CN101881566A - Air cooler - Google Patents
Air cooler Download PDFInfo
- Publication number
- CN101881566A CN101881566A CN 201010205298 CN201010205298A CN101881566A CN 101881566 A CN101881566 A CN 101881566A CN 201010205298 CN201010205298 CN 201010205298 CN 201010205298 A CN201010205298 A CN 201010205298A CN 101881566 A CN101881566 A CN 101881566A
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- CN
- China
- Prior art keywords
- tube bank
- rearmounted
- preposition
- aerial cooler
- tube
- 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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Abstract
The invention relates to an air cooler, which is provided with a front tube bundle and a rear tube bundle in the entire tube pass material flowing direction, wherein the front tube bundle is connected with the rear tube bundle in series. The front tube bundle and the rear tube bundle of the air cooler are in different working environments and can be made of different materials. Particularly, when the air cooler is used for cooling hydrogenated effluent of a hydrocarbon hydrogenation device, flushing water is added on a passage part between the front tube bundle and the rear tube bundle to reduce the convent of water in medium in the front tube bundle, thereby reducing hydrogen sulfide-ammonia-hydrogen-water corrosion formed by the medium in the front tube bundle and improving the heat transfer efficiency of the front tube bundle.
Description
Technical field
The present invention relates to a kind of aerial cooler, on whole tube side stream flow direction, have preposition tube bank and rearmounted tube bank, preposition tube bank and rearmounted tube bank are series relationship.Especially, when aerial cooler of the present invention is used as hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler, on the passage component between preposition tube bank and the rearmounted tube bank, flushing water is set and adds inlet.
Background technology
Hydrogenation reaction effluent injects washings, and purpose is the ammonia that absorbs in the hydrogenation reaction effluent, prevents that ammonia concentration is too high, gather at reaction system, reduce catalyst activity, the ammonia concentration control in the recycle hydrogen is low more good more usually, generally be not more than 200PPm, preferably be not more than 50PPm; And the inevitable absorbing hydrogen sulphide of the aqueous solution behind the absorption ammonia can prevent that the hydrogenation reaction effluent process that cools from forming sulphur hydrogenation ammonia or heat exchanger channel increase system pressure drop is stopped up in the crystallization of many sulphur ammonia, and this is to use second purpose of washings.
Hydrogenation reaction effluent washings injection rate need satisfy following requirement: washings form vapour phase water and liquid phase water after injecting hydrogenation reaction effluent, the liquid phase water yield must be greater than zero, be preferably the washings total amount 30% or more, to prevent that water from vaporizing entirely, form acid mist in follow-up condensation process.
With regard to hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler, usually operating condition is: pressure is 1.0～22MPa, the tube side inlet temperature is 90～220 ℃ (can reach 250～350 ℃ during the reaction system emergency relief), the tube side outlet temperature is 30～60 ℃ (can reach 150～250 ℃ during the reaction system emergency relief), hydrogenation reaction effluent contains hydrogen sulfide--ammonia--hydrogen, usually hydrogenation reaction effluent aerial cooler inlet has added flushing water, and the vaporization rate of the flushing water that adds generally is not less than 80%, usually less than 60%, at this moment,--ammonia--hydrogen--the aqueous corrosion environment that formed hydrogen sulfide in the hydrogenation reaction effluent aerial cooler tube bank.The allocation plan that above-mentioned hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler adopts at present is monolithic or multi-disc (being generally the even number sheet) scheme in parallel,
For above-mentioned hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler, in most cases, contain ammonia, hydrogen sulfide, hydrogen in the hydrocarbon hydrogenation device hydrogenation reaction effluent, before hydrogenation reaction effluent enters aerial cooler, usually inject flushing water, because in most cases, the aerial cooler inlet temperature is higher than the ammonium salt crystallization temperature far away, the technical scheme of using at present of annotating flushing water before aerial cooler tube bank inlet, cause following harmful or adverse effect to hydrogenation plant hydrogenation reaction effluent aerial cooler:
1. reduce the temperature of " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place " interior medium, reduced heat transfer temperature difference;
2.--ammonia--hydrogen--aqueous corrosion environment has quickened corrosion to make " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place " interior medium form hydrogen sulfide in advance;
3. few to water content in hydrogenation reaction effluent occasion makes medium in " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place "--oil--water three-phase corrosive environment that forms gas in advance, has quickened corrosion;
4. hydrogenation reaction effluent air cooler, when hydrogenation reaction part emergency relief, the tube side gateway temperature difference is bigger, and the thermal expansion elongation that pipe produces is bigger, and the thermal expansion elongation difference that different pipe array of pipes produce is bigger, and therefore the making to equipment proposes higher requirement;
5. existing hydrogenation reaction effluent air cooler, fore heat exchanger tube zone, many corrosivity faults take place, when many corrosivity faults takes place in a large amount of heat exchanger tubes in front portion zone, usually the independent tube bank of full wafer (whole) is extractd from heat exchange process, make the normal heat exchanger tube at rear portion can't bring into play the heat exchange effect, may cause device to reduce treating capacity.If keep the normal process amount, the flow velocity of medium will increase in the air cooler tube bundle in then using, for the less occasion of tube bank number, the flow velocity of medium will increase even be in high corrosion rate flow rates significantly in the air cooler tube bundle in then using, shorten the air cooler tube bundle life-span, threaten the device security of operation.
The problems referred to above, the high occasion of concentration of hydrogen sulfide is more obvious in hydrogenation reaction effluent.
The objective of the invention is to propose a kind of aerial cooler, address the above problem, similar techniques is not appeared in the newspapers.
Summary of the invention
A kind of aerial cooler of the present invention is characterized in that: on whole tube side stream flow direction, have preposition tube bank and rearmounted tube bank, preposition tube bank and rearmounted tube bank are series relationship.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank are arranged in juxtaposition or arrange up and down.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank arrange that up and down preposition tube bank is positioned at the top.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank arranged superposed, common preposition tube bank is positioned at the top.
Feature of the present invention further is: the ratio (A/B) of preposition tube bank heat exchange area A (in tube bank parent tube heat exchange area) and rearmounted tube bank heat exchange area B (in tube bank parent tube heat exchange area) is generally 0.1～0.9, is generally 0.15～0.45.
Feature of the present invention further is: rearmounted tube bank is provided with flushing water and adds inlet.
Feature of the present invention further is: on the passage component between preposition tube bank and the rearmounted tube bank flushing water is set and adds inlet, preferably flushing water adds on the passage between inlet and rearmounted the tube bank blender is set.
Aerial cooler of the present invention is particularly suitable for hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler, such as based on the hydrocarbon hydrogenation device of coal tar hydrogenation reaction effluent aerial cooler.
The specific embodiment
Aerial cooler of the present invention is aerial cooler or Air-cooled Heat Exchanger or the air cooler that commercial plant uses, and is to be the heat-exchange device that heat exchange is carried out in the interior heat release logistics of cooling medium and heat exchanger tube with air.
Aerial cooler of the present invention, the basic element of character are tube bank, blower fan, framework, and accessory is shutter, air duct, ladder, platform and the spray equipment that may exist.
Aerial cooler of the present invention, tube bank is made up of heat exchanger tube and bobbin carriage.
A kind of aerial cooler of the present invention is characterized in that: on whole tube side stream flow direction, have preposition tube bank and rearmounted tube bank, preposition tube bank and rearmounted tube bank are series relationship.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank are arranged in juxtaposition or arrange up and down.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank arrange that up and down preposition tube bank is positioned at the top.
Feature of the present invention further is: preposition tube bank and rearmounted tube bank arranged superposed, common preposition tube bank is positioned at the top.
Feature of the present invention further is: the ratio (A/B) of preposition tube bank heat exchange area A (in tube bank parent tube heat exchange area) and rearmounted tube bank heat exchange area B (in tube bank parent tube heat exchange area) is generally 0.1～0.9, is generally 0.15～0.45.
Feature of the present invention further is: rearmounted tube bank is provided with flushing water and adds inlet.
Feature of the present invention further is: on the passage component between preposition tube bank and the rearmounted tube bank flushing water is set and adds inlet, preferably flushing water adds on the passage between inlet and rearmounted the tube bank blender is set.
Aerial cooler of the present invention, except that the tube bank parts, other parts are preferably shared.
Aerial cooler of the present invention when preposition tube bank and rearmounted tube bank are arranged in juxtaposition, preferably is provided with air duct respectively, is convenient to control the stability that air flows in preposition tube bank and the rearmounted tube bank, and other parts are preferably shared.
Aerial cooler of the present invention is particularly suitable for hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler, such as based on the hydrocarbon hydrogenation device of coal tar hydrogenation reaction effluent aerial cooler.
Compare with conventional aerial cooler, aerial cooler advantage of the present invention is:
1. keep the temperature of " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place " interior medium, effectively utilized heat transfer temperature difference;
2.--ammonia--hydrogen--aqueous corrosion environment has slowed down corrosion to avoid " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place " interior medium to form in advance hydrogen sulfide;
3. the occasion few to water content in the hydrogenation reaction effluent makes " the preposition tube bank of the air cooler of ammonium salt crystallization can not take place " interior medium--oil--water three-phase corrosive environment of avoiding forming in advance gas, slowed down corrosion;
4. aerial cooler of the present invention, preposition tube bank can select different materials to adapt to different media environments with rearmounted tube bank easily, can cost saving;
5. hydrogenation reaction effluent air cooler, when hydrogenation reaction part emergency relief, the tube side gateway temperature difference is bigger, the present invention is because using two tube banks, reduced the single tube bank tube side gateway temperature difference, therefore reduced the equipment making difficulty, can save cost, improve device security;
6. aerial cooler of the present invention, preposition tube bank and rearmounted tube bank are essentially the split relation, when preposition tube bank is broken down, can extract from heat exchange process easily, make rearmounted tube bank continue performance heat exchange effect. For convenience practical operation, preferably arrange can the requirement of flexible adaptation aforesaid operations pipe-line system.
Claims (18)
1. aerial cooler is characterized in that: on whole tube side stream flow direction, have preposition tube bank and rearmounted tube bank, preposition tube bank and rearmounted tube bank are series relationship.
2. aerial cooler according to claim 1 is characterized in that: preposition tube bank and rearmounted tube bank are arranged in juxtaposition.
3. aerial cooler according to claim 1 is characterized in that: preposition tube bank and rearmounted tube bank are arranged up and down.
4. aerial cooler according to claim 3 is characterized in that: preposition tube bank is positioned at the top.
5. aerial cooler according to claim 3 is characterized in that: preposition tube bank and rearmounted tube bank arranged superposed.
6. aerial cooler according to claim 5 is characterized in that: preposition tube bank is positioned at the top.
7. aerial cooler according to claim 1 is characterized in that: the ratio (A/B) of preposition tube bank heat exchange area A (in tube bank parent tube heat exchange area) and rearmounted tube bank heat exchange area B (in tube bank parent tube heat exchange area) is 0.1～0.9.
8. aerial cooler according to claim 7 is characterized in that: ratio (A/B) is 0.15～0.45.
9. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described aerial coolers, it is characterized in that: aerial cooler is the pressure-air cooler.
10. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described methods, it is characterized in that: aerial cooler is a hydrocarbon hydrogenation device hydrogenation reaction effluent aerial cooler.
11. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described methods, it is characterized in that: aerial cooler is based on the hydrocarbon hydrogenation device of coal tar hydrogenation reaction effluent aerial cooler.
12. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described methods, it is characterized in that: rearmounted tube bank is provided with flushing water and adds inlet.
13., it is characterized in that: on the passage component between preposition tube bank and the rearmounted tube bank, flushing water is set and adds inlet according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described methods.
14. method according to claim 10 is characterized in that: rearmounted tube bank is provided with flushing water and adds inlet.
15. method according to claim 10 is characterized in that: on the passage component between preposition tube bank and the rearmounted tube bank, flushing water is set and adds inlet.
16. method according to claim 11 is characterized in that: rearmounted tube bank is provided with flushing water and adds inlet.
17. method according to claim 11 is characterized in that: on the passage component between preposition tube bank and the rearmounted tube bank, flushing water is set and adds inlet.
18. according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 described methods, it is characterized in that: on the passage component between preposition tube bank and the rearmounted tube bank flushing water is set and adds inlet, flushing water adds on the passage between inlet and rearmounted the tube bank blender is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102052981A CN101881566B (en) | 2010-06-11 | 2010-06-11 | Air cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102052981A CN101881566B (en) | 2010-06-11 | 2010-06-11 | Air cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101881566A true CN101881566A (en) | 2010-11-10 |
| CN101881566B CN101881566B (en) | 2012-07-04 |
Family
ID=43053638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102052981A Active CN101881566B (en) | 2010-06-11 | 2010-06-11 | Air cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101881566B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1183376A (en) * | 1997-09-10 | 1999-03-26 | Sanden Corp | Manufacture of multitubular heat exchanger |
| JP2002013840A (en) * | 2000-06-30 | 2002-01-18 | Toyo Radiator Co Ltd | Parallel flow type heat exchanger for air-conditioning |
| WO2004102103A2 (en) * | 2003-05-15 | 2004-11-25 | Valeo Thermique Moteur | Heat exchanger which is intended, in particular, for a motor vehicle |
| US20040244957A1 (en) * | 2003-03-26 | 2004-12-09 | Torahide Takahashi | Heat exchanger |
| CN201302395Y (en) * | 2008-11-18 | 2009-09-02 | 中国石化扬子石油化工有限公司 | Hydrogenation-reaction outflow tube-bundle system of air cooler for machining chloric raw oil |
| CN101655336A (en) * | 2009-07-27 | 2010-02-24 | 浙江理工大学 | Optimization method of water injection for hydrogenation reaction outflow air-cooler system |
-
2010
- 2010-06-11 CN CN2010102052981A patent/CN101881566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1183376A (en) * | 1997-09-10 | 1999-03-26 | Sanden Corp | Manufacture of multitubular heat exchanger |
| JP2002013840A (en) * | 2000-06-30 | 2002-01-18 | Toyo Radiator Co Ltd | Parallel flow type heat exchanger for air-conditioning |
| US20040244957A1 (en) * | 2003-03-26 | 2004-12-09 | Torahide Takahashi | Heat exchanger |
| WO2004102103A2 (en) * | 2003-05-15 | 2004-11-25 | Valeo Thermique Moteur | Heat exchanger which is intended, in particular, for a motor vehicle |
| CN201302395Y (en) * | 2008-11-18 | 2009-09-02 | 中国石化扬子石油化工有限公司 | Hydrogenation-reaction outflow tube-bundle system of air cooler for machining chloric raw oil |
| CN101655336A (en) * | 2009-07-27 | 2010-02-24 | 浙江理工大学 | Optimization method of water injection for hydrogenation reaction outflow air-cooler system |
Non-Patent Citations (3)
| Title |
|---|
| 《石化技术与应用》 20100531 李子涛等 "蜡油加氢处理装置高压空气冷却器腐蚀分析及预防措施" 全文 1-18 第28卷, 第3期 2 * |
| 《石油化工腐蚀与防护》 20090430 谭金龙等 "加氢裂化装置高压空气冷却器的腐蚀失效分析" 全文 1-18 第26卷, 第2期 2 * |
| 《石油炼制与化工》 20090630 张毅等 "加氢裂化高压空冷器的防腐分析与措施" 全文 1-18 第40卷, 第6期 2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101881566B (en) | 2012-07-04 |
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