CN214426410U - Hydrogenation catalyst external regeneration kiln - Google Patents
Hydrogenation catalyst external regeneration kiln Download PDFInfo
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- CN214426410U CN214426410U CN202023255095.1U CN202023255095U CN214426410U CN 214426410 U CN214426410 U CN 214426410U CN 202023255095 U CN202023255095 U CN 202023255095U CN 214426410 U CN214426410 U CN 214426410U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
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Abstract
The utility model discloses an external regeneration kiln of a hydrogenation catalyst device, which is a mesh belt moving bed type flame-proof tunnel regeneration kiln, and the interior of the kiln is composed of a low-temperature preheating gas stripping section, a sulfur burning and coke burning section, a diffusion control section and a cooling section; the muffle tunnel regeneration furnace is provided with at least 3 pipe brackets; the pipe bracket comprises an inner protection pipe wrapped outside the flame-proof tunnel regenerator, a support pipe is welded at the bottom of the inner protection pipe, and the lower end of the support pipe is inserted into an outer sleeve arranged in the foundation structure to enable the outer wall of the lower end of the support pipe to be attached to the inner wall of the outer sleeve; a first heat-insulating layer, a hard heat-insulating layer and a second heat-insulating layer are sequentially arranged on the outer side of the inner protection pipe from inside to outside to form a composite heat-insulating layer, and a metal outer protective layer is arranged on the outer side of the composite heat-insulating layer; slotted holes are uniformly distributed on the side wall of the supporting tube, and soft heat-insulating materials are filled in the supporting tube. The utility model discloses a conduit saddle, fixed effectual has eliminated the heat bridge phenomenon that the ear seat formed simultaneously, has improved the thermal insulation performance of muffle tunnel regenerator, has reduced the natural gas consumption.
Description
Technical Field
The utility model relates to a hydrogenation catalyst ware external regeneration kiln.
Background
There are two ways of catalyst regeneration, one of which is catalyst ex-situ regeneration, i.e. catalyst is discharged and regenerated and pretreated in another dedicated apparatus. Therefore, the start-up period of the hydrogenation device can be prolonged, and the pressure drop of a bed layer can be reduced by sieving the catalyst; the regeneration outside the reactor can also be carefully operated, the loss of the activity of the catalyst is reduced, and the pollution generated by the regeneration and pretreatment of the catalyst can be intensively treated. The method develops the regenerated catalyst industry, increases the recycling strength of the waste catalyst resources, improves the utilization rate of the waste catalyst, relieves the contradiction between supply and demand of resources in China, implements the necessary requirements of a sustainable development strategy and the change of an economic growth mode, and completely accords with the development strategy of building an environment-friendly society in China.
At present, the applicant adopts a mesh belt moving bed type flame-proof tunnel regeneration furnace taking natural gas as fuel as main equipment for external regeneration of a hydrogenation catalyst, the furnace is composed of four temperature zones of a low-temperature preheating stripping section, a sulfur-burning and coke-burning section, a diffusion control section and a temperature reduction section, and the catalyst sequentially passes through the four temperature zones according to the mesh belt speed of 5-6 m/h; the moving speed of a material layer in the furnace is controlled, the spent catalyst is removed from hydrocarbon compounds in a low-temperature preheating gas stripping section, partial surface layer of the spent catalyst is subjected to oxidation combustion to complete heat release, and the sulfur and carbon deposits are conveyed into a sulfur-burning and coke-burning section of a regeneration furnace, sulfur and carbon in micropores of the spent catalyst are reacted under the aerobic condition by utilizing mild radiant heat, the whole process of coke burning regeneration is smoothly completed through a diffusion control section and a temperature reduction section, the phenomena of channeling overtemperature and sintering are avoided, the strength, the specific surface area and the pore volume of the catalyst are recovered, the regenerated catalyst particles are complete, dust and broken particles are few, and the activity of the catalyst is recovered to the maximum extent. Wherein the temperatures of the sulfur burning and coke burning section and the diffusion control section respectively reach 200-350 ℃ and 350-580 ℃. Although the regeneration furnace adopts a refractory heat-insulating material, the temperature difference between the inside and the outside of the regeneration furnace is large, so that heat loss is caused, and the consumption of natural gas is increased in order to maintain the temperature in the regeneration furnace; in addition, the regeneration furnace is generally fixed by using the lug seat, and the heat in the furnace can be further diffused through the lug seat.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is to provide a regenerator with pipe bracket that has heat preservation effect and fixed action to the heat bridge phenomenon of the current ear seat ubiquitous of "guipure moving bed" formula muffle tunnel regenerator.
The utility model aims at realizing through the following technical scheme:
a hydrogenation catalyst out-of-reactor regeneration kiln is a mesh belt moving bed type flame-proof tunnel regeneration furnace taking natural gas as fuel, and the furnace is composed of four temperature sections of a low-temperature preheating stripping section, a sulfur-burning and coke-burning section, a diffusion control section and a temperature reduction section; the method is characterized in that: the muffle tunnel regeneration furnace is provided with at least 3 pipe brackets; the pipe bracket comprises an inner protection pipe 2 wrapped outside the muffle tunnel regeneration furnace 1, a support pipe 7 is welded at the bottom of the inner protection pipe 2, and the lower end of the support pipe 7 is inserted into an outer sleeve 8 arranged in the foundation structure 10 to enable the outer wall of the lower end of the support pipe 7 to be attached to the inner wall of the outer sleeve 8; a first heat-insulating layer 3, a hard heat-insulating layer 4 and a second heat-insulating layer 5 are sequentially arranged on the outer side of the inner protection pipe 2 from inside to outside to form a composite heat-insulating layer, and a metal outer protection layer 6 is arranged on the outer side of the composite heat-insulating layer; slotted holes 12 are uniformly distributed on the side wall of the supporting tube 7, and soft heat-insulating materials such as aluminum silicate heat-insulating cotton and glass cotton are filled in the supporting tube 7, so that the strength of the supporting tube can be ensured, a heat transfer path is cut off, the heat transfer area is reduced, and the heat loss can be effectively reduced.
The heat insulation material of the first heat insulation layer 3 is aluminum silicate heat insulation cotton, and the long-term heat resistance of the aluminum silicate heat insulation cotton is not lower than 900 ℃.
The hard heat insulation layer 4 is formed by radially wrapping calcium silicate heat insulation tiles, and is in a tube shell shape. Preferably, every 3 sheets of calcium silicate insulation tiles are radially wrapped to form a circumference. The calcium silicate heat insulation tile is a microporous calcium silicate heat insulation material, the long-term temperature resistance of the calcium silicate heat insulation tile is not lower than 650 ℃, and the compressive strength is not less than 0.7 MPa.
The heat insulation material of the second heat insulation layer 5 is a nano aerogel felt, the nano aerogel felt takes nano silicon dioxide aerogel as a main material, the nano aerogel felt is a flexible heat insulation felt formed by compounding the nano aerogel felt with glass fiber cotton or a pre-oxidized fiber felt through a special process, and the maximum service temperature is 1000 ℃.
The metal outer protective layer 6 is a spiral air pipe; the spiral air duct is a thin-wall spiral air duct formed by mechanically meshing metal sheets, and the metal sheets are galvanized iron sheets, thin aluminum plates or stainless steel plates.
The thickness of the first heat preservation layer 3 is 10-30 mm, the thickness of the hard heat preservation layer 4 is 50-100 mm, the thickness of the second heat preservation layer 5 is 8-10 mm, and the thickness of the metal outer protection layer 6 is 0.8-1.0 mm.
The first heat-insulating layer 3, the hard heat-insulating layer 4 and the second heat-insulating layer 5 are respectively fastened by galvanized steel strips.
The supporting tube 7 and the outer sleeve 8 are both round tubes.
The upper end of the supporting tube 7 is welded in the middle of the bottom of the inner protecting tube 2; the upper part of the supporting tube 7 is wrapped in the composite heat-insulating layer.
The opening rate of the side wall of the supporting tube 7 is 30-35%.
Two adjacent rows of slotted holes 12 on the supporting tube 7 are arranged in a staggered way.
The length of the outer sleeve 8 is 100-200 mm; the inner diameter of the outer jacket tube 8 is matched to the outer diameter of the support tube 7.
At least 4 rib plates 9 are uniformly arranged on the outer wall of the outer sleeve 8 along the radial direction, and the thickness of the rib plates 9 is not less than 10 mm.
The lower end of the outer sleeve 8 is poured in the foundation structure 10; and a heat insulation pouring material is filled in the lower part of the outer sleeve 8 to form a heat insulation layer 12, and the upper edge of the outer sleeve 8 is 60-80 mm higher than the upper end surface of the heat insulation layer 12.
The foundation structure 10 is a pier cast with concrete.
The utility model has the advantages as follows:
the utility model discloses a conventional ear seat of conduit saddle replacement is fixed and is separated flame tunnel regenerator, and is fixed effectual, and the wholeness is good.
The utility model discloses set up the aluminium silicate cotton between flame proof tunnel regenerator and stereoplasm calcium silicate tile, filled the space between the two, can form the strong compound incubation structure of overall stability between each heat preservation structure of conduit saddle to effectively protect inside insulation material not receive external force through the metal outer jacket and destroy, the leakproofness is strong. The utility model discloses a stay tube cooperation outer tube forms bearing structure, and stay tube lateral wall fluting just fills soft insulation material and pouring stereoplasm castables insulating layer inside bearing structure, the effectual heat loss that reduces the conduit saddle has improved the thermal insulation performance of muffle tunnel regenerator, has reduced the natural gas consumption.
Drawings
FIG. 1 is a schematic structural diagram of a hydrogenation catalyst ex-situ regeneration kiln with a pipe support;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the inner sheath;
fig. 4 is a schematic structural view of the support tube.
In the figure: 1-a muffle tunnel regenerative furnace and 2-an inner protection pipe; 3-a first heat-insulating layer, 4-a hard heat-insulating layer, 5-a second heat-insulating layer, 6-an outer protective layer, 7-a support tube, 8-an outer sleeve, 9-a rib plate, 10-a base structure, 11-a heat-insulating layer, 12-a slotted hole, 13-an upper pipe clamp, 14-a lower pipe clamp and 15-a bolt fastener.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-4, the external regeneration kiln of the hydrogenation catalyst device is a mesh belt moving bed type flame-proof tunnel regeneration furnace using natural gas as fuel, and the furnace is composed of four temperature zones of a low-temperature preheating stripping section, a sulfur-burning coking section, a diffusion control section and a cooling section; the method is characterized in that: the muffle tunnel regeneration furnace 1 is provided with at least 3 pipe brackets; the pipe bracket comprises an inner protection pipe 2 wrapped outside the muffle tunnel regeneration furnace 1, a support pipe 7 is welded in the middle of the bottom of the inner protection pipe 2, and the lower end of the support pipe 7 is inserted into an outer sleeve 8 arranged in the foundation structure 10 to enable the outer wall of the lower end of the support pipe 7 to be attached to the inner wall of the outer sleeve 8; a first heat-insulating layer 3, a hard heat-insulating layer 4 and a second heat-insulating layer 5 are sequentially arranged on the outer side of the inner protecting pipe 2 from inside to outside to form a composite heat-insulating layer, and the upper part of a supporting pipe 7 is wrapped in the composite heat-insulating layer; a metal outer protective layer 6 is arranged on the outer side of the composite heat-insulating layer; the slotted holes 12 are uniformly distributed on the side wall of the supporting tube 7, two adjacent rows of slotted holes 12 are arranged in a staggered manner, the aperture ratio of the side wall of the supporting tube is about 35%, and soft heat-insulating materials such as aluminum silicate heat-insulating cotton and glass wool are filled in the supporting tube 7; the lower end of the outer sleeve 8 is poured in the foundation structure 10; a heat insulation pouring material is filled at the lower part of the outer sleeve 8 to form a heat insulation layer 12, and the upper edge of the outer sleeve 8 is 60mm higher than the upper end surface of the heat insulation layer 12; along the radial direction, 4 ribbed slabs 9 are uniformly arranged on the outer wall of the outer sleeve 8.
The heat insulation material of the first heat insulation layer 3 is aluminum silicate heat insulation cotton, and the long-term heat resistance of the aluminum silicate heat insulation cotton is not lower than 900 ℃.
The hard heat insulation layer 4 is in a pipe shell shape and is formed by radially wrapping 3 calcium silicate heat insulation tiles, and each 3 calcium silicate heat insulation tiles are radially wrapped to form a circumference. The calcium silicate heat insulation tile is a microporous calcium silicate heat insulation material, the long-term temperature resistance of the calcium silicate heat insulation tile is not lower than 650 ℃, and the compressive strength is not less than 0.7 MPa.
The heat insulation material of the second heat insulation layer 5 is a nano aerogel felt, the nano aerogel felt takes nano silicon dioxide aerogel as a main material, the nano aerogel felt is a flexible heat insulation felt formed by compounding the nano aerogel felt with glass fiber cotton or a pre-oxidized fiber felt through a special process, and the maximum service temperature is 1000 ℃.
The metal outer protective layer 6 is a spiral air pipe; the spiral air pipe is a thin-wall spiral air pipe formed by mechanically occluding galvanized iron sheets.
The first heat-insulating layer 3, the hard heat-insulating layer 4 and the second heat-insulating layer 5 are respectively fastened by galvanized steel strips.
The thickness of the first heat-insulating layer 3 is 30mm, the thickness of the hard heat-insulating layer 4 is 80mm, the thickness of the second heat-insulating layer 5 is 10mm, and the thickness of the metal outer protective layer 6 is 0.8 mm.
The supporting tube 7 and the outer sleeve 8 are both round tubes.
The length of the outer sleeve 8 is 120 mm; the inner diameter of the outer jacket tube 8 is matched to the outer diameter of the support tube 7.
The thickness of the rib plate 9 is 10 mm.
The foundation structure 10 is a pier cast with concrete.
In the embodiment, the hydrogenation catalyst out-of-reactor regeneration kiln adopts the tube support to replace a conventional lug seat fixed flame-proof tunnel regeneration kiln, so that the fixing effect is good and the integrity is good; meanwhile, the heat bridge phenomenon formed by the lug seat is eliminated, the heat loss of the pipe bracket is effectively reduced, the heat insulation performance of the muffle tunnel regenerative furnace is improved, and the natural gas consumption is reduced.
Claims (10)
1. A hydrogenation catalyst out-of-reactor regeneration kiln is a mesh belt moving bed type flame-proof tunnel regeneration furnace taking natural gas as fuel, and the furnace is composed of four temperature sections of a low-temperature preheating stripping section, a sulfur-burning and coke-burning section, a diffusion control section and a temperature reduction section; the method is characterized in that: the muffle tunnel regeneration furnace is provided with at least 3 pipe brackets; the pipe bracket comprises an inner protection pipe wrapped on the outer side of the flame-proof tunnel regeneration furnace, a support pipe is welded at the bottom of the inner protection pipe, and the lower end of the support pipe is inserted into an outer sleeve arranged in the foundation structure to enable the outer wall of the lower end of the support pipe to be attached to the inner wall of the outer sleeve; a first heat-insulating layer, a hard heat-insulating layer and a second heat-insulating layer are sequentially arranged on the outer side of the inner protecting pipe from inside to outside to form a composite heat-insulating layer, and a metal outer protecting layer is arranged on the outer side of the composite heat-insulating layer; slotted holes are uniformly distributed on the side wall of the supporting tube, and soft heat-insulating materials are filled in the supporting tube.
2. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the inner casing including be semicircle upper tube clamp, lower tube clamp and the bolt fastener, the upper tube clamp outside bending type become and go up the connection otic placode, the lower tube clamp outside bending type become down the connection otic placode, upper and lower otic placode passes through bolt fastener group and forms fastening connection and press from both sides the tight of inside muffle tunnel regenerator.
3. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the heat insulation material of the first heat insulation layer is aluminum silicate heat insulation cotton.
4. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the hard heat insulation layer is formed by radially wrapping calcium silicate heat insulation tiles and is in a pipe shell shape.
5. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the heat insulation material of the second heat insulation layer is a nano aerogel felt.
6. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the metal outer protective layer is a spiral air pipe.
7. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the upper end of the supporting pipe is welded in the middle of the bottom of the inner protecting pipe; the upper part of the supporting tube is wrapped in the composite heat-insulating layer.
8. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the opening rate of the side wall of the supporting tube is 30-35%.
9. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: two adjacent rows of slotted holes on the supporting tube are arranged in a staggered manner.
10. The hydrogenation catalyst ex-situ regeneration kiln as recited in claim 1, wherein: the lower end of the outer sleeve is poured in the foundation structure; and a heat insulation pouring material is filled in the lower part of the outer sleeve to form a heat insulation layer, and the upper edge of the outer sleeve is 60-80 mm higher than the upper end surface of the heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023255095.1U CN214426410U (en) | 2020-12-29 | 2020-12-29 | Hydrogenation catalyst external regeneration kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023255095.1U CN214426410U (en) | 2020-12-29 | 2020-12-29 | Hydrogenation catalyst external regeneration kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214426410U true CN214426410U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023255095.1U Active CN214426410U (en) | 2020-12-29 | 2020-12-29 | Hydrogenation catalyst external regeneration kiln |
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| Country | Link |
|---|---|
| CN (1) | CN214426410U (en) |
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2020
- 2020-12-29 CN CN202023255095.1U patent/CN214426410U/en active Active
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