Coking was discovered many years ago. After hundreds of years of improvement, the external heating coking method that became popular after 1875 was taught. Professor Fengqiu drew a sketch of the process. Zhao Hu saw the waste gas at the top.

Using the pipeline spray method to absorb the chemical products, I couldn't help but nodded secretly. When I saw all the exhaust gas being discharged, I couldn't help but ask: "Master, I heard people say that the exhaust gas above can also be burned.

Why not guide it down?"

The teacher said: "That thing is too dangerous. Several coke plants have accidentally exploded it when using it. Now the conditions here are limited, so it is best not to use it. So we need to use more coal. Safety first."

After hearing this, Zhao Hu realized that the gases above were all extremely flammable and explosive gases such as hydrogen and methane. It didn't matter if they were used. If they exploded, there would be nothing left.

He couldn't help much with coking, but he was very interested in the recycled chemical raw materials. He turned around and told Mr. Qiao that the distilled ammonia was a good thing. Not only could it be used for fertilization, but it could also be used to make ammonium nitrate, which was also used as fertilizer.

It's dynamite again, don't be too valuable.

And there is also crude benzene in it, that is, benzene, toluene and the like. When it is fractionated, it can be made into yellow explosives. But after thinking about it, I rejected it. Fractionation of these dangerous chemicals often causes accidents. I remember seeing this before.

An article contains a five-page record of the personnel of our army who sacrificed their lives for the military industry. Among them were Bai Qiu, Han Qing and other female workers who were burned to death while fractionating gasoline. In addition, there were more cases of explosions and inhalation of toxic gases that made them disabled.

They are countless, and many of them have not even left their names. This shows how many heroes have devoted their youth and lives to the rear armament industry where the enemy cannot be seen!

Zhao Hu is not very good at chemical engineering and iron-making, but he knows the final method of our military's indigenous method. He gives the final answer as soon as he comes up, which also saves the time and manpower of the military engineers from constant testing.

For example, all the white iron produced at Liugou Iron Works now is too brittle, so he proposed two methods. One is the traditional stewing method, which tenderizes the surface of the white iron so that it can be used for cutting.

, but the rejection rate of products produced by this method is as high as 70%.

In addition, he also pointed out a direction, which is to combine the American black heart toughening process with the old-fashioned simmering method, hoping to create a new flame reflection heating furnace simmering process. Unfortunately, Lu, a smelting expert who graduated from Germany,

The tower hasn't arrived yet, so this craft can only be put aside for now.

In fact, what he doesn't know is that Jiao Fengqiu is not only good at iron smelting, but also proficient in making grenades, gunpowder, mercury fulminate, etc. He is really a rare person. But now that the staff is tight, he can only build a drafting team first.

, more than one person can use.

None of the mechanical king Shen Hong, firearms king Liu Guifu, chemical expert Zhang Zhen, and artillery shell king Zeng Rong, whom Zhao Hu looked forward to most, came. But regardless of whether anyone came or not, Zhao Hu had to get things done first.

Every day, as soon as he arrives at the arsenal, he teaches workers step by step how to make reloading ammunition. This aspect is also the current focus. Most of our army's weapons are still made in Hanyang. There is not much supply of 79 ammunition, so we mainly rely on self-reliance.

Young Master Qiao took the initiative to take on the task of making gunpowder. This work was also very tedious. Not only did he have to boil saltpeter, but he also had to make charcoal and purify sulfur. Every day, he was filled with a pungent smell. But this guy was not afraid of hardship and wanted to

The method is to turn the gunpowder into granules to improve the ignition efficiency.

There is no other way to use the percussion powder. There is no mercury fulminate now, so we can only use red phosphorus mixed with potassium chlorate instead. This potassium chlorate was left behind when the Jin army retreated. Moreover, this thing is a bit unreliable. It will get angry at every turn, so that

When installing the primer, everyone is on tenterhooks.

As for the semi-finished medicines that Zhao Hu put in the Xiyang warehouse and dragged back, they were taken away by the frontline troops as soon as possible. They couldn't wait for the arsenal to start construction. Each army has its own small repair shop, and it is impossible to reload a bullet.

question.

Young Master Qiao kept talking about making sulfuric acid all day long, because as soon as the sulfuric acid came out, he could make nitric acid. People who were used to playing with collodion would not be interested at all if he were asked to play with firecrackers again.

Sure enough, as soon as the first batch of large tanks arrived, Mr. Qiao took a few people to install the tank tower, leaving Zhao Hu alone in the dispensing room dumbfounding. In fact, he also knew that using the black powder as a propellant was only expedient.

Guess, this thing smokes too much when fired, and the barrel is easy to hang. You may need to clean the barrel after every dozen or so shots, otherwise, the gun will become useless after a few uses.

Out of anger, they simply stopped the production of black powder and asked everyone to select cartridge cases, punch primers, or open furnaces to smelt copper.

I came to the sulfuric acid plant and planned to work with Mr. Qiao to get out the sulfuric acid first. When I came to an open area from a distance, I saw pillars rising out of thin air from the ground. When I looked closer, they looked like lotus root joints.

,This is the first sulfuric acid plant of the Eighth Route Army.

Four large tanks were placed upside down in twos, and there was a spray tank filled with water on the top. The absorbed sulfur dioxide aqueous solution was concentrated into a dilute sulfuric acid tank from a long underground pipe below. The entire open space was filled with smoke.

The smell is pungent and has an indescribable stench.

Zhao Hu saw that Political Commissar Sun was also directing production, so he quickly found him and asked him to apply for funds from Commander Ni, and quickly comforted the people around him. With such heavy smoke every day, the tips of the wheat seedlings next to the open space were withered and yellow.

If it goes down, it would be strange to be able to produce food.

There is nothing we can do about it. We can’t expect to remain environmentally friendly under such conditions, right?

Young Master Qiao took a large glass bottle, walked into the sunshine, and pointed the bottle towards the sun, his face full of intoxication.

Zhao Hu saw that there was half a bottle of transparent liquid in the bottle. The thick consistency showed that it was not water.

"Young Master Qiao, did it happen so quickly?"

When Qiao Zhinan saw that Zhao Hu was coming, he immediately smiled and said: "Master, what else can't be solved if I take action? This is not a complicated thing. It doesn't even rely on chemistry. Look, it's 50% rare."

I'm going to concentrate the sulfuric acid again so that it can be used to make nitric acid. By the way, the smell of this stuff when concentrated is so strong that even the workers can't stand it. When will your steam boiler arrive? I'm impatient to wait."

"The boiler has been shipped from Jincheng. By the way, let's put the nitric acid in first. Let's discuss it and install the three small cauldrons brought by Xi Yang."

When Young Master Qiao heard that he could use a small cauldron, he quickly turned around and put down the sulfuric acid and took out a piece of paper: "Look, I have even drawn the process diagram. There are three reactors in a row. If there is no steel platform, we will use it."

Bricks are laid, and vacuum is used uniformly on top..."

Zhao Hu looked at the drawings, shook his head and said: "These are the only three treasures we have. We can't place them so far away. You have to know that once this thing explodes, it will be gone forever."

Qiao Zhinan said: "With the boiler and these three small cauldrons running, I can produce two tons of sulfuric acid a day. By then, the nitric acid will be huge, haha."

"That's a good idea. I can only give you two, and they have to be used in rotation. Let me tell you, there are not many spare parts, so you have to take it easy. If it breaks, I won't have anywhere to buy it."

"What are you going to do with the other one?"

"I'm going to purify alcohol on that one."

Young Master Qiao suddenly laughed: "Haha, I knew you were going to make mercury fulminate, right? Negative pressure distillation is good, there is no danger."

The three small cauldrons obtained from the Taiyuan Arsenal are considered to be tall and powerful here. The reducer does not have a cycloidal pinwheel, but a gear type driven by a belt. In addition, there are some lined pipes and a few water pumps.

Well, there is not much shortage of water pumps. Every coal mine has them, and I have bought more than a dozen of them now.

The most expensive ones are a few enamel condensers. Without these, no alcohol can be evaporated and would have been taken away by the water pump.

The two of them studied for a while and planned to find some open space and place the three equipment far away. They would rather spend more on pipes and lose some heat than be dumped in one pot.

However, in order to install the small cauldron, a platform is required. It’s so cold now that even if you buy cement, you can’t lay bricks, and there’s no time to wait. The two looked at each other and suddenly said at the same time: “

rail!"

Comrade Xiao Qiao thought about the railroad tracks and became worried again: "It's not enough to have railroad tracks alone. Do you have a welding machine?"

"We have a welding machine!" A voice came from far away. Commander Ni brought a group of people and said as he walked: "Commander Nie sent us a welding machine and two small boilers, but the conditions are not low.

, they want one thousand kilograms of explosives."

When Young Master Qiao heard this, he patted his chest and said, "No problem, as long as the small cauldron is installed, we can produce five hundred kilograms of explosives a day!"
Chapter completed!