Energy Savings Using StreaMax™-coated Tubes

Table 4: The Coating Process for StreaMax Tubes

Process/Product

Heat treatment Sandblasting Special sand Primer

Mid-coat Top-coat Total

Total gas for one

piece of a 12m tube Total for 1m tube Total per 9,000m tubes

Number of Tubes

12 12 12 6 6 6

Length of Tubes (m) Gas (m3

12m 12m 12m

402

Various Various Various

695 363 275

1.735 289

24 216,000

)CO2

906

emission (kg)

Price (DKK)

3.284

1.566 818 620

3.917 653

54.4 489,600

5.678 2.965 2.247

14.174 2.362

196.8 1,768,000

Man-hours

6

12

6 6 6

diameters, are heat-treated, coated, dried and sintered at the same time in the same oven. The example given in Table 4 is therefore typical. The pay-back time for the 9,500m of 6.184-inch tube is calculated as customer’s price/374.400 = x days, so in this example pay-back time for CO2 based on gas consumption is 1,768,000/184,944 = 9.6 days.

It should be noted that the above example is based on test production at Munkegårdsvej 16, and only takes into account the amount of gas used, not the cost of manpower, sand for sandblasting and equipment. When the new production plant is operating, a more accurate calculation can be made. n

1. DuPont® StreaMaxTM Coating, ‘Flow Solutions for the Oil & Gas Industry’.

Contact information

Accoat A/S

Munkegaardsvej 16 DK-3490 Kvistgaard Denmark

Tel: + 45 49 12 68 00, Fax: + 45 49 12 68 99 E: info@accoat.dk, www.accoat.com

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