BDO, inozivikanwawo se1,4-butanediol, yakakosha yakakosha organic uye yakanaka makemikari mbishi zvinhu. BDO inogona kugadzirirwa kuburikidza neacetylene aldehyde nzira, maleic anhydride nzira, propylene doro nzira, uye butadiene nzira. Iyo acetylene aldehyde nzira ndiyo huru yemaindasitiri nzira yekugadzirira BDO nekuda kwemutengo wayo uye maitiro ezvakanaka. Acetylene uye formaldehyde zvinotanga kunyungudutswa kugadzira 1,4-butynediol (BYD), iyo inowedzera hydrogenated kuwana BDO.
Pasi pekumanikidzwa kwepamusoro (13.8 ~ 27.6 MPa) uye mamiriro e250 ~ 350 ℃, acetylene inopindirana ne formaldehyde pamberi pechinhu chinokonzera (kazhinji cuprous acetylene uye bismuth pane silica support), uye ipapo yepakati 1,4-butynediol is hydrogenated. kuBDO uchishandisa Raney nickel catalyst. Chimiro che classical method ndechekuti iyo catalyst uye chigadzirwa hachidi kuparadzaniswa, uye mari yekushandisa yakaderera. Zvisinei, acetylene ine high partical pressure uye nengozi yekuputika. Iyo yekuchengetedza chinhu cheiyo reactor dhizaini yakakwira se12-20 nguva, uye midziyo yakakura uye inodhura, zvichikonzera mari yakawanda; Acetylene inozoita polymerize kuburitsa polyacetylene, iyo inodzima catalyst uye inovhara pombi, zvichikonzera kupfupikiswa kutenderera kwekugadzira uye kuderedzwa kuburitsa.
Mukupindura kukanganisa uye kukanganisa kwemaitiro echinyakare, maitiro ekuita uye catalysts eiyo reaction system yakagadziridzwa kudzikisa chikamu chekumanikidzwa kweacetylene mune reaction system. Iyi nzira yakashandiswa zvakanyanya munyika uye pasi rose. Panguva imwecheteyo, kuumbwa kweBYD kunoitwa uchishandisa mubhedha wedhaka kana mubhedha wakamiswa. Iyo acetylene aldehyde nzira yeBYD hydrogenation inogadzira BDO, uye parizvino ISP neINVISTA maitiro ndiwo anonyanya kushandiswa muChina.
① Synthesis yebutynediol kubva kuacetylene uye formaldehyde uchishandisa copper carbonate catalyst.
Inoshandiswa kuchikamu cheacetylene chemakemikari yeBDO maitiro muINVIDIA, formaldehyde inopindirana neacetylene kuti ibudise 1,4-butynediol pasi pechiito chemhangura carbonate catalyst. The reaction tembiricha iri 83-94 ℃, uye kumanikidza kuri 25-40 kPa. Iyo catalyst ine hupfu hwakasvibira hunoonekwa.
② Catalyst yehydrogenation yebutynediol kuBDO
Chikamu cheHydrogenation chemaitiro chinosanganisira maviri epamusoro-akatsikirirwa mabhedha emagetsi akabatanidzwa munhevedzano, ane 99% yehydrogenation reactions inopedzwa mune yekutanga reactor. Yekutanga neyechipiri hydrogenation catalysts inogadziriswa nickel aluminium alloys.
Fixed bed Renee nickel is a nickel aluminium alloy block ine particle sizes kubva pa2-10mm, simba repamusoro, kupfeka kwakanaka kuramba, hombe chaiyo yenzvimbo, zvirinani catalyst kugadzikana, uye hupenyu hurefu hwebasa.
Unactivated fixed bed Raney nickel particles ane grey white, uye mushure meimwe denderedzwa remvura alkali leaching, inova yakasviba kana dema grey particles, anonyanya kushandiswa mu fixed bed reactors.
① Mhangura inotsigirwa inokonzeresa yekugadzira butynediol kubva acetylene uye formaldehyde
Pasi pechiito chemhangura yebismuth catalyst inotsigirwa, formaldehyde inobata neacetylene kugadzira 1,4-butynediol, pakuita tembiricha ye92-100 ℃ uye kumanikidza kwe85-106 kPa. Iyo catalyst inoratidzika sehupfu dema.
② Catalyst yehydrogenation yebutynediol kuBDO
Iyo ISP maitiro inotora matanho maviri ehydrogenation. Danho rekutanga riri kushandisa hupfu nickel aruminiyamu alloy secatalyst, uye low-pressure hydrogenation inoshandura BYD kuita BED neBDO. Mushure mekuparadzana, nhanho yechipiri ndeyepamusoro-kumanikidza hydrogenation uchishandisa yakatakura nickel secatalyst yekushandura BED kuita BDO.
Primary hydrogenation catalyst: powdered Raney nickel catalyst
Primary hydrogenation catalyst: Powder Raney nickel catalyst. Izvi zvinokonzeresa zvinonyanya kushandiswa mune yakaderera-kumanikidza hydrogenation chikamu cheiyo ISP process, yekugadzirira kweBDO zvigadzirwa. Iyo ine hunhu hwekuita kwepamusoro, sarudzo yakanaka, chiyero chekushandura, uye nekukurumidza kugadzirisa. Izvo zvakakosha zvinoumba nickel, aluminium, uye molybdenum.
Primary hydrogenation catalyst: poda nickel aluminium alloy hydrogenation catalyst
Iyo catalyst inoda basa rakakwirira, simba guru, kutendeuka kwakakwirira kwe1,4-butynediol, uye zvishoma ne-zvigadzirwa.
Secondary hydrogenation catalyst
Iyo inotsigirwa inosimudzira ine alumina semutakuri uye nickel uye mhangura sezvinhu zvinoshanda. Iyo yakaderedzwa mamiriro inochengetwa mumvura. Iyo catalyst ine yakakwira mechanic simba, yakaderera friction kurasikirwa, yakanaka kugadzikana kwemakemikari, uye iri nyore kuita. Black clover shaped particles muchitarisiko.
Mamiriro ekushandisa eCatalysts
Inoshandiswa kuBYD kugadzira BDO kuburikidza necatalyst hydrogenation, inoshandiswa kune 100000 ton BDO unit. Maseti maviri emabhedha emagetsi akaiswa ari kushanda panguva imwe chete, imwe iJHG-20308, uye imwe inotengeswa kunze kwenyika.
Kuongorora: Panguva yekuongororwa kwehupfu hwakatsetseka, zvakaonekwa kuti JHG-20308 fixed bed catalyst yakabudisa poda shoma shoma pane inotengeswa kunze kwenyika.
Activation: Catalyst Activation Mhedziso: Mamiriro ekuita eaviri anokonzeresa akafanana. Kubva pane iyo data, iyo dealumination rate, inlet uye yekubuda tembiricha musiyano, uye activation reaction yekupisa kuburitswa kwealloy pane yega nhanho ye activation inowirirana.
Tembiricha: Iyo tembiricha yekuita yeJHG-20308 catalyst haina kunyanya kusiyana neiyo inotengeswa kunze kwenyika, asi zvinoenderana nenzvimbo dzekuyera tembiricha, JHG-20308 catalyst ine chiitiko chirinani pane inotengeswa kunze kwenyika.
Kusachena: Kubva pakuona data yeBDO crude solution mukutanga kwekuita, JHG-20308 ine tsvina shoma shoma muchigadzirwa chakapedzwa kana ichienzaniswa nezvinotengeswa kunze kwenyika, zvinonyanya kuratidzwa mune zvinyorwa zve n-butanol neHBA.
Pakazere, kuita kweJHG-20308 catalyst kwakagadzikana, pasina zviri pachena zvemhando yepamusoro, uye kuita kwayo kwakangofanana kana kutova nani pane izvo zvinotengeswa kunze kwenyika.
Kugadzira maitiro eiyo fixed bed nickel aluminium catalyst
(1) Kunyunguduka: Nickel aluminium alloy inonyungudutswa pakupisa kwepamusoro uye yobva yakandwa muchimiro.
(2) Kupwanya: Zvidhinha zvealloy zvinopwanyika kuita zvidimbu zvidiki kuburikidza nekupwanya michina.
(3) Kuongorora: Kuongorora kunze zvimedu zvine saizi yakaringana.
(4) Activation: Dzora kumwe kusungirirwa uye kuyerera kweyero yealkali yemvura kumisa zvimedu zviri mushongwe yekupindura.
(5) Zviratidziro zvekuongorora: simbi yemukati, chidimbu saizi kugovera, kumanikidza kupwanya simba, kuwanda kwehuwandu, nezvimwe.
Nguva yekutumira: Sep-11-2023
