Agency for Science, Technology and Research

Nanyang Technological University

Carbonexcel Pte Ltd

David Tee Liang

Tuti Mariana Lim

Joo Hwa Tay

Sau Ngen Chen

Rong Wang

Dong Li

Exemplary techniques disclosed provide a heat transfer element adapted for use in a rotary furnace for torrefaction and particle size reduction of biomass material. The heat transfer element is made up of a rounded object having a specific gravity substantially higher than a specific gravity of the biomass material to be torrefied, a heat capacity sufficient for the heat transfer elements in the rotary furnace to heat the biomass material to be torrefied, and a hardness sufficient for the heat transfer element to serve as grinding media to reduce the particle size of the biomass material to be torrefied. The heat transfer element has one or more surface features pre-formed in a surface of the rounded object. The surface features are configured to increase traction between the heat transfer elements and the biomass material to be torrefied. A system for torrefaction and particle size reduction of biomass material, including a rotary furnace charged with heat transfer elements as described above, and a method for using such a system for torrefaction and particle size reduction of biomass material are also discussed.

Method and apparatus for torrefaction of biomass materials

The present invention provides a method for the production of a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) asymmetric hollow fiber membrane. The invention comprises preparing a dope solution of PVDF-HFP with an additive of lithium chloride or glycerol dissolved in a solvent such as N-methylpyrollidone (NMP). The dope solution is spun to form a PVDF-HFP asymmetric hollow fiber membrane.

Method for the production of an asymmetric hollow fiber membrane

Contaminants from surfaces of temperature sensitive substrates, such as glass substrates are removed by exposing the surfaces to a hydrogen Surface-mixed diffusion flame for a predetermined duration of time. The predetermined duration of time being insufficient to heat up the surfaces substantially thereby causing damage to the temperature sensitive substrates.

Apparatus and method for cleaning glass substrates using a cool hydrogen flame

A method for sterilizing medical devices, comprising the steps: producing a plurality of hydrogen surface-mixed diffusion flame; exposing the plurality of hydrogen surface-mixed diffusion flame to the medical devices for a predetermined period of time; and exposing the medical devices to the plurality of hydrogen surface-mixed diffusion flame at a predetermined distance; wherein the hydrogen surface mixed diffusion flame further produces free radicals for further sterilizing of the medical devices.

Growing community of inventors

Singapore, Singapore

David Tee Liang