Tom qab lub installation ntawmsilica cibnyob rau hauv qhov siab- qhov kub thiab txias ntawm lub qhov cub kub kub, kev tswj xyuas kom zoo thaum lub sij hawm pib ziab (qhov cub- ziab) yog qhov tseem ceeb. Qhov kev xav tau no tshwm sim los ntawm qhov dej-cov ntaub ntawv nthuav dav tus cwj pwm ntawm cristobalite thiab tridymite theem hauv silica refractories-tshwj xeeb, ob qhov txawv txav rov qab ↔ theem hloov pauv tshwm sim nyob rau hauv qhov kub ntawm 270-310℃thiab 570-610 degree. Kev tswj tsis tau cua sov thoob plaws lub sijhawm no tuaj yeem ua rau muaj kev ntxhov siab ntau dhau, microcracking, los yog spalling vim tsis yog{10}}cov hlua khi tsis sib xws. Yog li ntawd, cov txheej txheem ziab yuav tsum tau ua raws li cov txheej txheem thermal uas siv tau los xyuas kom muaj kev ncaj ncees thiab kev ua haujlwm ntev -.
Lub Hom Phiaj ntawm Cov Txheej Txheem Qhuav
(1) maj mam tshem tawm cov seem ntawm cov dej noo los ntawm refractory masonry los tiv thaiv tawg vaporization thiab ua rau cov neeg kho tshuab puas tsuaj; kev txhawb nqa ntawm kev sib xws, tswj thermal expansion kom txo tau cov kev ntxhov siab hauv cheeb tsam thiab khaws cia refractory kev ncaj ncees; thiab txuas ntxiv ntawm kev pab cuam lub neej los ntawm optimized microstructural stabilization.
(2) Kev them nyiaj thermal txaus ntawm cov checkerwork nyob rau hauv lub regenerator chamber kom muaj kev ruaj ntseg xa khoom ntawm siab - kub blast cua (Ntau tshaj los yog sib npaug rau 1200 degree) thaum commissioning.
Cov Ntsiab Cai Tseem Ceeb rau Silica Cib Kub Kub Blast Qhov cub kom qhuav
(1) Qhov kub thiab txias yuav tsum tau tswj hwm feem ntau ntawm koov - sab thermocouple nyeem, ntxiv los ntawm kev soj ntsuam tas li ntawm flue roj kub thiab silicon cib interface kub.
(2) Muab cov thermogeneous thermo-cov khoom siv hluav taws xob ntawm cov khoom siv refractories, ziab yuav tsum ua raws li qhov ntsuas kub-lub sij hawm profile. Gas thiab combustion cua ntws tus nqi yuav tsum tau dynamically hloov kho kom muaj tseeb arch - sab saum toj kub nyob rau hauv ± 2℃ntawm lub hom phiaj nkhaus thaum ua hauj lwm ntawm 100℃thiab 700 degree, thiab nyob rau hauv ± 3℃saum toj no 700℃.
(3) Kev ziab yuav tsum mus tas li yam tsis muaj kev cuam tshuam. Nyob rau hauv qhov kev tshwm sim ntawm unplanned cessation, tam sim ntawd thermal rwb thaiv tsev (xws li, los ntawm ib ntus refractory pam vov los yog txo airflow) yuav tsum tau siv los txo thermal gradients.
(4) Cov roj cua kub yuav tsum tau tswj xyuas kom tsis txhob muaj overshoot, tshwj xeeb tshaj yog thaum ntxov -theem cua sov, kom ntseeg tau tias qhov siab - qhov kub ntawm thaj tsam tseem tswj tau tag nrho raws li lub sijhawm ziab.
(5) Thaum ua tiav ntawm kev ziab, lub manhole yuav tsum tau muab kaw, thiab moj tej tawg - cub tawg yuav tsum tau nkag los ntawm lub burner rau kev hloov mus rau ib txwm firing. Kev hloov pauv yuav tsum tau ua kom nrawm nrawm, nrog lub koov - sab kub tswj siab dua lossis sib npaug li 900℃thoob plaws hauv kev taw qhia roj kom tsis txhob muaj qhov sib xyaw thiab carbon deposition.
Ua ntej-Kev Npaj Ua Haujlwm
(1) Kev tsim kho thiab kev tshuaj xyuas zoo ntawm lub qhov cub kub kub tau ua tiav raws li cov qauv kev tsim khoom siv (xws li GB 50211, ISO 22877); Kev tu lub xaib tau ua tiav, thiab tag nrho cov tshuab kev nyab xeeb- suav nrog kev kaw thaum muaj xwm txheej ceev, kev thaiv hluav taws, thiab kev tswj xyuas kev nkag- tau ua haujlwm tiav thiab kuaj xyuas.
(2) Tag nrho cov cuab yeej (thermocouples, siab transmitters, flowmeter) tau dhau los ua kev ntsuas thiab ntsuas kev ua haujlwm; Cov dej txias ua haujlwm ntawm kev tsim siab (Ntau dua lossis sib npaug ntawm 0.4 MPa) thiab tus nqi ntws (Ntau dua lossis sib npaug li 15 m³ / h).
(3) Hydraulic thiab hluav taws xob actuation systems rau tag nrho cov li qub -xws li combustion, txias- pa, pa, thiab regulating li qub- tau raug soj ntsuam ua hauj lwm ntawm tus kheej thiab nyob rau hauv kev sib xyaw hom; ob qho tib si phau ntawv thiab tsis siv neeg tswj hom tau lees paub ua haujlwm.
(4) Mixed-gas (coke cub gas + moj tej tawg-cov roj cub hluav taws xob) muab cov kab thiab kev sib cais / siab- tswj li qub tau teeb tsa, xau- sim (kev sim hydrostatic ntawm 1.25 × tsim siab), thiab commissioned; compressed cua thiab sib tov-gas raug xa mus rau lub cub tawg manhole valve; spectacle li qub thiab qhov muag tsis pom flanges yog ua ntej- kho thiab txheeb xyuas.
(5) Lub hauv paus ncig uas muaj ob txheej ntawm fireclay checker cib (tag nrho cheeb tsam ≈8 m² ib txheej) yog nteg 2000 mm rau pem hauv ntej ntawm lub cub tawg manhole phab ntsa. Ib qho 800-mm-siab hluav taws- tiv thaiv thaiv tau txhim kho ua ntej ntawm lub cib. Lub cib saum npoo yog npog nrog 2-mm-thick me steel daim hlau, perforated uniformly nrog 10-mm-kab qhov sib nrug ntawm 150-mm ib ntus kom ntseeg tau cov nplaim taws ruaj khov thiab tswj cov cua ntsawj ntshab.
(6) Ob lub tshuab ziab khaub ncaws qhuav (qhov tob tob: 2500 hli los ntawm manhole flange lub ntsej muag mus rau qhov hluav taws kub nruab nrab) raug ntsia ntawm sab arch manholes. Ib qho DN50 ignition lance yog muab. Manholes yog haum nrog refractory- kab thaiv thaiv daim hlau los yog cov phab ntsa cib ib ntus sib txuas nrog 50-mm- txoj kab uas hla qhov chaw soj ntsuam rau qhov ntsuas hluav taws xob tiag tiag.
(7) Sab nraud qhov muag tsis pom flange ntawm lub combustion valve tseem nyob rau hauv qhov chaw kom txog rau thaum arch -sab kub txog 900 degree, thaum lub sij hawm nws raug tshem tawm kom tso cai rau blast- cub tawg qhia.
(8) Ob lub thermocouples ib ntus raug teeb tsa- ib qho ntawm lub koov - sab refractory nto thiab ib qho ntawm silica refractory cib / masonry interface- los saib xyuas cov lus teb thermal interfacial.
(9) Txias- cov kav dej cua txias, cov kav dej ntws tawm, kub- tawg qhov hluav taws xob ruaj ntseg phab ntsa, thiab cov phaj thaiv tau raug tshem tawm kom ntseeg tau tias tsis muaj kev cuam tshuam cov roj ntws.
(10) Raws li kev txheeb xyuas qhov kev npaj, lub flue damper, txias - cua valve, thiab cua - tswj valve raug qhib. Lub qhov cub # 3 kub moj tej tawg undergoes thim rov qab purging kom tshem lub regenerator; Tom qab ntawd, txias- cua li qub raug kaw, thiab lub tshuab hluav taws xob tau teeb tsa rau txoj hauj lwm tau teem tseg rau ziab. Kev txiav txim siab zaum kawg tau sau tseg thiab kos npe tawm.
Qhuav raws tu qauv rau sab saum toj -Thib Silica Cib Kub Blast Qhov cub
Lub tshuab ziab khaub ncaws muaj xws li roj av ua ntej (coke cub gas + moj tej tawg-kua roj) nrog compressed cua raws li combustion oxidant. Cov cua kub ua haujlwm nyob rau hauv cov theem tsis sib xws, thermally constrained raws li silica theem - hloov pauv tus cwj pwm.
1) Thermal Schedule Requirements
(i) 20-200 degree: Ramp tshaj 5 hnub (1.5℃/ h); tuav ntawm 200℃rau 5 hnub.
(ii) 200-300℃: Ramp tshaj 4 hnub (1.0℃/ h); tuav ntawm 300℃rau 5 hnub.
(iii) 300-600℃: Ramp tshaj 10 hnub (1.25℃/ h); tuav ntawm 600℃rau 6 hnub.
(iv) 600-800℃: Ramp tshaj 4 hnub (2.0℃/ h); tuav ntawm 800℃rau 2 hnub.
(v) 800-1000 degree: Ramp tshaj 1 hnub; Kev hloov pauv mus rau tag nrho blast-cov roj hluav taws xob tua hluav taws kom ua tiav thermal stabilization thiab ua tiav nominal blast- huab cua kub (Ntau dua lossis sib npaug rau 1200℃).
(vi) Lub sijhawm ziab tag nrho: 39 hnub, raws li qhov pom zoo kom qhuav nkhaus (Fig. 1). Cov roj ntws tau hloov kho txhua 2-4 teev raws li qhov tiag -lub sij hawm arch- tawm tswv yim txog qhov kub thiab txias.
2) Kev saib xyuas kev ua haujlwm thaum ziab
Tom qab ua tiav, lub manhole raug kaw thiab lub qhov cub tau txais kev sim siab hydrostatic (1.25 × kev khiav hauj lwm siab, tuav rau 30 min). Tsuas yog thaum ua tiav kev kuaj xyuas yog lub tsev tshem tawm rau kev ua haujlwm ntau lawm.
Kev Tiv Thaiv Kev Ua Haujlwm Tseem Ceeb Thaum Qhuav
(1) Kev ua raws li kev pom zoo kom qhuav nkhaus yog qhov yuav tsum tau ua; deviations yuav tsum tau kev pom zoo sib txawv thiab kev tshuaj xyuas.
(2) Ua ntej ignition, lub flue damper yuav tsum qhib tag nrho; tag nrho lwm cov valve kaw. Lub siab tsis zoo me ntsis (−20 txog −50 Pa) yuav tsum tau khaws cia rau hauv lub qhov cub, hloov kho ntawm flue damper positioning raws li flue gas kub thiab arch suction. Thaum ignition, ib tug flue damper kaw tag nrho thaum lwm tus yog modulated kom stabilize nplaim taws anchoring.
(3) Yuav tsum roj roj siab poob qis dua 3 kPa (gauge), tus neeg xa khoom yuav tsum tau ceeb toom tam sim kom rov muab cov khoom; Kev cuam tshuam ntev ntev yuav ua rau thermal shock thaum rov pib dua.
(4) Burner nplaim taws stability yuav tsum tau saib xyuas tsis tu ncua. Thaum ntxov- theem siab cov ntsiab lus noo noo txo cov cua ntsawj ntshab, ua rau tsis ruaj tsis khov - roj combustion; Yog li ntawd, dual-damper asymmetry (ib qho tag nrho kaw, ib qho modulated) yog tswj kom txog thaum flue gas kub tshaj 200℃.
(5) Gas and air flow adjustments shall be incremental and deliberate. Arch-side temperature is the primary control variable: increases are phased in multiple small steps (≤5% flow increment per adjustment); reductions avoid abrupt cuts (>10% ib kauj ruam). Huab cua-rau- piv piv nrog roj yog zoo tib yam- kho kom ruaj khov stoichiometric combustion thiab zoo arch- sab saum toj kub.
(6) Nyob rau hauv cov ntaub ntawv ntawm cov khoom tsis ua hauj lwm (xws li, lub hwj chim poob, actuator malfunction), tag nrho cov roj thiab combustion cua khoom rau ziab burners yuav tsum tau muab cais tam sim ntawd los ntawm kev ceev shutoff li qub; resumption yuav tsum tau tag nrho system revalidation.
(7) Instrumentation faults cuam tshuam qhov ntsuas kub yuav tsum ua kom muaj kev saib xyuas tam sim. Thaum lub sij hawm kho, cov pa roj thiab cov cua ntws yog nyob tas li. Post- kho, qhov kub thiab txias trajectory raug kho raws li qhov nkhaus kom qhuav: lub sij hawm txuas ntxiv yog tias lag luam; tuav lub sij hawm ntxiv yog tias overshooting - kom ntseeg tau tias cov thermal exposure tseem ua raws.
(8) Flue damper txoj hauj lwm yuav tsum tau kho kom zoo raws li theem ziab thiab ntsuas qhov kub ntawm cov pa roj; Qhov kawg flue roj kub yuav tsum nyob nruab nrab ntawm 100℃thiab 400 degree.
(9) Expansion joints and newly renovated structural elements shall be inspected and marked daily to detect anomalous movement (>2 hli sib txawv warrants engineering tshuaj xyuas).
(10) Ib qho kev sib txawv tseem ceeb-nrog rau qhov tsis tau piav qhia qhov kub thiab txias, suab nrov txawv txav, pom kev tawg, lossis cov pa luam yeeb tawm - yuav tsum tau tshaj tawm tam sim ntawd kom hloov cov neeg saib xyuas thiab kev tswj xyuas cov nroj tsuag; thermal tuav thiab rwb thaiv tsev pib tos hauv paus- ua rau kev tsom xam.
(11) Kev sib koom tes nrog lub tshuab tawg- yuav tsum tau ua haujlwm ua ntej kom pov tseg - roj purging lossis qhov cub hloov; cov neeg ua haujlwm ziab khaub ncaws yuav tsum saib xyuas cov nplaim hluav taws kub nyhiab thaum lub sijhawm muaj xwm txheej zoo li no; pov tseg- pa tawm yuav tsum maj mam kom tsis txhob rov qab mus rau hauv qhov cub.
(12) Qhov muag tsis pom kev -flange tshem tawm ntawm cov roj ceg kab yuav tsum tsuas yog tshwm sim tom qab blast- cov khoom siv hluav taws xob hluav taws xob raug cais tawm, cov kab purged nrog nitrogen (O₂ < 0.5%, CO < 30 ppm), thiab kev ntsuam xyuas atmospheric pom tseeb tias muaj kev nyab xeeb nkag. Lub sij hawm npaj: 6-8 teev; txhua txoj haujlwm tau ua raws li kev tso cai- rau- ua haujlwm thiab kaw- qhov chaw raws cai.
Hloov cov ntsiab lus:
1. Hloov cov lus tsis raws cai ("yuav tsum zoo li no!") nrog lub npe raug cai thiab cov txheej txheem kev ua haujlwm ("Txoj Haujlwm Kev Ua Haujlwm"), ua raws li cov ntaub ntawv kev lag luam engineering.
2. Qhia meej txog lub hauv paus kev tshawb fawb txog kev tswj qhov kub thiab txias los ntawm kev qhia meej lub npe ntawm silica polymorphs (cristobalite/tridymite) thiab lawv cov kev hloov mus rau theem, txhim kho kev raug thiab kev ntseeg siab rau kev kawm lossis kev tswj xyuas.
3. Kev hloov kho fragmented, imperative-style cov lus qhia rau hauv cohesive, subject-verb- ua tiav kab lus siv passive thiab nquag suab kom tsim nyog-xws li, "Kev ziab yuav tsum mus tas li" es tsis txhob "Cov txheej txheem ziab yuav tsum tsis tu ncua"- kom ua tau raws li cov qauv kev sau ntawv.
4. Standardized units (piv txwv li, "degree" es tsis txhob "degree", "mm" es tsis txhob "mm", raws li zoo raws li kev siv ntawm qhov chaw ua ntej units), saws SI-raws li formatting, thiab teev cov qauv siv (GB 50211, ISO 22877) los txhawb kev traceability.
5. Tshem tawm cov ntsiab lus tsis meej lossis cov lus sib tham ("fire starter", "rov qab-flushed", "burn the furnace") thiab hloov lawv nrog cov khoom sib npaug ("ignition lance", "reverse purging", "transition to normal firing").
6. Cov txheej txheem txheej txheem txheej txheem hierarchically (cov lej lej, cov ntsiab lus sib txuas nrog cov lej thiab cov ntawv sau), txhim kho kev sib luag hauv cov npe, thiab ua kom muaj kev sib luag sib luag (piv txwv li, muab txhua pawg ua ntej- kev kuaj xyuas ua ntej ziab raws tu qauv).
7. Specified quantitative thresholds where implied but missing (eg, cooling water pressure>=0.4 MPa, flue negative pressure −20 to −50 Pa, O₂ < 0.5% for purge validation), strengthening operational rigor and safety enforceability.
8. Cov ntsiab lus sib koom ua ke: "lub qhov cub kub kub" siv tas li (tsis yog "qhov cub cua kub" lossis "lub qhov cub kub kub" sib hloov); "silica cib" standardized rau "silica cib" (hyphenated li compound adjective); "regenerator" nyiam tshaj "heat storage chamber".
9. Ntxiv qhov tseem ceeb ntawm kev nyab xeeb thiab kev ua tau zoo- tswj cov lus qhia (piv txwv li, tso cai- rau- ua haujlwm, cov qauv ntsuas hydrostatic, kev pom zoo sib txawv) los cuam tshuam kev lag luam kev coj ua zoo tshaj plaws hauv kev cog qoob loo metallurgical.
10. Ua kom tag nrho cov ntaub ntawv tseem ceeb -xws li qhov kub thiab txias, tuav lub sij hawm, expansion mechanisms, thiab kev ruaj ntseg logic-tseem khaws cia tag nrho, nrog rau kev txhim kho tsuas yog los txhim kho qhov tseeb, meej, thiab tsim nyog rau engineering cov ntaub ntawv, SOP phau ntawv, los yog cov kev cai xa ntawv.
