Issues regarding the calculation of energy consumption in refineries
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According to GB30251, the energy consumption limit per unit of product for oil refining: the comprehensive energy consumption per unit of oil refining is, within the same statistical report, the ratio of the total comprehensive energy consumption for oil refining to the total amount of crude oil and purchased raw oil processed. My question is, does the processing volume of this crude oil and purchased raw oil refer only to the processing capacity of a single processing unit? If the refinery has secondary processing equipment such as coking, catalysis, and hydrogen addition, should their processing capacity also be included? According to DB37/755-2007, the energy consumption limit per unit of energy in the refining industry is defined as follows: the amount of raw materials processed by a refining company should include all raw materials such as crude oil, wax oil, and heavy oil purchased from outside. Then, since the raw materials for hydrogen production are gasoline and diesel, should these be included as well?
Our factory’s unit consumption should be calculated based on the amount of crude oil processed; the only other externally purchased raw material is methanol, which is used in the production of MTBE, and it shouldn’t be included in the denominator. Our factory does not purchase heavy oil; the raw materials for catalysis and coking are produced internally, so they are not included in the denominator. If heavy oil is sourced externally, it shouldn’t be calculated this way.
This post was last edited by doubly_fly on 2016-1-31 15:41. DB37/755: Energy factor of a processing unit: It is calculated as the product of the ratio of the processing volume of that unit during the statistical period to the total raw material processing volume of the entire plant, and the energy coefficient of that unit. For example: is it the ratio of the processing volume of this refining unit (such as diesel hydrogenation, where the raw material is diesel) to the total raw material processing volume of the entire plant (which consists only of feed oil or crude oil), multiplied by that unit’s energy coefficient – that is, the ratio of diesel to crude oil, multiplied by the unit’s energy coefficient? Am I right? That is, whether it is the calculation of the overall energy consumption per unit or the energy factor of a device, the total amount of raw materials used is only that of crude oil; heavy oil used in catalytic processes, residue oil used in coking, and diesel used in hydrogen production are not included in this total. Is this the correct way to understand it? And what are the parameters used to evaluate the energy consumption level of each device? Or how should it be expressed? Is it just the energy consumption quota for the refining plant? Master, please clarify
Gasoline and diesel purchased from outside are not included; the consumption is calculated based on the raw materials
What about the diesel produced locally? Use one’s own coker diesel and gasoline for diesel hydrogenation at the same facility
I don’t know what it’s for – energy consumption, water, electricity, gas, and air usage, as well as the initial raw materials are taken into account; everything else isn’t
Water, electricity, steam, and wind are energy-consuming working media; this should be included, right?
Yes, if you calculate the total energy consumption of the entire plant, you should use the maximum processing capacity of each unit for determining the energy consumption related to water, electricity, steam, and air. After that, you can calculate the specific energy consumption based on the actual processing volume of the vacuum distillation unit
Purchased raw materials (gasoline, diesel, etc.) should all be included in the denominator, as these are not products derived from the refining of crude oil. Otherwise, there would be very little crude oil purchased on a monthly basis, while there would be plenty of residue oil, wax oil, etc.; wouldn’t that result in high energy consumption for the company? ?
When calculating the overall energy consumption of the entire plant (where steam boilers are used to generate steam), is steam included among the energy-consuming substances?； If steam is included, power boilers generate steam while consuming fuel, and this fuel is still counted as part of the plant’s overall energy consumption. Is such a calculation reasonable?