Biomass ash alkalinity reduction for land application via CO2 from treated boiler flue gas

Fuel ◽  
2014 ◽  
Vol 136 ◽  
pp. 208-218 ◽  
Author(s):  
Fanghui Dong ◽  
Donald W. Kirk ◽  
Honghi Tran
Keyword(s):  
Flue Gas ◽  
Land Application ◽  
Biomass Ash ◽  
Ash Alkalinity

Land Application Effects of a High-Calcium, Dry Flue Gas Desulfurization By-Product on Trace Elements in Runoff from Natural Rainfall

2018 ◽  
Vol 229 (2) ◽  
Author(s):  
Jason R. Burgess-Conforti ◽  
Kristofor R. Brye ◽  
David M. Miller ◽  
Erik D. Pollock ◽  
Lisa S. Wood
Keyword(s):  
Trace Elements ◽  
Flue Gas ◽  
Land Application ◽  
Flue Gas Desulfurization ◽  
Natural Rainfall ◽  
High Calcium

scholarly journals Fertilization efficiency of wood ash pellets amended by gypsum and superphosphate in the ryegrass growth    

2017 ◽  
Vol 63 (No. 2) ◽  
pp. 47-54 ◽  
Author(s):  
Ochecová Pavla ◽  
Mercl Filip ◽  
Košnář Zdeněk ◽  
Tlustoš Pavel
Keyword(s):  
Flue Gas ◽  
Plant Biomass ◽  
Wood Ash ◽  
Flue Gas Desulfurization ◽  
Biomass Ash ◽  
Single Superphosphate ◽  
Fgd Gypsum ◽  
Soil Enrichment ◽  
P Content ◽  
Uptake Of Nutrients

Application of biomass ash to soil can save mineral nutrients due to its relatively high contents of Ca, K, and P. The study assessed the effect of powdered ash and pellets made from wood fly ash (WFA), combined moreover with additives rich in S (flue gas desulfurization gypsum – FGDG) and P (single superphosphate – SP) on the yield and uptake of nutrients (Ca, K, P, and S) by ryegrass (Lolium perenne L.), the accumulation of nutrients in plant biomass at individual four cuttings, and the available nutrients amount in the acidic loamy soil after the last harvest. Plants grown in pots enriched by wood ash showed significantly higher yield and nutrient uptake than in the unamended treatments. The uptake of nutrients by plants, content of nutrients in plants and in soil was substantially positively influenced by both components added to the wood ash, especially by FGD gypsum. The combination of wood ash with additives proved to be effective. The soil enrichment by WFA + SP + FGDG increased the availability of SP-contained P and available P content in soil even after harvest.  

scholarly journals Land application uses for dry flue gas desulfurization by-products: Phase 3

10.2172/6565 ◽  
1999 ◽  
Author(s):  
W. Dick ◽  
J. Bigham ◽  
R. Forster ◽  
F. Hitzhusen ◽  
R. Lal ◽  
...  
Keyword(s):  
Flue Gas ◽  
Land Application ◽  
Flue Gas Desulfurization ◽  
Phase 3 ◽  
By Products

scholarly journals Land application uses for dry flue gas desulfurization by-products. Executive summary

10.2172/6562 ◽  
1999 ◽  
Author(s):  
W. Dick ◽  
J. Bigham ◽  
R. Forster ◽  
F. Hitzhusen ◽  
R. Lal ◽  
...  
Keyword(s):  
Flue Gas ◽  
Land Application ◽  
Flue Gas Desulfurization ◽  
Executive Summary ◽  
By Products

Flue gas desulfurization gypsum as a chemical amendment to reduce the concentrations of phosphorus and suspended solids in liquid manure

2017 ◽  
Vol 28 (5) ◽  
pp. 624-631 ◽  
Author(s):  
Leandro Michalovicz ◽  
Warren Albert Dick ◽  
Eduardo Cimino Cervi ◽  
Cassio Antonio Tormena ◽  
Marcelo Marques Lopes Müller
Keyword(s):  
Flue Gas ◽  
Suspended Solids ◽  
Mass Difference ◽  
Colorimetric Method ◽  
Land Application ◽  
Field Application ◽  
Flue Gas Desulfurization ◽  
Liquid Manure ◽  
Content Type ◽  
Fgd Gypsum

Purpose Animal liquid manure contains large amounts of phosphorus (P), which is susceptible to runoff losses when manure is surface-applied on farms as a soil amendment. Even very small quantities of P can have a large impact on waterways and lead to eutrophication. Previous studies have shown that flue gas desulfurization (FGD) gypsum, a coal combustion by-product, can reduce P losses from runoff in soils. Therefore, the authors hypothesize that FGD gypsum could reduce nutrients in liquid manure prior to field applications. The purpose of this paper is to evaluate the effect of FGD gypsum to reduce P and suspended solids (SS) concentrations in liquid manure, also determining its proper rate(s) and minimum time of reaction. Design/methodology/approach The experimental design was completely randomized with three replicates. Each plot was constituted by a polyvinyl chloride (PVC) column (1 m height and 0.15 m diameter). Dairy liquid manure and FGD gypsum rates (0, 0.62, 1.25 and 2.5 mgl−1) were added to the PVC columns and manually shaken for two minutes. Sampling was performed at 0.35, 0.65 and 0.95 m depths after 0 (immediately after shaking), 4, 8, 16 and 24 hours. Amount of phosphorus was determined by a colorimetric method and solids concentration by mass difference. Findings FGD gypsum reduced P concentrations in the liquid manure after four hours of reaction. The most effective rate was 0.62 mgl−1at a 0.35 m depth. FGD gypsum increased SS concentrations in depth in all treatments. Originality/value There are growing concerns regarding the fate of nutrients, especially phosphorus, from land application of animal waste. The results indicated that treating liquid manure in the settling tanks with FGD gypsum before field application can be particularly useful on farms where surface-manure is applied, reducing potential losses of P following manure applications, and consequently the eutrophication risk to waterways.

scholarly journals Experimental and numerical study on combustion of baled biomass in cigar burners and effects of flue gas re-circulation

2016 ◽  
Vol 20 (suppl. 1) ◽  
pp. 151-165 ◽  
Author(s):  
Aleksandar Eric ◽  
Stevan Nemoda ◽  
Dragoljub Dakic ◽  
Branislav Repic ◽  
Dejan Djurovic
Keyword(s):  
Combustion Chamber ◽  
Flue Gas ◽  
Numerical Study ◽  
Combustion Process ◽  
Maximum Temperature ◽  
Biomass Combustion ◽  
Biomass Ash ◽  
Maximum Temperatures ◽  
Gas Recirculation ◽  
The Impact

The paper presents results of experimental and numerical investigation addressing combustion of baled agricultural biomass in a 50 kW experimental furnace equipped with cigar burners. Experiments performed included measurements of all parameters deemed important for mass and energy balance, as well as parameters defining quality of the combustion process. Experimental results were compared with results of numerical simulations performed with previously developed CFD model. The model takes into account complex thermo mechanical combustion processes occurring in a porous layer of biomass bales and the surrounding fluid. The combustion process and the corresponding model were deemed stationary. Comparison of experimental and numerical results obtained through research presented in this paper showed satisfactory correspondence, leading to the conclusion that the model developed could be used for analysis of different effects associated with variations in process parameters and/or structural modifications in industrial biomass facilities. Mathematical model developed was also utilized to examine the impact of flue gas recirculation on maximum temperatures in the combustion chamber. Gas recirculation was found to have positive effect on the reduction of maximum temperature in the combustion chamber, as well as on the reduction of maximum temperature zone in the chamber. The conclusions made provided valuable inputs towards prevention of biomass ash sintering, which occurs at higher temperatures and negatively affects biomass combustion process.

Locomotive Boiler Flue Gas Analysis*

1912 ◽  
Vol 74 (1914supp) ◽  
pp. 159-160
Author(s):  
Lawford H. Fry
Keyword(s):  
Flue Gas ◽  
Gas Analysis

Could biomass-fueled boilers be operated at higher steam temperatures? Part 3: Initial analysis of costs and benefits

TAPPI Journal ◽  
2014 ◽  
Vol 13 (8) ◽  
pp. 65-78 ◽  
Author(s):  
W.B.A. (SANDY) SHARP ◽  
W.J. JIM FREDERICK ◽  
JAMES R. KEISER ◽  
DOUGLAS L. SINGBEIL
Keyword(s):  
Flue Gas ◽  
Power Plants ◽  
Superheated Steam ◽  
Black Liquor ◽  
Simulation Software ◽  
Operating Conditions ◽  
Costs And Benefits ◽  
Steam Generation ◽  
Fireside Corrosion ◽  
Corrosion Resistant

The efficiencies of biomass-fueled power plants are much lower than those of coal-fueled plants because they restrict their exit steam temperatures to inhibit fireside corrosion of superheater tubes. However, restricting the temperature of a given mass of steam produced by a biomass boiler decreases the amount of power that can be generated from this steam in the turbine generator. This paper examines the relationship between the temperature of superheated steam produced by a boiler and the quantity of power that it can generate. The thermodynamic basis for this relationship is presented, and the value of the additional power that could be generated by operating with higher superheated steam temperatures is estimated. Calculations are presented for five plants that produce both steam and power. Two are powered by black liquor recovery boilers and three by wood-fired boilers. Steam generation parameters for these plants were supplied by industrial partners. Calculations using thermodynamics-based plant simulation software show that the value of the increased power that could be generated in these units by increasing superheated steam temperatures 100°C above current operating conditions ranges between US$2,410,000 and US$11,180,000 per year. The costs and benefits of achieving higher superheated steam conditions in an individual boiler depend on local plant conditions and the price of power. However, the magnitude of the increased power that can be generated by increasing superheated steam temperatures is so great that it appears to justify the cost of corrosion-mitigation methods such as installing corrosion-resistant materials costing far more than current superheater alloys; redesigning biomassfueled boilers to remove the superheater from the flue gas path; or adding chemicals to remove corrosive constituents from the flue gas. The most economic pathways to higher steam temperatures will very likely involve combinations of these methods. Particularly attractive approaches include installing more corrosion-resistant alloys in the hottest superheater locations, and relocating the superheater from the flue gas path to an externally-fired location or to the loop seal of a circulating fluidized bed boiler.

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