Combustion txhawb qhov system ntawm pob zeb wool rauv

Lub zog txuag mechanism ntawm oxygen enriched combustion

Ua kom kub kub
Cov nplaim hluav taws kub nce ntxiv nrog qhov nce ntawm cov pa oxygen hauv huab cua combustion.Feem ntau, qhov concentration ntawm 26% - 33% yog qhov zoo tshaj plaws.Vim tias qhov kub thiab txias, nws yuav muaj txiaj ntsig zoo rau kev ua kom tiav combustion, txo cov nplaim taws, txhim kho qhov sib xyaw kom sib xyaw thiab ua kom lub combustion ceev.

Fig. 1 nplaim taws thiab kub qhov chaw ntawm cov pa combustion ntawm 21% oxygen concentration

Fig. 2 nplaim taws thiab qhov kub thiab txias ntawm cov pa combustion ntawm 30% oxygen concentration
Txo cov roj flue tom qab combustion
Cov pa oxygen enriched gas uas tsawg dua 1% - 3% ntawm cov huab cua qub tuaj yeem txo cov cua ntim los ntawm 10% - 20%.Vim tias cov pa oxygen enriched gas tuaj yeem ua kom cov combustion ua tiav, nyob rau hauv siab concentration, cov khoom cua ntim tau txo, cov khoom cua txo cov cua txias coj los rau hauv, thermal efficiency yog zoo dua, thiab cov pa oxygen concentration tuaj yeem nce ntxiv. 1% thiab cov roj flue ntim tau txo qis 2% - 2.5% ntawm lub zog ntawm cov cua ntsawj ntshab quab yuam tau txais kev cawmdim, thaum lub tshuab nqus cua ntim tau raug txo, thiab lub zog hluav taws xob ntawm cov kiv cua induced tau txais kev cawmdim.Lub tso cua sov enthalpy suav nrog 79% ntawm cov nitrogen uas tsis koom nrog hauv cov cua combustion yog rhuab, exothermic thiab tshav kub exchanged, thiab thaum kawg tawm mus rau cov huab cua nrog lub tshav kub enthalpy ntawm lub tso pa kub.Qhov no ntawm nitrogen tsis tsim lub zog cua sov, nws tsuas yog siv tau ib feem ntawm lub zog cua sov, thiab kev siv cov pa oxygen enriched combustion technology txo cov roj nitrogen thiab cov cua sov.
Accelerating combustion ceev thiab txhawb combustion tiav
Rau qee cov tshuaj tiv thaiv aA + bB → cC + dD, cov tshuaj tiv thaiv kab mob ceev yog w = kCaACbB, K yog qee yam ntawm qhov kub thiab txias, thiab cov tshuaj tiv thaiv ceev tsuas yog cuam tshuam rau cov concentration ntawm reactants A thiab B. Ua kom cov pa concentration. yeej yuav ceev cov tshuaj tiv thaiv.Nyob rau tib lub sijhawm, nrog kev nce ntawm cov tshuaj tiv thaiv ceev, qhov exothermic tus nqi ntawm cov tshuaj tiv thaiv yuav nce, thiab cov nplaim taws kub kuj yuav nce.
Piv txwv li, combustion tus nqi ntawm H2 hauv cov pa ntshiab yog 2-4 npaug ntawm cov pa hauv huab cua, thiab cov pa roj ntsha yog li 10.2 npaug.Cov cuab yeej ntawm kev ntxiv cov pa oxygen thiab txhawb kev sib txuas tsis tuaj yeem tsuas yog txhim kho kev sib txuas ceev thiab tau txais kev ua kom sov zoo dua, tab sis kuj tseem pab cov tshuaj tiv thaiv combustion, txhawb cov combustion tag nrho thiab tshem tawm cov pa phem hauv paus.
Txo roj ignition kub
Lub ignition kub ntawm roj tsis tas li.Piv txwv li, qhov hluav taws kub ntawm CO hauv huab cua yog 609 ℃, thaum cov pa ntshiab huv tsuas yog 388 ℃.Yog li ntawd, oxygen enriched combustion tuaj yeem ua kom cov nplaim hluav taws muaj zog thiab tso cua sov.
Ua kom kub pauv kev siv zog
Raws li cov pa roj nplua nuj tau npaj rau hauv thaj chaw oxygen stagnation nyob rau tom qab kawg ntawm qhov chaw nplaim taws los koom rau hauv kev txhawb nqa combustion, thaj chaw nplaim taws tau nthuav dav, thiab cov hluav taws xob hluav taws xob hloov hluav taws xob thiab kev sib hloov hluav taws xob sib txuas kuj nthuav dav, uas yog sib npaug rau qhov chaw cua sov thiab boiler tso zis.
Radiation txoj cai
Vim tias oxyfuel combustion tshuab tuaj yeem txo qhov kub ntawm cov roj, thiab cov combustion tiav thiab muaj zog, raws li Stephen Boltzmann Txoj Cai: tag nrho cov hluav taws xob muaj peev xwm ntawm lub cev dub yog proportional rau plaub lub zog ntawm nws qhov kub thiab txias, yog li cov hluav taws xob muaj zog. lub zog tau txais kev txhim kho zoo heev, thiab tag nrho cov thermal efficiency ntawm lub kiln yog txhim kho.

Oxygen enriched combustion txheej txheem

Kev xav tau rau kev tsim khoom siv oxygen:
Oxygen yuav tsum tau nyob rau hauv txhua txoj kev combustion.Los ntawm kev ntxiv cov pa los yog hloov cov pa oxygen rau cov cua hauv cov txheej txheem combustion, lub tshav kub hloov tau tuaj yeem txhim kho, nplaim hluav taws kub tuaj yeem nce ntxiv thiab kev siv roj yuav txo tau, txhawm rau txhim kho tag nrho cov nyhuv combustion.Yog li nws tuaj yeem pab koj txhim kho roj efficiency thiab tsim khoom.Txoj kev ntawm cov pa oxygen tuaj yeem ua rau cov khoom siv cryogenic, PSA ntau lawm thiab lwm txoj hauv kev.Cov nroj tsuag cov pa oxygen tsis suav nrog cov khoom siv.

Txheej txheem piping system:
Nrog rau peb cov ntaub ntawv siab heev sau thiab kev saib xyuas cov txheej txheem txhais tau tias, koj tuaj yeem taug qab cov xwm txheej ntawm cov pa oxygen, suav nrog kev khiav, purity, siab, kub, thiab lwm yam. Cov ntaub ntawv no yuav raug muab rov qab rau kuv qhov kev tswj hwm lub sijhawm, PID tswj thiab cov ntaub ntawv kaw. yuav tau nqa tawm hauv lub sijhawm tiag tiag, txhawm rau ua kom cov khoom lag luam zoo ruaj khov thiab cov nqi tsim khoom qis dua.Peb lub kaw lus tuaj yeem tsim cov ntaub ntawv tseem ceeb thiab ua haujlwm cov ntaub ntawv qhia thiab luam tawm, kom cov neeg ua haujlwm tseem ceeb tuaj yeem paub qhov sib txawv ntawm kev tsim khoom tam sim no thiab cov txheej txheem teeb tsa lossis lub hom phiaj tus nqi hauv lub sijhawm.

Oxygen enrichment system:
Peb cov txheej txheem tsim tshwj xeeb uas tsim cov pa oxygen ntxiv cov pa oxygen rau koj cov txheej txheem los ntawm kev siv lub tshuab cua lossis lub tshuab xa hluav taws xob loj.Lub kaw lus raug kho raws li qhov tsis muaj ntawm txhua lub cupola txhawm rau ua kom muaj txiaj ntsig zoo ntawm cov pa oxygen enriched combustion - txuag coke, ua kom muaj peev xwm ntau lawm, stabilizing melting tus nqi thiab txhim kho alloy rov qab.

Pure oxygen combustion system:
Lub kaw-loop faib system ntawm cupola ntshiab oxygen combustion ntawm peb lub tuam txhab tuaj yeem qhia cov pa oxygen ntxiv kom txo tau cov coke thiab txhim kho kev ua haujlwm ntawm cupola.Peb lub tswv yim tsim ua ke ua ke ib qho tshwj xeeb ntshiab oxygen combustion nrog lub peev xwm los tsuag cov pa oxygen thiab / los yog cov khib nyiab ib tus zuj zus los ntawm tuyeres los txhim kho qhov yooj yim ntawm cupola.Cov tshuab no tuaj yeem pab koj txo qis cov coke siv, txo tus nqi ntawm cov khoom siv raw, pov tseg cov ntaub ntawv pov tseg zoo, thiab txhim kho tus nqi melting.
Yog li, cov pa oxygen enriched combustion system ntawm cupola feem ntau muaj cov hauv qab no:
Oxygen enriched combustion ntawm cupola yog ntxiv oxygen rau combustion txhawb huab cua ntawm cupola kom nws cov ntsiab lus oxygen tshaj qhov qub tus nqi ntawm huab cua (21%), thiaj li los txhim kho cov khoom tsim ntawm molten hlau thiab txuag coke.Thaum cov hluav taws kub hnyiab hauv lub xeev muaj cov pa oxygen, qhov kub thiab txias tau nce ntxiv, uas tuaj yeem ntxiv dag zog rau cov cua sov hloov hauv cupola thiab txhim kho cov khoom tsim tau.Nrog rau qhov nce ntawm cov pa oxygen hauv combustion txhawb huab cua, tus nqi ntawm combustion txhawb huab cua yog txo thiab cov huab cua yog khoob Piv nrog rau cov txheej txheem ib txwm tsis ntxiv oxygen, cov pa oxygen enriched combustion tshuab ntawm cupola muaj cov hauv qab no zoo:
Ua kom kub thiab txo qhov kub ntawm qhov tsis tshua muaj silicon ntawm tib coke noj;
Txhim kho kev tsim khoom;
Nyob rau tib lub tapping kub, kev noj cov coke yog txo thiab cov ntsiab lus ntawm S yog txo;
Thaum lub qhov cub qhib, qhov tapping kub nce pom tseeb nyob rau tib lub sijhawm.
Technical yam ntxwv ntawm oxygen enriched combustion system

Tshwj xeeb:
Tseem ceeb txuag hluav taws xob
Daim ntawv thov nyob rau hauv ntau yam combustion teb yuav zoo heev txhim kho lub thermal efficiency ntawm combustion, piv txwv li, nyob rau hauv lub iav kev lag luam, qhov nruab nrab roj (gas) txuag yog 20% ​​- 40%, nyob rau hauv lub industrial boiler, cua sov rauv, hlau ua txhaum thiab ntsug. kiln ntawm cement cog, lub zog txuag yog 20% ​​- 50%, ua kom lub zog thermal efficiency.

Siv tau ntev ntawm lub cub tawg
Qhov optimization ntawm combustion ib puag ncig ua rau qhov kub thiab txias faib nyob rau hauv lub cub tawg ntau tsim nyog thiab zoo dua lub neej kev pab cuam ntawm lub cub tawg thiab boiler.

Nws yog qhov tsim nyog rau kev txhim kho cov khoom tsim tawm thiab zoo
Hauv kev lag luam iav, kev txhim kho ntawm qhov kub thiab txias ua rau lub melting tus nqi nce, lub sij hawm cua sov luv luv, qhov tso zis ntau ntxiv, qhov tsis zoo ntawm qhov txo qis thiab cov txiaj ntsig nce.

Qhov zoo tshaj plaws kev tiv thaiv ib puag ncig
Cov khoom tsis muaj hluav taws xob uas muaj nyob rau hauv cov roj hluav taws xob tau hlawv tag nrho, cov roj dub ntawm cov pa hluav taws xob txo qis, cov roj hluav taws xob uas muaj hluav taws xob thiab teeb meem tsim los ntawm combustion decomposition tau hlawv tag nrho, thiab tiam ntawm cov pa phem raug txo.Tus nqi ntawm cov pa tso pa yog pom tseeb txo thiab cov pa phem thermal txo.
Economic kev ntsuam xyuas ntawm oxygen enriched combustion
Qhov kev xav tau: rau 5t / h Cupola, lub sijhawm ua haujlwm txhua xyoo yog 3600h, thawj coke piv yog 1:10, thiab cov txiaj ntsig yog 70%.Kev xam nyiaj txiag:
Txuag 15% ntawm coke (tus nqi ntawm coke yog 2000 yuan / T) 5 * 3600 / 70% * (1:10) * 15% * 2000 = 770000 yuan / xyoo.

Siv cov pa oxygen 160nm3 / h (tus nqi oxygen yog 1.0 yuan / m3) 160 * 3600 * 1.0 = 576000 yuan / xyoo

Kwv yees li 150000 yuan tau nqis peev rau hauv cov cuab yeej siv, uas yog kev nqis peev ib zaug (xav tias)

Muaj peev xwm nce 15%.5 * 3600 * 15% = 2700t / xyoo

Xaus: qhov txiaj ntsig ntawm kev lag luam ncaj qha yog kom txuag tau tus nqi tsim khoom ntawm 60000 yuan / xyoo thiab ua kom muaj peev xwm ntau lawm los ntawm 2700t / xyoo.Super txuas thiab cov txiaj ntsig tsis ncaj ncees yog qhov tseem ceeb heev!