Cleanable in situ spark arrestor

A pollution control system for a coke oven charging process, comprising:

• a hood disposed over an open coke oven door for collecting dust, sparks and fumes from the charging of coal into the coke oven;
• an elongated housing attached to an outlet vent of the hood, the housing having a first end and a second end distal from the first end;
• a gas flow inlet in flow communication with an interior portion of the housing for flow of gas and particulates from the hood into the housing;
• a gas flow outlet in flow communication with the housing for flow of gas and particulates out of the housing and into the dust collection system;
• and an elongated spark arrestor disposed in the housing between the first end and the second end, the spark arrestor comprising a plurality of spaced-apart, wedge-shaped members having a minimum gap between adjacent members sufficient to interrupt the flow of combustible particles from the source to the dust collection system;
• and
• a dust collection system in flow communication with the gas flow outlet of the housing.