Patents Assigned to Douglas Technical Limited
  • Patent number: 11499778
    Abstract: An apparatus and a method is provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 15, 2022
    Assignee: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert
  • Patent number: 11248845
    Abstract: An apparatus and a method is provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: February 15, 2022
    Assignee: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert
  • Patent number: 11079106
    Abstract: An apparatus and a method are provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 3, 2021
    Assignee: DOUGLAS TECHNICAL LIMITED
    Inventors: Günter Hensel, Wolfgang Seifert
  • Patent number: 10690409
    Abstract: A method for drying bulk goods, in particular wood fibers and/or wood chips, wherein the bulk goods is continuously dried in a dryer (1), in particular a drum dryer. The vapor-gas mixture flows through the drum dryer (1) in a dryer circuit and is indirectly heated via at least one heat exchanger (4) by a burner waste gas that is heated in at least one burner (5). The drying vapors are supplied to the at least one heat exchanger (4). Upstream, downstream and/or within the at least one heat exchanger (4), at least a partial flow of the drying vapors are branched off to be conducted into the burner (5). The remaining partial flow is conducted to the dryer (1) again. The partial flow of drying vapors to the burner (5) is driven by at least one regulable partial vapor fan (10).
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: June 23, 2020
    Assignee: Douglas Technical Limited
    Inventors: Zdenek Brancuzsky, Gunter Hensel, Karel Napravnik, Wolfgang Seifert
  • Publication number: 20200064068
    Abstract: An apparatus for drying bulk goods and a method are provided for continuously drying bulk goods. In particular, an apparatus and a method is provided for drying wood fibers.
    Type: Application
    Filed: June 6, 2017
    Publication date: February 27, 2020
    Applicant: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert
  • Patent number: 10551121
    Abstract: A method for drying bulk goods, in particular wood fibers and/or wood chips, wherein the bulk goods is continuously dried in a dryer (1), in particular a drum dryer. The vapor-gas mixture flows through the drum dryer (1) in a dryer circuit and is indirectly heated via at least one heat exchanger (4) by a burner waste gas that is heated in at least one burner (5). The drying vapors are supplied to the at least one heat exchanger (4). Upstream, downstream and/or within the at least one heat exchanger (4), at least a partial flow of the drying vapors are branched off to be conducted into the burner (5). The remaining partial flow is conducted to the dryer (1) again. The partial flow of drying vapors to the burner (5) is driven by at least one regulable partial vapor fan (10).
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: February 4, 2020
    Assignee: Douglas Technical Limited
    Inventors: Zdenek Brancuzsky, Günter Hensel, Karel Napravnik, Wolfgang Seifert
  • Publication number: 20200011528
    Abstract: An apparatus and a method are provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 9, 2020
    Applicant: Douglas Technical Limited
    Inventors: Günter HENSEL, Wolfgang SEITERT
  • Publication number: 20200011529
    Abstract: An apparatus and a method is provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 9, 2020
    Applicant: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert
  • Publication number: 20200011601
    Abstract: An apparatus and a method is provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 9, 2020
    Applicant: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert
  • Publication number: 20200011600
    Abstract: An apparatus and a method is provided for continuously drying bulk goods, in particular wood fibers and/or wood chips, in a dryer, wherein the drying vapors are led to a dryer circuit, in which the drying vapors are indirectly heated via a heat-exchanger and are conducted to the dryer again.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 9, 2020
    Applicant: Douglas Technical Limited
    Inventors: Günter Hensel, Wolfgang Seifert