On-line deactivated catalyst regenerating method and on-line deactivated catalyst regenerating device for wood tar hydrogenation in fluidized bed

Abstract

The invention relates to an on-line deactivated catalyst regenerating method and an on-line deactivated catalyst regenerating device for wood tar hydrogenation in a fluidized bed. The on-line deactivated catalyst regenerating method includes the following steps of (A) catalyst oil decanting; (B) mixing of catalyst and a lean solvent; (C) extracting and washing through tiny swirling flows; (D) solvent reducing; (E) solvent regenerating; (F) metallic reduction.

Description

technical field [0001] The disclosure belongs to the field of biomass energy and oil product processing, and relates to an online regeneration method and device for an ebullating bed wood tar hydrogenation deactivation catalyst. Specifically, the present disclosure provides an online regeneration method and device for an ebullating bed wood tar hydroprocessing deactivation catalyst. Background technique [0002] Facing the dual pressure of energy and environment, the development of clean and renewable energy has become an urgent goal in today's world. Biomass energy has the advantages of large quantity, wide distribution, easy acquisition, easy storage, and environmental protection. Therefore, biomass energy conversion technology is becoming a research hotspot in various countries. [0003] From the rapid pyrolysis process of straw and wood, wood tar products can be obtained; high-quality fuel oil can be obtained by hydrogenation. Since wood tar is easy to condense and cok...

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Problems solved by technology

[0012] The present disclosure aims to solve the technical problem in the treatment of catalysts discharged from the fluidized bed wood tar hydrogenation technology, that is, the catalyst discharged intermittently from the fluidized bed wood tar hydrogenation reactor contains a large amount of free oil and pore oil, and it is difficult to realize the catalyst The high-efficiency separation of particles and oil phases results in a large amount of oil waste and harms the environment; however, the existing treatment technologies often have problems such as incomplete separation, inability to operate continuously, and long working cycles; at the same time, the obtained Catalyst particles become ineffective due to oxidation during the reaction process, and direct disposal will cause a great waste of catalyst resources, making the cost of catalysts high and hindering the development of ebullating bed wood tar hydrogenation technology

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