Chapter 931: Capture of one million tons of carbon dioxide!
Jinling, Hexi New Town.
At the entrance of the square of the building, a group of Jinling city leaders in suits and ties were standing at the entrance of the tallest building in Wanda Plaza, with the air conditioner blowing on their backs and their front faces facing the hot May wind, waiting there.
This scene attracted the attention of many residents who were working here or passing by for fun. They looked at it curiously and speculated which big leader was coming to inspect.
When he saw the Hongqi car slowly approaching from a short distance away, the leader standing in position C's eyes lit up and he walked over quickly.
"Academician Xu, welcome, welcome to Wanda Plaza to inspect the work."
The leader of Jinling City who took the lead extended his hands enthusiastically and said hello with a smile on his face.
Xu Chuan smiled and stretched out his hand, shook it and said, "Secretary Yu, I'm sorry to keep you waiting for so long."
Yu Xiangdong held Xu Chuan's hand with both hands and shook it, then said with a smile: "In other words, Academician Xu, you are too polite. We have only been here for less than two minutes."
After exchanging a few words, he looked at Xu Chuan, stepped aside slightly, and said with a smile: "It's already getting hot in May. Let's go in and talk first, Academician Xu, please."
For the leaders of a sub-provincial city like Jinling City, under normal circumstances they would not be so courteous even to an academician.
But the one in front of me is different. There are many academician-level scholars, but in today's society, there is probably only one scholar like this one who can reach the Heaven Hall and directly influence the development of the entire country and even the world.
Even if we look through the decades of founding history of the People's Republic of China, I am afraid that there is no one who has done it before or since.
Xu Chuan didn't pay much attention. He raised his head and looked at the tall buildings in front of him.
This is a new urban center developed in Jinling City in the past ten years with five major functions: finance, commerce, commerce, exhibitions, and culture and sports.
It is also one of the areas with the highest concentration of 100-meter-tall buildings in Jinling City.
Not only are there many skyscrapers over 100 meters tall, but these buildings are used for a variety of purposes, including office buildings, hotels and commercial purposes, etc.
For example, Wanda Plaza, Hexi Youth Olympic Center, Jinao Building, Sujiang Radio and Television City.
Of course, while dense skyscrapers and urban buildings bring prosperity, they also bring considerable environmental problems.
Urban heat island effect Higher concentrations of greenhouse gases create a more severe climate.
In summer, theoretically, the core area of a large city can be 3-5 degrees Celsius higher than the city periphery, and 5-8 degrees Celsius higher than nearby rural areas at the same latitude.
And these are just theoretical figures. In fact, in reinforced concrete cities, the body temperature can sometimes be ten degrees higher than in rural areas, or even higher.
Cities and roads built with cement or asphalt have a much higher capacity to absorb heat than soil.
In addition, there are too many high-rise buildings in the city, there are no trees and water resources, and the air circulation is relatively poor. The urban temperature in summer will far exceed the theoretical temperature.
This time, the porous liquefied DAC carbon dioxide trap is used to renovate high-rise buildings to alleviate the greenhouse effect by absorbing various greenhouse gases such as carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, etc., and by promoting air flow.
, reduce summer temperatures in large cities.
Of course, just retrofitting high-rise buildings and deploying porous liquefied DAC carbon dioxide traps is certainly not enough.
Correspondingly, urban greening, transportation, building density, traditional fuel vehicles, industry and other aspects need to be transformed to a certain extent in order to maximize the reduction of the urban heat island effect and the urban temperature.
...
After entering the building, Xu Chuan chatted with the leader of Jinling City about the urban transformation project, and took the elevator all the way to the floor where the porous liquefied DAC carbon dioxide trap was deployed.
In fact, it is not particularly difficult to retrofit carbon dioxide traps in high-rise buildings over 100 meters tall, and it does not require spending huge amounts of money to empty a floor.
Generally speaking, high-rise buildings with a building height of more than 100 meters usually have part-time or dedicated equipment floors.
Although the porous liquefied DAC carbon dioxide trap occupies a relatively large area, the area it occupies is actually the exterior wall space.
In the Chuanhai Materials Research Institute, there is a giant equipment with a length of five meters by three meters. It is a device that integrates carbon dioxide capture and conversion.
If it is a simple trap, it actually only has a network wall composed of an ion exchange membrane and isophorone diamine.
To put it simply, you can think of it as a wall, except that this wall is thicker than an ordinary wall.
During the renovation, it will replace the outermost non-load-bearing wall of the high-rise building with a flat carbon dioxide capture device, which will not have a particularly large impact on the internal space.
As for devices that convert carbon dioxide into oxygen, starch, glucose, gasoline, graphene and other materials, they can be placed on other floors.
In addition, for high-rise buildings, in addition to the equipment floor, there are actually areas for renovation.
According to national standards, a 100-meter-long building must have an refuge floor every 10 to 15 floors.
Although people are usually not allowed to live on the refuge floor, offices are also not allowed.
But it can be used as an equipment layer to place some facilities, and must be equipped with fire hydrants, emergency telephones, sprinkler fire extinguishing devices, emergency lights, etc.
The transformation of the outer wall with carbon dioxide traps will not have a big impact on the internal refuge space of the refuge floor, as long as enough disaster relief channels are left in accordance with the national standard refuge requirements.
This is also the reason why Jinling City Government chose to agree to carry out large-scale urban reconstruction.
If it is necessary to clean out a separate commercial floor, even if it is just to change the exterior wall, the cost will be too high.
After all, the more sophisticated the city, the greater the value of these commercial floors, and it may be difficult for the Jinling City Government to make a choice.
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Taking the elevator all the way to the floor where the porous liquefied DAC carbon dioxide capture equipment was deployed, Xu Chuan saw the completely completed site.
What is slightly different from the ordinary floor is that because the carbon dioxide trap replaces the exterior wall, the interior of the renovated equipment floor does not have much external light.
However, this does not affect floors that are not used or worked on on a daily basis.
After observing these modified porous liquefied DAC carbon dioxide traps and understanding some safety and other aspects of work, Xu Chuan came to the carbon dioxide conversion device deployed on the equipment floor.
It took Chuanhai Materials Research Institute several years to create carbon dioxide conversion technology based on predecessors. Naturally, he had read the detailed information.
These devices that look similar to the outdoor units of central air conditioners are actually an 'artificial photosynthesis' system.
Of course, it does not use light energy, but electrical energy.
Driven by electrical energy, it can combine carbon atoms together to form hydrocarbons or electrolyze oxygen at a higher efficiency than traditional converters.
Its core is the outstanding ability of efficient, large-volume and stable continuous production. As for the power consumption...
Now that controllable nuclear fusion technology has been realized, is there any cheaper energy than electricity?
Looking at the equipment in front of him, Xu Chuan asked curiously: "If I remember correctly, the carbon dioxide trap and converter should have been put into trial operation for a period of time before, right?"
This time he is here to participate in the start-up and operation meeting of the porous liquefied DAC carbon dioxide trap. It does not mean that these devices have not been put into trial operation before.
After all, if a project is to be officially launched after acceptance, it needs to conduct a trial run of the equipment and check the results.
On the side, the person in charge of the entire Jinling City renovation project quickly replied: "Yes, the equipment deployed in Wanda Plaza has been running for some time."
Xu Chuan asked with interest: "If they have been running for a period of time, these converters should have converted oxygen, hydrocarbons and other substances? I would like to see if there are any materials converted by this equipment."
"Of course, please wait a moment." The person in charge replied quickly and walked towards the inner room where the device was deployed.
Xu Chuan followed curiously. In this rather small room, he saw rows of cabinets with products of various shapes placed on them.
Based on the tags, the project leader found two recently converted products.
A small portable oxygen bottle and a bottle of methanol in clear glass.
"Academician Xu, these are the two products converted during the trial operation. This is the high-concentration oxygen produced by electrolysis, and this is the synthesized methanol."
"Only the latest batch of samples are kept here, and the industrial products converted from previous trial runs have been transferred away."
Xu Chuan was keenly aware of the meaning, but right now he was more interested in the synthesized methanol and small oxygen bottles.
After taking the sample from the person in charge and looking at it, he walked towards Zheng Hai who was following him.
"Have you brought your lighter and cigarettes? Let me use them."
Hearing this, Zheng Hai was stunned for a moment, and then took out a pack of cigarettes from his body.
He is an old smoker. He does carry cigarettes and lighters with him, but he usually doesn't smoke when he is following Xu Chuan. He only smokes one when he finds free time and enjoys it.
After placing the two samples on the ground, Xu Chuan took out a cigarette from the cigarette case, lit it and stuffed it into Zheng Hai's hand.
"Get it for me."
Zheng Hai took the lit cigarette without understanding why Xu Chuan wanted to do it.
Xu Chuan didn't explain either. He returned the methanol bottle to the project leader, took the oxygen bottle and carefully unscrewed the valve. The high-concentration oxygen stored inside was released and sprayed onto the cigarette in Zheng Hai's hand.
In an instant, the cigarette, which originally had only a little flame, burned explosively, and a dazzling yellow flame appeared in front of everyone's eyes.
Xu Chuan nodded with satisfaction and screwed on the valve of the oxygen cylinder.
It is indeed a high concentration of oxygen.
Watching Xu Chuan tossing the oxygen bottle in his hand, Zheng Hai was stunned for a moment, and then he reacted with a helpless smile on his face.
I have been with this person for several years, and this is not the first time I have had such sudden thoughts and actions.
If it were anyone else, I'm afraid they wouldn't be able to personally test the product at the project site, but the person he followed did it without any scruples.
As for why he did this, he could guess some reasons.
It's just that I'm interested and want to see if these manufactured products are genuine.
........
After a simple test, Xu Chuan returned the product in his hand to the person in charge who was still stunned, and asked: "I remember you just said that most of the products converted during the previous trial operation were shipped away.
?”
After hearing the inquiry, the person in charge came back to his senses, nodded and said, "Yes."
"What is the conversion efficiency? How much carbon dioxide can the carbon dioxide capture equipment and converters deployed here at Wanda Plaza capture and how much oxygen can be converted into products such as methanol every day?"
Upon hearing this question, the project leader, whose name is still unknown, quickly replied.
"There are two buildings over 100 meters tall in Wanda Plaza, and a total of six sets of large-scale DAC carbon dioxide traps are deployed. When operating at full power, they can capture about 1,600 tons per week, and an average of nearly 230 tons per day."
"The products it transforms..."
After hesitating for a moment, the person in charge said directly: "The amount of converted products is currently difficult to estimate, because we do not directly convert all the captured carbon dioxide into oxygen, methane, acetylene and other products.
"
"A lot of the carbon dioxide produced during the one-month trial operation was temporarily stored in other places, and not all of it was converted into other products."
Xu Chuan nodded and quickly calculated in his mind.
Just one Wanda Plaza can capture about 230 tons of carbon dioxide a day, or about 80,000 tons a year.
Although the other nine pilot projects do not have such large-area DAC carbon dioxide traps, according to previous information provided by the Jinling Municipal Government, the first phase of the project can capture at least 50,000 tons of carbon dioxide per year.
If the second and third phases of the project are continued, according to his standard conditions for deployment, the amount of carbon dioxide captured in Jinling City per year may reach more than one million tons.
Not to mention the impact on the temperature of the entire Jinling City after reducing one million tons of carbon dioxide, just one million tons of carbon dioxide is extremely valuable.
According to the data disclosed by the State Grid, in 2023, the country's largest coal power CCUS demonstration project, that is, the carbon dioxide capture and resource utilization project, will have approximately this number in the national statistical year.
But you must know that by the time of the CCUS demonstration project in 2023, the number of carbon capture projects built across the country will be close to 60.
With the power of one city, benchmarking the carbon capture project of the entire country, if it is placed before the realization of controllable nuclear fusion technology, China needs to cooperate with the world in carbon neutrality, this is simply a 'super big project'
Killer'.
Because if this technology is popularized, China's carbon neutrality will not be as tight as in previous years, and even some thermal power stations will be abandoned.
After all, one pound of carbon dioxide is the original carbon neutrality indicator. This technology will greatly liberate power generation and industry.
But now, its value is really not that great.
The indicator of carbon neutrality is almost meaningless to them today.
The value of this technology now is to capture carbon dioxide, convert it into products, and regulate urban temperature.
Of course, there is also a future development of Mars.
...
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