Membrane based apparatus for measurement of volatile particles

摘要

A vapor particle separator including a temperature controlled chamber for desorbing vapors from the particulates of an exhaust gas and a separation chamber including a micro porous membrane. The micro porous membrane provides an interface between at least one particle passageway and at least one vapor passageway through the separation chamber. The particle passageway extends from an entrance to the separation chamber to a particle exit from the separation chamber. The vapor passageway extends from the micro-porous membrane to a vapor exit from the separation chamber that is separate from the particle exit from the separation chamber.

主权项

1. A vapor particle separator comprising:
a temperature controlled chamber for desorbing vapors from the particulates of an exhaust gas that enters the vapor particle separator through the temperature controlled chamber; and a separation chamber including a micro porous membrane for providing an interface between at least one particle passageway and at least one vapor passageway through the separation chamber, the particle passageway extends from an entrance to the separation chamber to a particle exit of the separation chamber, the vapor passageway extends from the micro-porous membrane to a vapor exit from the separation chamber that is separate from the particle exit from the separation chamber, wherein the micro porous membrane has a pore size that allows for diffusion of the vapors from the particle passageway through the micro porous membrane to the vapor passageway, wherein the particles having a lower diffusivity than the vapors are obstructed from entering the vapor passageway.