China’s foreign trade continued to maintain its development momentum last year througn vigorous promotion of two fundamental changes,spurred by the smooth return of Hong Kong and propelled by the spirit of the 15th C...China’s foreign trade continued to maintain its development momentum last year througn vigorous promotion of two fundamental changes,spurred by the smooth return of Hong Kong and propelled by the spirit of the 15th Congress of the Communist Party of China. Imports and exports developed steadily。展开更多
Elevated-temperature pressure swing adsorption is a promising technique for producing high purity hydrogen and controlling greenhouse gas emissions. Thermodynamic analysis indicated that the CO in H-rich gas could be ...Elevated-temperature pressure swing adsorption is a promising technique for producing high purity hydrogen and controlling greenhouse gas emissions. Thermodynamic analysis indicated that the CO in H-rich gas could be controlled to trace levels of below 10 ppm by in situ reduction of the COconcentration to less than 100 ppm via the aforementioned process. The COadsorption capacity of potassiumpromoted hydrotalcite at elevated temperatures under different adsorption（mole fraction, working pressure） and desorption（flow rate, desorption time, steam effects） conditions was systematically investigated using a fixed bed reactor. It was found that the COresidual concentration before the breakthrough of COmainly depended on the total amount of purge gas and the COmole fraction in the inlet syngas.The residual COconcentration and uptake achieved for the inlet gas comprising CO（9.7 mL/min） and He（277.6 mL/min） at a working pressure of 3 MPa after 1 h of Ar purging at 300 mL/min were 12.3 ppm and0.341 mmol/g, respectively. Steam purge could greatly improve the cyclic adsorption working capacity, but had no obvious benefit for the recovery of the residual COconcentration compared to purging with an inert gas. The residual COconcentration obtained with the adsorbent could be reduced to 3.2 ppm after 12 h of temperature swing at 450 °C. A new concept based on an adsorption/desorption process, comprising adsorption, steam rinse, depressurization, steam purge, pressurization, and high-temperature steam purge, was proposed for reducing the steam consumption during CO/COpurification.展开更多
Q:You have visited China for many times,and you wrote a book entitled A Beautiful Journey along the Silk Road,introducing China’s history and culture as well as current economic and social development.As an expert of...Q:You have visited China for many times,and you wrote a book entitled A Beautiful Journey along the Silk Road,introducing China’s history and culture as well as current economic and social development.As an expert of China,you know that China is making enthusiastic efforts in promoting the'Belt and Road',so as to seek deepened economic cooperation with countries along the it.How do you see the prospect of the'Belt and Road'展开更多
文摘China’s foreign trade continued to maintain its development momentum last year througn vigorous promotion of two fundamental changes,spurred by the smooth return of Hong Kong and propelled by the spirit of the 15th Congress of the Communist Party of China. Imports and exports developed steadily。
基金financed by Shanxi Province Science and Technology Major Projects of MH2015-06
文摘Elevated-temperature pressure swing adsorption is a promising technique for producing high purity hydrogen and controlling greenhouse gas emissions. Thermodynamic analysis indicated that the CO in H-rich gas could be controlled to trace levels of below 10 ppm by in situ reduction of the COconcentration to less than 100 ppm via the aforementioned process. The COadsorption capacity of potassiumpromoted hydrotalcite at elevated temperatures under different adsorption（mole fraction, working pressure） and desorption（flow rate, desorption time, steam effects） conditions was systematically investigated using a fixed bed reactor. It was found that the COresidual concentration before the breakthrough of COmainly depended on the total amount of purge gas and the COmole fraction in the inlet syngas.The residual COconcentration and uptake achieved for the inlet gas comprising CO（9.7 mL/min） and He（277.6 mL/min） at a working pressure of 3 MPa after 1 h of Ar purging at 300 mL/min were 12.3 ppm and0.341 mmol/g, respectively. Steam purge could greatly improve the cyclic adsorption working capacity, but had no obvious benefit for the recovery of the residual COconcentration compared to purging with an inert gas. The residual COconcentration obtained with the adsorbent could be reduced to 3.2 ppm after 12 h of temperature swing at 450 °C. A new concept based on an adsorption/desorption process, comprising adsorption, steam rinse, depressurization, steam purge, pressurization, and high-temperature steam purge, was proposed for reducing the steam consumption during CO/COpurification.
文摘Q:You have visited China for many times,and you wrote a book entitled A Beautiful Journey along the Silk Road,introducing China’s history and culture as well as current economic and social development.As an expert of China,you know that China is making enthusiastic efforts in promoting the'Belt and Road',so as to seek deepened economic cooperation with countries along the it.How do you see the prospect of the'Belt and Road'
