专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

3. 发明授权

US5120426A Hydrocracking process 失效
标题翻译：加氢裂化过程
公开(公告)号：US5120426A
公开(公告)日：1992-06-09
申请号：US631616
申请日：1990-12-21
申请人： Mark R. Johnston , Donald J. Gatza , Mark J. Woodward
发明人： Mark R. Johnston , Donald J. Gatza , Mark J. Woodward
IPC分类号： C10G47/00 , C10G65/10 , C10G67/02
CPC分类号： C10G47/00 , C10G65/10 , C10G67/02
摘要： An improved hydrocracking process, in a process for conversion of components of a heavy hydrocarbon feed to lighter, more valuable products, wherein the feed comprises foulant, the process comprising: (a.) contacting the feed with hydrogen, in the presence of a hydrocracking catalyst, at an elevated temperature and pressure in a hydrocracker, to produce a hydrocracker effluent comprising foulant; (b.) cooling and depressurizing the hydrocracker effluent to form a cooled, depressurized hydrocracker effluent comprising foulant; (c.) separating the cooled, depressurized hydrocracker effluent into the products of the conversion and an unconverted portion of the hydrocracker effluent which comprises foulant; and (d.) recycling, as effluent recycle to the hydrocracker, the unconverted portion of the hydrocracker effluent to the hydrocracker, wherein the concentration of foulant in the hydrocracker effluent is increased; the improvement comprising: (i.) partially cooling the hydrocracker effluent in a first cooler to a temperature at which the foulant remains soluble in the hydrocracker effluent to form a first cooled stream comprising unprecipitated foulant; (ii.) withdrawing a withdrawn portion of the first cooled stream and cooling the withdrawn portion to a temperature, below the temperature of the first cooled stream, at which foulant precipitates to form a second cooled stream comprising precipitated foulant; (iii.) removing the precipitated foulant from the second cooled stream to form a third cooled stream having a reduced concentration of foulant; and, (iv.) recycling the third cooled stream to the hydrocracker to reduce the concentration of foulant in the hydrocracker effluent.
摘要翻译：改进的加氢裂化方法，在将重质烃进料的组分转化成更轻，更有价值的产物的方法中，其中所述进料包含污垢，所述方法包括：（a）使进料与氢在加氢裂化催化剂，在加氢裂化器中在升高的温度和压力下，产生包含污垢的加氢裂化器流出物; （b。）冷却和减压加氢裂化器流出物以形成包含污垢的冷却，减压的加氢裂化器流出物; （c）将冷却的减压的加氢裂化器流出物分离成转化产物和包含污垢的加氢裂化器流出物的未转化部分; 和（d。）循环，作为流出物再循环到加氢裂化器中，将加氢裂化器流出物的未转化部分加到加氢裂化器中，其中加氢裂化器流出物中的污垢浓度增加; 改进包括：（i）将第一冷却器中的加氢裂化器流出物部分冷却至在该加氢裂化器流出物中所述污垢保持溶解状态的温度，以形成包含未沉淀的污垢的第一冷却流; （ii。）撤回第一冷却流的抽出部分并将取出的部分冷却至低于第一冷却流的温度，在该温度下，沉淀物沉淀，形成包含沉淀的污垢的第二冷却流; （iii）从第二冷却流中除去沉淀的污垢，以形成具有降低的污垢浓度的第三冷却流; 和（iv）将第三冷却流再循环到加氢裂化器以减少加氢裂化器流出物中污垢的浓度。

IPRDB

热门服务

关于我们

友情链接

联系方式