Method of handling spent catalyst

A waste catalyst and treatment method technology, applied in the fields of metal alloy, high-temperature slag and sulfur, and oil recovery, can solve the problems of waste of resources, incomplete recovery, pollution of the atmospheric environment, etc., and achieve the effect of saving resources and avoiding secondary pollution
CN1557977AInactive Publication Date: 2004-12-29DALIAN DONGTAI INDAL WASTE TREATMENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DALIAN DONGTAI INDAL WASTE TREATMENT
Publication Date
2004-12-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention belongs to the field of environment protection and resource utilization ,and is especially waste catalyst processing method. The waste catalyst processing process includes pre-treatment; dry distillation at temperature 400-800 deg.c for 1-2.5 hr to obtain dewatered, deoiled and desulfurized water catalyst white recovering dried gas; mixing waste catalyst with flux, trapping agent and reductant to obtain mixed material; high temperature smelting at 1500-1900 deg.c to convert into melt and smelted tail gas and treated for reuse. The present invention is one environment protecting process producing no secondary pollutant while recovering the components in waste catalyst, has metal recovering rate as high as 93 % and full utilization of waste catalyst resource.
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Description

(1) Technical field

[0001] The invention belongs to the field of comprehensive utilization of environmental protection and resource recovery, in particular to a method for harmless treatment of waste catalysts and recovery of oil, metal alloys, high-temperature slag and sulfur. (2) Background technology

[0002] There are many kinds of spent catalysts, and the spent catalysts treated by the present invention include various hydrodesulfurization, hydrodenitrogenation, hydrodeheavy metal removal, hydrofining, hydrocracking, hydrodearomatization, selective Spent catalysts produced in permanent hydrocracking, catalytic reforming and other processes and desulfurization catalysts discarded in the ammonia synthesis industry, namely molybdenum-cobalt-alumina system, molybdenum-nickel-alumina system, molybdenum-cobalt-nickel-alumina system catalyst , Heavy metals such as vanadium, nickel, iron, and carbon are deposited on the spent catalyst. The vanadium, nickel, iron, etc. deposite...

Claims

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