Full-automatic environment-friendly clean ash discharging device

Abstract

The utility model relates to a full-automatic environment-friendly clean ash discharging device which comprises an ash bin, a tubular spiral conveyor and a sealed belt conveyor which are communicated in sequence. A first control valve is arranged at an upper inlet of the slag bin, a second control valve is arranged at a lower outlet of the slag bin, and the slag bin is communicated with an inlet of the tubular spiral conveyor through the second control valve. Level gauges used for monitoring the material level of the slag bin are arranged on the upper portion and the lower portion of the side wall of the slag bin respectively, a temperature detector used for monitoring the temperature in the slag bin is further arranged on the side wall of the slag bin, the temperature in the slag bin is prevented from being too high, a spraying device is arranged in the slag bin, and ash can be conveniently sprayed and cooled; on-off control of a water path is facilitated; a fourth control valve is arranged at an outlet of the tubular spiral conveyor, and the tubular spiral conveyor is communicated with the sealed belt conveyor through the fourth control valve. According to the utility model, the sealed conveying of ash can be realized, the leakage of dust is avoided, and meanwhile, the full-automatic slag discharge control can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gasification furnaces, in particular to a fully automatic, environmentally friendly and clean ash and slag discharging device. Background Art

[0002] A gasifier is a reactor used to produce coal gas, water gas and semi-water gas. The gas produced by it can be used as industrial fuel. At the same time, the gasifier will also produce ash after burning coal. The ash is stored in the slag bin. In the past, the ash was handled in the following way: a bulker is arranged at the outlet of the slag bin. The bulker is used as a pipeline to transport the ash in the slag bin downwards through the bulker to the slag truck, which then transports it to the slag yard.

[0003] The previous ash treatment methods have the following disadvantages: the entire slag discharge process must be manually controlled, requiring the collaboration of multiple people, and the degree of automation is low. A certain amount of dust will be generated during slag discharge and transportation, causing air pollution, especially when the bulk loader and slag truck may not be sealed tightly during slag discharge, resulting in a lot of dust leakage. The slag in the slag bin has a certain temperature, and a large amount of slag gathers together, causing the temperature to rise. In addition, there are residual gases such as oxygen and coal gas in the slag bin, which is not conducive to the environmentally friendly discharge of slag and will also endanger equipment safety. Summary of the invention

[0004] In order to solve the problems that the discharge of ash and slag requires the cooperation of multiple people and has a low degree of automation, and the slag discharge may cause dust leakage and pollute the environment, the utility model provides a fully automatic, environmentally friendly and clean slag discharge device, which realizes the automatic operation of slag discharge through automated control means, and can ensure the sealed transportation of ash and slag, thereby avoiding the leakage of dust during the slag discharge process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A fully automatic, environmentally friendly and clean ash and slag discharge device, comprising a slag bin, a tubular screw conveyor and a sealed belt conveyor which are connected in sequence;

[0007] A control valve 1 is provided at the upper entrance of the slag bin and a control valve 2 is provided at the lower exit, so as to facilitate the control of the inlet and outlet of the slag bin. The slag bin is connected with the inlet of the tubular screw conveyor through the control valve 2.

[0008] The upper and lower side walls of the slag bin are respectively provided with level meters for monitoring the material level of the slag bin, which is convenient for monitoring the height of the ash and slag inventory. The side walls of the slag bin are also provided with a thermometer for monitoring the temperature in the slag bin to prevent the temperature in the slag bin from being too high. A spray device for cooling is provided in the slag bin, which can conveniently spray and cool the ash and slag. One end of the spray device passes through the slag bin and is connected to a control valve three, which is convenient for controlling the on-off of the water channel;

[0009] A control valve four is provided at the outlet of the tubular screw conveyor, and the tubular screw conveyor is connected to the sealed belt conveyor through the control valve four.

[0010] Furthermore, the control valve 1, the control valve 2 and the control valve 4 are all hydraulically driven seat plate valves, which have the advantages of strong tightness and long service life and are suitable for slag discharge environments.

[0011] Furthermore, the spray device and the thermometer are arranged in sequence from top to bottom, which is convenient for monitoring the application effect of the spray device. The spray device includes a spray pipe, a nozzle and a water supply pipe. The spray pipe is bent in a circular shape and arranged on the inner wall of the slag bin. A plurality of the nozzles are evenly distributed on the spray pipe, which is convenient for uniform water discharge in the circumferential direction of the slag bin. The spray pipe is connected to the water supply pipe, and the water supply pipe passes through the slag bin and is connected to the control valve three, which is convenient for the connection control between the water supply pipe and the spray pipe. The control valve three is a solenoid valve.

[0012] Furthermore, the nozzle is inclined downward toward the bottom of the slag bin, and a shielding ring is provided on the inner wall of the slag bin. The shielding ring is arranged inclined downward to guide the ash to the middle position of the slag bin. There is an angle between the shielding ring and the inner wall of the slag bin. The shielding ring covers the spray pipe and the nozzle to prevent the falling ash from colliding with the spraying device.

[0013] Furthermore, the tubular screw conveyor is arranged upwardly and tilted, and the tubular screw conveyor and the slag bin are respectively connected with steam replacement devices, and the coal gas and other gases therein can be replaced by utilizing the steam blowing principle; a plurality of breaking hammers are also arranged on the screw shaft of the tubular screw conveyor, and the breaking hammers are arranged at the inlet position of the tubular screw conveyor to facilitate the effective crushing of the ash and slag.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structural design. The slag bin and the tubular screw conveyor are connected through a second control valve, the tubular screw conveyor and the sealed belt conveyor are connected through a fourth control valve, the slag bin, the tubular screw conveyor and the sealed belt conveyor are all equipment with a sealing structure, and the three are connected in sequence to form a sealed conveying pipeline, which can transport the ash and slag to the slag yard for stacking in a sealed state, thereby avoiding the leakage of dust and preventing air pollution.

[0016] Two material level meters are arranged in the slag bin of the utility model, which are convenient for monitoring the storage amount of ash and slag. According to the set high and low levels, the control valve 2, the tubular screw conveyor, the control valve 4 and the sealed belt conveyor can be automatically controlled to start, so as to discharge the ash and slag in time.

[0017] The utility model also has a thermometer and a matching spray device in the slag bin to monitor the ambient temperature in the slag bin. Once the temperature is too high, the spray device is automatically started to reduce the ash temperature in time to ensure that the ash is in a suitable temperature environment. The screw shaft of the tubular screw conveyor can be detached with a breaker hammer, which is convenient for replacing the breaker hammer. At the same time, the breaker hammer can be used to break larger ash to ensure smooth slag discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a fully automatic, environmentally friendly and clean ash and slag discharging device.

[0019] Figure 2 The utility model is a schematic diagram of a spray device of a fully automatic, environmentally friendly and clean ash and slag discharge device.

[0020] Figure 3 The utility model is a schematic diagram of a breaker hammer of a fully automatic, environmentally friendly and clean ash and slag discharge device.

[0021] The numbers in the attached drawings are: 1 slag bin, 2 tubular screw conveyor, 3 sealed belt conveyor, 4 control valve one, 5 control valve two, 6 control valve three, 7 control valve four, 8 level meter, 9 thermometer, 10 spray device, 11 spray pipe, 12 nozzle, 13 water supply pipe, 14 shielding ring, 15 screw shaft, 16 breaking hammer, 161 pyramid, 162 cylinder, 17 breaking teeth, 18 mounting bolts, 19 steam displacement device. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings:

[0023] like Figure 1~Figure 3 As shown, a fully automatic environmentally friendly and clean ash and slag discharge device comprises a slag bin 1, a tubular screw conveyor 2 and a sealed belt conveyor 3 which are connected in sequence. The slag in the slag bin 1 can be supplied to the sealed belt conveyor 3 by the tubular screw conveyor 2 to realize the sealed transportation of the slag. The sealed belt conveyor 3 finally transports the slag to a slag yard for storage. Figure 1 shown.

[0024] The slag bin 1 is used for temporarily storing ash. A control valve 4 is provided at the entrance above the slag bin 1. Ash generated by the gasifier enters the slag bin 1 through the control valve 4. In order to monitor the amount of ash, level meters 8 for monitoring the material level of the slag bin 1 are provided on the upper and lower side walls of the slag bin 1. The upper and lower level meters 8 can monitor the high and low levels of the ash and can truly reflect the spatial height of the ash temporarily stored in the slag bin 1.

[0025] The ash flowing into the slag bin 1 through the control valve 4 has a certain residual temperature. In order to avoid excessive temperature accumulation, a thermometer 9 for monitoring the temperature in the slag bin 1 is provided on the side wall of the slag bin 1, so as to realize the monitoring of the ambient temperature in the slag bin 1.

[0026] On the premise that the slag bin 1 is equipped with a thermometer 9, if the monitored temperature is too high, certain control measures are required to cool it down. For this purpose, a spray device 10 for cooling is provided in the slag bin 1, and one end of the spray device 10 passes through the slag bin 1 and is connected to a control valve 3 6, so as to conveniently control the start and stop of the spray device 10.

[0027] In this embodiment, the spray device 10 and the thermometer 9 are arranged in sequence from top to bottom, and the thermometer 9 can timely monitor the spraying effect of the spray device 10. The spray device 10 is close to the top of the slag bin 1. The spray device 10 includes a spray pipe 11, a nozzle 12 and a water supply pipe 13. The spray pipe 11 is bent in a circular shape and arranged on the inner wall of the slag bin 1. A plurality of nozzles 12 are evenly arranged on the spray pipe 11, which can evenly spray water into the slag bin 1. The nozzle 12 is tilted downward toward the bottom of the slag bin 1. The nozzle 12 adopts an atomizing nozzle 12, which can reduce the water consumption and prevent the ash from being excessively wetted. Figure 2 shown.

[0028] In order to realize the water supply, the spray pipe 11 is connected with a water supply pipe 13, and the water supply pipe 13 passes through the slag bin 1 and is connected with a control valve 3 6, which is a solenoid valve. The external water source is connected with the water supply pipe 13, and water is supplied to the spray pipe 11 through the water supply pipe 13, and finally sprayed out by the nozzle 12, which can realize the cooling of the ash in the slag bin 1, and the control valve 3 6 can control the on and off of the water supply.

[0029] In order to prevent the falling ash from colliding with the spray device 10 downward, a shielding ring 14 is also provided on the inner wall of the slag bin 1. The shielding ring 14 is arranged obliquely downward to guide the ash to the middle of the slag bin 1. There is an angle between the shielding ring 14 and the inner wall of the slag bin 1. The shielding ring 14 is arranged above the spray device 10, and then the shielding ring 14 covers the spray pipe 11 and the nozzle 12, thereby shielding the spray device 10 and preventing the ash from flowing to the inner wall of the slag bin 1 and colliding with the spray pipe 11 and the nozzle 12.

[0030] In order to discharge the ash in the slag bin 1, a control valve 2 5 is provided at the outlet below the slag bin 1, and the slag bin 1 is connected to the inlet of the tubular screw conveyor 2 through the control valve 2 5. Thus, the ash can enter the tubular screw conveyor 2, and the tubular screw conveyor 2 is a closed structure to prevent dust from leaking out.

[0031] Since the ash in the slag bin 1 is of different sizes, in order to ensure smooth transportation by subsequent equipment, the ash needs to be crushed, so that the larger ash is crushed into smaller ash. Therefore, a plurality of crushing hammers 16 are also arranged on the screw shaft 15 of the tubular screw conveyor 2. The crushing hammers 16 are arranged at the inlet position of the tubular screw conveyor 2, such as Figure 3 shown.

[0032] Here, the breaker 16 has a pyramid 161 above and a cylinder 162 below. A plurality of cone-shaped crushing teeth 17 are arranged on the side wall of the pyramid 161 above the breaker 16. The cylinder 162 below the breaker 16 is threadedly connected in the screw shaft 15, so that the breaker 16 can be detachably installed. When the screw shaft 15 is in circular motion, it drives the breaker 16 to rotate, so that the ash in the tubular screw conveyor 2 is conveyed and crushed at the same time, so that larger ash can be crushed.

[0033] In order to ensure the stable operation of the breaker 16, a square groove is provided on the surface of the screw shaft 15 (not shown in the figure). The size of the groove matches the bottom size of the pyramid 161 above the breaker 16, so that the joint above and below the breaker 16 can be placed in the screw shaft 15, thereby increasing the installation strength of the breaker 16 and preventing the breaker 16 from breaking.

[0034] At the same time, mounting bolts 18 are provided on the spiral shaft 15 , and the mounting bolts 18 are arranged radially along the spiral shaft 15 . The heads of the mounting bolts 18 extend into the cylinder 162 below the breaker hammer 16 and are threadedly connected thereto, thereby improving the secure installation of the breaker hammer 16 .

[0035] The tubular screw conveyor 2 is arranged upwardly and the height of the ash gradually increases during the process of the ash moving from the inlet to the outlet of the tubular screw conveyor 2. A control valve 47 is provided at the outlet of the tubular screw conveyor 2, and the tubular screw conveyor 2 is connected to the sealed belt conveyor 3 through the control valve 47. Here, the control valve 14, the control valve 25 and the control valve 47 are all hydraulically driven seat plate valves.

[0036] In order to control the automatic operation of the entire ash and slag discharge device, a control cabinet is also included, which is not shown in the figure. Control valve 1 4, control valve 2 5, control valve 3 6 and control valve 4 7 are all connected to the control cabinet and are controlled by the control cabinet for opening and closing. The level meter 8 and the thermometer 9 feed back the monitoring signal to the control cabinet, and the control cabinet controls the operation of related equipment. At the same time, the tubular screw conveyor 2 and the sealed belt conveyor 3 are also connected to the control cabinet and are controlled by the control cabinet for start and stop.

[0037] The principle of the utility model is as follows: the ash produced by the gas generator enters the slag bin 1 through the control valve 1 4. When the material level meter 8 detects that the ash volume reaches a high level, a feedback signal is given to the control cabinet, and the control cabinet controls the control valve 1 4 to automatically close, and at the same time controls the sealed belt conveyor 3 to start, and then opens the control valve 2 5 and the control valve 4 7. At this time, the slag bin 1, the tubular screw conveyor 2 and the sealed belt conveyor 3 are connected. Then the ash flows into the tubular screw conveyor 2 first, and the ash is crushed by the breaker 16. Then, under the action of the tubular screw conveyor 2, the ash is transferred to the sealed belt conveyor 3, and the ash is directly transported to the slag yard in a sealed form for centralized stacking.

[0038] In the above process of continuous sealed discharge of ash, when the level meter 8 detects that the ash amount has reached a low level, a feedback signal is given to the control cabinet, which controls the control valve 2 5 to close and the control valve 1 4 to reopen, and then delays the control of the tubular screw conveyor 2 and the control valve 4 7 to close, thereby completing the ash discharge work of the single gasifier.

[0039] It should be noted that: 1. The sealed belt conveyor 3 is relatively long and has a sealed protective structure, which makes it difficult for dust to leak out. It is suitable for conveying dust in an environment with large dust. A sealed scraper conveyor can also be used to replace the tubular screw conveyor 2 to transport ash and slag. 2. There is not only one gasifier in the enterprise. If there are multiple gasifiers, multiple slag bins 1, accessories on the slag bin 1 and tubular screw conveyors 2 must be arranged, so that sealed slag can be discharged for multiple gasifiers. Multiple gasifiers are connected in parallel with a sealed belt conveyor 3. As a result, when the ash and slag discharge operation of a gasifier is completed, the sealed belt conveyor 3 does not stop. After other gasifiers also use the matching slag bin 1 and tubular screw conveyor 2 to perform sealed slag discharge, the sealed belt conveyor 3 can stop running and the entire ash and slag discharge work is completed.

[0040] In the above ash discharge process, if the thermometer 9 detects that the temperature in the slag bin 1 is too high, the control cabinet will control the control valve 3 6 to open, and the water source will be introduced into the spray pipe 11 and sprayed out by the nozzle 12 in the form of atomization, so as to reduce the ash temperature and avoid excessive temperature accumulation.

[0041] In order to optimize the product structure, the tubular screw conveyor 2 and the slag bin 1 are respectively connected with a steam replacement device 19. The steam replacement device 19 passes steam into the slag bin 1 and the tubular screw conveyor 2, and the harmful gas remaining in the slag bin 1 and the tubular screw conveyor 2 can be replaced by steam purge to ensure the safety of equipment operation.

[0042] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A fully automatic, environmentally friendly and clean ash and slag discharge device, characterized in that: It comprises a slag bin (1), a tubular screw conveyor (2) and a sealed belt conveyor (3) which are connected in sequence; A control valve 1 (4) is provided at the upper inlet of the slag bin (1), and a control valve 2 (5) is provided at the lower outlet thereof, and the slag bin (1) is connected to the inlet of the tubular screw conveyor (2) via the control valve 2 (5); Level meters (8) for monitoring the material level of the slag bin (1) are respectively arranged on the upper and lower sides of the slag bin (1); a thermometer (9) for monitoring the temperature in the slag bin (1) is also arranged on the side wall of the slag bin (1); a spray device (10) for cooling the temperature is arranged in the slag bin (1); one end of the spray device (10) passes through the slag bin (1) and is connected to a control valve three (6); A control valve four (7) is provided at the outlet of the tubular screw conveyor (2), and the tubular screw conveyor (2) is connected to the sealed belt conveyor (3) via the control valve four (7).

2. A fully automatic, environmentally friendly and clean ash and slag discharge device according to claim 1, characterized in that: The control valve one (4), the control valve two (5) and the control valve four (7) are all hydraulically driven seat valves.

3. The fully automatic, environmentally friendly and clean ash and slag discharge device according to claim 1 is characterized in that: The spray device (10) and the thermometer (9) are arranged in sequence from top to bottom. The spray device (10) comprises a spray pipe (11), a spray head (12) and a water supply pipe (13). The spray pipe (11) is bent in a circular shape and arranged on the inner wall of the slag bin (1). A plurality of the spray heads (12) are evenly arranged on the spray pipe (11). The spray pipe (11) is connected to the water supply pipe (13). The water supply pipe (13) passes through the slag bin (1) and is connected to the control valve three (6). The control valve three (6) is a solenoid valve.

4. A fully automatic, environmentally friendly and clean ash and slag discharge device according to claim 3, characterized in that: The spray head (12) is tilted downward toward the bottom of the slag bin (1); the inner wall of the slag bin (1) is also provided with a shielding ring (14); the shielding ring (14) is arranged tilted downward; an angle is formed between the shielding ring (14) and the inner wall of the slag bin (1); the shielding ring (14) covers the spray pipe (11) and the spray head (12).

5. The fully automatic, environmentally friendly and clean ash and slag discharge device according to claim 1, characterized in that: The tubular screw conveyor (2) is arranged obliquely upward, and the tubular screw conveyor (2) and the slag bin (1) are respectively connected to a steam replacement device (19); a plurality of crushing hammers (16) are also arranged on the screw shaft (15) of the tubular screw conveyor (2), and the crushing hammers (16) are arranged at the inlet position of the tubular screw conveyor (2).

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