"With coal?"

As soon as Liu Jin's words fell, Emperor Hongzhi, Liu Jian, Xie Qian, and Li Dongyang were all slightly dumbfounded, thinking that Liu Jin would be able to come up with some good solution, but they didn't expect Liu Jin to come up with such an idea.

"After all, he's still too young, doesn't he know that the smoke from this coal is poisonous?"

Emperor Hongzhi looked at Liu Jin and couldn't help but shake his head slightly.

"What he said about the Golden Continent and the like must not be made up randomly, and he didn't even know that coal burning would produce poisonous gases, which is really hard to believe his words."

Liu Jian frowned slightly, glanced at Xie Qian and Li Dongyang, and saw suspicion in each other's eyes.

"This son, this coal is indeed very cheap, and a load of coal only costs a few dozen yuan, but does Childe know why everyone uses charcoal instead of coal?"

The shopkeeper on the side really couldn't help it, the boy in front of him really met the standards of a scholar, he only read the books of sages and sages, and he didn't even know about the poisonous gas produced by coal.

"Of course I know that burning coal will produce poisonous gas, which is easy to kill, and coal should not be ignited, which is extremely inconvenient to use, compared to charcoal, it is much more convenient and will not produce poisonous gas."

Liu Jin looked at everyone, smiled and said confidently.

"Childe is right, since Childe knows that this coal will kill people if it is used, why do you want everyone to use coal, isn't it clear that everyone will be sent to death?"

The shopkeeper was slightly stunned, he didn't expect Liu Jin to know so clearly.

"Although coal will produce toxic gas when burning, this poisonous gas is easy to kill, not easy to ignite, inconvenient to use, but this coal it burns for a long time, high heat, whether it is used for heating or cooking, boiling water, etc.

"We have an old saying called seeking advantages and avoiding disadvantages, and there is also an old saying that taking its essence and removing its dross, the advantages of this coal are numerous, as long as we can solve the toxic gas produced when coal is burned, we can naturally use it with confidence."

Liu Jin replied with a smile.

"But how can this coal be burned to produce poisonous gas?"

When Xie Qian heard this, he hurriedly asked, and everyone else also stared at Liu Jin one by one, if Liu Jin could really solve the problem of toxic gas produced when coal was burned, it would be very beneficial to the country and the people.

"To solve the problem of toxic gas produced when coal is burned, we must first understand why this coal produces toxic gas when it is burned, and why this charcoal does not produce toxic gas."

Liu Jin looked at Xie Qian, then came to the place where the charcoal was stacked on the side, picked up a piece of charcoal and said: "This coal and charcoal are both black, and they can both be burned for heating, which shows that in essence, they are all the same, and they are both composed of something that can be burned for heating." ”

"However, the burning of this charcoal does not produce toxic gases, and the burning of this coal produces toxic gases, which shows that there must be something else in the coal, and it is this kind of thing that produces poisonous gas when burning, and once people inhale this poisonous gas, they are easy to be poisoned and die."

Liu Jin analyzed slowly, and the others nodded slightly when they heard Liu Jin's words, thinking about it carefully, it seemed that what Liu Jin said was very reasonable.

"You're saying that we just need to get rid of the toxic stuff in the coal and be able to use it with confidence."

Li Dongyang's eyes rolled, and he thought about it and said.

"That's right, we only need to remove the toxic things in the coal, and we can use the coal for heating and fire without worrying about poisoning."

Liu Jin nodded solemnly and said: "The toxic substance contained in this coal is sulfur, and sulfur dioxide will be produced after sulfur is burned, and this sulfur dioxide is a toxic gas, and excessive inhalation can easily cause poisoning and death." ”

"I know the sulfur, but I don't understand the sulfur dioxide."

Hearing Liu Jin's words, Liu Jian hurriedly asked.

"This sulphur dioxide can be understood in this way, it is a new thing formed after the combustion of sulphur, just as this charcoal will form ash after burning, and after this coal is burned, it will also turn into ash, and it will also produce the toxic gas sulphur dioxide."

Liu Jin touched his head, people in this era don't even have the most basic understanding of the natural science community, so there is no way to tell them about sulfur dioxide and other things, and after thinking about it, they can only simply let them know this meaning.

"I see~"

Sure enough, as soon as Liu Jin explained this, the others nodded their heads one by one to show their understanding.

"So how do you get rid of the sulfur in the coal?"

Emperor Hongzhi was already a little excited at this time, and it seemed that Liu Jin could really solve the problem of sulfur in coal, so that everyone could use coal.

If it can really be done, let coal replace charcoal, this coal of tens of cents per load will be much cheaper than hundreds of cents per load of coal, and ordinary people can afford to use it, so that the number of people who are frozen to death will be greatly reduced.

"This is a bit complicated, simply put, it is to use the washing method to wash off the sulfur in the coal, and then mix the coal and yellow mud in a certain proportion to make honeycomb coal, so that it can be used with confidence."

Liu Jin touched his head embarrassedly, this is a problem involving chemistry again, the coal used in later generations basically has to go through the process of coal washing, and some chemical reaction methods are used to remove the sulfur in the coal.

Then it is made into honeycomb coal, and the coal stove is used to burn honeycomb coal, which is convenient and affordable, and has been the main choice for household fire for a long time.

However, in the 21st century, we pay attention to environmental protection, and slowly advocate the use of gas and electricity, so there are fewer and fewer people using honeycomb coal, especially in cities, honeycomb coal has basically been eliminated, and only some small cities and rural areas are still in use.

"Wash?"

"Coal washing?"

"Honeycomb coal?"

When everyone heard this, they all felt a little dumbfounded, this kind of thing has never been heard of, this coal is used to burn, I wish it was dry, so that it is more convenient to use and burn.

Now it is necessary to take it to be washed, and it is said that the yellow mud will be put into it to make some honeycomb coal, which is really unbelievable and unheard of.

"Childe, if you want to buy charcoal, our store is welcome, but if Childe wants to smash the signboard of our store, although the store is small, it is not bullied."

When the shopkeeper heard this, he also said directly and unceremoniously to Liu Jin, he could see that the person in front of him was here to find fault.