NL8004322A - METHOD FOR REMOVING HYDROGEN SULFUR FROM GASES, IN PARTICULAR COOL DISTILLATION GASES. - Google Patents
METHOD FOR REMOVING HYDROGEN SULFUR FROM GASES, IN PARTICULAR COOL DISTILLATION GASES. Download PDFInfo
- Publication number
- NL8004322A NL8004322A NL8004322A NL8004322A NL8004322A NL 8004322 A NL8004322 A NL 8004322A NL 8004322 A NL8004322 A NL 8004322A NL 8004322 A NL8004322 A NL 8004322A NL 8004322 A NL8004322 A NL 8004322A
- Authority
- NL
- Netherlands
- Prior art keywords
- gases
- sodium
- carbonate
- stripper
- removing hydrogen
- Prior art date
Links
- 239000007789 gas Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title claims description 11
- 238000004821 distillation Methods 0.000 title claims description 4
- 229910052717 sulfur Inorganic materials 0.000 title description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical class [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title 1
- 229910052739 hydrogen Inorganic materials 0.000 title 1
- 239000001257 hydrogen Substances 0.000 title 1
- 239000011593 sulfur Substances 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 23
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000000571 coke Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 1
- 235000011941 Tilia x europaea Nutrition 0.000 claims 1
- 239000004571 lime Substances 0.000 claims 1
- 239000008267 milk Substances 0.000 claims 1
- 210000004080 milk Anatomy 0.000 claims 1
- 235000013336 milk Nutrition 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 235000011118 potassium hydroxide Nutrition 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1468—Removing hydrogen sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying 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
- C10K1/122—Purifying 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 containing only carbonates, bicarbonates, hydroxides or oxides of alkali-metals (including Mg)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Physical Water Treatments (AREA)
- Industrial Gases (AREA)
Description
' I -4 VO 773I -4 VO 773
Werkwijze voor het verwijderen van zwavelwaterstof uit gassen, in het "bijzonder kooldestillatiegassenMethod for removing hydrogen sulfide from gases, in particular carbon distillation gases
De uitvinding heeft betrekking op een werkwijze voor het verwijderen van zwavelwaterstof uit gassen, in. het bijzonder kooldestillatie-gassen,. waarbij het gas met een in kringloop gevoerde wasvloeistof wordt gewassen, die natron- of kaliloog, bij voorkeur ongeveer 3-5# ÏTaOH be-5 vat, waarbij uit de kringloop een deelstroom wordt af getakt, die aan een opwerking wordt onderworpen.The invention relates to a method for removing hydrogen sulphide from gases, in. in particular carbon distillation gases ,. the gas being washed with a circulated wash liquor containing caustic soda or caustic potash, preferably about 3-5 # #TaOH, branching from the cycle a partial stream which is worked up.
Uit het Duitse Offenlegungsschrift 2.505*959 is het bekend aan de . uit de kringloop afgevoerde wasvloeistof een ammoniakafdrijvend middel toe te voeren om de vaste ammoniumzouten af te drijven. Met deze werk-10 wijze is het mogelijk de zich in het ammoniakwater bevindende vaste am-moniakverbindingen zover te ontleden, dat geen vaste ammoniumzouten meer in het afvalwater aanwezig zijn. Bij de bekende werkwijzen wordt de zwavelwaterstof uit de in kringloop gevoerde wasvloeistof met een CO^-bevat-tend rookgas uitgedreven.It is known from German Offenlegungsschrift 2,505 * 959. wash liquid discharged from the cycle to supply an ammonia drift agent to drive off the solid ammonium salts. With this method it is possible to decompose the solid ammonia compounds contained in the ammonia water to such an extent that solid ammonium salts are no longer present in the waste water. In the known processes, the hydrogen sulphide is expelled from the recycled washing liquid with a flue-gas containing flue gas.
15 Bij de bekende werkwijzen, waarbij de uit de wasvloeistof afgetak- te deelstroom aan de ammoniakafdrijver wordt toegevoerd, kan niet worden vermeden, dat naast zwavelwaterstof ook CO^ en ECU worden verwijderd, zodat de ontzwavelingsgraad niet bijzonder hoog is. De vermindering be-draagt ongeveer 0,5-0,8 g H^S/m n kooksovengas. Het is ook niet moge-20 lijk aan de waskringloop meer natronloog toe te voegen, daar anders achter de afdrijver in het afvalwater natriumsulfiet zou worden aangetroffen. Dit is hieraan toe te schrijven, dat het natriumsulfiet slechts wordt gesplitst, wanneer bij voorbeeld chloriden, sulfaten of cyaniden aanwezig zijn.In the known processes, in which the partial stream branched from the washing liquid is supplied to the ammonia drift, it cannot be avoided that, in addition to hydrogen sulphide, CO 2 and ECU are also removed, so that the degree of desulphurisation is not particularly high. The reduction is about 0.5-0.8 g H 2 S / m n coke oven gas. Nor is it possible to add more caustic soda to the washing cycle, since otherwise sodium sulphite would be found behind the diverter in the waste water. This is due to the fact that the sodium sulfite is cleaved only when, for example, chlorides, sulfates or cyanides are present.
25 Aan de uitvinding ligt de opgave ten grondslag de ontzwavelings- graad van de bekende werkwijzen te verbeteren.The object of the invention is to improve the degree of desulfurization of the known processes.
Uitgaande van een werkwijze van de reeds beschreven soort, bestaat de uitvinding hierin, dat de afgetakte deelstroom niet naar de afdrijver, doch in een stripper wordt geleid, waarin het sulfide uit de 30 verbinding met stoom en koolzuur wordt af gedreven, zodat natrium- resp. kaliumcarbonaat ontstaat en dat de waterige carbonaatoplossing, waarvan de temperatuur ongeveer 100°C bedraagt, met een stoechiometrische hoeveelheid kalkmelk tot natrium- resp. kaliumhydroxyde en calciumcarbonaat o ft n i T 91 -2- wordt omgezet, waarop het bij de reactie neerslaande calciumcarbonaat wordt afgescheiden en de KTaOH- resp. KOH-oplossing hernieuwd naar de HgS wasinrichting wordt geleid.Starting from a method of the type already described, the invention consists in that the branched partial stream is fed not into the drift but into a stripper, in which the sulfide is expelled from the compound with steam and carbon dioxide, so that sodium or . potassium carbonate and the aqueous carbonate solution, the temperature of which is about 100 ° C, with a stoichiometric amount of milk of lime to sodium resp. potassium hydroxide and calcium carbonate are converted to T 91 -2-, upon which the calcium carbonate precipitated in the reaction is separated and the KTaOH- and. KOH solution is returned to the HgS washer again.
De uitvinding beoogt voorts, dat de in de stripper in vrijheid 5 gestelde afvaldampen ten dele gecondenseerd en aan het kooksovengas vöör de intrede in de H^S-wasinrichting worden toegevoegd.The invention further contemplates that the waste vapors released in the stripper are partially condensed and added to the coke oven gas before entering the H 2 S scrubber.
Met de-werkwijze volgens de uitvinding is het mogelijk het kooksovengas zo sterk te ontzwavelen, dat aan de zeer strenge eisen van de milieubescherming' wordt voldaan. Anderzijds is het mogelijk de aan de 10 wasvloeistof toegevoegde natronloog nagenoeg geheel terug te winnen, daar de omzetting van de waterige natriumcarbonaatoplossing· met de kalkmelk. ongeveer 99% bedraagt.With the method according to the invention it is possible to desulphurize the coke oven gas to such an extent that the very strict requirements of the environmental protection are met. On the other hand, it is possible to almost completely recover the caustic soda added to the washing liquid, since the reaction of the aqueous sodium carbonate solution with the milk of lime. about 99%.
In de tekening is een uitvoeringsvorm van de uitvinding afgebeeld. Het kooksovengas wordt via de leiding 1 aan de H^S wasinrichting 2 toe-15 gevoerd, waarin het met ammoniakwater sterk van H^S wordt bevrijd. Het ammoniakvater wordt via leiding 3 toegevoerd, het met H^S verrijkte waswater via leiding k afgevoerd en in een niet-afgebeelde ontzuringsinrich-ting geleid·. Daarin warden door stoom of tezamen met ammoniakdampen uit een ammoniakaf drijf inrichting H2S en CO^ uitgedreven. De ontzuurde 20 wasvloeistof wordt in kringloop via de leiding 3 in de H^S-wasinrichting teruggeleid.The drawing shows an embodiment of the invention. The coke oven gas is fed via line 1 to the H 2 S washing device 2, in which it is strongly freed from H 2 S with ammonia water. The ammonia vessel is supplied via line 3, the washing water enriched with H 2 S is discharged via line k and passed into a deacidification device (not shown). H 2 S and CO 2 were expelled from it by steam or together with ammonia vapors. The deacidified washing liquid is recycled in line via the line 3 into the H 2 washing machine.
In het bovendeel van de H2S-wasinrichting vindt de behandeling plaats met een in kringloop gevoerde NaOH-oplossing, die via de leiding 5 toegevoerd en via de leidingen 6 en 7 in kringloop wordt geleid.In the top part of the H2S scrubber, the treatment is carried out with a recycled NaOH solution, which is supplied via line 5 and is recycled via lines 6 and 7.
25 Uit deze kringloop wordt via leiding 8 continu een deelstroom afgetakt en na doorleiden door een warmte-uitwisselaar 9 aan het boveneind van een stripper 10 toegevoerd, in welks onderste deel via de leiding 11 stoom en C02 worden ingeleid.A partial flow is continuously branched from this cycle via line 8 and, after passage through a heat exchanger 9, is fed to the top end of a stripper 10, into which lower part steam and CO2 are introduced via line 11.
De uit de stripper aflopende natriumcarbonaatoplossing komt via 30 de leiding 12 in een houder 13, die van een roerwerk is voorzien en waaraan via een leiding 1U calciumoxyde (CaO) wordt toegevoegd. De uit de houder 13 via de leiding 15 aflopende oplossing, die uit een waterige NaOH-oplossing en calciumcarbonaat bestaat, komt in een bezinkings- of decanteervat 16 waarin de vaste delen worden afgescheiden en via lei-35 ding 17 aan een slipbehandeling worden toegevoerd, terwijl de waterige NaOH-oplossing via leiding 18 door de warmte-uitwisselaar 9» eventueel een verdere koeler 19, alsmede een filter 20, aan de in kringloop gevoer- 8004322 -3- de wasvloeistof wordt toegevoegd en via de leiding 5 weer in de H^S-wasinrichting komt.The sodium carbonate solution running off the stripper enters via line 12 into a container 13, which is equipped with a stirrer and to which 1U of calcium oxide (CaO) is added via line. The solution running down from the container 13 via the line 15, which consists of an aqueous NaOH solution and calcium carbonate, enters a settling or decanting vessel 16 in which the solids are separated and fed to a slip treatment via line 17, while the aqueous NaOH solution is added via line 18 through the heat exchanger 9, optionally a further cooler 19, as well as a filter 20, to the recycled washing liquid, and again via line 5 into the H ^ S washer comes.
De uit de stripper uittredende afvaldampen werden aan het kooks-ovengas vóór de intrede daarom in de eerste wastrap van de H^S-wasinrich-5 ting via leiding 21 toegevoerd, nadat zij een condensor 22 hebben doorlopen.The waste vapors exiting the stripper were therefore supplied to the coke oven gas prior to entry in the first washing stage of the H 2 washing machine via line 21 after they had passed through a condenser 22.
80043228004322
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792933147 DE2933147A1 (en) | 1979-08-16 | 1979-08-16 | METHOD FOR REMOVING SULFUR HYDROGEN FROM GASES, ESPECIALLY CARBON DISTILLING GASES |
| DE2933147 | 1979-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8004322A true NL8004322A (en) | 1981-02-18 |
Family
ID=6078573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8004322A NL8004322A (en) | 1979-08-16 | 1980-07-28 | METHOD FOR REMOVING HYDROGEN SULFUR FROM GASES, IN PARTICULAR COOL DISTILLATION GASES. |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE884801A (en) |
| DE (1) | DE2933147A1 (en) |
| FR (1) | FR2462927A1 (en) |
| GB (1) | GB2057411A (en) |
| IT (1) | IT1133040B (en) |
| LU (1) | LU82716A1 (en) |
| NL (1) | NL8004322A (en) |
| ZA (1) | ZA805034B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10122546B8 (en) | 2001-05-09 | 2006-06-01 | Uhde Gmbh | Process for cleaning coke oven gas |
| WO2009052313A1 (en) * | 2007-10-19 | 2009-04-23 | Fluegen, Inc. | Method and apparatus for the removal of carbon dioxide from a gas stream |
| CN115404110A (en) * | 2021-05-26 | 2022-11-29 | 中国石油化工股份有限公司 | Wellhead carbon dioxide recovery device |
| CN121047553B (en) * | 2025-11-03 | 2026-01-23 | 中国矿业大学(北京)内蒙古研究院 | Underground coal gasification method based on carbon circulation and carbon sequestration |
-
1979
- 1979-08-16 DE DE19792933147 patent/DE2933147A1/en not_active Withdrawn
-
1980
- 1980-07-28 NL NL8004322A patent/NL8004322A/en not_active Application Discontinuation
- 1980-08-04 GB GB8025349A patent/GB2057411A/en not_active Withdrawn
- 1980-08-13 IT IT49495/80A patent/IT1133040B/en active
- 1980-08-14 LU LU82716A patent/LU82716A1/en unknown
- 1980-08-14 FR FR8018010A patent/FR2462927A1/en not_active Withdrawn
- 1980-08-14 BE BE0/201772A patent/BE884801A/en unknown
- 1980-08-15 ZA ZA00805034A patent/ZA805034B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU82716A1 (en) | 1980-12-15 |
| IT1133040B (en) | 1986-07-09 |
| ZA805034B (en) | 1981-09-30 |
| GB2057411A (en) | 1981-04-01 |
| DE2933147A1 (en) | 1981-04-09 |
| FR2462927A1 (en) | 1981-02-20 |
| IT8049495A0 (en) | 1980-08-13 |
| BE884801A (en) | 1980-12-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BV | The patent application has lapsed |