公开(公告)号：US3540849A

公开(公告)日：1970-11-17

申请号：US3540849D

申请日：1968-06-17

Applicant: BECKMAN INSTRUMENTS INC

Inventor： NETI RADHAKRISHNA M ,  KELLY TOM J

IPC: G01N21/63 ,  G01N33/00 ,  G01N31/10

CPC classification number: G01N21/631 ,  G01N21/63 ,  G01N33/0013 ,  Y10S436/905 ,  Y10T436/200833 ,  Y10T436/201666 ,  Y10T436/216 ,  Y10T436/25125

公开(公告)号：US3495944A

公开(公告)日：1970-02-17

申请号：US3495944D

申请日：1967-06-28

Applicant: BECKMAN INSTRUMENTS INC

Inventor： MCGEE JOHN J ,  KELLY TOM J ,  HARMAN JOHN N

IPC: B01D53/66 ,  G01N1/34 ,  B01D53/02 ,  B01D53/30 ,  G01N29/02

CPC classification number: G01N1/405 ,  B01D53/66 ,  Y02A50/2347 ,  Y10T436/186 ,  Y10T436/25125 ,  Y10T436/255

Abstract: 1,182,734. Separating gas mixtures. BECKMAN INSTRUMENTS Inc. 14 June, 1968 [28 June, 1967], No. 28442/68. Heading B1L. [Also in Division C1 Ozone is removed from a gas stream containing sulphur dioxide and ozone by adsorbing the ozone with alkylthio mercury chloride, dialkylthio mercury alkylthio lead chloride, dialkylthio lead or a mixture thereof. The adsorbent is preferably coated on a granular support having a large surface area, and may be produced by reacting mercuric or lead chloride with a mercaptan, preferably ethyl mercaptan. Hydrogen sulphide and/or mercaptans may also be removed from the gas stream by adsorbing them with mercuric lead chloride, preferably coated on a granular support. The invention is applicable to removing impurities from a sulphur dioxide stream before it passes through an SO 2 analyser. The gas is passed through a scrubber 12 containing the adsorbents on the granular support (e.g. PTFE), which may be provided with a heater 20 to maintain the temperature at about 40‹C.