CN218909068U - Coking dust removal ash discharging system - Google Patents
Coking dust removal ash discharging system Download PDFInfo
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- CN218909068U CN218909068U CN202320196160.2U CN202320196160U CN218909068U CN 218909068 U CN218909068 U CN 218909068U CN 202320196160 U CN202320196160 U CN 202320196160U CN 218909068 U CN218909068 U CN 218909068U
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Abstract
The utility model discloses a coking dust removal system, and relates to the technical field of coking dust removal conveying. The coke dust removal ash discharging system comprises an air ash mixing pipe, wherein an ash bin is connected above the air ash mixing pipe, an inert gas supplementing pipe and a dust removal ash sucking and discharging tank car connecting structure are connected to the air ash mixing pipe, and an air supplementing pipe is connected to the air ash mixing pipe; the air supplementing pipe is used for sucking air from the atmosphere when the pressure in the air ash mixing pipe is too low and the inert gas supplementing is insufficient so as to prevent the pressure in the air ash mixing pipe from being too low. The mode that the air pipeline is additionally arranged on the air-ash mixing pipe of the coking dust-removing ash discharging system can open the air pipeline when the negative pressure ash conveying operation starts, and the air-ash mixing pipe and the compression-resistant telescopic rubber pipe are prevented from being shrunken when the electric ash discharging valve of the hydraulic gate valve is opened from a closed state to have certain hysteresis and the dust-absorbing and discharging tank car is started to have larger suction force.
Description
Technical Field
The utility model relates to the technical field of coking dust removal ash conveying, in particular to a coking dust removal ash discharging system.
Background
Along with the increasingly strict environmental protection and control requirements, various powdery materials including dust generated by coking are conveyed in a clean mode. During the coking production process, a great amount of flue gas containing coal dust and coke dust is produced, and the generated dust includes dry quenching environment dust, coke oven coke discharging dust, coke transporting dust, coal blending crusher dust, etc. the dust-containing flue gas is filtered and separated by matched dust removing equipment to obtain the coking dust. The coking dust contains coke powder and coal dust, and the risk of dust explosion exists.
The fly ash in each dust collecting equipment ash bin is generally conveyed to the ash bin in a centralized manner by adopting a pneumatic ash conveying mode, then the coking fly ash in the ash bin is subjected to spray humidification treatment, then the coking fly ash is manually collected and packed by a ton bag at an ash discharging port of the ash bin, and then the ton bag filled with the coking fly ash is forked into a truck carriage by utilizing a forklift, so that solid waste transportation is completed in a car transportation mode.
The production amount of coking dust is large, the capacity of a ton bag is limited, the bag is filled for many times and is matched by a plurality of people, dust suppression measures are not provided on the ton bag dust site, and the transfer disposal mode of collecting and packing the dust is characterized by secondary dust emission, environmental pollution, high labor intensity, low automation degree, low transfer efficiency, high transfer frequency and the like, so that the requirements of clean transportation cannot be met.
In the prior art, although the technical problems are solved by negative pressure conveying of coking dust, the following technical problems still remain unsolved.
The prior art CN202220073077.1 discloses an attraction device for discharging dust and powdery materials, which utilizes a gas blowing pipe to blow gas along the movement direction of the dust or powdery materials, and utilizes the blown gas to assist in driving the dust or powdery materials to move, thereby improving the discharging speed and the discharging working efficiency. According to the different properties of the dust or powdery material, the air with different properties is selected to blow, for example, the common dust or powdery material only needs to be supplemented with outdoor air, the dust and powdery material with high density needs to be supplemented with compressed air, and the dust or powdery material with high temperature and gas needs to be supplemented with nitrogen to assist blowing. However, when the electric ash discharge valve of the hydraulic gate valve is opened from a closed state at the beginning stage of ash conveying operation, and under the condition that the filling amount of nitrogen serving as protective gas is insufficient, the air ash mixing pipe and the compression-resistant telescopic rubber pipe are easy to be shrunken by the excessive suction force just started by the ash removal suction and discharge tank truck.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a coking dust removal ash discharge system, which solves the following technical problems:
when the negative pressure ash conveying operation starts, the electric ash discharge valve of the hydraulic gate valve is opened from a closed state with certain hysteresis, and under the condition that the filling amount of nitrogen serving as protective gas is insufficient, the air ash mixing pipe and the compression-resistant telescopic rubber pipe are easy to be absorbed by the excessive suction force just started by the dust removal ash absorbing and discharging tank truck.
(II) technical scheme
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the coking dust removal ash discharging system comprises a gas ash mixing pipe, wherein an ash bin is connected above the gas ash mixing pipe, an inert gas supplementing pipe and a dust removal ash sucking and discharging tank car connecting structure are connected to the gas ash mixing pipe, the inert gas supplementing pipe is used for introducing inert gas into the gas ash mixing pipe, the dust removal ash sucking and discharging tank car connecting structure is used for being connected with the dust removal ash sucking and discharging tank car, and an air supplementing pipe is connected to the gas ash mixing pipe;
the air supplementing pipe is used for sucking air from the atmosphere when the pressure in the air ash mixing pipe is too low and the inert gas supplementing is insufficient so as to prevent the pressure in the air ash mixing pipe from being too low.
Preferably, the air ash mixing pipe is connected with an emptying pipe.
Preferably, an emptying pipe electric valve is arranged on the emptying pipe.
Preferably, the bottom of ash bin is connected with the hydraulic gate valve, the bottom of hydraulic gate valve is connected with the connecting pipe, the bottom of connecting pipe is connected with electronic ash discharge valve, the bottom of electronic ash discharge valve is connected with the gas ash mixing tube through the blanking pipe.
Preferably, the connecting structure of the dust-removing dust sucking and discharging tank truck comprises a compression-resistant telescopic rubber pipe, one end of the compression-resistant telescopic rubber pipe is connected with a gas-dust mixing pipe, the other end of the compression-resistant telescopic rubber pipe is connected with a dust-discharging quick connector, and the dust-discharging quick connector is used for being connected with the dust-removing dust sucking and discharging tank truck.
Preferably, the air supplementing pipe is provided with an air supplementing regulating valve.
Preferably, the air supplementing pipe is provided with a one-way check valve, and the one-way check valve is arranged between the air supplementing adjusting valve and the air ash mixing pipe.
Preferably, the inert gas supplementing pipe is provided with an inert gas control valve.
Preferably, the inert gas supplementing pipe is a nitrogen supplementing pipe, and the inert gas control valve is a nitrogen control valve.
Preferably, a pressure sensor is arranged on the gas ash mixing pipe.
(III) beneficial effects
The utility model provides a coking dust removal ash discharge system. The beneficial effects are as follows:
the mode that the air pipeline is additionally arranged on the air-ash mixing pipe of the coking dust-removing ash discharging system can open the air pipeline when the negative pressure ash conveying operation starts, and the air-ash mixing pipe and the compression-resistant telescopic rubber pipe are prevented from being shrunken when the electric ash discharging valve of the hydraulic gate valve is opened from a closed state to have certain hysteresis and the dust-absorbing and discharging tank car is started to have larger suction force.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: the device comprises a 1-ash bin, a 2-hydraulic gate valve, a 3-connecting pipe, a 4-electric ash discharge valve, a 5-blanking pipe, a 6-nitrogen supplementing pipe, a 61-nitrogen control valve, a 7-ash mixing pipe, an 8-pressure sensor, a 9-emptying pipe, a 91-exhaust pipe electric valve, a 10-air supplementing pipe, a 101-one-way check valve, a 102-air supplementing regulating valve, a 103-air inlet, a 11-compression-resistant telescopic rubber pipe, a 12-ash discharging quick connector and a 13-dust sucking and discharging tank car.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
the automatic coke-dust discharging device is arranged at the lower part of each coke-dust bin through flange connection and comprises ash bins, hydraulic gate valves 2, connecting pipes 3, electric ash discharging valves 4, blanking pipes 5, nitrogen supplementing pipes 6, nitrogen control valves 61, air ash mixing pipes 7, pressure sensors 8, emptying pipes 9, exhaust pipe electric valves 91, air supplementing pipes 10, one-way check valves 101, air supplementing regulating valves 102, air inlets 103, compression-resistant telescopic rubber pipes 11 and ash discharging quick connectors 12, wherein the mutual positions and the relations of the parts are shown in figure 1. The functions and characteristics of each component are as follows:
A. the hydraulic gate valve 2 is used for separating the automatic discharging device of the coking dust and the dust bin;
B. the electric ash discharge valve 4 is used for controlling the ash discharge speed of the coking dust removal ash;
C. the inner wall of the gas-ash mixing horizontal pipe 7 is coated with a special ceramic wear-resistant smooth coating so as to reduce friction between the dust-removing ash and the pipe wall, prevent blockage and prolong the service life;
D. the pressure sensor 8 is used for detecting pressure change in the gas-ash mixing transverse pipe 7;
E. the exhaust pipe 9 is arranged at the vertical upper part of the gas-ash mixing transverse pipe 7 and comprises an exhaust pipe electric valve 91 for automatically exhausting gas when the pressure in the gas-ash mixing transverse pipe 7 is overlarge;
F. the air supplementing pipe 10 is arranged on the side surface of the air ash mixing transverse pipe 7 and comprises a one-way check valve 101, an air supplementing regulating valve 102, an air inlet 103 and other parts, and is used for sucking air from the atmosphere when the pressure in the air ash mixing transverse pipe 7 is too low and the nitrogen is not fully supplemented so as to prevent the system pressure from being too low, and the one-way check valve 101 is used for controlling the one-way flow of the air; the air intake 103 is used for sucking air.
G. The compression-resistant telescopic rubber pipe 11 is made of a special compression-resistant corrugated rubber pipe, is smooth in inner part and has the characteristics of being flexible and telescopic, one end of the compression-resistant telescopic rubber pipe is connected with the gas-ash mixing transverse pipe 7, and the other end of the compression-resistant telescopic rubber pipe is provided with the ash discharging quick connector 12, so that the compression-resistant telescopic rubber pipe can be flexibly connected with the dust removing ash sucking and discharging tank truck 13 on site.
2 operation control of automatic discharging device for coking dust-removing ash
A. And programming a control program of the automatic dust removing device, and presetting a related control parameter range.
B. The gas-ash mixing transverse pipe 7 is provided with a pressure sensor 8 for detecting the pressure change condition of the gas-ash mixing transverse pipe 7 in real time.
C. Because the coke powder and the coal dust have the risk of dust explosion, the dust-removing dust suction and discharge tank truck 13 is required to adopt nitrogen protection for conveying when sucking the coking dust in the dust-removing gas mixing transverse pipe 7, and the nitrogen is provided by connecting the nitrogen supplementing pipe 6 with an external nitrogen source.
D. The control program of the automatic dust removing and discharging device is responsible for controlling and adjusting the opening of the nitrogen control valve 61 so as to ensure that the nitrogen supplementing pipe 6 provides nitrogen with uniform and stable pressure and flow into the gas-ash mixing transverse pipe 7; meanwhile, the opening adjustment of the air supplement regulating valve 102 and the exhaust pipe electric valve 91 before ash conveying operation is carried out, so that the pressure in the air ash mixing transverse pipe 7 is ensured to meet the operation requirement, and the problems of pipeline shrinkage caused by instant overlarge suction force after the dedusting ash suction and exhaust tank truck 13 starts ash suction, pipe inner overpressure caused by pipeline blockage during ash conveying and the like are prevented.
E. The control program of the automatic dust removing and discharging device is also responsible for controlling the electric dust discharging valve 4 to discharge dust according to the set dust discharging rotating speed and controlling the opening and closing of the hydraulic gate valve 2.
F. The pressure sensor 8 feeds back the pressure detected in real time to a control program of the automatic ash discharge device, and the control program is responsible for controlling and adjusting the opening degrees of the nitrogen control valve 61, the air supplement regulating valve 102 and the discharge pipe electric valve 91 according to a set pressure control range so as to control the pressure in the air ash mixing horizontal pipe 7 within the ash conveying operation pressure requirement range all the time.
G. Before the coking dust discharging operation, the fast sealing and reliable connection between the dust discharging fast joint 12 and the dust sucking and discharging tank truck 13 is completed manually.
H. All the dust-collecting tank trucks 13 are ready, and start the dust-collecting switch to start the dust-collecting vacuum suction operation;
I. after the ash conveying operation starts, the hydraulic gate valve 2 and the electric ash discharging valve 4 are opened from the closed state with certain hysteresis, in order to prevent the pipeline from being shrunken by the excessive suction force just started by the dedusting ash suction and discharge tank truck 13, the opening degrees of the nitrogen control valve 61, the air supplement regulating valve 102 and the discharge pipe electric valve 91 are automatically controlled and regulated by a program to ensure that the pressure in the air ash mixing transverse pipe 7 meets the operation requirement, and the hydraulic gate valve 2 and the electric ash discharging valve 4 are gradually opened to start ash discharging, at the moment, the program rapidly closes the air supplement regulating valve 102 and the discharge pipe electric valve 91, and simultaneously regulates the opening degree of the nitrogen control valve 61, so that the system is maintained at the normal ash conveying operation pressure.
J. During normal ash conveying, operators should keep away from the rear of the outer tank body with the ash discharge opening of 4 meters to strictly prevent standing persons from standing at the air inlet, so that nitrogen choking is prevented. When the ash conveying operation is finished, the ash sucking and discharging tank truck 13 sends out an audible and visual prompt, and the control program of the automatic ash discharging device is closed after manual confirmation.
K. The quick coupling 12 for removing the dust is connected with the dust suction and discharge tank truck 13, and before the quick coupling is removed, the pressure in the gas-dust mixing pipe 7 is confirmed to be zero again on site, and the hydraulic gate valve 2, the electric dust discharging valve 4, the nitrogen control valve 61 and the like are closed, so that accidents are prevented.
And L, finishing the automatic dust removal operation.
Among them, it is noted that: although there is a risk of knocking by sucking air into the air-ash mixing pipe 7, ash discharge is not started at the ash conveying start stage, air is not mixed with ash in a large amount, the ash is not rubbed with a pipeline to generate heat, the explosion temperature is not reached (three elements of combustion are not completely simultaneously present), and less air is sucked at the ash conveying start stage, so that the concentration of knocking is difficult to reach. Therefore, when a small amount of air enters the air-ash mixing pipe 7 in the ash conveying starting stage, the air-ash mixing pipe 7 and the compression-resistant telescopic rubber pipe 11 can be prevented from being imbibed, deflagration can not occur due to the small amount of air, and a person skilled in the art can close the air supplementing regulating valve 102 after the ash conveying starting stage is finished (the pressure in the air-ash mixing pipe 7 is stable, the hydraulic gate valve 2 and the electric ash discharging valve 4 are opened).
It should be noted that, in the description of the present utility model, the positional or positional relation indicated by the terms such as "upper", "lower", "left", "right", "front", "rear", etc. are merely for convenience of describing the present utility model based on the description of the structure of the present utility model shown in the drawings, and are not intended to indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first" and "second" in this technical solution are merely references to the same or similar structures, or corresponding structures that perform similar functions, and are not an arrangement of the importance of these structures, nor are they ordered, or are they of a comparative size, or other meaning.
In addition, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two structures. It will be apparent to those skilled in the art that the specific meaning of the terms described above in this application may be understood in the light of the general inventive concept in connection with the present application.
Claims (10)
1. The utility model provides a coking dust discharging system, includes gas ash mixing tube (7), the top of gas ash mixing tube (7) is connected with ash bin (1), be connected with inert gas on gas ash mixing tube (7) and supply pipe and dust removal ash to inhale and arrange tank car connection structure, inert gas supply pipe is used for letting in inert gas in gas ash mixing tube (7), dust removal ash inhales and arranges tank car connection structure and is used for being connected with dust removal ash and inhale and arrange tank car, its characterized in that: an air supplementing pipe (10) is connected to the air ash mixing pipe (7);
the air supplementing pipe (10) is used for sucking air from the atmosphere when the pressure in the air ash mixing pipe (7) is too low and the inert gas supplementing is insufficient so as to prevent the pressure in the air ash mixing pipe (7) from being too low.
2. The coke ash discharge system of claim 1, wherein: an evacuation pipe (9) is connected to the gas ash mixing pipe (7).
3. The coke ash discharge system as claimed in claim 2, wherein: an emptying pipe electric valve (91) is arranged on the emptying pipe (9).
4. The coke ash discharge system of claim 1, wherein: the bottom of ash bin (1) is connected with hydraulic gate valve (2), the bottom of hydraulic gate valve (2) is connected with connecting pipe (3), the bottom of connecting pipe (3) is connected with electronic ash discharge valve (4), the bottom of electronic ash discharge valve (4) is connected with gas ash mixing tube (7) through blanking pipe (5).
5. The coke ash discharge system of claim 1, wherein: the connecting structure of the dust-removing dust suction and discharge tank truck comprises a compression-resistant telescopic rubber pipe (11), one end of the compression-resistant telescopic rubber pipe (11) is connected with a gas-ash mixing pipe (7), the other end of the compression-resistant telescopic rubber pipe is connected with a dust-removing quick connector (12), and the dust-removing quick connector (12) is used for being connected with the dust-removing dust suction and discharge tank truck.
6. The coke ash discharge system of claim 1, wherein: an air supplementing adjusting valve (102) is arranged on the air supplementing pipe (10).
7. The coke ash discharge system as set forth in claim 6, wherein: the air supplementing pipe (10) is provided with a one-way check valve (101), and the one-way check valve (101) is arranged between the air supplementing and adjusting valve (102) and the air ash mixing pipe (7).
8. The coke ash discharge system of claim 1, wherein: an inert gas control valve is arranged on the inert gas supplementing pipe.
9. The coke ash discharge system of claim 8, wherein: the inert gas supplementing pipe is a nitrogen supplementing pipe (6), and the inert gas control valve is a nitrogen control valve (61).
10. A coker fly ash discharge system as claimed in any one of claims 1 to 9, wherein: the gas ash mixing pipe (7) is provided with a pressure sensor (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320196160.2U CN218909068U (en) | 2023-02-13 | 2023-02-13 | Coking dust removal ash discharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320196160.2U CN218909068U (en) | 2023-02-13 | 2023-02-13 | Coking dust removal ash discharging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218909068U true CN218909068U (en) | 2023-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320196160.2U Active CN218909068U (en) | 2023-02-13 | 2023-02-13 | Coking dust removal ash discharging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218909068U (en) |
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2023
- 2023-02-13 CN CN202320196160.2U patent/CN218909068U/en active Active
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