Research On Synthesis And Application Of Diesel Clean Agents

In this paper, we use four kinds of raw materials include polyisobutylene, para-tert-butylphenol, nonylphenol polyethenoxy ether and tetraethylenepentamine to compose polyisobutylene phenol amine,para-tert-butylphenol amine and nonylphenol polyethenoxy ether amine, served as clean agents of oil. The process is called Mannich alkali reaction. Then add organic acid to the additive to increase its solubility in oil. We measure the functional groups, thermal stability and pure dispersion effect of three kinds of improved additive by FIRT, TG analysis and simulate platform experiment. Then we choose 22 kinds of thermal analysis mechanism function to study the pyrogenation weight loss kinetic through the Coats-Redfern integral method of single calefactive velocity curves. This can help us choose the reasonable kinetic mechanism model for the pyrogenation weight loss process. Meanwhile, we can calculate the kinetic coefficient of activation energy E (KJ/mol) and frequency gene A.The conclusion shows that:(1) In this paper, we can find that Mannich alkali reaction occurs in ortho-position of hydroxyl from the infrared spectra of the three clean agents and their modified products, and the C12 and C18 modified products are the corresponding amide compounds.(2) In this paper, for the polyisobutylene phenol amine clean agents, the initial decomposition temperatures are about 320 degrees Celsius, the temperatures of maximum weightlessness rates are about 410 degrees Celsius, the terminate decomposition temperatures are about 450 degrees Celsius; for the para-tert-butylphenol amine clean agents, the initial decomposition temperatures are about 155 degrees Celsius, the temperatures of maximum weightlessness rates are about 250 degrees Celsius in the first stage and 350 degrees Celsius in the second stage, the terminate decomposition temperatures are about 380 degrees Celsius; for the OP4 amine clean agents, the initial decomposition temperatures are about 185 degrees Celsius, the temperatures of maximum weightlessness rates are about 260 degrees Celsius in the first stage and 350 degrees Celsius in the second stage, the terminate decomposition temperatures are about 380 degrees Celsius.(3) In this paper, the thermal stability of the C12 and C18 modified polyisobutylene phenol amine clean agents is similar; for the para-tert-butylphenol amine clean agents, the C18 modified products is about 25 degrees Celsius higher than the C12 modified products on the performance of the thermal stability; the C12 modified OP4 amine clean agents have the temperature of maximum weightlessness rate gap of 45.22℃in two stage, and the C18 of 75.35℃, so the C18 modified clean agents have greater effect.(4) In this paper, we can conclude from the simulative platform experiment that the different clean effect of polyisobutylene phenol amine clean agents to-20 # diesel oil with the order of PIB1300-N4,5-C12