Method for multi-stage reboiling concentration of organic waste liquid

By setting up a multi-stage reboiling concentration system in a distillation column and utilizing the combination of a storage tank and a reboiler, the efficient concentration of organic waste liquid is achieved, solving the problems of large equipment footprint and high investment cost, and realizing the production of high-concentration waste liquid.

CN120229838BActive Publication Date: 2026-08-04SUZHOU JULIAN ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Application Number
CN202510361503.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-26
Publication Date
2026-08-04
Estimated Expiration
2044-11-26

AI Technical Summary

Technical Problem

Existing organic waste liquid treatment technologies require large equipment footprints, have high investment costs, and are difficult to effectively concentrate recyclable substances in low-concentration waste liquids.

Method used

A multi-stage reboiling concentration system is adopted, including a distillation unit, a steam condensate storage unit, and n reboiler units connected in series. The organic waste liquid is concentrated step by step. The n-stage storage tank and reboiler unit are set up in a distillation column. The concentration of waste liquid is increased step by step by utilizing the cooperation between the storage tank and the reboiler.

Benefits of technology

While reducing the number of equipment and floor space, the concentration of waste liquid was increased, gradually concentrating it from a low concentration of 10% to 25% to a high concentration of 70% to 80%, effectively reducing input costs.

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Abstract

The application discloses a method for multistage reboiling concentration of organic waste liquid. The method comprises the following steps: feeding low-concentration organic waste liquid into a first-stage storage pool and concentrating the low-concentration organic waste liquid by a first-stage reboiler unit and an n-stage reboiler unit in sequence, and discharging high-concentration waste liquid from an n-stage storage pool; the concentration of the low-concentration organic waste liquid fed into the first-stage storage pool is 10% to 25%, and the concentration of the high-concentration waste liquid discharged from the n-stage storage pool is 70% to 80%. The method can ensure the concentration of the concentrated product, reduce the number of equipment and effectively reduce the cost.
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