Crude oil is normally stored in tanks, from where it is passed through Columns, i.e Crude Distillation Unit (CDU) and Vacuum Distillation Unit (VDU), Fluid Catalytic Cracking Unit (FCCU), Hydrotreater Catalytic Reforming Unit (HCU) to get end product.
During maintenance in columns,welding, fabrication,riveting job, strip lining, nozzle replacement, trays replacement are carried out. As a result, the air inside the column is hazardous with presence of toxic gases/ fumes and insufficient oxygen.
The temperature & Relative Humidity inside the column increases to high levels (48º – 50ºC) because of welding work & presence of large amount of workers (100-200) at a particular time.
Also, oxygen level decreases drastically & presence of toxic fumes makes it impossible for workers to carry out their work continuously. Frequent interruptions & breaks takes it toll on the overall efficiency. Reduced effeciency further results to delay in completion of the job.
The humidity and the temperature inside the column should be maintained at below 60% RH and temperature between 25º – 26ºC.
To maintain the above conditions, TDS provides customized dehumidification and temperature control solutions. Our package includes dehumidifiers, condensing units, blowers & ducts backed by technical manpower to maintain the required RH and temperatures inside the column. Desiccant based dehumidifiers adsorb the excess moisture in the air and maintain RH at below 60%.At the same time the condensing units help in maintaining temperature between 25º-26ºC.
TDS services helps in maintaining quality air and also achieve corrosion control.