New approaches to carbon dioxide utilization
Thread Content
Since the goals of reaching carbon peak by 2030 and achieving carbon neutrality by 2060 were set, how to reduce carbon dioxide emissions and what to do with carbon dioxide have become topics of focus for people today. As we all know, China currently has the highest carbon emissions in the world. Depending on the different calculation methods, its annual emissions range from 10 billion to 13 billion tons, accounting for about one-third of the world’s total emissions. In 2019, China accounted for over 30% of the world’s total carbon emissions while generating 16% of the global GDP. Its carbon emissions per 10,000 yuan of GDP were 1.88 times the world average, which put it under significant pressure in international climate negotiations.
Currently, the ways in which carbon dioxide is processed and utilized are as follows: first, industrial use, such as in oil fields where carbon dioxide can be used to enhance oil extraction rates; second, use in the food industry, such as in beer and cola, where it helps to consume a portion of； Third is CCUS, which refers to the capture and storage of carbon dioxide. It involves capturing the carbon dioxide emitted by power plants or other factories, and then storing it in underground storage facilities or abandoned oil reservoirs.
However, the amount of carbon dioxide used in the industrial or food sector is quite limited; it’s a drop in the ocean compared to the hundreds of billions of tons of emissions produced. Moreover, this carbon dioxide cannot be completely eliminated either, and it eventually makes its way back into the air – for example, when we drink cola, the carbon dioxide is released again through burping. The current cost of CCUS is extremely high; it costs around 500 yuan to treat one ton of carbon dioxide, a price that is even higher than that of one ton of coal. This is one of the main reasons why this technology struggles to be widely adopted.
This post was last edited by The wise are enlightened on 2020-12-27 at 13:14. Experts have provided two options for everyone’s reference. The first option is the “industrial carbon sequestration method”. The principle behind this is that when fossil fuels (coal, oil, natural gas) are used, they are first oxidized with pure oxygen, allowing carbon dioxide, nitrogen, and hydrogen to be separated. At this point, carbon dioxide can be directly converted into triazine alcohol, a solid substance with a high fixed content, significant reaction heat, and lower energy consumption in the production process. The energy released during this process and the remaining hydrogen can be used to generate electricity or provide heating. This method is capable of absorbing large amounts of carbon dioxide; producing one ton of triazinol requires the consumption of one ton of carbon dioxide. Triazinol has a wide range of applications, offers high added value, is non-toxic and odorless, and is resistant to high temperatures and corrosion. It can be used in building decorations, transportation vehicles, mechanical and electrical equipment, and even in the aerospace industry. For more details, see: 【HaiChuan Chemical News】A new development pathway for coal chemical technology – stable solid product triazinol @Fish in the Desert https://bbs.hcbbs.com/thread-2728336-1-1.html
This post was last edited by Zhizhi Ming on 2020-12-27 at 13:19. The second option is the “coal chemical hydrogenation method”. For example, in the process of producing methanol from coal, coal is gasified through water-coal slurry to produce carbon monoxide, carbon dioxide, and hydrogen. During this process, a large amount of carbon dioxide is generated, and this carbon dioxide is released into the air. If hydrogen is added during the synthesis process, the excess carbon dioxide can be utilized, thereby reducing carbon emissions. The regions in China where coal chemical industries are concentrated, such as Inner Mongolia, Xinjiang, and Ningxia, are areas rich in new energy sources. If hydrogen is produced using electricity that would otherwise be wasted from wind and solar power, and then this hydrogen is used in coal chemical processes, it not only increases the output of coal chemical products but also reduces carbon emissions – isn’t that a win-win situation? See the case: The largest in the world! CNOOC’s 5,000 tons/year CO2 hydrogenation to methanol project successful https://bbs.hcbbs.com/thread-3098415-1-1.html
Is it an idea to use artificial photosynthesis to consume carbon dioxide and produce oxygen?
Talk to experts to see if the idea can be turned into a plan.
The resource potential of carbon dioxide will be gradually tapped
In fact, this algorithm is incorrect. China is the world’s manufacturing hub, so it naturally has high carbon consumption. This evaluation is like considering hospitals as the places with the highest mortality rates in a city – how can we reduce those mortality rates? ? ?
Reducing consumption of fossil fuels as much as possible is a fundamental approach; increasing the comprehensive use of solar energy is another aspect, and energy-saving technologies also play a role in this regard
Carbon dioxide is hydrogenated to produce methanol, and methanol is converted back into carbon dioxide; eggs give rise to chickens, and chickens give rise to eggs – how similar it is...