processo para preparação de acroleína de ácido acrílico, de um polímero, aparelhagem para preparação de acroleína; de ácido acrílico, de polímeros, artigo de higiene, uso de acroleína e de ácido acrílico, fibra, filma, composição moldada, auxiliar têxtil e para couro, floculante, revestimento, tinta ou verniz, espuma, cabo, material selante, suporte para plantas, para agentes reguladores do crescimento de fungos ou agentes protetores de culturas, aditivos para materiais de construção, materiais de embalagens ou aditivos para solo, processo para purificação de uma fase de glicerol.

摘要

The invention relates to a method for producing acrolein by dehydrating an aqueous glycerin phase in an acrolein reaction region, obtaining an aqueous acrolein reaction phase; at least partially separating the aqueous acrolein reaction phase into an acrolein-rich acrolein phase and an acrolein-poor residual phase comprising glycerin, water and various other residuals; and recirculating at least part of the residual phase into the acrolein reaction region. Additionally, removing at least one of the residuals, other than glycerin or water, from either of the glycerin phase or a mixture phase obtained by mixing the glycerol phase with the low-acrolein residue phase and feeding the resulting purified glycerin or mixture phase into the acrolein reaction region. The invention furthermore relates to a method for producing acrylic acid, water-absorbing polymer formations, compounds and hygiene articles, and to devices for carrying out those methods.