Showing results for: flue gas Articles
-
Why Measure Flue Gas Velocity?
Many industrial processes release flue gases to the atmosphere. Under European Directives the majority of those are classed as emission sources and therefore require continuous emission monitoring. European standards for monitoring pollutants and flow for CEMS (Continuous Emission Monitoring Systems) are already in place and other countries usually follow them to some extent. The CODEL VCEM5100 ...
-
Development of durable and reactive regenerable sorbents for high temperature flue gas desulphurisation
One of the emerging technologies for combined SO2 and NOx removal from flue gases is the copper oxide process, which is based on the use of a regenerable sorbent. Sorbent properties such as SO2 sorption capacity, reactivity, crush strength, and long-term durability have significant impact on the overall process cost. In this study, a number of sorbents were prepared by using various modifications ...
-
Continuous Emissions Monitoring – What, Why, and How?
In an ideal world, combustion merely gives emissions of water and carbon dioxide (CO2). Water is a non-issue while CO2 nowadays is looked upon with concern, giving its key role in the global climate changes. However, the issues with emissions do not stop there. The thermal processes also generate nitrogen oxides, primarily NO. Depending on the fuel composition, the type of combustion process, and ...
By OPSIS AB
-
Project Flue Gas Handeling Facility for Precious Metal Recovery, Singapore - Case Study
ECO-Mastermelt Type of contract: EPC Commissioning date: 2016 Industry Precious metal recovery Application Precious metals Location Singapore Plant throughput 1.5 MW thermal ...
-
Mercury emissions of the German cement industry - Case Study
In December 2019 the new BREF (Best Available Technology Reference) document for waste incineration was published in the EU. One important topic in the Best Available Technology (BAT) conclusions is the request for continuous monitoring of mercury (Hg) emissions. In the BAT conclusions are mentioned so-called BAT-Annual Emission Levels (AELs) for daily averages, with Hg concentrations in the ...
By ENVEA
-
Comparative sensitivity study for operational short range atmospheric dispersion models
Eight atmospheric dispersion models are compared in a sensitivity study in which the responses towards variations in model input parameters are evaluated. For a single source the values of eight practical model input parameters are varied. The model response is evaluated by examining the maximum value of the 98th percentile of the hourly averaged concentration values. The results are represented ...
-
Waste-to-energy (WTE) plant waste gas treatment
Waste to energy (WTE) plants convert solid waste into electricity and/or heat. However, the combustion of solid waste generates flue gases that contain a variety of pollutants, such as particulate matter, sulfur dioxide, nitrogen oxides, and heavy metals. These pollutants can be harmful to human health and the environment if released into the atmosphere, so it is essential to treat the flue gases ...
-
Bio-desulfurization and denitrification by anaerobic-anoxic process for the treatment of wastewater from flue gas washing
For amine-based carbon dioxide capture, nitrogen oxides and sulfur oxides were the main pollutants that had a negative effect on the regeneration of solvent. Before carbon dioxide capture, the sulfur oxides in flue gas should be removed by the method of calcium salt, and then washed by alkaline solution to eliminate the residual nitrogen oxides and sulfur oxides. The washing wastewater ...
-
Wet Flue Gas Desulfurization System
Installing the optimum wet flue gas desulfurization technology, B&V Energy is bringing superior multi-pollutant removal technology to the North American utility marketplace. To help make a positive impact on the global environment and to comply with the Clean Air Interstate and Clean Air Mercury Rules, Dayton Power & Light needed to remain in compliance as more stringent air quality ...
-
Case study - Ljusdal Energi, Sweden
At Ljusdal Energy, a shell & tube-condenser is installed. The technique takes a bit more space and gives almost the same performance as a lamella type. However, the customer desired tube technology. The condenser will handle the flue gases of two boilers that can be in operation independently. Boiler: 2×10 MW Fuel: Biofuels Condensor: 4 MW Total power delievered to distant heating ...
-
Removal of sulfate from wet FGD wastewater by co-precipitation with calcium hydroxide and sodium aluminate
Chemical precipitation method was adopted to remove sulfate from wet flue gas desulfurization (FGD) wastewater and mixtures of Ca(OH)2 (CH) and NaAlO2 (SA) were used as precipitants. The mechanisms of sulfate removal were explored according to the experimental and simulated results. These showed that three kinds of precipitations, which were gypsum, ettringite and co-precipitation onto ...
-
Regulating Mercury Emissions
Historically, mercury (Hg) has found its use in many products such as thermometers, batteries, and fluorescent lamps. However, mercury is extremely toxic, and it has in modern days been banned from use in most applications. By example, the Minamata Convention on Mercury from 2013 has been designed to prevent releases of mercury and mercury compounds in order to protect human health and the ...
By OPSIS AB
-
Värtan Kvv8 Project - Case Study
Fortum Värme new plant - KVV8 at Värtaverket in Stockholm, with its 345MW is to our knowledge the largest biomass-fired boiler equipped with flue gas condensation. In favourable operating conditions a whopping 100 MW heat can be recovered by condensation. Radscan delivery is composed of condensation with combustion air moistening and pre-heating. Condensate purification up to boiler ...
-
Ca removal and Mg recovery from flue gas desulfurization (FGD) wastewater by selective precipitation
Selective removal of Ca and recovery of Mg by precipitation from flue gas desulfurization (FGD) wastewater has been investigated. Thermodynamic analysis of four possible additives, Na2CO3, Na2C2O4, NaF and Na2SO4, indicated that both carbonate and oxalate could potentially provide effective separation of Ca via precipitation from Mg in FGD wastewater. However, it was found experimentally that ...
-
CO2 absorption study in a bubble column reactor with Mg(OH)2
CO2 from the combustion of fossil fuels is the largest source of greenhouse gas emissions in the USA. Recently, there has been a growing interest in economical processes for the separation and sequestration of CO2 emissions from flue gas. The goal of this study was to study the absorption characteristics of CO2 from a simulated flue gas using reclaimed Mg(OH)2 slurries. Mg(OH)2 has been selected ...
-
Formulation and optimization of biological removal of flue gas pretreatment wastewater and sulfur recycling process by Box–Behnken design
The aim of this study was to investigate optimum conditions for biological removal of flue gas pretreatment wastewater and achieve maximum elemental sulfur yield. A three-factor, three-level Box–Behnken design was used to derive a second-order polynomial equation and construct contour plots to predict responses. The independent variables selected were hydraulic retention time (X1), inlet ...
-
Crazy sulphur dioxide needs gentle sulphur dioxide sensor to appease
Background- The most important corrosive gas in the atmosphere is SO2, which accelerates the corrosion process of most metals. My country is the largest coal producer and consumer in the world. SO2 pollution is very serious. In some areas, the SO2 content in the atmosphere exceeds that of the environment. 60% of capacity. Therefore, for SO2 monitoring we will use accurate and sensitive ...
-
Mercury: measure and control
Following the new EU BREF document for waste incineration, European cement plants have to implement the requirement to continuously monitor and abate mercury emissions. To enable this they will need to apply technologies that measure mercury in the raw gas and optimise sorbent use. In December 2019 the new BREF (Best Available Technology Reference) document for waste incineration was published ...
By ENVEA
-
6 Tips for Reducing NOx Emissions
Many industrial processes utilize the combustion of natural gas, oil, or coal. However, the combustion of these fossil fuels produces nitrogen oxide or NOx, which contributes to smog and air pollution. Finding an effective and efficient solution for emissions can be frustrating and time consuming. In addition, federal regulations and energy standards can change, impacting your operational ...
-
New! ENVEA SM-5 Continuous Mercury Monitor
Total Mercury Emissions Monitor in Stack Flue Gases Beneficiary of over 20 years of experience in mercury measurement, the new SM-5 CEMS Hg analyzer is designed to provide extremely accurate and reliable continuous measurements of very low concentrations of Hg in flue gas emissions. The SM-5 features short response times, dynamic ranges and stable measurement under all circumstances. To see ...
By ENVEA
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you