减压渣油掺炼催化裂化油浆丁烷脱沥青-糠醛精制组合工艺研究

STUDY ON THE INTEGRATED PROCESS OF BUTANE DEASPHALTING AND FURFURAL EXTRACTION PROCESSING VACUUM RESIDUE BLENDED RFCC SLURRY

以减压渣油、催化裂化油浆为原料,在实验室进行了减压渣油掺炼催化裂化油浆溶剂脱沥青-糠醛精制组合工艺的研究工作。结果表明,新疆混合原油的减压渣油中掺入40%的催化裂化油浆,在萃取釜温度145℃,分馏柱中部温度150℃,分馏柱顶温度155℃,溶剂流量140mL/min的条件下,经丁烷溶剂脱沥青可以得到合格的AH-70重交通道路沥青产品,脱沥青油在塔顶温度70℃,塔底温度40℃,温度梯度30℃,溶剂比1.5∶1的条件下,经糠醛精制后,其精制油具有更好的催化裂化性能,抽出油可以作为芳香烃型橡胶填充油的调合组分。此工艺为催化裂化装置外甩油浆的合理利用开辟了一条新的途径。

A solvent deasphalting-furfural refining combined process using vacuum residue （VR） blended with slurry from resid fluid catalytic cracking（RFCC）unit as feedstock was studied to provide a new approach for utilizing RFCC slurry. The experimental results indicated that qualified AH- 70 heavy road asphalt could be obtained by butane deasphalting when using feedstock of VR blended with 40% RFCC slurry under the treating conditions of an extraction temperature of 145 ℃, a solvent flow rate of 140 mL/min, and the temperatures of fractionation column mid and top were 150 ℃ and 155 ℃ ,respectively. The reffinate oil from furfural extraction of deasphalted oil（under conditions of a solvent to oil ratio of 1.5,and the temperatures of tower top and bottom were 70 ℃ and 40 ℃, respectively） exhibited improved catalytic cracking performance, and finally the extract oil could be used as blending component of aromatic rubber filling oil.