CN205061943U - Apparatus for preparing pilot scale of polycarbonate binary alcohol - Google Patents
Apparatus for preparing pilot scale of polycarbonate binary alcohol Download PDFInfo
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- CN205061943U CN205061943U CN201520686646.XU CN201520686646U CN205061943U CN 205061943 U CN205061943 U CN 205061943U CN 201520686646 U CN201520686646 U CN 201520686646U CN 205061943 U CN205061943 U CN 205061943U
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Abstract
The utility model relates to a production facility of binary alcohol discloses apparatus for preparing pilot scale of polycarbonate binary alcohol, and it includes reation kettle (16), and reation kettle (16) are equipped with burette (5) including kettle cover (6) on kettle cover (6), be equipped with on burette (5) and drip irrigation (1), being equipped with honeycomb duct (19) on kettle cover (6), being equipped with rectifying column (24) on honeycomb duct (19), be equipped with first condenser (25) on rectifying column (24), first condenser (25) are connected with second condenser (29), and second condenser (29) are connected with collector (32). The utility model has the advantages of product output is high, the height is rateed to conversion, the equipment power consumption is low.
Description
Technical field
The utility model relates to the production unit of dibasic alcohol, particularly relates to the pilot plant of preparation PCDL.
Background technology
PCDL (PCDL) is that in molecule, containing oligo-ester carbonate unit, two ends, with the new multicomponent alkylol cpd of hydroxyl, can be used to synthesize polycarbonate polyurethane of new generation.Its molecular structure is as follows:
compared with the polyurethane material synthesized by traditional polyvalent alcohol, polycarbonate polyurethane has excellent mechanical property, hydrolytic resistance, thermotolerance, scale resistance and photostabilization.Thus, PCDL (PCDL) is considered to a kind of polyvalent alcohol of current best performance, and is widely used in preparing various polyurethane materials that are best in quality, excellent performance.
Prepare the equipment of PCDL in the prior art, be all generally that a rumble is poured in reactor by all reaction raw materials, have two problems like this: 1. product production is not high; 2. transformation efficiency has problem, and reaction is reversible reaction, cannot transform toward beneficial direction when reaction reaches balance again; 3. equipment power consumption is high, and it is high that reactor fills the raw material energy consumption that so much raw material will be heated to same temperature more less than heating.
Summary of the invention
The utility model, for above-mentioned deficiency of the prior art, provides the pilot plant of preparation PCDL.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
The pilot plant of preparation PCDL, comprise reactor, reactor comprises kettle cover, and kettle cover is provided with dropper, and dropper is provided with drip irrigation; Kettle cover is provided with thrust-augmenting nozzle, and thrust-augmenting nozzle is provided with rectifying tower, and rectifying tower is provided with the first condenser, and the first condenser is connected with the second condenser, and the second condenser is connected with collector.
As preferably, dropper is provided with flow control valve, and drip irrigation is connected with emptying valve.
As preferably, thrust-augmenting nozzle is provided with guide valve, and be provided with drainage tube between the first condenser and the second condenser, drainage tube is provided with valve, and be provided with between the second condenser and collector and distillate pipe, collector is connected with discharge gate.
As preferably, also comprise communicating pipe and surge tank, surge tank was connected with collector by communicating pipe, and surge tank is connected with vacuum valve, and surge tank is connected with surge tank valve.
As preferably, the second condenser is provided with water of condensation import and condensation-water drain.
As preferably, kettle cover is provided with nitrogen protection pipe, and kettle cover is provided with vacuum meter.
As preferably, reactor also comprises shell, chuck, well heater, reaction vessel, discharge opening and opening for feed, is provided with chuck in shell, and shell is provided with well heater, and reaction vessel is connected with kettle cover, and reaction vessel is connected with discharge opening, and kettle cover is provided with opening for feed.
As preferably, also comprise anchor, motor, belt and agitator, anchor is connected with kettle cover, and anchor is provided with motor, and motor is connected with agitator by belt.
As preferably, kettle cover is connected with spiral coil cooling tube.
As preferably, shell is provided with oil-in and oil discharge outlet.
The utility model, owing to have employed above technical scheme, has significant technique effect:
Utilize rectifying tower, the first condenser and the second condenser to be discharged in collector by by product, principal product is back to reactor, then drip the mode of raw material by drip irrigation, chemical reaction transforms toward principal product direction, can improve transformation efficiency, thus improves product production; The mode being dripped raw material by drip irrigation also can reduce equipment energy consumption, and will lack because dropping raw material ratio adds all raw materials simultaneously, front the latter is heated to identical temperature, and the former consumes energy low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of Fig. 1 reactor.
The toponym that in accompanying drawing, each number designation refers to is as follows: wherein 1-drip irrigation, 2-feeding port, 3-emptying valve, 4-flow control valve, 5-dropper, 6-kettle cover, 7-vacuum meter, 8-nitrogen protection pipe, 9-shell, 10-spiral coil cooling tube, 11-reaction vessel, 12-oil discharge outlet, 13-discharge opening, 14-chuck, 15-anchor, 16-reactor, 17-well heater, 18-oil-in, 19-thrust-augmenting nozzle, 20-guide valve, 21-opening for feed, 22-motor, 23-agitator, 24-rectifying tower, 25-the first condenser, 26-valve, 27-drainage tube, the import of 28-water of condensation, 29-the second condenser, 30-condensation-water drain, 31-distillate pipe, 32-collector, 33-discharge gate, 34-communicating pipe, 35-vacuum valve, 36-surge tank, 37-surge tank valve, 38-belt.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
Embodiment 1
The pilot plant of preparation PCDL, comprise reactor 16, reactor 16 comprises kettle cover 6, and kettle cover 6 is provided with dropper 5, and dropper 5 is provided with drip irrigation 1; Kettle cover 6 is provided with thrust-augmenting nozzle 19, and thrust-augmenting nozzle 19 is provided with rectifying tower 24, and rectifying tower 24 is provided with the first condenser 25, first condenser 25 and is connected with the second condenser 29, second condenser 29 and is connected with collector 32.First condenser 25 is for the principal product that refluxes, and the second condenser 29 is for collecting by product in collector 32.
Dropper 5 is provided with flow control valve 4, and drip irrigation 1 is connected with emptying valve 3.The speed that flow control valve 4 drips for controlling raw material, emptying valve 3 is opened when adding raw material toward drip irrigation 1, is more conducive to adding raw material by air pressure.
Thrust-augmenting nozzle 19 is provided with guide valve 20, and be provided with drainage tube 27 between the first condenser 25 and the second condenser 29, drainage tube 27 is provided with valve 26, and be provided with between the second condenser 29 and collector 32 and distillate pipe 31, collector 32 is connected with discharge gate 33.For collecting by product when discharge gate 33 is opened.
Also comprise communicating pipe 34 and surge tank 36, surge tank 36 was connected with collector 32 by communicating pipe 34, and surge tank 36 is connected with vacuum valve 35, and surge tank 36 is connected with surge tank valve 37.Vacuum valve 35 is for connecting vacuum pump, and surge tank valve 37 is for unloading the material in surge tank 36.
Second condenser 29 is provided with water of condensation import 28 and condensation-water drain 30.Water enters from water of condensation import 28, goes out from condensation-water drain 30, thus forms the condensation effect of the second condenser 29.
Kettle cover 6 is provided with nitrogen protection pipe 8, and kettle cover 6 is provided with vacuum meter 7.Nitrogen protection pipe 8 is oxidized for preventing material, and vacuum meter 7 is for the vacuum pressure of detection reaction still 16.
Reactor 16 also comprises shell 9, chuck 14, well heater 17, reaction vessel 11, discharge opening 13 and opening for feed 21, be provided with chuck 14 in shell 9, shell 9 is provided with well heater 17, and reaction vessel 11 is connected with kettle cover 6, reaction vessel 11 is connected with discharge opening 13, and kettle cover 6 is provided with opening for feed 21.By the thermal oil in well heater 17 reacting by heating still 16 chuck 14, allow reaction vessel 11 heat up, create temperature condition to chemical reaction; Opening for feed 21 is for adding raw material; discharge opening 13 is for unloading principal product; nitrogen protection pipe 8 is full of nitrogen pressurization when discharge opening 13 discharging toward reaction vessel 11, completes discharging more smoothly under pressurized condition, and reaction vessel 11 and kettle cover 6 are tightly connected by fastening screw.
Also comprise anchor 15, motor 22, belt 38 and agitator 23, anchor 15 is connected with kettle cover 6, and anchor 15 is provided with motor 22, and motor 22 is connected with agitator 23 by belt 38.Anchor 15 is for equipment such as fixation reaction still 16 grade, and motor 22 drives agitator 23 by belt 38, and agitator 23 stirs raw material makes raw material fully react.
Kettle cover 6 is connected with spiral coil cooling tube 10.Spiral coil cooling tube 10, for playing cooling effect to material after the completion of reaction, completes discharging work quickly.
Shell 9 is provided with oil-in 18 and oil discharge outlet 12.Thermal oil enters chuck 14 from oil-in 18, and thermal oil is discharged from oil discharge outlet 12.
Principle of work of the present utility model is as follows:
Chemical reaction is mainly 1,6-ethylene glycol+carbonic acid dimethanol=PCDL+methyl alcohol, and wherein PCDL is principal product, and the boiling point of carbonic acid dimethanol is 90.1 DEG C, and methyl alcohol boiling point is 64 DEG C; Carbonic acid dimethanol and methyl alcohol can form azeotrope, and azeotropic point is at 63 DEG C, and the boiling point of 1,6-ethylene glycol and PCDL is greater than 63 DEG C, so confirm rectifying tower 24 desired temperature at 63 DEG C.
One, by reaction vessel 11 and kettle cover 6 fastening screw locking, the resistance to air loss of reactor 16 is checked; Add in reaction vessel 11 by opening for feed 21 by 1,6-ethylene glycol, carbonic acid dimethanol is added drop-wise in reaction vessel 11 by feeding port 2 by drip irrigation 1.
Two, open guide valve 20, valve-off 26, open the first condenser 25, open water of condensation and intake toward water of condensation import 28, close discharge gate 33, open surge tank valve 37, by the thermal oil in well heater 17 reacting by heating still 16 chuck 14, for chemical reaction creates temperature condition, open motor 22 and set rotating speed, carbonic acid dimethanol is slowly added dropwise in reaction vessel 11 by drip irrigation 1.Along with the carrying out of reaction, the product that reaction produces slowly can rise to the intersection of the second condenser 29 and the first condenser 25 by rectifying 24.If when rectifying tower 24 temperature is higher than 63 DEG C, valve-off 26, material passes through the condensing reflux of the first condenser 25 in reaction vessel 11.When rectifying tower 24 temperature-stable a little less than or when equaling 63 DEG C, open valve 26, now methyl alcohol will be cooled by the second condenser 29 and flow in collector 32, and 1,6-ethylene glycol and PCDL Yin Wendu do not exceed boiling point and be back in reaction vessel 11.Along with the carrying out of reaction, the methyl alcohol produced in reaction vessel 11 is fewer and feweri, the temperature of rectifying tower top 24 also can decrease, by controlling dripping speed, being controlled the temperature of thermal oil by well heater 17 and improved the temperature of reactor 16 by the content of mental disorder of drip irrigation 1, true rectifying tower 24 temperature is near 63 DEG C, so that reaction continues.On this, methyl alcohol can be collected in collector 32 by measure, PCDL is back in reaction vessel 11, can improves chemical conversion rate, improves PCDL output.
If three tower top temperatures, significantly lower than 63 DEG C, are opened discharge gate 33, are unloaded by product; Close discharge gate 33 afterwards, close surge tank valve 37, close the first condenser 25, close water of condensation, open vacuum valve 25, and vacuum valve 25 is connected to vacuum pump, open vacuum pump and regulate vacuum tightness, the gas material be dispersed on equipment can be pumped to surge tank 36 and cool, and opens surge tank valve 37 and carries out discharging.
Four, close well heater 17, open spiral coil cooling tube 10, cool the material in reaction vessel 11, open discharge opening 13 afterwards, nitrogen protection pipe 8 is toward the pressurization of reaction vessel 11 inflated with nitrogen, and material from discharge opening out, obtains highly purified PCDL; Because in reaction process, methyl alcohol is slowly discharged, carbonic acid dimethanol is slowly instilled again, and chemical reversible reaction is carried out towards the direction of PCDL, so improve reaction conversion ratio, improves the output of PCDL, and reduces equipment energy consumption.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (10)
1. prepare the pilot plant of PCDL, comprise reactor (16), reactor (16) comprises kettle cover (6), it is characterized in that: kettle cover (6) is provided with dropper (5), dropper (5) is provided with drip irrigation (1); Kettle cover (6) is provided with thrust-augmenting nozzle (19), thrust-augmenting nozzle (19) is provided with rectifying tower (24), rectifying tower (24) is provided with the first condenser (25), first condenser (25) is connected with the second condenser (29), and the second condenser (29) is connected with collector (32).
2. the pilot plant of preparation PCDL according to claim 1, is characterized in that: dropper (5) is provided with flow control valve (4), and drip irrigation (1) is connected with emptying valve (3).
3. the pilot plant of preparation PCDL according to claim 1, it is characterized in that: thrust-augmenting nozzle (19) is provided with guide valve (20), drainage tube (27) is provided with between first condenser (25) and the second condenser (29), drainage tube (27) is provided with valve (26), be provided with to distillate between second condenser (29) and collector (32) and manage (31), collector (32) is connected with discharge gate (33).
4. the pilot plant of preparation PCDL according to claim 1, it is characterized in that: also comprise communicating pipe (34) and surge tank (36), surge tank (36) was connected with collector (32) by communicating pipe (34), surge tank (36) is connected with vacuum valve (35), and surge tank (36) is connected with surge tank valve (37).
5. the pilot plant of preparation PCDL according to claim 1, is characterized in that: the second condenser (29) is provided with water of condensation import (28) and condensation-water drain (30).
6. the pilot plant of preparation PCDL according to claim 1, is characterized in that: kettle cover (6) is provided with nitrogen protection pipe (8), and kettle cover (6) is provided with vacuum meter (7).
7. the pilot plant of preparation PCDL according to claim 1, it is characterized in that: reactor (16) also comprises shell (9), chuck (14), well heater (17), reaction vessel (11), discharge opening (13) and opening for feed (21), chuck (14) is provided with in shell (9), shell (9) is provided with well heater (17), reaction vessel (11) is connected with kettle cover (6), reaction vessel (11) is connected with discharge opening (13), and kettle cover (6) is provided with opening for feed (21).
8. the pilot plant of preparation PCDL according to claim 1, it is characterized in that: also comprise anchor (15), motor (22), belt (38) and agitator (23), anchor (15) is connected with kettle cover (6), anchor (15) is provided with motor (22), and motor (22) is connected with agitator (23) by belt (38).
9. the pilot plant of preparation PCDL according to claim 1, is characterized in that: kettle cover (6) is connected with spiral coil cooling tube (10).
10. the pilot plant of preparation PCDL according to claim 7, is characterized in that: shell (9) is provided with oil-in (18) and oil discharge outlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686646.XU CN205061943U (en) | 2015-09-07 | 2015-09-07 | Apparatus for preparing pilot scale of polycarbonate binary alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686646.XU CN205061943U (en) | 2015-09-07 | 2015-09-07 | Apparatus for preparing pilot scale of polycarbonate binary alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205061943U true CN205061943U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686646.XU Active CN205061943U (en) | 2015-09-07 | 2015-09-07 | Apparatus for preparing pilot scale of polycarbonate binary alcohol |
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| Country | Link |
|---|---|
| CN (1) | CN205061943U (en) |
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2015
- 2015-09-07 CN CN201520686646.XU patent/CN205061943U/en active Active
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| GR01 | Patent grant |