公开(公告)号：US20240262731A1

公开(公告)日：2024-08-08

申请号：US18573591

申请日：2022-05-27

Applicant: Process Limited

Inventor： Robert Eden ,  Mark Moulden

IPC: C02F9/00 ,  C01C1/02 ,  C01C1/10 ,  C02F1/04 ,  C02F1/06 ,  C02F1/20 ,  C02F1/44 ,  C02F101/16 ,  C02F103/06 ,  C02F103/20 ,  C02F103/36

CPC classification number: C02F9/00 ,  C01C1/024 ,  C01C1/10 ,  C02F1/048 ,  C02F1/06 ,  C02F1/20 ,  C02F1/441 ,  C02F1/444 ,  C02F2101/16 ,  C02F2103/06 ,  C02F2103/20 ,  C02F2103/365 ,  C02F2301/046 ,  C02F2303/10

Abstract: A system for recovering ammonia from an ammonia-containing liquid, which system comprises a waste tank (10) for receiving ammonia-containing liquid entering the system; a filtration unit (14) comprising an ultrafiltration unit for receiving the ammonia-containing liquid from the waste tank (10) and filtering the ammonia-containing liquid to remove solids; an ammonia concentrating unit comprising a reverse osmosis unit (18) for receiving ammonia-containing liquid from the filtration unit (14) and concentrating the ammonia within the liquid; and an ammonia-recovery unit (100) for receiving concentrated ammonia-containing liquid from the ammonia concentrating unit (18) and recovering ammonia therefrom, wherein the ammonia-recovery unit (100) comprises a rectifier (102) for separating ammonia from the concentrated ammonia-containing liquid and recovering the ammonia as ammonia-containing gas; and wherein the system does not comprise an ammonia stripper.

公开(公告)号：US11492271B2

公开(公告)日：2022-11-08

申请号：US17269812

申请日：2019-06-28

Applicant: Process Limited

Inventor： Robert Eden ,  Mark Moulden

IPC: C02F1/20 ,  B01D3/34 ,  B01D53/14 ,  B01D5/00 ,  B01D19/00 ,  C01C1/10 ,  C02F1/02 ,  C02F101/16 ,  C02F103/06 ,  C02F103/36

Abstract: A system and method for removing ammonia from an ammonia-containing liquid is described. The system comprises a primary heat exchanger 12 for heating the ammonia-containing liquid to operational temperature, an ammonia stripper 14 for stripping ammonia from the ammonia-containing liquid from the primary heat exchanger and discharging it as ammonia-containing gas, and an acid scrubber 16 for reacting the ammonia in the ammonia-containing gas with acid to form an ammonium salt. The acid scrubber comprises a scrubbed air outlet 32 in fluid communication with a hot air inlet 20 of the ammonia stripper, such that scrubbed air which is discharged from the acid scrubber may be recycled for use in the ammonia stripper. Also described is a system and method for removing ammonia from an ammonia-containing liquid, wherein the system comprises a cold-water scrubber for removing ammonia from the ammonia-containing gas discharged from the ammonia stripper.

公开(公告)号：US20220362686A1

公开(公告)日：2022-11-17

申请号：US17622153

申请日：2020-06-23

Applicant: PROCESS LIMITED

Inventor： Robert Eden ,  Mark Moulden

IPC: B01D19/00 ,  C01C1/10 ,  F23G7/06 ,  C02F1/20 ,  C02F1/52

Abstract: An ammonia stripper (32) and method for stripping ammonia from ammonia-containing water is described, comprising an ammonia-containing water inlet (56), a steam inlet (70), and a forced air inlet (82), and an ammonia-containing gas outlet (36) and a wastewater outlet (72). The steam and air contact the ammonia-containing water in counter-flow to release ammonia from the ammonia-containing water. The ammonia stripper further comprises a steam and air mixing duct (200) shaped to create turbulence in the steam and air flow to promote mixing of the steam and air flow prior to contacting the ammonia-containing water. Also described is an ammonia stripper and method comprising a precipitation unit for precipitating solids from the ammonia-containing water prior to the inlet, and an ammonia stripper and method comprising a steam flash vessel for generating steam from the wastewater produced by the ammonia stripper for recycling into the ammonia stripper. Further described are thermal destructors for destroying ammonia in ammonia-containing gas from an ammonia stripper; and a method of removing ammonia from ammonia-containing gas wherein ammonia-containing gas is drawn from the ammonia-containing gas outlet and returned into the ammonia stripper to mix with the forced air entering the ammonia stripper.