The Feasibility Study On Atmospheric Residue Catalytic Pyrolysis Process Jointing Steam Cracking Process

In recent years, with the rapid development of world economy, the market demands ofpropylene and ethylene are gradually increasing.In view of steam cracking process with thecharacteristics of high energy consumption,low propylene/ethylene ratio,lack of feedstock,many countries are actively developing new low carbon olefin production technologies andhave made important progress,especially heavy oil catalytic cracking technology will be theeffective approach to boosting low carbon olefn production.After revamping, the crude oil processing capacity of Liaoyang Petrochemical CompanyRefinery has reached10000000tons/year in2011, the production of atmospheric residue isalso increasing, how to make full use of the excess atmospheric residue has become the issuesof enterprise’s development. The atmospheric residue of Liaoyang Petrochemical Company withhigh content of saturates is good raw material for catalytic cracking technology producingpropylene and ethylene.At present,the catalytic cracking technology of atmospheric residue has gradually beenmade great progress,Making use of atmospheric residue to produce low carbon olefin by thecatalytic cracking technology, which can diversify the raw material source for producingpropylene and ethylene, and increasing great profits.Therefore this paper chooses theatmospheric residual oil of Liaoyang Petrochemical Company as the main raw material,through the study of atmospheric distillation residue propylene oil catalytic cracking process,introducing the catalytic cracking process to the steam cracking plant, comparing productdistribution of the two processes, and combined with the products of atmospheric residuecatalytic cracking and steam cracking to separate high-purity propylene product,andaccounting for the subsequent system of steam cracker, conducting a feasibility analysis forbottlenecks in parts of the steam cracking plant, in order to achieve integrated refining and forthe maximization of corporate profits.