Alfa Laval Wins a Repeat Environmental Order for Marine Exhaust Gas Cleaning Systems

Alfa Laval - a world leader in heat transfer, centrifugal separation and fluid handling - has won an order to supply Alfa Laval PureSOX exhaust gas cleaning systems to the Dutch ship owner Spliethoff. The order is booked in the Marine & Offshore Systems segment and delivery is scheduled for 2014. Due to a confidentiality agreement Alfa Laval is unable to disclose the value of the order.

Wärtsilä expands its portfolio with two new auxiliary engines

Wärtsilä, the marine industry’s leading provider of innovative products, solutions and services, is expanding its engine portfolio with the introduction of two additional auxiliary engines, the Wärtsilä Auxpac 16 and the Wärtsilä Auxpac 32.

Sulzer Pumps Launches New Pump Performance Expert Service that Reduces Total Cost of Ownership in the Pulp and Paper Industry

Sulzer Pumps has launched a new Pump Performance Expert service for customers in the pulp and paper industry. This new global service will contribute not only to reducing customers’ Total Cost of Ownership (TCO) but also to achieving significant benefits in their existing and future processes

Caterpillar Global Petroleum was chosen by COSCO

Caterpillar Global Petroleum stated that the Cat® 3516C (HD) and 3512B generator sets have been chosen to power a jack-up and a tender barge new-build for the biggest Chinese shipping company, COSCO Shipyard. The 6 Cat 3516C (HD) generator sets, each with rated power of 1603 bkw @ 1200 rpm, are going to be used as the prime power for the COSCO tender barge while 5x 3516C (HD) generator sets are going to be installed on the jack-up oil rig.

Each new-constructed is also going to utilize 1x Cat 3512B generator set with a power rating of 1102 bkw @ 1200 rpm for emergency power. The projects are currently under construction at the shipyards of COSCO in China and the units are scheduled to be delivered in 2013.

Both new-builds are between the many offshore projects, which have been provided by the company of Caterpillar Global Petroleum in China. Since 2011, Cat 3516C (HD) has been the power solution of choice for both jack-up rigs and tender rigs at leading China shipyards including COSCO Shipyard Group, Dalian Shipbuilding Industry Corporation, CIMC Raffles and Shanghai Waigaoqiao Shipyard

heat exchanger

Shell type Heat Exchangers:

Sell and Tube Heat Exchangers for engine jacket water and lubricating oil cooling are normally circulated with seawater. The seawater is in contact with the inside of the tubes and the water boxes at the cooler ends. The oil or water being cooled is in contact with the outside of the tubes and he shell of the cooler. Baffles direct the liquid across the tubes as it flows through the cooler. the baffles also support the tubes.

Tubes of Aluminium-brass (76% copper; 22% zinc; 2% aluminium) are commonly used. The remedy in these systems is to fit sacrificial soft iron or mild steel anodes in water boxes or to introduce iron in the form of ferrous sulphate fed into the seawater. The latter treatment consists of dosing the seawater to a strength of 1 ppm for an hour per day over a few weeks and subsequently to dose before entering and after leaving port for a short period.

Early tube failures may be due to pollution in coastal waters or to turbulence in some cases. Many coolers are fitted with tubes of 70/30 Cupro-Nickel. More expensive materials are available. Tubes are expanded into tube plates and may be further bonded by soldering.