Cylindrical tube type heating furnace capable of being assembled

Abstract

The invention relates to a cylindrical tube type heating furnace capable of being assembled, comprising a furnace shell, a furnace tube and a burner. The furnace tube is arranged in the furnace shell, the burner is also arranged in the furnace shell, wherein the furnace shell is composed of at least two furnace shell modules which are assembled and connected. As the heating furnace of the invention is provided with the furnace shell modules which can be assembled and connected and are applied to furnace shell, so that assembly and welding of the parts of the furnace shells can be carried out in a workshop of a manufacturing factory and then the furnace shells can be transported to the construction site to perform modularized 'block building' type construction. The mode in which the furnace shell modules are assembled to form the furnace shell changes the traditional construction mode in which a tubular heater is assembled and welded on site at the construction site, avoids the mess that various parts are scattered at the construction site, facilitates construction of large tubular heaters, leads to industrial application of the gradual implementation of modularized construction of industrial furnaces and has the characteristics of simple assemblage, low construction cost, short construction period and convenient overhauling.

Description

technical field [0001] The invention relates to heat exchange equipment technology, in particular to an assembleable circular tubular heating furnace. It can be used in petroleum refining and chemical industry, coal chemical industry, chemical fertilizer, air conditioner, air cooling, boiler, electric power facilities and other equipment industries to heat exchange equipment through medium heating or cooling, especially suitable for flue gas heat exchange of various chemical and fertilizer industrial furnaces equipment. Background technique [0002] Industrial furnaces are key equipment in the common production process in petrochemical plants. For example, tubular heating furnaces, reforming furnaces, and cracking furnaces for oil refining and petrochemical plants; high-temperature heating and high-temperature reaction gasifiers using coal as raw materials or primary reforming furnaces and secondary reforming furnaces using gas as raw materials for ammonia synthesis plants....

AI Technical Summary

Problems solved by technology

[0006] However, the construction method of the above-mentioned traditional integrated tubular heating furnace requires a large number of welding constructions on site, and the penetration of the furnace tube, the welding with the elbow, the radiographic detection of the weld, and the reflection of the weld defect Repairs, strict painting on the surface of the furnace wall and other processes require open-air and high-altitude construction on site. This kind of open-air high-altitude construction brings a lot of inconvenience to installation and construction, which is far from the HSE policy of modern engineering management.

Moreover, the wear-resistant and heat-insulating lining of the furnace wall is susceptible to weather, deformation, cracking, loosening, or rain failure

Therefore, this kind of open-air high-altitude construction and the inconvenience of various inspections are likely to cause the construction period to be affected by bad weather, the construction quality is difficult to guarantee, and there are hidden dangers in production safety.

[0007] With the development of social economy, the production scale of various chemical plants is increasing, and the volume of tubular heating furnaces is becoming larger and larger. For the design and construction of tubular heating furnaces with flammable and explosive media, its towering structure The requirements for the strength of anti-wind vibration and seismic load are getting higher and higher, and many chemical plants are located in coastal areas with strong typhoons, which makes the investment cost rise significantly, which has become a noteworthy technical and economic issue.

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