ERICH JOSEF WINDHAB,NADINA PATRIZIA MUELLER-FISCHER,KARL UWE TAPFER
申请号：
BRPI0714829
公开号：
BRPI0714829A2
申请日:
2007.07.12
申请国别(地区):
BR
年份:
2013
代理人:
摘要：
CYLINDRICAL MEMBRANE FOR FOAM FORMING. The present invention relates to an apparatus and process for making a foam having a controlled size distribution of gas bubbles in a liquid matrix. The invention utilizes a porous material having controlled pore size and pore distance to produce a substantially uniform size distribution of gas bubbles； a gas pumping device for directing a gas flow to and through the porous material to form the gas bubbles； a fluid pumping device for directing a liquid matrix flow over the porous material and a rotating element moving in the vicinity of the membrane surface causing additional flow to separate, collect, accumulate and insert the gas bubbles into the matrix of liquid to form a foam having generally uniform size gas bubbles and a substantially uniform gas bubble size distribution. Advantageously, the pore size and pore distance of the porous material, the gas flow of the gas pumping device, the flow field generated by the rotary element and the fluid flow of the fluid pumping device cooperate to provide gas bubbles. having an average diameter X ~ 50.0 ~ which is less than 2-2.5 times, preferably less than 1.25-1.5 times the average pore diameter of the membrane and to provide the foam with a ratio gas bubble diameter distribution range X ~ 90.0 ~ / X ~ 10.0 ~ which is less than 5, preferably less than 3.APARELHO DE MEMBRANA CILÍNDRICO PARA FORMAÇçO DE ESPUMA. A presente invenção refere-se a um aparelho e processo para fabricação de uma espuma tendo uma distribuição de tamanho controlada de bolhas de gás em uma matriz de líquido. A invenção utiliza um material poroso tendo tamanho de poro e distância de poro controlados para produzir uma distribuição de tamanho substancialmente uniforme de bolhas de gás； um dispositivo de bombeamento de gás para direcionamento de um fluxo de gás para e através do material poroso para formar as bolhas de gás； um dispositivo de bombeamento de fluido para direcionamento de um fluxo de matriz de líquid
