CN109304046A - A kind of extraction tower for cotton synthetic fibre PA6 - Google Patents

A kind of extraction tower for cotton synthetic fibre PA6 Download PDF

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Publication number
CN109304046A
CN109304046A CN201811339630.6A CN201811339630A CN109304046A CN 109304046 A CN109304046 A CN 109304046A CN 201811339630 A CN201811339630 A CN 201811339630A CN 109304046 A CN109304046 A CN 109304046A
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CN
China
Prior art keywords
plate
ring flat
extraction
taper ring
cone
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Pending
Application number
CN201811339630.6A
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Chinese (zh)
Inventor
赵冉
杨东昌
李道杰
陈元彬
魏传国
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Liaocheng Meisi New Material Technology Co Ltd
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Liaocheng Meisi New Material Technology Co Ltd
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Priority to CN201811339630.6A priority Critical patent/CN109304046A/en
Publication of CN109304046A publication Critical patent/CN109304046A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D11/00Solvent extraction
    • B01D11/02Solvent extraction of solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D11/00Solvent extraction
    • B01D11/02Solvent extraction of solids
    • B01D11/0207Control systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D11/00Solvent extraction
    • B01D11/02Solvent extraction of solids
    • B01D11/0215Solid material in other stationary receptacles
    • B01D11/0223Moving bed of solid material
    • B01D11/0242Moving bed of solid material in towers, e.g. comprising contacting elements

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

The invention discloses a kind of extraction towers for polyamide fibre PA6, including upper cone, column-shaped barrel, extract annular slab component, lower cone, upper cone, column-shaped barrel, lower cone combines as a whole from top to bottom and inside communicates, extraction annular slab component is several extraction annular slabs, several extraction annular slabs and it is distributed in the intracorporal different layers of pillar buoy, it includes big for extracting annular slab, fine taper ring flat-plate, fine taper ring flat-plate covers in big taper ring flat-plate, the inner circle edge of big taper ring flat-plate and the outer circular edge of fine taper ring flat-plate pass through link of boards, and the inner circle edge of big taper ring flat-plate is not contacted with the outer circular edge of fine taper ring flat-plate, big taper ring flat-plate outer diameter is equal with column-shaped barrel internal diameter, the outer diameter of fine taper ring flat-plate is equal with big taper ring flat-plate internal diameter, greatly, the cone angle of fine taper ring flat-plate is 90 °, it is W-shaped for extracting the axial cross section of annular slab.The present invention can be effectively reduced slice oligomer, realize the Resource regeneration of chinlon 6 section production.

Description

A kind of extraction tower for cotton synthetic fibre PA6
Technical field
The invention belongs to chemical production field, it is related to the extraction equipment for chinlon 6 section surface oligomers, and in particular to A kind of extraction tower for polyamide fibre PA6.
Background technique
Polyamide fibre 6 (PA6) slice, molecular formula is-[NH (CH2)5CO]n, dissolve in phenol and the concentrated sulfuric acid of heat, there is heat The characteristics such as plasticity, lightweight, good toughness, chemicals-resistant and durability be good are generally used for auto parts and components, mechanical part, electronics electricity The products such as device product, engineering accessory are the fibers that wear-resisting property is best in synthetic fibers.
In the production of PA6 slice, dry chip oligomer is an important indicator for measuring chipping qualities, oligomer Too high levels can be such that it evaporates during later period high speed spinning, increase broken end, generate the silk that floats, seriously affect product matter Amount.Publication No. CN105233525A patent discloses a kind of umbrella shape allocation member for being conducive to particle flow in PA6 extraction tower, Its shortcomings that there are the following aspects: 1, structure is complicated for inner member;2, the intermediate connection column inside extraction tower and connection Beam causes certain resistance to material Radial Flow, and the utilization rate of extraction tower is lower;3, one-part form counter-current extraction, there are extraction waters The problem low with slice heat transfer efficiency.Meanwhile having dead angle in the extraction tower tower, the drawbacks such as resistance to mass tranfer is big.
Summary of the invention
In order to solve the deficiencies in the prior art, an object of the present invention is to provide a kind of extraction tower for polyamide fibre PA6, Slice oligomer is effectively reduced, the Resource regeneration of chinlon 6 section production is realized.
To achieve the goals above, the technical solution of the present invention is as follows:
A kind of extraction tower for polyamide fibre PA6, including upper cone, column-shaped barrel, extraction annular slab component, lower cone, on Cone, column-shaped barrel, lower cone combine as a whole from top to bottom and inside communicates, and the cone mouth of upper cone is feed inlet, upper cone Side wall opens up top water outlet, and the cone mouth of lower cone is discharge port, and the side wall of lower cone opens up lower water inlet, extracts annular slab Component is several extraction annular slabs, several extraction annular slabs and is distributed in the intracorporal different layers of pillar buoy, extracts annular slab and includes Large and small taper ring flat-plate, fine taper ring flat-plate cover in big taper ring flat-plate, the inner circle edge of big taper ring flat-plate and fine taper ring flat-plate it is outer The edge of the circle is by link of boards, and the inner circle edge of big taper ring flat-plate is not contacted with the outer circular edge of fine taper ring flat-plate, big taper Ring flat-plate outer diameter is equal with column-shaped barrel internal diameter, and the outer diameter of fine taper ring flat-plate is equal with big taper ring flat-plate internal diameter, large and small taper ring flat-plate Cone angle be 90 °, extract annular slab axial cross section be it is W-shaped.
The taper ring flat-plate and two ring flat-plates that existing extraction annular slab is generally 40 ° by three cone angles form, and the present invention will Extraction annular slab is changed to the taper ring flat-plate that two cone angles are 90 ° and constitutes, and two taper ring flat-plates are effectively reduced by link of boards Extraction water circulation resistance, reduces ring flat-plate resistance, is more favorable for the flowing of slice.
Preferably, extraction annular slab is connect by gusset with column-shaped barrel.
Preferably, interior in column-shaped barrel to be equipped with 10 layers of extraction annular slab.
Preferably, the upper portion side wall of column-shaped barrel opens up circulating outlet, the lower sides of column-shaped barrel open up recycle into The mouth of a river, circulating outlet connect circulation water inlet by pipeloop.By the way that extraction water recycle circuit is arranged, can effectively control The uniformity coefficient of extraction water, to reach the uniform effect of effect of extracting.
It is further preferred that the pipeloop is equipped with water pump.
It is further preferred that the upper portion side wall of column-shaped barrel opens up two opposite circulating outlets, under column-shaped barrel Portion's side wall opens up two opposite circulation water inlets, and ipsilateral circulating outlet is connected with circulation water inlet by pipeloop.
It is further preferred that extraction annular slab from top to bottom presses number of plies sequence, circulating outlet and circulation in column-shaped barrel Water inlet setting is between the 4th layer of extraction annular slab and layer 5 extraction annular slab.
Still more preferably, the column-shaped barrel side wall on the top of the four, the seven, ten layers of extraction annular slab opens up manhole.
Preferably, column-shaped barrel installs heating coil.
Preferably, inner cone is cased in lower cone, the necking down direction of inner cone and the necking down direction of lower cone are identical, inner cone The top of body is connect with lower cone, and junction is located at the top of lower water inlet, and the other parts of inner cone are hanging, make inner cone Annular space is formed between body sidewall and lower cone side wall.The purpose is to avoid water from directly entering from the inlet in column-shaped barrel Stable extraction water water inlet water flow is played the role of in portion, guarantees that extraction water inlet is uniform.
Preferably, the upper portion side wall of column-shaped barrel opens up top water inlet, and top water outlet connects top water inlet.
The second object of the present invention is to provide a kind of above-mentioned extraction tower to prepare the application in polyamide fibre PA6 technique.
The invention has the benefit that
Improve Temperature Distribution of the slice in extraction tower, strengthen the relative flow state of slice with water, so that slice is in weight Power effect is lower to be come into full contact with upstream extraction water, in the identical situation of bath raio, improve extraction water and chinlon 6 section it Between heat transfer, mass-transfer efficiency.Meanwhile improvement of the present invention for extraction annular slab, and can reduce the number of plies of extraction annular slab, The piling height of the bulk density and tower interannular that are sliced in extraction tower can also be effectively improved, to reduce containing for slice oligomer Amount.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural schematic diagram of traditional extraction annular slab;
Fig. 2 is the structural schematic diagram of extraction tower of the present invention;
Fig. 3 is the structural schematic diagram of present invention extraction annular slab;
Wherein, 1, upper cone, 2, cylindrical tube, 3, lower cone, 4, feed inlet, 5, top water outlet, 6, lower part water inlet Mouthful, 7, discharge port, 8, inner cone, 9, steam inlet, 10, top water inlet, 11, condensation-water drain, 12, circulating outlet, 13, Circulation water inlet, 14, manhole, 15, big taper ring flat-plate, 16, fine taper ring flat-plate, 17, gusset.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Upper cone described herein refers at the top of column-shaped barrel, by column-shaped barrel upward necking down structure that diameter is minimum Mouth be upper cone cone mouth.
Lower cone described herein refers to column-shaped barrel bottom, the necking down structure downward by column-shaped barrel, and diameter is minimum Mouth be lower cone cone mouth.
As background technique is introduced, the extraction tower heat and mass low efficiency film city of polyamide fibre PA6 exists in the prior art The deficiency of product quality, in order to solve technical problem as above, present applicant proposes the extraction towers that kind is used for polyamide fibre PA6.
A kind of exemplary embodiment of the application provides a kind of extraction tower for polyamide fibre PA6, including upper cone, column Shape cylinder, extraction annular slab component, lower cone, upper cone, column-shaped barrel, lower cone combine as a whole from top to bottom and internal phase Logical, the cone mouth of upper cone is feed inlet, and the side wall of upper cone opens up top water outlet, and the cone mouth of lower cone is discharge port, lower cone The side wall of body opens up lower water inlet, and extraction annular slab component is several extraction annular slabs, several extraction annular slabs and is distributed in The intracorporal different layers of pillar buoy, extraction annular slab includes large and small taper ring flat-plate, and fine taper ring flat-plate covers in big taper ring flat-plate, greatly The outer circular edge of the inner circle edge of taper ring flat-plate and fine taper ring flat-plate by link of boards, and the inner circle edge of big taper ring flat-plate with The outer circular edge of fine taper ring flat-plate does not contact, and big taper ring flat-plate outer diameter is equal with column-shaped barrel internal diameter, the outer diameter of fine taper ring flat-plate Equal with big taper ring flat-plate internal diameter, the cone angle of large and small taper ring flat-plate is 90 °, and it is W-shaped for extracting the axial cross section of annular slab.
The application will extract annular slab and be changed to the taper ring flat-plate composition that two cone angles are 90 °, and two taper ring flat-plates pass through Link of boards effectively reduces extraction water circulation resistance, reduces ring flat-plate resistance, is more favorable for the flowing of slice.
Preferably, extraction annular slab is connect by gusset with column-shaped barrel.
Preferably, interior in column-shaped barrel to be equipped with 10 layers of extraction annular slab.
Preferably, the upper portion side wall of column-shaped barrel opens up circulating outlet, the lower sides of column-shaped barrel open up recycle into The mouth of a river, circulating outlet connect circulation water inlet by pipeloop.By the way that extraction water recycle circuit is arranged, can effectively control The uniformity coefficient of extraction water, to reach the uniform effect of effect of extracting.
It is further preferred that the pipeloop is equipped with water pump.
It is further preferred that the upper portion side wall of column-shaped barrel opens up two opposite circulating outlets, under column-shaped barrel Portion's side wall opens up two opposite circulation water inlets, and ipsilateral circulating outlet is connected with circulation water inlet by pipeloop.
It is further preferred that extraction annular slab from top to bottom presses number of plies sequence, circulating outlet and circulation in column-shaped barrel Water inlet setting is between the 4th layer of extraction annular slab and layer 5 extraction annular slab.
Still more preferably, the column-shaped barrel side wall on the top of the four, the seven, ten layers of extraction annular slab opens up manhole.
Preferably, column-shaped barrel installs heating coil.
Preferably, inner cone is cased in lower cone, the necking down direction of inner cone and the necking down direction of lower cone are identical, inner cone The top of body is connect with lower cone, and junction is located at the top of lower water inlet, and the other parts of inner cone are hanging, make inner cone Annular space is formed between body sidewall and lower cone side wall.The purpose is to avoid water from directly entering from the inlet in column-shaped barrel Stable extraction water water inlet water flow is played the role of in portion, guarantees that extraction water inlet is uniform.
Preferably, the upper portion side wall of column-shaped barrel opens up top water inlet, and top water outlet connects top water inlet.
The another embodiment of the application provides a kind of above-mentioned extraction tower and is preparing the application in polyamide fibre PA6 technique.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool The technical solution of the application is described in detail in the embodiment of body.
Traditional extraction annular slab, as shown in Figure 1, the taper ring flat-plate and two ring flat-plates that are 40 ° by three cone angles form.
The present embodiment improves the extraction annular slab, as shown in figure 3, extraction annular slab includes large and small taper ring flat-plate, Fine taper ring flat-plate covers in big taper ring flat-plate, and the inner circle edge of big taper ring flat-plate and the outer circular edge of fine taper ring flat-plate pass through gusset Connection, and the inner circle edge of big taper ring flat-plate is not contacted with the outer circular edge of fine taper ring flat-plate, big taper ring flat-plate outer diameter and cylindricality Cylinder internal diameter is equal, and the outer diameter of fine taper ring flat-plate is equal with big taper ring flat-plate internal diameter, and the cone angle of large and small taper ring flat-plate is 90 °, It is W-shaped for extracting the axial cross section of annular slab.
A kind of extraction tower for polyamide fibre PA6, as shown in Fig. 2, by upper cone 1, the cylindrical tube 2 of DN=2600, extraction Annular slab, heating coil, condensation water coil, inner cone 8, lower cone 3 is taken to form.Wherein, upper cone 1, cylindrical tube 2, cone Shape extraction ring flat-plate, inner cone 8, lower cone 3 combines as a whole from top to bottom and inside communicates, and extraction tower uses low-pressure steam heat tracing, Heating coil material is No. 20 steel, is welded on 2 outer wall of cylindrical tube.Steam lime set after heat exchange condenses passes through hydrophobic Valve enters condensation water coil, and coil pipe material is that No. 20 steel are looped around on 2 outer wall of cylindrical tube by being welded.Extraction tower passes through The steam pipe coil of 2 outer wall of cylindrical tube is heated, and wherein steam enters heating coil by N6 steam inlet 9, to cylinder 2 heat tracing condensed water of shape cylinder enters condensation water coil by drain valve, and is discharged by N7 condensation-water drain 11.
It is respectively open in extraction tower, mainly includes top N1 feed inlet 4, the top N2 water inlet 10, N3 lower water inlet 6, N4 Lower water inlet, N5 manhole 14, lower part N8 discharge port 7, N6 steam inlet 9, N7 condensation-water drain, N8 discharge port, the top N9 go out The mouth of a river 5, wherein middle part is equipped with the support for support;Several thermocouple temperature sensor thermometrics are distributed in 2 top of cylindrical tube Hole.Extraction tower respectively sets the manhole of a DN500 at the four, the seven, ten taper ring flat-plate top cylinders.Totally 10 layers from bottom to top of extraction tower Extract annular slab.
Cylindrical tube, top are discharged using two-way, and lower part is intake using two-way, contraposition Inlet and outlet water are respectively adopted, effectively The uniformity coefficient of extraction water is controlled, to reach the uniform effect of effect of extracting.4th layer is set up separately extraction between layer 5 annular slab The circulation water inlet 13 and circulating outlet 12 of water intaking, add forced circulation.
Chinlon 6 section enters in tower from N1 feed inlet at the top of extraction tower, makes slice can be uniform by being sliced distributor It is assigned on extraction tower section.Slice relies on gravity Uniform Flow from top to bottom, forms accumulation on extraction annular slab, cuts Piece is slowly flowed downward by extracting annular slab lower part discharge port.Water temperature is increased to suitable by desalted water under outer heating device effect Suitable temperature enters extraction tower from tower bottom N3 extraction water lower water inlet, forms counter-current flow with slice from bottom to top.
The present embodiment use 10 layers of extraction annular slab, this guarantee be sliced can between tower ring with the state of approximate laminar flow to Lower flowing, and there is no dead angle, the slice for being introduced into extraction tower first flows out, and guarantees the stability of chipping qualities.It extracts in annular slab Axis guarantees higher concentricity, can be effectively reduced extraction water resistance, extracts at annular slab feed opening, and flow area narrows, Slice and the relative flow speed of extraction water are accelerated, and form high speed convection, the oligomer for partially depending on slice surface is set in time It swaps out, substantially increases extraction efficiency.Into after next layer of extraction annular slab, slice flow velocity is slack-off, stays for some time, low Polymers is gradually precipitated, and stablizes extraction, so passes through the extraction of several same units, slice oligomer is effectively reduced.
The present embodiment extraction tower top extraction water contains the caprolactam monomer and oligomer of higher concentration, extracts by N9 Portion's water outlet waterborne overflows extraction tower, is recycled.The extraction water water of spilling is supplemented by adding desalted water, guarantees extraction The continuous-stable taken carries out.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.

Claims (10)

1. a kind of extraction tower for polyamide fibre PA6, characterized in that including upper cone, column-shaped barrel, extraction annular slab component, under Cone, upper cone, column-shaped barrel, lower cone combine as a whole from top to bottom and inside communicates, and extraction annular slab component is several extractions It takes annular slab, several extraction annular slabs and is distributed in the intracorporal different layers of pillar buoy, extraction annular slab includes large and small conical ring Plate, fine taper ring flat-plate cover in big taper ring flat-plate, and the inner circle edge and the outer circular edge of fine taper ring flat-plate of big taper ring flat-plate pass through Link of boards, and the inner circle edge of big taper ring flat-plate is not contacted with the outer circular edge of fine taper ring flat-plate, big taper ring flat-plate outer diameter and Column-shaped barrel internal diameter is equal, and the outer diameter of fine taper ring flat-plate is equal with big taper ring flat-plate internal diameter, and the cone angle of large and small taper ring flat-plate is 90 °, it is W-shaped for extracting the axial cross section of annular slab.
2. extraction tower as described in claim 1, characterized in that extraction annular slab is connect by gusset with column-shaped barrel.
3. extraction tower as described in claim 1, characterized in that be equipped with 10 layers of extraction annular slab in column-shaped barrel.
4. extraction tower as described in claim 1, characterized in that the upper portion side wall of column-shaped barrel opens up circulating outlet, cylindricality The lower sides of cylinder open up circulation water inlet, and circulating outlet connects circulation water inlet by pipeloop.
5. extraction tower as claimed in claim 4, characterized in that the pipeloop is equipped with water pump.
6. extraction tower as claimed in claim 4, characterized in that the upper portion side wall of column-shaped barrel opens up two and opposite recycles The mouth of a river, the lower sides of column-shaped barrel open up two opposite circulation water inlets, ipsilateral circulating outlet and circulation water inlet It is connected by pipeloop.
7. extraction tower as claimed in claim 6, characterized in that extraction annular slab from top to bottom presses number of plies row in column-shaped barrel Sequence, circulating outlet and circulation water inlet setting are between the 4th layer of extraction annular slab and layer 5 extraction annular slab.
8. extraction tower as claimed in claim 7, characterized in that be cased with inner cone in lower cone, the necking down direction of inner cone with The necking down direction of lower cone is identical, and the top of inner cone is connect with lower cone, and junction is located at the top of lower water inlet, interior The other parts of cone are hanging, make to form annular space between inner cone body sidewall and lower cone side wall.
9. extraction tower as described in claim 1, characterized in that the upper portion side wall of column-shaped barrel opens up top water inlet, top Water outlet connects top water inlet.
10. a kind of any extraction tower of claim 1~9 is preparing the application in polyamide fibre PA6 technique.
CN201811339630.6A 2018-11-12 2018-11-12 A kind of extraction tower for cotton synthetic fibre PA6 Pending CN109304046A (en)

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Application Number Priority Date Filing Date Title
CN201811339630.6A CN109304046A (en) 2018-11-12 2018-11-12 A kind of extraction tower for cotton synthetic fibre PA6

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615243A (en) * 1969-05-22 1971-10-26 Clarence W Scott Apparatus for extracting liquid from a mobile semisolid cellular system
CN201760123U (en) * 2010-06-01 2011-03-16 北京三联虹普新合纤技术服务股份有限公司 Nylon PA6 polymerization novel extraction tower
CN204134253U (en) * 2014-08-27 2015-02-04 江苏弘盛新材料股份有限公司 A kind of extraction tower
CN105233525A (en) * 2015-10-20 2016-01-13 北京三联虹普新合纤技术服务股份有限公司 Umbrella-shaped distribution component favorable for flowing of particles in extraction tower of nylon 6
CN107961558A (en) * 2016-10-18 2018-04-27 新昌县和邦机械科技有限公司 A kind of function that the distance between positive vertebra tower tray and back taper tower tray can be conveniently adjusted without provision for disengagement
CN108245926A (en) * 2018-02-23 2018-07-06 丹阳同泰化工机械有限公司 A kind of extraction tower of resinae slice

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3615243A (en) * 1969-05-22 1971-10-26 Clarence W Scott Apparatus for extracting liquid from a mobile semisolid cellular system
CN201760123U (en) * 2010-06-01 2011-03-16 北京三联虹普新合纤技术服务股份有限公司 Nylon PA6 polymerization novel extraction tower
CN204134253U (en) * 2014-08-27 2015-02-04 江苏弘盛新材料股份有限公司 A kind of extraction tower
CN105233525A (en) * 2015-10-20 2016-01-13 北京三联虹普新合纤技术服务股份有限公司 Umbrella-shaped distribution component favorable for flowing of particles in extraction tower of nylon 6
CN107961558A (en) * 2016-10-18 2018-04-27 新昌县和邦机械科技有限公司 A kind of function that the distance between positive vertebra tower tray and back taper tower tray can be conveniently adjusted without provision for disengagement
CN108245926A (en) * 2018-02-23 2018-07-06 丹阳同泰化工机械有限公司 A kind of extraction tower of resinae slice

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* Cited by examiner, † Cited by third party
Title
北京合成纤维实验厂: "《锦纶生产》", 30 April 1976, 石油化学工业出版社 *
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