Sleepless in the dead of night. Pen, fun, and www.biquge.info

Thousands of miles away in Kunming, Yunnan Province, in a simple dormitory of the Southwest Associated University, the lights are still on.

The oil lamp was dim, but Mr. Zhang Dayu, who was the dean of the Department of Chemical Engineering of Southwest Associated University and a researcher at the Institute of Chemistry of the Academia Sinica, was still immersed in hard study.

This is a letter sent from Yongcheng, and it is accompanied by more than a dozen pages of introductory materials on the refining of gasoline from low-temperature dry distillation coal. Mr. Zhang Dayu was fascinated by these materials, as if a bright window suddenly opened in front of him, and light appeared all of a sudden.

Mr. Zhang Dayu graduated from Tsinghua University, and in the same year, he was admitted to study in Germany and the United States at public expense, and he gave up the quota to study in the United States, and went to the University of Dresden in Germany to study colloids and surface chemistry, and received a doctorate degree in engineering in 1933. After returning to China, he taught at Tsinghua University, successively as a lecturer and professor.

At the outbreak of the Anti-Japanese War, Mr. Zhang Dayu traveled from Beiping to Changsha, and from Changsha to Kunming, where he taught at Southwest Associated University and concurrently served as a researcher at the Institute of Chemistry of Academia Sinica. He shifted from basic research to technical and scientific research in petroleum and coal in order to contribute to the victory of the Anti-Japanese War, and at that time he was researching the manufacture of important defense materials from vegetable oil, and began to study methods for refining coal into gasoline.

The processing of liquid fuels from low-temperature dry distillation tar is a new technology just pioneered in the twenties of the twentieth century, and it was only put into actual production in 1933, with Germany being the most developed technology. Mr. Zhang Dayu only noticed this new technology when he was studying in Germany, and he didn't have much ready-made experience to learn from.

However, these dozen pages of information explain in great detail the process of low-temperature dry distillation coal tar and the description of related equipment. From a professional point of view, Mr. Zhang Dayu can basically determine that this is not nonsense, but indeed in line with chemical principles.

With these materials as guidance, it also solves the embarrassment of having no experience to learn from and no method to follow, and saves a lot of research and exploration time and manpower and material resources to be consumed. It's just that some of the details are still vague, perhaps deliberately, or perhaps the person who wrote the information is not sure.

The language in the letter was very respectful and respectful, and the final expression meant that he wanted to ask Mr. Zhang Dayu to go to the Yongcheng anti-Japanese base area to jointly study the relevant issues of manufacturing low-temperature dry distillation, and absolutely guarantee its safety, and also sent a sum of travel expenses with the letter. If Mr. Zhang Dayu can bring some teachers or students from the United Nations University to go with him, the travel expenses will also be fully reimbursed. The inscription is an unfamiliar name: Zhao Yurou.

Yongcheng? Zhang Dayu got up and flipped through the bookshelf, took out an atlas, searched for a long time, and finally found Yongcheng at the junction of Henan and Anhui. Occupied zone? Zhang Dayu was taken aback, in such an environment, can he study with peace of mind?

Walking back and forth a few times in the house, Zhang Dayu picked up the information and looked at it, he couldn't help his desire to serve the country and the pursuit of professionalism, he decided to ask the messenger tomorrow, and then finally determine the line.

……………

Sleepless in the dead of night.

Zhao Yurou yawned lightly, handed the written paper to Hao Jiaqi, and said, "Look at it, I think it should be like this." ”

Hao Jiaqi took it, didn't answer immediately after reading it, thought for a while, pushed his glasses, and said: "The retort type and the generator furnace type are not praised, but I think that Chief Yang is inclined to the gas generator, and the construction task given to the factory is the same." In a little more than a week, the first furnace could be built. As for the retort type, it seems to be biased towards the research aspect of small production, and it does not seem to be a large-scale construction. ”

"I think so, too." Zhao Yurou nodded and said: "Although it is not explicitly stated in the plan, it can also be seen that the coal chemical industry will be divided into two development directions, one is military industry and civilian, and the other is medicine." Well, there is a sentence in it that I remember very well, 'From coal tar to dyes to medicines, the Germans proved that this path of chemical synthesis was viable'. So—" She turned her inquiring gaze to Hao Jiaqi and raised an eyebrow.

"Sulfonamides!" The two men spoke almost together, and then laughed at each other.

Sulfonamides are very effective anti-infective drugs, which were developed on the basis of the discovery made in 1935 by the German biochemist Domagk, winner of the Nobel Prize in Medicine in 1939, and began to be put into clinical use in 1936.

When it comes to antibiotics during World War II, most people are likely to recommend penicillin, but sulfonamides also greatly reduced the mortality rate of wounded soldiers in World War II.

During World War II, every U.S. soldier was given a first-aid kit that hung from his belt, which contained sulfonamide powder, sulfonamide tablets, and a roll of bandages. Quickly sprinkling sulfonamide powder on wounds to prevent infection is an important part of the basic battlefield first aid that every U.S. soldier is taught. Sulfonamide powder and sulfonamide tablets are also important first-aid medicines carried by battlefield ambulances.

Of course, it is ideal to be able to produce penicillin, but without the specialized equipment and talents in biomedicine, the selection of high-yielding strains, the purification of penicillin, deep tank fermentation and other advanced technologies are impossible tasks at present, and even for a long time.

Therefore, Yang Tianfeng set the direction on sulfonamides, the equipment required is relatively simple, easy to manufacture, although the side effects are relatively large, but it is also a life-saving miracle drug.

Zhao Yurou and Hao Jiaqi's conjecture is right, the development of coal chemical industry is indeed two directions: military, civil and pharmaceutical. Benzene and other substances can be used as raw materials for explosives, and humic acids can be used as fertilizers; As for medicine, sulfonamides are the main ones at present, and there may be other drugs in the future.

"If sulfonamides can be developed, how many soldiers' lives can be saved on the battlefield of resistance against Japan!" Zhao Yurou looked forward to it, revealing a very fascinated expression.

"Hehe, I'm going to tell you to go to Yang Tianfeng again." Hao Jiaqi said with a smile: "Let him take out the production process of sulfonamides, and if there is the experimental equipment that has just been shipped, we will focus on this direction." ”

Zhao Yurou pursed her lips and said, "I don't know what to do all day long, so I run around." By the way, I've always wondered how he knows so much and knows so many things. ”

"Didn't you say that he had correspondence with his German friends?" Hao Jiaqi didn't want to bother guessing, rolled her eyes, and teased: "Maybe which German girl loves him and helps him steal information from Germany?" ”

Hmph, Zhao Yurou rolled her eyes and said angrily: "Even if the Germans are counted, he still has correspondence with the Japanese, and he is not afraid of being regarded as a traitor?" ”

"Wasn't he scolded as a traitor by us before?" Hao Jiaqi smiled bitterly and said: "But you see that he fights devils so hard, and others say that he is a traitor, I'm afraid even you and I don't believe it!" ”

Zhao Yurou thought about it, nodded helplessly, shook her head and said, "I don't understand him, it's really-"

"It's really loved, hated, isn't it?" Hao Jiaqi squeezed her eyes mischievously, "When we meet, I want to keep a straight face, and I don't think about it when I don't see it, you, how can I say it!" ”

"Nonsense." Zhao Yurou's angry expression was not very real in Hao Jiaqi's eyes, and she also closed her mouth knowingly, and people went to find Ma Yuming in the name of Yang Tianfeng's third lady, but the transfer of her family was done.

…………… (To be continued.) )