After the start of the heating furnace in the upstream station of the hot oil pipeline, the unsteady trend of the oil temperature in the downstream inlet station will affect the hot⁃washing operation of the pipeline before the pigging and the emergency treatment for abnormal shutdown. Accurate prediction of unsteady oil temperature trend changes can effectively improve the safe operation of pipelines and energy conservation and consumption reduction. A deep learning framework is adopted to take the unsteady process of upstream and downstream oil temperature as the mapping relationship from sequence to sequence, and the classical seq2seq algorithm of Recurrent Neural Network (RNN) was used to establish a predictive model of unsteady oil temperature. Through the correlation analysis, the parameters such as the unsteady oil temperature, pipeline flow and ground temperature in the upstream outbound station are selected as the model influence factors. In the SCADA system database of the HY hot oil pipeline, the relevant parameter historical data is downloaded as sample data, and after the data is preprocessed, the model is trained and tested. The error between the predicted value and the true value is ±0.2 °C, the correlation coefficient R and the root mean square difference RMSE are 0.96 and 0.99. At the same time, the verification model can effectively predict the unsteady oil temperature of the downstream station, which has high accuracy and good generalization.

In the process of producing cold-rolled sheet, the properties of rolling oil,such as lubrication,and emulsion stability are essential factors. This study selected pentaerythrite oleate and mineral from LiaoHe as the base oil. Then adding in diffrernt kinds of nonionic complex emulsifying agent, EP-antiwear additive, antirusting agent, foam suppressor and preservative to the water of 90%~95%, and emulsifying. This experiment used our current industry standard for the reasearch on emulsion stability. The results show that the stability of cold rolling emulsion of the esters and ethers nonionic emulsifier to the base oil is better than a single species of esters or ethers compound system; Final products meet requirements of the emulsion industry standard: After 24 h, 5% emulsion oil separating soap volume is 1.0 mL, 2% emulsion oil the bubbles are completely eliminated in 5 min.

The high viscosity of heavy oil and studies the effect of construct and combination of oil-soluble viscosity reducer on viscosity reducing effect were discussed. The results show that unary-polymer has viscosity action and poor viscosity reducing effect, binary-polymer has definite raise and viscosity reducing rate exceeds 30% in 20 ℃, terpolymer containing twain or more polar functional group researches has preferable effect and viscosity reducing rate is concordant with 70% in 20 ℃, and advisable combination in difference viscosity reducer can display synergism and raise the viscosity reducing effect obviously.

Molybdenum carbide supported on Hβ zeolite catalysts were prepared by the method of temperature programmed reduction used the n-pentane as a carburizing agent and characterized by XRD. Isomerization of n-heptane over the Hβ zeolite supported molybdenum carbide catalysts was carried out in a fixed bed. Effects of reaction parameters on the products distribution were investigated and the mechanism of n-heptane isomerization was discussed.The results show that isomerization of n-heptane is according to dimerization cracking mechanism and metal cyclobutane mechanism. Major isomerized products of n-heptane are methylhexanes. Simultaneously, dimethyl pentanes, cycloparaffins and some cracked products are produced. The reaction temperature do not influence the isomerization to methylhexane obviously in 533～553 K, but increased temperature can promote the cracking reaction. Arising of hydrogen pressure inhibit both isomerization and hydrocracking. Decreased space velocity is benefit to the conversion from methylhexanes to imethyl pentanes. The increasing hydrogen to hydrocarbon ratio inhibited isomerization, but had no effect on cracking reaction.