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1. 发明专利

JP2000246001A INTERNAL HEAT EXCHANGE-TYPE DISTILLATION COLUMN 失效
公开(公告)号：JP2000246001A
公开(公告)日：2000-09-12
申请号：JP5682899
申请日：1999-03-04
申请人： KIMURA KAKOKI CO LTD , KANSAI KAGAKU KIKAI SEISAKU KK , MARUZEN PETROCHEM CO LTD
发明人： TAKAMATSU TAKEICHIRO , NAKAIWA MASARU , ASO KAZUMASA , NAKANISHI TOSHINARI , NODA HIDEO , YOSHIDA KAZUFUMI
IPC分类号： B01D3/28 , B01D3/32
摘要： PROBLEM TO BE SOLVED: To effectively use the energy of column-top steam in the concentration part and thereby enhance the energy saving effect by providing a heat exchange means which exchanges heat between the column-top steam (product steam) of the concentration part and a feedstock liquid at a boiling point temperature which is appropriate to the concentration of the liquid. SOLUTION: Heat is transferred from a concentration part 4 on the high pressure side to a recovery part 5 on the low pressure side and a feedstock liquid at a boiling point temperature appropriate to the concentration of the liquid is supplied to the column-top of the recovery part 5 after exchanging heat between the feedstock liquid and the column-top steam by a heat exchange 20. At the same time, the column-top steam is condensed using the heat exchanger 20 to be delivered to the outside as a product. In addition, the column-top steam of the recovery part 5 is supplied to the column-top side of the concentration part 4 on the high pressure side passing through a compression means 21. Further, the bottoms of the recovery part 5 is partially discharged to the outside as bottoms and the remainder is returned to the column bottom of the recovery part 5 passing through a reboiler 22. The bottoms of the concentration part 4 are supplied to the recovery part 5 through a flow rate adjusting valve 23. Thus heat retained by the column-top steam of the concentration part 4 is efficiently used.

2. 发明专利

JPH11156102A REBOILING STEAM COMPRESSION TYPE DISTILLATION METHOD AND DISTILLATOR USED THEREFOR 失效
公开(公告)号：JPH11156102A
公开(公告)日：1999-06-15
申请号：JP33798997
申请日：1997-11-21
申请人： KIMURA KAKOKI CO LTD
发明人： TAKAMATSU TAKEICHIRO , TAJIRI TADAAKI , OGAWA KAZUO
IPC分类号： B01D3/00 , B01D3/02 , B01D3/26 , B01D3/28
摘要： PROBLEM TO BE SOLVED: To obtain further higher energy-saving effect by a method wherein steam generated from a reboiler is compressed to be supplied to a distillation tower, a reboiler is heated with the steam rising in the distillation tower, and simultaneously reflux is generated in the distillation tower to execute distillation operation. SOLUTION: Mixed solution in which a raw material is introduced at a specific proportion into a tower bottom solution of a distillation tower 5 and a reboiler part 4, is supplied to an upper part in a pipe (the reboiling part) 4 from a solution inlet 8, and steam generated from an inside of the pipe (the reboiling part) 4 is pressurized with a compresser 20 to be supplied to a tower bottom of an outside of the pipe (a distillation tower part) 5 from a steam inlet for outside pipe 10. Thereby, the outside of the pipe (the distillation part) 5 is operated at a pressure higher than that of the inside of the pipe (the reboiler part) 4, the inside of the pipe (reboiling part) 4 is heated with steam rising in the outside of the pipe (distillation part) 5, and reflux is generated in the outside of the pipe (the distillation part) 5 to execute specific distillation operation. Therefore, energy required for compression is extremely reduced, and distillation can be efficiently executed.

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