EP3676407A1 - Verfahren zur förderung und dosierung von kleinteiligen feuchten lederstücken in einen reaktor - Google Patents
Verfahren zur förderung und dosierung von kleinteiligen feuchten lederstücken in einen reaktorInfo
- Publication number
- EP3676407A1 EP3676407A1 EP18756471.1A EP18756471A EP3676407A1 EP 3676407 A1 EP3676407 A1 EP 3676407A1 EP 18756471 A EP18756471 A EP 18756471A EP 3676407 A1 EP3676407 A1 EP 3676407A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leather
- pieces
- reactor
- small
- moist
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B7/00—Special leathers and their manufacture
- C14B7/02—Composite leathers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G19/00—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors
- B65G19/14—Conveyors comprising an impeller or a series of impellers carried by an endless traction element and arranged to move articles or materials over a supporting surface or underlying material, e.g. endless scraper conveyors for moving bulk material in closed conduits, e.g. tubes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L89/00—Compositions of proteins; Compositions of derivatives thereof
- C08L89/04—Products derived from waste materials, e.g. horn, hoof or hair
- C08L89/06—Products derived from waste materials, e.g. horn, hoof or hair derived from leather or skin, e.g. gelatin
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B13/00—Shredding hides or leather
Definitions
- open conveyor belts have significant drawbacks such as increased contamination, poor dosability, and the inability to overcome large differences in altitude over a short distance.
- EP 2714756 discloses an advantageous process by means of which retanning agents can be produced from leather shavings or other small pieces of leather in a reactor. This makes it possible to produce from the waste in leather production, which are incurred by far the greater part in the tannery, new raw materials for tanning, which can be used directly on site, thus in addition to reducing the waste and the same expenses to optimize the transport.
- the installation and operation of a plant for such a process requires extensive technical know-how, which is often not available to a required extent in a tannery.
- Plant parts for the method i. at least one reactor and a conveyor for small pieces of moist pieces of leather are integrated into the container.
- the wet leather particles in particular Lederfalzs Georgne be promoted by a feed device to the higher inlet opening of the reactor and subjected to hydrolysis in the reactor and, where appropriate, further chemical reactions.
- a tube chain conveyor is known to the person skilled in the art and is used for conveying bulk materials. It typically comprises at least one respective tensioning station, a drive station, a tubular housing, a revolving conveyor chain with drive disks mounted at specific intervals.
- the conveyor chain is guided through the tube housing and forms limited spaces through the driver disks in the tube housing, so-called tube chain segments, which move in the tube as a result of the movement of the circulating chain and thus enable transport of the conveyed material.
- Tube chain conveyors are u.a. sold by the company Hartmann, Wardenburg and the company Schräge, Friedeburg.
- An essential aspect is therefore a method for conveying small pieces of moist leather pieces, preferably leather shavings comprising the promotion of the leather pieces in a tube chain conveyor.
- finely divided are typically meant dimensions of the leather (LxWxH) of up to 200x30x4 mm, preferably of up to 150x20x3mm and more preferably of up to 120x20x3 mm, with leather-shavings also larger dimensions are included, since the leather-falzs Georgne when folding occasionally in the form of strands or herbaceous forms.
- Moist leather particles are typically understood to mean those having a water content of at least 35% by weight, preferably at least 45% by weight and particularly preferably at least 50% by weight.
- the upper limit of the water content is arbitrary, preferably 90 wt.%, Particularly preferably 80 wt .-%.
- Suitable devices for this process are as follows:
- the broadest embodiment relates to a device for treating small-sized pieces of moist leather, preferably leather shavings, in a reactor comprising a reactor and a tube chain conveyor as conveying means for the pieces of leather.
- treatment preferably means the chemical treatment of pieces of leather, more preferably their hydrolysis, ie the chemical reduction of the molecular weight of the collagen chains of the leather, with further reactions being able to follow.
- treatment means the chemical transformation of the leather pieces into retanning agents, as described in EP 2714756.
- retanning agents are meant auxiliaries, which are incorporated in the re-tanning in the leather matrix.
- Synthetic tanning agents, vegetable tanning agents and resin and polymer tanning agents can be used for this purpose, in particular also syntheses, substitution tanning agents.
- Particularly preferred retanning agents are graft polymers of acrylic acid and / or methacrylic acid with hydrolyzed amylose and / or , ,
- hydrolyzed proteins as also described in EP 2714756.
- the hydrolyzed amylose are present in the form of short-chain saccharides and the hydrolyzed proteins in the form of short-chain peptides, as described in each case in EP 2714756.
- any suitable for the respective chemical treatment reaction container is suitable, which can then be suitably selected by the skilled person according to the respective requirement profile.
- the pieces of leather are typically conveyed through the tube chain conveyor to the reactor.
- a corresponding emptying device can thus be achieved a closed feeding system for the leather pieces.
- the filled with the pieces of leather tube chain segments of the tube chain conveyor are emptied from above into the reactor.
- the emptying is supported by brushing.
- the brushes are preferably moved relative to the tube chain segments, for example, oscillating or rotating movements of the brushes are useful. Suitable brush cleaning stations are u.a. in DE19728053.
- the filling of the tube chain conveyor with the pieces of leather can be done by a screw.
- the degree of filling of the chain segments can be suitably adjusted by adjusting the delivery rate of the screw and tube chain, so that the pieces of leather can be transported without compressing them.
- a further improvement in the precision of the metering can be achieved by placing the reactor on weighing elements and thus more accurately monitoring the supply of material, in particular to the pieces of leather in the reactor.
- a spiked shaft positioned in front of the screw can further reduce bridging and lumping of the pieces of leather in the feeding device, especially in the case of difficult substrates.
- such a shaft is arranged above the worm, so that the leather pieces are conveyed by gravity to the worm.
- the worm can be equipped on the circumference with cutting edges, which cuts longer strands of leather pieces so that it facilitates the filling of the tube chain segments.
- the pieces of leather can be fed batchwise (for example via transport containers by forklift) or continuously into the feed device and can be fed from there into the reactor at a controllable metering rate.
- a supply of the leather pieces to the feeding station via a conveyor belt is alternatively possible.
- Suitable task devices are u.a. sold by the company Hartmann, Wardenburg for oilseeds or by the company Schräge, Friedeburg.
- a vertical lifting of the pieces of leather of at least 1 m, preferably at least 1.5 m and particularly preferably at least 2 m can be achieved even in a compact system, the vertical increase over a horizontal distance of less than 10 m, preferably less than 4 m, and more preferably less than 2 m can be accomplished.
- the device according to the invention as a module in a container with the maximum extension of a 40 foot isocontainer. This allows easy transport of such a system on the road, the rail or on the water and thus, for example, a temporary equipment a tannery with such a device.
- Another aspect of the invention is a process for the treatment of small pieces of moist leather pieces, preferably leather shavings, comprising the promotion of the leather pieces by means of a tube chain conveyor and the chemical treatment of the leather pieces in a device according to the invention.
- the invention also relates to a process for the preparation of retanning agents from small pieces of moist pieces of leather, preferably leather shavings, comprising the promotion of the leather pieces by means of a tube chain conveyor and the hydrolysis of the leather pieces in a device according to the invention.
- a process for the preparation of retanning agents from small pieces of moist pieces of leather, preferably leather shavings comprising the promotion of the leather pieces by means of a tube chain conveyor and the hydrolysis of the leather pieces in a device according to the invention.
- amylase hydrolyzate can be added.
- a further polymerization step is then carried out with acrylic acid or methacrylic acid.
- a further aspect of the invention is a process for the production of leather (tanning), wherein the resulting in the production of small-sized moist pieces of leather, preferably leather shavings, converted by a device according to the invention in retanning and the retanning agents are returned to the process for the production of leather , - -
- FIG. 1 An example of a plant for carrying out the process according to the invention is shown in FIG. This includes the following components:
- Feeding device arranged next to the production plant, with storage container
- Tube chain for transporting the leather pieces to the hydrolysis reactor in the pilot plant
- variable-speed drive system for the realization of different dosing rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Composite Materials (AREA)
- Dermatology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Paper (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP17188377 | 2017-08-29 | ||
| PCT/EP2018/073129 WO2019043001A1 (de) | 2017-08-29 | 2018-08-28 | Verfahren zur förderung und dosierung von kleinteiligen feuchten lederstücken in einen reaktor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3676407A1 true EP3676407A1 (de) | 2020-07-08 |
Family
ID=59856347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18756471.1A Withdrawn EP3676407A1 (de) | 2017-08-29 | 2018-08-28 | Verfahren zur förderung und dosierung von kleinteiligen feuchten lederstücken in einen reaktor |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP3676407A1 (de) |
| KR (1) | KR20200044002A (de) |
| CN (1) | CN111032886A (de) |
| AR (1) | AR113103A1 (de) |
| BR (1) | BR112020003562A2 (de) |
| MX (1) | MX2020001984A (de) |
| WO (1) | WO2019043001A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1660047A1 (de) * | 1967-09-12 | 1971-10-21 | Badische Maschf Gmbh | Maschine zum kontinuierlichen Verdichten von Lederfalzspaenen,Lederstaub oder aehnlichen Gerbereiabfaellen |
| US3841465A (en) * | 1972-03-06 | 1974-10-15 | Awt Systems Inc | Solids feed to a pressurized reactor |
| HU204469B (hu) * | 1989-02-06 | 1992-01-28 | Technologiai Es Koernyezetvede | Csó'konvejor elrendezés |
| DE19728053B4 (de) | 1997-07-01 | 2004-07-22 | Ralf Schrage | Verfahren zum Einsatz einer Bürste und Bürstenstation für einen Rohrkettenförderer |
| JP2001179203A (ja) * | 1999-12-22 | 2001-07-03 | Meidensha Corp | 被処理物の搬送方法と加熱処理装置及び加熱処理施設 |
| DE10060246B4 (de) * | 2000-12-05 | 2011-05-05 | Süße, Harald, Dipl.-Ing. | Verfahren zur Verarbeitung von Tiermehlen und tierischen Hautresten zur Herstellung von Lederfaser-Verbundwerkstoffen unter Zusatz von Chromfalzspänen (CFS) und mineralischen Fasern ( TLV-Verfahren ) |
| JP2005145631A (ja) * | 2003-11-14 | 2005-06-09 | Meidensha Corp | パイプコンベアの運転方法、パイプコンベア装置及び加工設備 |
| JP4660685B2 (ja) * | 2005-03-03 | 2011-03-30 | 東急建設株式会社 | 粉粒体物質の搬送装置 |
| CN101514376B (zh) * | 2008-02-22 | 2012-06-06 | 信保贸易实业股份有限公司 | 皮革再鞣填充剂、其制造方法以及皮革再鞣填充方法 |
| CN101993960B (zh) * | 2010-11-23 | 2013-08-21 | 福建冠兴皮革有限公司 | 一种利用铬革屑的制革复鞣方法 |
| PT2714756T (pt) | 2011-06-02 | 2018-07-16 | Lanxess Deutschland Gmbh | Polímeros de enxerto à base de polissacárido e/ou polipéptido como taninos sintéticos |
| CN204399970U (zh) * | 2014-12-31 | 2015-06-17 | 襄阳航生石化环保设备有限公司 | 一种密闭式管道输送机 |
| CN204865422U (zh) * | 2015-08-12 | 2015-12-16 | 浙江百得利制革有限公司 | 一种皮革废料回收机 |
-
2018
- 2018-08-28 CN CN201880056687.7A patent/CN111032886A/zh active Pending
- 2018-08-28 KR KR1020207005563A patent/KR20200044002A/ko not_active Ceased
- 2018-08-28 BR BR112020003562-9A patent/BR112020003562A2/pt not_active Application Discontinuation
- 2018-08-28 AR ARP180102432A patent/AR113103A1/es active IP Right Grant
- 2018-08-28 WO PCT/EP2018/073129 patent/WO2019043001A1/de not_active Ceased
- 2018-08-28 MX MX2020001984A patent/MX2020001984A/es unknown
- 2018-08-28 EP EP18756471.1A patent/EP3676407A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| MX2020001984A (es) | 2020-09-25 |
| BR112020003562A2 (pt) | 2020-09-01 |
| KR20200044002A (ko) | 2020-04-28 |
| AR113103A1 (es) | 2020-01-29 |
| CN111032886A (zh) | 2020-04-17 |
| WO2019043001A1 (de) | 2019-03-07 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: LANXESS DEUTSCHLAND GMBH |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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