A sheet manufacturing apparatus includes: a defibrating unit which defibrates a raw material including at least fibers; an addition unit which adds an additive agent to a defibrated material which is defibrated in the defibrating unit; and a sheet forming unit which forms a sheet by bonding the plurality of fibers to each other via the additive agent. According to a history of the raw material, an amount of the additive agent which is fed by the addition unit varies. In addition, there is provided a sheet manufacturing method, including: defibrating the raw material which includes at least fibers; adding the additive agent to the defibrated material; and bonding the plurality of fibers to each other via the additive agent. According to the history of the raw material, a feed amount of the additive agent with respect to the raw material varies.

A sheet manufacturing apparatus that manufactures a sheet-shaped recycled paper using coarsely crushed pieces obtained by coarsely crushing a sheet containing fibers as a raw material, includes a container loading section that is configured to load a container in which the coarsely crushed pieces are housed and which has an information carrying section for carrying information related to characteristics of the housed coarsely crushed pieces, a reading section that reads the information carried by the information carrying section, a determination section that determines whether or not the coarsely crushed pieces in the container are suitable as the raw material for sheet manufacturing by the sheet manufacturing apparatus based on the information read by the reading section, and a switching section that switches between a first state in which the container is configured to be loaded into the container loading section and a second state in which the container is prevented from being loaded into the container loading section according to a determination result of the determination section.

A sheet manufacturing system includes a coarsely crushing apparatus that coarsely crushes a paper; a sheet manufacturing apparatus that generates a sheet-shaped recycled paper using coarsely crushed pieces of the paper as a raw material; and a server that is connected to the coarsely crushing apparatus and the sheet manufacturing apparatus via a network, in which the sheet manufacturing apparatus has a reserving section that reserves the coarsely crushed pieces, a remaining amount detector that detects a remaining amount of the coarsely crushed pieces in the reserving section, a calculation section that calculates an allowable filling amount of the coarsely crushed pieces in the reserving section based on a detection result of the remaining amount detector, and an output section that transmits information related to the calculated allowable filling amount to the server, and the coarsely crushing apparatus has an integration section that integrates the coarsely crushed pieces, an input section that acquires the information related to the allowable filling amount from the server, a display information generation section that generates display information related to the allowable filling amount based on the information acquired by the input section, and a display section that displays the display information.

A sheet manufacturing system includes a coarsely crushing apparatus that coarsely crushes a paper, a sheet manufacturing apparatus that generates a sheet-shaped recycled paper using coarsely crushed pieces of the paper as a raw material, and a server that is connected to the coarsely crushing apparatus and the sheet manufacturing apparatus via a network, in which the coarsely crushing apparatus has an integration section that integrates the coarsely crushed pieces, an integration amount detector that detects an integration amount of the coarsely crushed pieces in the integration section, and a transmission section that transmits information related to the integration amount, which is detected by the integration amount detector, to the server, and the sheet manufacturing apparatus has a reception section that acquires the information related to the integration amount from the server, a display information generation section that generates display information related to the integration amount based on the information acquired by the reception section, and a display section that displays the display information.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining and applying a distribution of oxidizing agents in delignification of a pulp bleaching cycle. The method obtains an incoming kappa value of an unbleached pulp slurry and a target kappa value expected for a bleached pulp slurry. A model generates a sequence kappa factor based on these values, and a total equivalent chlorine (TEC) factor from the sequence kappa factor and the incoming kappa value. Scenarios are simulated using the TEC factor, each scenario specifying a unique distribution of dosage targets for oxidizing agents and having a total consumption score for the oxidizing agents that is determined based on the dosage targets for the oxidizing agents. A scenario with the lowest total consumption score is selected, and the model applies the dosage targets of oxidizing agents for the selected scenario during the pulp bleaching cycle.

Systems and methods are disclosed herein for proactive intervention in an industrial process involving a defoamer composition. Learning models are iteratively trained using historical input data sets comprising directly measured variables from the industrial process and correlations between combinations of the input data and respective process states. For a current input data set associated with the industrial process, and responsive to detected process attributes, an intervention event is determined with respect to at least a first defoamer component in a current composition. Models are utilized to predict, responsive to the intervention event, changes in target values within a specified range of target values for other components in the current composition and/or for directly measured variables as corresponding with a specified process state. Automatic control is performed for respective actuators to produce a new defoamer composition, and as needed to other actuators for the directly measured variables.

An apparatus for measuring flowing suspension includes a radiation source that directs wave motion to the suspension, a flow causing particles of the suspension to be sorted by size. A measuring arrangement measures first values of a first parameter of the wave motion interacted with the suspension at a first wavelength band of the wave motion, and measures second values of at least one of the following: a second parameter of the wave motion interacted with the suspension, and the first parameter of the wave motion interacted with the suspension at a second wavelength band of the motion, the measurement of the first and second values being synchronized. The arrangement forms at least one comparison being configured to relate to one of the first and one of the second values, and forms a distribution with at least one of first values as a function of one of the comparisons.

A method for controlling paper making includes monitoring (302) a surface level of a fibrous suspension in a storage, and identifying (303) that the surface level has decreased so that at least one emptying criterion is met and thereafter identifying that the surface level has increased so that at least one refilling criterion is met, and responsively to the identifying that the surface level has increased so that the at least one refilling criterion is met, starting to dose a biocide agent into the fibrous suspension entering the storage. A corresponding apparatus and computer program are disclosed.

A fibrous body processing apparatus includes a coarsely-crushed-pieces reservoir unit; a humidifying unit that generates humidified air and supplies the humidified air to the coarsely-crushed-pieces reservoir unit; a weight measurement unit that measures a weight of the coarsely crushed pieces let out of the coarsely-crushed-pieces reservoir unit; a fixed amount supplying unit that supplies a fixed amount of the coarsely crushed pieces measured by the weight measurement unit; a defibrating unit that defibrates the coarsely crushed pieces supplied from the fixed amount supplying unit; a first transportation portion through which the coarsely crushed pieces are sent from the coarsely-crushed-pieces reservoir unit to the weight measurement unit; a second transportation portion through which the coarsely crushed pieces are sent from the fixed amount supplying unit to the defibrating unit; and a generated at the humidifying unit is supplied to the defibrating unit while bypassing the weight measurement unit.

An apparatus for measuring flowing suspension comprises a radiation source that directs wave motion to the flowing suspension. A measuring arrangement measures first values of a first parameter of the wave motion interacted with the flowing suspension at a first wavelength band of the wave motion. The measuring arrangement measures second values of the at least one of following: a second parameter of the wave motion interacted with the flowing suspension, and the first parameter of the wave motion interacted with the flowing suspension at a second wavelength band of the wave motion. The measuring arrangement forms at least one comparison relating to one of the first values and one of the second values. The measuring arrangement forms a distribution which has at least one of first values as a function of one of the comparisons.