skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Continuous pressure letdown system

Abstract

A continuous pressure letdown system connected to a hopper decreases a pressure of a 2-phase (gas and solid) dusty gas stream flowing through the system. The system includes a discharge line for receiving the dusty gas from the hopper, a valve, a cascade nozzle assembly positioned downstream of the discharge line, a purge ring, an inert gas supply connected to the purge ring, an inert gas throttle, and a filter. The valve connects the hopper to the discharge line and controls introduction of the dusty gas stream into the discharge line. The purge ring is connected between the discharge line and the cascade nozzle assembly. The inert gas throttle controls a flow rate of an inert gas into the cascade nozzle assembly. The filter is connected downstream of the cascade nozzle assembly.

Inventors:
; ;
Issue Date:
Research Org.:
Pratt & Whitney Rocketdyne, Inc., Canoga Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176332
Patent Number(s):
7731783
Application Number:
11/657,254
Assignee:
Pratt & Whitney Rocketdyne, Inc. (Canoga Park, CA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
FC26-04NT42237
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 01 COAL, LIGNITE, AND PEAT

Citation Formats

Sprouse, Kenneth M., Matthews, David R., and Langowski, Terry. Continuous pressure letdown system. United States: N. p., 2010. Web.
Sprouse, Kenneth M., Matthews, David R., & Langowski, Terry. Continuous pressure letdown system. United States.
Sprouse, Kenneth M., Matthews, David R., and Langowski, Terry. Tue . "Continuous pressure letdown system". United States. https://www.osti.gov/servlets/purl/1176332.
@article{osti_1176332,
title = {Continuous pressure letdown system},
author = {Sprouse, Kenneth M. and Matthews, David R. and Langowski, Terry},
abstractNote = {A continuous pressure letdown system connected to a hopper decreases a pressure of a 2-phase (gas and solid) dusty gas stream flowing through the system. The system includes a discharge line for receiving the dusty gas from the hopper, a valve, a cascade nozzle assembly positioned downstream of the discharge line, a purge ring, an inert gas supply connected to the purge ring, an inert gas throttle, and a filter. The valve connects the hopper to the discharge line and controls introduction of the dusty gas stream into the discharge line. The purge ring is connected between the discharge line and the cascade nozzle assembly. The inert gas throttle controls a flow rate of an inert gas into the cascade nozzle assembly. The filter is connected downstream of the cascade nozzle assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {6}
}

Patent:

Save / Share: