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CN-122015063-A - Dual-circulation separated heat pipe waste heat boiler

CN122015063ACN 122015063 ACN122015063 ACN 122015063ACN-122015063-A

Abstract

The invention discloses a double-circulation separated heat pipe waste heat boiler, which relates to the technical field of waste heat boilers and comprises a boiler water tank, a first heat pipe heat transfer pipeline and a second heat pipe heat transfer pipeline, wherein the first heat pipe heat transfer pipeline and the second heat pipe heat transfer pipeline are arranged in the boiler water tank, the first heat pipe heat transfer pipeline comprises a first smoke pipe and a first heat pipe, the first smoke pipe is a straight pipe, two ends of the first smoke pipe respectively penetrate through the side wall of the boiler water tank and are respectively used for smoke entering and discharging, the number of the first heat pipes is a plurality, the first heat pipes are detachably connected to the outer side of the first smoke pipe, the adjacent first heat pipes are communicated with each other, the second heat pipe heat transfer pipeline comprises a second smoke pipe and a second heat pipe, the two ends of the second smoke pipe respectively penetrate through the side wall of the boiler water tank and are respectively used for smoke entering and discharging, the second heat pipe is sleeved on the outer side of the second smoke pipe, and the adjacent second heat pipes are communicated with each other. The invention can adaptively distribute the flue gas flow and meet higher heat exchange efficiency.

Inventors

  • MAO JIAN

Assignees

  • 金华市智能制造研究院

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. The double-circulation separated heat pipe waste heat boiler comprises a boiler water tank (1) and is characterized by further comprising a first heat pipe heat transfer pipeline (2) and a second heat pipe heat transfer pipeline (3) which are arranged in the boiler water tank (1); The first heat pipe heat transfer pipeline (2) comprises a first smoke pipe (21) and first heat pipes (22), wherein the first smoke pipe (21) is a straight pipe, two ends of the first smoke pipe (21) respectively penetrate through the side wall of the boiler water tank (1) and are respectively used for enabling smoke to enter and be discharged, the number of the first heat pipes (22) is multiple, the first heat pipes (22) are detachably connected to the outer side of the first smoke pipe (21), the adjacent first heat pipes (22) are communicated with each other, and heat conducting liquid is introduced into the first heat pipes (22); The second heat pipe heat transfer pipeline (3) comprises a second smoke pipe (31) and second heat pipes (32), wherein the second smoke pipe (31) is a spiral pipe, two ends of the second smoke pipe (31) respectively penetrate through the side wall of the boiler water tank (1) and are respectively used for entering and discharging smoke, the second heat pipes (32) are sleeved on the outer sides of the second smoke pipe (31), the adjacent second heat pipes (32) are communicated with each other, and heat conducting liquid is introduced into the second heat pipes (32).
  2. 2. The dual-circulation separated heat pipe waste heat boiler according to claim 1, wherein the air inlet of the first smoke pipe (21) and the air inlet of the second smoke pipe (31) are connected in parallel and are communicated with the main air inlet pipe (4), and flow control valves are arranged on the air inlet of the first smoke pipe (21) and the air inlet of the second smoke pipe (31).
  3. 3. The dual cycle split type heat pipe waste heat boiler according to claim 1, wherein the outer side wall of the first flue pipe (21) is provided with a flue pipe fin (211) protruding radially, and the inner wall of the first heat pipe (22) is provided with a heat pipe slot (221) inserted with the flue pipe fin (211).
  4. 4. The dual cycle split type heat pipe waste heat boiler as claimed in claim 1, wherein the outer side walls of the first heat pipe (22) and the second heat pipe (32) have a first heat pipe fin (222) and a second heat pipe fin (321), respectively.
  5. 5. The dual cycle split heat pipe waste heat boiler as claimed in claim 1, wherein a cannula (223) and a socket (224) are arranged between the ends of the adjacent first heat pipes (22) and between the ends of the adjacent second heat pipes (32), and the insertion joint of the cannula (223) and the socket (224) is provided with an insertion seal.
  6. 6. A dual cycle split heat pipe waste heat boiler according to claim 1, wherein each first heat pipe (22) is composed of two semi-cylindrical shells (225) in butt joint, the semi-cylindrical shells (225) each having a cavity for introducing a heat conducting liquid.
  7. 7. The dual cycle split type heat pipe waste heat boiler as claimed in claim 6, wherein an insertion part (226) is provided between the outer side walls of the two semi-cylindrical shells (225) of each first heat pipe (22), and the insertion parts (226) are fastened and connected through bolts (2263).
  8. 8. A dual cycle split type heat pipe waste heat boiler according to claim 1, wherein both ends of the second flue pipe (31) are provided with flanges (311) for connection.
  9. 9. A dual cycle split heat pipe waste heat boiler according to claim 1, characterized in that the first and second smoke pipes (21, 31) are each arranged in a serpentine structure within the boiler water tank (1).
  10. 10. The dual cycle split type heat pipe waste heat boiler as claimed in claim 1, wherein two ends of a series pipeline formed by a plurality of first heat pipes (22) and a plurality of second heat pipes (32) respectively penetrate through the side wall of the boiler water tank (1), one end is a heat conducting liquid inlet, and the other end is a heat conducting liquid outlet.

Description

Dual-circulation separated heat pipe waste heat boiler Technical Field The invention relates to the technical field of waste heat boilers, in particular to a double-circulation separated heat pipe waste heat boiler. Background A waste heat boiler is a device for generating steam or hot water by using waste heat in high-temperature flue gas discharged in an industrial process. The technology can not only improve the utilization efficiency of energy sources, but also reduce environmental pollution. The waste heat boiler is mainly applied to the recovery of the waste heat of the flue gas in the industrial process, and utilizes the waste heat of the high-temperature flue gas, the waste heat of chemical reaction, the waste heat of combustible gas, the waste heat of Wen Chanpin and the like to produce steam or hot water through a gas-water/steam heat exchanger for the process flow or heat supply of entering a pipe network. The design of the waste heat boiler requires that the equipment has high-efficiency energy recovery and utilization efficiency, the thermal efficiency is not lower than 80 percent, and the waste gas emission of the equipment meets the national environmental protection standard and limit value requirements. The glass fiber kiln can generate a large amount of high-temperature smoke in the production process, and the smoke contains a large amount of heat. By using the heat pipe waste heat boiler, waste heat in the flue gas can be recovered to generate low-pressure saturated steam which is used for heating and atomizing heavy oil, preserving heat of pipelines, living heating and the like. For the flue gas with larger flue gas discharge amount and higher temperature, the high-pressure steam (3.5 MPa) can be generated by a heat pipe waste heat boiler and used for steam turbine power generation, or the machinery such as a turbine air compressor, a fan, a water pump and the like can be directly driven. In the design process of the waste heat boiler, the combination form of the smoke tube and the heat tube has great influence on the convenience of installation and the heat efficiency transmission. The prior art CN 213453704U discloses a heat pipe type waste heat boiler, high-temperature flue gas flows in a gas transmission pipe to heat conduction oil in a heat conduction pipe, and the heated conduction oil conducts heat into the boiler to finish waste heat utilization. However, the flue gas exchanges heat in a single-form conveying pipeline, so that the maximum heat exchange effect cannot be exerted according to the flow of the flue gas, and the efficiency is reduced by simply adjusting the flow of the flue gas. Therefore, how to provide a heat pipe waste heat boiler with higher use efficiency and thermal efficiency is a problem that needs to be solved by those skilled in the art. Disclosure of Invention In view of the above, the present invention provides a dual-cycle separated heat pipe waste heat boiler, which aims to solve the above technical problems. In order to achieve the above purpose, the present invention adopts the following technical scheme: The double-circulation separated heat pipe waste heat boiler comprises a boiler water tank, and further comprises a first heat pipe heat transfer pipeline and a second heat pipe heat transfer pipeline which are arranged in the boiler water tank; The heat transfer pipeline of the first heat pipe comprises a first smoke pipe and first heat pipes, wherein the first smoke pipe is a straight pipe, two ends of the first smoke pipe respectively penetrate through the side wall of the boiler water tank and are respectively used for entering and discharging smoke; The second heat pipe heat transfer pipeline comprises a second smoke pipe and a second heat pipe, wherein the second smoke pipe is a spiral pipe, two ends of the second smoke pipe respectively penetrate through the side wall of the boiler water tank and are respectively used for smoke entering and discharging, the second heat pipe is sleeved on the outer side of the second smoke pipe, adjacent second heat pipes are communicated with each other, and heat conducting liquid is introduced into the second heat pipe. Through the technical scheme, the invention provides a double-circulation boiler form combining a first heat pipe heat transfer pipeline and a second heat pipe heat transfer pipeline, the two pipelines are arranged separately and do not interfere with each other, the adaptive switching or flow feeding can be carried out according to the flow of the flue gas feeding, the flow speed of the flue gas in a straight pipe form of a first smoke pipe is high, the flow speed of the flue gas in a spiral pipe form of a second smoke pipe is low, the flow of the flue gas can be distributed adaptively, and higher heat exchange efficiency is met. Preferably, in the above dual-circulation separated heat pipe waste heat boiler, the air inlet of the first smoke pipe and the air inlet of the second smoke pipe are co