On March 20, the LHDH-01 ferrous sulfide passivation cleaning agent independently developed and produced by Liaoyang Petrochemical Company was successfully applied in the 1.
6 million tons/year hydrocracking unit, and the analysis of various detection indicators of the cleaning waste liquid was qualified
.
According to Li Xue, engineer and project team leader of the Refining Research Office of Liaoyang Petrochemical Research Institute, the passivation cleaning agent has the characteristics of green and clean production process, safe and environmentally friendly cleaning process, and discharge of cleaning waste liquids up to standard
.
During the cleaning process, the passivation cleaning agent converts ferrous sulfide into soluble iron and sulfate through the steps of wetting and penetration, emulsification and dispersion, oxidative decomposition, washing and peeling, and does not produce toxic and harmful hydrogen sulfide gas, which can ensure the operation.
Safe and environmentally friendly on site
.
After 3 years of research, the company's researchers have solved technical difficulties such as poor stability of the cleaning agent and poor coagulation in the later stage of the reaction through hundreds of batches of close small tests and processing application tests.
Passivation cleaning is completed in the reflux tank and heat exchanger of the first fractionator of the cracking unit
.
