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Gap type mosquito-repellent incense tube heat-conducting oil boiler

A heat-conducting oil boiler and slot-type technology are applied in the field of slot-type mosquito coil heat-conducting oil boilers, which can solve the problems of difficulty in realizing nitrogen oxide emission, large furnace space, etc., achieving easy large-scale processing, production and assembly, reducing steel consumption and Occupancy area, the effect of optimizing the heat transfer oil process

Active Publication Date: 2022-03-01
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing low-nitrogen combustion technologies for heat-conducting oil boilers are flue gas recirculation or flue gas internal circulation technologies, which require a large furnace space. When the heat-conducting oil boiler is compact in structure, it is difficult to achieve nitrogen oxide emissions below 30mg / m 3 environmental goals

Method used

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  • Gap type mosquito-repellent incense tube heat-conducting oil boiler
  • Gap type mosquito-repellent incense tube heat-conducting oil boiler
  • Gap type mosquito-repellent incense tube heat-conducting oil boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1, such as Figure 1a , 1b, as shown in 1c, a slot-type mosquito-repellent incense tubular heat-conducting oil boiler includes a burner, an oil cooling coil wall 2, a mosquito-repellent-repellent-shaped radiant tube 3, a mosquito-repellent-repellent-shaped slot-type convection tube 4, an outer shell plate 5, an air preheater 6, a preheater Mixer 7, induced draft fan 8, oil supply system, various valve groups and controllers; the inlet of the burner is connected to the outlet of the pre-mixer 7, and the burner, mosquito-repellent-repellent-repellent-shaped radiant pipe 3 and mosquito-repellent-repellent-repellent-repellent-repellent-repellent slit-type convection pipe 4 are arranged on The inner side of the oil cooling coil wall 2; the space surrounded by the burner, the oil cooling coil wall 2 and the mosquito-repellent incense radiant tube 3 is the furnace; The tube 3 is connected with the mosquito-repellent-repellent-shaped slit-type convection pipe 4; the oil...

Embodiment 2

[0036] Example 2, such as figure 2 As shown, on the basis of Example 1, the slot-type mosquito coil tubular oil-cooled combustion head 1 includes a premixed gas distribution chamber 11, an equalizing orifice plate 12, a slot-type oil-cooled mosquito coil tube 13, a combustion head heat transfer oil inlet 14, a combustion Head heat conduction oil outlet 15, central windshield disk, ignition needle / gun and fire detection needle; mixed gas distribution chamber 11 is connected with pre-mixer 7, and equalizing orifice plate 12 is located in slot type oil-cooled mosquito coil tube 13 and mixed gas distribution chamber 11 between; the central windshield is arranged at the center of the flow equalizing orifice 12, and the slit-type oil-cooled mosquito-repellent coil 13 adopts a single-layer mosquito-repellent coil whose cross-section is oblong, and the rectangular long side or oblong of the adjacent mosquito-repellent coil The long side of the shape forms a 0.1~4mm wide slit channel,...

Embodiment 3

[0038] Example 3, such as image 3 As shown, on the basis of Embodiment 1 or Embodiment 2, the mosquito-repellent coil-shaped radiant tube 3 adopts two layers of circular mosquito-repellent coil tubes 31, and the two-layer circular mosquito-repellent coil tubes 31 are arranged in a staggered arrangement; It is coiled in the center, the central inlet main pipe 32 is connected to the outlet of the mosquito-shaped slit-type convection pipe 4, the heat-conducting oil outlet of the circular mosquito-repellent pipe 31 near the furnace is connected to the oil-cooling coil pipe wall 2, and the other layer of circular mosquito-repellent pipe The heat transfer oil outlet of 31 is connected to the heat transfer oil inlet of the slit type mosquito coil tubular oil cold combustion head 1; The heat conduction oil enters the oil cooling coil tube wall 2, and the heat conduction oil of another layer of circular mosquito coil tubes 31 enters the slot type mosquito coil tubular oil cooling comb...

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Abstract

The slit type mosquito-repellent incense tubular heat conduction oil boiler comprises a shell plate, an air preheater and a premixer, and an oil-cooled burner, an oil-cooled coil pipe wall, a mosquito-repellent incense-shaped radiant tube and a mosquito-repellent incense-shaped slit type convection tube are arranged in the shell plate; the oil-cooled burner is connected with the premixer; the mosquito-repellent incense-shaped radiant tube is arranged above the mosquito-repellent incense-shaped slit-type convection tube and is communicated with the mosquito-repellent incense-shaped slit-type convection tube; the mosquito-repellent incense-shaped radiant tube is arranged on the inner side of the wall of the oil cooling coil; the shell plate is provided with a flue gas outlet which is communicated with the air preheater; an atomizing nozzle is arranged at an air side outlet of the air preheater and is connected with a water pipe; the mosquito-repellent incense-shaped slit-type convection tube utilizes the laminar flow enhanced heat transfer principle, and the smoke can be cooled to below 400 DEG C only by 0.5 m; the boiler efficiency is greatly improved; according to the heat-conducting oil boiler, low-nitrogen combustion and gap laminar flow enhanced efficient heat exchange are achieved at the same time, the structure is compact, and original emission of nitric oxide is reduced to 50 mg / m < 3 > under the condition that flue gas recirculation is not adopted.

Description

technical field [0001] The invention belongs to the technical field of gas-fired heat-conducting oil boilers, and in particular relates to a gap-type mosquito coil heat-conducting oil boiler. Background technique [0002] In recent years, the problem of smog persists, and environmental protection policies are increasingly tightened. Traditional coal-fired thermal oil boilers are gradually replaced by gas-fired thermal oil boilers, but there are still many problems with gas-fired thermal oil boilers. Traditional gas-fired heat-conducting oil boilers mostly adopt a coil structure, which can be divided into two-pass and three-pass structures according to the size of the capacity. The flue gas flows between the multi-layer coils, and the diameter of the coils is mostly above 76mm. The heat transfer coefficient of the round tube is usually 40W / m 2 ·Below K, the heat transfer coefficient is small. In order to control the difference between the exhaust gas end within 50℃, the requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H7/00F24H9/00F24H9/1836F22B1/22F22B37/12F23D14/02F23D14/62F23D14/66
CPCF24H7/005F24H9/0005F24H9/1836F23D14/02F23D14/66F23D14/62F22B1/22F22B37/12Y02E20/34
Inventor 邓世丰苏建平赵钦新周志飞邵怀爽朱永忠王云刚梁志远
Owner XI AN JIAOTONG UNIV