The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 1979
Filed:
Feb. 04, 1977
Konrad Mattern, Bad Homburg, DE;
Helmut Saft, Frankfurt am Main, DE;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
A falling-film evaporator is provided with improved means for uniformly supplying liquid to the heating tubes thereof. The means includes an arrangement whereby a substantially constant-level head of liquid is formed upon the upper tube sheet above which the heating tubes project so that the vapor can pass directly into the open ends of these tubes, the liquid being introduced into lateral openings of constant cross section for each of the tubes below the level of liquid standing on the upper tube sheet. An annular gap surrounding the array of tubes projecting upwardly from the upper tube sheet serves to feed the liquid phase to the standing liquid upon the tube sheet and the substance to be evaporated is introduced into a chamber above the upper tube sheet and is expanded therein to the pressure of the vaporator. The vapor phase passes through the open upper ends of the tubes.