Calcium Carbide hmoov siv nyob rau hauv tsib lub lag luam tseem ceeb
Tso lus
Yog vim li cas cov hmoov daim ntawv coj txawv txawv
Sib tsoo calcium carbide multiplies saum npoo raug dej. Cov hmoov uas muaj qhov nruab nrab me me hauv qab 1 hli reacts nyob rau hauv vib nas this nyob rau hauv dej ntau dhau, whereas 50-80 mm lumps siv feeb rau hydrolyse tag nrho. Qhov txiaj ntsig zoo li no yog raws nraim li cov tshuaj reactors thiab txhaj tshuaj lances xav tau, tab sis nws kuj tshem tawm cov npoo kev nyab xeeb tiv thaiv cov dej noo uas cov khoom ntim khaws cia, yog li cov hmoov ntim tau ntim rau hauv lub nruas steel, khaws qhuav thiab noj tam sim. Reactivity kuj ua rau cov hmoov yog qhov kev xaiv raug rau cov txheej txheem uas dosing raug, tsis tonnage throughput, teev tus tsim.
Acetylene Generation thiab Chemical Synthesis
Thawj cov tshuaj tiv thaiv yog CaC2 + 2 H2O muab C2H2 + Ca(OH)2. Hmoov pub cov tshuab hluav taws xob uas muab acetylene rau vinyl chloride monomer nroj tsuag, acetylene dub kab thiab cov tshuaj zoo tshuaj reactors siv txoj kev butynediol rau 1,4-butanediol. Vim hais tias cov reactor feem ntau yog ib qho txuas txuas ntxiv nrog cov dej tswj kev sib ntxiv, cov khoom noj zoo thiab cov carbide ua rau cov roj evolution tus nqi ruaj khov, uas nyob rau hauv lem ua rau downstream compressor thiab purification tsheb ciav hlau nyob rau hauv tsim siab.
Ladle Metallurgy thiab Steel Desulfurization
Calcium carbide yog txhaj rau hauv cov kua hlau ua cov desulfurizing tus neeg sawv cev, reacting nrog yaj sulfur li CaC 2 + S muab CaS + 2 C. Cov hmoov yog nqa mus rau hauv lub yaj los ntawm ib tug lance nrog argon li carrier gas, thiab lub resulting calcium sulfide nplooj nrog slag. Piv nrog cov txiv qaub- cov tshuaj fluorspar sib tov, kev txhaj tshuaj carbide ua rau muaj cov tshuaj sulfur sai dua thiab zam cov fluorine load hauv cov slag. Kev noj tshuaj yog teem los ntawm cov leej faj tuaj thiab qib phiaj xwm; feem ntau cov cua sov ua tiav hauv qab 0.010% S nrog kev noj tsawg dua ib kilogram ib tonne ntawm cov hlau.
Calcium Cyanamide, Fertilizer thiab Dicyandiamide
Cua sov zoo carbide nyob rau hauv ib tug kwj ntawm nitrogen ntawm txog 1000-1100 C converts nws mus rau calcium cyanamide, CaC2 + N2 muab CaCN2 + C. Cov khoom yog siv ncaj qha raws li ib tug nitrogen chiv thiab raws li ib tug intermediate rau dicyandiamide thiab melamine chemistry. Qhov loj me me yog qhov tseem ceeb ntawm no, vim hais tias cov tshuaj tiv thaiv nitriding yog cov khoom siv roj thiab cov khoom siv ntxhib tawm cov cores uas tsis muaj kev cuam tshuam uas txo cov kev hloov pauv nitrogen.
Vuam, txiav thiab Foundry siv
Kev siv vuam thiab txiav kev lag luam siv acetylene ua rau ntawm qhov chaw los ntawm cov hmoov carbide hauv cov tshuab hluav taws xob me. Foundries kuj siv carbide rau kev hloov kho chemistry ntawm ladle kev kho mob thiab rau hauv zos cua sov thaum lub sij hawm kho ua hauj lwm. Hauv cov ntawv thov no tus neeg siv qhov tseem ceeb ntawm qhov pib nrawm- txog qhov zoo carbide muab, thiab feem ntau lees txais qhov qis qis dua rov qab rau lub sijhawm luv dua kom puv roj.
Txiv qaub Los ntawm- khoom rov qab thiab kho dej
Cov calcium hydroxide slurry tshuav tom qab hydrolysis, feem ntau hu ua carbide txiv qaub, yog alkaline thiab finely faib. Nws yog reused rau neutralize acidic khib nyiab, stabilize av thiab txhuam sulfur dioxide los ntawm flue gas. Kev tshuaj xyuas cov slurry rau cov seem uas tsis muaj carbide yog qhov tseem ceeb ua ntej rov siv dua, vim tias cov carbide khaws cia tseem yuav ua kom cov pa taws kub hnyiab hauv lub tank los yog lub qhov dej kaw.
| Kev lag luam | Kev tshwm sim | Hom tso zis |
|---|---|---|
| Tshuaj synthesis | CaC2 + 2 H2O - C2H2 + Ca(OH)2 | Acetylene, VCM, butynediol |
| Hlau desulfurization | CaC2 + S - CaS + 2 C | Hlau hauv qab 0.010% S |
| Nitrogen tshuaj | CaC2 + N2 - CaCN2 + C | Calcium cyanamide |
| Vuam thiab txiav | CaC2 + 2 H2O - C2H2 | Oxy-acetylene roj |
| Kev kho dej | Neutralization nrog Ca (OH) 2 | Carbide txiv qaub, kho effluent |
tuav hmoov zoo
Carbide hmoov sib xyaw ua ke ob qhov kev phom sij: nws tso cov nplaim hluav taws kub hnyiab ntawm kev sib cuag nrog cov av noo lossis cov av noo, thiab raws li cov plua plav zoo nws ntog hauv qhov kev tiv thaiv plua plav tawg raws li GB 15577. Kev teeb tsa yog li siv cov ntsiab lus sib txuas, cov khoom siv hluav taws xob thiab cov khoom sib txuas, tawg venting ntawm silos thiab lim, thiab qhuav, dej, qhov cua thiab lub taub hau. Cov neeg ua haujlwm hnav lub ntsej muag plua plav, tsom iav thiab nplaim taws- cov khaub ncaws tsis zoo, thiab thaj chaw raug kho raws li thaj chaw uas cov chaw taws teeb tswj tau.
Cov lus nug nquag
Q:Cov hmoov puas tuaj yeem hloov cov pob carbide hauv lub tshuab hluav taws xob txheem?
A: Tsuas yog lub tshuab hluav taws xob tsim rau nws. Hmoov reacts sai dua, yog li kev siv dej, cua txias thiab roj tawm -tawm yuav tsum yog qhov loj dua rau qhov siab dua tam sim ntawd, txwv tsis pub muaj kev kub ntxhov tshwm sim.
Q:Cov hmoov ntau npaum li cas yog xav tau los desulfurize steel kub?
A: Kev noj qab haus huv nyob ntawm seb leej twg tuaj thiab cov hom phiaj, tab sis feem ntau cov cua sov ncav cuag qis dua 0.010% S nrog tsawg dua li ib kilogram ntawm carbide ib tonne ntawm cov hlau, txhaj nrog argon los ntawm lance.
Q:Puas yog calcium carbide hmoov tawg ua hmoov av?
A: Nws raug kho raws li cov hluav taws kub kub thiab noo noo-reactive plua plav, yog li cov plua plav tawg tiv thaiv raws li GB 15577 siv rau kev xa khoom, khaws cia thiab lim cov khoom siv.
Q:Yuav ua li cas rau cov txiv qaub residue tom qab acetylene tiam?
A: Nws tuaj yeem rov qab siv tau rau cov dej khib nyiab los yog cov pa roj paug tom qab kuaj xyuas cov carbide seem kom tsis txhob muaj cov acetylene ntxiv hauv cov tso tsheb hlau luam thiab cov kav dej.
Q:Vim li cas particle loj thiaj li tseem ceeb rau txoj kev cyanamide?
A: Cov kauj ruam nitriding yog roj- khoom, yog li cov khoom loj loj tsim cov cores uas tsis muaj kev cuam tshuam thiab txo cov kev hloov pauv nitrogen, uas yog vim li cas thiaj li muaj kev tswj hwm thiab kev faib khoom zoo.
