CN201427866Y

CN201427866Y - Phosphoric acid purification device

Info

Publication number: CN201427866Y
Application number: CN2009201254940U
Authority: CN
Inventors: 李红林; 冉瑞泉; 骆广生; 吕阳成
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2009-06-29
Filing date: 2009-06-29
Publication date: 2010-03-24
Anticipated expiration: 2019-06-29

Abstract

The utility model discloses a phosphoric acid purification device which comprises an extraction device, a cleaning device and a back-extraction device, wherein the extraction device and the back-extraction device select a single stage formed by a group of mixers and phase separation facilities, or multiple stages formed by combining multiple groups of mixers and phase separation facilities; the cleaning device selects a single stage formed by a group of emulsifying machines and phase separation facilities, or multiple stages formed by combining multiple groups of emulsifying machines and phaseseparation facilities; a continuous phase fluid inlet of the extraction device is connected with a light phase outlet of a final-stage phase separation facility of the back-extraction device; a one-stage solvent inlet of the cleaning device is connected with a light phase outlet of a final-stage phase separation facility of the extraction device; and a continuous phase fluid inlet of the back-extraction device is connected with a light phase outlet of a final-stage phase separation facility of the cleaning device. Due to the adoption of the phosphoric acid purification device, the mass transfer performance can be enhanced, the purification efficiency is improved, the facility investment and the operation cost are reduced, and the occupied area is small.

Description

Phosphoric acid purification device

Technical field

The present invention relates to this chemical industry equipment field, relate in particular to a kind of phosphoric acid purification device.

Background technology

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

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 CN1736577A, 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.

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.

Summary of the invention

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

A kind of phosphoric acid purification device of the present invention, comprise extraction plant, washing device and back extraction device, wherein: the extraction plant light phase export is connected with washing device one-level solvent inlet, light phase export is connected with back extraction device continuous phase fluid inlet in the washing device, and the back extraction device light phase export is connected with extraction plant continuous phase fluid inlet; Extraction plant comprises extraction plant mixing tank and extraction plant 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; Washing device comprises washing device one-level mulser and washing device one-level 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 continuous phase fluid inlet, and the outlet of washing device one-level mulser is connected with the import of washing device one-level mixed phase; Back extraction device comprises back extraction device mixing tank and back extraction device phase splitting device, the back extraction device mixing tank is provided with back extraction device one-level solvent inlet, back extraction device dispersed phase fluid inlet and the outlet of back extraction device mixed phase fluid, the back extraction device phase splitting device is provided with the import of back extraction device mixed phase, back extraction device heavy out and back extraction device light phase export, and the outlet of back extraction device mixed phase fluid is connected with the import of back extraction device mixed phase.

Above-mentioned phosphoric acid purification device, wherein: extraction plant comprises extraction plant secondary mixing tank and extraction plant secondary phase splitting device, 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 by pipeline, extraction plant secondary heavy out is connected with extraction plant dispersed phase fluid inlet by pipeline, and extraction plant secondary light phase export is connected with washing device one-level solvent inlet; Washing device comprises washing device secondary mulser and washing device secondary phase splitting device, 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 by pipeline, washing device secondary heavy out is connected with washing device one-level detergent inlet by pipeline, and washing device secondary light phase export is connected with back extraction device continuous phase fluid inlet; Back extraction device comprises back extraction device secondary mixing tank and back extraction device secondary phase splitting device, back extraction device secondary mixing tank is provided with back extraction device secondary continuous phase fluid inlet, back extraction device secondary dispersed phase fluid inlet and the outlet of back extraction device secondary mixed phase fluid, back extraction device secondary phase splitting device is provided with the import of back extraction device secondary mixed phase, back extraction device secondary heavy out and back extraction device secondary light phase export, and the outlet of back extraction device mixed phase second grade fluid is connected with the import of back extraction device secondary mixed phase; The back extraction device light phase export is connected with back extraction device secondary continuous phase fluid inlet by pipeline, back extraction device secondary heavy out is connected with back extraction device dispersed phase fluid inlet by pipeline, and back extraction device secondary 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 equipment of extraction plant, three grades of mixing tanks of extraction plant are provided with three grades of continuous phase fluid inlets of extraction plant, extraction plant disperses phase fluid inlet and three grades of mixed phase fluid outlets of extraction plant for three grades, three grades of phase-splitting equipment of extraction plant are provided with three grades of mixed phase imports of extraction plant, three grades of heavy outs of extraction plant and three grades of light phase exports of extraction plant, 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 washing device one-level solvent inlet; 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 phase-splittings of washing device are established light phase export and are connected with back extraction device continuous phase fluid inlet; Back extraction device comprises three grades of mixing tanks of back extraction device and three grades of phase-splitting equipment of back extraction device, three grades of mixing tanks of back extraction device are provided with three grades of continuous phase fluid inlets of back extraction device, back extraction device disperses phase fluid inlet and three grades of mixed phase fluid outlets of back extraction device for three grades, three grades of phase-splitting equipment of back extraction device are provided with three grades of mixed phase imports of back extraction device, three grades of heavy outs of back extraction device and three grades of light phase exports of back extraction device, and three grades of mixed phase fluid outlets of back extraction device are connected with three grades of mixed phase imports of back extraction device; Three grades of continuous phase fluid inlets of back extraction device secondary light phase export and back extraction device are connected, and three grades of heavy outs of back extraction device are connected with back extraction device secondary dispersed phase fluid inlet, and three grades of light phase exports of back extraction device are connected with extraction plant continuous phase fluid inlet.

The present invention compared with prior art, as can be known from the above technical solutions, different according to purify requiring, constitute in the phosphoric acid purification device, extraction plant, back extraction device select for use single-stage that one group of mixing tank and phase splitting device constitute or by multiple mixer and phase splitting device combine multistage.Washing device select for use single-stage that one group of mulser and phase splitting device constitute or by many groups mulser and phase splitting device combine multistage; In the phosphoric acid purification process, feed phosphoric acid (fresh phosphoric), de-salted water are added by extraction plant final stage dispersed phase fluid inlet, back extraction device final stage dispersed phase fluid inlet respectively, and washing acid (purifying phosphoric acid) is added by the import of washing device final stage mulser reverse-extraction agent.The no-load solvent of extraction plant continuous phase fluid inlet is from the light phase export of back extraction device final stage phase splitting device, the loaded solvent of washing device one-level solvent inlet is from the light phase export of extraction plant final stage phase splitting device, and the loaded solvent of back extraction device continuous phase fluid inlet is from the light phase export of washing device final stage phase splitting device.Because mulser, 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; Mulser, mixing tank cost are low, can save facility investment.

Description of drawings

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

Fig. 2 is the secondary structure synoptic diagram of invention;

Fig. 3 is the tertiary structure synoptic diagram of invention.

Mark among the figure:

1, the extraction plant mixing tank, 2, the extraction plant phase splitting device, 3, extraction plant continuous phase fluid inlet, 4, extraction plant dispersed phase fluid inlet, 5, the outlet of extraction plant mixed phase fluid, 6, the import of extraction plant mixed phase, 7, the extraction plant light phase export, 8, the 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, the import of extraction plant secondary mixed phase, 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 equipment of extraction plant, 19, three grades of continuous phase fluid inlets of extraction plant, 20, extraction plant disperses the phase fluid inlet for three grades, 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 one-level mulser, 26, washing device one-level phase splitting device, 27, the import of washing device one-level mulser, 28, the outlet of washing device one-level mulser, 29, the import of washing device one-level mixed phase, 30, washing device one-level heavy out, 31, washing device one-level light phase export, 32, washing device one-level detergent inlet, 33, washing device one-level solvent inlet, 34, washing device secondary mulser, 35, washing device secondary phase splitting device, 36, the import of washing device secondary mulser, 37, the outlet of washing device secondary mulser, 38, the import of washing device secondary mixed phase, 39, washing device secondary heavy out, 40, washing device secondary light phase export, 41, washing device secondary detergent inlet, 42, the import of washing device secondary solvent, 43, three grades of mulsers of washing device, 44, three grades of phase-splitting equipment of washing device, 45, three grades of mulser imports of washing device, 46, three grades of mulser outlets of washing device, 47, three grades of mixed phase imports of washing device, 48, three grades of heavy outs of washing device, 49, three grades of light phase exports of washing device, 50, three grades of detergent inlet of washing device, 51, three grades of solvent inlets of washing device.

52, the back extraction device mixing tank, 53, the back extraction device phase splitting device, 54, back extraction device continuous phase fluid inlet, 55, back extraction device dispersed phase fluid inlet, 56, the outlet of back extraction device mixed phase fluid, 57, the import of back extraction device mixed phase, 58, the back extraction device light phase export, 59, the back extraction device heavy out, 60, back extraction device secondary mixing tank, 61, back extraction device secondary phase splitting device, 62, back extraction device secondary continuous phase fluid inlet, 63, back extraction device secondary dispersed phase fluid inlet, 64, the outlet of back extraction device secondary mixed phase fluid, 65, the import of back extraction device secondary mixed phase, 66, back extraction device secondary light phase export, 67, back extraction device secondary heavy out, 68, three grades of mixing tanks of back extraction device, 69, three grades of phase-splitting equipment of back extraction device, 70, three grades of continuous phase fluid inlets of back extraction device, 71, back extraction device disperses phase fluid inlet, 72 for three grades, three grades of mixed phase fluid outlets of back extraction device, 73, three grades of mixed phase imports of back extraction device, 74, three grades of light phase exports of back extraction device, 75, three grades of heavy outs of back extraction device

Embodiment

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

Embodiment 1

Referring to Fig. 1, adopt the phosphoric acid purification device of single-stage extraction device, washing device and back extraction device, wherein: extraction plant light phase export 7 is connected with washing device one-level solvent inlet 33, washing device one-level light phase export 31 is connected with back extraction device continuous phase fluid inlet 54, and back extraction device light phase export 58 is connected with extraction plant continuous phase fluid inlet 3;

Extraction plant comprises extraction plant mixing tank 1 and extraction plant phase splitting device 2, 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;

Washing device comprises washing device one-level mulser 25 and washing device one-level phase splitting device 26, washing device one-level mulser 25 is provided with washing device one-level mulser import 27 and washing device one-level mulser outlet 28, washing device one-level phase splitting device 26 is provided with washing device one-level mixed phase import 29, washing device one-level heavy out 30 and washing device one-level light phase export 31, washing device one-level mulser import 27 is connected with washing device one-level detergent inlet 32 and washing device one-level solvent inlet 33, and washing device one-level mulser outlet 28 is connected with washing device one-level mixed phase import 29;

Back extraction device comprises back extraction device mixing tank 52 and back extraction device phase splitting device 53, back extraction device mixing tank 52 is provided with back extraction device continuous phase fluid inlet 54, back extraction device dispersed phase fluid inlet 55 and back extraction device mixed phase fluid outlet 56, back extraction device phase splitting device 53 is provided with back extraction device mixed phase import 57, back extraction device heavy out 59 and back extraction device light phase export 58, and back extraction device mixed phase fluid outlet 56 is connected with back extraction device mixed phase import 57.

During use, at extraction plant, phosphoric acid enters mixing tank 1 from extraction plant dispersed phase fluid inlet 4, extraction agent (from the no-load solvent of back extraction device light phase export 58) from extraction plant continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished the efficient mass transfer process in mixing tank 1, the mixed phase that forms comes out from extraction plant mixed phase fluid outlet 5, enters extraction plant phase splitting device 2 by extraction plant phase splitting device mixed phase import 6.In extraction plant phase splitting device 2, realize the layering of mixed phase, light, the heavy two-phase of formation.Phosphoric acid is extracted agent extraction to be become loaded solvent and enters washing device from extraction plant light phase export 7, and the impurity in the phosphoric acid enters heavy phase to be become raffinate and discharge from extraction plant heavy out 8, thereby realizes extracting and separating.

At washing device, washing acid (purifying phosphoric acid) is from washing device one-level detergent inlet 32, enter washing device one-level mulser 25 from washing device one-level solvent inlet 33 by washing device one-level mulser import 27 from the loaded solvent of extraction plant, loaded solvent and purifying phosphoric acid are finished the efficient mass transfer process in washing device one-level mulser 25, the mixed phase that forms comes out from washing device one-level mulser outlet 28, enters washing device one-level phase splitting device 26 by washing device one-level mixed phase import 29.In washing device one-level phase splitting device 26, realize the layering of mixed phase, light, the heavy two-phase that forms, impurity in the loaded solvent enters heavy phase to be become and washes spent acid and discharge from washing device one-level heavy out 30, by phosphoric acid purification loaded solvent enter washing device from washing device one-level light phase export 31, thereby realize washing, purifying.

At back extraction device, de-salted water enters back extraction device mixing tank 52 from back extraction device dispersed phase fluid inlet 55, the loaded solvent that comes from washing device from back extraction device continuous phase fluid inlet 54, loaded solvent and de-salted water are finished the efficient mass transfer process in back extraction device mixing tank 52, the mixed phase that forms comes out from back extraction device mixed phase fluid outlet 56, enters back extraction device phase splitting device 53 by back extraction device mixed phase import 57.In back extraction device phase splitting device 53, realize the layering of mixed phase, light, the heavy two-phase that forms, phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 59 discharges of back extraction device heavy out, the loaded solvent of taking off phosphoric acid becomes no-load solvent and returns extraction plant from back extraction device light phase export 58, thereby realizes recycling of extraction agent.

Embodiment 2

Referring to Fig. 2, the extraction of employing secondary, the phosphoric acid purification device of washing and back extraction, extraction plant comprises extraction plant secondary mixing tank 9 and extraction plant secondary phase splitting device 10, 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, extraction plant secondary mixed phase fluid outlet 13 are 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 by pipeline, extraction plant secondary heavy out 16 is connected with extraction plant dispersed phase fluid inlet 4 by pipeline, and extraction plant secondary light phase export 15 is connected with washing device one-level solvent inlet 33;

Washing device comprises washing device secondary mulser 34 and washing device secondary phase splitting device 35, washing device secondary mulser 34 is provided with washing device secondary mulser import 36 and washing device secondary mulser outlet 37, washing device secondary phase splitting device 35 is provided with washing device secondary mixed phase import 38, washing device secondary heavy out 39 and washing device secondary light phase export 40, washing device secondary mulser import 36 is connected with washing device secondary detergent inlet 41 and washing device secondary solvent import 42, and washing device secondary mulser outlet 37 is connected with washing device secondary mixed phase import 38; Washing device one-level light phase export 31 is connected with washing device secondary solvent import 42 by pipeline, washing device secondary heavy out 39 is connected with washing device one-level detergent inlet 32 by pipeline, and washing device secondary light phase export 40 is connected with back extraction device continuous phase fluid inlet 54;

Back extraction device comprises back extraction device secondary mixing tank 60 and back extraction device secondary phase splitting device 61, back extraction device secondary mixing tank 60 is provided with back extraction device secondary continuous phase fluid inlet 62, back extraction device secondary dispersed phase fluid inlet 63 and back extraction device secondary mixed phase fluid outlet 64, back extraction device secondary phase splitting device 61 is provided with back extraction device secondary mixed phase import 65, back extraction device secondary heavy out 67 and back extraction device secondary light phase export 66, and back extraction device secondary mixed phase fluid outlet 64 is connected with back extraction device secondary mixed phase import 65; Back extraction device light phase export 58 is connected with back extraction device secondary continuous phase fluid inlet 62 by pipeline, back extraction device secondary heavy out 67 is connected with back extraction device dispersed phase fluid inlet 55 by pipeline, and back extraction device secondary light phase export 66 is connected with extraction plant continuous phase fluid inlet 3.All the other are with embodiment 1.

During use, the phosphoric acid that extraction plant secondary heavy out 16 comes out, under the effect of pump, return extraction plant dispersed phase fluid inlet 4, extraction agent (from the no-load solvent of back extraction device secondary light phase export 66) enters extraction plant mixing tank 1 from extraction plant continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished 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, enters extraction plant phase splitting device 2 by extraction plant phase splitting device mixed phase import 6.In extraction plant phase splitting device 2, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity in the phosphoric acid enters heavy phase becomes raffinate from 8 discharges of extraction plant heavy out.Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant light phase export 7, enters extraction plant secondary mixing tank 9 through extraction plant secondary continuous phase fluid inlet 11 under the effect of pump.Feed phosphoric acid (fresh phosphoric) enters extraction plant secondary mixing tank 9 through extraction plant secondary dispersed phase fluid inlet 12, efficient mass transfer effect by extraction plant secondary mixing tank 9, further improve the phosphoric acid extraction rate, the mixed phase that forms comes out from extraction plant secondary mixed phase fluid outlet 13, enter extraction plant secondary phase splitting device 10 by extraction plant secondary phase splitting device mixed phase import 14, in extraction plant secondary phase splitting device 10, realize the layering of mixed phase, what form is light, heavy two-phase, most of phosphoric acid is extracted the agent extraction and enters and gently form loaded solvent mutually and enter washing device from extraction plant secondary light phase export 15, heavy phase is then returned extraction plant mixing tank 1 by extraction plant heavy out 16, thereby realizes extracting and separating.

At washing device, the phosphoric acid that washing device secondary heavy out 39 comes out, under the effect of pump, enter washing device one-level mulser 25 from washing device one-level solvent inlet 33 by washing device one-level mulser import 27 from washing device one-level detergent inlet 32, 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 25, the mixed phase that forms comes out from washing device one-level mulser outlet 28, enters washing device one-level phase splitting device 26 by washing device one-level mixed phase import 29.In washing device one-level phase splitting device 26, 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 30, the loaded solvent of being taken off partial impurities comes out from washing device one-level light phase export 31, enters washing device secondary mulser 34 through washing device secondary solvent import 42 under the effect of pump.Washing acid (purifying phosphoric acid) enters washing device secondary mulser 34 through washing device secondary detergent inlet 41, efficient mass transfer effect by washing device secondary mulser 34, further improve the molten washing composition effect of load, the mixed phase that forms comes out from washing device secondary mulser outlet 37, enter washing device secondary phase splitting device 35 by washing device secondary mixed phase import 38, in washing device secondary phase splitting device 35, realize the layering of mixed phase, what form is light, heavy two-phase, by phosphoric acid purification loaded solvent enter back extraction device from washing device secondary light phase export 40, the phosphoric acid in the loaded solvent enters heavy phase and returns washing device one-level mulser 25 by washing device secondary heavy out 39.

At back extraction device, the phosphoric acid that back extraction device secondary heavy out 67 comes out, the loaded solvent that return back extraction device dispersed phase fluid inlet 55 under the effect of pump, comes from washing device enters back extraction device mixing tank 52 from back extraction device continuous phase fluid inlet 54, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mixing tank 52, the mixed phase that forms comes out from back extraction device mixed phase fluid outlet 56, enters back extraction device phase splitting device 53 by back extraction device mixed phase import 57.In back extraction device phase splitting device 53, 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 59 discharges of back extraction device heavy out, the loaded solvent of taking off part phosphoric acid comes out from back extraction device light phase export 58, enters back extraction device secondary mixing tank 60 through back extraction device secondary continuous phase fluid inlet 62 under the effect of pump.De-salted water enters back extraction device secondary mixing tank 60 through back extraction device secondary dispersed phase fluid inlet 63, efficient mass transfer effect by back extraction device secondary mixing tank 60, further improve the molten back extraction effect of load, the mixed phase that forms comes out from back extraction device secondary mixed phase fluid outlet 64, enter back extraction device secondary phase splitting device 61 by back extraction device secondary mixed phase import 65, in back extraction device secondary phase splitting device 61, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent of taking off phosphoric acid becomes no-load solvent and returns extraction plant from back extraction device secondary light phase export 66, phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device mixing tank 52 by back extraction device secondary heavy out 67, thereby finishes the back extraction process.

Embodiment 3

Referring to Fig. 3, adopt three grades of extractions, the phosphoric acid purification device of washing and back extraction, extraction plant comprises three grades of mixing tanks 17 of extraction plant and three grades of phase-splitting equipment 18 of extraction plant, three grades of mixing tanks 17 of extraction plant are provided with three grades of continuous phase fluid inlets 19 of extraction plant, extraction plant disperses phase fluid inlet 20 and three grades of mixed phase fluid outlets 21 of extraction plant for three grades, three grades of phase-splitting equipment 18 of extraction plant are provided with three grades of mixed phase imports 22 of extraction plant, three grades of heavy outs 24 of extraction plant and three grades of light phase exports 23 of extraction plant, three grades of mixed phase fluid of extraction plant outlet 21 are connected with three grades of mixed phase imports 22 of extraction plant; Three grades of continuous phase fluid inlets 19 of extraction plant secondary light phase export 15 and extraction plant are connected, three grades of heavy outs 24 of extraction plant are connected with extraction plant secondary dispersed phase fluid inlet 12, and three grades of light phase exports 23 of extraction plant are connected with washing device one-level solvent inlet 33;

Washing device comprises three grades of mulsers 43 of washing device and three grades of phase-splitting equipment 44 of washing device, three grades of mulsers 43 of washing device are provided with three grades of mulser imports 45 of washing device and three grades of mulser outlets 46 of washing device, three grades of phase-splitting equipment 44 of washing device are provided with three grades of mixed phase imports 47 of washing device, three grades of heavy outs 48 of washing device and three grades of light phase exports 49 of washing device, three grades of detergent inlet 50 of three grades of mulser imports 45 of washing device and washing device and three grades of solvent inlets 51 of washing device are connected, and three grades of mulsers of washing device outlet 46 is connected with three grades of mixed phase imports 47 of washing device; Three grades of solvent inlets 51 of washing device secondary light phase export 40 and washing device are connected, and three grades of heavy outs 48 of washing device are connected with washing device secondary detergent inlet 41, and three grades of light phase exports 49 of washing device are connected with back extraction device continuous phase fluid inlet 54;

Back extraction device comprises three grades of mixing tanks 68 of back extraction device and three grades of phase-splitting equipment 69 of back extraction device, three grades of mixing tanks 68 of back extraction device are provided with three grades of continuous phase fluid inlets 70 of back extraction device, back extraction device disperses phase fluid inlet 71 and three grades of mixed phase fluid outlets 72 of back extraction device for three grades, three grades of phase-splitting equipment 69 of back extraction device are provided with three grades of mixed phase imports 73 of back extraction device, three grades of heavy outs 75 of back extraction device and three grades of light phase exports 74 of back extraction device, and three grades of mixed phase fluid of back extraction device outlet 72 is connected with three grades of mixed phase imports 73 of back extraction device; Three grades of continuous phase fluid inlets 70 of back extraction device secondary light phase export 66 and back extraction device are connected, three grades of heavy outs 75 of back extraction device are connected with back extraction device secondary dispersed phase fluid inlet 63, and three grades of light phase exports 74 of back extraction device are connected with extraction plant continuous phase fluid inlet 3.All the other are with embodiment 2.

During use, the phosphoric acid that extraction plant secondary extraction plant heavy out 16 comes out, under the effect of pump, return extraction plant dispersed phase fluid inlet 4, extraction agent (from the no-load solvent of three grades of light phase exports 74 of back extraction device) enters extraction plant mixing tank 1 from extraction plant continuous phase fluid inlet 3, extraction agent and phosphoric acid are finished 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, enters extraction plant phase splitting device 2 by extraction plant phase splitting device mixed phase import 6.In extraction plant phase splitting device 2, realize the layering of mixed phase, light, the heavy two-phase of formation.Impurity in the phosphoric acid enters heavy phase becomes raffinate from 8 discharges of extraction plant heavy out.Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction plant light phase export 7, enters extraction plant secondary mixing tank 9 through extraction plant secondary continuous phase fluid inlet 11 under the effect of pump.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, loaded solvent and phosphoric acid enter extraction plant phase splitting device 10 finish mass transfer in extraction plant secondary mixing tank 9 after, after extraction plant phase splitting device 10 is realized phase-splitting, heavy phase is returned extraction plant mixing tank 1 from extraction plant heavy out 16, loaded solvent comes out from extraction plant secondary light phase export 15, under the effect of pump, enter the mouth 19 through three grades of continuous phase fluids of extraction plant extraction plant, feed phosphoric acid (fresh phosphoric) disperses phase fluid inlet 20 to enter three grades of mixing tanks 17 of extraction plant through three grades of extraction plants, efficient mass transfer effect by multi-level mixer has improved the phosphoric acid extraction rate as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 21 of extraction plant, enter three grades of phase-splitting equipment 18 of extraction plant by three grades of phase-splitting equipment of extraction plant mixed phase import 22, in three grades of phase-splitting equipment 18 of extraction plant, realize the layering of mixed phase, light, the heavy two-phase that forms, most of phosphoric acid is extracted the agent extraction and enters and gently form loaded solvent mutually and come out to enter washing device from three grades of light phase exports of extraction plant 23, heavy phase is then returned extraction plant secondary mixing tank 9 by three grades of heavy outs 24 of extraction plant, thereby realizes extracting and separating.

At washing device, the phosphoric acid that washing device secondary heavy out 39 comes out, under the effect of pump, enter washing device one-level mulser 25 from washing device one-level solvent inlet 33 by washing device one-level mulser import 27 from washing device one-level detergent inlet 32, 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 25, the mixed phase that forms comes out from washing device one-level mulser outlet 28, enters washing device one-level phase splitting device 26 by washing device one-level mixed phase import 29.In washing device one-level phase splitting device 26, 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 30, the loaded solvent of being taken off partial impurities comes out from washing device one-level light phase export 31, enters washing device secondary mulser 34 through washing device secondary solvent import 42 under the effect of pump.The phosphoric acid that returns from three grades of heavy outs 48 of washing device enters washing device secondary mulser 34 through washing device secondary detergent inlet 41, efficient mass transfer effect by washing device secondary mulser 34, further improve the molten washing composition effect of load, the mixed phase that forms comes out from washing device secondary mulser outlet 37, enter washing device secondary phase splitting device 35 by washing device secondary mixed phase import 38, in washing device secondary phase splitting device 35, realize the layering of mixed phase, light, the heavy two-phase of formation.Heavy phase is returned washing device one-level mulser 25 by washing device secondary heavy out 39; The loaded solvent that comes out from washing device secondary phase splitting device 35 light phase exports, under the effect of pump, enter three grades of mulsers 43 of washing device through three grades of detergent inlet 50 of washing device through three grades of solvent inlets 51 of washing device, washing acid (purifying phosphoric acid), by the efficient mass transfer effect of multistage mulser, improved phosphoric acid washing agent effect as much as possible; The mixed phase that forms comes out from three grades of mulser outlets 46 of washing device, enters three grades of phase-splitting equipment 44 of washing device by three grades of mixed phase imports 47 of washing device, realizes the layering of mixed phase in three grades of phase-splitting equipment 44 of washing device, light, the heavy two-phase of formation.By phosphoric acid purification loaded solvent come out to enter back extraction device from three grades of light phase exports of washing device 49, the impurity in the loaded solvent enters heavy phase and returns washing device secondary mulser 34 by three grades of heavy outs 48 of washing device.By three grades of washings, the impurity in the loaded solvent enters heavy phase to be become and washes spent acid and finally discharge from washing device one-level heavy out 30.All the other principle of work are with embodiment 2.

At back extraction device, the phosphoric acid that back extraction device back extraction device secondary heavy out 67 comes out, under the effect of pump, return back extraction device dispersed phase fluid inlet 55, enter back extraction device mixing tank 52 from back extraction device continuous phase fluid inlet 54 from the loaded solvent of washing device, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device mixing tank 52, the mixed phase that forms comes out from back extraction device mixed phase fluid outlet 56, enters back extraction device phase splitting device 53 by back extraction device mixed phase import 57.In back extraction device phase splitting device 53, 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 59 discharges of back extraction device heavy out, the loaded solvent of taking off part phosphoric acid comes out from back extraction device light phase export 58, enters back extraction device secondary mixing tank 60 through back extraction device secondary continuous phase fluid inlet 62 under the effect of pump.The phosphoric acid that comes out from three grades of heavy outs 75 of back extraction device returns back extraction device secondary dispersed phase fluid inlet 63, effect of mass transmitting by back extraction device secondary mixing tank 60, the mixed phase that forms comes out from back extraction device secondary mixed phase fluid outlet 64, enter back extraction device secondary phase splitting device 61 by back extraction device secondary mixed phase import 65, in back extraction device secondary phase splitting device 61, realize the layering of mixed phase, what form is light, heavy two-phase, the loaded solvent that also contains part phosphoric acid comes out from back extraction device secondary light phase export 66, enters three grades of mixing tanks 68 of back extraction device through three grades of continuous phase fluid inlets 70 of back extraction device under the effect of pump.De-salted water disperses phase fluid inlet 71 to enter three grades of mixing tanks 68 of back extraction device through three grades of back extraction devices, and the efficient mass transfer effect by multistage back extraction device mixing tank has improved the back extraction effect as much as possible; The mixed phase that forms comes out from three grades of mixed phase fluid outlets 72 of back extraction device, enter three grades of phase-splitting equipment 69 of back extraction device by three grades of mixed phase imports 73 of back extraction device, in three grades of phase-splitting equipment 69 of back extraction device, realize the layering of mixed phase, light, the heavy two-phase that forms, the loaded solvent of taking off phosphoric acid becomes no-load solvent and comes out to return back extraction device from three grades of light phase exports of back extraction device 74, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device secondary mixing tank 60 by three grades of heavy outs 75 of back extraction device.Return collection by three grades, the phosphoric acid in the loaded solvent enters heavy phase to be become purifying phosphoric acid and finally discharges from back extraction device phase splitting device heavy phase mouth, thereby finishes the back extraction process.

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 CN1736577A, open day: on 02 22nd, 2006, disclosed " a kind of multi-channeled micro-structured reactor ".

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

Claims

1, a kind of phosphoric acid purification device, comprise extraction plant, washing device and back extraction device, it is characterized in that: extraction plant light phase export (7) is connected with washing device one-level solvent inlet (33), washing device one-level light phase export (31) is connected with back extraction device continuous phase fluid inlet (54), and back extraction device light phase export (58) is connected with extraction plant continuous phase fluid inlet (3);

Extraction plant comprises extraction plant mixing tank (1) and extraction plant phase splitting device (2), 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);

Washing device comprises washing device one-level mulser (25) and washing device one-level phase splitting device (26), washing device one-level mulser (25) is provided with washing device one-level mulser import (27) and washing device one-level mulser outlet (28), washing device one-level phase splitting device (26) is provided with washing device one-level mixed phase import (29), washing device one-level heavy out (30) and washing device one-level light phase export (31), washing device one-level mulser import (27) is connected with washing device one-level detergent inlet (32) and washing device one-level solvent inlet (33), and washing device one-level mulser outlet (28) is connected with washing device one-level mixed phase import (29);

Back extraction device comprises back extraction device mixing tank (52) and back extraction device phase splitting device (53), back extraction device mixing tank (52) is provided with back extraction device continuous phase fluid inlet (54), back extraction device dispersed phase fluid inlet (55) and back extraction device mixed phase fluid outlet (56), back extraction device phase splitting device (53) is provided with back extraction device mixed phase import (57), back extraction device heavy out (59) and back extraction device light phase export (58), and back extraction device mixed phase fluid outlet (56) is connected with back extraction device mixed phase import (57).

2, phosphoric acid purification device as claimed in claim 1, it is characterized in that: extraction plant comprises extraction plant secondary mixing tank (9) and extraction plant secondary phase splitting device (10), 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), 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) by pipeline, extraction plant secondary heavy out (16) is connected with extraction plant dispersed phase fluid inlet (4) by pipeline, and extraction plant secondary light phase export (15) is connected with washing device one-level solvent inlet (33);

Washing device comprises washing device secondary mulser (34) and washing device secondary phase splitting device (35), washing device secondary mulser (34) is provided with washing device secondary mulser import (36) and washing device secondary mulser outlet (37), washing device secondary phase splitting device (35) is provided with washing device secondary mixed phase import (38), washing device secondary heavy out (39) and washing device secondary light phase export (40), washing device secondary mulser import (36) is connected with washing device secondary detergent inlet (41) and washing device secondary solvent import (42), and washing device secondary mulser outlet (37) is connected with washing device secondary mixed phase import (38); Washing device one-level light phase export (31) is connected with washing device secondary solvent import (42) by pipeline, washing device secondary heavy out (39) is connected with washing device one-level detergent inlet (32) by pipeline, and washing device secondary light phase export (40) is connected with back extraction device continuous phase fluid inlet (54);

Back extraction device comprises back extraction device secondary mixing tank (60) and back extraction device secondary phase splitting device (61), back extraction device secondary mixing tank (60) is provided with back extraction device secondary continuous phase fluid inlet (62), back extraction device secondary dispersed phase fluid inlet (63) and back extraction device secondary mixed phase fluid outlet (64), back extraction device secondary phase splitting device (61) is provided with back extraction device secondary mixed phase import (65), back extraction device secondary heavy out (67) and back extraction device secondary light phase export (66), back extraction device mixed phase second grade fluid outlet (64) is connected with back extraction device secondary mixed phase import (65); Back extraction device light phase export (58) is connected with back extraction device secondary continuous phase fluid inlet (62) by pipeline, back extraction device secondary heavy out (67) is connected with back extraction device dispersed phase fluid inlet (55) by pipeline, and back extraction device secondary light phase export (66) is connected with extraction plant continuous phase fluid inlet (3).

3, phosphoric acid purification device as claimed in claim 2, it is characterized in that: extraction plant comprises three grades of mixing tanks of extraction plant (17) and three grades of phase-splitting equipment 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), extraction plant disperses phase fluid inlet (20) and three grades of mixed phase fluid outlets of extraction plant (21) for three grades, three grades of phase-splitting equipment of extraction plant (18) are provided with three grades of mixed phase imports of extraction plant (22), three grades of light phase exports of three grades of heavy outs of extraction plant (24) and extraction plant (23), 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 one-level solvent inlet (33);

Washing device comprises three grades of mulsers of washing device (43) and three grades of phase-splitting equipment of washing device (44), three grades of mulsers of washing device (43) are provided with three grades of mulser imports of washing device (45) and three grades of mulser outlets of washing device (46), three grades of phase-splitting equipment of washing device (44) are provided with three grades of mixed phase imports of washing device (47), three grades of light phase exports of three grades of heavy outs of washing device (48) and washing device (49), three grades of mulser imports of washing device (45) are connected with three grades of detergent inlet of washing device (50) and three grades of solvent inlets of washing device (51), and three grades of mulser outlets of washing device (46) are connected with three grades of mixed phase imports of washing device (47); Washing device secondary light phase export (40) is connected with three grades of solvent inlets of washing device (51), three grades of heavy outs of washing device (48) are connected with washing device secondary detergent inlet (41), and three grades of light phase exports of washing device (49) are connected with back extraction device continuous phase fluid inlet (54);

Back extraction device comprises three grades of mixing tanks of back extraction device (68) and three grades of phase-splitting equipment of back extraction device (69), three grades of mixing tanks of back extraction device (68) are provided with three grades of continuous phase fluid inlets of back extraction device (70), back extraction device disperses phase fluid inlet (71) and three grades of mixed phase fluid outlets of back extraction device (72) for three grades, three grades of phase-splitting equipment of back extraction device (69) are provided with three grades of mixed phase imports of back extraction device (73), three grades of light phase exports of three grades of heavy outs of back extraction device (75) and back extraction device (74), three grades of mixed phase fluid outlets of back extraction device (72) are connected with three grades of mixed phase imports of back extraction device (73); Back extraction device secondary light phase export (66) is connected with three grades of continuous phase fluid inlets of back extraction device (70), three grades of heavy outs of back extraction device (75) are connected with back extraction device secondary dispersed phase fluid inlet (63), and three grades of light phase exports of back extraction device (74) are connected with extraction plant continuous phase fluid inlet (3).