of emulsifying machines and split-phase devices (mixers and split-phase devices) are added to the combination of the cleaning device; and the back extraction device selects a pulse sieve-plate tower as a mass transfer device. A continuous phase fluid inlet of the extraction device is connected with a light phase outlet of the sieve-plate tower of the back extraction device, a solvent inlet of the cleaning device is connected with a final stage light phase outlet of the extraction device, and a light phase inlet of the sieve-plate tower of the back extraction device is connected with a final stage light phase outlet of the cleaning device. The phosphoric acid purifying device can strengthen the mass transfer performance, improve the purification efficiency, reduce the device investment and operation expense, and is small in area occupation.

Description

Phosphoric acid purification device

Technical field

The utility model relates to this chemical plant 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 plant that can realize extraction, washing, back extraction function at present is mainly following: 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, and this equipment main drawback has: horizontal multistage mixing-tempering tank floor space is bigger, is 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; Packing tower, the packing tower structure is simple relatively, but efficient is lower, the material that can not be used to that solid particulate is arranged and be prone to fouling; Sieve plate is fixed on the hub in the oscillating screen plate tower, oscillating screen plate tower, is driven by toggle, and this tower is limited by equipment material, the very difficulty that maximizes, and working cost is higher.

The tower that in wet phosphoric acid purifying, is used at present the back extraction operation is basic identical or similar with the tower structure that is used for extraction process, and operating method is also basic identical.But the mechanism of action of extraction and back extraction has very big difference in wet phosphoric acid purifying; Require phosphoric acid as much as possible to be diffused in the organic phase as soon as possible in the extraction process, and cation impurity get into water realization separation, so general extracting operation requires organic phase as external phase; Water is as disperse phase; And generally to have more deposition to separate out in the extraction process, and equipment is resulted in blockage easily, to the structure of tower particular requirement to be arranged; Back extraction is that the phosphoric acid in the back extraction loaded solvent is diffused into aqueous phase as soon as possible, experiment showed, that water more can reach the back extraction effect than organic phase is continuous continuously in the back extraction tower.If as the back extraction tower, the plate ring structure in the pulse plate ring tower is unfavorable for having water continuous with pulse plate ring tower, because when carrying out the water operate continuously, organic phase is easy to generate the coalescence effect and influences the back extraction effect as disperse phase; If use vibration back extraction device sieve-tray tower to be the back extraction tower, this tower is limited by equipment material, and equipment failure rate is high, 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, and reaction conversion ratio is high; 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 CN1625777A; Disclosed " a kind of multi-channeled micro-structured reactor " on 02 22nd, 2006, continuous phase fluid gets into reactor drum from the inlet tube distribution chamber in this reactor drum, and dispersed phase fluid is passed dispersion medium and got into 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 receives 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 division down such as turbulent flow, 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.

Summary of the invention

The purpose of the 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 utility model; Comprise extraction plant, washing device and back extraction device; Wherein: extraction plant comprises extraction plant mixing tank and extraction plant phase splitting device, extraction plant secondary mixing tank and extraction plant secondary phase splitting device; The extraction plant mixing tank is provided with extraction plant continuous phase fluid inlet, extraction plant dispersed phase fluid inlet and the outlet of extraction plant mixed phase fluid; The extraction plant phase splitting device is provided with the import of extraction plant mixed phase, extraction plant heavy out and extraction plant light phase export, and the outlet of extraction plant mixed phase fluid is connected with the import of extraction plant mixed phase; Extraction plant secondary mixing tank is provided with extraction plant secondary continuous phase fluid inlet, extraction plant secondary dispersed phase fluid inlet and the outlet of extraction plant secondary mixed phase fluid; 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, and the outlet of extraction plant secondary mixed phase fluid is connected with the import of extraction plant secondary mixed phase; The extraction plant light phase export is connected with extraction plant secondary continuous phase fluid inlet; Extraction plant secondary heavy out is connected with extraction plant dispersed phase fluid inlet;

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

Back extraction device comprises sieve-tray tower and back extraction device surge generator; The back extraction device sieve-tray tower is attend by the back extraction device at top that the clarifying chamber constitutes under the back extraction device of back extraction device body of the tower and bottom at clarifying chamber, middle part, and it is some that the back extraction device sieve plate is housed in the back extraction device body of the tower; Back extraction device is attend the clarifying chamber and is provided with back extraction device reverse-extraction agent inlet pipe and back extraction device sieve-tray tower light phase export, and the back extraction device liquidometer is arranged outward, and back extraction device reverse-extraction agent inlet pipe is connected with the washing composition distribution plate; Be provided with the light phase import of back extraction device sieve-tray tower under the back extraction device in the clarifying chamber, back extraction acid relief outlet is arranged at the bottom, and the light phase import of back extraction device sieve-tray tower is connected with back extraction loaded solvent distribution plate; Back extraction device body of the tower bottom connects the back extraction device surge generator, and pulse is imported in the tower; Extraction plant secondary light phase export is connected with the washing device solvent inlet, and washing device phase splitting device B light phase export connects with the light import mutually of back extraction device sieve-tray tower, and back extraction device sieve-tray tower light phase export is connected with extraction plant continuous phase fluid inlet.

Above-mentioned phosphoric acid purification device; Wherein: extraction plant comprises three grades of mixing tanks of extraction plant and three grades of phase splitting devices of extraction plant; Three grades of mixing tanks of extraction plant are provided with three grades of continuous phase fluid inlets of extraction plant, three grades of dispersed phase fluid inlets of extraction plant and three grades of mixed phase fluid outlets of extraction plant; Three grades of phase splitting devices 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, and three grades of mixed phase fluid outlets of extraction plant are connected with three grades of mixed phase imports of extraction plant; Three grades of continuous phase fluid 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 extraction plant secondary dispersed phase fluid inlet, and three grades of light phase exports of extraction plant are connected with the washing device solvent inlet;

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

Washing device comprises washing device mixing tank B and washing device phase splitting device D; Washing device mixing tank B is provided with washing device mixing tank B continuous phase fluid inlet, washing device mixing tank B dispersed phase fluid inlet and the outlet of washing device mixing tank B mixed phase fluid; 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 light phase export and washing device phase splitting device D 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 D mixed phase; Washing device phase splitting device B light phase export is connected with washing device mixing tank B continuous phase fluid inlet; Washing device phase splitting device D heavy out is connected with washing device mixing tank A dispersed phase fluid inlet, and washing device phase splitting device D light phase export connects with the light import mutually of back extraction device sieve-tray 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 can be known from above technical scheme, requires difference according to purifying, and the extraction plant that constitutes phosphoric acid purification device comprises two groups of mixing tanks and phase splitting device, or on aforesaid combination, increases one or more groups mixing tank and phase splitting device; Washing device comprises one group of mulser and phase splitting device and one group of mixing tank and phase splitting device, or on aforesaid combination, increases one or more groups mulser and phase splitting device (or mixing tank and phase splitting device); Back extraction device selects for use pulsed sieve plate column as mass transfer apparatus.In the phosphoric acid purification process; Feed phosphoric acid (fresh phosphoric) adds through final stage extraction plant mixer disperses phase fluid inlet; Washing acid (purifying phosphoric acid), the mixing tank through the final stage washing device, the dispersed phase fluid inlet of mulser, phosphoric acid import add, and de-salted water adds through the import of back extraction device sieve-tray tower reverse-extraction agent.The no-load solvent of extraction plant continuous phase fluid inlet is from back extraction device sieve-tray tower light phase export; The loaded solvent of washing device solvent inlet is from extraction plant final stage light phase export, and the light phase import of back extraction device sieve-tray tower loaded solvent is from washing device final stage light phase export.Because mixing tank, mulser mass transfer area are big, mass-transfer efficiency is high.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 through refining production food grade and electron-level phosphoric acid.System's material loading level is little, avoids hazardous material (fluids) (like 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 miniaturized; Mixing tank, mulser cost are low, can save facility investment.

Use pulsed sieve plate column as the back extraction tower, can avoid organic phase to be easy to generate the coalescence effect and to influence the back extraction effect, liquidometer is installed in attendes the control that the clarifying chamber also is beneficial to water operate continuously phase interface as disperse phase.

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

Embodiment

Below in conjunction with accompanying drawing,, specify as follows its embodiment of phosphoric acid purification device, structure, characteristic and the effect thereof that proposes according to the utility model:

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 comprises extraction plant mixing tank 1 and extraction plant phase splitting device 2, extraction plant secondary mixing tank 9 and extraction plant secondary phase splitting device 10; Extraction plant mixing tank 1 is provided with extraction plant continuous phase fluid inlet 3, extraction plant dispersed phase fluid inlet 4 and extraction plant mixed phase fluid outlet 5, and extraction plant phase splitting device 2 is provided with extraction plant mixed phase import 6, extraction plant heavy out 8 and extraction plant light phase export 7, and extraction plant mixed phase fluid outlet 5 is connected with extraction plant mixed phase import 6; Extraction plant secondary mixing tank 9 is provided with extraction plant secondary continuous phase fluid inlet 11, extraction plant secondary dispersed phase fluid inlet 12 and extraction plant secondary mixed phase fluid outlet 13; Extraction plant secondary phase splitting device 10 is provided with extraction plant secondary mixed phase import 14, extraction plant secondary heavy out 16 and extraction plant secondary light phase export 15, and extraction plant secondary mixed phase fluid outlet 13 is connected with extraction plant secondary mixed phase import 14; Extraction plant light phase export 7 is connected with extraction plant secondary continuous phase fluid inlet 11; Extraction plant secondary heavy out 16 is connected with extraction plant dispersed phase fluid inlet 4;

Washing device comprises washing device mulser A25 and washing device phase splitting device A26, washing device mixing tank A34 and washing device phase splitting device B35; Washing device mulser A25 is provided with washing device mulser A import 27, washing device mulser A outlet 28; Washing device phase splitting device A26 is provided with washing device mixed phase import 29, washing device heavy out 30 and washing device light phase export 31; Washing device mulser A import 27 is connected with washing device solvent inlet 33 with washing device phosphoric acid import 32, and washing device mulser A outlet 28 is connected with washing device mixed phase import 29; Washing device mixing tank A34 is provided with washing device mixing tank A continuous phase fluid inlet 36, washing device mixing tank A dispersed phase fluid inlet 37 and washing device mixing tank A mixed phase fluid outlet 38; Washing device phase splitting device B35 is provided with washing device phase splitting device B mixed phase import 39, washing device phase splitting device B light phase export 40 and washing device phase splitting device B heavy out 41, and washing device mixing tank A mixed phase fluid outlet 38 is connected with washing device phase splitting device B mixed phase import 39; Washing device light phase export 31 is connected with washing device mixing tank A continuous phase fluid inlet 36, and washing device phase splitting device B heavy out 41 is connected with washing device phosphoric acid import 32;

Back extraction device comprises sieve-tray tower and back extraction device surge generator 70; The back extraction device sieve-tray tower is attend by the back extraction device at top that clarifying chamber 66 constitutes under the back extraction device of back extraction device body of the tower 63 and bottom at 59 middle parts, clarifying chamber, and it is some that back extraction device sieve plate 64 is housed in the back extraction device body of the tower 63; Back extraction device is attend clarifying chamber 59 and is provided with back extraction device reverse-extraction agent inlet pipe 61 and back extraction device sieve-tray tower light phase export 60, and back extraction device liquidometer 69 is arranged outward, and back extraction device reverse-extraction agent inlet pipe 61 is connected with washing composition distribution plate 62; Be provided with the light phase import 68 of back extraction device sieve-tray tower under the back extraction device in the clarifying chamber 66, back extraction acid relief outlet 67 is arranged at the bottom, and the light phase import 68 of back extraction device sieve-tray tower is connected with back extraction loaded solvent distribution plate 65; Back extraction device body of the tower bottom connects back extraction device surge generator 70, and pulse is imported in the tower; Extraction plant secondary light phase export 15 is connected with washing device solvent inlet 33; Washing device phase splitting device B light phase export 40 connects with the light import mutually 68 of back extraction device sieve-tray tower, and back extraction device sieve-tray tower light phase export 60 is connected with extraction plant continuous phase fluid inlet 3.

During use: at extraction plant; The phosphoric acid that extraction plant secondary heavy out 16 comes out; The no-load solvent of under the effect of pump, return extraction plant dispersed phase fluid inlet 4, coming from back extraction device gets into extraction plant mixing tank 1 from extraction plant continuous phase fluid inlet 3; Solvent and phosphoric acid are accomplished the efficient mass transfer process in extraction plant mixing tank 1, the mixed phase of formation comes out from extraction plant mixed phase fluid outlet 5, get into extraction plant phase splitting device 2 through extraction plant mixed phase import 6.In extraction plant phase splitting device 2, realize the layering of mixed phase, formation light, weigh two phases.Impurity in the phosphoric acid gets into heavy phase becomes raffinate from 8 discharges of extraction plant heavy out; Phosphoric acid is become loaded solvent by SX and comes out from extraction plant light phase export 7, under the effect of pump, gets into extraction plant secondary mixing tank 9 through extraction plant secondary continuous phase fluid inlet 11.Fresh phosphoric gets into extraction plant secondary mixing tank 9 through extraction plant secondary dispersed phase fluid inlet 12; Efficient mass transfer effect through extraction plant secondary mixing tank 9; Further improve the effect of extracting of phosphoric acid; The mixed phase that forms comes out from extraction plant secondary mixed phase fluid outlet 13; Get into extraction plant secondary phase splitting devices 10 through extraction plant secondary phase splitting device mixed phase import 14, the layering of realization mixed phase extraction plant secondary phase splitting device 10 in, formation light, weigh two phases; Phosphoric acid is become loaded solvent by SX and gets into washing device from extraction plant secondary light phase export 15, and the impurity in the phosphoric acid gets into heavy phase and returns extraction plant mixing tank 1 through extraction plant heavy out 16.

At washing device; The phosphoric acid that comes out from washing device phase splitting device B heavy out 41 under the effect of pump from washing device phosphoric acid import 32, all get into washing device mulser A25 from washing device solvent inlet 33 through washing device mulser import 27 from the loaded solvent of extraction plant; Loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A25; The mixed phase that forms comes out from washing device mulser A outlet 28, gets into washing device phase splitting device A26 through washing device mixed phase import 29; In washing device phase splitting device A26, realize the layering of mixed phase, formation light, weigh two phases; Impurity entering heavy phase in the loaded solvent becomes washes spent acid from 30 discharges of washing device heavy out; Loaded solvent comes out from washing device light phase export 31, under the effect of pump, gets into washing device mixing tank A34 through washing device mixing tank A continuous phase fluid inlet 36; Purifying phosphoric acid gets into washing device mixing tank A34 through washing device mixing tank A dispersed phase fluid inlet 37; Efficient mass transfer effect through washing device mixing tank A34; Further improve washing effect; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 38, gets into washing device phase splitting device B35 through washing device phase splitting device B mixed phase import 39, in washing device phase splitting device B35, realizes the layering of mixed phase; Form light, weigh two phases; Heavy phase is then returned washing device mulser A25 through washing device phase splitting device B heavy out 41, and loaded solvent gets into the light phase import 68 of back extraction device sieve-tray tower from washing device phase splitting device B light phase export 40 after being cleaned phosphoric acid washing, realizes washing, purifying.

At back extraction device; De-salted water gets into back extraction device body of the tower 63 and is full of the back extraction device body of the tower from back extraction device reverse-extraction agent inlet pipe 61; The wash load solvent gets into back extraction device body of the tower 63 as disperse phase from the light phase import 68 of back extraction device sieve-tray tower; Through the dispersion of sieve aperture and the pulse action of back extraction device surge generator 70 generations, two materials are realized efficient mass transfers at back extraction device body of the tower 63.The wash load solvent becomes no-load solvent after by the de-salted water back extraction and rises to back extraction device and attend clarifying chamber 59, flows out from back extraction device sieve-tray tower light phase export 60 and returns the phosphoric acid purification extraction process.Phosphoric acid in the wash load solvent then gets into water to be become back extraction acid and sinks to clarifying chamber 66 under the back extraction device, discharges from back extraction acid relief outlet 67.

Embodiment 2

Referring to Fig. 2; Adopt the phosphoric acid purification device of three grades of extractions, washing; Comprise extraction plant, washing device and back extraction device; Wherein: extraction plant comprises three grades of mixing tanks of extraction plant (17) and three grades of phase splitting devices of extraction plant (18); Three grades of mixing tanks of extraction plant (17) are provided with three grades of continuous phase fluid inlets of extraction plant (19), three grades of dispersed phase fluid inlets of extraction plant (20) and three grades of mixed phase fluid outlets of extraction plant (21); Three grades of phase splitting devices of extraction plant (18) are provided with three grades of mixed phase imports of extraction plant (22), three grades of heavy outs of extraction plant (24) and three grades of light phase exports of extraction plant (23), and three grades of mixed phase fluid outlets of extraction plant (21) are connected with three grades of mixed phase imports of extraction plant (22); Extraction plant secondary light phase export (15) is connected with three grades of continuous phase fluid inlets of extraction plant (19); Three grades of heavy outs of extraction plant (24) are connected with extraction plant secondary dispersed phase fluid inlet (12), and three grades of light phase exports of extraction plant (23) are connected with washing device solvent inlet 33;

Washing device comprises washing device mulser B42 and washing device phase splitting device C43; Washing device mulser B42 is provided with washing device mulser B import 44, washing device mulser B outlet 45; Washing device phase splitting device C43 is provided with washing device phase splitting device C mixed phase import 46, washing device phase splitting device C heavy out 47 and washing device phase splitting device C light phase export 48; Three grades of phosphoric acid imports 49 of washing device mulser B import 44 and washing device are connected with three grades of solvent inlets 50 of washing device, and washing device mulser B outlet 45 is connected with washing device phase splitting device C mixed phase import 46; Three grades of solvent inlets 50 of washing device phase splitting device B light phase export 40 and washing device are connected; Washing device phase splitting device C heavy out 47 is connected with washing device mixing tank A dispersed phase fluid inlet 37, and washing device phase splitting device C light phase export 48 connects with the light import mutually 68 of back extraction device sieve-tray tower;

All the other are together with embodiment 1.

During use; At extraction plant; The phosphoric acid that extraction plant secondary heavy out 16 comes out, the no-load solvent of under the effect of pump, return extraction plant dispersed phase fluid inlet 4, coming from back extraction device gets into extraction plant mixing tank 1 from extraction plant continuous phase fluid inlet 3, and solvent and phosphoric acid are accomplished the efficient mass transfer process in extraction plant mixing tank 1; The mixed phase that forms comes out from extraction plant mixed phase fluid outlet 5, gets into extraction plant phase splitting device 2 through extraction plant mixed phase import 6.In extraction plant phase splitting device 2, realize the layering of mixed phase, formation light, weigh two phases.Impurity in the phosphoric acid gets into heavy phase becomes raffinate from 8 discharges of extraction plant heavy out; Phosphoric acid is become loaded solvent by SX and comes out from extraction plant light phase export 7, under the effect of pump, gets into extraction plant secondary mixing tank 9 through extraction plant secondary continuous phase fluid inlet 11.The phosphoric acid that three grades of heavy outs 24 of extraction plant come out; Under the effect of pump, return extraction plant secondary mixing tank 9; Efficient mass transfer effect through extraction plant secondary mixing tank 9; The mixed phase that forms comes out from extraction plant secondary mixed phase fluid outlet 13, gets into extraction plant secondary phase splitting device 10 through extraction plant secondary phase splitting device mixed phase import 14, in extraction plant secondary phase splitting device 10, realizes the layering of mixed phase; Form light, weigh two phases, the impurity in the phosphoric acid gets into heavy phase and returns extraction plant mixing tank 1 through extraction plant heavy out 16.Loaded solvent comes out from extraction plant secondary light phase export 15; Under the effect of pump, get into three grades of mixing tanks 17 of extraction plants through three grades of dispersed phase fluid inlets 20 of extraction plant through the continuous phase fluids inlet of three grades of extraction plants 19, fresh phosphoric; Efficient mass transfer effect through multi-stage solvent extraction device mixing tank has improved the phosphoric acid extraction effect as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 21 of extraction plant; Get into three grades of phase splitting devices 18 of extraction plant through three grades of mixed phase imports of extraction plant 22; In three grades of phase splitting devices 18 of extraction plant, realize the layering of mixed phase; Form light, weigh two phases; Phosphoric acid is become loaded solvent by SX and comes out to get into washing device from three grades of light phase exports of extraction plant 23, and the impurity in the phosphoric acid gets into heavy phase and returns extraction plant secondary mixing tank 9 through three grades of heavy outs 24 of extraction plant.

At washing device, the phosphoric acid that washing device phase splitting device C heavy out 47 comes out returns washing device mixing tank A34 under the effect of pump; Loaded solvent from washing device phase splitting device B light phase export 40 come out, under the effect of pump through three grades of solvent inlets 50 of washing device, washing acid (purifying phosphoric acid) gets into washing device mulser B42 through three grades of phosphoric acid imports of washing device 49 through washing device mulser B import 44; The mixed phase that forms comes out from washing device mulser B outlet 45; Get into washing device phase splitting device C43 through washing device phase splitting device C mixed phase import 46; In washing device phase splitting device C43, realize the layering of mixed phase; Form light, weigh two phases, loaded solvent comes out to get into back extraction device from washing device phase splitting device C light phase export 48 after being washed acid (purifying phosphoric acid) eccysis impurity; Heavy phase is then returned washing device mixing tank A34 through washing device phase splitting device C heavy out 47; Loaded solvent with 36 entering of washing device mixing tank A continuous phase fluid inlet; Efficient mass transfer effect through washing device mixing tank A34; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 38; Get into washing device phase splitting device B35 through washing device phase splitting device B mixed phase import 39, in washing device phase splitting device B35, realize the layering of mixed phase, formation light, weigh two phases; Loaded solvent gets into washing device mulser B42 from washing device phase splitting device B light phase export 40; Heavy phase then through washing device phase splitting device B heavy out 41 return washing device mulser A25, under the effect of pump from washing device phosphoric acid import 32, all get into washing device mulser A25 from the loaded solvent of extraction plant from washing device solvent inlet 33 through washing device mulser import 27, loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A25; The mixed phase that forms comes out from washing device mulser outlet 28, gets into washing device phase splitting device 26 through washing device mixed phase import 29; In washing device phase splitting device 26, realize the layering of mixed phase, formation light, weigh two phases; The impurity entering heavy phase of loaded solvent becomes washes spent acid from 30 discharges of washing device heavy out; Loaded solvent comes out from washing device light phase export 31, under the effect of pump, gets into washing device mixing tank A34 through washing device mixing tank A continuous phase fluid inlet 36.

At back extraction device with embodiment 1.

Embodiment 3

Referring to Fig. 3; Adopt the phosphoric acid purification device of three grades of extractions, washing; Comprise extraction plant, washing device and back extraction device; Wherein: extraction plant comprises three grades of mixing tanks of extraction plant (17) and three grades of phase splitting devices of extraction plant (18); Three grades of mixing tanks of extraction plant (17) are provided with three grades of continuous phase fluid inlets of extraction plant (19), three grades of dispersed phase fluid inlets of extraction plant (20) and three grades of mixed phase fluid outlets of extraction plant (21); Three grades of phase splitting devices of extraction plant (18) are provided with three grades of mixed phase imports of extraction plant (22), three grades of heavy outs of extraction plant (24) and three grades of light phase exports of extraction plant (23), and three grades of mixed phase fluid outlets of extraction plant (21) are connected with three grades of mixed phase imports of extraction plant (22); Extraction plant secondary light phase export (15) is connected with three grades of continuous phase fluid inlets of extraction plant (19); Three grades of heavy outs of extraction plant (24) are connected with extraction plant secondary dispersed phase fluid inlet (12), and three grades of light phase exports of extraction plant (23) are connected with washing device solvent inlet 33;

Washing device comprises washing device mixing tank B51 and washing device phase splitting device D52; Washing device mixing tank B51 is provided with washing device mixing tank B continuous phase fluid inlet 53, washing device mixing tank B dispersed phase fluid inlet 54 and washing device mixing tank B mixed phase fluid outlet 55; Washing device phase splitting device D52 is provided with washing device phase splitting device D mixed phase import 56, washing device phase splitting device D light phase export 57 and washing device phase splitting device D heavy out 58, and washing device mixing tank B mixed phase fluid outlet 55 is connected with washing device phase splitting device D mixed phase import 56; Washing device phase splitting device B light phase export 40 is connected with washing device mixing tank B continuous phase fluid inlet 53; Washing device phase splitting device D heavy out 58 is connected with washing device mixing tank A dispersed phase fluid inlet 37, and washing device phase splitting device D light phase export 57 connects with the light import mutually 68 of back extraction device sieve-tray tower;

All the other are with embodiment 1.

During use, at extraction plant, its principle of work is with embodiment 2.

At washing device; The loaded solvent that comes out from washing device phase splitting device B light phase export 40; Under the effect of pump, get into washing device mixing tank B51 through washing device mixing tank B continuous phase fluid inlet 53, washing acid (purifying phosphoric acid) gets into washing device mixing tank B51 through washing device mixing tank B dispersed phase fluid inlet 54; The mixed phase that forms comes out from washing device mixing tank B mixed phase fluid outlet 55; Get into washing device phase splitting device D52 through washing device phase splitting device D mixed phase import 56; In washing device phase splitting device D52, realize the layering of mixed phase; Form light, weigh two phases, loaded solvent comes out to get into back extraction device from washing device phase splitting device D light phase export 57 after being washed acid (purifying phosphoric acid) eccysis impurity; Heavy phase is then come out through washing device phase splitting device D heavy out 58, under the effect of pump, returns washing device mixing tank A 34 through washing device mixing tank A dispersed phase fluid inlet 37; Loaded solvent comes out, under the effect of pump, gets into washing device mixing tank A34 through washing device mixing tank A continuous phase fluid inlet 36 from the light phase export 31 of washing device phase splitting device A; Efficient mass transfer effect through washing device mixing tank A34; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 38; Get into washing device phase splitting device B35 through washing device phase splitting device B mixed phase import 39; In washing device phase splitting device B35, realize the layering of mixed phase; Form light, weigh two phases; Loaded solvent gets into washing device mixing tank B51 from washing device phase splitting device B light phase export 40, and heavy phase then all gets into washing device mulser A25 through washing device mulser import 27 from washing device phosphoric acid import 32, loaded solvent from washing device solvent inlet 33 through washing device phase splitting device B heavy out 41 under the effect of pump, and loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A25; The mixed phase that forms comes out from washing device mulser A outlet 28, gets into washing device phase splitting device A26 through mixed phase import 29; In washing device phase splitting device A26, realize the layering of mixed phase, formation light, weigh two phases; The impurity entering heavy phase of loaded solvent becomes washes spent acid from 30 discharges of washing device heavy out, and loaded solvent comes out to get into washing device mixing tank A34 from light phase export 31.

At back extraction device, its principle of work is 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 CN1625777A, open day: on 02 22nd, 2006, disclosed " a kind of multi-channeled micro-structured reactor ".

The above; It only is the preferred embodiment of the utility model; Be not that the utility model is done any pro forma restriction; Any the utility model technical scheme content that do not break away from, all still belongs in the scope of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.

Claims

1. phosphoric acid purification device; Comprise extraction plant, washing device and back extraction device; It is characterized in that: extraction plant comprises extraction plant mixing tank (1) and extraction plant phase splitting device (2), extraction plant secondary mixing tank (9) and extraction plant secondary phase splitting device (10); Extraction plant mixing tank (1) is provided with extraction plant continuous phase fluid inlet (3), extraction plant dispersed phase fluid inlet (4) and extraction plant mixed phase fluid outlet (5); Extraction plant phase splitting device (2) is provided with extraction plant mixed phase import (6), extraction plant heavy out (8) and extraction plant light phase export (7), and extraction plant mixed phase fluid outlet (5) is connected with extraction plant mixed phase import (6); Extraction plant secondary mixing tank (9) is provided with extraction plant secondary continuous phase fluid inlet (11), extraction plant secondary dispersed phase fluid inlet (12) and extraction plant secondary mixed phase fluid outlet (13); Extraction plant secondary phase splitting device (10) is provided with extraction plant secondary mixed phase import (14), extraction plant secondary heavy out (16) and extraction plant secondary light phase export (15), and extraction plant secondary mixed phase fluid outlet (13) is connected with extraction plant secondary mixed phase import (14); Extraction plant light phase export (7) is connected with extraction plant secondary continuous phase fluid inlet (11); Extraction plant secondary heavy out (16) is connected with extraction plant dispersed phase fluid inlet (4);

Washing device comprises washing device mulser A (25) and washing device phase splitting device A (26), washing device mixing tank A (34) and washing device phase splitting device B (35); Washing device mulser A (25) is provided with washing device mulser A import (27), washing device mulser A exports (28); Washing device phase splitting device A (26) is provided with washing device mixed phase import (29), washing device heavy out (30) and washing device light phase export (31); Washing device mulser A import (27) is connected with washing device solvent inlet (33) with washing device phosphoric acid import (32), and washing device mulser A outlet (28) is connected with washing device mixed phase import (29); Washing device mixing tank A (34) is provided with washing device mixing tank A continuous phase fluid inlet (36), washing device mixing tank A dispersed phase fluid inlet (37) and washing device mixing tank A mixed phase fluid outlet (38); Washing device phase splitting device B (35) is provided with washing device phase splitting device B mixed phase import (39), washing device phase splitting device B light phase export (40) and washing device phase splitting device B heavy out (41), and washing device mixing tank A mixed phase fluid outlet (38) is connected with washing device phase splitting device B mixed phase import (39); Washing device light phase export (31) is connected with washing device mixing tank A continuous phase fluid inlet (36), and washing device phase splitting device B heavy out (41) is connected with washing device phosphoric acid import (32);

Back extraction device comprises sieve-tray tower and back extraction device surge generator (70); The back extraction device sieve-tray tower is attend by the back extraction device at top that clarifying chamber (66) constitutes under the back extraction device of back extraction device body of the tower (63) and bottom at clarifying chamber (59), middle part, and it is some that back extraction device sieve plate (64) is housed in the back extraction device body of the tower (63); Back extraction device is attend clarifying chamber (59) and is provided with back extraction device reverse-extraction agent inlet pipe (61) and back extraction device sieve-tray tower light phase export (60); Back extraction device liquidometer (69) is arranged outward, and back extraction device reverse-extraction agent inlet pipe (61) is connected with washing composition distribution plate (62); Be provided with the light phase import of back extraction device sieve-tray tower (68) in the clarifying chamber under the back extraction device (66), back extraction acid relief outlet (67) is arranged at the bottom, and the light phase import of back extraction device sieve-tray tower (68) is connected with back extraction loaded solvent distribution plate (65); Back extraction device body of the tower bottom connects back extraction device surge generator (70);

Extraction plant secondary light phase export (15) is connected with washing device solvent inlet (33); Washing device phase splitting device B light phase export (40) connects with the light import mutually of back extraction device sieve-tray tower (68), and back extraction device sieve-tray tower light phase export (60) is connected with extraction plant continuous phase fluid inlet (3).

2. phosphoric acid purification device as claimed in claim 1; It is characterized in that: extraction plant comprises three grades of mixing tanks of extraction plant (17) and three grades of phase splitting devices of extraction plant (18); Three grades of mixing tanks of extraction plant (17) are provided with three grades of continuous phase fluid inlets of extraction plant (19), three grades of dispersed phase fluid inlets of extraction plant (20) and three grades of mixed phase fluid outlets of extraction plant (21); Three grades of phase splitting devices of extraction plant (18) are provided with three grades of mixed phase imports of extraction plant (22), three grades of heavy outs of extraction plant (24) and three grades of light phase exports of extraction plant (23), and three grades of mixed phase fluid outlets of extraction plant (21) are connected with three grades of mixed phase imports of extraction plant (22); Extraction plant secondary light phase export (15) is connected with three grades of continuous phase fluid inlets of extraction plant (19); Three grades of heavy outs of extraction plant (24) are connected with extraction plant secondary dispersed phase fluid inlet (12), and three grades of light phase exports of extraction plant (23) are connected with washing device solvent inlet (33);

Washing device comprises washing device mulser B (42) and washing device phase splitting device C (43); Washing device mulser B (42) is provided with washing device mulser B import (44), washing device mulser B exports (45); Washing device phase splitting device C (43) is provided with washing device phase splitting device C mixed phase import (46), washing device phase splitting device C heavy out (47) and washing device phase splitting device C light phase export (48); Washing device mulser B import (44) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of washing device (49) and washing device (50), and washing device mulser B outlet (45) is connected with washing device phase splitting device C mixed phase import (46); Washing device phase splitting device B light phase export (40) is connected with three grades of solvent inlets of washing device (50); Washing device phase splitting device C heavy out (47) is connected with washing device mixing tank A dispersed phase fluid inlet (37), and washing device phase splitting device C light phase export (48) connects with the light import mutually of back extraction device sieve-tray tower (68).

3. phosphoric acid purification device as claimed in claim 1; It is characterized in that: extraction plant comprises three grades of mixing tanks of extraction plant (17) and three grades of phase splitting devices of extraction plant (18); Three grades of mixing tanks of extraction plant (17) are provided with three grades of continuous phase fluid inlets of extraction plant (19), three grades of dispersed phase fluid inlets of extraction plant (20) and three grades of mixed phase fluid outlets of extraction plant (21); Three grades of phase splitting devices of extraction plant (18) are provided with three grades of mixed phase imports of extraction plant (22), three grades of heavy outs of extraction plant (24) and three grades of light phase exports of extraction plant (23), and three grades of mixed phase fluid outlets of extraction plant (21) are connected with three grades of mixed phase imports of extraction plant (22); Extraction plant secondary light phase export (15) is connected with three grades of continuous phase fluid inlets of extraction plant (19); Three grades of heavy outs of extraction plant (24) are connected with extraction plant secondary dispersed phase fluid inlet (12), and three grades of light phase exports of extraction plant (23) are connected with washing device solvent inlet (33);

Washing device comprises washing device mixing tank B (51) and washing device phase splitting device D (52); Washing device mixing tank B (51) is provided with washing device mixing tank B continuous phase fluid inlet (53), washing device mixing tank B dispersed phase fluid inlet (54) and washing device mixing tank B mixed phase fluid outlet (55); Washing device phase splitting device D (52) is provided with washing device phase splitting device D mixed phase import (56), washing device phase splitting device D light phase export (57) and washing device phase splitting device D heavy out (58), and washing device mixing tank B mixed phase fluid outlet (55) is connected with washing device phase splitting device D mixed phase import (56); Washing device phase splitting device B light phase export (40) is connected with washing device mixing tank B continuous phase fluid inlet (53); Washing device phase splitting device D heavy out (58) is connected with washing device mixing tank A dispersed phase fluid inlet (37), and washing device phase splitting device D light phase export (57) connects with the light import mutually of back extraction device sieve-tray tower (68).

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

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