# US 8,771,623 B2 · Methods and apparatus for residual material management

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- Number: US 8,771,623 B2
- Document ID: US8771623B2
- Status: Granted
- Kind: B2
- Application number: 12/610,012
- Filed: 2009-10-30
- Published: 2011-05-05
- Granted: 2014-07-08
- Earliest claimed: 2009-10-30
- Assignees: Goodrich Corporation
- Applicants: Tim Centa; Greg Hawkins; Doug Hayes
- Inventors: Tim Centa; Greg Hawkins; Doug Hayes
- Web page: https://patentgrep.com/patent/US8771623B2

## CPC

- B01L 3/502715: {characterised by interfacing components, e.g. fluidic, electrical, optical or mechanical interfaces}
- B01D 53/002: {by condensation}
- D01F 9/32: Apparatus therefor
- B01D 2251/11: Air
- B01D 2257/60: Heavy metals or heavy metal compounds
- B01D 2257/702: Hydrocarbons
- B01L: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS

## Abstract

Residual impurity reduction methods and apparatus are provided. A method comprises conducting a gaseous stream through an unlined portion of a pipe, wherein the gaseous stream comprises sodium and wherein the unlined portion of the pipe is at least about eighteen inches long, injecting a neutralizing agent into the gaseous stream at an injection point, wherein the injection point is located at a point where the sodium is in at least a partially condensed state. The gaseous stream is conducted through a heated portion of a pipe and a cooled portion of a pipe. In addition, methods and apparatus may include a trap system for use with a carbonization furnace.

## Claims

### Claim 1

A residual impurity management method comprising:
directing a gaseous stream through an unlined portion of a pipe under at least one of a vacuum and a partial vacuum, wherein the gaseous stream comprises gaseous sodium, wherein the gaseous stream is at a temperature between 1400° C. and 2200° C.;
allowing the gaseous stream to cool to between 900° C. and below 1400° C.;
injecting a neutralizing agent into the gaseous stream at an injection point, wherein the injection point is located at a point where a portion of the sodium is not in gaseous form and wherein the gaseous stream is at a temperature of between 900° C. and below 1400° C.;
conducting the gaseous stream through a heated portion of the pipe; and
conducting the gaseous stream through a cooled portion of the pipe.

### Claim 2 (depends on 1)

The method of claim 1 wherein the gaseous stream further comprises a hydrocarbon.

### Claim 3 (depends on 2)

The method of claim 2, further comprising condensing the hydrocarbon.

### Claim 4 (depends on 1)

The method of claim 1, wherein the neutralizing agent is at least one of steam, water vapor, nitrous oxide, carbon dioxide, and air.

### Claim 5 (depends on 1)

The method of claim 1, wherein the heated portion of a pipe comprises an inner chamber and an outer chamber, wherein the gaseous stream is in contained within the inner chamber and a heating fluid is circulated through the outer chamber.

### Claim 6 (depends on 1)

The method of claim 1, wherein the cooled portion of a pipe comprises an inner chamber and an outer chamber, wherein the gaseous stream is contained within the inner chamber and a cooling fluid is circulated through the outer chamber.

### Claim 7 (depends on 1)

The method of claim 1, wherein the heated portion of a pipe is at least partially lined.

### Claim 8 (depends on 1)

The method of claim 1, further comprising injecting a secondary neutralizing agent through the cooled portion of the pipe.

### Claim 9 (depends on 8)

The method of claim 8, wherein the secondary neutralizing agent is at least one of steam, water vapor, nitrous oxide, carbon dioxide, and air.