CN103232865A - Chilling chamber of slack coal slag gasifying furnace - Google Patents
Chilling chamber of slack coal slag gasifying furnace Download PDFInfo
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- CN103232865A CN103232865A CN2013101547567A CN201310154756A CN103232865A CN 103232865 A CN103232865 A CN 103232865A CN 2013101547567 A CN2013101547567 A CN 2013101547567A CN 201310154756 A CN201310154756 A CN 201310154756A CN 103232865 A CN103232865 A CN 103232865A
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Abstract
The invention relates to a chilling chamber of a slack coal slag gasifying furnace. The chilling chamber comprises a lower chilling container and an interval part section positioned on the lower chilling container and connected with the lower chilling container, the chilling chamber is connected with a gas gasifying pressure container of the slack coal slag gasifying furnace positioned on the chilling chamber, and cooling liquid is filled in the chilling chamber. The chilling chamber comprises a shield arranged in the interval part section, wherein the bottom end of the shield is immersed below the liquid level in the chilling chamber, a transverse top plate is arranged at the top of the shield, and a hole which is used for guiding fuel gas and auxiliary gas to pass through the shield and a center hole which is used for enabling slag and iron from a deslagging hole of the coal gasifying pressure container to pass through the shield are formed in the transverse top plate. According to the chilling chamber, through changing an airflow circulating path in the chilling chamber, the turbulence is reduced, and thus the probability of generating slag-bonding dirt in a combustor, the deslagging hole and a pipeline when the slag and the iron drop is reduced.
Description
Technical field
Present invention relates in general to the broken coal slag gasification furnace, the shock chamber that particularly relates to a kind of broken coal slag gasification furnace arranges.
Background technology
The broken coal slag gasification furnace comprises the gasification pressurized vessel of a column.Coal or other carbonaceous fuel drop into from gasification pressurized vessel top, utilize blast orifice (nozzle) oxygen that stove is outer and steam to cause in the bottom fuel in the gasification pressurized vessel, make coal or other carbonaceous fuel gasifying under High Temperature High Pressure.Residual ash such as slag and iron are collected in the slag bath of gasification pressurized vessel, and slag and Tie Tong cross the slag-drip opening of slag bath and discharge (being called " deslagging " usually) off and on, and slag enters in the water of shock chamber, slag bath bottom and obtains cold shock and cooling.The combustion gas product of heat obtains by the ejection of the burner in the spacer segments, burning, upwards transmits with the bubbling form through slag-drip opening, to hold slag and the iron in the slag bath.By the control blowdown system from spacer segments to atmospheric steam exhaust, reduce shock chamber's pressure, between shock chamber and gasification pressurized vessel, produce differential pressure, utilize pressure reduction and liquid level to limit and promote slag and iron discharges downwards.
The vapourizing furnace of present the above-mentioned type is connected with the spacer segments top by the tubaeform bottom end opening of bottom slag-drip opening, and burner arrangement is around the slag-drip opening bottom.The air endless tube was placed in the shock chamber that only is higher than water level in the past, upwards sprayed combustion-supporting gas, so that combustion-supporting gas helps to keep the internal surface cooling along the internal surface upwards mobile (towards slag-drip opening) of top, shock chamber spacer segments.Actual motion finds that slag-drip opening and burner can produce slagging scorification and dirt.It produces reason may be that slag-drip opening has too much slag and iron drippage between twice deslagging.The combustion-supporting atmosphere interaction that the products of combustion that burner comes and air endless tube come causes strong turbulent flow in the shock chamber, these drops are split into small droplets.These small dropletss transport with gas, are deposited on each parts surface in the shock chamber, for example air endless tube and burner surface.
The surperficial slagging scorification of slag in the shock chamber of vapourizing furnace bottom forms dirt, can have a strong impact on life-span of Quench indoor equipment and pipeline and easy to operate, and then influences stable operation and the cycle of operation of vapourizing furnace, and parking maintenance will cause enormous economic loss.
Therefore, the those skilled in the art needs a kind of shock chamber that can effectively avoid or reduce the broken coal slag gasification furnace of the unfavorable deposition of slag to arrange.
Summary of the invention
In order to reduce slag and iron to surperficial slagging scorification and the deposition of easily worn part burner, slag-drip opening and pipeline, prolong its life-span and maintenance intervals, reduce financial loss, improve the stability of vapourizing furnace operation, the present invention aim to provide a kind of can avoid or reduce the unfavorable deposition of slag the broken coal slag gasification furnace.Described broken coal slag gasification furnace has improved shock chamber spatial arrangement structure, by changing the means in the airflow circulation path in the shock chamber, reducing turbulent flow, thereby burner, pipeline is produced when reducing slag and iron drippage the probability of slagging scorification and dirt.
Unless Special Circumstances have other restrictions, otherwise following definition is applicable to the term that uses in this specification sheets.
In addition, unless describe separately, the implication of all scientific and technical terminologies used herein is the same with those skilled in the art in the invention's common sense.As conflict, be as the criterion with this specification sheets and the definition that comprises thereof.
For the present invention, the implication of more employed terms is as follows in the present specification:
" burner " refers to the combustion unit used on the industrial fuel stove, and burner is commonly called as in the industry is " burner ".
" blast orifice " refers to the gasification pressurized vessel bottom near the broken coal slag gasification furnace, be used for spraying into the combustion zone that single stream strand (as introducing steam and oxygen, air, nitrogen etc.) or process stream (as coal water slurry, tar etc.) enter vapourizing furnace, these parts are commonly called as in the industry is " nozzle ".
" deslagging " refers in the broken coal slag gasification furnace, and the slag-drip opening that slag bath is crossed by slag and Tie Tong is discharged downwards off and on, enters the process in the water of shock chamber, slag bath bottom.
Portion's section that " spacer segments " refers to be arranged between gasification pressurized vessel and the bottom Quench container and link to each other with following bottom Quench container with top gasification pressurized vessel respectively, this section is arranged on the top of shock chamber, can be rendered as forms such as " connection pipe nipple ", " sandwich flange ".
" other carbonaceous fuel " comprises solid-state or liquid fuels such as solid refuse, solid carbon biomass, tar, residual oil, carbon containing biomass slip.
As used herein, directional terminology " on ", D score is consistent with concrete direction on the Figure of description paper.Term " vertically ", " vertically " refer on the Figure of description paper vertical substantially direction; And " laterally ", " level " refer on the Figure of description paper direction of level substantially.
As used herein, term " about " is that index amount, size, prescription, parameter and other quantity and characteristic are coarse and need not be accurate value, but can be similar to and/or be greater than or less than exact value with exact value, so that reflection tolerance deviation, measuring error etc., and known other factors of those skilled in the art.
When this paper has the word of " those skilled in the art is known " phrase or synonym or phrase when describing material, method or mechanical means, this term represents that described material, method and mechanical means are conventional when submitting present patent application to, and is included in this specification sheets.Be covered by equally and in this description be, but at present unconventionally when being applicable to similar purpose, will become art-recognized material, method and machinery.
As used herein, term " comprises ", " containing ", " comprising ", " containing ", " having " or any other synonym or their any other modification all refer to comprising of nonexcludability.For example, comprise that technology, method, goods or the equipment of specific factor tabulation needn't only limit to the key element that those are specifically listed, but can comprise the key element that other are not clearly listed, or the intrinsic key element of this type of technology, method, goods or equipment.
Term " by ... form ", " by ... constitute " or any other synonym or their any other modification all refer to comprising of exclusiveness.For example, the technology that is made of specific factor, method, goods or equipment only limit to those key elements of specifically listing.
Particularly, as described below for realizing the technical scheme that above-mentioned purpose of the present invention adopts:
1. the shock chamber of a broken coal slag gasification furnace, above described shock chamber comprises bottom Quench container and is positioned at described bottom Quench container and the spacer segments that links to each other with described bottom Quench container, described shock chamber links to each other with the gasification pressurized vessel of broken coal slag gasification furnace on being positioned at described shock chamber by described spacer segments, be filled with cooling liqs in the described shock chamber
It is characterized in that, described shock chamber comprises the guard shield that is arranged in the described spacer segments, the bottom of described guard shield is immersed in below the liquid level in the described shock chamber, the top of described guard shield is provided with laterally, and is provided with above laterally taking over a business for guiding fuel gas and combustion-supporting gas by the hole of described guard shield with make the central opening that slag and iron from described gasification pressurized vessel slag-drip opening can pass through described guard shield described.
2. according to technical scheme 1 described shock chamber, it is characterized in that, the opening of air endless tube, burner and gasification pressurized vessel slag-drip opening radially from outside to inside be set in sequence in described guard shield laterally take over a business the top, described air endless tube and described burner are all roughly in the same plane with the opening of described slag-drip opening, and with the coaxial setting of the longitudinal axis of described slag-drip opening.
3. according to technical scheme 1 or 2 described shock chambers, it is characterized in that described guard shield is the cylinder form of hollow, the longitudinal axis with vertical barrel and described guard shield coincides with the longitudinal axis of described slag-drip opening basically.
4. according to each described shock chamber among the aforementioned techniques scheme 1-3, it is characterized in that described shock chamber comprises the round shape perpendicular outer wall with the coaxial setting of longitudinal axis of described slag-drip opening.
5. according to each described shock chamber among the aforementioned techniques scheme 2-4, it is characterized in that the perforate of described burner is arranged to be tilted to down towards the direction of the longitudinal axis of described slag-drip opening, in order to guide fuel gas and combustion-supporting gas by described guard shield.
6. according to each described shock chamber among the aforementioned techniques scheme 2-4, it is characterized in that, the outlet opening of described air endless tube is arranged to pass vertically downward guard shield laterally to be taken over a business to go up the hole that correspondence is offered, and forms annular circulating current in order to guide combustion-supporting gas in the described guard shield of described shock chamber.
7. according to technical scheme 6 described shock chambers, it is characterized in that the center of the outlet opening of the center of the perforate of described burner and described air endless tube is in respectively on separately the same circle, and all centered by the longitudinal axis of described slag-drip opening.
8. according to technical scheme 7 described shock chambers, it is characterized in that place, the center circular diameter of the outlet opening of described air endless tube is less than the internal diameter of described guard shield barrel, still greater than 50% of described guard shield barrel internal diameter.
9. according to technical scheme 8 described shock chambers, it is characterized in that, place, the center circular diameter of the outlet opening of described air endless tube be roughly described guard shield barrel internal diameter 70 ~ 85%.
10. according to each described shock chamber among the aforementioned techniques scheme 4-9, it is characterized in that pipeline is disposed between guard shield barrel and shock chamber's outer wall.
Adopt technical scheme of the present invention can obtain following technique effect:
1. because the opening of air endless tube, burner and slag-drip opening is roughly arranged at grade, therefore can avoid dripping slag to the disadvantageous effect of air endless tube, burner and slag-drip opening.Near slag-drip opening arrange combustion gas product that burner is conducive to burner in slag-drip opening and the slag bath slag and iron conducts heat and the holder slag, reduced the frequency that slag-drip opening stops up, promoted the stability of vapourizing furnace operation, prolonged the cycle of gasifier operation.
2. the perforate of burner is tilted to down setting, can impel along arrow 14 directions shown in Figure 1 to produce airflow circulation power.The outlet opening of air endless tube arranges vertically downward, can impel combustion-supporting gas in guard shield, to produce airflow circulation power along arrow 16 directions, the barrel of guard shield has not only been cooled off in the circulation of air-flow, also impels a possible slag to drop in the water of shock chamber along the direction of arrow 14.During airflow circulation, have at least the part air-flow to flow along arrow 34 directions, but the barrel of cool cap also reduces the temperature in the shock chamber, make chill effect reach best.The air endless tube is arranged at laterally takes over a business the top, has improved the phenomenon of gas turbulence, slag and deposition of iron in the aggravation spacer segments that the water surface that prior art hollow compression ring pipe setting only is higher than the shock chamber produces.
3. guard shield laterally takes over a business to be arranged under burner, the air endless tube; between guard shield barrel and shock chamber's outer wall, arrange pipeline; not only reduced the damping effect of bringing because of various piping arrangements; and protected burner, air endless tube and various pipeline to be subjected to or not to be subjected to the influence of slag and deposition of iron less; make the air-flow in guard shield and the shock chamber tend towards stability; deposition reduces, and has prolonged the stable operation cycle of vapourizing furnace and has reduced frequency of maintenance.
4. the diameter of air endless tube can directly have influence on the airflow circulation in the guard shield, so the diameter of hollow compression ring pipe of the present invention is less than the internal diameter of guard shield barrel, still greater than 50% of guard shield barrel internal diameter.Especially, be roughly 70 of guard shield internal diameter ~ 85% o'clock at the diameter of air endless tube, the constraint airflow circulation is carried out according to diagram dotted line and the direction of arrow greatly, can make the influence of dripping slag deposits drop to minimum.
Description of drawings
Describe the present invention below in conjunction with Figure of description.Figure of description might not be draw in strict accordance with ratio and Figure of description only be schematic diagram.In the application's Figure of description, use same or analogous drawing reference numeral to represent same or analogous element.
Fig. 1 shows the incomplete cross section view of broken coal slag gasification furnace according to an embodiment of the invention, this incomplete cross section view shows the top part of lower end and the shock chamber of gasification pressurized vessel, and this incomplete cross section view shows the annular circulating current that forms especially in shock chamber's upper shroud; With
Fig. 2 is the section enlarged view of burner shown in Fig. 1.
Parts and reference numerals list
| 1 | The gasification pressurized vessel |
| 2 | The second annular slag bath member |
| 3 | Slag off apparatus |
| 4 | Slag- |
| 5 | Recess |
| 6 | Burner |
| 7 | |
| 8 | |
| 9 | Bottom Quench container |
| 10 | The air endless tube |
| 11 | Air endless tube outlet opening |
| 12 | Circulating current flows to |
| 13 | Circulating current flows to |
| 14 | Circulating current flows to |
| 15 | Circulating current flows to |
| 16 | Circulating current flows to |
| 17 | Liquid level or |
| 18 | The longitudinal axis of slag-drip opening |
| 19 | Second circular channel |
| 20 | First circular channel |
| 21 | |
| 22 | First perforate |
| 23 | The |
| 24 | |
| 25 | Second perforate |
| 26 | |
| 27 | The |
| 28 | |
| 29 | The |
| 30 | Second supply- |
| 31 | First supply- |
| 32 | The first annular slag bath member |
| 33 | |
| 34 | Circulating current flows to |
| 35 | |
| 36 | First angle |
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is elaborated, but it is pointed out that protection scope of the present invention is not subjected to the restriction of these embodiments, but determined by claims.
Fig. 1 shows the incomplete cross section view of broken coal slag gasification furnace according to an embodiment of the invention, this incomplete cross section view shows the top part of lower end and the shock chamber of gasification pressurized vessel, and this incomplete cross section view shows the annular circulating current that forms especially in shock chamber's upper shroud.
Referring to Fig. 1, broken coal slag gasification furnace according to an embodiment of the invention comprises the gasification pressurized vessel 1 that is positioned on the shock chamber 27, is filled with for example water of cooling liqs in this shock chamber 27.Liquid level in this shock chamber 27 or liquid level are shown in Reference numeral 17.
Gasification pressurized vessel 1 adopts known mode to seal and has the composite fire lining.Coal or other carbonaceous fuel drop into from gasification container 1 top, and vaporized chemical for example oxygen, steam is introduced from the blast orifice that arranges near gasification pressurized vessel 1 bottom, impels coal or other carbonaceous fuel gasifying.Be provided with the inclination burner hearth that is limited by slag bath and slag off apparatus 3 in gasification pressurized vessel 1 lower end.The slag bath that is positioned at gasification pressurized vessel 1 lower end can be limited by one or more slag bath members.As shown in Figure 1, described slag bath member comprises the first annular slag bath member 32 and links to each other with the first annular slag bath member 32 and be positioned at the second annular slag bath member 2 below the first annular slag bath member 32.It is slag-drip opening 4 that slag off apparatus 3 has the rounded upright opening in cross section, and described slag-drip opening 4 has longitudinal axis 18 and is positioned at described slag-drip opening 4 opening 26 bottom.
The broken coal slag gasification furnace is when work, a large amount of slags is collected in slag bath and the slag off apparatus 3, slag falls into the water of shock chamber 27 off and on through slag-drip opening 4 by opening 26, slag is delivered to slag lock (not shown) by cold shock and cooling back with the form of the tiny glass particle of densification.
Fig. 2 is the section enlarged view of burner shown in Fig. 1.By seeing among Fig. 2: burner 6 has the downside that two first concentric circular channels 20 and second circular channel, 19, the first ports 24 and second port 21 extend through first circular channel 20 and second circular channel 19 respectively.First port 24 and second port 21 extend to first perforate 22 and second perforate 25 from first circular channel 20 and second circular channel 19 respectively.Fuel gas and combustion-supporting gas enter first circular channel 20 of burner 6 and the second circular channel 19(referring to Fig. 1 through supplying with first supply-pipe 31 and second supply-pipe 30 respectively).Fuel gas can be high methane gas or Sweet natural gas or greater than minimum calorific value 12 MJ/Nm
3Single or mixed gas.Combustion-supporting gas can be the mixture of oxygen or air or oxygen and nitrogen and/or carbonic acid gas or the mixture of air and nitrogen and/or carbonic acid gas.Fuel gas is supplied with by first channel 20, flows to guard shield 7 internal combustion of shock chamber 27 then through first perforate 22.First perforate 22 is around the circumferential disposed at equal distance of burner 6 inside bottom.The back of each first perforate 22 (outside) directly is exactly corresponding second perforate 25.Combustion-supporting gas, for example air is supplied with by second circular channel 19, flows out with the auxiliary fuel gas firing through perforate 25 then.Shown in the sectional view of Fig. 2, first perforate 22 and second perforate 25 are radial longitudinal axis 18 towards slag-drip opening 4 usually and extend.Each perforate has a central axis.Particularly, as shown in FIG., first perforate 22 has the first port axis 29, and second perforate 25 has the second port axis 23.The first port axis 29 of first perforate 22 becomes roughly 15 ° of angles with horizontal plane, with longitudinal axis 18 formation first angle 36 of slag-drip opening 4, described first angle 36 is acute angle, is roughly 75 ° as shown in fig. 1.The second port axis 23 of second perforate 25 becomes roughly 15 ° of angles with horizontal plane, with longitudinal axis 18 formation second angle 35 of slag-drip opening 4, described second angle 35 is acute angle, is roughly 75 ° as shown in fig. 1.Therefore, burning gas flows out from burner 6, enters in the shock chamber 27 by guard shield 7 along the direction (see figure 1) of arrow 14, and its direction vector comprises horizontal component and vertical component.
Back again referring to Fig. 1, metal skirt 7 is installed in the spacer segments 8 on 27 tops, shock chamber, is used for avoiding producing strong turbulent flow and forms airflow circulation in guard shield 7.Guard shield 7 is the cylinder form of hollow, is upright and the longitudinal axis of guard shield 7 coincides with the longitudinal axis 18 of described slag-drip opening 4 basically.The bottom of guard shield 7 is immersed in the liquid level of shock chamber below 17, the top of guard shield 7 is provided with laterally, and is provided with above laterally taking over a business for guiding fuel gas and combustion-supporting gas by the hole of guard shield 7 with make and can enter central opening in the shock chamber 27 by guard shield 7 from the slag of described gasification pressurized vessel slag-drip opening 4 and iron described.This central opening is a bit larger tham burner 6 by diameter edge ring around, thereby make the shock chamber of bottom face in the guard shield 7 of burner 6 and slag-drip opening 4.
Air endless tube 10 arranges and is installed on the taking over a business of guard shield 7 round burner 6, and the central axis of air endless tube 10 coincides with the longitudinal axis 18 of described slag-drip opening 4 basically.Air endless tube 10 is roughly in the same plane with the opening 26 of slag-drip opening 4.Have a plurality of outlet openings 11 that are short tube shape vertically downward below air endless tube 10 equidistantly, described outlet opening 11 is passed down through guard shield and takes over a business to go up the hole that correspondence is offered.Combustion-supporting gas is supplied by air endless tube 10, and flows in the guard shield 7 of shock chamber 27.
The center of the vertical axis of outlet opening 11 is on the same circle centered by the longitudinal axis 18 of slag-drip opening 4 substantially, and this circular diameter is greater than 50% of guard shield 7 barrel internal diameters, and for example, this circular diameter can be chosen and equal 80% of guard shield 7 barrel internal diameters.The exhaust outlet 33 that is arranged in the vapor pipe upper end passes guard shield and takes over a business the opening that correspondence is offered.Vapor pipe links to each other with combustion gas product blowdown system or the extraction system (not shown) of band valve.
The center of the outlet opening of the center of the perforate of described burner 6 and described air endless tube 10 is in respectively on separately the same circle, and all centered by the longitudinal axis 18 of described slag-drip opening 4.
All various pipelines are arranged between guard shield 7 and shock chamber's 27 outer walls 28, are not subjected to the influence of thermoradiation efficiency and a slag slagging scorification and deposition in the guard shield exterior domain with the protection pipeline.Preferably, described shock chamber 27 comprises the round shape perpendicular outer wall 28 with the longitudinal axis 18 coaxial settings of described slag-drip opening 4.
Below, the mode of operation of broken coal slag gasification furnace of the present invention is described.
When broken coal slag gasification furnace of the present invention work but when not having deslagging, the combustion gas product blowdown system is closed.Combustion gas product from burner 6 flows along the direction shown in the arrow 14 at first, combustion-supporting gas from the outlet opening 11 of air endless tube 10 at first flows along the direction of arrow 16, and has at least part of air-flow as to the inwall cooling that circulates to keep guard shield 7 shown in the upward arrow 34 along the inwall of guard shield 7.Observed and occurred in the gas circulation flow pattern of liquid level more than 17, shown in arrow and dotted line in the shock chamber among Fig. 1 27.Because the pressure of shock chamber 27 is higher than the pressure in the gasification pressurized vessel 1, the products of combustion of heat rises through slag-drip opening 4, and is as shown in arrow 15, gives slag and iron heat supply in the slag bath, helps it to keep molten state.When needing deslagging, combustion gas product blowdown system open operation for example by opening the mode of valve, makes that the gas in the shock chamber 27 is discharged, for example discharged to atmosphere.So just reduced the pressure of shock chamber 27, its pressure that is lower than gasification container 1 or pressure are decreased.Under the effect of pressure reduction and slag liquid level, slag and iron are discharged downwards via slag-drip opening 4, enter in the water of shock chamber 27.As stopping deslagging, for example close the products of combustion emissions operation by the mode of closing the blowdown system valve.
In the tapping process, the supply of burner 6 required fuel gas can reduce or stop, and mainly is for fuel saving, but this is not necessary.
Adopt shock chamber's placement technique scheme of broken coal slag gasification furnace of the present invention can obtain following useful technique effect:
1. because the opening 26 of air endless tube 10, burner 6 and slag-drip opening 4 is roughly arranged at grade, therefore can avoid dripping slag to the disadvantageous effect of air endless tube 10, burner 6 and slag-drip opening 4.Near slag-drip opening 4 arrange combustion gas product that burner 6 is conducive to burner 6 in slag-drip opening 4 and the slag bath slag and iron conducts heat and the holder slag, reduced the frequency that slag-drip opening 4 stops up, promote the stability of vapourizing furnace operation, prolonged the cycle of gasifier operation.
2. the perforate 22,25 of burner 6 is tilted to down setting, can impel along arrow 14 directions shown in Figure 1 to produce airflow circulation power.The outlet opening 11 of air endless tube 10 arranges vertically downward, can impel combustion-supporting gas in guard shield 7, to produce airflow circulation power along arrow 16 directions, the barrel of guard shield 7 has not only been cooled off in the circulation of air-flow, also impels a possible slag to drop in the water of shock chamber 27 along the direction of arrow 14.During airflow circulation, have at least the part air-flow to flow along arrow 34 directions, but the barrel of cool cap 7 also reduces the temperature in the shock chamber 27, make chill effect reach best.Air endless tube 10 is arranged at laterally takes over a business the top, has improved the phenomenon of gas turbulence, slag and deposition of iron aggravation in the aggravation spacer segments 8 that the water surface that prior art hollow compression ring pipe setting only is higher than shock chamber 27 produces.
3. guard shield 7 laterally takes over a business to be arranged under burner 6, the air endless tube 10; between guard shield barrel and shock chamber's outer wall 28, arrange pipeline; not only reduced the damping effect of bringing because of various piping arrangements; and protected burner 6, air endless tube 10 and various pipeline to be subjected to or not to be subjected to the influence of slag and deposition of iron less; make the air-flow in guard shield 7 and the shock chamber 27 tend towards stability; deposition reduces, and has prolonged the stable operation cycle of vapourizing furnace and has reduced frequency of maintenance.
4. the diameter of air endless tube 10 can directly have influence on the airflow circulation in the guard shield 7, so the diameter of hollow compression ring pipe 10 of the present invention is less than the internal diameter of guard shield 7 barrels, still greater than 50% of guard shield 7 barrel internal diameters.Especially, be roughly 70 ~ 85% o'clock of guard shield 7 internal diameters at the diameter of air endless tube 10, can greatly retrain airflow circulation and carry out according to diagram dotted line and the direction of arrow, can make the influence of dripping slag deposits drop to minimum.
Though more than in conjunction with the embodiments the specific embodiment of the present invention is had been described in detail, it is pointed out that protection scope of the present invention is not subjected to the restriction of these embodiments, but determined by appending claims.The those skilled in the art can carry out suitable change to these embodiments in the scope that does not break away from technological thought of the present invention and purport, and these embodiments after changing obviously are also included within protection scope of the present invention.
Claims (10)
1. the shock chamber of a broken coal slag gasification furnace, above described shock chamber comprises bottom Quench container and is positioned at described bottom Quench container and the spacer segments that links to each other with described bottom Quench container, described shock chamber links to each other with the gasification pressurized vessel of broken coal slag gasification furnace on being positioned at described shock chamber by described spacer segments, be filled with cooling liqs in the described shock chamber
It is characterized in that, described shock chamber comprises the guard shield that is arranged in the described spacer segments, the bottom of described guard shield is immersed in below the liquid level in the described shock chamber, the top of described guard shield is provided with laterally, and is provided with above laterally taking over a business for guiding fuel gas and combustion-supporting gas by the hole of described guard shield with make the central opening that slag and iron from described gasification pressurized vessel slag-drip opening can pass through described guard shield described.
2. shock chamber according to claim 1, it is characterized in that, the opening of air endless tube, burner and gasification pressurized vessel slag-drip opening radially from outside to inside be set in sequence in described guard shield laterally take over a business the top, described air endless tube and described burner are all roughly in the same plane with the opening of described slag-drip opening, and with the coaxial setting of the longitudinal axis of described slag-drip opening.
3. shock chamber according to claim 1 is characterized in that, described guard shield is the cylinder form of hollow, and the longitudinal axis with vertical barrel and described guard shield coincides with the longitudinal axis of described slag-drip opening basically.
4. shock chamber according to claim 3 is characterized in that, described shock chamber comprises the round shape perpendicular outer wall with the coaxial setting of longitudinal axis of described slag-drip opening.
5. according to each described shock chamber among the aforementioned claim 2-4, it is characterized in that the perforate of described burner is arranged to be tilted to down towards the direction of the longitudinal axis of described slag-drip opening, in order to guide fuel gas and combustion-supporting gas by described guard shield.
6. according to each described shock chamber among the aforementioned claim 2-4, it is characterized in that, the outlet opening of described air endless tube is arranged to pass vertically downward guard shield laterally to be taken over a business to go up the hole that correspondence is offered, and forms annular circulating current in order to guide combustion-supporting gas in the described guard shield of described shock chamber.
7. shock chamber according to claim 6 is characterized in that, the center of the outlet opening of the center of the perforate of described burner and described air endless tube is in respectively on separately the same circle, and all centered by the longitudinal axis of described slag-drip opening.
8. shock chamber according to claim 7 is characterized in that, place, the center circular diameter of the outlet opening of described air endless tube is less than the internal diameter of described guard shield barrel, still greater than 50% of described guard shield barrel internal diameter.
9. shock chamber according to claim 8 is characterized in that, place, the center circular diameter of the outlet opening of described air endless tube be roughly described guard shield barrel internal diameter 70 ~ 85%.
10. shock chamber according to claim 4 is characterized in that, pipeline is disposed between guard shield barrel and shock chamber's outer wall.
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| CN2013101547567A CN103232865A (en) | 2013-04-28 | 2013-04-28 | Chilling chamber of slack coal slag gasifying furnace |
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| EP0686688A1 (en) * | 1994-06-09 | 1995-12-13 | British Gas plc | Coal slagging gasifier |
| CN202849350U (en) * | 2012-08-30 | 2013-04-03 | 上海锅炉厂有限公司 | Entrained-flow bed gasifier chilling device with function of preventing slag blockage |
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2013
- 2013-04-28 CN CN2013101547567A patent/CN103232865A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4828580A (en) * | 1988-08-01 | 1989-05-09 | Texaco Inc. | Quench ring insulating collar |
| EP0686688A1 (en) * | 1994-06-09 | 1995-12-13 | British Gas plc | Coal slagging gasifier |
| CN202849350U (en) * | 2012-08-30 | 2013-04-03 | 上海锅炉厂有限公司 | Entrained-flow bed gasifier chilling device with function of preventing slag blockage |
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Application publication date: 20130807 |