The so-called membrane method is called semi-permeable membrane osmotic pressure method.

It is an industrial production method that uses a semi-permeable membrane of polymer materials to separate mixed gases or liquids.

To give the most popular example, it is the membrane desalination method often engaged in by the Israelis -

In the early days, seawater desalination relied on boiling seawater distillation, which consumed very high energy. However, Israel and other Middle Eastern countries lack water and cannot afford such high energy consumption, so they have developed a polymer semi-permeable membrane.

The pore size of this membrane allows water molecules to pass through, but chloride ions cannot. Filtered with this membrane a few times, the salt in the seawater is removed and fresh water is obtained.

The same is true for membrane separation of air.

If a semi-permeable membrane can be created that is just enough for small molecules such as hydrogen and helium to pass through, and neon gas with larger molecules cannot pass through, then the separation of helium-neon is achieved.

This bypasses the technical difficulty of "the refrigeration temperature of the helium machine must be reduced to below minus 245 degrees Celsius, and the neon gas is liquefied and the helium is still in a gaseous state, so that the helium and neon can be separated".

The reason why Gu Biao knows this research direction is entirely because of his major in his previous life.

There are only a small number of coders in the world who studied computer science in their majors, and most of them are other engineering students, who found that programmers came to pay after graduation, so they learned a language and changed careers.

In his last life, Gu Biao studied electrical automation in Hangzhou Electrician, known as "the highest employment rate, but the lowest starting salary", and he knows a little about most of the majors in engineering physics.

Coupled with his serious study in college and frequent reading of cutting-edge scientific and technological journals, he knows much more industrial knowledge than people in the 70s.

Just because he can't do it himself doesn't mean he can't give directions to others.

Today's insight is also a glimpse he accidentally glimpsed when he read articles on polymer materials science in his previous life.

In later generations, the application scenarios of membrane method are thousands. Because of its low energy consumption, membrane methods are preferred when faced with any problem of separating gas and liquid mixtures.

To put it mildly, I don't even know the membrane method, and I still have the face to say that I am an engineering student in the 21st century?

Unless it's an engineering student who has been playing LOL for four years.

However, in 1977, the polymer technology of membrane method was still very new.

Gu Biao vaguely remembered that in the review of the paper he had read in his previous life, it was mentioned that at the end of the 70s, it seemed that only a few Israeli companies had developed semi-permeable membranes with such physical and chemical properties.

It's just that even these Israelis didn't think of using this membrane for the application of ultra-low temperature gas separation.

A lot of research in materials science is unintentional at the beginning.

It's not uncommon to research a material and test its physical properties, but not know what those physical properties are used for.

Therefore, Gu Biao's idea can at least be regarded as a "method invention".

Air Liquide's current method of producing helium should still be to burn off natural gas and hydrogen and remove water and carbon dioxide from natural gas with relatively high helium and neon content.

Finally, the temperature and pressure are lowered to the range where neon and other impurities have been liquefied and helium has not yet been liquefied, and the impurities are separated.

Gu Biao estimated that both the French and the Germans could build an industrial refrigerator equivalent to "minus 245 degrees and 1 atmosphere".

It is precisely for this reason that helium in the 70s was many, many times more expensive than helium in later generations, because it was too much electricity. In this era, it is absolutely impossible for helium to be used as a balloon in the hands of children, and children can only play with hydrogen balloons that are in danger of exploding.

If Gu Biao can find a semi-permeable membrane that "separates helium/neon" from the Israelis, then at least the working temperature of the helium making machine can be increased by 20 degrees, saving more than half of the electricity, and the cost of the machine will be greatly reduced.

……

He couldn't tell Qin Hui all these considerations in Gu Wei's mind.

He wasn't going to say that.

In this era, it has not yet been fully opened, and he said so much, and he personally did not reap much benefit.

With Qin Hui's authority, at most, he will give his father a half-year bonus, which is the sky.

Before the reforms, the efforts of technicians were not worth anything at all.

And it's not safe to talk too much at once, and it doesn't fit other people's level perception of him.

Therefore, he could only point slightly to the direction and point through the idea of the semi-permeable membrane method, so that Qin Hui was enough to complete the report submitted to the First Machinery Department, and then reach out for money and resources with the report.

As for the subsequent R&D work for at least one or two years, take your time.

In another 20 months, in December next year, the great 11th session will be held. Gu Biao believes that the helium machine in the factory has not yet overcome the difficulties by then.

After Qin Hui reported the plan and did it himself, he found that he couldn't figure it out, so he came to him again. When the time comes, wouldn't it be beautiful to sit on the ground and start the price.

“…… I know so much about it, I only learned about it when I went to the city library a while ago and occasionally saw two periodicals that introduced the progress of semi-permeable membrane technology for foreigners.

I don't know exactly who has this membrane, how to use it, and what impurities can be separated. But at least this is a more economical and technically achievable idea than the pursuit of ultra-low temperature separation.

Actually, I am good at English, and I often go to the city library to read books in foreign languages, including the death of former French President Pompidou and who his successor is. ”

Gu Biao said to Qin Hui with a sincere face.

And the final explanation also plugged the loophole of "why did you suddenly become smarter" for him.

Qin Hui's expression flickered.

He is in charge of production and technology, and he does not have as many bad intentions as those who are involved in politics. However, after weighing it, he felt that Gu Biao was indeed very useful.

In this era, those who know English and can read foreign literature directly are geniuses to look up to. Even the director of a large state-owned enterprise will be respectful.

"Tsk...... If you go to the city library to read books, you can have so many gains. Xiao Gu, you really made money, and you gave birth to a son who is so promising. Alas, maybe we have wasted too much time ourselves, and foreigners have developed so well. ”

Qin Hui said, sighing secretly in his heart, and accepted this setting.

He didn't think that Gu Biao's idea would be more awesome than that of the French.

With his imagination, at most, he felt that Gu Biao was just following the technical route that the French had already run out and copying it.

"Filling the domestic gap" is very good, as for "creating an international leading level", Qin Hui today can't even think of it.

He made up his mind, so he made up his mind and said on the spot: "Xiao Gu, hey, although the chaos is set right now, it is still not good to talk about money in the factory." I'll remember your contributions.

Well, I'll give you an extra three months of bonuses first. When this plan is reported, and the first machine department approves it, I will apply for you to join the queue, and divide the room first!

If the follow-up goes well, he will also contribute to the project, and when he graduates from high school, I will tell Director Chen that I will give one of the two recommended university places in the factory every year!"

The college entrance examination has not yet resumed, but that doesn't mean there are no universities – universities have been reopening since 1971.

Therefore, the most valuable power at hand of those subordinate large enterprises, and even central enterprises, is to recommend the children of the factory to go to college.

Qiantang Oxygen Concentrator Factory, there are also two places recommended to go to Zhejiang University every year, as well as one each of Jiaotong University and a certain University of Technology in Northeast China.

"Oh, Lao Qin, this ...... This is ......" Dad immediately overflowed with a grateful expression, "Lao Qin, the factory director, the matter of dividing the house can be delayed, if I can really let my family go to Zhejiang University, what section chief and what bonus, it is a trivial matter." ”

Qin Hui was very satisfied with his father's performance.

Sure enough, the most effective weapon in these years is to recommend going to college.

The score house is still valid.

It's a pity that Gu Biao was only happy for a short time, and then regretted it, and complained wildly in his heart:

"Hold the grass! I knew it was so cool, why did I travel back to 1977? How good is it to wear to 76 or 75? Now when I finish high school, the right to recommend you to go to college has long been invalid! I don't have to count on my own college entrance examination!"

However, after thinking about it, he calmed down again: If he had been reborn two years earlier, where would the "No. 1 Project" come from? How could he have made meritorious contributions?

It's just a paradox of fate.

"Thank you. He thought about it for a long time, and finally only squeezed out one thank you, and couldn't say anything else.

"You're rude! I'll shave you with big ears!" Dad was obviously dissatisfied with Gu Biao's attitude, and raised his belt again.

"Eh, Xiao Gu, what are you talking about with children? Qin Hui grabbed his father, "Then I'll go first, I'll finish the report in the next two days, send the central commissioner, and you will go to the finance department to get the money." ”

"Hey, factory director, talk about money or not, it's all about contributing to the country. It is the honor of our life to be able to participate in such an important project~"

Dad's answer is very politically correct, and obviously his consciousness is higher than that of Gu Biao, a "white dictatorship".