Process for production and preparation of rapid pyrolysis...

C - Chemistry – Metallurgy – 10 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C10C 5/00 (2006.01) C10B 53/02 (2006.01) C10J 3/66 (2006.01) C10K 1/04 (2006.01)

Patent

CA 2623148

Process for production and preparation of rapid pyrolysis products from biomass for pressurized entrained-flow gasification comprising heating the biomass in the absence of oxygen in a pyrolysis reactor, in which process a temperature between 400 and 600~C is established for one to 50 seconds and the biomass reacts to form porous pyrolysis coke, pyrolysis condensate and pyrolysis gas, the pyrolysis gases are removed and vaporous components of the pyrolysis condensate are condensed in a plurality of condensation stages, condensed components being separated off in each condensation stage. The object is to improve the process in such a manner that, in particular, the risk of unwanted separation of the pyrolysis condensate and/or slurry before entry into the pressurized entrained-flow gasifier is reduced. The object is achieved by a means that in the first condensation stage a coke-condensate mixture is separated off at temperatures above the dew point of water, and in at least one following condensation stage an aqueous solution, called low- temperature carbonization wastewater, of oxygenated organic compounds is condensed and separated at temperatures between 0~C and 90~C.

L'invention concerne un procédé de fabrication et de préparation de produits de pyrolyse rapide à partir de biomasse pour une gazéification sous pression à lit entraîné, consistant à chauffer la biomasse avec exclusion d'oxygène dans un réacteur de pyrolyse, sous une température de 400 °C à 600 °C, sur une durée allant jusqu'à 50 secondes, de manière à obtenir un coke de pyrolyse, un condensat de pyrolyse et un gaz de pyrolyse, à dévier les gaz de pyrolyse et à condenser des constituants gazeux du condensat de pyrolyse dans plusieurs étapes de condensation, des constituants condensés étant séparés dans chaque étape de condensation. L'invention vise à améliorer le procédé selon l'invention de manière à réduire le risque de dissociation du condensat de pyrolyse et/ou des suspensions avant entrée dans le gazéificateur sous pression à lit entraîné. Dans la première étape de condensation, un mélange coke/condensat est séparé à des températures supérieures au point de rosée de l'eau, et dans au moins une deuxième étape de condensation, une solution aqueuse de composés organiques oxygénés appelée eau d'expansion est condensée et séparée à des températures entre 0 °C et 90 °C.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process for production and preparation of rapid pyrolysis... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for production and preparation of rapid pyrolysis..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for production and preparation of rapid pyrolysis... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1506389

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.