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Rectification apparatus for high-salinity material

A material and rectification technology, applied in the field of rectification, can solve the problems of unqualified organic products at the top of the tower, low rectification efficiency, and difficult cleaning of the tray, so as to ensure the efficiency of the tray, reduce environmental pollution, and improve production efficiency. Effect

Inactive Publication Date: 2017-04-19
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a rectification and tower washing device for high-salt components, so as to solve the problem of unqualified organic products at the top of the tower, low rectification efficiency, and difficult cleaning of trays after the rectification device is put into use in the prior art. series of questions

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  • Rectification apparatus for high-salinity material
  • Rectification apparatus for high-salinity material

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specific Embodiment

[0030] Specific embodiment: Using this design tower, methanol is rectified for the raw material of methanol wastewater containing lithium chloride, and the mass percentages of raw material methanol, water, and lithium chloride are respectively 60%-85%, 8-15%, 5~ 10%, spray washing is set at the second plate above the feed plate, the tower height is 16m, the tower diameter is 1.6m, the number of plates is 12, the methanol mass percentage after rectification reaches 98%, and the methanol product reaches the industrial standard , A lithium chloride aqueous solution containing a trace amount of methanol at the bottom of the tower (methanol content is less than 2%), to achieve methanol purification and bottom liquid for subsequent lithium salt production.

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Abstract

The invention relates to a rectification apparatus for a high-salinity material. The rectification apparatus comprises a rectifying tower and tower washing device, wherein the tower washing device is communicated with the lower part of the stripping section of the rectifying tower; and the rectifying tower is a plate tower, and the tower washing device is communicated with space above any tower plate located above a raw material feeding position of the rectifying tower and a fourth tower plate of the rectifying tower. The rectifying tower is designed in full consideration of influence of high salinity on volatility of organic matters; the tower washing device is additionally arranged at the upper part of the feed inlet of the rectifying tower, so salt precipitated on tower plates is prevented from influencing production process; so rectification of organic matters (such as methanol, ethanol, acetone, n-propanol and isopropanol) from high-salinity components is allowed to be stable in efficiency and reach standards.

Description

Technical field [0001] The invention relates to the technical field of rectification, in particular to a high-salt organic solvent rectification device. Background technique [0002] The high-salt organic solvent rectification device is a device that uses high-salt industrial wastewater as a raw material to produce products that meet industrial organic solvents (industrial methanol standards, industrial ethanol standards, etc.). At the same time, the effect of reducing waste water discharge and environmental pollution can be achieved. [0003] High-salt organic wastewater mainly comes from the chemical industry, road deicing and food processing. Other non-negligible sources include printing and dyeing wastewater, saponin wastewater, petroleum mining wastewater, papermaking wastewater and wastewater discharged from the pesticide industry. After certain pretreatment, the organic matter (methanol, ethanol, etc.) in some high-salt organic wastewater can be rectified to obtain organic ...

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Application Information

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IPC IPC(8): B01D3/32C07C29/80C07C31/04
CPCB01D3/32C07C29/80C07C31/04
Inventor 邓天龙曹丽娜余晓平李乾华吕天生胡洪铭郭亚飞王士强李珑
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY