ZSM5/MCM41 composite molecular sieve was prepared by Nanoassembly method. The properties of ZSM5/MCM41 was characterized by XRD, N2 adsorptiondesorption, NH3TPD, SEM. The content of CuO loading, adsorption temperature, WHSV etc factors in composite molecular sieve desulfurization performance were investigated. The results show that, zeolite pore volume, pore size, surface area, acid strength can affect the desulfurization performance of the adsorbent. Under atmospheric pressure and a lower temperature, the desulfurization rate of 5% CuO supported adsorbent by activation treatment is nearly 90%. It was also found that ZSM5/MCM41 has a certain impact on distribution of olefin and aromatization content with adsorption desulfurization process in the FCC gasoline.
The investigation was related to the distribution of acid oxygenated compounds in Liaohe atmospheric residue (LHAR) and its slurrybed cracked residue. The LHAR was hydrocracked in pilot experimental device of state key laboratory of heavy oil processing. The reaction products was separate into <500 ℃ and >500 ℃(cracked residue). LHAR was separated into four fractions, six fractions respectively, as well as LHAR slurrybed hydrocracking cracked was separated into six fractions. The date of acid number in LHAR and its fractions were determined. The results show that the acid oxygenated compounds of LHAR are mainly distributed in resin. The acid oxygenated compounds of hydrocracking cracked residue are mainly distributed in heavy aromatic and heavy resin.
The influence of different catalysts on product distribution of residue hydrotreating in an autoclave with Tahe atmospheric residue (THAR) and Saudi Arabia light crude oil vacuum residue (ALVR) was studied. The results show that the catalyst activity and selectivity can be evaluated by the cracking conversion for unit coking (x1/xcoke) or the ratio of the cracking conversion to the unit condensation (x1/x2). It is consistent to the traditional understanding of residue hydrotreating. The catalysts influenced product distribution by providing active hydrogen atom to inhibit cracking of macromolecular radicals. There is different performance to inhibit coke formation in residue hydrotreating for different catalysts. The inhibition condensation sequence of catalysts is B>C>A and the maximum difference of the ratio of the cracking conversion to the unit condensation can reach 4.3. The influence of catalysts on residue hydrotreating was not only related to content and species of active metals, but also to the atomic ratio of hydrogenating component and surface structure of catalyst.
Calix ［4］ arene was synthesized by dealkylation reaction using ptertbutylcalix ［4］ arene and phenol as raw material in the presence of anhydrous AlCl3. Then 5,11,17,23four sulfo phenyl)azo calix ［4］ arene was synthesized by coupling reaction using calix ［4］ arene and pamino benzene sulfonic acid as raw materials. In the presence of tinhydrochloric acid, 5,11,17,23four sulfo phenyl)azo calix ［4］ arene was reduced to 5,11,17,23four aminocalix ［4］ arene hydrochloride. The synthesized compounds were characterized by thermal analysis, infrared spectrum analysis and UV spectra of the synthesized compounds. By using the method of synthesis of calix ［4］ arene ammonium hydrochloride yield is high, cost is greatly reduced.
Three oils were got from slurry oil with different processing technologies. Two process were conducted on the three oils with FFB device. The results show that the reaction conditions of raffinate oil 1 are the harshest, the second light oil, the last for the raffinate oil 2 under the condition of each highest target product yield; the distribution of cracking product of raffinate oil 2 are the best, the second light oil, the last for the raffinate oil 2，the target product yields are 69.35%, 73.85% and 79.76% respectively; the heavy oil mixed with raffinate oil 2 can improve the distribution of product and increase the yield of target product yield 2.47% and low the dry gas and coke yield preferably which are 0.25% and 1.61% respectively, which has little effect on the distribution of FCC product when mixed with light slurry oil and has a bad effect on distribution of product when mixed with raffinate oil 1.
The rare earth antioxidant was synthesized with 3(3,5ditertbutyl4hydroxyphenyl) propionic acid and lanthanum nitrate as raw materials. The antioxidant characterized by infrared spectroscopy, thermal analysis and fluorescence, was La complex. And the optimal synthesis conditions were as follows: the molar ratio of 3(3,5ditertbutyl4hydroxyphenyl) propionic acid to La(NO3)3•H2O 2∶1 and reflux time 6 h. The effects of rare earth antioxidant on the protective effect of NR vulcanizates were studied by mechanical property testing, infrared spectroscopy, thermal analysis. These results show that rare earth antioxidant had pronounced antiaging properties, which is higher than those of BHT antioxidant and equal to those of 4010NA. Besides, the synthesized rare earth antioxidant had no color pollution for rubber.
Seven different dodecatungstophosphates were prepared by using acidic ionic liquids and 12tungstophosphoric acid, and were characterized by XRD, TG and SEM. The result of XRD show that the molecular compound kept keggin structure. TG illustrate that they possessed good thermal stability. SEM result show that the surface structure of the catalyst is good. And their catalytic application in the oxidative desulfurization from fuel had also been investigated. The effect of reaction time, reaction temperature, the dosage of H2O2 were also studied. The sulfur removal (99.72%) was obtained under the following condition: reaction temperature 45 ℃，reaction time 1 h, n(S)/n（catalyst）=300∶1, n(H2O2)/n(S)=4∶1. After reaction, the catalyst is easy to separate, and can be reused 7 times after drying without obvious catalytic loss.
Basic nitrogen and sulfur contents in each fraction of fluid catalytic cracking diesel (FCC) from numerous refineries were analyzed by volumecutting method. The results show that sulfur contents rise and basic nitrogen contents decline with boiling point elevation in the FCC diesel. The comparison experiments of straightrun diesel show that both basic nitrogen and sulfur contents rise with boiling point elevation. In the FCC diesel, the basic nitrogen contents in the light fractions of 0%~60% (volume percent) account for 78.6%~86.9% of total basic nitrogen contents, and sulfur contents in the heavy fractions of 60%~100% (volume percent) account for 49%~56% of total sulfur contents. Those indicate that basic nitrides and sulfides concentrate in light fractions and heavy fractions, respectively.
With oil sand oil washing separation from oil sand of Inner Mongolia Zalaiteqi as the research object, using method of combining organic solvent extraction and water washing to research desliming sandout technology of oil sand oil from Inner Mongolia. The influences of the organic solvent types, agent oil ratio, temperature, time, water reagent concentration and other conditions on the process of the oil sand oil desliming sandout technology were investigated. The results show that using 1# solvent oil processing oil sand oil can make the 94% yield, under the condition of the organic solvent and oil sand oil quality ratio of 1∶1, water temperature 90 ℃, water reagent concentration 8%, separating time 25 min.
Through the separation of the group composition by acidbase extract，Xinjiang lowtemperature coal tar has been divided into three different groups including acidcomposition, basecomposition and neutralcomposition. The acidextract and baseextract were analyzed with GC/MS and elemental analysis. The results show that 74 kinds of compounds are analyzed from acid composition. All of them are oxygenated compounds and the content is 95.4%. The main compounds in acidcomposition are lowrank phenols, C3C4 alkylphenols, naphthols and indenols. 57 kinds of compounds are in basecomposition and 55 nitrogenous compounds in them. The content of nitrogenous compounds is 65.5%, mainly are phenylamine, quinoline, benzazole, pyridine and acridine.
The Nibased petroleum resin hydrogenation catalysts of high holding sulfur capacity were prepared by coprecipitation, which was added with Fe, Zn, Cu and Mg and other additives in the preparation. The dispersion and reduction performance of catalyst active component were charactered by the XRD and TPR technology. The results show that the additive can inhibit Ni particle to grow up and adjust the interaction of active component with carrier, which can improve the capacity of holding sulfur of petroleum resin hydrogenation catalyst. The high sulfur capacity of Nibased petroleum resin hydrogenation catalyst can effective prevent such as sulfur impurities contacting with downstream catalysts, ensure the downstream catalyst activity and prolong the life of catalyst.
The synergistic inhibition effect between cinnamaldehyde and 3methy4amino5mercapto1,2,4triazole（short for MACMT）on Q235 steel in the HCl solution was studied by polarization curves, EIS and immersion. The influence of concentration on the corrosion performance and inhibition mechanism was discussed. The experiments show that when both cinnamaldehyde and 3methy4amino5mercapto1,2,4triazole were 1 mmol/L inhibiting system proposed good synergistic effect, inhibition efficiency could improve to more than 93%, on the Q235 steel in 0.5 mol/L HCl, 1 mol/L HCl, 2 mol/L HCl solution. In addition, increasing temperature exerted small influence on the inhibition efficiency.
Using TX10 as surfactants，carbon nanotubes （CNTs） were dispersed by ultrasonic oscillation．The effects of ultrasonic oscillation on the dispersity and damage of CNTs were studied with TEM．And the stability was evaluated with settlement time of the suspension． The results show that the smaller diameter of the CNTs，the smaller of the bending section modulus，and the bending normal stresses caused by ultrasonic lateral impact force are greater，the damage caused by ultrasonic oscillation is more serious．As a result，the length of the smaller diameter CNTs decreased significantly due to the shearing．It is also the important factor that affects the dispersity of CNTs and stability of CNTs suspension．
The nonuniform solution exhibited as waterinoil suspension or emulsion produce for the admixture of oil and waterbased viscosity depressant, which brings some potential difficulties to the measurement of viscosity and thus evaluation of viscosity depressants. Agitating method is employed to solve this problem at present. However, this method can't well mimic the effect of pipe flow shearing on rheological behavior of wateroil blend due to the difference in agitating strength from limitation of experimental design. As a result, the evaluation result from this method is generally too far optimistic. For this reason, an improved evaluation method for the performance of waterbased viscosity depressant was proposed, which can simulate the shear and thermal conditions tightly as in a real field. The experiment results reveal that the method has a better performance and provide a solid basis for evaluation for waterbased viscosity depressants.
Before hot oil pipelines’ starting to convey,it is necessary to preheat pipes, and exactly forecasting the temperature of both medium inside pipes and surrounding soil during the process of preheating is the key to determine reasonable preheating time and the amount of preheating medium. Finite volume method was used to establish CFD simulation model to calculate heat transfer between underground pipelines and surrounding soil during the process of oilwater mixture preheating, and according to the analysis of temperature drop of the medium, a change rule conclusion of the temperature about medium inside pipelines during the oilwater mixture preheating period was reached, which can set corresponding oilconveyed technique and attain the goal of safety and saving energy.
For accurately identifying the mode of AE signal, the noise in the AE signal must be removed. The denoising results by conventional means of filtering are unsatisfactory, the denoising method by threshold on wavelet coefficients shows unique advantages. Aiming at threshold selection risky problem in the denoising method by threshold on wavelet coefficients, Kmeans clustering method was used to classify the highfrequency coefficients by wavelet decomposition, determining the removal threshold for the wavelet coefficients corresponds to the noise, then the wavelet coefficients were reconstructed to achieve the denoising purpose. Hardthreshold method and softthreshold method was applied on denoising method by threshold on wavelet coefficients for AE signal, threshold generated by Kmeans clustering approach and threshold generated by the improved Donoho method were respectively used as the threshold for the denoising method by threshold on wavelet coefficients, experimental results show that in the three indicators of signal to noise ratio, root mean square error and smoothness, the proposed method is superior to the improved Donoho method.
According to the function of mononuclear least squares support vector machine is easy to fall into local optimal value, the dualcore kernel function least squares support vector machine model method was proposed. This method uses Sigmoid kernel function and RBF kernel function which was linear weighted composing dualcore function, Removing the part of the smaller support vector sample method for improving the least squares support vector machine sparse characteristic, improving model operation speed, cross validation method was used to optimize the part of parameters. Finally the method was used to establish the gasoline dry point soft measurement model, compared with the standard support vector machine and the function of mononuclear least squares support vector machine. The results show that dualcore function least squares support vector machine model has higher calculation accuracy and better generalization ability.
The melt index of soft model was established based on mechanism modeling method because melt index of polypropylene dualloop reactors is difficult to be measured online. The soft sensing model was turned into Hammerstein model as a prediction model in order to realize the prediction model. It is achieved the predictive control of polymerization reaction process based on this prediction model. Finally, the results of simulation illustrate the effectiveness of this method.
