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排序方式: 共有3749条查询结果,搜索用时 31 毫秒
861.
862.
863.
Industrial symbiosis, a subfield of industrial ecology, focuses on transforming the waste of one firm into the valuable input of another, which improves the competitive advantages of supply chain by reducing production cost and improving environmental performance. Considering the specific situation where there are so many state-owned big company groups in China, this paper utilizes the ideas of constructing an industrial symbiosis among different firms, and does a case study on applying the concept into the inner relationships' reconstruction among different production systems in a big state-owned smeltery in South-west China. Three kinds of approaches are explored: 1) recycling and reusing the release; 2) concentrating and abstracting metals from the residues; 3) extending the product chain for value-added products. The results show that it can effectively improve the competitive advantage of the enterprise in terms of decreasing production cost and improving environmental performance. 相似文献
864.
针对提钒炼钢厂建设于20世纪70年代初的1号—3号转炉实施煤气回收的可能性进行了论证,对影响煤气回收的问题提出了相应的完善措施,在此基础上成功实施了1号—3号转炉煤气回收改造,改进后年回收转炉煤气达2 127 138GJ以上,可发电59 124 kW.h,减少CO2排放量近20万t,对降低生产能耗及减少温室气体排放起到了较好作用。 相似文献
865.
为了研究谷物粉尘燃烧特性影响因素,以可食用玉米淀粉为研究对象,通过ZY6243锥形量热仪(CONE)进行了单因素和正交试验,研究了粉尘粒径、惰性介质CaCO3质量分数、热辐射通量对玉米淀粉燃烧特性的影响效应。应用直观分析法和方差分析法定性地研究了各因素对玉米淀粉热释放速率峰值的影响程度并进行了排序,2种方法得出的结论基本一致。研究结果表明:各因素对玉米淀粉热释放速率峰值的影响程度依次为:CaCO3质量分数>粉尘粒径>热辐射通量;其中惰性介质CaCO3对热释放速率峰值和引燃时间的影响最为显著。 相似文献
866.
Yang Shaomei Yuan Aijia Yu Zhengqin 《Environmental science and pollution research international》2023,30(5):11689-11705
Environmental Science and Pollution Research - The randomness and instability of wind power bring challenges to power grid dispatching. Accurate prediction of wind power is significant to ensure... 相似文献
867.
G. Yuan D. Chen L. Yin Z. Wang L. Zhao J.Y. Wang 《Waste management (New York, N.Y.)》2014,34(6):1045-1050
In this research a gas–liquid fluidized bed reactor was developed for removing chlorine (Cl) from polyvinyl chloride (PVC) to favor its pyrolysis treatment. In order to efficiently remove Cl within a limited time before extensive generation of hydrocarbon products, the gas–liquid fluidized bed reactor was running at 280–320 °C, where hot N2 was used as fluidizing gas to fluidize the molten polymer, letting the molten polymer contact well with N2 to release Cl in form of HCl. Experimental results showed that dechlorination efficiency is mainly temperature dependent and 300 °C is a proper reaction temperature for efficient dechlorination within a limited time duration and for prevention of extensive pyrolysis; under this temperature 99.5% of Cl removal efficiency can be obtained within reaction time around 1 min after melting is completed as the flow rate of N2 gas was set around 0.47–0.85 Nm3 kg?1 for the molten PVC. Larger N2 flow rate and additives in PVC would enhance HCl release but did not change the final dechlorination efficiency; and excessive N2 flow rate should be avoided for prevention of polymer entrainment. HCl is emitted from PVC granules or scraps at the mean time they started to melt and the melting stage should be taken into consideration when design the gas–liquid fluidized bed reactor for dechlorination. 相似文献
868.
Ye Siqi Zhang Dengpan Chen Bo Xu Jieping Jia Changkai Mei Deqing Yuan Yinnan 《Environmental science and pollution research international》2023,30(9):22458-22470
Environmental Science and Pollution Research - Biodiesel combustion particulate matter (PM) is different from diesel combustion PM in terms of microscopic morphology, which directly affects the... 相似文献
869.
Pu Junbing Li Jianhong Zhang Tao Xiong Xiaofeng Yuan Daoxian 《Environmental science and pollution research international》2019,26(25):25733-25748
Environmental Science and Pollution Research - Accurate quantification of the emission of CO2 from streams and rivers is one of the primary challenges in determining the global carbon budget... 相似文献
870.
Yuan Chengyu Li Fayong Yuan Ziqiang Li Guoyu Liang Xinqiang 《Environmental science and pollution research international》2021,28(13):15806-15818
Environmental Science and Pollution Research - Anthropogenic activities, such as mining, influence soil bacterial community composition and microbial distributions. In the current study, the... 相似文献