Heavy oil hydrogenating treatment catalyst and preparation method thereof

A technology of oxidation catalyst and hydrogen chloride, which is applied in the direction of preparation of chloride, physical/chemical process catalyst, chlorine/hydrogen chloride, etc., can solve the problems of catalyst active component loss, complicated preparation process, low catalyst activity, etc., and achieve low loss rate , The preparation method is simple and easy, and the effect of increasing the oxygen concentration

Active Publication Date: 2009-02-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an improvement over existing methods that involve loading different chemicals onto specific types of zeolite crystals or pores with certain properties such as size distribution (porosity) and pore volume. These modifications improve their effectiveness when reacting with gases like HCl gas under high temperatures while reducing losses due to lost materials from these processes. Overall this innovative approach provides technical benefits including increased efficiency, extended lifetimes, decreased costs, avoidance of contamination during manufacturing process, and enhanced purification capabilities.

Problems solved by technology

This patents describes various technical problem addressed in this patented text relating to efficient reuse of chiorochemistry reagents from washing residue after usage. Existing methods involve costly purification steps involving distillations/distilling off impurities like salts and acids produced due to incomplete decomposition of certain substances present within these products. Additionally, existing techniques have limitations on how much more useful chlorides may be recovered compared to their original content when they were dissolved in aqueous solutions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Use 20mL containing 13.5gCuCl 2 2H 2 O, 5.5gKCl and 17.5gCe(NO 3 ) 3 ·6H 2 The aqueous solution of O, 50g ReY molecular sieve (dry basis, purchased from Wenzhou Huahua Group Company, the same below), 0.5g field turnip powder (80-100 mesh, purchased from Jiangsu Huahua Chemical Company, the same below), and fully After stirring for 30 minutes, a viscous powder with a humidity of 60% was obtained, which was molded in an extruder to obtain a hydrogen chloride oxidation catalyst with a particle size of 3 mm. Hydrogen chloride is derived from the chlorinated by-products on the toluene ring. After adsorption and purification by alumina, the -1 , the reaction temperature is 360°C, V(HCl) / V(O 2 )=1.5 under the condition of reaction, reaction product is absorbed with excessive KI solution, obtains the hydrochloric acid solution of iodine, respectively with 0.1mol L -1 Na 2 S 2 o 3 Iodine generated by titration of standard solution, with 0.1mol L -1 NaOH standard soluti...

Embodiment 2

[0021] Use 20mL containing 13.5gCuCl 2 2H 2 The aqueous solution of O and 5.5gKCl and 50gReY molecular sieve (dry basis), 0.5g kale powder, obtain the viscous powder that humidity is 60% after fully stirring 30min in the mortar, shape in extruder, obtain particle diameter and be 3mm hydrogen chloride Oxidation catalyst is reacted under the reaction conditions of example 1, and the reaction result after 6 hours is shown in Table 1.

Embodiment 5

[0029] With 20mL containing 14.6gCuCl 2 2H2 O, 5.5gKCl and 14.8gCe(NO 3 ) 3 ·6H 2 The aqueous solution of O and 50gReY molecular sieve (dry base), 0.5g turmeric powder, obtain the viscous powder that humidity is 60% after fully stirring 30min in mortar, mold in extruder, obtain particle diameter and be that 3mm hydrogen chloride oxidation catalyst, The reaction was carried out under the reaction conditions of Example 1, and the conversion rate of hydrogen chloride was 60% after 6 hours.

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Abstract

The invention discloses a hydrogen chloride oxidation catalyst which takes an ReY molecular sieve as a carrier, and copper, alkali metals and rare earth metals are loaded on the molecular sieve, wherein, the load of copper oxide on the molecular sieve is 0.1-30wt%, the load of alkali metal oxides is 0-5wt%, and the load of rare earth metal oxides is 0-10wt%. The invention further discloses a preparation method of the catalyst. The preparation method adopts a mixed rolling-extrusion molding method for preparing the catalyst. The preparation method of the catalyst is simple in operation, and the loss rate of the copper and other active components is low, therefore, the capacity of hydrogen chloride oxidation reaction on the catalyst is improved, the service life of the catalyst is prolonged, the catalyst cost is lowered, the generation of heavy metal ion waste water is avoided, and the purpose of clean production of the catalyst is achieved. The catalyst of the invention can be used for a long time, and the hydrogen chloride oxidation reaction can be carried out at lower temperature.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF TECH
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