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2011 Matosinhos Data Book - Galp Energia

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01<br />

02<br />

03<br />

The following graphs show the consumption of these fuels at<br />

the refi nery.<br />

RFO consumpution (10 3 ton)<br />

2007<br />

2008<br />

Pollutant atmospheric emissions relevant in terms of<br />

environmental air quality are described in this chapter.<br />

04<br />

Sulphur oxides<br />

The graph below shows the absolute emissions of sulfur oxides,<br />

represented on the basis of equivalent sulfur dioxide, SO 2 .<br />

05<br />

2009 158<br />

2010 115<br />

<strong>2011</strong> 102<br />

Gas consumption (10 3 ton)<br />

2007<br />

2008<br />

7.2 Atmospheric emissions<br />

SO 2 emissions (10 3 t)<br />

2007<br />

2008<br />

99<br />

2009 4.05<br />

2010 3.51<br />

<strong>2011</strong> 3.39<br />

141<br />

11%<br />

decrease<br />

2009 134<br />

2010 143<br />

31%<br />

increase<br />

<strong>2011</strong> 188<br />

5.96<br />

3%<br />

decrease<br />

06<br />

211<br />

218<br />

9.89<br />

ENVIRONMENTAL PERFORMANCE 08 09 10 11<br />

Since the entry of natural gas into the refi nery’s fuel pool,<br />

in 2008, it has been observed a signifi cant decrease in the<br />

consumption of RFO, as it may be verifi ed in the charts.<br />

In <strong>2011</strong>, RFO consumption has decreased about 11% compared<br />

to consumption during the year 2010. This decrease is due in<br />

part to natural gas increased consumption in <strong>2011</strong> which was<br />

79,064 tons, compared to 45,338 tons consumed in 2010.<br />

As far as electricity is concerned, the refi nery sells or acquires<br />

electricity from the city network depending on whether there<br />

is surplus or shortage. The following graph shows the electricity<br />

produced and consumed.<br />

Electricity (10 3 toe)<br />

1 MWh = 0,29 toe<br />

2007<br />

2008<br />

2009<br />

2010<br />

<strong>2011</strong><br />

The graph below shows absolute emissions based on the level<br />

of activity:<br />

SO 2 emission by level of activity (kg/ton)<br />

2007<br />

2008<br />

2009<br />

2010<br />

<strong>2011</strong><br />

Electricity consumed Electricity produced<br />

0.99<br />

0.92<br />

0.88<br />

1.23<br />

2.59<br />

Sulfur is a natural component of crude oil. During the refi ning<br />

process it is possible to recover a great part of this element, but<br />

a residual portion is retained in refi ned products. When these<br />

are used as fuel, sulphur is released into the atmosphere.<br />

MATOSINHOS REFINERY / DATA BOOK ON HEALTH, SAFETY AND ENVIRONMENT <strong>2011</strong><br />

42<br />

41<br />

45<br />

46<br />

52<br />

54<br />

56<br />

59<br />

66<br />

65<br />

33<br />

07

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