INTEGRATED PRODUCTION OF UREA FOR DIESEL EXHAUST FLUID AND UREA AMMONIUM NITRATE

    公开(公告)号:US20250115547A1

    公开(公告)日:2025-04-10

    申请号:US18986271

    申请日:2024-12-18

    Abstract: Disclosed is a method for the integrated production of two different urea products. One is an aqueous urea solution suitable for use in NOx abatement (generally indicated as Diesel Exhaust Fluid DEF). The other is a solution used as a fertilizer, viz. Urea Ammonium Nitrate (UAN). The production of DEF and UAN are integrated as follows: ammonia recovered from the production of urea is used as a feed to the production of ammonium nitrate. At least part of an aqueous urea stream from urea production, is mixed with ammonium nitrate so as to obtain UAN.

    THERMAL STRIPPING UREA PLANT AND PROCESS

    公开(公告)号:US20220274916A1

    公开(公告)日:2022-09-01

    申请号:US17636257

    申请日:2021-06-23

    Abstract: The disclosure pertains to an urea production plant and process using a thermal stripper, wherein the reaction mixture is separated in two parts, wherein the first part is supplied at least in part to the thermal stripper and the second part at least in part bypasses the thermal stripper and is supplied to a medium pressure recovery section.

    HEAT EXCHANGER
    10.
    发明申请

    公开(公告)号:US20220249975A1

    公开(公告)日:2022-08-11

    申请号:US17724085

    申请日:2022-04-19

    Inventor: Dorin POPA

    Abstract: Described are a high pressure carbamate condenser, urea plant, and urea production process. The high pressure carbamate condenser as described is of the shell-and-tube heat exchanger type with a tube bundle and has a redistribution chamber connected to tubes of the tube bundle and to a duct. The duct extends between the redistribution chamber and the shell.

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