Intelligent phase-change heat system applied to petrochemical heating furnace
A phase change heat and heating furnace technology, applied in the field of flue gas waste heat recovery, can solve the problems of uneven heating of pipelines, water hammer, vibration, easy damage, etc. economic effect
Active Publication Date: 2019-08-20
盘锦阳光节能环保科技有限公司
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Problems solved by technology
Patents CN201010527948.4, CN201210447265.7, CN201110177653.3 all disclose the application of the phase-change heat system of the gas-liquid heat exchanger. Stable, its structure is complex, at the same time, because the state of water is unstable when boiling in the heating tube, water hammer and vibration are prone to occur, and the pipeline is prone to damage due to uneven heating
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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0038] Embodiments of the present invention will be described below with reference to the accompanying drawings. see figure 1 , the first invention of the present invention lies in an intelligent phase-change heat system applied to petrochemical heating furnaces. The system includes an air preheater 1 and a flue for flue gas that passes through the air preheater 1 2 and the air duct 3 for entering the cold air after preheating, it is characterized in that the syst...
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The invention relates to an intelligent phase-change heat exchange system applied to a petrochemical heating furnace. The intelligent phase-change heat exchange system comprises an air preheater, a smoke channel which penetrates the air preheater and used for feeding smoke and an air channel which is used for feeding preheated cold air. The intelligent phase-change heat exchange system further comprises a gas-liquid heat exchanger, an air heat exchanger arranged on the upper section of the gas-liquid heat exchanger and a smoke heat exchanger arranged on the lower section of the gas-liquid heatexchanger. The tail of the smoke channel communicates with the smoke heat exchanger, and the front portion of the air channel communicates with the smoke heat exchanger. The lower portion of the gas-liquid heat exchanger is connected with a water inlet pipe, water flow in the water inlet pipe is controlled through an electric control valve, and the inner wall of the gas-liquid heat exchanger is further provided with a temperature sensor. The temperature of the air preheater metal wall of the intelligent phase-change heat exchanger system is kept at the acid dew point or above, and smoke low-temperature waste heat is greatly recovered while low-temperature dew formation and corrosion are avoided.
Description
technical field [0001] The invention relates to the technical field of flue gas waste heat recovery, in particular to an intelligent phase-change heat system applied to petrochemical heating furnaces. Background technique [0002] Petrochemical heating furnace is one of the main equipment of oil refining and petrochemical production equipment, and it is a large energy-consuming household for oil refining and petrochemical production equipment, and it is also a major source of pollution to the environment. Fuel oil or gas fuel used in petrochemical heating furnaces contains sulfur, and sulfur oxides are usually produced during combustion. When sulfur oxides combine with water vapor, sulfuric acid vapor is formed. When the temperature of the metal wall on the heating surface at the tail of the petrochemical heating furnace is lower than the condensation point of sulfuric acid vapor (called acid dew point), liquid sulfuric acid (called condensation) will form on its surface. F...
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IPC IPC(8): F23L15/04F23J15/06F23J15/00F28D15/02F28D15/06
CPCF23J15/006F23J15/06F23L15/045F28D15/02F28D15/06Y02E20/34
Inventor 王君
Owner 盘锦阳光节能环保科技有限公司