Separator blades for mist eliminators

Claim 1

A separator blade assembly for a mist eliminator comprising: a plurality of separator blades disposed parallel to one another to form a respective gas flow passage between each immediately adjacent pair of blades, each blade consisting of an elongated body having a front face and a rear face, whereby in a mist eliminator containing the blade assembly each gas flow passage is formed between a respective blade front face and the facing rear face of the immediately adjacent blade, each blade comprising in the order stated in the direction of gas flow in the respective gas flow passages at least an entry part including a leading edge, a first droplet impingement part, a primary collection channel, a blade junction, a second droplet impingement part, and an exit part including a trailing edge, each blade entry part being inclined at an angle to the subsequent first droplet impingement part of the blade to cause a corresponding change in direction in the respective flow passages, the portion of the front face of the first droplet impingement part between the entry part and the primary collection channel constituting a respective first droplet impingement part front face, each first droplet impingement part front face terminating at the primary collection channel which is formed by a channel-forming hook-like projection protruding from the blade front face into the respective gas flow passage, the outer face of each channel-forming hook-like projection being outwardly convex curved so as to cooperate with the said facing blade rear face of the adjacent blade to form a venturi throat in the respective flow passage, each blade having the second droplet impingement part inclined at an angle to the first impingement part at the said blade junction so as to cause a corresponding change in direction in the respective flow passage at the said junction downstream of the respective venturi throat, the rear face of the second impingement part constituting a respective second droplet impingement part rear face, the second droplet impingement part having a portion of its rear face immediately following the said blade junction disposed so as to be approximately at right angles to the direction of gas flow through the respective venturi throat for corresponding impingement of the gas flow thereon, the said second droplet impingement part rear face portion terminating in a secondary droplet collection channel formed by a channel-forming hook-like projection protruding from the rear face into the respective flow passage.