CN206616174U

CN206616174U - A kind of system for being modified continuous polycondensation

Info

Publication number: CN206616174U
Application number: CN201720208595.9U
Authority: CN
Inventors: 王读彬; 刘强; 钱桂海; 季学广; 周俊; 郝瑞强; 杨兴宏
Original assignee: POLYTEX CHEMICAL ENGINEERING Co Ltd
Current assignee: POLYTEX CHEMICAL ENGINEERING Co Ltd
Priority date: 2017-03-06
Filing date: 2017-03-06
Publication date: 2017-11-07
Anticipated expiration: 2027-03-06

Abstract

The utility model is related to a kind of system for being modified continuous polycondensation, including the esterifying kettle being sequentially connected, class first reactor, class second reactor, class 3rd reactor, precondensation kettle, the class first reactor top connects catalyst by the pipeline that feeds and discharge respectively, Third monomer and mixed vapour house steward, the class second reactor top connects catalyst by the pipeline that feeds and discharge respectively, 4th monomer and mixed vapour house steward, the class 3rd reactor top connects catalyst by the pipeline that feeds and discharge respectively, antioxidant and mixed vapour house steward.The utility model is class three kettles technological process, and each kettle adds different auxiliary agents, and reaction temperature is controlled with pressure by gradient, it is adaptable to modified continuous polycondensation：The industrialized production of boiling dyeing at normal pressure type cation dyeable copolyester (ECDP).

Description

A kind of system for being modified continuous polycondensation

Technical field

The utility model belongs to modified poly ester application field, more particularly to a kind of system for being modified continuous polycondensation.

Background technology

Because polyester macromolecule marshalling is fine and close, with the higher degree of orientation, crystallinity and glass transition temperature, so its Hygroscopicity is poor, in addition, lack the active group that can be bonded with dyestuff on its strand, it is various in the presence of normal pressure carrier-free Dyestuff or the material of property are difficult to be diffused into PET molecules, and the preparation technology to dyeing or property polyester is brought Difficulty, therefore can only be dyed with disperse dyes in HTHP or have under conditions of carrier.Therefore in order to obtain high property The modified poly ester of energy, is directed to studying both at home and abroad " modification " of polyester fiber, successively occurs in that miscellaneous modification gathers always The method of ester, wherein chemical modification is a kind of more stable, lasting and effective method, and it includes copolymerization, blending, surface chemistry The methods such as reaction, and copolymerization process is one of important means in chemical modification, by copolymerization process, oneself is obtained modified at present Fiber includes disperse dye normal pressure dyeable polyester, anionic dye dyeable polyester (ADP) and cation dyeable polyester, polyester Fiber surface modification etc., and cationic-dyeable polyester fibers are more typically, it is with terephthalic acid (TPA) (PTA), second Glycol (EG) is primary raw material, and a certain amount of Third monomer, example are added in synthesis phase：Sulfonates, M-phthalic acid diformazan Ester -5- sodium sulfonates（SIPM）, the double hydroxyl ethyl ester -5- sodium sulfonates (SlPE) of M-phthalic acid, and the 4th monomer, example：Ester type polyacid, Ethanedioic acid, hexanedioic acid, are carried out made from copolyreaction, it can be divided into high-temp and-pressure cation dyeable copolyester (CDP) With two kinds of boiling dyeing at normal pressure type cation dyeable copolyester (ECDP).

A kind of continuous method for preparing modified poly ester, including bag are provided in Chinese patent document CN10101735430A Include following steps：PET and EG is added in esterifying kettle from charging aperture and carries out esterification, obtains ethylene glycol terephthalate low Polymers, afterwards oligomer melt be input to by pipeline in polycondensation vessel with three monomers or many monomers and additive polymerize it is anti- Should, react obtained modified poly ester melt and subsequently carry out pelletizing or direct fabrics, the two ends of the pipeline respectively with esterifying kettle and Polycondensation vessel is connected, when oligomer melt flows through the pipeline, and the ethylene glycol solution of three monomers or many monomers and additive is added Into pipeline, it is well mixed in the duct with oligomer melt, while the reaction in esterification later stage is carried out, subsequently into polycondensation vessel Carry out polymerisation.This method can only produce high-temp and-pressure cation dyeable copolyester (CDP), it is impossible to produce normal pressure boiling Dye type cation dyeable copolyester (ECDP), and catalyst and Third monomer point of addition on pipeline, it is impossible to substep Add and be sufficiently mixed uniformly, temperature can not grading control.

The content of the invention

The utility model aims to solve the problem that drawbacks described above there is provided the class three kettles technological process of one kind, and each kettle addition is not Same auxiliary agent, reaction temperature is controlled with pressure by gradient, it is adaptable to modified continuous polycondensation：The boiling dyeing at normal pressure type dye of positive ion The industrialized production of dyeable copolyester (ECDP).

In order to overcome defect present in background technology, the utility model solves the technical scheme that its technical problem is used It is：A kind of system for being modified continuous polycondensation, including the esterifying kettle, class first anti-that bottom is sequentially connected by pipeline Answer kettle, class second reactor, class 3rd reactor and precondensation kettle, it is class first reactor, class Charging aperture and discharge nozzle, and class first reactor, class are equipped with second reactor, class 3rd reactor Two reactors, class 3rd reactor are jacket structured.

In a preferred embodiment of the present utility model, class first reactor top is connected by charging aperture respectively Catalyst and Third monomer, the class second reactor top connect catalyst and the 4th monomer by charging aperture respectively, The class 3rd reactor top connects catalyst and antioxidant by feeding hole pipeline respectively, and described class first is anti- The top of kettle, class second reactor, class 3rd reactor is answered also to connect mixed vapour house steward by the pipeline that discharges.

In a preferred embodiment of the present utility model, class first reactor, class second reactor, diester The top end for changing the 3rd reactor is equipped with deeply to its internal agitator.

The beneficial effects of the utility model are：The utility model is class three kettles technological process, and each kettle addition is different Auxiliary agent, reaction temperature is controlled with pressure by gradient, it is adaptable to modified continuous polycondensation：The boiling dyeing at normal pressure type dye of positive ion can The industrialized production of dying copolyester (ECDP).

Brief description of the drawings

The utility model is further illustrated with reference to the accompanying drawings and examples.

Fig. 1 is structural representation of the present utility model.

Embodiment

Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite Define.

A kind of system for being modified continuous polycondensation as shown in Figure 1, including the esterification that bottom is sequentially connected by pipeline Kettle 1, class first reactor 2, class second reactor 3, class 3rd reactor 4 and precondensation kettle 5, class One reactor 2, class second reactor 3, it is equipped with charging aperture and discharge nozzle on class 3rd reactor 4, and it is class First reactor 2, class second reactor 3, class 3rd reactor 4 are jacket structured.Class first reactor 2 Top connects catalyst and Third monomer by charging aperture respectively, and Third monomer is Sulfonates, for example：M-phthalic acid diformazan Ester -5- sodium sulfonates（SIPM）, the double hydroxyl ethyl ester -5- sodium sulfonates (SlPE) of M-phthalic acid；Class second reactor top difference Catalyst and the 4th monomer are connected by charging aperture, the 4th monomer is ester type polyacid, for example：Ethanedioic acid, hexanedioic acid；It is class 3rd reactor top connects catalyst and antioxidant by feeding hole pipeline respectively, it is above-mentioned in catalyst be antimony class, example Such as：Antimony oxide or antimony glycol；Antioxidant is mainly compound of the hindered phenol with phosphite ester, for example：Double (3,5- bis- Tertiary butyl-4-hydroxy benzyl monoethyl phosphate) calcium salt, class first reactor, class second reactor, the class 3rd The top of reactor also connects mixed vapour house steward by the pipeline that discharges.

Class first reactor 2, class second reactor 3, the top end of class 3rd reactor 4 are equipped with depth Enter to its internal agitator 6, be easy to be sufficiently mixed uniformly, to ensure stepwise reaction efficiency.

The oligoterephthalic acid glycol ester of one esterifying kettle 1, enters from the class bottom of first reactor 2, then The catalyst and Third monomer entered with the class top of first reactor 2, in the abundant of the class agitator of first reactor 2 Enter reaction under immixture, control pressure is at 30-20kpa (A), and control temperature is at 208-212 DEG C, class first reactor 2 gas phases produced enter mixed vapour house steward through its top, and the class reacting rear material of first reactor 2 is anti-from class second The bottom of kettle 3 is answered to enter, then the catalyst and the 4th monomer entered with the class top of second reactor 3, it is anti-class second Being sufficiently mixed under effect for the agitator of kettle 3 is answered to enter reaction, control pressure is at 20-10kpa (A), and control temperature is in 220-224 DEG C, the gas phase that class second reactor 3 is produced enters mixed vapour house steward through its top, and class second reactor 3 reacts Material enters from the class bottom of 3rd reactor 4 afterwards, then the catalyst and antioxygen entered with the class top of 3rd reactor 4 Agent, enters reaction, control pressure is at 10-5kpa (A), control in being sufficiently mixed under effect for the class agitator of 3rd reactor 4 Temperature processed is at 253-257 DEG C, and the class the gas phase produced in reactor 4 is class through entering mixed vapour house steward at the top of it The reacting rear material of 3rd reactor 4 enters precondensation kettle 5 and further reacted, then through whole polycondensation vessel（Not in this patent scope）Continue Polymerization, final production is for modified poly ester：Boiling dyeing at normal pressure type cation dyeable copolyester (ECDP).

Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in Other related technical fields, are similarly included in scope of patent protection of the present utility model.

Claims

1. a kind of system for being modified continuous polycondensation, it is characterised in that：The esterification being sequentially connected including bottom by pipeline Kettle, class first reactor, class second reactor, class 3rd reactor and precondensation kettle, described class One reactor, class second reactor, it is equipped with charging aperture and discharge nozzle, and class first on class 3rd reactor Reactor, class second reactor, class 3rd reactor are jacket structured.

2. it is used for the system for being modified continuous polycondensation according to claim 1, it is characterised in that：Class first reactor Top connects catalyst and Third monomer by charging aperture respectively, and the class second reactor top passes through charging aperture respectively Catalyst and the 4th monomer are connected, the class 3rd reactor top connects catalyst and anti-by feeding hole pipeline respectively Oxygen agent, class first reactor, class second reactor, the top of class 3rd reactor also pass through discharging Pipeline connects mixed vapour house steward.

3. it is used for the system for being modified continuous polycondensation according to claim 1, it is characterised in that：Class first reaction Kettle, class second reactor, the top end of class 3rd reactor are equipped with deeply to its internal agitator.