JP2941152B2 - Method and apparatus for inspecting catalyst surface shape - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for inspecting the surface shape of a catalyst, and is used when a granular catalyst is filled in a reaction tower used in a petrochemical plant or the like.

[0002]

2. Description of the Related Art A reaction tower used in a petrochemical plant or the like is filled with an appropriate catalyst as necessary to promote the reaction of a reaction solution. The catalyst is usually granulated in order to enhance the contact property with the reaction solution, and is uniformly packed in the reaction tower at a predetermined density. Conventionally, when charging the catalyst, a hose to which the catalyst is supplied from an external hopper is introduced through the upper opening of the reaction tower, and an operator in the tower operates the hose appropriately to spray the catalyst and level the surface. Was working. However, in such a conventional method, since the worker enters the reaction tower and performs the work manually, the work efficiency is low, and
There were inconveniences such as the solidification of the catalyst by the operator and the unevenness of the packing density of the catalyst.

[0003] In order to solve such inconveniences, the present applicant has developed a filling method using a rotary spray type catalyst discharger (see Japanese Patent Publication No. 1-28070).
In this filling method, a catalyst discharger for rotating and spraying a catalyst from a lower rotary discharge plate is hung from the upper opening of the reaction tower, and the hanging height of the catalyst discharger and the rotation speed of the discharge plate are appropriately controlled. Thus, the catalyst is sprayed in multiple concentric circles from the central portion to the peripheral portion in the reaction tower, whereby it is possible to easily secure appropriate and uniform spray density and surface flatness.

[0004]

By the way, if the catalyst is filled by the rotary spraying described above, an appropriate spraying state can be easily ensured without an operator entering the inside of the reaction tower. However, since automatic spraying is not performed directly by an operator, gently irregularities may be generated on the surface of the sprayed catalyst. And even if it is gradual, there is a possibility that a functional problem may occur depending on the degree of the unevenness. For this reason, after the above-mentioned rotary spraying, it is necessary to inspect the shape of the catalyst surface as appropriate, and if the unevenness is large, perform the spraying again to correct it.

[0005] However, the catalyst is porous and uniform granular, and it is difficult to reliably determine the shape of the catalyst surface even if an image is taken by introducing a television camera or the like into the reaction tower. It is. For this reason, in the past, after filling the catalyst, workers entered the reaction tower, directly inspected visually, and performed work such as leveling unevenness as necessary, which is a major obstacle in improving work efficiency. Had become.

On the other hand, if a high-precision shape inspection device is introduced into the reaction tower after the catalyst has been charged, monitoring from the outside can be performed, and the catalyst charging operation can be automated by combining with the above-mentioned rotary spraying. In addition, the equipment becomes large and there is a problem in terms of work efficiency. In other words, for inspection, once the catalyst discharger introduced into the reaction tower at the time of spraying is taken out, the inspection device is introduced, and when correction is necessary, the catalyst discharger is introduced again. There is a problem above.
An object of the present invention is to provide a catalyst surface shape inspection method and a device capable of reliably inspecting the surface shape of a catalyst filled in a reaction tower from the outside, simplifying the device, and improving workability. is there.

In the present invention, the surface shape of the catalyst is monitored by scanning the surface of the catalyst with a distance sensor supported on a catalyst discharger suspended in the reaction tower. That is, in the method of the present invention, a non-contact type distance sensor is supported on a catalyst discharger that is suspended inside the reaction tower and sprays a catalyst in the reaction tower, and the catalyst discharge by the catalyst discharger is performed. Thereafter, the surface of the catalyst sprayed in the reaction tower is scanned by the distance sensor, and the shape of the surface is inspected from the distance to the surface of the catalyst output by the distance sensor.

Further, the scanning is performed by measuring the distance from the distance sensor to the catalyst surface immediately below while moving the distance sensor substantially horizontally. Further, the distance sensor is fixed to the vicinity of the tip of a holding means which expands and contracts radially from the catalyst ejector and whose tip can contact the inner surface of the reaction tower in order to hold the catalyst ejector at the center of the reaction tower. The scanning is performed by moving the distance sensor by expanding and contracting the holding unit.

On the other hand, the device of the present invention is a non-contact type distance sensor which is suspended in a reaction tower and supported by a catalyst discharger for spraying a catalyst in the reaction tower and capable of scanning a lower catalyst surface. And processing means for controlling scanning of the distance sensor and inspecting the shape of the surface from the distance to the catalyst surface output from the distance sensor. Further, the distance sensor is capable of measuring a distance to a catalyst surface immediately below, and is supported in the vicinity of a tip of a holding means which expands and contracts radially from the catalyst discharger and whose tip can abut on the inner surface of the reaction tower. It is characterized by being.

[0010]

In the present invention, after the catalyst is sprayed by the catalyst discharger, the catalyst surface is scanned in a radial direction or the like by a distance sensor supported by the catalyst sprayer, and the height of each portion of the scanned surface is measured. By sequentially recording and measuring the contour shape or comparing the height of each part with a reference value, the unevenness of the catalyst surface along the direction is inspected. This makes it possible to reliably monitor the surface shape of the catalyst filled in the reaction tower from the outside. Then, when there is unevenness or the like and correction is required, the catalyst discharger suspended in the reaction tower is operated again, and the correction is performed by spraying the catalyst.

Therefore, in the present invention, the complexity of an operator entering the reaction tower to perform inspection and correction, and the complexity of once removing the catalyst discharger and introducing another shape inspection device are also reduced. It is possible to avoid a decrease in work efficiency.
In the present invention, since there is no need to provide a special mechanism in the reaction tower other than the distance sensor supported by the catalyst sprayer, the device configuration can be simplified.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a reaction tower 10 is a large-sized cylindrical reaction tower having a bottom filled with a catalyst 11. An opening 12 is provided at the center of the upper surface, and the bottom is fixedly supported by a foundation 13. . At the top of the reaction tower 10, a gantry 14 is assembled.
Inside 14 is a catalyst filling device 20 according to the present invention.

The catalyst loading device 20 is suspended and introduced into the reaction tower 10 to rotate and disperse the catalyst, and a chain 41 suspending the catalyst discharger 30 is lifted to raise and lower the catalyst discharger 30. The system includes a chain hoisting mechanism 40 for feeding, a hopper mechanism 50 for supplying a catalyst to be sprayed, and a hose hoisting mechanism 60 for winding up a hose 61 for supplying the catalyst from the hopper mechanism 50 to the catalyst discharger 30. Further, the catalyst filling device 20 performs overall operation control based on outputs from various sensors and various settings including a wire-shaped level meter 71 for detecting the surface height of the catalyst 11 filled in the reaction tower 10. Control means 70 is provided.

As shown in FIGS. 2 and 3, the catalyst discharger 30 has a discharge plate 31 for discharging the catalyst while rotating at a lower portion, and a motor 32 and a shaft 33 for driving the discharge plate 31 to rotate therein. Have. Further, the catalyst discharger 30 is provided with a catalyst passage 34 for feeding the catalyst supplied from the hose 61 to the discharge plate 31.
And three holding arms 35 extending radially as holding means for holding the catalyst discharger 30 at the center of the reaction tower 10 on the outer periphery.

The discharge plate 31 is rotatably driven by a motor 32 and a shaft 33, and discharges a catalyst supplied from a catalyst passage 34 at a number of different radial positions, thereby dispersing the catalyst in multiple concentric circles. As a specific structure of the discharge plate 31, for example, a structure in which a large number of catalyst passages having different radial lengths are stacked in layers as disclosed in Japanese Patent Application No. 63-165577 by the present applicant is preferable. The catalyst passage 34 is divided into three portions at an intermediate portion so as to avoid the motor 32 and the shaft 33, and each of the portions is joined again at the lower portion to supply the catalyst to the central portion of the discharge plate 31.

The holding arm 35 is a pantograph-type telescopic mechanism in which a plurality of parallel links are connected to each other, and is arranged at three positions on the outer periphery of the catalyst discharger 30 at equal intervals. When contracted, the catalyst is stored in a storage portion 36 formed between the three intermediate portions of the catalyst passage 34, and is extended by the same amount as each other so that the front end comes into contact with the inner surface of the reaction tower 10 to release the catalyst. The vessel 30 is held at the center position of the reaction tower 10.

More specifically, the holding arm 35 is constituted by arranging a plurality of shaft members 80 whose center portions are pivotally connected to each other, and sequentially rotating and connecting the ends of each pair. It expands and contracts as a whole by expanding and contracting in a parallel link shape. Each holding arm 35 is connected to an air cylinder 83 extending from the base end side lower end portion 80A to the tip end side other shaft member 80.
, And each holding cylinder 35 expands and contracts when each air cylinder 83 expands and contracts according to a command from the control means 70.

One end 80 A on the base end side of the holding arm 35 is pivotally connected to the lower part of the catalyst discharger 30. On the other hand, a cylindrical slide shaft 81 into which the shaft 33 is inserted is provided at the center of the catalyst discharger 30, and the periphery thereof moves along the slide shaft 81 from the upper portion of the catalyst discharger 30 to an intermediate portion. A free slide member 82 is provided and the other end
80B is pivotally connected to the slide member 82.

Therefore, each holding arm 35 is expanded and contracted by the corresponding air cylinder 83, but the proximity of the upper and lower ends 80A and 80B on the base side is regulated by the elevation of the common slide member 82. The expansion and contraction of each holding arm 35 is synchronized with each other, and the tip side of each holding arm 35 is
Are located at the same distance from the center. In addition, since the lower end 80A of the base end side of the holding arm 35 is rotatably connected to the catalyst discharger 30 and the upper end 80B is raised and lowered immediately above the lower end 80A, the holding arm 35 is horizontally extended and contracted. In addition, during expansion and contraction, the upper position fluctuates, but the lower side is maintained at a constant height.

A bar-shaped tip member extending vertically with respect to the horizontally extending holding arm 35 is provided on the tip side of the holding arm 35.
84 is installed. Holding arm at the lower end of tip member 84
35 The lower end 80C of the distal end is pivotally connected to the upper end.
80D is displaceably and rotatably engaged downward from the upper portion of the tip member 84. When the holding arm 35 expands and contracts, the tip member 84 maintains a constant horizontal height while the catalyst discharger 30 is maintained.
Is moved in the radial direction. When the holding arm 35 is contracted, the tip member 84 is housed in the storage section 36 together with the holding arm 35.

At the upper and lower ends of the distal end member 84, rollers 85, which are contact members that come into contact with the inner surface of the reaction tower 10 when the holding arm 35 is extended, are supported. Each roller 85 is supported by a swing arm 86. The roller 85 is supported rotatably about an axis parallel to and horizontal to the inner surface of the reaction tower 10, and can roll up and down with respect to the inner surface of the reaction tower 10. Therefore, even when the holding arm 35 is in contact with the inner surface of the reaction tower 10 via the roller 85 at the tip, the catalyst discharger 30
Can be raised and lowered.

A contact sensor 87 using a limit switch is disposed at an upper end of the tip member 84, and a distance sensor 88 capable of remotely measuring an optical type or an ultrasonic type is disposed at a lower end. The contact sensor 87 detects the swing of the swing arm 86 when the roller 85 contacts the inner surface of the reaction tower 10, and the detection output is connected to the control means 70. Distance sensor
88 fires a beam of light or ultrasound downwards,
By detecting the reflection from the surface of the catalyst 11 filled in the reaction tower 10, the distance from the surface to the catalyst discharger 30, that is, the height, is detected.
Connected to 70.

As shown in FIG. 4, the control means 70 controls the spraying control section 72 for performing basic spraying operation control and the expansion and contraction of the holding arm 35 based on the expansion and contraction command and the output of the contact sensor 87. The expansion / contraction controller 73 and the catalyst in the reaction tower 10 are determined based on the distance output by the distance sensor 88 and the expansion / contraction position of the holding arm 35.
And a surface shape measuring unit 74 for measuring the surface shape of the eleventh surface.

The spraying control unit 72 operates according to preset parameters and an operation program, instructs the expansion and contraction control unit 73 to expand and contract the holding arm 35 at the time of spraying, and controls the catalyst 11 from the level meter 71 described above. The hoist mechanism 40 is controlled according to the surface height, the height of the catalyst ejector 30 is adjusted to control the spraying height of the catalyst, and the motor 32 of the catalyst ejector 30 is further controlled.
, And the number of rotations of the discharge plate 31 is adjusted to control the catalyst spraying range. The spray control unit 72
Unwinds the hose 61 by the hose winding mechanism 60,
It includes a function of performing overall control including a winding state, a state of supplying a catalyst from the hopper mechanism 50, and the like.

The telescopic control unit 73 controls the air cylinder 83 based on the telescopic command from the spray control unit 72 to control the holding arm 35
The contact sensor 87 extends during the extension operation.
By continuing the elongation until the contact is detected, the tip of the holding arm 35 can be reliably brought into contact with the inner surface of the reaction tower 10.

The surface shape measuring section 74 calculates the reaction tower of the distance sensor 88 based on the amount of expansion and contraction of the holding arm 35 obtained from the expansion and contraction control section 73.
By obtaining the radial position in the inside 10 and recording the distance measured by the distance sensor 88 at each position, the surface height of the catalyst 11 sprayed in the reaction tower 10 is scanned in the radial direction, and the catalyst is scanned. 11 Measures the contour of the surface in the radial direction (see FIG. 5). The surface shape measuring unit 74 displays the measured surface shape on an operation console (not shown), and from this display the operator determines the flatness of the surface of the catalyst 11, and when it is determined that the unevenness is large, the spray control unit 72 Order spraying again. Alternatively, the surface shape measuring unit 74 may determine that the surface is not flat when there is a height fluctuation of a predetermined amount or more, and automatically instruct the spraying control unit 72 to spray again. In the present embodiment, the catalyst surface shape inspection device is constituted by the distance sensor 88 supported by the holding arm 35 and the control means 70.

In this embodiment, the catalyst is sprayed into the reaction tower 10 in the following procedure. First, the gantry 14
The catalyst discharger 30 is suspended above the upper opening 12 of the reaction tower 10 by a chain 41 from a chain winding mechanism 40 installed in the
Is connected to the upper end of the catalyst passage 34 of the catalyst discharger 30. On this occasion,
The catalyst discharger 30 has the holding arm 35 stored in the storage section 36. Next, the chain hoisting mechanism 40 is operated in accordance with a command from the control means 70, the chain 41 is extended, the catalyst discharger 30 is lowered, and is introduced into the reaction tower 10 from the upper opening 12.

When the catalyst discharger 30 reaches the vicinity of the bottom in the reaction tower 10, the air cylinder 83 is operated by the command of the control means 70 to extend the three holding arms 35 simultaneously. When the holding arm 35 extends and the tip roller 85 contacts the inner surface of the reaction tower 10, the contact sensor 87 operates. By this operation,
The control means 70 stops the air cylinder 83. As a result, the holding arms 35 in each direction come into contact with the inner surface of the reaction tower 10 with the same length, and the catalyst discharger 30 is held at the center of the reaction tower 10.

When the catalyst discharger 30 is held at the center of the reaction tower 10, the control means 70 operates the motor 32 to rotate the discharge plate 31 at a predetermined rotation speed via the shaft 33. A catalyst is supplied to the discharge plate 31 from the hopper mechanism 50 via the catalyst passage 34 and the hose 61, and the catalyst is dispersed from the rotating discharge plate 31 in multiple concentric circles. At this time, the center position of the catalyst discharger 30 is maintained at the center position of the reaction tower 10 by the holding arm 35, and the center of the catalyst spraying area also coincides with the center of the reaction tower 10. Therefore, the height of the catalyst discharger 30, the rotation speed of the discharge plate 31, and the amount of released catalyst are appropriately adjusted by the control means 70,
By controlling the outermost periphery of the catalyst spraying range to substantially coincide with the inner surface position of the reaction tower 10, the density of the catalyst 11 filled in the reaction tower 10 becomes uniform and the surface becomes flat.

As the catalyst is sprayed, the surface position of the catalyst 11 in the reaction tower 10 rises. The control means 70 calculates the height of the catalyst discharger 30 from the unwinding length of the chain 41 of the chain hoisting mechanism 40, detects the surface height of the catalyst 11 in the reaction tower 10 by the level meter 71, and detects the catalyst height from each. The relative height from the surface of 11 to the catalyst discharger 30 is calculated. When the relative height exceeds the predetermined height range, the control means 70 operates the chain winding mechanism 40 to raise the catalyst discharger 30 by a predetermined amount, and the relative height from the surface of the catalyst 11 to the catalyst discharger 30. Is adjusted to fall within a predetermined range. At this time, since the rollers 85 of the holding arm 35 roll on the inner surface of the reaction tower 10, even if the catalyst discharging device 30 is held, the raising of the catalyst discharging device 30 is not prevented.

The above-described dispersion of the catalyst and the raising of the catalyst discharger 30 are repeated, and when the catalyst discharger 30 reaches a predetermined height in the reaction tower 10, a sufficient amount of the catalyst 11 is filled in the reaction tower 10. Therefore, the control means 70 stops the spraying of the catalyst by the catalyst ejector 30, and contracts and holds the holding arm 35. The control means 70 measures the distance to the surface of the catalyst 11 with the distance sensor 88 at the lower end of the holding arm 35 while contracting the holding arm 35, and scans the surface of the catalyst 11 in the radial direction. Inspect flatness. As a result of this inspection, if the surface has irregularities or the like, the holding arm 35 is extended again to perform the spraying of the catalyst by the catalyst discharger 30. At this time, the dispersion state of the catalyst discharger 30 is appropriately adjusted so that a large amount of the catalyst falls at the radial position corresponding to the concave portion.

According to this embodiment, the following effects can be obtained. That is, since the three holding arms 35 equally arranged in the circumferential direction are provided as the holding means, the center of the catalyst discharger 30 can be matched with the center of the reaction tower 10. For this reason, under the control of the control means 70, the catalyst spray region sprayed from the catalyst discharger 30 in multiple concentric circles
If you correspond to the internal shape, the center of each holding arm
With 35, the catalyst can be surely matched, and the catalyst can be sprayed or filled on the bottom surface side of the reaction tower 10 in a uniform state.

That is, even if the shape of the area where the catalyst is sprayed from the catalyst discharger 30 corresponds to the inside shape of the reaction tower 10, if the catalyst discharger 30 is deviated from the center of the reaction tower 10, A large amount of catalyst may be deposited near the inner surface on one side of the reaction tower 10 and inconvenience such as a shortage of catalyst may occur near the inner surface on the opposite side.However, in this embodiment, the catalyst discharger 30 is provided with a holding arm.
Since such an inconvenience is always maintained at the center of the reaction column 10 by 35, such inconvenience is surely avoided.

Further, a tip member 84 extending in the vertical direction is provided at the tip of the holding arm 35, and two points of the rollers 85 at the upper and lower ends thereof are brought into contact with the inner surface of the reaction tower 10. With the contact, the catalyst discharger 30 acts so as to maintain the posture vertically, and its axial direction can be made coincident with the central axis of the reaction tower 10. For this reason, the unevenness of the catalyst distribution state due to the inclination of the axis of the catalyst discharger 30 can be eliminated, and the accuracy of the catalyst distribution described above can be further improved.

Further, since the holding arm 35 is integrated with the catalyst discharger 30 and can be stored inside, the installation operation for filling the catalyst can be easily performed. By setting it in a state, it can be applied to any reaction tower 10 as long as there is an opening through which the catalyst discharger 30 can pass.

Further, since the three holding arms 35 are collectively driven by the same air cylinder 83 and slide member 82, their operations can be synchronized to equalize the amount of expansion and contraction of each other. For this reason, if each holding arm 35 is extended and each end is brought into contact with the inner surface of the reaction tower 10, the state is such that the length of each holding arm 35 is equal, that is, the catalyst discharger 30 It will be located in the center.
Therefore, the holding of the catalyst discharger 30 at the center of the reaction tower 10 can be easily controlled and the operation can be reliably performed.

At the end of the holding arm 35, a roller 85 as a contact member is provided, and its contact with the reaction tower 10 is detected by a contact switch 87. When the holding arm 35 is extended to hold it at the center, the contact switch can be
The extension operation may be continued until the operation of 87 is performed, so that the operation can be easily controlled. Further, since the elongation operation is continued until the catalyst is brought into contact with the reaction tower 10, it is possible to avoid a disadvantage that the catalyst discharger 30 does not sufficiently hold the center of the reaction tower 10 due to insufficient elongation.

Further, the roller 85 at the tip of the holding arm 35
Can be rolled up and down on the inner surface of the reaction tower 10.Therefore, it is not necessary to release the holding arm 35 even when the catalyst ejector 30 is raised with the rise of the catalyst surface. You can go up as it is. For this reason, unnecessary work such as expansion and contraction of the holding arm 35 is not required, and it is possible to prevent a drop in efficiency due to interruption of the spraying operation.

On the other hand, in the present embodiment, the distance sensor 88 provided at the tip of the holding arm 35 of the catalyst discharger 30 detects the catalyst in the reaction tower 10.
Since the surface of the catalyst 11 is scanned and the control unit 70 measures the surface shape of the catalyst 11, it is possible to easily inspect the surface flatness or unevenness of the catalyst 11 for example. For this reason, there is no need for an operator to enter the reaction tower 10 for inspection of the spraying result as in the related art, and the necessity of introducing a separate monitoring device or the like into the reaction tower 10 can be eliminated, and after spraying. The workability during the inspection can be improved, and the configuration of the device for the inspection can be simplified.

Since the inspection can be performed while the catalyst discharger 30 used for spraying is introduced into the reaction tower 10, additional spraying for correcting irregularities is performed immediately after the surface shape inspection. The efficiency can be further improved, and good spraying results can be reliably obtained.

In this embodiment, since the distance sensor 88 is provided at the tip of the holding arm 35 which expands and contracts in the radial direction, the scanning can be performed in accordance with the expansion and contraction of the holding arm 35. Therefore, it is not necessary to provide a separate moving mechanism or the like in order to perform the operation, and the apparatus configuration can be further simplified.

Since the extending and contracting direction of the holding arm 35 is the radial direction, the distance sensor 88 scans the surface of the catalyst 11 in the radial direction. Here, the catalyst 11 sprayed in the reaction tower 10 often has continuous irregularities in the circumferential direction because the spray is multi-concentric. Therefore, by performing the above-described scanning in the radial direction, the measurement performance with respect to the unevenness continuous in the circumferential direction of the surface of the catalyst 11 is optimized, and the surface flatness can be efficiently and reliably inspected.

It should be noted that the present invention is not limited to the above-described embodiment, but includes the following modifications and the like. That is, in the above-described embodiment, the distance sensor 88 may not be provided for each of the three holding arms 35, but may be provided only at any one of the centers. However, the inspection range can be expanded by providing it on all the holding arms 35, and the inspection result can be improved.
As the distance sensor 88, an existing distance sensor such as a sensor using an ultrasonic wave or an infrared ray, a sensor using a laser beam, or the like may be appropriately used.

The distance sensor 88 is not limited to the one that is installed below the tip of the holding arm 35 and scans the surface of the catalyst 11 as it expands and contracts. For example, it may be suspended along a wire or the like stretched below the distal end of the expanding and contracting holding arm 35 and the lower part of the catalyst discharger 30 so as to move along the wire. Further, when the holding arm 35 does not expand and contract, and is a method in which the holding arm 35 stands up from the side surface of the catalyst discharger 30 and is horizontally arranged, the distance sensor 88 may be moved along the lower side of the holding arm 35. Good.

Further, the distance sensor 88 may be separately supported by using a support mechanism other than the holding arm 35, so that scanning in any direction can be set freely. However, with the configuration as in the above embodiment, the support mechanism can be simplified by using the holding arm 35, and the moving mechanism for scanning can be omitted by using the expansion and contraction, and the catalyst surface can be inspected. Can be simplified.

In scanning by the distance sensor 88,
Not only by the movement of the distance sensor 88 itself as described above, the distance sensor 88 is rotatably supported on the lower outer peripheral surface of the catalyst discharger 30, and the inspection beam is caused to rotate in the radial direction of the surface of the catalyst 11 by the rotation. You may make it irradiate a site | part. Further, the scanning direction of the distance sensor 88 is not limited to the radial direction as in the above-described embodiment, and may be another direction.
The scanning may be performed such that the surface can be covered in a planar manner.

On the other hand, based on the distance from the distance sensor 88, the catalyst 11
As a method of inspecting the surface shape of the object, in addition to a method of determining the unevenness as a contour shape in the scanning direction by collecting the distance of each scanned position, the distance of each position is a reference value, for example, the result of the previous spraying is scheduled A method of comparing with a surface height or the like may be appropriately used.

Further, when the irregularities on the surface of the catalyst 11 are corrected based on the inspection result, the setting of the catalyst discharger 30 when spraying again is automatically or manually changed according to the position and degree of the irregularities. I just need. For example, as the concave diameter d of the surface of the catalyst 11, the height h from the surface of the catalyst 11 to the discharge plate 31 of the catalyst discharger 30, the inner diameter D of the reaction tower 10, and the constants C1 and C2, the discharge plate
By setting the number of revolutions R of 31 to C1 × (D−C2) / h ^1/2 , it is possible to obtain an appropriate setting for filling the concave portion.

Further, in the above embodiment, the holding arm
The details of the structure and arrangement of the 35, the driving method, the roller 85, the contact sensor 87, and the like may be appropriately selected for implementation. Further, the control means 70 may use an existing computer system or the like, and may be appropriately set so as to perform the above-described control. Further, the structure and system of other parts of the catalyst discharger 30, the chain hoisting mechanism 40 of the catalyst filling device 20, the hopper mechanism 50,
The structure of the hose winding mechanism 60 and the like may be appropriately selected in implementation.

[0050]

As described above, according to the present invention,
By scanning with the distance sensor provided in the catalyst discharger, the surface shape of the catalyst filled in the reaction tower can be reliably inspected from the outside, and the inspection device can be simplified and Workability can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing the entire configuration of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing the catalyst discharger of the embodiment.

FIG. 3 is a cross-sectional view showing the catalyst discharger of the embodiment.

FIG. 4 is a block diagram showing control means of the embodiment.

FIG. 5 is a cross-sectional view showing the surface shape inspection of the embodiment.

[Explanation of symbols]

 10 Reaction tower 11 Catalyst 20 Catalyst filling device 30 Catalyst discharger 35 Holding arm as holding means 40 Chain hoisting mechanism 50 Hopper mechanism 60 Hose hoisting mechanism 70 Control means constituting catalyst surface shape inspection device 88 Catalyst surface shape inspection device Distance sensor

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-113204 (JP, A) JP-A-4-45839 (JP, A) JP-A-61-18430 (JP, A) JP-A-53-183 21086 (JP, A) JP-A-2-14732 (JP, A) JP-A-61-141923 (JP, A) JP-A-7-60101 (JP, A) JP-A-63-32838 (JP, U) (58) Field surveyed (Int.Cl. ⁶ , DB name) B01J 8/02 B01J 4/00-4/04 B65G 65/30-65/48

Claims (5)

(57) [Claims] 1. A non-contact type distance sensor is supported on a catalyst discharger that is suspended inside a reaction tower and sprays a catalyst in the reaction tower, and after the catalyst discharge by the catalyst discharger, A catalyst surface shape inspection method, wherein a distance sensor scans a surface of the catalyst sprayed in the reaction tower, and inspects a shape of the surface from a distance to the surface of the catalyst output by the distance sensor. 2. The catalyst surface shape inspection method according to claim 1, wherein the scanning is performed by measuring a distance from the distance sensor to a catalyst surface immediately below while moving the distance sensor substantially horizontally. A catalyst surface shape inspection method. 3. The catalyst surface shape inspection method according to claim 2, wherein the catalyst discharger expands and contracts radially from the catalyst discharger to hold the catalyst discharger at the center of the reaction tower, and a tip of the catalyst discharger is an inner surface of the reaction tower. A method for inspecting the surface shape of a catalyst, wherein the distance sensor is fixed in the vicinity of the tip of a holding means capable of abutting on the sensor, and the scanning is performed by moving the distance sensor by expanding and contracting the holding means. 4. A non-contact type distance sensor suspended on the inside of a reaction tower and supported on a catalyst discharger for dispersing a catalyst in the reaction tower and capable of scanning a lower catalyst surface; Control means for controlling scanning and inspecting the shape of the catalyst surface from the distance to the catalyst surface output by the distance sensor. 5. The catalyst surface shape inspection device according to claim 4, wherein the distance sensor is capable of measuring a distance to a catalyst surface immediately below, and expands and contracts in a radial direction from the catalyst discharger, and a tip of the catalyst reacts. A catalyst surface shape inspection device, which is supported near a tip of a holding means capable of contacting an inner surface of a tower.