CN203620552U - Agitation tank for high temperature and high pressure crystallization system of PTA (pure terephthalic acid) refining unit - Google Patents
Agitation tank for high temperature and high pressure crystallization system of PTA (pure terephthalic acid) refining unit Download PDFInfo
- Publication number
- CN203620552U CN203620552U CN201320803808.4U CN201320803808U CN203620552U CN 203620552 U CN203620552 U CN 203620552U CN 201320803808 U CN201320803808 U CN 201320803808U CN 203620552 U CN203620552 U CN 203620552U
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- CN
- China
- Prior art keywords
- ring
- sealing
- pta
- agitation tank
- compensated loop
- 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 - Lifetime
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- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title abstract description 31
- 238000007670 refining Methods 0.000 title abstract description 4
- 238000002425 crystallisation Methods 0.000 title abstract description 3
- 230000008025 crystallization Effects 0.000 title abstract description 3
- 238000013019 agitation Methods 0.000 title abstract 5
- 238000007789 sealing Methods 0.000 claims abstract description 60
- 125000006850 spacer group Chemical group 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 11
- 239000013078 crystal Substances 0.000 claims description 7
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 5
- 239000000835 fiber Substances 0.000 description 3
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RVHSTXJKKZWWDQ-UHFFFAOYSA-N 1,1,1,2-tetrabromoethane Chemical compound BrCC(Br)(Br)Br RVHSTXJKKZWWDQ-UHFFFAOYSA-N 0.000 description 1
- DYNFCHNNOHNJFG-UHFFFAOYSA-N 2-formylbenzoic acid Chemical compound OC(=O)C1=CC=CC=C1C=O DYNFCHNNOHNJFG-UHFFFAOYSA-N 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- VYYLSHUBVSWNIQ-UHFFFAOYSA-L cobalt(2+) manganese(2+) diacetate Chemical compound C(C)(=O)[O-].[Mn+2].C(C)(=O)[O-].[Co+2] VYYLSHUBVSWNIQ-UHFFFAOYSA-L 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides an agitation tank for a high temperature and high pressure crystallization system of a PTA (pure terephthalic acid) refining unit. The agitation tank comprises a tank body (3) and a mechanical sealing device (6) arranged at the top of the tank body (3), wherein the mechanical sealing device (6) comprises oil seals (10), bearings, first sealing rings and second sealing rings, which are connected on a shaft sleeve (8) of an agitating shaft (4) in a sleeving manner from outside to inside in sequence. The agitation tank is technically characterized in that each first sealing ring comprises a first driving ring (12) and a first compensation ring (11) which are matched with each other; each second sealing ring comprises a second driving ring (13) and a second compensation ring (14) which are matched with each other; a spacer (16) is arranged between each first driving ring (12) and each second driving ring (13); the oil seals (10) are respectively arranged between aligning bearings (9) and the outer end face of a shell (7) of the mechanical sealing device (6) as well as between the aligning bearings (9) and the first sealing rings. The agitation tank is ingenious in structural design of the mechanical sealing device, is convenient and fast to assemble, has long service life and reduces the production cost of PTA.
Description
Technical field
The utility model belongs to chemical industry equipment field, is a kind of reaction vessel agitating device specifically, is more specifically a kind of PTA refined unit HTHP crystal system agitator tank, and it is mainly applicable to the refining of PTA.
Background technology
P-phthalic acid (PTA) is one of important large Organic Ingredients, is widely used in the various aspects with national economy such as chemical fibre, light industry, electronics, buildings.Meanwhile, the application of PTA is more concentrated again, and more than 90% PTA is for the production of PETG (being called for short polyester, PET) in the world.In domestic market, there is 75% PTA for the production of polyester fiber; 20% for the production of bottle level polyester, is mainly used in the especially packing of soda of various beverages; 5% for film level polyester, is mainly used in packaging material, film and tape.Visible, the downstream extension product of PTA is mainly polyester fiber.Due to the extensive use of PTA, therefore closely bound up with people's lives.
The preparation method of at present known PTA, take paraxylene as raw material, take acetic acid as solvent, take cobalt acetate-manganese acetate as catalyst, the oxidation take tetrabromoethane as co-catalyst, terephthalic acid (TPA) solubility in acetic acid is not high, and oxidation product is muddy, obtains crude terephthalic acid (CTA) (wherein the most harmful impurity is to carboxyl benzaldehyde) through centrifugation, after dry.Then, CTA is dissolved in the aqueous medium of high temperature, high pressure and carries out hydrofinishing.Finally, by cooling the Purified Water solution step-down after hydrofinishing and make refining crystallization, slurry carried out to Separation of Solid and Liquid and be drying to obtain PTA.
And in the unifining process of above-mentioned CTA, generally use agitator tank, still, the mechanically-sealing apparatus of agitator tank there will be leakage after use a period of time (approximately three months), and affects carrying out smoothly of producing.For carrying out smoothly of guaranteeing to produce, need mechanically-sealing apparatus to carry out periodic inspection, thereby raised the production cost of PTA.For this reason, need improving existing PTA agitator tank badly.
Utility model content
The purpose of this utility model is to provide a kind of durable in use, PTA refined unit HTHP crystal system agitator tank that leak resistance is good.Its structural design is ingenious, has extended the service life of mechanically-sealing apparatus, has reduced the production cost of PTA.
The purpose of this utility model be achieved in that this PTA refined unit HTHP crystal system agitator tank comprise tank body, be arranged on tank base skirt, be arranged on shaft in tank body, be arranged on shaft end paddle, be arranged on the mechanically-sealing apparatus at tank body top; Mechanically-sealing apparatus comprises that ecto-entad is socketed in oil sealing, bearing, the first sealing ring, the second sealing ring on the axle sleeve of shaft successively, its technical essential is: described the first sealing ring comprises the first active ring, the first compensated loop that match, and the second sealing ring comprises the second active ring, the second compensated loop that match; The first compensated loop is arranged on the first seat ring, and the second compensated loop is arranged on the second seat ring, and the first active ring is initiatively provided with spacer ring between ring with second; Bearing is self-aligning bearing, between the housing outer face of self-aligning bearing and mechanically-sealing apparatus, be respectively equipped with oil sealing between self-aligning bearing and the first sealing ring.
Described the first compensated loop, first initiatively ring, the second compensated loop and second initiatively encircles and is made up of silicon rubber.
The advantage the utlity model has and positive technique effect are: first, second compensated loop is respectively by first, second retainer ring spacing, initiatively ring is spacing by first, second compensated loop respectively for first, second, and initiatively between ring, spacer ring is set at first, second, make whole mechanically-sealing apparatus structure compacter, make simple installation quick.Initiatively encircle arranged outside oil enveloping structure first, increased the sealing of mechanically-sealing apparatus, when guaranteeing sealing, reduce friction, extended the service life of whole sealing device.Meanwhile, first, second sealing ring is made up of silicon rubber, and this material has advantages of the aged deterioration of being difficult for long service life.In sum, agitator tank of the present utility model can effectively reduce production costs, and increases economic efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional structure schematic diagram of mechanically-sealing apparatus in Fig. 1.
Sequence number explanation in figure: 1 skirt, 2 paddles, 3 tank bodies, 4 shafts, 5 jockeys, 6 mechanically-sealing apparatus, 7 housings, 8 axle sleeves, 9 self-aligning bearings, 10 oil sealings, 11 first compensated loops, 12 first are initiatively ring, 14 second compensated loops, 15 first seat rings, 16 spacer rings, 17 second seat rings, 18 oil filler points of ring, 13 second initiatively.
The specific embodiment
Describe concrete structure of the present utility model in detail according to Fig. 1～2.This PTA refined unit HTHP crystal system with agitator tank comprise tank body 3, be arranged on tank body 3 bottoms skirt 1, be arranged on shaft 4 in tank body 3, be arranged on shaft 4 ends paddle 2, be arranged on the parts such as the mechanically-sealing apparatus 6 at tank body 3 tops.Wherein, mechanically-sealing apparatus 6 comprises that ecto-entad is socketed in oil sealing, self-aligning bearing 9, the first sealing ring, the second sealing ring on the axle sleeve 8 of shaft 4 successively.The first sealing ring comprise match first initiatively encircle 12, the first compensated loop 11, the second sealing rings comprise match second initiatively encircle 13, the second compensated loop 14.The first compensated loop 11 is arranged on the first seat ring 15, and the second compensated loop 14 is arranged on the second seat ring 17, and first initiatively encircles 12 and second is provided with spacer ring 16 between initiatively encircling 13.Bearing is self-aligning bearing 9, and between housing 7 outer faces of self-aligning bearing 9 and mechanically-sealing apparatus 6, be respectively equipped with oil sealing 10 between self-aligning bearing 9 and the first sealing ring, oil sealing is provided with oil filler point 18.Because mechanically-sealing apparatus 6 can produce amount of heat under in working order, therefore need in this mechanically-sealing apparatus, be provided with buffer solution flushing hole and passage, to take away a large amount of heats, thereby make mechanically-sealing apparatus safer, reliable.
Preferred the first compensated loop 11, first initiatively encircles 12, initiatively to encircle 13 making material be silicon rubber to the second compensated loop 14 and second.
Preferred the first compensated loop 11, first initiatively encircles 12, the second compensated loop 14 and second initiatively encircles 13 section and is " L shaped " structure, and after coordinating, the section of the first sealing ring, the second sealing ring is " C shape " structure, and the opening of " C shape " is towards shaft.
The section of preferred spacer ring is " T shape " structure, and one side of " T shape " structure is just for the first sealing ring and second sealing ring of spacing spacer ring both sides, and therefore structure is compacter, and sealing property is good.
The above; it is only the preferably specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection domain of the present utility model.
Claims (2)
1. a PTA refined unit HTHP crystal system agitator tank, comprise tank body (3), be arranged on tank body (3) bottom skirt (1), be arranged on shaft (4) in tank body (3), be arranged on shaft (4) end paddle (2), be arranged on the mechanically-sealing apparatus (6) at tank body (3) top; Mechanically-sealing apparatus (6) comprises that ecto-entad is socketed in oil sealing (10), bearing, the first sealing ring, the second sealing ring on the axle sleeve of shaft (4) (8) successively, it is characterized in that: described the first sealing ring comprises the first active ring (12), the first compensated loop (11) matching, the second sealing ring comprises the second active ring (13), the second compensated loop (14) matching; It is upper that the first compensated loop (11) is arranged on the first seat ring (15), and it is upper that the second compensated loop (14) is arranged on the second seat ring (17), and first initiatively encircles (12) and second is initiatively provided with spacer ring (16) between ring (13); Bearing is self-aligning bearing (9), between housing (7) outer face of self-aligning bearing (9) and mechanically-sealing apparatus (6), be respectively equipped with oil sealing (10) between self-aligning bearing (9) and the first sealing ring.
2. PTA refined unit HTHP crystal system agitator tank according to claim 1, is characterized in that: described the first compensated loop (11), first initiatively ring (12), the second compensated loop (14) and second initiatively encircles (13) and is made up of silicon rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320803808.4U CN203620552U (en) | 2013-12-02 | 2013-12-05 | Agitation tank for high temperature and high pressure crystallization system of PTA (pure terephthalic acid) refining unit |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320787023 | 2013-12-02 | ||
| CN201320787023.2 | 2013-12-02 | ||
| CN201320803808.4U CN203620552U (en) | 2013-12-02 | 2013-12-05 | Agitation tank for high temperature and high pressure crystallization system of PTA (pure terephthalic acid) refining unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203620552U true CN203620552U (en) | 2014-06-04 |
Family
ID=50807079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320803808.4U Expired - Lifetime CN203620552U (en) | 2013-12-02 | 2013-12-05 | Agitation tank for high temperature and high pressure crystallization system of PTA (pure terephthalic acid) refining unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203620552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667791A (en) * | 2013-12-02 | 2015-06-03 | 逸盛大化石化有限公司 | Stirring tank for high-temperature and high-pressure crystallization system of PTA (pure terephthalic acid) refining unit |
-
2013
- 2013-12-05 CN CN201320803808.4U patent/CN203620552U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667791A (en) * | 2013-12-02 | 2015-06-03 | 逸盛大化石化有限公司 | Stirring tank for high-temperature and high-pressure crystallization system of PTA (pure terephthalic acid) refining unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |