System for recycling waste heat of pyrolyzing furnace

Abstract

The invention discloses a system for recycling waste heat of a pyrolyzing furnace. The system comprises an external waste heat recovery device, a flue gas waste heat recovery device and a control system, wherein the external waste heat recovery device comprises a cylinder which is of a hollow structure, a water outlet tube which communicates with the inner cavity of the cylinder is arranged at one end of the cylinder, and a water outlet tube which communicates with the inner cavity of the cylinder is arranged at the lower end of the other end of the cylinder; the bottom of the cylinder is provided with a supporting frame, a plurality of receding holes and a plurality of mounting holes, and the mounting holes are provided with burner assemblies; a front end plate and a rear end plate are arranged at the two ends of the cylinder respectively, a hole allowing a feeding mechanism to be located is formed in the center of the front end plate, a hole allowing a discharging mechanism to be located is formed in the center of the rear end plate, and the upper portion of the rear end plate communicates with the interior of the discharging mechanism through a pipeline; the water outlet tube is connected with a hot water device; the flue gas waste heat recovery device is arranged on one side of the discharging mechanism and communicates with the interior of the discharging mechanism, the control device comprises a PLC and a sensor. The waste heat utilization efficiency is high, environmental thermal pollution is reduced, and additional income can be created.

Description

technical field [0001] The invention belongs to the field of pyrolysis and carbonization equipment, and in particular relates to a system for recovering waste heat of a pyrolysis furnace. Background technique [0002] In the process of recycling biomass, the biomass is generally sent to the pyrolysis furnace for pyrolysis. Usually, the rotary kiln is used for heating and then the subsequent classification, purification, collection and other processes are carried out. The rotary kiln Generally, external heating is used, and the heat generated during the heating process is transferred to the air, which not only causes waste of energy, but also increases the temperature of the surrounding environment and causes pollution. Most of the existing waste heat recovery devices recover the heat generated in the furnace. Waste heat, as described in the invention patent CN200410155526.3, the method and equipment for utilizing the waste heat of the flue gas in the rotary kiln is to recycl...

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Problems solved by technology

[0002] In the process of recycling biomass, the biomass is generally sent to the pyrolysis furnace for pyrolysis. Usually, the rotary kiln is used for heating and then the subsequent classification, purification, collection and other processes are carried out. The rotary kiln Generally, external heating is used, and the heat generated during the heating process is transferred to the air, which not only causes waste of energy, but also increases the temperature of the surrounding environment and causes pollution. Most of the existing waste heat recovery devices recover the heat generated in the furnace. Waste heat, as described in the invention patent CN200410155526.3, the method and equipment for utilizing the waste heat of the flue gas in the rotary kiln is to recycle the waste heat of the flue gas in the rotary kiln, and most of the other related equipment is to convert the pyrolysis gas into electrical energy or heat energy Transfer to the medium for utilization, the heat energy will have a large loss in the conversion process, and the heat outside the furnace cannot be recovered

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