CN202107531U

CN202107531U - Phosphoric acid purification plant

Info

Publication number: CN202107531U
Application number: CN2011202181499U
Authority: CN
Inventors: 王邵东; 禹志宏; 申齐; 王华杰
Original assignee: Wengfu Group Co Ltd
Current assignee: Wengfu Group Co Ltd
Priority date: 2011-06-26
Filing date: 2011-06-26
Publication date: 2012-01-11
Anticipated expiration: 2021-06-26

Abstract

The utility model discloses a phosphoric acid purification plant comprising extraction equipment, cleaning equipment and reverse extraction equipment, wherein the extraction equipment selects a pulse sieve plate tower as mass transfer equipment; the cleaning equipment comprises a set of emulsion machine and split phase device and a set of mixer and split phase device, or a group or a plurality of groups of emulsion machine(s) and split phase device(s) (or mixers and split phase devices) are added on the basis of the combination of the set of emulsion machine and split phase device; the reverse extraction equipment selects a pulse sieve plate tower as mass transfer equipment; and a light phase inlet of a sieve plate tower of the extraction equipment is connected with a light phase outlet of the sieve plate tower of the reverse extraction equipment, a solvent inlet of the cleaning equipment is connected with a light phase outlet of the sieve plate tower of the extraction equipment, and a light phase inlet of the reverse extraction equipment is connected with a light phase outlet of last-stage split phase equipment of the cleaning equipment. With the phosphoric acid purification plant, the mass transfer performance can be enhanced, the purification efficiency is improved, and the equipment investment and running costs can be reduced.

Description

Phosphoric acid purification device

Technical field

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

Background technology

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

The tower that in wet phosphoric acid purifying, is used at present the back extraction operation is basic identical or similar with the tower structure that is used for extraction process, and operating method is also basic identical.But the mechanism of action of extraction and back extraction has very big difference in wet phosphoric acid purifying; Require phosphoric acid as much as possible to be diffused in the organic phase as soon as possible in the extraction process, and cation impurity get into water realization separation, so general extracting operation requires organic phase as external phase; Water is as disperse phase; And generally to have more deposition to separate out in the extraction process, and equipment is resulted in blockage easily, to the structure of tower particular requirement to be arranged; Back extraction is that the phosphoric acid in the back extraction loaded solvent is diffused into aqueous phase as soon as possible, experiment showed, that water more can reach the back extraction effect than organic phase is continuous continuously in the back extraction tower.If as the back extraction tower, the plate ring structure in the pulse plate ring tower is unfavorable for having water continuous with pulse plate ring tower, because when carrying out the water operate continuously, organic phase is easy to generate the coalescence effect and influences the back extraction effect as disperse phase; If use vibration back extraction device sieve-tray tower to be the back extraction tower, this tower is limited by equipment material, and equipment failure rate is high, and working cost is higher.

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

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

Summary of the invention

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

A kind of phosphoric acid purification device of the utility model; Comprise extraction plant, washing device and back extraction device; Wherein: extraction plant comprises sieve-tray tower and surge generator, and sieve-tray tower is made up of the body of the tower of attending clarifying chamber, middle part at top and the following clarifying chamber of bottom, and it is some that sieve plate is housed in the body of the tower; Last clarifying chamber is provided with heavy phase import of extraction plant sieve-tray tower and extraction plant sieve-tray tower light phase export, and the import of extraction plant sieve-tray tower heavy phase is communicated with the interior heavy phase distribution plate of body of the tower; Following clarifying chamber is provided with the light phase import of extraction plant sieve-tray tower, the peripheral hardware liquidometer, and the bottom is provided with extraction plant sieve-tray tower raffinate relief outlet, and the light phase import of extraction plant sieve-tray tower is communicated with the interior light distribution plate mutually of body of the tower; Surge generator is connected with following clarifying chamber;

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

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

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

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

Above-mentioned phosphoric acid purification device; Wherein: washing device comprises washing device mixing tank B and washing device phase splitting device D; Washing device mixing tank B is provided with washing device mixing tank B continuous phase fluid inlet, washing device mixing tank B dispersed phase fluid inlet and the outlet of washing device mixing tank B mixed phase fluid; Washing device phase splitting device D is provided with the import of washing device phase splitting device D mixed phase, washing device phase splitting device D light phase export and washing device phase splitting device D heavy out, and the outlet of washing device mixing tank B mixed phase fluid is connected with the import of washing device phase splitting device D mixed phase; Washing device phase splitting device B light phase export is connected with washing device mixing tank B continuous phase fluid inlet; Washing device phase splitting device D heavy out is connected with washing device mixing tank A dispersed phase fluid inlet, and washing device phase splitting device D light phase export connects with the light import mutually of back extraction device sieve-tray tower.

The utility model compared with prior art can be known from above technical scheme, requires difference according to purifying, and wherein: extraction plant selects for use pulsed sieve plate column as mass transfer apparatus; Washing device comprises one group of mulser and phase splitting device and one group of mixing tank and phase splitting device, or on aforesaid combination, increases one or more groups mulser and phase splitting device (or mixing tank and phase splitting device); Back extraction device selects for use pulsed sieve plate column as mass transfer apparatus.In the phosphoric acid purification process; Feed phosphoric acid (fresh phosphoric) adds through the import of extraction plant sieve-tray tower heavy phase; Washing acid (purifying phosphoric acid) adds through final stage washing device phosphoric acid import (or disperse phase import), and de-salted water adds through the import of back extraction device sieve-tray tower reverse-extraction agent.The no-load solvent of the light phase import of extraction plant sieve-tray tower is from back extraction device sieve-tray tower light phase export; The loaded solvent of washing device solvent inlet is from extraction plant sieve-tray tower light phase export, and the loaded solvent of the light phase import of back extraction device sieve-tray tower is from the light phase export of washing device final stage phase splitting device.Can know from above technical scheme, add surge generator because of adopting sieve-tray tower, contact as material in pulsating medium and the tower with air, and surge generator directly not contact with material, paired pulses generation equipment material is less demanding, and the equipment amplification is easy; Sieve plate can effectively improve the material contact surface, the lift technique mass-transfer performance, thus can reduce equipment size, promptly can reduce the builder amount, reduce system's start-stop car time; The design of clarifying chamber has up and down realized that mixing and phase-splitting accomplish in an equipment.Tower lower section sieve diameter and distance between plates can avoid a large amount of solid impurities to cause clogging of screen in the lower panel deposition from bigger than middle part and upper segment, influence mass-transfer efficiency.Sieve diameter can satisfy mass transfer effect in the 7-18mm scope, can reduce to stop up probability again; The liquidometer that connects outside the following clarifying chamber can help operator to understand the system interface changing conditions at any time, and the system of keeping balances each other, and makes things convenient for system to regulate.Mulser, mixing tank mass transfer area are big, and mass-transfer efficiency is high.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 through refining production food grade and electron-level phosphoric acid.System's material loading level is little, avoids hazardous material (fluids) (like phosphoric acid, organic extractant) to leak in a large number and the peace ring accident that causes; Mulser, mixing tank floor space are little, and appliance arrangement is arranged simple, and factory building can be realized miniaturized; The mulser cost is low, can save facility investment.

Description of drawings

Fig. 1 is embodiment 1 structural representation;

Fig. 2 is embodiment 2 structural representations;

Fig. 3 is embodiment 3 structural representations.

Mark among the figure:

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

Embodiment

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

Embodiment 1

Referring to Fig. 1; Adopt the phosphoric acid purification device of secondary washing; Comprise extraction plant, washing device and back extraction device; Wherein: extraction plant comprises sieve-tray tower and surge generator 12, and sieve-tray tower is made up of the body of the tower of attending clarifying chamber 1, middle part 5 at top and the following clarifying chamber 9 of bottom, and it is some that sieve plate 6 is housed in the body of the tower 5; Last clarifying chamber 1 is provided with extraction plant sieve-tray tower heavy phase import 3 and extraction plant sieve-tray tower light phase export 2, and the import 3 of extraction plant sieve-tray tower heavy phase is communicated with body of the tower 5 interior heavy phase distribution plates 4; Following clarifying chamber 9 is provided with the light phase import 11 of extraction plant sieve-tray tower, peripheral hardware liquidometer 8, and the bottom is provided with extraction plant sieve-tray tower raffinate relief outlet 10, and the light phase import 11 of extraction plant sieve-tray tower is communicated with body of the tower 5 interior light distribution plates mutually 7; Surge generator 12 is connected with following clarifying chamber 9;

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

Washing device comprises washing device mulser A13 and washing device phase splitting device A14, washing device mixing tank A22 and washing device phase splitting device B23; Washing device mulser A13 is provided with washing device mulser A import 15, washing device mulser A outlet 16; Washing device phase splitting device A14 is provided with washing device mixed phase import 17, washing device heavy out 18 and washing device light phase export 19; Washing device mulser A import 15 is connected with washing device solvent inlet 21 with washing device phosphoric acid import 20, and washing device mulser A outlet 16 is connected with washing device mixed phase import 17; Washing device mixing tank A22 is provided with washing device mixing tank A continuous phase fluid inlet 24, washing device mixing tank A dispersed phase fluid inlet 25 and washing device mixing tank A mixed phase fluid outlet 26; Washing device phase splitting device B23 is provided with washing device phase splitting device B mixed phase import 27, washing device phase splitting device B light phase export 28 and washing device phase splitting device B heavy out 29, and washing device mixing tank A mixed phase fluid outlet 26 is connected with washing device phase splitting device B mixed phase import 27; Washing device light phase export 19 is connected with washing device mixing tank A continuous phase fluid inlet 24, and washing device phase splitting device B heavy out 29 is connected with washing device phosphoric acid import 20;

Back extraction device comprises sieve-tray tower and back extraction device surge generator 58; The back extraction device sieve-tray tower is attend by the back extraction device at top that clarifying chamber 54 constitutes under the back extraction device of back extraction device body of the tower 51 and bottom at clarifying chamber 47, middle part, and it is some that back extraction device sieve plate 52 is housed in the back extraction device body of the tower; Back extraction device is attend clarifying chamber 47 and is provided with back extraction device reverse-extraction agent inlet pipe 49 and back extraction device sieve-tray tower light phase export 48, and back extraction device liquidometer 57 is arranged outward, and back extraction device reverse-extraction agent inlet pipe 49 is connected with washing composition distribution plate 50; Be provided with the light phase import 56 of back extraction device sieve-tray tower under the back extraction device in the clarifying chamber 54, back extraction acid relief outlet 55 is arranged at the bottom, and the light phase import 56 of back extraction device sieve-tray tower is connected with back extraction loaded solvent distribution plate 53; Back extraction device body of the tower bottom connects back extraction device surge generator 58, and pulse is imported in the tower.Extraction plant sieve-tray tower light phase export 2 is connected with washing device solvent inlet 21; Washing device phase splitting device B light phase export 28 connects with the light import mutually 56 of back extraction device sieve-tray tower, and back extraction device sieve-tray tower light phase export 48 connects with the light import mutually 11 of extraction plant sieve-tray tower.

During use; Feed phosphoric acid (fresh phosphoric) gets into body of the tower 5 from extraction plant sieve-tray tower heavy phase import 3 through heavy phase distribution plate 4; Organic solvent gets into body of the tower 5 from the light phase import 11 of extraction plant sieve-tray tower through light phase distribution plate 7; Two materials are reverse contact in body of the tower 5, through surge generator 12 pulse power is provided, and two materials are realized efficient mass transfer in tower.Phosphoric acid is risen to the extraction plant sieve-tray tower by organic solvent extraction entering gently becoming mutually extraction loaded solvent and attendes clarifying chamber 1, flows out from extraction plant sieve-tray tower light phase export 2 to get into washing devices.Impurity in the phosphoric acid then gets into heavy phase to be become raffinate and sinks to down clarifying chamber 9, discharges from extraction plant sieve-tray tower raffinate relief outlet 10, thereby realizes extracting and separating.

At washing device; The phosphoric acid that comes out from washing device phase splitting device B heavy out 29 under the effect of pump from washing device phosphoric acid import 20, all get into washing device mulser A13 from washing device solvent inlet 21 through washing device mulser import 15 from the loaded solvent of extraction plant; Loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A13; The mixed phase that forms comes out from washing device mulser A outlet 16, gets into washing device phase splitting device A14 through washing device mixed phase import 17; In washing device phase splitting device A14, realize the layering of mixed phase, formation light, weigh two phases; Impurity entering heavy phase in the loaded solvent becomes washes spent acid from 18 discharges of washing device heavy out; Loaded solvent comes out from washing device light phase export 19, under the effect of pump, gets into washing device mixing tank A22 through washing device mixing tank A continuous phase fluid inlet 24; Purifying phosphoric acid gets into washing device mixing tank A22 through washing device mixing tank A dispersed phase fluid inlet 25; Efficient mass transfer effect through washing device mixing tank A22; Further improve washing effect; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 26, gets into washing device phase splitting device B23 through washing device phase splitting device B mixed phase import 27, in washing device phase splitting device B23, realizes the layering of mixed phase; Form light, weigh two phases; Heavy phase is then returned washing device mulser A13 through washing device phase splitting device B heavy out 29, and loaded solvent gets into the light phase import 56 of back extraction device sieve-tray tower from washing device phase splitting device B light phase export 28 after being cleaned phosphoric acid washing, realizes washing, purifying.

At back extraction device; De-salted water gets into back extraction device body of the tower 51 and is full of the back extraction device body of the tower from back extraction device reverse-extraction agent inlet pipe 49; The wash load solvent gets into back extraction device body of the tower 51 as disperse phase from the light phase import 56 of back extraction device sieve-tray tower; Through the dispersion of sieve aperture and the pulse action of back extraction device surge generator 58 generations, two materials are realized efficient mass transfers at back extraction device body of the tower 51.The wash load solvent becomes no-load solvent after by the de-salted water back extraction and rises to back extraction device and attend clarifying chamber 47, flows out from back extraction device sieve-tray tower light phase export 48 and returns the phosphoric acid purification extraction process.Phosphoric acid in the wash load solvent then gets into water to be become back extraction acid and sinks to clarifying chamber 54 under the back extraction device, discharges from back extraction acid relief outlet 55.

Embodiment 2

Referring to Fig. 2; Adopt the phosphoric acid purification device of three grades of washings; Comprise extraction plant, washing device and back extraction device; With embodiment 1; Wherein: washing device also comprises washing device mulser B30 and washing device phase splitting device C31, and washing device mulser B30 is provided with washing device mulser B import 32, washing device mulser B outlet 33, and washing device phase splitting device C31 is provided with washing device phase splitting device C mixed phase import 34, washing device phase splitting device C heavy out 35 and washing device phase splitting device C light phase export 36; Three grades of phosphoric acid imports 37 of washing device mulser B import 32 and washing device are connected with three grades of solvent inlets 38 of washing device, and washing device mulser B outlet 33 is connected with washing device phase splitting device C mixed phase import 34; Three grades of solvent inlets 38 of washing device phase splitting device B light phase export 28 and washing device are connected; Washing device phase splitting device C heavy out 35 is connected with washing device mixing tank A dispersed phase fluid inlet 25, and washing device phase splitting device C light phase export 36 connects with the light import mutually 56 of back extraction device sieve-tray tower;

During use, at extraction plant and back extraction device, with embodiment 1.

At washing device, the phosphoric acid that washing device phase splitting device C heavy out 35 comes out returns washing device mixing tank A22 under the effect of pump; Loaded solvent from washing device phase splitting device B light phase export 28 come out, under the effect of pump through three grades of solvent inlets 38 of washing device, washing acid (purifying phosphoric acid) gets into washing device mulser B30 through three grades of phosphoric acid imports of washing device 37 through washing device mulser B import 32; The mixed phase that forms comes out from washing device mulser B outlet 33; Get into washing device phase splitting device C31 through washing device phase splitting device C mixed phase import 34; In washing device phase splitting device C31, realize the layering of mixed phase; Form light, weigh two phases, loaded solvent comes out to get into back extraction device from washing device phase splitting device C light phase export 36 after being washed acid (purifying phosphoric acid) eccysis impurity; Heavy phase is then returned washing device mixing tank A22 through washing device phase splitting device C heavy out 35; Loaded solvent with 24 entering of washing device mixing tank A continuous phase fluid inlet; Efficient mass transfer effect through washing device mixing tank A22; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 26; Get into washing device phase splitting device B23 through washing device phase splitting device B mixed phase import 27, in washing device phase splitting device B23, realize the layering of mixed phase, formation light, weigh two phases; Loaded solvent gets into washing device mulser B30 from washing device phase splitting device B light phase export 28; Heavy phase then through washing device phase splitting device B heavy out 29 return washing device mulser A13, under the effect of pump from washing device phosphoric acid import 20, all get into washing device mulser A13 from the loaded solvent of extraction plant from washing device solvent inlet 21 through washing device mulser import 15, loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A13; The mixed phase that forms comes out from washing device mulser outlet 16, gets into washing device phase splitting device 14 through washing device mixed phase import 17; In washing device phase splitting device 14, realize the layering of mixed phase, formation light, weigh two phases; The impurity entering heavy phase of loaded solvent becomes washes spent acid from 18 discharges of washing device heavy out; Loaded solvent comes out from washing device light phase export 19, under the effect of pump, gets into washing device mixing tank A22 through washing device mixing tank A continuous phase fluid inlet 24.

Embodiment 3

Referring to Fig. 3; Adopt the phosphoric acid purification device of three grades of washings; Comprise extraction plant, washing device and back extraction device; With embodiment 1; Wherein: washing device comprises washing device mixing tank B39 and washing device phase splitting device D40; Washing device mixing tank B39 is provided with washing device mixing tank B continuous phase fluid inlet 41, washing device mixing tank B dispersed phase fluid inlet 42 and washing device mixing tank B mixed phase fluid outlet 43, and washing device phase splitting device D40 is provided with washing device phase splitting device D mixed phase import 44, washing device phase splitting device D light phase export 45 and washing device phase splitting device D heavy out 46, and washing device mixing tank B mixed phase fluid outlet 43 is connected with washing device phase splitting device D mixed phase import 44; Washing device phase splitting device B light phase export 28 is connected with washing device mixing tank B continuous phase fluid inlet 41; Washing device phase splitting device D heavy out 46 is connected with washing device mixing tank A dispersed phase fluid inlet 25, and washing device phase splitting device D light phase export 45 connects with the light import mutually 56 of back extraction device sieve-tray tower;

During use, at extraction plant and back extraction device, with embodiment 1.

At washing device; The loaded solvent that comes out from washing device phase splitting device B light phase export 28; Under the effect of pump, get into washing device mixing tank B39 through washing device mixing tank B continuous phase fluid inlet 41, washing acid (purifying phosphoric acid) gets into washing device mixing tank B39 through washing device mixing tank B dispersed phase fluid inlet 42; The mixed phase that forms comes out from washing device mixing tank B mixed phase fluid outlet 43; Get into washing device phase splitting device D40 through washing device phase splitting device D mixed phase import 44; In washing device phase splitting device D40, realize the layering of mixed phase; Form light, weigh two phases, loaded solvent comes out to get into back extraction device from washing device phase splitting device D light phase export 45 after being washed acid (purifying phosphoric acid) eccysis impurity; Heavy phase is then come out through washing device phase splitting device D heavy out 46, under the effect of pump, returns washing device mixing tank A 22 through washing device mixing tank A dispersed phase fluid inlet 25; Loaded solvent comes out, under the effect of pump, gets into washing device mixing tank A22 through washing device mixing tank A continuous phase fluid inlet 24 from the light phase export 19 of washing device phase splitting device A; Efficient mass transfer effect through washing device mixing tank A22; The mixed phase that forms comes out from washing device mixing tank A mixed phase fluid outlet 26; Get into washing device phase splitting device B23 through washing device phase splitting device B mixed phase import 27; In washing device phase splitting device B23, realize the layering of mixed phase; Form light, weigh two phases; Loaded solvent gets into washing device mixing tank B39 from washing device phase splitting device B light phase export 28, and heavy phase then all gets into washing device mulser A13 through washing device mulser import 15 from washing device phosphoric acid import 20, loaded solvent from washing device solvent inlet 21 through washing device phase splitting device B heavy out 29 under the effect of pump, and loaded solvent and phosphoric acid are accomplished the efficient mass transfer process in washing device mulser A13; The mixed phase that forms comes out from washing device mulser A outlet 16, gets into washing device phase splitting device A14 through mixed phase import 17; In washing device phase splitting device A14, realize the layering of mixed phase, formation light, weigh two phases; The impurity entering heavy phase of loaded solvent becomes washes spent acid from 18 discharges of washing device heavy out, and loaded solvent comes out to get into washing device mixing tank A22 from light phase export 19.

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

Mixing tank adopts Chinese patent publication number CN1571427A, discloses on 02 22nd, 2006 " a kind of multi-channeled micro-structured reactor ".

The above only is the preferred embodiment of the utility model, is not that the utility model is appointed

What pro forma restriction, any the utility model technical scheme content that do not break away from, according to the utility model

Technical spirit all still belongs to this to any simple modification, equivalent variations and modification that above embodiment did

In the scope of utility model technical scheme.

Claims

1. phosphoric acid purification device; Comprise extraction plant, washing device and back extraction device; It is characterized in that: extraction plant comprises sieve-tray tower and surge generator (12); Sieve-tray tower is made up of the body of the tower (5) of attending clarifying chamber (1), middle part at top and the following clarifying chamber (9) of bottom, and it is some that sieve plate (6) is housed in the body of the tower (5); Last clarifying chamber (1) is provided with extraction plant sieve-tray tower heavy phase import (3) and extraction plant sieve-tray tower light phase export (2), and extraction plant sieve-tray tower heavy phase import (3) is communicated with the interior heavy phase distribution plate (4) of body of the tower (5); Following clarifying chamber (9) is provided with the light phase import of extraction plant sieve-tray tower (11); Peripheral hardware liquidometer (8); The bottom is provided with extraction plant sieve-tray tower raffinate relief outlet (10), and the light phase import of extraction plant sieve-tray tower (11) is communicated with the interior light distribution plate mutually (7) of body of the tower (5); Surge generator (12) is connected with following clarifying chamber (9);

Washing device comprises washing device mulser A (13) and washing device phase splitting device A (14), washing device mixing tank A (22) and washing device phase splitting device B (23); Washing device mulser A (13) is provided with washing device mulser A import (15), washing device mulser A exports (16); Washing device phase splitting device A (14) is provided with washing device mixed phase import (17), washing device heavy out (18) and washing device light phase export (19); Washing device mulser A import (15) is connected with washing device solvent inlet (21) with washing device phosphoric acid import (20), and washing device mulser A outlet (16) is connected with washing device mixed phase import (17); Washing device mixing tank A (22) is provided with washing device mixing tank A continuous phase fluid inlet (24), washing device mixing tank A dispersed phase fluid inlet (25) and washing device mixing tank A mixed phase fluid outlet (26); Washing device phase splitting device B (23) is provided with washing device phase splitting device B mixed phase import (27), washing device phase splitting device B light phase export (28) and washing device phase splitting device B heavy out (29), and washing device mixing tank A mixed phase fluid outlet (26) is connected with washing device phase splitting device B mixed phase import (27); Washing device light phase export (19) is connected with washing device mixing tank A continuous phase fluid inlet (24), and washing device phase splitting device B heavy out (29) is connected with washing device phosphoric acid import (20);

Back extraction device comprises sieve-tray tower and back extraction device surge generator (58); The back extraction device sieve-tray tower is attend by the back extraction device at top that clarifying chamber (54) constitutes under the back extraction device of back extraction device body of the tower (51) and bottom at clarifying chamber (47), middle part, and it is some that back extraction device sieve plate (52) is housed in the back extraction device body of the tower; Back extraction device is attend clarifying chamber (47) and is provided with back extraction device reverse-extraction agent inlet pipe (49) and back extraction device sieve-tray tower light phase export (48); Back extraction device liquidometer (57) is arranged outward, and back extraction device reverse-extraction agent inlet pipe (49) is connected with washing composition distribution plate (50); Be provided with the light phase import of back extraction device sieve-tray tower (56) in the clarifying chamber under the back extraction device (54), back extraction acid relief outlet (55) is arranged at the bottom, and the light phase import of back extraction device sieve-tray tower (56) is connected with back extraction loaded solvent distribution plate (53); Back extraction device body of the tower bottom connects back extraction device surge generator (58); Extraction plant sieve-tray tower light phase export (2) is connected with washing device solvent inlet (21); Washing device phase splitting device B light phase export (28) connects with the light import mutually of back extraction device sieve-tray tower (56), and back extraction device sieve-tray tower light phase export (48) connects with the light import mutually of extraction plant sieve-tray tower (11).

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

Washing device comprises washing device mulser B (30) and washing device phase splitting device C (31); Washing device mulser B (30) is provided with washing device mulser B import (32), washing device mulser B exports (33); Washing device phase splitting device C (31) is provided with washing device phase splitting device C mixed phase import (34), washing device phase splitting device C heavy out (35) and washing device phase splitting device C light phase export (36); Washing device mulser B import (32) is connected with three grades of solvent inlets of three grades of phosphoric acid imports of washing device (37) and washing device (38), and washing device mulser B outlet (33) is connected with washing device phase splitting device C mixed phase import (34); Washing device phase splitting device B light phase export (28) is connected with three grades of solvent inlets of washing device (38); Washing device phase splitting device C heavy out (35) is connected with washing device mixing tank A dispersed phase fluid inlet (25), and washing device phase splitting device C light phase export (36) connects with the light import mutually of back extraction device sieve-tray tower (56).

3. phosphoric acid purification device as claimed in claim 1; It is characterized in that: washing device comprises washing device mixing tank B (39) and washing device phase splitting device D (40); Washing device mixing tank B (39) is provided with washing device mixing tank B continuous phase fluid inlet (41), washing device mixing tank B dispersed phase fluid inlet (42) and washing device mixing tank B mixed phase fluid outlet (43); Washing device phase splitting device D (40) is provided with washing device phase splitting device D mixed phase import (44), washing device phase splitting device D light phase export (45) and washing device phase splitting device D heavy out (46), and washing device mixing tank B mixed phase fluid outlet (43) is connected with washing device phase splitting device D mixed phase import (44); Washing device phase splitting device B light phase export (28) is connected with washing device mixing tank B continuous phase fluid inlet (41); Washing device phase splitting device D heavy out (46) is connected with washing device mixing tank A dispersed phase fluid inlet (25), and washing device phase splitting device D light phase export (45) connects with the light import mutually of back extraction device sieve-tray tower (56).