JPH0523204Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a device for removing mist from gas, particularly in a wet flue gas desulfurization device, which removes mist contained in the exhaust gas after performing dust removal or desulfurization. The present invention relates to a demister element assembly structure suitable for removing mist.

[Conventional technology]

Conventionally, for example, in wet flue gas desulfurization equipment, after removing the dust and sulfur oxides contained in the combustion flue gas, a demister is installed to remove the mist contained in the flue gas. Exhaust gas was being discharged outside the dust removal tower and desulfurization tower. However, in this conventional demister, as an example of how to attach the demister element (hereinafter abbreviated as element), as shown in FIG.
The support bracket 4, which also serves as an attachment and reinforcement for the element 3, is used as a support beam (support beam) for the element.
It is placed on top of the upper flange portion 7 of No. 2 and fixed. In addition, in order to prevent the element 3 from floating or vibrating due to the flow of the exhaust gas 6, the element 3 is attached to the lower side of the element 3 by a fixing metal fitting 5 via a support metal fitting 4 provided on the element 3. It is fixed to the support beam 2 of the element by working upwards. Incidentally, FIG. 5 is a sectional view taken along the line BB in FIG. 4, and is a diagram showing the structure of the support beam 2 of the element and the attachment portion of the element 3. In such a conventional demister element assembly structure, element 3
As shown in FIG. 4, the ends of the element form a lattice-shaped frame 9 as shown in FIG. However, the flow of exhaust gas 6 containing mist is short-circuited in the gap 10 between the elements 3, resulting in a reduction in mist removal efficiency. Also, the 6th
As shown in the figure, the upper demister element 3
When attaching and fixing the element to the support beam 2 of the element, attach the lower part of the element 3 that has already been fixed, or the element 3 that is facing upwards from the work scaffolding.
The work efficiency is extremely poor because the work of fixing the element 3 on the lower stage is extremely poor, and the work of attaching the element 3 on the upper stage is done by climbing on top of the element 3 set on the lower stage. If 3 is not sufficiently protected, the lower element 3 will be greatly deformed by the worker's own weight, and repair work will be required. Furthermore, when fixing the upper element 3, it is necessary to provide work scaffolding and safety nets inside the tower. Therefore, there were problems such as uneconomical work due to scaffolding and safety, and danger due to upward work. This was extremely inconvenient as the same problem as mentioned above occurred during maintenance, inspection and repair of the demister element.

[Problem that the invention attempts to solve]

As described above, in the conventional demister element assembly structure, (1) the mist contained in the exhaust gas is short-circuited through the gaps created between the elements, resulting in a decrease in mist removal efficiency. (2) The workability of mounting and dismounting the element is extremely poor because the work requires upward facing work, which is accompanied by danger. (3) Uneconomical requirements such as scaffolding for work such as mounting and dismounting elements, protection of lower elements, and ensuring work safety. (4) It takes a long time to install and remove the element and to maintain and inspect the element. There are drawbacks such as.

The purpose of the present invention is to eliminate the above-mentioned drawbacks of the conventional technology, completely prevent the mist in the exhaust gas from short-circuiting, greatly improve the mist removal efficiency, and minimize the material used to construct the element mounting part. Tonashi,
To provide a demister element assembly structure in which the strength of an element mounting part is sufficiently ensured, and the element can be mounted and removed easily, quickly, safely, and economically.

[Means for solving problems]

In short, in the present invention, the demister element is placed between the upper flange and the lower flange of a support beam of the element, for example, a support beam having an I-shaped cross section, and gas is A seal plate is provided to completely shield the mist in the gas from short-circuiting, and this seal plate is fixed to the upper flange of the support beam of the element to prevent the mist in the gas from short-circuiting from the gap between the elements. This is a demister element assembly structure that is completely airtightly fixed at the upper flange of the beam.

In the demister element assembly structure of the present invention, the element airtightly fixes the seal plate of the element at the upper flange of a support beam such as a support beam. Since it does not protrude above the top surface of the support beam and is always placed below the top surface of the support beam, the installation and removal work is safe and easy downward work using the support beam as a foothold, resulting in extremely good workability. Since the scaffold for work can freely utilize the upper surface of the support beam, the installation and removal of elements and maintenance and inspection can be carried out extremely efficiently and economically.

〔Example〕

An embodiment of the present invention will be described below in more detail based on the drawings. In the figures, the same reference numerals indicate parts or parts having the same function or performance.

FIG. 1 is a perspective view showing the configuration of a demister element assembly structure that is an example of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG. 1. As shown in the figure,
The element 3 is housed in the web part between the upper flange part 7 and the lower flange part 8 of the support beam 2 which is a support beam of the demister element 3,
At both ends of the element 3, there are element support fittings for attaching the element 3 to the support beam 2,
Seal plate 11 that seals mist in gas
is provided. This demister element can be fixed by attaching the element 3 to the support beam 2 of the element 3 in advance and installing it inside the desulfurization tower 1, or by first installing the support beam 2 inside the desulfurization tower 1 and then fixing the element 3 to the support beam 2 of the element 3. A method may also be used in which the support fitting/seal plate 11 and the support beam 2 are aligned and the element 3 is fixed by the fixing fitting 5.

The demister element structure assembled in this way has a seal plate 11 as shown in FIG.
By providing this, all the mist in the gas passes through the element 3, making it possible to remove the mist with high efficiency, improving the mist removal performance of the desulfurization tower 1, so the height of the desulfurization tower 1 can be lowered. This makes it possible to reduce equipment costs.

In addition, all installation and removal work of the demister element 3 can be done by using the support beam 2 of the element 3 as a foothold and working downwards from the top, making it easy to install and replace the element with good work efficiency and safety. . Furthermore, since workers can freely pass over the upper flange portion 7 of the support beam 2 of the element 3 during repair inspection, there is almost no fear of deformation or damage to the element 3, improving the reliability of repair inspection work. do. Furthermore, when assembling, replacing, or repairing and inspecting the lower demister element assembly structure shown in Fig. 3, the work can be carried out freely downward using the upper part of the support beam 2 as a scaffold, so there is no need to provide a separate scaffold. Assembling work can be performed safely and quickly, and maintenance inspections and repairs can be performed economically with good work efficiency.

[Effect of idea]

As explained in detail above, the demister element assembly structure according to the present invention can almost completely prevent short-circuiting of mist in gas by the seal plate, and can significantly improve mist removal efficiency. Therefore, for example, the mist removal performance in the desulfurization tower is improved, and the height of the desulfurization tower can therefore be lowered, making it possible to reduce equipment costs. In addition, the element support beam is used for mounting and dismounting the element, maintenance inspection, and repair work. For example, using the upper part of a support beam as a foothold, the work can be carried out freely, downwards, without deforming or damaging the element, easily, safely, and economically, and has extremely great practical value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the configuration of a demister element assembly structure shown in an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is a demister element assembly structure shown in FIG. 1. FIG. 4 is a perspective view showing the configuration of a conventional demister element assembly structure; FIG. 5 is a sectional view taken along line B-B in FIG. 4;
The figure is an explanatory diagram showing the passage state of exhaust gas containing mist in the demister element assembly structure of FIG. 4. DESCRIPTION OF SYMBOLS 1... Desulfurization tower, 2... Support beam, 3... Element, 4... Support metal fittings, 5... Fixing metal fittings, 6...
...Exhaust gas, 7...Upper flange, 8...Lower flange, 9...Lattice frame, 10...Gap, 1
1... Seal plate.

Claims (1)

[Claims for Utility Model Registration] 1. A demister element assembly structure in which the demister element is attached to a support beam that supports and fixes one or more demister elements in a substantially horizontal direction to remove mist contained in gas. A seal plate is installed at both ends or around the demister element to prevent short-circuiting of the gas containing mist and has an attachment part for fixing to the support beam, and the attachment part of the seal plate is attached to the upper surface of the demister element. , or so that the top surface of the demister element is located below the mounting part of the seal plate, so that the mounting part of the seal plate of the demister element is located at the same height as the support beam. A demister element assembly structure characterized in that the upper surface of the demister element is supported and fixed to a support and fixing part of the demister element provided in the support beam in such a structure that the upper surface of the demister element does not protrude beyond the upper surface of the support beam. 2. The support beam of the demister element is an I-shaped or T-shaped support beam, and the seal plate provided on the demister element has a flange portion that can be supported and fixed on the upper surface of the support beam. A demister element assembly structure according to claim 1, characterized in that the demister element assembly structure comprises: 3 The cross section of the demister element is I-shaped or T-shaped.
Claims for registration of a utility model, characterized in that the demister element is supported and fixed to the support beam having an I-shaped cross section or a T-shaped cross section within a height range of the support beam. The demister element assembly structure according to item 1 or 2.