In order to create conditions for training advanced chemical science and technology talents, with the help of the State Science and Technology Commission, the Chinese Academy of Sciences, the Ministry of Chemical Industry and relevant enterprises, Lu helped the school to set up experimental devices for thermodynamics and physical chemistry. In guiding graduate students' study, Lu insisted on the principle of integrating theory with practice, which enabled graduate students to innovate in theory and be verified in practice. The purification of ammonia synthesis gas by liquid nitrogen scrubbing is a patent of a few European manufacturers, and China has also spent a lot of money on the calculation method of liquid nitrogen scrubbing technology. However, this calculation method is an empirical formula, which can only be applied to the pressure range (about 70 atmospheres) of the ammonia plant imported from China. 1984 Lu pointed out that because liquid nitrogen washing is carried out at low temperature, according to the theory of quantum mechanics, hydrogen will participate in vapor-liquid equilibrium in both normal and secondary states. Lu He, a graduate student, verified the vapor-liquid equilibrium data of hydrogen-containing system at high pressure and low temperature, and the results proved that the theoretical data were in good agreement with the experimental data. This paper, entitled "Vapor-liquid Equilibrium of Hydrogen-containing System at High Pressure and Low Temperature", has been published in the international magazine "Fluid Phase Equilibrium" (1985). Because of its novel conception and originality, this paper has been extracted by American Chemical Abstracts, Physical Abstracts and Japanese Science and Technology Express, and colleagues from many other countries have also written to ask for a printed copy of this paper. This scientific research work has achieved outstanding results, and won the first prize of scientific and technological progress of the Ministry of Chemical Industry 1986. Since then, this scientific research work has continued to develop and a mathematical model has been obtained. The high pressure tower of a chemical plant in Zhejiang (pressure is 78 atmospheres) and the low pressure tower of a chemical plant in Shanxi (pressure is 22.5 atmospheres) are calculated plate by plate, and both of them have been fitted with high precision, which proves that the mathematical model based on theory is far superior to the calculation method of empirical formulas at home and abroad. Now the mathematical model has been input into the library of relevant design units, which has been highly valued.
After that, Lu instructed his master students to simulate the whole process of methanol washing of carbon dioxide and hydrogen sulfide in a large nitrogenous fertilizer plant, and verified it with foreign design data and industrial analysis data of the plant, and got a very accurate fitting. He also wrote a master's thesis, and wrote a paper "Study on Simulation Calculation of Methanol Washing Purification Process in Synthetic Ammonia Plant", which was published in China Chemical Engineering magazine. During methanol washing, a small amount of ammonia enters the solvent with the gas, and foreign designs have not calculated any material balance. They found that in production, the accumulation of trace ammonia led to the increase of water content in the solvent, which made the quality of the solvent worse and made the methanol loss rate exceed the specified limit when the gas was vented. Lu and two associate professors of Beijing Institute of Chemical Technology studied this. Based on the analysis of theory and production site data, the source and destination of ammonia and water are discussed and calculated according to the process flow. The results are basically consistent with the industrial data, so they wrote an article entitled "The ins and outs of trace ammonia in methanol washing process" and published it in the magazine Chemical Engineering. This article is highly praised by colleagues at home and abroad.