US 12,098,505 B2Granted

System for treatment of a biomass material

AssigneeValmet Corporation

InventorsOlof Melander, Patrik Pettersson, Johan Carlsson

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Abstract

A system for treatment of a biomass material and a method for transporting biomass material, said system comprising: —a first vessel (3) in which said biomass material is treated at a first pressure;—a second vessel (5) in which said biomass material is collected at a second pressure which is lower than the first pressure; and—a transporting pipe (7) connecting an outlet (9) of the first vessel (3) with an inlet (11) of the second vessel (5) for transporting the biomass material from the first vessel to the second vessel, wherein said transporting pipe (7) comprises at least one restriction (13) for control of the flow in the transporting pipe and hereby providing a pressure drop to the transported biomass material, wherein at least one of said at least one restriction (13) is provided somewhere in the second half of the length of the transporting pipe (7) starting from the first vessel (3) and ending at the second vessel (5).

Claims12

Dependent claims

A system for treatment of a biomass material, said system comprising:

a first vessel configured to treat the biomass material at a first pressure, wherein the first vessel is a reactor for pretreatment of a biomass material with steam or other heating media, and wherein the first vessel comprises an outlet configured to output the treated biomass material;
a transporting pipe configured to receive the entirety of the biomass material that has been treated in the first vessel;
a second vessel configured to receive the biomass material that has been treated in the first vessel and has been transported through the transporting pipe, the second vessel comprising an inlet;
wherein:
the transporting pipe comprises a first restriction and a second restriction configured to control a flow in the transporting pipe and thereby provide a pressure drop to the biomass material transported through the transporting pipe;
and
the first restriction is located in a second half of a length along which the biomass material travels starting from the outlet of the first vessel and ending at the inlet of the second vessel, and the second restriction is provided as a valve in connection with the outlet of the first vessel.

4 more elements

A method for treating and transporting a biomass material, the method comprising:

providing a system comprising:
a first vessel configured to treat the biomass material at a first pressure, wherein the first vessel comprises an outlet configured to output the treated biomass material;
a transporting pipe configured to receive the entirety of the biomass material that has been treated in the first vessel;
a second vessel configured to receive the biomass material that has been treated in the first vessel and has been transported through the transporting pipe, the second vessel comprising an inlet;
wherein:
the transporting pipe comprises a first restriction and a second restriction configured to control a flow in the transporting pipe and thereby provide a pressure drop to the biomass material transported through the transporting pipe;
and
the first restriction is located in a second half of a length along which the biomass material travels starting from the outlet of the first vessel and ending at the inlet of the second vessel, and the second restriction is provided as a valve in connection with the outlet of the first vessel;
pre-treating the biomass material with steam or other heating media in the first vessel under a pressure of at least 5 bar(g) and a temperature of at least 130° C.;
and
transporting the biomass material from the first vessel to the second vessel through the transporting pipe.

8 more elements

Dependencies are inferred from the claim text.