System and method of fast pyrolysis of oil shale

Abstract

The invention discloses a system and a method of fast pyrolysis of oil shale. The system comprises a fast pyrolysis reactor and a spray tower, wherein the fast pyrolysis reactor comprises a reactor body, a multilayer regenerative radiant tube, an oil shale inlet, a distributing device, a distributing gas inlet, a plurality of pyrolysis gas outlets and a carbocoal outlet, the fast pyrolysis reactor is suitable for performing fast pyrolysis treatment on the oil shale by adopting the regenerative radiant tube, so as to obtain carbocoal and pyrolysis gas, and the spray tower is connected with the plurality of pyrolysis gas outlets and is suitable for performing spray treatment on the pyrolysis gas by adopting cooling liquid, so as to obtain shale oil and gas. According to the system, fast pyrolysis of the oil shale can be realized, and the yield of the obtained shale oil is high.

Description

Technical field [0001] The present invention belongs to the field of chemical engineering. Specifically, the present invention relates to a system and method for rapid pyrolysis of oil shale. Background technique [0002] The oil shale pyrolysis system can be divided into direct heat transfer furnace and indirect heat transfer furnace according to the heating method, and the direct heat transfer furnace can be divided into solid heat carrier and gas heat carrier pyrolysis furnace according to the different heat carriers. Since direct heat transfer is faster and more efficient than indirect heat transfer, modern dry distillation technology mainly uses direct heat transfer furnaces. At present, the technologies developed based on direct heat transfer furnaces mainly include ATP furnace (solid heat carrier) in Australia, Galoter furnace (solid heat carrier) in Estonia and Tosco-Ⅱ oil shale dry distillation technology developed by Tosco in the United States ( Solid heat carrier), th...

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Problems solved by technology

At present, the technologies developed based on the direct heat transfer furnace mainly include the ATP furnace (solid heat carrier) in Australia, the Galoter furnace (solid heat carrier) in Estonia, and the Tosco-II oil shale dry distillation technology developed by Tosco Corporation of the United States ( Solid heat carrier), the oil shale pyrolysis system researched in China in the past two years mainly includes the DG technology (solid heat carrier) of Dalian University of Technology and the oil shale fluidized bed dry distillation and decarburization process developed by Shanghai Bosheng Company ( Gas heat carrier), but the direct heating technology of heat carrier involves the separation and reheating of heat carrier, etc., and the process is complicated, which leads to the short continuous start-up time of the system

The indirect heat transfer furnace mainly includes rotary kiln, walking furnace and rotary furnace, etc., but there are mechanical movements, complex equipment structure, high maintenance cost, and indirect heat transfer generally has low thermal efficiency.

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