6 industrial uses of heat pipe steam generator

1. Building materials construction

For cement, ceramics and other building materials industries, heat exchangers are used to recover the waste heat of kiln flue gas to generate hot air or hot water. Such as heat pipe hot air furnace or heat pipe. The tube-tube combined hot air furnace can produce hot air below 500 ℃ to dry clean materials. The heat pipe air preheater in the construction industry can be used for heat exchange between outdoor fresh air and indoor turbid air. In the centralized air conditioning refrigeration unit, the waste heat from the exhaust of the heat pipe heat exchanger is used to generate low pressure steam for the air conditioning refrigeration unit.

Second, the power industry

The heat pipe heat exchanger can be used as the heating surface of the tail of various boilers. For example, the heat pipe air preheater can replace the traditional rotary air preheater and the tube air preheater, increase the wall temperature of the heated surface, avoid dew point corrosion, increase the furnace inlet air temperature and the furnace oxygen content, and extend the boiler operating cycle. To reduce air leakage.

1. Heat pipe air preheater at the rear of industrial boiler. Heat pipe economizer or finned tube economizer.

2. The heat pipe air preheater at the rear of the power plant boiler can be divided into the following uses:

(1) The hot flue gas discharged from the boiler is used to heat the cold flue gas after desulfurization, that is, the desulfurized GGH of the power station

(2) The entire low-temperature air preheater is a heat pipe structure;

(3) Install a heat pipe air preheater in front of the air inlet of the original low temperature air preheater to further reduce the boiler exhaust temperature, reduce exhaust heat loss and improve boiler efficiency

3. The rear of the gas boiler convection section.

4. The protection of power transmission lines, power transmission towers and substations in high altitude and cold regions all need heat pipes to protect their foundations from excessive expansion or thawing due to seasonal changes.

  3. Petrochemical

1. Convection coil of ethylene cracking furnace, convection coil of heating furnace of oil refinery.

2. The regenerated flue gas from the catalytic device of the refinery and the waste heat recovery of various internal and external heat extractors can generate medium-pressure steam and be used in the power system.

3. Atmospheric pressure furnace, vacuum furnace, atmospheric and vacuum two-in-one furnace and hydrogenation furnace of oil refinery. Viscosity reduction furnaces, reforming furnaces, etc., use the heat pipe air preheater to recover the waste heat of the furnace flue gas to heat the air, so as to increase the air temperature of the heating furnace.

 

 

Fourth, traffic engineering

In recent years, the heat pipe steam generator has been greatly expanded in traffic engineering, solving many problems that have not been solved in the past decades, such as the protection of roads, bridges, and oil pipelines in high and cold areas at high altitudes. Heat pipe components have been around since.

 5. Metallurgical industry

1. The heat pipe steam generator or finned tube steam generator is used to recover the sensible heat of the sintered ore transported by various belt coolers and ring coolers to generate steam.

2. The ironmaking plant uses blast furnace flue gas to preheat the single preheated air or coal gas or double preheated integral or separate heat pipe heat exchangers to recover the waste heat of the hot blast furnace flue gas, save gas, and increase the heating rate of the hot blast furnace. The furnace top temperature and supply air temperature reduce the iron-making coke ratio and save coke.

6. Oil and gas industry

The pipelines for oil or other fluids in high and cold regions will also change due to seasonal changes, resulting in the deformation of the pipeline foundation due to seasonal changes. Such changes will damage the pipelines and cause major accidents. At the same time, the friction between the fluid in the pipeline and the pipeline will also generate a lot of heat. The heat accumulation is very objective. It will cause devastating damage to the environment in the past. When the United States was building the Alaska oil pipeline, in order to protect the permafrost layer there, A large number of heat pipes were set up along the pipeline to prevent the pipeline heat from spreading underground.

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