US 12,441,639 B2
Neutralization processing system for ammonia-containing waste fluid and neutralization processing method for ammonia-containing waste fluid
Yoichiro Otani, Kanagawa (JP); Kenji Matsunari, Kanagawa (JP); and Shunma Saito, Kanagawa (JP)
Assigned to MITSUBISHI KAKOKI KAISHA, LTD., Kanagawa (JP)
Filed by MITSUBISHI KAKOKI KAISHA, LTD., Kanagawa (JP)
Filed on Feb. 28, 2025, as Appl. No. 19/067,547.
Claims priority of application No. 2024-030240 (JP), filed on Feb. 29, 2024.
Prior Publication US 2025/0276923 A1, Sep. 4, 2025
Int. Cl. C02F 1/66 (2023.01); C02F 11/00 (2006.01); C02F 101/16 (2006.01)
CPC C02F 1/66 (2013.01) [C02F 11/004 (2013.01); C02F 2101/16 (2013.01); C02F 2201/008 (2013.01); C02F 2209/06 (2013.01); C02F 2209/14 (2013.01); C02F 2209/40 (2013.01); C02F 2209/42 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A neutralization processing system for an ammonia-containing waste fluid, the neutralization processing system separating a waste fluid containing at least sludge and ammonia from lubricating oil after use in a ship diesel engine to neutralize the waste fluid, the neutralization processing system comprising:
a purifier configured to purify the lubricating oil;
a sludge tank;
a sludge discharge line configured to supply the waste fluid separated from the lubricating oil by the purifier to the sludge tank;
a neutralizer supply line configured to supply a neutralizer to the sludge tank; and
a sensor configured to measure pH of the waste fluid or an ammonia concentration of the waste fluid.