Coal Water Slurry
I. Katundu ndi Ntchito Zathupi
Madzi a malasha ndi slurry opangidwa ndi malasha, madzi ndi zochepa zowonjezera mankhwala. Malinga ndi cholingacho, slurry wamadzi a malasha amagawidwa kukhala mafuta okhathamira kwambiri amadzi a malasha komanso matope amadzi a malasha a Texaco ng'anjo yamoto. Madzi a malasha amatha kupopedwa, kupangidwa ndi ma atomu, kusungidwa ndi kuyatsa ndikuwotchedwa pamalo okhazikika. Pafupifupi matani awiri amadzi a malasha amatha kusintha tani imodzi yamafuta amafuta.
Utoto wamadzi a malasha pakuwotcha umapangitsa kuti pakhale mphamvu zowotcha kwambiri, kupulumutsa mphamvu komanso zopindulitsa zachilengedwe, gawo limodzi lofunikira laukadaulo wamakala oyera. Madzi a malasha amatha kunyamulidwa mtunda wautali ndi mayendedwe a mapaipi ndi ndalama zochepa komanso zotsika mtengo zogwirira ntchito. Ikhoza kutenthedwa mwachindunji popanda kutaya madzi m'thupi ikafika ku terminal, ndipo njira yosungiramo ndi yoyendetsa imatsekedwa kwathunthu.
Madzi angayambitse kutentha ndipo sakanatha kutulutsa kutentha pakuyaka. Chifukwa chake, kuchuluka kwa malasha kuyenera kufika pamlingo wapamwamba kwambiri - 65 ~ 70% yonse. Zowonjezera mankhwala ndi pafupifupi 1%. Kutaya kwa kutentha komwe kumachitika chifukwa cha madzi kumakhala pafupifupi 4% ya mtengo wa calorific wa slurry wamadzi a malasha. Madzi ndi zosapeŵeka zopangira mu gasification. Kuchokera pamalingaliro awa, kuchuluka kwa malasha kumatha kutsitsidwa mpaka 62% ~ 65%, zomwe zingayambitse kuyaka kwa okosijeni.
Pofuna kuwongolera kuyaka ndi kusintha kwa gasi, matope amadzi a malasha ali ndi zofunika zina pakuwongolera malasha. Chapamwamba malire a tinthu kukula kwa malasha-madzi slurry kwa mafuta (tinthu kukula ndi chiphaso cha osachepera 98%) ndi 300μm, ndi zili zosakwana 74μm (200 mauna) si zosakwana 75%. The fineness wa malasha-madzi slurry kwa gasification ndi coarser pang'ono kuposa malasha-madzi slurry kuti mafuta. Chapamwamba malire a tinthu kukula amaloledwa kufika 1410μm (14 mauna), ndi zili zosakwana 74μm (200 mauna) ndi 32% kuti 60%. Pofuna kuti matope amadzi a malasha akhale osavuta kupopa komanso kuti atomize, matope amadzi a malasha amakhalanso ndi zofunikira za fluidity.
Pa kutentha kwa chipinda ndi kumeta ubweya wa 100s, kukhuthala kowonekera nthawi zambiri kumafunika kukhala kosaposa 1000-1500mPas. Dothi lamadzi a malasha lomwe limagwiritsidwa ntchito poyendetsa mapaipi akutali limafunikira kukhuthala kowoneka bwino kosapitilira 800mPa·s pansi pa kutentha kochepa (kutentha kotsika kwambiri pachaka kwa mapaipi okwiriridwa pansi) ndi kumeta ubweya wa 10s-1. Kuphatikiza apo, pamafunikanso kuti slurry-madzi a malasha azikhala ndi mamasukidwe otsika akakhala m'malo oyenda, omwe ndi osavuta kugwiritsa ntchito; ikasiya kuyenda ndipo ili pamalo osasunthika, imatha kuwonetsa mamasukidwe apamwamba kuti asungidwe mosavuta.
Kukhazikika kwa slurry yamadzi a malasha pa nthawi yosungira ndi kunyamula n'kofunika kwambiri, chifukwa slurry-madzi a malasha ndi osakaniza a magawo olimba ndi amadzimadzi, ndipo n'zosavuta kupatukana olimba ndi madzi, kotero pamafunika kuti palibe "mvula yovuta" yomwe imapangidwa panthawi yosungira komanso yoyendetsa. Zomwe zimatchedwa "mvula yamkuntho" imatanthawuza mvula yomwe singabwezeretsedwe ku chikhalidwe chake poyambitsa matope amadzi a malasha. Kuthekera kwa slurry wamadzi a malasha kuti apitirizebe kutulutsa mvula yolimba kumatchedwa "kukhazikika" kwa slurry wamadzi a malasha. Kuchuluka kwa madzi a malasha osakhazikika bwino kumakhudza kwambiri kupanga mvula ikagwa panthawi yosungira ndi kuyendetsa.
II. Mwachidule za Coal-Water Slurry Preparation Technology
Kutayira kwamadzi a malasha kumafuna kuchuluka kwa malasha, kukula kwa tinthu tating'onoting'ono, madzimadzi abwino, komanso kukhazikika bwino popewa mvula yovuta. Zidzakhala zovuta kukumana nazo zonse zomwe zili pamwambazi panthawi imodzi, chifukwa zina ndizoletsedwa. Mwachitsanzo, kuwonjezereka kwa ndende kumapangitsa kuti mamasukidwe akayendedwe achuluke komanso kuti fluidity iwonongeke. Good fluidity ndi otsika mamasukidwe akayendedwe adzachititsa bata kuipiraipira. Choncho, m'pofunika kuwunika ndende mu nthawi yeniyeni. TheLonnmeterm'manja kachulukidwe mitaali ndi zolondola mpaka 0.003 g/ml, zomwe zimatha kukwaniritsa muyeso wolondola wa kachulukidwe ndikuwongolera molondola kuchuluka kwa slurry.
1. Molondola Sankhani Malasha Yaiwisi Yopopa
Kuphatikiza pa kukwaniritsa zofunikira za ogwiritsa ntchito kunsi kwa mtsinje, khalidwe la malasha la pulping liyeneranso kumvetsera katundu wake wa pulping - kuvutika kwa pulping. Makala ena ndi osavuta kupanga matope amadzi a malasha ochuluka kwambiri m'mikhalidwe yabwinobwino. Kwa malasha ena, ndizovuta kapena zimafuna njira yovuta kwambiri yopukutira komanso kukwera mtengo kuti apange slurry yamadzi a malasha. Mapangidwe a zinthu zopangira pulping amakhudza kwambiri ndalama, mtengo wopangira komanso mtundu wa slurry wamadzi a malasha pafakitale. Choncho, lamulo la malasha pulping katundu ayenera bwino, ndipo malasha yaiwisi pulping ayenera kusankhidwa malinga ndi zosowa zenizeni ndi mfundo za kuthekera luso ndi zomveka zachuma.
2. Kuwerengera
Malasha-madzi slurry osati kumafuna malasha tinthu kukula kufika fineness mwachindunji, komanso kumafuna zabwino tinthu kukula kugawa, kuti malasha particles amitundu yosiyanasiyana akhoza kudzaza mzake, kuchepetsa mipata pakati malasha particles, ndi kukwaniritsa apamwamba "stacking dzuwa". Mipata yocheperako ingachepetse kuchuluka kwa madzi ogwiritsidwa ntchito, ndipo n'zosavuta kupanga matope ochuluka kwambiri amadzi a malasha. Tekinoloje iyi nthawi zina imatchedwa "grading".
3. Pulping ndondomeko ndi zipangizo
Pansi pa yaiwisi malasha tinthu kukula makhalidwe ndi grindability zinthu, mmene tinthu kukula kugawa chomaliza cha malasha-madzi slurry kukwaniritsa apamwamba "stacking dzuwa" amafuna wololera kusankha akupera zida ndi pulping ndondomeko.
4. Kusankha Magwiridwe Ofananira Zowonjezera
Kuti slurry yamadzi a malasha ikwaniritse ndende yayikulu, kukhuthala pang'ono, komanso rheology yabwino komanso kukhazikika, mankhwala ochepa, omwe amatchedwa "zowonjezera", ayenera kugwiritsidwa ntchito. The mamolekyulu a zina zochita pa mawonekedwe pakati malasha particles ndi madzi, amene angathe kuchepetsa mamasukidwe akayendedwe, kusintha kubalalitsidwa kwa tinthu malasha m'madzi, ndi kusintha bata la malasha-madzi slurry. Kuchuluka kwa zowonjezera nthawi zambiri kumakhala 0.5% mpaka 1% ya kuchuluka kwa malasha. Pali mitundu yambiri ya zowonjezera, ndipo chilinganizocho sichinakhazikitsidwe ndipo chiyenera kutsimikiziridwa kupyolera mu kafukufuku woyesera.
Nthawi yotumiza: Feb-13-2025
