Accrued interest paid to the State at the time of the delivery of any series of Bonds and any other proceeds from the sale of Bonds issued pursuant to this Act to make deposits into debt service or reserve funds as may be required under any trust indenture are hereby appropriated and authorized to be expended as provided in this Act and in any trust indentures delivered pursuant to this Act. This Act shall constitute an irrevocable and continuing appropriation of all amounts necessary for such purposes and the irrevocable and continuing authority for and direction to the State Treasurer and the Comptroller to make the necessary transfers and deposits, as directed in the Bond Sale Order. All other proceeds are, at all times, subject to appropriation by the General Assembly and may be obligated or expended only with the written approval of the Governor in such amounts, at such times, and for such purposes as contemplated in such appropriations and in Section 4 of this Act.