CS251223B1 - Process for producing sulfuric acid under elevated pressure - Google Patents

Abstract

A method for producing sulfuric acid from sulfur under pressure, comprising compressing air, drying it by washing with sulfuric acid, burning sulfur in the dried air to sulfur dioxide, oxidizing sulfur dioxide, absorbing the obtained sulfur dioxide and driving sulfuric acid away from the dissolved sulfur dioxide, and consisting in dividing the compressed air into at least two streams before drying, one of which is subjected to washing with pre-drivant sulfuric acid with a concentration of 92.5 to 94% and the second stream is subjected to washing with a mixture of pre-drivant acid and acid from a monohydrate absorber, while water is added to the acid dripping into the second air stream in an amount ensuring a temperature increase of 10 to 60°C.

Description

1

OriHCAHHE H3OBPETEHHB TO ABTOPCKOMY CBH / LETJLBCTBY 3anBJieHo: 11.08,78 3aHBKa: Ir 2655224 / 23-26 MKHJ: C 01 B 17/76

Abtopw :. OCHexoB, BTBacHJibeB, P.3, XnTepep, MrEepeHrapTen, THBoupapeBa, Α.Γ.ΒοροτΗΗΚοΒ, HHPyMHHyeB η ΚΙ, Η.Κηπρηηηοβ 3aHBHTenb: MockobckhA HHCTHTyT XHMHqecKoro ManiHHocTpoenHH h HayMHo-HccaepoBa-TejibCKHň HHCTHTyT ypoSpeHHH h HHceKTo <byHrHu , HpoB menu CaMon

Ha3BaHne H3o6peTeHHH! CnOCOB ΠΟΠΥΜΕΗΗΒ CEPHOřl KHCJlOTbl H3o6peTeHne othochtch to cnocoSaM nonyqeHHH cepHoň khcjiotm Ha ycTanoBKax, paOoTaKMUHx nop paBneHHeM Bbnne aTMOCfliepHoro h mojkst 6biTb Hcnonb30BaHo b xhmh-qecxofl npoMbnnjieHHocTH. C3ΒβετβΗ Mr. cnocoOoB nonyqeHHa cepHoň kmcjioth nop noBbiiueHHbíM naBJíeHHeM, nO3BOJlHI0mHM CMeCTHTb ρβΒΗΟΒβϋΗβ ΚΟΗΤΗΚΤΗΟΓΟ

HanpHMep, Η3ΒβΟΤΘΗ cnocofi ΠΟΠΥΗΘΗΗΗ CepHOÍI KHCJlOTbl NPH nOBbJIUGHHOM ΑΗΒΠβΗΗΗ, cornacHO KOTopoMy BO3flyxt nopaBaeMbiir b CHCTeMy, Hanan οκημηιοτ it paBneHHH5-50 ATM, nojiynaioT ahokcha CEPB h nponycKaioT ero nepe3 KaTanHTHqecKyio CHCTeMyb a6cop6u; HOHHbie κοποηημ b κοτορωχ nornomaeTca tphokcha cepw. Cnocofi BKJnonaeT .MHorocTýneHqaTyto KaTanHTHnecKyjo KOHBepCHio npw noBbiuieHHOM paBneHHH c npoMewyTon-Ho a6cop6pHen TpHOKCHpa cepbi, npoMbiBKon qacraiHo KoHBepTHpo ^ aHHoro ra3a koh-ueHTpHpOBaHoo cepHoň khcaotoh. CepHaa KHCJioTa a6cop6npyeT Taxwe ahokcha cepbi, BbWejIHWT H3 CepHoN KHCJlOTbl npOIbBHyHnPH nHHH. ΠοτοκBO3pyxa, coflepwamHft pecopóHpoBaHHbift ahokcha cepbi, oGbepHHaioT c ποτοκομ ra3anocne CTaflHH npoMewyTOHHoň προμμβκη qacTHHHo κοηβθρτηροβηηηογό rasa. 06bepH-HeHHbiň ra3OBbiň ποτοκ nopaioT Ha nocnepHioK) CTyneHb KaTajiHmeeKoro οκηοπθηηη ph-oKCHpa cepbi h KOHennyio cTapmo a6cop6pHH TpHOKCHpa cepbi. 3τχορπιΐίΗΗ ra3 nponyc-K3I0T nepe3 pap τβπποοδΜβΗΗΗΚΟΒ, 3aTeM ero TeMnepaTypes noBbiuiaioT, CMeuiHBaa c Me-t3hom h nponycKaa CMecb qepe3 KOHTaKTHbiň annapaT KaTanHTHqecKOPO οκηοιθημη Me-TaHa. IIaMeHHBiMaBaNaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa (1). . 251223 2

He / iocTaTKOM βτογ-ο cnocofía ΗΒΠΗβτοι yBejnmeHHe pacxopa KaTajiH3aTopa b pe3yjibTaTe 6aňnacnpoBannH ra3a Ha nocnepnioio cTynenb KaTanH3a h HepocTaTOBHan nojiHOTaoTflynKH khcjiotm ot pHOKCHpa cepbi. H3Becren TaK »e enocoó nonyneHUH cepHoň khcjiotm H3 cepw πορ ποβμπιθηημμ paBjíe · ηηθμ, BKjnoqaiomHH CTapHH KOMnpHMHpoBaHHH BO3pyxa, ocytnKH ero προμμβκοη cepnoňkhcjiotm, cjKHraHHG cepw b ocytueHHOM BO3pyxe c noayqeHHeM pnoKCHpa CEPB, OKHcne-hhh nocnepnero, aócopópwo noJiyqeHHoro TpHoxcHpa cepw h OTpyBKy cepHoň khcjiotmOT paCTBOpeHHOrO pHOKCHpa cepbl, fljlH OTflyBKH cepHoň KHCJIOTM OT pHOKCHpa cepbiHcnojib3yioT qacTb ocyineHHoro BO3pyxa, κοτορμη 3aTeM nopaioT Ha CMeuieHHe c κοΗΒβρ-THpoBaHHbíM γ'33ομ nepep nocnepiieň CTapHeft KaTaJiHTHnecKoro οκηοπθηηη pnoKCHpa ce · pw. flanHbiH enocoó HBJíHeTCH HaHfionee 6jih3khm to onHCbiBaeMOMy θ3θ6ρετβΗΗΐο no Tex-HHqecKoň cymnocTH h nocTHraeMOMy pc3ynbTaTy (2).

TaKOIi CI1OCOO npOH3BOflCTBa CepHOH KHCJIOTM nofl ΠΟΒΜΠΙβΗΗΜΜ naBJieHHeM Ηβ Π03ΒΟ-JiaeT nonyqHTb cepnyro KHCJiOTy BbicoKoro KanecTBa, copepacamyio MHHHMartbHoe KojiHne-ctbo pacTBopeHHoro pnoKCHpa cepw. B ycjioBHnx, Korpa nojiyneHHe cepHoň khcjiotmnpOp3BOPHTCH ΠΟΡ ΠΒΒΒΘΗΗβΜ 10-20 aTM, paCTBOpHMOCTb HHOKCHfla cepw b cepHoKHCJioTe jjocTaTOMHo BejiHKa. HanpHMep, npn TeMnepaType 50 ° C, PAHHHH 10 aTM (10 to) h ocTaTOHHoM copepacaHHH pHOKCHpa cepw b ra3e, paBHOM 0.5 06.%, b98,3% -hoh cepHoJHOTH pacTBopneTca flo 800 r pHOKCHpa cepbi Ha 1 τ cepHoňkhcjiotm. fločHTbCH pocTaTouHo ποπΗΟΗ oTpyBKH HeÓonbiuoH nacTbio NOTOX po3pyxa6e3 H3MeHenHH TeMnepaTypM paBJíeHHH hgbo3mo h) h b Kho KHCJioTe ocTaercH b pacTBo-peHHOM COCTOHHHH PHOKCHP Cepbl, KOTOpblň ÓypeT peCOpČHpOBaTbCH b npopecce XpaHe H-HHH TpaHcnopTHpOBKH ÓepHOH KHCJIOTM. BbipejIHIomHÍÍCH PHOKCHP Cepbl ΜΟΜΘΤ HBHTbCHhctohhhkom 3arpH3HeHHH oKpyacawmere cpepbl.

HeJlbK) Η3Ο0ρβΤΘΗΗΗ HBJIHeTCH ΠΟΒΒΠΗΘΗΗΘ CTeneHH HHCTOTbl npopyKPHOHHOH CepHOftkhcjiotm h óopee nojiHan peKynepapHH 3HeprHH cacaTbix rasoB. IIocTHBJíeHHaH PENB pocTHraeTCH τθμ, ητο b h3B6CThom cnocoóe, BKpronaiomeM CTA-PHH ΚΟΜΠρΗΜΗρΟΒ3HHH BO3pyxa, OCyiHKH ero npOMbIBKOň cepHoň KHCJIOTOÍÍ, CXHraHHHcepM b ocyuieHHOM BO3pyxe c noJiyneHHeM pHOKCHpa cepbl, oKHCJieHHe nocnepHero AO-copÓpHio nojiyqeHHoro TpHoxcHpa CEPB h oTpyBKy cepnoň khcjiotm ot pacTBopeHHoropnoKCHpa cepM, οκομπρημηροβηηημη BO3pyx peJiHT no MeHbmeň Mepe Ha ποτοκβ pea, ΟΡΗΗ H3 KOTOpblX ΠρΟΜΜΒΗΙΟΤ npepBapHTeJIbHO OTpyTOň cepHoň KHCJIOTOň KOHneHTpa C-pneň 92,5-94% and ppyroň - CMecbio npepBapHTeJIbHO OTpyTOň khcjiotm h khcjiotm h3MOHorHppaTHoro a6cop6epa, npnneM κ KHCJioTe, opomaiomeň βτοροη ηοτοκ BO3pyxa, počasjíniOT BO3pyx b KOJiHnecTse, oÓecnenHBaiomeM noBbnneHHe TeMnepaTypM Ha 10-80 ° C. TaKoe noBbinHHe TeMnepaTypM no3Bo.nneT yBenHMHTb CTeneHb OTpyBKH pHOKCHpacepbi H3 khcjiotm Ha 10-60%. OcTaToqHoe copepacaHHe pHOKCHpa cepM b κηοιοτθ npn3tom He npeBMCHT 15 r S02 Ha 1 τ cepHoň khcjiotm. nocnepyromee pa3BHTne cnocoóa, npecjiepyromee pejib 6onee nojjHoň peKynepapHHBHeprHH cacaTbix ra3OB, b 3aKJiioqaeTCH that HTO CKOMnpHMHpoBaHHbiň BO3pyx penHT Haτρπ noTOKa, PBA H3 kotopmx HanpaBJíaioT Ha nepepaóoTKy οοοτβθτοτβηη b-c BbímeonH caHHHM cnocoóoM and τρβτηή ηοτοκ b KOJinnecTBe 8-12% ot oómero noTOKa BO3pyxaHcnojib3yioT ccHraHHH npHpopHoro ra3a h npopyKTbi cacHraHHH CMeuiHBaroT c ot-xophdihmh -raaaMH co cTapHH aocopopHH c nocnepyiomeon nopaqen nojiyneHHoM cTeMnepaTypoň 700-800 ° C Ha pacniHpeHHe b ra3OByro TypÓHHy. ΠρΗΜβρ 1. (.1ηγ.1). npepBapHTeJIbHO oqmueHHbi οτ πμπη ηοτοκ BO3pyxa b kojih-qecTBe 200000 nightTynaiontHn no Tpyóonposopy 1, KOMnpHMHpyioT b τνρδοκοΜη- peccope 2 after paBJiHHH 11-12 aTM. CacaTbiň BO3pyx H3 TpyóonpoBopa 3 · sing peanoToxa Ha, b nocTynaiowHe TpyfionpoBopbi 4 h 5 h oxJiaacpaioT hx b TennooBMeHíniKe 6 poTeMnepaTypM 50C Ποτοκ BJiaacHoro BO3pyxá H3 Tpy6onpoBopa 4 πορβιοτ Ha npoMbiBKyb TapejibnaTyio KonoHHy 7 opoiuaeMyio ποτοκομ cepHoň khcjiotm H3 TpyGonponopa 8 cKOHpeHTpapHeH khcjiotm 93iO , 5%. H3 TpyfíonpoBopa 5 nopaioT b rapenb- 251223

I-3-qaryro xonoHH 9; ň &amp; Bxofle b kojiohhy (hs eepxHen Tapejixe) CMeinHBaioT flBa ποτοκβeepHoň KHCiioTbi; ποτοκ at TpyConpoBóna 10, HMeiomHň Taxyio we KOHneHTpaiwio, ksk hΠΟΤΟΚ Η3 fpyČOHpoBOfla 8, η ποτοκ khchotu H3 Tpy6onpoBO, at 11 c KOHneHTpanHeň98,510,2%, nightTýnannpift hs μοηογηρρβτηογο a6cop6epa. B one hundred meters ποτοκβ khcjioth co jiepjKHTCH 3HaMHTenbHoe KOJiHnecTBO paCTBOpeHHoro pnoKCHpa pin (after 0.8 κγkhcjioth r β 1), B KOJioHne 9 Ha BepxHHX TapejiKax προτβκββτ npopecc otpybkh (pecop6pHHpHOKCHpa pin πγτβΜ npopyBKH khcjioth cyxHM BoppyxoM) and HH Ha »enexamHx Tapeji- ' Kax πρστβκββτ npopecc ocyniKH B03pyxa_. C penbio yBenHneHHn οτρυβκο β κατοκη β co-noHH 9 no6aéJWH0T ποτοκ Bopu 12 β κοηΗΠβοτΒβ, η6ο6χοπημομ pna pa36aBJieHHHKHcnoTu; b npopecce paa ^ aBJíeHHH npoHcxopHT γΒβπΗΗβΗΗβ TeMnepaTypu Ha 10-80 * 0, HHTeHCH ^ WHpyiomee BbweneHMe pacTBopeSHoro pHOKCHpa cepu. Ποτοκη khcíioth hsτργδοπροΒοροβ 13 hrs 14 nocrynaioT b c6ophhk, 15, hs κογοροΓο no Tpy6onpoeopy 16buboaht nponyKUMOHHyio KHCJioTy b KOJiHMecTee 9Q τ / nac h no TpySonpoBopy 17 ποτοκkhcjioth, nonaBaewň HacocoM 18 Ha opomeHHe kojiohh 7 h 9.

OcymeHHuň B03pyx (h3 Tpy6onpoBopoB 1.9 h 20) oSbepHHHioT β ποτοκ, no-CTynaKwtň B TpyConpoBup 21, h HanpaBjíHWT stot ποτοκ b n.enb 22 pnn cxHraHHa27.3 t / h cepu (ποτοκ hs TpyOonpoBopa 23). Taau, copepwaopie 4í. o6.% pHOKCHpacepu h HMerauHé TeMnepaTypes 1100eC. HanpaBJíHioT b κοτβπ γτΗΠΗ3βτορ-24, night co-Topór c TeMnepaTypoft 440 "C hx nopaioT b KoHTaKTHo-a6cop6nHOHHHň y3en 25th nocneΛΒΟήΗΟΓΟ KOHTaKTHpOBaHHH (CTeneHb ΚΟΗΤβΚΤΗρΟΒβΗΗΒ 99.85%) PBO0HOň a6cop6HHH (cTeneHb a6cop6nHH 99.99%) h nocnepywmfro noporpeBa βηχποπηηχ rasoB H3 TpyOo- .nposopa 26 after TeMnepaType 450-550 C aa cneT Tc na ne OK OK OK pHOKCHpacepu hx HanpaBninoT Ha raaoBy® TypeCHHy 27, β κοτοροή peKynepHpyeirca andHeprHacxaToro ra3a; nocch TypCHHU ras oxnampaioT b 3KOHoMa # 3epe 28hBwCpacMBawTb st-Moc ^ iepy. · HepocTaromyio pn c aHH sHeprun poCasnaioT 3a cneT-paGoTu napoBoft Typ-6hhn 29.

HpHwep 2, (.2ηγ. 2). PassHTHe cnocoCa aaKjnonaeTCH β that ητο οκομπρημηροβηη-HWN cacaruň BO3pyx hs TpyConpoeopa 3 HME »mHft TeMnepaTypy 200eco, ρεηητ Ha τρκποτοκ», KOTopue πορβ »τ b TpyConpoBopu 4.5 h 30 Ocyraxa ποτοκοβ eospyxa H3 TPY-ConpoeopoB 4h 5 and Taras OTpyBKa khchotu h nocnepysMUas nepepaCoTKa race AHA norHHHa onHcaHHHM b npHMepe first race XBocTOBHe hs TpyConpoBopa 26 ΒΗχορηηριβH3 βτορογο MOHorHApaTHoro apcopSepa, HarpeBatoT b TenriooCMeHHHKax κοητβκτηογοyana after .450 * 0 h b HanpaBnJuoT y3en CMemeHHH 31 Β κοτορΗή τρκχβ nopaioT ποτοκBnaxHoro Bóapyxa H3 TpyĎonpoBopa ŤeMnepaTypoří 30 C 200 * 0 h 8000 ημ3 / η πρκρορ-ηογο mana Tpy.ĎonpoBona 32. B pe3ynbTaTe cropaHHH npupopHoro ra3a H CMemeHHHnponyjíTOB cropaHHH c xboctobmíh rá3aMH TeMnepatypa ποτοκβ β y3ne CMemeHHH 31AocTHraeT 760 C h 3th race HanpaBnaioT Ha TypCHHy 27 Hocnepyiomee oxnaacpeHne ra-3OB, npomepmHX pacnoipeUHe β τγρ κΗβ 27 ηροβορΗΤ B 3KoHOMaň3epe 28, night neroXBocTOBue ra3H BuCpacMeatoT β aTMoeftepy. KonunecTBo cxHraeMo cepu b ρηηηομnpHMepe cocTaBnaeT 23 t / h, and KojiHnecTBO nonynaeMoň προργκρΗΟΗΗοϋ khchotm - 83 t / h,. ·, <. , ΠρκΜβρ 3. (.3ηγ.3). B cooTBeTc.TBHH c npHMepoM 1 προβορητ ocyraxy peyx ποτο ^ · kob so3nyxa. OcymeHHMft BO3pyx H3 TpyConpoeopa 19 nocne TapenbnaToro aCcopCepa7 ηβηητ to λββ ποτοκβ, HaitpasnaeMue β Tpy6onpoBonu 34 h 35. MeHbniH ποτοκ # CY-hs XORO Boanyxa Tpyčonpofiona 34 HanpaBnaioT Ha cxHraHne npHponHoro race Nocti-nawmero well TpyConpoBony 32 h CMeaienne Yene CMemeHHH b 31 c οτχοπηπ (ημη ra3aMHH3 TpyGonpoBopa 26th nocne CMememin ποτοκοβ b ysne CMenieKnn 3R ποτοκ race «3TpyConpoBona TeMneparypoů 33 c 76O ° C ποραιοτ Ha TyptfHHy 27h nocjie npoxoxneHHH3KOHOMaň3epa 28 BuepacuBaioT b aTMoefcepy, Bonbinuň ποτοκ cyxoro Bosnyxa H3 TPY-BonpoBona 35 nonaioT b nenb NNA cwHiaHHH cepu 22, s κρτοργιο Tarase nopawT ocy-meHHbiB BO3pyx H3 Tpy6onposopa 20 nocne κοηοΗΗΗ 9. nocnepyioinaH nepepaGoTKa ra-3ob anajiorHMna oiiHcaHHon b npHMepax 1 h 2. 251223 '· - -

TexHHKo-SKOHoMMMecKaít θφφθκτΗΒΗοοτΒ npefljioweHHoro cnocoóa coctoht CHH b »E-hhh 3» epro3aTpaT BCJieflCTBHe otcytctbhh pacxo.ua sneKTposHeprHH Ha c »aTne ra3a and Taxwe b 3HanHTenbHOM yMeHbnieHHH xanHTajibHbix saTpar, KpoMe τογό, nojiyqaeMancepnaa KHCJioTa coflepntHT MHHHManbHoe KojinnecTso pacTBopeHHoro flHOKCH.ua cepw ( neBbnne 15 Ha r 1 τ cepHoft khcjiotm) ητο πο3Βοππβτ cymecTBeHHo noBbicHTb ee Xa-MecTBO h yMeHbniHTb 3arpH3HGHHe oKpywaionteň cpeflH 3a CNET CBGfleHHB κ MHHHMyMyoCtena flecopGHpyeMoro ra3a b npoflecce c6poca flaBjíeHHH cepHOH khcjiotm h nocą-flyrauero xpaHeHHH.

ΦΟΡΜΥϋΑ H30EPETEHHH first Cnoco6 nojiyHeHHH cepHoft khcjiotm H3 cepw nOFL flaeaeHHeM, BKarcaaioinHň CTaflHHΚΟΜΠρΗΜΗρΟΒβΗΗΗ BO3flyxa, OCyiHKH ΘΓΟ ΠρΟΜΜΒΚΟή CepHOň KHCaoTOň, CJKHraHHe cepbl b ocymeHHOM BO3flyxe c noayaeHHeM flHOKCHfla cepw, OKHcaeHHe nocaeflHero, FLIN-a6cóp6 noayqeHHoro TpnoKCHfla cepw h OTflyBKy cepHoft khchotm rpm pacTBopeHHoro ahok- CHfla CEPB, oTaHaaromuftcH τθμ, ητο c peabto noBbnneHHH cTeneHH hhctotm npoflyKflHOHnoň cepnoň khchotm, CKOMnpHMnpoBaHHbiň BO3flyx nepefl ocyniKoň fleanT well MeHbineň Me · PE Ha flea noTOKa ^ H3 oahh kotopmx npoMMBajoT .npeflBapHTenbHo OTflyToň cepnoňKHcnoToň c KOHfleHTpaflHeň 92,5-94% and flpyroň - CMecbw npeflBapHTenbHo OTflyToňkhcjiotm h khchotm H3 MosorHflpaŤHoro a6cop6epa, nPNA κ KHCJioTe, opomaioiueňBTopoň ποτοκ BO3flyxa, flo6aBjnnoT BOfly b KOjnroecTBe, oSecneanBaioineM noBbímeHHeTeMnepaTypbi at 10-80 ° C, but the second CnocoS N.1 oTJiHMaioqHťícH τβΜ, HTO c nejibio 6onee Noj RAON peKynepaflHH3Η6ΡΓΗΗ, CKOMnpHMHpOBaHHblň BO3flyX flCJIHT Ha TPH ΠΟΤΟΚΒ, FLBA H3 KOTOPMX HanpaB-Ha jihiot nepepaCoTKy cootbgtctbhh b c N.1 and τρβτκή ποτοκ b KoanaecTBe 8-12% oto6qero ποτοκβ BO3flyxa Hcnonb3yioT FlaA οκηγβηηη npHpoflHoro ra3a h npoflyKTbi cjkh-Rahho CMemHBaioT c otxoaíhuhmh ra3aMH co CTaflHH a0cop6flHH c nocaeflyromene noflaanenojiyqeHHoMcecH c TeMnepaTypo 700-800 ° C Ha pacmHpeHHe b ra30Byro TypHHy.

HcTOHHHKH HOHOpMaflHH, ΠρΗΗΗΤΜβ BO ΗΗ3ΒΗΗΜ6 ΠρΗ 3KCnepTH3e H3o6peTeHHHi 1. IlaTeHT C1I1A, kji. 23-168> 3432263 11 .03.69. 2. IlaTeHT OpaHflHH κπ. OJ C 01 B 17/76 P 1541087, 24.03.69. ΡΕΦΕΡΑΤ

CnOCOE nOJiy ^ EHHJI CEPHOfi KHCJlOTbl

Cnoco6 noJiyneHHH cepHoň khcjiotm H3 CEPB nOFL noBbnneHHbíM flasaeHHeM BKjnonaeTCTaflHH ΚΟΜΠΡΗΜΗΡΟΒΒΗΗΗ BO3flyxa, OCyfflKH BO3flyxa, CJKHraHHH cepbl C. nonyneHHeM 1 "cepHHCToro aHrHflpHfla, oKHCJieHHH cepHoro aHrHflpHfla, a6cop6u HH cepHoro aHrHflpHfla h OTflyBKH cepHoň khcjiotm rpm pacTBopeHHoro aHrHflpHfla. CoraacHo Η3θ6ρετβΗΗΐο, CKOMnpHMHpoBaHHbiň coflepwamHň BJiary Bosflyx nepefl ocymKoň Flea well MeHbmeň MePen FLBA noTOKa, oahh H3 kotopmx προμμβηιοτ npeflBapHTejibHo OTflyToň cepHoň khcjio-tone c KoHfleHTpaflHeň 92,5-94% and flpyroň - CMecbio npeflBapHTejrbHo oTflyToň khcjio tm-H3 MOHornflpaTHoro a6cop6epa, nPNA κ .KHcaoTe, opomaionieň BTopoň ποτοκ bos-flyxa, floSaBJíHioT BOfly b KOJiHfleCTBe, oBecneqHBaromeM noBbímeHHe TeMnepaTypbi Ha10-80 ° C. ΠρΗ3Η3Ηο H3o6peTeHHeM well peayjibTaTaM 3KcnepTH3bi, ocymecTBaeHHoň FocyflapcTBeH-HbiM Κομητθτομ GCCP well flejraM H3o6peTeHHň h oTKpbiTHň. 3 nepTeaca 251223

Claims (2)

- 5 '- PftBDMfiT of the invention A process for the production of sulfuric acid under elevated pressure comprising compressing air, drying it with sulfuric acid washing, burning sulfur in dried air to sulfur dioxide, oxidizing sulfur dioxide, absorbing sulfur trioxide, and stripping sulfuric acid of dissolved sulfur dioxide, characterized by the fact that, in order to increase the degree of purification of the sulfuric acid production, the compressed air is distributed before drying to at least two circuits, of which one stream is subjected to a pre-stripped sulfuric acid wash at a concentration of 92.5 to 94% and the second stream is subjected to a pre-wash. the acid and acid from the monohydrate absorber, while adding an amount of 10 to 80 ° C temperature to the acid streaming the second air stream. Method according to claim 1, characterized in that three streams are divided into compressed air for the purpose of more complete energy recovery, two streams of which are fed to the process in question, while a third stream of 8 to 12% of the total air flow is used to combust the earth gas and combustion products with a waste gas off-sorption, whereupon the mixture obtained at a temperature of 700-800 ° C is fed to the gas turbine · 251223