CN203559025U - Water-coal-slurry and natural gas combined gasification furnace - Google Patents
Water-coal-slurry and natural gas combined gasification furnace Download PDFInfo
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- CN203559025U CN203559025U CN201320653137.8U CN201320653137U CN203559025U CN 203559025 U CN203559025 U CN 203559025U CN 201320653137 U CN201320653137 U CN 201320653137U CN 203559025 U CN203559025 U CN 203559025U
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Abstract
The utility model relates to a water-coal-slurry and natural gas combined gasification furnace. The water-coal-slurry and natural gas combined gasification furnace comprises a furnace liner, a quenching ring, a flow guide tube, a flow baffling tube, an annular water seal groove, a gasification raw material inlet, a crude coal gas outlet and a slag outlet, wherein a gasification spraying nozzle is matched with the gasification raw material inlet and comprises an ignition rod, an ignition fuel gas center pipe, an inner oxygen annular pipe, a water-coal-slurry annular pipe, a natural gas annular pipe, an outer oxygen annular pipe and a cooling annular pipe which are sleeved coaxially from inside to outside; the lower end of the water-coal-slurry annular pipe extends downward to form a water-coal-slurry and natural gas mixing cavity and is connected with the lower end of the natural gas annular pipe; the natural gas annular pipe is communicated with the internal of the mixing cavity through natural gas spraying nozzles; a mixture spraying port is formed in the lower part of the water-coal-slurry and natural gas mixing cavity; the shafts of a plurality of natural gas spraying ports are not in the radial direction of the circumference formed by the side wall of the water-coal-slurry and natural gas mixing cavity. The gasification furnace is suitable for the combined gasification of the water-coal-slurry and the natural gas, the efficiency of cold gas is improved, the ratio of hydrogen to carbon monoxide in a product is improved, and the emission of carbon dioxide in the preparation process of a synthesis gas is reduced.
Description
Technical field
The utility model relates to a kind ofly combines by coal water slurry and Sweet natural gas the vapourizing furnace gasifying, and belongs to equipment for gasification technical field.
Background technology
Coal water slurry is the fluid fuel being obtained with the mixed merga pass Physical Processing of certain proportion by coal, water and additive, because coal resources in China is distributed in the north and west area mostly, the general layout of transport the coal in the North to the South for a long time, Xi Meidong adjusting has increased transportation and running cost, and coal water slurry can realize the long distance conveying of fully-closed, can reduce transportation and the running cost of coal, therefore the application of the industry of COAL-WATER SLURRY TECHNOLOGY is subject to extensive concern.
Gasification is the mode of a kind of coal processing in existing coal chemical technology, it is take coal as raw material, the gas such as oxygen, water vapour is as vaporized chemical, at high temperature by chemical reaction, the combustible portion in coal is converted into the process of geseous fuel or synthetic gas, the direct product of gasification mainly contains carbon monoxide, carbonic acid gas, hydrogen and a small amount of methane, hydrogen sulfide etc.Coal water slurry gasification technology is a kind of more coal water slurry processing and utilization method of Recent study, what China realized industrial applications the earliest is Texaco coal slurry gasifier, its gasification is: coal water slurry is broken under the effect of high speed oxygen by nozzle, atomization sprays into vapourizing furnace, oxygen and coal water slurry are subject to high temperature action in stove, experience preheating rapidly, moisture evaporation, the dry distillation of coal, the physics of the series of complexes such as volatile matter cracking burning and carbon gasification, chemical reaction, finally generate with carbon monoxide, hydrogen, carbonic acid gas and water vapour are the wet gas of main component, slag and unreacted carbon, these resultants flow downward together and leave reaction zone, enter the shock chamber of vapourizing furnace bottom, slag and carbon are trapped within water through quenching, after solidifying, and finally fall into slag ladle, through dreg removing system regular discharge, wet gas enter coal gas cooling and purifying system process after obtain clean coal gas.
Existing Texaco vapourizing furnace needed first pre-hot nozzle to be installed on vapourizing furnace before going into operation, and lighted pre-hot nozzle and completed after baker, more fast pre-hot nozzle is unloaded and installed rapidly feed nozzle and carry out follow-up coal water slurry feed gasification; But easily there is the leakage problem of combustion gas, oxygen in above-mentioned technique, and the volume of pre-hot nozzle and feed nozzle is large, temperature is high, easily operator is caused to personal injury in the process of the pre-hot nozzle of removal and installation feed nozzle.In order to address the above problem, Chinese patent literature CN202509052U discloses a kind of combining nozzle for coal water slurry or pulverized coal gasification furnace, and in the middle of comprising, oxygen passage, leads to vapourizing furnace inner chamber; The passage that feeds intake, leads to vapourizing furnace inner chamber and extends in the periphery of middle oxygen passage; Annular space oxygen passage, leads to vapourizing furnace inner chamber and extends in the periphery of the passage that feeds intake, and wherein feeds intake and is provided with the first cooling water jecket between passage and annular space oxygen passage, and annular space oxygen passage periphery is provided with the second cooling water jecket; And the protective casing of spark electrode and spark electrode, be all arranged on the outside of the passage that feeds intake.This combining nozzle can avoid high speed water coal slurry or coal dust to the washing away of spark electrode, and has also improved the homogeneity of coal water slurry in the passage that feeds intake or coal dust ejection, has reduced the inclined to one side spray phenomenon of nozzle.
With the vapourizing furnace of above-mentioned combining nozzle, can realize continuous ignition and the gasification of coal water slurry, without changing nozzle, greatly improve security and the economy of vapourizing furnace production run.But, the cold gas efficiency of above-mentioned coal water slurry gasification is low, and while preparing follow-up methyl alcohol or synthetic wet goods product using above-mentioned coal water slurry gasification product as raw material, because the ratio of hydrogen and carbon monoxide in coal water slurry gasification product is too low, need to increase conversion process is that hydrogen is to improve the ratio of hydrogen and carbon monoxide by part carbon monodixe conversion, so not only improved the complexity of technique, and conversion process produces a large amount of CO
2, a large amount of CO of discharge after coal gas desulfurization decarburization purifies
2greenhouse gases have also polluted environment.
Applicant attempts kind by adjusting coal water slurry gasification raw material and improves the ratio of hydrogen and carbon monoxide in cold gas efficiency and gasification product, still adopts the vapourizing furnace of said structure to adjust the kind of gasified raw material.
Utility model content
Technical problem to be solved in the utility model is that the vapourizing furnace of prior art exists coal water slurry gasification cold gas efficiency low, in product, the ratio of hydrogen and carbon monoxide is low, the synthetic raw gas that could serve as subsequent product after the ratio that need improve hydrogen and carbon monoxide through conversion process is used, and conversion process has not only improved process complexity, and produce a large amount of CO
2greenhouse gases, although the kind that applicant attempts by adjusting coal water slurry gasification raw material overcomes above-mentioned shortcoming, existing gasification furnace structure can not meet above-mentioned requirements; And then propose a kind of capable of regulating gasified raw material kind, thereby improve coal water slurry and the Sweet natural gas combined vaporizing stove of coal water slurry gasification cold gas efficiency and hydrogen and carbon monoxide ratio.
For solving the problems of the technologies described above, the utility model provides a kind of coal water slurry and Sweet natural gas combined vaporizing stove, comprises
Furnace shell;
Flue, chilling ring and guide shell, be connected in described furnace shell from top to bottom successively;
Baffling cylinder, part is set in the outside of described guide shell, is positioned at the below of described chilling ring;
Annular seal-water tank, is arranged between described furnace shell and guide shell;
Gasified raw material import, is arranged at the top of described furnace shell, is connected with described flue inside;
Raw gas outlet, is arranged on the furnace shell sidewall of described water sealed tank below;
Slag notch, is arranged at the bottom of described furnace shell;
Gasification nozzle, suitable with described gasified raw material import, for introduce gasified raw material in vapourizing furnace;
Described gasification nozzle comprises from the inside to the outside coaxial sheathed priming bar, igniter fuel gas pipe core, interior oxygen endless tube, coal water slurry endless tube, Sweet natural gas endless tube, outer oxygen endless tube and cooling endless tube successively; Described igniter fuel gas pipe core top is provided with fuel gas import, bottom is provided with fuel gas spout; Described interior oxygen endless tube top is provided with interior oxygen import, bottom is provided with interior oxygen spout; Described coal water slurry endless tube top is provided with coal water slurry import, and described Sweet natural gas endless tube top is provided with Imported gas; Described outer oxygen endless tube top is provided with outer oxygen import, bottom is provided with outer oxygen spout; On described cooling endless tube, be provided with cooling medium inlet and heat-eliminating medium outlet;
Also comprise coal water slurry-Sweet natural gas hybrid chamber, be positioned at described outer oxygen endless tube, by the lower end of described coal water slurry endless tube, extended to form downwards, described coal water slurry-Sweet natural gas hybrid chamber bottom is provided with mixture spout; The lower end of described Sweet natural gas endless tube is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber, on described coal water slurry-Sweet natural gas hybrid chamber, be provided with Sweet natural gas spout, described Sweet natural gas endless tube is connected with described coal water slurry-Sweet natural gas hybrid chamber inside by described Sweet natural gas spout.
Described coal water slurry-Sweet natural gas hybrid chamber is positioned at described Sweet natural gas endless tube, and the lower end of described Sweet natural gas endless tube is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber bottom; Described mixture spout is arranged on the bottom of described coal water slurry-Sweet natural gas hybrid chamber.
Described coal water slurry-Sweet natural gas hybrid chamber is comprised of the reducing at two and the tubular structure at middle part, and the described reducing on top is gradually wealthy from top to bottom, the described reducing convergent from top to bottom of bottom; The top of described coal water slurry-Sweet natural gas hybrid chamber and middle part are respectively arranged with multiple described Sweet natural gas spouts, the even circumferential setting that described in multiple described gas spraying opening's edges, coal water slurry-Sweet natural gas hybrid chamber sidewall becomes, the axle of multiple described Sweet natural gas spouts is not or not the footpath of described coal water slurry-Sweet natural gas hybrid chamber circumference that sidewall becomes upwards.
Multiple described Sweet natural gas spouts all along clockwise direction or all tilt in the counterclockwise direction, and the angle that radially becomes 5-85 ° of the axle of multiple described Sweet natural gas spouts and described coal water slurry-Sweet natural gas hybrid chamber circumference that sidewall becomes.
Described coal water slurry import is arranged on the upper end of described coal water slurry endless tube, and described Imported gas is arranged on the upper end of described Sweet natural gas endless tube; Described fuel gas import is arranged on the upper end of described igniter fuel gas pipe core, and described fuel gas spout is arranged on the bottom of described igniter fuel gas pipe core; Described interior oxygen import is arranged on the upper end of described interior oxygen endless tube, and described interior oxygen spout is arranged on the bottom of described interior oxygen endless tube; Described outer oxygen import is arranged on the upper end of described outer oxygen endless tube, and described outer oxygen spout is arranged on the bottom of described outer oxygen endless tube; The outlet of described cooling medium inlet and heat-eliminating medium is arranged on the upper end of described cooling endless tube, and described cooling medium inlet and heat-eliminating medium outlet are distributed in the both sides of gasification nozzle central shaft.
Described fuel gas spout and interior oxygen spout are higher than described mixture spout.
Described flue, chilling ring, annular seal-water tank, guide shell and baffling cylinder and described furnace shell coaxially arrange, described flue, chilling ring and guide shell integrated molding.
The upper and lower end socket of described flue is the cold wall construction of coil tube type, and the sidewall of described flue is the cold wall construction of coil tube type or tube type cold wall construction, between described coil pipe or tubulation, passes through welded seal.
The side towards the fire of described flue is laid with insulating refractory layer.
Described flue is by multiple locating support positioning supports in described furnace shell, and described locating support is located at top and the middle part of described flue, and distributes along the even circumferential of described flue; Between described furnace shell and flue, form insulated cabinet, the inlet mouth communicating with described insulated cabinet is set on described furnace shell.
The utility model has following beneficial effect compared with prior art scheme:
(1) coal water slurry described in the utility model and Sweet natural gas combined vaporizing stove, its gasification nozzle comprises from the inside to the outside coaxial sheathed priming bar, igniter fuel gas pipe core, interior oxygen endless tube, coal water slurry endless tube, Sweet natural gas endless tube, outer oxygen endless tube and cooling endless tube successively; Be arranged in described outer oxygen endless tube, coal water slurry-Sweet natural gas the hybrid chamber being extended to form downwards by the lower end of described coal water slurry endless tube, bottom is provided with mixture spout, and described Sweet natural gas endless tube is connected with coal water slurry-Sweet natural gas hybrid chamber inside by described Sweet natural gas spout.In existing coal water slurry gasification product, the ratio of hydrogen and carbon monoxide is 1:1.5-2, and synthesizing methanol in Modern New Coal Chemical Industry, synthetic wet goods need the ratio of hydrogen and carbon monoxide in raw material to be about 2:1, therefore need to adjust by conversion process the ratio of hydrogen and carbon monoxide in raw material.The application applicant finds after deliberation afterwards, by vapourizing furnace of the present utility model by Sweet natural gas and coal water slurry in coal water slurry-Sweet natural gas hybrid chamber after even mixing, in oxygen endless tube under oxygen effect, mixture is gasified outside.Owing to still remaining a large amount of water vapour after the coal water slurry gasification in mixture, under the effect mixing, Sweet natural gas can react with the remaining water vapour of coal water slurry gasification and generate enough hydrogen, thereby improved the hydrogen richness in gasification product, thereby improved the ratio of hydrogen and carbon monoxide, the gasification product producing can be without conversion directly as methyl alcohol, the raw material of synthetic wet goods product, and, Sweet natural gas and coal water slurry combined vaporizing have improved the cold gas efficiency of gasification greatly, avoided in prior art coal water slurry gasification cold gas efficiency low, in product, the ratio of carbon monoxide and hydrogen is too high, need to reduce its ratio by conversion process, conversion process had both improved process complexity, also a large amount of CO have been caused
2gas purging, although applicant attempts to overcome above-mentioned shortcoming by adjusting gasified raw material kind, existing gasification furnace structure cannot meet the problem of its requirement.
Have again, by the priming bar being located in igniter fuel gas pipe core, can realize carrying out continuously of coal water slurry igniting and gasification, without changing nozzle, the security that has improved production efficiency and equipment.
(2) coal water slurry described in the utility model and Sweet natural gas combined vaporizing stove, coal water slurry-Sweet natural gas hybrid chamber of its gasification nozzle is comprised of the reducing at two and the tubular structure at middle part, the described reducing on top is gradually wealthy from top to bottom, the described reducing convergent from top to bottom of bottom.After coal water slurry and Sweet natural gas enter in coal water slurry-Sweet natural gas hybrid chamber by the reducing on top, velocity of flow reduces, coal water slurry and Sweet natural gas mix fully, then mixture is sprayed at a high speed by mixture spout through hybrid chamber bottom reducing, atomization, and clash into again and atomization with high speed oxygen, carry out high-temperature gasification with oxygen, coal water slurry-Sweet natural gas hybrid chamber of this structure has improved mixing of coal water slurry and Sweet natural gas, atomizing effect, improved the cold gas efficiency of gasification, Sweet natural gas can gasify the hydrogen that provides enough more fully, further improved the ratio of hydrogen and carbon monoxide in product, the product that generates can directly be used as the synthetic raw material of follow-up chemical industry.
(3) coal water slurry described in the utility model and Sweet natural gas combined vaporizing stove, the axle of multiple Sweet natural gas spouts of its gasification nozzle is not or not the footpath of described coal water slurry-Sweet natural gas hybrid chamber circumference that sidewall becomes upwards.Because priming bar, igniter fuel gas pipe core and interior oxygen endless tube are all along the axle setting of coal water slurry-Sweet natural gas hybrid chamber, the axle that makes Sweet natural gas spout in the footpath of hybrid chamber sidewall circumference upwards, can not reduce Sweet natural gas the washing away priming bar, igniter fuel gas pipe core and interior oxygen endless tube of high-velocity jet.Preferably multiple described Sweet natural gas spouts all tilt along clockwise direction or all in the counterclockwise direction, and the angle that radially becomes 5-85 ° of the axle of multiple described Sweet natural gas spouts and described coal water slurry-Sweet natural gas hybrid chamber circumference that sidewall becomes.The Sweet natural gas that can almost avoid high-velocity jet washes away priming bar, igniter fuel gas pipe core and interior oxygen endless tube, thereby extends the work-ing life of gasification nozzle; And, in the gasification nozzle arranging like this, after Sweet natural gas ejection, can not slow down because washing away interior oxygen endless tube tube wall, thereby can in coal water slurry-Sweet natural gas hybrid chamber, form eddy flow, improved the mixed effect of Sweet natural gas and coal water slurry.
Accompanying drawing explanation
For content of the present utility model is more easily understood, the utility model is further detailed content of the present utility model with embodiment by reference to the accompanying drawings;
Fig. 1 is the structural representation of coal water slurry described in the utility model and Sweet natural gas combined vaporizing stove;
Fig. 2 is the structural representation of gasification nozzle in coal water slurry described in the utility model and Sweet natural gas combined vaporizing stove;
Fig. 3 is gasification nozzle in coal water slurry described in the utility model and the Sweet natural gas combined vaporizing stove sectional view along A-A;
Wherein Reference numeral is: 1-priming bar, 2-igniter fuel gas pipe core, oxygen endless tube in 3-, 4-coal water slurry endless tube, 5-Sweet natural gas endless tube, the outer oxygen endless tube of 6-, the cooling endless tube of 7-, the import of 8-fuel gas, 9-fuel gas spout, oxygen import in 10-, oxygen spout in 11-, the import of 12-coal water slurry, 13-Imported gas, the outer oxygen import of 14-, the outer oxygen spout of 15-, 16-cooling medium inlet, the outlet of 17-heat-eliminating medium, 18-coal water slurry spout, 19-Sweet natural gas spout, 20-mixture spout, 21-coal water slurry-Sweet natural gas hybrid chamber, 22-furnace shell, 23-flue, 24-chilling ring, 25-guide shell, 26-baffling cylinder, 27-annular seal-water tank, the import of 28-gasified raw material, the outlet of 29-raw gas, 30-slag notch, 31-gasification nozzle, 32-locating support, 33-inlet mouth.
Embodiment
Embodiment 1
Coal water slurry described in the utility model and Sweet natural gas are combined the vapourizing furnace of use, comprise furnace shell 22, and in the present embodiment, described furnace shell 22 is cylindrical; Flue 23, chilling ring 24 and guide shell 25, be connected in successively from top to bottom in described furnace shell 22, in the present embodiment, described flue 23, chilling ring 24, annular seal-water tank 27, guide shell 25 and baffling cylinder 26 coaxially arrange with described furnace shell 22, described flue 23 is cylindrical, described flue 23, chilling ring 24 and the integrated molding structure of guide shell 25, the upper and lower end socket of described flue 23 is the cold wall construction of coil tube type, the sidewall of described flue 23 is the cold wall construction of coil tube type or tube type cold wall construction, between described coil pipe or tubulation, passes through welded seal; Baffling cylinder 26, part is set in the outside of described guide shell 25, is positioned at the below of described chilling ring 24; Annular seal-water tank 27, is arranged between described furnace shell 22 and guide shell 25, and in the present embodiment, described water sealed tank part is between described furnace shell 22 and guide shell 25, and remainder is between described furnace shell 22 and baffling cylinder 26; Gasified raw material import 28, is arranged at the top of described furnace shell 22, is connected with described flue 23 inside; Raw gas outlet 29, is arranged on furnace shell 22 sidewalls of described water sealed tank below; Slag notch 30, is arranged at the bottom of described furnace shell 22; Gasification nozzle 31, suitable with described gasified raw material import 28, for introduce gasified raw material in vapourizing furnace;
Described gasification nozzle 31 comprises from the inside to the outside coaxial sheathed priming bar 1, igniter fuel gas pipe core 2, interior oxygen endless tube 3, coal water slurry endless tube 4, Sweet natural gas endless tube 5, outer oxygen endless tube 6 and cooling endless tube 7 successively; Described igniter fuel gas pipe core 2 tops are provided with fuel gas import 8, bottom is provided with fuel gas spout 9, in the present embodiment, described fuel gas import 8 is arranged on the upper end of described igniter fuel gas pipe core 2, and described fuel gas spout 9 is arranged on the bottom of described igniter fuel gas pipe core 2; Described interior oxygen endless tube 3 tops are provided with interior oxygen import 10, bottom is provided with interior oxygen spout 11, and in the present embodiment, described interior oxygen import 10 is arranged on the upper end of described interior oxygen endless tube 3, and described interior oxygen spout 11 is arranged on the bottom of described interior oxygen endless tube 3; Described coal water slurry endless tube 4 tops are provided with coal water slurry import 12, described Sweet natural gas endless tube 5 tops are provided with Imported gas 13, in the present embodiment, described coal water slurry import 12 is arranged on the upper end of described coal water slurry endless tube 4, and described Imported gas 13 is arranged on the upper end of described Sweet natural gas endless tube 5; Described outer oxygen endless tube 6 tops are provided with outer oxygen import 14, bottom is provided with outer oxygen spout 15, and in the present embodiment, described outer oxygen import 14 is arranged on the upper end of described outer oxygen endless tube 6, and described outer oxygen spout 15 is arranged on the bottom of described outer oxygen endless tube 6; On described cooling endless tube 7, be provided with cooling medium inlet 16 and heat-eliminating medium outlet 17, in the present embodiment, described cooling medium inlet 16 and heat-eliminating medium outlet 17 is arranged on the upper end of described cooling endless tube 7, and described cooling medium inlet 16 and heat-eliminating medium outlet 17 are distributed in the both sides of gasification nozzle 31 central shafts;
Coal water slurry-Sweet natural gas hybrid chamber 21, is positioned at described outer oxygen endless tube 6, by the lower end of described coal water slurry endless tube 4, is extended to form downwards, and described coal water slurry-Sweet natural gas hybrid chamber 21 bottoms are provided with mixture spout 20; The lower end of described Sweet natural gas endless tube 5 is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber 21, on described coal water slurry-Sweet natural gas hybrid chamber 21, be provided with Sweet natural gas spout 19, described Sweet natural gas endless tube 5 is connected with described coal water slurry-Sweet natural gas hybrid chamber 21 inside by described Sweet natural gas spout 19, and described coal water slurry endless tube 4 is connected with described coal water slurry-Sweet natural gas hybrid chamber 21 inside by coal water slurry spout 18; in the present embodiment, the lower end of described coal water slurry endless tube 4 extends to form the described coal water slurry-Sweet natural gas hybrid chamber 21 that is positioned at described Sweet natural gas endless tube 5 downwards, and the lower end of described Sweet natural gas endless tube 5 is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber 21 bottoms, described mixture spout 20 is arranged on the bottom of described coal water slurry-Sweet natural gas hybrid chamber 21, described coal water slurry-Sweet natural gas hybrid chamber 21 is comprised of the reducing at two and the tubular structure at middle part, the described reducing on top is gradually wealthy from top to bottom, the described reducing convergent from top to bottom of bottom, described coal water slurry endless tube 4 is connected the place of communicating for coal water slurry spout 18 with coal water slurry-Sweet natural gas hybrid chamber 21, the top of described coal water slurry-Sweet natural gas hybrid chamber 21 and middle part are respectively arranged with multiple described Sweet natural gas spouts 19, the even circumferential setting that multiple described Sweet natural gas spouts 19 become along described coal water slurry-Sweet natural gas hybrid chamber 21 sidewalls, the axle of multiple described Sweet natural gas spouts 19 is not or not the footpath of described coal water slurry-Sweet natural gas hybrid chamber 21 circumference that sidewall becomes upwards.
The use procedure of above-mentioned vapourizing furnace, first gasification nozzle 31 is installed on described vapourizing furnace, to gasification nozzle 31 igniter fuel gas pipe cores 2, pass into fuel gas, interior oxygen endless tube 3 passes into oxygen in proportion to be mixed at interior oxygen spout 11 places with fuel gas, by priming bar 1, lighted, other passage passes into a small amount of nitrogen as protection gas simultaneously, after flameholding, cut off nitrogen filled protection gas, pass into respectively coal water slurry and Sweet natural gas to coal water slurry endless tube 4 and Sweet natural gas endless tube 5, in outer oxygen endless tube 6, pass into oxygen, after Sweet natural gas mixes in coal water slurry-Sweet natural gas hybrid chamber 21 with coal water slurry, through mixture spout 20, mixture is sprayed at a high speed, under the oxygen air curtain effect of oxygen endless tube 6 outside of the coal water slurry-natural gas mixture of ejection, lighted at a high speed, enter in the flue 23 of vapourizing furnace and gasify, because the remaining water vapour of Sweet natural gas and coal water slurry gasification reacts the hydrogen that can provide enough, therefore improved the ratio of hydrogen and carbon monoxide in gasification product, the cold gas efficiency of gasification improves simultaneously, the consumption of vaporized chemical oxygen reduces greatly, product after gasification enters successively and in chilling ring 24, guide shell 25 and baffling cylinder 26, carries out coolingly, and the raw gas of generation is collected through raw gas outlet 29, and condensed residue is discharged through slag notch 30.
On the basis of above-described embodiment, in order to reduce the interior high speed Sweet natural gas of gasification nozzle 31 washing away the interior oxygen endless tube 3 of gasification nozzle 31, as Figure 1-3, preferably multiple described Sweet natural gas spouts 19 all tilt along clockwise direction or all in the counterclockwise direction, in the present embodiment, multiple described Sweet natural gas spouts 19 all tilt in the counterclockwise direction; The angle that radially becomes 5-85 ° of the axle of multiple described Sweet natural gas spouts 19 and described coal water slurry-Sweet natural gas hybrid chamber 21 circumference that sidewall becomes, thereby form eddy flow at coal water slurry-Sweet natural gas hybrid chamber 21, improve the mixed effect of coal water slurry and Sweet natural gas, and then improved the processing efficiency of coal water slurry.In order to put in time the mixture that combusting coal water slurry and Sweet natural gas form, described fuel gas spout 9 and interior oxygen spout 11 are higher than described mixture spout 20;
The side towards the fire of described flue 23 is laid with insulating refractory layer.Described flue 23 by multiple locating support 32 positioning supports in described furnace shell 22, described locating support 32 is located at top and the middle part of described flue 23, and the even circumferential along described flue 23 distributes, the locating support 32 on top is for supporting described flue 23, and the locating support 32 at middle part is for locating the position of flue 23; Between described furnace shell 22 and flue 23, form insulated cabinet, the inlet mouth 33 communicating with described insulated cabinet is set on described furnace shell 22.
Comparative example
The gasification nozzle in embodiment 2 31 is replaced with to the compound burner of the coal water slurry gasification in Chinese patent literature CN202509052U.
Test case
With the vapourizing furnace in embodiment 1, embodiment 2 and comparative example, coal water slurry is gasified respectively, gasification the results are shown in following table.
The long-flame coal that 1-embodiment 1,2 is used with comparative example is identical;
2-CO
2discharge only refer to gasification produce coal gas through conversion process, produce the quantity discharged in synthetic gas (raw material of synthesizing methanol and synthetic oil) process.
Test data by upper table is known, adopts gasification nozzle 31 described in the utility model by after Sweet natural gas and coal water slurry combined vaporizing, can greatly improve the ratio of hydrogen and carbon monoxide, reduces than oxygen consumption, reduces the CO of follow-up synthetic oil and methanol synthetizing technology
2quantity discharged; In comparative example and embodiment 1, H
2/ CO brings up to 1.44 than by 0.76 of comparative example, the 377Nm than oxygen consumption by comparative example
3/ 1000Nm
3(CO+H
2) be reduced to 291Nm
3/ 1000Nm
3(CO+H
2), the coal gas of embodiment 1 compares ratio product per ton during for the synthesis of oil can reduce CO
2discharge 2.86 tons, the coal gas of embodiment 1 compares ratio product per ton during for the synthesis of methyl alcohol can reduce CO
2discharge 1.25 tons.
Although the utility model has carried out detailed elaboration by above-mentioned specific embodiment to it; but; those skilled in the art should be understood that; the any form that does not exceed claim protection domain made on this basis and the variation of details, all belong to the claimed scope of the utility model.
Claims (10)
1. coal water slurry and a Sweet natural gas combined vaporizing stove, comprise
Furnace shell (22);
Flue (23), chilling ring (24) and guide shell (25), be connected in described furnace shell (22) from top to bottom successively;
Baffling cylinder (26), part is set in the outside of described guide shell (25), is positioned at the below of described chilling ring (24);
Annular seal-water tank (27), is arranged between described furnace shell (22) and guide shell (25);
Gasified raw material import (28), is arranged at the top of described furnace shell (22), is connected with described flue (23) inside;
Raw gas outlet (29), is arranged on furnace shell (22) sidewall of described water sealed tank below;
Slag notch (30), is arranged at the bottom of described furnace shell (22);
Gasification nozzle (31), suitable with described gasified raw material import (28), for introduce gasified raw material in vapourizing furnace;
It is characterized in that,
Described gasification nozzle (31) comprises from the inside to the outside coaxial sheathed priming bar (1), igniter fuel gas pipe core (2), interior oxygen endless tube (3), coal water slurry endless tube (4), Sweet natural gas endless tube (5), outer oxygen endless tube (6) and cooling endless tube (7) successively; Described igniter fuel gas pipe core (2) top is provided with fuel gas import (8), bottom is provided with fuel gas spout (9); Described interior oxygen endless tube (3) top is provided with interior oxygen import (10), bottom is provided with interior oxygen spout (11); Described coal water slurry endless tube (4) top is provided with coal water slurry import (12), and described Sweet natural gas endless tube (5) top is provided with Imported gas (13); Described outer oxygen endless tube (6) top is provided with outer oxygen import (14), bottom is provided with outer oxygen spout (15); On described cooling endless tube (7), be provided with cooling medium inlet (16) and heat-eliminating medium outlet (17);
Also comprise coal water slurry-Sweet natural gas hybrid chamber (21), be positioned at described outer oxygen endless tube (6), by the lower end of described coal water slurry endless tube (4), extended to form downwards, described coal water slurry-Sweet natural gas hybrid chamber (21) bottom is provided with mixture spout (20); The lower end of described Sweet natural gas endless tube (5) is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber (21), on described coal water slurry-Sweet natural gas hybrid chamber (21), be provided with Sweet natural gas spout (19), described Sweet natural gas endless tube (5) is connected with described coal water slurry-Sweet natural gas hybrid chamber (21) inside by described Sweet natural gas spout (19).
2. vapourizing furnace according to claim 1, it is characterized in that, described coal water slurry-Sweet natural gas hybrid chamber (21) is positioned at described Sweet natural gas endless tube (5), and the lower end of described Sweet natural gas endless tube (5) is connected with the outer wall of described coal water slurry-Sweet natural gas hybrid chamber (21) bottom; Described mixture spout (20) is arranged on the bottom of described coal water slurry-Sweet natural gas hybrid chamber (21).
3. vapourizing furnace according to claim 1 and 2, it is characterized in that, described coal water slurry-Sweet natural gas hybrid chamber (21) is comprised of the reducing at two and the tubular structure at middle part, and the described reducing on top is gradually wealthy from top to bottom, the described reducing convergent from top to bottom of bottom; The top of described coal water slurry-Sweet natural gas hybrid chamber (21) and middle part are respectively arranged with multiple described Sweet natural gas spouts (19), the even circumferential setting that multiple described Sweet natural gas spouts (19) become along described coal water slurry-Sweet natural gas hybrid chamber (21) sidewall, the axle of multiple described Sweet natural gas spouts (19) is not or not the footpath of described coal water slurry-Sweet natural gas hybrid chamber (21) circumference that sidewall becomes upwards.
4. vapourizing furnace according to claim 3, it is characterized in that, multiple described Sweet natural gas spouts (19) all along clockwise direction or all tilt in the counterclockwise direction, and the angle that radially becomes 5-85 ° of the axle of multiple described Sweet natural gas spouts (19) and described coal water slurry-Sweet natural gas hybrid chamber (21) circumference that sidewall becomes.
5. according to the vapourizing furnace described in claim 1 or 2 or 4, it is characterized in that, described coal water slurry import (12) is arranged on the upper end of described coal water slurry endless tube (4), and described Imported gas (13) is arranged on the upper end of described Sweet natural gas endless tube (5); Described fuel gas import (8) is arranged on the upper end of described igniter fuel gas pipe core (2), and described fuel gas spout (9) is arranged on the bottom of described igniter fuel gas pipe core (2); Described interior oxygen import (10) is arranged on the upper end of described interior oxygen endless tube (3), and described interior oxygen spout (11) is arranged on the bottom of described interior oxygen endless tube (3); Described outer oxygen import (14) is arranged on the upper end of described outer oxygen endless tube (6), and described outer oxygen spout (15) is arranged on the bottom of described outer oxygen endless tube (6); Described cooling medium inlet (16) and heat-eliminating medium outlet (17) is arranged on the upper end of described cooling endless tube (7), and described cooling medium inlet (16) and heat-eliminating medium export (17) and be distributed in the both sides of gasification nozzle (31) central shaft.
6. vapourizing furnace according to claim 5, is characterized in that, described fuel gas spout (9) and interior oxygen spout (11) are higher than described mixture spout (20).
7. according to the vapourizing furnace described in claim 1 or 2 or 4 or 6, it is characterized in that, described flue (23), chilling ring (24), annular seal-water tank (27), guide shell (25) and baffling cylinder (26) coaxially arrange with described furnace shell (22), described flue (23), chilling ring (24) and guide shell (25) integrated molding.
8. vapourizing furnace according to claim 7, it is characterized in that, the upper and lower end socket of described flue (23) is the cold wall construction of coil tube type, and the sidewall of described flue (23) is the cold wall construction of coil tube type or tube type cold wall construction, between described coil pipe or tubulation, passes through welded seal.
9. according to the vapourizing furnace described in claim 1 or 2 or 4 or 6 or 8, it is characterized in that, the side towards the fire of described flue (23) is laid with insulating refractory layer.
10. vapourizing furnace according to claim 9, it is characterized in that, described flue (23) by multiple locating supports (32) positioning supports in described furnace shell (22), described locating support (32) is located at top and the middle part of described flue (23), and distributes along the even circumferential of described flue (23); Between described furnace shell (22) and flue (23), form insulated cabinet, the upper inlet mouth (33) communicating with described insulated cabinet that arranges of described furnace shell (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653137.8U CN203559025U (en) | 2013-10-22 | 2013-10-22 | Water-coal-slurry and natural gas combined gasification furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653137.8U CN203559025U (en) | 2013-10-22 | 2013-10-22 | Water-coal-slurry and natural gas combined gasification furnace |
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| Publication Number | Publication Date |
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| CN203559025U true CN203559025U (en) | 2014-04-23 |
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| CN201320653137.8U Withdrawn - After Issue CN203559025U (en) | 2013-10-22 | 2013-10-22 | Water-coal-slurry and natural gas combined gasification furnace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449862A (en) * | 2014-12-05 | 2015-03-25 | 三一集团有限公司 | Gasification furnace and chilling device thereof |
| CN104560210A (en) * | 2015-01-19 | 2015-04-29 | 清华大学 | Coal water slurry atomizing nozzle and gasification furnace with same |
| CN104611065A (en) * | 2015-01-14 | 2015-05-13 | 清华大学 | Double-swirling pulverized coal spray nozzle for dry powder gasifier |
| CN104560205B (en) * | 2013-10-22 | 2017-05-03 | 任相坤 | Water-coal slurry and natural gas combined gasifier |
| CN108410517A (en) * | 2017-02-09 | 2018-08-17 | 通用电气公司 | Gasify chilling train |
-
2013
- 2013-10-22 CN CN201320653137.8U patent/CN203559025U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104560205B (en) * | 2013-10-22 | 2017-05-03 | 任相坤 | Water-coal slurry and natural gas combined gasifier |
| CN104449862A (en) * | 2014-12-05 | 2015-03-25 | 三一集团有限公司 | Gasification furnace and chilling device thereof |
| CN104611065A (en) * | 2015-01-14 | 2015-05-13 | 清华大学 | Double-swirling pulverized coal spray nozzle for dry powder gasifier |
| CN104560210A (en) * | 2015-01-19 | 2015-04-29 | 清华大学 | Coal water slurry atomizing nozzle and gasification furnace with same |
| CN108410517A (en) * | 2017-02-09 | 2018-08-17 | 通用电气公司 | Gasify chilling train |
| CN108410517B (en) * | 2017-02-09 | 2021-10-15 | 气体产品与化学公司 | Gasification quench system |
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