CN1016316B - Static electric heater for vacuum molecular distillation - Google Patents
Static electric heater for vacuum molecular distillationInfo
- Publication number
- CN1016316B CN1016316B CN 89108479 CN89108479A CN1016316B CN 1016316 B CN1016316 B CN 1016316B CN 89108479 CN89108479 CN 89108479 CN 89108479 A CN89108479 A CN 89108479A CN 1016316 B CN1016316 B CN 1016316B
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- electric heater
- molecular distillation
- static electric
- vacuum molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a static electric heater for vacuum molecular distillation, which is formed by that metal heat transfer sheets and sleeve tubes are overspread in a heating jacket, and electric heating tubes are inserted in the sleeve tubes. The heating jacket is connected with a hot oil diffuser filled with heat transfer oil. The present invention can cause heat to be transmitted to a heated wall surface directly, quickly and uniformly, without needing heat transfer oil circulating equipment, which simplifies device structure, lowers heat loss and enhances heat-transfer efficiency. The present invention is suitable for vacuum molecular stilling equipment used for separating and refining materials with high sensible heat, high boiling point and high oviscosity in chemical pharmacy industries.
Description
The invention belongs to the heater of vacuum molecular distillation equipment.
Molecular distillation equipment is to be used in the industrial production separating the equipment of high sensible heat, higher boiling and high viscosity substance made from extra care, purify.Owing to operating temperature, generally more than 150 ℃, so its heater adopts electric heater unit more.Generally adopt heating system of hot oil at present.This system mainly is made up of heat conduction oil tank, hot oil pump, feed-line etc.; In the heat conduction oil tank electrothermal tube is housed,, conduction oil is delivered in the heating jacket of distiller, return the heat conduction oil tank along return after the heat release and heat again, so move in circles by hot oil pump when conduction oil is heated to when temperature required.This kind heater homogeneous heating, but because the conduction oil heat transfer coefficient is lower, thereby heat transfer efficiency is lower, and owing to need attached recycle unit, increased the heat loss link, also enlarged equipment investment simultaneously and taken up room, feasible maintenance, complex management, cost increases.Domestic also have the mode of heating that directly electrical bar is inserted heating jacket, but this kind mode is easy to generate hot-spot, therefore is not suitable for handling heat-sensitive substance.
The present invention is directed to the deficiency that prior art exists, a kind of improvement project has been proposed, utilize the metal heat transfer coefficient than higher characteristics, one group of metal heat transfer parts is set in heating jacket, heat is directly reached the evaporation wall, need not conduction oil and circulate thereby simplify the structure, reduced heat loss, improved heat transfer efficiency.
The present invention is a kind of static electric heater for vacuum molecular distillation, and it comprises a heating jacket and one group of heater block, and heater block is contained in the heating jacket, it is characterized in that said heater block is made up of one group of heat transfer sheet, sleeve pipe and electrothermal tube.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cutaway view of structural representation of the present invention.
Fig. 3 is a schematic flow sheet of the present invention.
Below in conjunction with accompanying drawing invention is described in detail.
As shown in Figure 1, heating jacket is made of the evaporation wall 19 of chuck cylindrical shell 7 with distiller, and the chuck two ends are equipped with chuck upper sealing plate 13 and following shrouding 18 respectively; Electrothermal tube 14 inserts from the opening part on the upper sealing plate 13, and opening part is equipped with filler differential 10 and stuffing box 11, and airtight and watertight padding 4 wherein is housed, and selects asbestos packing for use according to temperature.Following shrouding 18 is provided with heat conductive oil inlet pipe 8, for the usefulness that charges into Oil Guide, also as the periodical blowdown interface tube.Chuck cylindrical shell 7 be provided with temperature sensor interface 6 and deep fat diffuser interface 5(also the overflow when adding conduction oil take over).Heater block is made up of one group of heat transfer sheet 15, sleeve pipe 16 and electrothermal tube 14, and heat transfer sheet 15 is one group of annular sheet metal.As shown in Figure 2, arrange some circular holes by circumference in equal parts on the heat transfer sheet 15; Sleeve pipe 16 is one group of metal straight pipe, and Circularhole diameter is advisable just in time to pass circular hole together on its external diameter and the heat transfer sheet; Heat transfer sheet 15 internal diameters are slightly larger than the distiller body diameter, and it just in time is enclosed within on the distillation body.The sleeve pipe number is identical with circular hole number on the heat transfer sheet, with heat transfer sheet by equidistant arrangement, be through on the sleeve pipe, insert electrothermal tube 14 in the sleeve pipes welding location again then.Promptly constituted heater block of the present invention.Above-mentioned heater block is packed in the heating jacket, seal, charge into conduction oil, promptly constitute heater of the present invention.The effect of conduction oil is to make that heat transfer is more even and avoid hot-spot.
Installation process of the present invention is as follows: this is external earlier upper sealing plate 13 to be inserted in distiller, then the heat transfer sheet that combines is inserted in, with location-plate 12,17 welding location, weld upper sealing plate 13 again, its upper shed is alignd with sleeve opening, check errorless after, chuck cylindrical shell 7 is inserted in from bottom to top, locatees, is welded in then on the upper sealing plate, be inserted in down shrouding 18, also tack welding is connected on distiller body and the chuck cylindrical shell, qualified on inspection after, electrothermal tube 14 is inserted sleeve pipes 16, sealing is tightened with filler and filler differential in the end, and heater so far of the present invention installs substantially.
Figure 3 shows that schematic flow sheet of the present invention.Wherein A is the distillation body, and B is a diffuser, and C is a temperature sensor.Thermophore-conduction oil enters diffuser by import a, enters in the heater through the dg pipeline, is full of the back and flows out from overflow pipe f, and close inlet valve and overflow valve this moment, and heater promptly enters the preparation state.Cause in the heating process that conduction oil expands and when producing a small amount of gas, can be guided to diffuser B through the ce pipeline, conduction oil can continue to use, and non-condensable gas is then discharged by fin radiator b.When heating-up temperature was lower than 250 ℃, conduction oil can use continuously needn't be changed in 2000 hours, only needed regular replenishment to get final product on a small quantity.
Because the present invention is covered with the metal heat transfer sheet outside being heated wall, falling heat-transfer oil again between the heat transfer sheet, make heat directly to reach and be heated wall by heat transfer sheet and conduction oil, thereby improved heat transfer efficiency, and conduct heat evenly, the hot-spot phenomenon avoided, the present invention need not the conduction oil circulation, simplify the structure thereby reduced the heat loss link, saved equipment investment simultaneously and take up room, reduced the production adult.
The present invention is applied to V
EIn the refining and distilling equipment (200 tons/year), heating surface (area) (HS 1.1m
2, 230 ℃ of heating-up temperatures, per kilogram V
EPower consumption 0.26kw, heat loss reduces about 80%.
Claims (7)
1, a kind of static electric heater for vacuum molecular distillation, it comprises a heating jacket and one group of heater block; Heater block is contained in the heating jacket, it is characterized in that said heater block is by one group of heat transfer sheet, and sleeve pipe and electrothermal tube are formed.
2,, it is characterized in that said heat transfer sheet is one group of annular sheet metal, the circular hole that has circumference in equal parts to arrange on it according to the said static electric heater for vacuum molecular distillation of claim 1.
3, according to claim 1 or 2 said static electric heater for vacuum molecular distillation, it is characterized in that said sleeve pipe is one group of metal straight pipe, its external diameter is advisable just in time to pass on the heat transfer sheet circular hole.
4, according to the said static electric heater for vacuum molecular distillation of claim 3, it is characterized in that said sleeve pipe penetrates the circular hole on the heat transfer sheet, make heat transfer sheet along quill to equidistant arrangement.
5,, it is characterized in that said electrothermal tube is inserted in the sleeve pipe according to claim 1 or 4 said static electric heater for vacuum molecular distillation.
6,, it is characterized in that falling heat-transfer oil in the said heating jacket according to the said static electric heater for vacuum molecular distillation of claim 1.
7,, it is characterized in that said heating jacket connects with a deep fat diffuser according to the said static electric heater for vacuum molecular distillation of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108479 CN1016316B (en) | 1989-11-11 | 1989-11-11 | Static electric heater for vacuum molecular distillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89108479 CN1016316B (en) | 1989-11-11 | 1989-11-11 | Static electric heater for vacuum molecular distillation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051679A CN1051679A (en) | 1991-05-29 |
| CN1016316B true CN1016316B (en) | 1992-04-22 |
Family
ID=4857591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89108479 Expired CN1016316B (en) | 1989-11-11 | 1989-11-11 | Static electric heater for vacuum molecular distillation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016316B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102085422A (en) * | 2009-12-08 | 2011-06-08 | 沈善明 | Continuous vacuum dynamic sublimation and desublimation machine |
-
1989
- 1989-11-11 CN CN 89108479 patent/CN1016316B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1051679A (en) | 1991-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |