LrgpV1, Main, Exploration, bibRecord, 000380

A purification route of bio-acrylic acid by melt crystallization respectful of environmental constraints

Identifieur interne : 000380 ( Main/Exploration ); précédent : 000379; suivant : 000381

A purification route of bio-acrylic acid by melt crystallization respectful of environmental constraints

Auteurs : Marie Le Page Mostefa [France] ; Hervé Muhr [France] ; Edouard Plasari [France] ; Michel Fauconet [France]

Source :

Powder Technology [ 0032-5910 ] ; 2014-03.

RBID : Hal:hal-01275926

Abstract

Bio-acrylic acid (AA) is produced from glycerol, a by-product of biodiesel production and oleochemistty. However, conventional purification techniques cannot purify this biobased AA owing to its impurity profile and the significant content of propionic add (PA). The liquid-solid phase diagram of the binary AA + PA shows that acrylic add crystallizes as a pure form from melts containing between 50 and 100% (mol/mol) of AA. Thus, a new falling film melt crystallization device has been developed and tested in which: - supercooling is limited by the use of a crystallization surface made of 316L stainless steel, - melt is thermostated, - visual observation of the crystal layer is possible, and - morphology of the crystal layer limits the retention of impure liquid. Purification tests in this falling film device show that AA is separated from the PA in reduced crystallization cycle times and high crystallization yields.

Url:

https://hal.univ-lorraine.fr/hal-01275926

DOI: 10.1016/j.powtec.2013.09.014

Affiliations:

Links toward previous steps (curation, corpus...)

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<front><div type="abstract" xml:lang="en">Bio-acrylic acid (AA) is produced from glycerol, a by-product of biodiesel production and oleochemistty. However, conventional purification techniques cannot purify this biobased AA owing to its impurity profile and the significant content of propionic add (PA). The liquid-solid phase diagram of the binary AA + PA shows that acrylic add crystallizes as a pure form from melts containing between 50 and 100% (mol/mol) of AA. Thus, a new falling film melt crystallization device has been developed and tested in which: - supercooling is limited by the use of a crystallization surface made of 316L stainless steel, - melt is thermostated, - visual observation of the crystal layer is possible, and - morphology of the crystal layer limits the retention of impure liquid. Purification tests in this falling film device show that AA is separated from the PA in reduced crystallization cycle times and high crystallization yields.</div>
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A purification route of bio-acrylic acid by melt crystallization respectful of environmental constraints

A purification route of bio-acrylic acid by melt crystallization respectful of environmental constraints

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Abstract

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