EXHAUST-GAS TREATMENT SYSTEM

• Main Authors: USHIKU TETSU, MIYACHI TSUYOSHI, KAMIYAMA NAOYUKI, KAGAWA SEIJI
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2018
• Subjects: BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; FLUES; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; 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; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; SEPARATION; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS; SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS; TRANSPORTING; WEAPONS

This exhaust-gas treatment system is equipped with: a heat recovery unit 104 which is equipped with a heat transfer tube 115 for partially recovering the heat of exhaust gas G2; an electric dust collector 105 which removes the dust in the exhaust gas G3 after heat recovery; a desulfurization device 107 which removes the sulfur oxide in exhaust gas G5; a reheater 108 which is equipped with a heat transfer tube 115 for heating exhaust gas G6; a heat medium circulation pipe 110 which circulates a heat medium 83 between the heat recovery unit 104 and the reheater 108; a heat medium heater 86 whichis provided in the heat medium circulation pipe 110 so as to heat the heat medium 83; an ammonia meter 200 which detects the state of ammonia at the outlet of a denitrification device 102; and a control device 201 which controls the heat medium heater 86 on the basis of the ammonia concentration value of the ammonia meter 200. The control device 201 causes the heat medium heater 86 to heat the heat medium 83 if the ammon