CN105296013A - Automatic deslagging device for pulverized coal pressurization gasification and deslagging method - Google Patents
Automatic deslagging device for pulverized coal pressurization gasification and deslagging method Download PDFInfo
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- CN105296013A CN105296013A CN201510820497.6A CN201510820497A CN105296013A CN 105296013 A CN105296013 A CN 105296013A CN 201510820497 A CN201510820497 A CN 201510820497A CN 105296013 A CN105296013 A CN 105296013A
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Abstract
The invention discloses an automatic deslagging device for pulverized coal pressurization gasification. The deslagging device comprises a shock chamber, a lock hopper, a circulating pump, a pressure pump, a slag pool and a control system. The control system, according to according to the preset sequential parameters, transmits the generated sequential motion instruction to each valve to finish the deslagging-slag collecting process of the lock hopper, and cycles on preset timing. The device has a significant feature of using a sequential controller to achieve strict sequential control, so that the solenoid valve drives a pneumatic valve switch, the time control error is small, and the actuator has sensitive action. An on-site bus technology is employed to greatly reduce the number of communication lines; sequential connection of performing structures is realized through daisy chain connections; and node controller communication address is automatically allocated. The device has the advantages of standardized interfaces, strong interchangeability, convenient maintenance, safety, and reliability, and ensures safe and smooth deslagging of pulverized coal pressurization gasification.
Description
Technical field
The present invention relates to a kind of slag discharging device and Slagoff method, specifically, be a kind of powdered coal pressuring gasified automatic slag discharge device and Slagoff method, belong to bed pulverized coal gasification technology field.
Background technology
The preparation of China's nitrogen fertilizer industry unstripped gas for a long time adopts atmospheric fixed-bed gasification technology always, and efficiency of carbon conversion is low, seriously polluted, and anthracite block coal used is mainly from Jincheng, Shanxi, and price is high, and freight charges are expensive, and fertilizer cost is too high.
In recent years from having introduced tens of cover " Texaco's pressurized water coal slurry gasification technology ", " shell pressurize powdered coal pressuring gasified technology " abroad, improve coal utilizaton rate, decrease environmental pollution, to promoting that active effect is played in the development of bed pulverized coal gasification technology, but because imported technology patent fee is high, the necessary import of key equipment, causes investment excessive, major part nitrogenous fertilizer enterprises is difficult to bear, and technology popularization is restricted.
The synthetic gas of the powdered coal pressuring gasified technique of shell adopts pot destroying process, Texaco Water-coal Slurry Pressured Gasification Process and HT-L pressurize the water chilling technology that fine coal gasification process synthetic gas adopts, and granularity is less than the coal dust of 100 μm and vaporized chemical (pure oxygen adds overheated steam) generates CO, H in vaporizer reaction
2for synthetic gas and the slag of main component, water shock chamber is entered from downtake, by water-bath, hot synthesis gas and slag are lowered the temperature, synthetic gas is washed simultaneously, the part flying dust carried secretly in removing synthetic gas and carbon black, and synthetic gas is separated with slag, the synthetic gas through cooling washing enters lower operation by the cascade of shock chamber's annular space from syngas outlet, slag and Heisui River then enter the dreg-locking hopper of coupled knot from bottom slag discharge, by DCS robot control system(RCS) timing cycle deslagging.
Because this Controlling System still have employed CPU industrial control unit (ICU), controller and topworks adopt many signal line to be connected, find that setting-up time error is larger through long-time running, topworks's action is delayed, and after breaking down, be difficult to search because signal wire is various, normally carry out smoothly so that affect deslagging.Therefore study a kind of time error little, be active in one's movements, overhaul conveniently, safe and reliable automatic slag discharge device and method be very necessary.
Summary of the invention
For the defect of prior art, the invention provides a kind of time control error little, be active in one's movements, overhaul conveniently, safe and reliable powdered coal pressuring gasified automatic slag discharge device and Slagoff method.
In order to solve the technical problem,
the present inventionthe technical scheme adopted is: powdered coal pressuring gasified automatic slag discharge device, comprise shock chamber, lock hopper, flushing water pot, recycle pump, force (forcing) pump, slag bath and Controlling System, lower end, shock chamber slag-drip opening is connected with lock hopper by lock hopper collection slag valve, lock hopper lower end connects lock hopper discharge valve, and discharge valve is connected with slag bath by pipeline, rinse water pot outlet and lock hopper rinse water valve is installed, be connected with lock hopper by pipeline, pump inlet installs pump entry valve, be connected with lock hopper by pipeline, outlet is connected with shock chamber with pipeline, recycle pump by-pass valve installed by outlet bypass tube, be connected on the pipeline between pump entry valve and recycle pump with pipeline, force (forcing) pump import is connected with buck settling pond primary water, lock hopper pressurizing valve installed by outlet pipe, be connected with lock hopper with pipeline, lock hopper pressure release valve and relief tube flush valve are installed in lock hopper top, slag bath upper port installs surplus valve, described Controlling System comprises time schedule controller, send the sensor of automatic slag discharge device working state signal to time schedule controller and receive multiple Node Controllers of the sequential action command that time schedule controller sends, described slag bath surplus valve, lock hopper collection slag valve, lock hopper discharge valve, lock hopper rinse water valve, lock hopper pressure release valve, relief tube flush valve, lock hopper pressurizing valve, lock hopper pump entry valve, recycle pump by-pass valve all connects a Node Controller, each Node Controller is linked in sequence successively, form daisy chain bus structure, time schedule controller is connected with the Node Controller be positioned at foremost, and described time schedule controller is according to the every each valve execution of the signal instruction of the time sequence parameter preset, sensor feedback.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, described time schedule controller comprises FPGA timing unit, digital quantity input module, control module, fieldbus communications module, described FPGA timing unit is connected with control module and digital quantity input module respectively, for producing sequential action command according to the sequential control parameter of control module storage and the working state signal of digital quantity input module feedback; Described fieldbus communications module is connected with control module, for sending instruction and accepting state to Node Controller; Digital quantity input module is connected with sensor, for the automatic slag discharge device working state signal that receiving sensor gathers.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, described Node Controller comprises upper port, lower port, output control terminal mouth, time schedule controller connects the upper port of first node controller, the lower port of first node controller connects the upper port of Section Point controller, the lower port of Section Point controller connects the upper port of the 3rd Node Controller, residue Node Controller is linked in sequence successively, forms daisy chain bus structure; Output control terminal mouth connects each valve, for sequential action command is transferred to each valve.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, described sensor comprises pressure transmitter and water level sensor.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, time schedule controller also comprises wireless module, for master control computer two-way communication.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, time schedule controller also comprises human-machine interface module, and human-machine interface module is connected with control module, for scene setting time sequence parameter.
Powdered coal pressuring gasified automatic slag discharge device of the present invention, Node Controller also comprises communication module, for master control computer two-way communication.
The invention also discloses a kind of powdered coal pressuring gasified automatic sludge discharge method, described slag bath surplus valve, lock hopper collection slag valve, lock hopper discharge valve, lock hopper rinse water valve, lock hopper pressure release valve, relief tube flush valve, lock hopper pressurizing valve, lock hopper pump entry valve, recycle pump by-pass valve all connects a Node Controller, time schedule controller is connected with Node Controller, daisy chain bus structure is connected into by communication bus between described Node Controller, time schedule controller is according to the time sequence parameter preset, the signal of sensor feedback is to Node Controller transmission timing action command, the sequential action command received is sent to the valve of connection by Node Controller, valve is according to the sequential action command action received, complete deslagging-collect slag process again.
The deslagging of powdered coal pressuring gasified automatic sludge discharge method of the present invention-collect slag process again to comprise the following steps:
1) after, lock hopper and vapourizing furnace separate, time schedule controller is to the Node Controller transmission timing action command be connected with pump entry valve, recycle pump by-pass valve, pressure release valve, sequential action command is sent to corresponding valve by Node Controller, pump entry valve cuts out, recycle pump by-pass valve is opened, pressure release valve is opened, and carries out lock hopper pressure release;
2), when pressure transmitter records lock hopper pressure lower than 0.18MPa, time schedule controller is to the Node Controller transmission timing action command be connected with slag bath surplus valve, relief tube flush valve, slag bath surplus valve cuts out, and relief tube flush valve is opened, and starts the solid particulate cleaned in relief tube;
3), reach setting relief tube scavenging period after, time schedule controller, to the Node Controller transmission timing action command is connected with relief tube flush valve, to cut out relief tube flush valve, stops cleaning;
4) time schedule controller is to the Node Controller transmission timing action command be connected with lock hopper rinse water valve, lock hopper rinse water valve is opened, starts to rinse lock hopper;
5), after having rinsed, time schedule controller is to the Node Controller transmission timing action command be connected with lock hopper discharge valve, lock hopper pressurizing valve, and lock hopper discharge valve is opened, and lock hopper starts deslagging; Open lock hopper pressurizing valve simultaneously, help deslagging;
6), after reaching the lock hopper slag dumping time, time schedule controller, again to the Node Controller transmission timing action command be connected with lock hopper discharge valve, lock hopper pressurizing valve, cuts out lock hopper discharge valve, closes lock hopper pressurizing valve simultaneously, and lock hopper slag dumping stops;
7) after lock hopper discharge valve cuts out, after water level sensor detects and refills water in lock hopper, time schedule controller is to the Node Controller transmission instruction connecting lock hopper rinse water valve, lock hopper pressure release valve, close lock hopper rinse water valve and lock hopper pressure release valve, the setting lock hopper discharge valve turn-off time, after reaching setting-up time, time schedule controller controls to open slag bath surplus valve, lock hopper stops the process of slag dumping, collection slag, pressure release, pressurization, and slag bath buck starts overflow, recycle pump repeats itself;
8), after confirming that lock hopper discharge valve, lock hopper rinse water valve, lock hopper pressure release valve are closed, time schedule controller, to the Node Controller transmission timing action command connecting lock hopper pressurizing valve, is opened lock hopper pressurizing valve, is pressurizeed to lock hopper;
9) when pressure transmitter records lock hopper and vapourizing furnace syngas outlet pressure pressure reduction is less than 0.18MPa, time schedule controller controls to open lock hopper collection slag valve, starts to collect slag; And after lock hopper collection slag valve is opened, time schedule controller controls to cut out lock hopper pressurizing valve, and during lock hopper collection slag, recycle pump is at repeats itself;
10) after lock hopper pressurizing valve is closed, time schedule controller controls ON cycle pump intake valve, closes lock hopper recycle pump by-pass valve, and in lock hopper, in buck and shock chamber, buck circulates;
11) when reaching the collection slag time of setting, time schedule controller controls to cut out lock hopper collection slag valve, opens lock hopper recycle pump by-pass valve, closes pump entry valve simultaneously, completes a deslagging-collect slag process again.
Powdered coal pressuring gasified automatic sludge discharge method of the present invention, the lock hopper deslagging time is 2min, integrates the slag time as 28min.
Beneficial effect of the present invention: present invention employs time schedule controller and realize strict sequential order control, especially time schedule controller is by the sequential control of FPGA time series stereodata circuit realiration, adopt the active quartz crystal oscillator that the suppression temperature of highly reliable high stable is floated, deviation is less than 10ppm, namely per secondly 10us is no more than, be no more than the deviation of 20ms per half an hour, accuracy of timekeeping controls to exceed an order of magnitude than traditional CPU, immunity from interference controls higher than traditional CPU far away, thus make solenoid-driven pneumavalve switch, time controling error is little, and topworks is active in one's movements.Have employed field bus technique, greatly reduce communication link quantity, according to daisy chain mode of connection, realize execution architecture to connect according to the order of sequence, Node Controller mailing address distributes automatically, has standard interface, interchangeability is strong, maintenance is convenient, safe and reliable, ensure that pressurization coal gasification safety deslagging smoothly.
Accompanying drawing explanation
Fig. 1 is the structural representation of slag discharging device of the present invention;
Fig. 2 is the schematic diagram of Controlling System;
Fig. 3 is the functional block diagram of time schedule controller;
Fig. 4 is the functional block diagram of Node Controller;
In figure: 1, shock chamber, 2, lock hopper, 3, rinse water pot, 4, recycle pump, 5, force (forcing) pump, 6, slag bath, 7, slag bath surplus valve, 8, lock hopper collection slag valve, 9, lock hopper discharge valve, 10, lock hopper rinse water valve, 11, lock hopper pressure release valve, 12, relief tube flush valve, 13, lock hopper pressurizing valve, 14, pump entry valve, 15, recycle pump by-pass valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further and limit.
As shown in Figure 1, a kind of powdered coal pressuring gasified automatic slag discharge device, comprises shock chamber 1, lock hopper 2, rinses water pot 3, recycle pump 4, force (forcing) pump 5, slag bath 6, Controlling System and slag bath surplus valve 7, lock hopper collection slag valve 8, lock hopper discharge valve 9, lock hopper rinse water valve 10, lock hopper pressure release valve 11, relief tube flush valve 12, lock hopper pressurizing valve 13, pump entry valve 14, recycle pump by-pass valve 15.Shock chamber 1 lower end slag-drip opening is connected with lock hopper 2 by lock hopper collection slag valve 8, and lock hopper 2 lower end connects lock hopper discharge valve 9, and lock hopper discharge valve 9 is connected with slag bath 6 by pipeline, rinse water pot 3 and export installation lock hopper rinse water valve 10, be connected with lock hopper 2 by pipeline, pump entry valve 14 is installed in recycle pump 4 import, be connected with lock hopper 2 by pipeline, outlet pipeline is connected with shock chamber 1, recycle pump by-pass valve 15 installed by outlet bypass tube, be connected on the pipeline between pump entry valve 14 and recycle pump 4 with pipeline, force (forcing) pump 5 import is connected with buck settling pond primary water, lock hopper pressurizing valve 13 installed by outlet pipe, be connected with lock hopper 2 with pipeline, lock hopper pressure release valve 11 and relief tube flush valve 12 are installed in lock hopper 2 top, slag bath 6 upper port installs slag bath surplus valve 7.
Shock chamber 1 is the integral part of vapourizing furnace, microfine coal and vaporized chemical (pure oxygen and overheated steam) generate in the reaction of top vaporizer based on the synthetic gas of CO, H2 and slag, shock chamber 1 is entered along downtake, by water-bath, high-temperature synthesis gas and slag are lowered the temperature, also synthetic gas is washed simultaneously, the part flying dust carried secretly in removing synthetic gas and carbon black, and synthetic gas is separated with slag.Gone upward to syngas outlet by the synthetic gas that washing is separated along the annular space of shock chamber 1 and enter lower step operation, separated slag and Heisui River enter the lock hopper 2 be connected with lower end, shock chamber 1.
The effect of lock hopper 2 is collection slag and deslagging, and upper end is connected with shock chamber 1 by lock hopper collection slag valve 8, and lower end is connected with slag bath 6 with pipeline by lock hopper discharge valve 9.By the time sequence parameter of Controlling System by setting, control timing cycle collection slag, deslagging.
The effect of rinsing water pot 3 rinses the lime-ash in lock hopper when lock hopper discharging to lock hopper water filling by setup program, and wash-down water is supplied by the outside network of rivers, and keeps higher water level.
Recycle pump 4 is arranged between shock chamber 1 and lock hopper 2, and its effect is during lock hopper 2 collects slag, and buck circulates between shock chamber 1 and lock hopper 2, carries lime-ash and enters lock hopper 2.During lock hopper 2 discharging, recycle pump 4 entrance is closed and is separated with lock hopper 2, repeats itself.
Force (forcing) pump 5 is pressurizeed to lock hopper 2 for primary water by outer, in lock hopper 2 discharge process, in lock hopper 2, injects high pressure primary water, helps discharging, accelerates discharging and the speed of flushing; Lock hopper 2 discharging terminates, and closes lock hopper discharge valve 9, again opens force (forcing) pump 5 and makes lock hopper pressure press equal with syngas outlet, keep shock chamber 1 and lock hopper 2 pressure equilibrium.
The effect of slag bath 6 is the lime-ash and the Heisui River that receive lock hopper 2 discharge, and inside is provided with slag rake, and entered by slag outside pond, Heisui River enters Heisui River settling tank.
As shown in Figure 2, described Controlling System comprises time schedule controller, sends the sensor of automatic slag discharge device working state signal and receive multiple Node Controllers of the sequential action command that time schedule controller sends to time schedule controller, described slag bath surplus valve 7, lock hopper collection slag valve 8, lock hopper discharge valve 9, lock hopper rinse water valve 10, lock hopper pressure release valve 11, relief tube flush valve 12, lock hopper pressurizing valve 13, pump entry valve 14, recycle pump by-pass valve 15 all connect a Node Controller, each Node Controller is linked in sequence successively, forms daisy chain bus structure; Time schedule controller is connected with the Node Controller be positioned at foremost, and described time schedule controller is according to the every each valve execution of the signal control of the time sequence parameter preset, sensor feedback.
As shown in Figure 3, in the present embodiment, described time schedule controller comprises FPGA timing unit, digital quantity input module, control module, fieldbus communications module, wireless module and human-machine interface module.Described FPGA timing unit is connected with control module and digital quantity input module respectively, for producing sequential action command according to the sequential control parameter of control module storage and the working state signal of digital quantity input module feedback; Described fieldbus communications module is connected with control module, for sending instruction and accepting state to Node Controller; Digital quantity input module is connected with sensor, for the automatic slag discharge device working state signal that receiving sensor gathers; Wireless module is connected with control module, for master control computer two-way communication; Human-machine interface module is connected with control module, for scene setting time sequence parameter.
As shown in Figure 4, powdered coal pressuring gasified automatic slag discharge device of the present invention, described Node Controller comprises upper port, lower port, output control terminal mouth and communication module, time schedule controller connects the upper port of first node controller, the lower port of first node controller connects the upper port of Section Point controller, the lower port of Section Point controller connects the upper port of the 3rd Node Controller, and residue Node Controller is linked in sequence successively, forms daisy chain bus structure; Output control terminal mouth connects each valve, for sequential action command is transferred to each valve; Communication module is used for and master control computer two-way communication.Each Node Controller is communicated by RS485 control bus, and follows unified network communication protocol, is connected with time-sequence control module, realizes system data communication.
In the present embodiment, described sensor comprises pressure transmitter and water level sensor, for detecting pressure and the water level of lock hopper, and the signal of detection is sent to time schedule controller, time schedule controller is according to each valve execution of signal control of the parameter preset and sensor feedback.
The present embodiment also describes a kind of powdered coal pressuring gasified automatic sludge discharge method, be specially: described slag bath surplus valve 7, lock hopper collection slag valve 8, lock hopper discharge valve 9, lock hopper rinse water valve 10, lock hopper pressure release valve 11, relief tube flush valve 12, lock hopper pressurizing valve 13, pump entry valve 14, recycle pump by-pass valve 15 all connects a Node Controller by magnetic valve, time schedule controller is connected with Node Controller, daisy chain bus structure is connected into by communication bus between described Node Controller, time schedule controller is according to the time sequence parameter preset, the signal of sensor feedback is to Node Controller transmission timing action command, the sequential action command received is sent to the valve of connection by Node Controller, valve is according to the sequential action command action received, complete deslagging-collect slag process again.Namely time schedule controller is by the signal of the program preset and sensor feedback, sends instruction by Node Controller to corresponding valve, starts solenoid-driven pneumavalve, completes following deslagging-collect slag process again:
1st step: press start button, time schedule controller controls lock hopper pressure release valve 11 and opens, and pump entry valve 14 cuts out, and lock hopper recycle pump by-pass valve 15 is opened;
Lock hopper 2 carries out pressure release, recycle pump 4 repeats itself always since then;
2nd step: when pressure transmitter records lock hopper pressure release lower than 0.18MPa, time schedule controller controls to cut out slag bath surplus valve 7, opens relief tube flush valve 12;
Carry out rinsing the solid particulate in lock hopper relief tube, stop buck overflow in slag bath 6;
3rd step: relief tube rinses maintenance 30 seconds, closes relief tube flush valve 12;
Relief tube rinses complete;
4th step: when water level sensor records lock hopper flushing water pot maintenance high-water, time schedule controller controls to open lock hopper rinse water valve 10;
Rinse water pot and keep high-water, in lock hopper, the lime-ash in lock hopper is rinsed in water filling;
5th step: after flushing water pot 3 carries out water filling to lock hopper 2, time schedule controller controls to open lock hopper discharge valve 9, opens lock hopper pressurizing valve 13 simultaneously;
Rinse water pot 3 to water filling in lock hopper 2, rinse the lime-ash in lock hopper 2, force (forcing) pump 4 also injects high pressure primary water help flushing cinder in lock hopper 2 simultaneously, accelerates flushing speed;
6th step: lock hopper setting slag dumping time 2min, after reaching setting-up time, time schedule controller controls to cut out lock hopper discharge valve 9, closes lock hopper pressure release valve 11, lock hopper pressurizing valve 13 simultaneously;
Lock hopper 2 discharging stops, and rinses water pot 3 and continues water filling in lock hopper;
7th step: after lock hopper discharge valve 9 cuts out, after water level sensor detects and refills water in lock hopper 2, Controlling System controls to close lock hopper rinse water valve 10 and lock hopper pressure release valve 11, after closedown lock hopper discharge valve 95min, opens slag bath surplus valve 7;
Lock hopper 2 stops the process of slag dumping, collection slag, pressure release, pressurization, and slag bath 6 buck starts overflow, recycle pump 4 repeats itself;
8th step: after confirming that lock hopper discharge valve 9, lock hopper rinse water valve 10, lock hopper pressure release valve 11 are closed, controller controls to open lock hopper pressurizing valve 13;
Force (forcing) pump 5 is noted high pressure primary water and is pressurizeed to lock hopper 2 in lock hopper 2;
9th step: when pressure transmitter record lock hopper 2 equal with vapourizing furnace syngas outlet pressure time, Controlling System controls to open lock hopper collection slag valve 8;
Lock hopper 2 carries out collection slag;
10th step: after lock hopper collection slag valve 8 is opened, closes lock hopper pressurizing valve 13, starts lock hopper timing clock (set(ting)value 28min) simultaneously;
Lock hopper 2 collects slag when carrying out, and recycle pump 4 is still at repeats itself;
11st step: after lock hopper pressurizing valve 13 is closed, opens lock hopper pump entry valve 14, closes recycle pump by-pass valve 15;
Lock hopper 2 proceeds to collect slag, and in lock hopper 2, buck and shock chamber's buck circulate;
12nd step: after reaching the setting lock hopper collection slag time, close lock hopper collection slag valve 8, ON cycle pump by-pass valve 15, cuts out pump entry valve 14, recovers the 1st step, starts new round circulation.
At above-mentioned deslagging-collect in slag process again, can by human-machine interface module scene setting time sequence parameter.Controlling System and master control computer two-way communication, for setting sequential control parameter and feedback topworks working order.
Described above is only ultimate principle of the present invention and preferred embodiment, and the improvement that those skilled in the art make the present invention and replacement, also belong to protection scope of the present invention.
Claims (10)
1. powdered coal pressuring gasified automatic slag discharge device, comprise shock chamber (1), lock hopper (2), rinse water pot (3), recycle pump (4), force (forcing) pump (5), slag bath (6) and Controlling System, shock chamber (1) lower end slag-drip opening is connected with lock hopper (2) by lock hopper collection slag valve (8), lock hopper (2) lower end connects lock hopper discharge valve (9), and lock hopper discharge valve (9) is connected with slag bath (6) by pipeline, rinse water pot (3) outlet and lock hopper rinse water valve (10) is installed, be connected with lock hopper (2) by pipeline, pump entry valve (14) is installed in recycle pump (4) import, be connected with lock hopper (2) by pipeline, outlet is connected with shock chamber (1) with pipeline, recycle pump by-pass valve (15) installed by outlet bypass tube, be connected on the pipeline between pump entry valve and recycle pump with pipeline, force (forcing) pump (5) import is connected with buck settling pond primary water, lock hopper pressurizing valve (13) installed by outlet pipe, be connected with lock hopper (2) with pipeline, lock hopper pressure release valve (11) and relief tube flush valve (12) are installed in lock hopper (2) top, slag bath (6) upper port installs surplus valve (7), it is characterized in that: described Controlling System comprises time schedule controller, send the sensor of automatic slag discharge device working state signal to time schedule controller and receive multiple Node Controllers of the sequential action command that time schedule controller sends, described slag bath surplus valve (7), lock hopper collection slag valve (8), lock hopper discharge valve (9), lock hopper rinse water valve (10), lock hopper pressure release valve (11), relief tube flush valve (12), lock hopper pressurizing valve (13), lock hopper pump entry valve (14), recycle pump by-pass valve (15) all connects a Node Controller, each Node Controller is linked in sequence successively, form daisy chain bus structure, time schedule controller is connected with the Node Controller be positioned at foremost, and described time schedule controller is according to the every each valve execution of the signal instruction of the time sequence parameter preset, sensor feedback.
2. powdered coal pressuring gasified automatic slag discharge device according to claim 1, it is characterized in that: described time schedule controller comprises FPGA timing unit, digital quantity input module, control module, fieldbus communications module, described FPGA timing unit is connected with control module and digital quantity input module respectively, for producing sequential action command according to the sequential control parameter of control module storage and the working state signal of digital quantity input module feedback; Described fieldbus communications module is connected with control module, for sending instruction and accepting state to Node Controller; Digital quantity input module is connected with sensor, for the automatic slag discharge device working state signal that receiving sensor gathers.
3. powdered coal pressuring gasified automatic slag discharge device according to claim 1, it is characterized in that: described Node Controller comprises upper port, lower port, output control terminal mouth, time schedule controller connects the upper port of first node controller, the lower port of first node controller connects the upper port of Section Point controller, the lower port of Section Point controller connects the upper port of the 3rd Node Controller, residue Node Controller is linked in sequence successively, forms daisy chain bus structure; Output control terminal mouth connects each valve, for sequential action command is transferred to each valve.
4. powdered coal pressuring gasified automatic slag discharge device according to claim 1, is characterized in that: described sensor comprises pressure transmitter and water level sensor.
5. powdered coal pressuring gasified automatic slag discharge device according to claim 2, is characterized in that: time schedule controller also comprises wireless module, for master control computer two-way communication.
6. powdered coal pressuring gasified automatic slag discharge device according to claim 2, it is characterized in that: time schedule controller also comprises human-machine interface module, human-machine interface module is connected with control module, for scene setting time sequence parameter.
7. powdered coal pressuring gasified automatic slag discharge device according to claim 3, is characterized in that: Node Controller also comprises communication module, for master control computer two-way communication.
8. the automatic sludge discharge method based on automatic slag discharge device powdered coal pressuring gasified described in claim 1, it is characterized in that: described slag bath surplus valve, lock hopper collection slag valve, lock hopper discharge valve, lock hopper rinse water valve, lock hopper pressure release valve, relief tube flush valve, lock hopper pressurizing valve, lock hopper pump entry valve, recycle pump by-pass valve all connects a Node Controller, time schedule controller is connected with Node Controller, daisy chain bus structure is connected into by communication bus between described Node Controller, time schedule controller is according to the time sequence parameter preset, the signal of sensor feedback generates sequential action command, and send to corresponding Node Controller, the sequential action command received is sent to connected valve by Node Controller, valve is according to the sequential action command action received, complete deslagging-collect slag process again.
9. powdered coal pressuring gasified automatic sludge discharge method according to claim 8, is characterized in that: described deslagging-collect slag process again to comprise the following steps:
1) after, lock hopper and vapourizing furnace separate, time schedule controller is to the Node Controller transmission timing action command be connected with pump entry valve, recycle pump by-pass valve, pressure release valve, sequential action command is sent to corresponding valve by Node Controller, pump entry valve cuts out, recycle pump by-pass valve is opened, pressure release valve is opened, and carries out lock hopper pressure release;
2), when pressure transmitter records lock hopper pressure lower than 0.18MPa, time schedule controller is to the Node Controller transmission timing action command be connected with slag bath surplus valve, relief tube flush valve, slag bath surplus valve cuts out, and relief tube flush valve is opened, and starts the solid particulate cleaned in relief tube;
3), reach setting relief tube scavenging period after, time schedule controller, to the Node Controller transmission timing action command is connected with relief tube flush valve, to cut out relief tube flush valve, stops cleaning;
4) time schedule controller is to the Node Controller transmission timing action command be connected with lock hopper rinse water valve, lock hopper rinse water valve is opened, starts to rinse lock hopper;
5), after having rinsed, time schedule controller is to the Node Controller transmission timing action command be connected with lock hopper discharge valve, lock hopper pressurizing valve, and lock hopper discharge valve is opened, and lock hopper starts deslagging; Open lock hopper pressurizing valve simultaneously, help deslagging;
6), after reaching the lock hopper slag dumping time, time schedule controller, again to the Node Controller transmission timing action command be connected with lock hopper discharge valve, lock hopper pressurizing valve, cuts out lock hopper discharge valve, closes lock hopper pressurizing valve simultaneously, and lock hopper slag dumping stops;
7) after lock hopper discharge valve cuts out, after water level sensor detects and refills water in lock hopper, time schedule controller is to the Node Controller transmission instruction connecting lock hopper rinse water valve, lock hopper pressure release valve, close lock hopper rinse water valve and lock hopper pressure release valve, the setting lock hopper discharge valve turn-off time, after reaching setting-up time, time schedule controller controls to open slag bath surplus valve, lock hopper stops the process of slag dumping, collection slag, pressure release, pressurization, and slag bath buck starts overflow, recycle pump repeats itself;
8), after confirming that lock hopper discharge valve, lock hopper rinse water valve, lock hopper pressure release valve are closed, time schedule controller, to the Node Controller transmission timing action command connecting lock hopper pressurizing valve, is opened lock hopper pressurizing valve, is pressurizeed to lock hopper;
9) when pressure transmitter records lock hopper and vapourizing furnace syngas outlet pressure pressure reduction is less than 0.18MPa, time schedule controller controls to open lock hopper collection slag valve, starts to collect slag; And after lock hopper collection slag valve is opened, time schedule controller controls to cut out lock hopper pressurizing valve, and during lock hopper collection slag, recycle pump is at repeats itself;
10) after lock hopper pressurizing valve is closed, time schedule controller controls ON cycle pump intake valve, closes lock hopper recycle pump by-pass valve, and in lock hopper, in buck and shock chamber, buck circulates;
11) when reaching the collection slag time of setting, time schedule controller controls to cut out lock hopper collection slag valve, opens lock hopper recycle pump by-pass valve, closes pump entry valve simultaneously, completes a deslagging-collect slag process again.
10. powdered coal pressuring gasified automatic sludge discharge method according to claim 9, is characterized in that: the lock hopper deslagging time is 2min, integrates the slag time as 28min.
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