my scientific age

Chapter 205 History freezes!

The trial production link is the most critical link in the entire Yu's Seven Pagoda project. Through the trial production link, the production efficiency data, quality data, performance parameters, and the most critical actual output data of the product are obtained. Whether the operation of the seven-tower unit is stable and reliable, there are loopholes in some manufacturing links.

If the actual output of Yu's Seven Pagodas cannot meet the design standards, and there are mistakes in the operation of the trial production, it will mean rework and delay the manufacturing period.

However, the only thing to be happy about is that, for the environment of the era in 1937, issues such as high energy consumption, high pollution, and environmental protection do not need to be considered. is not there.

The core performance indicator of the trial production of the Yu's Seven Pagoda prototype device is the actual output.

The designed output is 24 tons in 22 hours, the output per hour is 0.916 tons, and the actual output reaches more than 95%, which can pass the production standards formulated by Yu Hua.

In the experimental site, Lin Wan, the deputy team leader, is leading Fang Yu, Zhou Yuan and other team members, as well as the welder team to conduct a final safety inspection to check whether there are gaps in the welding seam of the connecting pipeline, the degree of firmness, and the wiring and centrifugal pump. and many more.

This is the last safety check before trial production and must be taken very seriously.

Under the scorching sun, Lin Wan and the others climbed up and down, and carefully checked the pipelines between the core containers of the Seven Pagodas of Yu Family. After checking the last core container, Lin Wan, who was completely soaked in sweat, stood up On the metal scaffold, he raised his right hand like a braised pig's trotter and gave Yu Hua a thumbs up.

This is what it means to pass the inspection.

After half a month, Lin Wan's skin darkened at a speed visible to the naked eye, and her shoulders even peeled off from the sun.

Immediately afterwards, Fang Yu and Zhou Yuan, members of the group, all gave thumbs up, indicating that the inspection was passed.

At this moment, Xiong Shenggang and the nine welders who saw the actions of the three people finally breathed a sigh of relief and relaxed slightly.

For them, the safety inspection before the trial production was nothing more than a 'graduation exam'. Fortunately, everyone passed the graduation exam.

However, now is not the time to celebrate.

As the core members of the design team passed the inspection, the workers around the experimental site, including Liu Wei and the elegant man, all understood that the most critical moment had come.

"Every group is ready to enter the trial production stage." Yu Hua stared at the prototype device of Yu's Seven Pagodas that had undergone the last safety inspection in the experimental site, took a deep breath, and gave instructions as the team leader.

The big guy in front of him is the second work that condenses his countless efforts.

Whether it can be successful, it is today!
Putting one's head into casting a sword for a month, now try to be sharp.

If this 'sword' is sharp, it can cut out the future of the China Chemical Industry Building, and add a sky-filling stone to the vacant section of China's industry.

Ordered by the top leader of the project, several production teams that have been trained to a qualified level quickly entered the experimental site and went to their respective positions. Although these warrior-identified production team members have no education or literacy, they are successful. Flexible in mind and strong execution ability, can complete the 'part' responsibilities well.

As long as each 'part' can function normally and play its own role, then the Seven Pagodas of the Yu Family can operate normally.

Soon, all production teams all entered the post.

"Number one is ready!"

"Second seat is ready!"

"Seat three is ready!"

All the news was sent back to Yu Hua through the dispatchers arranged at the experimental site. After a few minutes, all the production teams in the production positions were all ready.

At this moment, everyone is watching.

All the people present held their breaths, the elegant man was engrossed, staring at the Yu's Seven Pagoda, which was completely beyond his imagination and full of industrial beauty, his right hand was slightly clenched, and there was a trace of worry in his heart.

Liu Wei didn't say a word, exhaled slightly, his heart beat a little faster, and he concentrated all his attention on the experimental field. After so many years of revolutionary cause, he has never been so nervous and looking forward to it.

At this time, everyone was silent.

"The unit is powered on, and the boiling furnace feeds and ignites." Yu Hua methodically gave instructions to the dispatcher holding the flag.

The dispatcher immediately waved the two flags in his hand and conveyed instructions to the production teams in different areas and locations of each device. Then, the Yu’s Seven Towers unit was energized, and the fans installed at the bottom of the two boiling furnaces entered the working state and rotated at a high speed. The air is extracted into the boiling furnace, and it is ejected at high speed through the small holes located in the refractory base of the furnace bottom, and impacts the quartz sand from top to bottom.

At the same time, the closed warehouse door was opened at the feeding port, and countless solid sulphur particles with the size of rice grains and pale yellow were poured into the boiling furnace like water flow, and they continued to rise and dance under the action of high-speed airflow, doing Brownian motion. , Immediately afterwards, the furnace gun was ignited, and the sulfur particles fully combined with oxygen burned violently. Under the action of oxygen, they burned violently, emitting a beautiful blue flame.

This is a fluidized bed fluidized bed furnace design born in the 50s, with low technical content. It is composed of a furnace, a refractory base, and a fan. The reason is that quartz sand has serious wear and tear on equipment, high smoke and dust content, and high pollution.

However, the defects of smoke pollution do not need to be concerned at all.

In the fluidized bed fluidized bed furnace with a radius of 450 meters and a height of [-] meters, countless violently burning sulfur solid particles and quartz sand are constantly rolling, boiling like boiling water. The high-purity sulfur produced after sulfur combustion combines with oxygen to form a high-temperature state. Sulfur dioxide passes through metal pipes connected to cold water, and after cooling treatment, the temperature drops to about [-] degrees Celsius, rushing towards the first core container and the second core container.

With the continuous supply of high-temperature sulfur dioxide gas, the acid-forming tower and the denitrification tower have entered the working state one after another, and the large centrifugal pump is started to rotate to transport the gas under pressure.

In the experimental field, white steam slowly emerged, and the sound of the fan running and the sound of the large centrifugal pump complemented each other, playing a symphony unique to the chemical industry.

The high-temperature gas treated by the acid-generating tower and the denitrification tower passes through the metal pipeline and flows into the No. 76 acid-generating tower again. The sulfur dioxide is oxidized to generate nitrite-containing sulfur trioxide, which is slightly higher than atmospheric pressure and high temperature. Sulfur gas continues to flow to the next core container. They have to undergo destocking and oxidation treatment to eliminate nitrogen oxides and nitric acid contained in themselves, and form dilute sulfuric acid with a mass fraction of [-]%, which is then sprayed with concentrated sulfuric acid to increase the concentration. .

In the concentrated sulfuric acid shower treatment process, in addition to the need for the first original concentrated sulfuric acid, the supply of the remaining concentrated sulfuric acid comes from the internal circulation.

The premise of producing sulfuric acid is to have concentrated sulfuric acid first.

The chemical reaction formula appears simple and concise on paper, but in the actual production process, it appears extremely complicated.

As time passed, everyone became more and more nervous. Lin Wan, Fang Yu and Zhou Yuan held their breaths and didn't dare to breathe. Only Yu Hua's face was calm, his eyes were bright and natural, and there was no panic at all.

It may be that he felt Yu Hua's calmness. Although the people around him were anxious and nervous, they were still able to stabilize and did not lose an inch.

After more than ten minutes, the metal pipe at the end of the Yu's Seven Towers device connected to the steel sulfuric acid storage tank finally flows out pure and colorless oil-like finished sulfuric acid.

"Yes, there is sulfuric acid coming out!" In a blink of an eye, the two of the production team in charge of the place immediately got excited and quickly reported the situation to the dispatcher not far away.

Once the news came out, it swept everyone in the experimental site like a heavy bomb. After a short period of calm, the entire Liucun experimental site was boiling, and the workers involved in the construction were cheered and excited, and some people even flickered. Tears of hope.

For them, highly corrosive pure sulfuric acid is the real hope.

"Huh..." Lin Wan and Fang Yu, who were nervous in their hearts, breathed a sigh of relief.

"Haha, there is sulfuric acid!" Zhou Yuan shouted excitedly.

The elegant man and Liu Wei also showed expressions of joy and excitement, and their eyes were full of joy as they stared at the blue sky emitting thick and light yellow waste gas.

"Take a sample."

Yu Hua's expression was still calm, and he didn't care about the excitement of the people around him.

In a blink of an eye, the dispatcher conveyed the order. The production team at the end of the metal pipe at the end of the production unit executed the order immediately. One person immediately followed the pre-procedures to open the metal valve on the main pipe linking, and the other person wearing protective gloves held a capacity of five in his right hand. [-]ml glass beaker for sample collection.

The sample needs to be divided into three times, with an interval of more than 1 minute between each time, and the total volume is 1.5 liters. The detection method is chemical detection, and the standard lye neutralization titration experiment is carried out with a phenolphthalein indicator.

After 3 minutes, the samples were collected and delivered by a member of the production team in person, and placed on the podium where various chemical instruments were arranged.

As the team leader, Yu Hua, under the attention of the public, conducted the first sample quality inspection. The three of them stayed by the side, carefully watching Yu Hua's operation steps and techniques, while the others stared nervously at the podium. With Yu Hua for a very critical test.

The final result of the test is very important. For the workers around, this waiting process is tantamount to the moment of giving birth to a child.

"The quality score is 98%, and the quality is qualified."

Yu Hua, who completed the standard lye neutralization titration experiment, calculated according to the experimental weight and parameters given by the three bottles of samples, and finally obtained the mass fraction data of the three bottles of samples, nodded and announced the test results.

After passing the quality inspection, everyone breathed a sigh of relief and showed joy again.

This is the second good news.

"Comrade Yu, what are we going to do next?" At this moment, the elegant man came up and asked Yu Hua.

"Wait."

Yu Hua greeted Lin Wan, indicating to record the data, then turned around, showing respect, and explained carefully: "Now the mass fraction of the finished sulfuric acid has been obtained, and after 24 hours, we only need to obtain the mass fraction of the flow meter. The actual production parameters can be obtained from the sulfuric acid flow data, and the first trial production reaches more than 95%, that is, 20.9 tons per day, which is considered qualified."

Lin Wan nodded and quickly took charge of recording the quality score data.

"Is that [-] tons of sulfur enough?" The elegant man nodded when he heard it, and continued to ask with a number in his heart.

"Enough, the molecular weight of sulfur is 32. One ton of sulfur can produce three tons of sulfuric acid. In theory, thirty tons of sulfur can produce ninety tons of sulfuric acid." Yu Hua nodded and smiled. One ton of sulfur and three tons of acid are the standard.

"Ninety tons of sulfuric acid?! According to the current market price of 300 silver dollars per ton of sulfuric acid, doesn't it mean that the sulfuric acid produced by these sulfuric acid is equal to 2.7 silver dollars!" The elegant man was stunned when he heard this data, and his mind immediately reacted. Somewhat incredible.

Since sulfuric acid is one of the strategic resources and is highly regulated by the government, chemical products such as sulfuric acid on the market in Beiping are very scarce and in short supply. The price of 80% sulfuric acid products has reached about 180 silver dollars per ton, while 98% of High-concentration sulfuric acid reaches 300 silver dollars, the key is that there is no market for it.

The value of 90 tons of sulfuric acid is as high as 2.7 silver dollars.

How much does it cost?

Thirty tons of sulphur scraped together is not easy to buy, but the price is only about 50 oceans per ton, and the gap between the cost and the total value is six times.

My dear, the Yu's Seven Pagodas in front of you are not producing sulfuric acid, but producing 'money'!
As soon as the machine is turned on, money is rushing out like flowing water.

Yu Hua smiled: "Yes, theoretically, after the production and sale of [-] tons of sulfur is completed, the total value of the sulfuric acid will be able to recover all the research and development investment in the Yu's Seven Towers project."

"2.7 silver dollars... It's really unimaginable." The elegant man was shocked, turned his head to look at the Seven Pagodas of the Yu Family, and once again felt the extraordinary charm and terrifying productivity brought by science.

terror.

Really scary.

Is this the beauty of science and technology?
The total investment in technology research and development was 2.7 silver dollars, and the total value of the trial production of [-] tons of sulfuric acid was [-] silver dollars. This was an incredible reward even for him. If the news spread, it would be enough to drive the capitalists across the country crazy.

If nothing else happens, the sulfuric acid products produced by Yu's Seven Pagodas will become one of the important economic sources of the base area. According to the initial planned annual output of 2.4 tons, the annual economic benefit will be as high as 720 million silver dollars. This is not counting the outbreak of war. There is a high probability of rising prices in the future.

The price of sulfuric acid increases by 50 silver dollars per ton, and the annual economic benefit increases by 120 million silver dollars.

The importance of money cannot be overstated.

And all of this was brought by Yu Hua.

The first experiment continued. Next, Yu Hua ordered to enter the full-load production mode, and Yu's Seven Towers entered the maximum industrial production state. Sulfuric acid flows out at the end of the device and is stored in the tank.

The storage tank with a volume of 50 cubic meters can store up to 92 tons of sulfuric acid, which just meets the production demand.

The sky is getting dark and it turns into night. The prototype of Yu's Seven Pagodas has been in stable production for more than 3 hours. The current hourly flow rate is about 0.87 tons, and the designed hourly flow rate is 0.916 tons. The ratio of actual output to design indicators has reached 94.9%, which is in line with First trial production requirements.

However, it is not yet time to draw conclusions.

The actual output needs to meet the standard, and the unit operation needs to be stable and reliable.

In the middle of the night, each production team was on standby and sticking to their posts. They deeply understood how important their work was, and they did their best to do their best, and they did not cheat at all.

Yu Hua and all the members of the design team also stayed at the experimental site and did not leave for half a step.

The industrial waste gas, which symbolizes high pollution, flocks into the night sky, polluting the surrounding environment. Industrial waste water enters the reservoir together with Baiyangdian Lake, polluting the water quality and poisoning fish and shrimp, while the high-purity sulfuric acid, which symbolizes money and hope, is pouring continuously. Storage tank.

This is the best time and the worst time.

On the 12th hour of the first trial production, at 4:11 a.m., the prototype of Yu’s Seven Pagodas was running at full load for 0.89 hours. The state was reliable. All pressure gauges and parameters were normal. Each production team was already familiar with the entire production mode, and their proficiency was improved. This increases production efficiency, the current hourly flow is about 97.1 tons, and the actual output rate rises to [-]%, exceeding the indicator line.

Yu's Seven Towers R&D project No. 19 days, the first trial production process is more than half.

"Huh..." Lin Wan held a notebook in her left hand and recorded the hourly traffic data in detail in her right hand. After she was done, she swayed slightly and felt dizzy, so she quickly supported the table with her hands.

"Is something wrong? Jin Yu." Seeing this, Yu Hua stepped forward and asked.

"It's okay, I'm just a little dizzy, and my eyelids are fighting." Lin Wan shook her head, her tone full of exhaustion, and said softly.

Not only Lin Wan was tired, Fang Yu and Zhou Yuan, members of the design team, all showed signs of exhaustion.

"It has been 23 hours since five o'clock yesterday morning, why don't you go to sleep first, and I will call you later." Yu Hua said softly.

"No, I can still hold on. This is the most important moment for the Seven Pagodas of the Yu Family. I can't sleep." Lin Wan shook her head and said.

Fang Yu and Zhou Yuan nodded.

"Okay, there are still twelve hours left, we have already seen the dawn of victory, come on." Feeling the attitude of the three, Yu Hua no longer discouraged him, and cheered.

Whether from a physiological point of view or from a psychological point of view, everyone has reached the limit and is on the verge of collapse.

For so many days, everyone hadn't had a good night's sleep. Basically, they only slept for four or five hours before starting a new round of work. Fang Yu had a menstrual period on the way, and endured physical discomfort at the experimental site. Running around, even if Yu Hua persuaded him, it was useless.

And all this for success.

Twelve hours left, and victory was already ahead.

"Come on." The three of them looked at each other with a firm look in their eyes, and nodded in unison.

……

Time is passing away like quicksand, hour after hour passed, and in the blink of an eye, No. 19th at 03:30 pm, 23 hours and 10 minutes have passed since the start of trial production, and there are still 10 minutes left before the actual daily production data is collected.

The sun in the afternoon was hot and poisonous, as if it was about to cook people.

In the experimental site, all the project participants were present. The elegant man and Liu Wei stood on the podium, and their eyes with different colors were all placed on the prototype of Yu's Seven Pagodas, which was stably producing sulfuric acid.

Yu Hua, the team leader, stood at the forefront, with three members of the design team behind him.

"Collecting flow parameters." As the minute hand of the watch accurately returned to zero and the hour hand pointed to four o'clock, Yu Hua's mind remained clear, and the golden math symbols released a cold meaning to relieve brain fatigue. The whole person took a deep breath and issued a new order.

The dispatcher immediately waved the flag and conveyed the order, and the production team on the other side immediately executed it, collected a new round of flowmeter data, and sent it to the podium.

This is the last piece of traffic data, recording No.20's four-hour traffic data.

Yu Hua took over the newly collected data information, and then added the hourly flow data of the past 23 hours together for calculation to obtain the 24-hour sulfuric acid production and production change trend, and then made it into a simple data visualization sketch.

Data visualization sketches allow people to understand the entire data information more intuitively.

In the field, it was quiet.

Everyone waited silently, their hearts were very nervous, and they didn't dare to breathe.

Pass or fail?

Three minutes later, Yu Hua picked up a piece of paper recording 3-hour sulfuric acid production data, turned around, and faced the crowd.

"The first trial production data of Yu's seven-tower prototype is as follows: the actual output of sulfuric acid in 24 hours: 21.12 tons, and the output per hour is 0.88 tons, which is 96% of the designed output, which meets the requirements of the trial production index."

"Comrades, we have succeeded!"

The words were full of solemnity, and Yu Hua announced the final results of the trial production and the actual output to everyone at the scene.

Trial production is passed, and the actual output is qualified.

boom!
In an instant, after a brief period of calm, the entire experimental field immediately fell into a sensation. Everyone was very excited, and the emotions that had been accumulated in their hearts seemed to burst out like a dyke. They did it.

"Okay, okay, great!"

The elegant man standing at the forefront raised his hands and applauded quickly, applauding Yu Hua who was standing in front of the podium, and said a few words in succession: "This is a victory, a victory in the technical field, its importance is no less than that. To annihilate a division of the enemy, no, it should be an army!"

It worked!
It took 200 days, the crystallization of Yu Hua's hard work and more than [-] sweats - Yu's Seven Pagodas project, officially declared a success.

With Yu's Seven Pagodas technology, the base area with weak economic foundation and backward development level will be injected with a shot of stimulant.

In terms of economic benefits alone, the sulfuric acid industry based on Yu's Seven Towers technology can generate millions of silver dollars or even tens of millions of silver dollars every year, not to mention the important role of sulfuric acid in the field of military industry and iron and steel smelting.

Hearing the final result announced by Yu Hua, the three of Lin Wan and Lin Wan, who had endured for more than 30 hours, showed comfortable smiles on their faces and applauded enthusiastically.

The applause was like a tidal wave, and everyone gave heartfelt applause for the results of the experiment and Yu Hua, the founder of the Seven Pagodas of the Yu Family.

With a smile on his face, Yu Hua calmly accepted the applause from these pioneers. He is qualified to accept this applause because he brought the new seven-tower device that appeared in the 50s to the Marco Polo Bridge Incident in 1937. eve.

Be calm, accept it!
"Bang!" Not far away, the entourage belonging to the elegant man raised the camera in his hand, found the right angle, and pressed the shutter.

The picture is frozen. In the black-and-white photo, the blue sky, the experimental site, and the Seven Pagodas of Yu's are in the background. Yu Hua, who is standing on the podium, is smiling, and the elegant man, Liu Wei, the design team members and the project are warmly applauding in front. group of workers.

At this moment, history freezes.

(End of this chapter)