Kuongororwa kwezvikonzero zvinokonzera kuoma kwemvura mumuviri (gypsum hydration)
1 Kudya mafuta ebhoyila uye kupisa kwakasimba
Maboiler emagetsi anoshandiswa nemarasha anofanirwa kushandisa mafuta akawanda emafuta kuti abatsire pakupisa panguva yekutanga, kudzimwa, kupiswa kwakasimba uye kudzora kukwirira kwakadzika nekuda kwekugadzirwa uye kupisa marasha. Nekuda kwekushanda kusina kugadzikana uye kupiswa kwakakwana kweboiler, huwandu hwakawanda hwemafuta asina kupiswa kana musanganiswa weupfu hwemafuta hunopinda mutsvina yemafuta ine gasi reflue. Pasi pekukanganiswa kwakasimba muabsorber, zviri nyore kwazvo kugadzira furo rakatsetseka uye kuungana pamusoro petsvina. Uku ndiko kuongorora kwehuwandu hwefuro pamusoro petsvina yemafuta yemagetsi.
Mafuta paanenge achiungana pamusoro pemvura inotsvedza, chikamu chayo chinokurumidza kupararira mumvura inotsvedza pasi pekubatana kwekukurunga nekupfapfaidza, uye firimu remafuta rakatetepa rinoumbwa pamusoro pemvura inotsvedza, calcium sulfite nezvimwe zvinhu zviri mumvura inotsvedza, iyo inoputira mvura inotsvedza nezvimwe zvinhu, ichidzivisa kunyungudika kwemvura inotsvedza uye kuoxidation kwecalcium sulfite, nokudaro ichikanganisa kushanda kwe desulfurization uye kugadzirwa kwe gypsum. Mvura inotsvedza ine mafuta inopinda mu gypsum dehydration system kuburikidza ne gypsum discharge pombi. Nekuda kwekuvapo kwemafuta uye zvigadzirwa zve sulfurous acid zvisina oxidized zvakakwana, zviri nyore kukonzera kuti gap re vacuum belt conveyor filter cloth rivharwe, izvo zvinotungamira kumatambudziko mu gypsum dehydration.
2.Kuwanda kweutsi paInlet
Nzvimbo yekunyudza guruva yakanyorova ine simba rekubvisa guruva, uye kushanda kwayo kwekubvisa guruva kunogona kusvika pa70%. Chigadziko chemagetsi chakagadzirwa kuti chive nehuwandu hweguruva hwe20mg/m3 panzvimbo inounganira guruva (nzvimbo inonyudza guruva). Kuti tichengetedze simba uye tideredze kushandiswa kwemagetsi emuchina, huwandu hweguruva chaihwo panzvimbo inounganira guruva hunodzorwa pa30mg/m3. Guruva rakawandisa rinopinda munhare yekunyudza uye rinobviswa nemhedzisiro yekubvisa guruva yakasanganiswa yesystem yekunyudza guruva. Zvizhinji zvezvimedu zveguruva zvinopinda munhare yekunyudza mushure mekucheneswa kweguruva nemagetsi zviri pasi pe10μm, kana kutoti pasi pe2.5μm, izvo zvidiki zvikuru pane saizi yezvikamu zvegypsum slurry. Mushure mekunge guruva rapinda mubhandi revacuum negypsum slurry, rinovharawo jira rekusefa, zvichikonzera kusapinda zvakanaka kwejira rekusefa uye kuoma kwekushaya mvura mumuviri.
2. Kubudirira kwemhando ye gypsum slurry
1 Kuwanda kwetsvina
Kukura kwehuwandu hweslurry kunoratidza huwandu hweslurry mu tower yekunyudza. Kana huwandu hwacho huri hudiki, zvinoreva kuti huwandu hweCaSO4 mu slurry hwakaderera uye huwandu hweCaCO3 hwakakwira, izvo zvinokonzera zvakananga kurasika kweCaCO3. Panguva imwe chete, nekuda kwezvikamu zvidiki zveCaCO3, zviri nyore kukonzera matambudziko ekushaya mvura mumuviri; kana huwandu hweslurry hwakanyanya, zvinoreva kuti huwandu hweCaSO4 mu slurry hwakanyanya. CaSO4 yakakwira ichadzivisa kunyungudika kweCaCO3 uye inodzivirira kunyudzwa kweSO2. CaCO3 inopinda mu vacuum dehydration system ne gypsum slurry uye inokanganisawo mhedzisiro yekushaya mvura mumuviri ye gypsum. Kuti ipe mukana wakazara kune zvakanakira zve double-tower double-circulation system ye wet flue gas desulfurization, pH ye tower yekutanga inofanira kudzorwa mukati me 5.0±0.2, uye huwandu hweslurry hunofanira kudzorwa mukati me 1100±20kg/m3. Pakushanda chaiko, huwandu hwetsvina yeshongwe yekutanga yefekitori hunosvika 1200kg/m3, uye hunotosvika 1300kg/m3 panguva dzakakwirira, izvo zvinogara zvichidzorwa padanho repamusoro.
2. Dhigirii rekumanikidzwa kwe oxidation ye slurry
Kumanikidzwa kwe slurry kunosanganisira kuisa mweya wakakwana mu slurry kuti oxidation ye calcium sulfite kuenda ku calcium sulfate reaction iite yakakwana, uye chiyero che oxidation chakakwira kupfuura 95%, zvichiita kuti pave nemhando dzakakwana dze gypsum mu slurry yekukura kwekristaro. Kana oxidation isina kukwana, makristaro akasanganiswa e calcium sulfite ne calcium sulfate achagadzirwa, zvichikonzera kukura. Mwero wekumanikidzwa kwe slurry unoenderana nezvinhu zvakaita sehuwandu hwemhepo inooxidation, nguva yekugara kwe slurry, uye stirling effect ye slurry. Mhepo isina kukwana ye oxidation, nguva pfupi yekugara kwe slurry, kupararira kusina kuenzana kwe slurry, uye stirling effect isina kunaka zvese zvinoita kuti CaSO3·1/2H2O content mu tower ive yakakwira zvakanyanya. Zvinogona kuonekwa kuti nekuda kwekushomeka kwe local oxidation, CaSO3·1/2H2O content mu slurry yakakwira zvakanyanya, zvichikonzera kuoma kwe gypsum dehydration uye mvura yakawanda.
3. Kusvibiswa kwehuwandu mutsvina Kusvibiswa kwehuwandu mutsvina kunonyanya kubva mugasi remvura nedombo remakaka. Tsvina iyi inoumba maion ekusvibiswa mutsvina, zvichikanganisa chimiro chegypsum. Simbi dzinorema dzinonyungudutswa nguva dzose muutsi dzichadzivisa kuita kweCa2+ neHSO3-. Kana huwandu hweF- neAl3+ mutsvina hwawanda, fluorine-aluminium complex AlFn ichagadzirwa, ichifukidza pamusoro pezvidimbu zvematombo, zvichikonzera chepfu yetsvina, zvichideredza kushanda kwe desulfurization, uye zvikamu zvematombo zvakapfava zvinosanganiswa mumakristaro egypsum asina kugadziriswa zvakakwana, zvichiita kuti zviome kunyungudutsa gypsum. Cl-slurry inonyanya kubva kuHCl mugasi remvura uye mvura yemushonga. Cl-content mumvura yemushonga idiki, saka Cl-slurry inonyanya kubva mugasi remvura. Kana paine huwandu hwakawanda hweCl-in slurry, Cl- inoputirwa nemakristaro uye inosanganiswa nehuwandu hwakati hweCa2+ muslurry kuti igadzire CaCl2 yakagadzikana, zvichisiya huwandu hwakati hwemvura mumakristaro. Panguva imwe chete, huwandu hwakati hweCaCl2 muslurry hucharamba huripo pakati pemakristaro egypsum, zvichivhara nzira yemvura yakasununguka pakati pemakristaro, zvichiita kuti huwandu hwemvura mugypsum huwedzere.
3. Kukanganisa kwekushanda kwemidziyo
1. Sisitimu yekudzikisa mvura yeGypsum. Gypsum slurry inopombwa kuenda kugypsum cyclone kuti ideredze mvura kuburikidza nepombi yegypsum discharge. Kana slurry yekuyerera kwepasi yakabatana kusvika pahuwandu hwakasimba hwe50%, inoyerera ichienda ku vacuum belt conveyor kuti ideredze mvura. Zvinhu zvikuru zvinokanganisa kupatsanurwa kwegypsum cyclone i cyclone inlet pressure uye saizi yejecha setting nozzle. Kana cyclone inlet pressure yakaderera, solid-liquid separation effect ichave isina kunaka, low flow slurry ichave isina huwandu hwakasimba, izvo zvinokanganisa gypsum dehydration effect uye kuwedzera huwandu hwemvura; kana cyclone inlet pressure yakanyanya, separation effect ichave iri nani, asi zvichakanganisa classification effect yecyclone uye zvinokonzera kupfeka kwakanyanya pamidziyo. Kana saizi yejecha setting nozzle yakakura zvakanyanya, zvichaitawo kuti low flow slurry ive nehuwandu hwakasimba hushoma uye zvidimbu zvidiki, izvo zvichakanganisa low flow effect ye vacuum belt conveyor.
Vacuum yakakwira kana yakaderera zvakanyanya inokanganisa gypsum dehydration effect. Kana vacuum yakaderera zvakanyanya, kugona kubvisa hunyoro kubva mugypsum kuchaderedzwa, uye gypsum dehydration effect ichave yakaipa; kana vacuum yakakwira zvakanyanya, mipata iri mujira rekusefa inogona kuvharika kana bhandi rinogona kutsauka, izvo zvinozokonzerawo gypsum dehydration effect yakaipa. Pasi pemamiriro akafanana ekushanda, kana mhepo inoyerera yejira rekusefa iri nani, gypsum dehydration effect iri nani; kana mhepo inoyerera yejira rekusefa iri shoma uye filter channel yakavharwa, gypsum dehydration effect ichave yakaipa. Ukobvu hwe filter cake hunewo mhedzisiro yakakura pa gypsum dehydration. Kana bhandi conveyor speed yaderera, filter cake thiri inowedzera, uye vacuum pomp yekuburitsa chikamu chepamusoro che filter cake inodzikira, zvichikonzera kuwedzera kwe gypsum moisture content; kana bhandi conveyor speed yawedzera, filter cake thiri inoderera, izvo zviri nyore kukonzera leak ye filter cake, kuparadza vacuum, uye zvichikonzerawo kuwedzera kwe gypsum moisture content.
2. Kushanda zvisina kujairika kwenzira yekuchenesa mvura yakasviba ye desulfurization kana huwandu hushoma hwekuchenesa mvura yakasviba kunokanganisa kuburitswa kwemvura yakasviba ye desulfurization. Kana ikashanda kwenguva refu, tsvina dzakadai seutsi neguruva zvicharamba zvichipinda mu slurry, uye simbi dzinorema, Cl-, F-, Al-, nezvimwewo mu slurry zvicharamba zvichiwedzera, zvichikonzera kudzikira kwemhando ye slurry, zvichikanganisa kufambira mberi kwe desulfurization reaction, gypsum formation uye kushaya mvura. Tichitora Cl-in slurry semuenzaniso, Cl- content mu slurry ye first-level absorption tower ye power plant inosvika 22000mg/L, uye Cl- content mu gypsum inosvika 0.37%. Kana Cl- content mu slurry iri inenge 4300mg/L, mhedzisiro ye gypsum ye chloride ion inova nani. Sezvo chloride ion content ichiwedzera, mhedzisiro ye gypsum ye slurry inoderera zvishoma nezvishoma.
Matanho ekudzora
1. Simbisa kugadziriswa kwekupiswa kwekushanda kwebhoyira, kuderedza kukanganiswa kwekuisa mafuta uye kupisa kwakasimba pahurongwa hwekubvisa sulfurization panguva yekutanga uye kudzima kwebhoyira kana kushanda kwemutoro mudiki, kudzora huwandu hwemapombi ekutenderera kweslurry akaiswa, uye kuderedza kusvibiswa kwemusanganiswa weupfu hwemafuta asina kupiswa kuenda kuslurry.
2. Tichifunga nezvekushanda kwakasimba kwenguva refu uye hupfumi hwese hwesystem yekubvisa sulfurization, simbisa kugadziriswa kwekushanda kwemuunganidzi weguruva, tora mashandiro epamusoro, uye dzora huwandu hweguruva panzvimbo inoburitswa guruva (desulfurization inlet) mukati memutengo wekugadzira.
3. Kutarisa huwandu hwemvura inotsvedza panguva chaiyo (mita yekuyera kuwanda kweslurry), huwandu hwemhepo inooxidation, mwero wemvura inonyudzwa mushongwe (mita yeradar), mudziyo wekukurunga slurry, nezvimwewo kuti uve nechokwadi chekuti desulfurization reaction inoitwa mumamiriro ezvinhu akajairwa.
4. Simbisa kugadziriswa uye kugadziriswa kwe gypsum cyclone ne vacuum belt conveyor, dzora kumanikidzwa kwe gypsum cyclone uye vacuum grade ye bhandi conveyor mukati mehuwandu hwakakodzera, uye tarisa nguva dzose cyclone, jecha rinogadzika nozzle nejira rekusefa kuti uve nechokwadi chekuti michina inoshanda zvakanaka.
5. Iva nechokwadi chekuti sisitimu yekuchenesa mvura yakasviba inoshandiswa pakutsvaira sulfurization inoshanda zvakanaka, gara uchiburitsa mvura yakasviba inoshandiswa pakutsvaira sulfurization, uye deredza kusvibiswa kuri mutsvina yemutowo wekunyudza.
Mhedziso
Dambudziko rekushaya mvura mumuviri wegypsum idambudziko rinowanzoitika mumidziyo yekubvisa sulfurization yakanyorova. Kune zvinhu zvakawanda zvinopesvedzera, zvinoda kuongororwa kwakazara uye kugadziriswa kubva pazvinhu zvakawanda zvakaita sekunze, mamiriro ekuita uye mamiriro ekushanda kwemidziyo. Kungonzwisisa zvakadzama mashandiro ekubvisa sulfurization reaction uye hunhu hwekushanda kwemidziyo uye kudzora zvine musoro mashandisirwo ehurongwa ndiko kunogona kuvimbiswa kuti mhedzisiro yekubvisa sulfurization yegypsum yakabviswa sulfur inogona kusimbiswa.
Nguva yekutumira: Kukadzi-06-2025
