A new feeding mode for a simulated moving bed(SMB) is proposed.The outlet stream from zone II is collected at regular intervals.The concentration of the solution is increased by dissolving raw materials and then fed t...A new feeding mode for a simulated moving bed(SMB) is proposed.The outlet stream from zone II is collected at regular intervals.The concentration of the solution is increased by dissolving raw materials and then fed to zone III as the feed stream during the next collection interval.In this feeding mode,the concentration of the stream fed to zone III is identical to that of original feed,while in a conventional SMB,the feed is diluted by mix-ing with the outlet stream of zone II before feeding to zone III.The new feeding mode increases the inlet concentra-tion of zone III.A modeling investigation shows that higher inlet concentration of zone III increases the height of concentration band in SMB,improving the separation performance significantly.In comparison with the traditonal feeding mode,the new feeding mode increases the productivity by 23.52%and decreases the solvent consumption by 22.56%,so as to increase the raffinate and extract concentrations by 53.17%and 20.38%,respectively.The col-lection interval for the outlet stream from zone II has no effect on the separation performance after reaching the steady state,so that the collection interval can be increased to make the operation more convenient.展开更多
Xi’an is situated at west China, the industrial structure the restriction function which grows to the economy is not balanced more obvious, uni？ es the Xi’an actual situation, speeds up the supplies side constituti...Xi’an is situated at west China, the industrial structure the restriction function which grows to the economy is not balanced more obvious, uni？ es the Xi’an actual situation, speeds up the supplies side constitutive property reform, the promotion industrial structure optimized promotion appears especially importantly. Firstly, this paper analyzes the present situation and development trend of supply-side reform at home and abroad. Based on the situation of Xi’an, the author analyzes ？ ve production-side reforms, such as “de-production,” “de-stocking,” “deleveraging”, “cost reduction” The author puts forward the main problems of Xi’an’s supply-side reform to promote economic growth. Finally, it puts forward the path choice of supply-side reform to promote economic growth in Xi’an. Adhere to reform and expand and demand side, supply side in xian accurate docking, supply and demand in xi ‘an supply side reform should constantly improve production quality, give full play to the market on the supply side of the reform main body role and foster the subject of the new.展开更多
基金Supported by the Natural Science Foundation of Ningbo（2009A610153）
文摘A new feeding mode for a simulated moving bed(SMB) is proposed.The outlet stream from zone II is collected at regular intervals.The concentration of the solution is increased by dissolving raw materials and then fed to zone III as the feed stream during the next collection interval.In this feeding mode,the concentration of the stream fed to zone III is identical to that of original feed,while in a conventional SMB,the feed is diluted by mix-ing with the outlet stream of zone II before feeding to zone III.The new feeding mode increases the inlet concentra-tion of zone III.A modeling investigation shows that higher inlet concentration of zone III increases the height of concentration band in SMB,improving the separation performance significantly.In comparison with the traditonal feeding mode,the new feeding mode increases the productivity by 23.52%and decreases the solvent consumption by 22.56%,so as to increase the raffinate and extract concentrations by 53.17%and 20.38%,respectively.The col-lection interval for the outlet stream from zone II has no effect on the separation performance after reaching the steady state,so that the collection interval can be increased to make the operation more convenient.
文摘Xi’an is situated at west China, the industrial structure the restriction function which grows to the economy is not balanced more obvious, uni？ es the Xi’an actual situation, speeds up the supplies side constitutive property reform, the promotion industrial structure optimized promotion appears especially importantly. Firstly, this paper analyzes the present situation and development trend of supply-side reform at home and abroad. Based on the situation of Xi’an, the author analyzes ？ ve production-side reforms, such as “de-production,” “de-stocking,” “deleveraging”, “cost reduction” The author puts forward the main problems of Xi’an’s supply-side reform to promote economic growth. Finally, it puts forward the path choice of supply-side reform to promote economic growth in Xi’an. Adhere to reform and expand and demand side, supply side in xian accurate docking, supply and demand in xi ‘an supply side reform should constantly improve production quality, give full play to the market on the supply side of the reform main body role and foster the subject of the new.
