Dɛn Nti na Activated Alumina Ho Hia Wɔ Claus Sulphur Recovery Adeyɛ Mu?
Alumina catalysts a wɔde di dwuma wɔ Claus Sulphur Recovery Units mu no gyina hɔ ma catalysts kuw a ɛyɛ tete de na wɔde di dwuma kɛse ma saa dwumadie yi. Alumina a wɔde ayɛ adwuma a ɛho tew a ɛkorɔn -ma ɛma hydrogen sulfide (H.) ntam adeyɛ no yɛ kɛse2S) ne sulfur dioxide (SO.) ne aduru a wɔfrɛ no sulphur dioxide (SO2) de ayɛ elemental sulfur (S), bere a bere koro no ara ɛma sulfur-a ɛwɔ -nneɛma te sɛ carbonyl sulfide (COS) ne carbon disulfide (CS) no nsuo mu nsuo mu2), na ɛnam so ma sulfur a wɔsan nya no yɛ kɛse.
Dɛn Ne Claus Process Sulphur a Wɔsan Yɛ?
Claus nhyehyɛe no yɛ mfiridwuma a wɔde di dwuma kɛse a wɔde san nya sulfur wɔ nnɛyi nnwuma mu no mu biako. Wɔde di dwuma titiriw de dan acidic gas a H wom2S kɔ elemental S mu, bere a ɛtew nneɛma a atwa yɛn ho ahyia a efĩ a sulfides a wɔtow gu tẽẽ de ba no ase. Claus kwan so sulfur a wɔsan nya no fa mfiridwuma tebea ahorow a ɛma sulfur-a acid mframa pii ba, te sɛ:
* Nneɛma a wɔyɛ ngo: sɛ wɔbɛsan anya sulfur afi acid mframa a wɔyɛ bere a wɔreyɛ ngo no mu;
* Abɔde mu mframa a wɔde yɛ adwuma: de sa acid mframa a ɛba bere a wɔde abɔde mu mframa de sulfurization gu mu no yare;
* Fango mu nnuruyɛ adwuma: sɛ wɔbɛsa sulfur-a acid mframa a ɛba bere a fango mu mframa ne syngas tew ho;
* Coking adwumayɛ: sɛ wɔbɛdan hydrogen sulfide a ɛwɔ coke fononoo mframa mu ayɛ no elemental sulfur;
* Petrochemical adwumayɛ: sɛ wobenya sulfur afi H2S-a ɛwɔ process gas ahorow mu;
* Sulfide-nnwuma a ɛfa ho: sɛ wɔde bedi sulfur-a mframa fĩ a efi sulphuric acid, viscose, ne nnuru nhama mu ho dwuma.
Ɛhe na Alumina Catalyst Sii Wɔ Claus Adeyɛ Mu?
Claus kwan so sulfur a wɔsan nya no fã a wɔtaa yɛ no yɛ acid gas feed system, acid gas fononoo, waste heat boiler, sulphur condensers, Claus catalytic reactors, ne nsu sulfur collection pit anaa sulfur seal tank.
Claus adeyɛ no mu adeyɛ titiriw ne adeyɛ a ɛda H ntam2S ne SO2sɛnea ɛbɛyɛ a wobenya elemental sulphur. Wɔ nneyɛe mu no, H. no fã bi2Wɔdi kan hyew S de yɛ SO2; SO a efi mu ba no2afei ɛne H a aka no yɛ n’ade2S wɔ catalyst-the Claus reaction-ma ɛyɛ sulfur vapor, a ɛma nsu sulfur bere a ayɛ nwini no.
Enti,Claus alumina a ɛma nneɛma yɛ kɛsewɔde di dwuma titiriw wɔ saa catalytic reactors yi mu. Na standard industrial Claus catalyst mpa no taa de activated alumina di dwuma.
Dwumadie a Ɛyɛ Activated Alumina Catalyst Wɔ Claus Adeyɛ mu
Catalyzing Claus adeyɛ titiriw no. Eyi ne dwumadi a ɛho hia sen biara! Sɛ wonni catalyst a, reaction rate a ɛda H2S ne SO2yɛ brɛoo kakra; nanso, alumina a wɔayɛ no adwuma ma wonya mmeae pii a ɛyɛ adwuma wɔ soro, na ɛma adeyɛ no tumi bɛn nea ɛkari pɛ ntɛmntɛm wɔ ɔhyew a mfiridwuma gye tom mu.
Catalysing COS nsuo mu nsuo a ɛtwetwe. Nea ɛka H2S, acid gas taa kura CO mu2, hydrocarbons, ne organic sulfides kakraa bi. Wɔ thermal reaction furnace mu no, sulfur-a ɛwɔ organic compounds bi na ɛyɛ COS ne CS2. Alumina a wɔayɛ no adwuma no ma sulfur a ɛwɔ COS mu no san dan H2S, a ɛma no kwan ma ɛhyɛn Claus reaction system no mu; eyi ho hia kɛse na ama sulphur a wɔsan nya nyinaa dodow akɔ soro.
Catalyzing CS2nsu mu a wɔde hyɛ mu. CS2yɛ ade a ɛba a ɛhaw adwene titiriw wɔ Claus nhyehyɛe no mu. Nsu a wɔde hyɛ CS mu2dan sulfur a ɛwɔ molecule no mu no san kɔ H2S, a ɛma otumi de ne ho hyɛ Claus adeyɛ no mu akyiri yi; eyi yɛ adwuma titiriw foforo a alumina a wɔde yɛ nneɛma a ɛma nneɛma yɛ adwuma yɛ.
Dɛn Nti na Activated Alumina Ho Hia Wɔ Claus Sulphur a Wɔsan Nya Mu?
Wɔ alumina-based Claus catalysts ho no, ade titiriw no nyɛ sɛ wɔbɛma Al no ayɛ kɛse kɛkɛ2O3emu nsɛm. Mmom no, ɛhwehwɛ sɛ wɔyɛ ɔfasu pɔtee bi, pore nhyehyɛe, ɔfasu dwumadi, ne sɛnea wɔko tia deactivation no yiye.
Sɛ yɛhwɛ sɛnea H molecule akɛse gu ahorow no a2S, SO, na wɔkyerɛwee2, COS, CS, ne wɔn a wɔka ho2, ne H2O-na nokwasɛm a ɛyɛ sɛ Claus adeyɛ no fa mframa a ɛwɔ afã horow pii a ɛtrɛw wɔ catalyst particles-pore size management no mu ho hia yiye. Sɛ pores sua dodo a, reactant diffusion siw kwan na emu diffusion resistance kɔ soro, na ɛmma wontumi mfa mmeae a ɛyɛ adwuma wɔ catalyst no mu no nni dwuma koraa. Nea ɛne eyi bɔ abira no, sɛ ntini a ɛwɔ nipadua no mu no sõ dodo a, mmeae a ɛyɛ adwuma no so tew. Ne saa nti, mfiridwuma mu Claus catalysts hwehwɛ sɛ wɔayɛ no pɔtee sɛ wɔbɛkyekyɛ pore size, na activated alumina betumi ama wɔanya surface su ne pore structures a ɛho hia na ama wɔadi saa ahwehwɛde ahorow yi ho dwuma.
Sinmat Nnuruyɛfode ahotew a ɛkorɔn-a wɔahyɛ da ayɛ maalumina a wɔde yɛ adwumatitiriw ma Claus nhyehyɛe sulfur a wɔsan nya. Sɛ wopɛ nsɛm pii a, yɛsrɛ wo hwɛ...alumina a wɔde ayɛ adwumanneɛma a wɔyɛ no fã.
