China-Japan cooperation coke oven combustion control project completed
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At the ACCS project promotion meeting, Lu Wenbin, Director of the Energy Conservation and Emissions Reduction Division of the Central Development and Reform Commission of the National Development and Reform Commission, said: “The domestic coking industry has great potential in the field of energy conservation. We hope Shanxi Coking Industry can take ACCS project promotion as an opportunity to bring Industry and national energy conservation follow-up."
Sino-Japanese cooperation pushes for energy-saving demonstration projects On October 13th, the ACCS project promotion meeting held in the coking industry in Shanxi Province attracted more than 100 companies and proposed the next-step promotion plan for the project.
Lu Wenbin said in his speech that at present, the situation of energy conservation and emission reduction is still quite severe. Japan has advanced technologies in the field of energy conservation and environmental protection. China has a vast market for energy conservation and environmental protection, and there is great potential for cooperation between the two countries. NEDO of Japan has cooperated with the National Development and Reform Commission for many years and established a good cooperation mechanism for energy conservation and environmental protection. It should further strengthen cooperation in the field of energy conservation and environmental protection.
Lu Wenbin said that advancing energy conservation and emission reduction, technological progress is fundamental, not only to speed up the establishment of energy-saving emission reduction technology support system, to overcome common and key technologies, establish energy-saving emission reduction technology selection, assessment and promotion mechanisms, and promote advanced and practical technologies; The introduction of digestion and absorption of foreign advanced technology including Japan, relying on key projects to promote industrialization demonstration and promotion applications, to form a solid engineering and technical capabilities. The promotion of energy-saving and environmental protection cooperation demonstration projects will accelerate the use of Japan’s advanced energy conservation and environmental protection technologies in China.
Lu Wenbin stressed that coke is an important pillar industry in Shanxi Province, but the problem of extensive development of the coking industry is still relatively prominent, and there is still great potential for reducing energy consumption in the coking process, comprehensive utilization of gas tar, and improving the level of automation. We hope to use this technology promotion as an opportunity to promote the promotion and application of energy-saving technologies in coking and other industries, and make new contributions to the transformation and development of Shanxi Province and the completion of the province's “Twelfth Five-Year†energy-saving and emission reduction targets.
At this promotion meeting, Hu Ronghua, chief engineer of the Shanxi Provincial Economic and Information Commission, first mentioned that the coking industry is a pillar industry in Shanxi Province. The energy consumption of the coking industry in Shanxi Province is quite different, and there is still a large energy-saving potential that can be tapped. Energetically implementing key energy conservation projects and striving to improve the energy efficiency level of the coking industry are significant for Shanxi Province to achieve the “12th Five Year Plan†energy saving and emission reduction targets.
"We learned that China will achieve a higher energy-saving and emission-reduction target during the 12th Five-Year Plan period and will need a higher energy-saving and emission-reduction level," said Yukio Ueda, director of Japan's independent administrative agency and the New Energy and Industrial Technology Comprehensive Development Organization. We hope that this project will help China achieve this goal. In the future, the Japanese new energy development organization will continue to cooperate with the National Development and Reform Commission, the Shanxi Economic and Information Commission and other relevant departments in the field of new energy."
Finally, Xue Zhongjin, Director of the Energy Conservation Department of Shanxi Economic and Information Commission, summarized the promotion meeting and made arrangements for the further promotion of energy conservation, emission reduction and coking industry energy conservation projects in Shanxi Province.
Automation Technology Enables Coking Industry to Meet Inflection Point with High Energy Consumption On October 13, the ACCS project for the coke oven of Shanxi Sunshine Group was officially announced. Director of Japan's new energy industry and technology development organization, Yukio Ueda, said that the project is a major achievement of Sino-Japanese cooperation, and its good energy-saving and emission reduction effects have been tested and verified.
The ACCS project built by Sunshine Coking Group has obvious energy-saving effect: 5% of coke oven gas can be saved annually. According to the calculation of the current revenue from the coking sun, the recycled gas is saved by about 3000m3 per hour, and the annual coke-oven gas saving is 26.28 million m3, which can save more than 10 million yuan in the whole year. In addition, the oxygen content of the flue gas from the flue gas was reduced from the original 10% to 7.5%. This is considered to be a milestone in the field of energy-saving and emission reduction of domestic coke ovens.
A major function of the ACCS control system is to determine the moment of fire based on the raw gas temperature. The ACCS system judges the fire fall time through the change of the riser gas temperature, which reflects the maturity of the coke. The control of the fire fall time also ensures the coke placement time and makes the coke more mature.
At the same time, ACCS control system can automatically calculate and track the target temperature according to the change of coking time. According to the change of the coking time, the target temperature is calculated automatically, and then the target temperature is adjusted according to the particles, moisture, and weight of the coal entering the furnace. The system adjusts the amount of heating gas according to the calculated target temperature.
Compared with traditional coke ovens, the ACCS control system has significantly improved its automation level. The traditional coke oven adopts nine-temperature and five-pressure management, determines whether the standard temperature is reasonable by measuring the temperature of the center of the coke cake, uses the intermittent measurement standard fire temperature to judge the coke ripening time, and the ACCS control system determines the target temperature through the fire falling time. .
The improvement of coke quality is also a major advantage of the ACCS control system. According to the analysis results of coke assay, the difference in the placement time is more than 1 hour, and the strength of coke also changes significantly. The ACCS system automatically tracks the target temperature, which can reduce the coke quality fluctuations and evenly mature the coke cake, thereby improving the quality of coke.
In addition, the system can appropriately reduce the labor intensity of workers, and the higher requirements for the operating rate and production stability also promote the improvement of the management level of the enterprise.
"One-and-a-half-year recoverable cost" companies showed great interest During the visit to Sunshine Group's ACCS control system, several companies began to inquire about the operational effectiveness and construction costs of the project, and actively discussed the feasibility of introducing the project. Most of these companies are from the coking industry in Shanxi Province.
It is understood that there are more than 220 coke enterprises in Shanxi Province with an annual production capacity of approximately 159 million tons. Last year, Shanxi Province completed a total coke production of 84.763 million tons, accounting for 23% of the country's coke production. Commodity coke accounted for more than 70% of the international market transactions. In recent years, the coking industry in Shanxi Province is also facing new situations such as the elimination of backward production capacity and merger and integration.
The coking industry in Shanxi Province has continued to increase energy conservation and emission reduction. In February of this year, the "Twelfth Five-Year Plan for Promoting Industrial Cleaner Production in Shanxi Province" issued by the Resource Conservation and Comprehensive Utilization Department of the Shanxi Provincial Economic and Trade Commission clearly stated that the coking industry will become the clean audit of Shanxi Province during the "12th Five-Year Plan" period. Focus.
As for the promotion prospect of ACCS energy-saving control system in Shanxi Province, Mr. Numata, the head of the Japan Mitsubishi Chemical Engineering Co., Ltd., an ACCS project partner, stated that he is optimistic about the promotion of the project in a wider scope. "There are so many companies participating in today's promotion that they are very interested in the ACCS project."
Japan is full of confidence in the advancement of this project. An important reason is that the project can quickly generate energy-saving benefits. Director of Japan's New Energy and Industrial Technology Development Agency, Yukio Shigeo, said at the promotion meeting that according to the calculation of the yield of ACCS project completed by Sunshine Group, “The project’s investment can be recovered within 5 yearsâ€. According to a person in charge in Shanxi Province, if the equipment is to be manufactured locally, it is expected that the initial investment can be recovered in one and a half years and the effect is significant.
Mr. Numata, the head of Japan’s Mitsubishi Chemical Engineering Co., Ltd., also told this reporter that “we are already working out the promotion plan for this project in Shanxi Province. If the promotion is feasible in Shanxi Province, we will gradually promote it to more places in China and other industries. This item."
The completion of the ACCS project of Shanxi Sun Coking Group provided a model for the introduction of this project by other companies in Shanxi Coking Industry. The completed project has added ACCS automatic control technology to Sun Coking's 1 million tons and 1.4 million tons of coke ovens. The main contents of the project include the signal main body storage device, control software, operating software, data communication server and other devices.
For the introduction of the ACCS system, the business community is most concerned about the cost. A number of entrepreneurs participating in the promotion meeting stated that at present, the cost of introducing ACCS systems to coke ovens of different sizes is not yet clear. “Now the national energy-saving emission reduction efforts are gradually increasing, and if the cost is right, they will consider introducing the system. â€
Yan Meijing, chief engineer of Shanxi Longhui Coal Gasification Co., Ltd., told this reporter that he was also very concerned about the introduction of energy conservation subsidies for the project at the national policy level. "If the subsidies at the policy level are large, the enthusiasm of the enterprises will undoubtedly be much greater."