KR200464825Y1 - An apparatus for spraying slurry coating agent in coal pile as mounted on the Stacker/Reclaimer - Google Patents

Abstract

The present invention relates to a sprinkling system of slurry coating agents used to prevent spontaneous ignition, deterioration of coal quality, and environmental problems such as odor, scattering dust and leachate, which occur in outdoor low coal, company head, etc. By spreading equipment on the stacker / reclaimer (hereinafter referred to as St / Re), it is possible to use the mobility of St / Re, access to low pile piles, and convenience of operation and operation. An object of the present invention is to provide a high speed spraying apparatus capable of efficient spraying.
The present invention to achieve the above object is a coal ash dissolving means for preparing a primary slurry coating agent by dissolving coal ash in water on the ground; A pump and a transfer pipe for transferring the primary slurry coating agent to the movable St / Re; Secondary slurry coating agent preparation means mounted on St / Re; Secondary slurry coating agent high speed spray module mounted on St / Re; It characterized in that it comprises an operating operation device of the spraying equipment.
[Index]
Fly Ash Slurry Coating, Sprayer

Description

An apparatus for spraying slurry coating agent in coal pile as mounted on the Stacker / Reclaimer}

The present invention relates to a spraying device for slurry coating agent used for outdoor low coal, company head, etc. In detail, the existing manual spraying, stationary spraying, spraying vehicle by spraying equipment is installed in St / Re, the upper and lower coal storage facilities The spraying efficiency and spreading speed were improved compared to the spraying method using the method. The coal ash dissolving means for preparing primary slurry coating agent by dissolving Fly Ash, which is the coal ash of power plant on the ground, and the primary slurry coating agent are moved linearly on the rail in low coal. Primary slurry coating agent transfer pump and removable transfer pipe for transferring to St / Re, secondary slurry coating agent for preparing secondary slurry coating agent by injecting additives into the primary slurry coating agent transferred on St / Re It is mounted on the Sudan and St / Re, so that the secondary slurry coating agent can be sprayed on the pile surface for a long distance and high speed. It relates to a high speed spraying device equipped with upper and lower coal installations, characterized in that it comprises a secondary slurry coating agent high speed spraying module composed of a four-pump, a compressor, a high pressure hose, and a spray nozzle, and an operation operation device of a spraying equipment.

Most coal power plants and steel mills have St / Re, which is a facility for the upper and lower coals of coal in the workplace. This facility is installed to top the coal unloaded in the low yard with the boiler and the combustion furnace through the unloader from the coal carrier. The pile coal is moved on the rail installed between the pile and the pile in the low yard. It is a device for continuous feeding on the stomach. Therefore, St / Re is composed of a crane wheel (Bucket Wheel Boom), a bridge (Pylon), a moving platform (Platform) and an operating room that covers the adjacent Pile, and is normally located at the position closest to the coal pile through rail movement. It is operating.

In addition, the workplace is storing the coal in the form of outdoor piles, and the company is also stored wet or dry in the open air. Therefore, coal and coal ash may affect coal quality or affect the surrounding environment depending on weather conditions. Representative examples include fires caused by spontaneous ignition and increased coal moisture during rainfall, resulting in reduced calories and impaired operation of coal handling facilities. In addition, wind and heavy rain may cause environmental problems such as odor, leachate runoff, dust and fly ash generation.

As a countermeasure to solve this problem of outdoor piles, the operation measures such as windbreak forests, windbreak walls, spraying, compaction, and netting were mostly used. In recent years, a method of blocking the wind and rainfall, which is the cause of coal quality deterioration and environmental problems, has been introduced by coating the surface of coal with a surface hardener or slurry coating agent or by adding a binder binder to coal particles. .

Surface hardeners are classified into organic and inorganic. Inorganicity is the case of cement, coal slurry, sodium silicate, coal ash slurry, limestone powder, etc.In organicity, vinyl acetate, acrylate, PTFE (polytetrafluororethylene), polyamide, silicone, chlorinated Rubber, wax, pitch, tar, asphalt, etc. are examples of use. Inorganicity is mainly used for pile surface application and organicity is used in local area for binder of particles to prevent scattering.

The effect of surface hardening agent and slurry on the application of the hardening agent and the coating agent is important in the piles of large worksites such as coal power plants and steel mills, but the characteristics of the spraying means and the spraying device are important.How quickly and efficiently do you spread the pile surface? This is because it affects the effect and performance solubility of the surface hardening | curing agent and the slurry spraying method.

There are many types of spreading equipment depending on the application and the method of spreading. At the place of use, there are spraying means for spraying pesticide, compost, road freezing liquid, mixed soil of greening plant, feed, shotcrete of construction plant, etc. There is or there is a method to be mounted on the vehicle to move and spray.

Due to its characteristics, low coal yards in large-scale workplaces, such as coal power plants and steel mills, consist of a large number of piles in a wide storage space, and require rapid spreading due to the fast pile exhaustion speed. One pile is 100-150m long and 50- wide. Uniform spraying is difficult due to the steep slope of 70m and the height of 10-15m. In rainy weather, piles and low-tank areas are muddy, making it difficult to move in and out of the vehicle. The working environment gets worse depending on weather conditions.

However, the existing spraying means and methods are mainly applied in a small narrow space, and the case of being applied to a large-capacity low-tank pile is an example of a method using a fixed injector with a shotcrete device and a special vehicle equipped with a spraying device. It is becoming. However, these methods have a long spreading operation time due to the low spraying speed depending on the characteristics of the large-scale coal plant, poor spraying condition due to uneven spreading distribution, or excessive spreading, and work value is determined according to weather conditions. There is a problem. In addition, spraying by special vehicles requires expensive operation costs and poor accessibility to piles, making it difficult to implement scattering dust and low coal management measures by the surface hardening agent and slurry coating agent spraying method.

Company headquarters and low-profit shatter prevention technology using coal fly ash slurry of fluidized bed power plant Application No. 10-2009-0051244 (2009.5.14) Spraying device for fill material, 10-2010-0005931 (20100122) Spraying device for fill material, 10-2008-0073551 (20080728) Manure spreading device for arm roll vehicles, 20-2005-0009804 (20050407) Spraying device for mixed soil and seeds for greening business, 10-2004-0003452 (20040116)

Therefore, the present invention was conceived for the method of efficiently spraying surface hardening agent and slurry coating agent on the pile surface applied for the purpose of preventing odor, scattering dust and spontaneous ignition phenomenon in large-scale coal handling workplace, and existing large-capacity pile spraying work. It solves the problem that it takes a long time in the field, solves the problem of spreading such as uneven spreading and excessive spreading due to remote spraying, and solves the problem that spraying work is limited by weather conditions such as rainy weather and strong wind, The purpose of the present invention is to provide a high speed dispersing device equipped with a low coal loading slurry slurry coating agent that solves the problem of high cost of equipment investment.

The present invention is a coal ash dissolving means for preparing a primary slurry coating agent by dissolving fly ash, a power plant coal ash, in water; A primary slurry coating agent transfer pump and a removable transfer pipe for transferring the primary slurry coating agent to St / Re, which is a top and bottom coal facility that moves linearly on a rail in a low coal tanker; Secondary slurry coating agent preparation means for preparing a secondary slurry coating agent by injecting an additive into the transferred primary slurry coating agent on St / Re; Second slurry coating agent spray pump, compressor, high pressure hose and spray nozzle, high speed spraying module and spraying equipment operating equipment installed on St / Re to spray secondary slurry coating agent on pile surface for long distance high speed. Characterized in that the included.

The present invention configured as described above has the following effects.

The first effect of the present invention is to spread the slurry coating agent on the platform of the Stacker / Reclaimer (St / Re), which is a device that continuously transfers the coal pipe onto the top conveyor belt while moving the rail installed between the pile and the pile in the low coal tank. By installing the device module, it is possible to quickly spread the wide area low magazine from the advantage of the staging of the low-elevation pile of St / Re and the maneuverability of moving linearly along the pile.

The second effect of the present invention, because it moves on the rail, regardless of the ground state can work, close-spraying is possible, efficient spraying is possible,

The third effect of the present invention, by remotely operating the mounted injection module in the operating room has the effect of minimizing the labor required by securing the worker safety and adjustment of the person concerned in the conventional spraying method.

1 is a block diagram of a high speed spraying device equipped with a top and bottom coal installation low coal slurry coating agent
Figure 2 is a schematic view of the coal ash melting means and removable transfer pipe
3 and 4 is a schematic view of the secondary slurry coating agent preparation means and high speed spray module
Figure 5 is a schematic diagram showing the connection relationship with the other structure of the high speed spraying device mounted on the upper and lower coal installation low coal slurry slurry coating device.
Figure 6 is a schematic view of the upper and lower coal installations equipped with a slurry coating agent high speed spraying device
7 is a conceptual diagram of low-charging spraying of a slurry coating agent and a curing agent in a coal power plant
Figure 8 is a low coal and upper and lower coal installation operation plan

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a high-speed spreading device equipped with a high-low coal pile-up low coal slurry coating agent according to an embodiment of the present invention, Figure 2 is a schematic view of the coal ash dissolving means and removable transfer pipe, Figure 3 and 4 is a secondary slurry coating agent 5 is a schematic view of a preparation means and a high speed spray module, and FIG. 5 is a schematic view showing a connection relationship with other structures of the upper and lower coal installation-mounted low-charging slurry coating agent high speed spray device according to one embodiment of the present invention, and FIG. It is a top view of the operation of the upper and lower coal installations equipped with a slurry coating agent high speed spraying device according to an embodiment. 7 is a conceptual view of low coal spraying of a slurry coating agent and a hardening agent in a coal power plant, and FIG. 8 is a plan view of operating a low coal and upper and lower coal facilities.

As shown in Figure 1 to Figure 6, the upper and lower coal installation-mounted low coal slurry coating agent high speed spraying device 200 of the present invention is the upper and lower coal installation St / Re (250), coal ash dissolving means 230, primary slurry It is composed of a coating agent conveying pump 241, a removable conveying pipe 240, secondary slurry coating agent preparation means 210, secondary slurry coating agent high speed spray module 220 and the operating operation device 255 of the spraying equipment.

The upper and lower coal facilities, St / Re, are installed in the low coal yard, where coal can be coal fired from coal pipes to be burned or transferred to a combustion furnace.In large-capacity coal plants, many units are installed between piles and horizontally along rails. Operate while moving. Therefore, close proximity to the coal pile is possible and can be rotated back and forth, left and right rapid movement is possible. In addition, there is a free space on the platform as a heavy object for installing the device.

The slurry coating agent is first prepared in the form of slurry in the coal ash dissolving means 230 installed on the ground. A housing for dissolving coal ash Fly Ash (Fa) generated after combustion in the coal power plant 100 together with water (Wtr) It is injected into (231) and dissolved. The housing 231 has a dust generating preventer 234-a installed on the fly ash inlet 234 on the upper part of the housing 231 in order to prevent dust from occurring during the fly ash feeding process, and coal ash for melting fly ash. Dissolution agitator 235 and the transfer pump, and the pipe pipe washing water line 232 for washing and removing the clogging. The dust generator 234-a is in a state of being submerged in water surface by extending downward the outer circumference of the inlet to prevent dust scattering when the fly ash contacts the water surface.

The primary slurry coating agent (Fsl1) thus prepared is conveyed to the secondary slurry coating agent preparation unit 210 mounted on the St / Re 250 through the primary slurry coating agent delivery pump 241 and the removable transfer pipe 240. do.

Detachable transfer pipe 240 has a function to connect or disconnect the coal ash dissolving means 230 installed on the ground and the equipment mounted on the St / Re, connect for supplying the first slurry coating agent, and the moving spray of St / Re In order to separate. Accordingly, the present invention includes removable transfer pipe connection ports 243 and 244 for quick connection and separation of pipes, and removable transfer pipe connection shutoff valves 241 and 242 for preventing external leakage by blocking the slurry in the pipe.

On the other hand, the platform of St / Re includes a secondary slurry coating agent preparation means 210 and the secondary slurry coating agent high speed spray module 220 and the operating operation device 255 of the spraying equipment is included. The secondary slurry coating agent is an additive (Ad1, Ad2) in order to solve the problem of weakness of the coating bond strength during drying, which is a performance disadvantage of the primary slurry coating agent, and the coating film dissolves and breaks upon contact with moisture, and has no coating effect in strong winds and rainfall. It is prepared by adding.

The secondary slurry coating agent preparation unit 210 has a housing 211 for preparing a secondary slurry coating agent for storing the transferred primary slurry coating agent Fsl1, and a performance of the primary slurry coating agent in the upper portion of the housing 211. Additive injection equipment (214-a, 214-b) for reinforcing the stirrer, stirrer 215 for preparing the secondary slurry coating agent to promote the mixing reaction of the additives and then controlling the concentration of the secondary slurry coating agent and washing the high speed spray module And a second slurry coating agent high speed spray module washing water line 212 for preventing clogging. The prepared secondary slurry coating agent (Fsl2) is a viscous substance in a slurry or gel state, and requires a high pressure injection system.

Secondary slurry coating agent high speed spray module 220 is connected to the rear end of the secondary slurry preparation means 210, is installed at the rear end of the Sr / Re (250), the secondary slurry coating agent injection pump 224, air compressor 225, the secondary slurry coating agent spraying pipe 221, the mixer 222 and the spray nozzle 223 of the secondary slurry coating agent and the compressed air. The injection pump 224 is preferably capable of maintaining a discharge pressure of 5.0 kg / cm 2 or more. At this time, the compressed air (Air) of the air compressor 225 is used to evenly distribute the slurry droplets in the long-range spraying and spraying nozzle 223 of the secondary slurry coating agent. Compressed air pressure is preferably maintained at a pressure of 6.0-8.0 kg / cm2.

The secondary slurry coating agent spraying pipe 221 is preferably used a high pressure rubber hose material having good wear resistance, pressure resistance and flexibility to the coal ash slurry, the mixer 222 of the secondary slurry coating agent and compressed air is secondary It is connected to the rear end of the slurry coating agent spray pipe 221 and has an annular shape, in which a secondary slurry coating agent is introduced, and compressed air is introduced through the compressed air inlet 222-a formed at the outer circumference inlet. A plurality of baffles (222-b) are formed in a spiral in the lower annular shape to swirl the flow of air, thereby promoting mixing of the secondary slurry coating agent and air in the mixing sphere (222-c) and atomizing the droplets. And it has the effect of high speed injection.

The spray nozzle 223 is located at the end of the secondary slurry high speed spray module 220, and is located at the final end of the Sr / Re 250. The nozzle tip 223-a has a hemispherical shape to widen the spraying direction. It is shaped and forms a plurality of injection holes (223-b) radially.

On the other hand, the operating operation device 255 of the spraying facility is located in the operating operation room mounted on the upper end of the Sr / Re 250, the operation of the Sr / Re 250 and the operation of the spreading apparatus can be performed in parallel. Sr / Re operation includes horizontal movement and direction change operation for pile approach, and operation of spreading device includes operation of secondary slurry coating agent preparation means and secondary slurry coating agent high speed spray module mounted on St / Re. .

Figure 7 is a schematic diagram showing the application of a conventional coal-fired power plant in low coal, and the slurry coating agent (Fsl) using a fly ash (Fsl) and the curing agent is a schematic diagram of the state before the application of the present invention by spraying directly to the vehicle.

Figure 8 shows a low coal and upper and lower coal installation operating plan, showing the upper and lower coal operation and pile accessibility using the Sr / Re (250) in the low coal 300.

1 to 8, the high speed spraying apparatus 200 for the upper and lower coal installation equipment-type low-charging slurry coating agent has been described.

In addition, the above description is only an example of the present invention, and it will be apparent to those skilled in the art that various modifications may be made in detail. However, as long as these modifications satisfy the technical idea of the present invention, they should be included within the scope of the present invention, which can be confirmed through the utility model registration claims.

The places to which the present invention can be applied are mainly coal-fired power plants, steel mills and coal storages equipped with Sr / Re, which are upper and lower coal installations, and can be applied to a company head installed with mobile access means according to Sr / Re.

In addition, the spraying material to which the present invention can be applied is mainly a slurry-type coating agent, and may additionally correspond to liquid and particulate solid materials that can be sprayed to the low coal pile and the company site by Sr / Re.

Claims (3)

A housing 231 for coal ash melting;
Fly Ash inlet is located in the upper portion of the housing 231 Fly Ash flows into;
A dust generation preventor installed at a rear end of the fly ash inlet to prevent dust generation when the fly ash is dissolved;
A water inlet located at an upper portion of the housing and into which water for dissolution is introduced;
Located in the side of the housing, the transfer pipe washing water line formed branched with the water inlet; And
Coal ash dissolving means 230 is located on the outer periphery of the housing to dissolve Fly Ash to include a coal ash dissolving agitator for preparing the first slurry coating agent;
It is connected to the rear end of the coal ash dissolving means 230, the primary slurry coating agent transfer pump 241 for transferring the primary slurry coating agent;
A housing 211 for preparing a secondary slurry coating agent;
Located at the top of the housing 211, the primary slurry coating agent inlet for the introduction of the primary slurry coating agent;
An additive injection facility (214-a, 214-b) positioned above the housing 211 for injecting first and second additives to improve the performance of the primary slurry coating agent;
A stirrer for preparing a secondary slurry coating agent for the reaction mixture of the additive is located at the lower periphery of the housing 211;
Located at the top of the housing 211 water inlet for secondary slurry coating agent concentration control; And
Secondary slurry coating agent preparation means 210, characterized in that it comprises a washing water line of the secondary slurry coating agent high speed spray module formed on the side of the housing 211 and branched with the water inlet;
A secondary slurry coating agent transfer pump 224 connected to a rear end pipe of the housing 211;
A secondary slurry coating agent spraying pipe 221 installed at a rear end of the secondary slurry coating agent conveying pump 224;
A mixer 222 of a secondary slurry coating agent and compressed air connected to the spraying pipe 221 to mix the secondary slurry coating agent with compressed air;
An air compressor 225 for supplying compressed air to the mixer 222; And the secondary slurry coating agent high speed spray module 220, characterized in that it comprises a spray nozzle 223 and
It is configured to include the operation control device (255) of the spraying equipment,
The coal ash dissolving means 230 is installed on the ground, the secondary slurry coating agent preparation means 210, the secondary slurry coating agent high speed spray module 220 and the operating device 255 of the spraying equipment is a Stacker / Reclaimer 250 Mounted on the upper, upper and lower coal installation slurry high-speed slurry coating agent characterized in that it comprises a removable conveying pipe 240 to enable the connection and separation of the coal ash dissolving means 230 and the secondary slurry coating agent preparation means (210). Spreader. The method of claim 1,
The mixer 222 of the secondary slurry coating agent and the compressed air has air flowing in the outer circumference, slurry flowing in the center, and a baffle 222-b for promoting the vortex of the outer cycle, and the secondary slurry coating agent and the air. The high speed spraying device of the upper and lower carbon equipment mounted low carbon slurry coating agent, characterized in that mixing spheres (222-c) are formed for enhancing mixing and atomizing droplets. The method according to claim 1 or 2,
The place where it can be installed is upper and lower coal facilities of coal power plant, steel mill, and coal storage station. Slurry coating agent high speed spraying device.

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