Pogwiritsa ntchito njira yochotsera mpweya woipa (FGD) ya fakitale yamagetsi yogwiritsa ntchito malasha, kusanthula kumeneku kukuyang'ana mavuto omwe ali m'makina achikhalidwe a madzi otayira a FGD, monga kapangidwe koyipa komanso kuchuluka kwa kulephera kwa zida. Kudzera mu kukonza bwino ndi kusintha kwaukadaulo kambiri, kuchuluka kwa madzi otayira kunachepetsedwa, zomwe zinapangitsa kuti makinawo azigwira ntchito bwino komanso kuchepetsa ndalama zogwirira ntchito ndi kukonza. Mayankho ndi malingaliro othandiza adaperekedwa, zomwe zinapereka maziko olimba kuti madzi otayira asatuluke mtsogolo.
1. Chidule cha Dongosolo
Malo opangira magetsi opangidwa ndi malasha nthawi zambiri amagwiritsa ntchito njira ya limestone-gypsum wet FGD, yomwe imagwiritsa ntchito limestone (CaCO₃) ngati chinthu choyamwitsa. Njirayi imapanga madzi otayira a FGD. Pankhaniyi, makina awiri a FGD onyowa amagawana chipangizo chimodzi choyeretsera madzi otayira. Gwero la madzi otayira ndi gypsum cyclone overflow, yomwe imakonzedwa pogwiritsa ntchito njira zachikhalidwe (njira ya thanki zitatu) yokhala ndi mphamvu yopangidwa ya 22.8 t/h. Madzi otayira okonzedwa amapopedwa makilomita 6 kupita kumalo otayira kuti achotse fumbi.
2. Nkhani Zazikulu mu Dongosolo Loyambirira
Chidutswa cha mapampu oyezera madzi nthawi zambiri chinkatuluka kapena kulephera, zomwe zinkalepheretsa kumwa mankhwala mosalekeza. Kulephera kwakukulu kwa makina osindikizira a plate-and-frame ndi mapampu oyezera madzi kunawonjezera kufunikira kwa antchito ndikulepheretsa kuchotsa matope, zomwe zinachepetsa kutayikira kwa madzi mu ma clarifiers.
Madzi otayira, ochokera ku gypsum cyclone overflow, anali ndi kuchuluka kwa pafupifupi 1,040 kg/m³ ndi kuchuluka kolimba kwa 3.7%. Izi zinapangitsa kuti makinawo asamatulutse madzi okonzedwa nthawi zonse komanso kuwongolera kuchuluka kwa ma ion owopsa mu absorber.
3. Zosintha Zoyambirira
Kukonza Mlingo wa Mankhwala:
Matanki ena a mankhwala adayikidwa pamwamba pa makina a triple-tank kuti atsimikizire kuti mlingo wokhazikika umagwiritsidwa ntchito pogwiritsa ntchito mphamvu yokoka, yolamulidwa ndimita yowunikira pa intaneti.
Zotsatira: Ubwino wa madzi unali wabwino, ngakhale kuti madzi anali kufunikabe kutayikira. Kutulutsa madzi tsiku lililonse kunachepa kufika pa 200 m³, zomwe sizinali zokwanira kuti machitidwe awiri a FGD agwire ntchito bwino. Ndalama zolipirira madzi zinali zambiri, pafupifupi 12 CNY/tani.
Kugwiritsanso Ntchito Madzi Otayira Poletsa Fumbi:
Mapampu anaikidwa pansi pa chowunikira kuti atumize madzi otayira ku malo osungira phulusa kuti asakanizidwe ndi kunyowa.
Zotsatira zake: Kuchepa kwa mphamvu pamalo otayira zinthu koma kunapangitsa kuti pakhale dothi lochuluka komanso kusatsatira miyezo yotulutsira zinthu.
4. Njira Zowonjezerera Zomwe Zilipo Panopa
Ndi malamulo okhwima okhudza chilengedwe, kukonza bwino kwa dongosolo kunali kofunikira.
4.1 Kusintha kwa Mankhwala ndi Kugwira Ntchito Mosalekeza
Kusunga pH pakati pa 9-10 kudzera mu kuchuluka kwa mankhwala:
Kugwiritsa ntchito tsiku ndi tsiku: laimu (45 kg), ma coagulants (75 kg), ndi ma flocculants.
Anaonetsetsa kuti madzi oyera a 240 m³/tsiku atuluka pambuyo poti makina agwira ntchito nthawi ndi nthawi.
4.2 Kugwiritsanso Ntchito Tanki ya Slurry yadzidzidzi
Kugwiritsa ntchito thanki yadzidzidzi kawiri:
Panthawi yopuma: Kusunga matope.
Pa nthawi yogwira ntchito: Kutulutsa madzi mwachilengedwe kuti madzi atuluke bwino.
Kukonza bwino:
Anawonjezera ma valve ndi mapaipi pamlingo wosiyanasiyana wa thanki kuti athe kugwira ntchito mosavuta.
Gypsum yothira madzi inabwezeretsedwa ku dongosolo kuti ikachotsedwe kapena kugwiritsidwanso ntchito.
4.3 Kusintha kwa Dongosolo Lonse
Kuchepetsa kuchuluka kwa zinthu zolimba m'madzi otayira omwe akubwera mwa kusuntha filtrate kuchokera ku makina ochotsera madzi a vacuum belt kupita ku thanki yosungira madzi otayira.
Kupititsa patsogolo mphamvu ya sedimentation mwa kufupikitsa nthawi yokhazikika mwa kuyika mankhwala m'matanki adzidzidzi.
5. Ubwino wa Kukonza Zinthu Mwanzeru
Kukweza Mphamvu:
Kugwira ntchito mosalekeza ndi kutulutsa madzi otayira oposa 400 m³ tsiku lililonse.
Kulamulira bwino kuchuluka kwa ayoni mu absorber.
Ntchito Zosavuta:
Zinathetsa kufunika kwa makina osindikizira a plate-and-frame.
Kuchepetsa ntchito yosamalira matope.
Kudalirika Kwambiri kwa Dongosolo:
Kusinthasintha kwakukulu pa ndondomeko zokonzera madzi otayira.
Kudalirika kwa zida zapamwamba.
Kusunga Ndalama:
Kugwiritsa ntchito mankhwala kumachepetsedwa kukhala laimu (1.4 kg/t), ma coagulants (0.1 kg/t), ndi ma flocculants (0.23 kg/t).
Mtengo wochizira watsika kufika pa 5.4 CNY/tani.
Ndalama zosungidwa pachaka za pafupifupi 948,000 CNY pamitengo ya mankhwala.
Mapeto
Kukonza bwino njira ya madzi otayira ya FGD kunapangitsa kuti ntchito iyende bwino kwambiri, kuchepetsa ndalama, komanso kutsatira miyezo yokhwima yokhudza chilengedwe. Njirazi zimagwira ntchito ngati chizindikiro cha njira zofanana zomwe zikufuna kuti madzi otayira asakhale otayira komanso kuti asapitirire kwa nthawi yayitali.
Nthawi yotumizira: Januwale-21-2025
