CN107090314A - The cooling means and cooling system of gasification burner tip - Google Patents
The cooling means and cooling system of gasification burner tip Download PDFInfo
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- CN107090314A CN107090314A CN201710547483.0A CN201710547483A CN107090314A CN 107090314 A CN107090314 A CN 107090314A CN 201710547483 A CN201710547483 A CN 201710547483A CN 107090314 A CN107090314 A CN 107090314A
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- cooling
- burner
- gasification
- cooling water
- matrix
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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
-
- 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
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
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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
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
- C10J2300/0936—Coal fines for producing producer gas
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
Abstract
The present invention discloses the cooling means and cooling system of a kind of gasification burner tip.The cooling system includes：Gasification burner tip, chilled water tank, force (forcing) pump and heat exchanger；Gasification burner tip includes burner main body；Burner main body includes burner matrix and matrix shell, and matrix shell is coated on the outside of burner matrix, cooling duct is formed between burner matrix and matrix shell；Gasification burner tip also includes cooling water jecket, and cooling water jecket is coated on the outside of burner main body；Cooling water jecket is connected with chilled water tank, force (forcing) pump and heat exchanger successively, and the coolant outlet of heat exchanger is connected with cooling water jecket.The cooling means is as follows：With the cooling medium through cooling duct gasification reaction occurs for the gasification reaction raw material through burner matrix；The cooling medium is water-coal-slurry, carrier gas, vapor or fine coal.The cooling means and cooling system, it is possible to decrease burner cigarette burning intensity and cooling water system pressure drop, substantially prolongs burner service life.
Description
Technical field
The present invention relates to a kind of cooling means of gasification burner tip and cooling system.
Background technology
Entrained flow bed gasification technology is to realize one of key technology that Coal Clean Efficient Conversion is utilized.Airflow bed gasification furnace is adopted
Slag tap mode is used, form is or not foundation feed stock for blast furnace (water-coal-slurry/fine coal) and gasification furnace refractory liner (refractory brick/water-cooling wall)
Together, gasifier operation temperature is generally between 1250~1650 DEG C, and gasification operation pressure is usually 4.0MPag and 6.5MPag, gas
Changing burner as gasification furnace charging key equipment needs the long-period stable operation under this HTHP, it is necessary to take related cooling
Safeguard measure, it is main at present by setting burner nozzle cooling water system to realize that gasification burner tip protects the (patent No.
CN201110445598.1, CN201410440639.1, CN201620233225.6, CN201220271477.X).
Current air-flow bed coal-gasification uses the gasification burner tip of two kinds of forms.With GE Coal Gasification Technologies and multi-nozzle opposed gas
Change technology is the coal water slurry gasification burner of representative, and it sets the sides such as cooling water cavity, turnover cooling water coil in gasification burner tip end
Method realizes the cooling protection of gasification burner tip, and the mode also further combined with operating parameter is protected to gasification burner tip, such as
Adjust cooling water pressure and be less than gasification furnace pressure.Due to gasification burner tip cigarette burning intensity maximum, and cooling water cavity cell structure without
The accurate machining control of method, causes burner end regional area cooling effect poor；Supplied using coil pipe to burner end cooling water cavity
Water, burner cooling water pressure drop is big, and cooling water coil is easily pulled off by related when burner is overhauled and installed, and burner service life is led to
Often it is no more than 3 months.Coal gasification burner by representative of Shell bed pulverized coal gasification technologies, although using turnover cooling water jecket
Preferably solve that cooling water coil pressure drop is big and flimsy problem, but because burner cigarette burning intensity is big, end cooling
The risk of the easy ablation of water chamber is still larger.
The content of the invention
The technical problems to be solved by the invention be in order to overcome in the prior art gasification burner tip in long period HTHP
The short defect of easy scaling loss, service life down, and providing a kind of can extend the cooling means and cooling system of gasification burner tip.This hair
Bright cooling means and cooling system, are exchanged heat by reducing burner cigarette burning intensity and reinforcing cooling water, can significantly improved
The service life of gasification burner tip, can be achieved long period of the gasification burner tip under bad working environments and uses.
For up to above-mentioned purpose, the present invention is achieved through the following technical solutions：
The present invention provides a kind of cooling means of gasification burner tip, and the gasification burner tip includes burner main body；The burner master
Body includes burner matrix and matrix shell, and described matrix shell is coated on the outside of the burner matrix, the burner matrix and
Cooling duct is formed between described matrix shell；The gasification burner tip also includes cooling water jecket, the cooling water jecket cladding
In the outside of the burner main body；
The cooling means comprises the following steps：
With the cooling medium through the cooling duct gasification reaction occurs for the gasification reaction raw material through the burner matrix；Its
In：For the gasification reaction of water-coal-slurry, the cooling medium is water-coal-slurry, and the quality of the water-coal-slurry accounts for total water-coal-slurry
The percentage of quality is 5%~20%；For coal gasification reaction for, the cooling medium be carrier gas, vapor or fine coal,
The range of flow of the vapor is 1~10t/h, and the percentage that the fine coal accounts for total fine coal quality is 5%~20%.
The cooling means of the present invention is applied to the cooling means of the various gasification burner tips in this area, and the air flow bed that is particularly suitable for use in is used
The cooling means of gasification burner tip.
In the present invention, the fine coal routinely uses Geldart-D particle according to this area.
In the present invention, the cooling water in the cooling water jecket is conventional after voltage stabilizing, pressurization and heat exchange according to this area
Return in the cooling water jecket.
Wherein, before the voltage stabilizing, the cooling water is according to the conventional monitoring through excess temperature and flow in this area.The temperature
The monitoring of degree typically uses thermometer, and the monitoring of the flow typically uses flowmeter.
Wherein, the voltage stabilizing is this area routine operation, is carried out typically in chilled water tank.Cooled down in the chilled water tank
The regulation of the pressure of water is conventional according to this area, is typically adjusted according to the amount of inert gas therein is passed through.When cooling water
When pressure is less than setting value, inert gas is passed through, when the pressure of cooling water reaches setting value, stopping is passed through inert gas；When
When the pressure of cooling water is higher than setting value, inert gas is discharged, when the pressure of cooling water recovers to setting value, stops discharge lazy
Property gas.According to the operating procedure of gasification furnace, the pressure of cooling water can be adjusted in the range of 0~8.0MPag.By to cooling
The regulation of the pressure of water, synthesis gas obtained by gasification reaction leaks after cooling jacket can be prevented damaged.
Wherein, it is described to be pressurised into this area routine operation, typically realized by force (forcing) pump.
Wherein, before the heat exchange, the cooling water is conventional through inflow-rate of water turbine control according to this area.The flow control bag
The flow control valve and flowmeter set gradually along flow of cooling water direction is included, the flowmeter is according to this area routinely provided with control
Circuit processed, the control circuit is used to control the flow control valve.
Wherein, the heat exchange is this area routine operation, is carried out typically in heat exchanger.It is hot and scattered according to obtaining for cooling water
Enthusiasm condition, can be passed through the flow of cooling water or vapor in heat exchanger to meet process requirements by adjustment.According to gasification furnace
Operating procedure, the temperature of the cooling water can adjust in the range of 30~250 DEG C.Pass through the tune of the temperature to cooling water
Section, can prevent the dew point corrosion of the surface metal of burner main body.
Wherein, after the heat exchange, the cooling water is according to this area routinely by the monitoring of temperature and pressure.The temperature
The monitoring of degree typically uses thermometer, and the monitoring of the pressure typically uses pressure gauge.
The present invention also provides a kind of cooling system of gasification burner tip, and it includes：Gasification burner tip, chilled water tank, force (forcing) pump and
Heat exchanger；The gasification burner tip includes burner main body；The burner main body is included outside burner matrix and matrix shell, described matrix
Shell is coated on the outside of the burner matrix, and cooling duct is formed between the burner matrix and described matrix shell；The gas
Changing burner also includes cooling water jecket, and the cooling water jecket is coated on the outside of the burner main body；The cooling water jecket
Be connected successively with the chilled water tank, the force (forcing) pump and the heat exchanger, the coolant outlet of the heat exchanger with it is described
Cooling water jecket is connected.
In the present invention, the burner matrix can be any burner matrix commonly used in the art, for by water-coal-slurry
Or the gasification reaction raw material of fine coal sprays into gasification furnace and participates in gasification reaction.
In the present invention, diversion component preferably is provided with the cooling water jecket, the diversion component can be normal for this area
Advise the flow guide bar used.The setting of diversion component can make current uniform, and flow velocity is accelerated.
In the present invention, according to this area routinely provided with the on the pipeline between the cooling water jecket and the chilled water tank
One stop valve.When cooling water jecket is revealed, first stop valve can be closed, be easy to maintenance.
Wherein, routinely it is provided with first according to this area on the pipeline between the cooling water jecket and first stop valve
Check-valves.The setting of first check-valve, can avoid synthesis gas obtained by gasification reaction after cooling water jecket leakage from playing a reversed role into cooling
Water system, can be such that cooling water system more smoothly runs.
In the present invention, according to this area routinely provided with the on the pipeline between the cooling water jecket and the chilled water tank
One thermometer and first flowmeter.First thermometer and the first flowmeter preferably located at first stop valve with
On pipeline between the chilled water tank.By the setting of the first thermometer and first flowmeter, cooling water can be monitored in real time
Technological parameter, the generation of unusual service condition can be avoided.
In the present invention, the top of the chilled water tank be routinely typically provided according to this area first pressure table, blow-down pipe and
Inert gas input pipe, the blow-down pipe is provided with first pressure regulating valve, and the inert gas input pipe is provided with the second pressure
Force regulating valve.The pressure gauge is according to this area routinely provided with control circuit, and the control circuit is used to control first pressure
Force regulating valve and second pressure regulating valve.When the pressure of the cooling water in chilled water tank is less than setting value, start described second
Pressure-regulating valve, inert gas enters the chilled water tank through the second pressure regulating valve, is set when the pressure of cooling water reaches
During definite value, the second pressure regulating valve is closed；When the pressure of the cooling water in chilled water tank is higher than setting value, start described
First pressure regulating valve, inert gas discharges the chilled water tank through the first pressure regulating valve, when the pressure of cooling water is extensive
When again to setting value, the first pressure regulating valve is closed.According to the operating procedure of gasification furnace, the pressure of cooling water can 0~
Adjusted in the range of 8.0MPag, synthesis gas obtained by gasification reaction leaks after cooling jacket can be prevented damaged.
In the present invention, the chilled water tank is routinely provided with steam entry according to this area.It is first before gasification burner tip operation
A certain amount of desalted water is first injected into chilled water tank, can be according to the setting value of the temperature of cooling water, to adjust the logical of water vapour
Enter amount.In gasification burner tip running, hot and heat dispersal situations are obtained according to cooling water system, may be selected to be passed through cold in heat exchanger
But the flow of water or vapor come maintain cooling water temperature it is constant.According to the operating procedure of gasification furnace, the cooling water
Temperature can be adjusted in the range of 30~250 DEG C, the dew point corrosion of the surface metal of burner main body can be prevented.
In the present invention, flow is routinely sequentially provided with according to this area on the pipeline between the force (forcing) pump and the heat exchanger
Regulating valve and second flowmeter, the second flowmeter is according to this area routinely provided with control circuit, and the control circuit is used for
Control the flow control valve.According to the operating procedure of gasification furnace, the regulation to the flow of cooling water can be achieved, and then can be very
The good removal for realizing reaction heat, plays protection gasification burner tip, extends the purpose of gasification burner tip service life.
In the present invention, the pipeline between the heat exchanger and the cooling water jecket is provided with the second stop valve.Work as cooling
When water leg is revealed, second stop valve can be closed, be easy to maintenance.
Wherein, the pipeline between second stop valve and the cooling water jecket is provided with second check-valve.Second stops
The setting of valve is returned, synthesis gas obtained by gasification reaction after cooling water jecket leakage can be avoided to play a reversed role into cooling water system, can be made
Cooling water system is more smoothly run.
In the present invention, routinely it is sequentially provided with according to this area on the pipeline between the heat exchanger and the cooling water jecket
Second pressure table and second temperature meter.The second pressure table and the second temperature meter are preferably located at the heat exchanger and institute
State on the pipeline between the second stop valve.By the setting of second pressure table and second temperature meter, cooling water can be monitored in real time
Technological parameter, the generation of unusual service condition can be avoided.
In the present invention, " MPa " is pressure unit " MPa " in " MPag ", and " g " represents gauge pressure.
On the basis of common sense in the field is met, above-mentioned each optimum condition can be combined, and produce each preferable reality of the present invention
Example.
Agents useful for same and raw material of the present invention are commercially available.
The positive effect of the present invention is：The cooling means and cooling system of gasification burner tip of the present invention, by setting
Coolant guiding channel, it is possible to decrease burner cigarette burning intensity；Using cooling water jecket, it is possible to decrease cooling water system pressure drop, and then
Reduce conveying energy consumption；In addition, the installation and repairing of cooling water jecket is simple and convenient；By the pressure and temperature that adjust cooling water system
Degree, is suitable for demand of the Coal rank to vapor pressure and cooling water temperature.The cooling means and cooling system, substantially prolongs
The service life of gasification burner tip, the powerful guarantee safe and stable operation of gasification installation.
Brief description of the drawings
Fig. 1 is the schematic diagram of the cooling system of gasification burner tip of the present invention.
Fig. 2 is the schematic diagram of the cooling means of gasification burner tip of the present invention.
Drawing reference numeral explanation：
The cooling water jecket 12 of 10 cooling duct of gasification burner tip 11
The first flowmeter 40 of first 20 first thermometer of stop valve 30
The second pressure regulating valve 53 of 50 first pressure table of chilled water tank, 51 first pressure regulating valve 52
The heat exchanger 90 of 60 flow control valve of force (forcing) pump, 70 second flowmeter 80
The stop valve 120 of 100 second temperature meter of second pressure table 110 second
Embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.The experimental method of unreceipted actual conditions in the following example, conventionally and condition, or according to business
Product specification is selected.
As shown in figure 1, the gasification burner tip 10 of the cooling system of the present invention includes burner main body；Burner main body includes burner base
Body and matrix shell, matrix shell are coated on the outside of burner matrix, and cooling duct is formed between burner matrix and matrix shell
11；Gasification burner tip 10 also includes cooling water jecket 12, and cooling water jecket 12 is coated on the outside of burner main body；Cooling water jecket 12
It is connected successively with chilled water tank 50, force (forcing) pump 60 and heat exchanger 90, coolant outlet and the cooling water jecket 12 of heat exchanger 90
It is connected.The first stop valve 20, the first thermometer 30 are set gradually on pipeline between cooling water jecket 12 and chilled water tank 50
With first flowmeter 40.Chilled water tank 50 is additionally provided with first pressure table 51, blow-down pipe and inert gas input pipe, blow-down pipe and set
There is first pressure regulating valve 52, inert gas input pipe is provided with second pressure regulating valve 53, the control electricity of first pressure table 51
Road is used to control first pressure regulating valve 52 and second pressure regulating valve 53.Chilled water tank 50 is additionally provided with steam entry, and water steams
Gas entrance is connected with chilled water tank 50.Be sequentially provided with pipeline between force (forcing) pump 60 and heat exchanger 90 flow control valve 70 and
Second flowmeter 80, the control circuit of second flowmeter 80 is used to control flow control valve 70.Heat exchanger 90 and cooling water jecket
Second pressure table 100, the stop valve 120 of second temperature meter 110 and second are sequentially provided with pipeline between 12.
Embodiment 1
As shown in Fig. 2 a set of day treatment scale is the coal water slurry gasifying device of 2000 tons of coals, gasifier operation temperature 1300
DEG C, pressure 4.0MPag, gasification furnace is provided with 4 gasification burner tips 10.The flow of water-coal-slurry and oxygen through burner matrix is respectively
32.9t/h and 14100Nm3/ h, water coal slurry concentration 60wt%.The flow of water-coal-slurry through cooling duct 11 is 3t/h, water-coal-slurry
Concentration 60wt%.The pressure of chilled water tank 50 is normal pressure, the flow 12m of cooling water3/ h, passes in and out the coolant water temperature of gasification burner tip 10
Degree is respectively 33 DEG C and 36 DEG C, and the pressure drop for passing in and out the cooling water of gasification burner tip 10 is about 0.2MPa.
The cooling system, using water-coal-slurry material in cooling duct 11, reduces the end gasification, and combustion of gasification burner tip 10
Intensity, the coil pipe of traditional coal-water-slurry gasification burner tip 10 is replaced using cooling water jecket 12, burner cooling water pressure drop is reduced, and is reduced
Cooling system energy consumption, realizes the good cooling protection of gasification burner tip 10.The existing coal-water-slurry gasification nozzle life-span is generally 2~
3 months, the service life of the coal water slurry gasification burner 10 was more than 3 months.
Embodiment 2
As shown in Fig. 2 a set of day treatment scale is the fine coal pressurized entrained-bed gasified industry device of 1000 tons of coals, gasification furnace
1500 DEG C of operation temperature, pressure 4.0MPag, gasification furnace sets 1 coal gasification burner 10.Fine coal and oxygen through burner matrix
Flow be respectively 41.5t/h and 24000Nm3/h.The flow of vapor through cooling duct 11 is 4t/h.Chilled water tank 50
Pressure is that 5.0MPag is higher than gasifier operation pressure, cooling water flow 20m3/ h, the cooling water temperature point of turnover gasification burner tip 10
Wei not be 180 DEG C and 183 DEG C, the pressure drop for passing in and out the cooling water of gasification burner tip 10 is about 0.2MPa.
The cooling system, by the use of the process steam and cooling water required for coal gasification as cooling medium, is ensureing gas
On the premise of changing efficiency, the cigarette burning intensity of gasification burner tip 10 is reduced, burner cooling is reduced using cooling water jecket 12
Hydraulic pressure drops, and reduces cooling system energy consumption, realizes the good cooling protection of gasification burner tip 10.Existing coal gasification nozzle life
Generally 3~9 months, the service life of the coal gasification burner 10 was up to more than 1 year.
Claims (10)
1. a kind of cooling means of gasification burner tip, the gasification burner tip includes burner main body, the burner main body includes burner base
Body and matrix shell, described matrix shell are coated on the outside of the burner matrix, it is characterised in that the burner matrix and institute
State and cooling duct is formed between matrix shell, the gasification burner tip also includes cooling water jecket, the cooling water jecket is coated on
The outside of the burner main body；
The cooling means comprises the following steps：
With the cooling medium through the cooling duct gasification reaction occurs for the gasification reaction raw material through the burner matrix；Wherein：
For the gasification reaction of water-coal-slurry, the cooling medium is water-coal-slurry, and the quality of the water-coal-slurry accounts for the matter of total water-coal-slurry
The percentage of amount is 5%~20%；For coal gasification reaction, the cooling medium is carrier gas, water vapour or fine coal, institute
The range of flow for stating water vapour is 1~10t/h, and the percentage that the fine coal accounts for total fine coal quality is 5%~20%.
2. cooling means as claimed in claim 1, it is characterised in that cooling water in the cooling water jecket by voltage stabilizing,
Returned after pressurization and heat exchange in the cooling water jecket.
3. cooling means as claimed in claim 2, it is characterised in that the pressure of the cooling water is 0~8.0MPag.
4. cooling means as claimed in claim 2, it is characterised in that the temperature of the cooling water is 30~250 DEG C.
5. a kind of cooling system of gasification burner tip, it is characterised in that it includes：Gasification burner tip, chilled water tank, force (forcing) pump and heat exchange
Device；The gasification burner tip includes burner main body；The burner main body includes burner matrix and matrix shell, described matrix shell bag
The outside of the burner matrix is overlying on, cooling duct is formed between the burner matrix and described matrix shell；The gasification is burnt
Mouth also includes cooling water jecket, and the cooling water jecket is coated on the outside of the burner main body；The cooling water jecket is successively
It is connected with the chilled water tank, the force (forcing) pump, the heat exchanger, the coolant outlet of the heat exchanger and the cooling water
Chuck is connected.
6. cooling system as claimed in claim 5, it is characterised in that diversion component is provided with the cooling water jecket, described
Diversion component is flow guide bar.
7. cooling system as claimed in claim 5, it is characterised in that between the cooling water jecket and the chilled water tank
First check-valve, the first stop valve, the first thermometer and first flowmeter are sequentially provided with pipeline.
8. cooling system as claimed in claim 5, it is characterised in that the top of the chilled water tank provided with first pressure table,
Blow-down pipe and inert gas input pipe, the blow-down pipe are provided with first pressure regulating valve, the inert gas input pipe and set
There is second pressure regulating valve；The chilled water tank is provided with steam entry.
9. cooling system as claimed in claim 5, it is characterised in that on the pipeline between the force (forcing) pump and the heat exchanger
Flow control valve and second flowmeter are sequentially provided with, the second flowmeter is provided with control circuit, and the control circuit is used to control
Make the flow control valve.
10. cooling system as claimed in claim 5, it is characterised in that between the heat exchanger and the cooling water jecket
Second pressure table, second temperature meter, the second stop valve and second check-valve are sequentially provided with pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547483.0A CN107090314B (en) | 2017-07-06 | 2017-07-06 | Cooling method and cooling system of gasification burner |
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|---|---|---|---|
| CN201710547483.0A CN107090314B (en) | 2017-07-06 | 2017-07-06 | Cooling method and cooling system of gasification burner |
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| CN107090314A true CN107090314A (en) | 2017-08-25 |
| CN107090314B CN107090314B (en) | 2023-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442979A (en) * | 2018-12-12 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of high temperature vertical kiln burner nozzle cooling water system and its working method |
| CN112303642A (en) * | 2019-08-02 | 2021-02-02 | 中国石油化工股份有限公司 | Cooling device for incineration nozzles and cooling method for incineration nozzles and use thereof |
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