Cameron International Corporation

The Dow Chemical Company

Cameron Solutions, Inc.

Petronas Carigali Sdn Bhd

George E Mahley, Iii

Atsushi Morisato

Johnny L Trimmer

Oleg O Medvedev

Shu Pan

Jason M Dietrich

Daniel O Clark

John A Jensvold

Thomas Caldwell Young

Terrence L Caskey

Richard D Peters

Faudzi Mat Isa

Faizal Bin Mohamad Fadzillah

Wan Atikahsari Wan Zakaria

Zalina Binti Ali

Hatarmizi Bin Hassan

Fatimah Binti A Karim

Stephen A Dunning

Randall A Yoshisato

Membranes used in membrane separation technologies change over time due to changes in physical characteristics of the membrane. Predicting remaining useful lifetime of a membrane is performed by fitting an evolution model of the membrane to real-time performance characteristics recorded for the membrane and by comparing later performance characteristics of the membrane to the evolution model. Updating an evolution model during membrane operation improves estimates of remaining useful membrane lifetime and allows for accurate estimates of estimated membrane end-of-life.

Method of determining remaining useful lifetime of membrane for separation process

A membrane assembly includes a tube container having an inlet conduit and a first outlet conduit both oriented in a radial direction, and a second outlet conduit oriented in an axial direction; and a hollow fiber membrane element disposed inside the tube container, the hollow first membrane element comprising a first adapter with an axial permeate fluid passage in a center thereof and an inlet gas passage in a peripheral portion thereof; and a second adapter with an axial permeate fluid passage in a center thereof and a non-permeate fluid passage in a peripheral portion thereof.

Membrane module

Bayesian recursive estimation is used to analyze performance parameters of a membrane separation system based on historical operational data of a membrane system. Bayesian estimation considers historical data over prior time intervals to predict future membrane separation performance to avoid unexpected downtime and unanticipated maintenance. A set of state variables used for modeling performance is used with a degradation model of to anticipate performance changes and maintenance based on measured properties of permeate, non-permeate, and feed flows.

Health management of membrane gas separation systems

A natural gas stream is passed through a single membrane element that is fabricated with two or more distinct types of membrane fibers. The membrane fibers have different characteristics in order to reduce the number of membrane elements required for gas separation and to improve gas separation performance due to changing gas composition because of permeation as the gas travels through the membrane element.

Membrane filter element with multiple fiber types

A shell-side feed, hollow fiber, fluid separation module arranged for counter-flow includes a hollow fiber membrane bundle with each individual hollow fiber membrane in the bundle having an open fiber end and a sealed fiber end. The open fiber ends are encapsulated in a tubesheet located toward the permeate fluid outlet end of the module. The sealed fiber ends are tubesheet-free, uniformly spaced, and located toward the non-permeate fluid outlet end of the module.

Single end, shell-side feed, hollow fiber membrane separation module

The present invention is a bore-fed hollow fiber membrane device which possesses improved shellside countercurrent flow distribution. More specifically, the hollow fiber membrane bundle has a radial Peclet number of about 30 or lower which results in improved fluid recovery and productivity.

Boreside feed hollow fiber membrane device

The present invention is a fluid separation module having improved permeate flow characteristics and improved space/volume requirements. Such modules comprise a hollow fiber bundle, a first and optional second tubesheet, an optional casing, a feed inlet, a permeate outlet, and a non-permeate outlet. The module is coiled, curved or bent into a useful non-linear shape which reduces the space requirements for the module essentially without diminishing the effectiveness of the fluid separation. The feed fluid is introduced to the module either in a boreside or a shellside manner. Coil, french horn, spiral or U-shaped configuration or combinations thereof are useful.

Flexible hollow fiber fluid separation module

Growing community of inventors

Berkeley, CA, United States of America

George E Mahley, Iii