Mamwe carbon yakawanda kudarika lignite, asi yakanyanya kudarika bhituminous coal
Muchengetedzwa wemarara anoonekwa semasema, kunyange chitarisiko chayo chinoparadzaniswa nekupenya kwakasviba kunopisa mutsvuku. Maitiro ayo akafanana kubva kune akaoma uye akasimba kuti anyoroke uye asvike pamusana pechipfuva chacho chepakati-pakati peganda uye marara (lignite). Mazi anowanzoshandiswa mukugadzira simba remhepo uye zvinangwa zvemabhizimisi. Dzimwe nguva anonzi "black lignite," inonzi-bituminous coal haisi yakasimba painobudiswa kumhepo; zvinowanzoparadzana.
Iko rudzi rwemalahle rine humwe hunyoro uye chinhu chisingafadzi kupfuura mamwe mavara emarara, asi sulfuri shoma mazinga. Iko-ganda rinopisa rine huni hunopisa huri pakati pe 8,500 kusvika 13,000 Btu pound, iyo yakaita mined.
Zviratidzo zveSt-Bituminous Coal
Iko-in-bituminous coal haisi-coking uye ine sulfuri shoma asi hunyoro huzhinji - inenge 10 kusvika ku45 muzana - uye nyaya isina kuvhiringidzika - kusvika kune 45 muzana - kupfuura mamwe mavara emarara. Iine 35 kusvika 45 muzana carbon content; hupfu hwaro hwehuni hunosvika kusvika 10 muzana. Mafuta eSulfur ane huwandu inowanikwa pasi pe2 muzana kuburikidza nechiyero. Nitrogen inoumba anenge 0.5 kusvika 2 muzana yemutoro wemarasha.
Environmental Impact
Kushanda kwemazimbe anopisa moto kunogona kutungamirira kumhepo inokonzera yakaipa inosanganisira zvimwe zvinhu (PM), sulfur oxides (SOx), nitrogen oxides (NOx), uye mercury (Hg). Mazimbe emagetsi anochera anogadzirawo madota ane zvakasvibiswa zveakariki pane mamwe mashizha emarara.
Izvi zvinogona kubatsira kuderedza mvura yeA acid inowanzokonzerwa nehutsotsi hwemalahle. Kuwedzera mazino e-bituminous kumarara anopinza inotanga mazai e alkaline ayo anosunga sulfuri emiti yakasunungurwa nemarasha , ndokudaro kuderedza kushandiswa kwemhepo inopisa.
Apo ganda re-bituminous rinopisa pamadziririro akareba, kukonzerwa kwaro carbon monoxide kunoderedzwa.
Somugumisiro, zviduku zvitsva zvinopisa uye zvisina kuchengetedzwa zvakanaka zvinogona kuwedzera kucheneswa kwezvinhu. Vanhu vanoshandisa mashizha e-bituminous mumagetsi edzimba kana mabhokisi emoto vanoti mashizha makuru anobudisa utsi hushoma uye hauna clinkers. Kunyanya ivhu rinogona kuva dambudziko, zvisinei.
Zvinhu zvinokonzerwa nezvinokonzerwa nehutachiona zvakakonzera magetsi emagetsi kushandiswa kushandiswa kwema-bituminous charter uye lignite panzvimbo yehavha yakawanda. Kazhinji, mazimbe anochera kubva mumvura yakachena mumadokero kweUnited States ane maodzera sulfuri shoma, izvo zvinoita kuti zvive zvakanaka kumashandisirwo emabhizimisi, maererano neEvironment Protection Agency. IEPA inotarisa kuti inenge 95 muzana ye sulfuri mumagetsi anovhenekera inokonzerwa mumhepo segesi asi mazimbe anocheka anobudisa zvishoma kana apiswa.
Zvimwe Zvinyorwa Pamusoro peSt-Bituminous Coal
Kuwanika : Moderate. Anenge makumi matatu kubva muzana emazana emari emahombekombe emaUnited States ane sub-bituminous. IUnited States inopfuura kupfuura dzimwe nyika muhuwandu hwayo hwema-bituminous coal imidziyo, uye inofungidzirwa yakawanikwa inenge 300 000 mamirioni matani. Dzimwe nyika dzine ruzivo rwakakosha dzinosanganisira Brazil, Indonesia, uye Ukraine.
Nzvimbo dzeMigodhi : Wyoming, Illinois, Montana, nedzimwe nzvimbo kumadokero kweRwizi Mississippi.
Misimboti : Pasi-bituminous ranks 3rd inopisa uye carbon zvigadzirwa zvakaenzaniswa nemamwe marudzi emarasha, maererano neASTM D388 - 05 Kurongeka Kwakawanda Kwemalahle neRo.
Dzidza Neimwe Mhando dzeMarara
# 1 Yakarongwa Mari - Anthracite
# 2 Yakanyorwa Coal - Bituminous
# 3 Yakaiswa Mari-Sub-Bituminous