Westford, MA, United States
Westford, MA, United States

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A planar element is disclosed for use in a papermaking system. The planar element is suitable for use as a doctor blade or a top plate and includes a three-dimensional composite structure including elongated elements extending in at least three orthogonal directions, and a resin in which the three-dimensional composite structure is embedded.


Grant
Agency: European Commission | Branch: H2020 | Program: IA | Phase: SPIRE-01-2016 | Award Amount: 8.52M | Year: 2016

The objective of the SPOTVIEW project is to develop and demonstrate innovative, sustainable and efficient processes and technology components, in order to optimize the use of natural resources, especially water, in three industrial sectors (Dairy, Pulp and Paper and Steel) contributing to 44% of industrial water usage in EU. This resource optimization (including water, energy, raw materials and additives) is a key issue to maintain production competitiveness and sustainability. A total of 14 existing and new technologies will be assessed during the project, including solid/liquid separation, ultrafiltration, deionization, biological treatment, disinfection and chemical heat pump. The technology components will be assessed in simulated or operational environment for 9 new water management practices in the three industrial sectors. Up to 7 selected technologies demonstrators are planned in real industrial environment. The implemented process and technology will be evaluated in terms of environmental impacts and benefits, generated by achieving the SPOTVIEW targets (20% to 90% reduction of water usage, wastewater emissions, chemicals and energy use). The SPOTVIEW consortium covers the whole value chain, from technology development, assessment, supply and industrial applications in each targeted sector. Economic exploitation of the proposed technologies is pursued through a well described business case scenario and market penetration strategy. The market opportunities for future services and technology products beyond the SPOTVIEW project will generate up to 2800 new equipment and 7000 new jobs in Europe. The expected gains for the industrial sectors generated by the recovery of by-products and by energy, chemicals and additives savings represent annually 1.53b for Europe. The generated production capacity increase by companies has been estimated at 22.8b. Dissemination and training activities are planned to maximize the impact of the project.


Patent
Kadant | Date: 2014-11-06

The invention provides a doctor blade holder system that includes a doctor blade support structure, an adjustment profiling plate, and a series of adjustment mechanisms. The doctor blade support structure includes an elongated slot for receiving a doctor blade and a separate elongated slot to house mounting hardware. The adjustable profiling plate causes pressure to be applied to the working blade in a continuous manner along the length of the working blade, wherein the profiling plate is mounted to a holder mounting plate with a series of pairs of mounting structures allowing unconstrained flexure, or rotation, of the profiling plate with respect to holder mounting plate around two axes. The series of adjustment mechanisms attach to the holder mounting plate and acting on the profiling plate, wherein the adjustment mechanisms are capable of displacing the profiling plate in a bi-directional manner.


The serial multistage flotation process for eliminating hydrophobic particles from a stream of materials to be treated includes a step of introducing into one stage a layer of materials to be treated, originating either from a higher state or directly from the inlet of the system. There is an aeration step in which air extracted from the lower stages is mixed, diffused and dispersed in the layer of materials to be treated then escapes to the higher stage or to a foam discharge zone. After the aeration step, there is a deaeration step in which air is no longer introduced into the layer of materials to be treated before the departure thereof from one stage and that enables the discharge of the dispersed air to the higher stages or in the case of the highest stage to foam discharge zone. There is also a step of recovering the deaerated material.


Patent
Kadant | Date: 2013-03-13

Whitewater recovery processes, and associated systems and components, are generally described. Certain embodiments relate to whitewater recovery processes in which ion exchange is used to remove dissolved ions from the whitewater, which can reduce the degree to which chemical additives are used in the process. In certain embodiments, flocculation and/or filter components can be employed to aid in the removal of suspended solids from the whitewater.


Patent
Kadant | Date: 2013-12-11

A twin wire press for dewatering solid-liquid suspensions, such as pulp suspensions, between top and bottom webs is described herein which includes consecutive primary, secondary and tertiary dewatering sections. The primary dewatering section includes a wedge area. The secondary dewatering section is positioned adjacent to the primary section downstream therefrom and includes grooved rolls in an s-roll configuration. The tertiary dewatering section includes rolls in a scissor-nip configuration. The press rolls in the secondary and tertiary section are all supported onto a frame. Whenever maintenance is to be performed on any one of the grooved rolls or on the press roll assemblies, an overhead crane can for example be used since no frame structure is provided on top thereof.


Patent
Kadant | Date: 2013-01-30

A planar element for use in a papermaking machine comprising a synthetic construction incorporating nanoparticles in a polymeric resin matrix.


Patent
Kadant | Date: 2015-02-17

Whitewater recovery processes, and associated systems and components, are generally described. Certain embodiments relate to whitewater recovery processes in which ion exchange is used to remove dissolved ions from the whitewater, which can reduce the degree to which chemical additives are used in the process. In certain embodiments, flocculation and/or filter components can be employed to aid in the removal of suspended solids from the whitewater.


A doctor blade cartridge for use in a doctor blade holder is disclosed. The doctor blade cartridge is for receiving a doctor blade, and includes at least one blade supporting member, wherein the blade supporting member is sufficiently stiff to support the doctor blade and includes load indication means for providing a signal indicative of at least one of blade supporting member strain and blade supporting member deflection.


A self-compensating tube assembly is disclosed for use in a doctor blade holder. The self-compensating tube assembly includes a tube including a membrane that encloses a liquid with a substantially invariable bulk modulus of elasticity, density and viscosity; and chatter responsive for providing any of monitoring means of blade chatter through pressure, damping of blade chatter, and minimizing blade chatter.

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