JPH03281945A - System and device adopting energy - Google Patents

Abstract

PURPOSE:To improve energy efficiency by operating a gas turbine while burning gas for combustion at a high temperature, thereby driving a generator etc., and mixing exhaust gas in a gas turbine with atmosphere while carrying out drying step in painting, etc. CONSTITUTION:Air is boosted by an air compressor 1a and introduced into a combustion furnace. On the other hand, fuel butane (liquid) is evaporated by the steam generated from an evaporator 2, and fed to the combustion furnace 1b. The butane and the air are burnt in the combustion furnace 1b, and fed to a gas turbine 1c as a high temperature gas 1j. The rotational energy generated in the gas turbine 1c causes the rotation of a generator 1d to obtain electricity. The high temperature gas introduced into the gas turbine 1c is recovered as a hot gas 5 in the exhaust gas. Air is intaken by an air blower 3, mixed with the hot gas 5 in the exhaust gas by a mixing device 5, and fed to a drying device in the next step as a drying gas 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an energy utilization system and device in a can factory.

[Prior art]

Conventionally, to dry paint applied to the inner and outer surfaces of a can, city gas, LPG, or kerosene is installed in a drying device, burned with a large amount of air in a special burner, and dried with the generated combustion gas. There is. This drying process removes solvents and moisture from the paint, and requires a moderate temperature, which is carefully controlled.

[Problem to be solved by the invention]

According to the conventional method, in order to supply the drying energy for the drying device, a dedicated burner attached to the drying device is used, and combustion gas and a large amount of air (the amount of air required for complete combustion) is used. A large excess of air) was supplied and combusted to produce drying gas at a predetermined temperature.

The temperature required for drying can bodies in can factories, particularly for drying primer coating and printing on can bodies, is about 100 to 200°C.

The upper temperature limit depends on the type of resin that forms the primer and printing ink, but high temperatures of 200°C or higher can cause resin deterioration and
This is undesirable as it may cause deterioration and decomposition.Therefore, in conventional technology, it is natural to create dry gas at a temperature of 100 to 200°C, and to unconditionally change a high energy level gas to a low energy level gas. No attention was paid to the energy loss caused by this.

[Means to solve the problem]

Therefore, the present inventor proposed a temperature of approximately 900 to 1300°C and
This project proposes a system that effectively utilizes the two energy disparities below ℃.

That is, one aspect of the present invention is to burn combustion gas at high temperature to operate a gas turbine, thereby driving a generator or other machinery, and on the other hand, to mix atmospheric gas with the exhaust gas of the gas turbine. Washing the inside and outside of can bodies in can factories,
The present invention relates to an energy utilization system in a can manufacturing factory, which is characterized by drying in processes such as painting.

Another aspect of the present invention provides a gas turbine, a means for transferring the exhaust gas of the gas turbine to a mixing device with the atmosphere, a device for mixing the exhaust gas with the atmosphere, and a drying gas obtained by the mixing device. means for transferring cans to a drying device in a can factory;
means for detecting the temperature of the drying gas obtained by the mixing device to control the amount of heat supplied; the drying device for the can; means for transmitting the rotation of the gas turbine to the rotating shaft of the generator; The present invention relates to a power generation and drying device for a can manufacturing factory.

If the system of the present invention is operated using the amount of fuel conventionally used for drying can bodies in a can manufacturing factory, not only the energy required for drying the can manufacturing factory but also the power etc. required in the can manufacturing factory will be reduced. It can supply 80 to 90% of all energy sources, achieving an amazing energy saving effect. This means that can manufacturing factories that conventionally used 1000 KWH of energy per hour for drying can now use the same amount of fuel as their energy source by adopting the system and equipment of the present invention. Therefore, it is possible to obtain energy equivalent to 1,800 to 1,900 KWH per hour.

〔Example〕

One embodiment of the present invention will be explained with reference to FIG. 1a
Air is pressurized from atmospheric pressure to 10atg using the air compressor 1b, and then introduced into the combustion furnace 1b. On the other hand, the fuel butane (liquid) is evaporated into steam in the evaporator 2 and supplied to the combustion furnace 1b as a 15 atg gas. Butane and air are combusted in the combustion furnace 1b, and are supplied to the gas turbine 1c as high-temperature gas 1j at about 950°C.

The rotational energy generated by this gas turbine rotates the generator 1d and extracts electricity.The high temperature gas that enters the gas turbine 61c is approximately 500°C as the middle temperature gas from the exhaust gas of 5.
It is taken out.

Atmospheric air is taken in by an air blower 3, mixed with intermediate temperature gas 5 from the gas turbine exhaust by a mixing device 4, and supplied as 6 to a drying device in the next step.

This mixed gas is controlled at a temperature of 150°C to 200°C and becomes a dry gas. The control method measures the temperature of the dry gas at 6 and adjusts the amount of fuel at 2a. Note that the control method is not limited to this. Of course, another method of control may be used, such as keeping the amount of fuel in 2a constant and adjusting the amount of air in 3a to produce dry gas. The selection of this control method is determined by the fluctuation range of the drying load, but in this embodiment, since the operating condition is such that the fluctuation of the drying load is small, the former method is selected. Naturally, it is possible to arbitrarily select whether the control method is manual or automatic.

In addition, by exchanging heat with the supply atmosphere such as 1g and 3a with the exhaust gas discharged from the drying device, it is possible to improve the energy efficiency of the -layer.

〔effect〕

According to the present invention, it was possible to achieve energy efficiency nearly twice that of the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a flow sheet of this embodiment. 1a: Air compressor 1b = Combustion furnace 1c Gas turbine 1d: Generator 1e: Shaft connecting 1a and 10 1f: Shaft connecting 1c and 1d 1g: Air (atmosphere) 1h: Compressed air flow 1j: High temperature Gas flow 2: Evaporator 2a: Fuel butane flow 2b: Steam flow 3: Air supply blower
38: Air flow 4: Mixing device 5:
Exhaust medium temperature gas flow 6: Dry gas diagram

Claims (1)

[Claims] 1. Combustion gas is combusted at high temperature to operate a gas turbine, thereby driving a generator or other machinery, and on the other hand, can manufacturing by mixing the exhaust gas of the gas turbine with atmospheric air. An energy utilization system in a can manufacturing factory characterized by drying the inside and outside surfaces of can bodies in the factory. 2. A gas turbine, a means for transferring the exhaust gas of the gas turbine to a mixing device with the atmosphere, a device for mixing the exhaust gas with the atmosphere, and a device for drying cans in a can manufacturing factory using the drying gas obtained by the mixing device. a means for detecting the temperature of the drying gas obtained by the mixing device to control the amount of heat supplied; a device for drying the can; a means for transmitting the rotation of the gas turbine to the rotating shaft of the generator. , and a power generation and drying device for a can manufacturing factory.