Category Archives: Fired Heaters

Fired Heaters.

Environmental emissions air dispersion calculation / air pollution from combustion

Suppose you want to estimate the combustion products from heaters, boilers, etc. Based on my experience, the environmental specialist doing the Gaussian distribution calculation needs the following needs the four pieces of information about the combustion equipment. Below, I list … Continue reading

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Cracked Gas from Vacuum Unit Heaters

Below, I list sources you can turn to when estimating the cracked gas generated from vacuum tower heaters. That way, you know the flowrate and composition of light-ends generated in the vacuum tower’s pre-heat furnace. Background: Vacuum Units are typically … Continue reading

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Posted in Fired Heaters, Oil, Natural Gas, Coal, Simulation & Thermodynamics | Tagged , , , , | Leave a comment

Estimate Air Pollution with Emissions Factors (AP 42)

The U.S. EPA can help you calculate "typical" air pollution from different emissions sources in the U.S. including fired heaters, refineries, agricultural, chemical and metallurgical industries, etc. Just check out this cool report, AP 42 Compilation of Air Pollutant Emission … Continue reading

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Consider Finned Tubes to Increase Surface Area

This post will introduce the practice of adding fins to shell-and-tube heat exchanger tubes to increase the surface area, and discuss when to consider it and when to avoid it. This is not a post about air coolers. Image of … Continue reading

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Posted in Fired Heaters, Heat Exchange | Tagged , , , , | 2 Comments

Controlling Equipment Articles by Walter Driedger

Want to design an equipment's control scheme, draw up the P&ID, determine what process variables to control and when, and understand why you're doing it? Check out this excellent set of articles: Controlling Equipment Articles by Walter Driedger In language … Continue reading

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Posted in Drawings and Diagrams, Drums, tanks and vessels, Fired Heaters, Fun Stuff, Instrumentation & Controls, Pumps/Piping/Hydraulics | Tagged , , , , , , , , | 2 Comments