Copper is softer than iron and is much less difficult to process. So Li Yuanba chose copper instead of iron. He couldn't even do this. Li Yuanba was very discouraged and was stunned for a moment, and encouraged him: "You can try it. How can you know if you haven't tried it? Money is not a problem." It's done if you can do it in Tianshui County. It takes a lot of time to run out. Now Li Yuanba is a busy man and has a lot of things to do.

"It's not a matter of money. Although our masters are good at blacksmithing, no one can be of this level." The middle-aged man refused without thinking. Looking at Li Yuanba with regret: "If you really want to do this, maybe someone can do it."

Li Yuanba was as excited as if he saw the light in the darkness and blurted out: "Who?"

"Master Ye! Master Ye is a skilled craftsman in the Sui Dynasty. It is not difficult to make this little thing. Unfortunately, others are in Chang'an, not in Tianshui County. Even in Tianshui County, the middle-aged man touched his forehead and said, "This is not in Tianshui County, nor in several nearby counties. If you want to be good, you have to go to Chang'an. If there are people in the weapons supervisor, it is best to go to the weapons supervisor, and the court will control the copper."

The copper used in the Sui Dynasty was not enough for minting coins. Once the price of copper exceeded that of copper coins. Some people bought copper coins and smelted them and sold them to make huge profits. Therefore, there are much less copper in the folk than iron, so blacksmiths have this statement.

Shaking his head, the middle-aged man poured cold water: "It's just that the weapon surveillance is not so easy to get online. There are several casting workshops in Chang'an, mainly cast iron, and even less copper utensils are cast. However, as long as your price is right, they will do it."

Zhang Deming was in the Weapons Supervisor. Ye Wanqing admired him very much and would not refuse to find them to make a copper tube. He wanted to make a convenience, but since it was unavailable, he could only try it out by himself. Li Yuanba said goodbye.

Back at the barracks, Li Yuanba found the blacksmith in the barracks and decided to make this condensate tube by himself!

But the blacksmith was also confused. He had never seen such a condenser before, so it was normal to do it.

Li Yuanba pointed to the picture and talked about the manufacturing method: "This condenser is divided into two layers. The layer inside is a round tube, which has to be made of copper. If the copper ingot is made into copper sheets and rolled, it requires a very high level. There is no blacksmith in Tianshui County, but the easiest way is to cast it. I have inquired about it. There are several workshops specializing in casting copper in Chang'an that can be completed. But I don't want to go to Chang'an to do it. It takes too much time to go back and forth, so let's try it ourselves."

The blacksmith was confused and seemed to understand, and said, "Prince, this round tube is not difficult, it is easy to cast. But this second layer is difficult, how can it be done?"

The first layer is steam inside, and the outside is the second layer, which is in contact with cold water. This is the only way to achieve heat exchange and achieve the purpose of cooling. The second layer is not only a circular hollow, but also closely connected to the first layer and cannot leak water. The technical difficulty is naturally greater.

Li Yuanba admired the extraordinary insight of the blacksmith and smiled: "Actually, this is not difficult. You can make it in half first, then cast it together, and then connect it to the copper pipe, so that it will be done. There is no special requirement, as long as there is no water leakage."

Even if it leaks, it doesn’t matter, as long as it doesn’t leak too much. After all, this is a normal pressure heat exchange, which is much simpler.

After this explanation, the blacksmith also understood, raised his thumb and praised: "Your Majesty, you have such a good idea. Here we are wide first and then narrow, what is the purpose of?"

Li Yuanba designed the condenser to be in a trumpet shape, and the outlet was an elbow. After condensation, the outlet was filled with strong wine. The reason why the entrance was designed to be in a trumpet shape was to be conveniently placed on wooden pipes.

OnePlus explained clearly. The blacksmith stared at Li Yuanba and asked, "Prince, is this equipment to refine?"

Li Yuanba admired the blacksmith's quick reaction and smiled and said, "This is an item used to purify wine. Then anesthetics can be made through simple methods, so that the injured brothers will not suffer in the future when they are treated."

"Then I thank you on behalf of my brothers!" The blacksmith clasped his fists and bowed to the ground with a happy look on his face. Li Yuanba's medical team itself allowed many soldiers to avoid infection and death. If there was another new item that could reduce the pain, it would be even more amazing: "I will go back and tell my brothers that the prince must make this item as soon as possible!"

After explaining, he gave the drawings to the blacksmith, loaded the goods, and left the blacksmith. Li Yuanba was extremely comfortable. The spirit that was originally interrupted by the condensation tube finally got on track again. Once the spirit was released, it was distilled many times to obtain high concentrations of alcohol. After a little treatment, it became anhydrous level, and this ether was not a problem.

Not long after, the blacksmith actually knocked out the condensation tube!

Now, Li Yuanba started to make ether.

He went to the winery in person, added a condenser tube to the new kettle, connected cold water, and started steaming the wine.

The wine that was steamed once was not very purity. At this time, Li Yuanba added quicklime to the wine.

A few days later, quicklime precipitated in the wine liquid, and the layer of clear liquid on it was high concentration of alcohol, but it was not anhydrous alcohol at this moment.

After another distillation, what you get is real anhydrous alcohol, and the alcohol content reaches 99.5%.

After loading the unhydrated alcohol with thread-sealed porcelain, returning to the military camp to take out sulfuric acid, Li Yuanba was about to start making ether.

He first took out a jar, which was customized by Li Yuanba to Yuan Tiancheng. The only difference between the jar with the spout downwards is that it has no spout and is completely sealed.

Clean it with a clean cloth, then pour the anhydrous alcohol into it. Add concentrated sulfuric acid, add two dried zeolites, and tighten the lid.

I brought a stool, put it in front of the stove, raised the fire, and sat in front of the stove to control the temperature. Now there is no thermometer, and the temperature is difficult to control, so I can only rely on experience.

Using alcohol to make ether is easy to undergo a disparity reaction, and the temperature is very important. It must be controlled at around 140 degrees to be ether. If the temperature is high, it will become ethanol.

He kept simmering on low heat. After a while, it was probably almost done. Only then did Li Yuanba move the jar away and remove the fire.

The natural cooling time is relatively long, and there is no way to speed up the cooling now, so I can only use this most primitive method. Li Yuanba didn't have to wait, but walked around.

It was not until after noon that Li Yuanba went to see the ether. When he touched the jar, it was as cold as a stone and it was already cold.

Open the lid, pour the ether into the basin, and separate it.

Sulfuric acid plays a catalytic role, and in theory it is not consumed, but in fact there is still some loss. There must be some contamination on the container.
Chapter completed!