CN201203339Y

CN201203339Y - Drying device for producing pre-orientation thread continuous yarn by recovering polyester bottle sheet material

Info

Publication number: CN201203339Y
Application number: CNU200720030692XU
Authority: CN
Inventors: 段建国; 张德先; 冯希泉; 王登勋; 雷景波; 罗国梁
Original assignee: Shandong Yangxin Longfu Chemical Fibre Co Ltd
Current assignee: Longfu Recycling Energy Scientech Co., Ltd.
Priority date: 2007-11-14
Filing date: 2007-11-14
Publication date: 2009-03-04
Anticipated expiration: 2017-11-14

Abstract

The utility model provides a drying device in the pre-oriented polyester filament yarn produced by recycling PET bottle chip. The drying device is provided with a crystal bed body; a feeding hole and a crystal hot-blast outlet is respectively arranged at the upper part of the crystal bed body; a crystal hot-blast inlet is arranged at the lower part of the crystal bed body and a raw material outlet is positioned at the bottom of the crystal bed body; a stop bent plate is arranged inside the crystal bed body at the lower part of the crystal hot-blast outlet; two spiral mixers are positioned inside a drying tower vertically; a discharge holt is arranged at the lower part of the dying tower; a hot-blast inlet and a hot-blast outlet is arranged at the lower part and the upper part of the drying tower respectively. Such drying device adopts the filling drying method to ensure uniform drying. Compared with the drum drying, the filling drying method can solve the inconsistent moisture content problem of the PET bottle chip between drums; the spiral mixers arranged in the drying tower can solve the possible <Bridging> problem of the recycling PET bottle chip in the drying process. The drying device has the advantages of good drying result and rational structure, which can meet the mass production requirement for polyester POY filament yarn from the recycling PET bottle chip.

Description

By the drying device that reclaims in the polyester bottle sheet material production terylene pre-oriented fiber long filament

Technical field

The utility model provides the device in a kind of terylene POY filament production, and is especially a kind of by the drying device in PET bottle chips large-scale production preoriented yarn (POY) long filament.

Background technology

At present, polyester (PET) bottle (as mineral water bottle, beverage bottle, edible oil bottle etc.) nearly all is not biodegradable.Current people environmental protection requirement has been mentioned higher degree, handled and recycle the key issue that the waste polyester bottle has become the polyester industrial sustainable development.Though in the last few years, people had developed the method for some recyclings, only limited to the field of some low-end products and experimental nature.Such as making short fiber, make the experiment of production long filament of small screw in the laboratory with reclaiming PET bottle chips (i.e. polyester bottles of Hui Shouing be ground into sheet stock).Chinese patent publication number CN1683612 discloses a kind of " directly being made the production method of fiber by the polyester bottle sheet material that reclaims ", polyester filament spins with the examination of polyester bottle slice reclaimed materials in fiber material modification National Key Laboratory of Donghua University, and Zhejiang is sent out Fabritex S.r.l. bottle chips and reworked material production hollow and cotton-type short fiber etc. greatly.The dry drum dried equipment that adopts usually in these methods, between causing dry back drum and rousing between the bottle chips moisture content inconsistent, thereby can not produce high-end product.The part method adopts the fill-type drying equipment, but existing this equipment only is fit to the primary polyester slice of processing, can not process the returnable bottle sheet stock.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of by the drying device that reclaims in the polyester bottle sheet material production terylene pre-oriented fiber long filament, to improve its drying effect.

The utility model is to realize like this, by the drying device that reclaims in the polyester bottle sheet material production terylene pre-oriented fiber long filament, it has crystallizing bed body, charging aperture and crystallization hot-blast outlet are arranged respectively at crystallizing bed body top, the crystallization heat wind inlet is arranged at crystallizing bed body bottom, material outlet is arranged at the bottom, in the crystallizing bed body below the crystallization hot-blast outlet backgauge bent plate is arranged, material outlet is connected with the top of drying tower by conveyance conduit, a pair of spiral agitator vertically is installed in the drying tower, there is discharging opening the drying tower lower end, and hot blast import and hot-blast outlet are also arranged respectively at the bottom of drying tower and top.

The drying device of this structure adopts the fill-type drying mode, has guaranteed uniform drying, compares with drum drying, solved in the large-scale production process, and the inconsistent problem of bottle chips moisture content between drum and the drum, and pilot process is few, and operating cost is low; In drying tower, be provided with spiral agitator, solved recovery PET bottle chips because of the unit volume quality little and out-of-shape, and the problem of " bridging " takes place in dry run easily; It is in light weight that being provided with of backgauge bent plate solved recovery PET bottle chips, and impurity is many, may cause the fly out problem of crystallizing bed body of the light sheet of dust from flying or part; Drying effect is good and rational in infrastructure, has satisfied to reclaim the production requirement of PET bottle chips producing terylene POY filament in scale.

Description of drawings

Fig. 1 is the schematic diagram of the utility model structure.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing illustrates concrete structure of the present utility model and operation principle.

As shown in drawings, the utility model produce drying device in the terylene pre-oriented fiber long filament by reclaiming polyester bottle sheet material, it has crystallizing bed body 3, charging aperture 1 and crystallization hot-blast outlet 11 are arranged respectively at crystallizing bed body top, crystallization heat wind inlet 2 is arranged at crystallizing bed body bottom, material outlet 4 is arranged at the bottom, in the crystallizing bed body below the crystallization hot-blast outlet backgauge bent plate 12 is arranged, material outlet 4 is connected by the top of conveyance conduit 5 with drying tower 8, a pair of spiral agitator 9 vertically is installed in the drying tower, there is discharging opening 6 the drying tower lower end, and hot blast import 7 and hot-blast outlet 10 are also arranged respectively at the bottom of drying tower and top.

During use, recovery PET bottle chips to be dried is sent into crystallizing bed body 3 through charging aperture 1, the hot blast that is about 170 ℃ with the temperature of coming in from crystallization heat wind inlet 2 contacts, and the surface of bottle chips forms the thin brilliant shell of one deck, to avoid the adhesion between the bottle chips in next step drying.The bottle chips that the surface forms behind the brilliant shell enters in the drying tower through conveyance conduit 5 from material outlet 4, descending under the effect of the stirring action of spiral agitator 9 and deadweight, discharge from the discharging opening 6 of drying tower lower end at last, enter in the screw extruder in the next process.Bottle chips is in descending process, and the hot blast at a slow speed that is about 165 ℃ with the temperature of coming in from the hot blast import contacts, and the moisture that bottle chips inside is contained is dried out, accompanys or follow the hot blast that hot-blast outlet 10 discharges and discharges.

The structure of crystallizing bed body and existing crystallizing bed body are basic identical, just in order to adapt to requirement of massive production, crystallizing bed height are suitably strengthened, to increase volume.

Utilize the drying device of the utility model,, can realize 45 tons of the dailys output, 15000 tons of annual productions, reached large-scale production being that raw material is produced in the process of terylene POY filament to reclaim the PET bottle chips.

Claims

1, by the drying device that reclaims in the polyester bottle sheet material production terylene pre-oriented fiber long filament, it is characterized in that, it has crystallizing bed body (3), charging aperture (1) and crystallization hot-blast outlet (11) are arranged respectively at crystallizing bed body top, crystallization heat wind inlet (2) is arranged at crystallizing bed body bottom, material outlet (4) is arranged at the bottom, backgauge bent plate (12) is arranged in the crystallizing bed body below the crystallization hot-blast outlet, material outlet (4) is connected by the top of conveyance conduit (5) with drying tower (8), a pair of spiral agitator (9) vertically is installed in the drying tower, there is discharging opening (6) the drying tower lower end, and hot blast import (7) and hot-blast outlet (10) are also arranged respectively at the bottom of drying tower and top.