N-METHYL PYRROLIDONE (NMP), formula ya molekyulu :C5H9NO, Chingerezi: 1-Methyl-2-pyrrolidinone, madzi owonekera opanda mtundu mpaka achikasu, fungo la ammonia pang'ono, osakanikirana ndi madzi molingana ndi chilichonse, osungunuka mu ethyl ether, acetone, ester, halogenated hydrocarbons, aromatic hydrocarbons ndi zinthu zina zachilengedwe, Pafupifupi zinthu zonse zachilengedwe zimakhala ndi Chemicalbook mix, bolling point 204℃, flash point 91℃, hygmoscopic, chemical stability, palibe dzimbiri ku carbon steel, aluminiyamu, pang'ono zowononga ku mkuwa. Ili ndi ubwino wa kukhuthala kochepa, kukhazikika kwa mankhwala abwino komanso kukhazikika kwa kutentha, polarity yayikulu, kusinthasintha kochepa, komanso kusagwirizana kosatha ndi madzi ndi zinthu zambiri zachilengedwe. Chogulitsachi ndi mankhwala ofatsa, kuchuluka kovomerezeka mumlengalenga ndi 100PPM.
Katundu ndi kukhazikika:
1. Madzi opanda utoto, kukoma kwa ammonia, poizoni wochepa wa mankhwalawa. Akhoza kusungunuka ndi madzi, kusungunuka mu zinthu zambiri zachilengedwe monga ether ndi acetone. Angathe kusungunula zinthu zambiri zachilengedwe ndi zopanda chilengedwe, mpweya wa polar, zinthu zachilengedwe ndi zopangidwa ndi polima.
2. Kapangidwe ka mankhwala: kokhazikika mu yankho lopanda mpweya. Pambuyo pa maola 8 a 4% ya yankho la sodium hydroxide, 50% ~ 70% ya hydrolysis inachitika. Hydrolysis imachitika mu concentrates ndipo imapanga 4-meth aminocyl acid. Chifukwa cha momwe cymbal base imagwirira ntchito, imatha kupanga ketone kapena sulfurboline.
3. Pakakhala ma catalyst a alkaline, imakhala ndi mphamvu ya olefin, ndipo alkylated reaction imachitika pamalo achitatu. N-methylporide ndi alkaline wofooka ndipo imatha kupanga mchere wa hydrochloride. Imapanga mchere wolemera, monga kutentha ndi nickel bromide mpaka 150℃, kupanga NIBR2(C5H9ON)3, ndi malo osungunuka a 105℃.
Njira yopangira:Imapezeka mwa kuchitapo kanthu kuchokera ku γ-butthochroditettes ndi methylemine. Gawo loyamba la kuchitapo kanthu ndikupanga 4-hydroxyl-N-methyl-base amine ya γ-butthlor ndi methylide, ndipo gawo lachiwiri limaphwanyidwa kuti lipange N-methylpidohone. Kuchitapo kanthu kawiri kungachitike motsatizana mu chubu choyatsira. γ-butthole ndi 1: 1.15, kuthamanga kuli pafupifupi 6MPa, ndipo kutentha kuli 250 ° C. Pambuyo pochitapo kanthu, chinthu chomalizidwa chimapezeka mwa kusungunuka ndi kusungunuka. Mtengo wa ndalama ndi 90%. Ngati kettle anti-ChemicalBook yapangidwa, kuchuluka kwa methylmine ndi nthawi 1.5-2.5 kuposa kuchuluka kwa chiphunzitso, ndipo kukonzekera kwa labotale kumagwiritsidwa ntchito ngati chitsanzo. Pakati pa 500ml hydropower, 2mol γ-butterone ndi 4 Moore liquid zimawonjezedwa kuti zitsekedwe ndikutenthedwa pa 280 ° C kwa maola 4. Mukazizira, tulutsani methamine yochulukirapo, distillation, sonkhanitsani malo oyeretsera 201-202 ° C, pezani pafupifupi 180g ya zinthu, ndipo ndalama zidzakhala pafupifupi 90%. Kugwiritsa ntchito zinthu zopangira (kg/g) γ-butthoboretin 980 methyline (40%) 860.
Ntchito ndi Kusunga:
1. Njira yosungira
Sungani pansi pa mpweya wouma wopanda mpweya, sungani chidebecho chotsekedwa, ndipo sungani pamalo ozizira komanso ouma.
2. Malangizo ogwiritsira ntchito
Pewani kukhudzana ndi moto: Muyenera kupeza malangizo apadera musanagwiritse ntchito. Pewani kukhudzana ndi khungu ndi maso. Pewani kupuma nthunzi ndi utsi. Musayandikire komwe kwachokera moto. -Osasuta. Chitanipo kanthu kuti mupewe kusungunuka kwa mpweya.
3. Njira zodzitetezera ku kusungira
Pali malo ozizira osungiramo zinthu. Sungani chidebecho chitatsekedwa ndipo sungani pamalo ouma komanso opanda mpweya wokwanira. Chidebecho chotseguka chiyenera kutsekedwa mosamala ndikusunga choyimirira kuti chisatuluke. Kuchotsa kusungidwa kwa mpweya wozizira kumakhudza chinyezi.
Kulongedza: 200KG/NG'OMA
Nthawi yotumizira: Marichi-27-2023