Which additives improve cetane number of diesel?

Alkyl nitrates (principally 2-ethylhexyl nitrate) and di-tert-butyl peroxide are used as additives to raise the cetane number of diesel.

What is ethylhexyl nitrate?

2-Ethylhexyl Nitrate has been used for decades to enhance the quality of petrodiesel and biodiesel fuels by raising the cetane number. This additive may be used to improve ignition quality to give reduced noise, reduced emissions, better cold startability, and improved fuel economy.

How can you increase the cetane number of biodiesel?

The oxygenated additives in biodiesel blend components improve the combustion process, especially the octane rating. Additionally, oxygenated additives enhance and increase the cetane number.

Can you use too much cetane booster?

If you increase the cetane number too high (55 and beyond), it can deteriorate the fuel and actually cause a reduction in overall engine performance. The truth is the negative effects of cetane boosters far outweigh the benefits.

Can you add too much diesel additive?

You can easily add too much of a high-quality diesel fuel additive. What happens when you over-treat your diesel fuel? Overdosing can lead to a whole new list of fuel and engine issues from clogged filters to overall decreased engine performance and efficiency. If you’re losing lubricity, don’t over-treat.

What is cetane booster made of?

One of the main Cetane Improver additives manufactured today is 2-ethylhexyl nitrate (CAS n°: 27247-96-7) which starts to decompose at 130 °C. 2-ethylhexyl nitrate is the result of the reaction of 2-ethylhexanol and nitric acid.

How do you increase cetane?

Innospec can also provide a nitrogen-free Cetane Number Improver, CI-0808. This additive can be used to increase the Cetane Number of diesel fuels without increasing the fuel nitrogen content. CI-0808 is a blend of Di-tert-butyl peroxide in solvent and is typically used at 0.05% to 0.50% volume.

Does biodiesel have higher cetane?

Biodiesel produced from tallow will be high in saturated fatty esters and have a high cetane number. Biodiesel produced from unsaturated vegetable oils, such as soybean oil, will have a lower cetane number.

How do I find my diesel cetane number?

In the ASTM D613 test, the cetane number of a diesel fuel is determined by comparing its ignition delay in the standard CFR test engine with those for blends of reference fuels of known cetane number.

What is a cetane improver?

A Cetane Improver [′sē‚tān im′prüv·ər] is a chemical which has the effect of increasing a diesel fuel ‘s Cetane number. A few examples are nitrates, nitroalkanes, nitrocarbonates and peroxides .

What are cetane number additives?

The additives increase the Cetane Number of distillate fuels by improving fuel ignition characteristics in the combustion chamber during the compression stroke. Innospec’s CI-0801 is a 2-Ethylhexyl nitrate (2-EHN) Cetane Number Improver, which can be readily used by refiners, distributors and fuel users in all types of diesel fuel.

How to increase the cetane number of diesel fuel without increasing nitrogen?

Innospec can also provide a nitrogen-free Cetane Number Improver, CI-0808. This additive can be used to increase the Cetane Number of diesel fuels without increasing the fuel nitrogen content.

What is ci-0801 cetane number improver?

Innospec’s CI-0801 is a 2-Ethylhexyl nitrate (2-EHN) Cetane Number Improver, which can be readily used by refiners, distributors and fuel users in all types of diesel fuel. Typical treat rates are 0.025% to 0.40% volume. Innospec is unique in the significant level of 2-EHN Cetane Number Improver it stocks in various global locations.