CN201669096U

CN201669096U - Polymerization reactor with novel structure

Info

Publication number: CN201669096U
Application number: CN2010201815793U
Authority: CN
Inventors: 张贤安; 梁爱民; 王健良; 王健; 李洪泊; 胡兴苗; 孟伟娟; 李军杰
Original assignee: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
Current assignee: ZHENHAI PETROCHEMICAL JIANAN ENGINEERING Co Ltd
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-12-15
Anticipated expiration: 2020-04-30

Abstract

The utility model relates to a polymerization reactor with a novel structure. The polymerization reactor comprises a cylinder provided with a heat exchanging medium outlet and a heat exchanging medium inlet, wherein a first tube plate, a second tube plate and a core between the first and second tube plates are arranged inside the cylinder; the two sides of the core are supported on the first and second tube plates and designed into an orifice structure respectively; through holes are formed on the side walls of the orifices; a plurality of spiral tubes which are nested internally and externally and formed by winding hollow tubes are sleeved outside the core; the rotating directions of the hollow tubes of the spiral tubes adjacent internally and externally are opposite; one end of each hollow tube of each spiral tube passes through the first tube plate to be communicated with the heat exchanging medium outlet, while the other end passes through the second tube plate to be communicated with the heat exchanging medium inlet; the internal end of a first adapter tube is communicated with the orifice at one end of the core to make the external end form a material inlet end; and the internal end of a second adapter tube is communicated with the orifice at the other end of the core to make the external end form a material outlet end. The polymerization reactor of the utility model has the advantages of low energy consumption, full and uniform heat exchange and capability of preventing materials from being backmixed in a flowing direction and realizing temperature region segmentation.

Description

A kind of polymer reactor of new structure

Technical field

The utility model relates to the polymer reactor that a kind of chemical industry is used, the polymer reactor of the particularly a kind of polymerisation that is applicable to various high molecular polymers, especially solution polymerization and bulk polymerization.

Background technology

Polymer reactor can be divided into suspension polymerisation (containing slurry polymerization) reactor, emulsion polymerization device, solution polymerization reactor and polymerisation in bulk (containing polycondensation) reactor by polymerization.And press the structural shape of polymer reactor, then be divided into stirred-tank reactor, tubular type or tower reactor and fluidized-bed reactor again.The different structure type of polymer reactor and different polymerisation process are determining whole group of characteristic of polymer reactor, and the polymerization production in the chemical industry in final decision.

Current, suspension polymerization device, emulsion polymerization device, solution polymerization reactor and bulk polymerization device mostly adopt stirred-tank reactor, are structure " a kind of polymer reactor of producing suspension type polyvinyl-chloride " of CN100341905C and " a kind of novel polymer reactor " that the Chinese patent notification number is CN2865843Y have all disclosed as the Chinese patent notification number.Stirred-tank reactor generally is furnished with powerful agitator, to guarantee that material to various viscosity can both provide fully, mixing uniformly, also just because of this, it can handle the material of certain viscosity.But this polymer reactor is being deposited in following deficiency: power consumption is bigger; Centre material and edge material flow differ, and each particle reaction time of material differs; It is uneven to remove heat in the polymerization process, and center and edge differ greatly; The polymerisation heating is not smooth with cooling, also has certain back-mixing defective simultaneously.

In addition, be the wherein a kind of structure that discloses tubular reactor in " tubular polymerization reactor and use its polymerization " of CN1787876 as the Chinese patent publication number; The Chinese patent notification number be CN2607192's " fluidized-bed polymerization reactor " structure of fluidized-bed reactor has then been described.Though these polymer reactors can satisfy the requirement of polymerisation to a certain extent.But still exist various problems, as, static mixing effect with remove heat, add that thermal effect fails fully to combine, material inequality, the sticking wall of polymer stop up or the like,

Simultaneously, present polymer reactor all can't be realized cutting apart of temperature province.

The utility model content

Technical problem to be solved in the utility model is at above-mentioned prior art present situation, provide that a kind of energy consumption is little, heat exchange fully, evenly, and can avoid material back-mixing and can realize the polymer reactor of the new structure that temperature province is cut apart on flow direction.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the polymer reactor of this new structure comprises that an end is provided with the heat transferring medium outlet, the other end is provided with the cylindrical shell of heat transferring medium inlet, it is characterized in that: first tube sheet is installed in the described cylindrical shell, second tube sheet and the core body between first tube sheet and second tube sheet, the two ends of this core body are supported on respectively on aforesaid first tube sheet and second tube sheet, and the two ends of this core body are designed to nozzle structure respectively, on the sidewall of the described mouth of pipe, have through hole, this core body then is with the helix tube that forms with the hollow tube coiling that is nested with inside and outside a plurality of outward, the hollow tube direction of rotation of inside and outside adjacent helix tube is opposite, one end of the hollow tube of each helix tube is connected with described heat transferring medium outlet after passing through first tube sheet, and the other end of the hollow tube of each helix tube is connected with described heat transferring medium inlet after passing through described second tube sheet; Simultaneously, first is connected with an end mouth of pipe of described core body after taking over the inner wall that passes above-mentioned cylindrical shell, and this first outer end of taking over becomes the material inlet end; Second the inner of taking over is connected with the other end mouth of pipe of described core body after also passing the wall of described cylindrical shell, and this second outer end of taking over becomes the material outlet end.

In such scheme, described helix tube can be designed to 2～10 by specification requirement, and such structure not only can satisfy the requirement of different polymerisations, and overall structure is simpler relatively, easy to assembly, and cost is also low.

Described through hole can be designed to various forms of structures, can be axial long hole, also can be designed to along the slotted hole of circumferential distribution, to satisfy passing through smoothly of polymer material.

Described each helix tube can form with single hollow tube coiling.But have more heat transferring medium to pass through in the identical time period in order to satisfy, the hollow tube in each helix tube can design a plurality of, arranges in the same way successively and turns to described helix tube, to satisfy the heat exchange needs of polymerisation.

Each hollow tube both ends in described each helix tube are designed to flat segments respectively, and the flat segments of the hollow tube of each helix tube is made and assembling with convenient along circumferentially evenly distributed.

Compared with prior art, advantage of the present utility model is: (1) does not promptly have mechanical transmission owing to do not adopt any tumbler in the utility model production process, thereby energy resource consumption is low, need not maintenance of machine and change parts in the future.(2) (heat or remove thermal medium) reverse in the hollow tube of each helix tube (opposite with the polymer material direction that flows) flowed because heat transferring medium of the present utility model, this heat exchange mode heat transfer efficiency height, make the polymer material cooling or the rate of heat addition even, and this heat exchange all the time can be synchronous with polymerisation, no matter heat or remove heat, polymerisation all can be controlled in the suitable temperature, just can effectively control polymerisation.(3) because the utility model is to flow between internal and external screw shape pipe at the polymer material between two tube sheets, the structure of the hollow tube of adjacent different rotation directions can be guaranteed abundant, the evenly mixing of polymer material of various viscosity inside and outside this, good mixing effect can effectively improve the polymerizate quality; And the hybrid mode of this static state, can make the utility model polymer material on flow direction, not have back-mixing fully, and on plane, reach maximum mixing perpendicular to flow direction, and show as laminar flow, can facilitate the limited holdup time to distribute and molecular weight distribution.(4) by adopting the helix tube that is nested with inside and outside a plurality of, conversion zone can be divided into several different temperature provinces, making adjustment in the reactor is that specific reaction is required, and making the flexibility of operation and improving the quality of products becomes possibility.(5) polymer material of the present utility model also has identical characteristics of each particle time of staying of polymer material when mobile, to improve polymer quality uniformity and stability.

The utility model can manufacture and design according to different demands in a word, on the suitability for industrialized production that is applied in multiple polymers.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 be among Fig. 1 A to structural representation;

Fig. 3 be among Fig. 1 B-B to cutaway view;

Fig. 4 is the sectional perspective structural representation (helix tube is three among this figure) of helix tube among Fig. 1 and core body;

Fig. 5 is the three-dimensional exploded view of Fig. 4.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

As shown in Figure 1 to Figure 3, this polymer reactor comprises that an end is provided with heat transferring medium outlet 15, the other end is provided with the cylindrical shell 1 of heat transferring medium inlet 14 and is installed in cylindrical shell interior first tube sheet 2, second tube sheet 3, core body 4 and a plurality of helix tube 5, wherein, cylindrical shell 1 includes tubular shell 11, tubular shell lies in a horizontal plane on two saddles 8, the left and right end of tubular shell 11 is fixed with described first tube sheet 2 and second tube sheet 3 respectively, so that form a sealing middle chamber a between this tubular shell 11 and first tube sheet 2, second tube sheet 3.The outside of first tube sheet 2, second tube sheet 3 is connected with short cylinder 13 and flat head 12 respectively, first tube sheet and between the short cylinder 13, flat head 12 in its outside, converge into a b of left chamber, second tube sheet and between the short cylinder 13 in its outside, flat head 12, converge into a right chamber c.Above-mentioned heat transferring medium outlet 15 is positioned on the sidewall of the b of left chamber.And above-mentioned heat transferring medium inlet 14 is positioned on the sidewall of right chamber c.

Above-mentioned core body 4 is between first tube sheet 2 and second tube sheet 3, be in the middle chamber a, the two ends of this core body 4 are fixedly attached to respectively on first tube sheet and second tube sheet, and the two ends of this core body are designed to nozzle structure respectively, on the sidewall of this core body two ends mouth of pipe, have through hole 41, in the present embodiment, through hole 41 is designed to along the slotted hole of circumferential distribution.

Above-mentioned helix tube 5 has a plurality of, is provided with four in the present embodiment and (also can sees also Fig. 4 and Fig. 5 for inside and outside three sheathed helix tubes as required certainly.Or two, eight or ten helix tubes.), be nested with inside and outside each helix tube, and be set in jointly on the above-mentioned core body 4, each helix tube forms with hollow tube 51 coilings, and the hollow tube direction of rotation of inside and outside adjacent helix tube is opposite, here the hollow tube of each helix tube has a plurality ofly, arranges in the same way successively and turns to described helix tube, arranges the structure of coiling in the same way as adopt eight hollow tubes 51 in Fig. 4 and Fig. 5.Processing for convenience, each the hollow tube both ends in each helix tube are designed to flat segments 511 respectively, and the flat segments 511 of the hollow tube of each helix tube is along circumferentially evenly distributed.After the installation, the left end of the hollow tube of each helix tube is exposed to the b of left chamber after passing through first tube sheet 2, so that be connected with described heat transferring medium outlet 15, the right-hand member of the hollow tube of each helix tube is exposed to right chamber c after passing through second tube sheet 3, is connected with described heat transferring medium inlet 14.

In the present embodiment, the middle part of first tube sheet 2 and second pipe 3 all has and the corresponding through hole of the core body mouth of pipe.Also dispose first simultaneously and take over 6 and second adapter 7, first adapter, 6 the inners are passed flat head 12 backs that are positioned at first tube sheet outside and are fixedly connected with first tube sheet 2, and it is corresponding with the through hole on first tube sheet 2, be connected with the left end mouth of pipe of described core body 4 by the through hole on first tube sheet like this, the outer end of this first adapter 6 becomes material inlet end 61.Equally, after passing the flat head 12 that is positioned at second tube sheet, 3 outsides, second adapter, 7 the inners are fixed in second tube sheet 3, and it is corresponding with the through hole on second tube sheet 3, be connected with the right-hand member mouth of pipe of core body by the through hole on second tube sheet 3 like this, this second outer end of taking over becomes material outlet end 71.

In order in time to know temperature, the pressure and other parameters in the polymerization process, on the middle chamber of contiguous second tube sheet, be provided with the first temperature interface 16 and the second temperature interface 17, on left and right chamber, be respectively equipped with the 3rd temperature interface and 18 the 4th temperature interfaces 19.Install on the middle chamber and be provided with pressure gauge connection 10.Add simultaneously some auxiliary materials for convenience, take over first and have diluent inlet 62 and tracer inlet 63.And in second adapter, have sample tap 72.

During use, polymer material enters from the first material inlet end of taking over 61 (i.e. first outer end of taking over), successively behind the left end mouth of pipe and through hole 41 of the through hole of first tube sheet 2, core body,, take over 7 backs through the through hole, second of the through hole 41 of core body right-hand member and the mouth of pipe, second tube sheet 3 successively again and flow out outside cylindrical shell between innermost layer helix tube and the core body outer wall, between each helix tube, flow between outermost layer helix tube and the tubular shell inwall successively from the second material outlet end of taking over 71 (i.e. the outer end of second adapter).Heat transferring medium then flows at the heat transferring medium of right chamber 14 places that enter the mouth, and flows into successively behind right chamber c in the hollow tube 51 of each helix tube, flows into the b of left chamber then and flows out from the heat transferring medium outlet 15 on left chamber's sidewall, to realize pure countercurrent flow.

Although more than described preferred embodiment of the present utility model in detail, should be expressly understood that for a person skilled in the art, the utility model can have various changes and variation.All any modifications of within spirit of the present utility model and principle, being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. the polymer reactor of a new structure, comprise that an end is provided with heat transferring medium outlet (15), the other end is provided with the cylindrical shell (1) of heat transferring medium inlet (14), it is characterized in that: first tube sheet (2) is installed in the described cylindrical shell, second tube sheet (3) and the core body (4) between first tube sheet and second tube sheet, the two ends of this core body are supported on respectively on aforesaid first tube sheet and second tube sheet, and the two ends of this core body are designed to nozzle structure respectively, on the sidewall of the described mouth of pipe, have through hole (41), this core body then is with the helix tube (5) that forms with hollow tube (51) coiling that is nested with inside and outside a plurality of outward, the hollow tube direction of rotation of inside and outside adjacent helix tube is opposite, one end of the hollow tube of each helix tube (51) passes through first tube sheet (2) back and is connected with described heat transferring medium outlet (15), and the other end of the hollow tube of each helix tube passes through described second tube sheet (3) back and is connected with described heat transferring medium inlet (14); Simultaneously, first takes over and to be connected with an end mouth of pipe of described core body (4) after the wall of above-mentioned cylindrical shell is passed in (6) the inner, and this first outer end of taking over (6) becomes material inlet end (61); Second the inner of taking over (7) is connected with the other end mouth of pipe of described core body (4) after also passing the wall of described cylindrical shell, and this second outer end of taking over (7) becomes material outlet end (71).

2. the polymer reactor of new structure according to claim 1, it is characterized in that: described helix tube (5) has 2～10.

3. the polymer reactor of new structure according to claim 1 is characterized in that: described through hole (41) is designed to the slotted hole that distributes along circumferentially.

4. the polymer reactor of new structure according to claim 1 and 2, it is characterized in that: the hollow tube of described each helix tube (51) has a plurality of, arranges in the same way successively and turns to described helix tube.

5. the polymer reactor of new structure according to claim 4, it is characterized in that: each the hollow tube both ends in described each helix tube are designed to flat segments (511) respectively, and the flat segments of the hollow tube of each helix tube is along circumferentially evenly distributed.