my scientific age

Chapter 128 The Cooking Method!
Study hard, grow strong, and stand on the world stage.

In Yu Hua, Hua Luogeng saw the shadows of too many people, these people are not ordinary people, but a brilliant top genius in the history of human civilization.

Ramanujan's mathematical talent, Newton's ingenuity, Galileo's eyes, and the shadows of too many people all overlap with Yu Hua.

Hua Luogeng clearly and supports Yu Hua's ambition.

The pond of Zhonghua is too small, only the world can accommodate it. The most important thing is that today's China cannot provide a stable growth environment and nutrition for the seedling of Yu Hua.

"The student thanked the teacher for his teaching." Yu Hua said solemnly after hearing this, bowing his head in a salute.

Hua Luogeng smiled: "Go to sleep, tomorrow we will continue to study "Theory of Real Variable Functions", complete it as soon as possible, and enter the "Mathematical Analysis" course. Remember, learning is like sailing against the current. If you don't advance, you will retreat."

"Students understand." Yu Hua nodded and responded earnestly.

Hua Luogeng, who was about to go home, suddenly remembered something and reminded: "By the way, the Tsinghua Journal will be published on April 4th, so keep an eye on it then."

Yu Hua nodded, wrote down the time in his mind, then turned around and left, returning to the second bedroom to rest.

late at night.

Dawn is approaching, a spring is dormant in the dark night, and the sky is about to be full of green.

……

After saying goodbye to deciphering red secrets, Yu Hua returned to his normal learning state. On Saturdays and weekends, he followed Hua Luogeng to study the theory of real variable functions, and constantly improved his mathematical level.

With the completion of the last class on the weekend, the theory of real variables is no longer an obstacle for Yu Hua.

After learning the theory of real variable functions, the thinking finite element analysis system Yu Hua has been building has been perfected to about 70% of the progress, and the remaining 30% is only a gap in mathematical analysis.

When the last vacancy is filled, Yu Hua will be able to establish his own finite element analysis system, which will greatly improve his engineering analysis and scientific research capabilities.

This is a dragon knife.

However, the process of casting the Dragon Saber is still long, and Yu Hua has another thing to do.

Xicheng District, the former temporary workshop, is now a small chemical laboratory.

"Sir, the laboratory has been built, and the instruments and materials are here, but the quantity of alcohol ether solvents and diphenylamine is small, so it is difficult to purchase, and the cost is 1250 yuan." Xu Rui pushed open the door of the small chemical laboratory , report the situation to Yu Hua Zhengsheng.

Yu Hua nodded, walked into the laboratory and looked around.

The whole laboratory is complete with water and electricity, and the interior is simple. There is a wooden workbench in the middle, a series of chemical instruments and materials are placed on both sides, and the stove is not far away. These instruments and materials belong to the list of materials, and the overall level is about The level of a chemistry laboratory in a junior middle school in Huaxia in later generations basically meets the requirements.

After a week of construction, the entire small chemical laboratory has been completed, with a series of basic chemical instruments, such as a tray balance and an alcohol blowtorch, etc., and all the materials used to configure the three types of gunpowder are all in place.

As for the cost, the materials, reagents and various instruments add up to a total of about [-] oceans. Since most chemical instruments cannot be produced domestically, these instruments are basically imported.

Import, equal to expensive.

Observing the situation in the entire laboratory, Yu Hua nodded affirmatively, turned to Xu Rui and said, "Very good, thank you for your hard work, Ruizi."

It has to be said that Xu Rui made a great contribution to completing the task within a week. You must know that these instruments need to be purchased from different places, which is time-consuming and labor-intensive, and finally the laboratory has to be set up.

The whole process is extremely cumbersome.

"Ruizi is not hard." Xu Rui shook his head quickly.

"Ruizi, boil a pot of water, put this lard into the pot and boil it." Yu Hua smiled, not too entangled, and arranged to Xu Rui.

Boil water and boil lard. This is the oldest and most effective method of glycerin extraction - boiling method.

The principle of the cooking method comes from the saponification reaction of high school chemistry. The oil is easily hydrolyzed in the presence of acid. As long as there is natural animal and vegetable oil and caustic soda, it can be extracted and produced by sight.

Glycerol, this is the first and most important step in the development of single-base propellant.

After the outbreak of the First World War, glycerin, which can be used to make explosives, was immediately listed as one of the strategic materials by various countries and strictly controlled, including China.

High-purity glycerin cannot be purchased on the market, but various oils such as lard, chicken oil, vegetable oil, etc. can be purchased, um, including the gutter oil flowing in Peiping City, etc., for their own production.

Of course, if the police find out, it will be more troublesome.

If you don't know the goods, it's okay, you can get in the way. If you know the goods, you will recognize that you are specializing in making glycerin. If nothing else, go to jail for ten days and a half months.

In the most prosperous Xicheng District of Peiping City, Yu Hua, who has a big heart, can make glycerol, and even single-base propellant.

Xu Rui followed the arrangement, turned around and went to the stove, added water and set the fire to a boil. After the water boiled, he put in all kinds of fat blocks and lard weighing about 20 kilograms, and boiled it on a high fire.

When the pot is steaming and the water is boiling, Yu Hua, standing next to the stove, put sodium hydroxide in roughly the same proportion, cover the pot to seal it, and cook together.

In the cauldron, sodium hydroxide and oil are heated to produce a saponification reaction, which is hydrolyzed into higher fatty acid sodium and glycerin. The whole process continues continuously. The water vapor with a temperature of about [-] degrees Celsius makes the whole chemical reaction more violent. Yu Hua occasionally opens the metal pot. Cover and stir the grease blocks with a wooden stick.

In addition, Yu Hua, who stayed beside the cauldron, held a notebook and pen in his right hand, and recorded the cooking steps and process in detail. This notebook will be a precious gift from Zhang San to Balu.

Time passed slowly. After a few hours, the grease blocks in the pot disappeared. After cooling, only a thick layer of sodium fatty acid and glycerin water remained on the surface of the pot. The glycerin content was about 20%, and the water contained various impurities. and aqueous sodium hydroxide mixture.

The boiling process has ended. Next, Yu Hua needs to make crude glycerin from glycerin water. After obtaining crude glycerin, distillation, decolorization and deodorization are carried out to finally obtain high-purity refined glycerin.

It was getting late, so there was no time to waste. Yu Hua and Xu Rui picked up all the soap on the surface of the cauldron. After they were cleaned, Yu Hua treated the glycerin water containing 20% ​​glycerol accordingly.

About an hour later, Yu Hua obtained the crude glycerin that had undergone decolorization and deodorization treatment, and the impurities were basically treated, and then poured into the distiller for distillation and dehydration treatment.

Not long after, the preparation of high-purity glycerol was completed.

"Phew... It's finally over. With glycerin, add sulfuric acid and nitric acid to make nitroglycerin." Yu Hua looked at the high-purity glycerin stored in the large-dose beaker and breathed a sigh of relief.

(End of this chapter)