With the continuous improvement of environmental protection requirements and the comprehensive utilization of resources, the recycling and utilization of coke oven gas in China has received more and more attention, resulting in many different methods and ways of utilization. The reporter learned in an interview recently that industry experts generally believe that deep processing of chemical products with high added value is the best way out of various utilization channels.
The China Coking Industry Association secretary-general Yang Wenxuan introduced that in the past, most coking enterprises adopted the “daylight†indirect combustion method to treat coke oven gas, causing serious waste of resources and environmental pollution. In recent years, the use of coke oven gas has always been the focus of attention within and outside the industry. In addition to civilian fuels and power generation applications, the use of coke oven gas to produce fertilizers and methanol technology has continued to mature and has been successfully applied in China.
It is understood that the production of methanol from coke oven gas has been on the rise in China. Sailing Engineering Co., Ltd. (formerly the Second Design Institute of Chemical Industry) mastered the patented technology for the production of methanol from coke oven gas. In 2005, the first set of the 80,000 tons/year methanol plant for coke oven gas was built in Qujing, Yunnan Province. Successfully put into production; Yankuang Group independently developed coke oven gas methanol plant, so that the recovery and conversion rate of coke oven gas reached 96%. At present, the total production capacity of domestic methanol for coke oven gas is 3.12 million tons, and the annual consumption of coke oven gas is nearly 7 billion m3.
“The cost of chemical fertilizers for coke oven gas production is much lower than that of using anthracite as raw material to produce chemical fertilizers. The product performance is stable and easy to store, and it has a strong competitive advantage. However, the coke oven gas production process is complicated and the requirements for technology and enterprise management are high. All of them are relatively high, but at the same time, market factors must also be considered. Therefore, the use of coke oven gas for deep processing of chemical products with higher added value is a better way out,†said Yang Wenxuan.
Hu Haifeng, deputy director of the Shaanxi Provincial Petroleum and Chemical Industry Management Office, expressed the same view: “The coke oven gas power generation technology is mature, but it also faces unfavorable factors such as unstable raw material sources and difficulties in power generation and access to the Internet. Although coke oven gas production costs less, However, the production capacity of methanol in China is already overcapacity and the development prospects are not optimistic. Therefore, the current best way to use coke oven gas is to produce clean fuel oil.â€
Hu Haifeng said that coke oven gas production of fuel oil technology, Shaanxi Golden Nest Investment Co., Ltd. developed hydrocarbon-based synthesis gas production of clean fuel oil technology. This technology integrates China's gas purification and South African Fischer-Tropsch synthesis technology and uses hydrocarbon-based synthesis gas such as coke oven gas as raw materials to produce clean fuel oil, high-purity paraffin and other chemical products, and 10,000 m3 of gas can produce 0.6 tons. 0 # diesel and 0.9 tons of high-purity paraffin, with independent intellectual property rights. According to the person in charge of Shaanxi Golden Nest Investment Co., Ltd., the 10,000-ton industrialized installation test for hydrocarbon-based syngas production of clean fuel oil technology was successfully completed in Shaanxi Baoji and is currently actively promoting industrialization in the country. It will soon be located in Tangshan, Hebei, and Zaozhuang, Shandong. Two coking companies build large-scale production facilities. It is estimated that the coke oven gas produced annually with 1 million tons of coke can be used to produce 50,000 tons of clean fuel oil (including 20,000 tons of diesel oil and 30,000 tons of paraffin), and the annual new sales revenue will be nearly 500 million yuan.
Coke oven gas production of synthetic natural gas technology is also receiving much attention. At the 7th China Coking Technology and Coke Market International Conference held in Xi'an last month, the research and development of coke oven gas to synthesize natural gas (SNG) technology by the Southwest Research Institute of Chemical Industry and Design attracted great attention from the industry. Zhang Xinbo, technical director of Southwest Research Institute of Chemical Industry and Design, said that SNG technology is a new area of ​​coke oven gas utilization. Synthetic natural gas can be transported to users through pipelines and can be further processed into compressed natural gas (CNG) or liquefied natural gas (LNG).
"Compared with the production of methanol from coke oven gas and other processes, synthetic natural gas technology has the advantages of high raw material utilization efficiency, simple process flow, low investment, and high value-added products. A coking enterprise with an annual output of 1 million tons of coke is taken as an example. In the state, the surplus coke oven gas volume is about 230,000 m3/h, and the technology can be used to synthesize natural gas 10031m3/h. The equipment investment is 130 million yuan, and the coke oven gas price is 0.3 yuan/m3, and the synthetic natural gas production cost is about 0.87 yuan/year. M3, good economic benefits. Zhang Xinbo said. At present, they are conducting more extensive industrialization trials.
It is understood that China's exploration of efficient use of coke oven gas new technology is maturing. Institute of Physics and Chemistry, Chinese Academy of Sciences and Taiyuan Engineering Tiancheng Science and Technology Co., Ltd. implemented a new technology demonstration project for the comprehensive utilization of 120 million cubic meters of coke oven gas, using low temperature liquefaction separation technology to produce liquid methane and liquid hydrogen. This domestic first technology is being promoted; Taiyuan Iron and Steel Group The hydrogen sulfide gas in the coke oven gas is extracted and then concentrated sulfuric acid with a concentration of 98% is used as a raw material to produce ammonium sulfate. The coke oven gas is treated 13m3 per hour. The annual reduction in sulfur dioxide emissions is 12,238 tons and the production of 98% concentrated sulfuric acid is 18,800. Ton.
“Oxygen from coke oven gas is used to produce olefins and further deep processing of aromatics from the by-product tar to produce high-value-added chemical products.†Gu Zongqin, president of the China Petroleum and Chemical Planning Institute, was also held recently. The Coal Chemical Technology Forum stated this way.
The China Coking Industry Association secretary-general Yang Wenxuan introduced that in the past, most coking enterprises adopted the “daylight†indirect combustion method to treat coke oven gas, causing serious waste of resources and environmental pollution. In recent years, the use of coke oven gas has always been the focus of attention within and outside the industry. In addition to civilian fuels and power generation applications, the use of coke oven gas to produce fertilizers and methanol technology has continued to mature and has been successfully applied in China.
It is understood that the production of methanol from coke oven gas has been on the rise in China. Sailing Engineering Co., Ltd. (formerly the Second Design Institute of Chemical Industry) mastered the patented technology for the production of methanol from coke oven gas. In 2005, the first set of the 80,000 tons/year methanol plant for coke oven gas was built in Qujing, Yunnan Province. Successfully put into production; Yankuang Group independently developed coke oven gas methanol plant, so that the recovery and conversion rate of coke oven gas reached 96%. At present, the total production capacity of domestic methanol for coke oven gas is 3.12 million tons, and the annual consumption of coke oven gas is nearly 7 billion m3.
“The cost of chemical fertilizers for coke oven gas production is much lower than that of using anthracite as raw material to produce chemical fertilizers. The product performance is stable and easy to store, and it has a strong competitive advantage. However, the coke oven gas production process is complicated and the requirements for technology and enterprise management are high. All of them are relatively high, but at the same time, market factors must also be considered. Therefore, the use of coke oven gas for deep processing of chemical products with higher added value is a better way out,†said Yang Wenxuan.
Hu Haifeng, deputy director of the Shaanxi Provincial Petroleum and Chemical Industry Management Office, expressed the same view: “The coke oven gas power generation technology is mature, but it also faces unfavorable factors such as unstable raw material sources and difficulties in power generation and access to the Internet. Although coke oven gas production costs less, However, the production capacity of methanol in China is already overcapacity and the development prospects are not optimistic. Therefore, the current best way to use coke oven gas is to produce clean fuel oil.â€
Hu Haifeng said that coke oven gas production of fuel oil technology, Shaanxi Golden Nest Investment Co., Ltd. developed hydrocarbon-based synthesis gas production of clean fuel oil technology. This technology integrates China's gas purification and South African Fischer-Tropsch synthesis technology and uses hydrocarbon-based synthesis gas such as coke oven gas as raw materials to produce clean fuel oil, high-purity paraffin and other chemical products, and 10,000 m3 of gas can produce 0.6 tons. 0 # diesel and 0.9 tons of high-purity paraffin, with independent intellectual property rights. According to the person in charge of Shaanxi Golden Nest Investment Co., Ltd., the 10,000-ton industrialized installation test for hydrocarbon-based syngas production of clean fuel oil technology was successfully completed in Shaanxi Baoji and is currently actively promoting industrialization in the country. It will soon be located in Tangshan, Hebei, and Zaozhuang, Shandong. Two coking companies build large-scale production facilities. It is estimated that the coke oven gas produced annually with 1 million tons of coke can be used to produce 50,000 tons of clean fuel oil (including 20,000 tons of diesel oil and 30,000 tons of paraffin), and the annual new sales revenue will be nearly 500 million yuan.
Coke oven gas production of synthetic natural gas technology is also receiving much attention. At the 7th China Coking Technology and Coke Market International Conference held in Xi'an last month, the research and development of coke oven gas to synthesize natural gas (SNG) technology by the Southwest Research Institute of Chemical Industry and Design attracted great attention from the industry. Zhang Xinbo, technical director of Southwest Research Institute of Chemical Industry and Design, said that SNG technology is a new area of ​​coke oven gas utilization. Synthetic natural gas can be transported to users through pipelines and can be further processed into compressed natural gas (CNG) or liquefied natural gas (LNG).
"Compared with the production of methanol from coke oven gas and other processes, synthetic natural gas technology has the advantages of high raw material utilization efficiency, simple process flow, low investment, and high value-added products. A coking enterprise with an annual output of 1 million tons of coke is taken as an example. In the state, the surplus coke oven gas volume is about 230,000 m3/h, and the technology can be used to synthesize natural gas 10031m3/h. The equipment investment is 130 million yuan, and the coke oven gas price is 0.3 yuan/m3, and the synthetic natural gas production cost is about 0.87 yuan/year. M3, good economic benefits. Zhang Xinbo said. At present, they are conducting more extensive industrialization trials.
It is understood that China's exploration of efficient use of coke oven gas new technology is maturing. Institute of Physics and Chemistry, Chinese Academy of Sciences and Taiyuan Engineering Tiancheng Science and Technology Co., Ltd. implemented a new technology demonstration project for the comprehensive utilization of 120 million cubic meters of coke oven gas, using low temperature liquefaction separation technology to produce liquid methane and liquid hydrogen. This domestic first technology is being promoted; Taiyuan Iron and Steel Group The hydrogen sulfide gas in the coke oven gas is extracted and then concentrated sulfuric acid with a concentration of 98% is used as a raw material to produce ammonium sulfate. The coke oven gas is treated 13m3 per hour. The annual reduction in sulfur dioxide emissions is 12,238 tons and the production of 98% concentrated sulfuric acid is 18,800. Ton.
“Oxygen from coke oven gas is used to produce olefins and further deep processing of aromatics from the by-product tar to produce high-value-added chemical products.†Gu Zongqin, president of the China Petroleum and Chemical Planning Institute, was also held recently. The Coal Chemical Technology Forum stated this way.
Our firm introduced whole set of good-sized numerical control hydraulic folding equipment(1280/16000) as well as equipped with a series of good-sized professional equipments of armor plate-flatted machine, lengthways cut machine, numerical control cut machine, auto-closed up machine, auto-arc-weld machine, hydraulic redressing straight machine, etc. The firm produces all sorts of conical, pyramidal, cylindrical steel poles with production range of dia 50mm-2250mm, thickness 1mm-25mm, once taking shape 16000mm long, and large-scale steel components. The firm also is equipped with a multicolor-spayed pipelining. At the meantime, for better service to the clients, our firm founded a branch com. The Yixing Jinlei Lighting Installation Com, which offers clients a succession of service from design to manufacture and fixing.
We have supplied 2400ton 132kV and 220kV transmission line steel pole to WAPDA. Pakistan on 2008 and have supplied 1200ton 138kV transmission line steel pole to Davao light, Philippines on 2009.
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Jiangsu Xinjinlei Steel Industry Co., Ltd. , https://www.steelpolejl.com