Afterwards, Feng Jing quickly stuffed the whole truck of sugarcane transported back from Su Hua into the large wooden box.

...No, he still left three sugarcane for Su Huan to chew and eat.

The sugarcane juice obtained must be filtered. In this step, because Su Huan wants to provide work to the villagers, there is no mechanized equipment.

Therefore, the residue must be filtered in the original method.

Put a particularly large bamboo basket on a large jar. A white cloth was laid on the basket, and pour the sugarcane water in the bucket into the bucket in one bucket.

The sugarcane juice will be drained through a basket, and the residue will be left on the white cloth.

But there is sugarcane juice in the residue, so it needs to be made like making soy milk. The two of them work together to gather several corners of the white cloth, wrap them around a stick, twist them in one direction, and press them tightly, and most of the sugarcane juice in the residue in the white cloth can be pressed out.

After removing the remaining residue in this step, you have to add a "detergent" mainly based on lime and carbon dioxide.

A list of the ingredients of sugar cane juice and "detergent" is also written in the book.

But this was Su Hua's first operation after all, and he did not dare to experiment with the entire tank of sugarcane water produced in one go.

The two of them first scooped out half a bucket.

The barrel was weighed before, and then weighed it with sugarcane water. Remove the barrel, which is the pure weight of sugarcane juice.

Lime is ready-made.

But carbon dioxide... also needs to be collected by controlling the amount, which is really troublesome, especially the other gases produced by the combustion of charcoal have to be removed. This still requires Su Huan's superpower to participate in it.

According to the ratio, add the amount of detergent to the sugarcane juice water, because carbon dioxide is soluble in water, and the sugarcane juice is not pure sugar, but there is still water.

At room temperature and pressure, about one volume of water dissolves one volume of carbon dioxide. Under high pressure, carbon dioxide can dissolve more. Just like in the case of making Coke, the box made by Su Huan is blessed with her superpowers, which can do.

Those workers just need to operate the pressurized box as she asks.

Later, she announced the secret recipe, and others could also use carbonization to make white sugar. Su Huan used superpowers everywhere, just to increase production. Others had no superpowers and could only obtain detergent in a more complicated way.

Their output will be lower than her, but they still make money by using cheap sugar cane to make white sugar, but they are not as profitable as Ye Siyin and the others now.

This is done to get the mixed juice.

Heat the mixed juice for the first time and pre-ash it. The temperature should not be too high at the beginning, and it is better to be around 45°.

After that, excessive lime milk and carbon dioxide must be added continuously, and the temperature will be increased to about 65°. This is a carbonated filling.

Su Huan also doesn't understand what carbonated acid is.

Anyway, what the book says is that she can know what calcium carbonate, carbon dioxide, and how to write chemical formulas. She really doesn't know more complex chemical terms and more complex chemical substances, and maybe she hasn't heard of them.

She had completely regarded chemistry as a book of heaven at that time, but fortunately she was a student of art and physical education, so she didn't understand this thing, and it was okay if she didn't understand it.

Su Huan brought back his long-standing memories of taking chemistry class and continued to watch the heating process. He asked Feng Jing to burn charcoal to make carbon dioxide and other things, put them into the wooden barrel in front, and then injected into the heating pot here.

This process is to produce calcium salt precipitation.

After the first heating is over, filter it and you will get a carbon juice.

After that, repeat this process, perform the second full carbonic acid filling and continue heating. The temperature of this process is higher than the first heating, and it is more appropriate to keep it at around 75°.

After that, filter it to obtain a dicarbonated juice.

After these two processes, the impurities in the syrup will become less and less.

Finally, it is sulfur smoked. The sulfur smoked mainly adds sulfur dioxide, and the purpose is to make the purity of the white sugar.

Heat and evaporate to obtain syrup.

Of course, this step is still relatively early. In order to obtain high-quality white sugar, the procedures are really cumbersome and the cost is very high. Even in the industrialized world, these cumbersome procedures cannot reduce the cost.

The syrup that has been alive is rinsed with sulfur, and the temperature must be heated at this time, and the temperature must be kept at 60°~68°.

The sulfur bleaching is performed to reduce the pH value, from ph7.0~7.2 caused by the previous sulfur smoke to ph5.8~6.4    .

This process has made Su Hua feel super troublesome. When producing syrup in the future, she will definitely not be able to leave the factory and have to stay here, otherwise there would be no ph test paper in ancient times. At the beginning, the workers had no experience and didn't know how to control the amount, so they could only rely on her superpowers to regulate it first.

We can only wait until everyone has experience to make this step based on their experience.

At this time, the sugarcane juice has to be continued to heat up to evaporate the moisture inside.

In fact, when using Su Huan's superpowers in this step, don't use Su Huan's superpowers too quickly, and you can drain the water inside in an instant.

But... if you really need to use superpowers, there is no need for so many complicated programs before...

After all, this is to benefit the people and provide jobs, so this step of evaporation still requires everyone to operate it themselves.

The first time the clean syrup is heated and evaporated, it will produce a lot of foam, which also requires manual removal of foam.

This step is not to evaporate all the water at once, but to concentrate the sugarcane juice from the sugarcane juice with a water content of about 86% to syrup with a water content of 60%.

After that, secondary sulfur smoke and desaturation filtration have to be performed. This time it is really for bleaching. The syrup obtained after this time only contains about 45% of the moisture.

After that, continue to cook sugar and you can obtain sucrose crystals.

But this crystal is not the last white sugar.

At this moment, the mixture of sucrose crystals containing mother liquor is sugar paste.

The book said it was to be put in the crystal aid machine, but the composition of this thing was not seen in the book. Su Huan, the previous juicer, could roughly understand the centrifuge, which she had also said in class before, and knew what it meant.

This crystal aid machine is only said to be to help crystallize, but she doesn't know how to help crystallize, probably just to let the syrup cool down quickly.

She could only put the sugar paste aside and let it cool itself down.

Feng Jing suggested that he would bring in a few buckets of cold water and put the bucket containing the sugar paste inside.

Su Huan had not dug a well here yet, so he asked Feng Jing to go home to fetch water.

After that, with the help of cool water, the crystallization speed was indeed much faster.

The last step is to pour these crystal-assisted sugar paste into the centrifuge, and use the centrifugal force generated by the rapid rotation of the centrifuge to throw out the molasses.

There is a screen in this centrifuge, and the sucrose crystals will be blocked by the screen and left in the screen basket.
Chapter completed!