CN116608646A - Novel cryogenic air separation rectifying tower equipment cold insulation device and installation method - Google Patents
Novel cryogenic air separation rectifying tower equipment cold insulation device and installation method Download PDFInfo
- Publication number
- CN116608646A CN116608646A CN202310778860.7A CN202310778860A CN116608646A CN 116608646 A CN116608646 A CN 116608646A CN 202310778860 A CN202310778860 A CN 202310778860A CN 116608646 A CN116608646 A CN 116608646A
- Authority
- CN
- China
- Prior art keywords
- rectifying tower
- cold insulation
- shell
- pipeline
- air separation
- 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.)
- Pending
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000000926 separation method Methods 0.000 title claims description 20
- 238000009434 installation Methods 0.000 title claims description 6
- 239000011229 interlayer Substances 0.000 claims description 20
- 239000010451 perlite Substances 0.000 claims description 10
- 235000019362 perlite Nutrition 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 abstract description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 229910001562 pearlite Inorganic materials 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04945—Details of internal structure; insulation and housing of the cold box
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
A new cold insulation method for deep-cooling air-separating rectifying tower equipment and vacuum heat-insulating rectifying tower are disclosed, which features that the insulating material (heat-insulating quilt) is wrapped in the sandwich between internal equipment and casing, or the insulating method of filling expanded pearlite (and molecular sieve) and vacuumizing is used.
Description
Technical Field
The invention relates to the technical field of cryogenic air separation equipment cold insulation methods, and provides a novel cryogenic air separation rectifying tower equipment cold insulation method and a vacuum heat insulation rectifying tower, which are completely different from the common cold insulation method of the traditional air separation equipment rectifying tower.
Background
The cryogenic air separation equipment is characterized in that after air is liquefied, the air is separated from oxygen, nitrogen, argon, neon, helium, krypton, xenon and other gases contained in the air by utilizing the difference of boiling points of different components contained in the air and using a low-temperature rectification method, when the air separation rectification tower works, the working temperature can be as low as-196 ℃, and the rectification tower equipment must work in a cold-keeping state. The traditional cold insulation method of the air separation equipment is that a rectifying tower, a heat exchanger, connecting pipelines among the equipment and the like are placed in a cold box, the cold box is a box body with a steel structure, then expanded perlite is filled into the cold box, and dry sealing nitrogen is introduced to keep the cold insulation performance of the expanded perlite.
Disclosure of Invention
The invention provides a novel cryogenic air separation rectifying tower equipment cold insulation method and a vacuum heat insulation rectifying tower aiming at the defects of the prior art, and the method and the device comprise the cryogenic rectifying tower, a low-temperature pipeline, a temperature compensation component, a cold insulation shell, heat insulation materials (heat insulation quilt, expanded perlite and molecular sieve), an interlayer vacuumizing and interlayer supporting device, and the invention adopts the following technical scheme:
1. the utility model provides a novel cryogenic air separation rectifying column equipment cold insulation device, it includes rectifying column body, and this body comprises head, barrel, centrum, installs inside structure in barrel and centrum, the outside cover of rectifying column body has the cold insulation shell, and the cold insulation shell comprises upper and lower head and shell body, connects and fixes through intermediate layer bearing structure between this shell body and the rectifying column body, forms certain space between this intermediate layer bearing structure with cold insulation shell and the rectifying column body, has placed adiabatic quilt or filling expanded perlite in this space to extract through the intermediate layer evacuating device of shell body bottom installation.
As preferable: the utility model discloses a rectifying tower, including shell body, rectifying tower body, temperature compensation structure, normal pipeline, shell body, rectifying tower body, temperature compensation structure's pipeline and normal pipeline have still been seted up to be located the rectifying tower body outside between shell body and the rectifying tower body, this pipeline with temperature compensation structure is fixed on the pipe support of rectifying tower body outside, and its one end is connected with the rectifying tower, and the other end is connected or both ends are all connected with shell body with shell or rectifying tower, normal pipeline installs and is located the opposite side of temperature compensation structure on the rectifying tower outer wall.
As preferable: the upper end socket and the lower end socket of the rectification tower and the cold insulation shell are connected in such a way that the rectification tower cylinder directly penetrates out from the two ends of the upper end socket and the lower end socket and is welded in a sealing way.
As preferable: the rectifying tower is connected with the bottom of the cold insulation shell in such a way that the supporting legs at the bottom of the rectifying tower are fixed in the bottom of the lower seal head of the lower part of the cold insulation shell.
As preferable: the top upper seal head of the cold insulation shell is also provided with a safety device, and a platform ladder and a safety guardrail are arranged on the side of the top upper seal head.
The method for installing the novel cryogenic air separation rectifying tower equipment cold insulation device comprises the following steps:
1) Manufacturing a rectifying tower, wherein the rectifying tower is assembled by an end socket, a cylinder body and a cone; and the inner member is arranged in the rectifying tower;
2) Welding a conventional pipeline and a pipeline with a temperature compensation structure outside the rectifying tower to form a finished rectifying tower;
3) Sleeving the rectification column finished in the step 2) inside a cold insulation shell, and supporting the rectification column inside through an interlayer supporting structure, wherein the interlayer supporting structure is of a movable or fixed structure, and the cold insulation shell consists of an upper end socket, a shell body and a lower end socket;
4) The interlayer space in the interlayer support structure is wrapped with vacuum quilt or expanded perlite;
5) Vacuumizing through an interlayer vacuumizing device at the bottom, wherein the vacuum degree is more than 8Pa;
6) Finally, a safety device and a platform ladder and a safety guardrail are respectively arranged at the top and the side surface of the cold-preserving shell.
As preferable: the rectifying tower, the cold insulation shell, the conventional pipeline and the pipeline with the temperature compensation structure and the interlayer supporting structure are all made of low-temperature resistant stainless steel or aluminum alloy materials.
The invention provides a novel cryogenic air separation rectifying tower equipment cold insulation method and a vacuum heat insulation rectifying tower, which integrate equipment, pipelines and cold insulation materials into a compact and independent whole, and vacuumize the whole, thereby realizing the integration of the rectifying tower and a cold insulation shell in a factory, greatly reducing the workload of the site, simultaneously reducing the volume of the cold insulation shell, reducing the consumption of expanded perlite and steel materials and canceling the consumption of sealing nitrogen.
Drawings
FIG. 1 is a schematic view of the structure of the present invention
Fig. 2 is a schematic diagram of another embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings and examples below in order to more clearly understand the objects, technical solutions and advantages of the present invention to those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "transverse," "vertical," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience in describing the present invention, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the invention.
The invention will be described in detail below with reference to the attached drawings: as shown in figure 1, a novel cryogenic air separation rectifying tower device is cold-preserving device, it includes rectifying tower body 1, this body is by head 2, barrel 3, cone 4 are constituteed, install inside structure 5 in barrel 3 and cone 4, the outside cover of rectifying tower body 1 has cold-preserving shell 6, cold-preserving shell 6 comprises upper and lower head and shell body 8, connect and fix through intermediate layer bearing structure 9 between this shell body 8 and rectifying tower body 1, form certain space between this intermediate layer bearing structure 9 and rectifying tower body 1, place adiabatic quilt or filling expanded perlite in this space, and draw through the intermediate layer evacuating device 10 of shell body bottom installation, pipeline 11 and conventional pipeline 12 that have temperature compensating structure are still seted up between shell body 8 and rectifying tower body 1 and are located rectifying tower body outside, pipeline 11 that have temperature compensating structure is fixed on rectifying tower body outside pipe support 13, its one end is connected with rectifying tower, the other end is connected with shell or rectifying tower body connection or both ends are connected with rectifying tower body connection, the both ends are the upper and lower head of rectifying tower body connection mode that the rectifying tower body is the upper and the rectifying tower is the outer wall of rectifying tower body is the top end-sealing structure is, the top end-sealing tower is connected with rectifying tower body is 17.
As shown in fig. 2: the rectifying tower body 1 is connected with the bottom of the cold insulation shell 6 in such a way that the supporting legs 14 at the bottom of the rectifying tower are fixed in the bottom of the lower end enclosure of the cold insulation shell, the upper end enclosure at the top of the cold insulation shell is also provided with a safety device 15, and the side bodies of the safety device are provided with a platform ladder and a safety guardrail 16.
The installation method of the invention comprises the following steps:
1) Manufacturing a rectifying tower, wherein the rectifying tower is assembled by an end socket, a cylinder body and a cone; and the inner member is arranged in the rectifying tower;
2) Welding a conventional pipeline and a pipeline with a temperature compensation structure outside the rectifying tower to form a finished rectifying tower;
3) Sleeving the rectification column finished in the step 2) inside a cold insulation shell, and supporting the rectification column inside through an interlayer supporting structure, wherein the interlayer supporting structure is of a movable or fixed structure, and the cold insulation shell consists of an upper end socket, a shell body and a lower end socket;
4) The interlayer space in the interlayer support structure is wrapped with vacuum quilt or expanded perlite;
5) Vacuumizing through an interlayer vacuumizing device at the bottom, wherein the vacuum degree is more than 8Pa;
6) Finally, a safety device and a platform ladder and a safety guardrail are respectively arranged at the top and the side surface of the cold-preserving shell.
The rectifying tower, the cold insulation shell, the conventional pipeline, the pipeline with the temperature compensation structure and the interlayer supporting structure are all made of low-temperature resistant stainless steel or aluminum alloy materials, and the working temperature can be as low as-196 ℃.
Claims (7)
1. The utility model provides a novel cryogenic air separation rectifying column equipment cold insulation device, it includes rectifying column body, and this body comprises head, barrel, centrum, installs inside structure in barrel and centrum, its characterized in that the outside cover of rectifying column body has the cold insulation shell, and the cold insulation shell comprises upper and lower head and shell body, connects and fixes through intermediate layer bearing structure between this shell body and the rectifying column body, forms certain space between this intermediate layer bearing structure with cold insulation shell and the rectifying column body, has placed adiabatic quilt or filling expanded perlite in this space to extract through the intermediate layer evacuating device of shell body bottom installation.
2. The cold insulation device of the novel cryogenic air separation rectifying tower equipment according to claim 1, wherein a pipeline with a temperature compensation structure and a conventional pipeline are further arranged between the shell body and the rectifying tower body and positioned on the outer side of the rectifying tower body, the pipeline with the temperature compensation structure is fixed on a pipe frame on the outer side of the rectifying tower body, one end of the pipeline with the temperature compensation structure is connected with the rectifying tower, the other end of the pipeline with the temperature compensation structure is connected with the shell or the rectifying tower, or both ends of the pipeline with the temperature compensation structure are connected with the shell body, and the conventional pipeline is arranged on the outer wall of the rectifying tower and positioned on the other side of the temperature compensation structure.
3. The cold insulation device of the novel cryogenic air separation rectifying tower equipment according to claim 2, wherein the upper end socket and the lower end socket of the cold insulation shell are connected in a way that the rectifying tower cylinder directly penetrates out from two ends of the upper end socket and the lower end socket and is welded in a sealing way.
4. The cold insulation device of novel cryogenic air separation rectifying tower equipment according to claim 2, wherein the rectifying tower body and the bottom of the cold insulation shell are connected in such a way that the supporting legs of the bottom of the rectifying tower are fixed in the bottom of the lower seal head of the lower part of the cold insulation shell.
5. The cold insulation device of the novel cryogenic air separation rectifying tower equipment according to claim 2, wherein the top upper end enclosure of the cold insulation shell is further provided with a safety device, and a platform ladder and a safety guardrail are arranged on the side edge of the top upper end enclosure.
6. Method for installing a cold insulation device of a new cryogenic air separation rectification column plant according to claims 1-5, characterized in that it comprises the steps of:
1) Manufacturing a rectifying tower, wherein the rectifying tower is assembled by an end socket, a cylinder body and a cone; and the inner member is arranged in the rectifying tower;
2) Welding a conventional pipeline and a pipeline with a temperature compensation structure outside the rectifying tower to form a finished rectifying tower;
3) Sleeving the rectification column finished in the step 2) inside a cold insulation shell, and supporting the rectification column inside through an interlayer supporting structure, wherein the interlayer supporting structure is of a movable or fixed structure, and the cold insulation shell consists of an upper end socket, a shell body and a lower end socket;
4) The interlayer space in the interlayer support structure is wrapped with vacuum quilt or expanded perlite;
5) Vacuumizing through an interlayer vacuumizing device at the bottom, wherein the vacuum degree is more than 8Pa;
6) Finally, a safety device and a platform ladder and a safety guardrail are respectively arranged at the top and the side surface of the cold-preserving shell.
7. The method for installing a cold insulation device of a novel cryogenic air separation rectifying tower device according to claim 6, wherein the rectifying tower, the cold insulation shell, the conventional pipeline, the pipeline with a temperature compensation structure and the interlayer supporting structure are all made of low-temperature resistant stainless steel or aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310778860.7A CN116608646A (en) | 2023-06-29 | 2023-06-29 | Novel cryogenic air separation rectifying tower equipment cold insulation device and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310778860.7A CN116608646A (en) | 2023-06-29 | 2023-06-29 | Novel cryogenic air separation rectifying tower equipment cold insulation device and installation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116608646A true CN116608646A (en) | 2023-08-18 |
Family
ID=87680195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310778860.7A Pending CN116608646A (en) | 2023-06-29 | 2023-06-29 | Novel cryogenic air separation rectifying tower equipment cold insulation device and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116608646A (en) |
-
2023
- 2023-06-29 CN CN202310778860.7A patent/CN116608646A/en active Pending
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