The materials used for further processing are raw materials, which can be the products of other processing processes or the products grown or naturally formed in nature. Materials that have not been processed and manufactured.
Packaging materials:
Responsible for packaging materials, used to improve the appearance of products, and has no effect on size and characteristics.
Accessories:
1, materials that play an auxiliary role in product production: many raw materials needed for light industrial production. ?
2, refers to the auxiliary raw materials in cooking, such as cooking onions, parsley, fungus, etc. ?
3. Accessories refer to accessories of clothing or down clothing, such as; Zippers, buttons, pocket labels, etc.
Extended data
Life cycle energy consumption of biodiesel prepared from different raw materials
Compared with petrochemical diesel oil, the overall energy consumption of bio-diesel oil made from soybean and rapeseed is basically the same as that of petrochemical diesel oil. The overall energy consumption of biodiesel made from bare bark tree and jatropha curcas is about10% lower than that of petrochemical diesel. The life cycle fossil energy consumption of biodiesel made from all raw materials decreased significantly, and the life cycle HC, CO, PM 10, SOx and CO2 emissions decreased, while NOx emissions increased.
Life cycle energy consumption
Overall energy consumption, fossil energy consumption, life cycle energy efficiency and fossil energy efficiency ratio of diesel oil and biodiesel made from different raw materials.
It can be seen that the overall energy consumption and fossil energy consumption of diesel oil with energy of 1MJ are 1. 260733MJ and 1. 256407 MJ respectively, and the overall energy efficiency and fossil energy efficiency ratio are 79. 32% and 0. 796 respectively. Because the raw material of diesel oil production is fossil energy, its life cycle fossil energy efficiency ratio is basically the same as the overall energy efficiency.
Compared with petrochemical diesel oil, the overall energy consumption of biodiesel made from soybean and rapeseed is basically the same as that of petrochemical diesel oil. The overall energy consumption of biodiesel made from the bare bark tree and Jatropha curcas decreased by about 10% in the life cycle. Among the four raw materials, soybean, rapeseed, jatropha curcas L. and jatropha curcas L., the overall energy consumption of biodiesel made from soybean is the highest, while that made from jatropha curcas L. is the lowest.
In the life cycle of biodiesel, biodiesel production is the main stage that produces overall energy consumption, which accounts for 83% ~ 97% of the overall energy consumption in the life cycle. Followed by raw material planting and raw oil production, accounting for 12% and 3% of the total energy consumption in the life cycle respectively.
Therefore, reducing the overall energy consumption in biodiesel production is the main way to reduce the overall energy consumption in its life cycle. In addition, because Lepidium wilsonii and Jatropha curcas are wild woody plants, the overall energy consumption in the raw material planting stage is approximately zero.
Raw material planting, raw oil production and biodiesel production are the main stages of fossil energy consumption. Among them, the fossil energy consumption of soybean and rapeseed in the planting stage accounts for 55% and 52% of its life cycle respectively, while the fossil energy consumption of bare bark and jatropha curcas in the raw material planting stage is nearly zero;
The fossil energy consumption produced in the production stage of soybean oil and rapeseed oil accounts for 13% of the life cycle fossil energy consumption, while the fossil energy consumption produced in the production stage of bark tree oil and jatropha curcas oil accounts for 27% and 24% of the life cycle fossil energy consumption respectively.
References:
Baidu encyclopedia-raw materials