US4819571A — Process for the destruction of organic waste mate…

Claim 1

Independent Claim 94 words

A process for the destruction of organic waste material which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. within an isolated first zone, wherein the hot reaction mixture thus obtained is at a temperature in the range of from about 800° C. to about 900° C.; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 2

Dependent Claim 94 words

A process for the destruction of organic waste material which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. within an isolated first zone, wherein the hot reaction mixture thus obtained is at a temperature in the range of from about 800° C. to about 900° C.; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 3

Dependent Claim 105 words

A process for the destruction of organic waste materials containing organic compounds selected from the group consisting of halogenated biphenyls, halogenated benzenes, halogenated phenols, halogenated cycloalkanes, halogenated alkanes, halogenated dioxins, halogenated dibenzofurans and mixtures thereof, which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. over a residence time of about 30 seconds within an isolated first zone; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 4

Dependent Claim 105 words

A process for the destruction of organic waste materials containing organic compounds selected from the group consisting of halogenated biphenyls, halogenated benzenes, halogenated phenols, halogenated cycloalkanes, halogenated alkanes, halogenated dioxins, halogenated dibenzofurans and mixtures thereof, which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. over a residence time of about 30 seconds within an isolated first zone; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 5

Dependent Claim 105 words

A process for the destruction of organic waste material containing organic compounds selected from the group consisting of halogenated biphenyls, halogenated benzenes, halogenated phenols, halogenated cycloalkanes, halogenated alkanes, halogenated dioxins, halogenated dibenzofurans and mixtures thereof, which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. within an isolated first zone; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent over a residence time of about 2 seconds at a temperature above about 1000° C.

Claim 6

Dependent Claim 105 words

A process for the destruction of organic waste material containing organic compounds selected from the group consisting of halogenated biphenyls, halogenated benzenes, halogenated phenols, halogenated cycloalkanes, halogenated alkanes, halogenated dioxins, halogenated dibenzofurans and mixtures thereof, which comprises subjecting said waste material to direct reduction by intimate mixture with a gaseous reducing agent at a temperature above about 600° C. within an isolated first zone; transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent over a residence time of about 2 seconds at a temperature above about 1000° C.

Claim 7

Dependent Claim 96 words

A process for the destruction of organic waste material which comprises subjecting said waste material to reduction with a gaseous reducing agent at a temperature of from about 700° C. to about 900° C., said reduction being effected over a residence time of from about 5 seconds to about 40 seconds and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature of from about 1000° C. to about 1400° C., said oxidation being effected over a residence time of from about 1 second to about 4 seconds.

Claim 8

Dependent Claim 96 words

A process for the destruction of organic waste material which comprises subjecting said waste material to reduction with a gaseous reducing agent at a temperature of from about 700° C. to about 900° C., said reduction being effected over a residence time of from about 5 seconds to about 40 seconds and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature of from about 1000° C. to about 1400° C., said oxidation being effected over a residence time of from about 1 second to about 4 seconds.

Claim 9

Dependent Claim 35 words

The process of claim 4 wherein said reduction is carried out with a gaseous reducing agent in the presence of a metal catalyst selected from the group consisting of iron, nickel, zinc and tin catalysts.

Claim 10

Dependent Claim 76 words

A process for the destruction of organic waste material, which comprises: purging an isolated first zone of oxygen-containing gases; subjecting said organic waste material to direct reduction by intimate mixing with gaseous hydrogen at a temperature above about 600° C. within said first zone, transferring the reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 11

Dependent Claim 76 words

A process for the destruction of organic waste material, which comprises: purging an isolated first zone of oxygen-containing gases; subjecting said organic waste material to direct reduction by intimate mixing with gaseous hydrogen at a temperature above about 600° C. within said first zone, transferring the reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 12

Dependent Claim 19 words

The process of claim 6 wherein said first zone is operated on a continuous basis at an elevated pressure.

Claim 13

Dependent Claim 23 words

The process of claim 6 wherein the reduction is carried out at a temperature of from about 800° C. to about 900° C.

Claim 14

Dependent Claim 26 words

The process of claim 6 wherein the waste material is subjected to reduction within said first zone over a residence time greater than about 5 seconds.

Claim 15

Dependent Claim 18 words

The process of claim 9 wherein said residence time is from about 15 seconds to about 45 seconds.

Claim 16

Dependent Claim 13 words

The process of claim 10 wherein said residence time is about 30 seconds.

Claim 17

Dependent Claim 103 words

A process for the destruction of organic waste material which comprises subjecting said waste material to reduction with a gaseous reducing agent in the presence of a metal catalyst at a temperature of from about 700° C. to about 900° C., said reduction being effected over a residence time of from about 5 seconds to about 40 seconds and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature of from about 1000° C. to about 1400° C., said oxidation being effected over a residence time of from about 1 second to about 4 seconds.

Claim 18

Dependent Claim 103 words

A process for the destruction of organic waste material which comprises subjecting said waste material to reduction with a gaseous reducing agent in the presence of a metal catalyst at a temperature of from about 700° C. to about 900° C., said reduction being effected over a residence time of from about 5 seconds to about 40 seconds and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature of from about 1000° C. to about 1400° C., said oxidation being effected over a residence time of from about 1 second to about 4 seconds.

Claim 19

Dependent Claim 28 words

The process as set forth in claim 12 wherein said metal catalyst is selected from a group consisting of iron, nickel, zinc and tin catalysts and mixtures thereof.

Claim 20

Dependent Claim 21 words

The process of claim 12 wherein the waste material is subjected to oxidation over a residence time of about 2 seconds.

Claim 21

Dependent Claim 77 words

A process for the destruction of organic waste material which comprises: subjecting said waste material to direct chemical reduction, by initial direct intimate mixing with a gaseous reducing agent; subsequent reduction at a temperature above about 600° C. within an oxygen-free isolated first zone, transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 22

Dependent Claim 77 words

A process for the destruction of organic waste material which comprises: subjecting said waste material to direct chemical reduction, by initial direct intimate mixing with a gaseous reducing agent; subsequent reduction at a temperature above about 600° C. within an oxygen-free isolated first zone, transferring the thus reduced gaseous components to a second zone, and thereafter subjecting the hot reaction mixture thus obtained to oxidation with a gaseous oxidizing agent at a temperature above about 1000° C.

Claim 23

Dependent Claim 28 words

A process of claim 15 wherein the gaseous reducing agent is selected from hydrogen, ammonia, natural gas, methane, propane, or water vapor, or a mixture of said agents.

Claim 24

Dependent Claim 23 words

The process of claim 15 wherein the reduction is carried out at a temperature of from about 600° C. to about 1100° C.

Claim 25

Dependent Claim 23 words

The process of claim 15 wherein the reduction is carried out at a temperature of from about 700° C. to about 900° C.

Claim 26

Dependent Claim 23 words

The process of claim 15 wherein the reduction is carried out at a temperature of from about 800° C. to about 900° C.

Claim 27

Dependent Claim 26 words

The process of claim 15 wherein the waste material is subjected to reduction within said first zone over a residence time greater than about 5 seconds.

Claim 28

Dependent Claim 21 words

The process of claim 15 wherein the waste material is subjected to reduction over a residence time of about 30 seconds.

Claim 29

Dependent Claim 23 words

The process of claim 15 wherein the reduction is carried out with a gaseous reducing agent in the presence of a metal catalyst.

Claim 30

Dependent Claim 28 words

The process of claim 15 wherein the hot reaction mixture thus obtained is at a temperature of from about 600° C. to about 1000° C. prior to oxidation.

Claim 31

Dependent Claim 28 words

The process of claim 15 wherein the hot reaction mixture thus obtained is at a temperature of from about 800° C. to about 900° C. prior to oxidation.

Claim 32

Dependent Claim 14 words

The process of claim 15 wherein the gaseous oxidizing agent is air or oxygen.

Claim 33

Dependent Claim 23 words

The process of claim 15 wherein the oxidation is carried out at a temperature of from about 1000° C. to about 1500° C.

Claim 34

Dependent Claim 23 words

The process of claim 15 wherein the oxidation is carried out at a temperature of from about 1200° C. to about 1400° C.

Claim 35

Dependent Claim 27 words

The process of claim 15 wherein the hot reaction mixture is subjected to oxidation with a gaseous oxidizing agent over a residence time of about 2 seconds.

Claim 36

Dependent Claim 37 words

The process of claim 15 wherein the organic waste material is in the form of a liquid, a pumpable sludge, a fine particulate slurry, pulverized solid material, an aqueous sediment or shredded or particulate organic solid material.

Claim 37

Dependent Claim 16 words

The process of claim 15 wherein the organic waste material contains halogenated or non-halogenated organic compounds.

Claim 38

Dependent Claim 36 words

The process of claim 15 wherein the organic waste material contains organic compounds selected from the group consisting of chlorinated biphenyls, chlorinated benzenes, chlorinated phenols, chlorinated cycloalkanes, chlorinated alkanes, chlorinated dioxins, chlorinated dibenzofurans and mixtures thereof.

Claim 39

Dependent Claim 12 words

The process of claim 15 wherein the gaseous reducing agent is hydrogen.

Claim 40

Dependent Claim 19 words

The process of claim 32 including the prior step of purging at least said first zone of oxygen-containing gases.

Claim 41

Dependent Claim 19 words

The process of claim 33 wherein said first zone is operated on a continuous basis at an elevated pressure.

Claim 42

Dependent Claim 26 words

The process of claim 15 wherein the waste material is subjected to reduction over a residence time of from about 15 seconds to about 45 seconds.

Claim 43

Dependent Claim 24 words

The process of claim 35 wherein the metal catalyst is selected from the group comprising iron, nickel, zinc or tin catalyst, or mixtures thereof.

Claim 44

Dependent Claim 19 words

The process of claim 35 wherein the metal catalyst is iron filings, powdered zinc, powdered nickel or powdered tin.

Claim 45

Dependent Claim 28 words

The process of claim 15 wherein said intimate mixture takes place utilizing a nozzle, said waste material being mixed in turbulent mixing relation with said gaseous reducing agent.

Claim 46

Dependent Claim 37 words

The process of claim 38 wherein said waste material is pumped in fluent form as a liquid, a pumpable sludge, a fine particulate slurry, pulverised solid material, an aqueous sediment or shredded or particulate organic solid material.

Claim 47

Dependent Claim 20 words

The process of claim 39 wherein said gaseous reducing agent impinges in convergent impacting relation with said fluent waste material.

Claim 48

Dependent Claim 36 words

The process of claim 15 wherein the organic waste material contains organic compounds selected from the group consisting of halogenated biphenyls, halogenated benzenes, halogenated phenols, halogenated cycloalkanes, halogenated alkanes, halogenated dioxins, halogenated dibenzofurans and mixtures thereof.

Claim 49

Dependent Claim 26 words

The process of claim 41 wherein the gaseous reducing agent is hydrogen, ammonia, natural gas, methane, propane or water vapor, or a mixture of said agents.

Claim 50

Dependent Claim 14 words

The process of claim 41 wherein the gaseous oxidizing agent is air or oxygen.

Claim 51

Dependent Claim 21 words

The process of claim 41 wherein the waste material is subjected to reduction over a residence time of about 30 seconds.

Claim 52

Dependent Claim 23 words

The process of claim 41 or 12 wherein the waste material is subjected to oxidation over a residence time of about 2 seconds.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-04-10	1992-10-10	1993-04-11	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-04-10	1996-10-10	1997-04-11	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-04-10	2000-10-10	2001-04-11	$7700.00	Window Closed / Lapsed

Process for the destruction of organic waste material

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