Control system for inhibiting coking of heating surface of coal-fired boiler

• Main Authors: SHI QUANCHENG, ZHANG YUTAO, ZHU JINQING, TIAN YONGQIANG, HE XIANG, WU CHENGGANG, LV WEIZHI, TAO LI
• Format: Patent
• Language: Chinese; English
• Published: 06.06.2023
• Subjects: BLASTING; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEATING; LIGHTING; MECHANICAL ENGINEERING; METHODS OF STEAM GENERATION; STEAM BOILERS; STEAM GENERATION; SUPERHEATING OF STEAM; WEAPONS

The invention discloses a control system for inhibiting coking of a heating surface of a coal-fired boiler. The control system comprises a first temperature measuring device, a second temperature measuring device, a third temperature measuring device, a third temperature measuring device, a fourth temperature measuring device and a fourth temperature measuring device, the third temperature measuring device is used for monitoring the flue gas temperature of an inlet of the final-stage reheater; the nano ceramic material spraying layer is arranged on the water cooling wall; based on initial temperature data monitored by the first temperature measuring device, the second temperature measuring device and the third temperature measuring device, the area of the nano ceramic material spraying layer is set, so that the water cooling wall has the heat absorption capacity within a proper range; and the flue gas temperature of an inlet of the partition screen superheater is controlled to be T1, the flue gas temperature