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Supergravity device for reduced pressure distillation and application method

A technology of vacuum distillation and supergravity, which is applied in the separation and purification of high-viscosity heat-sensitive materials, high-gravity devices, and separation of heat-sensitive materials. The effect of high quality, high efficiency and large operating flexibility

Active Publication Date: 2015-07-22
浙江中巨海锐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing atmospheric pressure high-gravity rectification machine cannot be used for vacuum rectification, cannot operate under high vacuum and has the disadvantages of large pressure drop.

Method used

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  • Supergravity device for reduced pressure distillation and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: the vacuum distillation separation of ethanol and Virahol

[0046] Using foamed silicon carbide corrugated structured packing with an inner diameter of 100mm, an outer diameter of 300mm, and a height of 40mm, add 60L of ethanol-isopropanol solution with a viscosity of 0.2PaS and a molar ratio of 1:2 to the raw material tank 8, first turn on the vacuum pump 12, and vacuumize The temperature is 700mmHg (93000Pa); open the multi-stage high-gravity rectification machine 4, and gradually adjust the rotating speed to 300rpm; powered by the second pressure pump 7, measured by the second rotameter 6, and about 30L in the raw material tank 8 The ethanol-isopropanol solution is injected into the reboiler 5 through the multi-stage high-gravity rectification machine 4, and the second pressure pump 7 is closed; Heating is carried out to make it boil; the ethanol-isopropanol mixed steam after boiling is condensed by condenser 3 and enters condensation tank 11, after the...

Embodiment 2

[0047] Embodiment 2: the continuous vacuum distillation separation of heat-sensitive materials octanoic acid, capric acid and dodecanoic acid

[0048] Use nickel foam structured packing with an inner diameter of 150 mm, an outer diameter of 350 mm, and a height of 50 mm to add 50 L of octanoic acid, 0.46 capric acid and 0.01 dodecanoic acid solution with a viscosity of 2 PaS and a molar ratio of 0.53 to the raw material tank 8, and first turn on the vacuum pump 12 , the vacuum degree in the pumping tower is 18.75mmHg (2500Pa); Open the multi-stage ultra-gravity rectification machine 4, and gradually adjust the rotating speed to 1000rpm; Power is provided by the second pressure pump 7, and the second rotameter 6 measures, and the raw material The three-component mixed solution of about 25L in the tank 8 is poured into the reboiler 5, and the second pressure pump 7 is turned off; high-temperature steam is passed into the heat exchange tube of the reboiler 5 to heat the material i...

Embodiment 3

[0049] Embodiment 3: the vacuum distillation separation of thermosensitive material sterol, peach aldehyde

[0050] Use the foam silicon carbide corrugated structured packing with an inner diameter of 20mm, an outer diameter of 100mm, and a height of 20mm to add 60L of a sterol-peach aldehyde solution with a viscosity of 200PaS and a molar ratio of 1:2 into the raw material tank 8, and first turn on the vacuum pump 12, and the vacuum degree is 700mmHg (93000Pa); open the multi-stage high-gravity rectifier 4, and gradually adjust the rotating speed to 300rpm; powered by the second pressure pump 7, the second rotameter 6 measures, and the sterol of about 30L in the raw material tank 8- The peach aldehyde solution is injected into the reboiler 5 through the multi-stage high-gravity rectification machine 4, and the second pressure pump 7 is closed; high-temperature water vapor is passed into the heat exchange tube of the reboiler 5 to heat the material in the reboiler 5, Make it b...

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Abstract

The invention discloses a supergravity device for reduced pressure distillation. The supergravity device comprises a multistage supergravity distillation machine, a vacuum pumping system, a condenser, a raw material tank, a condensing tank and a reboiler, wherein a gas phase outlet of the multistage supergravity distillation machine is connected with an inlet of the condenser through a pipeline, the condenser is connected with the vacuum pumping system through a pipeline, an outlet of the condenser is connected and communicated with an inlet of the condensing tank through a pipeline, an outlet of the condensing tank is connected and communicated with the multistage supergravity distillation machine through a first pressure pump, a residue outlet of the multistage supergravity distillation machine is connected and communicated with a feed liquid inlet of the reboiler through a pipeline, and a gas phase outlet of the reboiler is connected and communicated with a gas phase inlet of the multistage supergravity distillation machine through a pipeline. The invention also discloses an application method. The supergravity device disclosed by the invention is small in size, can be used for reducing the equipment investment cost and energy consumption, ensures short material residence time, is high in operation elasticity, has higher mass transfer efficiency, and can be used for significantly reducing the possibility of oxidation, polymerization and coking in distillation so as to ensure higher quality of products of hyper-viscous heat-sensitive materials and the like.

Description

technical field [0001] The invention relates to a high-gravity device and an application method thereof, in particular to a high-gravity device for vacuum rectification and its application method in the process of separating heat-sensitive materials. The supergravity device of the present invention is especially suitable for processes such as separation and purification of high-viscosity heat-sensitive materials, and belongs to the field of supergravity technology. Background technique [0002] Heat-sensitive materials often exist in many fields such as traditional Chinese medicine, biotechnology, fine chemicals and food industries. Heat-sensitive materials will undergo decomposition, polymerization or other reactions when heated to a certain extent, resulting in discoloration and odor. The main factors affecting heat-sensitive materials are temperature and heating residence time. In the industry, decompression or vacuum distillation is often used to deal with heat-sensiti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/30C07C29/80C07C31/08C07C31/10C07C51/44C07C53/126C07J75/00C07D307/33C07C47/575C07C45/82C07C47/19C07C67/54C07C69/15
Inventor 罗勇桑乐初广文陈建峰赵宏邹海魁
Owner 浙江中巨海锐科技有限公司
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