Kev puas tsuaj tshwm sim nyob rau hauv thaj chaw goaf tseem muaj kev txhawj xeeb txog kev nyab xeeb loj hauv kev lag luam thee mining. Raws li cov mining qhov tob zuj zus thiab kev siv zog nce ntxiv, qhov kev xav tau ntawm cov thee seams rau nws tus kheej - ignite ua ntau pronounced. Ntawm ntau yam kev tiv thaiv hluav taws xob muaj, kev txhaj tshuaj nitrogen tau txais kev lees paub thoob plaws vim nws qhov kev ua tau zoo inerting thiab tswj cov nqi khiav lag luam. Tsiv cov khoom siv nitrogen tsim los ntawm qhov chaw mus rau hauv av-tshwj xeeb, kev siv cov tshuab hluav taws xob nitrogen hauv cov thee mines- tau nce zuj zus los ntawm kev ua haujlwm nrhiav kev daws teeb meem ntau dua.
Cov Ntsiab Cai ntawm Cov Khoom Siv thiab Cov Txheej Txheem Txheej Txheem
Lub tshuab hluav taws xob hauv av hauv av yog tus kheej - muaj qhov system muaj peev xwm sib cais nitrogen los ntawm huab cua compressed thiab xa siab - purity nitrogen ncaj qha rau ntawm qhov chaw ua haujlwm. Feem ntau cov chaw txawb tam sim no ntsib kev tawg ntawm cov thee mine- cov ntaub ntawv pov thawj uas yuav tsum tau siv lub siab Swing Adsorption (PSA) nrog cov pa roj carbon molecular sieves. Lub hauv paus txheej txheem yog ncaj nraim: nyob rau hauv siab siab, cov khoom siv molecular sieve adsorbs oxygen molecules sai dua nitrogen. Los ntawm alternating pressurization (adsorption) thiab depressurization (desorption), lub kaw lus tsis tu ncua ua nitrogen nrog purity zoo ib yam.
Kev teeb tsa ua tiav feem ntau suav nrog peb lub hauv paus tseem ceeb: mining -lub luag haujlwm tawg- pov thawj cua compressor, compressed cua pretreatment unit, thiab nitrogen tiam module. Cov no yog mounted rau flatbed mine tsheb, tso cai rau tag nrho cov sib dhos yuav tsum towed raws underground txoj kev. Qhov kev teeb tsa no tso cai rau qhov chaw nyob ze ze rau lub goaf lossis lub hom phiaj inerting cheeb tsam, txo cov nitrogen xa tawm deb ntawm qhov chaw.
Vim li cas thiaj xaiv Underground Mobile Nitrogen Generation
Txoj hauv kev zoo tshaj plaws - tsim cov nitrogen rau ntawm qhov chaw thiab tso cov boreholes ntev los yog shafts - xa cov ntim loj tab sis qhia txog qhov teeb meem loj: kev siv peev nyiaj ntau rau cov kav dej sib txuas, kev saib xyuas ntau yam, thiab kev poob siab los yog kev xau raws txoj kev txuas ntxiv. Thaum lub ntsej muag ua haujlwm tau nce mus sai los yog cov mining panels hloov ntau zaus, cov txheej txheem saum npoo ruaj khov feem ntau tsis muaj qhov nrawm kom nrawm.
Mobile underground systems hais txog cov kev txwv no nrog qhov zoo sib xws:
- Cov lus teb nrawm nrawm: Nrog lub tshuab hluav taws xob nyob ze, nitrogen nce mus txog lub goaf yuav luag tam sim tom qab kev tsim khoom, muab sijhawm rau inerting -tshwj xeeb tshaj yog muaj txiaj ntsig rau cov thee seams nrog luv luv spontaneous combustion lub sij hawm.
- Kev tshem tawm cov raj xa dej siab nitrogen: Lub kaw lus tuaj yeem siv cov mine compressed cua kab uas twb muaj lawm lossis kev sib txuas ib ntus luv luv, txo cov nqi vaj tsev.
- Kev hloov pauv yooj yim: Cov cuab yeej tuaj yeem rub tau raws li lub ntsej muag ua haujlwm nce ntxiv, tso cai rau ib chav ua haujlwm rau ntau lub ntsej muag ntawm nws lub neej kev pabcuam, txhim kho kev siv peev.
Kev txiav txim siab tseem ceeb rau daim ntawv thov teb
Kev ua tau zoo ntawm nitrogen-raws li kev tiv thaiv hluav taws kub hinges ntawm kev tswj cov pa oxygen hauv thaj chaw goaf oxidation tsis tu ncua hauv qab theem tseem ceeb rau cov thee tus kheej- cua sov. Tuam Tshoj Txoj Cai Coal Mine Safety Regulations tswj kom muaj nitrogen purity tsis tsawg dua 97% rau kev txhaj tshuaj. Hauv kev xyaum, ntau yam kev ua haujlwm yuav tsum tau ua tib zoo saib xyuas:
- Kev txhaj tshuaj: Rau kev tua hluav taws, kev txhaj tshuaj nitrogen txuas ntxiv yog pom zoo kom tsim kom muaj qhov chaw tsis zoo. Rau kev tiv thaiv hluav taws tsis tu ncua, kev txhaj tshuaj tsis tu ncua feem ntau siv tau ntau dua - ncua kev khiav tawm thaum cov pa oxygen poob qis dua qhov kev nyab xeeb thiab rov pib dua thaum lawv nce rov qab rau qib ceeb toom. Txoj kev no sib npaug tiv thaiv kev tiv thaiv nrog kev siv zog.
- Kev txhaj tshuaj taw tes: Lub qhov hluav taws xob tso tawm nitrogen yuav tsum tau muab tso rau ntawm qhov nqus ntawm cov goaf thiab txuas ntxiv mus faus rau ntawm qhov kev npaj ua ntu zus raws li lub ntsej muag nce mus, kom ntseeg tau tias cov kwj nitrogen zoo ua rau thaj tsam oxidation. Qhov sib nrug ntawm cov ntsiab lus txhaj tshuaj yuav tsum tau txiav txim siab raws li "peb-zone" saib xyuas cov ntaub ntawv (qhov chaw tshav kub kub, oxidation zone, thiab asphyxiation zone).
- Flow tus nqi thiab kev soj ntsuam kev nyab xeeb: Qhov yuav tsum tau muaj nitrogen txhaj tshuaj yuav tsum tau xam raws li goaf cua to thiab pib oxygen concentration. Qhov tseem ceeb sib npaug, qib oxygen hauv txoj hlab pa rov qab yuav tsum tau txheeb xyuas kom nyob twj ywm siab dua 19%- qhov yuav tsum tau muaj kev nyab xeeb tseem ceeb rau cov neeg ua haujlwm hauv cheeb tsam.
Cov txheej txheem xaiv cov cuab yeej
Cov txheej txheem "Technical Specifications for Nitrogen Fire Prevention in the Coal Mines" qhia tias underground mobile nitrogen units yuav tsum muaj qhov ntev sib xws nrog mine tawb thiab flatbed tsheb, thiab tag nrho cov khoom siv hluav taws xob yuav tsum muaj ntawv pov thawj tawg - pov thawj. Tam sim no muaj cov tshuab muaj cov khoom siv nitrogen ntau li ntawm 200 txog 2,000 m³ / h, npog cov kev xav tau ntawm ntau lub ntsej muag. Thaum xaiv cov khoom siv, qhov tseem ceeb yuav tsum tau muab rau kev ntseeg siab ntawm kev ua haujlwm hauv qhov kub, av noo, thiab plua plav hauv av ib puag ncig, nrog rau qib ntawm kev siv tshuab hluav taws xob thiab lub cev muaj peev xwm cuam tshuam nrog mine - kev soj ntsuam thoob ntiaj teb. Shenger Gas tuav lub sijhawm ntev - sawv ntsug ntawm kev siv roj sib cais rau kev siv kev nyab xeeb kev lag luam thiab tseem muab kev txhawb nqa kev ntseeg siab rau cov thee mining sector.
Underground mobile nitrogen generators hloov cov nitrogen qhov ncaj qha mus rau qhov chaw ntawm kev siv, xa ib tug saj zawg zog thiab raws sij hawm kev daws teeb meem rau goaf hluav taws kev tiv thaiv thiab tsuj. Nrog rau cov peev txheej tsim nyog, lawv ua tau zoo sib npaug ntawm cov khoom siv nitrogen muaj peev xwm nrog rau ntawm - qhov chaw yoog raws - tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv cov txheej txheem rho tawm nyuaj. Raws li cov cuab yeej txuas ntxiv hloov mus rau qhov siab dua, kev ua kom huv ntau dua, thiab kev tswj xyuas ntse, nws lub luag haujlwm nyob rau hauv qhov dav dua thee mine kev tiv thaiv hluav taws yuav tsuas loj hlob ntxiv.
