Recovery device for solvents
A technology of recovery device and solvent, applied in the field of solvent recovery device, can solve the problems of insufficient utilization and reflux of heat in the device, partial production of finished products, and need for circulating water cooling, etc., and achieves the effect of saving energy, reducing investment and saving steam.
Active Publication Date: 2015-05-20
SHANDONG JINTA MASCH GRP CO LTD
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Problems solved by technology
[0002] Purify and recycle the solvent in the mixture to separate various solvents in the mixture. Therefore, the recovery device for solvent is an important light industry and chemical device. In the existing recovery device for solvent, in When the solvent is separated and purified, a single recovery tower is generally used to heat it into a gas, so as to recover a certain solvent, the bottom of the recovery tower is heated by a reboiler or directly enters the steam, and the finished product steam from the top enters the condenser to condense and partially reflux , some finished products; high energy consumption, the bottom needs steam heating, and the top steam needs circulating water cooling; the heat of the whole device cannot be fully utilized
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[0011] figure 1 As an embodiment of the present invention, this embodiment is specifically described in conjunction with the accompanying drawings, including an auxiliary reboiler 11, a recovery tower 12, a reboiler 13, a heat pump 14, a secondary feed preheater 15, and a negative pressure flash evaporation Tank 16, condensed water tank 17, tail gas condenser 18, vacuum buffer tank 19, reflux pump 20, first stage heat exchanger 21, second stage heat exchanger 22, auxiliary condenser 23, reflux tank 24, vacuum pump 25, Feed primary preheater 26, condensate pump 27, feed tertiary preheater 28 and sealed water tank 29, the heating gas port of recovery tower 12 is set to communicate with external steam pipe port through auxiliary reboiler 11, and recover The feed port of the tower 12 is set to communicate with the feed pump through the feed three-stage preheater 28, the feed secondary preheater 15 and the feed primary preheater 26 in sequence, and the upper end discharge port of t...
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The invention discloses a recovery device for solvents. The recovery device comprises a recovery device body for producing pure solvents through a recovery tower (12) and an auxiliary condenser (23), a heat exchange device taking a solvent gas conveying pipeline connected with the recovery tower (12) and the auxiliary condenser (23) as a heat exchange source, a negative pressure flash tank (16) communicated with high-temperature water output from the heat exchange device, a reboiler (13) communicated with a heating steam port of the recovery tower (12), and a heat pump (14) between the negative pressure flash tank (16) and the reboiler (13). The recovery device has the advantages that heat of pure solvent gas of finished products is recycled to obtain heating steam of the recovery tower (12), and the pure solvent gas of the finished products does not directly enter the auxiliary condenser (23) again but enters the heat exchange device to obtain heat, so that the pure solvent gas of the finished products is utilized, and energy is saved.
Description
technical field [0001] The invention relates to a recovery device, in particular to a recovery device for solvent. Background technique [0002] Purify and recycle the solvent in the mixture to separate various solvents in the mixture. Therefore, the recovery device for solvent is an important light industry and chemical device. In the existing recovery device for solvent, in When the solvent is separated and purified, a single recovery tower is generally used to heat it into a gas, so as to recover a certain solvent, the bottom of the recovery tower is heated by a reboiler or directly enters the steam, and the finished product steam from the top enters the condenser to condense and partially reflux , some finished products; high energy consumption, the bottom needs steam heating, and the top steam needs circulating water cooling; the heat of the whole device cannot be fully utilized. Contents of the invention [0003] In order to overcome the above-mentioned technical sh...
Claims
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IPC IPC(8): B01D1/14
Inventor 孟华鹿伟王坤范恒芳孟国栋马毅杨国华
Owner SHANDONG JINTA MASCH GRP CO LTD