Using self-made air-curtain replacing wind-door for blocking air leakage in ventilation system;

Research on cyclone separating efficiency affected by air leakage at the discharging chute;

To tackle the air leakage problems of trisector rotary air preheater in a comprehensive way;

Transform Czechoslovakia Made 650T/H Direct Boiler 36M crack air leaking;

The method of system transformation,combining sealing are consequently used,and the problem of small mine air leak is solved.

Through to sinter machine air leak the situation analysis,formulated the determination air leak rate method,through to the ChongQing steel and iron Group Company sintering plant two 105m3 sinter machine nose,the airplane tail air leak rate determination,carried on the theoretical calculation to air leak rate and sinter machine between the utilization factor relations.

According to the conclusion,the collecting flue gas tubes were modifyed to prevent air leakage and the satisfactory effect has been abtained.

The research shows that there are two effective measures for controlling methane at the upper corner of goaf,that is,increasing sources of leakage and decreasing the amount of leakage in goaf.

This paper investigates the issue involving the air leakage of preheaters.

Discussion on ventilation leakage law in gateway of room and pillar mining;

From the aplication of the double tracer technique to a mine in Huainan suc cessfully for the first time, it is proved that it is feasible to dectect the ventilation leakage of gob.

During the coal mining advanced forward,there were ventilation leakage dam built with a certain distance in the two gateways to effectivel.

An expression for permeability factor of loose coal in the gate and a formula relating air-leakage intensity and pressure gradient are presented as a result of exploring the law of air-leakage in gate coal seam.

The working principles of air-leakage control systems for rotary air preheaters used already in one power plant have been summarized, the main causes leading to air-leakage of air preheaters being analysed, putting forward a new method for realizing air-leakage control of the air preheaters by using the fuzzy controller based on the language control regulations.

The causes and affecting factors of air-leakage in the rotary air preheater of boiler no.

In view of the problem of the complex ventilation in the caving goaf in the caving finite element numerical model of air leakage flow pattern in the caving goaf is established based on the air leakage seepage equation against heterogeneous porous medium.