Boiler driving power supply system

Abstract

Disclosed is a boiler driving power supply system capable of supplying steam generated in a steam boiler to a load device, while generating power by utilizing the steam, and of supplying as driving power for the steam boiler the power thus generated constantly and in a stable manner. A boiler driving power supply system is characterized by including: a steam power generation unit provided in a steam line for supplying steam generated in a steam boiler to a load device; and a power storage unit for storing power from the steam power generation unit as driving power for the steam boiler.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a system for supplying driving power for a steam boiler. [0003] 2. Description of the Related Art [0004] Hitherto, there has been known a steam boiler having such a structure that feed water is heated to generate steam that is supplied to a load device such as production equipment in a plant (see, for example, JP 2004-138301 A). In the steam boiler, it is necessary to provide boiler driving power, such as power for driving a blower for sending combustion air into the combustion chamber and power for boiler control. Conventionally, such boiler driving power is supplied from commercial power supply. [0005] If, while supplying the steam generated in the steam boiler to the load device, power generation is effected by utilizing the steam, and the power thus generated is used as driving power for the steam boiler, neither wiring cost for the power source nor electric charges are involved,...

AI Technical Summary

Benefits of technology

The present invention is a boiler driving power supply system that can supply steam generated by a steam boiler to a load device while simultaneously generating power from the steam. This system includes a steam power generation means and a power storage means for storing the power generated by the steam power generation means as driving power for the steam boiler. The system can also include a feed water heating means for heating the water to be fed to the steam boiler by using the steam generated by the steam power generation means. The technical effect of this invention is that it provides a stable and constant source of boiler driving power, even at start-up or during low load operation, by utilizing the steam generated by the steam boiler and storing it as driving power for the steam boiler. Additionally, the system can effectively utilize the steam and discharge dissolved oxygen, reducing corrosion of the steam boiler.

Problems solved by technology

However, in thus effecting power generation by utilizing the steam generated by the steam boiler, and using the power thus generated as driving power for the steam boiler, the following problems are involved.

At the start of the steam boiler, no steam has been supplied, so it is impossible to effect power generation, that is, it is impossible to secure the power required at the start of the steam boiler.

Further, when the amount of steam required in the load device is small (that is, at the time of low load operation), there is a fear of a sufficient amount of boiler driving power not being generated.

Further, when the amount of steam required in the load device increases (that is, at the time of load fluctuation), it is necessary to switch the steam boiler from low combustion state to high combustion state.

However, at the time of switching to high combustion state, the requisite amount of boiler driving power increases, so that, with the amount of steam available up to that point, it is impossible to secure the requisite amount of steam for effecting a corresponding power generation, which means there is a fear of power shortage.

In this way,in providing boiler driving power by utilizing the steam generated in the steam boiler, there is a problem in that it is rather difficult to constantly effect a stable power supply.

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