If there is a cooling tower, a large amount of water can be exchanged, and the temperature can be taken away, and there is no exchange between the water and the hot material, so that the output will not be affected. Pen & Fun & Pavilion www.biquge.info

However, the technical conditions required for the cooling tower are not high, the requirements for steel and pipelines are very high, and the recycling also needs a unique design, not to mention the current Miaojiazhuang, even in the future, after the large-scale chemical industry, it also needs a long time of research and adjustment to be finally completed.

For the current situation, Zhao Xin has no choice but to cool it naturally, from about 1000 degrees to normal temperature, it takes time, especially under the premise that the iron box cannot be opened and the air will not be convection, it is really difficult to reduce the temperature inside.

An hour later, the scene was still hot, Zhao Xin lacked time, but not a day or two, even a month was no problem, he further improved the plan, for example, let Miao Yuan make preparations, and inspect the layout of Baozhou City, for example, where there are more military camps, more military relatives, where will form a spontaneous market.

These are all things that Miao Yuan has never considered, Miao Yuan is the owner of Miaojiazhuang, he is more in Miaojiazhuang, he has occasionally entered Baozhou a few times, and he also goes to do business, at most he knows about the government and the military camp, and he really hasn't paid attention to it.

Fortunately, this is not an important place, so I sent a few people to the county seat, just ask casually, and soon, in the afternoon, the information about Baozhou was sent to Zhao Xin.

Very simply, there are about 8,000 soldiers in Baozhou, including about 5,000 regular troops, of which the Yunyi Army is about 2,500 people, and there is one called the Baozhou Army, which is about 2,500 people, and there are nearly 3,000 Xiang Army.

Whether it is the regular army, or the Xiang army, are strong men, the forbidden army because of the rotation relationship, the family is not much, Baozhou and the Xiang army, basically the family members are here, more than 5,000 people almost represent more than 5,000 families, the family is almost forty or fifty thousand people, which is almost the vast majority of the population of Baozhou.

These military dependents are the vast majority of the population of Baozhou, and the rest plus ordinary residents, the total population of Baozhou is almost 100,000, and the military families are basically close to the military camp.

Zhao Xin only inferred before, but now, seeing this basic information, it has been determined that there is a huge market in Baozhou, because where military families live, some simple markets have been spontaneously formed, and these markets are mostly vegetable markets or restaurants.

This is the foundation, with this foundation, good quality and low price, good taste steamed bread, there will be a huge market.

In the evening, Miao got up and asked where to deal with the iron box, after a whole afternoon, the temperature of the iron box dropped a little, at least the outside can approach the iron box, but the inside is still very hot.

The iron box cannot be opened, and the sealing can reduce the consumption of heat, but when it is cooled, there is no way, especially the inside, which can not be lowered in an afternoon, and it is necessary to wait for time.

Zhao Xin didn't care, as long as no one approached, it was okay if there was no danger, not sure what was in here, and even if these things were thrown in the wild, no one took them.

A few longbowmen were sent on duty, not to guard these things, but mainly to set up warning signs to prevent anyone from accidentally breaking into them, and no one could take the contents until the temperature was completely lowered.

In the era of the Northern Song Dynasty, before the production of refractory materials, especially fire-resistant gloves, put your hand into an iron box with a temperature of more than 300 degrees, which was suicide, and no one would be so stupid.

It's been almost half a day, the temperature is still slowly dropping, today's temperature is not too high, there is no wind at all, the heat is solidified in this generation, from a high temperature of about 1,000 degrees, slowly dropped to about 200 degrees, this is the temperature of the outside, at least more than double the inside, five or six hundred degrees is normal, to reduce to normal temperature, it is expected, it will be at least half a night.

Hearing Zhao Xin's instructions, Miao Yuan was very surprised, such a big effort to come out, not much attention, is it difficult, this is not the so-called elixir or the like.

It's very strange, but I still do it according to Zhao Xin's instructions, here in Miaojiazhuang, there are not many outsiders, and a few longbowmen are arranged to keep vigil, which is a matter of one sentence for Miao to get up.

There was nothing to say all night, no one would pay attention to what was in such an iron box, and even the entire Miaojiazhuang, the vast majority of people didn't know that there was such a box in the wild, let alone outsiders.

After breakfast, Zhao Xin took Miao Yuan and others, and came to the front of the iron box, Ye Lu was heavy, the iron box was placed in an open place, and it was relatively high, not affected by Ye Lu, a night of time passed, under the long time of natural cooling, the temperature was reduced to room temperature, and people could approach and even touch the box.

Ordered the blacksmith to open the box, at the moment of opening the box, a stream of hot air came out, but it was not too powerful, under the natural cooling, especially in the winter night, the heat that could still be preserved in it was very little, this wave dispersed, the air entered the convection, and in a short time, the temperature of the reactor was completely cooled.

In order to avoid loss, Zhao Xin did not dare to use the method of water cooling, and the cooling time exceeded the time of one day and one night, and finally took out the black lump of things.

Sun Ji and the others came to the front, looking at this black lump of things with some disappointment, the appearance of this thing, how to say it, it is too earthy and too low, which makes everyone feel puzzled, quicklime is white, miscanthus is similar to crystals, charcoal is black, but the calcination result is still black, it looks inconspicuous at all.

Zhao Xin was full of excitement, before he opened the box, he was still worried, whether he succeeded or not, after unpacking, when his eyes swept this black lump of things, he already knew that he had succeeded, when he swept to this part, what appeared was a mixed item, there were more than 56% soda ash, the rest was calcium sulfide, part of the no reaction raw materials, and a small number of impurities.

56% soda ash, this proportion is not low, the remaining part of calcium sulfide, is the by-product of this reaction, there is no reaction of raw materials, only a very rare part, which is equivalent to eighty or ninety percent of the raw materials to complete the reaction.

Most of the by-products of the use of the Lubulan method to make soda ash are not easy to water, or slightly soluble in water, and the raw materials are even more soluble, except for limestone, everything else is insoluble in water.

The amount of limestone was small at that time, coupled with Zhao Xin's deliberate control, the rest was very small, basically negligible, and the rest was more miscanthus and carbon, both of which were insoluble in water, and the mixture could be purified by hydrolysis.

These impurities can be cleaned out, because calcium sulfide is slightly soluble in water, while soda ash is easily soluble in water, and it is the best way to dissolve it with water and filter it.

After calcium carbonate is dissolved in water, it is weakly alkaline, and the destructive power is not strong, Zhao Xin has already taken out the grassroots gauze for dialysis, which is the simplest and most helpless method, with the help of different dissolutions, the analysis of different compounds, itself is the most commonly used in chemical industry, among them, water is a general solution, as well as alcohol, dilute sulfuric acid, and other solutions, which can be used as an extraction solution.

Tsutori, the method of filtration, got some light yellow powder, this part, most of it is calcium sulfide, can be used as a pesticide, and it is also very versatile, Zhao Xin has no other benefits except for lighting him up and adding a lighting value to the card system, because he is one of the chemical raw materials and cannot be used directly.

Watching Zhao Xin's trick-like operation, even if Sun Ji couldn't understand it, they were a little unconscious by the side, watching the results of Zhao Xinxin's one-day production.

After dissolving, the solution obtained is soda ash solution, that is, foaming agent, which can be directly steamed steamed bread, and what is added to the steamed bread is not soda ash powder, but these waters.

Zhao Xin first scanned this to the card system, the impurities of the foaming agent are very few, and the hint in the card system is very small a very small part of calcium sulfide, which is very small.

This part of calcium sulfide is not edible, if it continues, it can be precipitated by several filtration and different temperatures, fortunately, the proportion of less than 0.1% is almost negligible.

In the huge wooden barrel, there is a soda ash solution with a certain concentration, and if it is just steamed steamed bread, it can already be used, but Zhao Xin is not just steaming steamed bread, he left about two bowls of it, and the two bowls left behind were taken to the small kitchen by him, and he needed to use a slight heating method to analyze the soda ash.