This experiment is not only of great practical significance, but also an excellent educational opportunity. Therefore, in addition to participants Aegas, Sylvey, Chames and Kemostrier, Roland also called other members of the Witch Alliance, Carter, Iron Axe and Barov. In order to accommodate these twenty people, the experiment site was selected in the Fifth Laboratory with the largest space.
For the first attempt, the fractionation container was not made too large, about one person tall, with a diameter of one meter, similar to a tower shape.
The inner part of the container is three layers, the bottom layer has air intake, and the upper two layers are used for exhaust.
Before the separation began, Roland gave everyone a simple chemistry class, telling them what might happen, and asking a few small questions to ask everyone to find the answers by themselves, in addition to arousing the interest of the listener, it can also greatly enhance the teaching effect. This is also a common skill for chemistry teachers.
...Theoretically, when Agsha lowers the internal temperature of the container, the air will gradually condense into liquid, dripping to the bottom layer through the perforated partition.So when you observe fluid accumulation at the bottom, tell us.
Since it is impossible to see directly, Sylvie must observe through the container and describe the changes, so Roland explained it in particular in this part.
Sylvie nodded suspiciously. Can you really see liquid appear?It's not the water vapor in the jar, is it?
Don't worry, the liquid air is light blue, completely different from water vapor.Roland waved his hand, and at that temperature, the water vapor had long solidified into ice crystals.Then he made a gesture to Aegasa, let's start.
Wait... Don't you need to block the hole at the bottom of the container?she asked.
It will be blocked later, otherwise there will be too little air in the jar and no obvious changes will be observed.Since it was just a test, Roland chose the easiest method to inhale air. When the temperature in the tank drops rapidly, the pressure will decrease accordingly, causing the air outside to pour into the tank.
This is not worth the cost when doing this in regular production, because the air conditioning will continue to lose and waste energy, but Aegas uses magic and the cooling efficiency is far more than any refrigerator, so Roland is too lazy to prepare the air pump to inflate it.
Aegas took a deep breath and pressed his hands on the fractionation tower.
Within a few breaths, a whistle sound appeared in the intake pipe, which was the sound of the rapid influx of airflow.
Layers of white frost appear around the mouth of the tube at a speed visible to the naked eye, and the moisture in the air is constantly expanding and condenses rapidly at the overflowing low temperature and attaches to the outer wall of the container.
Anna cremated the black into silk threads and cleared the thickening ice crystals.
After a while, Sylvie said in surprise, I saw liquid appearing on the partition, but more of a white frost.
The white frost may be influx of water vapor or crystallized carbon dioxide, Roland explained that most of it should be water vapor, considering that the carbon dioxide content in the air is extremely low.
If during formal production, before the air is drawn into the fractionation tower, it must be dried first, otherwise these water vapors will easily clog the layered plate and exhaust holes after condensed, resulting in a reduction in production efficiency.
About half a quarter of an hour later, the bottom of the container had been filled with blue liquid, and Roland asked Soloya to block the air intake and seal it with a coating.
Next is the key heating up.
Depending on the different boiling points of nitrogen and oxygen, nitrogen will first reach the boiling point, turn into gas and escape upward, thereby achieving separation.
He neither remembered the specific value of this temperature, nor did he have any means to measure it at present, so he could only rely on Agesha himself to grasp it.
The specific manifestation is that gas is discharged from the exhaust hole at the top of the fractionation tower, while the remaining liquid at the bottom will become bluer, which means that the purity of liquid oxygen is constantly increasing.
Fortunately, Agesha is not unfamiliar with the control of magic. She accurately adjusted the cooling amplitude to slowly rise. After a while, Sylvi also observed the boiling phenomenon of the liquid level.
Bubbles began to emerge from the coated tubes that were penetrated into the water, and Kaimo quickly collected several bottles of gas using the drainage gas collection method.
Is this nitrogen?Lily curled her lips and said, "You can't see anything at all."
This is the first question I asked before, Roland asked, how do you prove that it is different from air?
Ignite, Tilly took the lead in answering that "Elementary Chemistry" says that combustion requires oxygen. If it is another gas, it should make the burning blocks extinguish instantly.
You will know by cooling it back into liquid. Aegas thought for a moment and said, "Didn't you say that nitrogen is colorless after liquefaction?"
Or by diverting the remaining liquid in the container, proving that the latter is pure oxygen can also prove the diversity of air components.Anna spoke.
The scene completely became a stage for academic masters to perform. Test methods were proposed one by one, and then discussed with each other. There were only a few voices left in the laboratory.
Roland looked around and found Nightingale, Andrea, Maisie and other witches, as well as the city hall chief supervisor and chief knight Carter, all of whom were confused.
The First Army commander Iron Axe maintained an expression at any time, and he would nod and say yes no matter what he said.
Well, Roland sighed in his heart. It seemed that this chemistry class was a little beyond the scope.
If anyone could feel the Prince's delight, there would probably be only Kemostra and Chameth.
Your Highness, this is really...magical, the young alchemist exclaimed, you proved the correctness of Elementary Chemistry.I'm afraid all alchemists wouldn't have expected that even the air everywhere around them was so complicated.
With pure oxygen, can a more severe oxidation reaction be observed?I have many more experiments to try, Kaimo said excitedly.
Roland nodded, but another thought suddenly popped up in his mind.
Nitrogen is the most important raw material for artificial synthesis of ammonia. Reacting with hydrogen under high temperature and high pressure and adding a catalyst can obtain ammonia. The latter can not only be used to make nitrogen fertilizers, but also to synthesize nitrogen oxides to produce nitric acid.
But to achieve this process, there is still a lot of work that needs to be done, such as air pumps, vacuum gas storage tanks and a series of complex reaction equipment.
Even if white paper can provide the function of a catalyst, it still requires repeated trials.
Now, since he has pure oxygen and pure nitrogen, why don’t he produce nitric oxide directly?
Indeed, the chemical industry chooses to use ammonia to make nitric acid because the oxygen and nitrogen reactions are energy absorption reactions and cannot be carried out spontaneously. They require external energy supply. For example, discharge is achieved by instantly heating the gas to thousands of degrees through an arc. This is also the reason why the soil in places where thunders often is more fertile.
Because of this, this method has high equipment requirements and high energy consumption, so it is not suitable for formal production.
However, if production capacity is urgently needed, this production method is the most efficient, without even a catalyst, just continuous discharge... or other means to reach the high temperature generated by the arc.
Roland naturally thought of the black fire.
The heating efficiency of black fire is not worse than that of arc, and the burden on Anna is also very low. As long as the nitrogen and oxygen are purified, mixed and poured into a closed reactor in proportion, nitric oxide can be continuously generated.
He decided to give it a try.
For the first attempt, the fractionation container was not made too large, about one person tall, with a diameter of one meter, similar to a tower shape.
The inner part of the container is three layers, the bottom layer has air intake, and the upper two layers are used for exhaust.
Before the separation began, Roland gave everyone a simple chemistry class, telling them what might happen, and asking a few small questions to ask everyone to find the answers by themselves, in addition to arousing the interest of the listener, it can also greatly enhance the teaching effect. This is also a common skill for chemistry teachers.
...Theoretically, when Agsha lowers the internal temperature of the container, the air will gradually condense into liquid, dripping to the bottom layer through the perforated partition.So when you observe fluid accumulation at the bottom, tell us.
Since it is impossible to see directly, Sylvie must observe through the container and describe the changes, so Roland explained it in particular in this part.
Sylvie nodded suspiciously. Can you really see liquid appear?It's not the water vapor in the jar, is it?
Don't worry, the liquid air is light blue, completely different from water vapor.Roland waved his hand, and at that temperature, the water vapor had long solidified into ice crystals.Then he made a gesture to Aegasa, let's start.
Wait... Don't you need to block the hole at the bottom of the container?she asked.
It will be blocked later, otherwise there will be too little air in the jar and no obvious changes will be observed.Since it was just a test, Roland chose the easiest method to inhale air. When the temperature in the tank drops rapidly, the pressure will decrease accordingly, causing the air outside to pour into the tank.
This is not worth the cost when doing this in regular production, because the air conditioning will continue to lose and waste energy, but Aegas uses magic and the cooling efficiency is far more than any refrigerator, so Roland is too lazy to prepare the air pump to inflate it.
Aegas took a deep breath and pressed his hands on the fractionation tower.
Within a few breaths, a whistle sound appeared in the intake pipe, which was the sound of the rapid influx of airflow.
Layers of white frost appear around the mouth of the tube at a speed visible to the naked eye, and the moisture in the air is constantly expanding and condenses rapidly at the overflowing low temperature and attaches to the outer wall of the container.
Anna cremated the black into silk threads and cleared the thickening ice crystals.
After a while, Sylvie said in surprise, I saw liquid appearing on the partition, but more of a white frost.
The white frost may be influx of water vapor or crystallized carbon dioxide, Roland explained that most of it should be water vapor, considering that the carbon dioxide content in the air is extremely low.
If during formal production, before the air is drawn into the fractionation tower, it must be dried first, otherwise these water vapors will easily clog the layered plate and exhaust holes after condensed, resulting in a reduction in production efficiency.
About half a quarter of an hour later, the bottom of the container had been filled with blue liquid, and Roland asked Soloya to block the air intake and seal it with a coating.
Next is the key heating up.
Depending on the different boiling points of nitrogen and oxygen, nitrogen will first reach the boiling point, turn into gas and escape upward, thereby achieving separation.
He neither remembered the specific value of this temperature, nor did he have any means to measure it at present, so he could only rely on Agesha himself to grasp it.
The specific manifestation is that gas is discharged from the exhaust hole at the top of the fractionation tower, while the remaining liquid at the bottom will become bluer, which means that the purity of liquid oxygen is constantly increasing.
Fortunately, Agesha is not unfamiliar with the control of magic. She accurately adjusted the cooling amplitude to slowly rise. After a while, Sylvi also observed the boiling phenomenon of the liquid level.
Bubbles began to emerge from the coated tubes that were penetrated into the water, and Kaimo quickly collected several bottles of gas using the drainage gas collection method.
Is this nitrogen?Lily curled her lips and said, "You can't see anything at all."
This is the first question I asked before, Roland asked, how do you prove that it is different from air?
Ignite, Tilly took the lead in answering that "Elementary Chemistry" says that combustion requires oxygen. If it is another gas, it should make the burning blocks extinguish instantly.
You will know by cooling it back into liquid. Aegas thought for a moment and said, "Didn't you say that nitrogen is colorless after liquefaction?"
Or by diverting the remaining liquid in the container, proving that the latter is pure oxygen can also prove the diversity of air components.Anna spoke.
The scene completely became a stage for academic masters to perform. Test methods were proposed one by one, and then discussed with each other. There were only a few voices left in the laboratory.
Roland looked around and found Nightingale, Andrea, Maisie and other witches, as well as the city hall chief supervisor and chief knight Carter, all of whom were confused.
The First Army commander Iron Axe maintained an expression at any time, and he would nod and say yes no matter what he said.
Well, Roland sighed in his heart. It seemed that this chemistry class was a little beyond the scope.
If anyone could feel the Prince's delight, there would probably be only Kemostra and Chameth.
Your Highness, this is really...magical, the young alchemist exclaimed, you proved the correctness of Elementary Chemistry.I'm afraid all alchemists wouldn't have expected that even the air everywhere around them was so complicated.
With pure oxygen, can a more severe oxidation reaction be observed?I have many more experiments to try, Kaimo said excitedly.
Roland nodded, but another thought suddenly popped up in his mind.
Nitrogen is the most important raw material for artificial synthesis of ammonia. Reacting with hydrogen under high temperature and high pressure and adding a catalyst can obtain ammonia. The latter can not only be used to make nitrogen fertilizers, but also to synthesize nitrogen oxides to produce nitric acid.
But to achieve this process, there is still a lot of work that needs to be done, such as air pumps, vacuum gas storage tanks and a series of complex reaction equipment.
Even if white paper can provide the function of a catalyst, it still requires repeated trials.
Now, since he has pure oxygen and pure nitrogen, why don’t he produce nitric oxide directly?
Indeed, the chemical industry chooses to use ammonia to make nitric acid because the oxygen and nitrogen reactions are energy absorption reactions and cannot be carried out spontaneously. They require external energy supply. For example, discharge is achieved by instantly heating the gas to thousands of degrees through an arc. This is also the reason why the soil in places where thunders often is more fertile.
Because of this, this method has high equipment requirements and high energy consumption, so it is not suitable for formal production.
However, if production capacity is urgently needed, this production method is the most efficient, without even a catalyst, just continuous discharge... or other means to reach the high temperature generated by the arc.
Roland naturally thought of the black fire.
The heating efficiency of black fire is not worse than that of arc, and the burden on Anna is also very low. As long as the nitrogen and oxygen are purified, mixed and poured into a closed reactor in proportion, nitric oxide can be continuously generated.
He decided to give it a try.
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