Mahle International Gmbh

Natural Pulping Ag

Carl Freudenberg Kg

Sven Siegle

Michael Braunheim

Stefan Jauss

Matthias Gänswein

Richard Wlassa

Jörg Hrodek

Thomas Kühlwein

Pia Küsgens

Holger Leubner

Nelly Klinkspon

A module insert includes at least one water level sensor, at least one valve and at least one flow channel for the water. The module insert has at least one container having sorbent mechanism for collecting contaminants from the separated water. A pressure-resistant housing is configured to protect an interior of the module insert from the pressure of the fuel.

Module insert for installation in a liquid filter

A fuel filter having a filter housing including at least one filter element. A water collection chamber configured to collect water separated out of the fuel. An active carbon filter is disposed downstream of the water collection chamber and a water-soluble dividing device is disposed between the water collection chamber and the active carbon filter and is impermeable or insoluble to fuel.

Fuel filter

A process for producing a pulp from cellulose-containing material, wherein the material is reacted with formic acid as the solvent, and cooked at approximately the boiling temperature of the solvent, whereby return condensation is used. Annual plants, deciduous or coniferous wood can be used as the cellulose-containing material. In one variant of the process, the cellulose-containing material is only slightly warmed, whereby backflow cooling is used, and then a precisely predetermined quantity of hydrogen peroxide is slowly added to the liquid at a constant rate. This process variant can be repeated at a lower cooking temperature. The pulp thus obtained is preferably utilized in the production of cellulose, and in particular in the production of paper or cardboard. It is proposed that the lignin, which is isolated from the cellulose-containing material, have further applications, whereby such lignin is, after the pulp has been separated from the solvent, itself precipitated out in water. The lignin thus obtained can be used as a new building material, as a filler material or as an output substance to be used in the manufacture of aromatic products.

Method of producing a pulp from cellulosic material using formic acid and hydrogen peroxide

Growing community of inventors

Winnenden, Germany

Sven Siegle