CN214320073U - Manhole and discharge opening connecting structure of high-temperature high-pressure reactor - Google Patents
Manhole and discharge opening connecting structure of high-temperature high-pressure reactor Download PDFInfo
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- CN214320073U CN214320073U CN202120077545.8U CN202120077545U CN214320073U CN 214320073 U CN214320073 U CN 214320073U CN 202120077545 U CN202120077545 U CN 202120077545U CN 214320073 U CN214320073 U CN 214320073U
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- heat insulation
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- insulation sleeve
- discharge opening
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Abstract
A manhole and discharge opening connecting structure of a high-temperature high-pressure reactor comprises a heat insulation sleeve, wherein a connecting cover plate positioned at a flange sealing surface is arranged at the top of the heat insulation sleeve, and the heat insulation sleeve is hoisted in a cavity of the manhole and discharge opening through the connecting cover plate; the bottom of the heat insulation sleeve is provided with a heat insulation lining, and a plurality of air holes for communicating the heat insulation sleeve with the interior of the reactor so as to ensure the pressure balance between the heat insulation sleeve and the interior of the reactor are arranged in the heat insulation lining; the outer wall of the heat insulation sleeve is provided with a plurality of guide positioning plates, the guide positioning plates are fixed on the outer wall of the heat insulation sleeve and are uniformly distributed along the circumferential direction, and the guide positioning plates are spaced from the inner wall of the discharge opening of the manhole by 2mm to form an installation gap; the actual working temperature of the manhole and the discharge opening corresponding to the flange cover is reduced, so that the design thickness of the flange cover is reduced, and the cost is saved.
Description
Technical Field
The utility model belongs to petrochemical adds splits reactor field, in particular to manhole and discharge opening connection structure of high temperature high pressure reactor.
Background
The petrochemical cracking reactor is the core equipment of the cracking device, and the operating conditions are quite harsh. The cracking reactor has two characteristics: (1) operating in a high temperature and high pressure environment; (2) hydrocracking is an exothermic reaction and the catalyst is relatively expensive. In the reaction process, the reaction heat is relatively large (about 630-840KJ/kg), the temperature of the bed layer is increased, the local overheating phenomenon can be caused, 12Cr2Mo1V + double-layer surfacing is generally selected according to the comprehensive consideration of the use working condition, the manufacturing technical requirement is high, and the manufacturing cost is high.
With the increase of market demand, the development trend of the reactor is towards high parameterization, large-scale and more complicated, and the design parameters are gradually increased, such as the design temperature of 430-454-482 ℃; the design pressure variation range is 17-23 MPa; the nominal diameter is 1400 mm-4400 mm, and the requirements of the inner member form, the feeding mode, the cold hydrogen distribution and the like of the reactor are more and more complicated. In order to meet the problems of the requirements of filling and internal part assembling, the nominal diameter of a manhole and a discharge port is increased. FIG. 1 shows a basic connection structure of a manhole and a discharge port of a reactor, and a pi D space in an inner wall2The catalyst/4. H has dead zone of material flow or is packed with the catalyst, the unit price of the catalyst is expensive, and the catalyst in the inner wall space cannot be fully utilized. The design thickness delta of the corresponding flange cover depends on the design temperature, the higher the design temperature is, the larger the thickness is, the larger the manufacturing difficulty coefficient is also increased, and finally, the whole manufacturing cost is increased.
Disclosure of Invention
In order to overcome the current not enough, the utility model aims to provide a thereby solve the manhole of the extravagant problem of the inside catalyst of reactor and discharge opening connection structure concurrently of blind spot that is used for reducing the manhole of high temperature high pressure reactor and concurrently discharge opening.
The utility model aims at adopting the following technical scheme to realize. According to the manhole and discharge opening connecting structure of the high-temperature high-pressure reactor, which is provided by the utility model, the connecting cover plate is arranged at the flange sealing surface of the top of the heat insulation sleeve, and the heat insulation sleeve is hoisted in the cavity of the manhole and discharge opening through the connecting cover plate; a gap is formed between the outer wall of the heat insulation sleeve and the inner wall of the manhole and the discharge opening, and a ceramic fiber rope is filled in the gap; the bottom of the heat insulation sleeve is provided with a heat insulation lining for preventing hot gas in the reactor from entering the interior of the heat insulation sleeve, and the heat insulation lining is internally provided with air holes for communicating the heat insulation sleeve with the interior of the reactor so as to ensure the pressure balance of the heat insulation sleeve and the interior of the reactor; the outer wall of the heat insulation sleeve is provided with a plurality of guide positioning plates which are uniformly distributed along the circumferential direction of the heat insulation sleeve.
Further, the distance between the outer wall of the heat insulation sleeve and the inner wall of the manhole and the discharge opening is 20mm, and the thickness of the heat insulation lining is 100 mm.
Further, a first lining baffle is arranged at the top of the heat insulation lining, and a second lining baffle is arranged at the bottom of the heat insulation lining.
Borrow by above-mentioned technical scheme, the utility model has the advantages that:
the utility model relates to a manhole and discharge opening connecting structure of a high-temperature high-pressure reactor, which can reduce the loading amount of catalyst and material flow dead zone and improve the utilization rate of the catalyst; the actual working temperature of the manhole and the discharge opening corresponding to the flange cover is reduced, so that the design thickness of the flange cover is reduced, the utilization rate of materials is improved, and the cost is saved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a basic connection structure of a manhole and a discharge port of a high-temperature high-pressure reactor.
Fig. 2 is a schematic view of the manhole and discharge opening connecting structure of the high-temperature high-pressure reactor of the present invention.
[ reference numerals ]
1-flange cover, 2-connecting cover plate, 3-flange, 4-heat-insulating sleeve, 5-first lining baffle, 6-second lining baffle, 7-guiding positioning plate, 8-manhole and discharge opening, 801-manhole and discharge opening inner wall, 9-reactor shell, 10-heat-insulating lining, 11-reactor inner wall and 12-air vent.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the objectives of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments of the present invention with reference to the detailed description of the manhole and discharge opening connecting structure of the high temperature and high pressure reactor, its specific embodiments, structures, features and effects.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1 and 2, a manhole and discharge opening connecting structure of a high-temperature high-pressure reactor includes a heat insulating sleeve 4 disposed in a cavity of a manhole discharge opening 8, and a high-alumina aluminum silicate refractory fiber felt is filled in the heat insulating sleeve 4; the top of the heat insulation sleeve 4 is provided with a connecting cover plate 2, the diameter of the connecting cover plate 2 is larger than that of the heat insulation sleeve 4, and the heat insulation sleeve 4 is hung in a cavity of the manhole discharge opening 8 through the connecting plate 2; a gap of 20mm is formed between the inner wall 801 of the manhole/discharge opening and the outer wall of the heat insulation sleeve 4, and the gap between the manhole discharge opening 8 and the heat insulation sleeve 4 is wound and compacted by a ceramic fiber rope; three guide positioning plates 7 convenient for installing the heat insulation sleeve are arranged on the outer wall of the heat insulation sleeve 4, one end of each guide positioning plate 7 is fixed on the outer wall of the heat insulation sleeve 4, a 2mm installation gap is reserved between the other end of each guide positioning plate 7 and the inner wall of the manhole discharge opening 8, the three guide positioning plates 7 are uniformly distributed along the circumferential direction of the heat insulation sleeve 4, the number of the guide positioning plates 7 is three in the embodiment, and the number of the guide positioning plates 7 can be set according to actual conditions in other embodiments of the invention; the bottom of the heat insulation sleeve 4 is in contact with the material in the reactor, the contact end is provided with a heat insulation lining 10 for separating hot gas in the reactor from the sleeve, and the thickness of the heat insulation lining is 100mm in the embodiment, of course, the thickness of the heat insulation lining 10 in other embodiments of the present invention can be set to other thicknesses according to actual conditions; the top of the heat insulation lining 10 is provided with a first lining baffle 5, and the bottom is provided with a second lining baffle 6; the inside of the heat insulating lining 10 is provided with the air holes 12 for communicating the heat insulating sleeve 4 with the inside of the reactor, so that the pressure balance between the heat insulating sleeve 4 and the inside of the reactor can be ensured, thereby reducing the thickness of the steel plate required for ensuring the strength.
In addition, due to the higher operating temperature of the reactor and the special characteristics of the operating medium, the material of the heat insulation sleeve 4, the connecting cover plate 2, the first lining baffle 5 and the second lining baffle 6 is high temperature corrosion resistant stainless steel such as S32168 or S34778.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art can easily modify, change or modify the above embodiments according to the technical spirit of the present invention without departing from the scope of the present invention.
Claims (4)
1. The utility model provides a high temperature high pressure reactor manhole and discharge opening connection structure which characterized in that: the heat insulation sleeve is arranged in a cavity of a manhole and a discharge opening in a hoisting mode through the connecting cover plate; a gap is formed between the outer wall of the heat insulation sleeve and the inner wall of the manhole and the discharge opening, and a ceramic fiber rope is filled in the gap; the bottom of the heat insulation sleeve is provided with a heat insulation lining for preventing hot gas in the reactor from entering the interior of the heat insulation sleeve, and the heat insulation lining is internally provided with air holes for communicating the heat insulation sleeve with the interior of the reactor so as to ensure the pressure balance of the heat insulation sleeve and the interior of the reactor; the outer wall of the heat insulation sleeve is provided with a plurality of guide positioning plates which are uniformly distributed along the circumferential direction of the heat insulation sleeve.
2. The manhole and discharge opening connecting structure of a high-temperature high-pressure reactor as claimed in claim 1, wherein: the distance between the outer wall of the heat insulation sleeve and the inner wall of the manhole and the discharge opening is 20 mm.
3. The manhole and discharge opening connecting structure of a high-temperature high-pressure reactor as claimed in claim 1, wherein: the thickness of the thermal liner was 100 mm.
4. The manhole and discharge opening connecting structure of a high-temperature high-pressure reactor as claimed in claim 1, wherein: the top of the heat insulation lining is provided with a first lining baffle, and the bottom of the heat insulation lining is provided with a second lining baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120077545.8U CN214320073U (en) | 2021-01-12 | 2021-01-12 | Manhole and discharge opening connecting structure of high-temperature high-pressure reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120077545.8U CN214320073U (en) | 2021-01-12 | 2021-01-12 | Manhole and discharge opening connecting structure of high-temperature high-pressure reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214320073U true CN214320073U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120077545.8U Active CN214320073U (en) | 2021-01-12 | 2021-01-12 | Manhole and discharge opening connecting structure of high-temperature high-pressure reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214320073U (en) |
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2021
- 2021-01-12 CN CN202120077545.8U patent/CN214320073U/en active Active
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