论文部分内容阅读
我厂提升管催化裂化装置原设计加工蜡油5×10~4t/年,油浆系统采用同原料先换热后冷却的流程,每小时损失热量5.44GJ/h,吨原料损失热量0.54GJ/t。由于油浆返塔温度用调节冷却器冷却水量的办法,操作困难。水量大,冷却器“挂蜡”;水量小,水大量汽化,经常憋坏冷却器。一九八三年开工以来,每年都要损坏一两台冷却器。一九八七年大修,我们将油浆换热系统进行了改造,改造的主要内容是:原料直接进分馏塔换热,取消原换热器、冷却器,原料从塔底和油浆混合后用油浆泵抽出直
I plant to enhance the catalytic cracking unit of the original design and processing of wax 5 × 10 ~ 4t / year, oil slurry system with the same material after the first heat exchange cooling process, loss of heat per hour 5.44GJ / h, tons of raw material loss of heat 0.54GJ / t. As the slurry back to the tower temperature with the cooling water to adjust the way the cooler, difficult to operate. Large amount of water, cooler “hanging wax”; small amount of water, a large number of water vapor, often holding bad cooler. Since its start in 1983, one or two coolers have been damaged each year. In 1987 overhaul, we will oil slurry heat exchanger system was modified, the main contents of the transformation: raw materials directly into the fractionation column heat exchanger, cancel the original heat exchanger, cooler, raw materials from the bottom of the oil slurry mixture Pump out of the pump straight