Minnesota Mining and Manufacturing Company

Gdo Inc.

Syngas Technology, LLC

3m Innovative Properties Company

Lloyd R White

Duane A Goetsch

Jacqueline R Hitchingham

Susan H Lundquist

Steven J Schmit

Roger J Forester

Ian S Machay

Kym Brian Arcuri

William V Balsimo

Miroslav M Tochacek

Jacqueline Hichingham

Ulrich Bonne

A process for pretreating a biomass feedstock for gasification for the production of syngas. The biomass feed, which is preferably a lignocellulosic material, is subjected to torrefaction that increases its energy density, friability, and results in higher efficiency gasification of the torrefied biomass.

Pretreatment of biomass feed for gasification

A method for controlling the peak temperature of a fluid gasification zone used for the gasification of carbonaceous materials to a syngas. Pulsed oxygen is used to control the peak temperature of the gasification zone and to avoid hot spots in the gasifier.

Method for controlling the peak temperature of a fluid gasification zone

A process for producing transportation fuels, such as gasoline and diesel fuel, from syngas with a low H/CO ratio. The syngas is first converted to dimethyl ether which is then converted to gasoline by way of a dimethyl ether to gasoline process and to diesel fuel by way of a Fischer-Tropsch process.

Process for producing transportation fuels from syngas

A two stage conversion process for converting biomass to a syngas, wherein the first stage is a gasification stage and the second stage is a combustion stage.

Two stage process for converting biomass to syngas

A multi-stage membrane process for the removal of carbon dioxide from syngas streams containing at least about 5 volume percent carbon dioxide. The syngas is preferably obtained by the gasification of a biomass feedstock.

[object Object]

A pretreatment process of a biomass feedstock for gasification for the production of syngas. The biomass feed, which is preferably a cellulosic feed, is subjected to a two stage torrefaction that comminutes the biomass and increases its energy density.

Production of biodiesel from vegetable and animal oils with conversion of a by-product crude glycerol stream to methanol. The crude glycerol stream is combined with superheated steam and oxygen to produce a synthesis gas that is then passed to a methanol synthesis reaction zone to produce methanol.

Production of biodiesel and a side stream of crude glycerol which is converted to methanol

Production of methanol from a stream of crude glycerol. The crude glycerol is preferably a side product (waste product) that results from the production of biodiesel from vegetable oils and animal fats. The crude glycerol stream is combined with superheated steam and oxygen to produce a synthesis gas that is then passed to a methanol synthesis reaction zone to produce methanol.

Production of methanol from the crude glycerol by-product of producing biodiesel

A composite article including a particle-loaded fibrillated polytetrafluoroethylene web with a reinforcing screen or scrim partially embedded therein.

Reinforced particle-loaded fibrillated PTFE web

A method comprises the step of spray-drying a solution or slurry comprising (alkali metal or ammonium) (metal) hexacyanoferrate particles in a liquid, to provide monodisperse, substantially spherical particles in a yield of at least 70 percent of theoretical yield and having a particle size in the range of 1 to 500 micrometers, said particles being active towards Cs ions. The particles, which can be of a single salt or a combination of salts, can be used free flowing, in columns or beds, or entrapped in a nonwoven, fibrous web or matrix or a cast porous membrane, to selectively remove Cs ions from aqueous solutions.

Adsorbent for metal ions and method of making and using

A method for removing metal ions from solution comprises the steps of providing titanate particles by spray-drying a solution or slurry comprising sorbent titanates having a particle size up to 20 micrometers, optionally in the presence of polymer free of cellulose functionality as binder, said sorbent being active towards heavy metals from Periodic Table (CAS version) Groups IA, IIA, IB, IIB, IIIB, and VIII, to provide monodisperse, substantially spherical particles in a yield of at least 70 percent of theoretical yield and having a particle size distribution in the range of 1 to 500 micrometers. The particles can be used free flowing in columns or beds, or entrapped in a nonwoven, fibrous web or matrix or a cast porous membrane, to selectively remove metal ions from aqueous or organic liquid.

Method for removing metal ions from solution with titanate sorbents

A ceramic fiber-ceramic composite filter having a support composed of ceramic fibers, preferably texturized, a carbonaceous layer thereover, and a silicon carbide coating over the carbonaceous layer and coated on substantially all of the fibers. A strong, tough, light weight filter is achieved which is especially useful in high temperature gas environments.

Ceramic-ceramic composite filter

The present invention makes possible fabrics stitchbonded with or knitted from brittle yarns by providing a composite yarn which is able to be used in commercial stitchbonding and knitting machines, the new composite yarn comprising a load-bearing core yarn, a brittle yarn and a wrap yarn which secures the core yarn and the brittle yarn together. The wrap yarn may be helically wrapped around the load-bearing core yarn and the brittle yarn, or the wrap yarn may secure the load-bearing core yarn and the brittle yarn together with a series of connected loops forming a knitted pillar of chain stitches.

Elastic composite yarns from brittle ceramic yarns

A high temperature stable woven fiber fabric has uniform minimum gas permeability of less than 2.0 L/M/cm.sup.2 and is capable of withstanding at least 10,000 cycles in a Bally.TM. Flexometer test without failure. An untreated fabric is subjected to a sequential process which provides uniform permeability and greater flexibility and acid resistance to the treated fabric. The treated fabric is particularly useful in high temperature applications such as filter elements and furnace curtains.

Growing community of inventors

Minneapolis, MN, United States of America

Lloyd R White