CAJ | 학술논문

以某炼厂的减压渣油为研究对象,分别讨论了超声输出电压(声强)、超声辐照反应时间,以及加入四氢萘(THN)对减压渣油黏度的影响;同时还研究了超声波与供氢剂四氢萘协同作用对减压渣油降黏及渣油成分变化的影响;实验考察了渣油降黏的稳定性,分析了对渣油经超声与四氢萘协同反应后凝点和500 ℃前轻组分体积分数的变化.实验表明,对于此减压渣油加入质量分数2.91%四氢萘,20 kHz超声输出电压250 V,在80-120 ℃辐照反应1 h后,测得渣油80 ℃时黏度降低了20%左右,且静置20 d黏度不恢复,500 ℃前组分增加了3.1%,凝点下降了3 ℃,表明超声与四氢萘的协同作用使渣油发生了裂解等反应,从而获得永久性降黏.
이모련엄적감압사유위연구대상,분별토론료초성수출전압(성강)、초성복조반응시간,이급가입사경내(THN)대감압사유점도적영향;동시환연구료초성파여공경제사경내협동작용대감압사유강점급사유성분변화적영향;실험고찰료사유강점적은정성,분석료대사유경초성여사경내협동반응후응점화500 ℃전경조분체적분수적변화.실험표명,대우차감압사유가입질량분수2.91%사경내,20 kHz초성수출전압250 V,재80-120 ℃복조반응1 h후,측득사유80 ℃시점도강저료20%좌우,차정치20 d점도불회복,500 ℃전조분증가료3.1%,응점하강료3 ℃,표명초성여사경내적협동작용사사유발생료렬해등반응,종이획득영구성강점.
The influences of ultrasound intensity, ultrasound irradiation time and hydrogen donor (tetrahydronaphthalene, THN) on the viscosity of the vacuum residuum were studied. The stability of the viscosity about the vacuum residuum was investigated. The changes of solidifying point and light components (500 ℃ below) of the vacuum residuum were analyzed after concerted reacting with THN added via ultrasound irradiation. The results show that when adding mass fraction 2.91% of THN, irradiating by 20 kHz ultrasound (output voltage 250 V) for 1 h at 80-120 ℃, the viscosity of the vacuum residuum decreases by 20% at 80 ℃, which is kept unchanged for 20 d. The light components (500 ℃ below) increase by 3.1%, and the solidifying point decreases by 3 ℃. It shows that the synergy of ultrasonic irradiation and THN added accelerates the cracking and decrease the viscosity of the vacuum residuum.