Cov txheej txheem tsim khoom ntawm emulsified bitumen tuaj yeem muab faib ua plaub yam hauv qab no: kev npaj bitumen, xab npum npaj, bitumen emulsification, thiab emulsion cia. Qhov tsim nyog emulsified bitumen qhov hluav taws xob kub yuav tsum nyob ib ncig ntawm 85 ° C.

Raws li kev siv emulsified bitumen, tom qab xaiv cov khoom tsim nyog bitumen thiab daim ntawv lo, cov txheej txheem kev npaj bitumen feem ntau yog cov txheej txheem ntawm cua sov cov bitumen thiab tswj nws ntawm qhov tsim nyog kub.

1. Kev npaj ntawm bitumen
Bitumen yog qhov tseem ceeb tshaj plaws ntawm emulsified bitumen, feem ntau suav txog 50% -65% ntawm tag nrho cov loj ntawm emulsified bitumen.

2.Kev npaj ntawm xab npum tov
Raws li qhov yuav tsum tau emulsified bitumen, xaiv qhov tsim nyog emulsifier hom thiab ntau npaum li cas ntxiv rau hom thiab ntau npaum li cas, thiab npaj cov emulsifier aqueous tov (xov xab npum). Nyob ntawm cov khoom siv emulsified bitumen thiab hom emulsifier, cov txheej txheem kev npaj ntawm cov tshuaj aqueous (xov xab npum) ntawm emulsifier kuj txawv.

3. Emulsification ntawm bitumen
Muab qhov tsim nyog ntawm bitumen thiab xab npum kua rau hauv lub emulsifier ua ke, thiab los ntawm kev siv tshuab xws li pressurization, shearing, sib tsoo, thiab lwm yam., cov bitumen yuav tsim ib yam thiab zoo hais, uas yuav dispersed stably thiab tusyees nyob rau hauv lub xab npum kua. tsim cov hnab ntim dej. Cov roj bitumen emulsion.
Kev tswj qhov kub thiab txias thaum lub sijhawm npaj cov txheej txheem bitumen yog qhov tseem ceeb heev. Yog hais tias qhov kub ntawm bitumen tsawg dhau, nws yuav ua rau cov bitumen muaj viscosity siab, tsis yooj yim rau ntws, thiab yog li teeb meem emulsification. Yog hais tias qhov kub ntawm bitumen siab dhau lawm, nws yuav ua rau kev laus ntawm bitumen ntawm ib sab, thiab tseem ua rau cov emulsified bitumen tib lub sijhawm. Lub qhov hluav taws xob kub yog siab dhau, uas cuam tshuam rau kev ruaj ntseg ntawm emulsifier thiab qhov zoo ntawm emulsified bitumen.
Qhov kub ntawm cov tshuaj xab npum ua ntej nkag mus rau hauv cov khoom siv emulsification feem ntau tswj ntawm 55-75 ° C. Cov tso tsheb hlau luam loj loj yuav tsum tau nruab nrog cov cuab yeej nplawm kom do tsis tu ncua. Qee cov emulsifiers uas muaj zog ntawm chav tsev kub yuav tsum tau rhuab thiab yaj ua ntej npaj xab npum. Yog li ntawd, kev npaj ntawm bitumen yog qhov tseem ceeb heev.

4. Cia ntawm emulsified bitumen
Cov emulsified bitumen tawm ntawm lub emulsifier thiab nkag mus rau hauv lub tank cia tom qab txias. Qee cov emulsifier aqueous daws yuav tsum tau ntxiv cov kua qaub los kho tus nqi pH, thaum lwm tus (xws li quaternary ammonium ntsev) tsis ua.

Ua kom qeeb ntawm kev sib cais ntawm emulsified bitumen. Thaum cov emulsified bitumen txau los yog tov, cov emulsified bitumen yog demulsified, thiab tom qab cov dej nyob rau hauv nws evaporates, dab tsi yog nyob rau hauv txoj kev yog cov bitumen. Rau tag nrho tsis siv neeg nruam emulsified bitumen ntau lawm cov cuab yeej, txhua feem ntawm cov xab npum (dej, kua qaub, emulsifier, thiab lwm yam) yog cia li ua tiav los ntawm qhov kev pab cuam teem los ntawm cov khoom siv nws tus kheej, tsuav yog cov khoom ntawm txhua yam khoom yog guaranteed; rau semi-Nruam los yog tsis tu ncua ntau lawm cov khoom yuav tsum tau phau ntawv npaj ntawm xab npum raws li cov qauv yuav tsum tau.