Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J35/00—Catalysts, in general, characterised by their form or physical properties
  • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
  • B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional [3D] monoliths
  • B01J35/57—Honeycombs
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
  • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
  • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
  • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
  • F01N3/28—Construction of catalytic reactors
  • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
  • F01N3/2807—Metal other than sintered metal
  • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
  • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
  • F01N2330/00—Structure of catalyst support or particle filter
  • F01N2330/02—Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal
  • F01N2330/04—Methods of manufacturing
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
  • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T29/00—Metal working
  • Y10T29/49—Method of mechanical manufacture
  • Y10T29/49345—Catalytic device making
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/1234—Honeycomb, or with grain orientation or elongated elements in defined angular relationship in respective components [e.g., parallel, inter- secting, etc.]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24149—Honeycomb-like
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24744—Longitudinal or transverse tubular cavity or cell

Definitions

• Honeycomb body in particular catalyst carrier body, from a plurality of intertwined sheet stacks
• the present invention relates to a honeycomb body, in particular a catalyst carrier body, which is constructed from at least partially structured metal sheets and has many channels that are permeable to a fluid.
• a honeycomb body is known from EP-A-0 245 736, in which the individual sheet metal layers in the outer area run in an involute manner, which brings great advantages with regard to durability in the case of alternating thermal loads and other stresses.
• EP-A-0 245 737 a honeycomb body is also known, which consists of a stack of sheets intertwined in opposite directions, a design which also has great durability against thermal alternating loads.
• This form can indeed easy to produce, but it is not quite symmetrical in its' structure, which must be considered in individual Vietnameses intimide ⁇ and during further processing, and is not suitable in all cases for a flexible and cost-effective manufacturing of special sections and irregular cross-sectional shapes.
• EP-A-0 245 736 is symmetrical in its outer area, the design of the central area and a corresponding production are relatively complex.
• the object of the present invention is to create a honeycomb body which, in the case of regular cross-sectional shapes, is largely symmetrical, but is easy to manufacture, while at the same time the excellent properties with respect to thermal alternating loads and other stresses are to be retained.
• the basic structure of the honeycomb body should also include the cost-effective production of bodies with special cross sections, in particular Z allow irregular cross-sectional shapes.
• This object is achieved by a honeycomb body according to claim 1.
• This honeycomb body with a plurality of channels permeable to a fluid which is particularly suitable as a catalyst carrier body or for other applications in flowing media, consists of a plurality of at least partially structured sheets which are arranged in a jacket.
• alternately layered smooth and corrugated sheets are used for such honeycomb bodies, but the invention can also be applied in the same way to sheets with a different structure and also extends to these applications.
• obliquely or arrow-shaped corrugated sheets as are known from the prior art, can also be used, for example.
• a honeycomb body according to the invention consists of at least three stacks of sheets, at least three of which are folded by one fold line in the central region of the honeycomb body and, in the folded state, are wrapped in the same direction around one another and around the central region with the fold lines.
• Such a structure avoids almost all of the disadvantages that have arisen in previously known honeycomb bodies and combines many advantages.
• regular cross sections e.g. B. circle or regular polygon
• a very symmetrical structure can be realized and with a suitable choice of the number of stacks also achieve that all sheets can be of the same length and all stacks consist of the same number of sheets.
• the new structure limits the use of known, advantageous measures not to improve the properties of the honeycomb body, but sometimes even favors them. All known joining techniques, such as brazing, welding, sintering or the like, can also be used in the present structure. Form-fitting connections of the sheets to one another and / or to the jacket are also possible. If sensible, shapes can also be realized with an end face that is approximately conical or round-conical in longitudinal section, by so-called telescoping by pushing out the central area of such a honeycomb body. Overall, the present invention combines the advantages of the embodiments described in EP-A-0 245 737 and EP-A-0 245 738 in essential points with regard to the variability in production and with regard to behavior under thermal alternating loading.
• honeycomb body The basic structure of the honeycomb body and its properties are retained even if a stack running through the central region of the honeycomb body is not folded, but its ends are intertwined with the folded stacks. This one stack then takes on approximately the shape of an S, in the curves of which the fold lines of the other stacks lie.
• a honeycomb body according to the invention can consist of alternating layers of smooth and corrugated metal sheets, these metal sheets being able to be joined to one another and / or to the jacket at least on part of the lines of contact, preferably by brazing. Fastening the ends of the sheets to the jacket is sufficient for many applications.
• the honeycomb body can also be in one narrow circumferential area or in individual zones or in total on one or both end faces to a depth of a few millimeters.
• the present invention enables the filling of regular cross sections with structured metal sheets in a particularly simple manner.
• Many regular cross sections e.g. B. hexagons
• the length of a sheet is understood to mean not the original length in the case of structured sheets, but the length after the structure has been completed.
• regular shapes from stacks of sheets of the same length, they cannot always be folded in the middle.
• a lateral displacement of the individual sheets in each stack may be necessary, so that the stack has an approximately parallelogram cross-section before folding.
• the jacket is loaded uniformly over the entire circumference, so that it does not have to have its own stability against deformation. It is therefore possible in these cases to produce the jacket from very thin metal sheets, for example with a thickness of only 0.1 to 1.5 mm, preferably about 1 mm or less.
• a method for producing such honeycomb bodies is described. Thereafter, a plurality of stacks of a plurality of at least partially structured sheets are layered, each stack is folded by a crease line and moved simultaneously or subsequently with its folding edge to a central area. The Ends of the folded stacks are wrapped around each other in the same direction. B. can be done by rotating the central region and contracting a molded body surrounding the stack. Finally, the stacks so intertwined are pushed into a prefabricated jacket or surrounded with a jacket.
• Figure 1 shows a cross section through an inventive
• FIG. 2 is an illustration of the manufacturing process
• Figure 3 shows a honeycomb body according to the invention with hexagonal
• FIGS. 4 and 5 honeycomb bodies with irregular cross sections
• Figure 6 is a round made from four stacks
• FIGS. 7 and 8 honeycomb bodies with regular cross sections, such as those created by inflating a square or triangle,
• FIG. 9 shows a honeycomb body with the same cross section as in FIG.
• FIG. 1 shows in cross section a honeycomb body constructed from smooth 3 and corrugated 4 sheets, which is arranged in a jacket 1.
• the individual sheet-metal layers run approximately involute, while in its interior there are fold lines 2a, 2b, 2c, three in the present exemplary embodiment.
• a third of the sheet metal layers contained in the honeycomb body are folded around each of these fold lines 2a, 2b, 2c and then, in this folded state, are intertwined in the same direction.
• FIG. 2 The emergence of a honeycomb body according to the invention is illustrated schematically with the aid of FIG. 2.
• a plurality of sheet metal stacks 8a, 8b, 8c, of which only three are shown here, are each folded around a folding line 2a, 2b or 2c. Then, or preferably even simultaneously, the resulting folding edges 9a, 9b, 9c are moved towards a common central area 5, as indicated by the arrows 6. In their end position, in the central area 5, the individual sheet stacks 8a, 8b, 8c meet. As indicated by arrows 7, the ends of the folded stacks 8a, 8b, 8c can now be looped around each other in the same direction. This can be done by turning the central area, e.g. B.
• kink lines 2a, 2b, 2c can be formed by fork-like tools, which then also bring about the stacking by turning.
• FIG. 3 illustrates the manner in which a regular hexagon can advantageously be filled with sheet metal stacks.
• Arranged within the casing 31 are three stacks which are folded around the fold lines 32a, 32b, 32c.
• the number of stacks used to fill a regular polygon should be equal to or less than the number of corners.
• the position of the crease lines with respect to the corners can still be varied, it having proven advantageous to arrange the crease lines on even planar polygons on the connecting planes of opposite edges of the jacket.
• Figure 4 shows an irregular cross-sectional shape of a honeycomb body, which ; the shape of a snail shell reminds.
• the jacket 41 can be filled particularly advantageously if one of the three stacks, namely the one folded around the fold line 42a, has a lower height than the other two stacks folded about the fold lines 42b, 42c.
• the three kink lines 42a, 42b, 42c lie approximately in one plane.
• Figure 5 shows an even more irregular cross-sectional shape of the shell 51 and one of the ways to fill this shape by four stacks.
• the kink lines 52a, b, c, d are arranged irregularly in the central region of the honeycomb body, this arrangement being able to be optimized by calculation or systematic tests. It should be mentioned that the small empty spaces remaining in the drawings almost completely disappear during actual production, since the sheet metal stacks and sheet metal layers tend to fill such empty spaces by deformation.
• FIG. 6 shows a very symmetrical arrangement of a round jacket 61, which is filled with four stacks of sheets folded around the fold lines 62a, b, c, d.
• FIG. 7 shows a casing tube 71 in the form of an inflated square, which can also be easily divided by four Folding lines 72a, b, c, d can be folded sheet stacks.
• FIG. 8 shows a casing 81 with the shape of an inflated triangle, which is filled by three sheet stacks folded around the folding lines 82a, b, c.
• the kink lines 82a, b, c each lie with respect to the. Center line of the body on the opposite sides of each edge of the body. This arrangement is generally suitable for regular odd-numbered polygons and the resulting cross-sectional shapes resulting from swelling.
• FIG. 9 shows an example of how a non-folded stack 98 can be integrated in honeycomb bodies constructed in accordance with the invention.
• the casing 91 has the same shape as in FIG. 8, but is filled by four stacks 98 folded by the fold lines 92a, b, c, d and an unfolded stack 98. It can be seen that a non-folded stack 98 in such an arrangement could always be replaced by two folded stacks colliding with their folding edges in the central region. However, in the case of honeycomb bodies which are actually supposed to be produced from five or more stacks, two folded stacks can always be replaced by a stack which is twice as thick and not folded. This does not change the basic advantages of the structure, but is simply a question of manufacturing technology.
• the present invention is particularly suitable for thermally highly loaded catalyst carrier bodies in motor vehicles, but is not restricted to this field of application, since such honeycomb bodies are also used in other fields, for example the treatment of flowing fluids.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Organic Chemistry (AREA)
• Toxicology (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Health & Medical Sciences (AREA)
• Catalysts (AREA)
• Exhaust Gas After Treatment (AREA)
• Laminated Bodies (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6363515

Family Applications (1)

Country Status (9)

Cited By (44)

Families Citing this family (41)

Citations (2)

Family Cites Families (10)

• 1989
  • 1989-03-22 JP JP1503430A patent/JPH03502660A/ja active Granted
  • 1989-03-22 BR BR898907458A patent/BR8907458A/pt not_active IP Right Cessation
  • 1989-03-22 EP EP89903720A patent/EP0430945B1/de not_active Expired - Lifetime
  • 1989-03-22 DE DE8989903720T patent/DE58900964D1/de not_active Expired - Lifetime
  • 1989-03-22 KR KR1019900701063A patent/KR960012698B1/ko not_active Expired - Fee Related
  • 1989-03-22 WO PCT/EP1989/000311 patent/WO1990003220A1/de not_active Ceased
  • 1989-07-17 DE DE8908671U patent/DE8908671U1/de not_active Expired - Lifetime
  • 1989-09-22 US US07/410,954 patent/US5139844A/en not_active Expired - Lifetime
  • 1989-09-22 MX MX017648A patent/MX172188B/es unknown
• 1991
  • 1991-01-04 FI FI910054A patent/FI103359B/fi not_active IP Right Cessation
  • 1991-03-22 US US07/674,506 patent/US5105539A/en not_active Expired - Lifetime

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