DIN EN 3035 2012 Heating boilers Part 5 Heating

  • A Practical Approach to the Control of Recovery Boilers - …

    1978/1/1 · A detailed study concerning the effect of the flue gas scrubber on the emissions of the recovery boiler was carried out at Kaukopaa mill. The preliminary results show that the normal operational region of the scrubber is very flat, i.e. the effect of the 502, H2S and dust emissions remains almost constant.Get Price

  • Passive Acoustic Monitoring of Dissolving Tank Activity and …

    The recovery boiler, one of the largest units in a mill, can be as large as a building. Figure 1.3 shows a schematic for one of the largest recovery boilers in the world at Jinhai Pulp & Paper, Hainan, China. Black liquor is red into the recovery boiler using multipleGet Price

  • A laboratory study of recovery boiler smelt shattering

    A laboratory study of recovery boiler smelt shattering ANTON TARANENKO, MARKUS BUSSMANN, and HONGHI TRAN PEER-REVIEWED RECOVERY BOILER ABSTRACT: A scaled-down experimental apparatus was built to examine smelt shattering duringGet Price

  • Development of converging-diverging multi-jet nozzles for molten …

    2021/4/1 · The effective shattering of molten smelt is highly desired in recovery boiler systems. Ideally, shatter jet nozzle designs should: i) generate high shattering energy; ii) create a wide coverage; and iii) minimize steam consumption. This study proposes a novel converging-diverging multi-jet nozzle design to achieve these goals. A laboratory setup was established, …Get Price

  • ANALYSIS OF CRACKING OF CO-EXTRUDED INTRODUCTION RECOVERY BOILER FLOOR TUBES …

    Laboratory studies are being conducted to determine the susceptibility of co- extruded 304USA210 tubes to stress corrosion cracking, thermal fhtigue, and corrosion in molten smelt. Get Price

  • (PDF) Experiments on smelt shattering and dissolution

    A laboratory study of recovery boiler smelt shattering Article Full-text available Aug 2014 TAPPI J Anton Taranenko Markus Bussmann Honghi Tran A scaled-down experimental apparatus was built to Get Price

  • N NO NH N NO N NO N - TAPPI

    sampling. Smelt samples from the recovery boiler smelt spouts were taken in two different ways: either with a steel mug or with a quartz glass tube. When sampling with a mug (about 100 cm3), the sample was wrapped in aluminum foil and kept in a plastic bag.Get Price

  • COOLING CHARACTERISTICS AND THERMAL PROPERTIES OF KRAET RECOVERY BOILER SMELT

    cooling process was systematically investigated in this study. A laboratory-sale experimental apparatus was constructed and used to conduct field experiments in a kraft mil1 with a mnning decanting floor recovery boiler. The molten smelt samplesGet Price

  • (PDF) A laboratory study of recovery boiler smelt shattering

    PDF | A scaled-down experimental apparatus was built to examine smelt shattering rluring typical recovery boiler operations. Water-glycerine solutions | Find, read and cite all Get Price

  • RECOMMENDED GOOD PRACTICE - BLRBAC

    Recovery boiler explosions fall into four categories -- smelt water explosions, auxiliary fuel explosions, explosions from ignition of unburned gases from pyrolyzed black liquor, and dissolving tank explosions.Get Price

  • [PDF] An experimental study of smelt-water interaction in the recovery boiler dissolving tank …

    2015/7/1 · A laboratory apparatus was constructed to simulate the operating conditions of recovery boiler smelt dissolving tanks and used to systematically study the interaction between molten smelt droplets and water. Experiments were performed on synthetic smelt made of 80 wt% Na2CO3 and 20 wt% NaCl at 800°C, 900°C, and 1000°C. The results show that upon …Get Price

  • The Fluidity of Recovery Boiler Smelt, 2004 International Chemical Recovery …

    The fluidity of smelt is an important property that affects smelt flow from recovery boiler spouts. It is strongly related to smelt viscosity. Results of a laboratory study show that molten smelt has a viscosity between 2.5 and 5 cP, and that, as long as smelt is completely molten, its viscosity is not affected appreciably by composition or temperature.Get Price

  • The Institute of Paper Chemistry

    the sulfur species in the inorganic salts flowing out of the recovery boiler as smelt should be obtained in the sulfide form. Figure 1 is a schematic of a typical recovery boiler. Black liquor is sprayed into a recovery boiler ten to twenty feet above the hearth of theGet Price

  • (PDF) A Laboratory Study of Recovery Boiler Smelt Shattering

    Kraft recovery boiler smelt is shattered into droplets by a high pressure steam jet, to improve smelt dissolution, and to minimize the violence of smelt-water interaction in the dissolving tank.Get Price

  • Honghi N. Tran - Chemical Engineering & Applied Chemistry

    Molten smelt shattering with steam jets Smelt dissolution in the recovery boiler dissolving tank Hard scale formation in green liquor systems Effects of non-process elements on chemical recovery operations Sulfur and sodium balances in the recovery process Get Price

  • [PDF] Automatic Detection and Analysis of Boiler Tube Leakage …

    of boiler tube leakage is a very important factor for power plant functioning, as approximately 60% of boiler outage is due to tube leakages. The traditional method has many drawbacks in leakage detection. In this study acoustic signal processing methods have been used to detect leaks in pressurized systems of utility and industrial power plants. A lab setup is designed and …Get Price

  • Figure 1-3 from Shattering Kraft Recovery Boiler Smelt by a …

    Figure 1-3: Typical smelt shattering - "Shattering Kraft Recovery Boiler Smelt by a Steam Jet" During kraft chemical recovery, smelt created in a recovery boiler is shattered into droplets before falling into a dissolving tank.Get Price

  • Interaction between a Molten Smelt Droplet and Water at Different Temperatures

    great effort to study smelt-water interaction in the context of recovery boiler explosion accidents, which happen when water from leaked tubes contacts molten smelt in the boiler; far less attention has been paid to smelt-water interaction in the dissolving tank.Get Price

  • [PDF] Automatic Detection and Analysis of Boiler Tube Leakage …

    of boiler tube leakage is a very important factor for power plant functioning, as approximately 60% of boiler outage is due to tube leakages. The traditional method has many drawbacks in leakage detection. In this study acoustic signal processing methods have been used to detect leaks in pressurized systems of utility and industrial power plants. A lab setup is designed and …Get Price

  • EXPERIMENTS ON SMELT SHATTERING AND DISSOLUTION

    Fig. 1 - (a) Molten smelt stream from a recovery boiler; (b) smelt shattered by a steam jet. Fig. 2 - Laboratory-scale shattering apparatus. Fig. 3 - Effect of air jet velocity and nozzle distance from the liquid stream on the Sauter Mean Diameter (SMD) of theGet Price

  • Effect of chloride and potassium on borate autocausticizing …

    recovery boiler smelt is of great importance to the success of borate autocausticizing technology. Since chloride (Cl) and potassium (K) are the most troublesome non-process elements in the recovery cycle, the effect of Cl and K contents on …Get Price

  • A STUDY OF THE COMPOSITION OF CARRYOVER PARTICLES IN KRAFT RECOVERY BOILERS

    ii Title: A Study of the Composition of Carryover Particles in Kraft Recovery Boilers By: Asghar Khalaj-Zadeh Doctor of Philosophy (PhD) Degree, Graduate Department of Chemical Engineering and Applied Chemistry, University of Toronto, 2008 ABSTRACT Get Price

  • Understanding recovery boiler smelt runoff phenomena

    RECOVER 42 TAPPI JOURNAL | VOL. 14 NO. 1 | JANUARY 2015 of the recovery boiler. This not only has safety implications, but also can have a significant influence on green liquor pro - cess control and causticizing operations. Violent smelt dissolution is aGet Price

  • [PDF] Shattering Kraft Recovery Boiler Smelt by a Steam Jet | …

    Semantic Scholar extracted view of "Shattering Kraft Recovery Boiler Smelt by a Steam Jet" by A. Taranenko Report to 2009 Annual Research Review Meeting of the Consortium on Increasing Energy and Chemical Recovery Efficiency in the Kraft Process,Get Price

  • Acoustic analysis of recovery boiler dissolving tank operation and smelt shattering …

    ABSTRACT: The interaction of molten smelt and water inside a recovery boiler dissolving tank produces loud noise and can be violent even during normal boiler operation. Inadequate shattering of the smelt stream leads to even more violent interaction, as evidenced by an increased acoustic intensity of the dissolving tank.Get Price

  • Oak Ridge National Laboratory | ORNL - Current Understanding Of Cracking Of Recovery Boiler …

    TEMPERATURE STUDIES Much of what has been accomplished in this study of primary air port cracking can be associated with the information collected from thermocouples that have been mounted on air port tubes in a number of recovery boilers in North Get Price

  • A Laboratory Study of Recovery Boiler Smelt Shattering

    1 ! A LABORATORY STUDY OF RECOVERY BOILER SMELT SHATTERING Anton Taranenko, Markus Bussmann* and Honghi Tran Pulp and Paper Centre, and Department of Chemical Engineering & Applied Chemistry * Department of Mechanical & IndustrialGet Price

  • MODELING OF THE ENERGY OF A SMELT-WATER EXPLOSION IN THE RECOVERY BOILER DISSOLVING TANK

    water interaction in the recovery boiler, but only two studies were conducted in the mid-1950s in the context of dissolving tank explosion [8,9]. These smelt-water explosion studies were reviewed by Krause et al in 1973 [10], and 2 by Shick and Grace in 1982 [2]. Get Price

  • (PDF) Characterizing Smelt Shattering Performance in a Recovery …

    2014/6/1 · Kraft recovery boiler smelt is shattered into droplets by a high pressure steam jet, to improve smelt dissolution, and to minimize the violence of smelt-water interaction in the dissolving tank. A Get Price

  • Non-process chemical elements in the kraft recovery system

    In this study the viscosity for the case of sodium carbonate and 30 mole% sulphide has been measured and is of the magnitude 2 – 3 cP at temperatures relevant for a recovery boiler, i.e. similar to water at room temperature.Get Price

  • — Spring Round 2015 Source Emissions Testing

    • Recovery Boiler; • Smelt Dissolving Tank: • Power Boiler: and • High Level Roof Vent. This report is in five sections. Section 1 contains the introduction and the scope of work for the project. The study approach and a brief description of the various pads of theGet Price

  • EXPERIMENTS ON SMELT SHATTERING AND DISSOLUTION

    Fig. 1 - (a) Molten smelt stream from a recovery boiler; (b) smelt shattered by a steam jet. Fig. 2 - Laboratory-scale shattering apparatus. Fig. 3 - Effect of air jet velocity and nozzle distance from the liquid stream on the Sauter Mean Diameter (SMD) of theGet Price

  • TAPPI Journal - June 2015 - Recovery Boiler

    PEER-REVIEWED RECOVERY BOILER An experimental study of smelt-water interaction in the recovery boiler dissolving tank BY ERIC JIN, MARKUS BUSSMANN, and HONGHI TRAN ABSTRACT: A laboratory apparatus was constructed to simulate the operating Get Price

  • Simplifying vintage recovery boiler operation and maintenance

    Simplifying vintage recovery boiler operation and maintenance. Many vintage recovery boilers were designed with two dissolving tanks and more spouts than required. The number of spouts selected was based on a capacity of approximately 700,000 lb DS/day per spout. Valmet's spouts have a design capacity of up to 1.4 million lb DS/day each.Get Price

  • Characterizing Smelt Shattering Performance in a Recovery Boiler

    A smelt stream from the bottom of the recovery boiler is shattered by a steam jet before falling into the dissolving tank. Figure 2. A smelt spout viewed (a) from the front, (b) from above. Note that these pictures do not illustrate shattering, as the shatter jets areGet Price

  • An automated coordinated phosphate/ph controller for industrial boilers …

    1995/12/1 · The two most promising controllers were tested on a 165 psig (1.14 MPa) package boiler, with the final control package field tested in a 900 psig (6.21 MPa) black liquor recovery boiler. This optimized control package uses a self-correcting computerized chemical feed system to produce accurate boiler chemical concentrations.Get Price

  • Publications | Professor Markus BussmannProfessor Markus …

    A. Taranenko, M. Bussmann and H.N. Tran, "A laboratory study of recovery boiler smelt shattering," TAPPI Journal 13(8), 27-34, 2014. P. Isaza, W.D. Warnica and M. Bussmann, "Thermal performance and sizing of moving bed heat exchangers," ASME IMECEGet Price

  • CORROSION ISSUES IN BLACK LIQUOR GASIFIERS - Oak Ridge National Laboratory

    Recovery boilers have been used very successfully for many years, but there are a number of shortcomings. First, as the most expensive component in a paper mill, the boiler is very capital intensive. In addition, the boiler is relatively inefficient in producingGet Price

  • Simplifying vintage recovery boiler operation and maintenance

    Simplifying vintage recovery boiler operation and maintenance. Many vintage recovery boilers were designed with two dissolving tanks and more spouts than required. The number of spouts selected was based on a capacity of approximately 700,000 lb DS/day per spout. Valmet's spouts have a design capacity of up to 1.4 million lb DS/day each.Get Price

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