US 12,286,599 B2
Method and system for preparing fuel by using high acid value biological oil and fat
Bin Xu, Hong Kong (CN); Kam Shing Siu, Hong Kong (CN); Chunjian Xu, Tianjin (CN); and Yongchao He, Tianjin (CN)
Assigned to ECO Bio-Grease Technology Company Limited, Hong Kong (CN); and Tianjin University, Tianjin (CN)
Filed by ECO Environmental Energy Research Institute Limited, Hong Kong (CN); and Tianjin University, Tianjin (CN)
Filed on May 6, 2024, as Appl. No. 18/656,265.
Application 18/656,265 is a continuation of application No. 17/390,941, filed on Jul. 31, 2021, granted, now 12,006,484.
Application 17/390,941 is a continuation of application No. PCT/CN2020/073766, filed on Jan. 22, 2020.
Claims priority of application No. 201910104447.6 (CN), filed on Feb. 1, 2019; and application No. 201920184673.5 (CN), filed on Feb. 1, 2019.
Prior Publication US 2024/0287398 A1, Aug. 29, 2024
Int. Cl. C10L 1/02 (2006.01); B01D 3/00 (2006.01); B01D 3/10 (2006.01); B01J 19/24 (2006.01); C10G 3/00 (2006.01); C10L 1/08 (2006.01)
CPC C10L 1/026 (2013.01) [B01D 3/009 (2013.01); B01D 3/10 (2013.01); B01J 19/245 (2013.01); C10G 3/40 (2013.01); C10G 3/42 (2013.01); C10G 3/50 (2013.01); C10L 1/08 (2013.01); B01J 2219/0004 (2013.01); C10G 2300/1003 (2013.01); C10G 2300/1014 (2013.01); C10G 2300/202 (2013.01); C10G 2300/207 (2013.01); C10G 2300/301 (2013.01); C10G 2300/302 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/04 (2013.01); C10L 2200/0476 (2013.01); C10L 2200/0484 (2013.01); C10L 2290/02 (2013.01); C10L 2290/543 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for preparing fuel using high-acid-value biological grease, comprising:
a thermal cracking reactor, the thermal cracking reactor configured to:
i. receive high-acid-value biological grease, and
ii. subject the high-acid-value biological grease to thermal cracking and deoxidization under a first set of heating conditions;
a vacuum distillation column connected to the thermal cracking reactor, the vacuum distillation column configured to:
i. receive a product obtained from the thermal cracking reactor; and
ii. perform vacuum distillation so as to separate water, a high-acid-value fraction, a low-acid-value fraction and a heavy component;
a catalytic cracking deoxidization reactor connected to the vacuum distillation column, the catalytic cracking deoxidization reactor configured to catalytically crack and deoxidize the high-acid-value fraction obtained from the vacuum distillation so as to separate water and non-condensable gas in the presence of a catalytic cracking deoxidization catalyst under a second set of heating conditions; and
a hydrorefining reaction column configured to:
i. receive a product from the catalytic cracking deoxidization reactor and the low-acid-value fraction from the vacuum distillation column,
ii. mix the product from the catalytic cracking deoxidization reactor and the low-acid-value fraction from the vacuum distillation column, and
iii. perform catalytic hydrodeoxygenation reaction with hydrogen, in the presence of a hydrodeoxygenation catalyst, under a third set of heating conditions.