KUCHENYA KWEGASI RINONYORORA NEKUCHENYA KWELIME/LIMESTONE

Zvinhu zvirimo

• Kubudirira kwekubvisa sulphurization kunopfuura 99% kunogona kuwanikwa
• Kuwanikwa kweanopfuura 98% kunogona kuwanikwa
• Unyanzvi hahuna chekuita nenzvimbo chaiyo
• Chigadzirwa chinotengeswa
• Kushanda kwemutoro wezvikamu zvisingaperi
• Nzira ine nhamba huru yezvinyorwa pasi rose

Matanho Ekuita

Matanho akakosha ekuita nzira iyi yekubvisa sulphurization ndeaya:

• Kugadzirira uye kuyera hunhu hwemushonga
• Kubviswa kweSOx (HCl, HF)
• Kubvisa mvura uye kugadzirisa chigadzirwa

Munzira iyi, limestone (CaCO3) kana quicklime (CaO2) zvinogona kushandiswa semushonga unonyudza. Kusarudzwa kwechinhu chinonyudza chinogona kuwedzerwa chakaoma kana semushonga unonyudza kunoitwa zvichienderana nemamiriro emuganhu chaiwo wepurojekiti. Kuti ubvise sulphur oxides (SOx) nezvimwe zvikamu zvine acidic (HCl, HF), gasi remushonga rinoiswa mukubatana kwakasimba neslurry ine mushonga munzvimbo inonyudza. Nenzira iyi, nzvimbo yakakura kwazvo inogoneka inowanikwa kuti ishandiswe. Munzvimbo inonyudza, SO2 kubva mugasi remushonga unonyudza inosangana nechinhu chinonyudza kuti igadzire calcium sulphite (CaSO3).

Dombo re limestone rine calcium sulphite rinounganidzwa mumugodhi wekunyudza. Dombo re limestone rinoshandiswa kuchenesa magasi emvura rinowedzerwa nguva dzose mumugodhi wekunyudza kuitira kuti kugona kwemugodhi kuchenesa kurambe kwakafanana. Dombo racho rinozopombwa zvakare munzvimbo yekunyudza.

Nekufemera mhepo mugomba rinonyudza mvura, gypsum inoumbwa kubva mucalcium sulphite uye inobviswa kubva mukuita uku sechikamu chetsvina. Zvichienderana nezvinodiwa zvemhando yepamusoro yechigadzirwa chekupedzisira, kurapwa kwakawedzerwa kunoitwa kuti gypsum ibudiswe inotengeswa.

Uinjiniya hwezvirimwa

Mukubvisa sulphurization yemhepo ine mvura, ma open spray tower absorbers akakamurwa kuita nzvimbo mbiri huru. Idzi ndidzo nzvimbo dzinonyudzwa mvura dzinosangana nemhepo ine mvura uye nzvimbo inonyudzwa mvura, umo mvura ine limestone inobatwa uye inounganidzwa. Kudzivirira kudonha kwemvura mumhepo inonyudzwa mvura, mvura inonyudzwa inosungirirwa nenzira dzekusanganisa mvura.

Gasi rinoyerera richipinda muchinhu chinonyudza mvura pamusoro pehuwandu hwemvura uye richipfuura nenzvimbo inonyudza mvura, iyo ine huwandu hwekupfapfaidza hunowirirana uye chinobvisa mhute.

Dota re limestone rinosvetwa kubva mu absorber sump rinopfapfaidzwa zvakanaka pamwe chete uye rinopesana ne flue gas kuburikidza ne spraying levels. Kurongeka kwema nozzles mu spraying tower kwakakosha zvikuru pakubvisa absorber. Saka, kugadzirisa kuyerera kwemvura kwakakosha zvikuru. Mu mhute rekubvisa mvura, madonhwe anotorwa kubva kunzvimbo inonyudzwa nemvura ne flue gas anodzoserwa kumaitiro acho. Pakubuda kwe absorber, gasi rakachena rinozara uye rinogona kubviswa zvakananga kuburikidza ne cooling tower kana wet stack. Kana zvichidikanwa, gasi rakachena rinogona kupiswa uye kuendeswa kune yakaoma stack.

Mvura inobviswa mugomba rinonyungudika inotanga yabviswa mvura ne hydrocyclones. Kazhinji mvura iyi inonyungudika isati yanyatsoiswa mvura inobviswa kuburikidza nekusefa. Mvura, inowanikwa kubva mukuita uku, inogona kudzoserwa zvakanyanya kumunyungudika. Chikamu chidiki chinobviswa mukufamba kweropa nenzira yekuyerera kwemvura yakasviba.

Kubvisa flue gas desulphurization mumaindasitiri, magwenya emagetsi kana magwenya ekupisa marara kunoenderana nemanozzle anovimbisa kushanda kwakarurama kwenguva yakareba uye anotsungirira mamiriro ekunze akasimba. Nemasisitimu ayo enozzle, Lechler inopa mhinduro dzehunyanzvi uye dzakanangana nekushandiswa kwema spray scrubbers kana spray absorbers pamwe nemamwe maitiro e flue gas desulphurization (FGD).

Kubvisa sulfurization yemvura