CN103642531B - Cross blowback device of shell coal gasifier and fabrication method thereof - Google Patents

Cross blowback device of shell coal gasifier and fabrication method thereof Download PDF

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Publication number
CN103642531B
CN103642531B CN201310631891.6A CN201310631891A CN103642531B CN 103642531 B CN103642531 B CN 103642531B CN 201310631891 A CN201310631891 A CN 201310631891A CN 103642531 B CN103642531 B CN 103642531B
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hole
round steel
shower nozzle
blind hole
blowback
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CN103642531A (en
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李兆胜
杨文龙
黄湛
韦伟
杨剑生
余志焰
廖银泉
覃飞
蒋新
邓菁
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LIUZHOU CHEMICAL INDUSTRY Co Ltd
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LIUZHOU CHEMICAL INDUSTRY Co Ltd
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Abstract

The invention relates to a cross blowback device of a shell coal gasifier and a fabrication method thereof. The blowback device comprises a blowback air inlet header pipe and at least four groups of blowing nozzles I, wherein the blowing nozzles I are respectively arranged on a cross hanger, and respectively communicated with the blowback air inlet header pipe; each blowing nozzle I is a heat-resisting nozzle fabricated by rolled steel 310S, and comprises a cylindrical nozzle body; a center through hole is formed on the cylindrical nozzle body along the axial center; a circumferential hole penetrating through the center through hole is formed on each cylindrical nozzle body in a radial manner; an inclined hole I penetrating through the center through hole is also formed on each cylindrical nozzle body. The nozzle disclosed by the invention is prepared from solid round steel in a manner of tapping at the corresponding position, can resist high temperature, and does not need to be cooled by water in a use procedure, and meanwhile, the problem that the blowback air hole is easily blocked, so that the blowback device loses efficacy in blowback is solved.

Description

Shell Coal Gasification stove cross blowback device and preparation method
Technical field
The present invention relates to a kind of blowback device and preparation method, particularly the novel blowback device of a kind of Shell Coal Gasification stove cross and preparation method.
Background technology
The import of Shell Coal Gasification stove superheat section is four layers of concentric ring tubular construction, center blocked by innermost layer center cover plate, gas is not allowed directly to pass through from center, but by between the concentric endless tube of every layer, at right angle setting, be support with cross suspension bracket, and flying dust can be accumulated on cross suspension bracket, the import of final blocking superheat section, so must install flying dust blowing-down device, the flying dust blowing-down device of current use is the cross soot blower of band water-cooled, as Figure 1-Figure 2.From service condition, there is following problem:
1, this soot blower forms the dead band of blowing down at the import and export of cooling water pipe, and purge gas cannot blow to, and easily causes the accumulation of flying dust, particularly in the place that gas flow rate is low.
2, this soot blower is not provided with at the lower cover plate place of cross suspension bracket and blows grey point, and flying dust is on the cover board accumulated, and finally blocks import.
3, this soot blower uses water-cooled, and after having grown service time, gas causes leakage to washing away of water pipe, has influence on the operation of whole coal gasifier.
4, this soot blower manufactures, installs complexity, and workload is large.
5, the blowback air pore volume of this soot blower easily blocks, and the blowback of blowback device was lost efficacy.
Summary of the invention
The technical problem to be solved in the present invention is: provide one not need by water-cooled cross blowback device Shell Coal Gasification stove cross blowback device and preparation method, this shower nozzle solves former blowback device shower nozzle blowback air pore volume simultaneously and easily blocks, make the problem that the blowback of blowback device was lost efficacy, avoid because the blocking of gasification furnace superheat section dust stratification causes system shutdown, to ensure that gasification furnace long-term stability is run.
The technical scheme solved the problems of the technologies described above is: a kind of Shell Coal Gasification stove cross blowback device, comprise blowback air intake header and blow grey shower nozzle I with at least 4 groups laid respectively on cross suspension bracket, blow grey shower nozzle I to be communicated with blowback air intake header respectively, the described grey shower nozzle I that blows is the high temperature resistant shower nozzle adopting steel 310S to make, the described grey shower nozzle I that blows comprises cylindrical head body, described cylindrical head body axial centre has a central through hole, described cylindrical head body radial direction has the circumferential aperture through with central through hole, described cylindrical head body also has the inclined hole I through with central through hole.
It is described that to blow 1-4 the circumferential aperture being positioned at same circumference with center line in grey shower nozzle I be one group, in cylindrical head body, circumferential aperture N group is set, the value of N is 1-30, described inclined hole I quantity is M, the value of M is 1-10, the angle α of described inclined hole I center line and cylindrical head body axis is 35-60 °, and in same group of described circumference aperture, the circumferential distance β of adjacent 2 circumferential apertures is 40-60 °.
The described length L1 blowing the cylindrical head body of grey shower nozzle I is 75-300mm, the diameter D1 of described cylindrical head body is 30-70mm, the diameter D2 of described central through hole is 6-18mm, described inclined hole I and the diameter of circumferential aperture are 3-6mm, described circumferential aperture is one group with 3, and the distance L2 between adjacent 2 groups of circumference apertures is 3-8mm.
Described inclined hole I center line blowing grey shower nozzle I and the angle α of cylindrical head body axis are 37 °, distance L2 between described adjacent 2 groups of circumference apertures is 4mm, in same group 3 circumferential apertures, the circumferential distance β of adjacent 2 circumferential apertures is 45 °, and described inclined hole I and the diameter of circumferential aperture are 3.5mm; The length L1 of described cylindrical head body is 80mm, and the diameter D1 of cylindrical head body is 30mm, and the diameter D2 of described central through hole is 8mm.
This blowback device be also provided be positioned at that employing steel 310S above cross suspension bracket lower cover plate makes blow grey shower nozzle II, blow grey shower nozzle II to be communicated with blowback air intake header, the described grey shower nozzle II that blows comprises tubaeform head body, described tubaeform head body has blind hole, on tubaeform head body sidewall, uniform circumference is provided with the individual inclined hole II through with blind hole of X, the center line of inclined hole II and the angle γ of blind hole center line are the value of 20-50 °, X is 4-30.
The diameter of described inclined hole II is 3-6mm, and the diameter D4 of described blind hole is 30-40mm, and the height of described tubaeform head body is 100-250mm, and outside diameter D3 is 50-80mm, end diameter 1-2mm larger than blind hole diameter.
The described grey shower nozzle I that blows is arranged horizontally, and described blows grey shower nozzle II for vertically arranging.
Another technical scheme of the present invention is: a kind of preparation method of Shell Coal Gasification stove cross blowback device, comprises the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, get length 75-300mm, ¢ 30-70mm material is 310S round steel, bores the central through hole of a ¢ 6-18mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3-6mm inclined hole I that M is through with central through hole, inclined hole I center line and central through hole centerlines α are the value of 35-60 °, M is 1-10;
A3, radial direction are spudded in the circumferential aperture of N group and the through ¢ 3-6mm of central through hole, the quantity often organizing circumferential aperture is 1-4, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 40-60 °, and the center line with the circumferential aperture of group is positioned at circumferentially same, and the value of N is 1-30;
B, blow the making of grey shower nozzle II, step is as follows:
B1, get length 100-250mm, ¢ 50-80mm material is 310S round steel, bores the blind hole of a ¢ 30-40mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3-6mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are the value of 20-50 °, X is that 4-30 is individual;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
Further technical scheme of the present invention is: a kind of preparation method of Shell Coal Gasification stove cross blowback device, comprises the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, get length 80mm, ¢ 30mm material is 310S round steel, bores the central through hole of a ¢ 8mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3.5mm inclined hole I that M is through with central through hole, inclined hole I center line and central through hole centerlines α are 37 °, and the value of M is 1-10;
A3, radial direction are spudded in the circumferential aperture of N group and the through ¢ 3.5mm of central through hole, the quantity often organizing circumferential aperture is 3, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 45 °, and the center line with the circumferential aperture of group is positioned at circumferentially same, and the value of N is 1-15;
B, blow the making of grey shower nozzle II, step is as follows:
B1, get length 150mm, ¢ 56mm material is 310S round steel, bores the blind hole of a ¢ 38mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3.5mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are 26 °, and the value of X is 12;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
The described grey shower nozzle I that blows is arranged horizontally, and described blows grey shower nozzle II for vertically arranging.
Owing to adopting above technical scheme, the beneficial effect that a kind of Shell Coal Gasification stove cross blowback device of the present invention and preparation method have is: there is not the dead band that flying dust blows down, the top blowing flying dust effect of cross suspension bracket is better, adds the ash that blows on cover plate, avoids the dust stratification on cover plate; Because blowback hole is all horizontal direction, blowback hole can not block; Eliminate water-cooling structure, make, install simply.Preparation method of the present invention has that technique is simple, processing ease, be convenient to the advantages such as enforcement.
The present invention blows the technique effect that grey shower nozzle has following excellent benefit:
1. high temperature resistant, use procedure does not need to use water cooling.Shower nozzle of the present invention adopts solid 310S material round steel, by preparing in the perforate of corresponding position, this shower nozzle under gasification furnace is up to more than 1700 high temperature of spending still within the scope of allowable temperature.Therefore the present invention does not in use need, by water cooling, just not need to arrange cooling water water inlet pipe and water outlet pipe, simplify structure and the installation process of blowback device; Avoid because gas washes away the pipe leakage problem that may cause to water pipe simultaneously.
2. solve existing blowback device shower nozzle blowback air pore volume easily to block, make the problem that the blowback of blowback device was lost efficacy.The present invention blow grey shower nozzle I preferably structure be on circumferential distance circumferential level face, respectively open the circumferential aperture of 1 ¢ 3.5mm with 45 ° and 135 ° of directions, the circumferential aperture of 1 ¢ 3.5mm is opened in horizontal plane 90 ° of directions, become the angle of 37 ° to open 1 ¢ 3.5mm inclined hole I with blowback device center line, the central through hole with above-mentioned 3 circumferential apertures and the through ¢ 8mm of inclined hole I is opened at blowback device center line, namely shower nozzle of the present invention is made up of the perforate of 5 different directions altogether, strong perturbation action is produced to the synthesis gas of its surrounding, purging scope is increased to whole inner space, avoid occurring blowback dead angle, thus reach the object preventing dust stratification.The powder ash that so not only it also avoid device interior directly falls into and blows in grey hole, the problem of blocking blowback pore; Because the ash of molten molten state is once after cooling down, the cinder getting lodged in aperture becomes abnormal hard, even if adopt boring to be also difficult to get through.
Below, in conjunction with the accompanying drawings and embodiments a kind of Shell Coal Gasification stove cross blowback device of the present invention and the technical characteristic of preparation method are further described.
Accompanying drawing explanation
Fig. 1-Fig. 2: existing Shell Coal Gasification stove cross blowback device structural representation.
Fig. 1: top view, Fig. 2: front sectional view.
Fig. 3-Fig. 4: the novel blowback device structural representation of a kind of Shell Coal Gasification stove cross of the present invention.
Fig. 3: top view, Fig. 4: front sectional view.
Fig. 5-Fig. 7: the embodiment of the present invention one blow grey shower nozzle I structural representation.
Fig. 5: left view, the A-A sectional view of Fig. 6: Fig. 5, the B-B sectional view of Fig. 7: Fig. 6.
Fig. 8: the embodiment of the present invention two blow grey shower nozzle I structural representation.
Fig. 9-Figure 10: the present invention blows grey shower nozzle II structural representation.
Fig. 9: front sectional view, the C-C sectional view of Figure 10: Fig. 9.
In Fig. 1-Fig. 2: 11-blowback air intake header, 12-blows grey shower nozzle, 13-superheat section four layers of concentric endless tube, 14-coolant outlet, 15-cooling water inlet, the import of 16-blowback air.
In Fig. 3-Fig. 9: 1-blowback air intake header, 2-blows the cylindrical head body of grey shower nozzle I, 21-, 22-central through hole, 23-inclined hole I, 24-circumference aperture, 241-circumference aperture I, 242-circumference aperture II, 243-circumference aperture III, 3-superheat section four layers of concentric endless tube, 4-blows the tubaeform head body of grey shower nozzle II, 41-, 42-blind hole, 43-inclined hole II, 5-cross suspension bracket, 6-lower cover plate.
In Fig. 6, Fig. 7, Fig. 9, arrow represents airintake direction.
Detailed description of the invention
Embodiment 1: the novel blowback device of a kind of Shell Coal Gasification stove cross, as Figure 3-Figure 4, comprise blowback air intake header 1 and blow grey shower nozzle I 2 with 4 groups of laying respectively on cross suspension bracket, blow grey shower nozzle I to be communicated with blowback air intake header respectively, the described grey shower nozzle I that blows is the high temperature resistant shower nozzle adopting steel 310S to make, the described grey shower nozzle I that blows comprises cylindrical head body 21, described cylindrical head body axial centre has a central through hole 22, described cylindrical head body radial direction has the circumferential aperture 24 of the N group through with central through hole, N=1, 3 the circumferential apertures 24 being positioned at same circumference with center line are one group, in same group 3 circumferential apertures, the circumferential distance β of adjacent 2 circumferential apertures is 45 °.Described cylindrical head body also has the M through with a central through hole inclined hole I 23, M=1, the angle α of described inclined hole I center line and cylindrical head body axis is 35-45 °, and described inclined hole I and the diameter of circumferential aperture are 3-6mm (see Fig. 5-Fig. 7).
This blowback device be also provided be positioned at that employing steel 310S above cross suspension bracket lower cover plate makes blow grey shower nozzle II 4, blow grey shower nozzle II to be communicated with blowback air intake header 1, the described grey shower nozzle II that blows comprises tubaeform head body 41, described tubaeform head body has blind hole 42, on tubaeform head body sidewall, uniform circumference is provided with the individual inclined hole II 43 through with blind hole of X, the center line of inclined hole II and the angle γ of blind hole center line are 26 °, X=12.The diameter of described inclined hole II is 3.5mm, and the diameter D4 of described blind hole is 38mm, and the height H 1 of described tubaeform head body is 150mm, and the D3 of outside diameter is 56 mm, end diameter 1-2mm (see Fig. 9-Figure 10) larger than blind hole diameter.
The described grey shower nozzle I that blows is arranged horizontally, and described blows grey shower nozzle II for vertically arranging.
In embodiment 1, from left view, 3 the circumferential apertures blowing grey shower nozzle I are respectively the circumferential aperture I 241 being positioned at 45 ° of positions, and be positioned at the circumferential aperture II 242 of 90 ° of positions and be positioned at the circumferential aperture III 243 of 135 ° of positions, inclined hole I is also positioned at 90 ° of positions.
Embodiment 2: the novel blowback device of a kind of Shell Coal Gasification stove cross, its basic structure is identical with embodiment 1, difference is the concrete structure blowing grey shower nozzle I, blowing grey shower nozzle I in the present embodiment is the high temperature resistant shower nozzle adopting steel 310S to make, the described grey shower nozzle I that blows comprises cylindrical head body 21, described cylindrical head body axial centre has a central through hole 22, described cylindrical head body radial direction has the circumferential aperture 24 of the N group through with central through hole, N=3, 3 the circumferential apertures 24 being positioned at same circumference with center line are one group, distance L2 between adjacent 2 groups of circumference apertures is 4mm, in same group 3 circumferential apertures, the circumferential distance β of adjacent 2 circumferential apertures is 45 °.Described cylindrical head body also has the M through with a central through hole inclined hole I 23, M=3, the angle α of described inclined hole I center line and cylindrical head body axis is 37 °, and described inclined hole I and the diameter of circumferential aperture are 3.5mm; The length L1 of described cylindrical head body is 80mm, and the diameter D1 of cylindrical head body is 30mm, and the diameter D2 of described central through hole is 8mm.
One as embodiment of the present invention 1-embodiment 2 converts, the described group number N blowing the circumferential aperture that the cylindrical head body of grey shower nozzle I is arranged can determine according to actual conditions, the value of General N is 1-30, be preferably 1-15, often in group, the number of circumferential aperture can be determined as required, and generally individual with 1-4 is 1 group.In same group of circumference aperture, the circumferential distance β of adjacent 2 circumferential apertures can suitably adjust, and is generally 40-60 °, the circumferential distance of adjacent 2 circumferential apertures can equal also can be unequal.Distance L2 between adjacent 2 groups of circumference apertures also can adjust as required, is generally 3-8mm.The size of described cylindrical head body is determined according to needs of production, and the length L1 of general cylindrical head body is 75-300mm, and the diameter D1 of described cylindrical head body is 30-70mm.The diameter D2 of described central through hole also can suitably change, and is generally 6-18mm.The angle α of the number M of described inclined hole I and inclined hole I center line and cylindrical head body axis also can determine according to actual conditions, and the value of general M is 1-10, α is 35-60 °.
As another conversion of embodiment of the present invention 1-embodiment 2, described cylindrical head body outer wall is arranged to stepped, and namely large one end, one end is little, and outside diameter 5-15mm larger than end diameter, inclined hole I and circumferential aperture are positioned at the section of end greatly.
In embodiment of the present invention 1-embodiment 2, the described blind-hole bottom blowing grey shower nozzle II is 10-20mm to the height H 2 of tubaeform head body large end face, is preferably 10mm.The described inclined hole II top center line blowing grey shower nozzle II is 30-50mm to the height H 3 of tubaeform head body large end face, is preferably 37mm.One as embodiment of the present invention 1-embodiment 2 converts, and the number X of the center line of described inclined hole II and the angle γ of blind hole center line and inclined hole II can adjust according to actual conditions, and general γ is the value of 20-50 °, X is 4-30.The described diameter of inclined hole II, the diameter of blind hole and tubaeform head body size all can suitably change as required, the diameter of general inclined hole II is 3-6mm, the diameter of blind hole is 30-40mm, and the height of tubaeform head body is 100-250mm, and outside diameter is 50-80mm.
Embodiment 3: the preparation method of the novel blowback device of a kind of Shell Coal Gasification stove cross, comprises the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, to get ¢ 30-70mm material be 310S round steel, bores the central through hole 22 of a ¢ 6-18mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3-6mm inclined hole I 23 that M is through with central through hole, inclined hole I center line and central through hole centerlines α are the value of 35-60 °, M is 1-10;
A3, radial direction are spudded in the circumferential aperture 24 of N group and the through ¢ 3-6mm of central through hole, the quantity often organizing circumferential aperture is 1-4, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 40-60 °, and the center line with the circumferential aperture of group is positioned at circumferentially same, and the value of N is 1-30;
B, blow the making of grey shower nozzle II, step is as follows:
B1, to get ¢ 50-80mm material be 310S round steel, bores the blind hole of a ¢ 30-40mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3-6mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are the value of 20-50 °, X is that 4-30 is individual;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
Embodiment 4: the preparation method of the novel blowback device of a kind of Shell Coal Gasification stove cross, comprises the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, to get ¢ 30mm material be 310S round steel, bores the central through hole 22 of a ¢ 8mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3.5mm inclined hole I 23 that M is through with central through hole, inclined hole I center line and central through hole centerlines α are 37 °, and the value of M is 1-10;
A3, radial direction are spudded in the circumferential aperture 24 of N group and the through ¢ 3.5mm of central through hole, the quantity often organizing circumferential aperture is 3, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 45 °, and the center line with the circumferential aperture 24 of group is positioned at circumferentially same, and the value of N is 1-15;
B, blow the making of grey shower nozzle II, step is as follows:
B1, to get ¢ 56mm material be 310S round steel, bores the blind hole of a ¢ 38mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3.5mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are 26 °, and the value of X is 12;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole; On sidewall, inclined hole II center line is 37mm to the distance H3 of round steel large end face;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
One as the invention process 3-embodiment 4 converts, steps A 4 is also provided with after steps A 3, steps A 4 is: be processed into stepped by round steel outer surface, is processed into 5-15mm less of other end diameter by round steel one end, and inclined hole I and circumferential aperture are positioned at the large one end of diameter.The described grey shower nozzle I that blows is arranged horizontally, and described blows grey shower nozzle II for vertically arranging.
The novel blowback device structure of improvement cost invention on the Shell Coal Gasification stove cross blowback device basis of existing employing water-cooled, can realize in the following manner: remove original 4 soot blower shower nozzles, respectively add a level in the blowback air exit of original soot blower shower nozzle and blow grey shower nozzle (namely blowing grey shower nozzle I), the dust stratification on cross suspension bracket is blown down in the direction of leaning forward with level.The import and export of former cooling water pipe blocks.Cooling water water inlet pipe and water outlet pipe between gasification furnace internals and shell is connected to form loop, the mistake cause thermal damage of anti-antipriming pipe.Above the lower cover plate of cross suspension bracket, increase by one blow grey shower nozzle (namely blowing grey shower nozzle II).

Claims (3)

1. a preparation method for Shell Coal Gasification stove cross blowback device, is characterized in that: comprise the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, get length 75-300mm, ¢ 30-70mm material is 310S round steel, bores the central through hole (22) of a ¢ 6-18mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3-6mm inclined hole I (23) that M is through with central through hole, inclined hole I center line and central through hole centerlines α are the value of 35-60 °, M is 1-10;
A3, radial direction are spudded in the circumferential aperture (24) of N group and the through ¢ 3-6mm of central through hole, the quantity often organizing circumferential aperture is 1-4, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 40-60 °, center line with the circumferential aperture of group is positioned at circumferentially same, and the value of N is 1-30;
B, blow the making of grey shower nozzle II, step is as follows:
B1, get length 100-250mm, ¢ 50-80mm material is 310S round steel, bores the blind hole of a ¢ 30-40mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3-6mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are the value of 20-50 °, X is that 4-30 is individual;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
2. the preparation method of Shell Coal Gasification stove cross blowback device according to claim 1, is characterized in that: comprise the following steps:
A, blow the making of grey shower nozzle I, step is as follows:
A1, get length 80mm, ¢ 30mm material is 310S round steel, bores the central through hole (22) of a ¢ 8mm in round steel axial centre;
A2, at round steel one end face, bore the ¢ 3.5mm inclined hole I (23) that M is through with central through hole, inclined hole I center line and central through hole centerlines α are 37 °, and the value of M is 1-10;
A3, radial direction are spudded in the circumferential aperture (24) of N group and the through ¢ 3.5mm of central through hole, the quantity often organizing circumferential aperture is 3, in the circumferential aperture of same group, the circumferential distance β of adjacent 2 circumferential apertures is 45 °, center line with the circumferential aperture of group (24) is positioned at circumferentially same, and the value of N is 1-15;
B, blow the making of grey shower nozzle II, step is as follows:
B1, get length 150mm, ¢ 56mm material is 310S round steel, bores the blind hole of a ¢ 38mm in round steel axial centre;
B2, on round steel sidewall, circumferencial direction evenly bores through with the blind hole ¢ 3.5mm inclined hole II of X, and the center line of inclined hole II and the angle γ of blind hole center line are 26 °, and the value of X is 12;
B3, have the half of one end to round steel length of blind hole from round steel, round steel outer wall is processed into horn-like, namely reduces gradually to one end diameter having blind hole in the middle part of round steel, have the diameter 1-2mm larger than blind hole diameter of one end of blind hole;
The connection of C, shower nozzle: first each is blown grey shower nozzle I pipeline and be communicated with blowback air intake header, more grey shower nozzle II pipeline will be blown be communicated with blowback air intake header.
3. the preparation method of Shell Coal Gasification stove cross blowback device according to claim 1 and 2, is characterized in that: the described grey shower nozzle I that blows is arranged horizontally, and described blows grey shower nozzle II for vertically arranging.
CN201310631891.6A 2013-11-29 2013-11-29 Cross blowback device of shell coal gasifier and fabrication method thereof Active CN103642531B (en)

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