CN2697070Y

CN2697070Y - Dynamic ion exchanger

Info

Publication number: CN2697070Y
Application number: CNU2004200265447U
Authority: CN
Inventors: 谭安琪; 孙宝篪; 郁其平; 邵正理
Original assignee: Tianma Medicine Group Co ltd Suzhou
Current assignee: Suzhou Tianma Fine Chemical Product Co., Ltd.
Priority date: 2004-04-20
Filing date: 2004-04-20
Publication date: 2005-05-04
Anticipated expiration: 2014-04-20

Abstract

The utility model provides a dynamic ion exchanger, comprising a reaction container, and an agitator which is arranged in the reaction container. The dynamic ion exchanger is characterized in that: the agitator is combined by a rotating shaft, a blade, and a spiral band; the rotating shaft is vertically arranged in the center of the reaction container; the blade is vertically fixed onto the rotating shaft; the spiral band is arranged in the container space out of the rotation radius of the blade; the helical band is supported on the rotating shaft by a support bar, and the blade is contrary to the spiral direction of the spiral band in the container. The device can prompt that the reactant in the reaction container is in a motion state with circulating shift; the added reactant is made to proceed contact reaction with the fresh reactant in the container, so as to satisfy the special need in the process of chemical reaction or the ion exchange. The dynamic ion exchange technology of the utility model is applied in the acidizing process of preparing nanometer earth silicon collosol which is used for paper; the occurrence of the gelatinization reaction can be effectively avoided; the exchange, the scouring, and the regeneration of the resin can be smoothly repeated, and the dynamic ion exchanger is convenient to produce the highgrade earth silicon colloidal solution for paper in an industrial scale.

Description

The dynamic ion exchange device

Technical field

The utility model relates to a kind of chemical reaction container, is specifically related to a kind of dynamic ion exchange device.This device can impel reactant to be in the kinestate stirred of circulation in reaction vessel, makes fresh reactant contact reacts in the reactant of adding and the container, to satisfy the special requirement of some chemical reactions or ion exchange process.

Background technology

In chemical reaction, ion exchange process is subjected to influence of various factors, wherein, the kinestate of ion exchange resin in reaction vessel is exactly one of important factor of influence, especially in some special chemical reaction processes, it not only influences ionic exchange effect and reaction efficiency, also directly has influence on the chemistry and the physical properties of resultant.Such as, in the process of preparation paper grade (stock) nano silicon dioxide sol, according to Chinese patent: the patent No. is 90109033.6, name is called " silicon sol, produce the method for silicon sol and the purposes of silicon sol " patent of invention in the method that provided operate, because the pH value comes and goes transition between acidity and alkalescence, can produce the many white silica dioxide gels of quantity, gel takes place even become piece with resin particle knot cake.This phenomenon is not only regenerated to used ion exchange resin washing with acid and is brought difficulty, and stops up resin column partially liq passage easily, wants to separate quite trouble of these gel particles or caking.Especially after regeneration several times, remaining gel becomes closely, and proportion and resin particle are close, more are difficult to and resin isolation.If according to another piece publication number is CN1406209A, number of patent application is 99816702.9, name is called the patent application scheme of " stabilized colloidal silica with high surface area and modified activity " and operates, can produce gel too, sneak into resin after the accumulation, cause difficulty for the regenerated from washing of resin, increased the turbidity of colloidal sol simultaneously.

Analyzing its reason mainly is: the dioxide/silica gel liquid solution itself is a thermodynamic (al) metastable system, and it has stronger gelation tendency.The factor that influences its gelation rate is a lot, and wherein the pH value is most important.R.K. dust the people such as is reined in and is studied with regard to the gelation of silicon sol, thinks that the gelation time of silicon sol and the relation curve of pH value are " N " fonts, and the pH value of lower-most point is 5.5, and vertex is 2.Thereby, be 5～6 o'clock in the pH value, this colloidal sol is extremely unstable, is easy in moment gelation reaction take place promptly.Therefore, in order in the production process of paper grade (stock) silicon sol, to solve the problem that gelation reaction takes place, will be in the regenerated from washing process of preparation silicon sol and ion exchange resin, keep environment of system for acid always, be pH value≤5, preferably≤4.5, and do not allow environment of system between acidity and alkalescence, come and go transition, to avoid through the pH value is stage of 5～6, can avoid the generation of gelation reaction like this.After deliberation, realize this goal, one of major measure is exactly when sodium silicate solution joins in the Zeo-karb, require to keep resin to be in circulation and stir state, thereby guarantee that the sodium silicate solution that adds continuously with certain speed can be as early as possible and the abundant contact reacts of strongly acidic cation-exchange of fresh Hydrogen, finish alkalimetal ion and H rapidly ⁺Exchange, keep to be reflected at pH value≤5 with a kind of dynamic ion exchange form, preferably≤4.5 carry out under the condition.In fact this proposed new requirement to reaction vessel.

The existing operation format that adopts resin to carry out ion-exchange has three kinds, i.e. fixed bed, moving-bed and fluidized-bed.From the kinestate of ion exchange process, resin generally remains static in the fixed bed, although and in moving-bed and the fluidized-bed resin be in flow state, equipment relative complex, kinestate are difficult to control, and cost height.

The purpose of this utility model provides a kind of dynamic ion exchange device, this device can impel reactant to be in the kinestate that circulation is stirred in reaction vessel, make fresh reactant contact reacts in the reactant of adding and the container, to satisfy the special requirement of above-mentioned ion exchange process.

Summary of the invention

For achieving the above object, the technical solution adopted in the utility model is: a kind of dynamic ion exchange device, comprise a reaction vessel and be located at agitator in the reaction vessel, described agitator is by rotation axis, blade and hurricane band constitute, rotation axis vertically is arranged on reaction vessel central authorities, blade deflection one angle also is vertically fixed on the rotation axis, hurricane band is arranged in the blade rotation radius vessel space in addition, hurricane band is bearing on the rotation axis by support bar, the deflection angle of blade is opposite with the hand of spiral of hurricane band in container, makes blade opposite to the pushing direction of liquid with hurricane band.

The related content of technique scheme is explained as follows:

1, in the such scheme, be in the kinestate that circulation is stirred in order to impel reactant in reaction vessel, the rotation radius of hurricane band inner edge is greater than the rotation radius of blade outer rim.Like this when agitator is worked, the pushing direction that reactant is complied with blade and hurricane band circulates in container and stirs.

2, in the such scheme, in order to keep the running balance that reactant circulation is stirred, blade is provided with in pairs in the rotation axis left and right sides, at rotation axis axially between the upper and lower every layout.

3, in the such scheme, when in the container ion exchange resin being housed, for the ease of separating and resin regeneration, the reaction vessel bottom is provided with spacer screen or porous plate, and the bottom is a cone.

The utility model principle of work: when agitator is worked, the driven by motor rotation axis rotates, at this moment, the resin or the reactant that are located in the blade promotion container on the rotation axis move up or down, resin or reactant that hurricane band then promotes in the container move downward or upward in the periphery, stir thereby make resin or reactant form circulation up and down in container, the intensity of stirring is by the rotating speed control of agitator.

Because the technique scheme utilization, this programme compared with prior art has following advantage and effect:

1, the utility model is simple in structure, be skillfully constructed, especially blade and hurricane band structure are combined in and impel in the container resin or reactant to be in circulation to stir state and played keying action, and obtained good effect, so this programme has novelty and creativeness.

2, the utility model dynamic ion exchange technology is applied to prepare the acidification technology of paper grade (stock) nano silicon dioxide sol, make the water glass that slowly continuously adds generate colloidal sol with the strongly acidic cation-exchange contact reacts of fresh Hydrogen as early as possible, thereby the pH value of keeping reactor internal reaction thing is in≤5 (preferably≤4.5), can effectively avoid gelation reaction to occur like this, exchange, washing, the regeneration of resin can be carried out smoothly repeatedly, be convenient to the high-quality dioxide/silica gel liquid solution that is used for papermaking of industrial-scale production.

Description of drawings

Accompanying drawing 1 is the utility model example structure synoptic diagram;

Accompanying drawing 2 is the partial enlarged drawing of the utility model embodiment blade and hurricane band.

Wherein: 1, reaction vessel; 2, rotation axis; 3, hurricane band; 4, blade; 5, support bar; 6, porous plate; 7, cone.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: referring to attached illustrated in figures 1 and 2, a kind of dynamic ion exchange device is made up of reaction vessel 1 and the agitator that is located in the reaction vessel 1.Reaction vessel 1 is an axial cylinder container, and its underpart is provided with porous plate 6, and the bottom is a cone 7.Described agitator is constituted by rotation axis 2, blade 4 and hurricane band 3, rotation axis 2 one ends rotate by electric motor driving, rotation axis 2 vertically is arranged on reaction vessel 1 central authorities, blade 4 deflections, one angle also is vertically fixed on the rotation axis 2, blade 4 is provided with in pairs in rotation axis 2 left and right sides, and is axially several right every arranging between the upper and lower at rotation axis 2.Hurricane band 3 is arranged in the blade 4 rotation radius vessel space in addition, and the rotation radius of hurricane band 3 inner edges is greater than the rotation radius of blade 4 outer rims.Hurricane band 3 is bearing on the rotation axis 2 by support bar 5, the deflection angle of blade 4 is opposite with the hand of spiral of hurricane band 3 in container, makes blade opposite to the pushing direction of liquid with hurricane band, wherein, the hand of spiral of blade 4 is left-handed, and the hand of spiral of hurricane band 3 is dextrorotation.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1, a kind of dynamic ion exchange device, comprise a reaction vessel [1] and be located at agitator in the reaction vessel [1], it is characterized in that: described agitator is by rotation axis [2], blade [4] and hurricane band [3] constitute, rotation axis [2] vertically is arranged on reaction vessel [1] central authorities, blade [4] deflection one angle also is vertically fixed on the rotation axis [2], hurricane band [3] is arranged in blade [4] the rotation radius vessel space in addition, hurricane band [3] is bearing on the rotation axis [2] by support bar [5], and the deflection angle of blade [4] is opposite with the hand of spiral of hurricane band [3] in container.

2, dynamic ion exchange device according to claim 1 is characterized in that: the rotation radius of hurricane band [3] inner edge is greater than the rotation radius of blade [4] outer rim.

3, dynamic ion exchange device according to claim 1 is characterized in that: blade [4] is provided with in pairs in rotation axis [2] left and right sides, at rotation axis [2] axially between the upper and lower every layout.

4, dynamic ion exchange device according to claim 1 is characterized in that: reaction vessel [1] bottom is provided with spacer screen or porous plate [6], and the bottom is taper [7].