EP1091184A1 - Vorrichtung zum Trocknen von durchlaufenden Bahnen - Google Patents

Vorrichtung zum Trocknen von durchlaufenden Bahnen Download PDF

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Publication number
EP1091184A1
EP1091184A1 EP00120505A EP00120505A EP1091184A1 EP 1091184 A1 EP1091184 A1 EP 1091184A1 EP 00120505 A EP00120505 A EP 00120505A EP 00120505 A EP00120505 A EP 00120505A EP 1091184 A1 EP1091184 A1 EP 1091184A1
Authority
EP
European Patent Office
Prior art keywords
chamber
catalyst
treatment gas
boxes
gas
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Withdrawn
Application number
EP00120505A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jürgen Haupt
Wilhelm Ernenputsch
Ernst Klas
Udo Unger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vits Maschinenbau GmbH
Original Assignee
Vits Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vits Maschinenbau GmbH filed Critical Vits Maschinenbau GmbH
Publication of EP1091184A1 publication Critical patent/EP1091184A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure
    • F26B23/024—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure by means of catalytic oxidation

Definitions

  • the invention relates to a device for treatment, in particular for drying, of continuous webs coated with solvent-containing substance, are printed or impregnated by inflating a hot treatment gas, according to the preamble of claim 1.
  • the invention is based on a device known from DE 197 13 529 A1 has become.
  • this device there is an exhaust fan in the chamber arranged with which a part of the circulating treatment gas is sucked off.
  • Part of the extracted treatment gas is a waste gas Afterburner supplied.
  • Another part is branched off and one inside arranged in the chamber, shielded from the atmosphere in the chamber Burner unit fed, which flows through the treatment gas for a sufficient residence time on one for the complete combustion of the volatile Solvent maintains sufficient temperature level before returning it as a heated gas is returned to the cycle.
  • the The amount of exhaust gas supplied to the afterburner is reduced.
  • the fuel consumption the afterburner is reduced.
  • the burning of solvents in The heat remaining in the shielded burner is used for the dryer.
  • DE-AS 12 99 667 shows a dryer in which the circulated Treatment gas branched off a partial stream and via a separate, outside the Chamber arranged catalytic combustion device is passed. The through Catalytic combustion cleaned and heated gas flow is complete again returned to the chamber. The chamber is with a separate exhaust pipe Mistake.
  • the invention has for its object a device according to the preamble of claim 1 to create, which compared to the prior art special simplicity.
  • a chamber 1 is enclosed on all sides by walls opposite sides end walls 2, 3, each with a slot 4, 5 for one treating continuous path are provided.
  • the blow boxes 7, 8 are finger-like trained, that is, their cross-sectional dimensions are small compared to their length. They are transverse to the direction of passage symbolized by arrow 9 aligned and extend essentially over the entire working width, which is limited by the length of the slots 4, 5. Between two neighboring ones Blow boxes 7, 8 there is a free space, the width of which approximately with the Width of a blow box.
  • the blow boxes are arranged so that a lower blow box 7 is opposite an upper blow box 8.
  • the Blow boxes 7, 8 have a rectangular cross section and are in a known manner on its side facing the passage with blowing openings in the form of Provide slots or rows of holes.
  • the blow holes are not in the drawing visible. They are preferably designed as a floating nozzle system.
  • the lower blow boxes 7 and the upper blow boxes 8 each have a radial fan 10, 11 assigned with a horizontal axis.
  • the two radial fans 10, 11 are each surrounded by a housing 12, 13.
  • the lower blow boxes 7 are connected, so that Radial blower 10 communicates with the blow boxes 7 on the pressure side.
  • Suction side it is connected to the interior of chamber 1 via a suction opening 15.
  • the radial blower 11 is on the pressure side with the blow boxes 8 and on the suction side via a suction opening 16 also with the interior of the chamber 1 in connection.
  • an air box 17 In front of the suction opening 15 there is an air box 17 with a rectangular cross section arranged, which extends approximately over the entire width of the chamber 1. Its upper boundary wall 18 is impermeable. For example, it consists of Sheet. The same applies to the end wall opposite the suction opening 15 19.
  • the two side walls are - at least in some areas - as Catalyst units 20, 21 formed. They essentially consist of one flat catalyst carrier on which the actual catalyst material is applied has been.
  • the catalyst carrier has a gas-permeable structure and consists of Example from a wire mesh mat, preferably from several layers superimposed wire mesh mats.
  • a Gas burner 22 for heating chamber 1.
  • the chamber 1 is through an exhaust pipe 24 via a fan 25 and Heat exchanger 26 connected to a thermal afterburning chamber 27. From the afterburning chamber 27 goes a clean gas line 28 for the Solvent vapor freed exhaust gas from the heat exchanger 26 to the outside is led.
  • the parts designated with the reference numerals 24 to 28 can also - deviating from Figure 1- be integrated into the chamber.
  • a web 6 runs through, for example a metal strip painted on both sides, the chamber 1 in the direction of arrow 9.
  • hot treatment gas which from the radial fans 10, 11 pressed into the blow boxes 7, 8 and out of them Blow openings are inflated on both sides of the web 6, it is dried and free floating led.
  • the hot treatment gas After the hot treatment gas has touched the web 6 and has thereby been cooled, it flows through the between the blow boxes 7, 8 existing gaps in the direction of the air boxes 17, 23 from. It flows through the gas-permeable catalyst units 20, 21.
  • the temperature of the Treatment gas at this point is between 250 ° and 300 ° Celsius. she lies above the light-off temperature of the selected one Catalyst material.
  • the gas circuit just described in chamber 1 is an open circuit in in the sense that an exhaust gas stream is sucked out of the circuit with the fan 25 becomes.
  • the exhaust gas is preheated to about 500 ° in the heat exchanger 26. Then it is in the gas-heated afterburning chamber 27 to a Brought temperature of about 750 ° Celsius.
  • the exhaust gas contained solvent vapors burned.
  • the fan 25 produces in the chamber 1 a negative pressure, so that through the slots 4, 5, optionally also through separate openings, not shown in the drawing, air is sucked in.
  • the Chamber atmosphere therefore always has that for catalytic oxidation required oxygen content.
  • Excess clean gas is in the Heat exchanger 26 used for preheating the exhaust gas and at about 350 ° Celsius cooled down. At this temperature it gets into the atmosphere or becomes fed to another heat exchanger to use the residual heat.
  • FIGS. 3 to 6 which are already shown in Figure 1 or Figure 2 occur, they denote essentially the same Parts as in Figures 1 and 2.
  • the air boxes have ⁇ different than in Figure 1 and Figure 2- wall surfaces made of perforated material without a catalytically active coating.
  • catalyst units 32 arranged at a distance in front of the suction openings 15, 16. They have the shape of circular discs, the diameter of which is about the diameter of the Intake openings 15, 16 corresponds.
  • the fill Catalyst units 32 do not fully cover the return flow cross section. Therefore, the Only partial flows flow through catalyst units 32.
  • Other partial flows flow - as illustrated in FIG. 6 by indicated streamlines - around the Catalyst units 32 around and do not come in with catalyst material Contact. By moving the catalyst unit 32 in the transverse direction ⁇ as symbolized by a double arrow - the quantitative relationships between the partial flows vary.
  • Figure 7 illustrates a cassette-like catalyst unit consisting of a rectangular frame 33 made of metal profile and a total of three superimposed Wire mesh mats 34 attached to the frame 33 at their edges are attached.
  • the invention is particularly advantageous in existing drying plants can be used without the need for major modifications. It’s not uncommon that the production capacity of a drying plant by the capacity of the Exhaust gas cleaning system, for example a thermal afterburner, is limited. In such cases, the installation of Catalyst units in the drying chamber increased production output without increasing the amount of exhaust gas. In other cases it is possible without changing the production output the solvent concentration in the drying chamber and thereby increase the risk of explosion reduce.
EP00120505A 1999-10-06 2000-09-20 Vorrichtung zum Trocknen von durchlaufenden Bahnen Withdrawn EP1091184A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19948012 1999-10-06
DE1999148012 DE19948012A1 (de) 1999-10-06 1999-10-06 Vorrichtung zum Trocknen von durchlaufenden Bahnen

Publications (1)

Publication Number Publication Date
EP1091184A1 true EP1091184A1 (de) 2001-04-11

Family

ID=7924614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120505A Withdrawn EP1091184A1 (de) 1999-10-06 2000-09-20 Vorrichtung zum Trocknen von durchlaufenden Bahnen

Country Status (2)

Country Link
EP (1) EP1091184A1 (un)
DE (1) DE19948012A1 (un)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113172999A (zh) * 2021-05-13 2021-07-27 峨眉山佳洁纸制品有限责任公司 一种成品包装用纸制品旋转印刷机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658742A (en) * 1950-01-09 1953-11-10 Harold R Suter Catalytic fume incineration
DE1910974U (de) * 1964-12-18 1965-02-25 J H Benecke Fa Trocken- oder gelierkanal.
DE1299667B (de) 1965-01-20 1969-07-24 Trockentechnik Kurt Brueckner Einrichtung zur thermischen Behandlung einer bewegten flaechenfoermigen Warenbahn
EP0127697A2 (en) * 1983-06-02 1984-12-12 Wakayama Iron Works, Ltd. Apparatus for clarifying and circulating hot air for heat-treating textile fabrics
DE19713529A1 (de) 1997-04-01 1998-10-08 Heidelberger Druckmasch Ag Trockner für eine Materialbahn mit Abgasezirkulation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658742A (en) * 1950-01-09 1953-11-10 Harold R Suter Catalytic fume incineration
DE1910974U (de) * 1964-12-18 1965-02-25 J H Benecke Fa Trocken- oder gelierkanal.
DE1299667B (de) 1965-01-20 1969-07-24 Trockentechnik Kurt Brueckner Einrichtung zur thermischen Behandlung einer bewegten flaechenfoermigen Warenbahn
EP0127697A2 (en) * 1983-06-02 1984-12-12 Wakayama Iron Works, Ltd. Apparatus for clarifying and circulating hot air for heat-treating textile fabrics
DE19713529A1 (de) 1997-04-01 1998-10-08 Heidelberger Druckmasch Ag Trockner für eine Materialbahn mit Abgasezirkulation

Also Published As

Publication number Publication date
DE19948012A1 (de) 2001-05-03

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