负压差斜管内催化剂颗粒流动特性的实验研究  

EXPERIMENTAL STUDY ON FLOW CHARACTERISTICS OF CATALYST PARTICLES IN INCLINED PIPE WITH NEGATIVE PRESSURE GRADIENT

作　　者：贺娇 彭威 刘梦溪[1] 唐海光 魏耀东[1] 史柯柯 He Jiao;Peng Wei;Liu Mengxi;Tang Haiguang;Wei Yaodong;Shi Keke(State Key Laboratory of Heavy Oil Processing,China University of Petroleum,Beijing 102249;Faculty of Engineering,China University of Petroleum at Karamay;PetroChina Qinghai Oilfield Golmud Refinery)

机构地区：[1]中国石油大学(北京)重质油全国重点实验室,北京102249 [2]中国石油大学(北京)克拉玛依校区工学院 [3]中国石油青海油田格尔木炼油厂

出　　处：《石油炼制与化工》2024年第8期107-112,共6页Petroleum Processing and Petrochemicals

基　　金：国家重点研发计划项目(2021YFA1501304);中国石油大学(北京)科学基金项目(2462022QZDX003);克拉玛依市科技创新人才专项(20232023hjcxrc0012);中国石油大学(北京)克拉玛依校区青年人才基金项目(XQZX20230037)。

摘　　要：在规格为Φ150 mm×3600 mm的负压差斜管-阀门实验装置上,通过测量和分析不同催化剂颗粒质量流率(G_(s))时斜管内轴向动态压力的特征参数,进行催化裂化装置斜管内催化剂颗粒的流动特性研究。结果表明:斜管蓄压能力随G_(s)的增大而增大,管内依次出现稀相分层流、密相分层流和填充流;斜管内的压力分布、主频、幅值、标准偏差与流态相对应,可用于流态的量化识别;当G_(s)=65.96 kg/(m^(2)·s)时,斜管内存在多流态,分别为过渡填充流、填充流、密相流;在斜管中部通入松动风,可以有效改善颗粒输送能力和斜管蓄压能力。On theΦ150 mm×3600 mm negative pressure gradient tube-valve experimental device,the characteristic parameters of the axial dynamic pressure in the inclined tube with different catalyst particle mass flow rates(G_(s))were measured and analyzed,and the flow characteristics of catalyst particles in inclined tube of FCC unit were studied.The results showed that the pressure storage capacity of the inclined pipe increased with the increase of particle mass flow rate G_(s)and the lean phase stratified flow and dense phase stratified flow appeared successively in the pipe.The pressure distribution,dominant frequency,amplitude and pressure variance in the inclined tube correspond to the flow pattern,which could be used for quantitative identification of the flow pattern.When G_(s)=65.96 kg/(m^(2)·s),there were multiple flow patterns in the inclined pipe,including transition packed-bed flow,packed-bed flow and dense phase flow.The aeration gas was injected into the middle of the inclined pipe to effectively improve the particle conveying capacity and the pressure storage capacity of the inclined pipe.

关 键 词：催化裂化 斜管 流态 动态压力 松动风 

分 类 号：TE624.41[石油与天然气工程—油气加工工程]