Determining a white plume control line of smoke after wet desulphurization includes: drawing a saturated air enthalpy humidity curve or equivalent; obtaining annual temperature and humidity change data of located cities or regions along with the time at the frequency of at least one datum every day; drawing the data obtained in the saturated air enthalpy humidity curve; and drawing a tangent line on the saturation curve by using each meteorological point in a chart, the right lower side of the tangent line is a de-pluming control region, the de-pluming effect superior to that at the feature meteorological point can be realized when the smoke enters the region after regulation, a region defined by the de-pluming control line and the saturation curve at a low-temperature side forms a de-pluming day number control region, and the point number falling within the region is the white plume generating day number.

Systems and methods for multi-variable flare control include receiving, at a flare controller, a plurality of flare characteristics from a flare monitor. The flare monitor may be an optical flare monitor. The plurality of flare characteristics may include, but are not limited to, Combustion Efficiency (CE), Smoke Index (SI), Flame Stability (FS), Flame Footprint (FF), and Heat Release (HR). The flare controller analyzes a plurality of the flare characteristics and outputs a control signal to control an operating condition of the flare, such as an amount of assist media being fed to the flare. Iterations of the control signal may be bounded by a step value defining a maximum increase or decrease in the control value as compared to the previous control value.

A smoke removal device includes a connecting tube, a burner, and a plurality of heat storage meshes. The connecting tube has an inlet end and an outlet end. The burner is disposed in the connecting tube and has a flame outlet. The heat storage meshes are sequentially disposed between the flame outlet and the outlet end. The heat storage meshes includes a first heat storage mesh and a second heat storage mesh. The first heat storage mesh is located between the second heat storage mesh and the flame outlet. A mesh-number of per unit area of the first heat storage mesh is larger than that of the second heat storage mesh. The first heat storage mesh and the second heat storage mesh could slow down a flow rate of flame to increase temperatures of the heat storage meshes. The smoke is burned off once touching the heat storage meshes.

A process for cleaning process gas removes sulfur oxides (SOx), nitrogen oxides (NOx), and particulate matter (PM) to produce a tail gas substantially free of these pollutants. The process oxidizes and absorbs SOx and NOx for storage as liquid acids. In some embodiments a PM removal stage and/or a SOx removal stage are provided in a close-coupled higher-pressure environment upstream from a turbocharger turbine. The process has example application in cleaning exhaust gases from industrial processes and large diesel engines such as ship engines.

An exhaust plume control structure includes a mounting member configured to mount to an exhaust flow source. A diverter member is coupled to the mounting member to radially direct an initial exhaust flow exiting from the exhaust flow source radially outward. A plurality of peripherally spaced, radially extending vanes are coupled to the mounting member and radially outward of the diverter member to separate the radially outward directed initial exhaust flow into a plurality of additional exhaust flows. Each vane has a radially diverging cross-section. Each of the plurality of additional exhaust flows has a same radial exit velocity. The structure reduces exhaust flow velocity and may provide back pressure to the initial exhaust flow. The structure has a sound power level of less than 115 dBA. A power generating plant including the structure is also disclosed.

A smoke removal device includes a connecting tube, a burner, and a plurality of heat storage meshes. The connecting tube has an inlet end and an outlet end. The burner is disposed in the connecting tube and has a flame outlet. The heat storage meshes are sequentially disposed between the flame outlet and the outlet end. The heat storage meshes includes a first heat storage mesh and a second heat storage mesh. The first heat storage mesh is located between the second heat storage mesh and the flame outlet. A mesh-number of per unit area of the first heat storage mesh is larger than that of the second heat storage mesh. The first heat storage mesh and the second heat storage mesh could slow down a flow rate of flame to increase temperatures of the heat storage meshes. The smoke is burned off once touching the heat storage meshes.

Exhaust plume abatement systems and methods are provided. A representative system, which is configured for use with a heating appliance, incorporates: a housing defining an interior chamber; an exhaust gas inlet configured to receive exhaust gas from the heating appliance; a first heat exchanger, disposed within the interior chamber; a dilution air inlet configured to receive dilution air from outside the housing; an exhaust gas outlet communicating with the interior chamber; wherein the interior chamber is configured to receive the exhaust gas from the exhaust gas inlet and the dilution air to form low humidity exhaust gas, which exhibits a lower humidity than the exhaust gas received from the heating appliance; and wherein the exhaust gas outlet is configured to output the low humidity exhaust gas with no visible exhaust plume.

This disclosure relates to a process for steam plume suppression. The process involves using thermosyphon shell and tube heat exchangers to cool a hot gas stream, using a wet scrubber to clean the cooled hot gas stream and generate a wet gas comprising water vapor, and using thermosyphon shell and tube heat exchangers to heat the wet gas above the dew point. This disclosure also relates to a steam plume suppression system. The system involves thermosyphon shell and tube heat exchangers and a wet scrubber.

Determining a white plume control line of smoke after wet desulphurization includes: drawing a saturated air enthalpy humidity curve or equivalent; obtaining annual temperature and humidity change data of located cities or regions along with the time at the frequency of at least one datum every day; drawing the data obtained in the saturated air enthalpy humidity curve; and drawing a tangent line on the saturation curve by using each meteorological point in a chart, the right lower side of the tangent line is a de-pluming control region, the de-pluming effect superior to that at the feature meteorological point can be realized when the smoke enters the region after regulation, a region defined by the de-pluming control line and the saturation curve at a low-temperature side forms a de-pluming day number control region, and the point number falling within the region is the white plume generating day number.

Methods, apparatus, systems, and articles of manufacture are disclosed to measure fallout from a liquid flare burner. An example apparatus includes a device configurator to invoke a first control valve to isolate the liquid flare burner from a test fluid source, and invoke a second control valve to fluidly couple the liquid flare burner to a hydrocarbon source to generate unburned fallout droplets to be captured by first and second measurement surfaces in first and second measurement regions, a parameter calculator to calculate first and second fallout volumes associated with the unburned fallout droplets captured by the first and second measurement surfaces, and determine a fallout efficiency of the liquid flare burner based on the first and second fallout volumes, and a burner configurator to, in response to the fallout efficiency not satisfying a fallout efficiency threshold, adjust a configuration of the liquid flare burner based on the fallout efficiency.