I-carbon engaphezulu kune-lignite, kodwa ilula ngaphezu kwelahle
Ilahle-bituminous coal ithathwa njengamalahle amnyama, nangona ukubonakala kwayo kuhluka kumnyama omnyama ukuze kuthobe umnyama omnyama. Ukuhambelana kwayo kufana nobunzima kwaye buqinile ukuba buthambile kwaye bubuhlungu ngenxa yesigaba sayo esiphakathi - phakathi kwelahle kunye ne-brown (lignite). Amalahle asetyenziswa ngokubanzi ukuvelisa amandla okuqhuba umbane kunye neenjongo zoshishino. Ngamanye amaxesha kuthiwa "i-black lignite," i-sub-bituminous coal ayizinzile xa ibonakaliswe emoyeni; kudla ukutshatyalaliswa.
Olu hlobo lwamalahle luqukethe ubuninzi obuninzi kunye nomoya ongeyantlukwano kunezinye iindidi zelahle, kodwa iinqanaba eziphantsi kwesulfure. I-sub-bituminous coal inexabiso lokushisa elimalunga nama-8 500 ukuya kuma-13,000 kwi-Btu ngepounds, njengemigodi.
Iimpawu ze-Co-Bituminous Coal
Ilahle-bhitumayo i-bituminous ayikho i-coking kwaye iqukethe isulfure engaphantsi kodwa iyanamanzi amaninzi - malunga nama-10 ukuya kuma-45 ekhulwini-kunye nemeko engathandekiyo-ukuya kuma-45 ekhulwini-kunezinye iindidi zelahle. Unomxholo wekhabhoni we-35 ukuya kwi-45; Umxholo walo othuli uhlala kuma-10 ekhulwini. Isiqulatho somlahle welahle lomhlaba ngokubanzi phantsi kwama-2 ekhulwini ngokulinganisa. I-nitrogen yenza malunga ne-0.5 ukuya kwi-2 ekhulwini lomlinganiselo welahle.
Impembelelo yendalo
I-sub-bituminous coal incummy ingakhokelela ekukhuphekeni kwezinto ezinobungozi ezibandakanya umbandela (PM), i-oxyx sulfur (SOx), i-nitrogen oxides (NOx), kunye ne-mercury (Hg). Ilahle-bhitumayo i-bituminous ivelisa umlotha onomxholo ophezulu we-alkali kunezinye i-ash ash.
Esi sibonakaliso sinokukunceda ukunciphisa imvula ye-asidi ebangelwa yimiphumo yamandla okuchithwa kwamandla omlilo. Ukongeza amalahle angaphantsi kwe-bituminous kwi-bituminous amalahle azisa ii-alkaline byproducts ezibophelela kwiimveliso zesulfure ezikhutshwe ngumbali wombane , ngoko ke ukunciphisa ukubunjwa kwemimoya ye-acid.
Xa ilahle-bituminous amalahle itshiswa kumaqondo aphezulu, ukukhutshwa kwe-carbon monoxide kuyanciphisa.
Ngenxa yoko, iinqununu ezincinane zomlilo kunye nokugcinwa kakuhle kwazo zinokunyusa ukwanda kwengcoliseko. Abantu abasebenzisa amalahle ase-bituminous kwiofisi zasekhaya okanye iibhokisi zemililo bathi izikhuni ezinkulu zivelisa umsi omncinci kwaye akukho zintlanzi. Umxholo ophakamileyo othungayo unokuba yimpendulo, nangona kunjalo.
Ukukhathazeka kokusingqongileyo kuye kwabangela ukuba izitshixo zamandla kagesi zisetyenziswe i-sub-bituminous amalahle kunye ne-lignite endaweni yelahle. Ngokuqhelekileyo, amalahle aphethwe ngamanzi asetsheni aseMelika asezantsi asezantsi aseUnited States aqulethe amanqanaba e-sulfure aphantsi, okwenza kube lula ukusetyenziswa kwezoshishino, ngokutsho kwe-Arhente yokuKhuselwa kweNdalo. I-EPA ibhala kwakhona ukuba malunga neepesenti ezingama-95 ze-sulfure kwilahle elikhanyayo liphuma emkhathini njengegesi kodwa i-sub-bituminous coal iphuma ngaphantsi xa itshisiwe.
Ezinye Iinkcukacha Nge-Co-Bituminous Coal
Ukufumaneka : I-Moderate. Phantse iipesenti ezingama-30 zezibonelelo zamathambo ezikhoyo eUnited States zi-sub-bituminous. I-United States idlulele kwamanye amazwe ngobuninzi bezinto ezincinci zamathambo ezinamalahle, kunye nezibonelelo eziqikelelweyo ezimalunga nama-300,000 yezigidi. Amanye amazwe anezixhobo ezibonakalayo ziquka iBrazil, i-Indonesia ne-Ukraine.
Indawo yokuMbiwa: i-Wyoming, i-Illinois, i-Montana kunye nezinye indawo ezisentshonalanga kumlambo we-Mississippi.
Usetyenziso : Iinqanaba eziphantsi kwe-bituminous 3rd in heat and carbon content xa kuthelekiswa nezinye iindidi zamalahle, ngokwe-ASTM D388 - 05 Uhlobo oluqhelekileyo lwamalahle ngamaGlasi.
Funda ngezinye iindidi zelahle
# 3 I-Coal-Sub-Bituminous ekhethiweyo