JPS6038334B2 - Equipment for generating steam in an ammonia synthesis plant - Google Patents
Equipment for generating steam in an ammonia synthesis plantInfo
- Publication number
- JPS6038334B2 JPS6038334B2 JP56190936A JP19093681A JPS6038334B2 JP S6038334 B2 JPS6038334 B2 JP S6038334B2 JP 56190936 A JP56190936 A JP 56190936A JP 19093681 A JP19093681 A JP 19093681A JP S6038334 B2 JPS6038334 B2 JP S6038334B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- chamber
- gas
- steam
- gas inlet
- 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.)
- Expired
Links
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims description 17
- 229910021529 ammonia Inorganic materials 0.000 title claims description 4
- 230000015572 biosynthetic process Effects 0.000 title claims description 4
- 238000003786 synthesis reaction Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000006396 nitration reaction Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008602 contraction Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/02—Preparation, purification or separation of ammonia
- C01C1/04—Preparation of ammonia by synthesis in the gas phase
- C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
- C01C1/0447—Apparatus other than synthesis reactors
- C01C1/0452—Heat exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/021—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers with heating tubes in which flows a non-specified heating fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、管板に取付けたＵ字管の高圧アンモニアガス
と該Ｕ字管を取巻く水−蒸気室の高圧の水または蒸気と
の間の熱交換によりアンモニア合成プラント用蒸気発生
装置にして、高温アンモニアガスを該Ｕ字管に供給する
ためにガス入口室と、該ガス入口室を取巻くガス出口室
と、該水一蒸気室を該ガス入口室及びガス出口室から分
離する管板とを含む該蒸気発生装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a method for reducing the amount of water or steam between high-pressure ammonia gas in a U-shaped tube attached to a tube sheet and high-pressure water or steam in a water-steam chamber surrounding the U-shaped tube. In order to supply high temperature ammonia gas to the U-shaped pipe, a gas inlet chamber, a gas outlet chamber surrounding the gas inlet chamber, and a water-steam chamber are connected to each other. The steam generation apparatus includes a gas inlet chamber and a tube sheet separate from the gas outlet chamber.
かかる技術において、管板及びＵ字管に抗ニトロ化材料
を使用したものが知られている（西ドイツ特許第２００
７５２８号）。In this technology, the use of anti-nitration materials in the tube sheet and the U-tube is known (West German Patent No. 200
No. 7528).
しかしながら抗ニトロ化材料は、水側における応力亀裂
腐食に対してデリケートで傷つき易い。However, anti-nitration materials are delicate and susceptible to stress crack corrosion on the water side.
このような腐食に対してはフェライト鋼が強い。しかし
このフェライト鋼は抗ニトロ化性を有しない等の欠点が
あった。そこで本発明の目的は、応力亀裂腐食に対して
強いフェライト鋼を材料として使用して、しかもニトロ
化の問題を克服し得たアンモニア合成プラント用蒸気発
生装道を提供せんとするにある。Ferritic steel is resistant to this type of corrosion. However, this ferritic steel had drawbacks such as not having anti-nitration properties. SUMMARY OF THE INVENTION An object of the present invention is to provide a steam generation system for an ammonia synthesis plant that uses ferritic steel, which is resistant to stress crack corrosion, as a material and can overcome the problem of nitration.
〔問題点を解決するための手段〕本発明は、上記目的を
達成するため、管板に取付けたＵ字管の高圧アンモニア
ガスと該Ｕ字管を取巻く水−蒸気室の高圧の水または蒸
気との間の熱交換によるアンモニア合成プラント用蒸気
発生装置にして、高温アンモニアガスを該Ｕ字管に供給
するためのガス入口室と、該ガス入口室を取巻くガス出
口室と、該水−蒸気室を該ガス入口室及びガス出口室か
ら分離する管板とを含み、該ガス入口室が該管板より離
隔して配置され、該ガス入口室の一端に高温アンモニア
ガスをガス入口室から該Ｕ字管に供給する差込管を溶接
し、該差込管の池端を該Ｕ字管に緩挿し、該差込管に該
Ｕ字管の内面にガス密に接触する拡開部を設けたことを
特徴とする該蒸気発生装置を提供しようとするものであ
る。[Means for Solving the Problems] In order to achieve the above object, the present invention provides high-pressure ammonia gas in a U-shaped tube attached to a tube plate and high-pressure water or steam in a water-steam chamber surrounding the U-shaped tube. A steam generator for an ammonia synthesis plant by heat exchange between a tubesheet separating the chamber from the gas inlet chamber and the gas outlet chamber, the gas inlet chamber being spaced apart from the tubesheet, and having hot ammonia gas at one end of the gas inlet chamber from the gas inlet chamber; A plug-in pipe that supplies the U-shaped pipe is welded, the end of the plug-in pipe is loosely inserted into the U-shaped pipe, and the plug-in pipe is provided with an expanded portion that comes into gas-tight contact with the inner surface of the U-shaped pipe. An object of the present invention is to provide a steam generator characterized by the following features.
以上のように急冷しても熱膨張収縮に対して融通性のあ
る構造を有するので、ニトロ化を回避するため高温アン
モニアガスの温度を降下させても熱に対して耐急性があ
るのでフェライト鋼を管板及びＵ字管に使用して応力亀
裂腐食に強い上記所要の蒸気発生装置を提供できたもの
である。As mentioned above, it has a structure that is flexible against thermal expansion and contraction even when rapidly cooled, so ferritic steel is resistant to heat even if the temperature of high-temperature ammonia gas is lowered to avoid nitration. By using this for the tube sheet and U-shaped tube, it was possible to provide the above-mentioned required steam generating device that is resistant to stress cracking and corrosion.
〔実施例〕以下に本発明の実施例を示す添付図面を参照
しつつ、本発明の諸特徴を更に詳述する。[Embodiments] Various features of the present invention will be described in further detail below with reference to the accompanying drawings showing embodiments of the present invention.
高温のアンモニアガスは、接続管１を介して前層された
抗ニトロ化性のガス入口室３内に矢印２方向で流入し、
更に矢印４方向でやはり抗ニトロ化性の差込管５内に達
する。The hot ammonia gas flows in the direction of the arrow 2 into the pre-layered anti-nitration gas inlet chamber 3 via the connecting pipe 1;
Further, in the direction of the arrow 4, a plug tube 5, which is also anti-nitration, is reached.
これらの差込管の一端は、前直されたガス入口室３に溶
接されており、その他端は、フェライト鋼材料から成る
Ｕ字管７の入口側端部内における拡開部６とガス密に連
結されている。フェライト鋼製の管板８内で溶接されて
いて水一義気室９内で水を洗われるＵ字管は、その入口
側端部で、差込管５と共に環状間隙ＩＱを形成し、これ
らの環状間隙は、水−蒸気室９内における拡関部６の位
置、状態に基づき、やはり水−蒸気室９にまで達する。
冷却されたアンモニアガスは、Ｕ字管７から矢印１１方
向でガス出口室１２へ排出され、更に矢印１３方向で接
続管１４を経てガス出口室１２を後にする。冷却水は、
接続管１６を通って矢印１５方向で水−蒸気室９内に導
入され、次いで蒸気の形をとって矢印１７方向で接続管
１８を通り、水−蒸気室９を後にする。One end of these plug-in tubes is welded to the straightened gas inlet chamber 3, and the other end is connected in a gas-tight manner to the widening 6 in the inlet end of the U-tube 7 made of ferritic steel material. connected. The U-tube, which is welded in a tube plate 8 made of ferritic steel and flushed in a water supply air chamber 9, forms an annular gap IQ with the plug-in tube 5 at its inlet end, and these The annular gap also reaches the water-steam chamber 9, depending on the position and state of the expansion part 6 within the water-steam chamber 9.
The cooled ammonia gas is discharged from the U-tube 7 in the direction of arrow 11 into the gas outlet chamber 12 and further leaves the gas outlet chamber 12 through the connecting pipe 14 in the direction of arrow 13. The cooling water is
It is introduced into the water-steam chamber 9 in the direction of the arrow 15 through the connecting pipe 16 and then leaves the water-steam chamber 9 in the direction of the arrow 17 in the form of steam through the connecting pipe 18.
第１図は本発明により装置の縦断面図、第２図は第１図
の０ーロ線に沿った断面図、第３図は第１図において一
点鎖線で取り囲まれた範囲×の拡大図である。
１，１４，１６，１８・・・・・・接続管、２，４，１
１，１３，１５，１７……矢印、３…・・・ガス入口室
、５・・…・差込管、６…・・・舷開部、７・・…・Ｕ
字管、８・…・・管板、９・・…・水−蒸気室、１０・
・・・・・環状間隙、１２・・・・・・ガス出口室。
Ｆ‘９，２
Ｆｉｇ，丁
Ｆｉ９，３Fig. 1 is a longitudinal sectional view of the device according to the present invention, Fig. 2 is a sectional view taken along the 0-Ro line in Fig. 1, and Fig. 3 is an enlarged view of the area x surrounded by the dashed line in Fig. 1. It is. 1, 14, 16, 18... Connection pipe, 2, 4, 1
1, 13, 15, 17...Arrow, 3...Gas inlet chamber, 5...Plug-in pipe, 6...Gender opening, 7...U
Shape tube, 8...Tube plate, 9...Water-steam room, 10...
... annular gap, 12 ... gas outlet chamber. F'9,2 Fig, DingFi9,3
Claims (1)
該Ｕ字管７を取巻く水−蒸気室９の高圧の水または蒸気
との間の熱交換によるアンモニア合成プラント用蒸気発
生装置にして、高温アンモニアガスを該Ｕ字管７に供給
するためのガス入口室３と、該ガス入口室３を取巻くガ
ス出口室１２と、該水−蒸気室９を該ガス入口室３及び
ガス出口室１２から分離する管板８とを含み、該ガス入
口室３が該管板８より離隔して配置され、該ガス入口室
３の一端に高温アンモニアガスをガス入口室３から該Ｕ
字管７に供給する差込管５を溶接し、該差込管５の他端
を該Ｕ字管に緩挿し、該差込管５に該Ｕ字管７の内面に
ガス密に接触する拡開部６を設けたことを特徴とする該
蒸気発生装置。1. A steam generator for an ammonia synthesis plant by heat exchange between high pressure ammonia gas in a U-shaped tube 7 attached to a tube plate 8 and high-pressure water or steam in a water-steam chamber 9 surrounding the U-shaped tube 7. , a gas inlet chamber 3 for supplying high-temperature ammonia gas to the U-shaped pipe 7, a gas outlet chamber 12 surrounding the gas inlet chamber 3, and a water-steam chamber 9 connected to the gas inlet chamber 3 and the gas outlet chamber. a tube sheet 8 separated from the gas inlet chamber 3, the gas inlet chamber 3 being spaced apart from the tube sheet 8, the gas inlet chamber 3 being spaced apart from the tube sheet 8;
A plug-in pipe 5 to be supplied to the U-shaped tube 7 is welded, and the other end of the plug-in pipe 5 is loosely inserted into the U-shaped tube, so that the plug-in tube 5 is brought into gas-tight contact with the inner surface of the U-shaped tube 7. The steam generator is characterized in that it is provided with an expanded portion 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3049409.8 | 1980-12-23 | ||
| DE3049409A DE3049409C2 (en) | 1980-12-23 | 1980-12-23 | Equipment for steam generation in ammonia synthesis plants |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57129821A JPS57129821A (en) | 1982-08-12 |
| JPS6038334B2 true JPS6038334B2 (en) | 1985-08-31 |
Family
ID=6120499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56190936A Expired JPS6038334B2 (en) | 1980-12-23 | 1981-11-30 | Equipment for generating steam in an ammonia synthesis plant |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS6038334B2 (en) |
| AT (1) | AT382705B (en) |
| DE (1) | DE3049409C2 (en) |
| ES (1) | ES506988A0 (en) |
| FR (1) | FR2496843B1 (en) |
| GB (1) | GB2089951B (en) |
| IT (1) | IT1140363B (en) |
| NL (1) | NL180134C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3302304A1 (en) * | 1983-01-25 | 1984-07-26 | Borsig Gmbh, 1000 Berlin | HEAT EXCHANGER FOR COOLING HOT GASES, ESPECIALLY FROM THE AMMONIA SYNTHESIS |
| DE3641710A1 (en) * | 1986-12-06 | 1988-06-16 | Uhde Gmbh | DEVICE FOR EXCHANGING HEAT BETWEEN A CIRCUIT GAS AND WATER LEAVING AN NH (DOWN ARROW) 3 (DOWN ARROW) CONVERTER |
| DE3642673C1 (en) * | 1986-12-13 | 1988-01-21 | Borsig Gmbh | Heat exchanger for cooling gases from ammonia synthesis |
| US5236671A (en) * | 1990-09-24 | 1993-08-17 | C. F. Braun, Inc. | Apparatus for ammonia synthesis |
| KR101562527B1 (en) | 2008-06-26 | 2015-10-22 | 할도르 토프쉐 에이/에스 | Process for the production of ammonia and steam superheater |
| DE102010040278A1 (en) * | 2010-09-06 | 2012-03-08 | Siemens Aktiengesellschaft | Heat exchanger e.g. steam generator used in nuclear plant, has perforated plate whose surface is divided into hot and cold regions, such that heat transfer medium flows through passages in opposite directions |
| EP2482020B2 (en) | 2011-01-31 | 2022-12-21 | Haldor Topsøe A/S | Heat exchanger |
| CN103344138A (en) * | 2013-07-15 | 2013-10-09 | 江苏七政新能源有限公司 | Multi-tube type cooler |
| CN104729824B (en) * | 2015-03-12 | 2017-06-30 | 中国科学院力学研究所 | A kind of heat-exchanger rig and its building method for cooling down High Mach number nozzle throat |
| DK3406999T3 (en) | 2017-05-26 | 2021-02-01 | Alfa Laval Olmi S P A | SMOKE PART HEAT EXCHANGER |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR927657A (en) * | 1946-06-05 | 1947-11-05 | Babcock & Wilcox France | Improvements to tubular heat exchangers |
| US3083833A (en) * | 1959-05-20 | 1963-04-02 | Bendix Corp | Fuel heater-filter combination |
| DE2007528C3 (en) * | 1970-02-19 | 1973-10-25 | Friedrich Uhde Gmbh, 4600 Dortmund | Device for heat exchange in ammonia synthesis plants |
| DE2804187C2 (en) * | 1978-02-01 | 1980-04-03 | L. & C. Steinmueller Gmbh, 5270 Gummersbach | Heat exchanger with hanging U-tubes embedded in a plate for cooling process gases under high pressure and high temperature |
| US4191246A (en) * | 1979-03-05 | 1980-03-04 | Combustion Engineering, Inc. | Device to reduce local heat flux through a heat exchanger tube |
-
1980
- 1980-12-23 DE DE3049409A patent/DE3049409C2/en not_active Expired
-
1981
- 1981-10-08 AT AT0432081A patent/AT382705B/en not_active IP Right Cessation
- 1981-10-21 NL NLAANVRAGE8104758,A patent/NL180134C/en not_active IP Right Cessation
- 1981-11-10 ES ES506988A patent/ES506988A0/en active Granted
- 1981-11-12 GB GB8134154A patent/GB2089951B/en not_active Expired
- 1981-11-24 FR FR8122002A patent/FR2496843B1/en not_active Expired
- 1981-11-30 JP JP56190936A patent/JPS6038334B2/en not_active Expired
- 1981-12-18 IT IT25674/81A patent/IT1140363B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT8125674A0 (en) | 1981-12-18 |
| NL8104758A (en) | 1982-07-16 |
| FR2496843A1 (en) | 1982-06-25 |
| GB2089951A (en) | 1982-06-30 |
| NL180134C (en) | 1987-01-02 |
| GB2089951B (en) | 1984-04-26 |
| ES8302882A1 (en) | 1982-12-16 |
| FR2496843B1 (en) | 1987-06-26 |
| AT382705B (en) | 1987-04-10 |
| ATA432081A (en) | 1986-08-15 |
| IT1140363B (en) | 1986-09-24 |
| ES506988A0 (en) | 1982-12-16 |
| NL180134B (en) | 1986-08-01 |
| JPS57129821A (en) | 1982-08-12 |
| DE3049409C2 (en) | 1983-12-01 |
| DE3049409A1 (en) | 1982-07-22 |
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