CN201198449Y - Small-sized natural hydrogen manufacturing conversion furnace - Google Patents
Small-sized natural hydrogen manufacturing conversion furnace Download PDFInfo
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- CN201198449Y CN201198449Y CNU2008200627107U CN200820062710U CN201198449Y CN 201198449 Y CN201198449 Y CN 201198449Y CN U2008200627107 U CNU2008200627107 U CN U2008200627107U CN 200820062710 U CN200820062710 U CN 200820062710U CN 201198449 Y CN201198449 Y CN 201198449Y
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Abstract
The utility model discloses a small natural gas-to-hydrogen converter, which relates to a natural gas-to-hydrogen converter. The purpose of the utility model is to resolve the problem that the long converter tube adopted by the miniaturized natural gas-to-hydrogen converter causes problems including large investment, large occupied area and material and resource waste. The small natural gas-to-hydrogen converter comprises a converter body and a converter tube; wherein, the converter body is composed of a fire-resisting top layer, a fire-resisting fire wall layer and a fire-resisting bottom layer; the converter tube, which is arranged in the converter body, is divided into three parts, a gas inlet section, a middle section and a gas outlet section; a gas inlet is positioned on the upper part of the gas inlet section and communicated with the gas inlet section; a gas outlet is communicated with the lower part of the gas outlet section; the lower part of the gas inlet section is communicated with the lower part of the middle section through an Omega-shaped pigtail; the upper part of the middle section is communicated with the upper part of the gas outlet section through a C-shaped pigtail; a bottom flue, one end of which is communicated with a draught fan, is arranged among the gas inlet section, the middle section and the gas outlet section; and at least one sidewall of the bottom flue is provided with a venthole. The small natural gas-to-hydrogen converter is generally used to convert natural gas into hydrogen.
Description
Technical field
The utility model relates to a kind of natural gas hydrogen preparation converter, particularly a kind of natural gas hydrogen preparation converter of miniaturization.
Background technology
The natural gas hydrogen preparation converter is under high temperature, highly compressed condition, with Sweet natural gas, oil field gas, coke(oven)gas, refinery exhaust or light oil is raw material, by the effect of nickel-base catalyst in the reformer tube, impel raw material and water vapour to carry out the high temperature service that syngas for synthetic ammonia (being hydrogen) produced in conversion reaction in reformer tube inside.
Because natural gas steam reforming is produced the technological process of hydrogen, be under the high temperature of the pressure of 2.0～4.0MPa (A) and 700～800 ℃, to carry out, the operational condition harshness, equipment and materials requires high, and its investment generally accounts for 30% of synthesis ammonia plant non-type facility investment.
The Sweet natural gas steam reaction is thermo-negative reaction, its heat requirement is necessary for the outside and provides, usually provide by the burner that is placed in converter top or bottom (fuel gas is generally Sweet natural gas), burner combustion is emitted heat, heat energy is converted into radiating capacity, radiating capacity is absorbed by boiler tube, satisfies reformer tube internal-response institute heat requirement, and this process is carried out in the converter radiation chamber usually.So-called radiation chamber is the part of carrying out radiative transfer by flame or high-temperature flue gas, radiation chamber is the main place of heat exchange, 70～80% of the thermal load of whole Sweet natural gas steam reforming stove is undertaken by radiation chamber, it is full stove most important parts, and Sweet natural gas steam reforming total overall reaction process is all finished in radiation chamber.
Because of the conversion of natural gas hydrogen production reaction is a strong endothermic reaction, so reinforcement in reformer tube inside along with reaction depth, the thermograde of beds can present a kind of state that reduces gradually along gas flow direction, but in order to be that being reflected under the metastable temperature in the whole boiler tube carried out, this just requires the heat of each section of boiler tube acquisition inconsistent, generally speaking be exactly the direction along reactant gas flow, the heat that boiler tube obtains increases gradually.The design of converter radiation chamber and the key problem of operation are to make the wall temperature of boiler tube even up and down, just reduce because carbon and overheated is analysed in the uneven part of being caused of reaction, prolong the boiler tube life-span.In common Sweet natural gas steam reforming stove, adopt the burner combustion direction method consistent to address this problem with the unstripped gas gas flow direction.
In general, the pressure that the length of reformer tube is subjected to boiler tube inner catalyst ultimate compression strength, permission falls, the restriction of factor such as thermograde and conversion tube expansion in the flue gas, and the length of general reformer tube is about 8～12m.Adopt the reformer tube of this length comparatively economical for large and medium-sized natural gas hydrogen preparation converter, but for the mini gas converter, adopt long boiler tube will certainly increase the investment of furnace binding and refractory materials, and whole converter volume and take up room excessively causes the unnecessary waste of various resources.
The utility model content
The purpose of this utility model be solve that the investment that miniaturization natural gas hydrogen preparation converter adopts long boiler tube to cause is big, floor space greatly, the problem of material and the wasting of resources, a kind of mini gas converter is provided, investment that can be littler, littler take up room and material expends are satisfied the requirement of natural gas hydrogen preparation conversion reaction.
The purpose of this utility model realizes by following technical proposals:
A kind of mini gas hydrogen manufacturing conversion furnace, comprise the body of heater that furnace roof flame retardant coating, furnace wall flame retardant coating, furnace bottom flame retardant coating constitute, and be arranged at the intravital boiler tube of stove, described boiler tube is divided into axial air inlet section, interlude and the section of giving vent to anger three parts, the top that inlet mouth is positioned at the air inlet section communicates with it, it communicates the bottom of air outlet and the section of giving vent to anger, the bottom of air inlet section is communicated with by " Ω " shape pigtail with the bottom of interlude, and the top of interlude is communicated with by " C " shape pigtail with the top of the section of giving vent to anger.
On the described furnace bottom flame retardant coating, between air inlet section, interlude and the section of giving vent to anger, be provided with the sole flue that an end communicates with induced draft fan, offer exhaust hole at least one sidewall of sole flue.
Described air inlet section, interlude and the section of giving vent to anger distribution triangular in shape.
Described air inlet section, interlude and the section of giving vent to anger distribution triangular in shape, sole flue is herring-bone.
One end of described herring-bone sole flue is communicated with induced draft fan, and closed at both ends in addition all offers exhaust hole towards the both sidewalls of air inlet section and both sidewalls towards interlude.
The described exhaust hole quantity of offering on the both sidewalls of interlude is the twice of the exhaust hole quantity offered on the both sides sidewall of air inlet section.
Described inlet mouth and air outlet are positioned at outside the body of heater.
Described " Ω " shape pigtail and " C " shape pigtail are positioned at outside the body of heater.
The utility model adopts said structure, with existing three sections of being divided into upright distribution than long boiler tube, can effectively reduce the height of body of heater, thereby significantly reduce using and investing of furnace binding and refractory materials, reduce converter take up room and material expends; " Ω " shape pigtail and " C " shape pigtail adopt the form of many elbows, can resist distortion of materials under the pyritous working order; Setting by sole flue, and the setting of different quantities exhaust hole on each sidewall of sole flue, because perforate quantity is directly proportional with flue gas flow rate on the side wall, be that perforate quantity is many more, under the draft effect that the induced draft fan of converter outside produces, then flue gas flow rate is fast more, and flue gas flow rate is directly proportional with the heat of supply boiler tube in the unit time, be that flue gas flow rate is fast more, then the heat that provides in the unit time is few more, that is to say, perforate quantity is many more on the side wall, then flue gas flow rate is fast more in the side wall near zone, and the heat that the reformer tube in this zone obtains is more little, can satisfy the hydrogen manufacturing conversion reaction requirement that the heat that obtains along the direction boiler tube of reactant gas flow increases gradually.
As seen, adopt the utility model of said structure, compared with prior art, have investment that can be littler, littler take up room and material expends, satisfy the advantage of natural gas hydrogen preparation conversion reaction requirement, be applicable to the natural gas hydrogen preparation converter of miniaturization.
Description of drawings
Fig. 1 is a boiler tube structural representation of the present utility model;
Fig. 2 is the structural representation of boiler tube of the present utility model and sole flue;
Fig. 3, Fig. 4 are the structural representations of sole flue of the present utility model;
Fig. 5 is a structural representation of the present utility model;
Number in the figure: the 1st, air inlet section, the 2nd, interlude, the 3rd, the section of giving vent to anger, the 4th, inlet mouth, the 5th, " Ω " shape pigtail, the 6th, " C " shape pigtail, the 7th, air outlet, the 8th, sole flue, the 9th, furnace bottom flame retardant coating, the 10th, furnace bottom support, the 11st, exhaust hole, the 12nd, furnace roof flame retardant coating, the 13rd, furnace wall flame retardant coating.
Embodiment
Below in conjunction with specific embodiments and the drawings the utility model is further described.
As Fig. 1, shown in Figure 5, a kind of mini gas hydrogen manufacturing conversion furnace, comprise the body of heater that furnace roof flame retardant coating 12, furnace wall flame retardant coating 13, furnace bottom flame retardant coating 6 constitute, and be arranged at the intravital boiler tube of stove, the internal space that furnace roof flame retardant coating 12, furnace wall flame retardant coating 13, furnace bottom flame retardant coating 6 constitute is the converter radiation chamber, and the furnace bottom flame retardant coating is arranged with furnace bottom support 10.
Refractory ceramic fibre have quality light, can alleviate that steel construction load, thermal conductivity are little, characteristics such as high insulating effect, simple in structure and easy construction, in the present embodiment, refractory ceramic fibre the is laid in subregion of converter wall and furnace roof and exhanst gas outlet flue.The furnace bottom flame retardant coating adopts refractory castable, and this is because refractory castable has characteristics such as plasticity-occasion, construction strong, that be applicable to the different shape complexity be simple, and has the ability of the anti-sweep of gases higher than refractory ceramic fibre.
Present embodiment with " length " boiler tube on the ordinary meaning (boiler tube length be about 8～12m) be designed to 3 independently " weak point " boiler tube (boiler tube length is about 2～3m), be respectively axial air inlet section 1, interlude 2 and the section of giving vent to anger 3 three parts, inlet mouth 4 communicates with the top of air inlet section 1, it communicates the bottom of air outlet 7 and the section of giving vent to anger 3, the bottom of air inlet section 1 is communicated with by " Ω " shape pigtail 5 with the bottom of interlude 2, and the top of interlude 2 is communicated with by " C " shape pigtail 6 with the top of the section of giving vent to anger 3.
Above-mentioned " Ω " shape pigtail 5 and " C " shape pigtail 6, all be to make by the steel pipe that the good Incoloy800H steel of mechanical property gets, because this steel pipe thermal deformation resistant ability is strong, flexility is good, usually " pigtail " is otherwise known as, adopt the form of many elbows, can resist distortion of materials under the pyritous working order.
The inlet mouth 4 and the air outlet 7 of boiler tube are positioned at outside the body of heater; " Ω " shape pigtail 5 and " C " shape pigtail 6 are positioned at outside the body of heater.Boiler tube adopts the form of upper support, adopts ear formula seat supports at furnace roof, can freely expand downwards when boiler tube is worked under the condition of high temperature.Air inlet section 1, interlude 2 and the section of giving vent to anger 3 are symmetrical triangular shape and distribute.
As shown in Figure 2, on the furnace bottom flame retardant coating 6, between air inlet section 1, interlude 2 and the section of giving vent to anger 3, be provided with the sole flue 8 that an end communicates with induced draft fan.Sole flue 8 has been divided into three parts with the converter internal space, and air inlet section 1, interlude 2 and the section of giving vent to anger 3 lay respectively at wherein.
Sole flue 8 is herring-bone, and the one end is communicated with induced draft fan, and closed at both ends in addition all offers exhaust hole 11 towards the both sidewalls of air inlet section 1 and both sidewalls towards interlude 2, does not offer exhaust hole 11 towards the two side of the section of giving vent to anger 3.Because perforate quantity is directly proportional with flue gas flow rate on the sidewall, be that perforate quantity is many more, under the draft effect that the induced draft fan of converter outside produces, then flue gas flow rate is fast more, and the heat of supplying with boiler tube in flue gas flow rate and unit time is directly proportional, be that flue gas flow rate is fast more, then the heat that provides in the unit time is few more, that is to say, perforate quantity is many more on the side wall, then flue gas flow rate is fast more in the side wall near zone, and the heat that the reformer tube in this zone obtains is more little.Obviously, by said structure, the heat that air inlet section 1, interlude 2, the section of giving vent to anger 3 are obtained increases progressively, to satisfy the requirement of strong endothermic conversion reaction.
The preferred value of offering quantity of above-mentioned exhaust hole 11 is, exhaust hole 11 quantity of offering on the both sidewalls of interlude 2 are twices of exhaust hole 11 quantity offered on the both sides sidewall of air inlet section 1, do not offer exhaust hole 11 towards the two side of the section of giving vent to anger 3.
In the present embodiment, (reduce to 2～3m) from 8～12m, thereby make the consumption of converter steel construction reduce by 35%, the consumption of refractory ceramic fibre has reduced by 43%, effectively reduces cost owing to greatly reduce the height of whole boiler tube system.
Claims (8)
1. mini gas hydrogen manufacturing conversion furnace, comprise furnace roof flame retardant coating (12), furnace wall flame retardant coating (13), the body of heater that furnace bottom flame retardant coating (6) constitutes, and be arranged at the intravital boiler tube of stove, it is characterized in that, described boiler tube is divided into axial air inlet section (1), interlude (2) and the section of giving vent to anger (3) three parts, inlet mouth (4) communicates with the top of air inlet section (1), it communicates the bottom of air outlet (7) and the section of giving vent to anger (3), the bottom of air inlet section (1) is communicated with by " Ω " shape pigtail (5) with the bottom of interlude (2), and the top of interlude (2) is communicated with by " C " shape pigtail (6) with the top of the section of giving vent to anger (3).
2. a kind of according to claim 1 mini gas hydrogen manufacturing conversion furnace, it is characterized in that, on the described furnace bottom flame retardant coating (6), be positioned at and be provided with the sole flue (8) that an end communicates with induced draft fan between air inlet section (1), interlude (2) and the section of giving vent to anger (3), offer exhaust hole (11) at least on one sidewall of sole flue (8).
3. a kind of as claimed in claim 1 or 2 mini gas hydrogen manufacturing conversion furnace is characterized in that, described air inlet section (1), interlude (2) and the section of giving vent to anger (3) distribution triangular in shape.
4. as a kind of mini gas hydrogen manufacturing conversion furnace as described in the claim 2, it is characterized in that, described air inlet section (1), interlude (2) and the section of giving vent to anger (3) distribution triangular in shape, sole flue (8) is herring-bone.
5. as a kind of mini gas hydrogen manufacturing conversion furnace as described in the claim 4, it is characterized in that, one end of described herring-bone sole flue (8) is communicated with induced draft fan, and closed at both ends in addition all offers exhaust hole (11) towards the both sidewalls of air inlet section (1) and both sidewalls towards interlude (2).
6. as a kind of mini gas hydrogen manufacturing conversion furnace as described in the claim 5, it is characterized in that described exhaust hole (11) quantity of offering on the both sidewalls of interlude (2) is the twice of exhaust hole (11) quantity offered on the both sides sidewall of air inlet section (1).
7. as a kind of mini gas hydrogen manufacturing conversion furnace as described in the claim 6, it is characterized in that described inlet mouth (4) and air outlet (7) are positioned at outside the body of heater.
8. as a kind of mini gas hydrogen manufacturing conversion furnace as described in the claim 7, it is characterized in that described " Ω " shape pigtail (5) and " C " shape pigtail (6) are positioned at outside the body of heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200627107U CN201198449Y (en) | 2008-03-28 | 2008-03-28 | Small-sized natural hydrogen manufacturing conversion furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200627107U CN201198449Y (en) | 2008-03-28 | 2008-03-28 | Small-sized natural hydrogen manufacturing conversion furnace |
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| Publication Number | Publication Date |
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| CN201198449Y true CN201198449Y (en) | 2009-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200627107U Expired - Lifetime CN201198449Y (en) | 2008-03-28 | 2008-03-28 | Small-sized natural hydrogen manufacturing conversion furnace |
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| Country | Link |
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| CN (1) | CN201198449Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002401A (en) * | 2019-05-22 | 2019-07-12 | 山东齐鲁石化工程有限公司 | Applied to hydro carbons-producing hydrogen from steam conversion reburner boiler tube installing and fixing method |
-
2008
- 2008-03-28 CN CNU2008200627107U patent/CN201198449Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002401A (en) * | 2019-05-22 | 2019-07-12 | 山东齐鲁石化工程有限公司 | Applied to hydro carbons-producing hydrogen from steam conversion reburner boiler tube installing and fixing method |
| CN110002401B (en) * | 2019-05-22 | 2024-03-15 | 山东齐鲁石化工程有限公司 | Furnace tube installation and fixation method applied to hydrocarbon-steam conversion hydrogen production reformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: High tech Zone Gaopeng Avenue in Chengdu city in Sichuan province No. 5, park B block, 4F, zip code: 610041 Patentee after: Sichuan Ally Hi-tech Co., Ltd. Address before: High tech Zone Gaopeng Avenue in Chengdu city in Sichuan province No. 5, park B block, 4F, zip code: 610041 Patentee before: Yalian High-Tech Co., Ltd., Sichuan |
|
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN YALIAN HIGH-TECH CO., LTD. Free format text: FORMER NAME: SICHUAN YALIAN HIGH-TECH CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090225 |