Energy-saving rectifying system for recovering organic solvent

A rectification system and organic solvent technology, applied in the field of energy-saving rectification system, can solve the problems of high energy consumption, and achieve the effects of low energy consumption, convenient reuse, and low investment

Active Publication Date: 2018-01-19
XINZHONGTIAN ENVIRONMENTAL PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide an energy-saving rectification system for recovering organic solvents, so as to solve the problem of huge energy consumption in existing rectification systems for recovering organic solvents

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  • Energy-saving rectifying system for recovering organic solvent

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Embodiment Construction

[0019] The present invention will be described in further detail below by means of specific embodiments:

[0020] The reference numerals in the accompanying drawings of the description include: low-pressure column 1, first condenser 11, first reflux buffer tank 12, No. 1 pump 13, reboiler 14, first reboiler 15, first product tank 16, Medium pressure tower 2, second condenser 21, second reflux buffer tank 22, No. 3 pump 23, second throttle valve 24, second heat pump 25, second reboiler 26, second product tank 27, high pressure tower 3. Stripping section 31, rectifying section 32, first heat pump 311, third reboiler 312, fourth product tank 313, first throttle valve 321, No. 3 pump 322, third reflux buffer tank 323, No. Three product tanks 324.

[0021] This embodiment takes the separation and recovery of the mixture of organic solvents ether, methanol, toluene and ethylene glycol as an example.

[0022] Such as figure 1 As shown, the energy-saving rectification system for re...

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Abstract

The invention relates to the technical field of organic-solvent recovery and particularly discloses an energy-saving rectifying system for recovering an organic solvent. The energy-saving rectifying system comprises a low-pressure tower, a medium-pressure tower and a high-pressure tower, wherein the high-pressure tower comprises a stripping section and a rectifying section; tower-top steam of thelow-pressure tower exchanges heat with tower-bottom liquid of the stripping section by a first condenser; the tower-bottom liquid of the low-pressure tower exchanges heat with tower-top steam of the rectifying section by a reboiler; tower-bottom liquid of the medium-pressure tower exchanges heat with tower-top steam of the medium-pressure tower by a second condenser, a second throttling valve anda second heat pump; the stripping section and the rectifying section of the high-pressure tower realize heat exchange in the high-pressure tower by a first heat pump and a first throttling valve. Theenergy-saving rectifying system for recovering the organic solvent disclosed by the invention has the advantages of low energy consumption, good energy-saving effect and low operation cost.

Description

technical field [0001] The invention relates to the technical field of organic solvent recovery, in particular to an energy-saving rectification system for recovering organic solvents. Background technique [0002] Organic solvent is a kind of solvent with organic matter as the medium. It can directly or indirectly disperse polymer compounds such as resins, pigments or dyes, and does not react with them. It can be volatilized after molding, so it is widely used in industry. With the rapid development of my country's industrial and agricultural production, the use of organic solvents is also increasing. The daily use of organic solvents in some large factories is 3 to 4 tons; that of medium factories is 1 to 2 tons; and that of small factories is about several hundred kilograms. Different types of factories that use organic solvents, such as container factories, copper clad laminate factories, plastic printing factories, furniture factories, chemical fiber factories, etc., a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14C07B63/00C07C7/04C07C15/06C07C29/80C07C31/04C07C31/20C07C41/42C07C43/06
CPCY02P20/10
Inventor 杨贵林阳杨林辉荣胡茂丽彭汉贵郑伟
Owner XINZHONGTIAN ENVIRONMENTAL PROTECTION
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