Method and apparatus for producing pyrolysis oil having improved stability

摘要

Methods and apparatus to improve hot gas filtration to reduce the liquid fuel loss caused by prolonged residence time at high temperatures are described. The improvement can be obtained by reducing the residence time at elevated temperature by reducing the temperature of the pyrolysis vapor, by reducing the volume of the pyrolysis vapor at the elevated temperature, by increasing the volumetric flow rate at constant volume of the pyrolysis vapor, or by doing a combination of these.

主权项

1. Apparatus for producing pyrolysis oil having improved stability comprising:
a pyrolysis reactor having an inlet and an outlet; a hot gas filter having an inlet and an outlet, the inlet of the hot gas filter in fluid communication with the outlet of the pyrolysis reactor, the hot gas filter including a filter with a filter insert that reduces a void volume of the filter, wherein the filter, or the filter insert, or both is tapered to provide a reduced space between the filter and the filter insert at a base of the filter relative to a space between the filter and the filter insert at an outlet of the filter; and a condenser having an inlet, the inlet of the condenser in fluid communication with the outlet of the hot gas filter.