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Octane booster
TESO SPEC

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Octane booster

TESOSPEC Octane boosterS: T-OB

 

TABLE 1. Physical properties and composition:

Parameter

Measure unity

Standard

Additive and values

T-OB A

T-OB AM

T-OB B

T-OB BM

Appearance

-

visual

Homogeneous liquid: yellow to brown

Solubility in hydrocarbons

-

visual

Total miscible

Density

kgm-3

EN ISO 3675

0.92 - 0.94

0.97- 0.99

Final boiling point

0C

EN ISO 3405

195 - 200

N-methylaniline (NMA) content

w%

 

40

40

70

70

Oxygen content

w%

EN 1601

15 -20

15 -20

1.5-3.5

1.5 – 3.5

Benzene content

w%

EN 12117

 

<0.05

 

 

Sulfur content

ppm

EN ISO 20846

<0.1

Metal content

ppm

EN 237

no

*

no

*

Water content

w%

EN ISO 12937

< 0.5

*when local or regional regulations permit, it uses MMT, that metal concentration in gasoline to comply with allowed limits

 

General comportment: Similar with other additives based on N-methylaniline, the antiknock power for the all additives T-OB:

 

 

TABLE 2. Antiknocking properties: The octane number increasing for 1 v% additive adding in crude gasoline

Crude gasoline RON

Increase

Additive

T-OB A

T-OB AM*

T-OB B

T-OB BM*

 

84-85

ΔRON

2.8 – 5.7

3.4 – 8.3

3.5 – 7.0

4.4 – 9.5

ΔMON

2.8 – 5.7

**

2.1 – 5.2

2.6 – 7.1

ΔAKI

2.8 – 5.7

 

2.8 – 6.1

3.5 –8.3

 

89-90

ΔRON

1.7 – 3.4

2.1 – 5.9

2.0 – 4.0

2.4 – 6.5

ΔMON

1.7 – 3.4

**

1.2 – 3.0

1.4 – 4.7

ΔAKI

1.7 – 3.4

 

1.6 – 3.5

1.8 – 5.6

 

94-95

ΔRON

1.0 – 1.6

1.4 – 3.1

1.3 – 2.0

1.7 – 4.5

ΔMON

1.0     – 1.6

**

0.7 – 1.4

1.0 – 2.6

ΔAKI***

1.0 – 1.6

 

1.0 – 1.7

1.4 – 3.5

84 - 95

ΔMON/ΔRON

≈ 1

**

0.60 – 0.75

0.60 – 0.75

Δ σ****

≈ 0

**

0.6 – 1.8

0.7 – 3.2

*MMT – Mn concentration 2 - 18 mg/L in treated gasoline; ** MON values depend strongly by gasoline composition when MMT is in additive – there are necessary test before application; *** Average knock number AKI = (RON+MON)/2; **** Sensitivity; σ = RON – MON; optimum is σ =10 for a good gasoline quality

Octane numbers measurement: STANDARD RON EN ISO/DIS 5164; MON EN ISO/DIS 5163

   The additives use:

 

 T-OB A additive has special formulation in order to ensure almost equal increase both of Ron and of MON.  Except ethers such as MTBE, ETBE, TAME, other octane boosters induce MON deficit (TABLE 3). It is a disadvantage in order to manufacture EU PREMIUM gasoline complying with EN 228 Standard, when MON value ≥ 85.2, as required level, may be in many cases critical parameter. The use of the octane boosters with MON deficit determine a higher additive consumption due to the need to reach MON = 85.2. Therefore, RON increases more than MON and as result the gasoline sensitivity σ and over quality OQ increase (TABLE 4). Although T- OB A additive has lower apparent RON than NMA93, it has higher apparent MON than NMA (TABLE 4

 

 T-OB B additive is mainly useful for raw gasoline with low antiknock power and MON value is not critical.

 

The advantage of the T-OB additiveS:

 

  1. a.       COST: T –OB additives are more expensive than MTBE but they are less expensive than octane boosters based on N-methylaniline, used at 93 and 99% purity (NMA93 and NMA99) (figure 5). T-OB A additive is the cheapest solution in order to obtain EU PREMIUM gasoline (figure 6 and T-OB A application). T – OB additives are the best solution to replace MTBE when it uses low octane number gasoline (figure 7). If the local regulations allow the use of MMT, the cost saving at REGULAR gasoline manufacture increases about 10% (8mg/L Mn in REGULAR gasoline) – figure 8).

 

  1. b.      The decrease of commercial gasoline AMOUNT:  In some regions such as Europe, the gasoline production exceeds demand and diesel and jet-fuel production is in deficit. The T-OB additive, having octane power higher than MTBE, the necessary concentration are less and commercial gasoline volume decreases about 5 -10%. (figure 9).

 

  1. c.        The use of naphtha in commercial gasoline manufacture: Naphtha is distillation fraction, with RON 60 -65 and MON 65 -70, which may be less expensive than FCC and RC gasoline. It may be add in gasoline:

 

 

  1. d.      SUPER GASOLINE RON +98 MANUFACTURE: It is possible to manufacture SUPER +98 gasoline, starting from raw gasoline RON 94 or less. MTBE or ETBE may increase the oxygen content in gasoline > 2.7 w% (limit in EN 228 for EU gasoline) (TABLE 6)

 

  1. e.      Gasoline Manufacture Optimization: Octane boosters T-OB, having high antiknock power, permit to diminish processes severity, mainly RC. In this way energy consumption decreases, yield in hydrocarbons increases and more hydrocarbons amount becomes available to manufacture diesel and jet

 

 

Our specialists:

 

 

They have worked between 2008 and 2010 in ROMPETROL Business Development Department, where they have formulated similar additives, applied to manufacture of EU PREMIUM and SUPER gasoline:

 

 

They have formulated SUPER gasoline ALTO 101 (RON +100), based on ADD 8 and ADD 8M.

 

Other applications based on our octane boosters, together RHEOCHEMIE Company, are in progress in some refineries now.