Admitted to 985 universities as the first place, his university took part in the "Top Secret Mission" and created many first elected academicians in my country

He is known as "a legend with a story". He devoted his first half of his life to scientific research. He was one of the pioneers of my country's plate and shell structure theory and application research. At the age of 18, he participated in the research of my country's first Dongfanghong artificial earth satellite. He also participated in the research of high-end projects such as the Shenzhou spacecraft and the F-15 fighter on the Liaoning ship; at the age of 71, he took the lead in starting a business and entered the field of environmental science as the founder of the company, turning kitchen waste into "gold". A lifetime of struggle, a lifetime of legend, this is Liu Renhuai, an academician of the Chinese Academy of Engineering and an outstanding alumnus of the Department of Mathematics and Mechanics of Lanzhou University 1963.

was born in Chengdu, Sichuan Province in 1940, who was born in Chengdu, Sichuan Province in 1940. He has been an excellent student since childhood. In the year of the college entrance examination at the age of 18, he was admitted to Lanzhou University as the first place. This has been 20 years. "My golden age, from 18 to 38, has been in Lanzhou for 20 years. There are many stories in it. "Z5z

​​In the first year after entering Lanzhou University, because of his outstanding grades and outstanding performance, Liu Renhuai, who was only 18 years old, received a top-secret task arranged by the school: to participate in the "581 Project"- my country Development of the first Dongfanghong man-made earth satellite . And let Liu Renhuai be the team leader, with five numbers as the code, implement absolute confidentiality, can not discuss with anyone, and do not ask anyone questions. "When I received this task, I didn't know the theory of the project, nor did I have the teacher's guidance. I just knew it was important." After two years of doing this, Liu Renhuai was successful.

​​Time was fast, and graduation was in the blink of an eye. Faced with the retention of Zhang Jiabin, the party secretary of the Department of Mathematics and Mechanics at the time, Liu Renhuai chose to stay in school and became an assistant to his teacher Ye Kaiyuan.

​​In 1963, the 135 factory in Lanzhou, which manufactured aeronautical instruments, received the task of manufacturing low-altitude reconnaissance aircraft altimeters, but there was no professional talents to start. Liu Renhuai immediately recommended himself to take up the next topic-to study the corrugated circular plate that can be used to measure the altitude of the aircraft (this is the heart element of the altimeter, atmospheric pressure decreases as the altitude increases, and the diaphragm also deforms. Through the displacement change, it will Can calculate the flight altitude of the aircraft.) During the research on "Corrugated Circular Plate", he also published 3 articles on the nonlinear mechanics of plates and shells in China's top magazine-"Science Bulletin", 2 of which were with the teacher Published jointly by Ye Kaiyuan, one is his own. "At that time, most of the articles published in this magazine were great scientists like Hua Luogeng. So I am very grateful to President Jiang Longji, Mr. Ye Kaiyuan, and my alma mater, Lanzhou University, for giving me such conditions."

After Liu Renhuai went to Dingxi to go to the countryside to engage in "social education", he was forced to interrupt the study of "ban". It was not until a year later that he returned to his home in Lanzhou to continue his research. In April 1968, after combing through the world's mainstream algorithms one by one, Liu Renhuai used his brain to finally figure out the result. Compared with the experimental results, the error is less than 1%, which is completely suitable for the design of precision instruments. At that time, the error of other teams in the world was as high as 39%. Although a major breakthrough was made, the special circumstances at the time forced his paper to be hidden in the bottom of the box. While waiting for the opportunity, Liu Renhuai went to work in the Second Branch of Lanzhou Petrochemical Machinery Factory. Since September 1969, he has been working for half a day and doing scientific research. In the meantime, he made China’s first large-scale urea synthesis tower, China’s first high-pressure polyethylene reactor with the highest pressure (design pressure 2300 atmospheres), China’s first large-opening hydrogenation reactor, and China’s first high-pressure fixed Type heat exchangers, the decompression tower of China’s largest oil refinery...the miracle after another, even the leader of the military propaganda team said: "Teacher Liu, you have transformed well."

ushered in spring and achieved great results

, Finally ushered in the spring of science. In January 1978, the first issue of Chinese Journal of Theoretical and Applied Mechani published Liu Renhuai's "Characteristic Relations of Corrugated Circular Plate". Liu Renhuai cried with joy when he received the magazine transferred from Lanzhou University. This research is also evaluated by experts as has reached the international advanced level, creating a new field of mechanics. Since then, it has been widely used in China's aerospace, petrochemical and other engineering fields.

​​is not only making achievements in scientific research, Liu RenHuai also served as the vice president of Shanghai University of Technology (now Shanghai University), the president of Jinan University, and the executive vice president of Macau University of Science and Technology. He has served as school leader for more than 20 years and has made outstanding achievements. At the same time, in 1999, he was elected as an academician of the Department of Mechanical and Transportation Engineering of the Chinese Academy of Engineering, and in 2000, he was elected as an academician of the Engineering Management Department of the Chinese Academy of Engineering. He is also the chairman and vice chairman of the four societies of China vibration engineering, mechanics, and composite materials. His knowledge spans science, management, and amphibious academicians. He has served in many university leaders and government think tanks, and has more than 200 doctoral and master students. Such a shining resume is really impressive.

Old Jifu Tochiyong entrepreneurial

keep pace with the times and keep walking. Under the wave of "double innovation", the 71-year-old Liu Renhuai also joined the "entrepreneurship" army, as the founder of the company, began to enter the field of environmental science, researching the high efficiency and high grade of food waste called "urban minerals" With 39 registered patents at home and abroad, is the first to solve the problem of food waste conversion in the global academia and form a large-scale mass production integration technology. "Z4z

" Garbage disposal is a big problem that affects thousands of people. There is no way to landfill or incineration. Although my major is not environmental science, the scope of my scientific research for many years is very broad, from the sky to the deep sea. From mechanics to management, years of scientific research training tells me that after discovering problems, we should integrate our forces to solve them. "After several years of exploration, we finally successfully screened a kind of "pollution-eating yeast" that can degrade food waste. With this as the core, an advanced "joint biological processing technology" was built to treat food waste.

​​The core of this technology is to convert the sugar in the food waste starch into alcohol. Once it comes out, it will be 95% high-purity alcohol. It can turn all the starch in the garbage into alcohol in 36 hours, which becomes a good thing; At the same time, Liu Renhuai’s team can separate the grease with its unique technology and transform the industrial grease into detergents, biodiesel, etc. It can convert the animal protein with the hidden danger of homology pollution into safe and high-quality bacterial protein. "Urban Minerals" was developed.

​​On January 17, 2019, Liu Renhuai's team opened the world's first kitchen waste treatment demonstration production line in Xindu District, Chengdu. The first phase of the project has a daily processing capacity of 100 tons, an annual output value of more than 30 million yuan, and a profit of more than 9 million yuan, which is a high added value. "In the future, it will also expand to environmental protection equipment manufacturing, so that this technology will become an industry as soon as possible, which will not only benefit the environment, but also create economic value."

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​​Article source: Academician+, Lanzhou University Alumni Association Official WeChat, Guangzhou Innovation, Guangzhou Science and Technology Innovation Association