Production method of metal deactivator

Abstract

The invention provides a production method of a metal deactivator. The production method comprises the following steps that A, main components of the metal deactivator comprise 400 kg to 500 kg of mother liquor A, 60 kg to 200 kg of mother liquor B and 7 kg to 30 kg of PH conditioning agents, and after deionized water is added, stirring is carried out for 30-60 minutes. According to the rare earth element catalytic cracking double-metal deactivator, selection of system stabilizers is achieved in the process of improving system stability, selection of the pH conditioning agents is achieved in the process of improving product PH, and meanwhile selection of rare earth powder is achieved in the process of replacing a traditional antimony-tin double-metal deactivator. A midbody of the mother liquor A and the mother liquor B is prepared, a final product can be adjusted conveniently at any time, and the production process is optimized. According to the rare earth element catalytic cracking double-metal deactivator, selection of the system stabilizers is achieved in the process of improving system stability, and selection of the pH conditioning agents is achieved in the process of improving the product PH. The production process is optimized.

Description

technical field [0001] The invention relates to a catalytic cracking metal passivator, in particular to a production method of the metal passivator. Background technique [0002] In the process of catalytic cracking, especially in the process of catalytic cracking with heavy oil as raw material, the raw oil contains heavy metals, such as nickel, copper, iron and other heavy metal ash deposited on the surface of the catalyst, resulting in catalyst poisoning and deactivation and selectivity decline, thus The yield of light oil decreases, and the yield of hydrogen and coke increases. In view of the metal pollution of catalytic cracking catalysts, in addition to demetallization pretreatment of raw materials and selection of catalysts with strong metal resistance, the industry can also improve the properties of catalysts by increasing the replacement rate of catalysts, and use passivators to inhibit The poisonous effect of the metal in the raw material on the catalyst. Among th...

AI Technical Summary

Problems solved by technology

Most of the traditional bimetallic passivators are antimony-tin bimetallic passivators, which have high toxicity, poor stability and large dosage