In fact, those who were burned to sell their contracts, except for the children who were not very sensible, the rest of the people were grateful to their husband and wife. Pen, fun, pavilion www. biquge。 info

Judging from their work, they are more diligent, and they are sincere.

Slaves can't build pyramids!

Zhang Guoan felt more and more that this was the truth.

I hope they will do the same in the future.

Zhang Guoan decided to open the door to the chemical industry by himself.

This time, he plans to use the reaction of sea salt and concentrated sulfuric acid to produce hydrochloric acid and sodium sulfate.

Its reaction formula is very simple: NaCl + H2SO4 (concentrated) = Heating = NaHSO4 + HCl (gas)

Concentrated sulphuric acid is used to bring the HCl in the solution to a certain concentration so that it can escape from the solution, and then condensed through a cast iron tube and flow into a large porcelain vase.

He had already made a wooden stopper for the caliber of the large porcelain vase, and after trying it, it was okay, but the water couldn't leak.

This hydrochloric acid is a good thing, don't waste it.

Then use carbon powder to reduce sodium sulfate to get sodium sulfide!

In this way, it will be possible for him to make a fuss about leather and sulfur dyes.

In fact, sodium sulfide can also be used to react with limestone to produce sodium carbonate and calcium sulfide, calcium sulfide is not small, it can be made into tanning depilatory, pesticide fungicide, luminescent materials, lubricant additives, and the preparation of veterinary drugs.

The most important thing is that he has to be the sodium carbonate!

You still need it for fired glass!

In fact, this method is difficult to produce continuously, step by step, step by step, and sulfuric acid is needed as raw material, which is seriously corrosive to the equipment. The product quality is not pure, the raw material utilization is not sufficient, and the cost is very high.

However, this is the most appropriate approach under the current conditions.

Now, he has obtained hundreds of kilograms of sulfuric acid on Xiaoliuqiu Island, but fortunately there are no dead people there. But there are those who have been burned.

Their product is dilute sulfuric acid, and Zhang Guoan is responsible for concentrating it into concentrated sulfuric acid.

He didn't have sulfur trioxide, and he could only get it by boiling it a little bit, which was too much to do.

This is a rather dangerous job, and with the evaporation of water vapor, there is also acid mist.

This temperature also has to be mastered, so he can only get on the horse himself.

During this time, he did not allow anyone to approach, but only did it himself.

It's okay. Quiet worries are superfluous.

He calculated with sodium hydroxide that it was almost 98 percent, and it could go into the cast iron reactor.

This cast-iron reactor is with a lid, and as mentioned earlier, the sealing effect is not very good.

Zhang Guoan thought for a long time and could only use wet clay to block it, and it was blocked repeatedly!

Anyway, so be it, he was busy alone for many days.

The people of the Great Song Dynasty did not dare to disturb him, they looked from a distance, and Zhang Guoan's bow was there to smoke and make fire. Wearing strange costumes and doing weird movements------ he's doing a formation!

As I said earlier. The officials of the Great Song Dynasty like to make some heavenly soldiers and heavenly generals, and the common people also like to listen to some absurd words.

Wu Dapeng didn't leave, and said to others that the sea road to Yindi Anguo was full of demons and monsters, and he was thousands of feet long. They can also believe to the death, and there are sailors who can take the initiative to testify.

After waiting for Zhang Guoan to finish a set of processes by himself, he still has an experience, and it doesn't feel as terrible as he imagined.

He wrote down the steps and prepared to train others to do.

Those twenty and a half sizes. He was not reluctant, so let those captives do it, and after working for a while, he could give them freedom.

Zhang Guoan also felt that other people's eyes were weird when they looked at him.

He said to Guo Beyu, a half-grown son, "What's wrong with you? Doing bad things again? ”

Guo Beyu said: "I have always obeyed orders------ they say that you are a heavenly master!" ”

Zhang Guoan just wanted to say the word "fart", but looked at his sparkling eyes and said: "Remember boy, there has never been a heavenly master in this world, a savior, everything can only rely on yourself!" You see, what point am I like a heavenly master? ”

"Actually, I don't think you are like a heavenly master, Wang Zheng said yes, I think you are a good person------"

Well, thank you for the compliment, I really like this.

At this time, they are almost done, and now is the best opportunity to develop the northern part of the stream.

If it drags on until winter, it's broken, and it's all raining.

They took advantage of the southwest monsoon and comfortably followed the coastline and went north.

On the 001 boat, Zhang Guoan looked at the green and dreamlike coastline, and couldn't help but praise: "What a treasure island!" ”

Now the blue sky, white clouds, snow-like waves, black and yellow sandy beaches, and the green coastline make up an unforgettable landscape.

Captain Cai Erlang also echoed at this time and said: "There is really a place for everything, just that deerskin is a lot of wealth, but unfortunately I don't know anything about tanning leather." ”

I don't know how to do it, this guy made friends with the leather merchant Wang Quan.

I'm envious of other people's business.

Wang Quan hadn't borrowed any depilatory and tanning preparations from Zhang Guoan, and directly used the ingredients prepared by the secret recipe he brought, and started to dry directly.

He really can't get used to the level of the so-called leatherman in the soldiers, he is too ruined, it is rare to have such a lack of arrows!

Seeing that he was in a hurry, Zhang Guoan divided half of him first, let him do it first, and then counted the money together.

He still wanted more, Zhang Guoan said: "Don't worry, there is a skin, and you must give some to Da Song." ”

Zhang Guoan thought, I have to think of all ways to support Jia Xiangdao, don't let history change.

If there is an upright and stupid person, it will not be easy to do.

Zhang Guoan's words, Wang Quan absolutely believes that there are still dozens of sambar deer in the account every day.

When he heard that the people here had eaten enough venison, he couldn't help but sneer, they were all born poor, and they had enough venison?!

This is more expensive than mutton, so eat your pork.

Wang Quan and the others originally wanted to start a gang by themselves, but when they saw the big canteen here, they decided to join the gang too, and they paid for their own meals.

Of course, it's all small things.

But the skin tanned by others is good, thin and soft.

Wang Quan was a little proud, he shook his skin and made a "pop" sound, belittling the level of the leatherman.

At that time, Zhang Guoan was a little unhappy, and when he was a little capable, he began to be awesome, which was forcing people to praise him.

Zhang Guoan said coldly: "Do you dye the skin?" ”

“------”

"If you know what alcohol dye is, I'll take you."

Alcohol dyes and oil-based dyes are generally used for leather dyeing, and the former is easier to proportion, and the latter has a certain degree of difficulty.

In the time and space of the Great Song Dynasty, there were some dyeing skins, but they stayed at the level of painting, and when it rained, it was all over.

That Wang Quan's eyes were full of begging at that time, and he praised in his mouth: "Zhang Tianshi teaches so-and-so!" ”

Bah! You are the Heavenly Master, and your whole family is the Heavenly Master!

Zhang Guoan said coldly at the time: "Let's talk about it when I come back from the northern part of Liuqiu------

At this time, Zhang Guoan wanted to hand over this leather dye product to Captain Cai Erlang to operate. (To be continued.) )