General Atomics, Inc.

Other

Abitibi-price, Inc.

Abitibi Consolidated Inc.

Kevin William Downey

David A Hazlebeck

Philip Whiting

Stanley L Koutz

Michael H Spritzer

Luke David Bond

Charles Cheslay Mills

Satoshi Nakayama

Glenn T Hong

Toshisuke Isoya

Martin R Martinez

David Alan Hazlebeck

Kunitoshi Suzuki

Luke D Bond

Charles C Mills

The disclosed technology relates to methods of inhibiting corrosion in reaction chambers configured for hydrothermal reaction of feeds containing a heteroatom. An embodiment of such a method comprises providing a feed stream comprising a phosphorus-containing material, an alkali metal compound, water, and a corrosion-inhibitor. The embodiment additionally includes introducing the feed stream and oxidant into a reactor chamber and oxidizing the phosphorus-containing material at an oxidation temperature greater than about 374&#xb0; C. and an oxidation pressure exceeding about 25 bar, wherein the reactor chamber has inner surfaces comprising a material that corrodes when in contact with a phosphorus compound within the reactor. The embodiment additionally includes selectively reacting the corrosion-inhibitor with phosphorus within the reactor, thereby precipitating in the reactor chamber a phosphorus-containing solid inorganic compound. The embodiment further includes forming in the reactor chamber an alkali salt melt and carrying away from the reactor chamber a mixture comprising the solid phosphorus-containing inorganic compound and the alkali salt melt.

Corrosion inhibition in hydrothermal processing

A device for selectively wetting pieces of toilet paper. The device contains a hollow two-piece mandrel containing a nub at each end. The nub of the first piece contains a stabilizing pin for keeping the device in the upright position. The first piece also contains a spring for maintaining outward pressure on the two pieces. The second piece contains an enclosure for a desired liquid lying along a tilted platform and a manually controlled actuator and dip tube. Pushing down the actuator results in a spray of the desired fluid directed at several pieces of toilet paper which have been removed from the roll.

Toilet tissue dispenser with liquid spray

A system and method for performing hydrothermal treatment includes a scraper formed as a hollow cylinder. The scraper is positioned in the reactor vessel with the scraper axis substantially co-linear with the longitudinal axis of the cylindrical reactor vessel. A mechanism is provided to rotate the scraper about the longitudinal axis of the reactor vessel. One or more elongated scraper bars are positioned inside the reactor vessel between the scraper and the longitudinal axis of the reactor vessel. Each scraper bar may be held stationary with respect to the reactor vessel, or each scraper bar may rotated relative to an axis passing through the scraper bar to remove any solids that have accumulated on the scraper or on the scraper bar. To prevent accumulation of precipitating solids on the scraper bar itself, each scraper bar may have internal cooling channels or the capability of releasing a purging fluid.

System and method for solids transport in hydrothermal processes

A supercritical water oxidation reactor is alternately supplied with a feed stream and a flushing stream. The feed stream contains organic and inorganic materials. The organic materials are oxidized under supercritical conditions in the reactor and the inorganic materials precipitate out of solution under the same conditions. The flushing stream is a solution in which the inorganic material is soluble. More than one supercritical water oxidation reactor may be connected so that the feed stream is alternately supplied to each reactor. During the period when the feed stream is being supplied to a reactor the effluent from the reactor is cooled to a temperature at which inorganic precipitates are soluble and is then supplied as a flushing stream to one or more of the remaining connected supercritical water oxidation reactors.

Method and apparatus to remove inorganic scale from a supercritical

A system and method for treatment of a feed material includes a reactor chamber in a reactor vessel. The reactor vessel has a longitudinal axis which is vertically oriented so that gravitational forces act generally in a direction along the axis between a top and a bottom of the vessel. A feed material is introduced by a nozzle into the reactor chamber as a jet stream through the top end of the vessel. This jet stream causes back-mixing in the reactor chamber, contributing to rapid initiation of reaction and general down flow of material through the reactor chamber. The material in the reactor chamber can be quenched to dissolve sticky solids in the effluent before the effluent is discharged from the lower end of the vessel. Further, the reactor vessel can include a plug flow section to carry out additional reaction of the feed material.

Downflow hydrothermal treatment

Apparatus to remove inorganic scale from a supercritical water oxidation

Method to remove inorganic scale from a supercritical water oxidation

Growing community of inventors

San Diego, CA, United States of America

Kevin William Downey