Monsanto Company

Don E Carter

Yung C Hsu

Henry K Yuen

Arnold L McPeters

Jason J Tang

Hobson L Skeen

A spinning pack for wet spinning a tow having at least 20,000 bicomponent acrylic filaments is described. The pack includes a plurality of specially designed plates arranged so as to provide filaments having a substantially uniform distribution of the components along the entire length of each filament and from filament to filament.

Spinning pack for wet spinning bicomponent filaments

An improved countercurrent solid-liquid contacting apparatus, and more particularly an improved counter-current crystallizer column is disclosed. The present invention embraces the discover that column efficiency and product purity can be substantially enhanced by reducing axial liquid back-mixing by using stationary solid beds and transport means at spaced intervals along the column length.

High efficiency column crystallizer

An incrustation resistive crystallizer apparatus is disclosed. The crystallizer housing has conduit means for ingress of solution to be crystallized, separate conduit means for ingress and egress of cooling fluid, means for recovery of mother liquor and product crystals either together or separately. A plurality of essentially horizontal perforated plates substantially conforming to the interior shape of the housing are vertically spaced along the housing length. A support member capable of translational movement along the housing length holds the plates in the above-described position. A plurality of mobile bodies are disposed on the upper surface of the plates. A heat transfer conduit disposed substantially parallel to the coaxial support member penetrates through apertures in the horizontal plates. A compound excitation device adapted to produce two waveforms is attached to the support member. The first waveform causes translational plate movement for scraping the surface of the heat transfer conduit. The second waveform causes the plates to vibrate causing the mobile bodies thereon to agitate and collide with each other and the surface of the heat transfer conduit.

Incrustation resistive crystallizer employing multifrequency vibrations

A thermal energy storage system for absorption of heat from a heat source having a temperature above a predetermined temperature and release of heat to a heat sink having a temperature below the predetermined temperature. The system comprises a heat storage mass comprising a condensed state material which changes between the solid and liquid phases at about the predetermined temperature and a compartment for containing the heat storage mass. The compartment includes means providing an area for transfer of heat between a fluid and the material. The material may be an aliphatic diamine corresponding to the general formula

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Creve Couer, MO, United States of America

Don E Carter