Abstract:
Lignin-rich starting material is suspended in a first medium, which is acidic and aqueous, to form a aqueous acidic suspension, which is heated and allowed to form two continuous phases, a thermoplastic lignin phase and an aqueous phase. The thermoplastic lignin phase is separated from the aqueous phase and passed through a shape giving process into a second medium which is at a temperature lower than that of the thermoplastic lignin phase and in which the thermoplastic lignin phase is essentially insoluble. Solid lignin formed in the second medium is recovered.
Abstract:
The invention relates to a filter element, a method for manufacturing the filter element, and use. The filter element (1) is formed of a solid-liquid filter fabric (2) and has at least one separately manufactured support element (14) fastened to it. The support is a plate-like piece.
Abstract:
A method to form a fibrous web including: introducing a furnish to a headbox of a fiber web machine, wherein the furnish includes a thick stock component and a filtrate, injecting a gas into to the furnish to form a foamed furnish, and laying the foamed furnish on a wire or between wires of a wire section of the fiber web machine to form the fibrous web from the foamed furnish.
Abstract:
A neck element of a disc filter sector and a disc filter sector. A sector (5) is provided with a blade part (11) having a filtering surface and a neck part (12) coupling the blade part to a disc filter (1). The neck part has an inner space through which liquid runs from the sector. The inner space of the neck part is provided with at least one support element (18) to prevent opposite flanks (19) defining the neck part from moving in relation to one another. The sector may comprise a separate neck element (20) that may be coupled to the blade part. In that case the neck element is provided with at least one inner support element.
Abstract:
A heat exchanger pipe in a flow duct for gases. The pipe first section has a second section with an inner pipe for transferring heat transfer medium; an outer pipe that radially encloses a part of the inner pipe; and a medium layer between the outer pipe and the part of the inner pipe. The second section of the heat exchanger pipe bends less than 90 degrees. Furthermore, the first section is insulated in its entirety, or non-insulated in the vicinity of other heat recovery surfaces only. In the device the temperature of the heat transfer medium flowing in the inner pipe is at least 500° C., the temperature of the outer surface of the outer pipe is higher than 600° C., or an auxiliary agent is fed to the thermal device.
Abstract:
The invention relates to a filter element, a method for manufacturing the filter element, and use. The filter element (1) is formed of a solid-liquid filter fabric (2) and has at least one separately manufactured support element (14) fastened to it. The support is a plate-like piece.
Abstract:
A cyclone for separating solid material from a mixture of the solid material and a gaseous substance. The cyclone comprises a cylindrical body having a central axis in a first direction and an inlet channel. The cyclone is configured to let out the solid material from the cylindrical body in the first direction. An interior of the inlet channel tapers in the first direction towards a bottom of the inlet channel. Additionally, the cyclone comprises nozzles arranged at the bottom of the inlet channel, the nozzles being configured to feed gas to the inlet channel for enhancing flow of the solid material at the bottom of the inlet channel. A thermal system comprising the cyclone. Use of the cyclone such that the first direction is downwards.
Abstract:
A joint for joining ends of at least two fiber webs together, the joint being formed of at least one cut provided to penetrate through the ends of the fiber webs in an overlapping position, which cut has at least one side part and from the side part extending at least one substantially straight part and which cut, which forms at least one flap, being configured to remain attached to the fiber webs by at least one folding line substantially aligned with the direction of the movement of the fiber webs.
Abstract:
A blade element pair (20) for a refiner (1, 2, 3) is intended for refining fibrous material. Each blade element (5, 5′, 8, 8′) of the blade element pair (20) has a refining surface (6, 9) with blade bars (16, 18) and blade grooves (17, 19) extending along the blade element (5, 5′, 8, 8′), and openings (14,15) extending through the blade element (5, 5′, 8, 8′). The openings (14, 15) in one of the blade elements (5, 5′, 8, 8′) is at different axial (A) or radial (R) positions from the openings (14,15) in the other blade element (5, 5′, 8, 8′) when the blade elements (5, 5′, 8, 8′) of the blade element pair (20) are set substantially opposite to each other.
Abstract:
A coaxial heat transfer tube (100), comprising a first inner heat transfer tube (110) having straight parts (111, 113, 115, 117) and curved parts (112, 114, 116), a first outer heat transfer tube (120) having straight parts (121, 123, 125, 127) and curved parts (122, 124, 126). The first outer heat transfer tube (120) radially surrounds the first inner heat transfer tube (110) at least within the first primary straight part (121) and the first primary curved part (122). Thermally insulating material (530) has been provided in between a curved part (122) of the first outer heat transfer tube (120) and a curved part (112) of the first inner heat transfer tube (110). Neither straight part (121) nor a curved part (122) of the first outer heat transfer tube (120) comprises a longitudinal seam. A method for making a coaxial heat transfer tube (100).