Recovery Boiler Smelt Spouts

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CLEANER EQUIPMENT FOR THE SMELT SPOUTS OF A RECOVERY BOILER …

Below the furnace is located the cover area of a dissolving tank of the recovery boiler, i.e. the smelt spout area, where the smelt from the lower part of the furnace is directed along the so-called smelt spout to the dissolving tank. FIG. 1 shows a typical smelt12 3.

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Valmet Smelt Spout Robot - Reliable cleaning of recovery boiler …

The purpose of the Smelt Spout is to transport char bed deposits from the furnace to the dissolving tank. By using our smelt spout, you will get an efficient, stable and controlled smelt flow, reducing noise and hazardous smelt risks. Our smelt spout can be utilized on any recovery boiler, and it is suitable for your local boiler …

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US20080087302A1 - Cleaner for the smelt spout of a recovery boiler …

FIG. 1 shows a typical smelt spout area of a recovery boiler, which comprises smelt spouts 1, along which the smelt is directed from the furnace 2 to the dissolving tank 3. Typically, the smelt is very hot (for example 750 to 820 C.). The possible splashes of

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Danger!! Smelt spout recovery boiler - YouTube

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 flow1 L

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(PDF) Understanding recovery boiler smelt runoff phenomena

Smelt fluidity, the ability of smelt to flow out of recovery boiler spouts, is inversely related to smelt viscosity. Molten smelt has a viscosity value between 2.5 and 5 mPa*s, which is not

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Smelt Spout | Valmet

Smelt Spout Robot Less personnel at the smelt spouts Standing or hanging, depending on spout deck layout 12 8/23/2016 Working Towards a Safer Recovery Boiler Operation …

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A laboratory study of recovery boiler smelt shattering

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

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US7891325B2 - Cleaner for the smelt spout of a recovery boiler - …

A cleaning apparatus for a smelt spout of a recovery boiler, which apparatus comprises a motorized cleaning member ( 7 ) for cleaning the smelt spout ( 1 ). The cleaning apparatus further comprises a path ( 5 ) and a cleaning unit, which comprises motorized

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TAPPI PEERS Working Towards a Safer Recovery Boiler Operation

4/9/2013 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features

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US9228745B2 - Cleaner equipment for the smelt spouts of a recovery boiler …

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

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US9228745B2 - Cleaner equipment for the smelt spouts of a …

27/2/2015 · 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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4-1 Recovery Boiler Equipment and Operation

4.1-2 toward the hearth. At normal furnace temperatures they are in a molten (liquid) state and can be drained from the boiler through smelt spouts. One feature of recovery boilers is the presence of a char bed on the hearth. char bed. The char bed consists of a pile

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US20100122424A1 - Smelt spout opening cleaner, cleaning head …

A spout opening cleaner for cleaning smelt spouts of recovery boilers and the like includes an actuation arm and self-aligning cleaning head. The cleaning head employs open bail designs for enabling continued flow of smelt during a cleaning cycle.

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Recovery boiler smelt spout - International Paper Company

Our recovery boiler. Smelt comes out of and into dissolving tank

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US Patent for Recovery boiler smelt spout Patent (Patent # …

This spout is mounted in such a way that the molten smelt exiting the recovery boiler flows through the spout trough. This has been used prior to this invention but has exhibited the drawback of breaking down approximately every two weeks, such breakdown believed to be due to thermal metal fatigue caused by concentration of heat at one or more portions of the spout.

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Working Towards a Safer Recovery Boiler Operation - Valmet

To improve safety and make smelt spouts more accessible for cleaning, several recovery boiler suppliers developed smaller individual hoods for the smelt spouts, referred to as mini or micro-hoods. Compared to the larger hood designs, this arrangement allows for

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Smelt Spout of Recovery Boiler 2) - YouTube

6/7/2017 · Some smelt spout back fire due to too much build of bed inside of boiler. It caused bad combustion and uncontrol of parameters.

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TAPPI PEERS Working Towards a Safer Recovery Boiler Operation

Smelt Spout Robot Less personnel at the smelt spouts Standing or hanging, depending on spout deck layout 12 8/23/2016 Working Towards a Safer Recovery Boiler Operation …

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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

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Working Towards a Safer Recovery Boiler Operation - Valmet

To improve safety and make smelt spouts more accessible for cleaning, several recovery boiler suppliers developed smaller individual hoods for the smelt spouts, referred to as mini or micro-hoods. Compared to the larger hood designs, this arrangement allows for

Learn More