Kev Siv Hydrogen thiab Alkali Hauv Alkaline Electrolyzer Dej Electrolysis Hydrogen Production Process

Hauv cov txheej txheem tsim cov hydrogen ntawm alkaline electrolyzer, yuav ua li cas kom lub cuab yeej ua haujlwm ruaj khov, ntxiv rau qhov zoo ntawm lub electrolyzer nws tus kheej, uas qhov nyiaj ntawm lye ncig ntawm qhov chaw kuj yog qhov tseem ceeb.

Tsis ntev los no, ntawm Lub Rooj Sib Tham Txog Kev Nyab Xeeb ntawm Pawg Neeg Saib Xyuas Kev Ua Haujlwm Hydrogen ntawm Tuam Tshoj Industrial Gases Association, Huang Li, tus thawj coj ntawm Hydrogen Water Electrolysis Hydrogen Operation and Maintenance Program, tau qhia peb qhov kev paub txog kev teeb tsa ntim hydrogen thiab lye hauv kev sim thiab kev ua haujlwm thiab kev txij nkawm.

Cov ntawv hauv qab no yog daim ntawv qub.

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Nyob rau hauv keeb kwm yav dhau los ntawm lub teb chaws dual-carbon tswv yim, Ally Hydrogen Energy Technology Co., Ltd, uas tau tshwj xeeb hauv kev tsim hydrogen rau 25 xyoo thiab yog thawj tus koom nrog hauv kev lag luam ntawm hydrogen zog, tau pib nthuav dav kev tsim cov thev naus laus zis ntsuab hydrogen thiab cov khoom siv, suav nrog kev tsim cov electrolysis tank khiav, kev tsim khoom siv, electrode plating, nrog rau kev sim electrolysis tank thiab kev ua haujlwm thiab kev saib xyuas.

Ib tugTxoj Cai Ua Haujlwm ntawm Alkaline Electrolyzer

Los ntawm kev xa cov hluav taws xob ncaj qha los ntawm lub tshuab electrolyzer uas muaj electrolyte, cov dej molecules raug electrochemically reacted ntawm cov electrodes thiab decomposed rau hauv hydrogen thiab oxygen. Txhawm rau txhim kho qhov conductivity ntawm electrolyte, cov electrolyte dav dav yog cov kua dej nrog qhov concentration ntawm 30% potassium hydroxide lossis 25% sodium hydroxide.

Lub electrolyzer muaj ntau lub hlwb electrolytic. Txhua lub chamber electrolysis muaj cathode, anode, diaphragm thiab electrolyte. Lub luag haujlwm tseem ceeb ntawm diaphragm yog tiv thaiv cov roj permeation. Hauv qab ntawm lub electrolyzer muaj ib qho nkag thiab tawm, sab saud ntawm cov roj-kua sib xyaw ntawm alkali thiab oxy-alkali ntws channel. Dhau mus rau hauv ib qho voltage ntawm tam sim no ncaj qha, thaum lub voltage tshaj qhov theoretical decomposition voltage ntawm dej 1.23v thiab thermal neutral voltage 1.48V saum toj no ib qho nqi, lub electrode thiab cov kua interface redox reaction tshwm sim, dej yog decomposed rau hauv hydrogen thiab oxygen.

Ob Yuav ua li cas cov lye thiaj li ncig tau

1️⃣Hydrogen, Oxygen Sab Lye Sib Xyaws Ua Ke

Hauv daim ntawv no ntawm kev ncig, cov lye nkag mus rau hauv lub twj tso kua dej lye los ntawm cov yeeb nkab txuas ntawm qab ntawm lub hydrogen separator thiab oxygen separator, thiab tom qab ntawd nkag mus rau hauv cathode thiab anode chambers ntawm electrolyzer tom qab txias thiab lim. Qhov zoo ntawm kev sib xyaw ua ke yog cov qauv yooj yim, cov txheej txheem luv luv, tus nqi qis, thiab tuaj yeem ua kom muaj tib qhov loj ntawm lye ncig mus rau hauv cathode thiab anode chambers ntawm electrolyzer; qhov tsis zoo yog tias ntawm ib sab tes, nws yuav cuam tshuam rau qhov huv ntawm hydrogen thiab oxygen, thiab ntawm qhov tod tes, nws yuav ua rau qib ntawm hydrogen-oxygen separator tsis hloov kho, uas yuav ua rau muaj kev pheej hmoo ntawm hydrogen-oxygen sib xyaw. Tam sim no, sab hydrogen-oxygen ntawm lub voj voog sib xyaw lye yog cov txheej txheem feem ntau.

2️⃣ Cais cov hydrogen thiab cov pa oxygen sab lye

Hom kev ncig no xav tau ob lub twj tso kua lye, uas yog ob lub twj tso kua sab hauv. Cov kua lye nyob hauv qab ntawm lub tshuab cais hydrogen hla dhau lub twj tso kua hydrogen, txias thiab lim, thiab tom qab ntawd nkag mus rau hauv chav cathode ntawm lub electrolyzer; cov kua lye nyob hauv qab ntawm lub tshuab cais oxygen hla dhau lub twj tso kua oxygen, txias thiab lim, thiab tom qab ntawd nkag mus rau hauv chav anode ntawm lub electrolyzer. Qhov zoo ntawm kev ncig ywj pheej ntawm lye yog tias cov hydrogen thiab oxygen tsim los ntawm electrolysis yog qhov huv siab, lub cev zam kev pheej hmoo ntawm kev sib xyaw hydrogen thiab oxygen separator; qhov tsis zoo yog tias cov qauv thiab cov txheej txheem nyuaj thiab kim, thiab nws tseem tsim nyog los xyuas kom meej tias qhov sib xws ntawm cov dej ntws, lub taub hau, lub zog thiab lwm yam ntawm cov twj tso kua ntawm ob sab, uas ua rau qhov nyuaj ntawm kev ua haujlwm nce ntxiv, thiab tso tawm qhov yuav tsum tau tswj hwm kev ruaj khov ntawm ob sab ntawm lub kaw lus.

Peb Qhov Kev Cuam Tshuam ntawm Kev Nqus Dej ntawm Lye rau Kev Tsim Hydrogen Los Ntawm Dej Electrolytic Thiab Kev Ua Haujlwm ntawm Electrolyzer

1️⃣Kev ncig ntawm cov lye ntau dhau

(1) Kev cuam tshuam rau hydrogen thiab oxygen purity

Vim tias hydrogen thiab oxygen muaj qee qhov solubility hauv lye, qhov ntim ntawm cov khoom siv yog loj dhau yog li tag nrho cov hydrogen thiab oxygen yaj nce thiab nkag mus rau hauv txhua lub chamber nrog lye, uas ua rau qhov huv ntawm hydrogen thiab oxygen kom txo qis hauv qhov hluav taws xob ntawm electrolyzer; qhov ntim ntawm cov khoom siv yog loj dhau yog li lub sijhawm khaws cia ntawm hydrogen thiab oxygen kua separator luv dhau, thiab cov roj uas tsis tau sib cais tag nrho raug coj rov qab mus rau sab hauv ntawm electrolyzer nrog lye, uas cuam tshuam rau kev ua haujlwm ntawm electrolyzer electrochemical reaction thiab qhov huv ntawm hydrogen thiab oxygen, thiab ntxiv qhov no yuav cuam tshuam rau kev ua haujlwm ntawm electrochemical reaction hauv electrolyzer thiab qhov huv ntawm hydrogen thiab oxygen, thiab ntxiv cuam tshuam rau lub peev xwm ntawm hydrogen thiab oxygen purification khoom siv rau dehydrogenate thiab deoxygenate, ua rau muaj kev cuam tshuam tsis zoo ntawm hydrogen thiab oxygen purification thiab cuam tshuam rau qhov zoo ntawm cov khoom.

(2) Cov nyhuv rau qhov kub ntawm lub tank

Yog tias qhov kub ntawm lub tshuab ua kom txias lye tseem tsis hloov pauv, cov lye ntws ntau dhau yuav tshem tawm ntau qhov cua sov ntawm lub electrolyzer, ua rau qhov kub ntawm lub tank poob qis thiab lub zog nce ntxiv.

(3) Kev cuam tshuam rau tam sim no thiab voltage

Kev ntws ntawm lye ntau dhau yuav cuam tshuam rau qhov ruaj khov ntawm tam sim no thiab voltage. Kev ntws ntawm cov kua ntau dhau yuav cuam tshuam rau qhov kev hloov pauv ib txwm ntawm tam sim no thiab voltage, ua rau tam sim no thiab voltage tsis yooj yim ruaj khov, ua rau muaj kev hloov pauv hauv kev ua haujlwm ntawm lub txee rectifier thiab transformer, thiab yog li cuam tshuam rau kev tsim khoom thiab qhov zoo ntawm hydrogen.

(4) Kev siv hluav taws xob ntau ntxiv

Kev ncig ntawm cov lye ntau dhau kuj tuaj yeem ua rau kev siv hluav taws xob ntau ntxiv, cov nqi khiav lag luam nce ntxiv thiab kev siv hluav taws xob tsawg dua. Feem ntau yog vim muaj kev nce ntxiv ntawm cov dej txias pab txhawb rau kev ncig sab hauv thiab kev ncig sab nraud ntawm cov tshuaj tsuag thiab kiv cua, kev thauj dej txias, thiab lwm yam, yog li kev siv hluav taws xob ntau ntxiv, kev siv hluav taws xob tag nrho kuj nce ntxiv.

(5) Ua rau cov khoom siv tsis ua haujlwm

Kev ncig ntawm cov lye ntau dhau ua rau lub twj tso kua lye ntau ntxiv, uas sib raug rau qhov nce ntxiv ntawm cov dej ntws, siab thiab qhov kub hloov pauv hauv lub electrolyzer, uas ua rau cuam tshuam rau cov electrodes, diaphragms thiab gaskets hauv lub electrolyzer, uas yuav ua rau cov khoom siv tsis ua haujlwm lossis puas tsuaj, thiab ua rau muaj kev nce ntxiv ntawm kev saib xyuas thiab kho.

2️⃣ Kev ncig ntawm Lye me dhau

(1) Kev cuam tshuam rau qhov kub ntawm lub tank

Thaum lub ntim ntawm lye tsis txaus, qhov kub hauv lub electrolyzer tsis tuaj yeem tshem tawm raws sijhawm, ua rau qhov kub nce ntxiv. Qhov chaw kub siab ua rau lub zog ntawm cov dej hauv cov roj theem nce thiab cov dej hauv cov dej nce ntxiv. Yog tias cov dej tsis tuaj yeem condensed txaus, nws yuav ua rau lub nra hnyav ntawm lub kaw lus ntxuav thiab cuam tshuam rau qhov cuam tshuam ntawm kev ntxuav, thiab nws tseem yuav cuam tshuam rau qhov cuam tshuam thiab lub neej ntawm cov catalyst thiab adsorbent.

(2) Kev cuam tshuam rau lub neej ntawm lub diaphragm

Qhov kub thiab txias tas mus li yuav ua rau lub diaphragm laus sai dua, ua rau nws txoj kev ua haujlwm poob qis lossis tawg, yooj yim ua rau lub diaphragm ntawm ob sab ntawm hydrogen thiab oxygen permeability sib cuam tshuam, cuam tshuam rau qhov huv ntawm hydrogen thiab oxygen. Thaum sib cuam tshuam infiltration ze rau qhov txwv qis ntawm kev tawg yog li qhov tshwm sim ntawm electrolyzer txaus ntshai nce ntxiv heev. Tib lub sijhawm, qhov kub thiab txias tas mus li kuj tseem yuav ua rau kev puas tsuaj rau lub sealing gasket, ua rau nws lub neej luv dua.

(3) Kev cuam tshuam rau cov electrodes

Yog tias cov lye uas ncig mus los tsawg dhau, cov roj uas tsim tawm tsis tuaj yeem tawm hauv qhov chaw nruab nrab ntawm lub electrode sai sai, thiab qhov ua haujlwm ntawm electrolysis raug cuam tshuam; yog tias lub electrode tsis tuaj yeem sib cuag tag nrho nrog cov lye los ua cov tshuaj electrochemical, qhov tsis zoo ntawm kev tso tawm ib nrab thiab kev hlawv qhuav yuav tshwm sim, ua kom cov catalyst poob ntawm lub electrode.

(4) Kev cuam tshuam rau lub zog hluav taws xob ntawm tes

Tus nqi ntawm lye uas ncig mus los me dhau, vim tias cov hydrogen thiab cov pa oxygen uas tsim nyob rau hauv qhov chaw nruab nrab ntawm lub electrode tsis tuaj yeem tshem tawm raws sijhawm, thiab tus nqi ntawm cov pa roj yaj hauv electrolyte nce ntxiv, ua rau muaj kev nce ntxiv ntawm qhov hluav taws xob ntawm lub chamber me me thiab kev siv hluav taws xob nce ntxiv.

Plaub Txoj Kev rau kev txiav txim siab qhov zoo tshaj plaws ntawm cov dej ntws ntws

Yuav kom daws tau cov teeb meem saum toj no, nws yog ib qho tsim nyog yuav tsum ua cov kev ntsuas sib xws, xws li tsis tu ncua xyuas lub tshuab lye kom ntseeg tau tias nws ua haujlwm ib txwm; tswj cov xwm txheej zoo ntawm kev tso cua sov nyob ib puag ncig lub electrolyzer; thiab kho cov kev ua haujlwm ntawm lub electrolyzer, yog tias tsim nyog, kom tsis txhob muaj qhov loj dhau lossis me dhau ntawm cov lye ncig.

Qhov zoo tshaj plaws ntawm cov lye circulation flow rate yuav tsum tau txiav txim siab raws li cov kev cai tshwj xeeb ntawm electrolyzer, xws li qhov loj ntawm electrolyzer, tus naj npawb ntawm cov chambers, kev ua haujlwm siab, qhov kub ntawm cov tshuaj tiv thaiv, kev tsim cua sov, lye concentration, lye cooler, hydrogen-oxygen separator, tam sim no density, roj purity thiab lwm yam kev xav tau, cov khoom siv thiab cov kav dej ruaj khov thiab lwm yam.

Cov Kev Ntsuas Kev Ntsuas:

qhov loj 4800x2240x2281mm

tag nrho qhov hnyav 40700Kg

Qhov loj ntawm chav ua haujlwm zoo yog 1830, Tus naj npawb ntawm chav ua haujlwm yog 238

Qhov ceev tam sim no ntawm electrolyzer 5000A / m²

kev ua haujlwm siab 1.6Mpa

kub ntawm cov tshuaj tiv thaiv 90 ℃ ± 5 ℃

Ib txheej ntawm cov khoom siv electrolyzer hydrogen ntim 1300Nm³ / h

Cov Khoom Pa oxygen 650Nm³ / h

tam sim no ncaj qha n13100A, dc voltage 480V

Lye Txias Φ700x4244mm

thaj chaw pauv cua sov 88.2m²

Lub tshuab cais hydrogen thiab oxygen Φ1300x3916mm

Lub tshuab cais pa oxygen Φ1300x3916mm

Cov tshuaj potassium hydroxide concentration 30%

Tus nqi tiv thaiv dej ntshiab > 5MΩ·cm

Kev sib raug zoo ntawm cov kua qaub hydroxide thiab electrolyzer:

Ua kom dej ntshiab ua tau zoo, coj cov hydrogen thiab oxygen tawm, thiab tshem tawm cua sov. Cov dej txias ntws siv los tswj qhov kub ntawm cov lye kom qhov kub ntawm cov electrolyzer teb ruaj khov, thiab cov cua sov tsim ntawm cov electrolyzer thiab cov dej txias ntws siv los phim qhov sib npaug ntawm cua sov ntawm lub kaw lus kom ua tiav qhov xwm txheej ua haujlwm zoo tshaj plaws thiab cov kev ua haujlwm txuag hluav taws xob tshaj plaws.

Raws li kev ua haujlwm tiag tiag:

Lye kev ncig ntim tswj ntawm 60m³ / h,

Cov dej txias ntws qhib li ntawm 95%,

Qhov kub ntawm cov electrolyzer yog tswj ntawm 90 ° C thaum puv load,

Qhov zoo tshaj plaws ntawm electrolyzer DC fais fab siv yog 4.56 kWh/Nm³H₂.

Tsibsau ua kom luv luv

Hauv kev xaus lus, qhov ntim ntawm lye yog ib qho tseem ceeb hauv cov txheej txheem ntawm kev tsim hydrogen los ntawm dej electrolysis, uas muaj feem cuam tshuam nrog kev huv ntawm cov roj, lub zog hluav taws xob hauv chav, qhov kub ntawm electrolyzer thiab lwm yam. Nws yog qhov tsim nyog los tswj qhov ntim ntawm 2 ~ 4 zaug / teev / feeb ntawm lye hloov hauv lub tank. Los ntawm kev tswj hwm qhov ntim ntawm lye, nws ua kom muaj kev ua haujlwm ruaj khov thiab muaj kev nyab xeeb ntawm cov khoom siv hydrogen electrolysis dej rau lub sijhawm ntev.

Hauv cov txheej txheem tsim hydrogen los ntawm dej electrolysis hauv alkaline electrolyzer, kev ua kom zoo dua ntawm cov kev ua haujlwm thiab kev tsim electrolyzer khiav, ua ke nrog cov khoom siv electrode thiab diaphragm xaiv cov khoom siv yog qhov tseem ceeb los nce tam sim no, txo cov hluav taws xob tank thiab txuag kev siv hluav taws xob.

——Tiv tauj peb——

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