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CN-224215339-U - Two combustion chambers and burning system

CN224215339UCN 224215339 UCN224215339 UCN 224215339UCN-224215339-U

Abstract

The utility model belongs to the technical field of hazardous waste treatment equipment, and discloses a secondary combustion chamber and an incineration system. The secondary combustion chamber comprises a cylinder body and a jet combustion furnace. The inside processing chamber that is formed with of barrel is provided with flue gas import and flue gas export on the barrel, and the flue gas of first combustion chamber output is supplied into processing chamber through the flue gas inlet, and the flue gas after the second combustion chamber is handled is discharged processing chamber through the flue gas export. The spraying combustion furnace is arranged at the flue gas inlet and is configured to mix and ignite air with the flue gas supplied by the flue gas inlet, and the spraying combustion furnace is also configured to spray the flue gas in the combustion into the processing cavity along a preset direction so as to prolong the movement path of the flue gas in the processing cavity. The flue gas inlet and the flue gas outlet are arranged along a first direction, and the preset direction is intersected with the first direction. According to the utility model, the air and the flue gas are directly mixed and ignited at the flue gas inlet through the jet burner, so that the air and the flue gas can be fully contacted from the source, harmful substances generated by incomplete combustion are reduced, and the harmless degree of hazardous waste treatment is improved.

Inventors

  • WU CHUNFENG
  • CHEN LIANGXIONG

Assignees

  • 太仓融朗再生资源有限公司

Dates

Publication Date
20260508
Application Date
20250612

Claims (10)

  1. 1. A secondary combustion chamber, characterized by comprising a cylinder (1) and a burner (2), wherein: A treatment cavity is formed in the cylinder body (1), a smoke inlet (11) and a smoke outlet (12) are formed in the cylinder body (1), smoke output by a combustion chamber is supplied into the treatment cavity through the smoke inlet (11), and the smoke treated by the secondary combustion chamber is discharged out of the treatment cavity through the smoke outlet (12); The spraying furnace (2) is arranged at the flue gas inlet (11), the spraying furnace (2) is configured to mix air with flue gas supplied by the flue gas inlet (11) and ignite the flue gas, and the spraying furnace (2) is further configured to spray the flue gas in combustion into the processing cavity along a preset direction so as to prolong the movement path of the flue gas in the processing cavity; the flue gas inlet (11) and the flue gas outlet (12) are arranged along a first direction, and the preset direction is intersected with the first direction.
  2. 2. A secondary combustion chamber according to claim 1, characterized in that the flue gas outlet (12) is arranged in the upper part of the cylinder (1) and the flue gas inlet (11) is arranged in the lower part of the cylinder (1).
  3. 3. A secondary combustion chamber according to claim 2, characterized in that the cylinder (1) is arranged cylindrically, the flue gas inlet (11) and the flue gas outlet (12) being located at different radial positions in the circumferential direction of the cylinder (1), respectively.
  4. 4. A secondary combustion chamber according to claim 1, characterized in that the burner (2) comprises a burner body (21), a fuel supply line (22) and an air supply line (23), wherein; The burner body (21) is arranged at the flue gas inlet (11), and the burner body (21) comprises a mixing cavity communicated with the flue gas inlet (11) so that flue gas is input into a processing cavity through the mixing cavity; the fuel supply line (22) communicates with the mixing chamber to input fuel into the mixing chamber; The air supply pipeline (23) is communicated with the mixing cavity so as to input air into the mixing cavity and push air, smoke and fuel to be mixed in the mixing cavity.
  5. 5. A secondary combustion chamber according to claim 1, characterized in that the inner wall of the cylinder (1) is covered with an insulating layer (3).
  6. 6. The secondary combustion chamber according to claim 5, wherein the cylinder (1) is made of carbon steel material, and the heat insulation layer (3) comprises aluminum silicate fiber cotton (31), heat insulation castable (32) and corundum castable (33) which are sequentially coated on the inner wall of the cylinder (1) from inside to outside.
  7. 7. A secondary combustion chamber according to claim 1, characterized in that it further comprises an exhaust chimney provided at the top of the cylinder (1), configured to bleed off the internal high pressure gas.
  8. 8. A secondary combustion chamber as claimed in claim 1, further comprising: A pressure detection member (4) disposed on the cylinder (1), the pressure detection member (4) being configured to detect a pressure in the processing chamber; The temperature detection piece (5) is arranged on the cylinder body (1), and the temperature detection piece (5) is used for detecting the temperature in the processing cavity.
  9. 9. A secondary combustion chamber according to claim 1, characterized in that it further comprises an access door (6) provided on the cylinder (1).
  10. 10. An incineration system, comprising a combustion chamber, a transfer line and a secondary combustion chamber according to any one of claims 1-9, wherein: The first combustion chamber is used for incinerating wastes, and flue gas output by the first combustion chamber is input into the second combustion chamber through the conveying pipeline so that the second combustion chamber continuously combusts unburned combustible gas.

Description

Two combustion chambers and burning system Technical Field The utility model relates to the technical field of hazardous waste treatment equipment, in particular to a secondary combustion chamber and an incineration system. Background In the field of hazardous waste treatment, the incineration method decomposes and converts harmful substances in waste at high temperature to realize reduction and harmless treatment, and the secondary combustion chamber is used as a core component of a hazardous waste incineration system and is responsible for secondary combustion of high-temperature flue gas exhausted by the primary combustion chamber, and the performance of the secondary combustion system is directly related to the hazardous waste incineration treatment effect and the environment-friendly index up to standard. Specifically, high-temperature flue gas generated by the primary combustion chamber enters the secondary combustion chamber under the action of the induced draft fan, and the secondary combustion chamber continuously combusts unburned combustible gas. However, the structural design and the operation mode of the existing secondary combustion chamber have defects, so that combustible components in the flue gas are difficult to fully mix with oxygen, the combustion process is insufficient, and a large number of harmful substances cannot be completely decomposed. In addition, the temperature control and heat retention effects of the secondary combustion chamber are poor, the decomposition efficiency of harmful components is affected, the energy consumption and the operation cost are increased, and the current strict environmental protection emission requirements and energy saving requirements are difficult to meet. Therefore, the above-described problems are to be solved. Disclosure of utility model The utility model aims to provide a secondary combustion chamber and an incineration system, which are used for reducing harmful substances generated by incomplete combustion and improving the harmless degree of hazardous waste treatment. To achieve the purpose, the utility model adopts the following technical scheme: a secondary combustion chamber comprising a barrel and a burner, wherein: A treatment cavity is formed in the cylinder body, a smoke inlet and a smoke outlet are formed in the cylinder body, smoke output by a first combustion chamber is supplied into the treatment cavity through the smoke inlet, and smoke treated by a second combustion chamber is discharged out of the treatment cavity through the smoke outlet; The gas injection furnace is arranged at the gas inlet and is configured to mix and ignite air with gas supplied by the gas inlet, and the gas injection furnace is further configured to inject the burned gas into the treatment cavity along a preset direction so as to prolong the movement path of the gas in the treatment cavity; The flue gas inlet and the flue gas outlet are arranged along a first direction, and the preset direction is intersected with the first direction. Preferably, the flue gas outlet is arranged at the upper part of the cylinder, and the flue gas inlet is arranged at the lower part of the cylinder. Preferably, the cylinder is in a cylindrical shape, and the flue gas inlet and the flue gas outlet are respectively positioned at different radial positions in the circumferential direction of the cylinder. Preferably, the burner comprises a burner body, a fuel supply line and an air supply line, wherein; The burner body is arranged at the flue gas inlet and comprises a mixing cavity communicated with the flue gas inlet so that flue gas is input into the treatment cavity through the mixing cavity; the fuel supply pipeline is communicated with the mixing cavity so as to input fuel into the mixing cavity; the air supply pipeline is communicated with the mixing cavity so as to input air into the mixing cavity and push air, smoke and fuel to be mixed in the mixing cavity. Preferably, the inner wall of the cylinder is covered with an insulating layer. Preferably, the cylinder is made of carbon steel material, and the heat insulation layer comprises aluminum silicate fiber cotton, heat insulation castable and corundum castable which are sequentially coated on the inner wall of the cylinder from inside to outside. Preferably, the secondary combustion chamber further comprises an exhaust stack disposed at the top of the barrel, the exhaust stack configured to vent the internal high pressure gas. Preferably, the secondary combustion chamber further comprises: the pressure detection piece is arranged on the cylinder body and is used for detecting the pressure in the processing cavity; the temperature detection piece is arranged on the cylinder body and is used for detecting the temperature in the processing cavity. Preferably, the secondary combustion chamber further comprises an access door arranged on the cylinder. An incineration system comprises a combustion chamber, a conveying pip