Disposal of industrial and sanitary wastes

• US 3,917,564 A
• Filed: 08/07/1974
• Issued: 11/04/1975
• Est. Priority Date: 08/07/1974
• Status: Expired due to Term

• Current Assignee: Robert L. Meyers
• Original Assignee: Robert L. Meyers
• Inventors: Meyers, Robert L.
• Primary Examiner(s): Levine, Herbert
• Application Number:
  US05/495,460
• Time in Patent Office: 454 Days
• Field of Search: 208/46,127,131,370 210/40
• US Class Current: 208/131
• CPC Class Codes: C10B 39/04 Wet quenching
• CPC Class Codes: C10B 39/06 in the oven

Abstract

Sludges and other organic by-products of industrial and community activity which present difficulties due to the presence of dispersed solids can be put to useful purpose with concurrent recovery, in whole or part, of inherent fuel values. Upon injection of such by-products diluted with added water to a delayed coker as aqueous quench medium, water content of the sludge is utilized to cool the hot coke. The dispersed solids and any organic liquids present are apparently dispersed through the coke mass, contrary to the expectation that these contaminants would be filtered out on the surface of the coke face first contacted thereby. The combustible solid portions of the byproduct become a part of the primary fuel (coke). Non-combustible solids (e.g. sand, rust, silt) are distributed throughout the mass of coke in such manner that increase in ash content is acceptable as being within commercial specifications.

Claims

1. A NEW USE FOR ADELAYED COKER IN ADDITION TO ITS AKNOWN OPERATION WHEREIN A BODY OF HOT LIQUID OIL IS MAINTAINED AT THERMAL CRACKING TEMPERATURE IN AN ENLARGED VESSEL FOR AN EXTENDED PEROID OF TIME WITH DISCHARGE OF CRACKED VAPORS FOR RECOVERY OF CRACKED PRODUCT AND ACCOMULATION OF SOLID, POROUS COKE IN THE VESSEL, WHEREUPON THE COKE IS STEAMED TO REDUCE ITS TEMPERATURE AND LIQUID WATER IS INTRODUCED TO THE COKE TO QUENCH IT TO TEMPERATURE AT WHICH IT MAY BE RECOVERED, INITIALLY AT A COKE TEMPERATURE HOT ENOUGH TO VAPORIZE THE WATER AND FINALLY AT A COKE TEMPERATUE SUCH THAT WATER FILLS VOIDS IN THE COKE, SAID NEW COMPRISING ADDITION TO SAID LIQUID WATER DURING THE INITIAL STAGE OF COKE TEMPERATURE HOT ENOUGH TO VAPORIZE THE WATER OF LIQUID SLUDGE WHICH CONTAINS DISPERSED COMBUSTIBLE MATTER AND FINELY DISPERSED SOLID PARTICLES WHICH MAY BE THE SAID COMBUSTIBLE MATTER, WHEREBY THE DISPERSION IS BROKEN WITH INCORPORATION OF COMBUSTIBLE MATTER THEREFROM IN THE COKE WHILE CONDUCTING QUENCHING AND RECOVTERY OF SAID COKE.

2. A new use defined in claim 1 wherein said sludge is biological sludge from activated sludge treatment of waste water effluent.

3. A new use defined in claim 1 wherein said sludge is an oily emulsion with water stabilized by finely dispersed solids.

4. A new use according to claim 1 wherein water introduced to said coke is collected after contact with said coke to provide a source of liquid water to be introduced as aforesaid.