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Under the influence of Han Yanxuan, Guogong Xingyuan irreversibly used steam power and built a boiler room like a fortress, like a cement crocodile crusher, and the steam power here is not a piston steam engine, but a steam turbine.

The first in history to be put into practical use was, of course, the piston steam engine. However, some researchers pointed out that the earliest steam engine was successfully trial-produced in Beijing in 1672 by the famous Jesuit Nan Huairen, and there was a primitive boiler installed in the center of the body, well, you can also think of it as a coal stove and a curved neck kettle. The steam power that Nan Huairen made was not complicated, the coal fire boiled the water in the kettle until it boiled and vaporized, and then sprayed steam outward, and the steam flow blew to the wooden impeller, and the wooden impeller whirred and rotated, and then drove the wheels of the wooden car to rotate, and the car flew away.

The reason why the steam turbine was put into practical use later than the piston steam engine is actually only because the steam turbine rotation is relatively high, and in the era when there is no gear reduction machine, how to control the degree is simply a big problem. Comparatively speaking, the degree control of the piston steam engine is relatively simple.

Mao Geng has now solved the problem of gear reduction, anyway, he initially has the ability to produce gear reduction, so he chose to go to the steam turbine first.

Some people are encouraged by the fact that cement production has been significantly increased since the introduction of steam turbines.

But after Zhao Lian came to Kaohsiung, he lived in the Guogong Xingyuan, and was immediately attracted by the various novelties in the Xingyuan. Tap water, squatting ceramic flushing system, waterfalls, fountains, including transparent pain-framed windows and spring sand, and so on, Zhao Lian looked here and touched there, and was excited for a while. Zhao Lian has been smart since he was a child, and his receptivity is far from ordinary people, and he can understand the truth of what new things can be understood after some speculation, and soon, those new things in the line can not satisfy his curiosity.

Here in Taiwan, the aborigines don't need Zhao Luan to give orders for the time being, and Taipei's gold mining is also smooth, and more and more gold is produced, but there is no need for Zhao Luan to worry about it. Taipei's city is not something that can be built in a while. In this way, Zhao Lian really doesn't have much to worry about. Zhao Lu is idle, after the freshness of the first two days of living in the Yuan, he is no longer satisfied to stay in the line, but has an irrepressible strong interest in what Mao Geng has done in Kaohsiung, and it cannot be said that Zhao Lu is a young man with pursuit:

"Mao Geng, you see, you not only have male disciples, but also bring female disciples to preach and solve their doubts. Benjue is also idle, how about learning from you? ”

Looking at the young emperor in front of him, he looked very studious, and the heart of the Taoist family was likely to be the future emperor, at this time, on a whim, he was infinitely curious about science, which should be a good thing, at least it was always beneficial for the Great Song Dynasty to develop science in the future.

Zhao Lian has already seen the boiler in Xingyuan, in Xingyuan Zhao Lian wants to see this and that, no one dares to stop him, but the boiler is one size smaller than the boiler on the cement side, when Zhao Lian looks, the operator first vents part of the pressure to ensure that there will be no accidents when Guogong arrives. But after seeing this small boiler, Zhao Lian said that he also wanted to take a look at the big guy.

Mao Geng had no choice but to make special arrangements, which was also partially decompressed, and as soon as Zhao Yan arrived, he hurriedly looked around, and then Han Yanxuan and Mao Geng left in a huddle.

"Benjue hasn't seen it clearly, Mao Geng, how does that crocodile crusher move? That's how powerful it is! ”

Zhao Lu still wanted to turn back and continue to see clearly, Mao Geng hurriedly coaxed the emperor with kind words:

"Guogong, in the past two days, I have asked people to make a model of a crocodile crusher, no! It is a model that includes a steam-powered crocodile crusher, and Guogong understands it when he looks at the model. ”

Han Yanxuan also helped on the side:

"Guogong, that's just a stone-smashing mechanism, if Guogong has Yaxing, it's better to go and see how to burn glass, firing glass is called wonderful."

Zhao Lu knew that everyone was worried about accidents, but it was not good to use it very strongly, not to mention that Mao Geng also promised to make a model for himself, so he borrowed the donkey road from the slope:

"Alright! It's okay not to look at the crocodile crusher, and it's okay not to look at the boiler here, but Benjue wants to see something else, so he can't stop Benjue anymore. ”

Mao Geng nodded again and again at the moment, full of promises. Mao Gengxin said: My little ancestor, as long as you don't insist on staying next to this first-generation boiler with an unreliable safety factor, you can see everything else.

In order to divert Zhao Lu's interest, Mao Geng had no choice but to lead Zhao Luan to see the fired glass.

When you come to the workshop where you fire glass, you can feel a hot air coming from afar, and when you enter the workshop, it is even more scorching, and the operators here are sweating, and some of them are simply shirtless, just because it is too hot.

Zhao Yan endured the scorching heat and came to the furnace of the crucible. The kiln in which the glass is fired is below the horizon, a kiln made of refractory bricks, on which four crucibles are arranged symmetrically, and the flames of white flowers are sprayed from the crucibles, which are the molten glass solution.

The operator stretches a scoop into the crucible, scoops a scoop of glass solution, and pours it into two iron rollers, and the iron rollers rotate to become a soft red plate, don't think that as long as it cools down, it is a piece of flat glass, no! It also had to be annealed while it was hot, and so far, continuous annealing had not been possible, so the efficiency was very low.

However, for Zhao Luan, it is already an eye-opener, a pile of sand and stones can be burned into glass water when burned in a crucible, and then rolled into a flat plate, and after annealing for dozens of minutes, it is a transparent flat glass. Of course, there are many follow-up auxiliary processes, such as grinding and polishing, cutting off irregular parts, and finally turning into square, standard size pieces of transparent glass.

That's how glass came about!

Of course, it seems simple, but in fact, if you don't know the formula, you can't fire glass at all, and if you don't know the formula, you can only stare dryly. Zhao Lian just watched the excitement, but in fact, where could he see the reason for it. Mao Geng also did not plan to explain the chemical and physical processes to Zhao Luan. Mao Geng felt that Zhao Lian didn't need to know this, and Zhao Lian was also interested, and he didn't get to the bottom of it.

Today's glass workshop, in addition to the production of flat glass, but also make all kinds of utensils cups and plates, curious baby Zhao Lian very seriously watched the process of casting all kinds of utensils cups and plates, when he saw the magic of glass blowing technology, his eyes were straight.

As for the mirror-making workshop, but not in one place, Mao Geng has no intention of taking Zhao Lu to visit for the time being, the mirror-making technology is a layer of window paper, which can be worn as soon as you poke it, Mao Geng feels that Zhao Lu will not force himself to show the core technology. Of course, Mao Geng didn't mean to guard against Zhao Lu, he just wanted to find another time to take Zhao Lu to see it alone.

Zhao Lian looked at the match making zuò again, and he was still unsatisfied, but in fact, Zhao Lian was most concerned about gunpowder. However, the gunpowder production was just beginning, and Mao Geng had to agree with Zhao Lu that after a while, after the production of gunpowder was slightly more formal, he would accompany Zhao Lu to visit.

The next day, Zhao Lian found a new object of attention, that is, the charcoal kiln that is said to produce a certain magical substance.

Speaking of which steam power is very important, Mao Geng is not very proud of the steam power, the most proud is the soil method to produce soda ash.

Mao Geng had a relative who was engaged in forestry research in his previous life, and he had done the work of making soda ash in the soil method.

The first step in the local method of soda ash production is to extract vinegar stone in the process of burning charcoal.

Zhao Lian is now in front of the charcoal kiln, listening to the charcoal operator explaining.

"After the charcoal kiln is ignited, the first thing that comes out is black smoke, this black smoke is useless, don't. After that, white smoke came out, and Mr. Mao said that it was mostly water vapor, and it was useless, so don't want it. Wait until there is a yellow-brown pungent and unpleasant smell of gas coming out, and this can be collected, please look at it, and collect it into a barrel with a tube. ”

When charcoal is burned, wood acetic acid can be recovered from the flue gas discharged from the charcoal kiln. The steam of wood acetic acid is a pungent and irritating gas, and only when the wood is pyrolyzed in the charcoal kiln, the wood acetic acid will be precipitated. The operator doesn't know this, but he knows how to do it, and that's enough for the operation.

Zhao Lian asked this and that, but the operator only knew what it was, not why, and the more Zhao Lian asked, the more confused he became.

Zhao Lu had no choice but to ask Mao Geng.

Mao Gengxin said, this is my secret that I don't pass on. However, Mao Geng had the heart to test the school to see if Zhao Lian had the potential to accept the science of chemistry, and decided to teach it.

Mao Geng explained to Zhao Lu like this.

In fact, the specific method of collecting and producing alkali is not complicated.

The first step, of course, is to collect the xyacetic acid gas, which is cooled to become a xyacetic acid liquid.

The obtained wood acetic acid separates the wood floating surface tar and the wood tar that sinks to the bottom, and then add quicklime to neutralize, observe the color of the reaction, the initial dark purple, then turn into dark black, and then turn into purple red, when the liquid surface produces a large amount of foam, that is, the neutralization is completed.

Heat and steam the filtered neutralizing liquid, stir constantly to remove the residual wood tar floating on it, and when the neutralizing liquid becomes gelatinous, switch to slow boiling, and stir constantly until the gelatinous liquid in the pot forms gray acetate (calcium acetate)

Acetate is soluble in water, and the aqueous solution of acetate is reacted with the aqueous solution of miscanthus nitrate (sodium sulfate) to generate calcium sulfate and sodium acetate, and after the calcium sulfate is filtered out, the obtained filtrate is filtered and concentrated to crystallize to obtain sodium acetate crystals.

Sodium acetate is reheated and pyrolyzed to obtain sodium carbonate black ash.

Sodium carbonate black ash contains impurities, which are dissolved, filtered, and crystallized with water to finally obtain pure crystalline sodium carbonate, that is, soda ash.

Zhao Lu seemed to be listening to a book from heaven, and after listening to it, his eyes were full of stars, and he had a look of worship on his face, and he said for a long time:

"I said Mao Geng, how can you understand so many mysteries!"