fcc regenerative flue gas dust-proof denitrification reactor

Abstract

The invention relates to a FCC regenerated flue gas dustproof denitration reactor. The FCC regenerated flue gas dustproof denitration reactor comprises a mixed flue gas inlet segment, a denitration segment, and a purified flue gas exhaust segment; the denitration segment is provided with a denitration unit; a dedusting segment is arranged between the mixed flue gas inlet segment and the denitration segment; dust blocking plates are arranged in the dedusting segment; the dust blocking plates are corrugated blocking plates which are arranged in a multi-layer staggered manner; a dust collector is arranged in the denitration segment; the center line of the dust collector and the center line of the FCC regenerated flue gas dustproof denitration reactor are overlapped; and the lower end of the dust collector is connected with a dust discharging pipeline. According to the FCC regenerated flue gas dustproof denitration reactor, the dust blocking plates are arranged in the FCC regenerated flue gas dustproof denitration reactor, so that flue dust in the mixed flue gas is removed effectively before the mixed flue gas is delivered into the denitration unit, blocking of catalyst channels in the denitration unit by flue dust is avoided, denitration efficiency and denitration effects are improved; and the FCC regenerated flue gas dustproof denitration reactor is provided with drainage grilles and rectifier grilles, so that laminar flow states of the flue gas in the FCC regenerated flue gas dustproof denitration reactor are maintained, and denitration efficiency is increased further.

Description

technical field [0001] The invention relates to a treatment device for the FCC regeneration flue gas of a refinery, in particular to a selective catalytic reduction SCR denitrification process device for the FCC regeneration flue gas of a refinery. Background technique [0002] The world's annual NO emissions into the atmosphere x The total amount is about 50 million tons. In 2008, my country's NO x The emissions have reached 20 million tons, making China the world's largest emitter. If no measures are taken to control, it is estimated that by 2020, NO x Emissions will reach 30 million tons, and my country's efforts to reduce sulfur dioxide by 10% during the "Eleventh Five-Year Plan" period will also be due to NO x This is all offset by a significant rise in emissions. At present, my country has NO x As a binding indicator, it will be included in the scope of total control during the "Twelfth Five-Year Plan" period. NO emitted into the atmosphere x There are three mai...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the present invention provides a flue gas denitrification reactor, which aims to solve the problem of uneven distribution of flue gas inside the reactor in the prior art, which affects the denitrification efficiency and produces ammonia escape.

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