Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1981-01-15
1984-08-21
Tapolcai, William E.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 34, 98 57, 236 49, F26B 500
Patent
active
044662017
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a method of storing organic fibrous material in a stack, barn or the like. The invention also relates to an arrangement for carrying out this method, comprising a pipe which is perforated over at least part of its length and is connected via valves to the pressure side of a fan for blowing air into the stack, and a control unit which actuates the valves, connected to a temperature indicator for monitoring the temperature of the material in the stack, this unit being designed to control the blowing in of air into the stack so that the temperature of the material lies within a predetermined temperature range.
During recent years considerable progress has been made in the field of tree and timber handling. To ensure the best use is made of the raw fibrous material, methods and machines for tree-felling, transportation and handling of whole tree trunks, branches and boughs, together with the excavation of the root systems, have been proposed. It has thus been possible to achieve a high level of exploitation of the raw timber in sawmills and pulp factories.
As for the question of exploiting the fibrous waste from tree-felling to produce energy, development has not advanced so far. Research has shown that only 8% of Swedish timber terrain is of such a nature that it is necessary to leave the timber waste behind. Since leaving behind timber waste such as stumps, branches and twigs results in an increased risk of damaging insects, it is important to remove waste timber. It can be shown that the energy content of timber waste is so high that with rationalised transportation and storage methods profitable exploitation of the timber waste can be achieved.
The aim of the present invention is to provide a method and an arrangement for storing fibrous material in a stack, this storage being effected in such a way that the heat content of the material is increased as the thermal energy released during storage is used, and this is made possible due to the fact that the storage is carried out as revealed in the characteristics in the attached Patent Claims.
The invention will be explained further in the following with reference to the attached Drawing, in which FIG. 1 shows in the form of a block diagram an arrangement which operates in the way proposed by the invention. FIG. 2 shows schematically a preferred embodiment of a barn for storing organic fibrous material. FIG. 3a shows in perspective how, according to the invention, perforated pipes are arranged vertically for blowing air into the stack and for sucking out warmed up and moist air. FIG. 3b is a detail from FIG. 3a, and shows how the perforated pipes may be fixed in the floor of the barn. FIG. 4 is a cross-section through the barn shown in FIG. 2. FIG. 5 shows an alternative embodiment of an arrangement according to the invention. In the Drawing, parts with the same or similar functions have been given the same reference numerals.
In FIG. 1, 1 is a stack which contains organic fibrous material such as chips, bark and/or so-called organic industrial waste, for example. The stack is assumed to be lying in a well-insulated chamber of the kind which will be described in more detail in connection with FIGS. 2-4. According to the invention, air is blown into the stack at a number of levels depending on the height of the stack, and at each level, at a number of points preferably distributed evenly over the cross-section of the stack. This is accomplished by means of a plurality of pipes 2 which are disposed vertically and are perforated over at least part of their length and are preferably divided up in the longitudinal direction into chambers 3, 4, 5 which are separated from each other. According to the invention, the air is sucked out from the said levels by means of vertically arranged perforated pipes 6 of the same type as the pipes 2, arranged at a distance from the latter. The pipes 6 are also divided up into chambers 7, 8, 9. At each of the said levels the pipes 6 are equipped with a temperature indicator 10 which is connected to
REFERENCES:
patent: 722118 (1903-03-01), Liles
patent: 1833397 (1931-11-01), Hagen
patent: 1987903 (1935-01-01), Hoodry
patent: 2044370 (1936-06-01), Shodron
patent: 2903955 (1959-09-01), Werner, Jr.
patent: 4061267 (1977-12-01), Lof
patent: 4184856 (1980-01-01), Thoren
patent: 4238890 (1980-12-01), Curtis et al.
patent: 4270612 (1981-06-01), Larsson
patent: 4288241 (1981-09-01), Shelef
LandOfFree
Method and an arrangement for storing organic fibrous material i does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and an arrangement for storing organic fibrous material i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an arrangement for storing organic fibrous material i will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1936168