Furfural yog cov khoom siv raw ntawmKev haus dej cawv plaub hau, uas yog tau los ntawm kev tawg thiab dehydrating polypentose muaj nyob hauv cov khoom lag luam ua liaj ua teb thiab sab nraud. Furfural yog hydrogenated rauFurfural CawvNyob rau hauv cov kev mob ntawm catalyst, thiab yog cov khoom siv tseem ceeb rau furfuran cob muaj lawm.Kev haus dej cawv plaub hauyog ib qho tseem ceeb organic cov khoom siv raw. Cov neeg siv khoom tseem ceeb tsim cov furfural, furfuran cob, furfuryl cawv - urea formin resin, yas kuj tseem siv cov roj hmab txiv ntoo, cov roj hmab, kuab tshuaj thiab hluav taws kub. Ib qho ntxiv, nws tseem yog siv dav hauv kev lag luam xws li cov roj, hluavtaws fibers, roj hmab, tshuaj tua kab thiab khoom siv. Nyob rau tib lub sij hawm tuaj yeem tsim cov yas ua kom yooj yim, txias kuj yog qhov zoo dua li kev haus dej cawv thiab cov oxanol. Calcium gluconate yog tsim. Synthesis ntawm dyes, tshuaj nruab nrab, ua cov tshuaj nruab nrab ntawm cov kev tswj hwm, ntau lawm ntawm pyridine.
Cov lus piav qhia: tsis muaj kua dej yooj yim ntws, tig xim av lossis xim av me me thaum muaj huab cua thiab huab cua. Nws muaj qhov iab iab.
Solubility: tuaj yeem ua kom tiav nrog dej, tab sis tsis ruaj khov hauv etzeneol, ether, benzene thiab chloroform, insoluble hauv roj av hydrocarbons.
Cov hau kev ceev:
Kev Kho Mob
Khiav tawm tsam cov neeg ua haujlwm los ntawm thaj chaw tsis huv rau thaj chaw nyab xeeb, txwv tsis pub cov neeg ua haujlwm tsis muaj txiaj ntsig los ntawm kev nkag mus rau thaj chaw tsis huv, thiab txiav cov hluav taws. Cov neeg paub xwm ceev yog qhia kom hnav cov pa rau tus kheej ua pa tawm thiab cov khaub ncaws tiv thaiv. Tsis txhob hu rau lub toast ncaj qha, txhawm rau kom ntseeg tau tias muaj kev nyab xeeb ntawm kev xau. Txau dej los txo cov evaporation. Sib tov nrog xuab zeb lossis lwm yam uas tsis sib xyaw adsorbent rau nqus. Nws yog tom qab ntawd sau thiab thauj mus rau ib lub chaw pov tseg pov tseg rau kev pov tseg. Nws kuj tseem tuaj yeem yaug nrog cov dej ntws ntau thiab diluted rau hauv cov dej khib nyiab. Xws li cov dej xau loj, sau thiab rov ua dua tshiab lossis tsis muaj kev phom sij tom qab pov tseg.
Cov khib nyiab pov tseg cov khib nyiab: Kev ntsuas txoj kev, khib nyiab sib xyaw nrog cov kuab tshuaj uas muaj kuab.
Kev tiv thaiv kev tiv thaiv
Kev tiv thaiv kev ua pa: hnav lub npog ntsej muag thaum muaj peev xwm tiv tauj nws cov vapor. Hnav ua pa rau tus kheej thaum muaj kev cawm thaum muaj xwm ceev lossis khiav dim.
Kev tiv thaiv qhov muag: Hnav tsom iav kev nyab xeeb.
Cov khaub ncaws tiv thaiv: hnav cov khaub ncaws tiv thaiv uas tsim nyog.
Lwm tus: Haus luam yeeb, noj mov thiab haus dej rau ntawm qhov chaw. Tom qab ua haujlwm, ntxuav kom huv. Khw khaws cov khaub ncaws lom-paug cais cais thiab ntxuav lawv ua ntej siv. Them sai sai rau kev nyiam huv tus kheej.
Ua Ntej Kev Ua Haujlwm
Cov tawv nqaij Hu: tshem cov khaub ncaws tsis huv thiab tam sim ntawd yaug kom huv si nrog dej ntws.
Qhov muag Hu: nqa tawv muag tam sim ntawd yaug nrog ntau cov dej ntws ntau.
Inhalation: nrawm tshem tawm ntawm qhov xwm txheej rau huab cua ntshiab. Ua kom koj cov hlab cua ntshiab. Muab cov pa thaum ua pa nyuaj. Thaum ua pa nres, muab cov pa ua pa tam sim ntawd. Nrhiav kev kho mob.
Kev noj haus: Thaum tus neeg mob yog tsaug zog, haus dej sov kom ntau kom ntxias ntuav thiab nrhiav kev kho mob.
Hluav taws kub extinguishing txujci: urist dej, ua npuas ncauj, qhuav hmoov, carbon dioxide, xuab zeb.
Ntim thiab Ntim: Ntim hauv cov hlau nruas, 230kg, 250kg ib chim. Khaws rau hauv qhov chaw txias, qhuav thiab muaj qhov chaw muaj cua zoo. Foob pob hluav taws tau raug txwv tsis pub muaj. Tsis txhob khaws thiab thauj nrog cov kua qaub muaj zog, oxidizing tshuaj thiab khoom noj khoom haus.
Lub Sijhawm Post: Tsib-26-2023