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The establishment of Poyang Lake Ecological Economic Zone is an important measure for national economy sustainable development. Manufacturing chain reengineering (MCR) can transform the traditional manufacturing industry, giving enterprises the ability of new competition, to avoid being shut down because of environmental issues. This paper describes concepts and methods of MCR, and using MCR to reengineer...
Iron and steel industry is a typical energy intensive industry. On account of this, it is an important task for the iron and steel industry to obtain an obvious effect from energy conservation in the aspects of energy saving technology renovation and intensifying management. In this study, a project of coke dry quenching (CDQ) and utilization of its waste heat for electricity is used as a case to...
In cement plant, about 90% of total energy is used as heat energy in the clinker calcination process. Out of total heat consumed in the clinker calcination process, more than 35% of heat is discharged as waste heat to the surroundings without utilization. Therefore, a great deal of energy is wasted, and the heat pollution in the workplace is serious. In this study, a waste heat recovery (WHR) captive...
In iron and steel works, byproduct gases - blast furnace gas (BFG) and coke oven gas (COG) - are widely flared and vented to the atmosphere without utilization. On account of this, it is an important task for the iron and steel works to sufficiently and effectively utilize BFG and COG so as to reduce waste gases emissions and save energy. On the other hand, the power generated through combusting waste...
The online monitoring for NOx emission of coal-fired boilers in power plants is more difficult to achieve. The soft-sensor technology of artificial neural network (ANN) method that was commonly used has not strong generalization ability, but support vector machine modeling-method can solve the problem better. In this paper, a soft-sensor modeling on NOx emission of power station boilers based on least...
The wastewater from distillation process has high organic content, which has to be treated to bring down the levels of COD and BOD to prescribed standards of environmental authorities. In this study, the organic wastewater from distillery also known as spent wash is treated by closed anaerobic reactors to recover methane rich biogas and utilise the methane as fuel to generate steam and electricity...
Biomass power plants are among the renewable energy sources to which China is committed. These projects will reduce the greenhouse effect from biomass caused by natural decay and uncontrolled burning, and also will reduce greenhouse effect related to the burning of fossil fuel for power production. A case study of straw power generation project in Xiajin country, Shandong province of China is discussed...
Waste management systems are a non-negligible source of greenhouse gases. In particular, methane and carbon dioxide emissions occur due to the biomass residues dumped or left to decay under mainly aerobic conditions or burnt in an uncontrolled manner. A case study of straw cogeneration project in Laixi city, Shandong province of China is discussed in this paper. The project will collect straw and...
The clean development mechanism (CDM), one of the flexible mechanisms of the Kyoto Protocol, has received noticeable attention in China. In this paper, the project of waste gases utilization for combined cycle power plant in Handan Iron & Steel Group Co., Ltd is used as a CDM case to reveal the CO2 emission reduction and the mitigation cost per unit CO2. The analyses are conducted based on using...
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