Title: Air Preheater transformation And Problems In Operation
Abstract
In this article, a technical reconstruction plan is proposed through analyzing the reason of high air leakage ratio of regenerative air heater. After carrying out the plan air leakage ratio is greatly reduced, performance of heat transferring, flow resistance and the economy of boiler and unit operating are all improved.
I the beginning of this article,I introduce the circle of regenerative air heater ,I view of reaches the xindian power plant #6stove spatial,pre-existance the artual problem,,and analys the reasons and generation of air leakage of air heater ,through to domestic and foreign present common many kingds of transformations plan research analysis,the union reachers the xindian power plant #6stove actual moment situation and the #6stove spatial own movement condition,and through the union to the equipment movement situation track,the record,the analysis and the equipment check,the experiment,the analysis,had found the question In the same time ,we construct the reform plan,design and make out the cell conluding 48 parts .This article tells the reform plans and operation of seal about regenerative air heater.Then,we analy the conclusion about the reform of air heater .Ofcourse,we also analy the inflects between the reformed air heater itself and the boiler.
After the transformation completes, moves for 24 hours after the unit belt full load to carry on the thermal state adjustment, enables the spatial pre- each part of inflations quantity all to achieve biggest when seals the spacing to be smallest, also may see through the spatial air leakage experiment, after the transformation is spatial air leakage rate obviously drops, the coal consumption, an air blower, two air blowers and the drawing fan electricity consumes and Q4 loses correspondingly reduces, Boiler smoke wind system increase, specially an air blower adjustment scope obvious change for the better, spare parts service life and so on seal piece enhances, the overhaul expense and the maintenance work load reduce, the efficiency of boiler and the unit movement efficiency enhance obviously, the boiler movement security had the safeguard.we get prefect banifit from the reforming ,revole the problems resistance in company and reach the goal of saving energe.At the same time ,the writer gives the advice for problems that company should be care for in the future.
Keyword: air heater:air leakage ratio; seal, double seal