CN101240736A - Methanol cracker fuel nozzle cooling device - Google Patents
Methanol cracker fuel nozzle cooling device Download PDFInfo
- Publication number
- CN101240736A CN101240736A CNA2008100524209A CN200810052420A CN101240736A CN 101240736 A CN101240736 A CN 101240736A CN A2008100524209 A CNA2008100524209 A CN A2008100524209A CN 200810052420 A CN200810052420 A CN 200810052420A CN 101240736 A CN101240736 A CN 101240736A
- Authority
- CN
- China
- Prior art keywords
- methanol
- nozzle
- fuel
- cooling
- cooling chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 238000001816 cooling Methods 0.000 title claims abstract description 30
- 239000000446 fuel Substances 0.000 title claims abstract description 26
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 5
- 239000002826 coolant Substances 0.000 abstract description 2
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
本发明公开了一种甲醇裂解器燃料喷嘴冷却装置，本发明在甲醇裂解器上的喷嘴与喷嘴支座之间设有冷却腔，冷却腔与燃料管路相通。醇轨与喷嘴组合为一体，甲醇燃料经甲醇泵分别进入醇轨和冷却腔。在冷却腔与甲醇泵之间的燃料管路上设有限压阀。即冷却腔与甲醇泵、限压阀通过燃料管路构成串接闭合回路，与喷嘴、组合为一体的支路并接于甲醇泵出口。燃料在泵的作用下一路进入喷嘴进行燃烧；另一路进入冷却腔，由于甲醇的汽化潜热很大，在冷却腔内吸收大量的热量，使喷嘴表面的温度迅速下降到30℃以下，从而达到冷却喷嘴的目的。本发明利用甲醇为冷却介质进行喷嘴的自行冷却，结构简单；可实现在甲醇裂解器上应用的可行性。
The invention discloses a fuel nozzle cooling device of a methanol cracker. In the invention, a cooling cavity is arranged between a nozzle on the methanol cracker and a nozzle support, and the cooling cavity communicates with a fuel pipeline. The alcohol rail and the nozzle are combined into one, and the methanol fuel enters the alcohol rail and the cooling chamber respectively through the methanol pump. A pressure limiting valve is provided on the fuel pipeline between the cooling chamber and the methanol pump. That is, the cooling chamber, the methanol pump, and the pressure limiting valve form a series closed circuit through the fuel pipeline, and the branch circuit combined with the nozzle and the one is connected to the outlet of the methanol pump. Under the action of the pump, the fuel enters the nozzle one way for combustion; the other way enters the cooling chamber. Due to the large latent heat of vaporization of methanol, it absorbs a large amount of heat in the cooling chamber, so that the temperature of the nozzle surface drops rapidly to below 30°C, thereby achieving cooling. The purpose of the nozzle. The invention uses methanol as a cooling medium to self-cool the nozzle, has a simple structure, and can realize the feasibility of being applied to a methanol cracker.
Description
技术领域Technical field
本发明属于内燃机领域，具体涉及一种利用甲醇燃料自行冷却裂解器燃料喷嘴的装置。The invention belongs to the field of internal combustion engines, and in particular relates to a device for self-cooling the fuel nozzle of a cracker by using methanol fuel.
背景技术 Background technique
二十世纪初，随着国际油价攀升和人们对大气环境的关注，再次激发了人们对车载甲醇裂解制氢的研究。因为将甲醇作为清洁代用燃料，不但能够缓解能源的紧张，单从经济性分析，发动机使用甲醇比使用汽油经济性要好的多。所以众多研究机构投入对甲醇裂解器的研究。由于将醇类催化裂解产生氢是利用发动机排气的余热来进行，所以发动机的排气从裂解器内通过，裂解器的表面因长期耐受高温(200-750℃)而受到侵蚀。位于裂解器上甲醇喷嘴的材料一般为硬塑料。置于高温裂解器上的甲醇喷嘴易受热损坏，甚至有的工作不到半小时就被烧化。如采用金属材料制作，因为甲醇喷嘴的启闭由电磁控制，所以外壳不能是金属，而且金属材料也不耐甲醇腐蚀。这一问题严重阻碍了内燃机甲醇裂解制氢技术的发展。At the beginning of the 20th century, with the rise of international oil prices and people's concern about the atmospheric environment, people's research on hydrogen production from vehicle-mounted methanol cracking was stimulated again. Because using methanol as a clean alternative fuel can not only alleviate the energy shortage, but from the economical analysis alone, the use of methanol in engines is much more economical than the use of gasoline. Therefore, many research institutions have invested in the research of methanol cracker. Since the catalytic cracking of alcohols to generate hydrogen is carried out by utilizing the exhaust heat of the engine, the exhaust gas of the engine passes through the cracker, and the surface of the cracker is eroded due to long-term high temperature resistance (200-750°C). The material of the methanol nozzle located on the cracker is generally hard plastic. The methanol nozzle placed on the high temperature cracker is easily damaged by heat, and some even burnt after working for less than half an hour. If it is made of metal material, because the opening and closing of the methanol nozzle is controlled by electromagnetic, the shell cannot be made of metal, and the metal material is not resistant to methanol corrosion. This problem seriously hinders the development of methanol cracking hydrogen production technology in internal combustion engines.
发明内容Contents of Invention
本发明的目的是提供一种利用甲醇燃料自行冷却裂解器燃料喷嘴的装置。The object of the present invention is to provide a device for self-cooling the fuel nozzle of the cracker by using methanol fuel.
以下结合附图对本发明的技术方案予以说明。甲醇裂解器燃料喷嘴冷却装置具有：甲醇裂解器1、燃料管路2、甲醇泵3、限压阀4、醇轨5、喷嘴6、喷嘴支座7等。在甲醇裂解器1上的喷嘴6与喷嘴支座7之间设有冷却腔8，冷却腔8与燃料管道2相通。醇轨5与喷嘴6组合为一体。甲醇燃料经甲醇泵3分别进入醇轨5和冷却腔8。在冷却腔8与甲醇泵3之间的燃料管路2上设有限压阀4。即冷却腔8与甲醇泵3、限压阀4通过燃料管路构成串接闭合回路，与喷嘴6、醇轨5组合为一体的支路并接于甲醇泵出口。限压阀4的作用是将压力限制到某个可调的压力水平上。The technical solution of the present invention will be described below in conjunction with the accompanying drawings. The methanol cracker fuel nozzle cooling device has: methanol cracker 1, fuel pipeline 2, methanol pump 3, pressure limiting valve 4, alcohol rail 5,
裂解器燃料喷嘴冷却的工作原理是：甲醇燃料在甲醇泵3的作用下一路经醇轨5进入喷嘴6进行喷射燃烧；另一路进入置于喷嘴支座上的冷却腔，由于甲醇的汽化潜热很大(是汽油的3.5倍)，在冷却腔内将吸收大量的热量，使甲醇喷嘴支座内喷嘴孔表面的温度迅速下降到30℃以下，从而达到冷却喷嘴的目的。The working principle of the cracker fuel nozzle cooling is: under the action of the methanol pump 3, the methanol fuel enters the
附图说明Description of drawings
附图为本发明系统原理图。Accompanying drawing is the schematic diagram of the system of the present invention.
具体实施方式 Detailed ways
以下通过具体实施例对本发明的技术方案作进一步的说明。本实施例发动机的转速为3000r/min，负荷为110N·m，发动机的排气温度为700℃。发动机用进气道喷射汽油启动，打开甲醇泵3，在排气温度低于320℃的情况下，喷嘴6关闭，甲醇液体通过燃料管路进入冷却腔，对喷嘴进行冷却。启动后，当排气温度高于320℃时，甲醇裂解器1开始工作，喷嘴6打开，一部分甲醇液体通过甲醇喷嘴进入裂解器内转换为燃烧气体，进入气缸燃烧，另一部分则进入冷却腔8，对喷嘴进行冷却。连续运行4小时后，停车检查甲醇喷嘴的情况：甲醇喷嘴完好无损，无任何烧化的迹象。通过本发明提高了甲醇喷嘴的可靠性及寿命，达到了预想的效果。The technical solutions of the present invention will be further described below through specific examples. In this embodiment, the rotational speed of the engine is 3000r/min, the load is 110N·m, and the exhaust temperature of the engine is 700°C. The engine is started by injecting gasoline into the intake port, and the methanol pump 3 is turned on. When the exhaust temperature is lower than 320°C, the
实验发动机的具体参数如下：The specific parameters of the experimental engine are as follows:
发动机参数：Engine Parameters:
本发明的特点及有益效果体现在，利用甲醇为冷却介质进行喷嘴的自行冷却，结构简单；可实现在甲醇裂解器上应用的可行性。同时本发明的提出将有利于余热制氢技术进一步的推广和应用。The characteristics and beneficial effects of the present invention are embodied in that the self-cooling of the nozzle is carried out by using methanol as the cooling medium, and the structure is simple; the feasibility of application on the methanol cracker can be realized. At the same time, the proposal of the present invention will be beneficial to the further popularization and application of waste heat hydrogen production technology.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100524209A CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol cracker fuel nozzle cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100524209A CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol cracker fuel nozzle cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101240736A true CN101240736A (en) | 2008-08-13 |
| CN101240736B CN101240736B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100524209A Expired - Fee Related CN101240736B (en) | 2008-03-12 | 2008-03-12 | Methanol cracker fuel nozzle cooling device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8567435B2 (en) | 2006-08-24 | 2013-10-29 | Global Valve Technology Limited | Centreline flow valve |
-
2008
- 2008-03-12 CN CN2008100524209A patent/CN101240736B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8567435B2 (en) | 2006-08-24 | 2013-10-29 | Global Valve Technology Limited | Centreline flow valve |
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| Publication number | Publication date |
|---|---|
| CN101240736B (en) | 2011-04-27 |
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Granted publication date: 20110427 Termination date: 20120312 |