公开(公告)号：US07976640B2

公开(公告)日：2011-07-12

申请号：US11391258

申请日：2006-03-29

申请人： Douglas S. Meyer ,  Glen B. Brons ,  Ryan E. Vick ,  Douglas P. Bryant ,  Gary L. Novosad

发明人： Douglas S. Meyer ,  Glen B. Brons ,  Ryan E. Vick ,  Douglas P. Bryant ,  Gary L. Novosad

IPC分类号： B04B9/00

CPC分类号： F28G9/00 ,  B08B3/08 ,  B08B9/023 ,  B08B9/032 ,  C11D7/24 ,  C11D11/0041

摘要： A method for the on-line cleaning of a heat exchanger used with petroleum process fluids which create coke deposits of asphaltenic origin on the exchanger tubes. The asphaltenes are removed by re-dissolution in a solvent oil of high solubility power for the asphaltenes. Certain asphaltenic crudes are useful as solvents in view of their chemical similarity to the asphaltene coke precursors; also useful are refined petroleum fractions such as gas oils which are also characterized by their solvency for asphaltenes. The solvent oil may be admitted to the heat exchanger following withdrawal of the process fluid and then allowed to soak and dissolve the asphaltene coke precursors after which the resulting solution may be withdrawn and the exchanger returned to use without being at any time disconnected from its associated process unit.

摘要翻译： 一种在线清洗与石油工艺流体一起使用的热交换器的方法，其在交换器管上产生沥青起源的焦炭沉积物。 通过在沥青质中具有高溶解度的溶剂油中再溶解除去沥青质。 鉴于其与沥青质焦炭前体的化学相似性，某些沥青质原油可用作溶剂; 还有用的是精炼的石油馏分如瓦斯油，其特征还在于其对沥青质的溶解性。 溶剂油可以在取出工艺流体之后进入热交换器，然后允许将沥青质焦炭前体浸泡并溶解，之后可以将所得溶液取出并且交换器返回使用，而不会随时与其相关的 处理单元。