Energy conservation and emission reduction in atmospheric and vacuum distillation
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As a primary processing unit in refineries, the atmospheric and vacuum distillation unit typically consumes 10 kilograms of standard oil per ton of crude oil, with losses ranging from over 0.1%. Energy conservation and emission reduction are of great significance; experienced sailors are invited to actively participate in the discussion on how to achieve these goals
Just trying to stimulate some discussion. (1) Make full use of the waste heat from the furnace flue gas and operate the air preheater properly. (2) Close the viewing ports in a timely manner, adjust the air dampers properly, control the oxygen content in the flue gas accurately, and minimize the entry of cold air. (3) Adjust and optimize the heat exchange process to make full use of the heat from the material flow, thereby increasing the temperature entering the furnace. (4) Make good use of the constant overhead and reduced overhead non-condensable gases to save fuel and reduce environmental pollution. (5) Variable frequency technology is used to achieve energy-saving control of high-power motors; practical experience has shown that using variable frequency for the bottom pump of the vacuum distillation tower can **reduce the maintenance needs for the equipment in the residue oil system. (6) Use a reinforcing distillant to increase liquid yield. (7) Steam drainage is handled using traps, while pump-driven drainage is collected and treated centrally; recycled water is used for water injection in the atmospheric and vacuum distillation columns as well as in the electrodehydrator.
Fuel consumption in the heating furnace constitutes a major part of the overall specific consumption in atmospheric and vacuum distillation units. However, the potential for improving the efficiency of these heating furnaces is relatively limited. Could any experts provide some guidance on how to save fuel?
1. The problem of using overpowered machinery for tasks that require less power: In some cases, pumps are overpowered for the tasks they need to perform; this issue can be resolved by modifying the impeller or by installing variable frequency drives.
2. Insulation issues: It is necessary to check whether the insulation on high-temperature pipelines is damaged; if so, the insulation should be replaced.
3. Heat tracing issues: Steam-based heat tracing should be replaced with hot water-based heat tracing, depending on the actual conditions.
4. Pump cooling water issues: The amount of water used for cooling pumps should be adjusted accordingly, based on the actual conditions at the site.
5. Heating furnace issues: Contact manufacturers of new-type burners to replace the existing burners in the heating furnace with more efficient and energy-saving ones
2. Insulation issues: It is necessary to check whether the insulation on high-temperature pipelines is damaged; if so, the insulation should be replaced.
3. Heat tracing issues: Steam-based heat tracing should be replaced with hot water-based heat tracing, depending on the actual conditions.
4. Pump cooling water issues: The amount of water used for cooling pumps should be adjusted accordingly, based on the actual conditions at the site.
5. Heating furnace issues: Contact manufacturers of new-type burners to replace the existing burners in the heating furnace with more efficient and energy-saving ones