论文部分内容阅读
我厂常减压装置于1963年建成投产,年处理量为250万t原油。去年进行的大型技术改造项目之一,是要拆除原双斜顶式常压炉和减压炉,在原地重新打基础建新炉,本次改造总投资为1700万元,施工工期为37天。新设计的常压圆筒炉功率22.5×10~3kW,炉体直径φ9.785m,炉高44.715m,重量366.11t;减压圆筒炉功率13.46×10~3kW、炉体直径φ7.354m,炉高48.362m,重量为224.6t。重建新炉按常规的施工方法应待装置停产后进行拆除,重建基础。将炉子分部预制成炉底、炉体和炉顶并逐件安装,然后吊装对流室和烟囱以及耐热衬里的施工。这种施工方法,增大了停工期间的安装工作量和施工时间,从工期上看是不可行的。为了加快工程进度,我
Our plant atmospheric vacuum unit was put into operation in 1963, annual handling capacity of 2.5 million tons of crude oil. Last year, one of the large-scale technological transformation projects was to demolish the original double-bevel-top atmospheric furnace and vacuum furnace to rebuild a new furnace in place. The total investment for the transformation was 17 million yuan and the construction period was 37 days. The newly designed atmospheric pressure cylindrical furnace power 22.5 × 10 ~ 3kW, furnace diameter φ9.785m, furnace height 44.715m, weight 366.11t; vacuum furnace power of 13.46 × 10 ~ 3kW, furnace diameter φ7.354m, The furnace height is 48.362m and the weight is 224.6t. Reconstruction of the new furnace according to the conventional construction methods should be dismantled after the device is discontinued, rebuild the foundation. Prefabricate the furnace section into the furnace bottom, the furnace body and the furnace roof and install them one by one, and then hoist the convection chamber and the chimney as well as the construction of the heat-resistant lining. This method of construction increases the amount of installation work and construction time during downtime, which is not feasible from the construction period. In order to speed up the progress of the project, I