CO2 recovery and purification system is a kind of equipment that separates the high temperature and low concentration CO2 exhaust gas released by coal, gas, oil or heating from other components and impurities in power plants, boiler plants, lime kilns, cement plants and so on with the help of PSA process to obtain CO2 product gas storage.

The PSA process mentioned in the equipment is a very mature and efficient physical separation method, which will not generate other by-products while recovering CO2, and is very friendly to the environment.

1. Reduce greenhouse gas emissions

Environmental protection: Carbon dioxide is one of the main gases causing the greenhouse effect, recycling and purification equipment can effectively capture CO2, fundamentally reduce greenhouse gas emissions.

Reduce emissions costs: With the increasingly stringent global environmental regulations, enterprises will face fines and legal risks of excessive emissions, and the use of carbon dioxide recovery and purification equipment can reduce these risks and avoid unnecessary legal disputes and fines.

Reduce fossil fuel dependence: Carbon dioxide can also be converted into gas or biomass fuel, thereby reducing the demand for fossil fuels, reducing energy security risks while reducing carbon dioxide emissions, and promoting green energy development.

2, waste reuse

Resource recovery: Recycling and purification equipment converts carbon dioxide waste gas into high-purity carbon dioxide, making it recycled and reused to improve resource utilization.

Saving on disposal costs: By recovering and reusing carbon dioxide, companies can reduce waste disposal costs and improve economic efficiency.

Therefore, carbon dioxide recovery and purification equipment can play an extremely important role in environmental protection and resource recycling. It is believed that in the near future, it will play a more important role in achieving the goal of carbon neutrality and sustainable development, and continue to improve the human living environment.

CO2 recycling plant product presentation

“CO 2 recovery plants” are facilities specifically designed for the capture, treatment, and reuse of CO 2 emissions.
These plants usually use advanced technology and equipment to extract carbon dioxide from various sources. Industrial waste gas, power plant emissions, and chemical industrial processes are common sources. Capcaptured CO 2 goes through a series of purification, compression and treatment processes to achieve the desired purity and quality levels. The significance of a carbon dioxide recovery plant is multifaceted. First, they help reduce the carbon 2 content in the atmosphere and help mitigate the effects of climate change. Second, the recovered carbon dioxide can be used in many fields. In the food and beverage industry, it is used for the production of carbonated drinks and food preservation. In the industrial field, it is converted to dry ice for fire fighting and cleaning purposes. In agriculture, it can be used to promote plant growth in the greenhouse. In addition, many CO 2 recovery plants continue to conduct research and development to improve recovery efficiency, reduce costs, and expand the scope of CO 2 recovery applications, thus promoting a more sustainable circular economy. To mitigate climate change and global warming.
 

Functions and goals

• Carbon dioxide capture: Carbon dioxide recovery plants first capture carbon dioxide emissions from industrial processes, power plants or other sources. Common methods include adsorption, absorption, membrane separation and other techniques.
• Carbon dioxide treatment: The captured carbon dioxide is treated to remove impurities and improve purity. This step usually involves the compression, cooling, and purification processes.
• Carbon dioxide storage: The treated carbon dioxide can be compressed and stored in underground geological structures, such as oil fields, gas fields, or salt holes. This method is called geological sequestration.
• Carbon dioxide utilization: Another treatment option is to convert carbon dioxide into useful products, such as synthetic fuels, chemicals, or building materials. Using technology can make carbon dioxide into an economically valuable product, while reducing its environmental impact.
   

Importance

• Climate change mitigation: Carbon dioxide is one of the main greenhouse gases, and its increased concentrations can lead to higher global temperatures. Recycling and storing CO 2 helps to slow this trend.
• Support for renewable energy: By capturing and utilizing carbon dioxide, carbon dioxide recovery plants can support an energy transition based on low-carbon technologies.
• Industrial and economic benefits: Recycling carbon dioxide can also create economic benefits for industry, such as through the production of new materials or energy, or through the regulatory and tax costs of reducing carbon emissions.
   

Technology and challenges

• Technological progress: At present, carbon dioxide recovery technology is constantly improving, including improving capture efficiency, reducing cost, enhancing storage safety and other aspects.
• Economy: Despite technological advances, the economics of carbon dioxide recovery remains a challenge. The costly capture and storage processes need to be reduced through policy support or technological breakthroughs.
• Social acceptance: The long-term safety of CO 2 recovery and storage and its impact on the environment still need further research and social acceptance.

Domestic CO2 recycling technology status (application)

1 Oilfield production aid agent
The application of CO2 to the oil recovery technology can improve the recovery rate of the oil field. After two oil recovery Wells, it can be injected with CO2 for the third time. Under the action of high pressure CO2, the residual underground oil flows to the direction of the oil well and is ejected to the ground, so as to improve the crude oil production rate and seal a large amount of CO2 underground. In China, CO2-EOR pilot tests of CO2 oil flooding and storage potential evaluation in Junggar Basin have been conducted, and the oil flooding effect is obvious and good production effect has been achieved. Yanchang Petroleum carried out CO2 flooding pilot test in Qiaojiawa and Wuqi Yougou oil areas in Jingbian, and the CO2 storage potential was about 404.12104 t, which improved the oil recovery of low permeability reservoir. Yanchang Petroleum CCUS project has realized CO2 recycling, energy saving and emission reduction in the coal chemical industry in northern Shaanxi, providing experience and demonstration for the low-carbon and clean utilization of fossil energy.

2 Food industry
High concentration of CO2 can reduce oxygen content, inhibit biological respiration of fruits and vegetables, and prevent the occurrence of bacteria. Therefore, CO2 has great application potential in the food industry, and is often used as a protective gas to preserve food. In addition, CO2 will also be used in the beverage industry to produce carbonated drinks. In December 2009, Huaneng Shanghai Shidongkou No.2 Power Plant built a CO2 capture device, which produced food grade CO2 10 10,000 t every year, which was the largest flue CO2 capture device of coal-fired power plant in the world at that time.

3 Agriculture
CO2 Is an indispensable raw material for the photosynthesis of green plants. Pure CO2 is commonly used as a fertilizer to promote the growth of crops faster and taller, improve the yield and improve the varieties. According to the data, with pipe discharge of CO (volume fraction is 2 2.0%~5.0%) for 6 d~38 d, vegetables can increase production by 17.5%~45.5%, and the maturity period can be 2 d~5 d earlier. In recent years, CO2 as a gas fertilizer throughout the country, bringing good economic benefits.

4 Other industries
In the textile industry, supercritical CO2 is used for dyeing, which has the advantages of short dyeing time, cutting cutting and green environmental protection, and reduces the high cost of staining processing after dyeing. CO2 But also play a gas criminal clean crime agent, will not destroy the fire environment, nor corrode valuables and equipment. However, the CO2 capture utilization techniques are inadequate. Regardless of last week, the existing CO2 capture recovery utilization mainly adopts the method preservation application to reduce the physical greenhouse effect. Liplying or making dry ice only transfers CO2, resulting in consumption. The injection of CO2 into deep underground or seawater storage has geological structural complexity and environmental safety risks, which may lead to CO2 leakage. CO2 Catch and storage technology (CCS) does not change the chemical structure of CO2, but only seals up, and does not really use CO2 resources.

Co2 recovery system

CO2 The recovery device obtains CO2 gas from the fermentation process, and goes through a series of purification processes, namely-stainless steel CO2 foam trap separation gas, deodorant. At the same time, high-purity CO2 is essential for the production process of modern breweries. Our CO2 recovery unit meets all the requirements of highly efficient C O2 treatment: maximum purity, minimum O 2 content, and maximum yield.

The co2 recovery process
The first step in the volume reduction is the two-level compression. A dry piston compressor is used to compress the fermented carbon dioxide to one-sixteenth of the original gas volume. Install a drying device for the CO2 recovery device after the CO2 compressor. It consists of two adsorption tanks equipped with a desiccant molecular sieve. To remove residual water from the gas, carbon dioxide flows through one tank, while the other tank is regenerated by a heater. In the gas purifier installed after the drying device, it also consists of two containers to remove substances that affect odor and taste.

With the same equipment design, the only difference between the purifier and the dryer is filled with special activated carbon. In the next stage, CO2 is liquefied in a shell-tube heat exchanger, and inert gases such as O2 and N2 are removed.