CN109694751A - A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength - Google Patents
A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength Download PDFInfo
- Publication number
- CN109694751A CN109694751A CN201710982153.4A CN201710982153A CN109694751A CN 109694751 A CN109694751 A CN 109694751A CN 201710982153 A CN201710982153 A CN 201710982153A CN 109694751 A CN109694751 A CN 109694751A
- Authority
- CN
- China
- Prior art keywords
- high temperature
- temperature nozzle
- air blowing
- gas
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005260 corrosion Methods 0.000 title claims abstract description 9
- 230000007797 corrosion Effects 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 69
- 238000007664 blowing Methods 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001301 oxygen Substances 0.000 claims abstract description 20
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 20
- 238000002309 gasification Methods 0.000 claims abstract description 16
- 239000003245 coal Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 239000004593 Epoxy Substances 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 claims description 12
- 229960004424 carbon dioxide Drugs 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 239000003250 coal slurry Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 2
- 238000005530 etching Methods 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 description 11
- 229910001220 stainless steel Inorganic materials 0.000 description 11
- 239000007921 spray Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910001055 inconels 600 Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to high-temperature coal gasification technical fields, and in particular to a kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength.It is provided on the spout outer ring surface of the high temperature nozzle air blowing component (10), there are several holes on the air blowing component (10).The described method includes: the spout of high temperature nozzle injection caburation raw material and oxygen into gasification furnace, and the continuous blow gas in hole by being arranged on the air blowing component on spout outer ring surface (10) through the invention.The etching problem that high-temperature process can be relieved high temperature nozzle is carried out using high temperature nozzle of the present invention, extends the service life of high temperature nozzle.
Description
Technical field
The present invention relates to high-temperature coal gasification technical fields, and in particular to a kind of high temperature nozzle and to reduce high temperature nozzle corrosion strong
The method of degree.
Background technique
The operation temperature of high-temperature slag coal gasifier is very high, and up to 2000 DEG C or so, fire box temperature exists flame kernel temperature
Between 1200~1500 DEG C.Meanwhile burner hearth composition of gases within is complicated, oxidizing gases, reducibility gas and sour gas.
The sub-fraction of nozzle, especially spout outer ring surface (referred to as " face ") are exposed under such environment, are subjected to high temperature and corruption
The test of corrosion gas.Certainly, for coal water slurry gasification, the abrasion of nozzle influences very prominent, continuous operation 100 days or so
Just necessary blowing out carries out restorative maintenance to nozzle.At the same time, it is found in practice, the nozzle removed occurs face quickly and splits
Line, it is also desirable to overhaul, holding time, increase expense.Generally, face is stainless steel material, has cooling water to take in inside circulation
Heat drop temperature.
CN105505473A discloses a kind of coal gasifying process nozzle equipped with protecting cover, and protecting cover includes protecting cover ontology and ontology
The earflap in outside, there are the circular holes more slightly larger than nozzle vent at protecting cover center, and protecting cover is connect and consolidated with nozzle using metal screw rod
Determine protecting cover.Protecting cover can effectively prevent technique spray nozzle front end face in the invention, i.e., so-called " face " cracking, ablation or burn-through can
Extend the cycle of operation of entire technique nozzle.The preferred heat-resisting material of the material of the protecting cover, such as aluminum oxide, the gold of chromium -90
Belong to oxide.
CN105368501A discloses a kind of protection mechanism of process burner suitable for air-flow bed coal-gasification furnace, the guarantor
Shield mechanism is the face setting bitch in nozzle, the refractory material of tamping is then poured, to protect face.Refractory material is selected from
Silicon carbide or the iron-based solid solution strengthened alloy of nickel-chromium-, such as INCONEL600.
However, method disclosed in above-mentioned patent application has limitation, when protecting cover is such as set, nozzle body and protecting cover with
Inevitably there are gaps, therefore not can avoid etching problem；When face laying refractory material, due to refractory material and nozzle body gold
The coefficient of expansion of category is different, has fallen off at high temperature, furthermore, nozzle is in high speed spraying of material with certain vibration, institute
It not can avoid with the problem of falling off.
Summary of the invention
The purpose of the invention is to overcome above-mentioned technical problem of the existing technology, a kind of high temperature nozzle and drop are provided
The method of low high temperature nozzle corrosion strength, can be relieved the etching problem of high temperature nozzle according to the method described in the present invention,
Extend the service life of high temperature nozzle.
The present invention provides a kind of high temperature nozzle, it is provided with air blowing component on the spout outer ring surface of the high temperature nozzle, it is described
There are several holes in air blowing component.
The present invention also provides a kind of methods for reducing high temperature nozzle corrosion strength, this method comprises: institute through the invention
The spout for the high temperature nozzle stated injection caburation raw material and oxygen into gasification furnace, and by the way that blowing on spout outer ring surface is arranged in
The continuous blow gas in hole on gas component.
In high temperature nozzle of the present invention, opened up in the air blowing component on spout outer ring surface (i.e. spray nozzle front end face)
Hole can continuous blow gas so that the gas continuously blown out is existed to change the high-temperature gas flow field near spout outer ring surface 7
Protection gas field is formed on spout outer ring surface 7, is reduced influence of the high temperature gas flow to nozzle, is alleviated the etching problem of high temperature nozzle, prolong
The service life of long nozzle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of high temperature nozzle of the present invention；
Fig. 2 is the schematic diagram in the neighbouring flow field of high temperature nozzle during the work time；
Fig. 3 is the partial structural diagram of the nozzle of high temperature nozzle of the present invention.
Description of symbols
1 central oxygen channel, 2 gasified raw material feed path
3 outer 4 cooling water inlets of epoxy channel
5 cooling water outlet, 7 spout outer ring surface
8 cooling-part, 10 air blowing component
11 high temperature gas flow flow field, 12 ejecta
The air supply channel of 13 air blowing components
Specific embodiment
The endpoint of disclosed range and any value are not limited to the accurate range or value herein, these ranges or
Value should be understood as comprising the value close to these ranges or value.For numberical range, between the endpoint value of each range, respectively
It can be combined with each other between the endpoint value of a range and individual point value, and individually between point value and obtain one or more
New numberical range, these numberical ranges should be considered as specific open herein.
As shown in Figure 1, being provided on the spout outer ring surface 7 of the high temperature nozzle in high temperature nozzle of the present invention
Air blowing component 10 has several holes in the air blowing component 10.Fig. 2 shows high temperature nozzle nozzles during the work time
The schematic diagram in neighbouring flow field.In the high temperature nozzle course of work, gasification materiel is sprayed from spout, is formed and is sprayed logistics 12, the spray
12 temperature of effluent stream is not high, but forms torch immediately after spraying, and flame temperature can reach 2000 DEG C or more, the high temperature gas flow of formation
There is small part to enter flow field 11, if not changing flow field 11, nozzle can be constituted and be seriously affected.According to height of the present invention
Warm nozzle, by the hole in the air blowing component 10 can continuous blow gas, to change the high temperature near spout outer ring surface 7
Gas flowfield makes the gas continuously blown out form protection gas field on spout outer ring surface 7, reduces high temperature gas flow to the shadow of nozzle
It rings.
In high temperature nozzle of the present invention, the hole in the air blowing component 10 can be 1-1000.Specifically, hole
Quantity it is related to aperture.When aperture is larger, the negligible amounts in hole；When aperture is smaller, the quantity in hole is more.
In high temperature nozzle of the present invention, the aperture in the hole in the air blowing component 10 can be 0.1-5mm, preferably
For 0.5-3mm, more preferably 0.5-1.5mm.
In high temperature nozzle of the present invention, it is preferable that the opening direction in hole makes from hole in the air blowing component 10
The direction of the gas of middle ejection faces high-temperature gas flow field direction when not setting gas shield.It is further preferred that described blow
The angle of the radial cross-section of the opening direction and spout in hole is 30-60 ° on gas component 10, most preferably 45 DEG C.
In high temperature nozzle of the present invention, there is no particular limitation for the set-up mode of the air blowing component 10, as long as
The high-temperature gas flow field near spout exterior surface can be changed by the gas that the air blowing component 10 is blown out.In a kind of reality
It applies in mode, the air blowing component 10 is gas chamber, and the gas chamber can be arranged (as welded) in the spray by way of conventional
On mouth outer surface 7.When the air blowing component 10 is gas chamber, several holes are uniformly provided on the surface of the gas chamber, are passed through
This some holes continuously sprays gas.In another embodiment, the air ejection member 10 is around the one of the setting of spout periphery
A or multiple pipeloops (as shown in Figure 3), the pipeloop are for example fixed by welding in the spout exterior surface 7.
When the air ejection member 10 is pipeloop, several holes are uniformly provided on the pipeloop, it is continuous by this some holes
Ground sprays gas.The annular diameter of the pipeloop matches with spout exterior surface, and the diameter of the pipeloop can be
3-15mm.The diameter in the hole on the pipeloop can be adjusted according to the diameter of pipeloop, when the pipeloop
When being relatively large in diameter, the diameter in the hole on the pipeloop is also larger；When the diameter of the pipeloop is smaller, the annular
The diameter in the hole on pipeline is also smaller.
When the air ejection member 10 is pipeloop, in the preferred case, the air ejection member 10 is 2-5 loop diameter ladder
The pipeloop that the secondary pipeloop to become smaller, more preferably 3 loop diameter echelons become smaller, and the quantity in the hole on pipeloop is from outer
It is sequentially reduced to interior.The material of the pipeloop can be various heat-resisting materials, such as can be stainless steel.It is a kind of most
In preferred embodiment, the air ejection member 10 is the stainless steel pipeloop that 3 loop diameter echelons become smaller, and outer loop is uniform
Arrange 30-35 hole, intermediate endless tube is evenly arranged 18-25 hole, and inner lane endless tube is evenly arranged 15-18 hole.
In high temperature nozzle of the present invention, as illustrated in fig. 1, it is preferred that the inner cavity setting of the high temperature nozzle is aerobic
Gas feed path and gasified raw material feed path 2, and the oxygen feed path and the gasified raw material feed path 2 respectively connect
Pass to the spout.It is further preferred that the oxygen feed path includes central oxygen channel 1 and outer epoxy channel 3, the gas
Change raw material feed path 2 to be arranged around the periphery in the central oxygen channel 1, the outer epoxy channel 3 is around the gasified raw material
The periphery of feed path 2 is arranged.
In high temperature nozzle of the present invention, as illustrated in fig. 1, it is preferred that the air supply channel edge of the air blowing component 10
The outer epoxy channel 3 outer wall setting.
In high temperature nozzle of the present invention, as illustrated in fig. 1, it is preferred that being provided on the side wall of the high temperature nozzle
Cooling-part 8, for being protected to the high temperature nozzle.The cooling-part 8 is preferably cooling water coil.In high temperature nozzle
In the course of work, cooling water is injected into the cooling water coil 8 by cooling water inlet 4, and pass through 5 row of cooling water outlet
Cooling water out.
The present invention also provides a kind of methods for reducing high temperature nozzle corrosion strength, this method comprises: mentioning through the invention
The spout of the high temperature nozzle supplied injection caburation raw material and oxygen into gasification furnace, and by being arranged on spout outer ring surface
Air blowing component 10 on the continuous blow gas in hole.The gas continuously blown out by the hole in the air blowing component 10 changes spray
High-temperature gas flow field near mouth outer ring surface 7 makes the gas continuously blown out form protection gas field on spout outer ring surface 7, reduces
Influence of the high temperature gas flow to nozzle.
It can be titanium dioxide by the gas that the hole in the air blowing component 10 is blown out in method of the present invention
At least one of carbon, vapor and inert gas.The inert gas can be nitrogen.When the gas is carbon dioxide
When, on the one hand carbon dioxide can form carbon monoxide with gasification materiel haptoreaction at high temperature, and enter final gasification and produce
In object, so that carbon dioxide is utilized；On the other hand by that can be alleviated caused by carbon emission using carbon dioxide
Therefore environmental problem is preferably two by the gas that the hole in the air blowing component 10 is blown out in method of the present invention
Carbonoxide.
In method of the present invention, the gas velocity of the gas blown out by the hole in the air blowing component 10 can be 1-
50m/s, gas temperature can be 5-100 DEG C, and gas pressure is 0.5-1.5MPa higher than gasifier operation pressure.
In method of the present invention, the gasified raw material can be the conventional selection of this field, such as can be dry
Coal dust or water-coal-slurry.When the gasified raw material is dry pulverized coal, pass through the temperature for the gas that the hole in the air blowing component 10 is blown out
Preferably 70-100 DEG C of degree；When the gasified raw material is water-coal-slurry, pass through the gas of the hole blowout in the air blowing component 10
Temperature be preferably 5-95 DEG C.
Invention is further described in detail by the following examples, but protection scope of the present invention is not limited to
This.
Embodiment 1
High temperature nozzle used in the present embodiment as shown in Figure 1, the inner cavity of the high temperature nozzle be provided with central oxygen channel 1,
Gasified raw material feed path 2 and outer epoxy channel 3, periphery of the gasified raw material feed path 2 around the central oxygen channel 1
Setting, the outer epoxy channel 3 are arranged around the periphery of the gasified raw material feed path 2.On the side wall of the high temperature nozzle
It is provided with cooling water coil.Air blowing component 10 is provided on the spout outer ring surface 7 of the high temperature nozzle, the air blowing component 10
Air supply channel is arranged along the outer wall in the outer epoxy channel 3.The air blowing component 10 is the stainless steel that 3 loop diameter echelons become smaller
Endless tube, the pipeloop are welded on spout outer ring surface 7.
In high temperature nozzle, the caliber of three circle stainless steel endless tubes is 6mm, and outer ring stainless steel endless tube is evenly arranged 32 small
Hole, centre circle stainless steel endless tube are evenly arranged 20 apertures, and inner lane stainless steel endless tube is evenly arranged 16 apertures, the porose opening of institute
The angle of direction and spout outer ring surface is 45 °, and aperture is 1.5mm.In gasification furnace pressure 4.0MPa, 1200 DEG C of items of operation temperature
Under part, water-coal-slurry is sprayed by nozzle and oxygen carries out gasification process, and the protection sprayed by the hole on stainless steel endless tube
The gas velocity of atmospheric carbon dioxide is 10m/s, and gas temperature is 60 DEG C, gas pressure 5MPa.Nozzle removes after running three months
It is observed, as a result as shown in table 1 below.
Embodiment 2
The structure of high temperature nozzle employed in the present embodiment is substantially the same manner as Example 1, the difference is that, outer ring is not
Rust steel loop pipe is evenly arranged 56 apertures, and centre circle stainless steel endless tube is evenly arranged 32 apertures, the uniform cloth of inner lane stainless steel endless tube
Set 20 apertures.Nozzle is removed after running three months and is observed, as a result as shown in table 1 below.
Embodiment 3
The structure of high temperature nozzle used in the present embodiment is as follows: the inner cavity of high temperature nozzle is provided with central oxygen channel 1, gas
Change raw material feed path 2 and outer epoxy channel 3, the gasified raw material feed path 2 is set around the periphery in the central oxygen channel 1
It sets, the outer epoxy channel 3 is arranged around the periphery of the gasified raw material feed path 2.It is set on the side wall of the high temperature nozzle
It is equipped with cooling water coil.Air blowing component 10, the confession of the air blowing component 10 are provided on the spout outer ring surface 7 of the high temperature nozzle
Gas channel is arranged along the outer wall in the outer epoxy channel 3.The air blowing component 10 is and gas chamber, the gas chamber are welded on spout
On outer ring surface 7.Be evenly arranged 600 apertures on the surface of gas chamber, the aperture of aperture is 0.5mm, the porose opening direction of institute with
The angle of spout outer ring surface is 45 °.Under the conditions of gasification furnace pressure 4.0MPa, 1200 DEG C of operation temperature, sprayed by nozzle dry
Coal dust and oxygen carry out gasification process, and the gas velocity of the gas sprayed by the hole on gas chamber is 20m/s, and gas temperature is 70 DEG C,
Gas pressure is 5.5MPa.Nozzle is removed after running three months and is observed, as a result as shown in table 1 below.
Comparative example 1
Implement coal water slurry gasification processing according to the method for embodiment 1, the difference is that on the spout outer ring surface of high temperature nozzle
It is not provided with air blowing component 10.Nozzle is removed after running three months and is observed, as a result as shown in table 1 below.
Table 1
Can be seen that by the result of table 1 can obviously be delayed using high temperature nozzle of the present invention progress high-temperature process
The etching problem for solving high temperature nozzle, extends the service life of high temperature nozzle.
The preferred embodiment of the present invention has been described above in detail, and still, the present invention is not limited thereto.In skill of the invention
In art conception range, can with various simple variants of the technical solution of the present invention are made, including each technical characteristic with it is any its
Its suitable method is combined, and it should also be regarded as the disclosure of the present invention for these simple variants and combination, is belonged to
Protection scope of the present invention.
Claims (13)
1. a kind of high temperature nozzle, air blowing component (10), the air blowing component are provided on the spout outer ring surface of the high temperature nozzle
(10) there are several holes on.
2. high temperature nozzle according to claim 1, wherein the aperture in the hole on the air blowing component (10) is 0.1-5mm.
3. high temperature nozzle according to claim 1, wherein the opening direction and spout in hole on the air blowing component (10)
The angle of radial cross-section is 30-60 °.
4. high temperature nozzle described in any one of -3 according to claim 1, wherein the air blowing component (10) is gas chamber.
5. high temperature nozzle described in any one of -3 according to claim 1, wherein the air blowing component (10) is around spout
One or more pipeloops of periphery setting.
6. high temperature nozzle described in any one of -3 according to claim 1, wherein the inner cavity setting of the high temperature nozzle is aerobic
Gas feed path and gasified raw material feed path (2), and the oxygen feed path and the gasified raw material feed path are respectively
It is connected to the spout.
7. high temperature nozzle according to claim 6, wherein the oxygen feed path includes central oxygen channel (1) and outer
Epoxy channel (3), the gasified raw material feed path (2) are arranged around the periphery of the central oxygen channel (1), the outer epoxy
Channel (3) is arranged around the periphery of the gasified raw material feed path (2).
8. high temperature nozzle according to claim 7, wherein the air supply channel of the air blowing component (10) is along the outer ring
The outer wall in oxygen channel (3) is arranged.
9. high temperature nozzle described in any one of -3 according to claim 1, wherein be provided on the side wall of the high temperature nozzle
Cooling-part (8)；
Preferably, the cooling-part (8) is cooling water coil.
10. a kind of method for reducing high temperature nozzle corrosion strength, which is characterized in that this method comprises: by claim 1-9
The spout of high temperature nozzle described in any one injection caburation raw material and oxygen into gasification furnace, and by being arranged outside spout
The continuous blow gas in hole in air blowing component (10) on anchor ring.
11. according to the method described in claim 10, wherein, passing through the gas for the gas that the hole on the air blowing component (10) is blown out
Speed is 1-50m/s, and gas temperature is 5-100 DEG C, and gas pressure is 0.5-1.5MPa higher than gasifier operation pressure.
12. according to the method described in claim 10, being two by the gas that the hole on the air blowing component (10) is blown out wherein
At least one of carbonoxide, vapor and inert gas, preferably carbon dioxide.
13. method described in any one of 0-12 according to claim 1, wherein the gasified raw material is dry pulverized coal or water coal
Slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710982153.4A CN109694751A (en) | 2017-10-20 | 2017-10-20 | A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710982153.4A CN109694751A (en) | 2017-10-20 | 2017-10-20 | A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109694751A true CN109694751A (en) | 2019-04-30 |
Family
ID=66226182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710982153.4A Pending CN109694751A (en) | 2017-10-20 | 2017-10-20 | A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109694751A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283627A (en) * | 2019-07-14 | 2019-09-27 | 南京湛泸科技有限公司 | A kind of gasifier nozzle structure of helical flow path |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815399U (en) * | 2010-09-19 | 2011-05-04 | 昆明理工大学 | High-temperature-resistant burner nozzle for gasification furnace |
| CN102399593A (en) * | 2011-10-13 | 2012-04-04 | 东方电气集团东方锅炉股份有限公司 | Burner used for gasifier |
| CN202786144U (en) * | 2012-05-28 | 2013-03-13 | 张清虎 | Flame separation cover with air flow protection |
| CN104632182A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
-
2017
- 2017-10-20 CN CN201710982153.4A patent/CN109694751A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201815399U (en) * | 2010-09-19 | 2011-05-04 | 昆明理工大学 | High-temperature-resistant burner nozzle for gasification furnace |
| CN102399593A (en) * | 2011-10-13 | 2012-04-04 | 东方电气集团东方锅炉股份有限公司 | Burner used for gasifier |
| CN202786144U (en) * | 2012-05-28 | 2013-03-13 | 张清虎 | Flame separation cover with air flow protection |
| CN104632182A (en) * | 2015-02-03 | 2015-05-20 | 新奥气化采煤有限公司 | Nozzle |
Non-Patent Citations (1)
| Title |
|---|
| 吴国光等: "《煤炭气化工艺学》", 31 October 2015, 中国矿业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110283627A (en) * | 2019-07-14 | 2019-09-27 | 南京湛泸科技有限公司 | A kind of gasifier nozzle structure of helical flow path |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103981311B (en) | Blast-furnace coal powder injection rifle | |
| KR101547865B1 (en) | Quenching vessel | |
| AU2008298096B2 (en) | Process and device for treating charged hot gas | |
| CN201678694U (en) | Spray gun used for desulfuration of single blowing grain magnesium molten iron | |
| CN109694751A (en) | A kind of method of high temperature nozzle and reduction high temperature nozzle corrosion strength | |
| CN107033972A (en) | A kind of dry coal powder airflow bed gasification furnace burner with purging gas shielded | |
| JP5194504B2 (en) | Apparatus for injecting gas reducing material into blast furnace and operating method of blast furnace using the same | |
| CN101906512B (en) | Spray gun for desulfuration of single-spray particle magnesium molten iron | |
| JP2001200308A (en) | Pulverized coal blowing burner | |
| CN105316452B (en) | A kind of high rifle position process for vacuum refining based on boundling top gun | |
| CN203820808U (en) | Pulverized coal spray-blowing gun of blast furnace | |
| CN103789473B (en) | Blast furnace stopping dispensing device for water | |
| CN105985807B (en) | For carrying out the reactor of entrained flow gasification to carbon-containing fuel | |
| CN107674712A (en) | A kind of fixed bed slag gasification furnace | |
| CN107013904A (en) | A kind of CFBB A types blast cap and its manufacture method | |
| US20230015434A1 (en) | Coaxial Dual Supersonic Speed Oxygen Flow Coherent Oxygen Lance | |
| CN109869715A (en) | Slag leak-proof funnel cap and preparation method thereof and circulating fluidized bed boiler | |
| CN104342211A (en) | Long-service-life coal gasification process burner | |
| CN102286649A (en) | Water spraying gun for lowering stock line of blast furnace | |
| KR101865029B1 (en) | Gasification reactor and process | |
| CN211999790U (en) | Cyclone air blast furnace coal powder belly pipe | |
| CN101486930A (en) | Preheating coal water slurry gasification nozzle with expansion segment | |
| CN207062310U (en) | Blast furnace blowing Fuel lance | |
| CN209722060U (en) | Fine coal burner | |
| JPH0235885B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190430 |
|
| RJ01 | Rejection of invention patent application after publication |