Daban-daban daga soda ash (sodium carbonate, Na2CO3) ko da yake ana kiransa "alkali", amma a zahiri nasa ne da sinadaran abun da ke ciki na gishiri, da caustic soda (sodium hydroxide, NaOH) ne mai real soluble a cikin ruwa mai karfi alkali, tare da karfi lalata da hygroscopic. dukiya.Soda ash da caustic soda kuma ana kiransu "alkalis masana'antu guda biyu", dukkansu na cikin masana'antar gishiri da sinadarai.Ko da yake sun sha bamban sosai da juna ta fuskar tsarin samarwa da sigar samfur, kamanceniyarsu a cikin sinadarai ya sa su maye gurbinsu zuwa wani matsayi a wasu fagage na ƙasa, kuma yanayin farashin su kuma yana nuna kyakkyawar alaƙa.
1. Daban-daban hanyoyin samarwa
Caustic soda yana cikin tsakiyar tsakiyar sarkar masana'antar chlor-alkali.A hankali masana'antar samar da ita an maye gurbinsu da electrolysis daga hanyar caustic a farkon, kuma a ƙarshe sun samo asali zuwa hanyar ionic membrane electrolysis na yanzu.Ya zama hanyar da ake amfani da ita wajen samar da soda a cikin kasar Sin, wanda ya kai fiye da 99% na jimlar, kuma tsarin samar da shi yana da haɗin kai.An raba tsarin samar da ash na soda zuwa hanyar ammonia alkali, hada hanyar alkali da kuma hanyar alkali ta dabi'a, wanda hanyar ammonia alkali ya kai kashi 49%, hadewar hanyar alkali ya kai kashi 46% kuma tsarin alkali na halitta ya kai kusan kashi 5%.Tare da samar da aikin Trona na Yuanxing Energy a shekara mai zuwa, za a kara yawan adadin trona.Farashin da riba na matakai daban-daban na samar da soda ash sun bambanta sosai, daga cikinsu farashin trona shine mafi ƙasƙanci.
2. Daban-daban nau'ikan samfuran
Akwai nau'ikan soda caustic guda biyu da aka saba akan kasuwa: soda ruwa da soda mai ƙarfi.Soda ruwa za a iya raba zuwa 30% ruwa tushe, 32% ruwa tushe, 42% ruwa tushe, 45% ruwa tushe da 50% ruwa tushe bisa ga taro juzu'i na sodium hydroxide.Mahimman bayanai na al'ada shine 32% da 50%.A halin yanzu, fitar da alkali ruwa sama da kashi 80% na jimlar, kuma 99% caustic soda lissafin kusan 14%.Soda ash da ke yawo a kasuwa ya kasu kashi alkali mai haske da kuma alkali mai nauyi, dukkansu suna cikin yanayi mai inganci kuma ana bambanta su gwargwadon yawa.A girma yawa na haske alkali ne 500-600kg/m3 da girma yawa na nauyi alkali ne 900-1000kg/m3.Babban alkali yana da kusan 50-60%, bisa ga bambancin farashin tsakanin su biyun yana da sararin daidaitawa 10%.
3. Hanyoyi daban-daban da hanyoyin sufuri
Siffofin jiki daban-daban suna yin caustic soda da soda ash daban a yanayin sufuri da hanya.Liquid alkali sufuri yawanci sanya daga talakawa carbon karfe tank truck, ruwa alkali taro ne mafi girma fiye da 45% ko musamman ingancin bukatun ya kamata a yi da nickel bakin karfe tank truck, Alkali ne kullum amfani 25kg uku-Layer roba saka jakar ko baƙin ƙarfe guga.Marufi da ajiya na soda ash abu ne mai sauƙi, kuma ana iya haɗa shi a cikin jaka biyu da guda ɗaya na filastik saƙa.A matsayin sinadari mai haɗari mai haɗari, ruwa alkali yana da ƙaƙƙarfan samar da yanki kuma wuraren tallace-tallace sun fi mayar da hankali a Arewa da Gabashin Sin, yayin da samar da alkali mai ƙarfi ya ta'allaka ne a arewa maso yammacin kasar Sin.Yankin da ake samarwa na soda ash yana da mahimmanci, amma wurin sayar da shi ya warwatse.Idan aka kwatanta da soda, jigilar alkali mai ruwa ya fi ƙuntata, fiye da kilomita 300 a cikin motar.
Lokacin aikawa: Nuwamba-30-2022