Two-stage smokeless incinerator with fluidized bed first stage

Claim 2

A substantially smokeless two-stage contiguous incinerator for incineration of waste products comprising a first stage, contiguous second stage, connecting means between said first and second stage, exiting gas means from said second stage, quench zone at the outlet of said second stage, and wherein said first stage includes fluidizing means positioned generally below said waste products to conduct fluidizing gases upwardly through said waste products thereby maintaining said waste products in at least a partially fluidized state in said first stage, and conducting means for conducting gases from said quench zone to said fluidizing gas means.

Claim 3

The incinerator according to claim 1 further including inlet means in said quench zone for quench gas supply, outlet means for conducting gases from said quench zone.

Claim 4

The incinerator according to claim 2 further including at least one first burner means in said first zone, at least one second burner means in said second zone, and means for conducting quench gases from said quench zone to at least one of said burner means as air supply thereto.

Claim 5

A substantially smokeless two-stage contiguous incinerator comprising: a. a first stage comprising a vaporization zone, at least one first burner means, at least one forced air supply means, inlet means for waste materials, outlet means for gaseous products, and fluidizing air inlet means, b. a second stage comprising a combustion zone, at least one second burner, at least one second forced air supply, entrance for receiving gaseous products from said first stage, outlet for combusted gAseous products from said second stage, c. quench air zone and quench air inlet means, d. connecting conduit for conducting vaporous products from said first stage to said second stage by confined means, e. connecting conduit for conducting vaporous products from said quench air zone to at least one of said first burner means, second burner means, and fluidizing air supply means.

Claim 6

A substantially smokeless two-stage contiguous incinerator comprising: a. a first stage comprising a vaporization zone, at least one first burner means, at least one forced air supply means, inlet means for waste materials, outlet means for gaseous products, and fluidizing air inlet means, b. a second stage comprising a combustion zone, at least one second burner, at least one second forced air supply, entrance for receiving gaseous products from said first stage, outlet for combusted gAseous products from said second stage, c. quench air zone and quench air inlet means, d. connecting conduit for conducting vaporous products from said first stage to said second stage by confined means, e. connecting conduit for conducting vaporous products from said quench air zone to at least one of said first burner means, second burner means, and fluidizing air supply means.

Claim 7

The incinerator according to claim 4 wherein at least one said first burner is directed from the upper area of said first stage substantially downwardly in said first stage.

Claim 8

The incinerator according to claim 5 wherein at least one said first burner is directed downwardly in a substantially vertical position.

Claim 9

The incinerator according to claim 5 wherein at least one said second burner means positioned declivously and at least one second burner means is positioned acclivously into said second stage.

Claim 10

The incinerator according to claim 5 wherein at least one said second burner is directed in a substantially horizontal position into said second stage.

Claim 11

The incinerator according to claim 5 wherein the volumetric ratio of the first stage to the second stage is from 1:2.5 to 1: 6.

Claim 12

The incinerator according to claim 9 wherein the volumetric ratio of the first stage to the second stage is about 1:3.

Claim 13

The incinerator according to claim 4 wherein each said stage and said connecting conduit between said stages is lined with a refractory material.

Claim 14

The incinerator according to claim 4 wherein said combusted gaseous products from said second stage are passed through a waste heat recovery unit prior to exhaustion.

Claim 15

The incinerator according to claim 4 wherein said waste products include solids, semisolids, and liquids, and are selected from amongst garbage, rubber wastes, tire carcasses, oils, paper, and plastics.

Claim 16

A process of incinerating waste materials comprising the steps of: a. heating waste materials in the presence of molecular oxygen containing gases to elevated temperatures while applying preheated molecular oxygen containing fluidizing gases under said waste materials, thereby vaporizing vaporizable components of said waste products substantially retaining therein non-vaporizable components of said waste products, b. separating said vaporized components from said step (a) from said non-vaporizable components, c. oxidatively combusting said vaporized components in the presence of excess molecular oxygen containing gases at an elevated temperature, d. admixing quench air with the vaporous effluent from said step (c), e. withdrawing at least a portion of the quenched steam from said step (d) as said fluidizing gases in said step (a), f. exhausting the remaining products of oxidative combustion of said step (d) thereby converting said waste products into substantially non-vaporizable components and an essentially smokeless oxidized vaporous effluent.

Claim 17

A process of incinerating waste materials comprising the steps of: a. heating waste materials in the presence of molecular oxygen containing gases to elevated temperatures while applying preheated molecular oxygen containing fluidizing gases under said waste materials, thereby vaporizing vaporizable components of said waste products substantially retaining therein non-vaporizable components of said waste products, b. separating said vaporized components from said step (a) from said non-vaporizable components, c. oxidatively combusting said vaporized components in the presence of excess molecular oxygen containing gases at an elevated temperature, d. admixing quench air with the vaporous effluent from said step (c), e. withdrawing at least a portion of the quenched steam from said step (d) as said fluidizing gases in said step (a), f. exhausting the remaining products of oxidative combustion of said step (d) thereby converting said waste products into substantially non-vaporizable components and an essentially smokeless oxidized vaporous effluent.

Claim 18

The method according to claim 14 wherein a further portion of said quenched stream from said step (e) furnishes at least a portion of said molecular oxygen containing gases in at least one of said steps (a) and (c).

Claim 19

The process according to claim 15 wherein said heating-vaporizing step (a) is accomplished by heat produced by the combustion of at least one of a fuel and at least a portion of said waste products.

Claim 20

The process according to claim 15 wherein at least a portion of said molecular oxygen containing gases is supplied in the form of forced air to at least one of said steps (a) and (c), and said excess oxygen is substantially in excess of combustive requirements of said fuel to said steps (a) and (c).

Claim 21

The process according to claim 17 wherein the temperature in said heating-vaporizing step (a) is about 200* to 2,400* F.

Claim 22

The process according to claim 18 wherein the temperature in said oxidative combustion step (c) is substantially higher than said temperature in said (a).

Claim 23

The incinerator according to claim 3 wherein the volume ratio of said first stage zone to said second stage zone is in the range of 1:2.5 to 1:6.