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CN-121252509-B - Cooling device of heating furnace

CN121252509BCN 121252509 BCN121252509 BCN 121252509BCN-121252509-B

Abstract

The invention relates to the technical field of flue gas heat recovery equipment, in particular to a heating furnace cooling device which comprises a cavity, a motor, a liquid receiving hopper, a mixing cavity, a movable cavity and a heat insulation cavity, wherein a spray pipe and a flue are respectively arranged at the upper end and the lower end of the cavity, a liquid discharge pipe is arranged at the bottom of the cavity, the motor is fixedly arranged at the top end of the cavity, a first fan blade is arranged on a motor rotating shaft, a second fan blade and a stirring blade are arranged in the liquid receiving hopper, the mixing cavity is arranged at the top of the cavity, the two ends of the movable cavity are respectively matched with the mixing cavity and a connecting pipe, the heat insulation cavity surrounds the side surface of the cavity, a medium layer is not arranged between the water-mist heat conducting medium and the flue gas in direct contact, the contact area is large, the heat exchange speed is high, the cooling of the flue gas can be rapidly completed, the position of the movable cavity and the rotating speed of the stirring blade can be adaptively adjusted according to the flue gas feeding amount, and the heat exchange and the cooling process can be fully completed by ensuring the flue gas and the heat conducting medium with proper amount.

Inventors

  • LIU PEIFENG
  • Xiao Lianfa
  • WEI YILONG

Assignees

  • 福建省圣新环保股份有限公司

Dates

Publication Date
20260508
Application Date
20251208

Claims (6)

  1. 1. A heating furnace cooling apparatus, comprising: the heat-conducting device comprises a cavity (100), wherein a spray pipe (101) for inputting a heat-conducting medium and a flue (102) for inputting flue gas are respectively arranged at the upper end and the lower end of the cavity (100), and a liquid discharge pipe (103) is arranged at the bottom of the cavity (100); the motor (200) is fixedly arranged at the top end of the cavity (100), and a first fan blade (201) is arranged on a rotating shaft of the motor (200); The liquid receiving hopper (300) is in an inverted cone shape, a rotating shaft (301) forming a revolute pair with the liquid receiving hopper (300) is arranged in the liquid receiving hopper (300), second fan blades (302) and stirring blades (303) are respectively arranged at the upper end and the lower end of the rotating shaft (301), an atomizing nozzle (104) is arranged at the tail end of the spray pipe (101), and the orthographic projection of the spray pipe (101) on the liquid receiving hopper (300) is surrounded by the liquid receiving hopper (300); a mixing chamber (400), the mixing chamber (400) being arranged on top of the chamber body (100); a movable cavity (500), wherein one end of the movable cavity (500) is positioned in the mixing cavity (400) and forms a moving pair with the mixing cavity (400), a sleeve (501) is formed at the other end of the movable cavity (500), a connecting pipe (502) forming the moving pair with the sleeve (501) is arranged in the sleeve (501), the moving direction of the connecting pipe (502) is the same as that of the movable cavity (500), and a corrugated plate (503) is arranged in the movable cavity (500); The heat insulation cavity (600), the side of cavity (100) is encircled in heat insulation cavity (600), and heat insulation cavity (600) upper and lower both ends communicate with mixing cavity (400) bottom and cavity (100) bottom respectively.
  2. 2. The cooling device of the heating furnace of claim 1, further comprising a liquid receiving ring (700), wherein the liquid receiving ring (700) is arranged in the cavity (100) and circumferentially connected with the cavity (100), an inclined guide ring (701) is formed in the center of the liquid receiving ring (700), the guide ring (701) is matched with the bottom end of the liquid receiving hopper (300), and a channel (702) is formed in the cavity (100) and the heat insulation cavity (600) so that a heat conducting medium on the liquid receiving ring (700) can enter the heat insulation cavity (600) through the channel (702).
  3. 3. The cooling device for a heating furnace according to claim 1, wherein a third fan blade (504) is further provided in the movable chamber (500), and the third fan blade (504) is provided in the movable chamber (500) and is rotatable to form a revolute pair with the movable chamber (500).
  4. 4. A furnace cooling device according to any one of claims 1 to 3, wherein the flue (102) passes through the insulating chamber (600) such that the flue (102) is laterally surrounded by the insulating chamber (600).
  5. 5. A cooling apparatus for a heating furnace according to any one of claims 1 to 3, wherein the mixing chamber (400) is inclined upward.
  6. 6. A cooling device for a heating furnace according to claim 5, wherein the mixing chambers (400) are distributed at equal intervals around the liquid receiving hopper (300) on the side of the chamber body (100).

Description

Cooling device of heating furnace Technical Field The invention relates to the field of flue gas heat recovery equipment, in particular to a cooling device of a heating furnace. Background The heating furnace (Industrial Furnace) is characterized in that fuel combustion or electric energy is utilized to convert the fuel into heat, so that materials or workpieces are heated to the required temperature, the smoke discharged by the heating furnace still has extremely high temperature, and the direct discharge can lead to low heat utilization efficiency, so that the smoke waste heat needs to be recovered to realize energy conservation and cost reduction. The existing flue gas cooling and heat energy recovery technology is difficult to realize dynamic matching of heat conducting medium and flue gas inlet, uneven cooling, insufficient waste heat recovery or excessive medium consumption are easily caused when working conditions fluctuate, and secondly, uniformity and turbulence degree of mixing of the heat conducting medium and the flue gas are insufficient, heat exchange efficiency is insufficient, uneven temperature distribution is easily caused, and heat generation and thermal stress easily cause deformation and damage of components. Therefore, how to design a heating furnace flue gas cooling device which can realize efficient and uniform mixing of flue gas and cooling medium, can adapt to working condition changes and deeply recover sensible heat and latent heat of the flue gas, and has compact structure and stable operation is a technical problem to be solved in the field. Disclosure of Invention The invention aims to provide a cooling device of a heating furnace, which solves the problems in the background art. The invention provides a technical scheme that the heat-conducting device comprises a cavity, a motor, a liquid receiving hopper, a mixing cavity, a movable cavity and a heat insulation cavity, wherein a spray pipe for inputting heat-conducting medium and a flue for inputting flue gas are respectively arranged at the upper end and the lower end of the cavity, the spray pipe and the flue are respectively communicated with a pipeline for communicating heat-conducting medium with the outside and a pipeline for communicating a smoke outlet of a heating furnace, the heat-conducting medium can be heat-conducting oil or water, a liquid discharge pipe is arranged at the bottom of the cavity and is used for discharging the heat-conducting medium for completing heat exchange, the motor is fixedly arranged at the top end of the cavity, a first fan blade is arranged on a rotating shaft of the motor, and the first fan blade is driven by the motor to rapidly rotate so that the water mist of the heat-conducting medium is fully mixed with the flue gas, and the rapid cooling of the flue gas is realized; The liquid receiving hopper is in an inverted cone shape, the liquid receiving hopper is used for receiving redundant heat-conducting medium dropped by the spray pipe, a rotating shaft forming a revolute pair with the liquid receiving hopper is arranged in the liquid receiving hopper, the upper end and the lower end of the rotating shaft are respectively provided with a second fan blade and a stirring blade, the second fan blade can be driven by air flow caused by the first fan blade, and the stirring blades can also synchronously rotate when the second fan blade rotates due to an integrated structure of the second fan blade and the stirring blade, so that the heat-conducting medium in the liquid receiving hopper is driven to rapidly rotate; The mixing cavity is arranged at the top of the cavity and provides a place for fully mixing smoke and heat conducting medium water mist and exchanging heat; One end of the movable cavity is positioned in the mixing cavity and forms a moving pair with the mixing cavity, a sleeve is formed at the other end of the movable cavity, a connecting pipe which forms the moving pair with the sleeve is arranged in the sleeve, the connecting pipe is communicated with an external pipeline and used for transferring cooled smoke, in the concrete implementation, silk screen foam removing gas can be arranged at the connecting pipe to reduce the throughput of water mist in the connecting pipe, the moving direction of the connecting pipe is the same as that of the movable cavity, a corrugated plate is arranged in the movable cavity, the corrugated plate is a corrugated plate-shaped structure in the prior art, the purpose of the arrangement is to enable heat conducting medium liquid drops and the smoke to be fully mixed to complete heat exchange, the corrugated plate belongs to the technical field, and therefore, the explanation of the concrete shape and the material of the corrugated plate is omitted; the heat insulation cavity surrounds the side surface of the cavity, the upper end and the lower end of the heat insulation cavity are respectively communicated with the bottom of the mixing cavity and