On energy consumption in integrated refining and chemical projects
Thread Content
Recently, I came across information regarding Sichuan’s large-scale oil refining and integration project. It is said that this project processes 10 million tons of crude oil per year, producing 2 million tons of high-quality gasoline – half of which meets Euro III standards and the other half meets Euro IV standards. Additionally, 3.6 million tons of high-quality diesel are produced, all of which meet Euro IV standards. 800,000 tons of ethylene; the energy consumption for producing ethylene is 558 kg of standard oil per ton of ethylene. The current highest level in China is 596 kg per ton of ethylene, while the average value is 750 kg per ton of ethylene. Question: 1. Why is there such a large difference in energy consumption among large-scale ethylene plants in China, with those at higher levels consuming 60% more energy than those at lower levels? 2. What is the energy consumption calculation standard for ethylene? 3. What is the concept of reference oil? 4. What is the energy consumption of refined oil? How is it calculated? 5. Integrated refining and chemical processing plants require large amounts of fuel to provide energy and heat; where does this fuel come from? What is the proportion of fuels from different sources? Welcome feedback from friends in Sichuan; thanks for your help!
Reference oil refers to an equivalent fuel oil with a calorific value of 41.868 GJ/t. In other words, if the calorific value of the fuel oil is 41.868 GJ/t, this fuel oil can be regarded as standard oil. In the production process, the energy-consuming fluid can be fuel oil, or it can also be fuel gas, steam, water, etc.; converting it to standard oil facilitates comparison and calculation. kg of standard oil per t refers to the mass of standard oil equivalent to the energy or energy-consuming medium consumed per t, when converted into standard oil. Currently, the sources of fuel for refining and chemical companies are diverse: fuel oil, refinery fuel gas, coal, natural gas, etc. The proportion of recycled refinery fuel gas is increasing.
The OP’s question is great! It is well worth in-depth discussion by domestic refining and chemical experts, to serve as a reference for those newer to the industry!
It would be best to have examples to illustrate it
This is just a design value; the actual amount that can be achieved remains to be verified in practice