CN201426990Y - Phosphoric acid purification device - Google Patents

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 three devices adopt a single-stage phosphoric acid purification device formed by a group of mixers and phase separation facilities or multiple stages formed by connecting multiple groups of mixers and phase separation facilities; a continuous phase fluid inlet of the extraction device is connected with a final-stage light phase outlet of the back-extraction device; a continuous phase fluid inlet of the cleaning device is connected with a final-stage light phase outlet of the extraction device; and a continuous phase fluid inlet of the back-extraction device is connected with a final-stage light phase outlet of the cleaning device. The phosphoric acid purification device can enhance the mass transfer performance, improve the purification efficiency, and reduce the facility investment and the operation cost.

Description

Phosphoric acid purification device

Technical field

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

Background technology

Realize that with solvent extraction technology phosphoric acid purification is a phosphoric acid purification technology commonly used at present, solvent extraction technology generally comprises extraction, washing, reaches the back extraction operation.The chemical industry equipment that can realize extraction, washing, back extraction function at present is mainly as follows: multistage mixing-defecator, it is a kind of typically contact liquid liquid mass transfer apparatus step by step, wherein every grade comprises blender and defecator two parts, this equipment major defect has: horizontal multistage mixing-mixing channel floor space is bigger, be equipped with agitating device in each level, fluid generally needs to carry with pump flowing of inter-stage, and cost of equipment and operating cost are all bigger; Sieve-plate 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; Packed tower, the packed tower structure is simple relatively, but efficient is lower, can not be used to have the material of solid particle and easy fouling; Pulsed packed tower and pulsed perforated-plate tower, in order to improve the two-phase contact condition, strengthen mass transport process, add mechanical energy causing pulsation at packed tower and sieve-plate tower, and the generation of pulsation is realized by reciprocating pump or compressed air usually, this kind equipment mass-transfer efficiency height, but manufacturing cost is higher, the internal cleaning difficulty, and operating 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 operating cost is higher.

Blender 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 channel 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 distributor chamber in this reactor, dispersed phase fluid is passed decentralized medium and is entered the continuous phase parallel channels, under continuous phase fluid flows the shearing force effect, be dispersed into fine droplet or bubble, contact, realize rapid mixing and reaction between two-phase fluid with continuous phase fluid.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned shortcoming and a kind of mass-transfer performance of can strengthening of providing, and improves purification efficiency, reduces the phosphoric acid purification device of equipment investment and operating cost.

A kind of phosphoric acid purification device of the present utility model, comprise extraction equipment, wash mill and back extraction device, wherein: light phase export is connected with wash mill continuous phase fluid inlet in the extraction equipment, light phase export is connected with back extraction device continuous phase fluid inlet in the wash mill, and the light phase export in the back extraction device is connected with extraction equipment continuous phase fluid inlet.

Extraction equipment comprises extraction equipment blender and extraction equipment phase splitting device, the extraction equipment blender is provided with extraction equipment continuous phase fluid inlet, extraction equipment dispersed phase fluid inlet and the outlet of extraction equipment mixed phase fluid, the extraction equipment phase splitting device is provided with the extraction equipment phase splitting device and mixes phase import, extraction equipment heavy out and extraction equipment light phase export, and the outlet of extraction equipment mixed phase fluid mixes import mutually with the extraction equipment phase splitting device and connects;

Wash mill comprises wash mill blender and wash mill phase splitting device, the wash mill blender is provided with wash mill continuous phase fluid inlet, wash mill dispersed phase fluid inlet and the outlet of wash mill mixed phase fluid, the wash mill phase splitting device is provided with the wash mill phase splitting device and mixes phase import, wash mill heavy out and wash mill light phase export, and the outlet of wash mill mixed phase fluid mixes import mutually with the wash mill phase splitting device and connects;

Back extraction device comprises back extraction device blender and back extraction device phase splitting device, the back extraction device blender is provided with back extraction device continuous phase fluid 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 back extraction device phase splitting device and mixes phase import, back extraction device heavy out and back extraction device light phase export, and the outlet of back extraction device mixed phase fluid mixes import mutually with the back extraction device phase splitting device and connects;

Above-mentioned phosphoric acid purification device, it is characterized in that: light phase export is connected with secondary continuous phase fluid inlet by the pipeline that is provided with pump in the extraction equipment, the heavy out of secondary phase splitting device is connected with the dispersed phase fluid inlet by the pipeline that is provided with pump, the secondary light phase export is connected with wash mill continuous phase fluid inlet

Light phase export in the wash mill, be connected with secondary continuous phase fluid inlet by the pipeline that is provided with pump; The heavy out of secondary phase splitting device, the pipeline by being provided with pump are connected with wash mill dispersed phase fluid inlet, and the secondary light phase export enters the mouth with the back extraction device continuous phase fluid and is connected;

Light phase export in the back extraction device, the pipeline by being provided with pump are connected with back extraction device secondary continuous phase fluid inlet; The heavy out of secondary phase splitting device, the pipeline by being provided with pump are connected with back extraction device dispersed phase fluid inlet, and the secondary light phase export enters the mouth with the extraction equipment continuous phase fluid and is connected.

Above-mentioned phosphoric acid purification device, wherein: three grades of continuous phase fluid inlets of extraction equipment secondary light phase export and extraction equipment are connected, and three grades of light phase exports are connected with wash mill continuous phase fluid inlet; Three grades of continuous phase fluid inlets of secondary light phase export and wash mill are connected in the wash mill, and three grades of heavy outs are connected with secondary dispersed phase fluid inlet, and three grades of light phase exports are connected with back extraction device continuous phase fluid inlet; Three grades of continuous phase fluid inlets of secondary light phase export and back extraction device are connected in the back extraction device, and three grades of heavy outs are connected with back extraction device secondary dispersed phase fluid inlet, and three grades of light phase exports are connected with extraction equipment continuous phase fluid inlet.

The utility model compared with prior art, as can be known from the above technical solutions, require difference according to purifying, constitute extraction equipment, wash mill and the back extraction device of phosphoric acid purification device, all can adopt one group of blender and phase splitting device the single-stage phosphoric acid purification device or by multiple mixer and phase splitting device be formed by connecting multistage.In multistage phosphoric acid purification device, feed phosphoric acid (fresh phosphoric), washing acid (purifying phosphoric acid), desalted water are all added by final stage blender respective inlets, the no-load solvent of extraction equipment continuous phase fluid inlet is from back extraction device final stage light phase export, the loaded solvent of wash mill continuous phase fluid inlet is from extraction equipment final stage light phase export, and the loaded solvent of back extraction device continuous phase fluid inlet is from wash mill final stage light phase export.The blender mass transfer area is big, the mass-transfer efficiency height.The mixed liquor that comes out from blender is easy to phase-splitting, guarantees to divide phase effect; The purifying phosphoric acid impurity content is low, but by refining production food-grade and electron-level phosphoric acid; System's material loading is little, avoids hazardous material (fluids) (as phosphoric acid, organic extractant) to leak in a large number and the peace ring accident that causes; Occupation area of equipment is little, and appliance arrangement is arranged simple, and factory building can be realized miniaturization; Separate unit blender cost is low, can save equipment investment.

Description of drawings

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

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

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

Mark among the figure:

1, the extraction equipment blender, 2, the extraction equipment phase splitting device, 3, extraction equipment continuous phase fluid inlet, 4, extraction equipment dispersed phase fluid inlet, 5, the outlet of extraction equipment mixed phase fluid, 6, extraction equipment mixes the phase import, 7, the extraction equipment light phase export, 8, the extraction equipment heavy out, 9, extraction equipment secondary blender, 10, extraction equipment secondary phase splitting device, 11, extraction equipment secondary continuous phase fluid inlet, 12, extraction equipment secondary dispersed phase fluid inlet, 13, the outlet of extraction equipment secondary mixed phase fluid, 14, the extraction equipment secondary mixes the phase import, 15, extraction equipment secondary light phase export, 16, extraction equipment secondary heavy out, 17, three grades of blenders of extraction equipment, 18, three grades of phase-splitting equipment of extraction equipment, 19, three grades of continuous phase fluid inlets of extraction equipment, 20, extraction equipment disperses phase fluid inlet, 21 for three grades, three grades of mixed phase fluid outlets of extraction equipment, 22, extraction equipment mixes the phase import for three grades, 23, three grades of light phase exports of extraction equipment, 24, three grades of heavy outs of extraction equipment.25, the wash mill blender, 26, the wash mill phase splitting device, 27, wash mill continuous phase fluid inlet, 28, wash mill dispersed phase fluid inlet, 29, the outlet of wash mill mixed phase fluid, 30, wash mill mixes the phase import, 31, the wash mill light phase export, 32, the wash mill heavy out, 33, wash mill secondary blender, 34, wash mill secondary phase splitting device, 35, wash mill secondary continuous phase fluid inlet, 36, wash mill secondary dispersed phase fluid inlet, 37, the outlet of wash mill secondary mixed phase fluid, 38, the wash mill secondary mixes the phase import, 39, wash mill secondary light phase export, 40, wash mill secondary heavy out, 41, three grades of blenders of wash mill, 42, three grades of phase-splitting equipment of wash mill, 43, three grades of continuous phase fluid inlets of wash mill, 44, wash mill disperses the phase fluid inlet for three grades, 45, three grades of mixed phase fluid outlets of wash mill, 46, wash mill mixes the phase import for three grades, 47, three grades of light phase exports of wash mill, 48, three grades of heavy outs of wash mill, 49, the back extraction device blender, 50, the back extraction device phase splitting device, 51, back extraction device continuous phase fluid inlet, 52, back extraction device dispersed phase fluid inlet, 53, the outlet of back extraction device mixed phase fluid, 54, back extraction device mixes the phase import, 55, the back extraction device light phase export, 56, the back extraction device heavy out, 57, back extraction device secondary blender, 58, back extraction device secondary phase splitting device, 59, back extraction device secondary continuous phase fluid inlet, 60, back extraction device secondary dispersed phase fluid inlet, 61, the outlet of back extraction device secondary mixed phase fluid, 62, the back extraction device secondary mixes the phase import, 63, back extraction device secondary light phase export, 64, back extraction device secondary heavy out, 65, three grades of blenders of back extraction device, 66, three grades of phase-splitting equipment of back extraction device, 67, three grades of continuous phase fluid inlets of back extraction device, 68, back extraction device disperses the phase fluid inlet for three grades, 69, three grades of mixed phase fluid outlets of back extraction device, 70, back extraction device mixes the phase import for three grades, 71, three grades of light phase exports of back extraction device, 72, three grades of heavy outs of back extraction device.

The specific embodiment

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

Embodiment 1

Referring to Fig. 1, adopt the phosphoric acid purification device of single-stage extraction, washing and back extraction, comprise extraction equipment, wash mill and back extraction device, wherein: light phase export 7 is connected with wash mill continuous phase fluid inlet 27 in the extraction equipment, light phase export 31 is connected with back extraction device continuous phase fluid inlet 51 in the wash mill, and the light phase export 55 in the back extraction device is connected with extraction equipment continuous phase fluid inlet 3; Extraction equipment comprises extraction equipment blender 1 and extraction equipment phase splitting device 2, extraction equipment blender 1 is provided with extraction equipment continuous phase fluid inlet 3, extraction equipment dispersed phase fluid inlet 4, extraction equipment mixed phase fluid outlet 5, extraction equipment phase splitting device 2 is provided with the extraction equipment phase splitting device and mixes phase import 6, extraction equipment heavy out 8 and extraction equipment light phase export 7, and the outlet 5 of extraction equipment mixed phase fluid mixes import mutually 6 with the extraction equipment phase splitting device and connects;

Wash mill comprises wash mill blender 25 and wash mill phase splitting device 26, wash mill blender 25 is provided with wash mill continuous phase fluid inlet 27, wash mill dispersed phase fluid inlet 28 and wash mill mixed phase fluid outlet 29, wash mill phase splitting device 26 is provided with the wash mill phase splitting device and mixes phase import 30, wash mill heavy out 32 and wash mill light phase export 31, and the outlet 29 of wash mill mixed phase fluid mixes import mutually 30 with the wash mill phase splitting device and connects;

Back extraction device comprises back extraction device blender 49 and back extraction device phase splitting device 50, back extraction device blender 49 is provided with back extraction device continuous phase fluid inlet 51, back extraction device dispersed phase fluid inlet 52 and back extraction device mixed phase fluid outlet 53, back extraction device phase splitting device 50 is provided with the back extraction device phase splitting device and mixes phase import 54, back extraction device heavy out 56 and back extraction device light phase export 55, and the outlet 53 of back extraction device mixed phase fluid mixes import mutually 54 with the back extraction device phase splitting device and connects;

During use, at extraction equipment, phosphoric acid enters blender 1 from extraction equipment dispersed phase fluid inlet 4, extractant (from the no-load solvent of back extraction device light phase export 55) from extraction equipment continuous phase fluid inlet 3, extractant and phosphoric acid are finished the efficient mass transfer process in blender 1, the mixing that forms is come out from extraction equipment mixed phase fluid outlet 5, mixes phase import 6 by the extraction equipment phase splitting device and enters extraction equipment phase splitting device 2.In extraction equipment phase splitting device 2, realize mixing the layering of phase, light, the heavy two-phase of formation.Phosphoric acid is extracted agent extraction to be become loaded solvent and enters wash mill from extraction equipment light phase export 7, and the impurity in the phosphoric acid enters heavy phase to be become raffinate and discharge from extraction equipment heavy out 8, thereby realizes extract and separate.

At wash mill, purifying phosphoric acid enters wash mill blender 25 from wash mill dispersed phase fluid inlet 28, the loaded solvent that comes from extraction equipment from wash mill continuous phase fluid inlet 27, loaded solvent and phosphoric acid are finished the efficient mass transfer process in wash mill blender 25, the mixing that forms is come out from wash mill mixed phase fluid outlet 29, mixes phase import 30 by the wash mill phase splitting device and enters wash mill phase splitting device 26.In wash mill phase splitting device 26, realize mixing the layering of 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 wash mill heavy out 32, be washed the loaded solvent that has purified and enter back extraction device, thereby realize washing, purifying from wash mill light phase export 31.

At back extraction device, desalted water is from back extraction device dispersed phase fluid inlet 52, enter back extraction device blender 49 from the loaded solvent of wash mill from back extraction device continuous phase fluid inlet 51, loaded solvent and desalted water are finished the efficient mass transfer process in back extraction device blender 49, the mixing that forms is come out from back extraction device mixed phase fluid outlet 53, mixes phase import 54 by the back extraction device phase splitting device and enters back extraction device phase splitting device 50.In back extraction device phase splitting device 50, realize mixing the layering of phase, light, the heavy two-phase that forms, phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 56 discharges of back extraction device heavy out, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and return extraction equipment from back extraction device light phase export 55, thereby realizes recycling of extractant.

Embodiment 2

Referring to Fig. 2, adopt the phosphoric acid purification device of secondary extraction, washing and back extraction, comprise extraction equipment, wash mill and back extraction device, extraction equipment light phase export 7 is connected with extraction equipment secondary continuous phase fluid inlet 11 by the pipeline that is provided with pump, extraction equipment secondary heavy out 16 is connected with extraction equipment dispersed phase fluid inlet 4 by the pipeline that is provided with pump, extraction equipment secondary light phase export 15 and wash mill continuous phase fluid inlet 27 is connected, and wash mill light phase export 31, the pipeline by being provided with pump and wash mill secondary continuous phase fluid enter the mouth and 35 be connected; Wash mill secondary heavy out 40, the pipeline by being provided with pump and wash mill dispersed phase fluid inlet 28 are connected, wash mill secondary light phase export 39 and back extraction device continuous phase fluid inlet 51 is connected, and back extraction device light phase export 55, the pipeline by being provided with pump and back extraction device secondary continuous phase fluid enter the mouth and 59 be connected; Back extraction device secondary heavy out 64, the pipeline by being provided with pump and back extraction device dispersed phase fluid inlet 52 are connected, and back extraction device secondary light phase export 63 and extraction equipment continuous phase fluid enter the mouth and 3 be connected.All the other are with embodiment 1.

During use, the phosphoric acid that extraction equipment secondary heavy out 16 comes out, under the effect of pump, return extraction equipment dispersed phase fluid inlet 4, extractant (from the no-load solvent of back extraction device light phase export 63) enters extraction equipment blender 1 from extraction equipment continuous phase fluid inlet 3, extractant and phosphoric acid are finished the efficient mass transfer process in extraction equipment blender 1, the mixing that forms is come out from extraction equipment mixed phase fluid outlet 5, mixes phase import 6 by the extraction equipment phase splitting device and enters extraction equipment phase splitting device 2.In extraction equipment phase splitting device 2, realize mixing the layering of phase, light, the heavy two-phase of formation.Impurity in the phosphoric acid enters heavy phase becomes raffinate from 8 discharges of extraction equipment heavy out.Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction equipment light phase export 7, enters extraction equipment secondary blender 9 through extraction equipment secondary continuous phase fluid inlet 11 under the effect of pump.Feed phosphoric acid (fresh phosphoric) enters extraction equipment secondary blender 9 through extraction equipment secondary dispersed phase fluid inlet 12, efficient mass transfer effect by extraction equipment secondary blender 9, further improve the phosphoric acid extraction rate, the mixing that forms is come out from extraction equipment secondary mixed phase fluid outlet 13, mix phase import 14 by extraction equipment secondary phase splitting device and enter extraction equipment secondary phase splitting device 10, in extraction equipment secondary phase splitting device 10, realize mixing the layering of 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 wash mill from extraction equipment secondary light phase export 15, heavy phase is then returned extraction equipment blender 1 by extraction equipment heavy out 16, thereby realizes extract and separate.

At wash mill, the phosphoric acid that wash mill secondary heavy out 40 comes out, the loaded solvent that return wash mill dispersed phase fluid inlet 28 under the effect of pump, comes from extraction equipment enters wash mill blender 25 from wash mill continuous phase fluid inlet 27, loaded solvent and phosphoric acid are finished the efficient mass transfer process in wash mill blender 25, the mixing that forms is come out from wash mill mixed phase fluid outlet 29, mixes phase import 30 by the wash mill phase splitting device and enters wash mill phase splitting device 26.In wash mill phase splitting device 26, realize mixing the layering of 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 wash mill heavy out 32, be washed the loaded solvent that has purified and come out, under the effect of pump, enter wash mill secondary blender 33 through wash mill secondary continuous phase fluid inlet 35 from wash mill light phase export 31.Washing acid (purifying phosphoric acid) enters wash mill secondary blender 33 through wash mill secondary dispersed phase fluid inlet 36, efficient mass transfer effect by wash mill secondary blender 33, further improve the molten clean result of load, the mixing that forms is come out from wash mill secondary mixed phase fluid outlet 37, mix phase import 38 by wash mill secondary phase splitting device and enter wash mill secondary phase splitting device 34, in wash mill secondary phase splitting device 34, realize mixing the layering of phase, what form is light, heavy two-phase, be washed the loaded solvent that has purified and enter back extraction device from wash mill secondary light phase export 39, impurity in the loaded solvent enters heavy phase and returns wash mill blender 25 by wash mill heavy out 40, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that back extraction device back extraction device secondary heavy out 64 comes out, the loaded solvent that return back extraction device back extraction device dispersed phase fluid inlet 52 under the effect of pump, comes from wash mill enters back extraction device blender 49 from back extraction device continuous phase fluid inlet 51, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device blender 49, the mixing that forms is come out from back extraction device mixed phase fluid outlet 53, mixes phase import 54 by the back extraction device phase splitting device and enters back extraction device phase splitting device 50.In back extraction device phase splitting device 50, realize mixing the layering of phase, light, the heavy two-phase of formation.Phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 56 discharges of back extraction device heavy out, the loaded solvent of being taken off part phosphoric acid comes out from back extraction device light phase export 55, enters back extraction device secondary blender 57 through back extraction device secondary continuous phase fluid inlet 59 under the effect of pump.Desalted water enters back extraction device secondary blender 57 through back extraction device secondary dispersed phase fluid inlet 60, efficient mass transfer effect by back extraction device secondary blender 57, further improve the molten back extraction effect of load, the mixing that forms is come out from back extraction device secondary mixed phase fluid outlet 61, mix phase import 62 by back extraction device secondary phase splitting device and enter back extraction device secondary phase splitting device 58, in back extraction device secondary phase splitting device 58, realize mixing the layering of phase, what form is light, heavy two-phase, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and return extraction equipment from back extraction device secondary light phase export 63, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device blender 49 by back extraction device heavy out 64.

Embodiment 3

Referring to Fig. 3, adopt three grades of extractions, the phosphoric acid purification device of washing and back extraction, comprise extraction equipment, wash mill and back extraction device, three grades of continuous phase fluid inlets 19 of extraction equipment secondary light phase export 15 and extraction equipment are connected, three grades of heavy outs 24 of extraction equipment are connected with extraction equipment secondary dispersed phase fluid inlet 12, three grades of light phase exports 23 of extraction equipment are connected with wash mill continuous phase fluid inlet 27, three grades of continuous phase fluid inlets 43 of wash mill secondary light phase export 39 and wash mill are connected, three grades of heavy outs 48 of wash mill are connected with wash mill secondary dispersed phase fluid inlet 36, three grades of light phase exports 47 of wash mill are connected with back extraction device continuous phase fluid inlet 51, three grades of continuous phase fluid inlets 67 of back extraction device secondary light phase export 63 and back extraction device are connected, three grades of heavy outs 72 of back extraction device are connected with back extraction device secondary dispersed phase fluid inlet 60, and three grades of light phase exports 71 of back extraction device are connected with extraction equipment continuous phase fluid inlet 3.All the other are with embodiment 2.

During use, the phosphoric acid that extraction equipment secondary extraction equipment heavy out 16 comes out, under the effect of pump, return extraction equipment dispersed phase fluid inlet 4, extractant (from the no-load solvent of back extraction device extraction equipment light phase export 71) enters extraction equipment blender 1 from extraction equipment continuous phase fluid inlet 3, extractant and phosphoric acid are finished the efficient mass transfer process in extraction equipment blender 1, the mixing that forms is come out from extraction equipment mixed phase fluid outlet 5, mixes phase import 6 by the extraction equipment phase splitting device and enters extraction equipment phase splitting device 2.In extraction equipment phase splitting device 2, realize mixing the layering of phase, light, the heavy two-phase of formation.Impurity in the phosphoric acid enters heavy phase becomes raffinate from 8 discharges of extraction equipment heavy out.Phosphoric acid is extracted agent extraction to be become loaded solvent and comes out from extraction equipment light phase export 7, enters extraction equipment secondary blender 9 through extraction equipment secondary continuous phase fluid inlet 11 under the effect of pump.The phosphoric acid that three grades of heavy outs 24 of extraction equipment come out, under the effect of pump, return extraction equipment secondary blender 9, loaded solvent and phosphoric acid enter extraction equipment phase splitting device 10 finish mass transfer in extraction equipment secondary blender 9 after, after extraction equipment phase splitting device 10 is realized phase-splitting, heavy phase is returned extraction equipment blender 1 from extraction equipment heavy out 16, loaded solvent comes out from extraction equipment secondary light phase export 15, under the effect of pump, enter the mouth 19 through three grades of continuous phase fluids of extraction equipment extraction equipment, feed phosphoric acid (fresh phosphoric) disperses phase fluid inlet 20 to enter three grades of blenders 17 of extraction equipment through three grades of extraction equipments, efficient mass transfer effect by multi-level mixer has improved the phosphoric acid extraction rate as much as possible; The mixing that forms is come out from three grades of mixed phase fluid outlets 21 of extraction equipment, mix phase import 22 by three grades of phase-splitting equipment of extraction equipment and enter three grades of phase-splitting equipment 18 of extraction equipment, in three grades of phase-splitting equipment 18 of extraction equipment, realize mixing the layering of 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 wash mill from three grades of light phase exports of extraction equipment 23, heavy phase is then returned extraction equipment secondary blender 9 by three grades of heavy outs 24 of extraction equipment, thereby realizes extract and separate.

At wash mill, the phosphoric acid that wash mill wash mill secondary heavy out 40 comes out, under the effect of pump, return wash mill dispersed phase fluid inlet 28, enter wash mill blender 25 from wash mill continuous phase fluid inlet 27 from the loaded solvent of extraction equipment, loaded solvent and phosphoric acid are finished the efficient mass transfer process in wash mill blender 25, the mixing that forms is come out from wash mill mixed phase fluid outlet 29, mixes phase import 30 by the wash mill phase splitting device and enters wash mill phase splitting device 26.In wash mill phase splitting device 26, realize mixing the layering of 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 wash mill heavy out 32, be washed the loaded solvent that has purified and come out, under the effect of pump, enter wash mill secondary blender 33 through wash mill secondary continuous phase fluid inlet 35 from wash mill light phase export 31.The phosphoric acid that comes out from three grades of heavy outs 48 of wash mill returns wash mill secondary dispersed phase fluid inlet 36, effect of mass transmitting by wash mill secondary blender 33, the mixing that forms is come out from wash mill secondary mixed phase fluid outlet 37, mix phase import 38 by wash mill secondary phase splitting device and enter wash mill secondary phase splitting device 34, in wash mill secondary phase splitting device 34, realize mixing the layering of phase, what form is light, heavy two-phase, loaded solvent comes out from wash mill secondary light phase export 39, enters three grades of blenders 41 of wash mill through three grades of continuous phase fluid inlets 43 of wash mill under the effect of pump.Washing acid (purifying phosphoric acid) disperses phase fluid inlet 44 to enter three grades of blenders 41 of wash mill through three grades of wash mills, and the efficient mass transfer effect by multistage wash mill blender has improved the phosphoric acid washing effect as much as possible; The mixing that forms is come out from three grades of mixed phase fluid outlets 45 of wash mill, mix phase import 46 by three grades of phase-splitting equipment of wash mill and enter three grades of phase-splitting equipment 42 of wash mill, in three grades of phase-splitting equipment 42 of wash mill, realize mixing the layering of phase, light, the heavy two-phase that forms, be washed the loaded solvent that has purified and come out to enter the back extraction device preface from three grades of light phase exports of wash mill 47, the impurity in the loaded solvent enters heavy phase and returns wash mill secondary blender 33 by three grades of heavy outs 48 of wash mill.By three grades of washings, the impurity major part in the loaded solvent is entered heavy phase by phosphoric acid washing and finally discharges from wash mill phase splitting device heavy phase mouth, thereby realizes washing, purifying.

At back extraction device, the phosphoric acid that back extraction device back extraction device secondary heavy out 64 comes out, the loaded solvent that return back extraction device back extraction device dispersed phase fluid inlet 52 under the effect of pump, comes from wash mill enters back extraction device blender 49 from back extraction device continuous phase fluid inlet 51, loaded solvent and phosphoric acid are finished the efficient mass transfer process in back extraction device blender 49, the mixing that forms is come out from back extraction device mixed phase fluid outlet 53, mixes phase import 54 by the back extraction device phase splitting device and enters back extraction device phase splitting device 50.In back extraction device phase splitting device 50, realize mixing the layering of phase, light, the heavy two-phase of formation.Phosphoric acid in the loaded solvent enters heavy phase becomes purifying phosphoric acid from 56 discharges of back extraction device heavy out, the loaded solvent of being taken off part phosphoric acid comes out from back extraction device light phase export 55, enters back extraction device blender 57 through back extraction device secondary continuous phase fluid inlet 59 under the effect of pump.The phosphoric acid that three grades of heavy outs 72 of back extraction device come out, under the effect of pump, return back extraction device secondary blender 57, efficient mass transfer effect by back extraction device secondary blender 57, the mixing that forms is come out from back extraction device secondary mixed phase fluid outlet 61, mix phase import 62 by back extraction device secondary phase splitting device and enter back extraction device secondary phase splitting device 58, in back extraction device secondary phase splitting device 58, realize mixing the layering of phase, what form is light, heavy two-phase, the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device blender 49 by back extraction device heavy out 64.The loaded solvent that also contains part phosphoric acid comes out from back extraction device secondary light phase export 63, under the effect of pump, disperse phase fluid inlet 68 to enter three grades of blenders 65 of back extraction device through three grades of back extraction devices through three grades of continuous phase fluid inlets 67 of back extraction device, desalted water, by the efficient mass transfer effect of multistage back extraction device blender, improved phosphoric acid back extraction effect as much as possible; The mixing that forms is come out from three grades of mixed phase fluid outlets 69 of back extraction device, mix phase import 70 by three grades of phase-splitting equipment of back extraction device and enter three grades of phase-splitting equipment 66 of back extraction device, in three grades of phase-splitting equipment 66 of back extraction device, realize mixing the layering of phase, light, the heavy two-phase that forms, loaded solvent removes and then becomes no-load solvent behind the phosphoric acid and come out to return extraction equipment from three grades of light phase exports of back extraction device 71, and the phosphoric acid in the loaded solvent enters heavy phase and returns back extraction device secondary blender 57 by three grades of heavy outs 72 of back extraction device.By three grades of back extractions, the phosphoric acid in the loaded solvent is desalted the water back extraction and enters heavy phase finally from the discharge of back extraction device phase splitting device heavy phase mouth, becomes purifying phosphoric acid.

More than blender among three embodiment, adopt 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 utility model, be not that the utility model is done any pro forma restriction, any technical solutions of the utility model content that do not break away from,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims (3)

1, a kind of phosphoric acid purification device, comprise extraction equipment, wash mill and back extraction device, it is characterized in that: light phase export in the extraction equipment (7) is connected with wash mill continuous phase fluid inlet (27), light phase export in the wash mill (31) is connected with back extraction device continuous phase fluid inlet (51), and the light phase export in the back extraction device (55) is connected with extraction equipment continuous phase fluid inlet (3);

Extraction equipment comprises extraction equipment blender (1) and extraction equipment phase splitting device (2), extraction equipment blender (1) is provided with extraction equipment continuous phase fluid inlet (3), extraction equipment dispersed phase fluid inlet (4), extraction equipment mixed phase fluid outlet (5), extraction equipment phase splitting device (2) is provided with the extraction equipment phase splitting device and mixes phase import (6), extraction equipment heavy out (8) and extraction equipment light phase export (7), and extraction equipment mixed phase fluid outlet (5) mixes import mutually (6) with the extraction equipment phase splitting device and connects;

Wash mill comprises wash mill blender (25) and wash mill phase splitting device (26), wash mill blender (25) is provided with wash mill continuous phase fluid inlet (27), wash mill dispersed phase fluid inlet (28) and wash mill mixed phase fluid outlet (29), wash mill phase splitting device (26) is provided with the wash mill phase splitting device and mixes phase import (30), wash mill heavy out (32) and wash mill light phase export (31), and wash mill mixed phase fluid outlet (29) mixes import mutually (30) with the wash mill phase splitting device and connects;

Back extraction device comprises back extraction device blender (49) and back extraction device phase splitting device (50), back extraction device blender (49) is provided with back extraction device continuous phase fluid inlet (51), back extraction device dispersed phase fluid inlet (52) and back extraction device mixed phase fluid outlet (53), back extraction device phase splitting device (50) is provided with the back extraction device phase splitting device and mixes phase import (54), back extraction device heavy out (56) and back extraction device light phase export (55), and back extraction device mixed phase fluid outlet (53) mixes import mutually (54) with the back extraction device phase splitting device and connects;

2, phosphoric acid purification device as claimed in claim 1, it is characterized in that: light phase export in the extraction equipment (7) is connected with extraction equipment secondary continuous phase fluid inlet (11) by pipeline, extraction equipment secondary heavy out (16) is connected with extraction equipment dispersed phase fluid inlet (4) by pipeline, and extraction equipment secondary light phase export (15) is connected with wash mill continuous phase fluid inlet (27);

Wash mill light phase export (31) is connected with wash mill secondary continuous phase fluid inlet (35) by pipeline, wash mill secondary heavy out (40) is connected with wash mill dispersed phase fluid inlet (28) by pipeline, and wash mill secondary light phase export (39) is connected with back extraction device continuous phase fluid inlet (51);

Back extraction device light phase export (55), be connected by pipeline and back extraction device secondary continuous phase fluid inlet (59); Back extraction device secondary heavy out (64), is connected by pipeline and back extraction device dispersed phase fluid inlet (52), back extraction device secondary light phase export (63) and extraction equipment continuous phase fluid enter the mouth (3) be connected.

3, phosphoric acid purification device as claimed in claim 2, it is characterized in that: extraction equipment secondary light phase export (15) is connected with three grades of continuous phase fluid inlets of extraction equipment (19), three grades of heavy outs of extraction equipment (24) are connected with extraction equipment secondary dispersed phase fluid inlet (12), and three grades of light phase exports of extraction equipment (23) are connected with wash mill continuous phase fluid inlet (27);

Wash mill secondary light phase export (39) is connected with three grades of continuous phase fluid inlets of wash mill (43), three grades of heavy outs of wash mill (48) are connected with wash mill secondary dispersed phase fluid inlet (36), and three grades of light phase exports of wash mill (47) are connected with back extraction device continuous phase fluid inlet (51);

Back extraction device secondary light phase export (63) is connected with three grades of continuous phase fluid inlets of back extraction device (67), three grades of heavy outs of back extraction device (72) are connected with back extraction device secondary dispersed phase fluid inlet (60), and three grades of light phase exports of back extraction device (71) are connected with extraction equipment continuous phase fluid inlet (3).

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