CN201952262U

CN201952262U - Ultrasonic-assisted electrodialysis equipment

Info

Publication number: CN201952262U
Application number: CN2010205759190U
Authority: CN
Inventors: 施冬梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-26
Filing date: 2010-10-26
Publication date: 2011-08-31
Anticipated expiration: 2020-10-26

Abstract

Ultrasonic-assisted electrodialysis equipment comprises anion-cation exchange film and diaphragms, a positive electrode, a negative electrode, ultrasonic vibrators and a shell, wherein the positive electrode, the negative electrode and the anion-cation exchange film and diaphragms are arranged in parallel according to a certain sequence shown in figures, the positive electrode and the negative electrode are respectively connected with an anode and a cathode of a direct-current power source, and the ultrasonic vibrators are connected with an external ultrasonic generator. The ultrasonic-assisted electrodialysis equipment can be used for deacidification, dealkalization and desalinization, and is excellent in deionization of highly viscous liquors with complex constituents, membrane hole blockage and electrode pollution can be reduced effectively under strong stirring action of ultrasonic, limit current is increased, and thereby energy consumption is reduced. Due to the ultrasonic, possibly settled matters in deionized liquors cannot be deposited toward the same direction, and thereby drainage is even and convenient.

Description

A kind of ultrasonic wave is assisted electrodialysis appts

Technical field

The utility model relates to a kind of by the electrodialysis deionization apparatus of ultrasonic wave as utility appliance, especially bigger in viscosity, exhibits excellent in the solution deionising process of complicated component effectively reduces film plug-hole and electrode fouling phenomenon, improve limiting current, thereby reduced overall energy consumption; Owing to action of ultrasonic waves, the material that may precipitate behind the solution deionization can't be towards a direction deposition, for discharge opeing evenly provides convenience simultaneously.

Background technology

At present, electrodialytic technique in the advanced treatment of water mainly based on desalination, in the special trade wastewater treatment process, electrodialytic effect is that other membrane techniquies are irreplaceable, but because special trade such as papermaking, industries such as sugar alcohol, waste water contains a large amount of carbohydrates, colloid, xylogen, fat, wax, impurity such as hemicellulose, also contain acid, ionogen such as alkali, during electrodialysis process, organic impurity leaves acid, alkali, salt environment is easy to form precipitation, causes the filter membrane plug-hole, contaminated electrode, the electrodialysis limiting current is descended, and energy consumption increases, and makes enterprise hang back.

Summary of the invention

The utility model is primarily aimed at special trade, and demand is reclaimed in the particularly acid of sugar alcohol, paper industry, alkali, salt, has designed a kind ofly by the electrodialysis appts of ultrasonic wave as utility appliance, effectively solves filter membrane plug-hole and electrode fouling problem.

The auxiliary electrodialysis appts of ultrasonic wave that the utility model is related, it is to be made of anion and cation exchange membrane and dividing plate, anodic-cathodic, supersonic oscillator and shell, it is characterized in that negative electrode is connected with outside dc power cathode, positive electrode is connected with outside dc power anode, and supersonic oscillator is connected with the external ultrasound wave producer; Its technical scheme that adopts is that zwitterion film and dividing plate, anodic-cathodic are arranged in parallel in order, electrodialytic cell is divided into a plurality of intervals, anode side begins to arrange with cationic exchange membrane and dividing plate, it is right that cationic exchange membrane and dividing plate and anion-exchange membrane and dividing plate constitute a film, film is to increasing in pairs or reduce, quantity is no less than a pair of, and the ionic membrane of cathode side is an anion-exchange membrane; Supersonic oscillator is installed in each interval bottom, ultrasonic unit can start simultaneously when electrodialysis unit started, because the shock energy that ultrasonic wave produces stops the deposition of viscosity organism at film surface and electrode surface, make suspension liquid be in the state of being evenly distributed simultaneously, discharge is convenient, therefore more helps the feed liquid deionization that viscosity is big, turbidity is big and handles.

Description of drawings Fig. 1 is a structural representation of the present utility model

As shown in Figure 1, this equipment by 1. cationic membrane and dividing plate 2. anionic membrane and dividing plate 3. anode 4. negative electrode 5. supersonic oscillator 6. shell constitute external direct current power supply; Electrode regulating YIN and YANG ionic membrane and dividing plate put in order as shown in Figure 1, and it is right that a cationic membrane and an anionic membrane (containing dividing plate) constitute a film, and film can increase according to the needs of turnout or reduce number; The top of this equipment can be to add a cover, and also can be that feed port is opened in sealing, and discharge hole is opened in the bottom, and feed inlet and outlet all is connected with external pump; Supersonic oscillator connects the external ultrasound wave producer, and anode and cathode connects the negative pole and the positive pole of external dc power respectively; The structure of cathodic area and positive column can cooperate the structure of electrode to do corresponding adjustment.

Fig. 2 is that the utility model reclaims the principle schematic of contained NaOH in the black liquid, is labeled as 1. 2. 3. 4. 5. 6. shell of supersonic oscillator of negative electrode of anode of anionic membrane and dividing plate of cationic membrane and dividing plate among the figure;

Fig. 3 is for the utility model is an xylose hydrolysis fluid desalination acid principle schematic, is labeled as 1. 2. 3. 4. 5. 6. shell of supersonic oscillator of negative electrode of anode of anionic membrane and dividing plate of cationic membrane and dividing plate among the figure.

Embodiment

As shown in Figure 1, the utility model by 1. cationic membrane and dividing plate 2. anionic membrane and dividing plate 3. anode 4. negative electrode 5. supersonic oscillator 6. shell constitute, electrode regulating YIN and YANG ionic membrane and dividing plate are according to series arrangement shown in Figure 1, supersonic oscillator is connected with the external ultrasound wave producer, anodic-cathodic is connected with anodal with the dc power cathode of outside respectively, when pending liquid need reclaim alkali or salt, input and output material as shown in Figure 2, Fig. 2 is an example with the alkali that reclaims in the black liquid, its input and output material and ion motion direction are as shown in Figure 2, the feed liquid of discharging is the suspension liquid state, contain xylogen, hemicellulose, pigment, fat, wax, monose and polysaccharide, the ash material that grades, viscosity height, the wherein very little main body that constitutes cotton-shaped suspended substance of xylogen and hemicellulose solubleness in neutral aqueous solution; The alkali lye composition of gained is single, can direct reuse, also can pass back into rare alkali lye the alkali chamber, and obtain the alkali lye of enrichment.

When pending feed liquid needs recovered acid, input and output material as shown in Figure 3, Fig. 3 is an example with xylose hydrolysis fluid desalination acid, its input and output material and ion motion mode as shown in Figure 3, the liquid of discharge is wood sugar depickling scavenging solution and sour concentrated solution.Can't satisfy the needs of direct reuse as the concentration of tartaric acid, acid can be passed back into sour chamber again, to obtain the acid solution of greater concn.

Claims

1. a ultrasonic wave is assisted electrodialysis appts, it is to be made of anion and cation exchange membrane and dividing plate, anodic-cathodic, supersonic oscillator and shell, it is characterized in that negative electrode is connected with outside dc power cathode, positive electrode is connected with outside dc power anode, and supersonic oscillator is connected with the external ultrasound wave producer.

2. electrodialysis appts according to claim 1, it is characterized in that zwitterion film and dividing plate, anodic-cathodic are arranged in parallel in order, anode side begins to arrange with cationic exchange membrane and dividing plate, it is right that cationic exchange membrane and dividing plate and anion-exchange membrane and dividing plate constitute a film, film is to increasing in pairs or reduce, quantity is no less than a pair of, and the film of cathode side is an anion-exchange membrane.

3. electrodialysis appts according to claim 1 is characterized in that supersonic oscillator is installed in the bottom of each chamber, is connected with the ultrasonic generator of outside.

4. electrodialysis appts according to claim 1 is characterized in that the top of equipment can be added a cover, and also can not add a cover, and from its top feed, from bottom discharge, each input and output material hole all is connected with the pump of outside.