CN201763467U - Methanol cracker of HR16DE engine for directly combusting methanol - Google Patents
Methanol cracker of HR16DE engine for directly combusting methanol Download PDFInfo
- Publication number
- CN201763467U CN201763467U CN2010202877091U CN201020287709U CN201763467U CN 201763467 U CN201763467 U CN 201763467U CN 2010202877091 U CN2010202877091 U CN 2010202877091U CN 201020287709 U CN201020287709 U CN 201020287709U CN 201763467 U CN201763467 U CN 201763467U
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- China
- Prior art keywords
- methanol
- methyl alcohol
- heat collecting
- collecting pipe
- tube
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a methanol cracker of an HR16DE engine for directly combusting methanol, which comprises a heat collector tube, wherein a cracked gas collector box is arranged in the heat collector tube; a cracked gas transfer tube is arranged on one side of the gas collector box; two catalytic pyrolysis tubes with the same structure are arranged between the other side of the gas collector box and a tail gas outlet end cover of the heat collector tube; a catalyst is coated on the inner wall in the 1/2 section of each catalytic pyrolysis tube; a fin for strengthening the heat transmission is arranged on the outer wall in the other 1/2 section of the tube; a methanol nozzle bracket is welded by centering the center of each catalytic pyrolysis tube on the tail gas outlet end cover of the heat collector tube; a methanol nozzle is inserted into the bracket in a sealing way; the other end of the nozzle is connected with methanol rails; and the methanol rails are fixedly connected through the bracket on the end cover, a pressing plate and bolts. The methanol cracker has the advantages of simple structure, long service life, high catalysis efficiency of the catalyst, and stable gas supply.
Description
Technical field
The utility model relates to a kind of methanol pyrolyzer of direct burning methanol HR16DE engine configurations, belongs to engine for combusting methanol device technology.
Background technique
It is two hang-ups that present ic engine industry faces that environmental pollution and oil price skyrocket, and methyl alcohol can be alleviated the current predicament of internal-combustion engine to a great extent as alternative fuel efficient, cleaning.The methyl alcohol endothermic pyrolysis is a dissociated methanol gas, reclaim waste gas residual heat as motor fuel, thereby high-efficiency cleaning utilizes alternative energy source.Existing methanol decomposition device, it adopts traditional shell structure, the many catalyst tubes of diameter 0.8cm are set in shell, this elongated catalyst tube is owing to be among the high-temperature tail gas environment for a long time, because of the inhomogeneous catalyst tube distortion that causes of being heated, finally cause breakage, the leakage of catalysing tube.Also having methanol pyrolyzer is to adopt a U type tubular construction, U type inner tube wall coated catalysts are set in heat collecting pipe.This U type catalyst tube heat exchange area is little, it is not high to absorb engine tail gas waste-heat efficient, and pyrolysis apparatus is not provided with the parts that store dissociated methanol gas, in acceleration moment of motor since required methanol decomposition tolerance increase, and methanol decomposition speed has certain relatively lagging behind, and the phenomenon of air feed deficiency then occurs.Methanol pyrolyzer also has cage-shaped structure promptly to be provided with the squirrel-cage catalyst case in heat collecting pipe, adorn friendly pellet type catalyst in this catalyst case, pellet type catalyst cracky in methyl alcohol gas and cracking gas contact process becomes molecule, molecule is easy to be taken out of as for cylinder by gas, will be to cylinder wear.
Summary of the invention
The utility model purpose is to provide and optimize a kind of methanol pyrolyzer of direct burning methanol HR16DE engine configurations, and this methanol pyrolyzer is simple in structure, long service life, and catalyst efficient height, air feed is stable.
The utility model is realized by the following technical programs, a kind of methanol pyrolyzer of direct burning methanol HR16DE engine configurations, it is characterized in that, this methanol pyrolyzer comprises cylindrical heat collecting pipe 3, this heat collecting pipe is serially connected with on the offgas duct by the adpting flange at two ends, in heat collecting pipe apart from heat collecting pipe tail gas inlet end cap 30-50mm place, one three lobe type cracking gas collector box 2 is set, on the box plate of close heat collecting pipe tail gas inlet end cap one side of cracking gas collector box, connect cracking gas fairlead 1, this cracking gas fairlead passes heat collecting pipe tail gas inlet end cap and joins by connecting tube and motor; Between the tail gas outlet end cap of the opposite side box plate of cracking gas collector box and heat collecting pipe, be parallel to the heat collecting pipe center line the identical catalytic pyrolysis pipe 6 of two root architectures is set, 1/2 pipeline section of the every close cracking gas collector box of catalytic pyrolysis pipe, the inner tube wall coated catalysts, 1/2 pipeline section near heat collecting pipe tail gas outlet end, the pipe outer wall is shaped on the fin of augmentation of heat transfer, centering catalytic pyrolysis tube hub welding methyl alcohol nozzle bearing 5 on heat collecting pipe tail gas outlet end cap, the ring cavity of this methyl alcohol nozzle bearing connects methyl alcohol cooling tube 7, sealing grafting methyl alcohol nozzle 4 in the methyl alcohol nozzle bearing, the other end of methyl alcohol nozzle is connected with methyl alcohol rail 8, the methyl alcohol rail is by the support 11 on the heat collecting pipe tail gas outlet end cap, and pressing plate 9 is fixedlyed connected with screw 10.
Advantage of the present utility model is, the apparatus structure compact and reasonable adopts catalytic pyrolysis pipe heat exchange efficiency height, and the catalyzer area of contact is big, and catalytic reaction is complete.Be provided with the cracking gas collector box, quicken moment at motor sufficient dissociated methanol gas is provided, guarantee that engine acceleration can be good.Coating type catalyzer difficult drop-off can not produce particulate, has avoided the wearing and tearing of the particulate of catalyzer to cylinder.Methyl alcohol nozzle bearing cavity adopts cold methanol heat exchange cooling, prevents methyl alcohol nozzle heat damage, thereby has improved greatly working life of the present utility model.
Description of drawings
Fig. 1 is this type model utility structural representation.
Fig. 2 is an A-A enlarged view among Fig. 1.
Fig. 3 is a C-C enlarged view among Fig. 1.
Fig. 4 is a B-B enlarged view among Fig. 1.
Among the figure: 1 cracking gas fairlead, 2 cracking gas collector boxs, 3 heat collecting pipes, 4 methyl alcohol nozzles, 5 methyl alcohol nozzle bearings, 6 catalytic pyrolysis pipes, 7 methyl alcohol cooling tubes, 8 methyl alcohol rails, 9 pressing plates, 10 screws, 11 supports.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in detail as follows: heat collecting pipe 3 of the present utility model adopts cylindrical tube, and internal diameter is 146mm, and total length is 540mm; The two ends of this heat collecting pipe are serially connected with on the motor exhaust outlet pipe by the transition tube of reducing and the flange at two ends thereof, and the reducing transition tube is of a size of internal diameter 45mm, and length is 80mm, and flange size is that external diameter is 124mm.The three lobe type cracking gas collector boxs 2 that are provided with in heat collecting pipe tail gas entrance point, its volume is about 4.2 * 10
-4m
3Be connected with cracking gas fairlead 1 on the cracking gas collector box, be of a size of internal diameter 20mm, external diameter 25mm, length is 80mm; Between cracking gas collector box and heat collecting pipe tail gas outlet end cap the identical catalytic pyrolysis pipe of two root architectures 6 its internal diameters being set is 35mm, total length is 380mm, 1/2 pipeline section inwall of catalytic pyrolysis pipe scribbles catalyzer, 1/2 pipeline section outer wall is shaped on heat-exchange fin in addition, the heat-exchange fin external diameter is 42mm, the tail gas outlet end centering catalytic pyrolysis pipe mouth of pipe at heat collecting pipe is offered the hole that diameter is 35mm, centering catalytic pyrolysis tube hub is welded with methyl alcohol nozzle bearing 5 around in this hole, this methyl alcohol nozzle bearing adopts ring cavity structure, its external diameter is 36mm, and height is 23mm; Methyl alcohol nozzle bearing annular chamber adopts methyl alcohol cooling tube 7 to be communicated with, methyl alcohol cooling tube internal diameter is 8mm, sealing grafting model is a R30242 methyl alcohol nozzle 4 in the methyl alcohol nozzle bearing, the methyl alcohol nozzle the other end is plugged in methyl alcohol rail 8 interfaces, the methyl alcohol rail is a cuboid, sectional dimension is 14mm * 14mm, and this methyl alcohol rail is fixedlyed connected with screw 10 by support on the end cap 11 and pressing plate 9.
The methanol pyrolyzer working procedure of said structure is as described below:
One is pressed into the methyl alcohol rail with methanol liquid by methanol pump, one enters the methyl alcohol cooling tube, the methyl alcohol that enters the methyl alcohol rail is sprayed into droplet by the methyl alcohol nozzle and enters in the catalytic pyrolysis pipe, by with heat collecting pipe in motor exhaust carry out heat exchange, the methyl alcohol droplet is vaporizated into methanol gas; Methanol gas is further carried out the heat exchange temperature rising and is reached 320-350 ℃ in the catalytic pyrolysis pipe, enter catalytic pyrolysis pipe catalyst reaction section, methyl alcohol gas is cracked into the cracking gas of hydrogen and carbon monoxide, cracking gas enters the cracking gas collector box and by the cracking gas fairlead, and enters engine cylinder by connecting tube and burn.The cavity that the methyl alcohol that enters the methyl alcohol cooling tube flows into the methyl alcohol nozzle bearing carries out the temperature that heat exchange reduces the methyl alcohol nozzle bearing and guarantees not heat damage of methyl alcohol nozzle.The heat that the utility model device utilizes is all from engine tail gas heat quantity.
The utility model device is configured on the HR16DE gas motor, for Under Different Work Condition of Engine provides sufficient fuel, reclaims waste gas residual heat, improves the utilization ratio of fuel, realizes the high-efficiency cleaning burning of methanol fuel.
The concrete parameter of the HR16DE motor of the utility model configuration is as shown in table 1:
Table 1
| MANUFACTURER | Nissan | Cylinder diameter * stroke (mm * mm) | 78×83.6 |
| Model | HR16DE | Compression ratio | 9.8 |
| Form | In-line four cylinder | Rated power/rotating speed (kW/r/min) | 80/6000 |
| Discharge capacity (L) | 1.598 | Maximum Torque/rotating speed (Nm/r/min) | 153/4400 |
Find that through a large amount of engine pedestal experiments the power character of utilizing the utility model device that dissociated methanol gas is started reaches more than 95% of former petrol engine; Its Economy is more considerable, and its minimum volume is replaced than being 1.43; Its effulent has significantly reduction than former petrol engine.
Claims (1)
1. the methanol pyrolyzer of a direct burning methanol HR16DE engine configurations, it is characterized in that, this methanol pyrolyzer comprises cylindrical heat collecting pipe (3), this heat collecting pipe is serially connected with on the offgas duct by the adpting flange at two ends, in heat collecting pipe apart from heat collecting pipe tail gas inlet end cap 30-50mm place, one three lobe type cracking gas collector box (2) is set, on the box plate of close heat collecting pipe tail gas inlet end cap one side of cracking gas collector box, connect cracking gas fairlead (1), this cracking gas fairlead passes heat collecting pipe tail gas inlet end cap and joins by connecting tube and motor; Between the tail gas outlet end cap of the opposite side box plate of cracking gas collector box and heat collecting pipe, be parallel to the heat collecting pipe center line the identical catalytic pyrolysis pipe (6) of two root architectures is set, 1/2 pipeline section of the every close cracking gas collector box of catalytic pyrolysis pipe, the inner tube wall coated catalysts, 1/2 pipeline section near heat collecting pipe tail gas outlet end, the pipe outer wall is shaped on the fin of augmentation of heat transfer, centering catalytic pyrolysis tube hub welding methyl alcohol nozzle bearing (5) on heat collecting pipe tail gas outlet end cap, the ring cavity of this methyl alcohol nozzle bearing connects methyl alcohol cooling tube (7), sealing grafting methyl alcohol nozzle (4) in the methyl alcohol nozzle bearing, the other end of methyl alcohol nozzle is connected with methyl alcohol rail (8), the methyl alcohol rail is by the support (11) on the heat collecting pipe tail gas outlet end cap, and pressing plate (9) is fixedlyed connected with screw (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202877091U CN201763467U (en) | 2010-08-11 | 2010-08-11 | Methanol cracker of HR16DE engine for directly combusting methanol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202877091U CN201763467U (en) | 2010-08-11 | 2010-08-11 | Methanol cracker of HR16DE engine for directly combusting methanol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201763467U true CN201763467U (en) | 2011-03-16 |
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ID=43716073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202877091U Expired - Fee Related CN201763467U (en) | 2010-08-11 | 2010-08-11 | Methanol cracker of HR16DE engine for directly combusting methanol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201763467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131460A (en) * | 2013-03-19 | 2013-06-05 | 湖南大学 | Heat exchanger for catalytic cracking of heat recovery fuel |
| DE102022003716A1 (en) | 2022-10-07 | 2024-04-18 | Albonair Gmbh | Exhaust gas heating device with optimized fuel-air ratio distribution |
-
2010
- 2010-08-11 CN CN2010202877091U patent/CN201763467U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131460A (en) * | 2013-03-19 | 2013-06-05 | 湖南大学 | Heat exchanger for catalytic cracking of heat recovery fuel |
| DE102022003716A1 (en) | 2022-10-07 | 2024-04-18 | Albonair Gmbh | Exhaust gas heating device with optimized fuel-air ratio distribution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110316 Termination date: 20120811 |