Improved Materials for High-Temperature Black Liquor
Improved Materials for High-Temperature Black Liquor Gasification James R. Keiser and James G. Hemrick Oak Ridge National Laboratory J. Peter Gorog and Ray Leary Weyerhaeuser Company June 2006 Prepared by OAK RIDGE NATIONAL LABORATORY P.O. Box 2008 Oak Ridge Tennessee managed by UT-Battelle LLC for the U.S. DEPARTMENT OF ENERGY
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Request PDF Materials issues in high temperature black liquor gasification Gasification is a potentially more efficient means to recover the energy contained in black liquor than is achieved
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Rheological properties of thick kraft black liquor at high temperature with the addition of sodium aluminate Yue X. Du X. and Xu Y. (2017). "Rheological properties of thick kraft black liquor at high temperature with the addition of sodium aluminate " BioRes. 12 (4) .
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Black Liquor Processing Black liquor is both a product of and contributor to pulp and paper processing. It has been part of the milling process since the beginning of the industry according to the U.S. Department of Energy (DOE). This primarily liquid mixture of pulping residues (like lignin and hemicellulose) and inorganic chemicals (sodium hydroxide and sodium sulfide for example) is
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Feb 13 2017 · Recovery of Heat from Combustion of Organics The organic compounds in black liquor serve as a fuel for the production of steam which is used to generate electricity. The heat released as a result of black liquor combustion is recovered as high pressure/temperature. Depending on the quality of the steam and the type of the turbine a 1000 t/d
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Selection of suitable containment materials has been a major obstacle in the successful implementation of black liquor gasification. Through examination of exposed components laboratory corrosion tests and cooperative efforts with refractory manufacturers there fractory materials issues in high temperature black liquor gasification are being
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Spraying BL on walls of high-temp gasifiers. Ramifications of black liquor spray deposition on the walls of high-temperature entrained-flow gasifiers with respect to reactor containment (corrosion and chemical attack of refractory) and performance (e.g. carbon conversion raw gas quality green liquor quality). Fate of minor species.
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Typically the organic constituents in black liquor are 40 –45 w/w soaps 35 –45 w/w lignin and 10 –15 w/w other (miscellaneous) organic materials. The organic constituents in the black liquor are made up of water-/alkali-soluble degradation components from the wood.
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Thus black liquor gasification (BLG) involves multiple phases of inorganic solids and solution (e.g. Na 2 CO 3 Na 2 S) in addition to the gas phase (mainly H 2 CO CO 2 H 2 O and CH 4 ) small amounts of condensed hydrocarbon (tar) and simple solid phase matter
Get PriceBlack Liquor Treatment in Paper Pulping Process. Part 1
Black liquor refers to the washing liquid of pulp after digesting and washing in the process of sulfate or alkaline pulping process. The black liquor is black which contains the inorganic substances in the cooking agent the degradation products and organic acids of lignin hemicellulose and cellulose which are dissolved from the plant fiber
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Black Liquor Atomizing Steam Quench Circulation Punp Green Liquor Ventu Venturi 66 GPM 270°F 70 DS 13 400 CFM 900°F 1 750°F Cooling Water 040623 ITP 3 Improved Materials For High-Temperature Black Liquor Gasification Goals Develop better refractories and other structural components for use under current and future gasification conditions
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High Temperature Liquors and Permeation Black and White liquor are the most aggressive applications in the mill as the combination of high temperature and harsh chemicals can drive permeation in Teflon liners. Permeation is the molecular diffusion of a fluid or vapor through
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The black liquor is an aqueous solution of lignin residues hemicellulose and the inorganic chemicals used in the process. The black liquor comprises 15 solids by weight of which two thirds are organic chemicals and the remainder are inorganic. Normally the organics in black liquor are 40-45 soaps 35-45 lignin and 10-15 other organics.
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treatment of black liquor (BL). Black liquor is a water solution of the non-cellulose portion of the wood (mainly lignin) and the spent pulping chemicals (Na 2CO 3 K 2CO 3 and Na 2S). Development of new refractory materials for the black liquor gasification (BLG) application is a critical issue for implementation of this technology.
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Black liquor refers to the washing liquid of pulp after digesting and washing in the process of sulfate or alkaline pulping process. The black liquor is black which contains the inorganic substances in the cooking agent the degradation products and organic acids of lignin hemicellulose and cellulose which are dissolved from the plant fiber
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05314 Materials Performance in High Temperature Black Liquor Gasification 05314 Materials Performance in High Temperature Black Liquor Gasification
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3.1-3 Slide 13 Black Liquor Properties • Basis of evaporation equipment design • Changes in liquor cycle chemistry can impact evaporator performance if properties depart from design valuesViscosityBoiling point riseConcentration of scaling species Slide 14 shows that black liquor is typically about one- third inorganic and two-thirds organic material.
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2 MATERIAL EXPERIMENTAL AND ANALYTICAL METHODS USED 9 2.1 Chemicals 9 2.1.1 Black liquor smelt components 9 2.1.2 Refractory lining 9 2.2 Analytical and experimental equipment 10 2.2.1 Glove box 10 2.2.2 High temperature microscopy (HTM) 11 2.2.3 X-ray powder diffraction (XRD) and high temperature X-ray powder diffraction (HT-XRD) 12
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A concentrated aqueous black liquor containing carbonaceous material and alkali metal sulfur compounds is treated in a gasifier vessel containing a relatively shallow molten salt pool at its bottom to form a combustible gas and a sulfide-rich melt. The gasifier vessel which is preferably pressurized has a black liquor drying zone at its upper part a black liquor solids gasification zone
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A methodology has been established for the selection of materials for refractory linings in black liquor gasifiers that are to be employed by the pulp and paper industry. As a first step a thermodynamic software package was used to determine that black liquor smelt was composed of a liquid solution of primarily Na 2 CO 3 and Na 2 S under the
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And Selection Of Conta inment Materials For High -Temperature Black Liquor Gasification " Proceedings of TAPPI Engineering Pulping and Environmental Conference TAPPI
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high-temperature black liquor gasification at 3 MPa and 800 C with pure oxygen as the oxidizing agent 21 22 . The amount of black liquor was set to 1600 tons per day of dry solids (tpd DS) which represent 85 wt. of black liquor. The temperature of black liquor and oxygen at the input of the gasifier was set to 120 C. The calculated amount
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Black Liquor Thermal Properties • Properties needed for detailed calculations noted in paper.Thermal conductivitySpecific heat (Cp)Heat of vaporization Slide 18 Typical Black Liquor Viscosities • Viscosity of room temp water 1 cp (mPa-s) • Viscosity of SAE 30 oil at 80°F 200 cp (mPa-s) BL Dry Solids 18 21 26 34 42
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ITP Materials Materials for High-Temperature Black Liquor Gasification Subject The goal of this project is to develop improved corrosion-resistant refractories and nozzle materials for use in high-temperature atmospheric-black liquor gasifiers. Created Date 8/15/2006 4 01 28 PM
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boilers for processing of the black liquor. High-temperature low-pressure gasification. A schematic of the high-temperature low-pressure (HTLP) gasifier is shown in Fig. 3. In this refractory lined vessel the black liquor fuel and the air for partial combustion are injected at the top of the vessel. The organic material contained in the black
Get PriceEfficient exfoliation of layered materials by waste liquor
pulping black liquor was used as dispersant with high concentration of lignin to get single- and few-layered nanoplatelets. The whole process required only the high-shear mixing of 2D layered materials and pulping waste liquor. This method was not only simple and efficient but also environmentally friendly and resource-recycling.
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High Yields of Bio Oils from Hydrothermal Processing of Thin Black Liquor without the Use of Catalysts or Capping Agents Alexander Orebom † J. Johan Verendel † and Joseph S. M. Samec † ‡ †RenFuel AB Sturegatan 38 114 36 Stockholm Sweden ‡Department of Organic Chemistry Stockholm University 106 91 Stockholm Sweden S Supporting Information
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A method of cellulosic raw material desilication involves the steps of impregnating the cellulosic raw material with a solution containing sodium carbonate to form a silica-containing impregnation black liquor and an at least partially desilicated raw material separating the silica-containing impregnation black liquor from the at least partially desilicated raw material causticizing the
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wood chips and the actual process parameters. Exposure limits have not been established for black liquor. Black liquor may contain varying percentages of solids ranging from 2 to 80 . The chemical composition of black liquor varies based on its solids content. Content of TRS gases are also variable based on whether it is a strong or weak
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Alternate Materials For Superheater Corrosion Studies (Alloy Sets For Different Test Conditions) SS 347H Bal. 18 10---SA213 T91 Bal. 9 ---1 Low Temperature Alloy Set (A1) High Temperature Alloy Set (A2) Alloy 693 5.1 29 61 0 3.4Al Alloy 33 Bal. 33 32 1.5 Alloy 28 Bal. 27 31 3.5 SS 310H Bal. 25 20---Alloy 33 Bal. 33 32 1.5 Alloy 28 Bal. 27 31 3.5
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