Half-drying corona discharge process and equipment for cleaning fume

Turbine blade scale sample ingredient all-silicon content determination method

The invention relates to a measuring method of all-silica content in the ingredients of dirt samples of turbine blades, which comprises following steps: A. a test sample is weighed, melted in sodium hydroxide or sodium carbonate and cooled; B. a test solution to be analyzed is prepared through hot water leaching, hydrochloric acid acidizing and dissolving of the cooled test sample; C. according to the silicon content of the test sample, V mL of the test solution to be analyzed is sucked and injected into a polyethylene bottle, and high-purity water is added to lead the volume to be 50 mL; the all-silica content in the prepared solution is measured. The measuring method of the invention solves the problem existing in traditional analyzing methods of dirt and corrosion products of thermal power plants that the analyzing result of silicon dioxide content in the measured ingredients is lower than the actual level, realizes correct analysis of deposited salt and dirt ingredients of the turbine ...

Self-drying corona discharge process and equipment for cleaning fume

A semi-dry corona discharge process for cleaning fume includes introducing the high-temp fume containing SO2 and NOx to spray drying tower, moistening while cooling, introducing it to corona discharge equipment, applying high voltage while introducing ammonia gas, corona discharging to generate strong oxidizing free radicals to trigger chemical reactor for converting SO2 and NOx to ammonium salt particles, separating said particles from fume, exhausting fume, collecting said particles on plate electrode, washing the plate electrode with water, and spraying the washing water into spray drying tower fow generating bigger particles to be recovered.

Ingredient content analytical method for turbine blade salt deposition and scaling

The invention discloses a method for analyzing the salification and scale formation component content of the vanes of a steam turbine, which comprises the following steps: scale sample is weighed and dried, and water content is measured; the ignition increment S1 percent and decrement S2 percent of the scale sample at 450 DEG C and 900 DEG C are measured; the contents of sodium ions and potassiumions in the acid soluble scale sample component are measured; the content of chloride ions CI<-> percent, the content of fluorine ions F<-> percent, the content of sulfuric anhydride SO3 percent, thecontent of phosphoric oxide P2O5 percent, the content of ferric oxide Fe2O3 percent, the content of alumina AI2O3 percent, the content of copper oxide CuO percent, the content of calcium oxide CaO percent and the content of magnesium oxide MgO percent in the scale sample are measured; the full silica content in the alkaline fusion component of the scale sample is measured and presented by SiO2 percent ...

Ingredient content analytical method for turbine blade salt deposition and scaling

The invention discloses a method for analyzing the salification and scale formation component content of the vanes of a steam turbine, which comprises the following steps: scale sample is weighed and dried, and water content is measured; the ignition increment S1 percent and decrement S2 percent of the scale sample at 450 DEG C and 900 DEG C are measured; the contents of sodium ions and potassium ions in the acid soluble scale sample component are measured; the content of chloride ions CI<-> percent, the content of fluorine ions F<-> percent, the content of sulfuric anhydride SO3 percent, the content of phosphoric oxide P2O5 percent, the content of ferric oxide Fe2O3 percent, the content of alumina AI2O3 percent, the content of copper oxide CuO percent, the content of calcium oxide CaO percent and the content of magnesium oxide MgO percent in the scale sample are measured; the full silica content in the alkaline fusion component of the scale sample is measured and presented by SiO2 percent ...

Method for forming ash removing water film for wet electric dust remover and dust collecting pole plate used by same

The invention discloses a method for forming an ash removing water film for a wet electric dust remover and a dust collecting pole plate used by the same. The invention solves the problem that a water film for completely covering the pole plate can not be formed on a super-high pole plate higher than 10 meters, thus the wet electric dust remover can be used for removing dust in super-large-flow flue gas such as flue gas in coal burning boilers of thermal power plants and the like, and the invention has the advantages of reducing floor space, saving dust removing water, and the like. The method for forming the ash removing water film comprises the following steps: dividing the dust collecting pole plate into a plurality of vertical strip-shaped regions along the airflow direction, supplying water to the pole plate from the upper space of the dust collecting pole plate, limiting the dust removing water in each narrow strip-shaped region to flow downwards, and covering each small strip-shaped ...

Wet-dry mixing electric dust remover

The invention relates to a wet-dry mixing electric dust remover. The electric dust remover mainly consists of an inlet smoke box, an air flow uniformly-distributing plate, a shell, a cathode line, an anode plate, an outlet smoke box, an outlet trough-shape plate, a rapping device, an ash bucket, a water distribution device and a water tank. The electric dust remover is characterized in that the upstream in the inflow direction of the smoke gas or the exhaust gas is provided with a dry-type ash removal electric field which adopts mechanical rapping, electromagnetic rapping or acoustic wave to remove the ash, the last electric field is a wet-type ash removal electric field which adopts a water film to remove the ash, the dry-type ash removal electric field and the wet-type ash removal electric field are arranged in the same shell, and the wet-type ash removal electric field is connected with an ash removal water treatment recycling system. The invention integrates the advantages of the dry-type ...

Turbine blade scale sample ingredient all-silicon content determination method

The invention relates to a measuring method of all-silica content in the ingredients of dirt samples of turbine blades, which comprises following steps: A. a test sample is weighed, melted in sodium hydroxide or sodium carbonate and cooled; B. a test solution to be analyzed is prepared through hot water leaching, hydrochloric acid acidizing and dissolving of the cooled test sample; C. according tothe silicon content of the test sample, V mL of the test solution to be analyzed is sucked and injected into a polyethylene bottle, and high-purity water is added to lead the volume to be 50 mL; theall-silica content in the prepared solution is measured. The measuring method of the invention solves the problem existing in traditional analyzing methods of dirt and corrosion products of thermal power plants that the analyzing result of silicon dioxide content in the measured ingredients is lower than the actual level, realizes correct analysis of deposited salt and dirt ingredients of the turbine ...

Method for forming ash removing water film for wet electric dust remover and dust collecting pole plate used by same

The invention discloses a method for forming an ash removing water film for a wet electric dust remover and a dust collecting pole plate used by the same. The invention solves the problem that a water film for completely covering the pole plate can not be formed on a super-high pole plate higher than 10 meters, thus the wet electric dust remover can be used for removing dust in super-large-flow flue gas such as flue gas in coal burning boilers of thermal power plants and the like, and the invention has the advantages of reducing floor space, saving dust removing water, and the like. The method for forming the ash removing water film comprises the following steps: dividing the dust collecting pole plate into a plurality of vertical strip-shaped regions along the airflow direction, supplying water to the pole plate from the upper space of the dust collecting pole plate, limiting the dust removing water in each narrow strip-shaped region to flow downwards, and covering each small strip-shaped ...