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英语翻译This indicates a reduction of the economic advantage fro

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英语翻译
This indicates a reduction of the economic advantage from increased steam consumption.Consequently,any immoderate
increase of the relative steam consumption is inadvisable,all the more since,as shown by calculations,the effect of steam
consumption on the quality of the residue also drops off sharply.
The proposed program of technoeconomic evaluation of variants of vacuum tower operation has the advantage that it
includes process-variable,hydraulic,and strength calculations of the tower; also,it takes into account the discrete nature of
the standardized sizes of equipment as well as regional prices and their timewise variation.Results obtained by means of this
program can be used in selecting an economical variant of process unit operation.
英语翻译This indicates a reduction of the economic advantage fro
这表明随着蒸汽消耗量的增加,经济效益也在减少.过度增加蒸汽的相对消耗量是不可取的,尤其通过计算显示,蒸汽消耗量对残渣质量的影响也会急剧下降.对真空蒸馏塔操作变量的技术经济评估方案的优势在于,它包含工艺变量,以及塔的液压和强度计算,同时又考虑到设备标准尺寸的独立性,局部价格,顺时变量.该方案的评估结果可以用来挑选单元操作的经济型工艺变量.