CN1057237C - Agitator with thermal insulation casing type heat exchanging apron - Google Patents
Agitator with thermal insulation casing type heat exchanging apron Download PDFInfo
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- CN1057237C CN1057237C CN97115273A CN97115273A CN1057237C CN 1057237 C CN1057237 C CN 1057237C CN 97115273 A CN97115273 A CN 97115273A CN 97115273 A CN97115273 A CN 97115273A CN 1057237 C CN1057237 C CN 1057237C
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- heat exchange
- baffle plate
- stirred tank
- heat
- exchange baffle
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Abstract
The present invention discloses an agitator with thermal insulation casing type heat exchanging aprons. Heat exchanging aprons of the agitator are erectly and uniformly distributed on a circumference which has the same center as the agitator wall, each heat exchanging apron is formed by sheathing an inner pipe and an outer pipe, and the inner pipe and the outer pipe have the same center. The outside of the inner pipe has a thermal insulation layer which can be a coating plastic layer, or an air layer or a vacuum layer, wherein the air layer or the vacuum layer is clipped in a sealed cavity surrounding the outside of the inner pipe. The heat interchanging aprons have the advantages of simple structure and convenient manufacture. The heat interchanging aprons not only have good apron effect and good heat interchanging effect, but also have the characteristics of difficult kiss coating and easy cleaning.
Description
The present invention relates to a kind of stirred tank, particularly relate to a kind of stirred tank with the thermal insulation casing type heat exchanging baffle plate with the heat exchange baffle plate.
Stirred tank is a kind of container or device that has stirring, can be in order to mixing or the separation of carrying out material, as mixing kettle, stripping vessel etc.; Also can be used to carry out some chemical reaction, as reactor or polymeric kettle etc.
In stirred tank, the flox condition of material is considerable, and is general except that with appropriate stirring system, also will be furnished with rational baffle plate, stirs turning round and round or forming vortex of the material flow that causes to eliminate, and plays the control flow pattern and strengthen the effect of mixing effect.In stirred tank, carry out in the process of mixing of materials, separation or reaction, particularly in some polymerization process, the inwall of still and internals surface be deposition one deck material easily, need regularly clear still, this has just directly influenced effective utilization of capacity of stirred tank, therefore require the internals of still should be difficult for depositing material, and behind the deposition material, should be easy to remove.In addition, in stirred tank, carry out in the process of mixing of materials, separation or reaction, often be attended by heat exchange, what for example have need provide heat to material by the external world, then needing of having removed the heat (as reaction heat, heat of polymerization etc.) that material produces, to guarantee normally carrying out of process, it is needed that this is not only safety operation, and be desired for obtaining the homogeneous quality product.Heat-exchange method commonly used be stirred tank add a chuck or outside coil pipe, chuck or outside feed heat-exchange working medium in the coil pipe, to carry out the heat exchange of material in heat-exchange working medium and the still, realization is removed heat to the material heat supply or to material, but owing to be subjected to kettle external surface area and structural restriction, its exchange capability of heat is limited, thereby needs to carry out interior heat exchange at still Nei Jianei heat exchanger tube toward contact.Therefore in stirred tank, install a kind of not only played baffle effect but also play in the heat exchange baffle plate of heat exchange effect be a kind of comparatively desirable scheme, it both can destroy eddy current, the control flow pattern, thus strengthened mixing effect, simultaneously can realize interior heat exchange again, thereby also strengthen the heat exchange effect of stirred tank.Reported some multi-form heat exchange baffle plates in recent years, common heat exchange baffle plate is finger-type baffle plate, D shape hydraulic barrier, and vertical coiled heat exchange baffle plate etc.For example, U.S. Pat P4029143 has proposed a kind of polymerization reaction kettle with finned tubular radiator and axial flow type agitator, and it is better that it removes thermal effect; The clear 64-85122 of day disclosure special permission communique discloses a kind of stirred autoclave that vertical heat exchanger tube is housed, be applicable to the mixing of liquid and synthesizing of high viscosity high molecular polymer, but the effect of existing heat exchange baffle plate is still not ideal enough, and its complex structure, the surface deposits material easily and is difficult to remove (as form kiss-coating easily on the heat exchange baffle plate in polymerization process), this has further influenced the heat exchange effect of heat exchange baffle plate again, in a word, existing heat exchange baffle plate is in heat exchange area and heat exchange effect, control flow pattern and mixing effect, the resultant effect that is easy to three aspects such as removing after being difficult for the deposition material and depositing material is still not ideal enough.
The purpose of this invention is to provide a kind of stirred tank with the thermal insulation casing type heat exchanging baffle plate, that this stirred tank has is simple in structure, good effect of heat exchange, baffle plate effect are good, be difficult for bridging and clear still advantage fast and easily.
The object of the present invention is achieved like this: said stirred tank mainly is made up of kettle, stirring system and one group of heat exchange baffle plate, each heat exchange baffle plate by inside and outside two concentric tubes be nested together form, the heat exchange baffle plate uprightly be distributed on the concentric circumference of stirred tank wall on, and be connected with the outlet header with the intake header of heat-exchange working medium respectively, but heat exchange baffle plate biserial is arranged in the major diameter still, be distributed on two concentric circles of different radii, the number of every row heat exchange baffle plate is 2～12, be preferably 4～8, the caliber of heat exchange baffle plate is generally D
N50～D
N300mm, the standpipe cross section of heat exchange baffle plate can be circular, also can be oval-shaped or oblate, the outer tube of heat exchange baffle plate is light-wall pipe commonly used, also can have straight fins in the tube outside, the outer tube-surface of heat exchange baffle plate also can carry out polishing, surface roughness is better than 3.2, preferably be better than 0.2, the interior pipe of heat exchange baffle plate also can be light-wall pipe commonly used, on its surface one thermal insulation layer is arranged, the thermal insulation layer of tube-surface can be the plastics that one deck applies in the heat exchange baffle plate, as apply one deck epoxy resin, polyethylene or polypropylene etc., the thermal insulation layer of tube-surface can also be outer air layer or the vacuum layer of pipe in being enclosed in the heat exchange baffle plate, at this moment the outside of pipe puts one again than the little pipe of heat exchange baffle plate outer tube diameter in the heat exchange baffle plate, the outer surface sealing-in of pipe in the two ends of this pipe and the heat exchange baffle plate and form closed cavity, this moment, thermal insulation layer can be an air layer that is full of this closed cavity, under the situation of special requirement, also the air in the closed cavity can be found time, thereby thermal insulation layer just is enclosed in the vacuum layer in the closed cavity, thickness between closed cavity two walls should guarantee the suitable space size between heat exchange baffle plate inner and outer pipes, require concrete selecting by the heat-exchange working medium flow velocity, generally its thickness is 20～100mm.The heat exchange baffle plate of band closed cavity is applicable to that more internal diameter is at least the stirred tank of 2000mm.
During operation, heat-exchange working medium flows into from the import endless tube between the inner and outer pipes of each heat exchange baffle plate, is flowed out by the outlet endless tube through interior pipe then.
In said stirred tank, kettle is common apparatus commonly used, and stirring system also is general mixing plant, can adopt alr modes such as general axial flow type, radial type or mixed type.In addition, also configurable as required other accessory, as the external jacket of stirred tank, reinforced uniform distribution plate, the turnover pipeline of material etc.
Fig. 1 is the schematic diagram of stirred tank of the present invention.
The schematic diagram that Fig. 2 arranges for each heat exchange baffle plate of stirred tank of the present invention.
Fig. 3 is the heat exchange baffle plate schematic diagram of band coated plastics thermal insulation layer.
Fig. 4 is the heat exchange baffle plate schematic diagram of band air heat-insulation layer.
Below in conjunction with accompanying drawing the present invention is further described, but the present invention is not limited to this.
In Fig. 1 to Fig. 3, stirred tank [1] is equipped with stirring system [2], with the concentric garden of stirred tank wall on week, uprightly be evenly equipped with four heat exchange baffle plates, each heat exchange baffle plate is nested together by the concentric tube of two garden shapes and forms.The heat exchange baffle plate outer tube [3] of surface finish communicates with heat-exchange working medium import endless tube [5], pipe [4] is connected with heat-exchange working medium outlet endless tube [6] in the heat exchange baffle plate, heat-exchange working medium import endless tube [5] connects inlet house steward [7], and heat-exchange working medium outlet endless tube [6] connects outlet header [8].Coated has the thermal insulation layer [9] of one deck epoxy resin on the surface of the interior pipe of heat exchange baffle plate [4].In the stirred tank operating process, heat-exchange working medium is by inlet house steward [7] space between the pipe [4] in heat-exchange working medium import endless tube [5] flows into heat exchange baffle plate outer tube [3] and heat exchange baffle plate, and then enters heat-exchange working medium and export endless tube [6] and flow out through outlet header [8] by interior manage [4] of heat exchange baffle plate.Because the heat exchange between the heat-exchange working medium in the pipe [4] in heat exchange baffle plate outer tube [3] and heat exchange baffle plate has been avoided in the effect of thermal insulation layer [9], thereby improved the heat exchange effect of material in heat-exchange working medium and the still.And because heat exchange baffle plate outer tube [3] surface finish and have simple upright shape, material is difficult for deposition thereon, thereby has prolonged the operation cycle of stirred tank; When maintenance, compare more easy-maintaining and cleaning with existing heat exchange baffle plate.
When the stirred tank diameter was big, the diameter of the outer tube of heat exchange baffle plate was bigger, at this moment can adopt the embodiment of another kind of heat exchange baffle plate.As shown in Figure 4, the outer surface of pipe [4] puts a pipe [10] littler than heat exchange baffle plate outer tube [3] diameter again in the heat exchange baffle plate, manage the outer surface sealing-in of [4] in the two ends of this pipe and the heat exchange baffle plate and form closed cavity, be full of air in the cavity, form air heat-insulation layer [11], thermal insulation layer thickness is 30mm.After adopting air heat-insulation layer, because the insulation effect of air is better than plastics coating, can more effectively avoid the heat exchange between the heat-exchange working medium in the pipe [4] in heat exchange baffle plate outer tube [3] and heat exchange baffle plate, thereby improve the heat exchange effect of material in heat-exchange working medium and the still.In addition, the caliber one of pipe [4] regularly adopts air heat-insulation layer can reduce the free air space between the pipe [4] in heat exchange baffle plate outer [3] and the heat exchange baffle plate, thereby forms the heat-exchange working medium flow velocity that suits the requirements, to guarantee good heat exchange effect in the heat exchange baffle plate.
Stirred tank of the present invention can be used as the equipment that need to carry out stirring operation, is particularly suitable for conduct The emulsion of the emulsion polymerisation of conjugated diene or polymerisation in solution, conjugated diene-vinyl-arene altogether Poly-or solution copolymerization, the emulsion polymerisation of ethene-vinyl acetate, the emulsion polymerisation of acrylate, chlorine The polymeric kettle of the suspension polymerisation of ethene etc. Adopt band thermal insulation casing type heat exchanging gear of the present invention The stirred tank of plate has the following advantages:
1. owing to increased thermal insulation layer in the heat exchange baffle plate, avoided heat-exchange working medium inside and outside the heat exchange baffle plate Heat exchange when flowing between pipe, and also can control heat-exchange working medium by the thickness of adjusting thermal insulation layer and exist Flow velocity when flowing between heat exchange baffle plate inner and outer pipes, thus heat-exchange working medium and storeroom not only improved Heat transfer effect, and can reach best heat transfer effect.
2. the heat exchange baffle plate that adopts of stirred tank of the present invention, the row that the number of its baffle plate, baffle plate are arranged The shape of the outer tube diameter of number, baffle plate, the outer tube section of baffle plate and size etc. all can change on request Become, thereby can obtain required heat exchange area and baffle plate effect, thereby strong adaptability, effective.
3. the heat exchange baffle plate that adopts of this stirred tank, compared with prior art, its outer tube has directly The simple structure of shape pipe, not only easily manufactured, and also material is difficult at heat exchange baffle plate outer tube table in the still The face deposition also namely is difficult for bridging.
4. when maintenance cleaning stirred tank equipment, stirred tank cleaning of the present invention is easy, and clearance time is short.For 10～15 cubic metres general stirred tank, its clear still time is approximately 72～168 hours, and the onesize stirred tank of the present invention, the clear still time only needs 18 hours.
Claims (11)
1, a kind of stirred tank with the thermal insulation casing type heat exchanging baffle plate, comprise kettle, stirring system and one group of heat exchange baffle plate, each heat exchange baffle plate uprightly be distributed on the concentric circumference of stirred tank wall on, and be connected with the outlet header with the intake header of heat-exchange working medium respectively, it is characterized in that the heat exchange baffle plate is made up of inside and outside two concentric tubes, have on the thermal insulation layer of one deck epoxy resin or the outer surface at coated on the surface of interior pipe and to put one again than the little pipe of heat exchange plate washer outer tube diameter at interior pipe, the outer surface sealing-in of pipe in the two ends of this pipe and the heat exchange plate washer and form closed cavity, be full of air in the cavity, form air heat-insulation layer.
2, according to the described stirred tank of claim 1, the thickness of interlayer that it is characterized in that said closed cavity is 20～100mm.
3,, it is characterized in that the outer surface of heat exchange baffle plate outer tube polishes according to the described stirred tank of claim 1.
4, according to the described stirred tank of claim 1, the standpipe cross section that it is characterized in that the heat exchange baffle plate is circular.
5, according to the described stirred tank of claim 1, the standpipe cross section that it is characterized in that the heat exchange baffle plate is oblate.
6, according to the described stirred tank of one of claim 1～5, it is characterized in that each heat exchange baffle plate uprightly be distributed on the concentric same circumference of stirred tank wall on.
7,, it is characterized in that each heat exchange baffle plate uprightly is distributed on respectively on two circumference different with the concentric radius of stirred tank wall according to the described stirred tank of one of claim 1～5.
8, according to the described stirred tank of claim 6, the number that it is characterized in that the heat exchange baffle plate is 2～12.
9, according to the described stirred tank of claim 6, the number that it is characterized in that the heat exchange baffle plate is 4～8.
10, according to the described stirred tank of claim 7, the number that it is characterized in that every row heat exchange baffle plate is 2～12.
11, according to the described stirred tank of claim 7, the number that it is characterized in that every row heat exchange baffle plate is 4～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115273A CN1057237C (en) | 1997-08-29 | 1997-08-29 | Agitator with thermal insulation casing type heat exchanging apron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97115273A CN1057237C (en) | 1997-08-29 | 1997-08-29 | Agitator with thermal insulation casing type heat exchanging apron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1210028A CN1210028A (en) | 1999-03-10 |
| CN1057237C true CN1057237C (en) | 2000-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97115273A Expired - Lifetime CN1057237C (en) | 1997-08-29 | 1997-08-29 | Agitator with thermal insulation casing type heat exchanging apron |
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|---|---|
| CN (1) | CN1057237C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109482120A (en) * | 2018-12-14 | 2019-03-19 | 南通三圣石墨设备科技股份有限公司 | Graphite heat exchanger and method built in a kind of novel reaction kettle |
| CN111871273A (en) * | 2020-08-05 | 2020-11-03 | 安徽泓顺源生物科技有限公司 | Heating device for honey processing production and anti-crystallization method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6485122A (en) * | 1987-09-25 | 1989-03-30 | Mitsubishi Heavy Ind Ltd | Agitation apparatus with heat exchanger |
| CN2225892Y (en) * | 1995-05-18 | 1996-05-01 | 华南理工大学 | Retroverted baffle for stirrer |
-
1997
- 1997-08-29 CN CN97115273A patent/CN1057237C/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6485122A (en) * | 1987-09-25 | 1989-03-30 | Mitsubishi Heavy Ind Ltd | Agitation apparatus with heat exchanger |
| CN2225892Y (en) * | 1995-05-18 | 1996-05-01 | 华南理工大学 | Retroverted baffle for stirrer |
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| Publication number | Publication date |
|---|---|
| CN1210028A (en) | 1999-03-10 |
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Granted publication date: 20001011 |