The preparation of sulfuric acid by the tower cylinder method is a variant of the preparation of sulfuric acid by the tower chamber method.

The tower chamber method is the most advanced preparation process for the preparation of sulfuric acid.

A corrosion-resistant lead plate is used to create a lead chamber, so that the collected gas reacts at high temperatures in the lead chamber to form sulfuric acid.

Because the gas composition in the exhaust gas is different, it needs to be cooled layer by layer and separated layer by layer, and finally the relatively pure sulfur dioxide is obtained, and then the sulfuric acid is finally obtained by means of spraying.

Therefore, a large number of lead plates are required to build multiple lead chambers that are sufficient for the sulfuric acid reaction to be completed, and a large number of lead plates are required.

But in the current base area, all kinds of raw materials are extremely scarce, and there are simply not so many lead plates to be found!

In history, in order to solve the problem of lead plates, the comrades of the military industry of the Eighth Route Army sharpened their heads and tried all kinds of methods, and finally inadvertently discovered that the glaze of the pickle jar of the villager had a corrosion-resistant effect, so as to take local materials and put the soil method on the horse, and finally successfully developed a tower cylinder method extraction process that is almost comparable to the most advanced sulfuric acid extraction process.

The tower cylinder method that Zhang Ran is now using is just picking up the wisdom of the old revolutionary Comrade Zhang Fang and Zhang Fakui in history, and it is not good to say, it is simply a bit of stealing the technological achievements of the revolutionary predecessors.

But Zhang Ran is sure that Zhang Fang, Zhang Fakui and other comrades, who are estimated to be about the same age as him, will not blame themselves for stealing their scientific research results!

Because they creatively invented the tower cylinder method under extremely difficult conditions, it was not for fame and fortune like those scientists decades later!

Everything these revolutionary predecessors did had only one purpose, that is, to use all means to contribute to the fight against the Japanese invaders, and they didn't care about the rest - not even their own lives!

Zhang Ran used the tower cylinder method they invented, in order to fight the Japanese invaders, but also to create sulfuric acid in advance, so that the soldiers could sacrifice less and kill more devils!

In terms of purpose, it is the same goal!

Therefore, he believes that even if these revolutionary predecessors knew, they would not blame themselves, and maybe they would thank themselves!

However, Zhang Ran still felt a little guilty in his heart, and hoped that when he had the opportunity to meet Comrade Zhang Fang and Comrade Zhang Fakui in the future, he would definitely invite the other party to have a drink.

People want faces, trees want bark!

Even if the goal is the same, but robbing other people's scientific research results is robbing other people's scientific research results, and whitewashing can't be whitewashed - he doesn't want to be like those guys who plagiarize other people's papers......

However, although Zhang Ran knew the tower cylinder method, he was only able to know.

The specific steps, he did not know at all.

Fortunately, he brought back Deng Fang, a chemical expert, from the provincial capital.

After he proposed the tower cylinder method, replacing the impossible enough lead plate with a corrosion-resistant clay jar, and Zhao Wanlin and others got the mother acid, Deng Fang was already confident!

People have repeatedly reiterated that he, a chemical expert who has traveled across the ocean, is not in vain - that shows that people still have two brushes!

With a few brushes, where do you dare to brag about this kind of cowhide?

"These clay vats are the reaction chambers, where the sulfur gas is directed, and these clay vats are used for the diversion and purification of the rest of the gas......"

Deng Fang looked rigorous as a scientific research expert and took Zhang Ran to climb up and down a pile of large tanks connected in series, while introducing the purpose of these cylinder chambers to him.

"Which cylinder does the extracted ammonia come from?" Zhang Ran asked.

"Don't you know how to count yourself?"

Deng Fang glared at Zhang Ran suspiciously: "The condensation points of various gases are different, it's easy to calculate—I saw that the head you said before is the Tao, the tower cylinder, the tower cylinder, can't this be calculated?" ”

"I'm busy like a dog every day, I have to take soldiers out to fight, and I have to care about the production of weapons, I have to worry about everything alone, where do I have so much time to calculate?"

Zhang Ran's eyes widened, and he couldn't help but be angry and said: "You are now in charge of this, and you can just answer if you can't - don't you see that I am so tired that I lose a lot of weight every day?" ”

Deng Fang actually looked a little guilty, and pointed to one of the cylinder exits with a dry cough and said: "Ammonia comes out of here, and after being absorbed with water, ammonia is formed, and after dilution and mixing, it can be used as ammonia fertilizer......

"That's right......"

Zhang Ran took out a look of your Deng Fang doing a good job, and the leader was very comforted, and at the same time secretly wiped a handful of cold sweat, and said in his heart that he was almost timid!

"In terms of reducing agent, I'm going to use coke, what do you think?" Deng Fang asked again.

Because he had not used this method of preparing sulfuric acid, Deng Fang was very distressed about what to use as a reducing agent, but all the conditions in the base area were very limited, so he had to conduct the same experiment.

Where does Zhang Ran know what is the best to use as a reducing agent - he knows the tower cylinder method, which he inadvertently saw from the web page.

With such a large amount of information on the Internet, he swept it away strangely, and after reading it, it was over, where did he remember so much?

If he had known that he would have crossed over, Zhang Ran felt that he would not have memorized this Laozi Tower Cylinder Method, and simply collected some information and went directly to build an atomic bomb, and then the loss of Tokyo and Nagasaki would be over?

But where can Zhang Ran tell Deng Fang this?

He could only cough dryly twice, and said with a look of leading the education technician: "Deng Gong, this tower cylinder method is also the first time for us, the conditions are limited, they are all crossing the river by feeling the stones, since you think of using coke as a reducing agent, then use coke to try it first, if the experiment fails, it doesn't matter, let's learn from the experience of failure, and start all over again - the reducing agent is not good, the big deal is the problem of the purity of the sulfuric acid produced, but it must still be sulfuric acid, right!" ”

"Of course, the reducing agent does not hinder the formation of sulfuric acid!" Deng Fangdao.

"Isn't that all there is to it?"

Zhang Ran said in a big way: "As long as it is sulfuric acid, even if it is not pure sulfuric acid and cannot be used to make nitrifying explosives, we can also use it to produce chemical fertilizer, right?" ——Looking for the reducing agent slowly, if it doesn't work once, it will be twice, and if it doesn't work twice, it will be three times, anyway, there will be no delay, I don't believe that with Deng Gong's level, I can't find a reducing agent that can prepare pure sulfuric acid! ”

This series of elimination and touting made Deng Fang immediately full of confidence again, and said proudly: "Of course, there are not many things that can be used as sulfuric acid reducing agents, I will test a few more times to prepare pure sulfuric acid, it will be a matter of time!" ”

"That's right, in short, Deng Gong, you do things, I don't worry!"

Zhang Ran was so full of style that he even raised his hand and almost patted Deng Fang twice on the shoulder to show his strength, but fortunately, he finally realized in time that his leader was really empty, and quickly took his claws back.

This scene, Wang Changtian, who watched it, was secretly happy on the side.

Zhang Ran glared at Wang Changtian stupidly, and then coughed dryly and pointed to the pipe connected by a pottery pipe on the tower cylinder and continued: "Deng Gong, I think these parts, will it be better to use glass?" If glass is used, it is convenient to observe the reaction of the flue gas, which can not only improve our sulfuric acid preparation level, but also collect data at any time and accumulate more experience......"

"I really didn't expect this - but the detachment doesn't have glass tubes for me or anything like that!"

When Deng Fang heard this, he immediately said as if he remembered something: "If you don't mention this glass tube, I almost forgot, there will be a lot of chemical experiments in all aspects in the future, your petri dish, beaker measuring cup and the like have to be brought back quickly, you don't plan to let me carry out all kinds of chemical research experiments with my hands so empty-handed, right?" ”

"Ahem, ahem, ahem......"

Zhang Ran almost wanted to pump his mouth, and now he was afraid of death, and when he saw someone, he was chasing his ass for something......

And it's all things that aren't easy to buy!

"Deng Gong, don't be impatient, I'll find a way for you immediately if you want, for now, you'd better overcome it first - rest assured, everything will be there, bread will be there, milk will also be there......"

Zhang Ran talked about the soup, regardless of whether he fooled Deng Fang or not, and immediately changed the topic: "By the way, did Xu Jiunian tell you how long it will take to dry the copper smelting furnace?" ”

When will the sulfuric acid be produced, Zhang Ran can afford to wait, the key is that those crops can't afford to wait!

Phosphate rock is over there, as long as the sulfuric acid is produced, it will start soaking directly, and the final precipitation solution will be the coarsest phosphate fertilizer......

The most difficult period is about to come, so we should make chemical fertilizer as soon as possible, so that the crops in the field can produce more grain as soon as possible, so that the villagers can store some grain at home and in the detachment first, and in the future, they will be able to cope with the most difficult stage relatively calmly.

"The copper smelting furnace has been drying for more than 20 days, as long as the coke is smelted on the coke oven side, copper smelting can be started here at any time!"

Deng Fang also knew the importance of food, and replied with a stern face.

"Anyway, speed up, time waits for no one!"

Zhang Ran said, anyway, when he thought of the food problem, remembered that the little devil adopted the evil rationing system, and starved to death I don't know how many people, his heart was heavy.

The sooner he produces more food, there may be fewer ordinary people starving to death in the future, which is his greatest wish.

Although he knew that his own personal strength could not save everyone, as long as he could save one more, it would be a great achievement for him!

"Deng Gong, how much did they give you? Can you give me a little bit of it first, I want to do some experiments! ”

Before leaving, Zhang Ran asked if he wanted to see if he could successfully test the primer first and lay the foundation for reloading the bullet - he had a headache when he thought of this situation.

"Mother acid is hard to get, and it can't be wasted!"

As soon as he heard this, Deng Fang looked vigilant, but in the end he said with a painful face: "I'll give you a little bit of ...... at most."