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Mercaptan oxidative conversion catalyst for fixed bed gasoline and preparation method thereof

A mercaptan oxidation, fixed bed technology, applied in the direction of refining with oxygenated compounds, organic compounds/hydrides/coordination complex catalysts, physical/chemical process catalysts, etc., can solve problems such as increasing catalyst production costs, and overcome Short life, overcoming easy loss, low cost effect

Inactive Publication Date: 2013-04-03
一重集团大连工程建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not enough to use nitrogen-containing organic substances with unpleasant smell as solvents for preparing impregnation solutions, and the recovery and loss of solvents will also increase the production cost of catalysts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] a. Activation of the carrier: Put the coal-based columnar activated carbon in an oven to activate at 120°C for 4 hours, cool to room temperature, weigh 100g and put it in a desiccator for later use;

[0045] b. Prepare the aqueous solution of the chemical substances required for the synthesis of the active component sulfonated cobalt phthalocyanine: weigh 1.5g triammonium sulfophthalate, 3.0g urea, 1.0g ammonium chloride, 0.6g 6 hydrate cobalt chloride, 0.08g Ammonium molybdate, mix and add 93.8g deionized water, stir, make it dissolve completely, make the aqueous solution of the required chemical substance of synthetic active component sulfonated cobalt phthalocyanine;

[0046] c, saturated impregnating activated carbon carrier 100g of step 1 with the solution of step 2;

[0047] d. Drying: drying the preparation of step 3 at 90° C. for 2 hours, and then cooling to room temperature;

[0048] e. In-situ synthesis: heat the preparation in step 4 to 250° C. under nitroge...

Embodiment 2

[0052] a. Activation of the carrier: Put the coal-based columnar activated carbon in an oven to activate at 180°C for 4 hours, cool to room temperature, weigh 100g and put it in a desiccator for later use;

[0053]b. Prepare the aqueous solution of the chemical substances required for the synthesis of the active component sulfonated cobalt phthalocyanine: weigh 2.0g of triammonium 4-sulfophthalate, 4.0g of urea, 1.2g of ammonium chloride, 0.8g of cobalt chloride 6 hydrate, and 0.10g Ammonium molybdate, add 91.9g deionized water after mixing, stir, make it dissolve completely, make the aqueous solution of the required chemical substance of synthetic active component sulfonated cobalt phthalocyanine;

[0054] C, the activated carbon carrier 100g of step 1 is impregnated with the saturated solution of step 2;

[0055] d. Drying: drying the preparation of step 3 at 100° C. for 2 hours, and then cooling to room temperature;

[0056] e. In-situ synthesis: heat the preparation in st...

Embodiment 3

[0060] a. Activation of the carrier: Put the coal-based columnar activated carbon in an oven to activate at 180°C for 7 hours, cool to room temperature, weigh 100g and put it in a desiccator for later use;

[0061] b. Prepare the aqueous solution of the chemical substances required for the synthesis of the active component sulfonated cobalt phthalocyanine: weigh 3.0g triammonium sulfophthalate, 6.0g urea, 1.5g ammonium chloride, 1.2g6 hydrated cobalt chloride, 0.16 g ammonium molybdate, add 88.1g deionized water after mixing, stir, make it dissolve completely, make the aqueous solution of the required chemical substance of synthetic active component sulfonated cobalt phthalocyanine;

[0062] C, the activated carbon carrier 100g of step 1 is impregnated with the saturated solution of step 2;

[0063] d. Drying: drying the preparation in step 3 at 110° C. for 2 hours, and then cooling to room temperature;

[0064] e. In situ synthesis: heat the preparation in step 4 to 300° C. ...

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PUM

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Abstract

The invention relates to a mercaptan oxidative conversion catalyst for fixed bed gasoline and a preparation method thereof. The mercaptan oxidative conversion catalyst for the fixed bed gasoline is composed of certain amounts of 4-sulfophthalic acid triammonium, urea, ammonium chloride, cobalt chloride hexahydrate, ammonium molybdate and water. Compared with the prior art, the disadvantages of a loaded type mercaptan oxidative conversion catalyst for the fixed bed gasoline that the components are easy to drain and the service life is short are overcome, and the disadvantages of an immobilizedtype mercaptan oxidative conversion catalyst for the fixed bed gasoline that an organic solvent needs to be used in the preparation process, the cost is high and the catalyst is not environmentally friendly are overcome. The catalyst provided by the invention has the advantages of no use of the organic solvent, no environmental pollution, simple process and low cost.

Description

technical field [0001] The invention relates to a catalyst in fixed bed petroleum processing, especially a mercaptan oxidation conversion catalyst and a preparation method. Background technique [0002] The gasoline distillate in the petroleum processing process contains sulfides. The mercaptans in the sulfides not only make gasoline have an unpleasant smell, but also corrode equipment, induce polymerization and rubber reaction, and make gasoline quality worse, especially secondary processed gasoline, such as catalytic Cracked gasoline contains diolefins, and the presence of mercaptans is more harmful. Therefore, the gasoline fraction of the catalytic cracking unit must be sweetened, also called deodorization, before it leaves the unit. Harmful mercaptans are removed, or converted into less harmful disulfides, and the sulfur content of mercaptans is less than 10 μg / g, which is the standard for doctoral experiments. Under alkaline conditions, using sulfonated cobalt phthaloc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/34C10G27/04
Inventor 陆久民阎富山
Owner 一重集团大连工程建设有限公司