The present invention concerns a method of optimization of the refining energy supplied by a refiner to a fiber composition during a refining operation, the refiner comprising at least two refining disks separated from each other by an adjustable gap. The invention also relates to a refining system adapted to the implementation of such a method.

The present disclosure relates to a system and a method for optimizing paper making process of a paper machine. The system described herein comprises a process device configured to receive a process parameters corresponding to characteristics of the material and chemical composition that is used in a paper making process. Further, the process device is configured to determine an optimal concentration level of a plurality of dosing additives based on the received process parameters. Finally, the process device is configured to control concentration level of the plurality of dosing additives for optimizing the paper making process based on the determined optimal concentration level.

A sheet manufacturing apparatus includes a sheet forming unit that forms a sheet, and a transport unit that transports the sheet along a transport path, in which the transport unit includes a plurality of transport rollers that transport the sheet, a sheet sensor that detects an abnormality generated in transport of the sheet in the transport unit, a cover that is installed above the transport path and is configured to rotate around a shaft of a rotation shaft, and a drive motor that rotates the cover, the cover moves between an open position that opens an upper portion of the transport path and a closed position that covers the upper portion of the transport path, and the cover moves from the closed position to the open position by the drive motor being rotationally driven when the sheet sensor detects an abnormality generated in the transport of the sheet.

A method, apparatus, and computer program control a process in making pulp, paper, or board automatically controlling by a rules engine a dosing of a chemical agent in the process into a fibrous suspension. The rules engine receives a plurality of measurements relating to the process and maintains a plurality of rules sets, including an active rules set. Each rules set defines how the dosing depends on the measurements. The rules engine controls the dosing of the chemical agent based on the measurements and the active rules set, logs at least some of the measurements and actualised dosing of the chemical agent, and receives at least one rules set candidate. The dosing of the chemical agent is simulated with the received at least one rules set candidate based on the earlier measurements; and simulation results are output for optimising performance of the chemical agent in the process.

A separation device includes: a material supply section that supplies a material containing a fiber; a defibrating section that defibrates the material supplied from the material supply section; a separation section that includes a rotating member, a suction portion, and a collection section, the rotating member having a first surface and a second surface that are in a front and back relationship, being at least partially composed of a mesh, and to which a defibrated material generated in the defibrating section is supplied onto the first surface, the suction portion being provided on a side of the second surface of the rotating member and sucking the defibrated material via the mesh to remove foreign matter, the collection section collecting the defibrated material from which the foreign matter on the first surface has been removed; a weight detection section that detects a weight of the material supplied by the material supply section; and a controller that controls an operation of the separation section based on a detection result of the weight detection section.