CN202415424U

CN202415424U - Chemical reaction kettle

Info

Publication number: CN202415424U
Application number: CN2012200388511U
Authority: CN
Inventors: 钟希平; 万国骅
Original assignee: JIANGSU AOSHUXIN THERMAL INSULATION MATERIALS CO Ltd
Current assignee: JIANGSU AOSHUXIN THERMAL INSULATION MATERIALS CO Ltd
Priority date: 2012-01-18
Filing date: 2012-01-18
Publication date: 2012-09-05
Anticipated expiration: 2022-01-18

Abstract

The utility model relates to a chemical reaction kettle, belonging to the technical field of chemical reaction equipment. The reaction kettle comprises a kettle body, wherein a containing chamber is formed at the inner part of the reaction kettle, the center on the top of the kettle body is provided with a stirring rod extending into the containing chamber, internal/external circle of heat exchange medium-externally connecting coil heat exchangers are arranged between the stirring rod and the inner wall of the kettle body at intervals, at least one stirring arm extends from the lower end of the stirring rod along the radial direction, and stirring handles arranged between the internal circle of coil heat exchanger and the external circle of coil heat exchanger upwards extend out of the outer ends of the stirring arms. In the process of reaction, the two circles of heat exchangers simultaneously react inside and outside, and the stirring arms under the kettle body and the stirring handles between the two circles of heat exchangers continuously stir in a rotating way, so that even if the reaction kettle is internally filled with colloidal reactant with very bad thermal conductivity, a more even temperature field can be controlled to be formed in the kettle.

Description

A kind of chemical reaction kettle

Technical field

The utility model relates to a kind of chemical reaction kettle, and the reaction kettle that especially a kind of first rank phenol formaldehyde foam resins is used belongs to technical field of chemical reaction devices.

Background technology

Understand according to the applicant; The traditional processing technology of resole is complex equipments not only; Need through dewater, vacuumize, loaded down with trivial details processes such as boiler heating, the cooling of freezing, and the discharge of wastewater of one ton of resol of every production reaches 700 kilograms more than, is unfavorable for environment protection.

Find that through retrieval application number is that the one Chinese patent application of CN200910226671.9 discloses a kind of method of utilizing Paraformaldehyde 96 to produce resol.The problem of long-term puzzlement enterprise developments such as inconvenient liquid formaldehyde transportation, energy consumption are big though this patented technology has overcome theoretically, contaminate environment; But in fact can not be applied to produce in batches; Because the process of utilizing Paraformaldehyde 96 to produce resol is thermopositive reaction; And the thermal conductivity of resultant is very poor, produces the difficult problem that the big volume reaction kettle that adopts can't solve internal temperature control in batches.The cooling jacket structure that existing reaction kettle adopts only is applicable to laboratory or little volume reaction kettle; Can't solve the inside temperature control problem of big volume reaction kettle; (being commonly called as " quick-fried dashing " phenomenon) overflowed in the reactant boiling that is difficult to avoid lasting rising of Yin Wendu in the production process and causes; The result not only can cause waste of material, and reaction can't be proceeded, and is easy to cause accident.

The utility model content

The utility model technical problem to be solved is: propose a kind of chemical reaction kettle that not only can solve an internal temperature control difficult problem conscientiously, thereby create conditions for utilizing Paraformaldehyde 96 to produce the phenolic foam resin in batches.

The technical scheme that the utility model solves its technical problem is following: a kind of chemical reaction kettle; Comprise the inner kettle that forms cavity volume; The top center of said kettle is settled the agitator arm that stretches in the cavity volume; The coil heat exchanger of the external heat transferring medium of inside and outside circle spaced apart between said agitator arm and the inner wall of kettle, the lower end of said agitator arm is radially extended an agitating arm at least, and the outer end of said agitating arm is extended the stirring handle between inside and outside circle coil heat exchanger up.When reacting; Owing to have an effect simultaneously inside and outside the two circle interchanger; The agitating arm of kettle bottom and the stirring handle between two circle interchanger continue the rotation stirring in addition; Even therefore be full of the very poor colloidal reactant of thermal conductivity in the reaction kettle, also can control and form comparatively homogeneous temp field in the still.

The utility model further improves, and spiraling of said two circle interchanger is in the opposite direction.Like this; Not only the heat transferring medium in the Internal and external cycle coil heat exchanger helps the inner heat exchange of whole kettle mutually all the better because of flowing to; And reactant is when the coil pipe interval of the inside and outside circle coil heat exchanger of flowing through under the effect is ordered about in stirring; Can be directed producing underspin or on revolve trend, thereby make the reactant thorough mixing, reach the action effect of even temperature in the still.

Further perfect of the utility model be, has spiral slot on the said agitator arm, and spiraling of especially said spiral fluted rotation direction and inner ring interchanger is in the opposite direction.Like this, agitator arm, inner ring coil heat exchanger, outer ring coil heat exchanger will make near the reactant it produce mutually different rotation direction trend, and heat exchange each other is more abundant.

Description of drawings

Fig. 1 is the three-dimensional structure synoptic diagram of an embodiment of the utility model.

Fig. 2 is the two-dirnentional structure synoptic diagram of Fig. 1 embodiment.

Embodiment

Embodiment 1

Present embodiment is the chemical reaction kettle that is exclusively used in preparation first rank phenol formaldehyde foam resin, and is as depicted in figs. 1 and 2, and this reaction kettle comprises the inner kettle that forms cavity volume, and kettle top buckle closure has the loam cake 13 of unlimited opening for feed 14, and the bottom has the discharge port 9 of valve control.The top center fixed conveyor support 16 of loam cake 13 is equipped with by the transmission rig transmission and stretches into the agitator arm 8 in the cavity volume in the transmission bracket 16.Inside and outside two circles spaced apart are respectively through being positioned at first import 1 on the loam cake 13, the inner ring coil heat exchanger 11 and the outer ring coil heat exchanger 12 of second import, 15 external cooling water sources between agitator arm 8 and the inner wall of kettle; Spiraling of two circle interchanger is in the opposite direction, and its

outlet

3,4 also is positioned at and covers.Has the spiral slot (not shown) that rotation direction and inner ring interchanger 11 spiral in the opposite direction on the shaft of agitator arm 8; Extend respectively at inside and outside circle coil heat exchanger 11, stirring handle 7 between 12 up the outer end that a pair of agitating arm 10, two agitating arms 10 are radially extended in its lower end.Except two circle coil heat exchangers, the kettle of this chemical reaction kettle is formed the chuck interchanger with bottom water-in and side water outlet by shell 5 and inwall 6.2 for being positioned at the thermometer on the loam cake 13 among the figure.

During production; Materials such as sodium hydroxide, phenol, poly first and water are dropped in the reaction kettle by predetermined proportion, and start whipping appts and stir, owing to have spiral slot on the agitator arm; Therefore not only can extend stirring handle through agitating arm produces stirring action between inside and outside circle coil heat exchanger; And within the inner ring coil heat exchanger, also can produce the stirring action of underspin, mixing uniformity obviously improves, thereby makes material reaction each other more abundant.When treating material generation chemical reaction release of heat, open cooling water source as required, start inside and outside circle coil heat exchanger and chuck interchanger; Under the effect of three layers of interchanger; Temperature in the reaction kettle is effectively suppressed, and because the rotation direction of agitator arm, inner ring coil heat exchanger, outer ring coil heat exchanger replaces each other, near it reactant is produced revolve or underspin trend on mutually different; Mixing each other is more even, and heat exchange is also more abundant.At last, when question response resultant viscosity reaches preset value, add tensio-active agent, improving agent etc., and control reaction kettle and suitably lower the temperature, open discharge port, promptly obtain required first rank phenol formaldehyde foam resin.

Evidence, behind the reaction kettle of employing present embodiment, can be unlimited fully; Even viscosity is very big, the very poor first rank phenol formaldehyde foam resin intermediate reaction thing of heat-conductive characteristic, also can in still, form comparatively homogeneous temp field by inside and outside interchanger, thoroughly avoid " quick-fried dashing " phenomenon; And the combination of heat-exchange system and whipping appts; It is more even to make that also reactant mixes, and reacts more abundant, helps to improve the preparation quality of work efficiency and first rank phenol formaldehyde foam resin.

Claims

1. chemical reaction kettle; Comprise the inner kettle that forms cavity volume; The top center of said kettle is settled the agitator arm that stretches in the cavity volume; It is characterized in that: the coil heat exchanger of the external heat transferring medium of inside and outside circle spaced apart between said agitator arm and the inner wall of kettle, the lower end of said agitator arm is radially extended an agitating arm at least, and the outer end of said agitating arm is extended the stirring handle between inside and outside circle coil heat exchanger up.

2. chemical reaction kettle according to claim 1 is characterized in that: spiraling of said two circle interchanger is in the opposite direction.

3. chemical reaction kettle according to claim 1 and 2 is characterized in that: have spiral slot on the said agitator arm,

4. chemical reaction kettle according to claim 3 is characterized in that: spiraling of said spiral fluted rotation direction and inner ring interchanger is in the opposite direction.

5. chemical reaction kettle according to claim 4 is characterized in that: said kettle is formed the chuck interchanger with bottom water-in and side water outlet by shell and inwall.