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Contact UsA large group company integrating R&D, production and sales of mechanical and electrical equipment. -
Contact UsA large group company integrating R&D, production and sales of mechanical and electrical equipment. -
Contact UsA large group company integrating R&D, production and sales of mechanical and electrical equipment.
Coke oven equipment gas comprehensive utilization technology has a new path
Release time:
05 Sep,2024
With the increasingly prominent problem of energy shortage and the increasingly urgent requirements of energy saving and emission reduction, the application value of coke oven gas has attracted enough attention in the industry. Natural gas from coke oven gas has become a hot field in the development of coke oven gas comprehensive utilization technology because of its advantages of high conversion and utilization efficiency, less waste emission and low investment cost. Recently, news came from ENN Xinneng (Beijing) Technology Co., Ltd. that the company and ENN Technology Development Co., Ltd. have successfully developed coke oven gas synthetic natural gas pre-reduction catalysts and processes after nearly 5 years of joint research and development, and have completed the ton-scale Industrial trial production of catalysts. At present, the 1000 standard cubic meter/day coke oven gas to natural gas pilot plant constructed by this process has been running smoothly for 10000 hours.
The pre-reduction catalyst and process of coke oven gas synthesis natural gas passed the achievement appraisal organized by Hebei Science and Technology Achievement Transformation Center. According to the evaluation of the industry, the successful development of the project provides a new way for the comprehensive utilization of coke oven gas in China, which can make the conversion of CO and CO2 in the reaction gas more complete and directly enter the methane liquefaction plant, with more reasonable energy utilization and remarkable economic, environmental and social benefits.
Coke oven equipment coal-based energy utilization out of a new way
As a high-tech enterprise of ENN Group engaged in the research and development of coal-based clean energy technology, ENN Xinneng (Beijing) Technology Co., Ltd. (hereinafter referred to as Xinneng Technology) is engaged in the research of clean utilization of coal and related fields. For many years, it has adhered to the road of combining independent innovation and cooperative development, and has built a relatively complete scientific research and development system from basic research, applied research to engineering development, gradually formed a core technology with independent intellectual property rights, effectively promoting the development of coal-based clean energy technology and industrialization.
After technical investigation, Xinneng Science and Technology organized scientific researchers to establish the research direction of coke oven gas synthetic natural gas pre-reduction catalyst and its process, and joined the research and development army of coke oven gas comprehensive utilization technology in China.
Chang Junshi, general manager of Xinneng Technology, told the author why he chose this direction: as the world's coke producer, China's coke oven gas combustion emissions or direct emissions, causing serious environmental pollution and a large amount of energy waste, has become an indisputable fact. Although the production of methanol from coke oven gas and the production of urea are both important ways to achieve "coke" with "chemical", market fluctuations, national policy restrictions, and the improvement of energy utilization requirements all urgently need to develop new comprehensive utilization technologies for coke oven gas.
The main components of coke oven gas are CH4, CO, CO2 and H2, which can be used as gas, because it contains a large amount of CO and H2, the calorific value is relatively low and the impurity is more to bring a lot of inconvenience to the town transportation and use. Chang Junshi introduced that if the CO and CO2 in the coke oven gas are converted into methane, the methane content in the gas can be increased, the calorific value of the gas can be increased, and the quality of the gas can be improved to make it reach the standard of natural gas.
Natural gas is a kind of clean energy, the cost of coke oven gas synthetic natural gas is more competitive than coal natural gas, which is in line with the national energy policy, its full and rational use of industrial emissions of gas resources, reduce greenhouse gas emissions, but also for enterprises to bring huge economic benefits, so coke oven gas synthetic natural gas is a high value-added products.
After clarifying the direction, Xinneng Technology and Xinao Technology Development Co., Ltd. immediately formed a core technology research and development team, and established synthetic low-cost natural gas to achieve the technical goals of low energy consumption, high efficiency, and near zero emissions. In August 2006, the project's research and development technology program passed the review and began to conduct laboratory research.
The project of coke oven gas synthetic natural gas pre-reduction catalyst and process lasted about 5 years from 2006 to 2010. Jiang Jianming, a senior engineer of Xinneng Technology, one of the project leaders, said that the core technology research and development team is composed of 15 scientific researchers, including 8 doctors and masters, 18 designers participating in the pilot test device, and participating in the construction and daily operation of the pilot test base. 32 people. During the research and development of the project, 627 sets of test and test equipment and instruments were put into use, with a total value of 0.198 billion yuan. Large-scale instruments and equipment mainly include chemical/physical adsorption instrument, laser particle size analyzer, plasma emission spectrometer, X-ray diffraction instrument, differential thermal-thermal heavy analyzer, sulfur analyzer, ultraviolet visible light spectrophotometer, gas chromatograph and other modern large-scale analytical instruments, as well as several sets of catalyst evaluation device. For coke oven gas synthetic natural gas pilot and pilot test operation costs more than 20 million yuan.
Breakthrough in high-performance catalysts
The synthesis of methane from coke oven equipment is a relatively complex reaction system. There are two main reaction characteristics: one is that the methane synthesis reaction of CO, CO2 and H2 is a strong exothermic reaction, and the other is that the carbon evolution reaction of CO and CH4 will deactivate the catalyst. Grasping the characteristics of these two reactions, researchers quickly opened a door to achieve the technical goal of "low energy consumption, high efficiency, and near zero emissions.
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