Hauv Claus sulfur rov ua haujlwm txhawb nqa refineries thiab thee-cov nroj tsuag tshuaj, sulfate-induced deactivation ntawm catalysts yog ib tug ntev heev - lub sij hawm ua hauj lwm teeb meem. Nws ua raws li lub hauv paus tseem ceeb txwv tsis pub lub voj voog kev pabcuam thiab kev ua haujlwm nce ntxiv -thiab- tus nqi tu.
Los ntawm cov txheej txheem - txoj kev xav, taug qab cov pa oxygen hauv chav tsev yog los ntawm ntau qhov chaw ua haujlwm: huab cua tsis sib haum rau cov pa roj av, flange sealing ntawm cov khoom siv, thiab pub- roj muaj pes tsawg leeg hloov pauv raws li kev ua haujlwm tsis sib xws. Cov xwm txheej no tso cai rau me me ntawm O₂ nkag mus rau cov hloov pauv. Cov pa oxygen molecules ua rau sab- cov tshuaj tiv thaiv nrog hauv -situ tsim SO₂ los tsim cov sulfate ruaj khov, uas thaiv cov micropores ntawm cov catalysts thiab txo qhov ua tau zoo ntawm thaj chaw tshwj xeeb. Yog li ntawd, sulfur conversion efficiency yuav poob tsis tu ncua.
Cov kev tiv thaiv ib puag ncig feem ntau suav nrog kev ua kom luv luv hloov pauv hloov pauv thiab hloov pauv huab cua ntau zaus - rau - roj piv tsis tau. Ob qho kev daws teeb meem muaj qhov pom tseeb tsis zoo. Kev kaw tsis tu ncua rau kev hloov pauv catalyst cuam tshuam tag nrho cov nroj tsuag ntau lawm thiab ua rau poob nyiaj txiag hnyav. Cov huab cua me me- qhov ntsuas qhov sib piv tuaj yeem txo qis kev cuam tshuam me me ntawm cov pa oxygen, tab sis tsis tuaj yeem tiv nrog cov haujlwm ua haujlwm uas muaj qhov hloov pauv tsis zoo hauv kev pub noj -gas flow rate thiab H₂S concentration.
Tawm tsam qhov kev lag luam hauv qab no, cov txheej txheem thauj khoom txheej txheej nrog oxygen-scavening tiv thaiv catalysts tau txais kev muaj koob meej zuj zus. Nws yuav tsum tsis muaj reactors ntxiv lossis loj - cov kav xa dej rov qab. Tsuas yog los ntawm optimizing lub catalyst packing configuration nyob rau hauv lub converter muaj peev xwm taug qab cov pa oxygen intercepted ntawm lub hauv paus kom xa ntev -lub sij hawm tiv thaiv rau downstream catalyst txaj.
Cov txheej txheem tseem ceeb nyob hauv theem- kev tiv thaiv kev tiv thaiv: cov khoom siv catalytic nrog ob qho tib si oxygen- kev ua haujlwm pov tseg thiab Claus kev ua haujlwm tau thauj khoom nyob rau sab sauv ntawm lub txaj hloov pauv. Cov txheej txheem roj ntws los ntawm cov txheej txheem tiv thaiv sab saum toj no ua ntej, qhov twg cov pa oxygen yog nyiam noj thiab tshem tawm. Oxygen- cov txheej txheem pub dawb tom qab ntawd ntws mus rau hauv qis dua - txaj catalysts kom ua tiav cov sulfur ruaj khov- cov tshuaj tiv thaiv kev tsim tawm ntawm H₂S thiab SO₂.
Uniform industrial xyaum qhia tau hais tias lub ntim ntim ntawm cov txheej txheem tiv thaiv catalyst yuav tsum tsis pub tsawg tshaj 1/3 ntawm tag nrho lub txaj ntim ntawm lub converter. Cov tshuaj tiv thaiv txaus ntim tau lees tias kev tshem tawm cov kab mob oxygen.
Raws li cov ntaub ntawv kev lag luam, cov txheej txheem pa oxygen -scavenging tiv thaiv loading scheme muab kev txhim kho ruaj khov nyob rau hauv tag nrho cov sulfur conversion efficiency ntawm tag nrho cov chav tsev, tshwj xeeb tshaj yog haum rau sulfur rov qab units nrog loj pub- load fluctuations. Lub caij no, cov tshuaj lom sulfate ntawm qis dua - txaj catalysts tau qeeb qeeb qeeb, ua kom muaj txiaj ntsig zoo rau tag nrho cov catalyst kev pab cuam lub neej thiab txo qis qhov tsis tau npaj tseg.
Cov pa oxygen-scavenging tiv thaiv sulfur- rov qab catalysts tsim thiab tsim los ntawmShandong Xunda TshuajKev lag luamGroup Co., Ltd.tau dhau mus ntev- kev ntsuas kev ua tau zoo hauv ntau lub chaw lag luam thiab tau txais cov lus pom zoo los ntawm cov neeg siv khoom.
