CO2 Processing Plant (Carbon dioxide treatment Plant) is an advanced facility designed to capture, process and convert carbon dioxide to address the challenges of climate change and environmental protection. These plants use a variety of technologies to efficiently capture and reuse or safely store carbon dioxide from industrial production and energy conversion, thus reducing the concentration of carbon dioxide in the atmosphere and promoting sustainable development.

The principle of carbon dioxide capture and utilization technology is mainly divided into three steps: capture, conversion and utilization.

Capture

Capture carbon dioxide from industrial emission sources such as coal-fired power plants and steel mills through technologies such as adsorbents and membrane separation. Adsorbent is a material with a high specific surface area and porous structure that can selectively adsorb carbon dioxide; membrane separation uses the difference in the permeability of different materials to carbon dioxide to achieve carbon dioxide separation.

Conversion

Convert the captured carbon dioxide into valuable chemicals or fuels through technologies such as photocatalysis and electrocatalysis. Photocatalytic conversion uses light energy to excite catalysts to cause carbon dioxide to undergo chemical reactions; electrocatalytic conversion converts carbon dioxide into fuels or chemicals through electrochemical reactions.

Utilization

The converted chemicals or fuels are used in power generation, transportation and other fields to achieve sustainable use of energy.

Technical route

The technical route of carbon dioxide capture and utilization technology mainly includes the following directions.

Research and development of efficient adsorbents

Develop adsorbents with high adsorption capacity and good regeneration performance to improve the capture efficiency of carbon dioxide.

• Optimization of membrane separation technology

Improve the performance of membrane materials and improve the separation efficiency and flux of membrane separation technology.

• Breakthrough in photocatalytic conversion technology

Develop new photocatalysts to improve the conversion efficiency and selectivity of photocatalytic conversion technology.

• Innovation of electrocatalytic conversion technology

Develop efficient electrocatalysts to achieve efficient conversion and utilization of carbon dioxide.

• System integration and optimization

Integrate and optimize capture, conversion and utilization technologies to form a system with practical application value.

Properties of carbon dioxide

Physical property:

In general, carbon dioxide is a colorless, odorless gas that solves in water and is about 1 or 5 times the density of air- -more dense than air (collected by upward air discharge).

Chemical property:

1. Reaction with water. Phenomenon: The purple litmus test fluid turns red.

Chemical equation: CO2 + H2O=H2CO3 (carbonate acid makes the purple litmus red, not carbon dioxide makes the purple litmus red).

2. Reaction with the clarified lime water. Phenomenon: clear lime water becomes turbid.

Chemical equation: CO2 + Ca (OH) 2=CaCO3 + H2O is used to test the carbon dioxide.

3. Use it for fire fighting. Nature: No combustion, no support for combustion.

Main functions

• Carbon dioxide capture: using advanced capture technology, such as chemical absorption, physical adsorption and membrane separation, to efficiently separate carbon dioxide from the waste airflow.
• Carbon dioxide purification: further purification of the captured carbon dioxide to remove impurities and ensure the availability of high purity carbon dioxide.
• Carbon dioxide compression and storage: the purified carbon dioxide is compressed into a liquid or supercritical state for easy storage and transportation, and can be stored in underground geological structures for a long time.
• Carbon dioxide conversion and reuse: converting captured carbon dioxide into useful products such as synthetic fuels, chemicals or building materials for the reuse of resources.

Main applications

• Industry and manufacturing: Capture and treat carbon dioxide in steel, cement, fertilizer and other industries to reduce carbon emissions.
• Energy industry: Capture carbon dioxide in coal and natural gas power plants, reduces greenhouse gas emissions, and is used to improve oil and gas recovery.
• Chemical industry: Using captured carbon dioxide to produce chemicals, such as methanol and carbonate, driving the development of green chemicals.
• Food and beverage industry: Provide high purity carbon dioxide for the production of carbonated drinks and food preservation.
• Environmental protection: significantly reducing carbon dioxide emissions and mitigate the impact of global warming and climate change.
• Efficient use of resources: to convert carbon dioxide into valuable products, improve the efficiency of resource utilization, and reduce the dependence on raw materials.
• Economic growth: Creating new economic opportunities and jobs, and promoting the development of green technology and industries. CO2 Processing Plant It is not only an important tool to address current environmental challenges, but also a key facility for promoting green economy and sustainable development. Through the efficient management and utilization of carbon dioxide, these treatment plants have made an important contribution to achieving global emission reduction targets and building a low-carbon future.