Consumer type and consumption need are analyzed in this paper. It is recognized that sustainable consumption accords with human＇s pursuing of well-being. Further, we analyze three types of realization models of susta...Consumer type and consumption need are analyzed in this paper. It is recognized that sustainable consumption accords with human＇s pursuing of well-being. Further, we analyze three types of realization models of sustainable consumption and focus onthe feasibility, realization process and policy measures of product service system.展开更多
Last year, 1998, was an extraordinary year. In the face of financial tur-moil inter nationally and record--breaking floods domestically, we havestood severe tests. The macroeconomic control policy adopted by the cen-t...Last year, 1998, was an extraordinary year. In the face of financial tur-moil inter nationally and record--breaking floods domestically, we havestood severe tests. The macroeconomic control policy adopted by the cen-tral au thorities to expand investment in order to provide incentives to do-mestic demand yielded positive results and the economic growth ratereached 7.8percent. However the investment expansion was only the be-展开更多
A large amount of waste liquids containing methanol/acetone/water mixtures are produced in the synthesis of methyl methacrylate(MMA).Under the advocacy of green chemical industry,it is urgent to develop an efficient,e...A large amount of waste liquids containing methanol/acetone/water mixtures are produced in the synthesis of methyl methacrylate(MMA).Under the advocacy of green chemical industry,it is urgent to develop an efficient,economic and energy-saving mixture separation process.Through thermodynamic azeotropic behavior and pressure sensitivity analysis,pressure-swing distillation was determined and the optimal separation pressure of each column in the process was obtained.Due to the composition of waste liquids produced were quite different in MMA production,the pressure-swing distillation separation process was designed to fully achieve the accurate waste liquids treatment.Taking the total annual cost(TAC)as the target,the sequential iteration method was used to optimize the process,and the impact of composition on economy was compared.In order to further realize the energy-saving of the separation process,the pervaporation membrane module was introduced to pretreat the waste liquid in the pressure-swing distillation.The results showed that the TAC of the coupling process was 46% higher than that of the pressure-swing distillation process,and the thermodynamic efficiency was 30% higher.This study provides waste liquid treatment technology for enterprises and analyzes its economic and energy efficiency,which has reference significance for the development of coupled separation technology.展开更多
At first glance, the official figures of China's oil consumption in 2005 seem a bit confusing. With a robust economic growth and rising annual oil imports, China made the surprise announcement that its oil consump...At first glance, the official figures of China's oil consumption in 2005 seem a bit confusing. With a robust economic growth and rising annual oil imports, China made the surprise announcement that its oil consumption growth rate was dropping sharply, from 15.3 percent in 2004 to 2.1 percent in 2005. Earlier, China's Ministry展开更多
文摘Consumer type and consumption need are analyzed in this paper. It is recognized that sustainable consumption accords with human＇s pursuing of well-being. Further, we analyze three types of realization models of sustainable consumption and focus onthe feasibility, realization process and policy measures of product service system.
文摘Last year, 1998, was an extraordinary year. In the face of financial tur-moil inter nationally and record--breaking floods domestically, we havestood severe tests. The macroeconomic control policy adopted by the cen-tral au thorities to expand investment in order to provide incentives to do-mestic demand yielded positive results and the economic growth ratereached 7.8percent. However the investment expansion was only the be-
基金supported by the National Natural Science Foundation of China(22078166)。
文摘A large amount of waste liquids containing methanol/acetone/water mixtures are produced in the synthesis of methyl methacrylate(MMA).Under the advocacy of green chemical industry,it is urgent to develop an efficient,economic and energy-saving mixture separation process.Through thermodynamic azeotropic behavior and pressure sensitivity analysis,pressure-swing distillation was determined and the optimal separation pressure of each column in the process was obtained.Due to the composition of waste liquids produced were quite different in MMA production,the pressure-swing distillation separation process was designed to fully achieve the accurate waste liquids treatment.Taking the total annual cost(TAC)as the target,the sequential iteration method was used to optimize the process,and the impact of composition on economy was compared.In order to further realize the energy-saving of the separation process,the pervaporation membrane module was introduced to pretreat the waste liquid in the pressure-swing distillation.The results showed that the TAC of the coupling process was 46% higher than that of the pressure-swing distillation process,and the thermodynamic efficiency was 30% higher.This study provides waste liquid treatment technology for enterprises and analyzes its economic and energy efficiency,which has reference significance for the development of coupled separation technology.
文摘At first glance, the official figures of China's oil consumption in 2005 seem a bit confusing. With a robust economic growth and rising annual oil imports, China made the surprise announcement that its oil consumption growth rate was dropping sharply, from 15.3 percent in 2004 to 2.1 percent in 2005. Earlier, China's Ministry
