Press the handprint on the deed, Yang Baisui carefully put it in his arms, arched his hand and hurriedly left here, and hurried to select the backbone of the Ming Trilateral Infrastructure Bureau.

Zhu Shun picked up the report sent by the third disciple Jiao Miao, returned to the Hou Mansion in the industrial city to continue reading, and went to the sulfuric acid laboratory by the Chaohe River tomorrow.

Because after Jiao Miao and the students of Beijing Normal University experimented again and again, the mass production of sulfuric acid was finally realized.

The role of sulfuric acid is too much, as the mother of chemical industry, it can be used to make paper bleaching, used to make dyes, and can also be used to prepare ammonium sulfate in chemical fertilizers.

While generating a lot of economic benefits, it is also one of the prerequisites for the preparation of smokeless gunpowder.

The next day.

Zhu Shun came to the sulfuric acid laboratory with a few entourages such as the tower man, and the chemical engineering students in the Beijing Normal University Hall were still running around as usual, with a tight schedule.

At a young age, they began to bald, and when some chemical students said hello, several sore teeth fell out.

Fortunately, with the chemical protective clothing made of rubber and lacquer, the damage of sulfuric acid to chemical engineering students was greatly alleviated, which made Zhu Shun feel a lot more relieved.

Zhu Shun came to the dean's residence wearing a rubber lacquer chemical protective suit, and when he learned that Jiao Miao was not here, he asked a chemical student to take him to the sulfuric acid factory.

The sulfuric acid plant is located in the downwind section of the river, far away from the villages and county seats, so as to avoid the acid gas that drifts away from harming the people of Daming and the cattle.

Three miles away from the sulfuric acid factory, a pergola was built, and two disabled sergeants stood in it with flint smoothbore guns on their backs to prevent the Ming people and livestock from approaching.

If it weren't for the fact that it was against the laws of the Ming Dynasty to set up a pass without permission, Jiao Miao would have prepared to let people set up a pass in all directions in the southeast, northwest and northwest.

There is no way to set up a pass, so the disabled sergeant can only be held here with a flintlock smoothbore on his back.

Zhu Shun often walked around the laboratory of the seven disciples, and the two disabled sergeants recognized him, and hurriedly gave a military salute, all the while watching Zhu Shun disappear on the dirt road covered with a layer of snow.

Since the establishment of the coal washing plant, these disabled sergeants have been able to get some cheap medium coal, and it doesn't matter if they can't share it.

When Zhu Shun passed by the pergola, he glanced at the two sergeants, wearing thick cotton winter jackets with ruddy faces, and hot water boiling above the fire pit beside him, and he was quite satisfied with Jiao Miao's arrangement.

After walking for a long time, I saw the tall cement wall of the sulfuric acid factory, and when I walked to the gate of the sulfuric acid factory, the two disabled sergeants guarding the door were old men from the sulfuric acid laboratory, and they also knew Zhu Shun, so they hurriedly gave a military salute.

Zhu Shun nodded, walked into the workshop at the door, took a spare set of chemical protective clothing and put it on his body, and walked into the empty sulfuric acid factory.

According to the introduction in the report, the preparation method for mass production of sulfuric acid is called the lead chamber method, which is prepared directly on the hardened ground without the need to build a workshop.

The sulphuric acid plant does not have a single workshop except for some necessary warehouses and public buildings, but there are many buildings taller than two-story pavilions.

There are buildings that look like large chimneys in circles, and there are tall buildings that are boxy.

Jiao Miao was standing next to these buildings in a chemical protective suit, looking up at the top of the building, testing the various parameters of the lead chamber method.

Zhu Shun walked to Jiao Miao's side, Jiao Miao, and the chemical engineering students in the Beijing Normal University Hall didn't notice it, and they were still concentrating on recording various parameters.

Zhu Shun didn't go to build Jiao Miao, looked up, and looked at an industrialized masterpiece that Daming stood again.

The sealed tall round chimney is the denitrification tower, and the square building is the lead room.

The lead chamber method will decompose the moist sulfur dioxide and nitrogen oxide mixture, which is highly corrosive, and the 70% concentration of dilute sulfuric acid generated in this process is also very corrosive, and an anti-corrosion material must be used.

With the existing industrialization conditions created by the industrial faction in the Ming Dynasty, the best use is lead, and those square reaction chambers are built with lead, which is also the origin of the name of the lead chamber method.

During the reaction in the lead chamber, the oxidation and acidification of sulfur dioxide produce a large amount of sulfuric acid mist, which is a fine particle in an aerosol state.

It takes a long time to condense into a liquid, and enough reaction space is required to accommodate more sulfuric acid mist, so as to improve production efficiency.

A large amount of heat will be generated during the reaction, and the heat must be dissipated in time, and the surface area of the lead chamber must be increased in order to improve the heat dissipation efficiency.

Therefore, the lead room is relatively tall.

In order to provide enough raw materials for the lead chamber, the volume of the denitrification tower is also an optimal volume obtained after a lot of experiments.

A sulphur incinerator was also built next to the denitrification tower and lead chamber, and all three buildings were connected by pipes.

A chemical engineer walks over and adds saltpeter to the sulphur incinerator for thermal decomposition to prepare a mixture of sulphur dioxide and nitrogen oxides.

There was also a chemical engineering student standing nearby, staring at the pyrometer and observing the temperature of the gas mixture.

Zhu Shun stood in the distance and watched the two chemical students get so close, almost standing against the sulfur incinerator, and was in awe of their behavior of ignoring chemical hazards for the sake of Daming's scientific and technological progress.

Although they are a group of young people, they are much younger than Zhu Shun.

Although they are the disciples of Zhu Shun's disciples, the knowledge inherited from Zhu Shun.

Although their status is very low, in the eyes of the bureaucratic gentry is just a group of lowly children of the common people.

But they have to build a chemical system for the Ming Dynasty regardless of their lives, and at this time, in Zhu Shun's heart, they are actually no worse than Sun Chuanting, Cao Wenzhao and others.

It's just that one is on the battlefield, and the other is on the battlefield where you don't know who the enemy is.

The chemical engineering students who observed the temperature reported a temperature every other tea time: "360,410,470,320........"

With such a high temperature and such a dangerous chemical, Jiao Miao dared to stand so close with his chemical students, which was almost equivalent to taking his life to fill the chemical system of the Ming Dynasty.

It's not built, but it's a description that makes people feel numb on the scalp.

A bunch of lives and a bunch of lives were filled in.

Zhu Shun sighed, this time I must go back and increase the monthly income of the chemical engineering students, five hundred taels a month is not much, after all, many traitorous Jin merchants and Donglin Party can eat five hundred taels of silver for one meal.

After the temperature is reported, there is also a chemical engineer who controls the temperature by increasing or decreasing the firewood, which must always be kept between 300~500 Wen's degrees.

The mixed gas of sulfur dioxide and nitrogen oxides at 300~500 degrees Celsius enters the denitrification tower through the pipeline, and is in contact with the sulfuric acid containing nitrate in the denitrification tower.

Under the action of high temperature, the nitrogen oxides in the nitrate-containing sulfuric acid will be fully removed.

It decomposes into a mixture of sulfur dioxide, nitrogen oxides, oxygen, and water vapor, which floats to the top of the denitrification tower and passes through the corrosion-resistant lead chamber in turn.