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  • Recovery boiler smelt spouts - YouTube

    Our recovery boiler. Smelt comes out of and into dissolving tankLearn More

  • US5715763A - Combustion system for a black liquor recovery

    A black liquor recovery boiler furnace having quaternary air injection ports located in the furnace walls in the vicinity of, or at approximately the same elevation as, the black liquor injection guns. The quaternary air injection ports are located between the secondary air injection ports and the tertiary air injection ports. Air introduced at this level provides a much more efficient mixing Learn More

  • US9228745B2 - Cleaner equipment for the smelt spouts of a

    Since supplying the first Kraft recovery boiler in 1929, B&W has led the development of many improvements in safer, longer-lasting operation of smelt spout systems. Our latest innovation is a new, boiler wall-mounted hood enclosure design.Learn More

  • Recovery boiler smelt spout - Champion International

    A smelt spout opener for opening a smelt spout of a furnace used in a chemical recovery process in which concentrated black liquor is burned in the furnace to produce a gas and a hot molten smelt in the bottom of said furnace and the hot molten smelt is discharged from said furnace via a smelt spout where said smelt has solidified in or about Learn More

  • PAPER TECHNOLOGIES - Buckman

    Recovery boiler treatment • Recover Boiler Adviser (RBA), leak detection • Fireside pluggage monitoring • High-pressure internal treatment • Smelt spout cooling and monitoring • Comprehensive inspections, internal and fireside Steam treatment • Blended neutralizing amine • …Learn More

  • 4-1 Recovery Boiler Equipment and Operation

    shield molten smelt from exposure to combustion air. Figure 9 shows a representation of a char bed in a recovery boiler. It also provides a representation of smelt flowing out of the boiler through spouts. Figure 10 shows two different pictures of actual char beds taken with bed cameras. Not all of the inorganic chemicals proceed directly to Learn More

  • Smelt spout robot for recovery boiler - ANDRITZ

    The smelt spout area of a recovery boiler is one of the least desirable and sometimes also a dangerous place to work. However, essential regular tasks need to be carried out for efficient and smooth operation of the boiler. Smelt can cause several issues in the spout area as it tends to coagulate and plug the spouts and needs regular cleaning.Learn More

  • Smelt spout robot for recovery boiler - andritz.com

    The smelt spout area of a recovery boiler is one of the least desirable and sometimes also a dangerous place to work. However, essential regular tasks need to be carried out for efficient and smooth operation of the boiler. Smelt can cause several issues in the spout area as it tends to coagulate and plug the spouts and needs regular cleaning.Learn More

  • (PDF) Alternative materials for floor and lower waterwall

    Alloy 625 have been used for: (1) re placement of smelt runs in rec overy boiler floors (Figure 22), (2) smelt spout openings (Fi gure 23), and (3) prim ary air port openi ngs (Figure 24). The t Learn More

  • 3221 5687, (P) 3221 568X Heat Recovry From Recovery Boiler

    Heat Recovry From Recovery Boiler Of Smelt Dissolving Tank Vent Abstract--A water cooled spout for the furnace of a recovery boiler, as used in a papermaking process. The usual internal cavity of a process people heat the material with an agent to trigger a …Learn More

  • Valmet Smelt Spout Robot - Reliable cleaning of recovery

    Feb 27, 2015 · Valmet Smelt Spout Cleaning Robotefficiently removes smelt deposits from recovery boiler smelt spouts in a carefully designed sequence. The spout rodder ensuLearn More

  • Recovery Boiler Treatments | Solenis

    The recovery boiler presents many challenges that can significantly impact the bottom line of pulp and paper mills. Maintaining the reliability of your recovery boiler is paramount and requires innovative solutions that, if properly employed, will protect your assets, improve your operational efficiency and ensure the safety of your workers.Learn More

  • Fornax Services

    Jan 29, 2020 · Smelt spouts have a limited lifetime and that is due to thermal stresses but also erosion effect of the smelt flow during an operation. Molten smelt exits the recovery boiler at a temperature as high as 850 °C (1500 °F). So not surprisingly, the smelt spouts are under a lot of thermal stress.Learn More

  • Recovery boiler smelt spout - International Paper Company

    Recovery boiler smelt spout. United States Patent 4750649. A spout for a recovery boiler such as those used in the papermaking industry. As in prior art spouts of this type, the spout is provided with an internal cavity to thereby permit water cooling of the spout. By this invention, a duct is provided for the internal cavity, the duct applying Learn More

  • Smelt Spout Failures - And Prevention

    Jan 30, 2020 · Smelt spouts are an integral part of a recovery boiler operation, aiding in the removal of the molten smelt from the lower furnace and safely directing it to the dissolving tank where it dissolves Learn More

  • Recovery Boiler Corrosion Chemistry

    Recovery Boiler Corrosion Chemistry Sandy Sharp and Honghi Tran Symposium on Corrosion in Pulp and Paper Mills and Biorefineries, RBI at Georgia Tech., November 14, 2014 SharpConsultant University of Toronto Pulp and Paper Centre Introduction Smelt Spouts are vulnerable toLearn More

  • US7975658B2 - Air port and smelt spout cleaner and drop

    Apparatus for cleaning a smelt spout of a combustion device FI122899B (en) * Liming: Liming: Metso Power Oy: Mud purifier for soda boiler US7625518B2 (en) * Liming: Liming: Clyde Bergemann, Inc. Smelt spout opening cleaner, cleaning head and apparatus US10371646B2 (en) * Liming: LimingLearn More

  • (PDF) Fireside corrosion in kraft recovery boilers

    Causes and corrective measures are reviewed for several common types of fireside corrosion in kraft recovery boilers. Corrosion differs significantly with location in the boiler due tio the great Learn More

  • Formation mechanisms of "jellyroll" smelt in kraft

    In recovery boiler operation, maintaining a steady flow of molten smelt from smelt spouts is critically important for ensuring a safe operation of the dissolving tank and a steady flow of green liquor. Smelt spout openings need to be periodically cleaned, as they are often clogged by unburned char and frozen smelt if left unattended. SomeLearn More

  • BLRBAC COMMON PRACTICES

    For Black Liquor Recovery Boilers Smelt Spout Deck Safety Considerations Condition Hazard Suggested Precautions Smelt splatter from spouts Chemical and temperature burns caused by splashing out of spout. Install a system/method to remotely adjust the angle of the shatter spray jet. Smelt splatter from spouts Smelt plugging of spouts.Learn More

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