Environmental impacts of fractional distillation of crude oil

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Environmental impacts of fractional distillation of crude oil

Gas flaring and gas venting Gas flaring and gas venting In an oil field, oil is almost always associated with a certain quantity of natural gas: However, the recovery of this gas presumes that there are the transportation infrastructures required to move it to the points of consumption: Hence the problem arises of what to do with the associated gas.

The term gas flaring indicates the combustion of gas without energy recovery in an open flame that burns unceasingly at the top of flare stacks in oil production sites. This practice has resulted in the burning of large quantities of gas with the consequent production of huge amounts of carbon dioxide together with sulphur dioxide and nitrous oxide, which have contributed substantially to atmospheric pollution.

In order to better understand the scale of the problem, it is sufficient to observe nocturnal images of Earth from space: Consider that in Italy today where the practice of gas flaring is limited not only because there are fewer oil fields respect to gas fields, but also because Italy attempts to use all the natural gas produced one million tonnes of carbon dioxide are produced every year as a result of gas flaring, while in Nigeria, where this practice is still greatly utilised, hundreds of millions of tonnes are produced!

Besides the practice of gas flaring, there is also that of gas venting. Gas venting is the discharge of unburned gases into the atmosphere, often carried out in order to maintain safe conditions during the different phases of the treatment process.

During venting operations methane, carbon dioxide, volatile organic compounds, sulphur compounds and gas impurities are released.

In many cases gases that are being vented could be burnt rather than dispersed into the atmosphere; this would partially reduce the environmental impact in terms of greenhouse gases, because the gases would be oxidised to form carbon dioxide, which has a global warming potential 21 times lower than methane.

Currently, the above-mentioned practices are subject to strong restrictions, both for economic the gas produced could be sold and consumed rather than wasted!

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Under the Kyoto Protocol, there are incentives for the construction of plants that have minimum environmental impact and which, at the same time, do not waste precious resources. In more developed countries, this practice has been almost totally abandoned because it is a waste of an important resource and the infrastructures required to utilise the gas in situ are not difficult to implement.

On the contrary, in many developing countries the gas is often not required at the production site and the costs of transportation are very high. For this reason, there are incentives to implement practices that are more feasible and less costly such as, for example, natural gas reinjection into the reservoir to increase its pressure and consequently its efficiency, small-scale natural gas liquefaction plants on the production site, the generation of electricity in situ, the distribution of natural gas to neighbouring urban areas, its use for transportation, etc.Back to Home-Built Carbon Dioxide (CO2) Laser Sub-Table of Contents.

Basic Home-Built CO2 Laser Information Introduction to Home-Built CO2 Laser The carbon dioxide (CO2) laser is the powerhouse for high tech industrial cutting and welding of metals and many other materials.

An easy-to-understand introduction to the science and technology of plastics. What are they and what do we use them for? * Two common measures of energy are British thermal units (Btu) and joules.

Environmental impacts of fractional distillation of crude oil

All forms of energy can be expressed in these units. One Btu is the amount of energy needed to raise the temperature of one pound of water from 39 to 40 degrees Fahrenheit. One joule is the amount of energy needed to lift one hundred grams ( ounces) upward by one meter ( feet) while on the surface of the earth.

Download-Theses Mercredi 10 juin Syllabus-specification CONTENT INDEX of revision summary notes (for separate science AQA GCSE chemistry). Revision summaries for Paper 1 AQA GCSE Chemistry 1 (separate page) (separate science AQA GCSE chemistry).

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What's assessed in this paper? SUMMARY Topic 1 Atomic structure and the periodic table (AQA GCSE Chemistry . Petroleum. Petroleum is a thick liquid mixture of hydrocarbons occurs naturally and found in geological formations under the Earth's surface. It is extracted and refined into various types of fuels including petrol, paraffin, diesel oil.

Petroleum components are separated using a technique called fractional distillation.. Crude oil. Crude oil is a naturally occurring, foul or unrefined mixture.

Natural gas - Gas flaring and gas venting - Eniscuola