Method for recovering sodium trichloropyrindinol from sodium trichloropyrindinol production waste
A technology of sodium trichloropyridine and the sodium trichloropyridine, applied in directions such as organic chemistry, can solve problems such as time-consuming alkaline hydrolysis, a lot of catalyst consumption, long time, etc., and achieve the effect of cost saving
Active Publication Date: 2017-01-04
CHONGQING HUAGE BIOCHEM
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Abstract
The invention provides a method for recovering sodium trichloropyrindinol from sodium trichloropyrindinol production waste and belongs to the field of chemical engineering. The method comprises the steps that the sodium trichloropyrindinol production waste and a first alkali liquor are mixed to perform first-time alkaline hydrolysis reaction, and an alkaline-hydrolysis coarse material is obtained; the alkaline-hydrolysis coarse material is mixed with a second alkali liquor to perform second-time alkaline hydrolysis reaction, wherein the second-time alkaline hydrolysis reaction is performed under the pressure of 0.1-0.6 MPa and the temperature of 100-160 DEG C. By the adoption of the method, the sodium trichloropyrindinol can be recovered in a high-yield and high-purity mode. The method is simple in operation, the device requirements are not high, the production cost is low, and the method can be adopted in a large-scale mode. The wastewater obtained after treatment conducted by adopting the method can be directly discharaged into a biochemical pool, the trouble of further treatment is omitted, and the wastewater treatment cost is saved.
Application Domain
Organic chemistry
Technology Topic
ScrapChemistry +5
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