JPH0222019Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a device for removing clogging of a moving particle holding plate in an apparatus having multiple moving layers used for solid-gas separation or solid-gas catalytic reaction. .

[Prior Art] Conventionally, louvers, wire mesh, and perforated plates have been used to hold particles in a cross-flow type moving bed. However, especially when using a wire mesh or perforated plate behind the gas flow in the moving bed, clogging is unavoidable due to the moving particles being in direct contact with the wire mesh or perforated plate and the gas pressure caused by the gas flow. . Furthermore, when using a louver, clogging does not occur, but if the gas flow causes particles to spill onto the rear surface, and if the gas flow is concentrated at one point in the moving bed, a phenomenon in which the particles are blown away is observed. .

In consideration of these phenomena, as shown in Japanese Utility Model Application No. 54-152254, a louver or punching metal 7 is used on the rear surface of the moving bed where the gas flows.
By providing a wire mesh 3 on the outside of the louver or punching metal 7 and creating a structure in which the moving particles do not come into direct contact with the wire mesh, the particles are held by the louver or punching metal, and the powder pressure is not applied to the wire mesh. A support structure was adopted that could avoid clogging and reduce particle blow-through.

Further, in Japanese Utility Model Application Publication No. 53-132944, the catalyst is held by an upstream wire mesh and a downstream wire mesh, and a hammering device 10 is provided on the wire mesh 6 on the upstream side of the catalyst transfer path 5. A denitrification device is described in which dust adhering to a wire mesh 6 is removed by hammering.

[The problem that the idea aims to solve]

In the above-mentioned support structure described in Japanese Utility Model Application Publication No. 54-152254, the wire mesh gradually became clogged after long-term use, which caused problems in operation.

Furthermore, the support device for the filler described in the above-mentioned Japanese Utility Model Publication No. 54-152254 merely shows a structure in which a wire mesh is provided on punched metal, and a hammering machine is used for each of the plurality of moving layers. It does not include the hammering structure provided.

For example, when using a cross-flow type moving bed as a dust collector or reaction device to remove dust and harmful gases such as HCl and SOx contained in the exhaust gas of an incinerator, it is difficult to process large volumes of gas. requires a large gas passage area of the moving layer.
Therefore, in order to make the device compact, a method of arranging a plurality of moving layers is used. To remove blockages in the moving particle retaining plate of multiple moving beds,
When operating a hammering machine, considering the ripple effect of the hammering machine, a plurality of hammering machines are required vertically and horizontally.

Furthermore, in the denitrification device described in Japanese Utility Model Application Publication No. 53-132944, the catalyst is held in a wire mesh, so if the catalyst is held with a uniform particle size, the wire mesh will not be clogged by the catalyst, but it will not be powdered. If particles with irregular particle sizes are used, clogging cannot be eliminated by hammering a wire mesh that is directly exposed to powder pressure. Also,
This method removes dust adhering to the wire mesh on the upstream side, but does not deal with clogging on the downstream side.

Furthermore, the device described in the above-mentioned Japanese Utility Model Application Publication No. 53-132944 has a structure in which moving particles hammer a wire mesh that comes into direct contact with the device, and as in the device of the present invention,
The structure is different from that in which the moving particles are supported by louvers and the moving particles do not come into direct contact with the wire mesh. Further, there is no description of a configuration in which a hammer is provided on the downstream side of each of the plurality of moving beds and these hammers are connected to a drive device via a link mechanism or a rotating cam.

This invention was created in view of the above points, and includes:
To provide a clogging removal device for a moving particle holding plate having a plurality of moving layers, which allows a plurality of hammering machines to be easily operated by a single drive device to easily eliminate clogging of a wire mesh. This is the purpose.

[Means to solve the problem]

In order to achieve the above object, the moving particle retaining plate clogging removal device having a plurality of moving layers of the present invention holds moving particles 2 between the louvers 1 and 1 and allows gas to flow through the louvers, as shown in the drawings. In an apparatus in which a plurality of moving layers 3 are arranged in parallel in the vertical direction, the wire mesh 4 is fixed to the rear surface of the louver at the rear surface of the gas flow so as to be in contact with the louver. A plurality of hammering machines 5 are provided in multiple stages in the horizontal and vertical directions in the vicinity of the wire mesh 4, and a hammering seat 7 on which the hammer head 6 of the hammering machines 5 is struck.
is fixed to a wire mesh 4, and each horizontally arranged hammering machine group is connected by one reciprocating rotary shaft 16, and one end of the reciprocating rotary shaft 16 of each stage of vertically disposed hammering machine groups is connected to each other. are connected by a link mechanism 14 consisting of a link 17 and a link connecting rod 18, and a rotary cam 13 for moving the upper end of the link mechanism 14 up and down and reciprocating a reciprocating rotary shaft 16 is connected to the rotary shaft of one drive device 15. It is characterized by being attached to 19.

When processing large volumes of gas, a large moving bed area is required, so a method of arranging multiple moving beds in parallel is used, and considering the ripple effect of hammering machines, it is necessary to install a large number of hammering machines. There is a need.

The present invention is intended to operate a large number of hammering machines with a single drive device via a link mechanism and a rotating cam. In actual practice, the ripple effect of hammering machines is only effective in a small area, so by installing a large number of these hammering machines, the advantage is that it is easier to eliminate clogging due to the ripple effect of hammering. be.

[Effect]

The hammering machines 5 of each moving layer 3 arranged in the horizontal direction are connected by one reciprocating rotary shaft 16, which are arranged in multiple stages in the vertical direction, and one ends of these plural reciprocating rotary shafts are connected to each other by a link mechanism. 14, and by moving the upper end of the link mechanism up and down, multiple moving layers can be hammered, and for multiple moving layers, the up and down movement of these link mechanisms is a rotation with a shifted rotational phase. The cam 13 is rotated, and one drive device 15 is used to operate the plurality of movable layer hammering machines 5.

That is, the drive device 15 is driven, the plurality of hammers 5 are operated via the rotary cam 13 and the link mechanism 14, and the wire mesh 4 is vibrated. Since the moving particles 2 do not come into direct contact with the wire mesh 4, the wire mesh is effectively vibrated by hammering, and clogging of the wire mesh can be easily eliminated.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 and FIG. 2 show, as an example, the vicinity of a moving bed in a dry moving bed reactor for incinerator exhaust gas. Moving particles 2 made of quicklime particles are held between the louvers 1 and 1, and dust, HCl,
The moving layer 3 is formed by causing the incinerator exhaust gas containing SOx to flow perpendicularly or almost perpendicularly to the louver 1. A wire mesh 4 is fixed to the further rear surface of the louver 1 on the rear surface of the gas flow so as to be in contact with the louver 1. A hammering machine 5 is provided close to the wire mesh 4, and a hammer seat 7 on which a hammer head 6 of the hammering machine 5 is struck is fixed to a wire mesh fixing frame 8. The number of hammer strikes is determined by taking into account the ripple effect of hammer strikes. A plain weave wire mesh may be used as the wire mesh 4, but in order to obtain a more sufficient hammering effect, the wire mesh attached to the louver 1 may be made of spring steel wire or piano wire, as shown in FIGS. 3 and 4. A wire mesh (so-called tie-rod wire mesh) having a long slot-like mesh 11 made of a hard steel round wire 9 and a metal flat wire 10 is fixed in contact with the louver 1 and used. As the hard steel round wire 9, a stainless steel wire with a diameter of, for example, 11 mm is used, and as the metal flat wire 10, a stainless steel wire with a thickness of, for example, 0.3 mm and a width of 3 mm is used. Also, the length of the slotted mesh is 50mm.
degree. Note that instead of the flat metal wire 10, a thin metal wire having a smaller diameter than the hard steel round wire 9 may be used. 16 is a reciprocating rotating shaft.

In this embodiment, the hard steel round wire 9, which is a woven wire, undergoes secondary vibration due to hammering, and since it has a long slot-shaped opening, clogging in the wire mesh is weak, so hammering This has the advantage that the effect is even greater.

As shown in FIGS. 5 to 7, a plurality of moving layers 3 configured as described above are arranged in parallel in the vertical direction, and each hammering machine 5 is connected to the movable layer 3 via a link mechanism 14 and a rotary cam 13. and is connected to the drive device 15. To explain this in detail, the hammering machine 5 of the movable layer 3 arranged in the horizontal direction has its hammer head attached downward to one reciprocating rotary shaft 16, so that the reciprocating rotary shaft 16 reciprocates. This makes it possible to hit the hammer seat 7 with the head of the hammer. A link 17 for reciprocating the reciprocating rotation shaft 16 is provided at one end of the reciprocating rotation shaft 16. The hammering machine 5 of the movable layer 3 arranged in multiple stages in the vertical direction is equipped with the horizontal hammering mechanism described above, and the links 17 at one end of the reciprocating rotary shaft 16 are connected by link connecting rods 18. link mechanism 1
4. By moving the link connecting rod 18 up and down with this link mechanism 14, each hammering machine 5 can be fully moved. In the case of a plurality of moving layers 3, each link connecting rod 18 movable by a link mechanism 14 is moved up and down by rotating a rotating cam 13, and each rotating cam 13 is provided on one rotating shaft 19. .
The rotating shaft 19 is rotated in one direction by the drive device 15. By shifting the rotational phase of the rotating cam 13, the plurality of moving layers 3 can be sequentially hammered. 20 is a bearing.

Further, as shown in FIG. 8, the hammer head 6 of the hammer driver 5
is pivotally supported by the elongated hole 22 at the joint with the hammer shaft 21, so that the hammer head 6 reliably transmits the impact force to the hammer seat 7 by utilizing penetrating force. Ru.

[Effect of idea]

As explained above, in the present invention, a plurality of hammering machines installed on a wire mesh fixed in contact with the rear surface of the louver are connected to a drive device via a link mechanism and a rotating cam. It is extremely unlikely that particles will spill over or blow through the rear surface of multiple moving layers due to the flow, and if a blockage due to fine powder occurs, it can be easily removed by hammering with a simple mechanism. . Further, as an effect of hammering, when all the particles in the moving layer are extracted, the remaining particles are removed by the louver, and the hammering also serves to clean the moving layer.

Furthermore, if there is a space between the louver and the wire mesh, this space will be filled with blow-through particles, which will eventually apply particle powder pressure to the wire mesh.
Since the wire mesh is placed in contact with the louver,
This kind of thing can be prevented.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing an example of the main part of the clogging removal structure of the moving particle retaining plate of the moving bed in the present invention, Fig. 2 is a right side view of the same, and Fig. 3 is an illustration surrounded by a chain line circle in Fig. 2. Figure 4 is an enlarged view of the same side view.
FIG. 5 is an explanatory front view showing an embodiment of the clog removal device for a moving particle holding plate having a plurality of moving layers according to the present invention, FIG. 6 is an explanatory side view of the same, FIG. 7 is an explanatory plan view of the same, and FIG. FIG. 8 is an explanatory diagram showing details of the hammering machine. 1... Louver, 2... Moving particles, 3... Moving layer, 4... Wire mesh, 5... Hammer hammer, 6... Hammer head,
7... Hammer seat, 8... Wire mesh fixing frame, 9... Hard steel round wire, 10... Metal flat wire, 11... Slot-shaped mesh, 13... Rotating cam, 14... Link mechanism,
15... Drive device, 16... Reciprocating rotating shaft, 17
... Link, 18 ... Link connecting rod, 19 ... Rotating shaft, 20 ... Bearing, 21 ... Hammering shaft, 22 ...
Long hole.

Claims (1)

[Scope of utility model registration request] In an apparatus in which moving particles 2 are held between the louvers 1 and 1, and a plurality of moving layers 3 are arranged in parallel in the vertical direction so that gas flows perpendicularly to the louvers, the louvers on the rear surface of the gas flow A wire mesh 4 is fixed to the rear surface so as to be in contact with the louver, and a plurality of hammers 5 are provided in multiple stages in the horizontal and vertical directions in proximity to the wire mesh 4 of each moving layer. A hammer seat 7 for striking is fixed to a wire mesh 4, and each group of hammering machines arranged laterally is connected to one reciprocating rotary shaft 1.
6, and one ends of the reciprocating rotary shafts 16 of the hammering machine groups of each stage arranged in the vertical direction are connected to each other by a link mechanism 14 consisting of a link 17 and a link connecting rod 18, and the upper end of the link mechanism 14 is The rotary cam 13 for reciprocating the reciprocating rotary shaft 16 by moving it up and down is
A clogging removal device for a moving particle holding plate having a plurality of moving layers, characterized in that the device is attached to a rotating shaft 19 of one drive device 15.