METHOD FOR REMOVAL OF PARTICLESFROM CIRCULATING GAS IN PROCESS

摘要

PURPOSE: A process and a separation system for removing particles, in particular soot particles, from particle-containing process gas streams occurring in chemical or petrochemical plants are provided. CONSTITUTION: The process for removing the particles from process gas stream containing particles produced from chemical or petrochemical plants is characterized in that the particle removal is carried out in a partly or collectively thermally regenerable multistage separation system, wherein the particles are advantageously removed from the gas stream in a two-stage separation system, the first stage being composed of centrifugal separators, preferably multicyclones, and the second stage being composed of fine filters made of sintered metals, preferably of ferritic sintered metals, wherein for the regeneration of the fine filters, the temperature of the fine filters is increased to a value above the ignition temperature of soot and, if required, an oxygen-containing auxiliary gas is added, and wherein the regeneration is preferably carried out periodically.