Page 116: of Maritime Reporter Magazine (June 1992)

Sulzer Conducts

Research Into Diesel

Exhaust Emissions

Sulzer recently commissioned a 6-cylinder RTA38 research engine at the Mobil refinery at Notre Dame de Gravenchon in France.

The new engine is being used by a joint research group consisting of

New Sulzer Diesel Ltd., Mobil Oil

Corporation and Sulzer Brothers

Ltd., to explore the performance of selective catalytic reduction (SCR) for reducing nitrogen oxides (NOx) emission levels, the pollutant that leads to photochemical smog and acid rain.

The 6RTA38 research engine is basically a standard production en- gine from the Sulzer RTA series of low-speed 2-stroke engines widely used for ship propulsion. The 6RTA38 is provided with an SCR converter which uses a KatapakR catalyst unit from Sulzer Chemtech.

The catalyst is coated on the inter- nal surfaces of a static mixer within the KatapakR unit.

New Sulzer Diesel believes that

SCR has the capability of removing 90 percent of NO from an engine's exhaust gasses. 'The SCR process uses an ammonia spray, in the form of urea, directed into the hot ex- haust gases upstream of the SCR converter. In the presence of the catalyst, NOx gases and ammonia react to form nitrogen and water vapor, both natural components of

MANY

CRANES TO

MANY

OWNERS

CARGO CRANES

SERVICE CRANES

OFFSHORE CRANES

HAGGLUNDS INC 50 CHESTNUT RIDGE ROAD

MONTVALE,

NEW JERSEY 07645

USA

TEL.: 201-391 89 30

FAX: 201-391 86 94

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Digital Gyro Repeaters

BRIDGE WING MOUNTING of LR40/LR60 Digital Gyro Repeaters

The LR40/LR60 can now be panel-mounted on the Bridge Wing using a "flip-up" plastic cover.

The cover is specified to IP55. • Large super-bright Digital Heading Display. • Analog Turning Indicator - allowing instant estimation of turning rate. • Will work from most types of gyro compasses. • Programmable as Master Repeater or Slave

Repeater. • Digital Data output (RS422) - for integration with survey and navigation computers.

Scandinavian micro systems P.O.Box 155, N-14J1 Kolbotn, Norway Phone +4728071 07

Fax +472 80 80 95 the atmosphere.

The Gravenchon exhaust emis- sions research follows several years of work on the subject at New Sulzer

Diesel Ltd. New Sulzer says that their design possesses the following features: its compact size allows it to be integrated with modified engine exhaust manifolds; the engine's low inertia means that ammonia slip, the quality of ammonia slipping past the catalyst, is extremely low, even during transients; a low pressure drop and a short heating up time; a low fouling tendency, which ensures very little deterioration in the per- formance over time.

The New Sulzer test program will assist the company in developing solutions to NOx emission reduction from both ships" and stationary die- sel power plants. The company is also exploring the possibility of ret- rofitting existing low-speed Sulzer diesel engines with KatapakR units.

For more information on New

Sulzer's SCR converter system tech- nology,

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Corps Of Engineers

Expands Salmon Transport

On Columbia River

Begun on the recommendations of the National Marine Fisheries

Service over a decade ago to improve the survival rate of steelhead salmon, the Army Corps of Engi- neers is expanding its salmon barge service from Idaho to the Pacific

Ocean.

In the past, barge operators on the Columbia River loaded the Army tank barges with young salmon above the Snake River's largest dam, in Idaho, and then unloaded the fish below Bonneville Dam. Under the new service, 2 barges a week are continuing another 140 miles down river to Astoria, Oregon, where the river meets the Pacific.

The first test barges were moved by Brix Maritime Co, of Portland, who has this year's tug contract to move the corps' barges.

The Corps of Engineers use spe- cial barges that continually circu- late river water through their tanks, allowing young fish to imprint on the changing chemistry of the water they pass. In theory, this will let the fish recognize the water chemistry on their return spawning trip. The program should eventually have a significant effect on increasing the yearly salmon population.

Tidewater Names Vaccaro

Manager Of Insurance

Ralph A. Vaccaro, Jr., was re- cently named manager of insurance by Tidewater Inc., of New Orleans.

He was with Zapata Gulf Marine

Corp., which recently merged with

Tidewater.

Maritime Reporter/Engineering News

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