CN107469742A - A kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates - Google Patents
A kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates Download PDFInfo
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- CN107469742A CN107469742A CN201710789206.0A CN201710789206A CN107469742A CN 107469742 A CN107469742 A CN 107469742A CN 201710789206 A CN201710789206 A CN 201710789206A CN 107469742 A CN107469742 A CN 107469742A
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- reactor
- connecting tube
- kettle
- deaerates
- stop valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00245—Avoiding undesirable reactions or side-effects
- B01J2219/00254—Formation of unwanted polymer, such as "pop-corn"
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- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates, comprise the following steps：S1, in connecting tube one end air supply pipe is connected, air supply pipe is provided with opening/shutting valve；S2, pipe outer wall cladding muff is being connected, muff includes some sections of heat-insulation units, and heat-insulation unit is set in distance；S3, connecting tube both ends set stop valve, in reactor after completion of the reaction, close stop valve；S4, opening/shutting valve is opened, pressurizeed by air supply pipe into connecting tube, until when connecting tube internal pressure reaches 0.14MPA 0.2MPA, close opening/shutting valve；S5, when reactor start again at reaction feed when, stop valve open.Supplied by air supply pipe into connecting tube, increase the air pressure in connecting tube, so as to increase the temperature needed for moisture evaporation formation saturated vapor, reduce the possibility of connecting tube encrustation.
Description
Technical field
The present invention relates to the preparation of chemical latex, and in particular to one kind is used to connect inside pipe wall between reactor and degassing kettle
Good antiscale property method.
Background technology
Latex refers to polymer particles and is dispersed in water the colloid emulsion to be formed.Also known as latex.Traditionally by rubber particle
Aqueous dispersion be referred to as latex, claim latex product by product made of raw material of latex, it is common such as sponge, gloves, toy, glue
Pipe etc..In the market has produced the complete set of equipments of latex.
Such as the patent that notification number is 204454965U, a set of latex production system, including reactor, institute which disclose
The material inlet for stating reactor is connected with holding tank, and the reactor is connected with gas-liquid separator, the material of the reactor
Outlet is connected with degassing kettle, and the degassing kettle is connected with adjustment tank, and the adjustment tank is connected with finished product memory block, the reactor
Also connected respectively at initiator feed tank with emulsifying agent head tank, the emulsifying agent head tank is connected with emulsifying agent dispensing area, institute
State degassing kettle to be also connected with the emulsifying agent dispensing area, be additionally provided with water tank and reducing agent tank, the material of the reactor therebetween
Preparation tank is additionally provided between outlet and the emulsifying agent dispensing area.
Connected between reactor and degassing kettle by connecting tube, the product for generating reactor is entered de- by connecting tube
In gas kettle.Because product degassing need to be carried out in 50 DEG C of high temperature above, and the product temperatur out of reactor out typically 50 DEG C ~
75℃.Therefore muff can be typically coated in connecting tube.
After product conveys, connecting tube both ends can be closed.Continue to generate product in reactor, taken off in the kettle that deaerates
Gas.Now product is stayed in connecting tube always.Now if gas temperature is always held at higher temperature in connecting tube, it can cause
Water evaporation in product, make butadiene or styrene that polymerization hair can occur and answer, production polymer buildup is in connecting tube, to rear
Product quality of the phase Jing Guo connecting tube impacts.
The content of the invention
To be used in view of the deficienciess of the prior art, it is an object of the invention to provide one kind between reactor and degassing kettle
The good antiscale property method of inside pipe wall is connected, reduces the probability of connecting tube encrustation.
To achieve the above object, the invention provides following technical scheme：
A kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates, it is characterized in that：Comprise the following steps：
S1, in connecting tube one end air supply pipe is connected, air supply pipe is provided with opening/shutting valve；
S2, pipe outer wall cladding muff is being connected, muff includes some sections of heat-insulation units, and heat-insulation unit is set in distance；
S3, connecting tube both ends set stop valve, in reactor after completion of the reaction, close stop valve；
S4, opening/shutting valve is opened, pressurizeed by air supply pipe into connecting tube, until connecting tube internal pressure reaches 0.14MPA-
During 0.2MPA, opening/shutting valve is closed；
S5, when reactor start again at reaction feed when, stop valve open.
By using above-mentioned technical proposal, heat-insulation layer is incubated to connecting tube, is reduced product and is being flowed through connecting tube
Shi Fasheng thermal losses, so as to reduce Heated Products institute calorific requirement in later stage degassing kettle, save the energy.
When stop valve is closed, product stream is in connecting tube.It is coated with the connecting tube of heat-insulation unit because temperature is too high,
The water evaporation in product can be caused, cause to have polymer buildup in connection inside pipe wall.Now by air supply pipe to connecting tube
Interior supply, increase the air pressure in connecting tube, so as to increase the temperature needed for moisture evaporation formation saturated vapor, reduce connection
The possibility of inside pipe wall fouling.
The further setting of the present invention is：In step s 5, after reactor is first fed 1min ~ 2min, it is then turned on stop valve.
By using above-mentioned technical proposal, so that it is guaranteed that there are enough products to be supplied in degassing kettle in connecting tube, reduce
The time of degassing kettle dry run.
The further setting of the present invention is：The connecting tube side is provided with compressed air cylinder, the air supply pipe connection compression
Air tank and connecting tube, the compressed air cylinder side are provided with air compressor machine, and the supply end of the air compressor machine is communicated in compressed air
Tank.
By using above-mentioned technical proposal, compressed air is endlessly provided into compressed air cylinder by air compressor machine,
It ensure that compressed air cylinder is provided to the enough pressure of connecting tube, saturated vapor will not be formed by reaching connecting tube internal pressure
Degree.
The further setting of the present invention is：Air supply pipe described in step S1 is connected to connecting tube close to reactor one end.
By using above-mentioned technical proposal, connecting tube is higher close to reactor one end temperature, starts to supply from there, makes company
The pressure that the end first reaches higher is taken over, reduces the possibility of connecting tube encrustation.
The further setting of the present invention is：The connecting tube includes storing section and the slow pressure section set in dilatation, described slow
Pressure section radius is more than storing section radius, and the slow pressure section is provided with two and is located at storing section both ends respectively, and the stop valve is located at
In storing section.
By using above-mentioned technical proposal, after product completes degassing in degassing kettle, stop valve is opened, continues reactor
To degassing kettle feed.Now because the air pressure in connecting tube is too high, therefore the air-flow in short time inner connection tube can expand towards both ends
Dissipate, now air-flow enters slow pressure section, air-flow is produced loss, reduces its pressure.And then reduce connecting tube and reactor
The junction of junction and connecting tube and degassing kettle, pressure when being opened due to stop valve and caused vibration, the company of reducing
The broken possibility of adapter.
The further setting of the present invention is：The storing section is provided with close to reactor one end to be used to detect product in storing section
The temperature sensor of temperature, the storing section are provided with the air pressure sensing for being used for detecting pressure in storing section close to degassing kettle one end
Device, the temperature sensor are electrically connected with controller, and the controller electrically connects baroceptor, opening/shutting valve and stop valve,
The temperature that the temperature sensor detects is T, and the air pressure pressure that the baroceptor detects is P,
When stop valve closing and T and P coincidence formulas：
During * (1/Te -1/T) of ln (P/Pe)+0.05=(Δ vapHe/R), the controller control opening/shutting valve is closed；
When stop valve is closed, if ln (P/Pe)+0.05 ＜ (Δ vapHe/R) * (1/Te -1/T), the controller control opens and closes
Valve opening；
In above-mentioned formula, Pe, Te are respectively the pressure and temperature of product in normal conditions；Δ vapHe is that the component materials are rubbed
That heat of gasification；R is gas constant.
By using above-mentioned technical proposal, the air pressure in storing section can be specifically set according to temperature in connecting tube, it is ensured that storage
Moisture in material section will not evaporate.And be not required to manually estimate air pressure in storing section, to adjust opening/shutting valve, make more convenient operation.
The further setting of the present invention is：Interval between the adjacent heat-insulation unit from close to reactor one end to close
Degassing kettle one end becomes big successively.
By using above-mentioned technical proposal, when product temperatur is relatively low, it is less with the heat exchange in the external world, i.e. the unit interval
The heat of interior forfeiture is less.Interval between heat-insulation unit becomes larger, and the temperature that can make product in degassing kettle is in moderate tone
Decline, reduce the crest of temperature change, so that the pressure in storing section is more stable.
The further setting of the present invention is：The thickness of each heat-insulation unit is from close to reactor one end to remote reaction
Kettle one end tapers into.
By using above-mentioned technical proposal, the temperature of product in degassing kettle is declined in moderate tone, reduce temperature change
Crest so that the pressure in storing section is more stable.
The further setting of the present invention is：The thickness that the connecting tube corner corresponds to heat-insulation unit is connecting tube straightway
The 1/3 ~ 1/2 of corresponding heat-insulation unit thickness.
By using above-mentioned technical proposal, the roughness that connecting tube has arrived corner is larger, therefore corner is more also easy to produce knot
Dirt.The heat-insulation unit thickness of corner is reduced, so as to reduce the possibility of corner fouling.
The present invention has advantages below：
1st, the thermal loss of the product in connecting tube is reduced；
When the 2nd, reducing product and resting in connecting tube, the probability of in-tube fouling is connected；
3rd, the broken possibility of connecting tube is reduced.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment；
Fig. 2 is the connection diagram of controller in embodiment.
Reference：1st, connecting tube；2nd, storing section；3rd, pressure section is delayed；4th, stop valve；5th, muff；6th, heat-insulation unit；7th, press
Contracting air tank；8th, air supply pipe；9th, opening/shutting valve；10th, air compressor machine；11st, temperature sensor；12nd, baroceptor；13rd, controller；
14th, reactor；15th, deaerate kettle.
Embodiment
The present invention will be further described referring to the drawings.
Embodiment one：
As shown in figure 1, a kind of attachment structure for coupled reaction kettle and the kettle that deaerates, including connecting tube 1, connecting tube 1 include storage
Expect the gentle pressure section 3 of section 2, slow pressure section 3 is provided with two and is located at the both ends of storing section 2 respectively.Slow pressure section 3 is set in dilatation, and slow pressure
3 radiuses of section are more than the radius of storing section 2.Slow pressure section 3 and the inwall of storing section 2 are in arc transition.Two slow pressure sections 3 distinguish coupled reaction
The material outlet of kettle 14 and the material inlet of degassing kettle 15.
As shown in figure 1, the both ends of storing section 2 are equipped with stop valve 4.Storing section 2 is coated with muff 5, and muff 5 includes
Some sections of heat-insulation units 6, heat-insulation unit 6 are set in distance.Interval between adjacent heat-insulation unit 6 is from close to the one end of reactor 14
Become big successively to close to degassing kettle 15 one end.The thickness of each heat-insulation unit 6 is from close to one end of reactor 14 to remote reactor
14 one end taper into.The thickness that the corner of connecting tube 1 corresponds to heat-insulation unit 6 corresponds to the thickness of heat-insulation unit 6 for the straightway of connecting tube 1
The 5/12 of degree.
As shown in figure 1, the side of connecting tube 1 is provided with compressed air cylinder 7, confession is connected between compressed air cylinder 7 and connecting tube 1
Tracheae 8, air supply pipe 8 are connected to connecting tube 1 close to the one end of reactor 14.Air supply pipe 8 connects compressed air cylinder 7 and connecting tube 1, supplies
Tracheae 8 is provided with opening/shutting valve 9.The side of compressed air cylinder 7 is provided with air compressor machine 10, and the supply end of air compressor machine 10 is communicated in compression sky
Gas tank 7.
As shown in figure 1, storing section 2 is provided with temperature sensor 11 close to the one end of reactor 14, temperature sensor 11 is used to examine
Product temperatur in storing section 2 is surveyed, the temperature for detecting to obtain is T.Storing section 2 is provided with baroceptor close to degassing kettle 15 one end
12, baroceptor 12 is used to detect pressure in storing section 2, and the air pressure pressure detected is P.
As shown in Fig. 2 temperature sensor 11 is electrically connected with controller 13, controller 13 be electrically connected to baroceptor 12,
Opening/shutting valve 9 and stop valve 4.
When stop valve 4 is closed, if T and P coincidence formulas one, controller 13 controls opening/shutting valve 9 to close；If T and P meet public affairs
Formula two, controller 13 control opening/shutting valve 9 to open.
Formula one：During * (1/Te -1/T) of ln (P/Pe)+0.05=(Δ vapHe/R)；
Formula two：Ln (P/Pe)+0.05 ＜ (Δ vapHe/R) * (1/Te -1/T).
In above-mentioned formula, Pe, Te are respectively the pressure and temperature of product in normal conditions；Δ vapHe is the component thing
Matter heat of vaporization；R is gas constant.
The operation principle of the attachment structure is as follows：
After reactor 14 is fed, stop valve 4 is closed, reactor 14 is continued reaction generation product, degassing kettle 15 is to production
Thing is de-gassed.Now there is portion of product in connecting tube 1.Muff 5 is incubated to it, reduces thermal loss.
Now due in connecting tube 1 air pressure it is smaller, therefore opening/shutting valve 9 is opened, and compressed air cylinder 7 is by air supply pipe 8 to even
Supplied in adapter 1, uprise air pressure in connecting tube 1, and then uprise the temperature in connecting tube 1 in product needed for moisture evaporation.
Until air pressure meets formula one in connecting tube 1, moisture evaporation in product is reduced, makes butadiene or styrene that polymerization hair can occur
Should, probability of the production polymer buildup in connecting tube 1.
Embodiment two：
A kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates,
Comprise the following steps：
S1, in the one end of connecting tube 1 air supply pipe 8 is connected, air supply pipe 8 is provided with opening/shutting valve 9, and air supply pipe 8 is back to the one end of connecting tube 1
It is sequentially provided with compressed air cylinder 7 and air compressor machine 10；
S2, the outer wall of connecting tube 1 successively be spaced cladding some sections of heat-insulation units 6, the structure of heat-insulation unit 6 in embodiment one with being incubated
The structure of unit 6 is identical；
S3, the both ends of connecting tube 1 set stop valve 4, in reactor 14 after completion of the reaction, close stop valve 4；
S4, now air pressure meets formula two in connecting tube 1, and controller 13 controls opening/shutting valve 9 to open, by air supply pipe 8 to even
Pressurizeed in adapter 1, until the internal pressure P of connecting tube 1 meets formula one, controller 13 controls opening/shutting valve 9；
S5, when reactor 14 start again at reaction feed when, reactor 14 is first fed 1min ~ 2min, then opens stop valve 4.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates, it is characterized in that：Comprise the following steps：
S1, in connecting tube（1）One end connects air supply pipe（8）, air supply pipe（8）It is provided with opening/shutting valve（9）；
S2, in connecting tube（1）Outer wall coats muff（5）, muff（5）Including some sections of heat-insulation units（6）, heat-insulation unit
（6）It is set in distance；
S3, in connecting tube（1）Both ends set stop valve（4）, in reactor（14）After completion of the reaction, stop valve is closed（4）；
S4, open opening/shutting valve（9）, pass through air supply pipe（8）To connecting tube（1）Interior pressurization, until connecting tube（1）Internal pressure reaches
During to 0.14MPA-0.2MPA, opening/shutting valve is closed（9）；
S5, work as reactor（14）When starting again at reaction feed, stop valve（4）Open.
2. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 1, its
It is characterized in：In step s 5, reactor（14）After being first fed 1min ~ 2min, stop valve is then turned on（4）.
3. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 2, its
It is characterized in：The connecting tube（1）Side is provided with compressed air cylinder（7）, the air supply pipe（8）Connect compressed air cylinder（7）And even
Adapter（1）, the compressed air cylinder（7）Side is provided with air compressor machine（10）, the air compressor machine（10）Supply end be communicated in compression
Air tank（7）.
4. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 3, its
It is characterized in：Air supply pipe described in step S1（8）It is connected to connecting tube（1）Close to reactor（14）One end.
5. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 4, its
It is characterized in：The connecting tube（1）Including storing section（2）With the slow pressure section set in dilatation（3）, the slow pressure section（3）Radius is big
In storing section（2）Radius, the slow pressure section（3）It is located at provided with two and respectively storing section（2）Both ends, the stop valve（4）Position
In storing section（2）On.
6. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 5, its
It is characterized in：The storing section（2）Close to reactor（14）One end, which is provided with, to be used to detect storing section（2）The temperature of interior product temperatur passes
Sensor（11）, the storing section（2）Close to degassing kettle（15）One end, which is provided with, to be used to detect storing section（2）The air pressure sensing of interior pressure
Device（12）, the temperature sensor（11）It is electrically connected with controller（13）, the controller（13）Electrically connect baroceptor
（12）, opening/shutting valve（9）And stop valve（4）, the temperature sensor（11）The temperature detected is T, the baroceptor
（12）The air pressure pressure detected is P,
Work as stop valve（4）Closing and T and P coincidence formulas：
During * (1/Te -1/T) of ln (P/Pe)+0.05=(Δ vapHe/R), the controller（13）Control opening/shutting valve（9）Close；
Work as stop valve（4）During closing, if ln (P/Pe)+0.05 ＜ (Δ vapHe/R) * (1/Te -1/T), the controller（13）
Control opening/shutting valve（9）Open；
In above-mentioned formula, Pe, Te are respectively the pressure and temperature of product in normal conditions；Δ vapHe is that the component materials are rubbed
That heat of gasification；R is gas constant.
7. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 6, its
It is characterized in：The adjacent heat-insulation unit（6）Between interval from close to reactor（14）One end is to close to degassing kettle（15）One end
Become successively big.
8. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 7, its
It is characterized in：Each heat-insulation unit（6）Thickness from close to reactor（14）One end is to away from reactor（14）One end is gradual
Diminish.
9. a kind of good antiscale property method for connecting inside pipe wall between reactor and the kettle that deaerates according to claim 8, its
It is characterized in：The connecting tube（1）Corner corresponds to heat-insulation unit（6）Thickness be connecting tube（1）Straightway corresponds to heat-insulation unit
（6）The 1/3 ~ 1/2 of thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710789206.0A CN107469742B (en) | 2017-09-05 | 2017-09-05 | A kind of good antiscale property method for connection inside pipe wall between reaction kettle and degassing kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710789206.0A CN107469742B (en) | 2017-09-05 | 2017-09-05 | A kind of good antiscale property method for connection inside pipe wall between reaction kettle and degassing kettle |
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| Publication Number | Publication Date |
|---|---|
| CN107469742A true CN107469742A (en) | 2017-12-15 |
| CN107469742B CN107469742B (en) | 2019-09-10 |
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ID=60604371
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|---|---|---|---|
| CN201710789206.0A Expired - Fee Related CN107469742B (en) | 2017-09-05 | 2017-09-05 | A kind of good antiscale property method for connection inside pipe wall between reaction kettle and degassing kettle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211905A (en) * | 1992-12-30 | 1994-08-02 | Shin Etsu Chem Co Ltd | Polymerization equipment |
| CN1903892A (en) * | 2006-08-03 | 2007-01-31 | 江苏圣杰实业有限公司 | Method of manufacturing halogenated rubber like polymer |
| CN204910847U (en) * | 2015-08-12 | 2015-12-30 | 江西国化实业有限公司 | A recovery unit that is arranged in electrolysis waste material hydrogen fluoride |
| CN105370998A (en) * | 2015-12-03 | 2016-03-02 | 贵州省材料产业技术研究院 | Descaling composite pipeline, descaling structure and descaling method |
-
2017
- 2017-09-05 CN CN201710789206.0A patent/CN107469742B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06211905A (en) * | 1992-12-30 | 1994-08-02 | Shin Etsu Chem Co Ltd | Polymerization equipment |
| CN1903892A (en) * | 2006-08-03 | 2007-01-31 | 江苏圣杰实业有限公司 | Method of manufacturing halogenated rubber like polymer |
| CN204910847U (en) * | 2015-08-12 | 2015-12-30 | 江西国化实业有限公司 | A recovery unit that is arranged in electrolysis waste material hydrogen fluoride |
| CN105370998A (en) * | 2015-12-03 | 2016-03-02 | 贵州省材料产业技术研究院 | Descaling composite pipeline, descaling structure and descaling method |
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| CN107469742B (en) | 2019-09-10 |
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