GB467644A - Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide - Google Patents

Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide

Info

Publication number
GB467644A
GB467644A GB3541835A GB3541835A GB467644A GB 467644 A GB467644 A GB 467644A GB 3541835 A GB3541835 A GB 3541835A GB 3541835 A GB3541835 A GB 3541835A GB 467644 A GB467644 A GB 467644A
Authority
GB
United Kingdom
Prior art keywords
carbon dioxide
hydrogen sulphide
solution
gas
charged
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
GB3541835A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB3541835A priority Critical patent/GB467644A/en
Publication of GB467644A publication Critical patent/GB467644A/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
    • C10K1/08Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/10Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
    • C10K1/12Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors

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)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Alkaline washing liquids laden with hydrogen sulphide are regenerated by heating the liquid in admixture with a washing liquid having the same chemical composition but which has previously been laden with carbon dioxide. Suitable alkaline washing liquids are aqueous or non-aqueous solutions of inorganic substances such as alkali or alkaline earth carbonates, and tri-potassium phosphate, or organic substances such as alkylolamines, especially those containing two or more amino groups, or salts of weak organic acids with strong organic or inorganic bases, e.g. amino or imino acids, especially those described in Specification 457,343. The liquid charged with hydrogen sulphide and/or that charged with carbon dioxide may be in part freed from these gases before they are mixed. In these instances the regeneration may be effected in a boiler having two sections. If the liquid containing carbon dioxide has a low content of this gas, the mixture of carbon dioxide and hydrogen sulphide obtained in the regeneration can be passed over a gas purifying mass and the gas now containing only carbon dioxide can be returned to the regeneration boiler. The washer in which the hydrogen sulphide is absorbed may be divided into two parts, the gas passing upwards therethrough, the upper half of the washer being charged with a washing liquid which has been charged with carbon dioxide while the lower part is charged with a liquid which has served for the removal of hydrogen sulphide and which has been partially freed therefrom. The washer in which carbon dioxide is absorbed may also be divided into two parts, the gas being treated in the lower part with a partially regenerated solution and in the upper part with a solution substantially freed from carbon dioxide. The washing liquid laden with carbon dioxide (but preferably partially freed therefrom), may also be mixed, before the absorption of the hydrogen sulphide, with the liquid intended for that purpose. The washing liquid laden with carbon dioxide may be obtained from the same gas as that from which the washing liquid laden with hydrogen sulphide is obtained. According to one example, water gas containing carbon dioxide and hydrogen sulphide is washed with a solution of the potassium salt of methyl alanine, the solution being regenerated by first boiling it in the upper part of a regenerating column, allowing it to flow down while still hot through the middle part of the column and heating it in the lowest part of the column together with an equal part of the same solution saturated with carbon dioxide. According to a second example, water gas is freed from hydrogen sulphide with a solution of diaminopropanol, is catalysed with steam and is freed from carbon dioxide with another solution of diaminopropanol, the solution charged with hydrogen sulphide being first regenerated in part in one boiler and then being led to a second boiler in which it is regenerated in admixture with the solution charged with carbon dioxide. According to a third example, coke oven gas containing hydrogen sulphide and carbon dioxide is washed with a solution of the potassium salt of diethylene-triamino-acetic acid and the preheated solution is regenerated in a boiler formed by a tower consisting of several sections. The solution having been partially regenerated in the top section, is in part withdrawn from the tower and treated with carbon dioxide, being then led back to the lower part of the tower where it is mixed with the remaining solution and subjected to a final regeneration. The gas evolved during regeneration consisting of steam, hydrogen sulphide and carbon dioxide is treated in a superheated condition with a dry iron-oxide purifying mass whereby pure carbon dioxide is obtained for the above treatment. Specifications 427,394 and 444,327 also are referred to.
GB3541835A 1935-12-21 1935-12-21 Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide Expired GB467644A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3541835A GB467644A (en) 1935-12-21 1935-12-21 Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3541835A GB467644A (en) 1935-12-21 1935-12-21 Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide

Publications (1)

Publication Number Publication Date
GB467644A true GB467644A (en) 1937-06-21

Family

ID=10377482

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3541835A Expired GB467644A (en) 1935-12-21 1935-12-21 Improvements in and apparatus for the regeneration of alkaline washing liquids iaden with hydrogen sulphide

Country Status (1)

Country Link
GB (1) GB467644A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613132A (en) * 1949-04-21 1952-10-07 Fish Engineering Corp Process for selective separation of acidic gases

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613132A (en) * 1949-04-21 1952-10-07 Fish Engineering Corp Process for selective separation of acidic gases

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