CN209322812U - By the accumulatingdust slagging structure for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot - Google Patents
By the accumulatingdust slagging structure for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot Download PDFInfo
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- CN209322812U CN209322812U CN201821794560.9U CN201821794560U CN209322812U CN 209322812 U CN209322812 U CN 209322812U CN 201821794560 U CN201821794560 U CN 201821794560U CN 209322812 U CN209322812 U CN 209322812U
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- Prior art keywords
- fluid
- slagging
- pressuren zone
- accumulatingdust
- nozzle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
It gives up pot accumulatingdust slagging technology the utility model relates to gasification furnace, it is desirable to provide a kind of accumulatingdust slagging structure by reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot.That fluid is arranged at the ring structure of radiation waste pot water-cooling wall to supplement pipe, the negative pressuren zone that protrudes into radiation waste pot intermediate channel of inner end of fluid supplement pipe for spraying fluid, it is outer be connected to fluid supply apparatus for continue fluid replacement；The fluid being continuously introduced into can be reduced the air-flow deflection in intermediate channel for reducing the Negative Pressure Difference between main flow area and negative pressuren zone, avoid or mitigate the adherent caused dust stratification of flying dust or slagging.Compared with using soot blower system in traditional technology, negative pressure of the utility model due to reducing intermediate channel negative pressuren zone, thus deflect and reduce in radiation waste pot inlet air-flow, it can fundamentally reduce the probability to form dust stratification or slagging.Soot blower system frequency of usage can be reduced, device long-play is maintained, device can be further reduced and stop transport and loss caused by hand sweeping.
Description
Technical field
It gives up pot accumulatingdust slagging technology the utility model relates to gasification furnace, more particularly to a kind of by reducing gasification furnace radiation
The accumulatingdust slagging structure of negative pressuren zone negative pressure in useless pot.
Background technique
Radiation waste pot is the design of double-channel water cooling wall.Enter high temperature ash slag and the synthesis of radiation waste pot from gasification furnace trunnion
Gas first flows through intermediate channel, carries out being cooled to predetermined temperature after heat exchanges with water-cooling wall therein by heat radiation, big
The cinder of grain, which is fallen into the water-bath of radiation waste pot lower part, further to cool down, and locking hopper system is then transported to after slag breaker break
System.Fine grained is pre-chilled with high-temperature crude synthesis gas by radiation waste pot intermediate channel, then passes through internal layer water-cooling wall and outer layer water-cooling wall
Between circular passage flowed upward along outer layer water-cooling wall, behind the top for reaching radiant coolers, leave gasification furnace give up pot.
When gasification furnace works, coal gas enters radiation waste pot by gasification furnace trunnion, and passes through internal layer water-cooling wall and outer layer water cooling
Wall exchanges heat.The high temperature gas flow containing ash for entering radiation waste pot from gasification furnace has certain momentum, can roll up and inhale radiation waste pot entrance
Neighbouring ambient gas, so that generating negative pressuren zone in useless pot entrance neighboring area (two dotted ellipse regions in Fig. 1) makes gas
Stream deflection, makes the flying dust carried in air-flow touch interior water cooling wall surface.If flying dust is molten condition, air-flow deflection is beaten in wall surface meeting
Generate slagging；If flying dust has cooled down, air-flow deflection, which is beaten, can generate dust stratification in wall surface.Gasifier operation pressure is higher under normal conditions
(for 2.0~6.5MPa), it is contemplated that the influence factors such as allowable stress of material, gasification furnace volume often design smaller.In this way,
Gasification furnace radiation waste pot superficial dust slagging bring is affected to heat-transfer effect, and internal layer water-cooling wall thickness of slag layer increases, and makes
Thermal resistance increases, and heat exchange amount is reduced, and the gas temperature after internal layer water cooling wall outlet increases, and the effect effectively conducted heat is not achieved.
Clogging problems inside radiation waste pot are the obstacles of dry method fine coal air-flow bed coal-gasification technique to high-efficiency operation.Often at present
Radiation waste pot (including convection current give up pot) Anti-slagging measure purges water mainly by using soot blower system with high pressure gas
The surface of cold wall prevents superficial dust and the slagging of water-cooling wall.If causing dust stratification, soot blower can be opened and periodically removed.
But it still not can avoid to form slagging after long-play.At this time since black dirt is harder, then necessary device stops transport, cools down, and adopts
It manually removes method and carries out scarfing cinder operation, caused economic loss is huge.
Utility model content
The technical problems to be solved in the utility model is to overcome deficiency in the prior art, is provided a kind of by reducing gas
Change the structure of the accumulatingdust slagging of negative pressuren zone negative pressure in furnace radiation waste pot.
In order to solve the technical problem, the solution of the utility model is:
A kind of structure by reducing the accumulatingdust slagging of negative pressuren zone negative pressure in gasification furnace radiation waste pot is provided, is to radiate
Setting fluid supplements pipe at the ring structure of useless pot water-cooling wall, and the inner end of fluid supplement pipe is protruded into radiation waste pot intermediate channel
Negative pressuren zone for spraying fluid, it is outer be connected to fluid supply apparatus for continue fluid replacement；The negative pressuren zone is to be located at ring
The middle part of shape structure intermediate channel or the regional area on top, pressure are less than the main flow area pressure of intermediate channel, are continuously introduced into
Fluid for reducing the Negative Pressure Difference between main flow area and negative pressuren zone, can be reduced in intermediate channel air-flow deflection, avoid or subtract
Dust stratification or slagging caused by light flying dust is adherent.
As an improvement the outside of the nozzle does not fill flash vessel, for gas (such as raw gas) to be injected directly into
Negative pressuren zone；Alternatively, installing flash vessel in the outside of nozzle, gas is made to spray into negative pressuren zone again after dilatation reduction of speed.
As an improvement the nozzle is atomizing nozzle or air-blast atomization nozzle, outside is equipped with flash vessel,
For spraying the liquid that can be vaporized, (such as water, liquid are atomized by atomizer and after flash vessel dilatation reductions of speed, is vaporizated into
Steam)；Pressurizing device is equipped in fluid supply apparatus.
As an improvement being equipped with pressurizing device, the pressure ratio radiation waste pot of provided fluid in fluid supply apparatus
Interior pressure is higher by 0.1~3MPa；The nozzle is used to spray the mixture of water vapour or water vapour and raw gas.
As an improvement the fluid supplement pipe forms angle perpendicular to intermediate channel, or with intermediate channel.
As an improvement the nozzle is refractory heat-insulating nozzle, positioned at the top or middle part of intermediate channel, nozzle direction
It is unlimited.
Utility model principles illustrated:
In the present invention, " negative pressure " of negative pressuren zone is not necessarily referring to its absolute pressure value lower than " atmospheric pressure ", but
Refer to that the pressure of the regional area is slightly below the pressure in raw gas primary air region in intermediate channel, distribution mode is empty as shown in figure 1
Shown in line area.Due to the presence of this pressure difference, can make to occur under the influence of pressure difference in primary air containing grey high temperature gas flow
Deflection.The utility model supplements pipe from aerodynamic principle, in the negative pressuren zone setting fluid of intermediate channel, utilizes fluid
Supplement pipe tonifying Qi reduces the negative pressure of intermediate channel, reduces air-flow deflection in this way, to avoid or mitigate flying dust
Dust stratification caused by adherent or slagging.
Compared with prior art, the utility model has the beneficial effects that
1, compared with using soot blower system in traditional technology, the utility model is due to reducing the negative of intermediate channel negative pressuren zone
Pressure, thus deflect and reduce in radiation waste pot inlet air-flow, it can fundamentally reduce the probability to form dust stratification or slagging.
2, the utility model can reduce soot blower system frequency of usage, maintain device long-play, further can
It reduces and is lost caused by device stoppage in transit and hand sweeping.
Detailed description of the invention
Fig. 1 is the negative pressuren zone distribution schematic diagram in the intermediate channel of radiation waste pot.
Fig. 2 is the arrangement schematic diagram of accumulatingdust slagging structure in the utility model.
Cold-simulation test result figure when Fig. 3 is air compensation 3%.
Cold-simulation test result figure when Fig. 4 is air compensation 10%.
Cold-simulation test result figure when Fig. 5 is air compensation 16%.
Appended drawing reference in figure: 1 gasification furnace trunnion；2 outer layer water-cooling walls；3 raw gas switch-back points；4 fluids supplement pipe；5 internal layers
Water-cooling wall；The outlet of 6 raw gas.
Specific embodiment
To more fully understand the utility model, attached drawing is cooperated to elaborate below.
The utility model is realized based on the technological transformation to radiation waste pot in the prior art.The knot of radiation waste pot
Structure is as shown in Figure 1, 2, including the ring structure formed by internal layer water-cooling wall 5 and outer layer water-cooling wall 2, the centre of internal layer water-cooling wall 5
Channel is connected with gasification furnace trunnion 1, and raw gas outlet 6 is set on outer layer water-cooling wall 2.Several streams are provided at the ring structure
Body supplements pipe 4, and the inner end of fluid supplement pipe 4 sets nozzle；Fluid supplement pipe 4 perpendicular to intermediate channel axis, or with centre
Passage axis forms angle.Nozzle protrudes from 5 surface of internal layer water-cooling wall and protrudes into the negative pressuren zone of intermediate channel, and negative pressuren zone is located at should
The top or middle part of intermediate channel in ring structure；Nozzle is refractory heat-insulating nozzle, towards unlimited.The outer end of fluid supplement pipe 4
It is connected by conduit with the fluid supply apparatus being set to outside radiant boiler；Pressurizing device can be set in fluid supply apparatus, it can
Pipe 4 is supplemented by fluid and persistently supplies gas, steam or the liquid that can be vaporized into radiation waste pot, reduces the negative of intermediate channel
Negative pressure at pressure area.
Optionally 1, flash vessel can not be filled on the outside of nozzle, using nozzle directly by gas (such as raw gas)
Spray into negative pressuren zone；Alternatively, installing flash vessel in the outside of nozzle, gas is made to spray into negative pressuren zone again after dilatation reduction of speed.
Optionally 2, nozzle type selecting is atomizing nozzle or air-blast atomization nozzle, and outside is equipped with dilatation
Device, for spraying the liquid that can be vaporized (such as water), liquid is atomized by atomizer and after flash vessel dilatation reduction of speed, by vapour
Turn to steam；Pressurizing device is equipped in fluid supply apparatus.
Optionally 3, pressurizing device, the pressure ratio radiation waste pot of provided fluid are provided in fluid supply apparatus
Interior pressure is higher by 0.1~3MPa；Nozzle is used to spray the mixture of water vapour or water vapour and raw gas.
The operation for reducing the slagging of negative pressure accumulatingdust is realized based on the radiation waste pot, is described in detail below:
Gas, steam or the liquid that can be vaporized persistently are supplied from fluid supply apparatus to fluid supplement pipe 4, is located at fluid
The nozzle of supplement 4 end of pipe sprays gas, steam or atomized liquid into the negative pressuren zone of intermediate channel, atomized liquid further by
It is vaporizated into steam；The gas and steam that are continuously introduced into can reduce the negative pressure at the negative pressuren zone of intermediate channel, reduce intermediate channel
In air-flow deflection, avoid or mitigate the adherent caused dust stratification of flying dust or slagging.
The accumulatingdust slagging structure of the utility model can be run simultaneously with soot blower system in the prior art, i.e., if long
Dust stratification is formed in water cooling wall surface after time operation, soot blower system can be opened and periodically removed.Soot blower system such as occur can not
The black dirt of removing is still needed to using artificial removing method.
By reduce to improved gasification furnace radiation waste pot the cold-simulation test of negative pressure accumulatingdust slagging, knot
Fruit is as in Figure 3-5.The curve that not tonifying Qi is marked in figure indicates the original operating status of gasification furnace radiation waste pot, and tonifying Qi has used slightly
Coal gas, air compensation 3%, 10% and 16% are illustrated respectively in the percentage that radiation waste pot negative pressuren zone air compensation accounts for primary air, and interior 8
Road, outer 8 road and 16 tunnels respectively indicate tonifying Qi position, and abscissa indicates that, along gasification furnace height change, ordinate indicates that flying dust is adherent
Amount.After having used the technology of the utility model, when air compensation is primary air 3%, the reduction of the adherent amount of fly ash granule is
Clearly；When air compensation increase is 10% and 16%, the adherent amount of fly ash granule is further reduced.User can be according to Technological Economy
Compare, selects suitable air compensation.By using the utility model, blowing out slag & ash removal number can be greatly reduced, extend gasification
Furnace runing time, by technological innovation, bring economic value is obviously.
Claims (6)
1. it is a kind of by reduce gasification furnace radiation waste pot in negative pressuren zone negative pressure accumulatingdust slagging structure, which is characterized in that be
Fluid is set at the ring structure of radiation waste pot water-cooling wall and supplements pipe, the nozzle set on fluid supplement pipe inner end protrudes into radiation waste pot
Negative pressuren zone in intermediate channel for spraying fluid, it is outer be connected to fluid supply apparatus for continue fluid replacement；It is described negative
Pressure area is the regional area at the middle part or top positioned at ring structure intermediate channel, and pressure is less than the main flow area pressure of intermediate channel
Power, for the fluid being continuously introduced into for reducing the Negative Pressure Difference between main flow area and negative pressuren zone, the air-flow that can be reduced in intermediate channel is inclined
Turn, avoids or mitigate the adherent caused dust stratification of flying dust or slagging.
2. accumulatingdust slagging structure according to claim 1, which is characterized in that the outside of the nozzle does not fill flash vessel,
For gas to be injected directly into negative pressuren zone；Alternatively, installing flash vessel in the outside of nozzle, spray into gas again after dilatation reduction of speed
Negative pressuren zone.
3. accumulatingdust slagging structure according to claim 1, which is characterized in that the nozzle is atomizing nozzle or gas
Power formula atomizer, outside is equipped with flash vessel, for spraying the liquid that can be vaporized；Pressurization is equipped in fluid supply apparatus
Device.
4. accumulatingdust slagging structure according to claim 1, which is characterized in that be equipped with pressurization dress in fluid supply apparatus
It sets, the pressure ratio radiation waste pot inner pressure of provided fluid is higher by 0.1~3MPa；The nozzle is used to spray water vapour, or
It is the mixture of water vapour and raw gas.
5. accumulatingdust slagging structure according to claim 1, which is characterized in that the fluid supplement pipe is logical perpendicular to centre
Road, or angle is formed with intermediate channel.
6. accumulatingdust slagging structure according to claim 1, which is characterized in that the nozzle is refractory heat-insulating nozzle, position
In the top or middle part of intermediate channel, nozzle is towards unlimited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821794560.9U CN209322812U (en) | 2018-11-01 | 2018-11-01 | By the accumulatingdust slagging structure for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821794560.9U CN209322812U (en) | 2018-11-01 | 2018-11-01 | By the accumulatingdust slagging structure for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot |
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| Publication Number | Publication Date |
|---|---|
| CN209322812U true CN209322812U (en) | 2019-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821794560.9U Expired - Fee Related CN209322812U (en) | 2018-11-01 | 2018-11-01 | By the accumulatingdust slagging structure for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot |
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| CN (1) | CN209322812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109337718A (en) * | 2018-11-01 | 2019-02-15 | 浙江大学 | By the accumulatingdust slagging method for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot |
-
2018
- 2018-11-01 CN CN201821794560.9U patent/CN209322812U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109337718A (en) * | 2018-11-01 | 2019-02-15 | 浙江大学 | By the accumulatingdust slagging method for reducing negative pressuren zone negative pressure in gasification furnace radiation waste pot |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20201101 |