CN104262598B - The method that polyester is changed the line of production online - Google Patents
The method that polyester is changed the line of production online Download PDFInfo
- Publication number
- CN104262598B CN104262598B CN201410542068.2A CN201410542068A CN104262598B CN 104262598 B CN104262598 B CN 104262598B CN 201410542068 A CN201410542068 A CN 201410542068A CN 104262598 B CN104262598 B CN 104262598B
- Authority
- CN
- China
- Prior art keywords
- additive
- line
- slurry
- production
- tank
- 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.)
- Active
Links
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention relates to a kind of polyester to change the line of production online equipment and the method that utilizes this equipment to carry out changing the line of production, the present invention is provided with and is specifically designed to the equipment that polyester is changed the line of production online, and in this equipment, the setting of additive slurry commanding tank is easy to be pre-configured with according to instruction of changing the line of production the additive slurry of needs before opening of device of changing the line of production；Further, owing to being pre-configured with additive slurry, without provisional configuration in polymerization slurry commanding tank, therefore, it can make the liquid level of polymerization slurry commanding tank drop to very low, even below 1%, thus the flow volume decreased to greatest extent in slurry, and then reduce the generation amount of Transition Materials in process of changing the line of production；The slurry being pre-configured with in additive slurry commanding tank can quickly regulate the concentration of additive in esterifying kettle, thus while ensureing that normal table produces, reaching the purpose that quick realization is changed the line of production online, reduces the transit time changed the line of production online；The method technology controlling and process of the present invention is simple, be easily achieved industrialization。
Description
Technical field
The present invention relates to polyester to change the line of production online technical field, refer specifically to a kind of polyester and change the line of production online equipment and the method that utilizes this equipment to carry out changing the line of production。
Background technology
Along with being growing more intense of production of polyester producer competition, polyester product just develops towards multi items direction, in order to meet the market demand, it is desirable to PET manufacturer changes the line of production frequently。For PET device, two ways of having changed the line of production: is first stop production, and purging system is changed the line of production again；Two is change the line of production online。The former cost is high, it is necessary to time long, variable amount of start-stop car material can be produced because of the difference of operation level；The latter is absent from stopping production, and the production switch time is short, and market reaction is rapider, is conducive to increasing the motility produced, increases economic efficiency。But the amount of the Transition Materials of middle generation of changing the line of production online is not easily estimated。
Change the line of production online and increase additive and reduce the process of additive, the generation of this prolongation that directly results in transit time and Transition Materials。Traditional PET produces equipment and includes polymerization slurry commanding tank, esterifying kettle, three assemblies of polycondensation vessel; wherein; polymerization slurry commanding tank and esterifying kettle are continuous stir reactors; with slurry stable for ensureing; the protection agitator not loss under centrifugal action because slurry liquid level is too low; the general polymerization slurry commanding tank liquid level that first reduces is to about 50%, and then passing through dosing pump increases or reduce additive level。In above process, owing to polymerization slurry commanding tank is continuous stir reactor, in polymerization slurry commanding tank, remaining slurry is more, in polymerization slurry commanding tank and esterifying kettle, additive level increases or is reduced to setting value needs considerable time, therefore additive level is continually changing in process and just creates Transition Materials, for the polyester equipment of present single line production capacity 25～500,000 tons/year, once change the line of production and will produce 400～600 tons of Transition Materials。Changing the line of production online in process, the generation of Transition Materials has had a strong impact on the economic benefit of enterprise。
Therefore, for equipment of changing the line of production online and the technique of current polyester, need to improve。
Summary of the invention
First to be solved by this invention technical problem is that the present situation for prior art, it is provided that a kind of polyester is changed the line of production equipment online, and this equipment can effectively shorten transit time for changing the line of production online of polyester, reduce the generation of Transition Materials。
Second to be solved by this invention technical problem is that the present situation for prior art, it is provided that a kind of utilize the above-mentioned polyester equipment of changing the line of production online to carry out the method changed the line of production, and the method technology controlling and process is simple, be easily achieved industrialization。
This invention address that the technical scheme that above-mentioned first technical problem adopts is: a kind of polyester is changed the line of production equipment online, it is characterised in that include
Additive slurry commanding tank, charging aperture and an additive feed pot connect and have the first agitator, and discharging opening has the first weighing balance；
Phthalic acid feed pot, discharging opening has the second weighing balance；
Additive batch tank, has the second agitator；
Polycondensation vessel, has discharge port and the 3rd agitator；
Esterifying kettle, discharge end is connected with the charging aperture of aforesaid polycondensation vessel and has the 4th agitator；And
Polymerization slurry commanding tank, there is the 5th agitator, the charging aperture of this polymerization slurry commanding tank is connected with the discharging opening of aforementioned additive slurry commanding tank, the discharging opening of phthalic acid feed pot and the discharging opening of additive batch tank respectively, and the discharging opening of this polymerization slurry commanding tank is connected with the charging aperture of aforementioned esterifying kettle。
As improvement, the discharging opening of described additive slurry commanding tank, the discharging opening of phthalic acid feed pot and the discharging opening of additive batch tank are connected respectively through the charging aperture of mozzle with polymerization slurry commanding tank, and described mozzle is provided with outlet valve。
As preferably, the volume of described additive slurry commanding tank is the 10%～100% of polymerization slurry commanding tank volume。
This invention address that the technical scheme that above-mentioned second technical problem adopts is: a kind of method utilizing the above-mentioned polyester equipment of changing the line of production online to carry out changing the line of production, it is characterised in that comprise the following steps:
(1) equipment of changing the line of production online runs in front 1h～10h, is added to by desired additives in additive feed pot, tentatively enters stirring in additive slurry commanding tank after mixing extremely uniform；
(2) change the line of production online opening of device, reduce polymerization slurry commanding tank liquid level to being not more than the 30% of tank body volume, in 10min～45min, the slurry configured in described for step (1) additive slurry commanding tank is delivered to polymerization slurry commanding tank, simultaneously, in polymerization slurry commanding tank, corresponding phthalic acid and ethylene glycol is supplemented respectively through phthalic acid feed pot and additive batch tank, phthalic acid and the addition of ethylene glycol with change the line of production before keep consistent, carry out with slurry；
(3), after the concentration of slurry all reaches to set concentration in slurry commanding tank to be polymerized and esterifying kettle, continue with slurry according to this setting concentration, changed the line of production。
In such scheme, the additive described in step (1) is at least one in functional additive, catalyst, toner and heat stabilizer。
As preferably, the additive described in step (1) accounts for the 30%～90% of additive slurry commanding tank volume。
Be polymerized in slurry commanding tank and esterifying kettle the concentration of slurry described in step (3) reaches to set concentration in 5h～10h。
Compared with prior art, it is an advantage of the current invention that: change the line of production process transitions time length and be easily generated the feature of a large amount of Transition Materials for polyester, being provided with and be specifically designed to the equipment that polyester is changed the line of production online, in this equipment, the setting of additive slurry commanding tank is easy to be pre-configured with according to instruction of changing the line of production the additive slurry of needs before opening of device of changing the line of production；Further, owing to being pre-configured with additive slurry, without provisional configuration in polymerization slurry commanding tank, therefore, it can make the liquid level of polymerization slurry commanding tank drop to very low, even below 1%, thus the volume of material decreased to greatest extent in slurry, and then reduce the generation amount of Transition Materials in process of changing the line of production；The slurry being pre-configured with in additive slurry commanding tank can quickly regulate the concentration of additive in esterifying kettle, avoid causing length and produce the problem that Transition Materials is many transit time because of the fluctuation of concentration of additive slurry, while ensureing that normal table produces, reach the purpose that quick realization is changed the line of production online, reduce the transit time changed the line of production online；The product change method technology controlling and process of the present invention is simple, be easily achieved industrialization。
Accompanying drawing explanation
Fig. 1 is the structural representation of equipment of changing the line of production online in the embodiment of the present invention 1。
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail。The process of changing the line of production all is described as functional additive by following embodiment using M-phthalic acid。
Embodiment 1:
As shown in Figure 1, the equipment of changing the line of production online of the present embodiment includes additive slurry commanding tank 1, phthalic acid feed pot 2, additive batch tank 3, polymerization slurry commanding tank 4, esterifying kettle 5 and polycondensation vessel 6, and the volume of additive slurry commanding tank 1 is the 10%～100% of polymerization slurry commanding tank 4 volume。The charging aperture of additive slurry commanding tank 1 and an additive feed pot 11 connect and have the first agitator 12, and discharging opening has the first weighing balance 13；The discharging opening of phthalic acid feed pot 2 has the second weighing balance 21, there is in additive batch tank 3 second agitator 31, polycondensation vessel 6 has discharge port 61 and the 3rd agitator 62, the discharge end of esterifying kettle 5 is connected with the charging aperture of polycondensation vessel 6 and has the 4th agitator 51, in polymerization slurry commanding tank 4, there is the 5th agitator 41, and the charging aperture of polymerization slurry commanding tank 4 is connected with the discharging opening of additive slurry commanding tank 1, the discharging opening of phthalic acid feed pot 2 and the discharging opening of additive batch tank 3 respectively, the discharging opening of polymerization slurry commanding tank 4 is connected with the charging aperture of esterifying kettle 5。The discharging opening of additive slurry commanding tank 4, the discharging opening of phthalic acid feed pot 2 and the discharging opening of additive batch tank 3 are connected respectively through the charging aperture of mozzle 100 with polymerization slurry commanding tank 4, and mozzle 100 is provided with outlet valve。
Using above-mentioned equipment of changing the line of production online to M-phthalic acid content process of changing the line of production from low to high, the online product change method of the present embodiment comprises the following steps:
(1), before changing the line of production in 1h, 10 tons of mixed slurries are configured by additive feed pot 11 and additive slurry commanding tank 1, by mass, M-phthalic acid in this mixed slurry: p-phthalic acid=3:7, stirs 1h；
(2) change the line of production opening of device, reduce polymerization slurry commanding tank 4 liquid level to the 1% of tank body volume, the mixed slurry configured in step (1) is delivered in 30min in polymerization slurry commanding tank 4, simultaneously, before polymerization slurry commanding tank 4 supplementing the addition of p-phthalic acid and ethylene glycol, p-phthalic acid and ethylene glycol and changes the line of production, keep consistent respectively through phthalic acid feed pot 2 and additive batch tank 3；
(3) 6h post polymerization slurry commanding tank 4, M-phthalic acid concentration all arrives setting concentration in esterifying kettle 5, continue with slurry according to the concentration of this setting M-phthalic acid, changed the line of production。
Embodiment 2:
Using the equipment of changing the line of production online of embodiment 1 to M-phthalic acid content process of changing the line of production from high to low, the online product change method of the present embodiment comprises the following steps:
(1), before changing the line of production in 3h, 10 tons of mixed slurries are configured by additive feed pot 11 and additive slurry commanding tank 1, by mass, M-phthalic acid in this mixed slurry: p-phthalic acid=6:4, stirs 5h；
(2) change the line of production opening of device, reduce polymerization slurry commanding tank 4 liquid level to the 5% of tank body volume, the mixed slurry configured in step (1) is delivered in 10min in polymerization slurry commanding tank 4, simultaneously, before polymerization slurry commanding tank 4 supplementing the addition of p-phthalic acid and ethylene glycol, p-phthalic acid and ethylene glycol and changes the line of production, keep consistent respectively through phthalic acid feed pot 2 and additive batch tank 3；
(3) 5h post polymerization slurry commanding tank 4, M-phthalic acid concentration all arrives setting concentration in esterifying kettle 5, continue with slurry according to the concentration of this setting M-phthalic acid, changed the line of production。
Embodiment 3:
Using the equipment of changing the line of production online of embodiment 1 to M-phthalic acid content process of changing the line of production from low to high, the online product change method of the present embodiment comprises the following steps:
(1), before changing the line of production in 8h, 18 tons of mixed slurries are configured by additive feed pot 11 and additive slurry commanding tank 1, by mass, M-phthalic acid in this mixed slurry: p-phthalic acid=2:8, stirs 10h；
(2) change the line of production opening of device, reduce polymerization slurry commanding tank 4 liquid level to the 10% of tank body volume, the mixed slurry configured in step (1) is delivered in 45min in polymerization slurry commanding tank 4, simultaneously, before polymerization slurry commanding tank 4 supplementing the addition of p-phthalic acid and ethylene glycol, p-phthalic acid and ethylene glycol and changes the line of production, keep consistent respectively through phthalic acid feed pot 2 and additive batch tank 3；
(3) 8h post polymerization slurry commanding tank 4, M-phthalic acid concentration all arrives setting concentration in esterifying kettle 5, continue with slurry according to the concentration of this setting M-phthalic acid, changed the line of production。
Embodiment 4:
Using the equipment of changing the line of production online of embodiment 1 to M-phthalic acid content process of changing the line of production from high to low, the online product change method of the present embodiment comprises the following steps:
(1), before changing the line of production, 30 tons of mixed slurries are configured by additive feed pot 11 and additive slurry commanding tank 1, by mass, M-phthalic acid in this mixed slurry: p-phthalic acid=7:3, stirs 10h；
(2) change the line of production opening of device, reduce polymerization slurry commanding tank 4 liquid level to the 30% of tank body volume, the mixed slurry configured in step (1) is delivered in 25min in polymerization slurry commanding tank 4, simultaneously, before polymerization slurry commanding tank 4 supplementing the addition of p-phthalic acid and ethylene glycol, p-phthalic acid and ethylene glycol and changes the line of production, keep consistent respectively through phthalic acid feed pot 2 and additive batch tank 3；
(3) 10h post polymerization slurry commanding tank 4, M-phthalic acid concentration all arrives setting concentration in esterifying kettle 5, continue with slurry according to the concentration of this setting M-phthalic acid, changed the line of production。
Claims (6)
1. the method that a polyester is changed the line of production online, it is characterised in that comprise the following steps:
(1) equipment of changing the line of production online runs in front 1h～10h, is added to by desired additives in additive feed pot, tentatively enters stirring in additive slurry commanding tank after mixing extremely uniform；
(2) change the line of production online opening of device, reduce polymerization slurry commanding tank liquid level to being not more than the 30% of tank body volume, in 10min～45min, the slurry configured in described for step (1) additive slurry commanding tank is delivered to polymerization slurry commanding tank, simultaneously, in polymerization slurry commanding tank, corresponding phthalic acid and ethylene glycol is supplemented respectively through phthalic acid feed pot and additive batch tank, phthalic acid and the addition of ethylene glycol with change the line of production before keep consistent, carry out with slurry；
(3), after the concentration of slurry all reaches to set concentration in slurry commanding tank to be polymerized and esterifying kettle, continue with slurry according to this setting concentration, changed the line of production；
The described equipment of changing the line of production online includes
Additive slurry commanding tank, charging aperture and an additive feed pot connect and have the first agitator, and discharging opening has the first weighing balance；
Phthalic acid feed pot, discharging opening has the second weighing balance；
Additive batch tank, has the second agitator；
Polycondensation vessel, has discharge port and the 3rd agitator；
Esterifying kettle, discharge end is connected with the charging aperture of aforesaid polycondensation vessel and has the 4th agitator；And
Polymerization slurry commanding tank, there is the 5th agitator, the charging aperture of this polymerization slurry commanding tank is connected with the discharging opening of aforementioned additive slurry commanding tank, the discharging opening of phthalic acid feed pot and the discharging opening of additive batch tank respectively, and the discharging opening of this polymerization slurry commanding tank is connected with the charging aperture of aforementioned esterifying kettle。
2. method according to claim 1, it is characterized in that: the discharging opening of described additive slurry commanding tank, the discharging opening of phthalic acid feed pot and the discharging opening of additive batch tank are connected respectively through the charging aperture of mozzle with polymerization slurry commanding tank, and described mozzle is provided with outlet valve。
3. method according to claim 2, it is characterised in that: the volume of described additive slurry commanding tank is the 10%～100% of polymerization slurry commanding tank volume。
4. method according to claim 1, it is characterised in that: the additive described in step (1) is at least one in catalyst, toner and heat stabilizer。
5. the method according to claim 1 or 4, it is characterised in that: the additive described in step (1) accounts for the 30%～90% of additive slurry commanding tank volume。
6. the method according to claim 1 or 4, it is characterised in that: be polymerized in slurry commanding tank and esterifying kettle the concentration of slurry described in step (3) reaches to set concentration in 5h～10h。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542068.2A CN104262598B (en) | 2014-10-14 | 2014-10-14 | The method that polyester is changed the line of production online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542068.2A CN104262598B (en) | 2014-10-14 | 2014-10-14 | The method that polyester is changed the line of production online |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104262598A CN104262598A (en) | 2015-01-07 |
| CN104262598B true CN104262598B (en) | 2016-06-22 |
Family
ID=52154201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410542068.2A Active CN104262598B (en) | 2014-10-14 | 2014-10-14 | The method that polyester is changed the line of production online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104262598B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672440B (en) * | 2015-03-05 | 2016-08-17 | 浙江万凯新材料有限公司 | Individually esterification co-polyester production combination unit |
| CN108299634B (en) * | 2018-01-27 | 2020-02-04 | 安阳龙宇投资管理有限公司 | Production system and production method of multi-type polyester intermediates |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190784B (en) * | 2011-04-01 | 2012-11-14 | 浙江万凯新材料有限公司 | Production equipment for PET (poly(ethylene terephthalate)) chip |
| CN102691131A (en) * | 2012-06-19 | 2012-09-26 | 福建经纬新纤科技实业有限公司 | Manufacturing equipment system of flame-retardant polyester fiber |
-
2014
- 2014-10-14 CN CN201410542068.2A patent/CN104262598B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104262598A (en) | 2015-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2014004496A (en) | Production method of reactive agglomerated particle, production method of cathode active substance for lithium-ion battery, production method of lithium-ion battery, and production apparatus of reactive agglomerated particle | |
| CN104262598B (en) | The method that polyester is changed the line of production online | |
| CN107090606A (en) | A kind of method for producing multifunctional different polyester fiber | |
| CN104862791A (en) | Homogenizing feeding device for ultra-high molecular weight polyethylene dry spinning production | |
| CN110194832A (en) | Green functional polyisocyanate Speciality Pet Fiber flexible process and device | |
| CN204275859U (en) | Concrete additive solution automatic matching device | |
| CN208877953U (en) | Maleic anhydride unit solvent washing system, cis-butenedioic anhydride generating device | |
| CN108273452B (en) | Grease epoxidation reactor | |
| CN204261377U (en) | A kind of liquid-liquid extractor continuously | |
| CN204522939U (en) | A kind of concrete additive processing unit (plant) | |
| CN204746157U (en) | Agitator | |
| CN204841602U (en) | Device is added to catalyst in petroleum resin production technology | |
| CN204275982U (en) | A kind of liquid detergent preparation facilities | |
| CN202460619U (en) | Water-based emulsion polymerization device | |
| CN203346316U (en) | Polyvinyl alcohol producing system | |
| CN102826991B (en) | Process and device for continuous acidification of acidification section in production of sebacic acid | |
| CN201880530U (en) | Chemical treatment equipment | |
| CN202893261U (en) | Alkali water tank | |
| CN204365189U (en) | A kind of cable sheath granulating raw material stirs feed arrangement | |
| CN202849510U (en) | Rare earth oxalate sedimentation device | |
| CN221182790U (en) | Automatic proportioning and feeding system for nanocrystal core type liquid accelerator | |
| CN204019775U (en) | A kind of polystyrene proportioner | |
| CN218621081U (en) | Electrolytic copper foil additive device | |
| CN203916647U (en) | Reactor | |
| CN204710251U (en) | A kind of automobile sealant preparation mixing kettle loop back materials device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 314415 Zhejiang province Haining city Jianshan District Road No. 15 Wen Patentee after: Wankai new materials Co., Ltd Address before: 314415 Zhejiang province Haining city Jianshan District Road No. 15 Wen Patentee before: ZHEJIANG WANKAI NEW MATERIALS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |