JPS5932860Y2 - Multifunctional exhaust gas reduction chamber - Google Patents

Description

[Detailed description of the invention] The present invention relates to a multi-functional configuration of an exhaust gas attenuation chamber. Specifically, in contrast to the conventional technology that adsorbs dust in the exhaust gas while cooling the exhaust gas by spraying water to reduce its temperature, the present invention provides an exhaust gas attenuation chamber. The present invention relates to the structure of a multifunctional exhaust gas attenuation chamber configured to simultaneously dry wastewater and generate hot water using the heat of the exhaust gas, thereby increasing the temperature reduction effect of exhaust gas.

The exhaust gas emitted from incinerators for municipal waste, etc. contains a lot of dust, and conventionally this has been adsorbed and removed by passing it through a cooling shower room (or spray room), while at the same time reducing the temperature of the exhaust gas. I'm painting.

However, the exhaust gas still has high heat, which poses problems such as having an adverse effect on subsequent processing using an electrostatic precipitator or the like, or releasing the exhaust gas unused and not recovering the heat.

For this reason, several proposals regarding heat recovery have been attempted, but none have been fully satisfactory.

The inventors of the present invention focused on the fact that a large amount of sewage is generated even in an incinerator, and it is difficult to treat it.The inventors of the present invention aimed to simultaneously treat sewage and recover heat, and extend the cooling life of the temperature-reducing shower room (or spray room). After various studies with the main purpose of creating a musical instrument, the present invention was finally completed.

That is, the multifunctional exhaust gas reduction chamber according to the present invention is itself composed of a large-volume heat exchange chamber, and uses the high heat of the ceiling and side walls of the heat exchange chamber to dry wastewater and generate hot water. It looks like this.

That is, the wall surface of the heat exchange chamber is used as a heat exchange wall, thereby making it possible to enjoy the benefits of continuous drying of sewage generated in the incinerator and the acquisition of hot water.

In addition, the exhaust gas retention mechanism in the heat exchange room, and the water sprinkling in the same room (
There are no specific restrictions on each individual component, such as the sludge or spray mechanism, the path configuration for muddy water and cold water flowing along the walls of the heat exchange chamber, the path configuration for the sludge and hot water generated from these, and the sludge treatment line. The present invention is satisfied if these elements are effectively combined.

Therefore, the embodiments described below are merely illustrative of typical embodiments, and modifications and implementations in accordance with the spirit of the above and below descriptions belong to the technical scope of the present invention.

FIG. 1 is a perspective view illustrating the exhaust gas attenuation chamber of the present invention, which is installed in a flue that guides exhaust gas from a combustion chamber to a chimney.

That is, the main body of the exhaust gas attenuation chamber of the present invention is composed of a large-volume heat exchange chamber 1 in which exhaust gas is temporarily retained, and in the upper part of the heat exchange chamber 1 there is a passage 2 for guiding sludge conveyed from the sewage treatment equipment. In addition, the heat exchange chamber 1 is provided with a chute (see FIG. 2) for dropping the sludge.

Then, the wastewater conveyed to the wastewater passage 2 is transferred to the chute side by a conveyor 4 provided with a scraping plate 3, and is transferred to the heat exchange chamber 1.
It is dehydrated and dried by the high temperature of the wall surface.

In addition, a cooling water passage for cooling the heat exchange chamber 1 is provided in the side wall 6 of the heat exchange chamber 1 to exchange heat between the high-temperature exhaust gas and the cooling water, to lower the temperature of the exhaust gas, and to cool the exhaust gas. It is also possible to use hot water by raising the temperature of the water.

A washing spray nozzle 5 adsorbs and removes hydrogen chloride and dust in the exhaust gas flowing into the exhaust gas passage 1.

Figures 2 and 3 are sectional views explaining the exhaust gas attenuation chamber of the present invention in detail and explaining the many functions of the exhaust gas attenuation chamber. 3 is a sectional view taken along the line III--III in FIG. 1.

That is, the first function of the device of the present invention is to dry the wastewater discharged from the wastewater treatment facility, and the procedure is as follows.

First, sewage is carried into the sewage passage 2 from the sewage supply header 11, and then the sewage is transferred little by little to the sludge thin port 13 side by driving the conveyor 4.

At this time, the wastewater passage 2 is heated by the radiant heat of the exhaust gas, so that the wastewater is gradually dehydrated and dried.

The dewatered sewage (hereinafter the dried sludge will be referred to as sludge) is guided to a sales conveyor (not shown) through a chute 9.

In this way, the present invention uses the exhaust gas discharged from the incinerator to dry the sludge.

Incidentally, the reason why the sewage passage 2 is inclined toward the sludge falling sun 13 and the depth of the sewage is gradually made shallow is to shorten the drying time of the sewage and also to prevent the sewage carried into the sewage passage 2 from being transferred by the conveyor 4. This is to prevent it from flowing into the shoe 1-9 without being received.

Further, the discharge port 10 of the chute 9 is provided in the heat exchange chamber 1 so as to carry out the dust together with the dust in the flue. There is no problem if you collect it.

Next, the second function of the present invention is to reduce the temperature of the exhaust gas flowing in from the flue and to utilize residual heat from the exhaust gas, and the temperature reduction means is performed by a cooling water passage provided in the side wall 6 of the heat exchange chamber 1.

That is, the cooling water passage is formed by appropriately disposing a partition plate 12 between the side wall 6 and the heat exchange chamber 1, as shown in FIG. The cooling water is sequentially raised to the hot water outlet 8 side through the cooling water passage 15 formed by the cooling water, and the heat of the heat exchange chamber wall surface 16 heated by the exhaust gas is exchanged with the cooling water.

Therefore, the exhaust gas temporarily remains in the heat exchange chamber 1, or conversely, the temperature of the exhaust gas is reduced.

In this way, the cooling water passage 15 provided inside the side wall 6 is not formed only on one side of the heat exchange chamber 1, but on both side walls 6.
Since the exhaust gas can be installed inside the exhaust gas, the temperature reduction effect of the exhaust gas is extremely high.

In addition, the cooling water passage 15 is connected to the wall surfaces 6 a and 6 b on the flue connection side.
It may also be provided in order to further enhance the temperature reduction effect.

Note that the shape of the cooling water passage 15 is not limited to that shown in the drawings, and may be formed, for example, so that a passage that is continuous in the horizontal direction is continuous in the vertical direction.

The hot water heat-exchanged in this way is supplied to a hot water tank or the like.

FIG. 4 is a longitudinal sectional view of the heat exchange chamber 1, illustrating the smoke cleaning spray nozzle 5 installed in parallel with the waste water passage 2,
Adsorbs and removes dust, etc. in exhaust gas, and lowers the temperature of exhaust gas if necessary.

That is, the temperature of the reduced temperature chamber of the present invention can be sufficiently reduced by the cooling water passage 15 described above, but especially in urban incinerators, the temperature of the exhaust gas and the amount of dust contained in the exhaust gas also change due to changes in the combustion materials. It helps reduce the temperature of the exhaust gas while cleaning the dust in advance.

The amount of smoke cleaning water sprayed from the smoke cleaning spray nozzle 5 may be extremely small, and it is desirable that the amount of water be such that it does not accumulate as dust at the bottom of the flue.

Since the present invention is configured as described above, the following effects can be obtained.

■ The radiant heat of the attenuated chamber allows for sufficient drying treatment without the need for a separate sludge treatment device.

■ Since the cooling water passage is provided on the side wall of the exhaust gas passage, the effect of reducing the temperature of the exhaust gas is extremely high, and there is no need to rely on showers to reduce the temperature as in the past.

■ For the same reason as above, hot water can be obtained by heat exchange with exhaust gas.

[Brief explanation of the drawing]

Figure 1 is a perspective view illustrating the exhaust gas attenuation chamber of the present invention;
The figure is a sectional view taken along the line II-II in Fig. 1, Fig. 3 is a sectional view taken along the line III-III in Fig. 1, and Fig. 4 is a sectional view taken along the line ■■-■V in Fig. 1.
FIG. 1... Exhaust gas passage, 2... Sewage passage,
3... Conveyor, 4... Scraping board, 5...
...Smoke cleaning spray nozzle, 6...Side wall,
7...Cooling water inlet, 8...Hot water outlet,
9... Chute, 11... Sewage header, 12... Partition plate, 15... Cooling water passage.

Claims (1)

[Scope of utility model registration request] The temperature reduction chamber reduces the temperature of high-temperature exhaust gas, and the temperature reduction chamber itself is composed of a large-volume heat exchange chamber in which the exhaust gas is temporarily retained, and a sewage passage is formed in the upper part of the heat exchange chamber, and the waste water passes through the passage. A multifunctional exhaust gas reduction chamber characterized in that the dried sludge is allowed to fall along the side wall of the heat exchange chamber, and a passage for water for cooling the heat exchange chamber is formed in the side wall of the heat exchange chamber.