Filtering separation device for biomass pyrolytic heavy oil sludge and separation process thereof

Abstract

The invention discloses a filtering separation device for biomass pyrolytic heavy oil sludge and a separation process thereof. The separation process comprises the following steps: discharging the mixture of the heavy oil and the sludge from the bottom part of a fractionating tower at a high temperature, directly entering into a centrifuge filtering separation device from the upper side position along the inner wall tangential direction, filtering the heavy oil from the filtering nets on the side part and the upper part through a filtering channel, and discharging from the lower liquid oil outlet, and pumping into the fractionating tower to spray and circulate; and because the sludge is heavier than the heavy oil, discharging the sludge from the bottom part of a separator along the filtering channel and emulsifying. The process has the following advantages that (1) the continuous separation of the sludge and the liquid heavy oil is realized, the sludge is emulsified and cannot be polymerized into a solid so that the oil extraction rate of the liquid oil is increased; (2) the separated heavy oil is discharged through the sediments at bottom part of the separator and the bottom part of an intermediate tank so that the returned heavy oil does not contain excess impurities and the blockage of the pipe and the nozzle is avoided; and (3) the separation of the high-temperature sludge and the heavy oil is realized without an external force and the energy is saved.

Description

technical field [0001] The invention belongs to the field of biomass new energy, and in particular relates to a filtration and separation device and separation process for biomass pyrolysis heavy oil sludge. Background technique [0002] With the rapid development of society, the development of primary energy has been exhausted day by day, and biomass as a secondary energy has been paid more and more attention by people. Choosing new renewable energy sources and reducing environmental pollution has become the main goal pursued by people. At present, my country's biomass pyrolysis fuel oil technology started late, and there are shortcomings such as backward equipment, immature technology, and low pyrolysis yield, so a certain production scale has not been formed. [0003] Because the pyrolysis gas after biomass pyrolysis passes through the condensation of different temperature gradients in the fractionation tower, different products are produced, and the general pyrolysis de...

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Problems solved by technology

At present, my country's biomass pyrolysis fuel oil technology started late, and there are shortcomings such as backward equipment, immature technology, and low pyrolysis yield, so a certain production scale has not been formed.

[0003] Because the pyrolysis gas after biomass pyrolysis passes through the condensation of different temperature gradients in the fractionation tower, different products are produced, and the general pyrolysis device has incomplete pyrolysis and incomplete separation, so some lignin, heat Carriers, biomass semi-coke and other solid components enter the fractionation tower and exist in the heavy oil after quenching, which increases the viscosity and specific gravity of the heavy oil, making some oil products a slightly fluid sludge. If the viscous oil is not discharged in time emulsification, it will cause the fractionation column to return to the tower circulation pipeline and equipment blockage and shut down

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