CN205199482U - Water -cooling reactor and loading and unloading material structure thereof - Google Patents
Water -cooling reactor and loading and unloading material structure thereof Download PDFInfo
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- CN205199482U CN205199482U CN201520831976.3U CN201520831976U CN205199482U CN 205199482 U CN205199482 U CN 205199482U CN 201520831976 U CN201520831976 U CN 201520831976U CN 205199482 U CN205199482 U CN 205199482U
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Abstract
The utility model relates to a water -cooling reactor and loading and unloading material structure thereof. This water -cooling reactor includes urceolus, footpath back reaction basket, water cooling system, center tube, hydroecium, steam chest and above -mentioned loading and unloading material structure, and back reaction basket in footpath lies in the urceolus, and forms the clearance between footpath back reaction basket and the urceolus, and water cooling system is including the water -cooled tube that stretches into footpath back reaction basket, the water -cooled tube respectively with hydroecium and steam chest intercommunication, in the center tube stretches into footpath back reaction basket, and partial passing footpath back reaction basket stretches out outside the urceolus, loading and unloading machine constructs filling tube and discharge tube including a plurality of interval distribution, the filling tube is followed footpath back reaction basket top is stretched into footpath back reaction basket, the discharge tube is followed stretch out footpath back reaction basket bottom footpath back reaction basket. In this water -cooling reactor because the setting of a plurality of filling tubes that loading and unloading machine constructs, can add footpath back reaction basket uniformly with the catalyst in, make the reaction more abundant.
Description
Technical field
The utility model relates to chemical technology field, particularly relate to a kind of be applied to ammonia synthesis, methanol-fueled CLC produce in water-cooled reactor and dress discharging structure.
Background technology
Methanol-fueled CLC reaction is strong heat release reversible reaction, key reaction formula
CO+2H
2＝CH
3OH+ΔH
R1
CO
2+3H
2＝CH
3OH+H
2O+ΔH
R2
ΔH
R1＝-76519.5-49.2909T----------P132
ΔH
R2＝-37858.2-22.666T-------P132
Reaction carries out in the reactor that catalyst is housed, and modern catalyst for methanol is low-pressure low-temperature Cu-Zn-Al, and its pressure is 4.0MPa ~ 8.5MPa, 210 DEG C ~ 280 DEG C.As from the foregoing, unreacting gas must first be preheated to 210 DEG C, and in course of reaction, thermal discharge is large, and temperature rises large, and such as often react 1%CO temperature rise 32 DEG C, temperature rise can not be too high, should control within 280 DEG C.
The core of methanol synthesizing process technology is the design of methanol synthesis reactor.CO and H
2the reaction of methanol is strong exothermal reaction, with H
2, N
2gas synthesis ammonia compares, generate 1mol methyl alcohol than generation 1mol ammonia liberated heat almost many a times, and the serviceability temperature scope of the Cu-series catalyst of synthesizing methanol only has about 50 DEG C, the Fe-series catalyst serviceability temperature scope of synthetic ammonia has 120 DEG C ~ 150 DEG C, and course of reaction needs to remove reaction heat fast.If the packed catalyst in reactor is uneven, reaction can be caused insufficient.
Utility model content
Based on this, be necessary to provide one can make the uniform water-cooled reactor of packed catalyst and dress discharging structure thereof.
A kind of dress discharging structure being applied to water-cooled reactor, described water-cooled reactor comprises radial reaction basket, described fuel manipulator crane structure comprises multiple charge pipe spaced apart and discharge duct, described charge pipe stretches into described radial direction reaction basket from described radial direction reaction basket top, and described discharge duct stretches out described radial direction reaction basket bottom described radial direction reaction basket.
In the water-cooled reactor comprising above-mentioned dress discharging structure, due to the setting of multiple charge pipe, catalyst can be joined equably in radial reaction basket, make reaction more abundant.
Wherein in an embodiment, the quantity of described discharge duct is multiple, and multiple described discharge duct is spaced apart.
Wherein in an embodiment, described fuel manipulator crane structure also comprises deflector, and described deflector is obliquely installed, and the lower of described deflector is connected with described discharge duct.
Wherein in an embodiment, described deflector is flat board or the conical plate of inclination.
A kind of water-cooled reactor, comprise urceolus, radial reaction basket, water-cooling system, central tube, hydroecium, steam chest and above-mentioned dress discharging structure, described radial direction reaction basket is positioned at described urceolus, and form gap between described radial direction reaction basket and described urceolus, described water-cooling system comprises the water cooling tube stretching into described radial direction reaction basket, described water cooling tube is communicated with described steam chest with described hydroecium respectively, described central tube stretches in described radial direction reaction basket, and partially passes through described radial direction reaction basket and stretch out outside described urceolus.
In above-mentioned water-cooled reactor, due to the setting of multiple charge pipe, catalyst can be joined equably in radial reaction basket, make reaction more abundant.
Wherein in an embodiment, described water-cooled reactor also comprises and is arranged at intervals at lower perforated plate in described urceolus and upper perforated plate, one end of described upper perforated plate and described urceolus keeps at a certain distance away, one in described hydroecium and described steam chest is formed between described urceolus one end and described upper perforated plate, and the another one in described hydroecium and described steam chest is formed between described lower perforated plate and described upper perforated plate; Described charge pipe successively through described upper perforated plate and described lower perforated plate, and stretches into described radial direction reaction basket.
Wherein in an embodiment, described fuel manipulator crane structure also comprises deflector, and described deflector is obliquely installed, and the lower of described deflector is connected with described discharge duct, described discharge duct and described central tube keep at a certain distance away, and higher one end of described deflector is connected to described central tube.
Wherein in an embodiment, described radial direction reaction basket and/or described central tube include cylindrical shell and air permeable plate, described radial direction reaction basket and/or described central tube offer passage, described passage comprises the first passage of through described cylindrical shell and the second passage of through described air permeable plate, described second passage and described first passage are interconnected, and the total sectional area of described second passage is greater than the total cross section of described first passage, the more described air permeable plate of described cylindrical shell of described radial direction reaction basket is near described urceolus, the more described air permeable plate of described cylindrical shell of described central tube reacts the described cylindrical shell of basket away from described radial direction.
Wherein in an embodiment, described first passage of described cylindrical shell comprises open aperture and draws hole in, and described open aperture is greater than described gathering hole, and the more described open aperture in described gathering hole is near described air permeable plate; Described second passage of described air permeable plate comprises hole and lower opening, and the more described lower opening in described upper hole is near described cylindrical shell, and the size in described upper hole is less than described lower opening.
Wherein in an embodiment, described cylindrical shell and described air permeable plate interval arrange thus form gap betwixt, described radial direction reaction basket and/or described central tube also comprise spacer ring, described spacer ring is located between described cylindrical shell and described air permeable plate hermetically, and the described gap length between described cylindrical shell and described air permeable plate is become multiple interval; Described radial direction reaction basket and/or described central tube also comprise screen cloth, and described screen cloth is arranged on the side of described air permeable plate away from described cylindrical shell.
Accompanying drawing explanation
Fig. 1 is the structural representation of the water-cooled reactor of an embodiment;
The partial structurtes schematic diagram of the urceolus that Fig. 2 is the reactor of air cooling shown in Fig. 1 and radial reaction basket;
Fig. 3 is the partial structurtes schematic diagram of the central tube of the reactor of air cooling shown in Fig. 1;
Fig. 4 is the structural representation of the first passage of the central tube of another embodiment.
Detailed description of the invention
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.Term as used herein " vertical ", " level ", "left", "right" and similar statement are just for illustrative purposes.
Refer to Fig. 1, water-cooled reactor 300 comprises urceolus 3001, radial reaction basket 3003, water-cooling system 3005, central tube 3010, hydroecium 3017, steam chest 3019 and dress discharging structure.Radial reaction basket 3003 is positioned at urceolus 3001, and forms gap 3015 between radial reaction basket 3003 and urceolus 3001.Water-cooling system 3005 comprises the water cooling tube 30051 stretching into radial reaction basket 3003, and water cooling tube 30051 is communicated with steam chest 3019 with hydroecium 3017 respectively.Central tube 3010 stretches in radial reaction basket 3003, and partially passes through radial reaction basket 3003 and stretch out outside urceolus 3001.
Urceolus 3001 is provided with the water inlet 3007 be communicated with hydroecium 3017, the first gas port 3009 be communicated with gap 3015, the moisture outlet 3013 that is communicated with steam chest 3019, water inlet 3007 can supply water and enter hydroecium 3017, first gas port 3009 supplied gas can enter urceolus 3001 and radial gap 3015 of reacting between basket 3003, and moisture outlet 3013 can export from steam chest 3019 for steam.
Water cooling tube 30051 comprises interior pipe 30053 and outer tube 30055, interior pipe 30053 is sheathed in outer tube 30055, and interior pipe 30053 is sheathed on the bottom end opening of outer tube 30055, the top of interior pipe 30053 is communicated with hydroecium 3017, and the top of outer tube 30055 is communicated with steam chest 3019.Water in hydroecium 3017 enters interior pipe 30053 by the top of interior pipe 30053, enters outer tube 30055 from the bottom of interior pipe 30053, and water absorbs heat and becomes gas in course of reaction, and steam water interface enters steam chest 3019 from the top of outer tube 30055.
Central tube 3010 can be located at the center of radial reaction basket 3003, offers the second gas port 3011 in one end that it stretches out urceolus 3001.The sidewall that central tube 3010 stretches into the part of radial reaction basket 3003 also offers passage.
Water-cooled reactor 300 also comprises and is arranged at intervals at lower perforated plate 3021 in urceolus 3001 and upper perforated plate 3023, upper perforated plate 3023 keeps at a certain distance away with one end of urceolus 3001, and between urceolus 3001 one end and upper perforated plate 3023, form above-mentioned hydroecium 3017, form above-mentioned steam chest 3019 between lower perforated plate 3021 and upper perforated plate 3023.Wherein, lower perforated plate 3021 is spherical tubesheet, and that is, the shape of lower perforated plate 3021 is hemisphere.Be appreciated that, lower perforated plate 3021 also can be the arc tube sheet of other shapes such as oval tube sheet, butterfly tube sheet or spherical tube sheet, that is, the shape of lower perforated plate 3021 can be the combination of a part for spheroid, a part for spheroid an or spheroid part and a spheroid part.Because lower perforated plate 3021 is arc tube sheet, after it is under pressure, stress state is better, therefore when meeting water-cooled reactor 300 operating pressure, temperature, can design thinner by the thickness of lower perforated plate 3021, can reduce weight of equipment, saves equipment cost.Such as, under 3.4MPa, the design conditions of 240 DEG C, compare the lower perforated plate of flat tube plate, the thickness of spherical tubesheet can thinning 30%, for this large-scale equipment of water-cooled reactor, especially be applied in the super-huge water-cooled reactor that more than 1,800,000 tons methanol synthesis technology adopt, weight and the cost of reduction are considerable.Be appreciated that and also can form above-mentioned steam chest 3019 between urceolus 3001 one end and upper perforated plate 3023, form above-mentioned hydroecium 3017 between lower perforated plate 3021 and upper perforated plate 3023, namely the position of hydroecium 3017 and steam chest 3019 is interchangeable.
Particularly, lower perforated plate 3021 is arranged at the top of radial reaction basket 3003.Visible, the upside of lower perforated plate 3021 is steam chest 3019, and downside is radial reaction basket 3003, and its both sides all need to bear larger air pressure, as can be seen here, and lower perforated plate 3021 stressed extremely important.
Fuel manipulator crane structure comprises multiple charge pipe 3025 spaced apart and discharge duct 3027, and charge pipe 3025 stretches into radial reaction basket 3003 from radial direction reaction basket 3003 top, and discharge duct 3027 stretches out radial reaction basket 3003 bottom radial direction reaction basket 3003.Due to the setting of multiple charge pipe 3025, catalyst can be joined equably in radial reaction basket 3003, make reaction more abundant.
Charge pipe 3025 successively through upper perforated plate 3023 and lower perforated plate 3021, and stretches into radial reaction basket 3003.
The quantity of discharge duct 3027 is multiple, and multiple discharge duct 3027 is spaced apart.
Fuel manipulator crane structure also comprises deflector 3029, and deflector 3029 is obliquely installed, and the lower of deflector 3029 is connected with discharge duct 3027.Radial direction can be reacted the catalyst guiding discharge duct 3027 in basket 3003 by deflector 3029, makes discharging cleaner, avoids catalyst unload unclean at radial direction reaction basket 3003 and remain.
Deflector 3029 can be the flat board of inclination, also can be conical plate.
Discharge duct 3027 and central tube 3010 keep at a certain distance away, and higher one end of deflector 3029 is connected to central tube 3010.
Water-cooled reactor 300 also comprises water supply installation 705, and water supply installation 705 is connected with water inlet 3007.
Moisture outlet 3013 is also connected with water supply installation 705.Particularly, water supply installation 705 can be drum.Water supply installation 705 is also communicated in a vapour-recovery unit (not shown) with recovered steam.Be appreciated that moisture outlet 3013 also can be connected to other equipment.
During work, unreacting gas enters gap 3015 from the first gas port 3009, then the passage through radial reaction basket 3003 sidewall enters radial reaction basket 3003, gas is reaction in radial direction reaction basket 3003 under the effect of catalyst, simultaneously, the heat that reaction produces is cooled by the water cooling tube 30051 of cooling system 3005 and takes away, reacted gas enters central tube 3010 through the passage of central tube 3010, finally export water-cooled reactor 300 from the second gas port 3011 of central tube 3010, complete a circular response process like this.In the process, water inputs hydroecium 3017 from water supply installation 705 through water inlet 3007, then outer tube 30055 is entered after flowing through the interior pipe 30053 of water cooling tube 30051, after absorbing reaction heat, at least part of water becomes steam, enter steam chest 3019 from outer tube 30055, export water supply installation 705 to finally by moisture outlet 3013.
Be appreciated that the path of gas also can be contrary with above-mentioned path, namely unreacting gas also can enter radial reaction basket 3003 after the second gas port 3011 enters central tube 3010, then enters gap 3015, exports water-cooled reactor 300 finally by the first gas port 3009.
Wherein in an embodiment, refer to Fig. 2, radial reaction basket 3003 comprises cylindrical shell 701 and air permeable plate 703, and air permeable plate 703 is sheathed in cylindrical shell 701, and the passage of radial reaction basket 3003 comprises the first passage of through cylindrical shell 701 and the second passage of through air permeable plate 703.Wherein, the second passage and the first passage are interconnected, and the total sectional area of the second passage is greater than the total sectional area of the first passage.When radial direction reaction basket 3003 is arranged at urceolus 3001, comparatively air permeable plate 703 is near urceolus 3001 for the cylindrical shell 701 of radial reaction basket 3003, and cylindrical shell 701 and urceolus 3001 interval arrange thus form aforementioned gap 3015.Because the passage of radial direction reaction basket 3003 comprises the first passage of through cylindrical shell 701 and the second passage of through air permeable plate 703, and the total sectional area of the second passage is greater than the total sectional area of the first passage, therefore, gas is introduced into the first passage from gap 3015, gas disperses by the second passage again through greater number after gas dispersion further, finally enter radial reaction basket 3003 inner, gas is served to the effect of the dispersion of arriving very much, gas is uniformly distributed in radial direction reaction basket 3003, make reaction more all fully even, guarantee that the reacting gas in reaction bed all can be evenly distributed in short transverse and circumferencial direction, flowing is consistent, avoid the formation of gas dead band cause local overheating thus burn out catalyst.In this specific embodiment, the quantity of the second passage is more than the quantity of the first passage.
First passage of cylindrical shell 701 comprises open aperture 7013 and draws hole 7015 in, and open aperture 7013 is greater than draws hole 7015 in, draw in hole 7015 comparatively open aperture 7013 near air permeable plate 703.Particularly, open aperture 7013 is horn-like, and it is cylindric for drawing hole 7015 in, and draw hole 7015 in and be connected to the less one end of open aperture 7013 size, more specifically, open aperture 7013 can be round table-like.Be appreciated that drawing hole 7015 in can omit.Due to the open aperture 7013 of cylindrical shell 701 and the setting in gathering hole 7015, gas can be made can fully to enter the first passage from gap 3015.
Second passage of air permeable plate 703 comprises hole 7035 and lower opening 7037, and comparatively lower opening 7037 is near cylindrical shell 701 in upper hole 7035, and the size in upper hole 7035 is less than lower opening 7037.Particularly, the multiple spaced projection 7033 that air permeable plate 703 comprises substrate 7031 and is located on substrate 7031, upper hole 7035 is opened in protruding 7033, and lower opening 7037 is opened in substrate 7031.
Cylindrical shell 701 and air permeable plate 703 interval arrange thus form gap (figure does not mark) betwixt, this gap area first passage and the second passage.
Radial reaction basket 3003 can also comprise spacer ring 705, and spacer ring 705 is located between cylindrical shell 701 and air permeable plate 703 hermetically, and the gap length between cylindrical shell 701 and air permeable plate 703 is become multiple interval.Particularly, spacer ring 705 can be circular steel ring.Due to the setting of spacer ring 705, make the inside various piece in the height direction of radial reaction basket 3003 all have suitable gas to enter, gas is uniformly distributed in radial direction reaction basket 3003, makes reaction more all fully even.
Radial reaction basket 3003 can also comprise screen cloth 707, and screen cloth 707 is arranged on the side of air permeable plate 703 away from cylindrical shell 701.Particularly, screen cloth 707 can fitted and breathable plate 703.The setting of screen cloth 707 can gas dispersion further, gas is uniformly distributed in radial direction reaction basket 3003, makes reaction more all fully even.
Central tube 3010 part is arranged in radial reaction basket 3003, and one end is stretched out outside radial reaction basket 3003 and urceolus 3001, exports to urceolus 3001 after radial direction reaction basket 3003 enters central tube 3010 to make the gas through reaction.
Particularly, central tube 3010 can be tubular, and its sidewall can offer multiple passage, enters to make gas.
Refer to Fig. 3, central tube 3010 comprises cylindrical shell 801 and air permeable plate 803, and air permeable plate 803 is sheathed on outside cylindrical shell 801, and the passage of central tube 3010 comprises the first passage of through cylindrical shell 801 and the second passage of through air permeable plate 803.Wherein, the second passage and the first passage are interconnected, and the total sectional area of the second passage is greater than the total sectional area of the first passage.When central tube 3010 is arranged at radial reaction basket 3003, the cylindrical shell 801 of central tube 3010 is compared with the cylindrical shell 701 of air permeable plate 803 away from radial direction reaction basket 3003.The effect of the passage of central tube 3010 is contrary with the effect that radial direction reacts the passage of basket 3003, and the passage of radial reaction basket 3003 is to make gas dispersion, and the passage of central tube is to be held together by the gas collection of dispersion and entering central tube 3010 inside.
First passage of cylindrical shell 801 comprises open aperture 8013 and draws hole 8015 in, and open aperture 8013 is greater than draws hole 8015 in, draw in hole 8015 comparatively open aperture 8013 near air permeable plate 803.Particularly, open aperture 8013 is horn-like, and it is cylindric for drawing hole 8015 in, and draw hole 8015 in and be connected to the less one end of open aperture 8013 size, more specifically, open aperture 8013 can be round table-like.Be appreciated that drawing hole 8015 in can omit; Meanwhile, refer to Fig. 4, also can, by open aperture 8013 and the location swap drawing hole 8015 in, make open aperture 8013 closer to air permeable plate 803.
Second passage of air permeable plate 803 comprises hole 8035 and lower opening 8037, and comparatively lower opening 8037 is near cylindrical shell 801 in upper hole 8035, and the size in upper hole 8035 is less than lower opening 8037.Particularly, the multiple spaced projection 8033 that air permeable plate 803 comprises substrate 8031 and is located on substrate 8031, upper hole 8035 is opened in protruding 8033, and lower opening 8037 is opened in substrate 8031.
Cylindrical shell 801 and air permeable plate 803 interval arrange thus form gap (figure does not mark) betwixt, this gap area first passage and the second passage.
Central tube 3010 can also comprise spacer ring 805, and spacer ring 805 is located between cylindrical shell 801 and air permeable plate 803 hermetically, and the gap length between cylindrical shell 801 and air permeable plate 803 is become multiple interval.Particularly, spacer ring 805 can be circular steel ring.
Central tube 3010 can also comprise screen cloth 807, and screen cloth 807 is arranged on the side of air permeable plate 803 away from cylindrical shell 801.Particularly, screen cloth 807 can fitted and breathable plate 803.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1. one kind is applied to the dress discharging structure of water-cooled reactor, described water-cooled reactor comprises radial reaction basket, it is characterized in that, described fuel manipulator crane structure comprises multiple charge pipe spaced apart and discharge duct, described charge pipe stretches into described radial direction reaction basket from described radial direction reaction basket top, and described discharge duct stretches out described radial direction reaction basket bottom described radial direction reaction basket.
2. dress discharging structure according to claim 1, is characterized in that, the quantity of described discharge duct is multiple, and multiple described discharge duct is spaced apart.
3. dress discharging structure according to claim 1, is characterized in that, described fuel manipulator crane structure also comprises deflector, and described deflector is obliquely installed, and the lower of described deflector is connected with described discharge duct.
4. dress discharging structure according to claim 3, is characterized in that, described deflector is flat board or the conical plate of inclination.
5. a water-cooled reactor, it is characterized in that, comprise urceolus, radial reaction basket, water-cooling system, central tube, hydroecium, steam chest and as claim 1-2, dress discharging structure described in 4 any one, described radial direction reaction basket is positioned at described urceolus, and form gap between described radial direction reaction basket and described urceolus, described water-cooling system comprises the water cooling tube stretching into described radial direction reaction basket, described water cooling tube is communicated with described steam chest with described hydroecium respectively, described central tube stretches in described radial direction reaction basket, and partially pass through described radial direction reaction basket and stretch out outside described urceolus.
6. water-cooled reactor according to claim 5, it is characterized in that, described water-cooled reactor also comprises and is arranged at intervals at lower perforated plate in described urceolus and upper perforated plate, one end of described upper perforated plate and described urceolus keeps at a certain distance away, one in described hydroecium and described steam chest is formed between described urceolus one end and described upper perforated plate, and the another one in described hydroecium and described steam chest is formed between described lower perforated plate and described upper perforated plate; Described charge pipe successively through described upper perforated plate and described lower perforated plate, and stretches into described radial direction reaction basket.
7. the water-cooled reactor according to claim 5 or 6, it is characterized in that, described fuel manipulator crane structure also comprises deflector, described deflector is obliquely installed, and the lower of described deflector is connected with described discharge duct, described discharge duct and described central tube keep at a certain distance away, and higher one end of described deflector is connected to described central tube.
8. water-cooled reactor according to claim 5, it is characterized in that, described radial direction reaction basket and/or described central tube include cylindrical shell and air permeable plate, described radial direction reaction basket and/or described central tube offer passage, described passage comprises the first passage of through described cylindrical shell and the second passage of through described air permeable plate, described second passage and described first passage are interconnected, and the total sectional area of described second passage is greater than the total cross section of described first passage, the more described air permeable plate of described cylindrical shell of described radial direction reaction basket is near described urceolus, the more described air permeable plate of described cylindrical shell of described central tube reacts the described cylindrical shell of basket away from described radial direction.
9. water-cooled reactor according to claim 8, is characterized in that, described first passage of described cylindrical shell comprises open aperture and draws hole in, and described open aperture is greater than described gathering hole, and the more described open aperture in described gathering hole is near described air permeable plate; Described second passage of described air permeable plate comprises hole and lower opening, and the more described lower opening in described upper hole is near described cylindrical shell, and the size in described upper hole is less than described lower opening.
10. water-cooled reactor according to claim 8, it is characterized in that, described cylindrical shell and described air permeable plate interval arrange thus form gap betwixt, described radial direction reaction basket and/or described central tube also comprise spacer ring, described spacer ring is located between described cylindrical shell and described air permeable plate hermetically, and the described gap length between described cylindrical shell and described air permeable plate is become multiple interval; Described radial direction reaction basket and/or described central tube also comprise screen cloth, and described screen cloth is arranged on the side of described air permeable plate away from described cylindrical shell.
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