Process for acid hydrolysis of waste animal material and product

Claim 1

TALLOW FROM HYDROLYSIS OF ANIMAL BY-PRODUCTS CONTAINING A SMALL AMOUNT OF SODIUM PHOSPHATE FORMED IN SITU DURING HYDROLYSIS WITH PHOSPHORIC ACID AND LESS THAN ABOUT 1% MOISTURE WITHOUT EVAPORATION SUBSEQUENT TO HYDROLYSIS, SAID TALLOW BEING CAPABLE OF STORAGE WITHOUT REFRIGERATION.

Claim 3

A METHOD FOR FORMING TALLOW FROM ANIMAL BYPRODUCTS WHICH COMPRISES GRINDING SAID ANIMAL BY-PRODUCTS TO A SMALL PARTICLE SIZE, HEATING THE RESULTING GROUND ANIMAL BY-PRODUCT IN ADMIXTURE WITH AN AQUEOUS SOLUTION CONTAINING A MAJOR AMOUNT OF PHOSPHORIC ACID AND A MINOR AMOUNT OF ALKALI CARBONATE AT A TEMPERATURE IN THE RANGE OF ABOUT 190*F. TO 235*F. UNTIL THE ANIMAL BY-PRODUCT HYDROLYZES TO TALLOW, AND THEREAFTER MAINTAINING THE TEMPERATURE OF THE CONVERSION MASS IN THE RANGE OF ABOUT 150*F. TO 180*F. WHILE CONTINUOUSLY WITHDRAWING HYDROLYZED TALLOW HAVING A MOISTURE CONTENT LESS THAN ABOUT 1% FROM THE CONVERSION MASS, ADDING ADDITIONAL GROUND ANIMAL BY-PRODUCT FOR HYDROLYSIS THEREOF TO THE CONVERSION MASS AS MAKE-UP AND ADDIDNG ADDITIONAL AMOUNTS OF SAID HYDROLYZING SOLUTION SUFFICIENT TO HYDROLYZE SAID ADDITIONAL ADDED ANIMAL BY-PRODUCT, SAID MINOR AMOUNT OF ALKALI CARBONATE BEING SUFFICIENT TO ENHANCE EVAPORATION OF WATER FROM THE REACTION MIXTURE AND REDUCE MOISTURE CONTENT IN THE HYDROLYZED TALLOW TO SAID LESS THAN ABOUT 1%.

Claim 4

A METHOD FOR FORMING TALLOW FROM ANIMAL BYPRODUCTS WHICH COMPRISES GRINDING SAID ANIMAL BY-PRODUCTS TO A SMALL PARTICLE SIZE, HEATING THE RESULTING GROUND ANIMAL BY-PRODUCT IN ADMIXTURE WITH AN AQUEOUS SOLUTION CONTAINING A MAJOR AMOUNT OF PHOSPHORIC ACID AND A MINOR AMOUNT OF ALKALI CARBONATE AT A TEMPERATURE IN THE RANGE OF ABOUT 190*F. TO 235*F. UNTIL THE ANIMAL BY-PRODUCT HYDROLYZES TO TALLOW, AND THEREAFTER MAINTAINING THE TEMPERATURE OF THE CONVERSION MASS IN THE RANGE OF ABOUT 150*F. TO 180*F. WHILE CONTINUOUSLY WITHDRAWING HYDROLYZED TALLOW HAVING A MOISTURE CONTENT LESS THAN ABOUT 1% FROM THE CONVERSION MASS, ADDING ADDITIONAL GROUND ANIMAL BY-PRODUCT FOR HYDROLYSIS THEREOF TO THE CONVERSION MASS AS MAKE-UP AND ADDIDNG ADDITIONAL AMOUNTS OF SAID HYDROLYZING SOLUTION SUFFICIENT TO HYDROLYZE SAID ADDITIONAL ADDED ANIMAL BY-PRODUCT, SAID MINOR AMOUNT OF ALKALI CARBONATE BEING SUFFICIENT TO ENHANCE EVAPORATION OF WATER FROM THE REACTION MIXTURE AND REDUCE MOISTURE CONTENT IN THE HYDROLYZED TALLOW TO SAID LESS THAN ABOUT 1%.