CN100582006C - Internals assembling method for sole weight enclosed type converter - Google Patents
Internals assembling method for sole weight enclosed type converter Download PDFInfo
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- CN100582006C CN100582006C CN200710049625A CN200710049625A CN100582006C CN 100582006 C CN100582006 C CN 100582006C CN 200710049625 A CN200710049625 A CN 200710049625A CN 200710049625 A CN200710049625 A CN 200710049625A CN 100582006 C CN100582006 C CN 100582006C
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Abstract
The present invention discloses process of assembling dead weight sealed members inside a synthetic tower. The process includes hoisting and assembling the catalyst frame casing, the middle catalyst frame, the middle heat exchanger, the upper catalyst frame and the upper heat exchanger successively into the housing of the synthetic tower. The process features that before each of the catalyst frames is set on corresponding connecting ring and assembled into the catalyst frame casing, the lower end surface is machined into sealed surface fitting the connecting ring. The synthetic tower assembled in the modified process has no driftage and leakage of medium, and raised synthetic ammonia output.
Description
Technical field
The present invention relates to internals assembling method for sole weight enclosed type converter, be applicable to and adopt the self gravity sealing type ammonia converter internals to produce production equipments such as synthetic ammonia or methyl alcohol.
Technical background
The synthetic tower of large-scale synthetic ammonia or methyl alcohol product installation, bulky, as produce the synthetic tower of 200,000 tons of synthetic ammonia per year, highly above 7 meters, its internals are made of catalyst frame shell, catalyst frame, interchanger combination, wherein, catalyst frame is designed to three sections of upper, middle and lower, and hypomere catalyst frame and shell are that combination is the formula one-piece construction.Three sections catalyst frame are intersegmental by the shack connection, rely on the catalyst frame self gravitation to laminate sealing.Though this structure can reduce difficulty of processing and be convenient to load catalyst, also brings new problem, promptly morpheme, the dimension precision requirement to trim is all very high, and for this large-sized workpiece, complete processing and device all are difficult to meet the demands.Because shack and catalyst frame shell are the branch body structures, processing respectively earlier, assembling is welded again, so the accuracy of form and position, dimensional precision are not really high.Since the catalyst frame cylindrical shell be by steel plate roll, rivet welding forms, again because of diameter is bigger, it is big to exist distortion inevitably, make this cylindrical shell bottom trim undulate, and the planeness of this face is also very poor, causes catalyst frame to tilt, and causes the medium bias current.Although the angle of inclination is very little, because the synthetic tower height surpasses 7 meters, the eccentric absolute dimension in catalyst frame top is still very big, and the medium bias current is serious, reduces the production efficiency of device.If when mounted with the catalyst frame centering, concentric with shell, then Di Bu trim the gap can occur again, causes the dielectric leakage short circuit, reduces catalytic effect.As seen, bias current, leakage are a pair of implacable contradiction, turn round and look at this and then lose that, can not get both, and the user can only select one.
In addition, because of the diameter of shack is big, thin thickness, when welding with the catalyst frame shell, easy deformation, the trim unfairness also can cause the dielectric leakage short circuit, reduces catalytic effect.
At present, each user still assembles this ammonia converter internals according to conventional procedure, does not take technical measures to address the above problem.
Summary of the invention
Purpose of the present invention provides a kind of assembly method of self gravity sealing type ammonia converter internals, and this method can address the above problem preferably.
Technical solution of the present invention is:
A kind of internals assembling method for sole weight enclosed type converter, in order catalyst frame shell, middle part catalyst frame, middle part interchanger, top catalyst frame, top interchanger are lifted in the synthetic tower shell, each catalyst frame places respectively on its corresponding shack, it is characterized in that: before each catalyst frame of packing into, all the trim that coincide substantially with the shack upper surface is processed in its lower surface.
Describedly the trim that coincide with the shack upper surface be processed in the catalyst frame lower surface comprise step:
(1) catalyst frame is placed centering on the shack, make it concentric with the catalyst frame shell;
(2) circumferentially mark off some measurement point along the catalyst frame lower surface, measure the gap size of each measurement point;
(3) according to take off data processing catalyst frame lower surface.
Described processing comprises the steps:
1. according to take off data calculating processing amount;
2. with metal cutting device cutting catalyst frame bottom trim;
3. check morpheme, the dimensional precision of this machined surface whether to meet the requirements, if not, then continue processing, up to meeting the requirements.
Described trim is lined with gasket.
Described gasket is a flexible pad.
The invention has the beneficial effects as follows: because catalyst frame bottom trim is processed into the trim adaptive with shack, catalyst frame is concentric with the catalyst frame shell, and medium can bias current, the production efficiency height; Trim contact is good, and at the trim pad flexible gasket, good seal, medium can leakage shorts, excellent catalytic effect.Be used for synthetic ammonia, output improves about 15%.
Description of drawings
Fig. 1 is the structure diagram of self gravity sealing type ammonia converter internals.
Fig. 2 is the connection detail (being I part enlarged view among Fig. 1) of sealed faying face between the shack of catalyst frame and catalyst frame shell.
Code name implication among the figure: 1-top catalyst frame shell; The 2-gasket; The 3-shack; The 4-thermal insulation layer; The 5-porous plate; 6-middle part catalyst frame shell; 7-middle part catalyst frame; 8-ripple sparger; The 9-catalyst; The 10-interchanger; 11-synthetic tower shell; 12,13-thermocouple sheath; Perforated tube in the 14-; Effuser in the 15-; 16-interchanger cylindrical shell; 17-synthetic tower pipe core.
Embodiment
Before the explanation assembly method, be necessary to introduce earlier the structure of synthetic tower, so that understand the present invention easily.
Referring to Fig. 1, Fig. 2: three sections catalyst frame in total upper, middle and lower in the synthetic tower shell 11, it shown in the figure stage casing, it is made up of catalyst frame shell 6, catalyst frame 7, the inwall of catalyst frame shell 6 has thermal insulation layer 4, shack 3 is arranged at the bottom, catalyst frame 7 places on the shack 3, the mating surface of the two palpus good seal, otherwise gas blowby can take place.
The main points of this assembly method are: in order the self gravity sealing type ammonia converter internals is assemblied in the synthetic tower shell; Before each catalyst frame of packing into, all the trim that coincide substantially with the shack upper surface is processed in its lower surface.
Installation step is in detail:
1. catalyst frame shell 6 (the catalyst frame shell becomes an integral body with the assembling of bottom catalyst frame, assembly welding) is lifted in the synthetic tower shell 11, connection orientation is pressed in the orientation, detects the radial clearance of 11 on catalyst frame shell 6 and synthetic tower shell, and it is adjusted evenly.
2. assemble middle part catalyst frame 7:
(1). check, measure the roughness of each point on the planeness, circumference of catalyst frame cylindrical shell lower surface, middle part (trim) and note down.
(2). middle part catalyst frame 7 is packed in the catalyst frame shell 6, and the orientation is consistent with connection orientation.The relative position of middle part catalyst frame 7 in catalyst frame shell 6 done accurately to adjust (adopt catalyst frame cylindrical shell bottom pad taper liner is controlled ways such as its upper end level), make catalyst frame with the catalyst frame shell radial clearance uniformity between coaxial and shell.
(3). measure on the trim circumference of 3 of basket cylindrical shell lower surface, middle part and shacks the each point gap and perform record.Answer the each point unanimity in theory, sealing place top and bottom are not only parallel but also very close to each other or difference is minimum.Since the catalyst frame cylindrical shell be by steel plate roll, rivet welding forms, again because of diameter is bigger, it is big to exist distortion inevitably, make the irregular cycle of this cylindrical shell bottom trim undulate, and the planeness of this face is also very poor, uneven; Equally for the trim of the shack 3 of catalyst frame shell, also exist irregular welding distortion (this shack 3 is the roll of steel plate rounding tube welding of processing back with the diagram two ends), the planeness of sealing face equally also difficulty reaches seal request; Therefore can find after the trial assembly that the each point gap is very inconsistent on the trim circumference.
(4). hang out the middle part basket 7, according to (3) measuring result targetedly to lower surface precision work again.Because of it is that rivet welding spare, distortion are big and irregular, accurate centering, and its diameter is big, cylindrical shell thin again (general thickness is below the 18mm), and machining deformation is equally also big, and trim is identical substantially after the precision work.
(5). the middle part basket 7 after will processing again, outside tower, measure the roughness at circumference each point place, lower surface earlier, and perform record; Then it is hung in the tower, repeat aforementioned (2), (3), (4) step, till qualified.
(6). according to the detection case of step (4) or (5) and the graphical record of being done, the sealing bonding surface is handled, eliminated uneven slit with the method that increases local self-regulated flexible gasket.During processing, according to size, the length in slit, the 2 pairs of sealed faying faces of local self-regulated flexible gasket with respective thickness carry out encapsulation process respectively; Finish dealing with the back to trim circumference each point measurement clearance and perform record once more.(7) hang out the middle part basket.Put the gasket seal (spirally wound gasket) of requirement in the junction of Fig. 2, again middle part basket 7 is hung in the tower, install the middle part basket by aforementioned (2).
3. assemble middle part interchanger 10.
4. assemble the top catalyst frame.The assembly method of top catalyst frame and requirement are with the middle part catalyst frame.
5. assemble the top interchanger.
6. assemble thermocouple sheath (12,13), the big lid of synthetic tower and thermopair.The orientation is by the technology connection orientation.
Claims (5)
1. internals assembling method for sole weight enclosed type converter, in order catalyst frame shell, middle part catalyst frame, middle part interchanger, top catalyst frame, top interchanger are lifted in the synthetic tower shell, each catalyst frame places respectively on its corresponding shack, it is characterized in that, before each catalyst frame of packing into, all the trim that coincide substantially with the shack upper surface is processed in its lower surface.
2. internals assembling method for sole weight enclosed type converter according to claim 1 is characterized in that, describedly the trim that coincide with the shack upper surface is processed in the catalyst frame lower surface comprises step:
(1) catalyst frame is placed centering on the shack, make it concentric with the catalyst frame shell;
(2) circumferentially mark off some measurement point along the catalyst frame lower surface, measure the gap size of each measurement point;
(3) according to take off data processing catalyst frame lower surface.
3. internals assembling method for sole weight enclosed type converter according to claim 2 is characterized in that, described step (3) processing catalyst frame lower surface comprises step:
1. according to take off data calculating processing amount;
2. with metal cutting device cutting catalyst frame bottom trim;
3. check morpheme, the dimensional precision of this machined surface whether to meet the requirements, if not, then continue processing, up to meeting the requirements.
4. internals assembling method for sole weight enclosed type converter according to claim 1 is characterized in that described trim is lined with gasket.
5. internals assembling method for sole weight enclosed type converter according to claim 4 is characterized in that described gasket is a flexible pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710049625A CN100582006C (en) | 2007-07-30 | 2007-07-30 | Internals assembling method for sole weight enclosed type converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710049625A CN100582006C (en) | 2007-07-30 | 2007-07-30 | Internals assembling method for sole weight enclosed type converter |
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| Publication Number | Publication Date |
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| CN101134578A CN101134578A (en) | 2008-03-05 |
| CN100582006C true CN100582006C (en) | 2010-01-20 |
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| CN200710049625A Active CN100582006C (en) | 2007-07-30 | 2007-07-30 | Internals assembling method for sole weight enclosed type converter |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188580Y (en) * | 1993-10-31 | 1995-02-01 | 葛梓年 | Ammonia synthesis tower inner parts |
| US20030211026A1 (en) * | 2000-03-03 | 2003-11-13 | Moore Dewey Oren | Ammonia synthesis process and apparatus for use therein |
| CN2699987Y (en) * | 2004-04-30 | 2005-05-18 | 兖矿鲁南化肥厂 | Upper sealed structure member for ammonia synthesis tower internal member |
-
2007
- 2007-07-30 CN CN200710049625A patent/CN100582006C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188580Y (en) * | 1993-10-31 | 1995-02-01 | 葛梓年 | Ammonia synthesis tower inner parts |
| US20030211026A1 (en) * | 2000-03-03 | 2003-11-13 | Moore Dewey Oren | Ammonia synthesis process and apparatus for use therein |
| CN2699987Y (en) * | 2004-04-30 | 2005-05-18 | 兖矿鲁南化肥厂 | Upper sealed structure member for ammonia synthesis tower internal member |
Non-Patent Citations (4)
| Title |
|---|
| ⅢJ-99型Φ1200氨合成塔内件的安装. 封少军.中氮肥，第1期. 1999 |
| ⅢJ-99型Φ1200氨合成塔内件的安装. 封少军.中氮肥，第1期. 1999 * |
| 对氨合成塔内件的评价. 王喜晶.中氮肥，第2期. 1997 |
| 对氨合成塔内件的评价. 王喜晶.中氮肥，第2期. 1997 * |
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| CN101134578A (en) | 2008-03-05 |
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