KR102523882B1 - Chemical stripping device that facilitates chemical stripping of high-concentration toxic gas treatment and hot gas path turbine components of various sizes - Google Patents

Abstract

The present invention relates to a chemical stripping device for facilitating the treatment of high-concentration toxic gas generated during the chemical stripping of hot components, and the chemical stripping of hot gas turbine components of various sizes, and more specifically, to a chemical stripping device for facilitating the treatment of high-concentration toxic gas and the chemical stripping of hot gas turbine components of various sizes, comprising: a box-shaped water tank having an upper part opened to contain chemical materials in an inner space; a hood installed on both ends in the longitudinal direction of the water tank to collect toxic gas generated inside the water tank; and a door for opening and closing the upper side of the water tank, wherein the upper part of the water tank is closed by the door during chemical stripping and toxic gas is collected by the hood having a dust collection function mounted thereon. As described above, the chemical stripping device for facilitating the treatment of high-concentration toxic gas and the chemical stripping of hot gas turbine components of various sizes according to the present invention can be installed and operated easily owing to the simple configuration of the device, and can respond flexibly depending on the size or number of hot components on which to perform chemical stripping, thereby making operation and management very efficient.

Description

Chemical stripping device that facilitates chemical stripping of high-concentration toxic gas treatment and hot gas path turbine components of various sizes}

The present invention relates to a chemical stripping device for high-temperature parts of a gas turbine, and more particularly, to a chemical stripping device that is easy to process high-concentration toxic gases generated during chemical stripping of high-temperature parts and to chemically strip high-temperature parts of gas turbines of various sizes. .

In order to repair high-temperature parts of gas turbines such as blade vanes, liners, and combustors, chemical stripping must be performed as a pretreatment process. The chemical stripping operation is an operation of chemically dissolving and removing a metal film (MCrAlY, M=Ni, Co), which is a thermal spray-coated high-temperature oxidation-resistant bond coating layer.

During this chemical stripping operation, a high concentration of harmful gases (HCl, HNO ₃ , Cl ₂ ) is necessarily generated, so various studies are being conducted on the problem of collecting or treating harmful gases.

As a prior art related to harmful gas collection or treatment, Korean Patent Registration No. 10-2149353 discloses that a door 20 is mounted on the upper surface of a water tank 10 having an open top and containing chemicals in the inner space so as to be able to be opened and closed. When chemical stripping is performed, the upper part of the water tank 10 is closed by closing the door 20, and at the same time, toxic gases generated inside the water tank 10 are removed through the hood 30 installed inside the water tank 10. In the method of discharging high-concentration toxic gases generated during chemical stripping of high-temperature parts of a gas turbine that collects dust and discharges it to the outside through a discharge pipe mounted on the hood 30 or collects dust in a separate dust collection tank, in the water tank 10 Rails 11 are formed on both edges of the upper surface, and a pair of doors 20 that open and close the upper part of the water tank 10 by sliding along the rails 11 are mounted. When approaching, the upper part of the water tank 10 is closed, and when moving away from each other, the upper part of the water tank 10 is open. The pair of doors 20 are formed to have a certain height upward, and a space portion is formed in the lower portion of the door 20, and the space portion formed in the lower portion of the door 20 is generated in the water tank 10. A hood 30 for collecting toxic gases is installed so as not to interfere with the door 20 moving along the rail 20, and the hood 30 is a rail formed on both edges of the upper surface of the water tank 10 ( 11) is installed relatively lower than the inner ceiling surface of the door 20 so as not to interfere with the door 20 moving along the rail 11, and on the inside of the upper surface of the water tank 10 on which the rail 11 is formed A step 12 is formed, and a plate-shaped cover 40 that blocks toxic gases still remaining inside the water tank 10 from being discharged to the outside while the door 20 is open on the step 12 A method for discharging high-concentration toxic gases generated during chemical stripping of high-temperature parts of a gas turbine, characterized in that is seated, is registered and published.

In another prior art, Korean Patent Registration Publication No. 10-1783373 has an exhaust pipe (1a) through which purified gas is discharged, is installed at the top, and a washing liquid injection nozzle (1b) is installed at the top of the inside, and the spray nozzle (1b) A scrubber (1) equipped with a gas-liquid contact means (Ms) with multiple functions on the lower side and a waste liquid storage tank (1c) installed at the lower side, and a waste gas connected to one side of the waste liquid storage tank (1c) installed below the scrubber (1). In the waste gas treatment scrubber including an inlet pipe (2) and a washing liquid supply pipe (3) connected to a washing liquid injection nozzle (1b) installed on the inside of the scrubber (1), the multi-function gas-liquid contact means (Ms) is upward A groove of a certain depth upwards between the focusing gas-liquid contact means unit (M1) in which a plurality of tubular circular tubes (4) are vertically and in parallel in close contact with the inside of the frame (F), and the side walls (W1, W2, W3). (h) a plurality of rod-shaped round rods 5 formed in the longitudinal direction are arranged horizontally and in parallel at regular intervals, and are installed in a plurality of layers, and between the layers, intervals and round rods 5 are alternately arranged At the same time as being mounted inside the frame (F), rectangular through holes (Ha) made of partition walls (W4) are formed in all directions continuously on the upper and lower sides of the frame (F), and four adjacent square through holes (Ha) are distributed in the center. In the gas-liquid contact means unit (M2) and the frame (F) in which the dispersion layers (S, S) are installed, the mesh sheet (6) of a certain thickness woven in two layers is arranged at regular intervals, 'Π' shaped vertical partition walls ( 7), a filter body (f) is disposed while passing in a zigzag manner between them, and rectangular through holes (Ha) made of partition walls (W4) are formed continuously in all directions on the upper and lower sides of the filter body (f), and adjacent A waste gas treatment scrubber characterized by sequentially stacking gas-liquid contact means units (M3) provided with dispersion layers (S, S) in which four square through holes (Ha) are distributed in the center is registered and published.

However, the device or method for treating toxic gases generated during the conventional chemical stripping process is very complicated in device configuration and equipment, and is composed of equipment that fits the size (size) of the high-temperature part to be chemically stripped, so it is small in size or Devices suitable for processing small-sized high-temperature parts cannot handle large-sized high-temperature parts (combustion baskets, transition pieces, etc.) Chemical treatment is possible, but there were disadvantages such as being very inefficient when operating a large-sized device to chemically treat small-scale high-temperature parts.

Republic of Korea Patent Registration No. 10-2149353 (method for discharging high-concentration toxic gas generated during chemical stripping of high-temperature gas turbine parts, registration date: August 24, 2020) Republic of Korea Patent Registration Publication No. 10-1783373 (Scrubber for treating toxic waste gas discharged from semiconductor process, registration date September 25, 2017) Republic of Korea Patent Registration No. 10-0238387 (apparatus and method for purifying unreacted toxic gas discharged from chemical vapor deposition system, registration date: October 13, 1999) Republic of Korea Patent Registration No. 10-0511564 (Catalyst for simultaneous removal of toxic gases and odorous substances emitted from chemical processes, manufacturing method and use thereof, registration date August 24, 2005) Republic of Korea Patent Registration No. 10-1533623 (toxic gas treatment system and toxic gas treatment method discharged from semiconductor manufacturing facilities, registration date June 29, 2015) Republic of Korea Patent Registration Publication No. 10-0213440 (toxic gas discharge pipe, registration date May 13, 1999)

The present invention has been made to solve the above-mentioned problems, and the device configuration is simple, and it is possible to operate according to the size or quantity of high-temperature parts for chemical stripping. High concentration toxic gas treatment and gas turbines of various sizes Its object is to provide a chemical stripping device that facilitates chemical stripping of high-temperature parts.

The chemical stripping device of the present invention, which is easy to process high-concentration toxic gases and chemically strip high-temperature parts of gas turbines of various sizes, has a hexahedron-shaped water tank with an open top to contain chemicals in the inner space, and both ends in the longitudinal direction of the water tank It is composed of a hood installed in the tank to collect toxic gases generated inside the tank and a door that opens and closes the opening on the upper side of the tank. During chemical stripping, the top of the tank is closed by the door and equipped with a dust collection function. It is characterized by dust collection of toxic gases.

As described above, the chemical stripping device of the present invention, which is easy to chemically strip high-concentration toxic gas treatment and gas turbine high-temperature parts of various sizes, has a simple device configuration and is easy to install and operate, and also size or quantity of high-temperature parts for chemical stripping It has remarkable effects such as very efficient operation and management because it can respond flexibly according to the

1 is a perspective view of a chemical stripping apparatus of the present invention;
Figure 2 is another perspective view of the present invention chemical stripping device.
Figure 3 is a perspective view of the present invention chemical stripping device with the cover closed.
Figure 4 is a perspective view of the chemical stripping apparatus of the present invention with the door closed.
Figure 5 is a perspective view of the chemical stripping device of the present invention in a state in which the door is half open.
Figure 6 is a perspective view of the chemical stripping device of the present invention in a state in which the cover is partially opened.
Figure 7 is a perspective view of the chemical stripping device of the present invention in a state in which all partition members are detached.
8 is a perspective view of the chemical stripping apparatus of the present invention in a state in which a part of the partition member is detached.
Figure 9 is a perspective view of a portion of the chemical stripping device of the present invention.
10 is a perspective view of a partition member constituted in the chemical stripping device of the present invention.
11 is a front view of a partition member constituted in the chemical stripping device of the present invention.
Figure 12 is a perspective view of the lid constituted in the chemical stripping device of the present invention.

The chemical stripping apparatus of the present invention, which is easy to process high-concentration toxic gases and chemically strip high-temperature parts of gas turbines of various sizes, has a hexahedron-shaped water tank 110 with an open top to contain chemicals in the inner space, and the water tank 110 ) installed at both ends in the longitudinal direction of the tank 110 to collect toxic gases generated inside the tank 110, and a door 142 for opening and closing the upper opening of the tank 110 Chemical stripping During operation, the upper part of the water tank 110 is closed by the door 142, and the toxic gas is collected by the hood 120 equipped with a dust collection function.

The inside of the water tank 110 is characterized in that it is divided into a plurality of spaces by a plurality of partition devices 130.

In addition, a plurality of vertically long seating grooves 111 are formed on the inner side of the water tank 110 where the hood 120 is not installed, so that the partition device 130 can be installed according to the size or quantity of high-temperature parts. 111 is inserted and separated in the vertical direction, but the space divided by the partition device 130 is characterized in that operating conditions can be controlled separately.

In addition, it is characterized in that the front and rear surfaces of the partition device 130 that do not come into contact with the water tank 110 are configured to collect toxic gases like the hood 120.

In addition, the seating groove 111 of the water tank 110 is formed inclined toward the center of the water tank 110 toward the lower side, and the partition device 130 is formed in a trapezoidal shape in which the length of the upper side is longer than the length of the lower side. It is characterized by easy insertion and separation of the partition device 130.

In addition, the upper surface of the partition device 130 is characterized in that a hooking groove 131 to which a wire or hook can be bound is formed so that it can be easily lifted upward by a device such as a hoist or a crane.

In addition, the door 142 is characterized in that it is a roll screen type.

In addition, the door device 140 included to drive the door 142 includes a casing 141 mounted long in the longitudinal direction of the water tank 110 at the rear end of the water tank 110, and the inside of the casing 141. A roll screen type door 142 mounted on the casing 141 and pulled in and out from the inside of the casing 141 by a driving means, and a dome shape on the outside of the hood 120 mounted on both ends of the water tank 110 in the longitudinal direction. It is characterized by being composed of a guide rail 143 that protrudes upward and serves as a guide when the roll screen type door 142 is drawn out or brought in.

Hereinafter, a chemical stripping device for easy chemical stripping of high-concentration toxic gas treatment and gas turbine high-temperature parts of various sizes according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of the chemical stripping device of the present invention, Figure 2 is another perspective view of the chemical stripping device of the present invention, Figure 3 is a perspective view of the chemical stripping device of the present invention with the cover closed, Figure 4 is a perspective view of the chemical stripping device of the present invention with the door closed 5 is a perspective view of the chemical stripping device of the present invention with the door half open, FIG. 6 is a perspective view of the chemical stripping device of the present invention with the cover partially open, and FIG. 7 is a perspective view of the chemical stripping device of the present invention with all partition members detached. 8 is a perspective view of the chemical stripping device of the present invention in a state in which a part of the partition member is detached, FIG. 9 is a perspective view of a part of the chemical stripping device of the present invention, FIG. 10 is a perspective view of the partition member constituted by the chemical stripping device of the present invention, FIG. 12 is a front view of a partition member constituted in the chemical stripping device of the present invention, and FIG. 12 is a perspective view of a lid constituted in the chemical stripping device of the present invention.

As shown in FIGS. 1 to 12, the present invention relates to a chemical stripping device 100 that is easy to process high-concentration toxic gases generated during chemical stripping and chemically strip high-temperature parts of gas turbines of various sizes.

More specifically, the chemical stripping device 100 of the present invention has a hexahedron-shaped water tank 110 in which the upper part is opened to contain chemicals in the inner space, and the water tank 110 at both ends in the longitudinal direction of the water tank 110 It consists of a hood 120 that collects toxic gases generated inside the tank 110 and a door 142 mounted to open and close the upper opening of the tank 110, so that the upper part of the tank 110 during chemical stripping work is closed by the door 142 and is characterized in that the toxic gas can be collected by the hood 120 equipped with the dust collection function.

A plurality of brackets 150 are mounted on the top of the water tank 110 to facilitate hanging or mounting high-temperature parts, and the brackets 150 are V-shaped and spaced apart at regular intervals along the longitudinal direction of the water tank 110. to be installed

Preferably, the inside of the water tank 110 of the present invention is divided into a plurality of spaces by a plurality of partition devices 130.

A plurality of mounting grooves 111 formed long vertically are formed on the inner side surface of the water tank 110 where the hood 120 is not installed, and the partition device 130 is inserted into the mounting grooves 111 from the top to the bottom. By doing so, it is possible to divide the inner space of the water tank 110.

That is, according to the size or quantity of the high-temperature parts, the partition device 130 is inserted and separated from the seating groove 111 in the vertical direction, but the space divided by the partition device 130 controls operating conditions separately. made it possible

In particular, the partition device 130 is configured to collect toxic gases like the hood 120, so that toxic gases can be effectively collected.

In order to effectively collect or inhale toxic gas, dust must be collected on the front and rear surfaces of the partition device 130 that does not come into contact with the water tank 110.

Therefore, when chemical stripping a small amount of high-temperature parts or using small-sized high-temperature parts, all partition devices 130 are installed to perform the chemical stripping operation, and when chemical stripping of large-sized high-temperature parts is performed, all partitions as necessary After the device 130 is separated, the chemical stripping operation is performed.

A tank may be included inside the hood 120 or the partition device 130 to compress and store the collected toxic gas.

The tank and dust collection function constituted by the partition device 130 and the hood 120 and the conditions for separately operating the space divided by the partition device 130 can be realized by well-known means, so detailed descriptions are omitted. let it do

On the other hand, the seating groove 111 of the water tank 110 is formed inclined toward the center of the water tank 110 toward the lower side, and the partition device 130 of the present invention has a trapezoidal shape in which the length of the upper side is longer than the length of the lower side. It was made very easy to insert the partition device 130 into the seating groove 111 by forming a.

On the upper surface of the partition device 130, a hooking groove 131 to which a wire or hook can be bound is formed so that it can be easily lifted upward by a device such as a hoist or crane.

When the partition device 130 is lifted upward with a device such as a hoist or a crane, the catching groove 131 is formed in plurality so that the partition device 130 is lifted while maintaining a horizontal state without leaning to one side. And the shape is not limited to any one form.

In addition, the door 142 opening the top of the water tank 110 is mounted in a roll screen type.

More preferably, the door device 140 included to drive the door 142 of the present invention includes a casing 141 mounted long in the longitudinal direction of the water tank 110 at the rear end of the water tank 110, and the casing ( 141) and a roll screen type door 142 that is drawn and drawn from the inside of the casing 141 to the outside by a driving means, and a hood 120 mounted at both ends of the water tank 110 in the longitudinal direction It is formed in a dome shape on the outside of the roll screen type door 142 so that it is composed of a guide rail 143 serving as a guide when withdrawing or retracting.

At this time, the roll type may refer to a configuration such as a blind often installed on a window, and a driving means for drawing or withdrawing the door 142 into or out of the casing 141 may use a manual or a power device such as a motor. Since it can be designed by well-known means, a detailed description thereof will be omitted.

And after the chemical stripping operation is finished, the water vapor generated by the heat remaining in the water tank 110 is covered with a cover 160 having the configuration shown in FIG. 12 on the opening side of the water tank 110 so that it is not discharged to the outside may be

The cover 150 has a plate shape, and a handle 161 is formed on the upper surface so that the operator can easily grip it.

On the other hand, the water vapor generated by the heat remaining in the water tank 110 is not discharged to the outside and is collected in the form of water droplets on the lower surface of the cover 160. In addition to the load, it is a great burden on the operator in the process of lifting the cover 160 for a new task.

Accordingly, a plurality of guide needles (not shown) are mounted on the lower surface of the cover 160 to guide water vapor containing toxic gas to the water tank 110. to arrange them so that

As described above, the chemical stripping device of the present invention, which is easy to chemically strip high-concentration toxic gas treatment and gas turbine high-temperature parts of various sizes, has a simple device configuration and is easy to install and operate, and also size or quantity of high-temperature parts for chemical stripping It has remarkable effects such as very efficient operation and management because it can respond flexibly according to the

100. Chemical stripping equipment
110. Tank 111. Seating groove
120. Hood
130. Partition device 131. Hanging groove
140. Door device 141. Casing 142. Door
143. Guide rail
150. Bracket
160. Cover 161. Handle

Claims (8)

A hexahedron-shaped water tank 110 with an open top to contain chemicals in the inner space, and a hood installed at both ends in the longitudinal direction of the water tank 110 to collect toxic gases generated inside the water tank 110 120 and a door 142 that opens and closes the upper opening of the water tank 110, and during chemical stripping, the upper part of the water tank 110 is closed by the door 142, and a hood equipped with a dust collection function (120) to collect toxic gas, but the inside of the water tank 110 is divided into a plurality of spaces by a plurality of partition devices 130,
A plurality of vertically long seating grooves 111 are formed on the inner side of the water tank 110 where the hood 120 is not installed, so that the partition device 130 is installed in the seating groove ( 111) to be inserted and separated in the vertical direction, but the space divided by the partition device 130 can control operating conditions separately,
The front and rear surfaces of the partition device 130 that do not come into contact with the water tank 110 are configured to collect toxic gases like the hood 120. Chemical stripping of high-concentration toxic gas treatment and various sizes of gas turbine high-temperature parts Easy chemical stripping device.
delete delete delete According to claim 1,
The seating groove 111 of the water tank 110 is formed inclined toward the center of the water tank 110 toward the lower side, and the partition device 130 is formed in a trapezoidal shape in which the length of the upper side is longer than the length of the lower side. A chemical stripping device that is easy to chemically strip high-concentration toxic gas treatment and high-temperature parts of gas turbines of various sizes, characterized by easy insertion and removal of the partition device 130.
According to claim 5,
On the upper surface of the partition device 130, a hooking groove 131 to which a wire or hook can be bound is formed to facilitate lifting upward by a device such as a hoist or crane, characterized by high concentration toxic gas treatment and various sizes. A chemical stripping device that facilitates chemical stripping of high-temperature parts of gas turbines.
According to claim 1,
The door 142 is a chemical stripping device that is easy to chemically strip high-concentration toxic gas treatment and gas turbine high-temperature parts of various sizes, characterized in that it is a roll screen type.
According to claim 7,
The door device 140 included to drive the door 142 is mounted inside the casing 141, which is mounted long in the longitudinal direction of the water tank 110 at the rear end of the water tank 110, and the casing 141. The door 142 of the roll screen type, which is drawn in and out from the inside of the casing 141 by the driving means, and the hood 120 mounted on both ends of the water tank 110 in the longitudinal direction are formed in a dome shape on the outside. A chemical stripping device that is easy to process high-concentration toxic gases and chemically strip high-temperature parts of gas turbines of various sizes, characterized by being composed of a guide rail 143 that protrudes and serves as a guide when the roll screen type door 142 is drawn out or brought in. .

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