Under the expectant gaze of everyone, Lu Chen asked people to bring a few things over, and then put them on the table in front of everyone.

Inside, in addition to a fingernail-sized piece of charcoal and an ordinary sink, there were several powders of different colors.

There are black, yellow, gray, etc.

The crowd quickly recognized that the yellow was sulfur powder, the gray was scale powder, and the pale yellow was tide yellow.

There are two kinds of black powder, both of which look like charcoal, but if you look closely, they are slightly different, the most obvious difference is the particle size, the charcoal powder on the left near the massive charcoal is obviously more fine than the one on the right.

In addition to charcoal, other powders are either used for alchemy, or for arrays, or for medicine, or waste materials that have not yet been found to have any value, and the amount used is very small, and it is not a commonly used thing.

They were a little puzzled, and they didn't quite know why Lu Chen wanted to come out with these irrelevant things.

"Look, everybody."

Lu Chen said, and asked people to take out the fire fold and use some combustibles to ignite the coarser charcoal powder and sulfur powder.

It didn't take long for the two powders to start burning.

As expected, both powders emitted a pungent smell when burning.

Although it is very pungent, the smell of the charcoal powder is obviously heavier, and there seem to be many kinds of smells mixed in it, and the white smoke emitted by the burning of sulfur powder is also very uncomfortable, but the smell is relatively simple.

"Remember the flavors."

Lu Chen confessed, and then asked people to ignite another pile of charcoal powder.

As expected, the pile of charcoal powder was ignited, still releasing a puff of smoke accompanied by a pungent smell.

"Smell it carefully."

They did as they were told.

After a while, Su Ning's eyes suddenly lit up, and then she said with a surprised face: "The smell of this pile of coal... It seems to be lighter than that pile! ”

Hearing this, everyone's faces moved, and they sniffed carefully, and suddenly found that it was indeed as Su Ning said, the smell of the pile of charcoal that had just been lit was lighter than that of Fang Cai.

After perceiving this, Su Ning stared at Lu Chen, with a frenzy in his eyes.

The others were no better, and they all looked at Lu Chen with somewhat uncomfortable eyes, and those eyes were almost the same as the faith in the hearts of the pilgrims.

"Lord Lu, you succeeded?!"

Although Lu Chen only made the smell of charcoal burn a little lighter, this is undoubtedly a breakthrough from zero to one, as long as he masters the method, this charcoal may not be able to become a good thing like charcoal.

And this is the most critical step, they have worked hard in the Tiangong Division for so long, and they have also made various attempts, such as fire, washing, and feeding, but the results are almost ineffective without exception.

No matter how hard they rack their brains, what they can't think of is just what they can't think of.

The truth is often like this, when you don't realize it, you find it difficult, and when you find the truth, you even wonder why you couldn't find it in the first place.

From zero to one, the distance that seems to be very close is actually like a moat.

If Lu Chen was able to cross this moat, it would be of far-reaching significance to the entire Carboniferous Research, to the Tiangong Division, and even to the entire Great Xia.

Moreover, he is also a great official who advocates the rejuvenation of the country through things, and is the first favorite minister of the dynasty.

Even if he doesn't do anything, just there, he is also an existence of great significance to the cultivators of the path of things, not to mention that he himself has unique insights on the way of things, and he is not a layman who doesn't know anything.

Ability plus power, it is no exaggeration to say that if he can really realize the rejuvenation of the country, he may become a generation of sages in the way of things.

A sage that no one else can surpass!

Lu Chen smiled and shook his head.

"It's not that fast, it's just a little bit of a clue."

Hearing this, Su Ning hurriedly asked, "What's the clue?" ”

She was now extremely curious about how Lu Chen did it.

Everyone knows the nature of charcoal, according to her idea, if you want to make charcoal burn harmlessly, you have to find a way to suppress the harmful smoke, after all, everything in the world is mutually reinforcing, since there is that smoke, it stands to reason that there should also be substances that can absorb it.

As long as this substance is added to the coal, there should be a chance to solve the problem of the harmful smoke released when the coal is burned.

But Lu Chen obviously didn't add anything extra, just simply lit those finer coals, which seemed to be completely different from her thinking.

Facing Su Ning's extremely inquisitive eyes, Lu Chen did not answer her question immediately, but said: "Miss Su, and everyone, think carefully about what is the difference between the smell of these two kinds of charcoal burning, or what smell is missing. ”

Hearing this, Su Ning didn't ask directly, but slowly closed her eyes and thought carefully.

The others also fell into deep thought.

After a long while, Su Ning opened her eyes suddenly, but instead of looking directly at Lu Chen, she lowered her head and stared at the sulfurous powder in front of her that had burned to the point that only a pile of charred black liquid remained.

"It's the smell of sulfur powder when it burns!"

Everyone woke up suddenly.

"That's right."

Lu Chen chuckled.

"Miss Su is really powerful, she noticed it so quickly."

After getting Lu Chen's confirmation, everyone immediately understood that the purpose of Lu Chen's preparation of sulfur powder was to verify the smell that disappeared when the second pile of coal was burned, which was the smell of sulfur powder when it was burned.

Su Ning asked again: "In other words, the reason why the charcoal has a pungent smell is because there are substances such as sulfur powder, and Lord Lu, if you manage to remove the sulfur powder from the coal, there will be less harmful smoke in this pile of coal." ”

"Hmm."

Lu Chen nodded.

An official of the Tiangong Division asked urgently, "My lord, did you do this?" ”

Lu Chen didn't care about his rather disrespectful attitude towards Shangguan, he directly stretched out his hand, picked up a pile of pale yellow powder on the table, and a material called Xihuang, poured it into the sink on the side, and then stirred it a few times.

It didn't take long for the shiok yellow to melt into the water, giving the otherwise transparent water a pale yellow color.

Then Lu Chen poured some sulfurous powder into the tide yellow solution.

In the next second, a strange phenomenon happened!

I saw that after the originally solid sulfur powder fell into the tide yellow solution, it would not dissolve in the water, but it began to disappear gradually at this time, and the last bit did not fall into the sink, and it disappeared without a trace out of thin air.

Seeing this scene, Su Ning's eyes suddenly widened.

"It's... It's ......"

In the amazed eyes of everyone, Lu Chen poured some charcoal powder that had not been treated in any way except for crushing it into the sink.

The moment the black charcoal falls into the tide yellow solution, bubbles emerge on the surface, and then continue to sink to the bottom, and after a while, the bubbles disappear completely.

Lu Chen ordered someone to get out the washed charcoal, dry it with a secret method, and distribute it to everyone.

Everyone couldn't wait to ignite the charcoal, and found that the pile of charcoal that had been cleaned by the tide yellow solution was really the same as the pile of charcoal that was not very pungent smell, although there was still a little dizziness in the body when inhaled, but it was not strong, and it was obviously reduced a lot.

Su Ning was obviously a smart woman in ice and snow, and she was the first to realize the principle of Lu Chen's sulfur removal method.

Syllable!

"Wonderful!"

She slammed the table, her face full of excitement.

"First determine whether there is sulfur powder in the carbon, and then use the principle of mutual growth and restraint of all things, use the tide yellow solution to absorb the sulfur powder in the carbon, and before washing the carbon, grind the coal into powder, increase the contact surface of the coal and the tide yellow solution as much as possible, strengthen the sulfonation effect, and then as long as the coal powder is filtered out, you can get sulfon-free carbon!"

Speaking of this, a flash of inspiration flashed in her mind, and then she directly drew inferences:

"Moreover, since the sulfur powder in the coal can be removed, the other substances that will release harmful smoke when burned, it stands to reason that as long as the right method is found, they can also be removed one by one, and even go further, and extend this method of sulfonation, there are not many things in the world that coexist with interests and harms like coal, and we can completely take its essence to remove its dross!"

As she spoke, her eyes became brighter and brighter, and the gaze that looked at Lu Chen also revealed an indescribable sense of reverence.

"If through the way of studying things, like the harmlessness of stonecoal, we can delve into all kinds of new things that can benefit the world, and accumulate countless merits, and do so, who would dare to say that the way of learning things is just a miracle and a trick, not a great way?"

(End of chapter)