Ruwan Kwal
I. Kayayyakin Jiki da Ayyuka
Ruwan kwal-ruwa slurry ne da aka yi da gawayi, ruwa da ƙaramin adadin abubuwan da ake ƙarawa sinadarai. Bisa ga manufar, kwal-ruwa slurry ne zuwa kashi high-tattara coal-ruwa slurry man fetur da kuma kwal-ruwa slurry ga Texaco makera gasification. Ana iya fitar da ruwan kwal-ruwa, a sarrafa shi, adanawa da kunna wuta kuma a kona shi cikin kwanciyar hankali. Kimanin tan 2 na ruwan kwal-ruwa na iya maye gurbin tan 1 na man fetur.
Ruwan kwal-ruwa don ƙonawa ya yi fice a cikin ingantaccen konewa, ceton makamashi da fa'idodin muhalli, ɗayan muhimmin sashi na fasahar kwal mai tsabta. Ana iya jigilar ruwan kwal-ruwa mai nisa mai nisa ta hanyar jigilar bututu tare da ƙarancin saka hannun jari da ƙarancin farashin aiki. Ana iya ƙone ta kai tsaye ba tare da bushewa ba bayan isa tashar tashar, kuma an rufe tsarin ajiya da sufuri gabaɗaya.
Ruwa zai haifar da asarar zafi kuma ba zai iya haifar da zafi a tsarin konewa ba. Saboda haka, taro na kwal ya kamata ya kai wani dangi babban matakin - 65 ~ 70% a gaba ɗaya. Abubuwan da ke tattare da sinadarai kusan 1%. Asarar zafi da ruwa ke haifarwa shine kusan kashi 4% na ƙimar calorific na slurry ruwan kwal. Ruwa wani abu ne da babu makawa a cikin iskar gas. Daga wannan ra'ayi, za a iya saukar da maida hankali na kwal zuwa 62% ~ 65%, wanda zai iya haifar da haɓakar haɓakar iskar oxygen.
Domin sauƙaƙe konewa da halayen iskar gas, slurry na kwal-ruwa yana da wasu buƙatu don ingancin kwal. A babba iyaka na barbashi size na kwal-ruwa slurry ga man fetur (da barbashi size da wani izinin kudi na ba kasa da 98%) ne 300μm, da kuma abun ciki na kasa da 74μm (200 raga) ba kasa da 75%. Lalacewar kwal-ruwa slurry don iskar gas ya ɗan ɗanɗana fiye da na kwal-ruwa slurry don mai. An ba da izinin iyakar girman girman barbashi don isa 1410μm (raga 14), kuma abun ciki na ƙasa da 74μm (raga 200) shine 32% zuwa 60%. Domin sanya slurry na kwal-ruwa mai sauƙi don yin famfo da atomize, slurry na kwal-ruwa shima yana da buƙatu don ruwa.
A yanayin zafi na ɗaki da juzu'in shear na 100s, ana buƙatar bayyanar danko gaba ɗaya kada ya wuce 1000-1500mPas. Ruwan kwal-ruwa da ake amfani da shi wajen jigilar bututun mai nisa yana buƙatar bayyananniyar ɗanƙon da bai wuce 800mPa·s ƙarƙashin ƙananan zafin jiki ba (mafi ƙarancin zafin jiki na shekara don bututun da aka binne a ƙarƙashin ƙasa) da ƙimar juzu'i na 10s-1. Bugu da ƙari, ana kuma buƙatar cewa slurry na kwal-ruwa yana da ƙananan danko lokacin da yake cikin yanayi mai gudana, wanda ya dace don amfani; lokacin da ya daina gudana kuma yana cikin matsayi mai mahimmanci, zai iya nuna babban danko don sauƙin ajiya.
Zaman lafiyar kwal-ruwa a lokacin ajiya da sufuri yana da matukar muhimmanci, domin slurry-water slurry cakude ne na daskararru da ruwa, kuma yana da sauƙi a raba daskarewa da ruwa, don haka ana buƙatar kada a samar da "hazo mai wuya" yayin ajiya da sufuri. Abin da ake kira "hard hazo" yana nufin hazo da ba za a iya mayar da shi zuwa yadda yake ta asali ba ta hanyar motsa slurry na kwal-ruwa. Ƙarfin kwal-ruwa slurry don kula da aikin rashin samar da hazo mai ƙarfi ana kiransa "kwanciyar hankali" na slurry na kwal-ruwa. Ruwan kwal-ruwa tare da rashin kwanciyar hankali zai yi tasiri sosai ga samarwa da zarar hazo ya faru yayin ajiya da sufuri.
II. Bayanin Fasahar Shirye-Shiryen Kwal-Ruwa
Ruwan kwal-ruwa yana buƙatar babban taro na kwal, girman barbashi mai kyau, ruwa mai kyau, da kyakkyawan kwanciyar hankali don guje wa hazo mai ƙarfi. Zai yi wahala saduwa da duk kaddarorin da ke sama a lokaci guda, saboda wasu daga cikinsu an iyakance su. Alal misali, haɓaka ƙaddamarwa zai sa danko ya karu kuma ruwa ya lalace. Kyakkyawan ruwa da ƙananan danko zai sa kwanciyar hankali ya fi muni. Sabili da haka, wajibi ne don saka idanu da maida hankali a ainihin lokacin. TheLonnmetermita yawa na hannuyana da daidaito har zuwa 0.003 g/ml, wanda zai iya cimma ma'aunin ma'aunin ma'auni daidai kuma yana sarrafa daidai adadin slurry.
1. Daidai Zaɓi Danyen Kwal don Tsagewa
Baya ga biyan buƙatun masu amfani da ƙasa, ingancin kwal don ƙwanƙwasa dole ne kuma ya mai da hankali ga abubuwan da ke daɗaɗawa - wahalar bugun jini. Wasu gawayi suna da sauƙi don yin ɗumbin ruwan kwal-ruwa mai girma a ƙarƙashin yanayin al'ada. Ga sauran garwashin, yana da wahala ko yana buƙatar tsari mai rikitarwa mai rikitarwa da tsada mai girma don yin ɗimbin ruwan kwal-ruwa mai girma. Abubuwan da ake amfani da su na kayan da aka yi amfani da su don ƙwanƙwasa suna da tasiri mai yawa akan zuba jari, farashin samarwa da kuma ingancin kwal-ruwa slurry na pulping shuka. Don haka, ya kamata a yi amfani da dokar kaddarorin kwal, sannan a zabi danyen kwal don pulping bisa ga ainihin bukatu da ka'idojin yuwuwar fasaha da daidaiton tattalin arziki.
2. Daraja
Coal-ruwa slurry ba kawai na bukatar kwal barbashi size isa kayyade fineness, amma kuma yana bukatar mai kyau barbashi size rarraba, sabõda haka, kwal barbashi na daban-daban masu girma dabam na iya cika juna, rage girman gibba tsakanin kwal barbashi, da kuma cimma mafi girma "stacking yadda ya dace". Ƙananan giɓi na iya rage yawan ruwan da ake amfani da su, kuma yana da sauƙi don yin babban taro na kwal-ruwa. Wannan fasaha wani lokaci ana kiranta da "Grading".
3. Pulping tsari da kayan aiki
A karkashin ba raw kwal barbashi size halaye da grindability yanayi, yadda za a yi barbashi size rarraba na karshe samfurin na kwal-ruwa slurry cimma wani mafi girma "stacking yadda ya dace" na bukatar wani m selection na nika kayan aiki da pulping tsari.
4. Zaɓan Ayyuka-Matching Additives
Domin yin kwal-ruwa slurry cimma babban maida hankali, low danko, kuma mai kyau rheology da kwanciyar hankali, wani karamin adadin sinadaran jamiái, da ake magana a kai a matsayin "additives", dole ne a yi amfani da. Kwayoyin na ƙari aiki a kan mu'amala tsakanin kwal barbashi da ruwa, wanda zai iya rage danko, inganta watsar da kwal barbashi a cikin ruwa, da kuma inganta kwanciyar hankali na kwal-ruwa slurry. Adadin abubuwan ƙarawa yawanci shine 0.5% zuwa 1% na adadin kwal. Akwai nau'ikan ƙari da yawa, kuma tsarin ba a daidaita shi ba kuma dole ne a ƙayyade ta hanyar bincike na gwaji.
Lokacin aikawa: Fabrairu-13-2025
