公开(公告)号：WO2021003479A1

公开(公告)日：2021-01-07

申请号：PCT/US2020/040887

申请日：2020-07-06

Applicant: TESSENDERLO KERLEY, INC.

Inventor： WAITE, Scott ,  FRANCO, Jorge ,  KOMINSKI, Harry Charles

IPC: C05D9/02 ,  C05G1/00 ,  C05B17/00 ,  C05C11/00

Abstract: An aqueous composition comprises at least one oxidizable sulfur-based compound. A concentrated extract of the aqueous composition includes a gas chromatography/mass spectrometry-detectable amount of contaminating refinery hydrocarbons but the aqueous composition is free of refinery odor when stored for at least 24 hours at room temperature and 60% relative humidity. The aqueous compositions are prepared from a gas stream obtained from a petroleum refinery process, a coke oven, or the like, containing at least about 4 mol %, more specifically about 15 mol %, of hydrogen sulfide (H 2 S) and/or sulfur dioxide (SO 2 ) and/or ammonia (NH 3 ), and at least about 0.1 mol % of contaminating refinery hydrocarbons. The aqueous compositions are suitable for use in fertilizers, mining and industrial applications.

公开(公告)号：WO2021207112A1

公开(公告)日：2021-10-14

申请号：PCT/US2021/025851

申请日：2021-04-06

Applicant: TESSENDERLO KERLEY, INC.

Inventor： WAITE, Scott ,  FRANCO, Jorge ,  MORAN, Paul ,  LOCKHART, Constance, Lynn, Frank

IPC: C02F1/66 ,  C02F1/72 ,  C02F1/74 ,  C02F1/78 ,  C02F1/24 ,  C02F1/38 ,  C02F1/42 ,  C02F1/44 ,  C02F1/52 ,  C02F101/10 ,  C02F101/20 ,  C02F101/36 ,  C02F103/10 ,  C02F1/00 ,  C02F103/36

Abstract: Methods for removing a soluble heavy metal-sulfur complex from a process solution comprise contacting the process solution with an oxidant to oxidize the heavy metal-sulfur complex and form an oxidized complex precipitate, or with an acid to acidify the heavy metal-sulfur complex and form an acidified complex precipitate, and removing the precipitate from the process solution to provide a heavy metal-reduced solution. The method is advantageous for removing heavy metals such as mercury, cadmium, barium, iron, vanadium and/or manganese from process solutions, for example originating from natural gas production, petroleum production, water treatment or mining.