Method of calculation of a two-stage separation system of a biofuel production installation

Currently, the processing of plant waste is a promising area of development in modern energy. There are many methods for recycling waste, but not all of them are economically feasible and environmentally friendly. One of the most common processing methods is fast ablative pyrolysis, designed for thermal processing of waste without access to oxygen. As a result of such processing, carbon residue and pyrolysis gas are formed. The amount of pyrolysis gases produced is 60 % or more of the mass of processed raw materials. In order for pyrolysis gases to become high-quality fuel, they must be subjected to a separation process that takes place in devices called a vapor condenser. When separating pyrolysis gases, it is better not to use conventional oil and gas condensers since the condensed pyrolysis gases have a high tar content, which causes faster wear of the device. For the installation for the production of pyrolysis fuel, a two-stage separation system is proposed, designed to separate pyrolysis gases into fractional components: pyrolysis distillate, non-condensable combustible gas and water. The article presents the design of a two-stage separation system. The principle of operation of a two-stage separation system is described, and a diagram of its structure is given. A method for calculating a two-stage separation system is presented, which makes it possible to determine the geometric parameters of scrubber and ejector type capacitors.