中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

6 records (took 0.016 seconds)

    PROCESS AND EQUIPMENT FOR CAREFUL GRINDING AND SIMULTANEOUS DRYING OF MOIST CELLULOSE ETHER PRODUCTS
    2.
    发明专利
    PROCESS AND EQUIPMENT FOR CAREFUL GRINDING AND SIMULTANEOUS DRYING OF MOIST CELLULOSE ETHER PRODUCTS 未知

    公开(公告)号：CA2003771A1

    公开(公告)日：1990-05-25

    申请号：CA2003771

    申请日：1989-11-24

    Applicant: HOECHST AG

    Inventor： DONGES REINHARD ,  SPONHEIMER MANFRED ,  WELT GUNTHER ,  ZIEGELMAYER MANFRED

    IPC: C08B11/04 ,  B02C13/13 ,  B02C13/282 ,  B02C17/00 ,  B02C23/10 ,  B02C23/24 ,  C08B11/20 ,  C08J3/12 ,  B02C13/20 ,  B02C21/00 ,  C08B11/00

    Abstract: HOE 88/F 389 of the disclosure: Process and equipment for careful grinding and simultaneous drying of moist cellulose ether products The present invention relates to a process for careful grinding and simultaneous drying of moist cellulose ether products, wherein a) a moist cellulose ether is introduced by means of a transport gas into a circular space, b) the moist cellulose ether is impact-communited while being circulated, c) the product is simultaneously friction-comminuted in the direction opposite to that of the impact comminution, d) the peripheral speed of the comminution stages, which operate in opposite directions, being regulated to such a value that the resulting grinding energy dries the product to a predetermined residual moisture content, e) the ground material is conveyed onwards by the gas stream introduced into the comminution spaces, f) the ground material is separated from the gas stream and, if desired, g) the ground material is subjected to selective screening. The invention also relates to equipment for carrying out the process. (Figure 5)

    PROCESS FOR SCREENING CELLULOSE ETHERS
    4.
    发明专利
    PROCESS FOR SCREENING CELLULOSE ETHERS 未知

    公开(公告)号：CA2146716A1

    公开(公告)日：1995-10-12

    申请号：CA2146716

    申请日：1995-04-10

    Applicant: HOECHST AG

    Inventor： SPONHEIMER MANFRED ,  WELT GUENTHER ,  ZIEGELMAYER MANFRED

    IPC: B07B1/00 ,  B07B1/55 ,  C08B11/20 ,  C08B17/06 ,  C08B31/12

    Abstract: A process and apparatus for screening cellulose ethers which have a finely fibrous or wad-like or woolly structure, wherein the process comprises the following steps: a) applying the cellulose ether (material to be screened) to a sieve surface, b) dividing the material to be screened into an screenable portion (acceptable size material or material passing through the sieve) and a circulating portion (oversize material or sieve surface tailings) with the aid of an agitated (preferably vibrating and/or tumbling) sieve surface, c) flushing through the agitated sieve surface from below, generally perpendicularly to the sieve surface, with an air flow, d) discharging (recovering) the acceptable size material, and e) discharging the circulating portion from the sieving system. The air flow inhibits clogging or plugging of or matting upon the sieve surface and is preferably directed upward by slit nozzles arranged below the sieve surface.

Patent Agency Ranking