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Industrial chimneys

An architectural ventilation structure typically vertical, or as near as possible to vertical, made of masonry, clay or metal that isolates hot toxic exhaust gases or smoke produced by a boiler, stove, furnace, incinerator or fireplace from human living areas is called Chimney. The space inside a chimney is called the flue. Most chimneys consists of light platforms; stairs, electric light fittings (signal lights), lightning protection, clamping rings, combustion product filtration system etc. Chimneys are built adjacent to large industrial refineries, fossil fuel combustion facilities or part of buildings, steam locomotives and ships. They are complex building constructions operating in specific conditions and requiring particular attention on behalf of the organizations operating them.

Industrial Chimneys allow the emission of waste gases occurring in the production of heat in production facilities in accordance with nature and adjust the circulation rate of the gases according to the need. Chimneys are designed and constructed based on the geographical climatic conditions of the area where the plant is located, by determining the temperature and gas outputs generated by the product produced or processed by the plant.

Following chimney static analyses, earthquake impacts, wind loads that will affect the chimney and physical calculations and tests in accordance with occupational safety, the most appropriate installation parts and materials ( resistant to corrosion and high temperatures) must be selected. Main four types of industrial chimneys are ferroconcrete, brick, metal, chimneys built from composite materials commonly known as bimetal

Things to consider for stable and efficient operation of chimneys are;

  1. Accurate creation of chimney structural designs

  2. Chimney and ambient temperature is different

  3. Sealing the chimneys and being well insulated

  4. Chimney has to be suitable for the climate

  5. Installation of chimneys in connection systems

  6. Using the proper and durable materials for long life.

Things to consider when analyzing and designing the chimneys

  1. Air density inside the chimney and the atmosphere density

  2. What kind of system the gases will pass through

  3. The flue systems must be compatible with the filter systems as the exhaust gases must be released to certain standards

  4. The correct material and material usage

  5. Calculations

Universal Engineering Services has more than a decades experience in the pressure vessel design for clients in UAE, Oman, Qatar, Kuwait, Bahrain, Saudi Arabia, and many more countries all over the world. UES work to many ASME standards to design and validate pressure vessels, boiler, fittings and piping systems. We are also experts in Stress analysis of piping, structural design, ASME Joint review, Design of Storage tanks, code calculations, FEA/FEM, and spotless service on design management.

**The content of this article is taken from web open source. The blogs are intended only to give technical knowledge to young engineers. Any engineering calculators, technical equations, and write-ups are only for reference and educational purposes.

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