Summary: Introduced a kind of new-style gush to drench bubble to decoke removes dust the tower applies in processing of boiler flue gas. The multistage that is united in wedlock according to photograph of centrifugal, sparge, bubble purifies a principle, gush of classics tornado sparge, 2 class drenchs bubble board catharsis, desulphurization efficiency is 91.4% , remove dust efficiency is 98.7% . Gush drenchs bubble tower is had remove dust desulphurization unifinication, equipment covers an area of a face to accumulate the characteristic such as small, economic investment, apply to large and medium-sized to decoke of industrial boiler flue gas removes dust.

Key word: Gush drenchs bubble tower to decoke removes dust

1 preface

The sources of energy that is in our country uses up a structure in, coal fired occupies the 70% above that total the sources of energy uses up, and 90% what take countrywide SO2 total discharge capacity about by the SO2 that coal fired produces. Accordingly, be being discharged to what flue gas of coal fired boiler undertakes SO2 of desulphurization, control is our country economy and the pressing demand that the society expands. The flue gas that factory of Beijing some heating power drafts to be boiler of coal fired of a 35t/h undertakes administering, demolish dust catcher of film of water of stone of the hemp in existing φ2500mm Wen Qiu, choose purify the efficiency stability, new-style and efficient gush that runs reliable, investment to suit Beijing city situation to drench bubble to decoke removes dust tower. Remove dust according to desulphurization systematic need, the system of the efficient dewatering equipment with corresponding configuration, boiler circulation, system that add drug, aeration system and automation system.

　　 2 processing program

2.1 designs parameter

The test report that provides according to this factory and data decide main design parameter is: Flue gas measures ≤63000m3/h, air intake air heater exports ℃ of ≤180 of flue gas temperature, air intake air heater exports dust content ≤2500mg/m3, coal fired contains sulfur content ≤0.8% , ≤1.0kPa of obstruction of the system before dust catcher, desulphurization efficiency ≥90% , remove dust efficiency ≥98.2% .

　　 2.2 processing technology

This craft includes the flue gas system, boiler circulation system, system that add drug, aeration system and automation system, technological process sees a picture 1.

Pursue to decoke of 1 flue gas removes dust technological process

　　 System of 2.2.1 flue gas
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