JPS6013979B2 - electrostatic precipitator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrical collector for the waste gas of a melting furnace, in particular a glass tank furnace, with a suction bend and an additional control device connected in series with the cubelator. Related to dust equipment.

In melting furnaces a relatively small gauge pressure must be maintained with a high degree of accuracy, which in glass tank furnaces is, for example, 0.
．． 1 to 0.2 intracostal water pressure (WS).

The pressure is maintained with a high degree of accuracy using a control pupil in the area of the bar cubelator. As an additional control device, it is known to place an iron plate above the recubulator which can be moved during operation to change the resistance at the outlet of the recubulator. Said iron plate is introduced in particular in the event of a failure in an electrostatic precipitator or the like when the suction bend, which is arranged on the barbed cubelator during normal operation, is swiveled. If the tube bend is removed, a disturbing pressure change occurs in the melting furnace, which pressure change cannot be adjusted quickly enough by the control device arranged in the region of the recubator.

In this case, it is necessary to move the iron plate by hand in order to quickly control it. The operation of griddles requires on the one hand the additional labor of at least one person, and on the other hand a certain level of professional skill.

This work requires trained personnel, not untrained personnel. The aim of the invention is to replace this manual, skilled work process by a new additional control device. The purpose of this is to provide a glass furnace, a recuberator to which waste gas from the glass furnace is supplied, an electrostatic precipitator to purify the supplied waste gas, and an electrostatic precipitator to purify the waste gas sent from the recubulator. One open □ end is arranged close to the cut of the waste gas outlet of the recubulator, the other open end is connected to an electrostatic precipitator, and the cut of the one closing machine The opening of the suction bent pipe provided so as to be able to freely turn and the exhaust gas passage from one end of the suction bent pipe to the cut end can be adjusted by moving the suction bend pipe toward each other within the passage. They are pivotably connected in the same plane so that when they are pivoted toward each other, an orifice is formed in the center of the waste gas passage.
This is achieved by an electrostatic precipitator characterized by comprising a pair of heat-resistant plates having recesses in opposing portions.

This type of control plate can be activated automatically by pivoting out or reintroducing the suction bend, eliminating the need for manual intervention by the operator and achieving a very high degree of precision. be done. Although it is also conceivable to arrange the control plate movably on the frame, it is advantageous to arrange the control plate so that it can pivot.

It has proven advantageous to construct the control plate in two parts.

In this case, the control plate halves are symmetrical with respect to the dividing plane and the orifice is located directly adjacent between them, resulting in a constant waste flow even at the most intense squeezing. Gas flow is possible. The slit between the tip of the cuberator on the one hand and the suction bend on the other hand is made as small as possible and in this area the intruding air (Fal) is
In order to keep the inflow of schluH as low as possible, it is better to arrange both halves of both control plates on the same plane, that is, so that the heights of both plates do not differ from each other. It's advantageous.

It is also conceivable for the control plate to be made from a heat-resistant material without hollow parts.

However, it was observed that a considerable amount of powder particles and other deposits were deposited on the control plate formed without a hollow portion. Accordingly, the present invention proposes that the control plate and/or both semicircular bodies be configured to be water-cooled. It has been found that intense cooling of the control plate ``surprisingly works to prevent the formation of interfering particles and other deposits. Preferably, the water supply of the control plate is regulated, and it has been found advantageous to first of all pass the cooling water through the zone of the plate which is most exposed to the heat of the waste gas.

In the case of a two-part control plate, it is advantageous for the cooling water to first flow through the inner zone of the control plate halves adjacent to the dividing plane and then back to the outer zone.

Preferably, the movement and rotation of the control plate are performed simultaneously with the rotation of the suction bend.

The invention will be explained below by way of one embodiment with reference to the drawings. In FIG. 1, waste gas from a glass tank furnace 2 is sucked through an electrostatic precipitator 6 by a fan 4.

A bar cubelator 8 is directly connected to the glass tank furnace 2, and a suction bent pipe 12 is disposed through a tip end 10 of the recubulator 8 so as to be freely pivotable. This arrangement is
For example, in the event of a failure in the electrostatic precipitator 6, if the suction bend 12 is swiveled out, it can be swiveled so that the waste gas flows unfiltered through the chimney 14, which serves as a temporary chimney. ing. 0.1 to 0.0 in a glass tank furnace.
The low gauge pressure of the two-cape underwater pressure is controlled very precisely and constantly by a control device in the region of the recubulator 8.

In accordance with the invention, a control plate is pivotably provided in the slit between the tip 10 of the recubulator and the suction bend 12. The plate is more accurately illustrated in FIG. In FIG. 2, the control plate 16 is shown in the side view of FIG.
It is recognized that it can be rotated upwards. The plate is
It is pivotable about an externally located vertical pivot axis 18 in a horizontal plane perpendicular to the plane of the drawing in FIG. FIG. 3 is a top view of the pivot plane.

The plate 16 consists of two parts and has two halves 16a and 16b. Both halves are symmetrical about the dividing plane 201. It can further be seen in FIG. 3 that each half 16a and 16b is connected to the pivot shaft 18 by one arm 22 and 23, respectively. When pivoting, both halves 16a and 16b rest on an outwardly extending support frame 24. It is also possible to provide rolls to reduce the degree of friction. Both control plate halves 16a and 1
6b is formed as a flat hollow chamber.

The halves have a substantially flat and rectangular cross section and are divided by a separating wall 25 into an outer zone 26 and an inner zone 28 . The cooling water is first introduced into the inner zone 28 via the inlet 29 , flows around the outermost edge of the separating wall 25 , and then flows inwardly to the outlet 31 , which is located close to the inlet 29 . Reflux occurs through zone 26.
FIG. 3 illustrates the situation when both halves of the control plate are in their closest position to each other.

In this way, even when the halves are vertically closest to each other, the halves are formed in a grandchild shape so that a closed orifice 30 is formed inside between them. Next, in the electrostatic precipitator of the present invention, in order to adjust the gas flow rate of the waste gas passage between the cut of the waste gas outlet of the recubulator and the one end face of the suction bent pipe, a cut is made in the passage. Since a pair of heat-resistant plates are arranged that can be rotated in the same plane so as to change the area, the slit can be made as small as possible, and air can enter from the slit gap in this area. The amount can be kept as small as possible, making it possible to reduce the pressure loss due to the total pressure inside the furnace.

Furthermore, since the pair of heat-resistant plates each have a concave portion in their opposing portions, even when the plates are closest to each other, a relatively wide entrance is formed in the center of the exhaust gas passage, and therefore, powder and granules are Even when waste gas containing such substances passes through, clogging of the gas passage by particles and other deposits can be reduced, and the pressure inside the furnace can be stably maintained.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view of the entire electrostatic precipitator device, FIG. 2 is a side view of an additional control device according to the invention, and FIG. 3 is a plan view of the device of FIG. 2. 2...Glass tank furnace, 6...Fin air collection jinbishi-nao, 10
...Recubulator tip, 12...Suction bent tube, 16...Control plate. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A glass furnace, a recuperator to which waste gas from the glass furnace is supplied, an electrostatic precipitator for purifying the supplied waste gas, and an electrostatic precipitator for purifying the waste gas sent from the recuperator. One open end is disposed close to the cut of the waste gas outlet of the recuperator for supplying the waste gas to the dust container,
The other open end is connected to an electrostatic precipitator, and in order to allow the one open end to move away from the cut, there is a suction bent tube that is rotatably provided, and the suction bent tube is connected from the cut to the suction bent tube. In order to adjust the opening degree of the exhaust gas passages to one open end by approaching and leaving each other within the passage, they are connected so as to be freely pivotable within the same plane, and when they are turned so as to approach each other, An electrostatic precipitator comprising a pair of heat-resistant plates having recesses in opposing parts so that an orifice is formed in the center of a waste gas passage. 2. The pair of heat-resistant plates includes an inner zone adjacent to the orifice and an outer zone communicating with the inner zone, the pair being formed by a separation wall provided therein. The electrostatic precipitator according to scope 1. 3. The inner zone is provided with a supply port for supplying cooling water, and the outer zone is provided with a delivery port for sending out cooling water, and the cooling water is supplied from the supply port to the inner zone, and then the outer zone communicates with the inner zone. The electrostatic precipitator according to claim 2, wherein the electrostatic precipitator is configured to be supplied to a zone.