GB653317A - Improvements relating to the removal of hydrogen sulphide from industrial gases - Google Patents

Improvements relating to the removal of hydrogen sulphide from industrial gases

Info

Publication number
GB653317A
GB653317A GB2757847A GB2757847A GB653317A GB 653317 A GB653317 A GB 653317A GB 2757847 A GB2757847 A GB 2757847A GB 2757847 A GB2757847 A GB 2757847A GB 653317 A GB653317 A GB 653317A
Authority
GB
United Kingdom
Prior art keywords
adsorbent
pipe
vessel
purifier
desorption
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2757847A
Inventor
Francis George Audas
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audas & Thomson Ltd
Original Assignee
Audas & Thomson Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audas & Thomson Ltd filed Critical Audas & Thomson Ltd
Priority to GB2757847A priority Critical patent/GB653317A/en
Priority to ES0185560A priority patent/ES185560A1/en
Publication of GB653317A publication Critical patent/GB653317A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10KPURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00Purifying combustible gases containing carbon monoxide
    • C10K1/32Purifying combustible gases containing carbon monoxide with selectively adsorptive solids, e.g. active carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Treating Waste Gases (AREA)

Abstract

<PICT:0653317/III/1> <PICT:0653317/III/2> In a process for the removal of H2S from gases by treating the gases in a purification zone with an excess of SO2 in the presence of a solid adsorbent for the H2S and SO2, e.g. activated alumina or carbon, which acts also as a catalyst in the reaction of H2S with SO2 resulting in the deposition of S on the adsorbent, the catalytic and adsorptive properties of the adsorbent are maintained at a high level by continuous withdrawal from the purification zone and continuous replenishment of the zone with freshly regenerated adsorbent. In Fig. 2 unpurified gas from the main 1 is mixed with SO2 from the pipe 10 and passed to the bottom of a purifier chamber 3 containing a descending mass of adsorbent solids, preferably in granular form, which is constantly replenished from a hopper 5. The purified gas passes out at 4. The bottom of the purifier may be warmed by any suitable means, a temperature up to 80 DEG C. being maintained. The fouled adsorbent solids pass into a desorption vessel 7 in which adsorbed gases, particularly the excess of SO2, but including moisture, vapours of benzole or similar oils if the original gas included these, are liberated by heat supplied by a pipe system as described below, a final temperature of 160-180 DEG C. being reached, a purging gas admitted by the pipe 8 and preferably being the original unpurified gas stripping the final traces of SO2 from the adsorbent. The stripping gas SO2 &c. pass through a pipe 9 to a condenser 20, 22 for removing benzole, water, &c. and then through the pipe 23 to the main 1. The adsorbent solids pass from the vessel 7 to the regenerator 12 which is supplied by a pipe 13 with air for the oxidation of the sulphur. The SO2 thus generated is led off through a pipe 19 and some may be passed directly back to the main 1 by the pipe 10. The SO2 may be adsorbed in regenerated adsorbent which is returned to the purifier chamber 3 or the SO2 may be supplied from SO2 liquefied after the process or from an external supply. The reaction in the regenerator 12 is isothermic and is controlled by a heat-transfer medium which flows, in pipes, in counterflow to the adsorbent. The adsorbent entering the regenerator 12 is thus heated by the heat-transfer medium, and the material at the bottom of the chamber is cooled. Temperatures of from 280-500 DEG C. are used in the regenerator 12, although the latter temperature should not be used with a carbon adsorbent. The heat transfer pipes may pass upwardly into the desorption vessel 7 to provide the necessary heat in that chamber. The regenerated adsorbent passes through a valve 14 to a receiver 15 from which it is returned by compressed air supplied at 16, to the hopper 5. The pressures in different parts of the plant are adjusted to prevent undesired flows of gases, e.g. a flow from the purifier 3 to the pipe 9. By limiting the air supplied at 13, some of the S may be carried off as vapour with the SO2 and N and recovered in solid form. In operation, the mass at the bottom of the purifier rises in temperature, and adsorbed SO2 is consequently released to be adsorbed by cool adsorbent coming from the hopper 5. This effect is cumulative and the cool adsorbent may become saturated as regards SO2, allowing SO2 to reach the pipe 4. To avoid this, a part of the cool adsorbent may be byepassed directly to the desorption vessel 7, around the warm zone in which the initial adsorption is effected, the warm zone being situated in an open-ended vertical casing concentric with, and within, the walls of the purifier 3, the byepass being provided by the annular space between the casing and the purifier. Alternatively, a byepass pipe external to the purifier may be provided. In Fig. 5 the initial adsorption is effected in a vessel B which, as regards gas flow, is in series with a vessel C through which cool adsorbent passes directly to the desorption vessel 7. A parallel supply of adsorbent passes through the vessel B. In some cases it is necessary to have a desorption rate in the vessel 7 which is greater than the required regeneration rate in the regenerator 12. In this case a part of the desorption material may byepass the chamber 12, being led directly from the vessel 7 to the receiver 15. Specifications 207,196, [Class 90], and 369,913 are referred to.
GB2757847A 1947-10-14 1947-10-14 Improvements relating to the removal of hydrogen sulphide from industrial gases Expired GB653317A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2757847A GB653317A (en) 1947-10-14 1947-10-14 Improvements relating to the removal of hydrogen sulphide from industrial gases
ES0185560A ES185560A1 (en) 1947-10-14 1948-10-13 IMPROVEMENTS INTRODUCED IN THE PROCEDURES FOR CLEANING INDUSTRIAL GASES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2757847A GB653317A (en) 1947-10-14 1947-10-14 Improvements relating to the removal of hydrogen sulphide from industrial gases

Publications (1)

Publication Number Publication Date
GB653317A true GB653317A (en) 1951-05-16

Family

ID=10261915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2757847A Expired GB653317A (en) 1947-10-14 1947-10-14 Improvements relating to the removal of hydrogen sulphide from industrial gases

Country Status (2)

Country Link
ES (1) ES185560A1 (en)
GB (1) GB653317A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756127A (en) * 1952-06-30 1956-07-24 Union Oil Co Chemical oxidation process in the adsorbed phase

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756127A (en) * 1952-06-30 1956-07-24 Union Oil Co Chemical oxidation process in the adsorbed phase

Also Published As

Publication number Publication date
ES185560A1 (en) 1949-02-01

Similar Documents

Publication Publication Date Title
US3455089A (en) Process for removing organic contaminats from air
US2987139A (en) Manufacture of pure silicon
EP0046141B1 (en) Process for removing and recovering volatile organic substances from industrial waste gases
US3534529A (en) Process for recovering organic vapors from airstream
CA1070620A (en) Apparatus for the continuous purification of exhaust gas containing solvent vapours
JPS62269728A (en) One process method for purifying inert gas
GB1196658A (en) A Process for Removing Hydrogen Sulphide and Carbon Dioxide from Fuel Gases and Synthesis Gases Containing the Same
US3712027A (en) Vapor adsorption process for recovering selected components from a multi-component gas stream
US3284158A (en) Method of and apparatus for removing sulfur compounds from gases
US20060144224A1 (en) Regenerable purification system for removal of siloxanes and volatile organic carbons
US2017779A (en) Process for recovering carbon dioxide from a gas mixture
US2817580A (en) Process for purifying hydrogen sulphide containing hydrogen cyanide
US4377396A (en) Process of purifying exhaust air laden with organic pollutants
US3069362A (en) Reactivation of molecular sieves
GB874866A (en) Improvements in process and apparatus for cooling and removing condensables from gases
GB872984A (en) Process for the removal of sulphur trioxide from hot gases
JPS6317488B2 (en)
US3656275A (en) Process for the removal and concentration of a component gas from a multi-gaseous stream
SU1530091A3 (en) Method of cleaning gases containing hydrogen sulfide and sulfur dioxide to obtain elemental sulfur
GB722038A (en) Improvements in or relating to the recovery of sulphur from gases
GB653317A (en) Improvements relating to the removal of hydrogen sulphide from industrial gases
US4039619A (en) Process for the selective removal of hydrogen sulfide from hot coal gasification gases
US3507051A (en) Regeneration process
US3649169A (en) Treatment of gases
US3275403A (en) Removal of carbon dioxide and hydrogen sulfide from gaseous mixtures