CN110772992A - System and method for automatically overturning, conveying and blowing ash for catalyst - Google Patents
System and method for automatically overturning, conveying and blowing ash for catalyst Download PDFInfo
- Publication number
- CN110772992A CN110772992A CN201910956983.9A CN201910956983A CN110772992A CN 110772992 A CN110772992 A CN 110772992A CN 201910956983 A CN201910956983 A CN 201910956983A CN 110772992 A CN110772992 A CN 110772992A
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- limit switch
- transport vehicle
- control cabinet
- plc control
- catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/88—Handling or mounting catalysts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J38/00—Regeneration or reactivation of catalysts, in general
- B01J38/04—Gas or vapour treating; Treating by using liquids vaporisable upon contacting spent catalyst
Abstract
The invention discloses a system and a method for automatically overturning, conveying and blowing dust of a catalyst, wherein a PLC control box is adopted to be in communication connection with each component, so that the intellectualization of the whole set of work flow is realized, the work efficiency is greatly improved, and the work safety is improved; and the module simple structure, stability is high, can move in a flexible way, can move the soot blowing nozzle to the settlement position, evenly sweeps simultaneously and has passed. The system has compact structure, no redundant procedure or device, and can greatly improve the working efficiency and the working safety; the module has simple structure and high stability, can move flexibly and conveys the soot blowing nozzle to any place in the cross range; through the automatic control system of each equipment of denitration catalyst soot blowing, accomplish the automatic soot blowing of denitration catalyst module, reduce cost of labor and safety problem.
Description
Technical Field
The invention relates to a system and a method for automatically overturning, conveying and blowing catalyst, belonging to the technical field of catalyst blowing.
Background
Denitration catalyst soot blowing is an important link of a thermal power plant, the soot blowing scheme of the existing power plant is quite simple, the catalyst is directly laterally prevented from being placed, the catalyst is forked to a soot blowing chamber by a forklift, after the prevention is completed, manual soot blowing is performed by a worker through a high-pressure blowing pipe, at the moment, a negative-pressure suction pipe sucks away dust on the left side of a small door, the worker presses a switch, a wood turntable rotates 180 degrees, the steps are repeated, and the worker uses the high-pressure blowing pipe to perform manual soot blowing on the other side. After soot blowing is completed, the catalyst is forked away by a forklift.
All procedures in the prior art are completed manually, so that the efficiency is low, the potential safety hazard is large, and the waste of materials can be caused.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a system and a method for automatically turning, conveying and blowing the catalyst, wherein a PLC control box is adopted to be in communication connection with each component, so that the intellectualization of the whole set of working process is realized, the working efficiency is greatly improved, and the working safety is improved; and the module simple structure, stability is high, can move in a flexible way, can move the soot blowing nozzle to the settlement position, evenly sweeps simultaneously and has passed.
The invention adopts the following technical scheme for solving the technical problems:
the invention provides a system for automatically overturning, conveying and blowing ash for a catalyst, which comprises an overturning machine, a transport vehicle, a linear synchronous belt and a ash blowing chamber, wherein the overturning machine comprises an overturning machine rotating motor, the transport vehicle comprises a hydraulic lifting device, and a linear synchronous belt module comprises a stepping motor.
The system also comprises a PLC control cabinet which is in bidirectional communication connection with the turnover machine, the transport vehicle, the linear synchronous belt module and the soot blowing chamber; the turnover machine frame is arranged at the initial end of a walking track of the transport vehicle, a first limit switch is arranged at the vertical position of a platform of the turnover machine, and a second limit switch is arranged at the horizontal position of the platform; the transport vehicle is arranged on the walking track, and the transport vehicle is positioned below the turnover machine in the initial stage; the dust blowing device is characterized in that a third limit switch of the transport vehicle is arranged at the starting end of the traveling track, the dust blowing chamber is located at the tail end of the traveling track, a fourth limit switch of the transport vehicle is arranged at the tail end of the traveling track, a support table is placed at the middle position in the dust blowing chamber, the front side and the rear side of the support table are respectively provided with a same linear synchronous belt module, and a dust blowing nozzle is respectively arranged on sliding blocks of the two linear synchronous belt modules.
As a further technical scheme of the invention, the linear synchronous belt module comprises a guide rail, a slide block on the guide rail, a belt for drawing the slide block, a stepping motor for driving the belt to rotate, a coupler and a synchronous wheel, wherein the stepping motor and the synchronous wheel are connected by the coupler, and a soot blowing nozzle is arranged on the slide block; and a left limit switch and a right limit switch are respectively arranged at two ends of the linear synchronous belt module.
As a further technical scheme of the invention, the PLC control cabinet is in bidirectional communication connection with the rotating motor of the tilter, the first limit switch, the transport vehicle, the second limit switch, the hydraulic lifting device, the third limit switch, the fourth limit switch, the left limit switch, the right limit switch and the stepping motor.
As a further technical scheme of the invention, the PLC control cabinet is provided with a power key switch, an emergency stop button, a start button, a stop/reset button and a speed gear dial switch.
As a further technical scheme of the invention, the turnover machine is provided with a turnover platform, and a limiting device is arranged on the turnover platform.
In another aspect, the present invention provides a method for using the system for automatically turning over, transporting and blowing soot of catalyst as described in any one of the above, comprising the following steps:
s1, after the catalyst container is placed on a platform of the turnover machine, the turnover machine is started through a PLC control cabinet, and the turnover machine drives the catalyst container to turn over for 90 degrees on a vertical plane for placement; at the moment, the tilter touches a first limit switch, and the first limit switch transmits a signal to the PLC control cabinet; subsequently, go to S2;
s2, after receiving the signal transmitted by the first limit switch, the PLC control cabinet starts a transport vehicle stopped below the turnover machine, the transport vehicle starts a hydraulic lifting device to lift the catalyst container and convey the catalyst container into a soot blowing chamber along a traveling track, and when the transport vehicle contacts a fourth limit switch at the tail end of the traveling track, the PLC control cabinet transmits the signal; at the moment, the PLC control cabinet stops the operation of the transport vehicle, controls the hydraulic lifting device to fall down, places the catalyst container with the catalyst on the support table, and after the actions are finished, the transport vehicle exits from the ash blowing chamber; subsequently, go to S3;
s3, the carrier vehicle exits from the ash blowing chamber to a third limit switch, a trigger signal is transmitted to the PLC control cabinet, then the PLC control cabinet immediately controls the stepping motor to start, two identical linear synchronous belt modules simultaneously start to work according to the movement speed and the movement direction set by the PLC control cabinet, at the moment, the ash blowing nozzles carried by the linear synchronous belt modules start blowing compressed air until the linear synchronous belt modules touch the right limit switch, and at the moment, the right limit switch transmits the signal to the PLC control cabinet; subsequently, go to S4;
s4, the PLC control cabinet controls the transport vehicle to enter the ash blowing chamber and move to the position below the catalyst container, the catalyst container is supported by a hydraulic lifting device of the transport vehicle, the transport vehicle conveys the catalyst container to the turnover machine through the traveling track, the transport vehicle contacts a third limit switch on the traveling track at the moment, the third limit switch transmits a signal to the PLC control cabinet, and the PLC control cabinet controls the transport vehicle to stop; transitioning to S5;
s5, after the transport vehicle stops, the PLC control cabinet transmits a signal to the hydraulic lifting device to fall down, and the catalyst container falls down to the platform of the turnover machine; after 10 seconds, the catalyst container is turned over by the turnover machine, the catalyst container is turned over by 90 degrees on the vertical surface and returns to the initial position, the catalyst container touches a fourth limit switch, the fourth limit switch transmits a signal to the PLC control cabinet, and the PLC control cabinet controls the turnover machine to stop.
As a further technical scheme of the invention, the movement speed of the soot blowing nozzle is 2 m/min.
As a further technical solution of the present invention, the motion logic of the linear synchronous belt module is:
prepare the during operation, the slider of linear hold-in range module is located the leftmost end of linear hold-in range module, and after the PLC switch board started step motor, step motor drove the belt of linear hold-in range module and rotates, and belt one end drags the slider and begins to move right, arrives the right-hand member of linear hold-in range module and contacts behind the right limit switch of linear hold-in range module right-hand member when the slider, right limit switch transmission signal to PLC switch board, PLC switch board change step motor's direction of rotation, and the slider moves left along linear hold-in range module until contacting the left limit switch of linear hold-in range module left end, slider stop motion.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
(1) the system has compact structure, no redundant procedure or device, and can greatly improve the working efficiency and the working safety;
(2) the module has simple structure and high stability, can move flexibly and conveys the soot blowing nozzle to any place in the cross range;
(3) through the automatic control system of each equipment of denitration catalyst soot blowing, accomplish the automatic soot blowing of denitration catalyst module, reduce cost of labor and safety problem.
Drawings
FIG. 1 is a schematic diagram of the communication connection of a PLC control box and various devices, wherein 1 is a PLC control cabinet, 2 is a rotating motor of a tilter, 3 is the tilter, 4 is a hydraulic device, 5 is a transport vehicle, 6 is a stepping motor, 7 is a linear synchronous belt module, and 8 is a soot blowing nozzle;
fig. 2 is a schematic structural diagram of a linear synchronous belt module in the invention, wherein 6 is a stepping motor, 10 is a coupler, 11 is a sliding block, 12 is a guide rail, 13 is a belt, and 14 is a synchronous wheel.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in fig. 1, the automatic catalyst turnover, conveying and soot blowing system of the present invention includes a turnover machine, a transport vehicle, a linear synchronous belt and a soot blowing chamber, wherein the turnover machine includes a turnover machine rotating motor, the transport vehicle includes a hydraulic lifting device, and the linear synchronous belt module includes a stepping motor. The system also comprises a PLC control cabinet which is in bidirectional communication connection with the turnover machine, the transport vehicle, the linear synchronous belt module and the soot blowing chamber; the turnover machine frame is arranged at the initial end of a walking track of the transport vehicle, a first limit switch is arranged at the vertical position of a platform of the turnover machine, and a second limit switch is arranged at the horizontal position of the platform; the transport vehicle is arranged on the walking track, and the transport vehicle is positioned below the turnover machine in the initial stage; the dust blowing device is characterized in that a third limit switch of the transport vehicle is arranged at the starting end of the traveling track, the dust blowing chamber is located at the tail end of the traveling track, a fourth limit switch of the transport vehicle is arranged at the tail end of the traveling track, a support table is placed at the middle position in the dust blowing chamber, the front side and the rear side of the support table are respectively provided with a same linear synchronous belt module, and a dust blowing nozzle is respectively arranged on sliding blocks of the two linear synchronous belt modules.
Further, as shown in fig. 2, the linear synchronous belt module includes a guide rail, a slider on the guide rail, a belt for pulling the slider, a stepping motor for driving the belt to rotate, a coupler and a synchronous wheel, the stepping motor and the synchronous wheel are connected by the coupler, and a soot blowing nozzle is installed on the slider; and a left limit switch and a right limit switch are respectively arranged at two ends of the linear synchronous belt module.
Furthermore, the PLC control cabinet is in bidirectional communication connection with the rotating motor of the tilter, the first limit switch, the transport vehicle, the second limit switch, the hydraulic lifting device, the third limit switch, the fourth limit switch, the left limit switch, the right limit switch and the stepping motor.
Further, the PLC control cabinet is provided with a power key switch, an emergency stop button, a start button, a stop/reset button and a speed gear dial switch.
Further, the turnover machine is provided with a turnover platform, and a limiting device is arranged on the turnover platform.
In order to better utilize the catalyst automatic overturning, conveying and soot blowing system provided by the invention, the invention also provides a using method of the catalyst automatic overturning, conveying and soot blowing system, which comprises the following steps:
s1, after the catalyst container is placed on a platform of the turnover machine, the turnover machine is started through a PLC control cabinet, and the turnover machine drives the catalyst container to turn over for 90 degrees on a vertical plane for placement; at the moment, the tilter touches a first limit switch, and the first limit switch transmits a signal to the PLC control cabinet; subsequently, go to S2;
s2, after receiving the signal transmitted by the first limit switch, the PLC control cabinet starts a transport vehicle stopped below the turnover machine, the transport vehicle starts a hydraulic lifting device to lift the catalyst container and convey the catalyst container into a soot blowing chamber along a traveling track, and when the transport vehicle contacts a fourth limit switch at the tail end of the traveling track, the PLC control cabinet transmits the signal; at the moment, the PLC control cabinet stops the operation of the transport vehicle, controls the hydraulic lifting device to fall down, places the catalyst container with the catalyst on the support table, and after the actions are finished, the transport vehicle exits from the ash blowing chamber; subsequently, go to S3;
s3, the carrier vehicle exits from the ash blowing chamber to a third limit switch, a trigger signal is transmitted to the PLC control cabinet, then the PLC control cabinet immediately controls the stepping motor to start, two identical linear synchronous belt modules simultaneously start to work according to the movement speed and the movement direction set by the PLC control cabinet, at the moment, the ash blowing nozzles carried by the linear synchronous belt modules start blowing compressed air until the linear synchronous belt modules touch the right limit switch, and at the moment, the right limit switch transmits the signal to the PLC control cabinet; subsequently, go to S4;
s4, the PLC control cabinet controls the transport vehicle to enter the ash blowing chamber and move to the position below the catalyst container, the catalyst container is supported by a hydraulic lifting device of the transport vehicle, the transport vehicle conveys the catalyst container to the turnover machine through the traveling track, the transport vehicle contacts a third limit switch on the traveling track at the moment, the third limit switch transmits a signal to the PLC control cabinet, and the PLC control cabinet controls the transport vehicle to stop; transitioning to S5;
s5, after the transport vehicle stops, the PLC control cabinet transmits a signal to the hydraulic lifting device to fall down, and the catalyst container falls down to the platform of the turnover machine; after 10 seconds, the catalyst container is turned over by the turnover machine, the catalyst container is turned over by 90 degrees on the vertical surface and returns to the initial position, the catalyst container touches a fourth limit switch, the fourth limit switch transmits a signal to the PLC control cabinet, and the PLC control cabinet controls the turnover machine to stop.
Further, the movement speed of the soot blowing nozzle is 2 m/min. Through repeated tests, the soot blowing effect is best at the speed, the efficiency is highest, and the stability is also strongest.
Further, the motion logic of the linear synchronous belt module is as follows: prepare the during operation, the slider of linear hold-in range module is located the leftmost end of linear hold-in range module, and after the PLC switch board started step motor, step motor drove the belt of linear hold-in range module and rotates, and belt one end drags the slider and begins to move right, arrives the right-hand member of linear hold-in range module and contacts behind the right limit switch of linear hold-in range module right-hand member when the slider, right limit switch transmission signal to PLC switch board, PLC switch board change step motor's direction of rotation, and the slider moves left along linear hold-in range module until contacting the left limit switch of linear hold-in range module left end, slider stop motion.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention are included in the scope of the present invention, and therefore, the scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. A system for automatically overturning, conveying and blowing dust for a catalyst comprises an overturning machine (3), a transport vehicle (5), a linear synchronous belt and a dust blowing chamber, wherein the overturning machine (3) comprises an overturning machine rotating motor (2), the transport vehicle (5) comprises a hydraulic lifting device (4), and a linear synchronous belt module (7) comprises a stepping motor (6), and is characterized by further comprising a PLC control cabinet (1) which is in two-way communication connection with the overturning machine (3), the transport vehicle (5), the linear synchronous belt module (7) and the dust blowing chamber;
the turnover machine (3) is erected at the initial end of a traveling track of the transport vehicle (5), a first limit switch is arranged at the vertical position of a platform of the turnover machine (3), and a second limit switch is arranged at the horizontal position of the platform; the transport vehicle (5) is erected on the walking track, and the transport vehicle (5) is positioned below the turnover machine (3) in the initial stage; the dust blowing device is characterized in that a third limit switch of the transport vehicle (5) is arranged at the starting end of the traveling track, the dust blowing chamber is located at the tail end of the traveling track, a fourth limit switch of the transport vehicle is arranged at the tail end of the traveling track, a support table (9) is placed at the middle position in the dust blowing chamber, the same linear synchronous belt modules (7) are arranged on the front side and the rear side of the support table (9), and a dust blowing nozzle (8) is arranged on a sliding block (11) of each of the two linear synchronous belt modules (7).
2. The system for automatically overturning, conveying and blowing the catalyst as claimed in claim 1, wherein the linear synchronous belt module (7) comprises a guide rail (12), a slide block (11) on the guide rail, a belt (13) for pulling the slide block (11), a stepping motor (6) for driving the belt (13) to rotate, a coupler (10) and a synchronous wheel (14), the stepping motor (6) and the synchronous wheel (14) are connected by the coupler (10), and a soot blowing nozzle (8) is installed on the slide block (11);
and a left limit switch and a right limit switch are respectively arranged at two ends of the linear synchronous belt module (7).
3. The system for automatically overturning, conveying and blowing the catalyst as claimed in claim 1, wherein the PLC control cabinet (1) is in bidirectional communication connection with the overturning machine rotating motor (2), the first limit switch, the transport vehicle (5), the second limit switch, the hydraulic lifting device (4), the third limit switch, the fourth limit switch, the left limit switch, the right limit switch and the stepping motor (6).
4. The system for automatic catalyst turnover, transport and soot blowing as claimed in claim 1, wherein the PLC control cabinet (1) has a power key switch, an emergency stop button, a start button, a stop/reset button and a speed gear dial switch.
5. The system for automatically overturning, conveying and blowing the catalyst as claimed in claim 1, wherein the overturning machine (3) is provided with an overturning platform, and a limiting device is arranged on the overturning platform.
6. The use of an automatic catalyst turnover, transport and soot blowing system as claimed in any one of claims 1 to 5, comprising the steps of:
s1, after the catalyst container is placed on a platform of the turnover machine (3), the turnover machine (3) is started through the PLC control cabinet (1), and the turnover machine (3) drives the catalyst container to be placed in a way that the catalyst container is turned over for 90 degrees on a vertical plane; at the moment, the tilter (3) touches a first limit switch, and the first limit switch transmits a signal to the PLC control cabinet (1); subsequently, go to S2;
s2, after receiving a signal transmitted by a first limit switch, the PLC control cabinet (1) starts a transport vehicle (5) stopped below the turnover machine (3), the transport vehicle starts a hydraulic lifting device (4), supports a catalyst container and conveys the catalyst container to a soot blowing chamber along a traveling track, and when the transport vehicle (5) contacts a fourth limit switch at the tail end of the traveling track, the PLC control cabinet (1) transmits the signal; at the moment, the PLC control cabinet (1) stops the operation of the transport vehicle (5), controls the hydraulic lifting device (4) to fall down, places the catalyst container with the catalyst on the support table (9), and after the actions are finished, the transport vehicle (5) exits from the ash blowing chamber; subsequently, go to S3;
s3, the carrier vehicle (5) exits from the ash blowing chamber to a third limit switch, a trigger signal is transmitted to the PLC control cabinet (1), then the PLC control cabinet (1) immediately controls the stepping motor (6) to start, two identical linear synchronous belt modules (7) simultaneously start to work according to the movement speed and the movement direction set by the PLC control cabinet (1), at the moment, the ash blowing nozzles (8) carried by the linear synchronous belt modules (7) start to blow out compressed air until the linear synchronous belt modules (7) touch the right limit switch, and at the moment, the right limit switch transmits the signal to the PLC control cabinet (1); subsequently, go to S4;
s4, the PLC control cabinet (1) controls the transport vehicle (5) to enter the ash blowing chamber and move to the lower side of the catalyst container, the catalyst container is supported by a hydraulic lifting device (4) of the transport vehicle (5), the transport vehicle (5) conveys the catalyst container to the turnover machine (3) through the traveling track, at the moment, the transport vehicle (5) contacts a third limit switch on the traveling track, the third limit switch transmits a signal to the PLC control cabinet (1), and the PLC control cabinet (1) controls the transport vehicle (5) to stop; transitioning to S5;
s5, after the transport vehicle (5) stops, the PLC control cabinet (1) transmits a signal to the hydraulic lifting device (4) to fall down, and the catalyst container falls down to the platform of the turnover machine (3) along with the signal; after 10 seconds, the catalyst container is turned over by the turnover machine (3), turned over by 90 degrees on the vertical plane and returned to the initial position, and then the catalyst container touches a fourth limit switch, the fourth limit switch transmits a signal to the PLC control cabinet (1), and the PLC control cabinet (1) controls the turnover machine (3) to stop.
7. The use method of the system for automatically overturning, conveying and blowing the catalyst as claimed in claim 6, wherein the movement speed of the soot blowing nozzle (8) is 2 m/min.
8. The use method of the system for automatically overturning, conveying and blowing the catalyst as claimed in claim 6, wherein the motion logic of the linear synchronous belt module (7) is as follows:
prepare the during operation, slider (11) of linear hold-in range module (7) are located the leftmost end of linear hold-in range module (7), PLC switch board (1) start step motor (6) back, step motor (6) drive belt (13) of linear hold-in range module (7) and rotate, belt (13) one end drags slider (11) and begins the motion to the right, arrives the right-hand member of linear hold-in range module (7) and contacts behind the right limit switch of linear hold-in range module (7) right-hand member when slider (11), right limit switch transmission signal to PLC switch board (1), PLC switch board (1) change the direction of rotation of step motor (6), slider (11) move left along linear hold-in range module (7) until contacting the left limit switch of linear hold-in range module (7) left end, slider (11) stop motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956983.9A CN110772992A (en) | 2019-10-10 | 2019-10-10 | System and method for automatically overturning, conveying and blowing ash for catalyst |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956983.9A CN110772992A (en) | 2019-10-10 | 2019-10-10 | System and method for automatically overturning, conveying and blowing ash for catalyst |
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| CN110772992A true CN110772992A (en) | 2020-02-11 |
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| CN201910956983.9A Pending CN110772992A (en) | 2019-10-10 | 2019-10-10 | System and method for automatically overturning, conveying and blowing ash for catalyst |
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Application publication date: 20200211 |