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CN102618332B - Starting/stopping control method and system for powdered coal pressure gasification device - Google Patents

Starting/stopping control method and system for powdered coal pressure gasification device Download PDF

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Publication number
CN102618332B
CN102618332B CN201110438998.XA CN201110438998A CN102618332B CN 102618332 B CN102618332 B CN 102618332B CN 201110438998 A CN201110438998 A CN 201110438998A CN 102618332 B CN102618332 B CN 102618332B
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valve
burner
coal
oxygen
blow down
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CN102618332A (en
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石剑
马琳
丁兴强
丁建平
彭书
朱玉营
吴海峰
杨立峰
姜从斌
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Changzheng Engineering Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention provides a starting/stopping control method and system for a powdered coal pressure gasification device. The method and system control purging stop, oxygen system starting, ignition burner starting, startup burner starting as well as coal burner starting of the powdered coal pressure gasification device. The starting/stopping control method and system have the advantages of high automation degree, concise starting/stopping control, safety and reliability, short starting time, and greatly reduced starting expense.

Description

Open/control method for stopping and system for powdered coal pressuring gasified device
Technical field
The present invention relates to technical field of coal chemical industry, particularly a kind of open/control method for stopping and system for powdered coal pressuring gasified device.
Background technology
Powdered coal pressuring gasified technique is current a kind of advanced person's Coal Gasification Technology, be characterized in the broken coal from feed coal bunker to join pulverize in coal pulverizer, by high temperature inert airflow drying, through positive delivery to vapourizing furnace, with the pure oxygen dividing from sky, high-temp combustion occurring in stove reacts, generate crude synthesis gas, as the unstripped gas of follow-up workshop section, can be widely used in the fields such as coal-based methanol, coal-based synthetic ammonia and coal preparing natural gas, coal synthetic oil processed, olefin hydrocarbon making by coal, coal hydrogen manufacturing, IGCC generating.Current powdered coal pressuring gasified technology mainly has the following disadvantages: control is too complicated, overall operation situation is undesirable, investment cost is high.
Summary of the invention
(1) technical problem that will solve
The object of the present invention is to provide a set of level of automation high, control terse, safe and reliable control method and system, guarantee that the safe operation of powdered coal pressuring gasified device long period, continous-stable is produced.
(2) technical scheme
To achieve these goals, the invention provides a kind of open/control method for stopping for powdered coal pressuring gasified device, described method comprises step: S1, described powdered coal pressuring gasified device is carried out purging before lifting/voltage reducing, after this described powdered coal pressuring gasified device is carried out to lifting/voltage reducing purging, to replace the flammable medium in described powdered coal pressuring gasified device; S2, by valve is controlled, after coal burner oxygen pipeline and fine coal pipeline are purged, oxygen is introduced to igniter burner and startup burner; S3, igniter burner oxygen pipeline and igniter burner fuelgas pipeline are purged, after this by fuel air valve and oxygen valve to described igniter burner, control, make fuel gas and oxygen combustion, thereby ignite described startup burner; S4, startup burner oxygen pipeline and startup burner fuelgas pipeline are purged, after described startup burner is ignited, described igniter burner is quit work, and to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device, in 30 minutes, reach predetermined 1.0MPaG and 800 ℃; S5, make fine coal circulation, when throwing coal condition meets, oxygen and fine coal are dropped into described powdered coal pressuring gasified device, and described startup burner is quit work, and make described fine coal exit circulation, and to described powdered coal pressuring gasified device proceed to boost, warming temperature, it is worked under predetermined pressure and temperature.
Preferably, described step S1 comprises: S11, close crude synthesis gas and remove follow-up system pressure regulator valve, open crude synthesis gas and remove flare system trip valve, and the crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve purges, after having purged, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, S12, when described powdered coal pressuring gasified unit temp is reduced to preset temperature, start described powdered coal pressuring gasified device reduced pressure operation, when described powdered coal pressuring gasified device pressure reaches preset value, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", when described " purge detect protection " is met, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " pattern of pressure ", and carries out " protection of boosting ", S13, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ", S14, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ", if S15 described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", if described " step-down protection " is met, close described crude synthesis gas and remove flare system trip valve, open the injector trip valve that goes into operation.
Preferably, described step S2 comprises: S21, close crude synthesis gas and go follow-up system pressure regulator valve, crude synthesis gas to remove flare system trip valve and the crude synthesis gas torch system pressure variable valve that reduces internal heat, open the injector trip valve that goes into operation, injection low-pressure steam flow remote valve is opened, described powdered coal pressuring gasified device is vacuumized; S22, make igniter burner and startup burner oxygen supply valve and coal burner oxygen supply valve in closing condition, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve; S23, close main oxygen emptying trip valve, close startup burner oxygen emptying trip valve and igniter burner oxygen emptying trip valve; S24, open the by-pass valve of main oxygen trip valve, after the pressure equilibrium before and after main oxygen trip valve, open main oxygen trip valve, close the by-pass valve of described main oxygen trip valve, and described in beating, drive igniter burner and startup burner oxygen supply valve.
Preferably, described step S3 comprises: S31, close coal burner oxygen cutting valve, coal dust charging trip valve, startup burner oxygen the second trip valve and startup burner fuel gas trip valve; S32, open igniter burner oxygen pipeline blow down valve and igniter burner fuelgas pipeline blow down valve, and carry out " purging check ", after upchecking, close igniter burner oxygen emptying valve, described igniter burner oxygen pipeline blow down valve and described igniter burner fuelgas pipeline blow down valve; S33, start the lighter for ignition of described igniter burner, and carry out " lighter for ignition check ", open igniter burner fuel gas trip valve and igniter burner oxygen cutting valve, and carry out " ignition protection "; S34, when described " lighter for ignition check " and described " ignition protection " are met, described igniter burner fuel gas trip valve and described igniter burner oxygen cutting valve being when having opened and having had flame to exist, and closes described lighter for ignition.
Preferably, described step S4 comprises: S41, open startup burner oxygen pipeline blow down valve and startup burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close startup burner oxygen emptying valve, startup burner fuel gas variable valve and startup burner oxygen regulating valve are set to predetermined " startup " aperture simultaneously; S42, open startup burner oxygen the first trip valve, and carry out " startup burner oxygen first trip valve protection ", close described startup burner fuelgas pipeline blow down valve, open startup burner fuel gas trip valve, and startup " protection of startup burner fuel gas trip valve ", close described startup burner oxygen pipeline blow down valve, open startup burner oxygen the second trip valve, and carry out " startup burner oxygen second trip valve protection "; S43, when flame exists, described startup burner fuel gas variable valve and described startup burner oxygen regulating valve are switched to " automatically ", then access " tandem ", start oxygen/fuel gas rate control, close described coal burner oxygen emptying valve, and described igniter burner is quit work, close go into operation injector remote valve and the injector trip valve that goes into operation; S44, open crude synthesis gas and remove flare system trip valve, and the crude synthesis gas torch system pressure variable valve that reduces internal heat is dropped into " automatically " state, in predetermined 30 minutes to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device reach predetermined 1.0MPaG and 800 ℃.
Preferably, the described out-of-work step of described igniter burner that makes comprises: close igniter burner fuel gas trip valve and igniter burner oxygen cutting valve, open igniter burner oxygen pipeline blow down valve and igniter burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close described igniter burner oxygen pipeline blow down valve and described igniter burner fuelgas pipeline blow down valve.
Preferably, described step S5 comprises: S51, close fine coal the first trip valve, fine coal the second trip valve, fine coal the 3rd trip valve, fine coal circulation line blow down valve and fine coal circulation trip valve, fine coal flow control valve is set to predetermined " startup " aperture, open described fine coal circulation trip valve, open described fine coal the first trip valve, fine coal is circulated, S52, when input coal burner condition meets, close coal burner oxygen regulating valve, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve, carry out after the purging of the scheduled time, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, open the by-pass valve of coal burner main oxygen trip valve, and carry out " coal burner main oxygen valve first protection ", when before and after coal burner main oxygen trip valve, pressure reduction is lower than preset value, open described coal burner main oxygen trip valve, and carry out " coal burner main oxygen valve second protection ", close the by-pass valve of described coal burner main oxygen trip valve, described coal burner oxygen regulating valve is set to predetermined " startup " aperture, open described fine coal the 3rd trip valve, and carry out " coal dust trip valve first protection ", open described fine coal the second trip valve, and carry out " coal dust trip valve second protection ", open coal burner oxygen cutting valve, and carry out " coal burner oxygen cutting valve protection ", described coal burner oxygen regulating valve and described fine coal flow control valve are switched to " automatically " position, then access " tandem ", start oxygen/fine coal rate control, S53, described startup burner is quit work, close described fine coal circulation trip valve, open described fine coal circulation line blow down valve and purge, after the purging of the scheduled time, close described fine coal circulation line blow down valve, S54, to described powdered coal pressuring gasified device boost, warming temperature, described powdered coal pressuring gasified device is worked when reaching predetermined pressure and temperature.
Preferably, the described out-of-work step of described startup burner that makes comprises: close startup burner oxygen the first trip valve, startup burner oxygen the second trip valve, igniter burner and startup burner oxygen supply valve and startup burner oxygen regulating valve, close startup burner fuel gas trip valve and startup burner fuel gas variable valve, open startup burner oxygen emptying valve, open startup burner oxygen pipeline blow down valve and startup burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close described startup burner oxygen pipeline blow down valve and described startup burner fuelgas pipeline blow down valve.
Preferably, also comprise and make the out-of-work step of coal burner: close coal burner main oxygen trip valve, the by-pass valve of coal burner main oxygen trip valve, coal burner oxygen cutting valve, coal burner oxygen regulating valve, fine coal the first trip valve, fine coal the second trip valve and fine coal the 3rd trip valve, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve, open fine coal circulation trip valve, standard-sized sheet fine coal flow control valve, open fine coal circulation line blow down valve, after the scheduled time, close fine coal circulation trip valve, fine coal circulation line blow down valve and fine coal flow control valve, close coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve.
The present invention also provides a kind of open/Stop Control System for powdered coal pressuring gasified device, described system comprises: powdered coal pressuring gasified device parking blow device, for described powdered coal pressuring gasified device is carried out purging before lifting/voltage reducing, after this described powdered coal pressuring gasified device is carried out to lifting/voltage reducing purging, to replace the flammable medium in described powdered coal pressuring gasified device; Oxygen system driving device, for by valve is controlled, after coal burner oxygen pipeline and fine coal pipeline are purged, introduces igniter burner and startup burner by oxygen; Igniter burner driving device, for igniter burner oxygen pipeline and igniter burner fuelgas pipeline are purged, after this controls by fuel air valve and oxygen valve to described igniter burner, makes fuel gas and oxygen combustion, thereby ignites described startup burner; Startup burner driving device, for startup burner oxygen pipeline and startup burner fuelgas pipeline are purged, after described startup burner is ignited, quits work described igniter burner, and to described powdered coal pressuring gasified device boost, warming temperature; Coal burner driving device, be used for making fine coal circulation, when throwing coal condition meets, oxygen and fine coal are dropped into described powdered coal pressuring gasified device, and described startup burner is quit work, and make described fine coal exit circulation, and to described powdered coal pressuring gasified device proceed to boost, warming temperature, it is worked under predetermined pressure and temperature.
(3) beneficial effect
Of the present invention opening/control method for stopping and system, level of automation is high, the control of start-stop car is terse, safe and reliable, and the driving time is short, greatly reduces driving expense.
Accompanying drawing explanation
Further describe the present invention with reference to the accompanying drawings and in conjunction with example.Wherein:
Fig. 1 shows the exemplary process diagram of of the present invention opening/control method for stopping.
Fig. 2 shows the process flow sheet of of the present invention opening/control method for stopping.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Fig. 1 and Fig. 2 show respectively exemplary process diagram and the process flow sheet of of the present invention opening/control method for stopping.
As depicted in figs. 1 and 2, according to this embodiment, the invention provides a kind of open/control method for stopping for powdered coal pressuring gasified device, described method comprises:
S1, the operation of powdered coal pressuring gasified device parking nitrogen purging: described powdered coal pressuring gasified device is carried out purging in short-term before lifting/voltage reducing, after this described powdered coal pressuring gasified device being carried out repeatedly to lifting/voltage reducing purges, to replace the flammable medium in described powdered coal pressuring gasified device, for described powdered coal pressuring gasified device is lighted a fire ready;
S2, oxygen system drive to operate: by valve is controlled, after coal burner oxygen pipeline and fine coal pipeline are purged, oxygen is introduced to igniter burner and startup burner, realize the oxygen that draws of oxygen system is operated, for powdered coal pressuring gasified device driving provides combustion-supporting medium;
S3, igniter burner drive to operate: igniter burner oxygen pipeline and igniter burner fuelgas pipeline are purged, after this by fuel air valve and oxygen valve to described igniter burner, control, a small amount of fuel gas and oxygen are lighted under lower pressure, by burned flame, described startup burner ignites;
S4, startup burner drive to operate: startup burner oxygen pipeline and startup burner fuelgas pipeline are purged, after described startup burner is ignited, described igniter burner is quit work, startup burner normal operation input, complete the transition to startup burner by igniter burner, under the protection of safety system (ESD), to described powdered coal pressuring gasified device boost, warming temperature, ready for throwing coal;
S5, coal burner drive to operate: make fine coal circulation, when throwing coal condition meets, oxygen and fine coal are dropped into described powdered coal pressuring gasified device stably, so far, coal burner feeds intake successfully, and described startup burner is quit work, thereby complete the transition to coal burner by startup burner, make described fine coal exit circulation, and to described powdered coal pressuring gasified device proceed to boost, warming temperature, make its under predetermined pressure and temperature at full capacity safe operation produce.
Wherein, described step S1 can specifically comprise:
S11, close crude synthesis gas and remove follow-up system pressure regulator valve PV-0004, HV-0005, open crude synthesis gas and remove flare system trip valve XV-0013, and the crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is switched to " decompression mode ", open coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and fine coal pipeline blow down valve XV-0X11 and carry out 5 minutes nitrogen purgings, after purging and completing for 5 minutes, close described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11;
S12, for example, when described powdered coal pressuring gasified unit temp (: in the time of 220 ℃ of left and right) is reduced to preset temperature, start described powdered coal pressuring gasified device reduced pressure operation, for example, when described powdered coal pressuring gasified device pressure (: in the time of 0.15MPaG) reaches preset value, open described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, and carry out " purge and detect protection ", when described " purge and detect protection " is met, the described crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ", can be pressurized to about 0.4MPaG,
S13, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, the described crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", can be depressured to about 0.15MPaG, if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve PV-0013 that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ", can be pressurized to about 0.4MPaG,
S14, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, the described crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", can be depressured to about 0.15MPaG, if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve PV-0013 that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ", can be pressurized to about 0.4MPaG,
If S15 described " protection of boosting " is met; close described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11; the described crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is switched to " decompression mode "; and carry out " step-down protection "; if described " step-down protection " is met; close described crude synthesis gas and remove flare system trip valve XV-0013, open the injector trip valve XV-0016 that goes into operation.
So far purge operations completes, and through within 5 minutes, purging in short-term and purge operations is pressed in 3 ascending, descendings, the flammable medium that may exist in described powdered coal pressuring gasified device is replaced, for vapourizing furnace is lighted a fire ready.It should be noted that: the time purging in aforesaid operations also can be carried out other setting, for example 3～7 minutes, but should notice that this time is unsuitable too short or long, if this time is too short, may affect purging effect, otherwise, if this overlong time, the too much time of unnecessary waste, has affected the efficiency purging, effect and the efficiency of considering purging, the time purging in the present invention is preferably 5 minutes; In addition, ascending, descending is pressed the number of times of purge operations also can carry out other and is set, and for example 1～5 time, but should notice that this number of times is unsuitable very few or too much, if number of times is very few, may affect purging effect, otherwise, if number of times is too much, too much time of unnecessary waste, affected the efficiency purging, considered effect and the efficiency of purging, in the present invention, ascending, descending presses the number of times purging to be preferably 3 times.
Wherein, described step S2 can specifically comprise:
S21, isolation crude synthesis gas go follow-up system and crude synthesis gas to go flare system, closing crude synthesis gas goes follow-up system pressure regulator valve PV-0004, crude synthesis gas to remove flare system trip valve XV-0013 and the crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat, open the injector trip valve HV-0005 that goes into operation, injection low-pressure steam flow remote valve HV-0006 is opened, described powdered coal pressuring gasified device is vacuumized;
S22, make igniter burner and startup burner oxygen supply valve XV-0003 and coal burner oxygen supply valve XV-0004, XV-0005 in closing condition, open coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and fine coal pipeline blow down valve XV-0X11;
S23, close main oxygen emptying trip valve XV-0006, close startup burner oxygen emptying trip valve XV-0034 and igniter burner oxygen emptying trip valve XV-0069;
S24, open the by-pass valve XV-0002 of main oxygen trip valve, after pressure equilibrium before and after main oxygen trip valve, open main oxygen trip valve XV-0001, close the by-pass valve XV-0002 of described main oxygen trip valve, and described in beating, open igniter burner and startup burner oxygen supply valve XV-0003, after this, can starting ignition burner and startup burner.
Aforesaid operations is that oxygen system drives to operate, in addition, also can carry out oxygen system shut-down operation as required, it comprises: close described main oxygen trip valve XV-0001, described main oxygen trip valve by-pass valve XV-0002, described in open igniter burner and startup burner oxygen supply valve XV-0003 and coal burner oxygen supply valve XV-0004, XV-0005, open main oxygen emptying trip valve XV-0006 and startup burner oxygen emptying trip valve XV-0034.
Wherein, described step S3 can specifically comprise:
S31, close coal burner oxygen cutting valve XV-0120, coal dust charging trip valve XV-0X10, startup burner oxygen the second trip valve XV-0033 and startup burner fuel gas trip valve 0039;
S32, open igniter burner oxygen pipeline blow down valve XV-0068 and igniter burner fuelgas pipeline blow down valve XV-0063, XV-0064, and carry out " purging check ", after upchecking, close igniter burner oxygen emptying valve XV-0070, described igniter burner oxygen pipeline blow down valve XV-0068 and described igniter burner fuelgas pipeline blow down valve XV-0063, XV-0064;
S33, start the lighter for ignition of described igniter burner, and carry out " lighter for ignition check ", open igniter burner fuel gas trip valve XV-0061, XV-0062 and igniter burner oxygen cutting valve XV-0065, XV-0066, and carry out " ignition protection ";
S34, when described " lighter for ignition check " and described " ignition protection " are met, described igniter burner fuel gas trip valve and described igniter burner oxygen cutting valve being when having opened and having had flame to exist, and closes described lighter for ignition.
Wherein, described step S4 can specifically comprise:
S41, open startup burner oxygen pipeline blow down valve XV-0031 and startup burner fuelgas pipeline blow down valve XV-0036, XV-0037, and carry out " purging check ", after completing purging, close startup burner oxygen emptying valve XV-0035, startup burner fuel gas variable valve FV-0034 and startup burner oxygen regulating valve FV-0031 are set to predetermined " startup " aperture simultaneously;
S42, open startup burner oxygen the first trip valve XV-0032, and carry out " startup burner oxygen first trip valve protection ", close described startup burner fuelgas pipeline blow down valve XV-0036, XV-0037, open startup burner fuel gas trip valve XV-0039, and startup " protection of startup burner fuel gas trip valve ", close described startup burner oxygen pipeline blow down valve XV-0031, open startup burner oxygen the second trip valve XV-0033, and carry out " startup burner oxygen second trip valve protection ";
S43, when flame exists, described startup burner fuel gas variable valve FV-0034 and described startup burner oxygen regulating valve FV-0031 are switched to " automatically ", then access " tandem ", start oxygen/fuel gas rate control, so far startup burner feeds intake successfully, close described coal burner oxygen emptying valve XV-0118, and described igniter burner is quit work, so far, igniter burner exits, startup burner normal operation input, complete the transition to startup burner by igniter burner, close go into operation injector remote valve HV-0006 and the injector trip valve XV-0016 that goes into operation,
S44, open crude synthesis gas and remove flare system trip valve XV-0013; and the crude synthesis gas torch system pressure variable valve PV-0013 that reduces internal heat is dropped into " automatically " state; under the normal protection of ESD system; for example, within the scheduled time (: 30 minutes) to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device (for example: 1.0MPaG) and temperature (for example: 800 ℃) reach predetermined pressure.
Wherein, the described out-of-work step of described igniter burner that makes can specifically comprise: close igniter burner fuel gas trip valve XV-0061, XV-0062 and igniter burner oxygen cutting valve XV-0065, XV-0066, open igniter burner oxygen pipeline blow down valve XV-0068 and igniter burner fuelgas pipeline blow down valve XV-0063, XV-0064, and carry out " purging check ", after completing purging, close described igniter burner oxygen pipeline blow down valve XV-0068 and described igniter burner fuelgas pipeline blow down valve XV-0063, XV-0064.
Wherein, described step S5 can specifically comprise: S51, close fine coal the first trip valve XV-0X07, fine coal the second trip valve XV-0X08, fine coal the 3rd trip valve XV-0X10, fine coal circulation line blow down valve XV-0X12 and fine coal circulation trip valve XV-0X13, fine coal flow control valve FV-0X01 is set to predetermined " startup " aperture, open described fine coal circulation trip valve XV-0X13, open described fine coal the first trip valve XV-0X07, fine coal is circulated, thereby according to the pressure of described powdered coal pressuring gasified device, make fine coal from circulation line, switch to the smooth operation of coal burner, S52, when dropping into coal burner condition, (for example: described powdered coal pressuring gasified device interlock protection is effective meet, vapourizing furnace pressure reaches 1.0MPaG, temperature reaches 800 ℃ etc.) time, close coal burner oxygen regulating valve FV-0103, open coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and fine coal pipeline blow down valve XV-0X11, for example carry out the scheduled time, after the purging of (: 2 minutes), close described coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and described fine coal pipeline blow down valve XV-0X11, open the by-pass valve XV-0005 of coal burner main oxygen trip valve, and carry out " coal burner main oxygen valve first protection ", when before and after coal burner main oxygen trip valve, pressure reduction is lower than preset value, open described coal burner main oxygen trip valve XV-0004, and carry out " coal burner main oxygen valve second protection ", close the by-pass valve XV-0005 of described coal burner main oxygen trip valve, described coal burner oxygen regulating valve FV-0103 is set to predetermined " startup " aperture, open described fine coal the 3rd trip valve XV-0X10, and carry out " coal dust trip valve first protection ", open described fine coal the second trip valve XV-0X08, and carry out " coal dust trip valve second protection ", open coal burner oxygen cutting valve XV-0120, and carry out " coal burner oxygen cutting valve protection ", described coal burner oxygen regulating valve FV-0103 and described fine coal flow control valve FV-0X01 are switched to " automatically " position, then access " tandem ", start oxygen/fine coal rate control, so far coal burner feeds intake successfully, S53, described startup burner is quit work, startup burner exits, thereby complete the transition to coal burner by startup burner, close described fine coal circulation trip valve XV-0X13, open described fine coal circulation line blow down valve XV-0X12 and purge, for example, after the purging of the scheduled time (: 2 minutes), close described fine coal circulation line blow down valve XV-0X12, thereby the coal dust in fine coal circulation line is cleaned out from pipeline, S54, feed intake successfully after, under ESD system protection, to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device reach predetermined pressure (for example: 4.0MPaG) and temperature (for example: 1300 ℃ of left and right), safe operation is produced at full capacity.
Wherein, the described out-of-work step of described startup burner that makes can specifically comprise: close startup burner oxygen the first trip valve XV-0032, startup burner oxygen the second trip valve XV-0033, igniter burner and startup burner oxygen supply valve XV-0003 and startup burner oxygen regulating valve FV-0031, close startup burner fuel gas trip valve XV-0039 and startup burner fuel gas variable valve FV-0034, open startup burner oxygen emptying valve XV-0034, XV-0035, open startup burner oxygen pipeline blow down valve XV-0031 and startup burner fuelgas pipeline blow down valve XV-0036, XV-0037, and carry out " purging check ", after completing purging, close described startup burner oxygen pipeline blow down valve XV-0031 and described startup burner fuelgas pipeline blow down valve XV-0036, XV-0037.
Wherein, can also specifically comprise and make the out-of-work step of coal burner: close coal burner main oxygen trip valve XV-0004, the by-pass valve XV-0005 of coal burner main oxygen trip valve, coal burner oxygen cutting valve XV-0120, coal burner oxygen regulating valve FV-0103, fine coal the first trip valve XV-0X07, fine coal the second trip valve XV-0X08 and fine coal the 3rd trip valve XV-0X10, open coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and fine coal pipeline blow down valve XV-0X11, open fine coal circulation trip valve XV-0X13, standard-sized sheet fine coal flow control valve FV-0X01, open fine coal circulation line blow down valve XV-0X12, for example, after the scheduled time (: 2 minutes), treat that the coal dust complete liquidation in fine coal pipeline is clean, close fine coal circulation trip valve XV-0X13, fine coal circulation line blow down valve XV-0X12 and fine coal flow control valve FV-0X01, close coal burner oxygen pipeline blow down valve XV-0121, XV-0122 and fine coal pipeline blow down valve XV-0X11.
It should be noted that: in the above-described embodiments, what for the gas purging, use is nitrogen, still, also can use carbon dioxide or other applicable gas.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the various embodiment with various modifications that the present invention's design is suitable for specific end use.

Claims (10)

1. for an open/control method for stopping for powdered coal pressuring gasified device, it is characterized in that, comprise step:
S1, described powdered coal pressuring gasified device is carried out purging before lifting/voltage reducing, after this described powdered coal pressuring gasified device is carried out to lifting/voltage reducing purging, to replace the flammable medium in described powdered coal pressuring gasified device;
S2, by valve is controlled, after coal burner oxygen pipeline and fine coal pipeline are purged, oxygen is introduced to igniter burner and startup burner;
S3, igniter burner oxygen pipeline and igniter burner fuelgas pipeline are purged, after this by fuel air valve and oxygen valve to described igniter burner, control, make fuel gas and oxygen combustion, thereby ignite described startup burner;
S4, startup burner oxygen pipeline and startup burner fuelgas pipeline are purged, after described startup burner is ignited, described igniter burner is quit work, and to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device, in 30 minutes, reach predetermined 1.0MPaG and 800 ℃;
S5, make fine coal circulation, when throwing coal condition meets, oxygen and fine coal are dropped into described powdered coal pressuring gasified device, and described startup burner is quit work, and make described fine coal exit circulation, and to described powdered coal pressuring gasified device proceed to boost, warming temperature, it is worked under predetermined pressure and temperature.
2. the method for claim 1, is characterized in that, described step S1 comprises:
S11, close crude synthesis gas and remove follow-up system pressure regulator valve, open crude synthesis gas and remove flare system trip valve, and the crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve purges, after having purged, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve;
S12, when described powdered coal pressuring gasified unit temp is reduced to preset temperature, start described powdered coal pressuring gasified device reduced pressure operation, when described powdered coal pressuring gasified device pressure reaches preset value, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", when described " purge detect protection " is met, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " pattern of pressure ", and carries out " protection of boosting ";
S13, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ",
S14, if described " protection of boosting " is met, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode ", and carry out " step-down protection ", if described " step-down protection " is met, open described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, and carry out " purge and detect protection ", if described " purge and detect protection " is met, the torch system pressure variable valve that described crude synthesis gas reduced internal heat is switched to " pattern of pressure ", and carry out " protection of boosting ",
If S15 described " protection of boosting " is met; close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve; the described crude synthesis gas torch system pressure variable valve that reduces internal heat is switched to " decompression mode "; and carry out " step-down protection "; if described " step-down protection " is met; close described crude synthesis gas and remove flare system trip valve, open the injector trip valve that goes into operation.
3. the method for claim 1, is characterized in that: described step S2 comprises:
S21, close crude synthesis gas and go follow-up system pressure regulator valve, crude synthesis gas to remove flare system trip valve and the crude synthesis gas torch system pressure variable valve that reduces internal heat, open the injector trip valve that goes into operation, injection low-pressure steam flow remote valve is opened, described powdered coal pressuring gasified device is vacuumized;
S22, make igniter burner and startup burner oxygen supply valve and coal burner oxygen supply valve in closing condition, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve;
S23, close main oxygen emptying trip valve, close startup burner oxygen emptying trip valve and igniter burner oxygen emptying trip valve;
S24, open the by-pass valve of main oxygen trip valve, after the pressure equilibrium before and after main oxygen trip valve, open main oxygen trip valve, close the by-pass valve of described main oxygen trip valve, and described in beating, drive igniter burner and startup burner oxygen supply valve.
4. the method for claim 1, is characterized in that, described step S3 comprises:
S31, close coal burner oxygen cutting valve, coal dust charging trip valve, startup burner oxygen the second trip valve and startup burner fuel gas trip valve;
S32, open igniter burner oxygen pipeline blow down valve and igniter burner fuelgas pipeline blow down valve, and carry out " purging check ", after upchecking, close igniter burner oxygen emptying valve, described igniter burner oxygen pipeline blow down valve and described igniter burner fuelgas pipeline blow down valve;
S33, start the lighter for ignition of described igniter burner, and carry out " lighter for ignition check ", open igniter burner fuel gas trip valve and igniter burner oxygen cutting valve, and carry out " ignition protection ";
S34, when described " lighter for ignition check " and described " ignition protection " are met, described igniter burner fuel gas trip valve and described igniter burner oxygen cutting valve being when having opened and having had flame to exist, and closes described lighter for ignition.
5. the method for claim 1, is characterized in that: described step S4 comprises:
S41, open startup burner oxygen pipeline blow down valve and startup burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close startup burner oxygen emptying valve, startup burner fuel gas variable valve and startup burner oxygen regulating valve are set to predetermined " startup " aperture simultaneously;
S42, open startup burner oxygen the first trip valve, and carry out " startup burner oxygen first trip valve protection ", close described startup burner fuelgas pipeline blow down valve, open startup burner fuel gas trip valve, and startup " protection of startup burner fuel gas trip valve ", close described startup burner oxygen pipeline blow down valve, open startup burner oxygen the second trip valve, and carry out " startup burner oxygen second trip valve protection ";
S43, when flame exists, described startup burner fuel gas variable valve and described startup burner oxygen regulating valve are switched to " automatically ", then access " tandem ", start oxygen/fuel gas rate control, close described coal burner oxygen emptying valve, and described igniter burner is quit work, close go into operation injector remote valve and the injector trip valve that goes into operation;
S44, open crude synthesis gas and remove flare system trip valve, and the crude synthesis gas torch system pressure variable valve that reduces internal heat is dropped into " automatically " state, in predetermined 30 minutes to described powdered coal pressuring gasified device boost, warming temperature, make described powdered coal pressuring gasified device reach predetermined 1.0MPaG and 800 ℃.
6. method as claimed in claim 5, is characterized in that: described in the out-of-work step of described igniter burner is comprised:
Close igniter burner fuel gas trip valve and igniter burner oxygen cutting valve, open igniter burner oxygen pipeline blow down valve and igniter burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close described igniter burner oxygen pipeline blow down valve and described igniter burner fuelgas pipeline blow down valve.
7. the method for claim 1, is characterized in that: described step S5 comprises:
S51, close fine coal the first trip valve, fine coal the second trip valve, fine coal the 3rd trip valve, fine coal circulation line blow down valve and fine coal circulation trip valve, fine coal flow control valve is set to predetermined " startup " aperture, open described fine coal circulation trip valve, open described fine coal the first trip valve, fine coal is circulated;
S52, when input coal burner condition meets, close coal burner oxygen regulating valve, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve, carry out after the purging of the scheduled time, close described coal burner oxygen pipeline blow down valve and described fine coal pipeline blow down valve, open the by-pass valve of coal burner main oxygen trip valve, and carry out " coal burner main oxygen valve first protection ", when before and after coal burner main oxygen trip valve, pressure reduction is lower than preset value, open described coal burner main oxygen trip valve, and carry out " coal burner main oxygen valve second protection ", close the by-pass valve of described coal burner main oxygen trip valve, described coal burner oxygen regulating valve is set to predetermined " startup " aperture, open described fine coal the 3rd trip valve, and carry out " coal dust trip valve first protection ", open described fine coal the second trip valve, and carry out " coal dust trip valve second protection ", open coal burner oxygen cutting valve, and carry out " coal burner oxygen cutting valve protection ", described coal burner oxygen regulating valve and described fine coal flow control valve are switched to " automatically " position, then access " tandem ", start oxygen/fine coal rate control,
S53, described startup burner is quit work, close described fine coal circulation trip valve, open described fine coal circulation line blow down valve and purge, after the purging of the scheduled time, close described fine coal circulation line blow down valve;
S54, to described powdered coal pressuring gasified device boost, warming temperature, described powdered coal pressuring gasified device is worked when reaching predetermined pressure and temperature.
8. method as claimed in claim 7, is characterized in that: described in the out-of-work step of described startup burner is comprised:
Close startup burner oxygen the first trip valve, startup burner oxygen the second trip valve, igniter burner and startup burner oxygen supply valve and startup burner oxygen regulating valve, close startup burner fuel gas trip valve and startup burner fuel gas variable valve, open startup burner oxygen emptying valve, open startup burner oxygen pipeline blow down valve and startup burner fuelgas pipeline blow down valve, and carry out " purging check ", after completing purging, close described startup burner oxygen pipeline blow down valve and described startup burner fuelgas pipeline blow down valve.
9. method as claimed in claim 7 or 8, is characterized in that: also comprise and make the out-of-work step of coal burner:
Close coal burner main oxygen trip valve, the by-pass valve of coal burner main oxygen trip valve, coal burner oxygen cutting valve, coal burner oxygen regulating valve, fine coal the first trip valve, fine coal the second trip valve and fine coal the 3rd trip valve, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve, open fine coal circulation trip valve, standard-sized sheet fine coal flow control valve, open fine coal circulation line blow down valve, after the scheduled time, close fine coal circulation trip valve, fine coal circulation line blow down valve and fine coal flow control valve, close coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve.
10. for an open/Stop Control System for powdered coal pressuring gasified device, it is characterized in that, comprising:
Powdered coal pressuring gasified device parking blow device, for described powdered coal pressuring gasified device is carried out purging before lifting/voltage reducing, after this carries out lifting/voltage reducing purging to described powdered coal pressuring gasified device, to replace the flammable medium in described powdered coal pressuring gasified device;
Oxygen system driving device, for by valve is controlled, after coal burner oxygen pipeline and fine coal pipeline are purged, introduces igniter burner and startup burner by oxygen;
Igniter burner driving device, for igniter burner oxygen pipeline and igniter burner fuelgas pipeline are purged, after this controls by fuel air valve and oxygen valve to described igniter burner, makes fuel gas and oxygen combustion, thereby ignites described startup burner;
Startup burner driving device, for startup burner oxygen pipeline and startup burner fuelgas pipeline are purged, after described startup burner is ignited, quits work described igniter burner, and to described powdered coal pressuring gasified device boost, warming temperature;
Coal burner driving device, be used for making fine coal circulation, when throwing coal condition meets, oxygen and fine coal are dropped into described powdered coal pressuring gasified device, and described startup burner is quit work, and make described fine coal exit circulation, and to described powdered coal pressuring gasified device proceed to boost, warming temperature, it is worked under predetermined pressure and temperature.
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