October 26, the seventh day of the ninth lunar month, is already the frost solar term, although the south of the Yangtze River has not yet reached the frost day, but the morning is already quite cold.

Gao Yi wrapped his coat tightly and came out of the low shack, even if there was only a thin brick wall separating it, the temperature difference between the inside and outside was at least ten degrees, and a cold air went straight into the viscera, and he couldn't help but fight, and the bones of his body were clucking and colliding violently. He has been pampered for half a year, and he is no longer suitable for this difficult environment.

In the early hours of the morning, it was the darkest hour, and Gao Yishen walked along the newly paved gray path towards a lighted shed in front of him. The shed emitted the smell of porridge, rice and bread, which made him feel a burst of warmth when he was hungry.

"Mr. Gao!"

"Mr. Gao......"

There were already a lot of people gathered around the shed, holding all kinds of breakfast in their hands, sitting on bamboo chairs and benches eating fragrantly, and when they saw Gao Yi coming, they stood up and said hello. Gao Yi nodded all the way into the shed, but there were few people in the shed, and it seemed empty. The Lee brothers sat at a table in the middle, and it seemed that the two had scared the diners outside.

"So early? You can't sleep all night, right? ”

"After squinting for a while, when I get older, I can't sleep well when I have something in my heart, so it's better to get up and watch the workers work, and my heart is more steady."

Breakfast is in the form of a buffet, both Chinese and Western, respectively placed on two long tables, Western food is milk coffee, all kinds of bread, butter, fried eggs, bacon, red sausages and the like, Chinese style has soybean milk, bean curd, porridge, flatbread fritters, white steamed buns, all kinds of buns, the variety is very rich. This is the restaurant of the manager and the foreman, so there will be such a sumptuous food, of course, the treatment of the workers can not be so good, breakfast is nothing more than white porridge steamed buns and a few pieces of pickles.

Gao Yi took a cup of strong coffee, a bowl of bean curd, a cage of Nanxiang xiaolong, a bacon omelette, and asked the master to cut a slice of butter the size of a palm and a thick sole and put it into a white steamed bun.

Gao Yi first drank a bowl of bean curd with a sigh to warm his stomach, and then slowly ate xiaolongbao with strong coffee.

"Last night, we all got up to watch," Gao Yi's previous appearance of eating was stormy, and the two Li brothers looked stupid, and when he finally recovered and returned to a normal state and drank coffee, Li Yongfa said: "Two shifts have a total of 100 quintals of raw materials, it should have been reached, this, uh...... Design standard for full load operation. Eighty-six quintals were shipped, and the yield was 600 catties higher than the designed eighty quintals! ”

Although the new term is still a bit awkward, the two Li brothers have been able to use it accurately.

"Oh, is it? Looks like it's going well! Gao Yi opened his pocket watch and took a look, just after half past three. When we are ready, let's take a look at the output of Yinshi's class. If the yield is stable all day today, I don't think there is any need to stay up for another night, I can announce the success of the trial run in advance, and I can transfer to normal production tomorrow. ”

Since the entire extraction time takes four hours, the production process at the factory is developed in four-hour shifts, with a total of six shifts a day, with the first shift at 8 a.m. and the last shift at 4 a.m. Now there is still half an hour before four o'clock, and there is plenty of time, Gao Yi unhurriedly eliminated the food in front of him. When everything was settled, and only a quarter of an hour had passed, Gao Yi greeted Er Li, and the three of them walked out of the cafeteria towards the extraction workshop.

As the name suggests, the extraction workshop is the place where the active ingredients are extracted. The extraction process is the most important part of the whole production process, and the yield of semi-finished products obtained in this process directly determines the yield of the final product.

However, contrary to its importance, the extraction workshop is just a timber-framed tin roofed shack, surrounded by a thin brick wall with no ceiling, which seems to occupy a larger area, and is not even as simple as the canteen where you just ate.

There are two production lines in the workshop, each of which can process 25 loads of raw materials every four hours. "Dan" is a commonly used unit of weight in this era, "Dan" and "stone" are connected, a Dan is an adult man can bend down to bear the weight, roughly 100 catties, at this time a catty is almost 600 grams, so a Dan should be 60 kg. However, in order to facilitate the calculation, the "dan" used by Gao Yi is converted according to the metric system, one catty is defined as 500 grams, and 25 quintals is 2500 catties or 1.25 tons. According to the designed yield of 8 percent, 25 quintals of raw materials can extract 100 kilograms, that is, 2 quintals of active ingredients, these active ingredients as semi-finished products, after further processing, and then doped in a ratio of 1 to 10, can finally produce 20 quintals of finished products.

Since the ammonia is shared by the two production lines, and the soaking time of the ammonia in the process is one and a half hours, plus the half hour required to recover the ammonia, the two production lines are actually started two hours apart.

When Gao Yi and Er Li came to the extraction workshop, they were just in time for the last elution and drying link of one of the production lines, and the crude products produced in this batch were as high as three quintals. This means that even after the subsequent purification process, the semi-finished product will exceed two and a half quintals, while the final product can reach twenty-five quintals according to the ratio of one to ten. That is to say, the input of raw materials is 25 quintals, the output is also 25 quintals, the input-output ratio is one to one, and the yield is eighty percent higher than that of the design, which is a full quarter.

The reason why the yield has been so much improved is that in the past two months, Gao Yi has successively done several experiments to improve the activated carbon adsorbent. In this improvement, he tried oil palm husks, coconut shells, cottonseed husks, peanut shells, walnut shells, and chaff, and finally chose the coconut shell with the strongest adsorption power as the raw material for firing activated carbon.

In addition to improving raw materials, Gaoyi has also innovated in the manufacturing process of activated carbon.

The adsorption capacity of activated carbon is determined by the surface area of the carbon, and the larger the surface area, the stronger the adsorption capacity. The surface area is divided into an outer surface and an inner surface, the material of activated carbon determines its outer surface, and the inner surface can be expanded with an oxidant. As a kind of double salt, alum is a very good oxidant at high temperature, while removing the colloidal organic matter that hinders adsorption on the surface of activated carbon, potassium ions have a strong perforation effect, which can penetrate into the carbon body and then crack it.

Gao Yi put the alum and coconut shell crumbs in a ratio of one to five, put them in a jar and burn them at a temperature of 800 degrees. A small hole is reserved on the lid of the tank mouth when burning, at first there will be a large amount of water vapor gushing out, about three or four hours there is a combustible gas generated, producing a yellow-red flame, and after the combustible gas is burned, the tank is all sealed, and continue to burn for four to five hours. In the adsorption process, almost all the active ingredients can be adsorbed out, instead of emptying with the waste liquid, so the yield is greatly improved.