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Title: Centralized cargo handling system for cryogenic vessels

Abstract

Exxon Research and Engineering CO.'s new design eliminates the need for cargo pumps in LNG tanks by means of a centralized cargo-handling system consisting of a central pumping station located aft of the cargo area and a piping system within the tanks. All of the electrical and mechanical devices such as the safe loading and discharge of the liquefied cargo are centralized at the pumping station. The inert atmosphere required is maintained throughout the pump room, and provision is made for aeration to facilitate inspection, maintenance, and repair. Conventional requirements that can be eliminated include (1) nitrogen inerting of access and interbarrier spaces, (2) gas analysis of the access and interbarrier spaces, (3) temperature sensing of the access and interbarrier spaces, (4) drainage of the access and interbarrier spaces, (5) separate discharge pumps for each tank, and (6) a significant portion of the on-deck cargo piping. By eliminating the installation of motor-driven submerged pumps within each of the tanks and the corresponding potential source of ignition, warm-up and cooldown operations then may be carried out without the intermediate inert-gas-purging operation now required.

Inventors:
Publication Date:
OSTI Identifier:
6470101
Patent Number(s):
US 3848559
Assignee:
Exxon Research and Engineering Co.
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; LIQUEFIED NATURAL GAS; MATERIALS HANDLING EQUIPMENT; CRYOGENICS; PUMPS; TANKS; VALVES; CONTAINERS; CONTROL EQUIPMENT; ENERGY SOURCES; EQUIPMENT; FLOW REGULATORS; FLUIDS; FOSSIL FUELS; FUEL GAS; FUELS; GAS FUELS; GASES; LIQUEFIED GASES; NATURAL GAS; 032000* - Natural Gas- Transport, Handling, & Storage

Citation Formats

Tarossi, F J. Centralized cargo handling system for cryogenic vessels. United States: N. p., 1974. Web.
Tarossi, F J. Centralized cargo handling system for cryogenic vessels. United States.
Tarossi, F J. Tue . "Centralized cargo handling system for cryogenic vessels". United States.
@article{osti_6470101,
title = {Centralized cargo handling system for cryogenic vessels},
author = {Tarossi, F J},
abstractNote = {Exxon Research and Engineering CO.'s new design eliminates the need for cargo pumps in LNG tanks by means of a centralized cargo-handling system consisting of a central pumping station located aft of the cargo area and a piping system within the tanks. All of the electrical and mechanical devices such as the safe loading and discharge of the liquefied cargo are centralized at the pumping station. The inert atmosphere required is maintained throughout the pump room, and provision is made for aeration to facilitate inspection, maintenance, and repair. Conventional requirements that can be eliminated include (1) nitrogen inerting of access and interbarrier spaces, (2) gas analysis of the access and interbarrier spaces, (3) temperature sensing of the access and interbarrier spaces, (4) drainage of the access and interbarrier spaces, (5) separate discharge pumps for each tank, and (6) a significant portion of the on-deck cargo piping. By eliminating the installation of motor-driven submerged pumps within each of the tanks and the corresponding potential source of ignition, warm-up and cooldown operations then may be carried out without the intermediate inert-gas-purging operation now required.},
doi = {},
url = {https://www.osti.gov/biblio/6470101}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {11}
}