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Process for treating and recovering methylpyridine-containing wastewater

A picoline and wastewater treatment technology, applied in water treatment parameter control, biological water/sewage treatment, heating water/sewage treatment, etc., can solve problems such as non-compliance with green chemical process requirements, difficult waste, etc., and create economic value , the effect of reducing the difficulty of processing

Inactive Publication Date: 2018-11-23
郭秦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a process for the treatment and recovery of waste water containing picoline, to solve the problem that picoline and acid proposed in the above background technology form pyridinium salts and dissolve in water, which brings difficulty and cuts to a large extent for further water treatment. Waste, problems that do not meet the requirements of green chemical technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The invention provides a technical solution: a treatment and recovery process for wastewater containing picoline, comprising the following steps:

[0023] S1, raw material selection, technician measures the waste water that contains picoline by graduated cylinder, by the caustic soda weighed by scale, the waste water volume that contains picoline that is selected by graduated cylinder is 3000L, the weight of the caustic soda that is selected by scale is 25KG;

[0024] S2, raw material mixing, first the waste water containing picoline that is selected is pumped into the reaction kettle through the water pump, then the caustic soda that is selected is added in batches, then the agitator is started to stir the raw materials in the reaction kettle, so that the caustic soda is completely Melting, the mixing temperature of the wastewater containing picoline and caustic soda is 30°C-50°C, the stirring time is 0.5-1 hour, and the pH value of the solution after stirring is about...

Embodiment 2

[0029] S1, raw material selection, technician measures the waste water that contains picoline by graduated cylinder, by the caustic soda weighed by scale, the waste water volume that contains picoline that is selected by graduated cylinder is 3000L, the weight of the caustic soda that is selected by scale is 25KG;

[0030] S2, raw material mixing, first the waste water containing picoline that is selected is pumped into the reaction kettle through the water pump, then the caustic soda that is selected is added in batches, then the agitator is started to stir the raw materials in the reaction kettle, so that the caustic soda is completely Melting, the mixing temperature of the waste water containing picoline and caustic soda is 30 degrees Celsius, the stirring time is 0.5 hour, and the pH value of the solution after stirring is about 8;

[0031] S3, stop mixing, after caustic soda melts completely, close agitator, stop stirring, leave standstill for a period of time, make solut...

Embodiment 3

[0035] S1, raw material selection, technician measures the waste water that contains picoline by graduated cylinder, by the caustic soda weighed by scale, the waste water volume that contains picoline that is selected by graduated cylinder is 3000L, the weight of the caustic soda that is selected by scale is 25KG;

[0036] S2, raw material mixing, first the waste water containing picoline that is selected is pumped into the reaction kettle through the water pump, then the caustic soda that is selected is added in batches, then the agitator is started to stir the raw materials in the reaction kettle, so that the caustic soda is completely Melting, the mixing temperature of the waste water containing picoline and caustic soda is 50 degrees Celsius, the stirring time is 1 hour, and the pH value of the solution after stirring is about 8;

[0037] S3, stop mixing, after caustic soda melts completely, close agitator, stop stirring, leave standstill for a period of time, make solutio...

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PUM

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Abstract

The invention discloses a process for treating and recovering methylpyridine-containing wastewater. The method comprises the following steps: raw material selection, raw material mixing, mixing stopping, mixing stopping, filtering water treatment and raw material recovery. The scheme realizes separation of methylpyridine and an aqueous solution, so that COD (Chemical Oxygen Demand) of the wastewater is reduced by about 95.2%, and the recovery rate of methylpyridine is 95% or more, which not only reduces the difficulty of subsequent wastewater treatment, but also recovers methylpyridine, thereby saving the energy, protecting the environment and creating the economic value.

Description

technical field [0001] The invention belongs to the technical field of treatment and recovery of picoline-containing wastewater, and in particular relates to a process for treatment and recovery of picoline-containing wastewater. Background technique [0002] As an important chemical raw material and organic intermediate, picoline is widely used in fine chemical industries such as pesticides, medicines, spices, dyes, daily chemicals, and feed additives, among which the production of niacin and nicotinamide is the main consumption of picoline field. [0003] As an excellent acid-binding agent and solvent in fine organic synthesis, picoline is widely used in organic synthesis, especially in the synthesis of amides. After the reaction is completed, picoline and acid form pyridinium salts and dissolve in In the water, it brings difficulty to further water treatment and causes a great degree of waste, which does not meet the requirements of green chemical technology. Contents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/38
CPCC02F1/04C02F1/52C02F3/00C02F9/00C02F2001/007C02F2101/38C02F2209/06C02F2209/08
Inventor 郭秦崔利飞尹占杰田勤俭
Owner 郭秦
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