CN104974798B - Control method for operation of pulverized coal burner of pulverized coal pressure gasification reaction device - Google Patents
Control method for operation of pulverized coal burner of pulverized coal pressure gasification reaction device Download PDFInfo
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- CN104974798B CN104974798B CN201510395039.2A CN201510395039A CN104974798B CN 104974798 B CN104974798 B CN 104974798B CN 201510395039 A CN201510395039 A CN 201510395039A CN 104974798 B CN104974798 B CN 104974798B
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- 239000003245 coal Substances 0.000 title claims abstract description 297
- 238000002309 gasification Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000001301 oxygen Substances 0.000 claims abstract description 121
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 121
- 238000010926 purge Methods 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 238000003786 synthesis reaction Methods 0.000 claims description 8
- 229910001882 dioxygen Inorganic materials 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 4
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 238000005201 scrubbing Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 206010020852 Hypertonia Diseases 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 238000005474 detonation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000007600 charging Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- -1 polyoxy Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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]
Abstract
The invention provides a control method for operation of a pulverized coal burner of a pulverized coal pressure gasification reaction device, which is used for grouped control of a plurality of oxygen pipelines and a plurality of pulverized coal pipeline feeding of the pulverized coal burner of the pulverized coal pressure gasification reaction device and comprises start-up, operation, stop and purging of the pulverized coal burner. The invention can realize the simultaneous feeding or the grouped feeding of the multiple oxygen pipelines of the pulverized coal burner and the multiple pulverized coal pipelines, can also realize the simultaneous stopping or the grouped stopping of the multiple oxygen pipelines of the pulverized coal burner and the multiple pulverized coal pipelines, can realize the online maintenance of the oxygen pipelines and the pulverized coal pipelines, and ensures the long-period, continuous and stable safe operation and production of the pulverized coal pressure gasification device. The gasifier emergency safety system keeps the device running and enables the device to be started, stopped and purged safely.
Description
Technical field
The present invention relates to technical field of coal chemical industry more particularly to a kind of powdered coal pressuring gasified reaction unit fine coal burner operations
Control method.
Background technique
Powdered coal pressuring gasified technology be it is a kind of it is clean, all kinds of solid coals are efficiently converted to gaseous hydrogen and an oxygen
The advanced technology for changing carbon mixed gas is continuously introduced into the basic principle is that coal to be milled into dry coal dust with inert gas
Gasification furnace with water-cooling wall, under high-temperature and high-pressure conditions, by the ratio and object that accurately control the raw materials such as coal, oxygen and vapor
Material is uniformly distributed, and the raw gas of gas containing co hydrogenation >=90% is generated by reaction, then, by Quench, is separated, is washed
It the technical process such as washs, isolates solid body, obtain pure saturated mode synthetic gas, the raw gas efficiency of carbon con version of generation is high,
Effective gas component content is high, and methane content is low.It is worn into its main feature is that the broken coal from feed coal bunker is added in coal pulverizer
Powdery, it is pressurized to be delivered to gasification furnace by high temperature inert airflow drying, high-temp combustion occurs in furnace with the pure oxygen from space division
Reaction generates crude synthesis gas, as the unstripped gas of subsequent workshop section, can be widely applied to coal-based methanol, coal base synthesis ammonia and
The fields such as natural gas from coal, coal synthetic oil, coal-to-olefin, coal hydrogen manufacturing, IGCC power generation.
Traditional coal burner uses single control method are as follows: no matter oxygen system or fine coal transportation system are asked
Topic, gasification furnace will parking maintenance.
Summary of the invention
(1) technical problems to be solved
The present invention provide a set of high degree of automation, terse, safe and reliable single fire (spray) the mouth polyoxy gas pipeline of control with
A plurality of fine coal pipeline charging, is grouped the method and system of control, can be realized the on-bne repair of oxygen pipeline and fine coal pipeline, really
Protect the safe operation production of powdered coal pressuring gasified device long period, continuous-stable.The present invention also provides a set of safety interlocking guarantors
Maintaining method.
(2) technical solution
A kind of control method of powdered coal pressuring gasified reaction unit fine coal burner operation, the method includes startup burners
0.8MPaG-1.2MPaG and 600 DEG C -1000 DEG C, preferably 1.0MPaG and 800 DEG C are run and are boosted to, throw coal condition to meet,
First group of feed system and second group of feed system are simultaneously or respectively by fine coal and oxygen investment coal gasification reaction dress at this time
It sets, and startup burner is made to stop working, to complete by startup burner to the transition of coal burner, and exit the fine coal and follow
Ring, and boosting, warming temperature are continued to coal gasification reaction unit, so that it is worked at the predetermined pressure and temperature；Such as
First group of feed system of fruit goes wrong, then stops first group of feed system, starts first group of feed system and purges program, and leads to
Enter to protect gas；If second group of feed system goes wrong, stop second group of feed system, second group of feed system of starting is blown
Program is swept, and is passed through protection gas；If the other systems of gasification furnace go wrong, two groups of feed systems are simultaneously stopped, and are opened simultaneously
The purging program of dynamic two groups of feed systems, and it is passed through protective gas simultaneously.
First group of feed system includes: an oxygen pipeline, two to four fine coal pipelines and a superheated steam pipeline.The
One group of feed system driving step are as follows: (1) it opens first group fine coal and recycles stop valve, open first group of first stop valve of fine coal,
Recycle fine coal；(2) when first group of condition of feeding intake meets, the bypass of first group of first stop valve of oxygen of coal burner is opened
Valve when pressure difference is lower than predetermined value before and after first group of first stop valve of oxygen, opens first group of first stop valve of oxygen of coal burner,
The bypass valve for closing first group of first stop valve of oxygen of coal burner sets first group of oxygen flow rate adjusting valve of coal burner to predetermined
Start aperture, open first group of second stop valve of fine coal and first group of fine coal third stop valve, opens first group of oxygen of coal burner
First group of oxygen flow rate adjusting valve of the coal burner and first group of fine coal flow control valve are started " oxygen/powder by final cutting valve
Coal " rate control；
(3) all first group of fine coal stop valves are closed, first group of fine coal pipeloop blow down valve is opened and is purged, passed through
After the purging of predetermined time, first group of fine coal pipeloop blow down valve is closed；
(4) all first group of superheated steam stop valves are opened, first group of flow of superheated steam adjustable valve is set to starting
Aperture starts first group of flow of superheated steam adjustable valve and first group of oxygen flow rate adjusting valve " steam/oxygen gas " ratio
Example control.
Second group of feed system includes: an oxygen pipeline, one to three fine coal pipelines and a superheated steam pipeline.The
Two groups of feed system driving steps are as follows: (1) it opens second group fine coal and recycles stop valve, open second group of first stop valve of fine coal,
Recycle fine coal；(2) when second group of condition of feeding intake meets, the bypass valve of second group of first stop valve of oxygen is opened, when
When pressure difference is lower than predetermined value before and after second group of first stop valve of oxygen, second group of first stop valve of oxygen of coal burner is opened, is closed
Second group of oxygen flow rate adjusting valve of coal burner is set to predetermined starting and is opened by the bypass valve of second group of oxygen cutting valve of coal burner
Degree opens second group of second stop valve of fine coal and second group of fine coal third stop valve, opens second group of oxygen of coal burner and finally cuts
Disconnected valve, by second group of oxygen flow rate adjusting valve of the coal burner and second group of fine coal flow control valve starting " oxygen/fine coal " ratio
Rate control；
(3) all second group of fine coal are closed and recycle stop valve, opened second group of fine coal pipeloop blow down valve and purged,
After the purging of predetermined time, second group of fine coal pipeloop blow down valve is closed；
(4) all second group of superheated steam stop valves are opened, second group of flow of superheated steam adjustable valve is set to starting
Aperture starts second group of oxygen flow rate adjusting valve " steam/oxygen of second group of flow of superheated steam adjustable valve and the coal burner
The control of gas " ratio.
The other systems of gasification furnace include: gasification furnace own system；Synthesis gas system；Burner nozzle cooling water system, medium-pressure boiler
Water system；Gasify water circulation system；Public engineer system.
The process variable of two sets of feed systems of triggering secure parking protection simultaneously mainly has: gasification furnace hypertonia, synthesis
Temperature spends high, coal burner cooling water total flow and each branch flow of coal burner cooling water is too low, burner cooling water liquid filling position mistake
It is low, liquid level of steam drum is too high or too low, boiler cycle pump is worked normally less than two, to the boiler circulating water flow mistake of coil pipe
It is low, shock chamber's liquid level is too low, Quench water flow is too low, scrubbing tower liquid level is too low, dreg-locking hopper circulating pump stops working, instrument air
Too low, nitrogen or carbon dioxide manifold pressure is too low, fiery inspection dropout, stop button.
Wherein there is dangerous situation parking step in a set of feed system are as follows: (1) coal for closing a set of feed system is burnt
First stop valve, the bypass valve of coal burner the first stop valve of oxygen, coal burner oxygen flow rate adjusting valve, coal burner oxygen after mouth oxygen
Gas final cutting valve, the first stop valve of fine coal, the second stop valve of fine coal and fine coal third stop valve open coal burner oxygen pipeline
Blow down valve and fine coal pipeline blow down valve；(2) all stop valves of superheated steam pipeline and flow stop valve are closed；(3) fine coal is opened
Stop valve, standard-sized sheet fine coal flow control valve are recycled, standard-sized sheet conveying high-pressure nitrogen flow regulating valve is closed after the predetermined time
Fine coal recycles stop valve, opens fine coal pipeloop blow down valve；(4) fine coal pipeloop purging after a certain period of time, closes fine coal
Pipeloop blow down valve and fine coal flow control valve close the main blow down valve of coal burner oxygen pipeline, in order to avoid can in gasification furnace
Combustion things matter enters oxygen channel, causes oxygen pipeline detonation, need to keep the small flow blow down valve of coal burner oxygen pipeline and fine coal pipe
Line blow down valve is in an open state.
The step of two sets of feed systems secure parking work simultaneously: the coal burner oxygen institute of two feed systems is simultaneously closed off
There are stop valve and all stop valves of oxygen flow rate adjusting valve, fine coal, all stop valves of superheated steam pipeline and flow control valve, beats
Open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve；Opening fine coal circulation stop valve, standard-sized sheet fine coal flow control valve,
Standard-sized sheet conveying high-pressure nitrogen flow regulating valve closes fine coal and recycles stop valve, open fine coal pipeloop after the predetermined time
Blow down valve；Fine coal pipeloop purges after a certain period of time, closes fine coal pipeloop blow down valve and fine coal flow control valve, closes
Coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve.
(3) beneficial effect
The present invention provides a set of high degree of automation, controls terse, safe and reliable single fire mouth multiple groups charging, grouping control
Method and system, can be realized the on-bne repair of oxygen pipeline and fine coal pipeline, it is ensured that powdered coal pressuring gasified device long period,
The safe operation of continuous-stable produces.
Detailed description of the invention
Fig. 1 is present system frame diagram.
Fig. 2 is process flow chart of the invention.
Fig. 3 is driving sequence control process figure of the present invention.
Fig. 4 is present invention parking sequence control process figure.
In figure, A1 is that gasification furnace is purged, lighted a fire, go into operation system；A2 is first group of fine coal burner feed system；A3 is second
Group fine coal burner feed system；A4 is the other systems of gasification furnace；A5 is coal gasification reaction unit.
Specific embodiment
It is subject to attached drawing below by specific embodiment, the present invention will be described in detail.
Embodiment 1
As shown in Figure 1, two sets of feed systems A2 and A3 are simultaneously after startup burner runs and boosts to 1.0MPaG and 800 DEG C
Fine coal circulation is enabled or enables respectively, when throwing coal condition meets, A2 and A3 are enabled simultaneously or respectively by fine coal and oxygen
Coal gasification reaction unit A5 is put into, and so that startup burner is stopped working, and so that the fine coal is exited circulation, and to fine coal gas
Change reaction unit and continue boosting, warming temperature, it is made to work at the predetermined pressure and temperature.If two sets of feed systems
When feeding intake respectively, then the oxygen pipeline of second set of feed system and fine coal pipeline will be passed through before first set feed system feeds intake
Protective gas.
As shown in Figure 2: first group of feed system A2 includes: an oxygen pipeline, two to four fine coal pipelines and a mistake
Hot steam pipeline.First group of feed system A2 driving step are as follows: A21, open the fine coal circulation stop valve, open first group of powder
The first stop valve of coal recycles fine coal；A22, when first group of condition of feeding intake meets, open first group of oxygen of coal burner the
The bypass valve of one stop valve when pressure difference is lower than predetermined value before and after first group of first stop valve of oxygen, opens first group of coal burner
The first stop valve of oxygen closes the bypass valve of first group of first stop valve of oxygen of coal burner, by first group of oxygen flow of coal burner
Regulating valve is set to predetermined starting aperture, opens first group of second stop valve of fine coal and first group of fine coal third stop valve, is opened
First group of oxygen final cutting valve of coal burner, by first group of oxygen flow rate adjusting valve of the coal burner and first group of fine coal flow tune
It saves valve and starts " oxygen/fine coal " rate control；A23, all first group of fine coal stop valves are closed, opens first group of fine coal circulation pipe
Line blow down valve is purged, and after the purging of predetermined time, closes first group of fine coal pipeloop blow down valve；A24, institute is opened
There is first group of superheated steam stop valve, first group of flow of superheated steam adjustable valve is set to starting aperture, starting described first
Group flow of superheated steam adjustable valve and first group of oxygen flow rate adjusting valve " steam/oxygen gas " ratio control.
Second group of feed system A3 includes: an oxygen pipeline, one to three fine coal pipelines.Second group of feed system A3 is opened
Vehicle step are as follows: A31, open the fine coal circulation stop valve, open second group of first stop valve of fine coal, recycle fine coal；
A32, when second group of condition of feeding intake meets, open second group of first stop valve of oxygen bypass valve, when second group of oxygen first
When pressure difference is lower than predetermined value before and after stop valve, second group of first stop valve of oxygen of coal burner is opened, closes second group of oxygen of coal burner
Second group of oxygen flow rate adjusting valve of coal burner is set to predetermined starting aperture, opens second group of powder by the bypass valve of gas stop valve
The second stop valve of coal and second group of fine coal third stop valve open second group of oxygen final cutting valve of coal burner, the coal are burnt
Second group of oxygen flow rate adjusting valve of mouth and second group of fine coal flow control valve start " oxygen/fine coal " rate control；A33, closing
All second group of fine coal recycle stop valve, open second group of fine coal pipeloop blow down valve and are purged, by the predetermined time
After purging, second group of fine coal pipeloop blow down valve is closed；A34, all second group of superheated steam stop valves are opened, by second group
Flow of superheated steam adjustable valve is set to starting aperture, starts second group of flow of superheated steam adjustable valve and the coal burner
Second group of oxygen flow rate adjusting valve " steam/oxygen gas " ratio control.
The other system A4 of gasification furnace include:
A41, gasification furnace own system (gasification furnace pressure, fire box temperature, gasification furnace upper cone section outside wall temperature)；A42, synthesis
Gas system (outlet syngas temperatures)；A43, burner nozzle cooling water system (coal burner cooling water total flow, each point of coal burner cooling water
Zhi Liuliang, burner cooling water liquid filling position)；A44, medium-pressure boiler water system (liquid level of steam drum, boiler cycle pump, the pot to coil pipe
Furnace circulating water flow)；A45, gasification water circulation system (shock chamber's liquid level, scrubbing tower liquid level, Quench water flow, dreg-locking hopper circulation
Pump)；A46, public engineer system (instrument air pressure, nitrogen or carbon dioxide manifold pressure).Present invention triggering two packs into
The process variable of material system secure parking protection simultaneously mainly has: gasification furnace hypertonia, synthesis gas temperature are excessively high, coal burner is cold
But water total flow and each branch flow of coal burner cooling water are too low, burner cooling water liquid filling position is too low, liquid level of steam drum is excessively high or mistake
Low, boiler cycle pump works normally less than two, to coil pipe boiler circulating water flow is too low, shock chamber's liquid level is too low, sharp
Cold water flow is too low, scrubbing tower liquid level is too low, dreg-locking hopper circulating pump stops working, instrument air is too low, nitrogen or titanium dioxide
Carbon manifold pressure is too low, fiery inspection dropout, stop button.
As shown in Figure 3: coal burner drives to operate: fine coal is recycled, it is when throwing coal condition meets, oxygen and fine coal is steady
The investment powdered coal pressuring gasified device, so far, coal burner feeds intake success, and the startup burner is made to stop working, thus
It completes to make the fine coal exit circulation, and continue the powdered coal pressuring gasified device by startup burner to the transition of coal burner
It is boosted, warming temperature, makes its safe operation production at full capacity at the predetermined pressure and temperature.
As shown in Figure 4: wherein set of system oxygen pipeline or fine coal pipeline occur in two sets of feed system A2 and A3 systems
When dangerous situation, only it need to stop the set of system for dangerous situation occur, it is another set of still to continue on-line operation.Wherein a set of system
There is dangerous situation parking step in system are as follows: (1) closes the first stop valve, coal burning after the coal burner oxygen of a set of feed system
Bypass valve, coal burner oxygen flow rate adjusting valve, coal burner oxygen final cutting valve, the fine coal first of the first stop valve of mouth oxygen are cut
Disconnected valve, the second stop valve of fine coal and fine coal third stop valve, open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve；
(2) all stop valves of superheated steam pipeline and flow stop valve are closed；(3) it opens fine coal and recycles stop valve, standard-sized sheet fine coal flow
Regulating valve, standard-sized sheet conveying high-pressure nitrogen flow regulating valve close fine coal and recycle stop valve, open fine coal after the predetermined time
Pipeloop blow down valve；(4) fine coal pipeloop purging after a certain period of time, closes fine coal pipeloop blow down valve and fine coal flow
Regulating valve closes the main blow down valve of coal burner oxygen pipeline in order to avoid combustible enters oxygen channel in gasification furnace and causes oxygen
Gas pipeline detonation need to keep the small flow blow down valve of coal burner oxygen pipeline and fine coal pipeline blow down valve to be in an open state.
The present invention, which triggers set of system oxygen pipeline or fine coal pipeline, to be there is dangerous situation and has: to burner coal flow velocity too
It is low, to coal burner fine coal density it is too low, to coal burner oxygen flow it is too low, to burner oxygen flow is too high, single set system oxygen
Coal is than too high, fine coal feedstock vessel and " oxygen/steam mixing tube " positive differential pressure is too small, oxygen and gasification furnace positive differential pressure are too small, oxygen
Exhausting pipeline valve is not turned off, fine coal end stop valve fails to fully open, coal reversal valve fails to fully open, oxygen cutting valve not
It can fully open.
The step of two sets of feed systems secure parking work simultaneously: the coal burner oxygen institute of two feed systems is simultaneously closed off
There are stop valve and all stop valves of oxygen flow rate adjusting valve, fine coal, all stop valves of superheated steam pipeline and flow control valve, beats
Open coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve；Opening fine coal circulation stop valve, standard-sized sheet fine coal flow control valve,
Standard-sized sheet conveying high-pressure nitrogen flow regulating valve closes fine coal and recycles stop valve, open fine coal pipeloop after the predetermined time
Blow down valve, fine coal pipeloop purge after a certain period of time, close fine coal pipeloop blow down valve and fine coal flow control valve, close
Coal burner oxygen pipeline blow down valve and fine coal pipeline blow down valve.
It should be understood that in the above-described embodiments, all joined superheated steam in two groups of chargings, but it is also possible to only
Superheated steam is added in wherein one group of charging.
Embodiment 2
According to the identical method of embodiment 1, only startup burner runs and boosts to 0.8MPaG and 1000 DEG C.
Embodiment 3
According to the identical method of embodiment 1, only startup burner runs and boosts to 1.2MPaG and 600 DEG C.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and the embodiment is not to limit this hair
Bright the scope of the patents, all equivalence enforcements or change without departing from carried out by the present invention, is intended to be limited solely by the scope of the patents of this case.
Claims (6)
1. a kind of control method of powdered coal pressuring gasified reaction unit fine coal burner operation, the method be single fire mouth multiple groups into
Material, grouping control method comprising: startup burner runs and boosts to 0.8MPaG-1.2MPaG and 600 DEG C -1000 DEG C, with
Meet and throw coal condition, fine coal and oxygen are put into powder simultaneously or respectively by first group of feed system and second group of feed system at this time
Coal gasification reaction device, and startup burner is made to stop working, to complete by startup burner to the transition of coal burner, and make institute
It states fine coal and exits circulation, and boosting, warming temperature are continued to coal gasification reaction unit, make it in scheduled pressure and temperature
The lower work of degree；If first group of feed system goes wrong, stop first group of feed system, first group of feed system of starting is blown
Program is swept, and is passed through protection gas；If second group of feed system goes wrong, stop second group of feed system, starting second
Group feed system purges program, and is passed through protection gas；If the other systems of gasification furnace go wrong, two groups of feed systems are simultaneously
Stop, while starting the purging program of two groups of feed systems, and be passed through protective gas simultaneously；
Further, first group of feed system includes: an oxygen pipeline, two to four fine coal pipelines and an overheated steam pipe
Line；First group of feed system driving step are as follows:
(1) it opens fine coal and recycles stop valve, open first group of first stop valve of fine coal, recycle fine coal；
(2) when first group of condition of feeding intake meets, the bypass valve of first group of first stop valve of oxygen of coal burner is opened, when first group
When pressure difference is lower than predetermined value before and after the first stop valve of oxygen, first group of first stop valve of oxygen of coal burner is opened, closes coal burner
The bypass valve of first group of first stop valve of oxygen sets first group of oxygen flow rate adjusting valve of coal burner to predetermined starting aperture,
First group of second stop valve of fine coal and first group of fine coal third stop valve are opened, the first group of oxygen final cutting of coal burner is opened
First group of oxygen flow rate adjusting valve of the coal burner and first group of fine coal flow control valve are started " oxygen/fine coal " ratio by valve
Control；
(3) all first group of fine coal stop valves are closed, first group of fine coal pipeloop blow down valve is opened and is purged, by predetermined
After the purging of time, first group of fine coal pipeloop blow down valve is closed；
(4) all first group of superheated steam stop valves are opened, first group of flow of superheated steam adjustable valve is set to starting aperture,
Start first group of flow of superheated steam adjustable valve and first group of oxygen flow rate adjusting valve " steam/oxygen gas " ratio control
System；
Further, second group of feed system includes: an oxygen pipeline, one to three fine coal pipelines and an overheated steam pipe
Line；Second group of feed system driving step are as follows: (1) open fine coal and recycle stop valve, open second group of first stop valve of fine coal, make
Fine coal circulation is got up；
(2) when second group of condition of feeding intake meets, the bypass valve of second group of first stop valve of oxygen is opened, when second group of oxygen the
When pressure difference is lower than predetermined value before and after one stop valve, second group of first stop valve of oxygen of coal burner is opened, closes second group of coal burner
Second group of oxygen flow rate adjusting valve of coal burner is set to predetermined starting aperture, opens second group by the bypass valve of oxygen cutting valve
The second stop valve of fine coal and second group of fine coal third stop valve open second group of oxygen final cutting valve of coal burner, by the coal
Second group of oxygen flow rate adjusting valve of burner and second group of fine coal flow control valve start " oxygen/fine coal " rate control；
(3) all second group of fine coal are closed and recycles stop valve, opened second group of fine coal pipeloop blow down valve and purged, passed through
After the purging of predetermined time, second group of fine coal pipeloop blow down valve is closed；
(4) all second group of superheated steam stop valves are opened, second group of flow of superheated steam adjustable valve is set to starting aperture,
Start second group of oxygen flow rate adjusting valve of second group of flow of superheated steam adjustable valve and the coal burner " steam/oxygen gas " ratio
Example control.
2. the control method of powdered coal pressuring gasified reaction unit fine coal burner operation according to claim 1, feature exist
In: the other systems of gasification burner include: gasification furnace own system；Synthesis gas system；Burner nozzle cooling water system；Medium-pressure boiler water system
System；The water circulation system that gasifies and public engineer system.
3. the control method of powdered coal pressuring gasified reaction unit fine coal burner operation according to claim 2, feature exist
In: the process variable of two sets of feed systems of triggering secure parking protection simultaneously mainly has: gasification furnace hypertonia, synthesis gas temperature
Excessively high, coal burner cooling water total flow and each branch flow of coal burner cooling water are too low, burner cooling water liquid filling position is too low, drum
Liquid level is too high or too low, boiler cycle pump is worked normally less than two, to coil pipe boiler circulating water flow is too low, shock chamber
Liquid level is too low, Quench water flow is too low, scrubbing tower liquid level is too low, dreg-locking hopper circulating pump stops working, instrument air is too low, nitrogen
Or carbon dioxide manifold pressure is too low, fiery inspection dropout, stop button.
4. the control method of powdered coal pressuring gasified reaction unit fine coal burner operation according to claim 3, feature exist
In: wherein there is dangerous situation parking step in a set of feed system are as follows: (1) closes the coal burner oxygen of a set of feed system
The first stop valve, the bypass valve of coal burner the first stop valve of oxygen, coal burner oxygen flow rate adjusting valve, coal burner oxygen are last afterwards
Stop valve, the first stop valve of fine coal, the second stop valve of fine coal and fine coal third stop valve open coal burner oxygen pipeline blow down valve
With fine coal pipeline blow down valve；(2) all stop valves of superheated steam pipeline and flow stop valve are closed；(3) fine coal circulation is opened to cut
Disconnected valve, standard-sized sheet fine coal flow control valve, standard-sized sheet conveying high-pressure nitrogen flow regulating valve are closed fine coal and are followed after the predetermined time
Ring stop valve opens fine coal pipeloop blow down valve；(4) fine coal pipeloop purging after a certain period of time, closes fine coal circulation pipe
Line blow down valve and fine coal flow control valve close the main blow down valve of coal burner oxygen pipeline, in order to avoid combustible in gasification furnace
Into oxygen channel, cause oxygen pipeline detonation, the small flow blow down valve of coal burner oxygen pipeline and fine coal pipeline need to be kept to purge
Valve is in an open state.
5. the control method of powdered coal pressuring gasified reaction unit fine coal burner operation according to claim 3, feature exist
In: two sets of feed systems secure parking work simultaneously the step of: the coal burner oxygen for simultaneously closing off two feed systems all is cut
Disconnected valve and all stop valves of oxygen flow rate adjusting valve, fine coal, all stop valves of superheated steam pipeline and flow control valve, open coal
Burner oxygen pipeline blow down valve and fine coal pipeline blow down valve；It opens fine coal and recycles stop valve, standard-sized sheet fine coal flow control valve, standard-sized sheet
Conveying high-pressure nitrogen flow regulating valve closes fine coal and recycles stop valve after the predetermined time, opens fine coal pipeloop purging
Valve, fine coal pipeloop purge after a certain period of time, close fine coal pipeloop blow down valve and fine coal flow control valve, close coal and burn
Mouth oxygen pipeline blow down valve and fine coal pipeline blow down valve.
6. the control method of powdered coal pressuring gasified reaction unit fine coal burner operation according to claim 1, feature exist
It is run in startup burner and boosts to 1.0MPaG and 800 DEG C.
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| CN106635172A (en) * | 2015-11-04 | 2017-05-10 | 神华集团有限责任公司 | Jet assembly, multi-burner gasifier and feeding system thereof |
| CN106906004B (en) * | 2017-03-23 | 2022-08-02 | 山东明泉新材料科技有限公司 | Pulverized coal gasification control method and pulverized coal gasification device |
| CN107118805A (en) * | 2017-06-15 | 2017-09-01 | 航天长征化学工程股份有限公司 | Gasification system and method for pulverized coal-doped combustible |
| CN107937036B (en) * | 2017-11-30 | 2023-08-04 | 陕西延长石油（集团）有限责任公司 | System and method for controlling oxygen concentration in gasifying agent by circulating fluidized bed gasifier |
| CN107954218A (en) * | 2017-12-13 | 2018-04-24 | 航天长征化学工程股份有限公司 | Coal grinding and pulverized coal conveying system |
| CN108753362B (en) * | 2018-06-22 | 2023-08-01 | 鲁西化工集团股份有限公司 | Method and system for controlling start/stop of clean pulverized coal gasification device for treating wastewater |
| CN110760342B (en) * | 2018-07-25 | 2021-02-19 | 新能能源有限公司 | Boiler starting method of circulating fluidized bed boiler |
| CN108951367A (en) * | 2018-09-04 | 2018-12-07 | 中交公局海威工程建设有限公司 | A kind of method that asphalt mixing plant coal changes gas heating |
| CN110173626B (en) * | 2019-06-28 | 2024-02-13 | 恒力石化（大连）有限公司 | Slurry system intermodal transportation and mutual supply control system of PTA refining device |
| KR102488094B1 (en) * | 2020-05-12 | 2023-01-12 | 한국전력기술 주식회사 | Method, computer program and device for determining variable trip set values of plant protection system |
| CN112592740A (en) * | 2020-12-07 | 2021-04-02 | 新奥科技发展有限公司 | Control method of gasification furnace |
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| CN101050386B (en) * | 2007-02-14 | 2011-04-13 | 兖矿集团有限公司 | Method for online lowering of charge for gasification burner tip |
| CN102618331B (en) * | 2011-12-12 | 2014-12-24 | 航天长征化学工程股份有限公司 | Safety interlocking protection system used for powdered coal pressure gasification process and method |
| CN102618332B (en) * | 2011-12-23 | 2014-02-26 | 航天长征化学工程股份有限公司 | Starting/stopping control method and system for powdered coal pressure gasification device |
| CN104449867B (en) * | 2014-11-20 | 2016-08-24 | 水煤浆气化及煤化工国家工程研究中心 | A kind of powdered coal pressuring gasified furnace igniting burner control method |
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