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:
Dec. 06, 1983
Filed:
Apr. 30, 1981
James M Kendall, Pasadena, CA (US);
John V Walsh, Glendora, CA (US);
Abstract
In combination with a reactor for a coal utilization system, a pressure letdown device for accepting from a reactor, a polyphase fluid at an entrance pressure and an entrance velocity, and discharging the fluid from the device at a discharge pressure substantially lower than the entrance pressure and at a discharge temperature and a discharge velocity substantially equal to the entrance temperature and entrance velocity. The device 10 is characterized by a series of pressure letdown stages 28a through 28x including a plurality of symmetrical baffles, designated 30, disposed in coaxially nested alignment, each baffle having defined therein a plurality of ports or apertures 32 of uniform dimensions. The number of ports or apertures for each baffle plate is unique with respect to the number of ports or apertures defined in each of the other baffles of the plurality, the mass rate of flow for each port being a function of the area of the port, the pressure of the fluid as applied to the port and a common pressure ratio established across the ports.