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以A石化公司引进国外进口渣油加氢原料自动反冲洗过滤器技术协议中的过滤器B和过滤器D为例,对两者进行对比分析。两者都具有全自动无人值守功能;原料设计最大加工量351m3/h,操作温度338℃,黏度3.2mPa·s,Fe含量10μg/g;过滤器B为列管式,过滤器D为花瓣式;在最大加工量时过滤器B流通率为1.12GPM/ft2,过滤器D流通率为1.08GPM/ft2;滤芯均为楔形丝网、材质316SS,过滤精度25μm,脱出率过滤器B为98%、过滤器D为99%;反冲洗油均为加氢常渣,温度248℃,黏度3.208mPa·s,反冲洗油流量过滤器B为85.2m3/h、过滤器D为90m3/h,单套过滤器每次反冲洗油消耗总量前者为8m3、后者为8.38m3;反冲洗间隔时间不小于2h,反冲洗启动压差0.1MPa;前者在球阀、电磁阀、执行机构等仪表配置数量上比后者稍多,价格上过滤器B比D高出15万美元左右。
A Petrochemical Company to introduce foreign imported raw materials hydrogenation of the backwash filter technology agreement automatic filter B and filter D, for example, to compare the two. Both have a fully automatic unattended function; raw material design maximum processing capacity of 351m3 / h, operating temperature of 338 ℃, viscosity 3.2mPa · s, Fe content 10μg / g; filter B tube type, filter D petals ; At the maximum processing capacity of the filter B circulation rate of 1.12GPM / ft2, filter D circulation rate of 1.08GPM / ft2; filter wedge-shaped mesh, material 316SS, filtration precision 25μm, prolapse rate filter B 98 %, Filter D is 99%; backwash oil are hydrogenated residue, temperature 248 ° C, viscosity 3.208mPa · s, backwash oil flow filter B is 85.2m3 / h, filter D is 90m3 / h, Single set of filters for each backwash oil consumption for the former total of 8m3, which is 8.38m3; backwash interval of not less than 2h, backwash start pressure 0.1MPa; the former in the ball valve, solenoid valve, actuator and other instrumentation Slightly more than the latter in quantity, the price on the filter B higher than the D 150,000 US dollars.