Recycling system and method

• US 7,383,779 B2
• Filed: 10/07/2005
• Issued: 06/10/2008
• Est. Priority Date: 10/07/2005
• Status: Expired due to Fees

• Current Assignee: American Advanced Technologies LLC
• Original Assignee: American Advanced Technologies LLC
• Inventors: Broussard, Hubert Michael
• Primary Examiner(s): RINEHART, KENNETH
• Application Number:
  US11/246,806
• Publication Number:
  US 20070079738A1
• Time in Patent Office: 977 Days
• Field of Search: 110/165.R, 110/166, 110/167, 110/168, 110/348, 110/235, 110/238, 110/346, 159/47.3, 210/768
• US Class Current: 110/346
• CPC Class Codes: F23G 2201/80 Shredding
• CPC Class Codes: F23G 2206/10 reintroducing the heat in the same process, e.g. for predrying
• CPC Class Codes: F23G 5/006 General arrangement of incineration plant, e.g. flow sheets
• CPC Class Codes: F23G 5/46 Recuperation of heat
• CPC Class Codes: F23G 5/50 Control or safety arrangements
• CPC Class Codes: F23G 7/003 for used articles
• CPC Class Codes: Y02E 20/12 Heat utilisation in combustion or incineration of waste

Abstract

A system and method of recycling non-hazardous waste materials is provided, wherein the method first comprises reducing the size of said non-hazardous waste materials. The method further includes incinerating the non-hazardous waste material within an incineration unit having at least one hearth and a flue gas stack, and transferring the non-hazardous waste liquids and the water to a storage tank. The method further comprises providing a clean water source to a steam generation unit, wherein the steam generation unit receives heated flue gas from the incineration unit, and operating the steam generation unit to produce steam. The steam is directed through one or more heating coils within the storage tank and transfers heat from the steam to the storage tank. Additionally, the non-hazardous waste liquids and water can be recirculated through an evaporator to progressively remove undesired substances from the non-hazardous waste liquid and water, and a first portion of the non-hazardous waste liquid and water can be redirected to the incineration unit to control temperature within the incineration unit. Finally, steam and undesired substances from the evaporator can be redirected to the flue gas stack to flash off undesired substances.

Claims

1. A method of recycling non-hazardous waste materials, comprising:

(a) providing a material source including said non-hazardous waste materials containing non-hazardous waste liquids and water;

(b) reducing the size of said non-hazardous waste materials from said material source;

(c) incinerating said non-hazardous waste material within an incineration unit having at least one hearth and a flue gas stack;

(d) recirculating said non-hazardous waste liquids and said water through an evaporator to progressively remove undesired substances from said non-hazardous waste liquid and said water;

(e) redirecting a portion of said non-hazardous waste liquid and said water to said incineration unit to control temperature within said incineration unit; and

(f) redirecting a portion of steam and said undesired substances from said evaporator to said flue gas stack to flash off said undesired substances.

2. The method of claim 1, wherein said non-hazardous waste materials are used oil filters.

3. The method of claim 1, wherein said non-hazardous waste materials are oil absorbent pads.

4. The method of claim 1, further comprising the step of extracting unconsumed metal material from said hearth.

5. The method of claim 1, further comprising the step of removing fly ash from said hearth.

6. The method of claim 1, wherein said non-hazardous waste liquids comprise lubricating oil.

7. The method of claim 1, wherein said non-hazardous waste liquids comprise glycol.

8. The method of claim 1, wherein said progressive removal of undesired substances from said non-hazardous waste liquid and said water produces a recycled liquid, and wherein said recycled liquid is transferred to a storage tank.