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Green treatment process for impurity-containing tar

A technology for treating tar and tar, which is applied in the field of green treatment of tar containing impurities, to achieve the effects of reducing viscosity, easy implementation, and optimized directional impurity removal

Inactive Publication Date: 2019-11-22
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to investigations, there is no report on the green treatment process of the domestic pesticide chemical industry containing miscellaneous tar. In the present invention, the green treatment process of pesticide chemical industry containing miscellaneous tar will improve and extend the industrial chain, resulting in greater economic and environmental benefits. The social benefits are remarkable, so this process has great research significance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of catalyst: After mixing 69g of pseudo-boehmite dry glue, 20g of USY, 20g of amorphous silica-alumina (Si / Al=40) and 3.6g of turnip powder, add 100ml containing 2.5g of citric acid and 3.7g of HNO 3 (65%) mixed acid solution, mixed evenly, molded on the extruder, after drying at 60°C for 6h, drying at 120°C for 4h, heating up to 550°C for 4h in a muffle furnace with a heating rate of 5°C / min, Composite carrier A was prepared.

[0040] Weigh 9.74gNi(NO 3 ) 2 , 4.06g H 3 PO 4 (85%), 18.39g ammonium molybdate and 3.60g ammonium metatungstate to prepare 73ml of solution, then take 76.5g of carrier A and impregnate it into this solution, after the impregnation is completed, dry it in an oven at 105°C for 6h, and place it in a muffle furnace Calcined at 530°C for 4 hours to obtain catalyst A1, its active components and contents are respectively NiO: 4%; MoO 3 : 15%; WO 3 : 2%; co-active component P 2 o 5 The content is 2.5%.

Embodiment 2

[0042] Treat the tar produced in the process of producing kresoxim-methyl, and dilute it with solvent oil (waste oil produced in the process of producing indoxacarb). The ratio of solvent oil and tar is 1:9 (w / w). The chlorine content is 1800ppmw, the sulfur content is 2524ppmw, and the nitrogen content is 210ppmw.

[0043] The specific treatment process is:

[0044] 1) Catalytic hydrogenation treatment: In a 10L autoclave, the catalyst in Example 1 was used, the reaction temperature was 320°C, the reaction pressure was 3.0Mpa, the catalyst addition amount was 2wt%, the hydrogen-to-oil ratio was 160:1, and the reaction was carried out for 24 hours;

[0045] 2) Alkali washing and water washing to remove salt: the inorganic compounds of sulfur, chlorine, bromine, nitrogen and oxygen produced in step 1) are separated from the tar system; the water washing process adopts a water-to-oil ratio of 0.5:1.

[0046] Specific steps are as follows:

[0047] (1) Alkali washing process: t...

Embodiment 3

[0052] Treat the tar produced in the process of producing indoxacarb and dilute it with solvent oil (waste oil produced in the process of producing indoxacarb). The ratio of solvent oil to tar is 1:9 (w / w). The chlorine content is 3000ppmw, the sulfur content is 2736ppmw, and the nitrogen content is 240ppmw.

[0053] The specific treatment process is:

[0054] 1) Catalytic hydrogenation treatment: In a 10L autoclave, the catalyst of Example 1 was used, the reaction temperature was 280°C, the reaction pressure was 3.0Mpa, the catalyst addition amount was 4wt%, the hydrogen-oil ratio was 200:1, and the reaction was carried out for 24 hours.

[0055] 2) Alkali washing and water washing to remove salt: the inorganic compounds of sulfur, chlorine, bromine, nitrogen and oxygen produced in step 1) are separated from the tar system; the water washing process adopts a water-to-oil ratio of 0.1:1, and the specific process is the same as in Example 2.

[0056] 3) Adsorption purification...

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Abstract

The invention belongs to the field of harmless treatment of organic wastes, and particularly relates to a green treatment process for impurity-containing tar. According to the process, catalytic hydrogenation treatment is combined with alkali washing, water washing and adsorption purification processes, heteroatoms in the chemical tar are removed and changed into clean substances containing hydrocarbon elements, wherein the product can be used as a raw material of a conventional device for refining and utilization; the whole set of treatment process is environmentally friendly, and the aims ofharmlessness, recycling and valuation of the chemical tar are achieved. The process opens up a green and environment-friendly way for treating the impurity-containing chemical tar, and widens the treatment method of the hazardous waste tar.

Description

technical field [0001] The invention belongs to the field of harmless treatment of organic waste, and in particular relates to a green treatment process for tar containing impurities. Background technique [0002] The synthesis of pesticide products generally needs to go through several steps, and there are side reactions in each step of the synthesis of intermediates and products, resulting in the production of some by-product tar. The by-product tar is generally condensed aromatic hydrocarbons. Because of the presence of a large amount of heteroatoms such as chlorine, nitrogen, and sulfur, which are toxic and harmful, the traditional treatment method is to entrust a qualified hazardous waste center for treatment. The conventional treatment method is incineration. , landfill, biological treatment, etc. However, with the implementation of the new environmental protection law and the enhancement of people's awareness of environmental protection, many hazardous waste centers ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/14B01J27/19
CPCB01J27/19C10G67/14
Inventor 李新李寿丽郭振莲牟庆平孙彬
Owner CHAMBROAD CHEM IND RES INST CO LTD
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