文档介绍：摘要
本次设计采用夹点技术法对某石油常减压系统的换热网络进行设计。重点研究了在不考虑热损失及热熔流率是随温度的变化的较理想情况下的换热网络合成。
首先假设最小温差△Tm=25℃,采用计算机程序精确、快捷地确定了各组的夹点位置以及最小公用工程消耗。然后采用Orign绘制了最小温差下的温焓图,由于阈值点之下不再适合运用夹点技术法设计,因此用程序计算△tm=25℃下的夹点位置和最小公用工程消耗,计算出各组的总费用并绘制总费用曲线,然后进行最小温差为25℃时的换热网络流股匹配,最终确定换热器台数,换热终温,需要公用工程需求。
关键词:换热网络;石油常减压;夹点技术。
Abstract
This design adoption clips some technique method to the some petroleum often the pression system changes the work to carry on the design. The terminal point studied to change the work to synthesize under the condition of taking no account of the hot loss and hot to flow rate being with the variety of the temperature more ideally.
Suppose the minimum difference in temperature △ tm first=25, a great deal of adoption calculator procedure calculation, accurate, because the value of 阈 order under no longer in keeping with clip to order the technique method design with cloud. Therefore according to the front of method, compute the △ tm with the procedure=25℃s under of clip some position and minimum to use the engineering to consume,Then carry on the minimum difference in temperature to flow to match for 25 works of change of hour of ℃ss.
The result needs pedestals to change only the hot machine and a the pedestal heating apparatuses can immediately carry out the target that the decrease invest the total expenses under the premise that attain the craft request.
Keyword:Change the heat;The petroleum is often the pression;Clip some technique;
目录
1前言 1
1
1
2
2
2
4
5
6
7
7
8
2设计任务 9
9
14
14
15
建立所确定最小温差的总组合曲线 17
按夹点技术法设计能量最优的换热网络 17
换热网络的调优 17
方案采用绘图板绘制出各可选换热网络图 17

3设计计算过程 18
物性数据计算 18
18
、相对密度、特性因数 18
19
22
22
25
31
.