Patents by Inventor Anders LÖFSTRÖM

Anders LÖFSTRÖM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11946090
    Abstract: According to the present invention, there is provided a treatment process system for biomass material and methods for such system. The system comprises a first dewatering stage arranged to receive biomass material, to remove liquid from the biomass material, and to feed the biomass material forward in the process. Further, the system includes a water treatment stage arranged to collect the removed liquid and an addition stage located downstream said dewatering stage and operatively coupled to the first dewatering stage. The addition stage is arranged to receive the de-watered biomass material, wherein the addition stage includes inlets for adding acid containing solution into the addition stage. A reactor stage arranged to receive the biomass material treated in the addition stage and to perform a pre-hydrolysis process to the biomass material. A filtrate feeding arrangement is arranged to feed liquid from the filtrate tank to the reactor stage.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: April 2, 2024
    Assignee: VALMET AB
    Inventors: Örjan Ahlgren, Johan Carlsson, Anders Löfström, Patrik Pettersson
  • Patent number: 11186949
    Abstract: The invention relates to a method for impregnating biomass (10). In a step (S100) of the method, a reactor unit (11) is fed with biomass (10) by means of a plug screw (12). In another step (S200), the reactor unit (11) is at least partially filled up to a predetermined fill level (13) with a reactant (18), such that a reaction between the fed biomass (10) and the reactant (18) takes place in order to obtain an impregnated biomass. In another step (S300), the impregnated biomass (10) is discharged from the reactor unit (11) for further processing (S300). The invention further relates to a device (1) for impregnating biomass (10).
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 30, 2021
    Assignee: Valmet AB
    Inventors: Andreas Averheim, Per Grundström, Anders Löfström
  • Publication number: 20210310029
    Abstract: According to the present invention, there is provided a treatment process system for biomass material and methods for h such system. The system comprises a first dewatering stage arranged to receive biomass material, to remove liquid from the biomass material, and to feed the biomass material forward in the process. Further, the system includes a water treatment stage arranged to collect the removed liquid and an addition stage located downstream said dewatering stage and operatively coupled to the first dewatering stage. The addition stage is arranged to receive the de-watered biomass material, wherein the addition stage includes inlets for adding acid containing solution into the addition stage. A reactor stage arranged to receive the biomass material treated in the addition stage and to perform a pre-hydrolysis process to the biomass material. A filtrate feeding arrangement is arranged to feed liquid from the filtrate tank to the reactor stage.
    Type: Application
    Filed: May 29, 2019
    Publication date: October 7, 2021
    Applicant: VALMET AB
    Inventors: Örjan AHLGREN, Johan CARLSSON, Anders LÖFSTRÖM, Patrik PETTERSSON
  • Publication number: 20190360150
    Abstract: The invention relates to a method for impregnating biomass (10). In a step (S100) of the method, a reactor unit (11) is fed with biomass (10) by means of a plug screw (12). In another step (S200), the reactor unit (11) is at least partially filled up to a predetermined fill level (13) with a reactant (18), such that a reaction between the fed biomass (10) and the reactant (18) takes place in order to obtain an impregnated biomass. In another step (S300), the impregnated biomass (10) is discharged from the reactor unit (11) for further processing (S300). The invention further relates to a device (1) for impregnating biomass (10).
    Type: Application
    Filed: December 7, 2017
    Publication date: November 28, 2019
    Inventors: Andreas AVERHEIM, Per GRUNDSTRÖM, Anders LÖFSTRÖM