General Electric Company

James Scott Kain

Dinh-Cuong Vuong

Anindra Mazumdar

Edward Pan

Timothy Michael Pickett

Paul Roberts Scarboro

Shaoping Shi

Jennifer Lucia Ramirez

John Caleb Wilson

Sampath Kumar Bommareddy

Priyadharshini Swaminathan

David Brian Fraser

Anil Dhansukh Amlani

Robert Henry Weed

An improved non-OFDM communication system and method replaces an FFT at the receiver with an alternative processing configuration. The use of dense subcarriers and assigning A, B pairs based upon a pre-assigned QAM bit-mapped constellation will be maintained as with traditional OFDM. However, the receiver sample-rate is independent of subcarrier frequency-separation, and the system does not maintain separate real and imaginary signals at the transmitter and receiver. The system also processes receiver samples incrementally without awaiting the end of the modulation cycle, and uses incrementally-processed data to characterize disruptions introduced by the channel so as to better adapt to these disruptions. The system has the potential to increase signal throughput by a factor of two by re-using one of the freed-up information paths previously used by the real and imaginary signals.

Enhanced communication system

In one embodiment, a method includes gasifying a fuel source using a first oxygen stream supplied from an air separation unit (ASU), discharging a gasifier blowdown from a gasification and scrubbing system configured to gasify the fuel source, generating a grey water from the gasifier blowdown, and biologically treating the grey water in a reactor using a second oxygen stream supplied by the ASU.

Gasification waste water treatment using air separation unit oxygen

A gasification system includes a water source, a downstream system configured to receive a first stream having water from the water source, and a carbon a carbon dioxide injector configured to adjust a pH of the water using a second stream having carbon dioxide to form pH-adjusted water.

pH adjustment within gasification system

Gasifier preheater fuel and moderator injection apparatus, systems and methods are provided. A preheater distributor ring is securely mounted within the shell dome of a gasification vessel, for the selective discharge of preheat fuel and oxidizer into the vessel during preheating operations, or for the selective discharge of moderating agents into the vessel during normal gasification operations.

Gasifier preheater fuel system and methods of assembling same

A method of removing suspended solids from a gasification process water stream includes, in an exemplary embodiment, providing a gasification process water stream containing process derived suspended solids, settling at least a portion of the suspended solids from the process water stream in a settling apparatus, providing a filter apparatus having a plurality of filter elements, and removing a portion of the settled solids from the settling apparatus. The method also includes precoating the filter elements with the settled solids removed from the settling apparatus, directing a portion of the process water stream from the settling apparatus to the filter apparatus, and filtering the portion of the process water stream directed from the settling apparatus through the precoated filter elements to remove suspended solids particles to form a filtrate.

Methods for removing suspended solids from a gasification process stream

In one embodiment, a grey water treatment system includes an oxidation reactor for oxidizing grey water. The grey water treatment system also includes a biological reduction and precipitation system with microbes designed to remove one or more target components from the oxidized grey water.

Gasification grey water treatment systems

In certain embodiments, a system includes a gasification system configured to output grey water. The system also includes a grey water zero liquid discharge (ZLD) system configured to receive the grey water and to generate a first stream of distillate. The grey water ZLD system comprises an ammonia stripping system. An amount of water into and out of the grey water ZLD system is approximately equal.

Growing community of inventors

Houston, TX, United States of America

James Scott Kain