Tail gas heat energy recovery and microwave desulfurization and dehydration treatment equipment

Abstract

Disclosed is an exhaust heat energy recovery and microwave desulfurization and dewatering process device. According to the exhaust heat energy recovery and microwave desulfurization and dewatering process device, boiler exhaust can inlet into a flue made of thermal insulation materials to heat a metal housing inside the flue through waste heat; a continuous-operation coal conveyor belt is arranged inside the metal housing, and briquette coal mixed by coal, desulfurizer and denitrifier is fed through the flue from top to bottom into the coal conveyer belt inside the metal housing and then moves at a constant speed for a certain distance of L; the briquette coal is heated through the waste heat of the boiler exhaust to remove elemental sulfur and moisture, specifically, within the movement distance of L inside the metal housing, the heat energy of the exhaust serves as main heat energy and microwaves serve as auxiliary supplementary heat energy to heat the briquette coal to a temperature range of 80-123 DEG C for a time period of t3, so that the elemental sulfur and the moisture inside the briquette coal can be sublimated and removed. The exhaust heat energy recovery and microwave desulfurization and dewatering process device has the advantages that, by desulfurizing and dewatering the coal before combustion through the heat energy recovered from the exhaust and recovering the energy of the exhaust, the effective energy transformation ratio of the coal can be improved, discharge of sulfur oxide and sulfide can be greatly reduced, and further energy conservation and emission reduction can be achieved.

Description

technical field

[0001] The invention belongs to the field of thermal power generation, the field of industrial boilers, the field of ships and ships and the field of coal combustion. Background technique

[0002] The existing technology is that boiler combustion tail gas contains a large amount of heat energy that cannot be completely recovered, and is directly discharged into the air, which wastes energy and resources, pollutes the environment, and generally increases the atmospheric temperature. At the same time, the fuel coal contains a large amount of water and elemental sulfur, and a large amount of water enters Boiler combustion chamber will greatly reduce boiler heat conversion efficiency, waste resources and energy, and sulfur will produce sulfide and sulfur oxides in the boiler combustion chamber to pollute the air and endanger human living space. Contents of the invention

[0003] Aiming at the above-mentioned common defects, a treatment equipment for tail gas he...