I. Cov kev ua haujlwm nyuaj npaum li cas hauv Coal Chemical Plants?
Qhov kub thiab txias ntawm lub tshuab hluav taws xob hluav taws xob tuaj yeem ncav cuag 1300 degree, thiab qhov kub ntawm qhov nruab nrab ntawm kev sib cuag nrog cov li qub tuaj yeem ncav cuag 300 txog 500 degree. Lub kaw lus siab feem ntau yog 2.0 txog 8.0 MPa lossis siab dua. Txawm tias qhov nyuaj tshaj yog qhov nruab nrab feem ntau muaj siab - cov khoom tawv tawv xws li cov hmoov av thiab cov hmoov tshauv, ua rau muaj kev yaig loj heev; nws kuj muaj cov xov xwm corrosive xws li hydrogen sulfide thiab chloride ions, ua rau muaj kev sib tw ob npaug rau cov ntaub ntawv valve.
II. Dab tsi yog Lub Ntsiab Tshwj Xeeb rau Coal Chemical Plants?
1. Slag Locking Valve (Slag Hopper Valve) - Lub "Gatekeeper" ntawm Slag Discharge System Lub slag locking valve yog ntsia rau ntawm qhov nkag thiab qhov hluav taws xob ntawm cov slag hopper nyob rau hauv qab ntawm lub gasifier. Nws yog lub luag haujlwm rau kev txiav cov slag tsis tu ncua- dej nruab nrab thiab yog qhov ntsuas qhov tseem ceeb rau lub gasifier kom ua tiav cov haujlwm tshem tawm slag thiab xyuas kom ntev - lub sijhawm ua haujlwm tas mus li.
2. Dub... Dej / Grey Dej li qub: "Tshwj xeeb Forces" ntawm peb -Theem Flow hauv Mining thiab Chemical Industries
Cov tshuab dej dub yog cov haujlwm hnyav tshaj plaws hauv kev lag luam thee tshuaj. Cov dej dub nruab nrab tsis yog tsuas yog muaj cov khoom corrosive xws li hydrogen sulfide thiab chloride ions, tab sis kuj muaj ntau cov khoom siv. Valves yuav tsum tiv taus kev yaig loj heev tshwm sim los ntawm scouring ntawm cov khoom ntawm cov dej ntws siab. Qhov sib txawv ntawm qhov sib txawv ntawm cov dej dub regulating valve tuaj yeem ua rau muaj teeb meem loj thiab cavitation, ua rau muaj kev puas tsuaj loj rau lub valve sab hauv. Yog li ntawd, kev lag luam feem ntau siv duplex stainless hlau ua cov khoom siv lub cev, nrog chrome-plated hardened flow channels thiab cov khoom sintered tungsten carbide thiab lwm yam nyuaj alloys rau cov khoom siv sab hauv kom ntseeg tau tias corrosion kuj thiab yaig kuj.
3. Oxygen li qub - "Cov Neeg Saib Xyuas" ntawm Kev Nyab Xeeb Ua Ntej
Oxygen regulating thiab kaw-off li qub yog siv dav hauv cov txheej txheem thee gasification thiab cov cua sib cais, ua lub luag haujlwm tseem ceeb hauv kev tswj kom meej thiab kaw nrawm- tawm hauv cov pa xa hluav taws xob. Vim tias cov pa oxygen yog cov nplaim taws heev... Kev sib tsoo thiab tawg ua rau muaj kev nyab xeeb siab heev rau cov pa valve. Lawv yuav tsum tau ua cov roj nruj heev-kev kho dawb degreasing thiab muaj hluav taws kub-tsim qauv, feem ntau yuav tsum tau SIL (Silicone Inertia) ntawv pov thawj.
4. Pulverized Coal / Coal Slurry Valve - Tus "Grain Supply Officer" ntawm lub Feed System
Hauv cov txheej txheem pulverized thee gasification, kev xa khoom thiab kev tswj hwm ntawm pulverized thee ncaj qha cuam tshuam rau kev pib- nce thiab kev ua haujlwm ntawm chav tsev gasification. Cov li qub no yuav tsum tiv taus qhov muaj zog erosion ntawm pulverized thee particles, feem ntau siv siab - zog, corrosion- resistant tempered steel thiab siv ib tug tshwj xeeb hlau sealing qauv. Disc li qub tau nce dav siv hauv pulverized thee conveying.
5. Syngas Valve – Lub "ua pa Valve" ntawm lub Gasifier
Triple-eccentric hlau- kaw npauj npaim li qub feem ntau yog siv los tswj tus nqi ntws ntawm syngas hauv ntauwd scrubbing, cuam tshuam qhov kev xa tawm ntawm cov txheej txheem roj mus rau chav tsev gasification thiab ruaj khov ntawm cov txheej txheem hloov dua siab tshiab. Ib txhij, syngas muaj corrosive Cheebtsam xws li plua plav thiab H2S, ua rau muaj kev sib tw tseem ceeb rau lub valve kev ua haujlwm. Kev kub siab ua haujlwm, kev ua haujlwm tsis zoo, thiab thermal shock kuj yog qhov yuav tsum tau muaj zog sib npaug.
III. Xaiv cov ntsiab lus thiab ceev faj
Hauv kev xaiv li qub rau kev siv tshuaj lom neeg, cov ntsiab lus hauv qab no yog qhov tseem ceeb tshwj xeeb:
* Kev xaiv cov khoom siv: Cov khoom siv lub cev valve yuav tsum raug xaiv kom tsim nyog raws li cov yam ntxwv corrosive ntawm nruab nrab. Piv txwv li, duplex stainless hlau yog siv rau kev siv dej dub. Internal valve Cheebtsam yuav tsum tau ua los ntawm ib tug nyuaj alloys los yog undergo hardening kev kho mob, xws li Stellite alloy overlay vuam los yog ib tug sintered tungsten carbide.
* Cov qauv tsim: Ib qho qauv tsim uas tsis muaj cov kaum sab xis tuag thiab lub vojvoog loj arc yuav tsum tau txais kev pom zoo kom tsis txhob muaj kev sib txuam thiab txhaws ntawm cov khoom siv xov xwm. Lub qia valve yuav tsum thickened thiab cov qauv kev sib txuas optimized los txhim kho stability.
* Sealing thiab Anti-clogging: Bearings yuav tsum xyuas kom meej sealing kev ua tau zoo los tiv thaiv cov hmoov av los ntawm kev nkag mus thiab ua rau hnav. Siab - ceev steel yog pom zoo rau lub valve lub rooj zaum cov khoom siv caij nplooj ntoos hlav.
* Daim ntawv pov thawj kev nyab xeeb: Li qub rau kev ua haujlwm tshwj xeeb xws li cov pa oxygen yuav tsum tau txais cov ntawv pov thawj kev nyab xeeb (xws li qib SIL) thiab kev kho degreasing nruj.
