延迟焦化抗焦液体增收剂的研究

RESEARCH OF ANTICOKING AND LIQUID YIELD BOOSTER FOR DELAYED COKING

以聚异丁烯丁二酰亚胺、苯并三氮唑、水杨醛为原料合成耐高温分散剂,并进行红外光谱和热重表征,结果表明合成产物为目的产物,且具有明显的耐高温性能。根据抗焦增液的原理复配得到抗焦液体增收剂,在延迟焦化模拟试验装置进行试验。结果表明:含有耐高温分散剂的抗焦液体增收剂效果明显优于含聚异丁烯丁二酰亚胺的抗焦液体增收剂;该抗焦液体增收剂添加量为200μg/g时,液体收率增加4.5百分点,其中汽油馏分收率增加1.24百分点,柴油馏分收率增加3.16百分点,蜡油馏分收率增加0.1百分点,气体收率降低1.58百分点,焦炭产率降低2.92百分点;各馏分族组成分析结果表明,添加抗焦液体增收剂后对液体馏分的族组成无明显影响,因此不影响延迟焦化液体产品质量。

A high temperature dispersant was synthesized from polyisobutylsuccinimide 1 H-benzotriazole and salicylaldehyde,and was characterized by IR and TG.The results showed that the synthesized product is the target product and has obvious high temperature resistance.According to the principle of anti-coke and increasing liquid,the anticoking and liquid yield booster was prepared,and was used in the delayed coking simulation test device.The results showed that the effect of anticoking and liquid yield booster containing high temperature dispersant was significantly better than that of polyisobutylsuccinimide.The addition of 200μg/g anticoking and liquid yield booster increases liquid yield by 4.5 percentage points,where the yield of gasoline,diesel and wax fraction increases by 1.24,3.16 and 0.1 percentage points,respectively.The gas yield of gas and coke deceases by 1.58 and 2.92 percentage points,respectively.The analysis results showed that the addition of anticoking and liquid yield booster has no significant influence on group composition of the liquid fractions;therefore,the liquid product quality of delayed coking is not affected.