JPS6246101A - Power supply type boiler - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is applicable to, for example, chemical plants and food industries.
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This relates to a power co-supply type boiler that requires power demand in conjunction with steam demand.

(Conventional technology) In response to the demand for in-house production and cogeneration of steam and electricity, conventionally (A) an engine generator and a boiler were installed independently, and in this case, the boiler basically supplied an air blower and a fuel supply. There is a type that consists of a boiler case and a boiler body.

(B) Engine generator for energy saving
: A method of attaching a waste heat boiler to the
: However, the waste heat boiler in this case consists of an exhaust blower and a boiler can.

(Problem to be Solved by the Invention) In the case of (A) in the conventional technology, the blower and fuel supply device require a fairly large supply of commercial power for driving, and in particular, the blower and fuel supply device are not powered by commercial power. When using such devices, it is often very difficult when a power outage occurs.

Furthermore, engine generators have insufficient airtightness, so they make a lot of noise, and their waste heat is not effectively used in the boiler, so there is a problem in energy saving.

On the other hand, boilers have the problem of high NOx in exhaust gas due to high temperature combustion. In case (B) of the conventional technology, waste heat from the engine is utilized in the boiler, but there is a problem in that the utilization rate is low and energy saving is insufficient. Further, the problem of large noise from the engine generator is the same as in case (A).

Furthermore, waste heat boilers not only have the fundamental problem of not being able to control the steam supply according to the demand for tea because they do not have a combustion burner, but also have the fundamental problem of not being able to control the steam supply according to the demand for tea, but also because they are electric power pressure systems. The balance between the steam and electricity used is poor, and there are many hours of use. This is because in the demand for co-supply of steam and electricity in general industry, the demand for steam is usually several times that of electricity.

(Means and effects for solving the problem) This invention was made in view of the above points.

The power unit is housed in a highly airtight casing, and a ventilation hole is provided to air-cool the inside of the National Sports Festival room, and the cooling air outlet is connected to the air supply port located on the windward side of the burner blower. The exhaust pipe of the engine is also connected to the leeward air passage of the burner blower. This makes it possible to supply air preheated by waste heat from the power plant to the boiler device as fuel combustion air, thereby improving energy savings. Furthermore, if the above engine is water-cooled.

A separate heat radiation tank is installed to dissipate heat from the engine cooling water.
By preheating the make-up water through heat exchange with the boiler make-up water in the tank and dissipating the heat from the engine cooling water, energy saving performance is not only further improved (but compared to conventional engine generators). This eliminates the need for an engine cooling water heat dissipation fan, as in cases such as this, which results in significant energy savings and at the same time improves the degree of airtightness of the national structure.

Noise reduction is also possible. Moreover, the output from the power plant can be used to drive the blower and fuel supply device for operating the boiler device.

(Example) This invention will be explained based on the drawings.

In the drawing, the engine constituting the power unit is a water-cooled type, the exhaust of the engine is connected to the wind path on the leeward side of the blower of the boiler device, and the engine output is directly connected to the generator. This shows the basic configuration of an embodiment. ing.

The power plant ■ consists of an engine ■ and a generator ■, and the national polity ■
At the same time, the national body ■ is connected to the burner blower ■ by the blower pipe 0.

The exhaust from the engine (■) is connected to the leeward side air passage of the burner blower (■) by a blow pipe [phase]. In addition, the cooling water for the engine ■ is led to the heat radiation tank ■.

Enables preheating of water supply to the boiler body ■.

Fuel for boiler load control is supplied from fuel supply nozzle (■).

(Effect of the invention) This invention is constructed as described above in detail.

Engine exhaust constitutes a part of the boiler's combustion air, which not only moderately lowers the temperature inside the boiler combustion chamber and helps reduce the generation of NOx, which is a source of air pollution.
Preheating of the boiler combustion air becomes possible. Furthermore, as mentioned above, combined with the effects of the cooling air and engine cooling water in the national stadium, significant energy savings can be achieved compared to conventional boilers.

Additionally, since a fan for dissipating heat from the engine cooling water is no longer required, the airtightness of the engine housing that houses the power plant improves, which helps reduce noise.

Furthermore, since the output from the power unit can be used to drive various @ equipment and auxiliary equipment for boiler equipment operation, the dependence on external power is reduced, making it less susceptible to power outages. .

In addition, the boiler equipment is equipped with a burner, and the boiler load can be adjusted according to the steam demand.In addition to power generation from the power unit, the system is a combined steam and power supply system that allows arbitrary adjustment of the boiler load and power generation load. can be supplied.

As described above, according to the present invention, it is possible to sufficiently cope with power outages, there is no need for an external commercial power source, and load adjustment of steam and electric power is easy.

This provides an energy-saving, low-noise, low-NOx power co-feed boiler.

[Brief explanation of the drawing]

The drawing shows an example in which the power plant is composed of a water-cooled engine and a generator. ■ is the power plant, ■ is the engine, and ■ is the generator.

Claims (4)

[Claims] (1) A power co-supply type consisting of a power unit that directly connects equipment that utilizes the output of the engine to the engine, and a boiler unit, and in which the exhaust pipe of the engine is connected to the leeward air passage of the burner blower of the boiler unit. boiler. (2) The power co-feeding boiler according to claim 1, wherein the engine exhaust pipe is connected to the boiler can adjacent to the fuel supply nozzle of the burner. (3) A power co-supply boiler according to claim 1, wherein a cooling air outlet in a casing housing the power unit is connected to an air supply port of a burner blower. (4) A heat radiation tank is provided as a cooling device for a water-cooled engine, and heat exchange is performed between a heat medium for cooling the engine and boiler make-up water within the tank. Combined power boiler.