DEVICE FOR REMOVAL OF PARTICULATES FROM EXHAUST AND FLUE GAS

• Main Authors: PINTI, MEDARDO, GIROMELLA, GIAN PAOLO, COLLETTA, ANGELO
• Format: Patent
• Language: English; Korean
• Published: 09.10.1993
• Edition: 5
• Subjects: BLASTING; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; COMBUSTION PROCESSES; CONSUMING WASTE PRODUCTS BY COMBUSTION; CREMATION FURNACES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROMSOLID MATERIALS OR FLUIDS; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; WEAPONS

The particulate removal device comprises a two-pole high-voltage generator and a number of conductors alternately connected to one or other of the poles. The conductors each consist of a conductive metal grid arranged inside the pipe perpendicular to the general direction of flow of the exhaust gases. The ratio between the cross-sectional area of each grid and that of the pipe cross-section is pref. less than 50% and more than 10% and pref. less than 35% to provide a good balance between not unduly obstructing the cross-section of the pipe while having an adequate area covered by the electric discharge. Alternatively, the conductors can consist of grids and/or plates and/or wires, e.g. arranged to form flats or tubes, set parallel to the general direction of flow of the exhaust gases. The conductors may have points protruding at right angles from their surface. The voltage supply to the conductors is preferably such as to provide an electric field between 50 and 98% of that which would cause a discharge in the gas at the operating temperature and under the relevant working conditions. A valved conduit or line and a pipe introduces air into the pipe and is controlled using a probe which analyses the exhaust gas and transmits the results to a microprocessor which controls a pump and a valve for introducing the desired quantity of air into the pipe upstream of the conductors.