Smelt spout robot for recovery boiler - ANDRITZ

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PROBLEM IGS DOUBLES THE LIFE OF SMELT SPOUTS FOR ?/h3>

smelt smelt spout cleaning unit recovery boiler Prior art date Liming Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active, expires Liming Application number US13/008,222 Other versions

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AMERICAN FOREST & PAPER ASSOCIATION AMERICAN ?/h3>

recovery boiler in paper industry. Posted On : Liming Published By : Jenny Wu. Quick inquiry: I need the quotation of, the fuel is, the capacity is . My Name is, My Email is, ?/p>

Smelt Spouts - Babcock

Smelt Spouts. The design, installation and maintenance of smelt spouts, used to discharge liquid smelt from the furnace to the dissolving tank, are important to the safe, reliable operation of Kraft recovery boilers. 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.

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United States Patent Patent No.: US 6,319,358 Bl Winnick

Chemical Recovery Process Steps ?Black liquor evaporation: concentrates the black liquor to increase solids content ?Black liquor combustion (recovery boiler): burns the organic portion of black liquor to generate steam and produce molten smelt from the spent inorganic cooking chemicals ?Recausticizing: regenerates white liquor from the smelt for reuse in pulp cooking ?Calcining

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Development of recovery boiler technology Abstract

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 a portion of the coolant liquid to specific areas of the spout which in the past have failed.

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Smelt Spout of Recovery Boiler 2) - YouTube

Sep 04, 2013 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators

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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.

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A laboratory study of recovery boiler smelt shattering

Understanding recovery boiler smelt runoff - TSpace. Recovery boilers with more spouts are more tolerant of individual spout plugging and can continue to operate at higher black liquor firing rates than those with. View More; Smelt spout robot for recovery boiler - ANDRITZ Group. The ANDRITZ Smelt Spout Robot is a safe option for the recovery

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Smelt Spout | Valmet

Our smelt spout can be utilized on any recovery boiler, and it is suitable for your local boiler condition. The smelt spout is based on proven technology, and our smelt spout area is a complete solution with tube openings, wall box, spout, hoods, shattering equipment and washing of doghouse. We are continuously improving the lifetime of the smelt spout and working on minimizing the risk of dangerous situations with smelt spouts. The benefits of our smelt spout ?/p>

Smelt Spout System - Valmet

Smelt Spout ?Insertable, water cooled and self leveling design ?Includes built-in, pre-poured refrac-tory seal box for superior interface ?Steep, robust, U-shaped trough ensures positive flow of smelt and reduces build-ups ?Delivers fast, steady and consistent smelt stream for ideal shattering capabilities

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BLRBAC COMMON PRACTICES

Large ash/slag falls drop on floor splashing through spouts and PA ports Hot flue gas, hot ash and molten smelt can blow out of openings. Restrict access to boiler house around primary air and smelt spout port openings. Plugged spouts while burning out bed, start- up Auxiliary fuel in too quick, salt dams, smelting pools in bed cause rushes Leave the spout plugged during the chill and blow and open ?/p>

US Patent for Recovery boiler smelt spout Patent (Patent

In kraft recovery boiler operations, molten smelt (mainly consisting of sodium carbonate and sodium sulfide, and small amounts of sodium sulfate, sodium chloride, and potassium salts) flows out of the boiler at 800°C-850°C down a number of spouts, at a flow rate on the order of 1 L/s per spout, before falling into the dissolving tank below

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Fornax Services

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.

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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 ensu

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RECOMMENDED GOOD PRACTICE - BLRBAC

Smelt spouts had to be replaced every 12 months. SOLUTION IGS applied a thermal spray cladding onto the smelt spouts, extending their life to 18-24 months. APPLICATION IGS perform applications in specialised workshops, ensuring top quality and meeting delivery timescales. Application and Delivery Recovery boiler smelt spouts are critical to its

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recovery boiler in paper industry ?Industrial Boiler Supplier

Recovery boiler also improved the smelt removal. It is removed directly from the furnace through smelt spouts into a dissolving tank. Even the first recovery units employed the use of Cottrell precipitator for dust recovery. 6 Figure 8, First Tomlinson Kraft recovery boiler from Babcock & Wilcox

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4-1 Recovery Boiler Equipment and Operation

flue gas from the boiler Operate on a balanced draft FD Fan ID Fan Recover Inorganic Chemicals Recover the inorganic chemicals as a molten smelt of Na 2S and Na 2CO 3 Na 2S requires a local reducing (oxygen deficient) environment Some S leaves as Na 2SO 4 ?incomplete reduction measured by reduction efficiency Runs out of the furnace through spouts

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US9228745B2 - Cleaner equipment for the smelt spouts of a

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.

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Process Recovery (PR) Boilers

In January 1962, the Black Liquor Recovery Boiler Advisory Committee was formed by representatives of the pulp and paper industry, manufacturers of black liquor recovery boilers and insurance companies providing coverage on black liquor recovery boilers. The purpose of the committee was stated as follows

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