WO2013009181A1 - Silage covering system and method for at least partly putting such a system into use - Google Patents
Silage covering system and method for at least partly putting such a system into use Download PDFInfo
- Publication number
- WO2013009181A1 WO2013009181A1 PCT/NL2012/050503 NL2012050503W WO2013009181A1 WO 2013009181 A1 WO2013009181 A1 WO 2013009181A1 NL 2012050503 W NL2012050503 W NL 2012050503W WO 2013009181 A1 WO2013009181 A1 WO 2013009181A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cover sheet
- hose
- silage
- hoses
- covering system
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/13—Coverings
Abstract
A silage covering system (1) according to the invention comprises a cover sheet (2) for covering piled up silage. The system (1) further comprises at least one hose (3, 7) retained by the cover sheet, which weights the cover sheet when the hose is filled with a substance, such as a liquid. The hose (3, 7) is detachably retained by the cover sheet.
Description
Title: Silage covering system and method for at least partly putting such a system into use
The present invention relates to a silage covering system comprising:
- a cover sheet for covering piled up silage, wherein the cover sheet, defined in a completely unrolled horizontal reference condition of the cover sheet and viewed in top plan view of this reference condition, has an elongated shape with an associated length and width in a length direction and width direction, respectively, of the cover sheet; and
- at least one hose retained by the cover sheet, which sheet can also be understood to mean a linkage of several hoses, which hose weights the cover sheet in the reference condition over at least a quarter of the length in the length direction when the hose is filled with a substance, such as a liquid.
The invention also relates to a method for at least partly putting such a silage covering system into use.
Here, silage is understood to mean ensiled or ensiling harvested product, intended to serve as cattle fodder. In making a silage pile, the harvested product is collected and driven into a pile. Generally, the silage pile is firmly pressed by a tractor or a shovel and covered with a cover sheet.
Preferably, the cover sheet is watertight and airtight to prevent rotting and fungoid growth. In some cases, the above-mentioned weighting or ballast hoses are used. These hoses serve for proper fixation of the cover sheet and for obtaining a good sealing action of the cover sheet.
A typical silage pile has, in top plan view, an elongated shape and in most cases has dimensions in the order of a few tens of meters in length, some ten meters in width and a few meters in height. Naturally, other dimensions are also possible. In some cases, concrete sidewalls are used with a silage pile, in which case a so-called clamp silo is involved.
In practice, silage is taken from the silage pile at one end of the silage pile. Depending on the amount of cattle to be fed, the silage pile is shortened, for instance once a week, from the respective end over a distance of a few meters in its length direction. To that end, the silage pile must be cleared of the cover sheet over the respective distance.
A silage covering system of the type initially indicated
hereinabove is known from, for instance, US2003/0172597A1. More particularly, the Figures 5, 6, and 7 of US2003/0172597A1 show a cover sheet 270 to which several hoses 272 are firmly attached. These hoses 272 can be filled with, for instance, water for weighting the cover sheet.
In practice, the hoses which are firmly attached to the cover sheet are welded to the cover sheet. For instance, the applicant of the present invention supplies cover sheets with hoses firmly welded thereto as part of silage covering systems.
The reason why the known hoses are firmly welded to the cover sheet, or, in some cases, even form an integral part of the cover sheet, is that for the entire lifespan of the cover sheet, usually in the order of ten to fifteen years, the hoses have to remain distributed over the cover sheet in a pre-conceived manner to guarantee a good fixation and sealing action of the cover sheet at all times. The necessity of firmly welding the hoses holds all the more because during its lifespan, the cover sheet with the hoses attached thereto frequently, and under relatively rough operating conditions, undergoes numerous operations, such as displacements of the cover sheet and winding of the cover sheet with the hoses attached thereto onto and off a reel. The cover sheet and the hoses being permanently exposed to varying weather conditions plays a role too. People involved in this field therefore find it necessary that the hoses be firmly welded to the cover sheet or, going further, that the hoses be integrated in the cover sheet. An example of this latter integration of hoses is shown in Figs. 8, 9, and 10 of the above-mentioned document US2003/0172597A1.
A drawback of the known silage covering systems is that the hoses tend to spring leaks due to wear and/or unintended contacts with farm vehicles such as tractors, shovels, telehandlers, etc., or other equipment, or external objects. When such a silage covering system is used with a clamp silo, for instance, relatively soon, there may occur wear of the hoses that lie against or close to the concrete sidewalls of the clamp silo. The fact is that upon displacement of the cover sheet, the hoses often graze along these sidewalls or they may unintentionally become wedged between external objects and these sidewalls. Repairing or replacing a hose that has sprung a leak can be labour intensive and/or rather expensive. Sometimes, the cover sheet has to be taken to a workshop, in which case the silage pile has to be covered at least temporarily with a replacement cover sheet.
An evident solution that is used for the above-mentioned leakage problems is preventing the hoses from springing leaks by designing the hoses to be extra sturdy and/or in materials or combinations of materials that are aimed at preventing the hoses from springing leaks. Sometimes, the more vulnerable hoses attached to the cover sheet, such as the hoses that lie against or near the concrete sidewalls of a clamp silo, are designed to be sturdier and/or designed in a better material than the relatively less vulnerable hoses attached to the cover sheet.
In practice, people involved in this field generally consider such known solutions to be sufficient and satisfactory. Nevertheless, according to the present invention, an alternative solution to the above-mentioned problems is proposed.
It is an object of the invention to provide at least an alternative solution which at least mitigates the adverse effects of the leakage of a ballast hose of the silage covering system and which, more generally, improves the durability of the cover sheet and/or the ballast hose(s).
To that end, a silage covering system of the type initially indicated above is characterized in that the hose is detachably retained by the cover sheet.
According to the invention, thus, a silage covering system according to the appended independent claim 1 is provided. The invention is further embodied in a method according to the appended independent claim 9. Specific embodiments of the invention are laid down in the dependent claims.
As, according to the invention, at least one of the at least one hose is detachably retained by the cover sheet, in the event a specific hose springs a leak, the respective leaking hose can be detached from the cover sheet and be replaced with another, non-leaking hose which is then, in turn, detachably applied to the cover sheet. Thus, the cover sheet with hoses can rapidly and effectively be made operational again, and the cover sheet does not have to be taken to a repair workshop. If the user himself keeps a number of spare hoses in stock, the intervention of a supplier is basically not directly required. A hose that has started leaking and has been replaced can be repaired at another, suitable moment by the user himself or by a specialised party.
In comparison with the known cover sheets to which the hoses are welded or in which the hoses are integrated, which, as explained above, is considered necessary by those concerned in this field, the invention offers still further advantages. For instance, the invention offers the possibility to replace the cover sheet of a specific silage covering system without replacing the ballast hoses. This results, in time, in a more durable and cost saving use of cover sheets and ballast hoses.
In principle, various detachable attachments are possible to arrange for the hose to be detachably retained by the cover sheet.
In a preferred embodiment, the covering hose comprises at least one loop-forming portion and the hose extends through at least one loop
passage of the at least one loop-forming portion. Such a loop-forming portion can be reliably fixed to the cover sheet or can be reliably manufactured integrally with the cover sheet. Also, such a loop-forming portion can reliably retain the hose in that the loop-forming portion retains the hose all around it, viewed in the circumferential direction of the hose. Furthermore, the loop-forming portion forms an additional protection wall for the hose against wear or springing a leak. Further, the axial moveability of the hose relative to the loop -forming portion offers the advantage that the hose can axially deflect relative to the loop-forming portion, should the hose be trapped between external objects. This possibility of axial deflection of the hose reduces wear of the hose and moreover contributes further to the lowering of the risk of the hose springing a leak.
In principle, the loop passage of the loop-forming portion can also be an internal channel of the cover sheet. In such a case, the loop-forming portion can for instance be manufactured integrally with the cover sheet and the hose can be brought into and out of the internal channel.
Preferably, the at least one loop-forming portion is a jutting portion of the cover sheet. Such a jutting loop-forming portion is simple and inexpensive to manufacture, for instance by welding the loop -forming portion to the cover sheet. Various types of such a jutting loop-forming portion can be used, for instance, in the form of a long hem or sleeve, but also, for instance, in the form of several short loops which, in the length direction of the hose, are spaced apart some distance.
With regard to the detachability of the hose, the loop-forming portion can, in principle, be configured in various manners. For instance, the loop -forming portion can be configured such that a user can interrupt its loop-shape and reclose it, viewed in the circumferential direction of the hose. In interrupted condition, the user can then take the hose sideways from the interrupted loop-form and place it sideways into the interrupted loop-form again.
It is further preferred that the hose can be detached from the cover sheet by sliding the hose in its longitudinal direction out of the loop- forming portion. This solution can be realised in a reliable and inexpensive manner.
In a further preferred embodiment, the silage covering system comprises several ballast hoses of the cover sheet, retained by the cover sheet, the longitudinal directions of which extend in the length direction of the cover sheet and which are mutually spaced apart in the width direction of the cover sheet, while at least the two outermost ones, viewed in the width direction, of the several ballast hoses are specimens of the detachably retained hose. As a result, the above-mentioned advantages of the invention are at least obtained for the ballast hoses of the system that are most sensitive to wear and damage.
In a still further preferred embodiment, the cover sheet is elastic over at least a part of the width direction in at least the width direction of the cover sheet. As a result, the cover sheet, during use on a silage pile, can stretch in the width direction to always offer a proper covering function with various heights of the silage pile and/or with various convex shapes of the top of the silage pile in the width direction of the silage pile. If in this preferred embodiment the silage covering system is provided with several ballast hoses of the cover sheet, retained by the cover sheet, the longitudinal directions of which extend in the length direction of the cover sheet and which are mutually spaced apart in the width direction of the cover sheet, these ballast hoses can automatically provide the above-mentioned stretch of the cover sheet in the width direction. In case of a clamp silo with concrete sidewalls, for instance, the top of the silage pile often has, in its width direction, a convex shape, the apex of which is located higher than the tops of the concrete sidewalls. In that case, the weights of especially the ballast hoses lying on both longitudinal sides of the clamp silo against or near the concrete sidewalls contribute to the stretching of the cover sheet in
the width direction. The latter ballast hoses can then stretch the cover sheet, for instance in the width direction of the cover sheet, so far that the ballast hoses come to lie against the concrete sidewalls. It is generally suitable if the cover sheet in use on a silage pile can stretch in the width direction to an extent in the order of a few tens of percents, for instance approximately 20% or approximately 30%. If, for instance, a stretch of approximately 30% is possible, a cover sheet which has a width of 10 meters in relaxed condition can stretch in the width direction to a width of approximately 13 meters.
Furthermore, a silage covering system according to the invention can comprise a liquid displacing device that is operable, in a condition coupled to the at least one hose, for feeding liquid to the at least one hose and/or discharging liquid from the at least one hose.
Furthermore, a silage covering system according to the invention can comprise a reeling device which reeling device comprises a reel and is operable for winding the cover sheet onto and off the reel.
In the following, the invention is further elucidated with reference to the schematic figures in the accompanying drawing.
Fig. 1 shows an example of an embodiment of a silage covering system according to the invention in a top plan view of the cover sheet of the silage covering system in a fully unrolled horizontal reference condition of the cover sheet.
Fig. 2 shows a partial cross section of the silage covering system shown in Fig. 1 in a view according to the arrows II shown in Fig. 1.
Fig. 3 shows an enlargement of the right hand part of Fig. 2.
The Figures show a silage covering system 1 according to the invention. The system 1 comprises a flexible cover sheet 2 for covering piled-up silage. In the reference condition shown in Fig. 1, the cover sheet has an elongated shape, with the length direction and the width direction of the cover sheet being indicated by the letters L and W. For use on a typical
silage pile, the cover sheet 2 usually has dimensions in the order of some tens of meters in length in the length direction L, and about ten meters in width in the width direction W. Naturally, other lengths and widths and other ratios of lengths and widths of the cover sheet are also possible.
The system 1 further comprises a number of flexible hoses retained by the cover sheet 2, viz., hoses 3, 4, 5, 6, and 7, which weight the cover sheet in the reference condition when the hoses are filled with a liquid, such as, for instance, (salt) water. Instead of with a liquid, however, the hoses can also, in principle, be filled with another substance, such as a gel, sand, or another suitable substance for weighting the cover sheet.
In the example shown, the hoses 4, 5, and 6 are welded to the cover sheet 2. The other two hoses, i.e., the two outermost hoses 3 and 7, viewed in the width direction, are detachably retained by the cover sheet 2. More particularly, the cover sheet 2 comprises two jutting loop-forming portions in the form of the two depicted flexible long sleeves 8 and 9. The hose 3 extends through a loop passage of the sleeve 8 and the hose 7 extends through a loop passage of the sleeve 9. The latter loop passage of the sleeve 9 is indicated in Fig. 3 with reference numeral 10. In the example shown, the sleeves 8 and 9 are each welded to the cover sheet 2.
The hose 3 can be detached from the cover sheet 2 by sliding the hose 3 in its longitudinal direction out of the sleeve 8. Likewise, the hose 7 can be detached from the cover sheet 2 by sliding the hose 7 in its longitudinal direction out of the sleeve 9.
The hose 3 and the hose 7 each weight the cover sheet in the reference condition over at least a quarter of the length in the length direction L when the respective hose is filled with a substance. However, according to the invention, it is preferred that a thus-weighting hose weights the cover sheet over a largest possible part of the length in the length direction L when the respective hose is filled with a substance, hence preferably over at least half the length in the length direction L, more
preferably over at least three quarters of the length in the length direction L, and still more preferably over the entire length in the length direction L. This last is the case in the example shown for the hoses 3 and 7.
For the purpose of the (first) putting into use of the silage covering system 1, the hoses 3 and 7 must be brought into their detachable conditions retained by the cover sheet, which conditions are shown in Figs. 1-3. These conditions can be obtained by sliding the respective hoses 3 and 7 in their longitudinal directions into the respective sleeves 8 and 9.
With the system 1 in use, in the example, the ends of the hoses 3, 4, 5, 6, and 7 are each sealed off, adjacent one end of the cover sheet 2 (here taken to be the left-hand end in Fig. 1) by a suitable sealing element. With these ends sealed off, substance present in the hoses therefore cannot escape from the hoses. In this example, the opposite ends of the hoses 3, 4, 5, 6, and 7 adjacent the other end of the cover sheet (so, here taken to be the right-hand end in Fig. 1) are then each connected, by means of a suitable coupling piece, to an additional pipe structure which connects the hoses 3, 4, 5, 6, and 7 to a liquid displacing apparatus which is operable for feeding a liquid to the hoses 3, 4, 5, 6, and 7 and/or discharging a liquid therefrom. Such an additional pipe structure and such a liquid displacement apparatus are known per se and are therefore, for the simplicity of presentation, not shown in the Figures.
Furthermore, the system 1 may be provided with a reeling device which comprises a reel and which is operable for winding the cover sheet 2 on the reel and unwinding it from the reel. The longitudinal direction of this reel extends in the width direction W of the cover sheet 2. Such a reeling device and such a reel are known per se and are therefore, for the simplicity of presentation, not shown in the Figures.
With such a system 1 in use, the left-hand end of the cover sheet 2 shown in Fig. 1, where the hose ends are hence sealed off, is situated at that end of the silage pile covered by the cover sheet where in practice ensilage is
regularly taken from the silage pile. At that end of the silage pile, the above- mentioned reel is located. The right-hand end of the cover sheet 2 shown in Fig. 1, where the hose ends are hence connected, in use, to the above- mentioned additional pipe structure, is then situated at the opposite end of the silage pile.
If the cover sheet 2 is to be provided on a silage pile for the first time, the cover sheet 2 can be unwound from the reel, during which unwinding the reel moves above the silage pile from the latter, opposite end of the silage pile to that end of the silage pile where in practice, for instance once a week, silage is taken from the silage pile. The displacement of the reel can for instance be carried out with the aid of a tractor, telehandler, or the like, but can also be carried out by, for instance, a different moving mechanism, while the reel is wheelable (if desired, in a driven manner) over for instance the top edges of the clamp silo walls. During unwinding from the reel, the hoses 3,4, 5, 6, and 7, or at least the parts of these hoses still wound on the reel, are usually not, or hardly so, filled with liquid. When the cover sheet has been unwound to the desired length, the hoses can be filled to a desired degree of filling with liquid from the above-mentioned additional pipe structure. Upon rewinding of the cover sheet on the reel, liquid can be discharged again, partly under the influence of the external pressure on the hoses caused by winding, from the hoses to the above- mentioned additional pipe structure.
It is noted that the above-mentioned examples of embodiments do not limit the invention and that within the scope of the appended claims, various alternatives are possible. For instance, diverse variations are possible regarding shapes, dimensions and materials of the cover sheet and of the ballast hoses. Also, more or fewer hoses may be used than in the example shown, and the hoses may also extend partly or completely in the width direction of the cover sheet, or extend in various other directions with various possible components in the length direction and the width direction
of the cover sheet. In the sense of the invention, a single hose of the silage covering system can also be understood to mean a linkage of several hoses. When the above-mentioned at least one loop-forming portion is used, such a loop-forming portion may also be of fibre-reinforced or otherwise reinforced or strengthened design. When a cover sheet is used which is elastic over at least a part of the width direction in at least the width direction of the cover sheet, and the silage covering system is provided with several ballast hoses of the cover sheet, retained by the cover sheet, the longitudinal directions of which extend in the length direction of the cover sheet and which are mutually spaced apart in the width direction of the cover sheet, these ballast hoses and/or the associated loop-forming portions can be designed such that, in their longitudinal directions, they are not, or considerably less, elastic than the cover sheet. As a result, the cover sheet, if manufactured from a material which has the same elastic properties in the length direction and in the width direction of the cover sheet, will not substantially elastically deform in its length direction when being wound on a reel and being unwound from a reel, whereas the cover sheet can substantially elastically deform in its width direction. These and similar alternatives are understood to fall within the framework of the invention as defined in the appended claims.
Claims
1. A silage covering system comprising:
- a cover sheet (2) for covering piled up silage, wherein the cover sheet, defined in a completely unrolled horizontal reference condition of the cover sheet and viewed in top plan view of this reference condition, has an elongated shape with an associated length and width in a length direction (L) and width direction (W). respectively, of the cover sheet; and
- at least one hose (3, 4, 5, 6, 7) retained by the cover sheet, which hose can also be understood to mean a linkage of several hoses, which hose weights the cover sheet in said reference condition over at least a quarter of said length in said length direction (L) when the hose is filled with a substance, such as a liquid;
characterized in that the hose (3, 7) is detachably retained by the cover sheet (2).
2. A silage covering system according to claim 1, wherein the cover sheet (2) comprises at least one loop-forming portion (8, 9) and wherein the hose (3, 7) extends through at least one loop passage (10) of the at least one loo -forming portion.
3. A silage covering system according to claim 2, wherein the at least one loop-forming portion (8, 9) is a jutting part of the cover sheet (2).
4. A silage covering system according to claim 2 or 3, wherein the hose (3, 7) can be detached from the cover sheet (2) by sliding the hose in its longitudinal direction out of the loop -forming portion (8, 9).
5. A silage covering system according to any one of the preceding claims, comprising several ballast hoses (3,4, 5, 6, 7) of the cover sheet, retained by the cover sheet (2), the longitudinal directions of which extend in said length direction (L) of the cover sheet and which are mutually spaced apart in said width direction (W) of the cover sheet, wherein at least the two outermost (3, 7), viewed in said width direction, ones of said several ballast hoses are specimens of said detachably retained hose.
6. A silage covering system according to any one of the preceding claims, wherein the cover sheet (2) over at least a part of the width direction (W) is elastic in at least the width direction (W) of the cover sheet (2).
7. A silage covering system according to any one of the preceding claims, further comprising a liquid displacing device which is operable, in a condition coupled to the at least one hose (3, 4, 5, 6, 7), for feeding a liquid to the at least one hose and /or discharging a liquid from the at least one hose.
8. A silage covering system according to any one of the preceding claims, further comprising a reeling device, comprising a reel, which reeling device is operable for winding the cover sheet (2) onto the reel and unwinding it from the reel.
9. A method for at least partly putting into use a silage covering system (1) according to any one of the preceding claims, wherein said detachably retained hose (3, 7), from a condition in which said detachably retained hose is not retained by the cover sheet (2), is brought into its condition detachably retained by the cover sheet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2007097 | 2011-07-13 | ||
| NL2007097A NL2007097C2 (en) | 2011-07-13 | 2011-07-13 | PIT FOOD COVER SYSTEM AND METHOD FOR AT LEAST PARTING OF USE OF SUCH SYSTEM. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013009181A1 true WO2013009181A1 (en) | 2013-01-17 |
Family
ID=46639655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/NL2012/050503 WO2013009181A1 (en) | 2011-07-13 | 2012-07-13 | Silage covering system and method for at least partly putting such a system into use |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL2007097C2 (en) |
| WO (1) | WO2013009181A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10351777B2 (en) | 2013-03-15 | 2019-07-16 | All Power Labs, Inc. | Simultaneous pyrolysis and communition for fuel flexible gasification and pyrolysis |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1011643C1 (en) * | 1999-03-22 | 1999-05-31 | Hurk Leo Johannes H A M Van Den | Protective cover filled with liquid, preferably used to protect storage sites of animal feed, especially grass or corn |
| US20030172597A1 (en) | 2002-03-12 | 2003-09-18 | Gary Folkema | Bunker sealing system |
| DE102004040404A1 (en) * | 2004-08-19 | 2006-02-23 | Josef Strasser | Silo cover has at least longitudinal sides provided with fillable cavity in form of tube whereby filling has density of preferably more than 1.0 at temperature of 20 degrees C |
| EP1889535A1 (en) * | 2006-08-16 | 2008-02-20 | Bokano VOF | System for bringing a cover over, either removing it from silage present in a silo |
| DE202009013810U1 (en) * | 2009-10-10 | 2010-02-18 | Lensing, Michael | Flexible fillable hollow body for covering silo heaps |
| WO2010062324A2 (en) * | 2008-10-28 | 2010-06-03 | Hydro Tarp, Llc | Protective tarp with plural removable anchor tanks |
-
2011
- 2011-07-13 NL NL2007097A patent/NL2007097C2/en active
-
2012
- 2012-07-13 WO PCT/NL2012/050503 patent/WO2013009181A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1011643C1 (en) * | 1999-03-22 | 1999-05-31 | Hurk Leo Johannes H A M Van Den | Protective cover filled with liquid, preferably used to protect storage sites of animal feed, especially grass or corn |
| US20030172597A1 (en) | 2002-03-12 | 2003-09-18 | Gary Folkema | Bunker sealing system |
| DE102004040404A1 (en) * | 2004-08-19 | 2006-02-23 | Josef Strasser | Silo cover has at least longitudinal sides provided with fillable cavity in form of tube whereby filling has density of preferably more than 1.0 at temperature of 20 degrees C |
| EP1889535A1 (en) * | 2006-08-16 | 2008-02-20 | Bokano VOF | System for bringing a cover over, either removing it from silage present in a silo |
| WO2010062324A2 (en) * | 2008-10-28 | 2010-06-03 | Hydro Tarp, Llc | Protective tarp with plural removable anchor tanks |
| DE202009013810U1 (en) * | 2009-10-10 | 2010-02-18 | Lensing, Michael | Flexible fillable hollow body for covering silo heaps |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10351777B2 (en) | 2013-03-15 | 2019-07-16 | All Power Labs, Inc. | Simultaneous pyrolysis and communition for fuel flexible gasification and pyrolysis |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2007097C2 (en) | 2013-01-15 |
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