Process for disposal of combustible waste

Claim 2

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, feeding the shredded material through a high-density press and compressing the same to remove liquids from the material, heating the shredded material in a heating chamber at a temperature of about 800*F for a time sufficient to form a dry charcoal-like fuel, conveying the fuel to a storage chamber, feeding the fuel from the storage chamber to a combustion chamber and incinerating the same at a rate to produce hot gases of about 1500*F, passing a sufficient portion of said hot gases to said heating chamber to maintain at about 800*F the temperature in the heating chamber, and returning a corresponding portion of discharge gases from said heater to said combustion chamber.

Claim 3

The process that is defined in claim 1, wherein said enclosure is ventilated, and gases from the ventilated enclosure are discharged into said combustion chamber.

Claim 4

The process that is defined in claim 1, wherein the fuel in said storage chamber is fluidized prior to feeding the fuel to the combustion chamber, and the fuel is fed to the combustion chamber in a fluidized state.

Claim 5

The process that is defined in claim 3, wherein the fuel in said storage chamber is fluidized by passing cooled exhaust gases from said combustion chamber through said fuel.

Claim 6

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, feeding the shredded material through a high-density press and compressing the same to remove liquids from the material, passing the shredded material downstream through a rotary heating chamber in heat transfer relation to hot gases circulated countercurrent to the shredded material to convert the shredded material to a dry charcoal-like fuel conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases in the heating chamber at the downstream end of the shredded material, and returning to said combustion chamber from the upstream end of said shredded material a corresponding portion of discharge gases.

Claim 7

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, feeding the shredded material through a high-density press and compressing the same to remove liquids from the material, passing the shredded material downstream through a rotary heating chamber in heat transfer relation to hot gases circulated countercurrent to the shredded material to convert the shredded material to a dry charcoal-like fuel conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases in the heating chamber at the downstream end of the shredded material, and returning to said combustion chamber from the upstream end of said shredded material a corresponding portion of discharge gases.

Claim 8

The process that is defined in claim 5, including the steps of sensing the temperature of the gases circulating in said heating chamber, and in response to said sensing simultaneously regulating the flow of said make-up gases and said discharge gases so as to maintain said temperature of about 800*F.

Claim 9

The process that is defined in claim 5, including the steps of sensing the temperature of said hot exhaust gases, and in response to said sensing regulating the rate of feed of the fuel to maintain said temperature of about 1500*F.

Claim 10

The process that is defined in claim 5, including the steps of passing the remaining portion of said hot exhaust gases through a wet scrubber and demister treatment system and then passing the treated gases to atmosphere.

Claim 11

The process that is defined in claim 8, wherein the gases used to fluidize the fuel is supplied from the treated exhaust gases prior to the latter being passed to atmosphere.

Claim 12

The process that is defined in claim 5, including the steps of ventilating said enclosure, and discharging the gases from the ventilated enclosure into said combustion chamber.

Claim 13

The process that is defined in claim 5, including the steps of introducing air into said combustion chamber, sensing the amount of oxygen in the exhaust gases, and in response to said sensing controlling the rate that air is introduced into said combustion chamber.

Claim 14

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, feeding the shredded material through a high-density press and compressing the same to remove liquids from the material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated countercurrent to the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases in the heating chamber at the downstream end of the shredded material, returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases, ventilating said enclosure, discharging gases from the ventilated enclosure into said combustion chamber as the primary source of air for combustion of said fuel, treating the remainder of said hot exhaust gases to remove particulate matter and to lower the temperature thereof, and returning a portion of the treated gases to said storage chamber for fluidizing the fuel.

Claim 15

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, feeding the shredded material through a high-density press and compressing the same to remove liquids from the material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated countercurrent to the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases in the heating chamber at the downstream end of the shredded material, returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases, ventilating said enclosure, discharging gases from the ventilated enclosure into said combustion chamber as the primary source of air for combustion of said fuel, treating the remainder of said hot exhaust gases to remove particulate matter and to lower the temperature thereof, and returning a portion of the treated gases to said storage chamber for fluidizing the fuel.

Claim 16

The process that is defined in claim 12, wherein the gases from said ventilated enclosure are passed in heat transfer relation to said remainder of the hot exhaust gases prior to being discharged into said combustion chamber.

Claim 17

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated through the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases at the downstream end of the shredded material, returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases, ventilating said enclosure, and discharging gases from the ventilated enclosure into said combustion chamber as the primary source of air for combustion of said fuel.

Claim 18

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated through the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases at the downstream end of the shredded material, returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases, ventilating said enclosure, and discharging gases from the ventilated enclosure into said combustion chamber as the primary source of air for combustion of said fuel.

Claim 19

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated through the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases at the downstream end of the shredded material, and returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases.

Claim 20

A process for disposal of combustible solid waste deposited in an enclosure comprising the steps of shredding the solid waste to obtain shredded material, passing the shredded material downstream through a heating chamber in heat transfer relation to hot gases circulated through the shredded material to convert the shredded material to a charcoal-like fuel, conveying the fuel to a storage chamber, fluidizing and feeding fuel from the storage chamber into a combustion chamber and incinerating the same at a rate to produce hot exhaust gases at a temperature of about 1500*F, passing a sufficient portion of said hot exhaust gases to said heating chamber as make-up gases to maintain at about 800*F the temperature of gases at the downstream end of the shredded material, and returning to said combustion chamber from the upstream end of the shredded material a corresponding portion of discharge gases.