Reduction of Costs in the Oil Industry
Cost reduction is a key task for the management of enterprises involved in oil refining. An important aspect is the reduction of the production cost of raw material processing. To achieve this goal, it is necessary to use frequency converters. NPF KRUG has significant experience in the use of frequency converters, which has been accumulated over many years. The primary experience was gained through the implementation of frequency converters as part of automated process control systems.
Use of Frequency Converters
The following frequency converters are used to manage business processes:
- Air coolers
- Heavy oil transfer pumps
- Diesel circulating irrigation supply pumps
Management of frequency converters is carried out by a special system using a standard current signal. The technological process involves the active use of air coolers.
Problems and Solutions
Certain problems may arise during operation:
- Possible temperature fluctuations after the use of air coolers
- Pressure changes in columns, which depend on the time of day and the ambient temperature
- The need for manual redistribution of flows in the winter period
These problems can be solved by adjusting the frequency of fan operation, which helps avoid negative impacts on the functioning of air coolers that depend on temperature fluctuations. Changes have also become noticeable in electricity consumption:
- In summer, electricity consumption reached its maximum level during the day;
- During the same period of the year, electricity consumption decreased by 15% at night;
- In winter, this figure decreased by 15-25%.
Results of Implementing Frequency Converters
Two types of control schemes for frequency converters were used for pump operation. The use of frequency converters allowed achieving the following results:
- Significant reduction in electricity consumption;
- Increased stability of the technological mode;
- Reduced operating costs of equipment;
- Decreased likelihood of emergencies;
- Lower load on motors;
- Extended lifespan of bearings and other components;
- Possibility to exclude valves performing regulating functions from the design.