CN110295062A - A kind of part seam jumps the control method of gasification installation stable operation after vehicle - Google Patents
A kind of part seam jumps the control method of gasification installation stable operation after vehicle Download PDFInfo
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- CN110295062A CN110295062A CN201810245036.4A CN201810245036A CN110295062A CN 110295062 A CN110295062 A CN 110295062A CN 201810245036 A CN201810245036 A CN 201810245036A CN 110295062 A CN110295062 A CN 110295062A
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- coal dust
- pipeline
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Air Transport Of Granular Materials (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses the control methods that a kind of part seam jumps gasification installation stable operation after vehicle, and gasification installation includes feedstock vessel, gravimetric tank, gasification burner tip, oxygen supply device, blow device and gasification furnace；After part coal dust pipeline jumps vehicle, the present invention is based on the pipeline configurations for entering fine coal conveying, keep mass flow to stablize by matching between coal dust pipeline, realize the stability contorting of gasification installation.Gasification installation fluctuation problem caused by the present invention is preferably solved after being caused part seam to jump vehicle due to coal dust pipeline failure, provides guarantee for the safe long-period stable operation of gasification installation.
Description
Technical field
The present invention relates to the control methods that a kind of part seam jumps gasification installation stable operation after vehicle, and it is steady to belong to gasification installation
Surely control field is run.
Background technique
Coal gasification is one of the main path that Coal Clean Efficient Conversion utilizes, wherein fine coal air flow bed pressurized gasification technology
It is the mainstream development direction of Coal Gasification Technology due to the features such as Suitability of Coals is strong and gasification index is advanced.Currently, in order to realize
Extensive gasification requires, generally using more coal dust pipeline settings, since coal dust pneumatic conveying is vulnerable to impurity in coal dust and valve
The factors influence such as door failure, which causes seam to jump vehicle, will cause gasification installation pressure substantially if adjusting control program not in time
Fluctuation, influences rear system steady production, furthermore gasifier water-cooling wall and gasification burner tip may also be big with mass flows such as coal dusts
Amplitude variation and the risk for facing ablation, the final safe long-period stable operation for influencing gasification installation.
For gasifying powder coal device part seam jump vehicle after security control have correlation technique, such as application No. is:
200910018249.4,201110412818.0,201410487968.1 and 201510395039.2 patent application, but be directed to
The method that gasification installation maintains stable operation control after part seam jump vehicle has not been reported, it is necessary to invent a kind of part seam
The control method of gasification installation stable operation, realizes the safe long-period stable operation of fine coal gas-flow bed gasifying apparatus after jump vehicle.
Summary of the invention
The present invention provides the control method that a kind of part seam jumps gasification installation stable operation after vehicle, solves due to part
Gasification system fluctuation problem caused by after seam jump vehicle, effectively avoids gasification installation pressure fluctuation, reduces water cooling wall liner
In and gasification burner tip ablation risk.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
A kind of part seam jumps the control method of gasification installation stable operation after vehicle, and gasification installation includes feedstock vessel, weighing
Tank, gasification burner tip, oxygen supply device, blow device and gasification furnace；
Wherein, the coal dust in feedstock vessel enters gasification burner tip by two or more coal dust pipelines, and gasification burner tip is mounted on
On gasification furnace, the pressure of gasification furnace is controlled by the pressure-regulating valve of gasification outlet of still；
Pulverized coal flow regulating valve and coal dust stop valve are respectively equipped on every coal dust pipeline, wherein pulverized coal flow is adjusted
The direction of valve to powder stop valve is consistent with the direction of feedstock vessel to gasification burner tip；
Oxygen supply device leads to gasification burner tip by two or more oxygen therapy pipelines, cures by oxygen therapy the quantity and coal pipe of pipeline
The quantity of line is equal and corresponds, and is equipped with oxygen cutting valve on every oxygen therapy pipeline；
Blow device branches out two or more scavenging pipelines, the quantity of scavenging pipeline is equal with the quantity of coal dust pipeline,
And correspond, the coal dust pipeline of every scavenging pipeline corresponding thereto is connected, and purging is equipped on every scavenging pipeline
Gas stop valve；
Gravimetric tank branches out two or more pipeloops, the quantity of pipeloop it is equal with the quantity of coal dust pipeline and
It corresponds, the coal dust pipeline of every pipeloop corresponding thereto is connected, and is equipped with circulation pipe on every pipeloop
Line stop valve；
After part coal dust pipeline jumps vehicle, the control method of gasification installation stable operation is as follows:
1) gasification furnace pressure-regulating valve is changed to manually control, reduces valve opening；
2) the pulverized coal flow regulating valve and coal dust stop valve jumped on vehicle coal dust pipeline are closed, open and jumps vehicle coal dust pipeline pair
Purge gass stop valve on the scavenging pipeline answered carries out coal dust pipeline purging, simultaneously closes off oxygen therapy corresponding with vehicle coal dust pipeline is jumped
Oxygen cutting valve on pipeline；
3) pulverized coal flow regulating valve and the oxygen flow rate adjusting valve still run on coal dust pipeline is adjusted, coal dust and oxygen are improved
Load, maintain certain load operation；
4) after vehicle coal dust pipeline troubleshooting to be jumped, the flow control valve and pipeloop of the road coal dust pipeline are opened
The coal dust of feedstock vessel is sent into gravimetric tank by stop valve, adjusts pulverized coal flow to the setting value that feeds intake, when coal dust circular flow is stablized
Afterwards, coal dust stop valve is opened, pipeloop stop valve is closed, coal dust is sent into gasification burner tip, corresponding oxygen is then opened and cuts
Disconnected valve, and close corresponding purge gass stop valve adjusts coal dust and oxygen flow to setting value, while pressure-regulating valve aperture tune
It is whole to setting value, system parameter restores horizontal to Chinese herbaceous peony is jumped.
It can be reduced through the above way since part coal dust pipeline jumps the fluctuation of gasification installation caused by vehicle.
It when seam jumps vehicle suddenly when part, jumps vehicle coal dust pipeline and purges immediately, while cutting off its corresponding oxygen, furthermore will
Gasification system pressure-regulating valve is changed to manually control, systems stabilisation pressure；The load for not jumping vehicle operation seam is promoted, is promoted simultaneously
It corresponds to oxygen flow.
Coal dust circulation should be established by jumping before vehicle seam is restored, put into gasification furnace, while investment pair again after pulverized coal flow is stablized
Answer oxygen；The coal dust and oxygen flow for running seam gradually decrease；Pass through gasification system pressure-regulating valve systems stabilisation pressure；It will
Gasification installation restores to the setting value for jumping Chinese herbaceous peony.
In order to further increase the stability of operation, 0.5~5.0MPag of operating pressure in Chinese herbaceous peony gasification furnace is jumped.
Range of pressure fluctuations is 0.1~0.3MPag in gasification furnace after the controllable jump Chinese herbaceous peony of the application.
In order to improve the safety and economy of purging, the purge gass in blow device are nitrogen or carbon dioxide.
Safety system and cost in order to balance, it is preferable that coal dust pipeline has 2~10, and further preferably, coal dust pipeline has 2~6
Item.
The present invention is to keep mass flow steady by matching between coal dust pipeline based on the pipeline configuration for entering fine coal conveying
It is fixed, realize the stability contorting of gasification installation, this method can solve to cause after causing part seam to jump vehicle due to coal dust pipeline failure
Gasification installation fluctuation problem, provide guarantee for the safe long-period stable operation of gasification installation.
The unmentioned technology of the present invention is referring to the prior art.
Part seam of the present invention jumps the control method of gasification installation stable operation after vehicle, can solve due to coal dust pipeline failure
Cause part seam to jump caused gasification installation fluctuation problem after vehicle, is provided for the safe long-period stable operation of gasification installation
It ensures, has the characteristics that easy to operate, anti-system fluctuation is good.
Detailed description of the invention
Fig. 1 is gasification installation structural schematic diagram of the present invention；
In figure, 1 feedstock vessel, 2 gravimetric tanks, 3 gasification burner tips, 4 gasification furnaces, 5 pulverized coal flow regulating valves, 6 coal dust stop valves, 7
Pipeloop stop valve, 8 oxygen cutting valves, 9 purge gass stop valves, 10 pressure-regulating valves, 11 blow devices, 12 oxygen；
Specific embodiment
For a better understanding of the present invention, below with reference to the embodiment content that the present invention is furture elucidated, but it is of the invention
Content is not limited solely to the following examples.
As shown in Figure 1, gasification installation include feedstock vessel, gravimetric tank, gasification burner tip, oxygen supply device, blow device and
Gasification furnace；
Wherein, the coal dust in feedstock vessel enters gasification burner tip by two or more coal dust pipelines, and gasification burner tip is mounted on
On gasification furnace, the pressure of gasification furnace is controlled by the pressure-regulating valve of gasification outlet of still；
Pulverized coal flow regulating valve and coal dust stop valve are respectively equipped on every coal dust pipeline, wherein pulverized coal flow is adjusted
The direction of valve to powder stop valve is consistent with the direction of feedstock vessel to gasification burner tip；
Oxygen supply device leads to gasification burner tip by two or more oxygen therapy pipelines, cures by oxygen therapy the quantity and coal pipe of pipeline
The quantity of line is equal and corresponds, and is equipped with oxygen cutting valve on every oxygen therapy pipeline；
Blow device branches out two or more scavenging pipelines, the quantity of scavenging pipeline is equal with the quantity of coal dust pipeline,
And correspond, the coal dust pipeline of every scavenging pipeline corresponding thereto is connected, and purging is equipped on every scavenging pipeline
Gas stop valve；
Gravimetric tank branches out two or more pipeloops, the quantity of pipeloop it is equal with the quantity of coal dust pipeline and
It corresponds, the coal dust pipeline of every pipeloop corresponding thereto is connected, and is equipped with circulation pipe on every pipeloop
Line stop valve；
After part coal dust pipeline jumps vehicle, the control method of gasification installation stable operation is as follows:
1) pressure-regulating valve is changed to manually control, reduces valve opening；
2) the pulverized coal flow regulating valve and coal dust stop valve jumped on vehicle coal dust pipeline are closed, open and jumps vehicle coal dust pipeline pair
Purge gass stop valve on the scavenging pipeline answered carries out coal dust pipeline purging, simultaneously closes off oxygen therapy corresponding with vehicle coal dust pipeline is jumped
Oxygen cutting valve on pipeline；
3) pulverized coal flow regulating valve and the oxygen flow rate adjusting valve still run on coal dust pipeline is adjusted, coal dust and oxygen are improved
Load, maintain certain load operation；
4) after vehicle coal dust pipeline troubleshooting to be jumped, the flow control valve and pipeloop of the road coal dust pipeline are opened
The coal dust of feedstock vessel is sent into gravimetric tank by stop valve, adjusts pulverized coal flow to the setting value that feeds intake, when coal dust circular flow is stablized
Afterwards, coal dust stop valve is opened, pipeloop stop valve is closed, coal dust is sent into gasification burner tip, corresponding oxygen is then opened and cuts
Disconnected valve, and close corresponding purge gass stop valve adjusts coal dust and oxygen flow to setting value, while pressure-regulating valve aperture tune
It is whole to setting value, system parameter restores horizontal to Chinese herbaceous peony is jumped.
Embodiment 1
1000 tons of coal gasification apparatus of day processing, coal dust pipeline have 2, and vapor pressure 4.0MPag is fed, gas using fine coal
Change furnace roof portion and one gasification burner tip is set, two coal dust pipelines and corresponding two oxygen pipelines are set, when the single coal dust of generation
Gasification installation is stable controllable when pipeline jumps vehicle, and key step is as follows:
(1) system pressure regulating valve is switched to and is manually controlled, valve opening 20%, gasification system pressure reduction to~
3.8MPag；
(2) it jumps vehicle seam and correspond to oxygen cutting, jump vehicle seam nitrogen (or CO2) purging；
(3) coal dust and oxygen load for promoting operation seam, protect gasifier nozzle；
(4) it after the completion of jumping the troubleshooting of vehicle seam, based on feedstock vessel, gravimetric tank and the configuration of coal dust pipeloop, establishes and jumps
The coal dust of vehicle seam recycles, and design parameter includes: pulverized coal flow 8t/h, conveying speed > 5m/s, density 200kg/m3, corresponding oxygen
Throughput 5000Nm3Coal dust and oxygen after stabilization to be recycled, are put into gasification furnace, coal dust and oxygen flow gradually rise, separately by/h
A piece corresponding coal dust of operation seam and oxygen flow gradually decrease, and the mass flow of vaporized furnace is finally reached setting value,
That is coal dust 41t/h, oxygen 25000Nm3/h；Gasify battery limit (BL) pressure-regulating valve aperture setting value 25% out, by gasification system pressure
It is stable that range of pressure fluctuations is 0.1~0.2MPag in gasification furnace after 4.0MPag, jump Chinese herbaceous peony.
Claims (6)
1. the control method that a kind of part seam jumps gasification installation stable operation after vehicle, it is characterised in that: gasification installation includes giving
Batch can, gravimetric tank, gasification burner tip, oxygen supply device, blow device and gasification furnace；
Wherein, the coal dust in feedstock vessel enters gasification burner tip by two or more coal dust pipelines, and gasification burner tip is mounted on gasification
On furnace, the pressure of gasification furnace is controlled by the pressure-regulating valve of gasification outlet of still；
Pulverized coal flow regulating valve and coal dust stop valve are respectively equipped on every coal dust pipeline, wherein pulverized coal flow regulating valve arrives
The direction of coal dust stop valve is consistent with the direction of feedstock vessel to gasification burner tip；
Oxygen supply device leads to gasification burner tip by two or more oxygen therapy pipelines, cures by oxygen therapy the quantity and coal dust pipeline of pipeline
Quantity is equal and corresponds, and is equipped with oxygen cutting valve on every oxygen therapy pipeline；
Blow device branches out two or more scavenging pipelines, and the quantity of scavenging pipeline is equal with the quantity of coal dust pipeline and one
One is corresponding, and the coal dust pipeline of every scavenging pipeline corresponding thereto is connected, and purging autogenous cutting is equipped on every scavenging pipeline
Disconnected valve；
Gravimetric tank branches out two or more pipeloops, and the quantity of pipeloop is equal with the quantity of coal dust pipeline and one by one
Corresponding, the coal dust pipeline of every pipeloop corresponding thereto is connected, is equipped with pipeloop on every pipeloop and cuts
Disconnected valve；
After part coal dust pipeline jumps vehicle, the control method of gasification installation stable operation is as follows:
1) pressure-regulating valve on gasification furnace is changed to manually control, reduces valve opening；
2) the pulverized coal flow regulating valve and coal dust stop valve jumped on vehicle coal dust pipeline are closed, is opened corresponding with vehicle coal dust pipeline is jumped
Purge gass stop valve on scavenging pipeline carries out coal dust pipeline purging, simultaneously closes off oxygen therapy pipeline corresponding with vehicle coal dust pipeline is jumped
On oxygen cutting valve；
3) it adjusts and still runs pulverized coal flow regulating valve and oxygen flow rate adjusting valve on coal dust pipeline, improve the negative of coal dust and oxygen
Lotus maintains certain load operation；
4) after vehicle coal dust pipeline troubleshooting to be jumped, flow control valve and the pipeloop cutting of the road coal dust pipeline are opened
The coal dust of feedstock vessel is sent into gravimetric tank by valve, is adjusted pulverized coal flow and is beaten after coal dust circular flow is stablized to the setting value that feeds intake
Coal dust stop valve is opened, pipeloop stop valve is closed, coal dust is sent into gasification burner tip, then opens corresponding oxygen cutting valve,
And close corresponding purge gass stop valve, adjust coal dust and oxygen flow to setting value, at the same pressure-regulating valve aperture adjust to
Setting value, system parameter restore horizontal to Chinese herbaceous peony is jumped.
2. the control method that part seam as described in claim 1 jumps gasification installation stable operation after vehicle, it is characterised in that: jump
0.5~5.0MPag of operating pressure in Chinese herbaceous peony gasification furnace.
3. part seam as claimed in claim 1 or 2 jumps the control method of gasification installation stable operation after vehicle, feature exists
In: range of pressure fluctuations is 0.1~0.3MPag in gasification furnace after control jump Chinese herbaceous peony.
4. part seam as claimed in claim 1 or 2 jumps the control method of gasification installation stable operation after vehicle, feature exists
In: the purge gass in blow device are nitrogen or carbon dioxide.
5. part seam as claimed in claim 1 or 2 jumps the control method of gasification installation stable operation after vehicle, feature exists
In: coal dust pipeline has 2~10.
6. part seam as claimed in claim 1 or 2 jumps the control method of gasification installation stable operation after vehicle, feature exists
In: coal dust pipeline has 2~6.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112592740A (en) * | 2020-12-07 | 2021-04-02 | 新奥科技发展有限公司 | Control method of gasification furnace |
| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
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