LNG - ibyuma bya manganese ndende hamwe nibisabwa byo gusudira bikoreshwa

Mu mwaka wa 2010, POSCO yo muri Koreya y'Epfo, Daewoo Shipbuilding hamwe n’imiryango itanu ikomeye ku isi yashyize mu bikorwa umushinga wo “guteza imbere icyuma kinini cya manganese hamwe n’ibikoresho byo gusudira ku bushyuhe buke cyane”, kandi bigera ku musaruro mwinshi w’ibyuma bya manganezi mu bigega bya LNG muri 2015. Muri Kamena 2022, kugira ngo icike icyuho cya tekiniki, Daewoo Shipbuilding & Marine Engineering (DSME) yo muri Koreya y'Epfo na POSCO izaba ifite iya mbere ku isi kugeza shyiramo ibyuma byinshi bya manganese LNG ibigega byo kubika ibitoro ku birori bya LNG bitwara ibicuruzwa binini cyane (VLCCs), maze avuga ko byateje imbere tekinoroji yo gukora ibitoro biva mu bicanwa kugeza kubisudira no kubikora.

1. Icyuma kinini cya manganese ni iki?

Ibyuma byinshi bya manganese kububiko bwa LNG nicyuma kivanze kirimo manganese hagati ya 22-25%, gifite ubushyuhe buke bwo guhangana nubushyuhe buke, ibyo bikaba bigaragara cyane kuruta ibikoresho byabitswe bya LNG Nibikundiro bishya byibigega bya LNG. ibikoresho Koreya yepfo yitangiye ubushakashatsi niterambere mumyaka irenga icumi.

2.Gusesengura muri make ubwoko bwibyuma nibyiza byabyo nibibi kubigega bya LNG Ibikoresho byacu byo guhuza byo gusudira birashobora kuba byujuje ibi bisabwa bikomeye: Kubera ko ibigega binini bya LNG bibika ibikoresho byibanze byubwato butangiza ibidukikije hamwe ninganda zose za LNG, ibipimo bya tekiniki birakomeye cyane kandi ikiguzi gihenze. Ubusanzwe LNG ibikwa kandi igatwarwa munsi yubushyuhe bukabije bwa -163 ° C. “Amategeko mpuzamahanga agenga iyubakwa n'ibikoresho by'amato atwara imyuka yanduye mu bwinshi” yitwa “IGC Code”. Ibikoresho bine byo hasi yubushyuhe bushobora gukoreshwa mubwubatsi bwa LNG harimo: ibyuma bya aluminium alloy, Autriche Tensitic ibyuma bitagira umuyonga, ibyuma bya austenitike Fe-Ni alloy ibyuma (bizwi kandi nka Invar ibyuma) na 9% Ni ibyuma (reba Imbonerahamwe 1 kubisobanuro birambuye), mugihe 9% Ni ibyuma nibikoreshwa cyane kandi bikoreshwa cyane mubigega bya LNG. Ariko ibibi ni uko igiciro kikiri hejuru, uburyo bwo gutunganya buragoye, imbaraga ni nkeya, kandi nikel iri mubicuruzwa ni myinshi. Mu myaka yashize, igiciro cya nikel cyakomeje kwiyongera, kandi igiciro cyibicuruzwa cyiyongereye cyane.

Ibikoresho 4 bya kirogenike bishobora gukoreshwa mubwubatsi bwa LNG munsi ya "IGC Code"

Kugereranya imbaraga hagati yibikoresho bisanzwe bikoreshwa muri LNG nicyuma gishya cya manganese

Ultra-low ubushyuhe bwo hejuru-manganese ibyuma, bihuza imbaraga nyinshi, ubukana bwinshi, nigiciro gito, bifite ibyifuzo byinshi byo gukoresha mugihe kizaza cya LNG ibika lisansi hamwe no kurengera ibidukikije amasoko yo kubika peteroli nka amoniya yuzuye, hydrogène y'amazi, na methanol.

Ibigize nibisabwa byicyuma cya manganese

Ibigize imiti (Inyandiko ya ASTM)

Imyitwarire ya mashini

Structure Imiterere ya Crystal: isura ya cubic lattice (γ-Fe)

Temperature Ubushyuhe bwemewe ＞ -196 ℃

Imbaraga Zitanga ＞ 400MPa (58ksi)

Strength Imbaraga zingana: 800 ~ 970MPa (116-141ksi)

● Charpy V-notch test test> 41J kuri -196 ℃ (-320 ℉)

Kumenyekanisha uruganda rwacu rwo hejuru ibyuma bya manganese bihuye nibikoreshwa byo gusudira

Mu myaka yashize, twihaye ubushakashatsi no guteza imbere ibyuma bya manganese byo mu rwego rwo hejuru bihuza ibikoresho byo gusudira mu bigega bya LNG, kandi twateje imbere neza ibikoresho byo gusudira bishobora guhuza imiterere y’ibikoresho fatizo bya manganese byo mu bubiko bwa LNG. Ibintu byihariye bigaragara mu mbonerahamwe ya 2.

Ibikoresho bya mikoranike yicyuma kinini cya manganese gihuye nogusudira ibikoresho byabitswe

Ps.

Weldability hamwe nicyitegererezo cyerekana manganese ibyuma byo gusudira ibikoresho byo kubika LNG

Ubudodo bwibikoresho byo gusudira ibyuma bya manganese birerekanwa kuburyo bukurikira

Electrode (GER-HMA) yuzuye gusudira nyuma yo gukuraho slag 

Electrode (GER-HMA) inguni yo gusudira nyuma yo gukuraho slag    

Inkoni yo gusudira (GER-HMA) mbere na nyuma yo kuzuza gusudira gusiba

Ifu yifu yibyuma arc (GCR-HMA-S) yerekana

Ingero z'ibyuma byo hejuru byo gusudira manganese ibyuma byo gusudira byerekanwe kuburyo bukurikira 

Feld welding (1G) icyitegererezo cyerekana 

Gusudira guhagaritse (3G) icyitegererezo cyerekana

Gusudira neza (1G) byerekana icyitegererezo

Gusudira neza (1G) byerekana icyitegererezo

P.