JP2003065502A - System of treating steam blowing out of boiler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide equipment eliminating white smoke, pollution and noise at the time of blowing out. SOLUTION: In a system of treating steam blowing out of a boiler, a silencer 6 is installed in the piping for outdoor ejection 5 on the front flow side of a turbine, so as to allow the out-blowing steam that is generated by a boiler 1 to pass through the silencer 6. A tank 7 with the larger diameter than that of the piping for outdoor ejection 5 is installed, and a water atomizer 9 is provided at the upper part of the tank 7, so as to introduce the out-blowing steam that has passed through the silencer 6 into the lower part of the tank 7. Then, the steam blowing out is ejected outdoors from the upper part of the tank 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blowout of a boiler, and more particularly to a technique for treating steam in the blowout.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional processing mode at the time of blowing out. Before installing the piping from the boiler to the turbine and sending steam to the turbine, work to remove the dirt by sending steam to the piping and discharging it outside so that dirt inside the piping does not adversely affect the turbine. However, this work is called blowing out.

In FIG. 2, the steam generated in the waste heat recovery boiler 1 during normal operation is sent to the high-pressure steam reservoir 3 via the main steam pipe 2, and then is generated by the turbine generator 4.

When the main steam pipe 2 is constructed or modified,
There is dirt (dust or rust) in the pipe. Therefore,
Before the steam is sent to the turbine, the temporary pipe 5 is installed immediately before the turbine to allow the steam to flow, so that the work for removing the dirt in the pipe, that is, the blowing out has been conventionally performed.

[0005]

The steam at the time of blowing out contains the dirt in the piping, and when discharged into the atmosphere, it condenses to form white smoke and also produces noise. The equipment and equipment used will be installed in a site away from the house,
Since blowing out does not temporarily release harmful substances, it has conventionally emitted steam to the atmosphere.

[0006] In recent years, when a refuse incineration facility is installed near a residential area, or in a downtown area or a commercial area,
Dirty steam and noise can adversely affect the surrounding environment. If a large amount of white smoke is suddenly emitted, it is not good for the surrounding residents mentally, and the equipment and building will be contaminated in a small site. Further, although a silencer is provided to reduce the noise to a predetermined value level or less, the lower the peculiar noise is, the better.

An object of the present invention is to provide a facility which eliminates white smoke, pollution and noise at the time of blowing out.

[0008]

To solve the above problems, the present invention mainly adopts the following configurations. A silencer is installed in the outdoor discharge pipe on the upstream side of the turbine, the blowing-out steam generated in the boiler is passed through the silencer, a tank having a diameter larger than that of the outdoor discharge pipe is installed, and water spray is sprayed on the upper part of the tank. A blowing-out steam treatment system for a boiler, which is provided with a device to introduce the blowing-out steam that has passed through the silencer into the lower part of the tank and condense it.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A blowout-out steam treatment system for a boiler according to an embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a blowing-out steam treatment system according to an embodiment of the present invention, and shows a configuration in which a silencer 6, a cooling tank 7, a water spray device 9 and the like at the time of blowing-out are installed.

The blowing-out steam generated in the boiler 1 advances in the pipe while removing dirt in the pipe from the boiler 1 to the branch point of the temporary pipe 5. First, after the noise is passed through the silencer 6 after the branch point of the temporary pipe 5, steam enters from the lower part of the cooling tank 7 and cooling water is sprayed from the water spraying device 9 provided on the upper part of the cooling tank 7, and the inside of the cooling tank 7 Most of the steam is condensed by water. Further, a filler 8 is provided in the cooling tank to promote contact between steam and water.

Next, the operation and action of this embodiment will be described below. First, looking at the cooling water-drainage system, the water supplied from the cooling water pipe is discharged from the spray nozzle of the water spraying device 9 and falls, while coming into contact with the steam in the cooling tank 7 and exchanging heat. The condensed water and the spray water after the heat exchange are temporarily stored in the lower part of the cooling tank 7 and discharged from the drain pipe.

Looking at the steam system, after the noise is first passed through the silencer 6 to reduce noise, the steam that has entered from the lower portion of the cooling tank 7 rises while passing through the filler 8 in the cooling tank 7 and then falls. It exchanges heat with water and reduces noise. Here, most of the vapor condenses, but the vapor that does not condense exits from the upper part of the cooling tank.

As described above, according to the embodiment of the present invention, after the silencer 6 is provided on the temporary pipe 5 for discharging steam to the outside to reduce noise, the water spray device 9 and the sealed pipe having a diameter larger than the diameter of the pipe are sealed. By installing a cooling tank, spraying a large amount of water on the steam, and contact cooling to condense most of the steam, as well as cleaning the pollutants and discharging the steam to the outdoors,
It has a configuration that eliminates pollutants, prevents the generation of white smoke, prevents the discharge of pollutants to the outside, and further reduces noise.

By adopting this structure, after noise is reduced by the silencer 6, when the blowing-out steam enters the closed cooling tank 7, the tank diameter is larger than the pipe diameter, the steam flow velocity decreases, and the water spray installed is installed. When a large amount of water from the device 9 is contacted and heat is exchanged, most of the steam is condensed, so that the generation of white smoke is prevented and the noise is reduced. The sprayed water is not just a cleaning of pollutants, but it condenses and removes the vapor itself that carries the pollutants in the closed tank, so the pollutants are collected at the bottom of the tank together with the water, and the equipment and building on the premises. It does not pollute the house.

In the embodiment shown in FIG. 1, a configuration example in which the water spray device is provided above the cooling tank is shown, but the present invention is not limited to this, and the water spray is provided on the pipe existing upstream of the tank having a diameter larger than the pipe diameter. An embodiment of the present invention is also a configuration example in which by installing the device, heat exchange between water and steam is performed on the pipe, and the steam flow velocity is reduced in a tank having a large diameter to further promote heat exchange. Furthermore, the present invention is not limited to the above-described embodiment, but can be applied to all boilers that blow out.

[0016]

EFFECTS OF THE INVENTION According to the present invention, generation of white smoke at the time of blowing out and emission of polluted steam to the outside of the facility are eliminated, and noise is not emitted to the outside of the system.

Further, by using the sewage treatment apparatus, it is possible to minimize the influence of the dirt contained in the steam on the surrounding environment.

[Brief description of drawings]

FIG. 1 is a diagram showing a blowing-out steam treatment system according to an embodiment of the present invention, showing a configuration in which a silencer 6, a cooling tank 7, a water spray device 9 and the like are installed at the time of blowing-out.

FIG. 2 is a diagram showing a blowing-out steam treatment system in the prior art.

[Explanation of symbols]

1 boiler 2 Main steam piping 3 High-pressure steam reservoir 4 turbine generator 5 Temporary piping 6 silencer 7 Cooling tank 8 Filling material 9 Water spray device

Claims (2)

[Claims] 1. A silencer is installed in a pipe for outdoor discharge on the upstream side of a turbine, blowing out steam generated in a boiler is passed through the silencer, and a tank having a diameter larger than that of the pipe for outdoor discharge is installed. A blowing-out steam treatment system for a boiler, wherein a water spraying device is provided on the upper part of the boiler to introduce the blowing-out steam that has passed through the silencer into the lower part of the tank to condense it. 2. The boiler blow-out steam treatment system according to claim 1, wherein a filler is provided between an inlet for introducing the blow-out steam to a lower portion of the tank and the water spray device. Boiler blow-out steam treatment system.