CN107537413B - Olefin polymerization combined type method for controlling reaction temperature and device - Google Patents
Olefin polymerization combined type method for controlling reaction temperature and device Download PDFInfo
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- CN107537413B CN107537413B CN201610490022.XA CN201610490022A CN107537413B CN 107537413 B CN107537413 B CN 107537413B CN 201610490022 A CN201610490022 A CN 201610490022A CN 107537413 B CN107537413 B CN 107537413B
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Abstract
The present invention relates to a kind of olefin polymerization combined type method for controlling reaction temperature and devices, belong to chemical reaction temperature control technology field.The olefin polymerization combined type method for controlling reaction temperature, used device include thermostat, and thermostat successively connects into a circulation loop with overflow pipe, water supply tank, small pump, water supply pipe；The bottom of thermostat connects circulating pump by outlet pipe；The top of thermostat side is equipped with return pipe；Circulating pump is equipped with more, and every circulating pump is connected with after-heater, and after-heater connects circulation pipe.The present invention is controlled by DCS, realizes reaction temperature automatic control, while after-heater is devised in circulation line, is realized single thermostat and is controlled the temperature that multiple and different temperature polymerizations react, saves space, improve efficiency；The present invention also can be realized the temperature control of multiple identical temperature polymerizations reactions；The present invention is closed-loop operation, not will increase operating space humidity.
Description
Technical field
The present invention relates to a kind of olefin polymerization combined type method for controlling reaction temperature and devices, belong to chemical reaction temperature
Control technology field.
Background technique
Polyolefin is a kind of synthetic resin haveing excellent performance, and is widely used.Catalyst used in olefinic polymerization mainly has Z-N
The types such as type, chromium system, metallocene can discharge a large amount of heat in reaction process, need to carry out cooling in time, reach reaction temperature
Stability contorting, thus guarantee polyolefin resin performance stablize, improve product quality.In present temprature control method,
The corresponding reaction kettle of a water-bath is mostly used to carry out temperature control greatly, this will definitely increase equipment occupation space, cause space
Waste, efficiency are lower.And when a reaction process needs successively carry out under two reaction temperatures, i.e., when segmentation is reacted, mesh
Preceding water-bath temperature control method lacks quick response mode, and warm area transit time is longer.
CN203870493U discloses a kind of novel and multifunctional water bath device, including cabinet and controller, is equipped in cabinet
Moisturizing pond and at least two sea water baths, moisturizing pond are separately connected by priming valve and sea water bath, and having heaters is all provided in sea water bath,
It is additionally provided with the liquid level sensor of induction level position in sea water bath and measures the temperature sensor of internal bath temperature, level sensing
Device and temperature sensor are connect with controller respectively.By using controller, temperature sensor, liquid level sensor, heater and
Priming valve realize two sea water bath independent heatings, automatically add thermophilic hot water, timing alarm, overheat protector, prevent it is anhydrous heating and
The purpose of bath temperature fluctuation is greatly lowered.Two water-baths are really grouped together by the invention to carry out using realization
Respectively control of a set of control system to two water-baths, but there is no the water-bath circulatory systems for the invention, it can not be poly- to outside
Close reactor and carry out temperature control operation, while constant temperature method can only be carried out respectively in two water-baths, cannot achieve to water-bath into
The alternating temperature of row multi-temperature zone operates.
CN205109685U discloses a kind of self-watering multifunction constant temperature water-bath, provides a powerful, operation
For convenient, time saving and energy saving thermostat water bath, it can be achieved that automatic uniform adds water, increase pot cover height facilitates placement round center hole
Sub- pot cover, draining are convenient；And it is furnished with more specification rack for test tubes, effectively reduces the workload of experimenter, it is time saving and energy saving, reduce peace
Full hidden danger, it is convenient and practical.But the invention can not control external polymer reactor also without the setting water-bath circulatory system
Temperature operation, can only easily be operated in water-bath, cannot achieve the alternating temperature operation that multi-temperature zone is carried out to water-bath.
Summary of the invention
The object of the present invention is to provide olefin polymerization combined type method for controlling reaction temperature, can be simultaneously to differential responses
Multiple polymerization reactions of temperature carry out temperature control, improve efficiency, and save space；Present invention simultaneously provides the devices that it is used.
Olefin polymerization combined type method for controlling reaction temperature of the present invention, used device include constant temperature
Slot, thermostat successively connect into a circulation loop with overflow pipe, water supply tank, small pump, water supply pipe；The bottom of thermostat passes through
Outlet pipe connects circulating pump；The top of thermostat side is equipped with return pipe；It is equipped with temperature sensor, blender in thermostat and adds
Hot device；Circulating pump is equipped with more, and every circulating pump is connected with after-heater, and after-heater connects circulation pipe.
Control method the following steps are included:
(1) start blender, by setting the temperature of thermostat, heater begins to warm up, sets when thermostat temperature reaches
After determining temperature, heater is automatically stopped heating, and multiple polymerization reactions start to react；
(2) temperature control
Circulation pipe carries out temperature control to multiple polymerization reactions, and DCS system is required according to the temperature control of polymerization reaction, calculates each two
The heating power of secondary heater, heated recirculated water control polymerization reaction through circulation pipe, the recirculated water through heat exchange
Enter thermostat by return pipe；
(3) thermostat temperature controls
The measuring signal real-time display of temperature sensor is in DCS system in thermostat, when thermostat temperature is lower than constant temperature
When slot set temperature allows to fluctuate lower limit, heater starts automatically；Allow to fluctuate the upper limit when thermostat temperature is higher than set temperature
When, small pump starts automatically, and the water at low temperature in water supply tank enters thermostat, cools down to thermostat temperature；Constant temperature trough inner water
When position reaches overflow port, the recirculated water of super water level enters water supply tank through overflow pipe.
Device used in the olefin polymerization combined type method for controlling reaction temperature, including thermostat, thermostat
A circulation loop is successively connected into overflow pipe, water supply tank, small pump, water supply pipe, the temperature in water supply tank is room temperature, moisturizing
The starting time of pump is adjustable；The bottom of thermostat connects circulating pump by outlet pipe；The top of thermostat side is equipped with return pipe,
The recirculated water for completing heat exchange is back to thermostat through return pipe；Circulating pump is equipped with more, and every circulating pump is and reheating
Device is connected, and after-heater connects circulation pipe.
Wherein:
The power adjustable of circulating pump
Blender can as needed be adjusted revolving speed
The side of thermostat offers form, can observe the water level in thermostat, and top is equipped with detachable cover
Plate, thermostat is in air-tight state under normal circumstances, and trough inner water point will not evaporate, and avoids increasing humidity in operating space, this is right
It is extremely important for the operation that space humidity requires, it, can be to detachable cover plate when thermostat needs to overhaul.
Various types of signal in combined type reaction temperature control device is connect with control unit by DCS, to combined type temperature
It controls water-bath and carries out remote control operation.
Beneficial effects of the present invention are as follows:
The present invention is controlled by DCS, realizes reaction temperature automatic control, while secondary add is devised in circulation line
Hot device realizes single thermostat and controls the temperature that multiple and different temperature polymerizations react, saves space, improve efficiency；This hair
The bright temperature control that also can be realized multiple identical temperature polymerizations reactions；The present invention is closed-loop operation, not will increase operating space
Humidity.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 1, water supply tank；2, small pump；3, overflow pipe；4, thermostat；5, temperature sensor；6, blender；7, it heats
Device；8, return pipe；9, circulation pipe；10, outlet pipe；11, circulating pump；12, after-heater；13, heating tube；14, form；15,
Dismountable cover plate.
Specific embodiment
The present invention is described further with reference to embodiments.
Embodiment 1
Start blender 6, sets 4 temperature of thermostat as 70 DEG C, heater 7 is begun to warm up, and is set when 4 temperature of thermostat reaches
After determining temperature, heater 7 is automatically stopped heating, and polymerization reaction one and polymerization reaction two start to react；
Temperature control one: wherein a circulation pipe 9 is to one temperature control of polymerization reaction, and 11 power setting of circulating pump is 30%, DCS system
The heating power of calculating after-heater 12 is required according to one temperature control of polymerization reaction, heated recirculated water is through circulation pipe 9 to poly-
It closes reaction one to be controlled, the recirculated water through heat exchange enters thermostat 4 by return pipe 8；
Temperature control two: in addition a circulation pipe 9 is to two temperature control of polymerization reaction, and temperature control method is as described in above-mentioned temperature control one.
The control of thermostat temperature: the measuring signal real-time display of temperature sensor 5 works as perseverance in DCS system in thermostat 4
When warm 4 temperature of slot allows to fluctuate lower limit lower than 4 set temperature of thermostat, heater 7 starts automatically；When 4 temperature of thermostat is higher than
When set temperature allows to fluctuate the upper limit, small pump 2 starts automatically in water supply tank 1, and water at low temperature enters thermostat 4 in water supply tank 1, right
4 temperature of thermostat cools down；When water level reaches overflow port in thermostat 4, the recirculated water of super water level enters moisturizing through overflow pipe 3
Case 1.
Embodiment 2
Polymerization reaction one: 70 DEG C of temperature control
Polymerization reaction two: 70 DEG C of temperature control
Start blender 6, sets 4 temperature of thermostat as 70 DEG C, heater 7 is begun to warm up, and is set when 4 temperature of thermostat reaches
After determining temperature, heater 7 is automatically stopped heating, and polymerization reaction one and polymerization reaction two start to react；
Temperature control one: wherein a circulation pipe 9 is to one temperature control of polymerization reaction, and 11 power setting of circulating pump is 60%, DCS system
Setting after-heater 12 does not start, and recirculated water controls polymerization reaction one through circulation pipe 9, and the recirculated water through heat exchange is logical
It crosses return pipe 8 and enters thermostat 4；
Temperature control two: in addition a circulation pipe 9 is to two temperature control of polymerization reaction, and temperature control method is as described in above-mentioned temperature control one.
The control of thermostat temperature: the measuring signal real-time display of temperature sensor 5 works as perseverance in DCS system in thermostat 4
When warm 4 temperature of slot allows to fluctuate lower limit lower than 4 set temperature of thermostat, heater 7 starts automatically；When 4 temperature of thermostat is higher than
When set temperature allows to fluctuate the upper limit, small pump 2 starts automatically in water supply tank 1, and water at low temperature enters thermostat 4 in water supply tank 4, right
4 temperature of thermostat cools down；When water level reaches overflow port in thermostat 4, the recirculated water of super water level enters moisturizing through overflow pipe 3
Case 1.
Embodiment 3
Polymerization reaction one: 85 DEG C of temperature control
Polymerization reaction two: 70 DEG C of temperature control
Start blender 6, sets 4 temperature of thermostat as 70 DEG C, heater 7 is begun to warm up, and is set when 4 temperature of thermostat reaches
After determining temperature, heater 7 is automatically stopped heating, and polymerization reaction one and polymerization reaction two start to react；
Temperature control one: wherein a circulation pipe 9 is to one temperature control of polymerization reaction, and 11 power setting of circulating pump is 30%, DCS system
The heating power of calculating after-heater 12 is required according to one temperature control of polymerization reaction, heated recirculated water is right by circulation pipe 9
Polymerization reaction one is controlled, and the recirculated water through heat exchange enters thermostat 4 by return pipe 8；
Temperature control two: in addition a circulation pipe 9 is to two temperature control of polymerization reaction, and 11 power setting of circulating pump is 60%, DCS system
Setting after-heater 12 does not start, and recirculated water controls polymerization reaction two by circulation pipe 9, the recirculated water through heat exchange
Enter thermostat 4 by return pipe 8；
Thermostat temperature is controlled with embodiment 1.
Claims (5)
1. a kind of olefin polymerization combined type method for controlling reaction temperature, used device includes thermostat (4), thermostat
(4) circulation loop successively is connected into overflow pipe (3), water supply tank (1), small pump (2), water supply pipe；The bottom of thermostat (4)
Portion passes through outlet pipe (10) connection circulating pump (11)；The top of thermostat (4) side is equipped with return pipe (8)；It is set in thermostat (4)
There are temperature sensor (5), blender (6) and heater (7), it is characterised in that: circulating pump (11) is equipped with more, every circulating pump
(11) it is connected with after-heater (12), after-heater (12) connects circulation pipe (9)；
The control method the following steps are included:
(1) start blender (6), by setting the temperature of thermostat (4), heater (7) is begun to warm up, when in thermostat (4)
After temperature reaches set temperature, heater (7) is automatically stopped heating, and multiple polymerization reactions start to react；
(2) temperature control
Circulation pipe (9) carries out temperature control to multiple polymerization reactions, and DCS system is required according to the temperature control of polymerization reaction, calculates each two
The heating power of secondary heater (12), heated recirculated water controls polymerization reaction through circulation pipe (9), through heat exchange
Recirculated water enters thermostat (4) by return pipe (8)；
(3) thermostat temperature controls
The measuring signal real-time display of thermostat (4) interior temperature sensor (5) is in DCS system, and when thermostat (4), temperature is lower than
When thermostat (4) set temperature allows to fluctuate lower limit, heater (7) starts automatically；When thermostat (4) temperature is higher than set temperature
When allowing to fluctuate the upper limit, small pump (2) starts automatically, and the water at low temperature in water supply tank (1) enters thermostat (4), to thermostat (4)
Temperature cools down；When the interior water level of thermostat (4) reaches overflow port, the recirculated water of super water level enters water supply tank through overflow pipe (3)
(1)。
2. device used in a kind of olefin polymerization combined type method for controlling reaction temperature described in claim 1, including perseverance
Warm slot (4), thermostat (4) successively connect into one and are recycled back to overflow pipe (3), water supply tank (1), small pump (2), water supply pipe
Road；The bottom of thermostat (4) passes through outlet pipe (10) connection circulating pump (11)；The top of thermostat (4) side is equipped with return pipe
(8), it is characterised in that: circulating pump (11) is equipped with more, and every circulating pump (11) is connected with after-heater (12), secondary to add
Hot device (12) connects circulation pipe (9).
3. device used in olefin polymerization combined type method for controlling reaction temperature according to claim 2, feature
Be: the side of thermostat (4) offers form (14).
4. the apparatus of claim 2, it is characterised in that: the top of thermostat (4) is equipped with dismountable cover plate (15).
5. the apparatus of claim 2, it is characterised in that: be equipped with heating tube (13) in after-heater (12).
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| CN201610490022.XA CN107537413B (en) | 2016-06-29 | 2016-06-29 | Olefin polymerization combined type method for controlling reaction temperature and device |
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| CN201610490022.XA CN107537413B (en) | 2016-06-29 | 2016-06-29 | Olefin polymerization combined type method for controlling reaction temperature and device |
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| CN107537413A CN107537413A (en) | 2018-01-05 |
| CN107537413B true CN107537413B (en) | 2019-07-30 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657146A (en) * | 2004-12-30 | 2005-08-24 | 清华大学 | Material mixing system |
| CN203629026U (en) * | 2013-12-23 | 2014-06-04 | 新特能源股份有限公司 | Heat conduction oil electric heating and circulating device in cold hydrogenation |
| CN103933916A (en) * | 2014-04-04 | 2014-07-23 | 金发科技股份有限公司 | Heating-cooling method and heating-cooling system utilizing fused salt as carrier |
| CN204084857U (en) * | 2014-07-31 | 2015-01-07 | 广东万木新材料科技有限公司 | A kind of conduction oil temperature-controlling system |
| CN104667855A (en) * | 2015-01-20 | 2015-06-03 | 湖南省南岭化工集团有限责任公司 | Heat-conducting oil transport system for reaction kettle |
| CN204693821U (en) * | 2015-05-28 | 2015-10-07 | 常州市凯凯照明电器有限公司 | Heat carrier heating system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5793325B2 (en) * | 2011-03-30 | 2015-10-14 | 独立行政法人石油天然ガス・金属鉱物資源機構 | Temperature control system, hydrocarbon synthesis reactor, hydrocarbon synthesis reaction system |
-
2016
- 2016-06-29 CN CN201610490022.XA patent/CN107537413B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1657146A (en) * | 2004-12-30 | 2005-08-24 | 清华大学 | Material mixing system |
| CN203629026U (en) * | 2013-12-23 | 2014-06-04 | 新特能源股份有限公司 | Heat conduction oil electric heating and circulating device in cold hydrogenation |
| CN103933916A (en) * | 2014-04-04 | 2014-07-23 | 金发科技股份有限公司 | Heating-cooling method and heating-cooling system utilizing fused salt as carrier |
| CN204084857U (en) * | 2014-07-31 | 2015-01-07 | 广东万木新材料科技有限公司 | A kind of conduction oil temperature-controlling system |
| CN104667855A (en) * | 2015-01-20 | 2015-06-03 | 湖南省南岭化工集团有限责任公司 | Heat-conducting oil transport system for reaction kettle |
| CN204693821U (en) * | 2015-05-28 | 2015-10-07 | 常州市凯凯照明电器有限公司 | Heat carrier heating system |
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| CN107537413A (en) | 2018-01-05 |
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