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Exhaust gas waste heat steam producing system of marine diesel generating set

A diesel generator set, exhaust gas technology, applied in the steam generation method using heat carrier, etc., can solve the problems that the exhaust gas temperature cannot be reduced to a reasonable temperature, and the waste heat of the exhaust gas of the main engine cannot be fully utilized, so as to reduce fuel consumption, The effect of saving fuel costs and saving maintenance

Inactive Publication Date: 2012-11-14
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

[0005] On large diesel engine merchant ships with higher power and over 10,000 tons, as the engine power increases, the waste heat enthalpy of the exhaust gas will also increase. Using the exhaust gas boiler instead of the fuel auxiliary boiler to generate steam for domestic miscellaneous purposes and fuel heating will Cannot make full use of the exhaust waste heat of the main engine, so that the exhaust gas temperature cannot be lowered to a reasonable temperature

Method used

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  • Exhaust gas waste heat steam producing system of marine diesel generating set

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0030] Since the current working pressure of the marine exhaust gas boiler and the auxiliary fuel oil boiler is usually 0.7 MPa, this embodiment takes the working pressure of the exhaust gas boiler as 0.7 MPa to illustrate the working characteristics of the system.

[0031] Such as figure 1 As shown, the exhaust gas produced by the marine diesel generator set 10 first enters the exhaust manifold 9, and then the exhaust gas enters the exhaust turbine (not shown) in the tu...

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Abstract

The invention discloses an exhaust gas waste heat steam producing system of a marine diesel generating set. The exhaust gas waste heat steam producing system comprises a hot well, a boiler water-feeding pump, a steam pocket, an exhaust boiler, an evaporator and a preheater, wherein the evaporator and the preheater are installed in the exhaust boiler, and the hot well is sequentially connected with the boiler water-feeding pump, the preheater, a steam pocket first inlet, a steam pocket first outlet, the evaporator, a steam pocket second inlet, a steam pocket second outlet and a fuel auxiliary boiler. Exhaust gas produced by the marine diesel generating set is led into the exhaust boiler. The exhaust gas waste heat steam producing system can effectively recover exhaust gas waste heat of the marine diesel generating set, save fuel cost and improve ship environment friendliness.

Description

technical field [0001] The invention relates to a waste gas and waste heat recovery system of a marine diesel generator set, in particular to a steam production system from waste gas and waste heat of a marine diesel generator set. Background technique [0002] Ships are the main means of transportation for the economy and trade of various countries. In order to be able to perform transportation tasks reliably for a long time, ships cannot do without power supply. Due to a series of advantages such as high thermal efficiency, reliable operation and long service life, diesel generator sets have become the first choice for ship power stations. The power demand of the ship during normal navigation, loading and unloading, entering and leaving the port, and berthing is different, so the load of the diesel generator set is also different, but there is always a diesel generator set that is always on to ensure the normal power demand of the ship. . Diesel engines used for marine p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B1/18
Inventor 马哲树杨东
Owner JIANGSU UNIV OF SCI & TECH
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