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Recovery and application method of inactivated non-noble metal vinyl chloride catalyst carrier

A catalyst carrier, non-precious metal technology, used in metal/metal oxide/metal hydroxide catalysts, heterogeneous catalyst chemical elements, chemical recovery, etc. Problems such as poor COD removal rate and unsatisfactory treatment effect can achieve the effect of improving COD removal rate, reducing power consumption of sewage treatment and simple operation.

Active Publication Date: 2021-03-19
李通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (2) To overcome the existing ozone catalyst, when treating sewage with a high concentration of COD, the treatment effect is not ideal under the predetermined treatment time condition, and the COD removal rate is not good. In order to achieve the ideal treatment effect, it is often only by extending the treatment time, increase energy consumption, and increase the amount of ozone to achieve, the time cost, power consumption cost, and resource cost remain high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A method for recovering and applying a deactivated non-noble metal vinyl chloride catalyst carrier, comprising: impurity removal, pretreatment, grinding, loading, core body treatment, and preparation.

[0052] The impurity removal includes: drying under reduced pressure, pickling, dipping, rinsing and drying.

[0053] In the decompression drying, the deactivated non-noble metal vinyl chloride catalyst is put into a closed container, the pressure is reduced to -0.05MPa, and the temperature is raised to 160°C for drying. The drying time is 4h, until the water content of the non-noble metal activated carbon catalyst is less than 2%.

[0054] For the pickling, put the pretreated solid matter into 1.5 times the volume of the treatment solution for pickling, raise the temperature to 40°C, pickle for 20 minutes, and keep stirring during the pickling process to ensure that the catalyst and the mixed acid treatment solution Mix well and filter off the solids after the pickling ...

Embodiment 2

[0083] A method for recovering and applying a deactivated non-noble metal vinyl chloride catalyst carrier, comprising: impurity removal, pretreatment, grinding, loading, core body treatment, and preparation.

[0084] The impurity removal includes: drying under reduced pressure, pickling, dipping, rinsing and drying.

[0085] For the decompression drying, the deactivated non-noble metal vinyl chloride catalyst is put into a closed container, the pressure is reduced to -0.07MPa, and the temperature is raised to 160°C for drying. The drying time is 4h, until the water content of the non-noble metal activated carbon catalyst is less than 2%.

[0086] For the pickling, put the pretreated solid matter into 2 times the volume of the treatment solution for pickling, raise the temperature to 45°C, pickle for 30 minutes, and stir continuously during the pickling process to ensure that the catalyst and the mixed acid treatment solution Mix well and filter off the solids after the pickli...

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PUM

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Abstract

The invention provides a recovery and application method of an inactivated non-noble metal vinyl chloride catalyst carrier, which is characterized by comprising the following steps: impurity removal,pretreatment, grinding, loading, core treatment and preparation. According to the recycling application method of the inactivated non-noble metal vinyl chloride catalyst carrier, residual organic matters and heavy metals in the catalyst are effectively removed; a large amount of resources and cost consumed by preparation and activation of the activated carbon are effectively saved, and sustainableresource reutilization is realized; the ozone catalyst prepared by the method has the advantages that the COD removal rate reaches 87.4 percent in the treatment of high-concentration COD sewage; andmeanwhile, compared with the prior art, the ozone adding amount is reduced by 23%, the water treatment cost is obviously reduced, and the enterprise burden is relieved.

Description

technical field [0001] The invention relates to the field of vinyl chloride catalysts, in particular to a recovery and application method for a deactivated non-noble metal vinyl chloride catalyst carrier. Background technique [0002] Vinyl chloride is a monomer for the synthesis of polyvinyl chloride. Polyvinyl chloride resin is an important plastic raw material and one of the five general-purpose synthetic resins. It has good physical and mechanical properties and is widely used in various fields of production and life. The production of vinyl chloride monomer is an important link in the polyvinyl chloride industry. [0003] The synthesis process of vinyl chloride is divided into two categories, namely ethylene oxychlorination and acetylene hydrochlorination, among which acetylene hydrochlorination is the main method. The catalysts of the acetylene hydrochlorination mainly include noble metal catalysts, non-noble metal catalysts and non-metal catalysts. Among them, due ...

Claims

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Application Information

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IPC IPC(8): B01J23/889B01J37/02B01J37/08B01J37/00B01J21/18B01J21/20B01J38/60B01J38/64B01J38/02B01J38/10C02F1/78
CPCB01J23/8892B01J23/002B01J37/0207B01J37/0213B01J37/088B01J37/02B01J37/0018B01J37/0063B01J37/0217B01J21/18B01J21/20B01J38/60B01J38/64B01J38/02B01J38/10C02F1/78C02F2209/08B01J2523/00B01J2523/12B01J2523/17B01J2523/47B01J2523/72B01J2523/845Y02P20/584
Inventor 李通
Owner 李通