Luo Luo received 8 orders for MTU4000 series engines

It is reported that Rolls-Royce has signed a contract with the Sanmar shipyard in Turkey to provide eight MTU4000 series engines for four newly constructed port tugs, including four additional engine alternative contracts. Each of these tugs will be equipped with two 16V 4000 M73L MTU engines with a single power of 2,700 kW at 1,850 rpm.
Luo Luo received 8 orders for MTU4000 series engines
This is the first time that Rolls-Royce's MTU high-speed engine is used to power port tugs for this power range. Previously, only medium-speed machines could be used as the port tugboat with a bollard pull of more than 85 tons. The Robert Allen/Rastar 2900 SX port tugboat, which is just 30 meters long, will join the Danish Svitzer tugboat fleet in 2018.

Rolls-Royce and the Sanmar shipyard in Turkey have signed contracts for two 16-ton bollards to provide four 16V 4000 M63 engines with a single power of 2,000 kW. The new contracts that Sanmar Shipyard has undertaken have brought the tugs they have undertaken so far and the number of tugs equipped with MTU engines to 16 vessels. At present, half of the tugs provided by Sanmar Shipyard are equipped with MTU engines.

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The blast furnace uses steel plates as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into 5 parts from top to bottom: furnace throat, furnace body, furnace waist, furnace belly and furnace hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency and low energy consumption, the iron produced by this method accounts for the vast majority of the world's total iron output.


During the production of blast furnace, iron ore, coke, slag-making flux (limestone) is loaded from the top of the furnace, and preheated air is blown in from the tuyere located at the lower part of the furnace along the furnace periphery. At high temperatures, carbon in coke (some blast furnaces also spray auxiliary fuel such as pulverized coal, heavy oil, natural gas, etc.) burns with carbon monoxide and hydrogen produced by the oxygen blowing into the air to remove iron ore during the ascent in the furnace Oxygen, thereby reducing iron. The molten iron is released from the iron mouth. Unreduced impurities in iron ore combine with flux such as limestone to form slag, which is discharged from the slag port. The produced gas is discharged from the top of the furnace, and after dedusting, it is used as fuel for hot air furnace, heating furnace, coke oven, boiler, etc. The main products of blast furnace smelting are pig iron, as well as by-product blast furnace slag and blast furnace gas.

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