Patent ID: 8661704

Claim:
A substrate processing apparatus comprising: a processing chamber configured to dry a substrate using a high temperature and high pressure fluid; a raw material accommodating unit configured to accommodate a raw material in a liquid state; and a supplying unit configured to supply the raw material received from the raw material accommodating unit to the processing chamber in a state of high temperature and high pressure fluid, the supplying unit comprising: a sealable outer vessel configured to be connected to the processing chamber through a high temperature and high pressure fluid supplying path having an opening/closing valve and connected to the raw material accommodating unit through a raw material supplying path having an opening/closing valve; a heating mechanism configured to heat the outer vessel; an inner vessel provided within the outer vessel while communicating with the inner atmosphere of the outer vessel and configured to receive a raw material from the raw material accommodating unit; and opened holes portions formed in the inner vessel to drop the raw material received from the raw material accommodating unit toward a portion of the outer vessel to be heated which is heated by the heating mechanism, wherein, after a raw material is accommodated in the inner vessel, the raw material is contacted with the portion to be heated and then is heated under the atmosphere of the sealed outer vessel thereby obtaining a high temperature and high pressure fluid to be supplied to the processing chamber.