Zheng Chuguang, director of the State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology: Some people feel headaches when they talk about carbon dioxide. They think that it is a burden on human development. This is a devaluation of carbon dioxide. Carbon dioxide is not only a greenhouse gas, but also a resource that can be used. It is not only an important raw material for food, fertilizer and other industries, but also the best medium for enhancing oil recovery. While enhancing oil recovery, CO2 also replaces crude oil and is stored in oil and rock for a long period of time to achieve true scale reduction. Valve Accessories,Solenoid Valve Accessories,Hydraulic Solenoid Valve Accessories,Hydraulic Valve Accessories Shanghai Jinhai Hydraulic Co.,Ltd , https://www.shanghaijinhai.com
In 2006, the Ministry of Science and Technology approved the National Major Basic Research and Development Program for “Resource Utilization and Underground Sequestration of Greenhouse Gasesâ€, and launched a new type of oxygen-enriched combustion to achieve carbon dioxide enrichment and enhanced oil recovery. system Research. The results of the study showed that oilfields across the country can increase oil recovery by 8% to 10% through CO2, and the potential for increasing oil production is between 5 billion and 6 billion tons. At the same time, the potential for large-scale storage of carbon dioxide through the reservoir is between 13 billion and 15 billion tons. According to the annual emission reduction of China's major industrial sources, it is estimated that the amount of emissions can be reduced by 80 to 100 years.
The combination of oxygen-enriched combustion technology captured by carbon dioxide from coal-fired boilers and enhanced oil recovery by carbon dioxide from tertiary recovery is expected to be a route to large-scale CO2 emission reductions and resource utilization in line with China's national conditions. At present, the theory and technical conditions of the project demonstration have matured.
Xu Welfare, Research Fellow and Fertilizer Specialist, Institute of Soil and Water Conservation, Chinese Academy of Sciences: Carbon dioxide is waste in our view. It is a nutrient in plants. Fertilizers that are widely used today cannot replace the role of carbon dioxide. I have done experiments. As long as the carbon dioxide concentration is doubled, the crop yield can be increased by 50%. The pests and diseases of vegetables are reduced and they look good. The use of carbon dioxide as fertilizer needs to be used under confined conditions. The construction cost of a 1 mou greenhouse is 20,000 to 30,000 yuan, compared to the input cost of carbon dioxide of only 600 yuan. If 10% of greenhouses can use carbon dioxide as fertilizer, the amount will be very significant.
Shao Shou, deputy general manager of Jiangsu Thorpe Group Co., Ltd.: Carbon dioxide is no longer an exhaust gas but a raw material for chemical production. In December 2009, with the commencement of production of a 600,000-ton/year acetic acid gasification process (methanol plant), the company produced 2-3 million tons of carbon dioxide per year. After three months of research, our company's technical staff realized the recycling of carbon dioxide, making waste carbon dioxide a raw material, and directly into carbon monoxide after entering the acetic acid plant. This will not only achieve annual reduction of more than 80,000 tons of carbon dioxide, but also increase the benefits of more than 30 million yuan. According to calculations, with the commissioning of the company's three phases of acetic acid, one year's recovery of carbon dioxide will reach 180,000 tons, and the annual increase in profit will be more than 80 million yuan. Therefore, while promoting the reduction of CO2 emissions, our company has also made the recycling of carbon dioxide an economic growth point that optimizes the industrial structure and has achieved economic benefits.
Xue Ding, a senior engineer at Tianjin Lianbo Chemical Industry Co., Ltd., has become a hotspot in current scientific work by converting carbon dioxide into more value-added energy, chemical raw materials and fine chemicals through chemical and biological methods. Some chemical experts have put forward many ways and ideas for the use of carbon dioxide. For example, the use of carbon dioxide to produce dimethyl carbonate technology can convert large amounts of carbon dioxide emitted from industrial production into fine chemical products such as dimethyl carbonate; by using oxo synthesis and other process technologies, carbon dioxide and hydrogen can be reacted to produce methane, methanol, and carbon fiber. , engineering plastics, asphalt, and construction materials can not only reduce CO2 emissions, but also broaden the space for hydrogen energy utilization. At present, there is an order of magnitude difference between the comprehensive utilization of carbon dioxide and the amount of carbon dioxide emitted from the use of fossil raw materials. Although it is still not a major measure for reducing greenhouse gas emissions, it is one of the effective ways to use carbon-rich resources that are abundantly present. There is no doubt that there are many aspects such as environmental resources and economic benefits.