After-burning type regenerator with ultralow nitrous oxide discharging and regeneration technology thereof

Abstract

The invention discloses an after-burning type regenerator with ultralow nitrous oxide discharging and a regeneration technology thereof, and belongs to the field of regenerator devices. The after-burning type regenerator is characterized in that a regenerator shell (11) is divided into a lean-phase zone (2) on the upper portion and a dense-phase zone (1) on the lower portion; a cyclone separating device is arranged in the lean-phase zone (2); an after-burning air pipeline is connected with one side of the cyclone separating device; an exhaust pipe is arranged on the upper portion of the cyclone separating device, and a particulate exhausting opening is formed in the lower portion of the cyclone separating device; a main wind distributing device is arranged in the dense-phase zone (1); a catalyst to be generated conveying pipe (5) is arranged on one side of the dense-phase zone (1); and a regenerated catalyst outputting pipe (7) is arranged on the lower portion of the dense-phase zone (1). A main air blower and an after-burning air blower provide main air and after-burning air correspondingly, an after-burning mode of hypoxemia in the regenerator and afterburning in the cyclone separating device is adopted, by adjusting burning atmosphere in the regenerator, burning-out of solid and gaseous combustible materials is realized by using after-burning, and ultralow nitrous oxide discharging is realized.

Description

technical field [0001] The invention relates to a post-combustion regenerator with ultra-low nitrogen oxide emission and a regeneration process thereof, belonging to the field of regenerator equipment. Background technique [0002] The petroleum refining industry is an indispensable and important part of the energy industry. The catalytic cracking process is currently the most important secondary processing process in the petroleum refining industry, and it is also the core process for the lightening of heavy oil and the production of gasoline and diesel components. During the catalytic cracking process, the nitrogen in the raw oil will be converted into NO x , discharged into the atmosphere along with the regeneration flue gas, causing environmental pollution. In April 2015, the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine jointly issued the "Petroleum Refining Industry Pollutant Discharge Standard", ...

AI Technical Summary

Problems solved by technology

However, at present, there is no mature industrialized desulfurization and denitrification technology for catalytic cracking regenerated flue gas in China. There is an urgent need for a technology that can adjust the combustion atmosphere in the regenerator to finally achieve the burnout of solid and gaseous combustibles and achieve ultra-low nitrogen oxide emissions. Regenerator

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