Tests to Reduce TorreCat??? Technology to Practice

Westover, Tyler¹  Emerson, Rachel Marie¹ 

[1] Idaho National Lab. (INL), Idaho Falls, ID (United States)

关键词: biofuel;    catalyst;    torrefaction;   

DOI  :  10.2172/1262487
RP-ID  :  INL/EXT--16-38088
PID  :  OSTI ID: 1262487

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Torrefaction is the thermal treatment of materials in the absence of oxygen in the temperature range of 200 to 300 ?��C and has been shown to improve handling and grinding properties, hydrophobicity, volatiles content, energy density, and combustion performance of renewable energy biomass feedstock materials. The disadvantages of torrefaction are its relative high cost compared to the low value input feedstock material and the energy that can be lost to volatized gases. This work will demonstrate a new technology developed by Advanced Torrefaction Systems (ATS), known as TorreCat??? Technology, that uses an oxidation catalyst in a closed system to combust and destroy volatile organic compounds (VOCs) and other byproducts produced in the torrefaction process. An oxidation catalyst is a substance, or a combination of substances, that accelerate the rate of a chemical reaction without being consumed by the reaction. Catalytic combustion is a reaction that occurs at temperatures 50% lower than traditional combustion, such that essentially no NOx is created. The output of the oxidation catalyst (flue gas) consists mainly of superheated steam and inert gases (carbon dioxide and nitrogen), which can be used for heat in the thermal treatment process. INL has previously developed a pilot-scale Continuous-Feed Thermal Treatment System (CFTTS) that has 10 kg/hr capacity but does not reform the flue gas to reduce environmental concerns or capture all available heat from the biomass material. Using the TorreCat??? technology in INL???s thermal treatment system will demonstrate increased thermal efficiencies during the treatment process as well as reduced environmental impact and clean-up costs. The objective of this project is to determine the effectiveness of the Torrecat??? technology to reform the flue gas and capture as much of its heat content as possible.