Cov khoom
Tshwj xeeb hauv kev tsim cov cawv propargyl, 1,4 butynediol thiab 3-chloropropyne
Propargyl cawv txheej txheem thiab kev lag luam tsom xam
Cov khoom thiab kev siv ntawm 2 propargyl cawv
2.1 Kev ua haujlwm saum npoo zoo heev thiab dispersion
Propargyl cawv muaj zog polarity thiab hydrophilicity, vim hais tias nws muaj -OH, thiab hydrophobicity yog vim hais tias nws muaj hydrocarbon pab pawg neeg, vim hais tias cov khoom no ua propargyl cawv raws li ib tug uas tsis yog-ionic surfactant, uas qhia tau hais tias kev ua tau zoo heev, nrog zoo tsis tshua muaj foaming, defoaming thiab wettability.Feem ntau cov neeg ua dej ntub dej ua npuas yooj yim, thaum feem ntau cov tshuaj defoaming cov neeg ua haujlwm tsis zoo.Piv nrog rau lwm cov surfactants, alkyl cawv muaj qhov hnyav molecular, kuj yooj yim diffusion, zoo dispersion, zoo wettability thiab tsawg npuas.Ntawm qhov tod tes, alkyl cawv muaj hydrocarbon puag ceg saw pawg, feem ntau cov pab pawg me (feem ntau methyl), muaj ob pawg polar hauv cov qauv.Vim hais tias ntawm cov qauv tshuaj no, alkyl cawv muaj qhov zoo wettability.Ntawm qhov tod tes, alkyl-branched chains hauv propargyl cawv tuaj yeem txo qhov kev nyiam ntawm cov nyob sib ze molecules thiab tsim ib zaj duab xis compressible thiab breathable expansion ntawm cov roj-kua ciam.Yog li ntawd, nws tsis tsuas yog tsis tsim ua npuas ncauj xwb, tab sis kuj muaj qee yam defoaming muaj peev xwm, thiab tuaj yeem tov nrog lwm cov tshuaj defoaming los ua lub luag haujlwm ntau dua.
2.2 Zoo heev hlau corrosion inhibition
Tam sim no, hlau corrosion inhibitors siv nyob rau hauv acidic media feem ntau yog cov organic tebchaw, uas muaj zog adsorption muaj peev xwm ntawm cov hlau nto.Cov qauv molecular ntawm propargyl cawv muaj xws li pawg polar thiab pawg tsis-polar.Nws yog ib qho adsorbent ntawm cov organic corrosion inhibitors.Ntawm qhov tod tes, kev sib koom tes sib koom ua ke tsim ntawm propargyl cawv thiab hlau atoms txhawb cov adsorption ntawm cawv rau qee yam.Nyob rau tib lub sijhawm, PI daim ntawv cog lus hauv propargyl cawv molecule tsis muaj zog, daim ntawv cog lus triple yog qhib, thiab pawg polar hydroxyl nyob ze rau acetylene daim ntawv cog lus, uas txhim kho cov adsorption.Nyob rau hauv nruab nrab alkaline, proparynyl cawv tuaj yeem adsorb Langmuir mus rau cov ntshiab txhuas, uas muaj cov nyhuv corrosion zoo.Propargyl cawv yog vim nws qhov kev ua tau zoo heev, muaj ntau yam kev siv, feem ntau yog siv hauv cov tshuaj intermediates, tooj liab lossis npib tsib xee plating polish, tshuaj tua kab nruab nrab.Tsis tas li ntawd, propargyl cawv kuj tuaj yeem siv los ua cov tshuaj tiv thaiv corrosion ntawm qhov kub thiab txias, siab siab thiab siab concentration hydrochloric acid hauv cov roj thiab cov nkev zoo.
2.3 Kev siv cov cawv cawv propargyl
① Tseem ceeb intermediates hauv organic synthesis: nyob rau hauv kev lag luam kws tshuaj, proparynol yog ib qho tseem ceeb nruab nrab ntawm sodium fosfomycin, calcium fosfomycin, sulfadiazine, thiab kuj yog siv nyob rau hauv zus tau tej cov allyl cawv, acrylic, vitamin A thiab lwm yam khoom siv tshuaj;② Electroplating kev lag luam brightener: propargyl cawv compounds muaj zoo uniformity thiab glossiness, thiab zoo lub teeb nyob rau hauv nickel plating.Yog ib tug raug plaub tiam nickel plating brightener, dav siv nyob rau hauv electroplating kev lag luam;③ Qhov tseem ceeb xeb tshem tawm: proparynyl cawv thiab nws cov dej ntws hauv qab tuaj yeem tiv thaiv kev xeb ntawm hlau, tooj liab, npib tsib xee thiab lwm yam hlau los ntawm cov kua qaub xws li acetic acid, phosphoric acid, sulfuric acid, hydrochloric acid;(4) Petroleum txoj kev loj hlob: kub siab, siab siab thiab siab concentration hydrochloric acid corrosion inhibitors yog qhov tseem ceeb ntawm cov khoom siv zoo acid corrosion inhibitors hauv cov roj thiab roj av;⑤ tuaj yeem siv ua kuab tshuaj, chlorinated hydrocarbon stabilizer, fungicide thiab lwm yam ntaub ntawv raw.
Cov txheej txheem ntau lawm
Tam sim no, txoj kev npaj siv ntau tshaj plaws ntawm propargyl cawv hauv tsev thiab txawv teb chaws yog cov tshuaj tiv thaiv ntawm formaldehyde thiab acetylene los tsim propargyl cawv thiab butynediol, uas propargyl cawv yog ib yam khoom ntawm butynediol.Los ntawm kev kho qhov kev pom zoo ntim ntawm acetylene roj, txhim kho cov tshuaj tiv thaiv siab, txiav txim siab tus nqi pH zoo tshaj plaws, qhov sib piv ntawm propargyl cawv thiab butynediol tuaj yeem ncav cuag 1: 1.6, txhawm rau txhim kho kev xaiv ntawm propargyl cawv.Txheej txheem: Ntxiv tooj liab oxygenated catalyst rau hauv lub tank ua kom muaj zog, ntxiv dej softening, do rau li 20min, thiab ncuav qhov sib tov ntawm catalyst thiab dej rau hauv lub stirring tank nrog lub twj tso kua mis.Cov dej softened thiab formaldehyde tau ntxiv rau lub tank stirred los npaj cov tshuaj tov uas muaj 6% ~ 10% formaldehyde.Cov kua nplawm tau muab tso rau hauv lub reactor nrog lub plunger pub twj tso kua mis raws li ntsuas qhov ntsuas ntws, thiab acetylene compressor tau pib kho cov acetylene txaus tus nqi thiab tswj cov tshuaj tiv thaiv ceev.Qhov tsis siv neeg kub thiab siab tswj qhov system ntawm lub reactor tau pib tswj qhov kub ntawm lub reactor ntawm 90 ~ 130 ℃ thiab lub siab ntawm (2.0 ± 0.1) MPa.Cov tshuaj tiv thaiv kab mob circulates tom qab tso tawm, thiab cov paug rov qab mus rau lub stirred tank.Cov ntsiab lus ntawm formaldehyde hauv cov khoom raug kuaj pom tom qab 0.5h.Thaum cov residual formaldehyde tsawg dua 0.3%, lub voj voog raug nres thiab cov tshuaj tiv thaiv tau muab tso rau hauv lub tank nruab nrab nrog cov ntsiab lus ntawm propargyl thiab butanediol txog li 4% thiab 6%, feem.Lub catalyst nyob rau hauv cov txheej txheem ntau lawm yuav tsum tau hloov tsis tu ncua, thiab lub sij hawm hloov yog 30 mus rau 40 hnub.Nitrogen yog siv ua ke nrog lub catalyst kom tshem tawm cov khoom ntawm lub cev thaum hloov.Tom qab sib cais los ntawm lub siab pom, qhov seem catalyst yog muab tso rau hauv lub tank siv catalyst thiab kaw nrog dej.Cov catalyst tshiab tau sau rov qab rau hauv lub voj voog tom ntej ntawm cov txheej txheem batching.
Propargyl cawv kev lag luam tsom xam
Dezhou Tianyu Chemical Co., Ltd. yog ib qho ntawm ob peb lub tsev tsim khoom ntawm propargyl cawv thiab butanediol cov tuam txhab loj, cov khoom lag luam txhua xyoo ntawm propargyl cawv 1200T, butanediol 2400T, thiab qhov zoo ntawm lub teb chaws Yelemees BASF sib npaug.Henan Haiyuan Fine Chemical Co., Ltd. upgraded thiab optimized qhov project nyob rau hauv lub hauv paus ntawm thawj cov txheej txheem ntawm Shandong Dongfang Le, nrog rau ib xyoos ib zaug tso zis ntawm 1200T propionyl cawv thiab 2400T butanediol.Nyob rau hauv Suav teb, proparynyl cawv yog tsuas yog siv nyob rau hauv lub synthesis ntawm tshuaj, sodium phosphate, calcium phosphate, sulfonamide thiab tshuaj tua kab, accounting rau txog 60% ntawm tag nrho cov.Kev nrawm nickel plating thiab flash plating suav txog 17%.Cov roj ntau lawm yog li 10%;Steel feem yog kwv yees li 8 feem pua;Lwm qhov kev lag luam suav txog li 5%.Propargyl cawv yog ib yam tshuaj lom neeg uas muaj kev cuam tshuam rau kev tsim khoom, kev lag luam thiab kev siv.Nws yog downstream tshuaj, tshuaj tua kab, metallurgical media thiab lwm yam kev pab cuam los yog ib qho ntawm cov khoom.Raws li qhov kawg ntawm 2017, lub peev xwm tsim tau zoo hauv tsev yog 4,770T / a, thiab qhov kev thov yog li ntawm 4,948T / a.Kev xa khoom thiab kev xav tau yog qhov sib npaug, nrog rau qee lub sijhawm tsis txaus.
xaus
Tam sim no, kev sib tw hauv kev lag luam propanol yog qhov hnyav, nws daim ntawv thov loj tshaj plaws yog kev lag luam tshuaj fosfomycin series cov khoom lag luam, los ntawm kev saib xyuas kev siv tshuaj tua kab mob hauv lub tebchaws thiab electroplating kev lag luam kev tiv thaiv ib puag ncig, propanol downstream cov neeg siv nyob rau hauv lub sij hawm luv luv yeej tsis nce.Tam sim no, peb tab tom sim ua kom zoo dua cov txheej txheem tshuaj tiv thaiv tshiab, niaj hnub txhim kho cov txiaj ntsig ntawm propargyl cawv, thiab siv zog los txo qis zog ntawm cov khoom siv cawv propargyl.Kev siv cov kev ua haujlwm no yuav txo tau tus nqi ntawm cov khoom siv cawv propargyl, txhim kho kev sib tw ntawm cov khoom, thiab siv zog ua kom tau raws li kev lag luam hauv tsev thiab txawv teb chaws xav tau rau cov khoom siv cawv propargyl thiab cov khoom lag luam, tsim kom muaj txiaj ntsig kev lag luam thiab kev sib raug zoo.
