CN115253605A - MMA esterification blow-down pipeline mechanism - Google Patents
MMA esterification blow-down pipeline mechanism Download PDFInfo
- Publication number
- CN115253605A CN115253605A CN202210975323.7A CN202210975323A CN115253605A CN 115253605 A CN115253605 A CN 115253605A CN 202210975323 A CN202210975323 A CN 202210975323A CN 115253605 A CN115253605 A CN 115253605A
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- Prior art keywords
- pipeline
- mma
- rod
- esterification
- threaded rod
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- 230000032050 esterification Effects 0.000 title claims abstract description 21
- 238000005886 esterification reaction Methods 0.000 title claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Supports For Pipes And Cables (AREA)
Abstract
The invention relates to the technical field of storage tank emptying production, in particular to an MMA esterification emptying pipeline mechanism, which comprises a tank body, an absorption tower and an emptying pipeline; the tank body is communicated with the absorption tower, and the emptying pipeline comprises a horizontal pipeline, an inclined pipeline and a vertical diversion pipeline; the horizontal pipeline is connected with the absorption tower, the vertical diversion pipeline is connected with the tank body, and the horizontal pipeline, the inclined pipeline and the vertical diversion pipeline are connected through a tee joint; the flow guide pipeline is clamped and fixed through an auxiliary mechanism. The inclined pipeline with the inclined upward can reduce straight pipe sections on the pipeline, condensed MMA smoothly flows downwards, the problem that the pipeline is easy to block is solved, and meanwhile, the flow guide pipeline is fixed in an auxiliary mode through the auxiliary mechanism, so that the stability of the flow guide pipeline is enhanced.
Description
Technical Field
The invention relates to the technical field of storage tank emptying production, in particular to an MMA esterification emptying pipeline mechanism.
Background
The existing vent pipeline has more straight pipes, condensed Methyl Methacrylate (MMA) is often polymerized in the pipeline to block the pipeline, the vent pipeline is blocked, the material on the tube pass of the E2106 heat exchanger cannot flow, a polymer is also formed to block the tube, the pipeline is disassembled by pipeline blocking equipment personnel at each time, the E2106 upper and lower end sockets are disassembled by workshop site personnel, an electric drill and a wrench are required at each time, and the gasket of the equipment is replaced again. During production, head disassembly and inspection firstly cause fluctuation to production index control, but esterification gas can be released to the atmosphere to pollute the environment. After the pipeline is blocked, MMA and methanol liquid are stored in the original pipeline during disassembly, and a non-explosion-proof tool cannot be used, so that unsafe factors are formed, and potential safety hazards exist.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an MMA esterification blow-down pipeline mechanism which is designed to ensure that a blow-down pipeline is smooth, production equipment is not subjected to pressure build-up, and air pollution and potential safety hazards are reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an MMA esterification blow-down pipeline mechanism comprises a tank body, an absorption tower and a blow-down pipeline; the tank body is communicated with the absorption tower, and the emptying pipeline comprises a horizontal pipeline, an inclined pipeline and a vertical diversion pipeline; the horizontal pipeline is connected with the absorption tower, the vertical diversion pipeline is connected with the tank body, and the horizontal pipeline, the inclined pipeline and the vertical diversion pipeline are connected through a tee joint; the flow guide pipeline is clamped and fixed through an auxiliary mechanism. The inclined pipeline with the upward slant can reduce straight pipe sections on the pipeline, condensed MMA flows downwards smoothly, the pipeline is not easy to block, and meanwhile, the flow guide pipeline is fixed in an auxiliary mode through the auxiliary mechanism, so that the stability of the pipeline is enhanced.
Further, the auxiliary mechanism comprises a base, a supporting mechanism and an outer sleeve, wherein the supporting mechanism and the outer sleeve are vertically arranged on the base; the outer sleeve is arranged on one side of the upper end of the supporting mechanism, a rotating piece with an I-shaped longitudinal section is sleeved in the outer sleeve, the rotating piece can rotate relative to the outer sleeve, the rotating piece is hollow and provided with internal threads, the internal threads of the rotating piece are connected with a threaded rod, the threaded rod is hollow and provided with a plurality of pressing rods inclining towards the central axis of the threaded rod at the edge of the upper end, and the pressing rods are used for clamping a flow guide pipeline; the supporting mechanism upper end is provided with the locating plate, set up the through-hole on the locating plate, through-hole and threaded rod coaxial setting, the internal diameter of through-hole is greater than the external diameter of water conservancy diversion pipeline and is less than the external diameter of threaded rod, the water conservancy diversion pipeline passes through-hole, threaded rod inside in proper order. During operation, the rotating member makes the threaded rod rebound at outer sleeve internal rotation, makes the compressing rod stretch into the through-hole, and under the effect of through-hole, the compressing rod further inclines to the threaded rod center pin to make the compressing rod press from both sides tight water conservancy diversion pipeline, increase water conservancy diversion pipeline's stability.
Furthermore, a plurality of vertical clamping grooves are uniformly distributed on the periphery of the end part of the rotating part, and the upper parts of the vertical clamping grooves are opened and the lower parts of the vertical clamping grooves are closed; and one side of the supporting mechanism is hinged with a clamping strip, and the clamping strip is positioned on one side of the clamping groove and is used for being buckled in the clamping groove. During the use, after threaded rod position control is good, for further fixed rotating member, the rotatory card strip of accessible will block the strip and put into the draw-in groove, prevent that the rotating member from rotating.
Furthermore, the supporting mechanism is a fixing rod, an electric telescopic rod, an oil cylinder or an air cylinder and the like.
Further, when the supporting mechanism is an electric telescopic rod, an oil cylinder or an air cylinder, an extension rod is arranged at the upper end of the supporting mechanism, the positioning plate and the sleeve are both installed on the extension rod, the telescopic action of the electric telescopic rod, the oil cylinder or the air cylinder is prevented from being influenced, and the clamping of different positions of the flow guide pipeline is flexibly selected.
Furthermore, the inner side surface of the end part of the pressing rod is provided with an anti-skidding gasket, or the inner side surface of the end part of the pressing rod is horizontally provided with a rack, so that the anti-skidding function is achieved when the guide pipeline is clamped.
The invention has the technical effects that:
compared with the prior art, the emptying pipeline mechanism for the MMA esterification has the advantages that the emptying pipeline is changed into the obliquely upward pipeline, so that straight pipe sections on the pipeline are reduced, the condensed MMA flows downwards smoothly, and the blockage of the emptying pipeline is reduced; the auxiliary mechanism is used for auxiliary clamping and fixing of the pipeline, and the auxiliary mechanism can be suitable for clamping of guide pipelines with various pipe diameters.
Drawings
FIG. 1 is a schematic structural view of an MMA esterification blow-down line mechanism of example 1 of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is a schematic structural diagram of a positioning plate according to embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a rotary member according to embodiment 1 of the present invention;
FIG. 5 is a top view of a rotary member according to embodiment 1 of the present invention;
FIG. 6 is a schematic structural diagram of an MMA esterification blow line mechanism in example 2 of the present invention.
In the figure, 1, a tank body; 2. an absorption tower; 3. an emptying pipeline; 4. a fixing rod; 5. a base; 6. a telescopic rod; 7. an outer sleeve; 8. a fixed seat; 9. a rotating member; 10. a threaded rod; 11. a hold down bar; 12. positioning a plate; 13. a through hole; 14. clamping the strip; 15. an extension pole; 31. a horizontal pipeline; 32. tilting the pipeline; 33. a diversion pipeline; 34. a tee joint; 91. an upper projection; 92. an inner sleeve; 93. a lower protrusion; 94. a vertical slot; 331. feeding a pipeline; 332. and (5) discharging the pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings of the specification.
Example 1:
as shown in FIG. 1, the MMA esterification vent line mechanism according to this embodiment comprises a tank 1, an absorption column 2 and a vent line 3; the tank body 1 is communicated with the absorption tower 2, the emptying pipeline 3 comprises a horizontal pipeline 31, a vertical flow guide pipeline 33 and an inclined pipeline 32 which inclines upwards, the inclined pipeline 32 can reduce straight pipe sections on the pipeline, condensed MMA smoothly flows downwards, and the pipeline is not easy to block; the horizontal pipeline 31 is connected with the absorption tower 2, the vertical flow guide pipeline 33 is connected with the tank body 1, and the horizontal pipeline 31, the inclined pipeline 32 and the vertical flow guide pipeline 33 are connected through a tee 34; the guide line 33 is clamped and fixed by an auxiliary mechanism.
As shown in fig. 1 and 2, the auxiliary mechanism includes a base 5, a supporting mechanism, an outer sleeve 7, a fixed seat 8, a rotating member 9, a threaded rod 10, a pressing rod 11, a positioning plate 12, a through hole 13 and a clamping strip 14; in the embodiment, the supporting mechanism is a fixed rod 4 and is vertically arranged on a base 5; the outer sleeve 7 is installed on one side of the upper end of the fixing rod 4 through a fixing seat 8, and a rotating part 9 is sleeved in the outer sleeve 7.
As shown in fig. 2, 4 and 5, in order to facilitate the installation of the rotating member 9 in the outer sleeve 7, the rotating member 9 in this embodiment has an i-shaped longitudinal section, and includes an upper protrusion 91, an inner sleeve 92, and a lower protrusion 93, the upper protrusion 91 is integrally connected or welded with the middle sleeve 92, and the lower protrusion 93 is detachably connected, such as a snap-fit connection or a threaded connection, with the middle sleeve 92; the intermediate sleeve 92 is hollow and provided with an internal thread.
As shown in fig. 2, the threaded rod 10 extends through the inside of the rotary member 9 and is screwed with the rotary member 9; the threaded rod 10 is hollow inside, the upper end edge of the threaded rod is provided with a plurality of pressing rods 11 which incline to the central axis of the threaded rod 10, and the pressing rods 11 are uniformly distributed on the periphery of the flow guide pipeline 33 and used for clamping the flow guide pipeline 33.
In order to further fix the rotating member 9, a plurality of vertical slots 94 are uniformly distributed on the periphery of the lower protrusion 93, or as shown in fig. 2, 4 and 5, a plurality of vertical slots 94 are uniformly distributed on the periphery of the upper protrusion 91; one side of the fixed rod 4 is hinged with a clamping strip 14, and the clamping strip 14 is positioned at one side of the clamping groove 94 and is used for being clamped in the clamping groove 94; in order to place the clamping strip 14, the vertical clamping groove 94 is of an upper opening and lower closing structure, and after the threaded rod 10 is adjusted in position, the clamping strip 14 is placed into the clamping groove 94 by rotating the clamping strip 14, so that the rotating piece 9 is prevented from rotating.
As shown in fig. 2 and 3, a positioning plate 12 is disposed at the upper end of the fixing rod 4, a through hole 13 is disposed on the positioning plate 12, the through hole 13 is disposed coaxially with the threaded rod 10, the inner diameter of the through hole 13 is larger than the outer diameter of the flow guide pipeline 33 and smaller than the outer diameter of the threaded rod 10, and the flow guide pipeline 33 sequentially passes through the through hole 13 and the inside of the threaded rod 10. During operation, the rotating part 10 rotates in the outer sleeve 7, the threaded rod 10 moves upwards, the pressing rod 11 extends into the through hole 13, and the pressing rod 11 further inclines towards the central axis of the threaded rod 10 under the action of the through hole 13, so that the pressing rod 11 clamps the flow guide pipeline 33, and the stability of the flow guide pipeline 33 is improved.
The working principle is as follows: according to the invention, the emptying pipeline 3 is changed into an upward inclined pipeline, so that straight pipe sections on the pipeline are reduced, condensed MMA flows downwards smoothly, the blockage of the emptying pipeline 3 is reduced, the labor force of personnel is reduced, the environmental pollution is reduced, potential safety hazards in a workshop are solved, methanol and MMA are recovered efficiently, the raw material cost is reduced, and the production unit consumption is reduced.
In addition, the vertically arranged diversion pipeline 33 is fixed in an auxiliary mode through the auxiliary mechanism, during installation, the diversion pipeline 33 penetrates through the through hole 13 of the positioning plate 12 and the interior of the threaded rod 10 from top to bottom, and the diversion pipeline 33 is clamped under the cooperative fit of the following structures: the inner diameter of the through hole 13 is larger than the outer diameter of the flow guide pipeline 33 and smaller than the outer diameter of the threaded rod 10, the threaded rod 10 is hollow, and a plurality of pressing rods 11 inclined towards the central axis of the threaded rod 10 are arranged at the edge of the upper end of the threaded rod 10. Namely, the above structure prevents the threaded rod 10 from entering the through hole 13; on the other hand, the pressing rod 11 can be further inclined towards the central shaft of the threaded rod 10 under the action of the through hole 13, so that the clamping function of the flow guide pipeline 33 is realized; further, the guide line 33 having various diameters can be held.
Example 2:
the main structure of an MMA esterification vent line mechanism related to this embodiment is substantially the same as that in embodiment 1, except that:
as shown in fig. 6, the supporting mechanism is an electric telescopic rod 6, at this time, an extension rod 15 is arranged at the upper end of the electric telescopic rod 6, the positioning plate 12 and the sleeve 7 are both installed on the extension rod 15, the telescopic action of the electric telescopic rod 6 is prevented from being influenced, and the clamping of different positions of the flow guide pipeline 33 is flexibly selected.
The diversion pipeline 33 comprises an upper pipeline 331 and a lower pipeline 332, and when the device is used, the positions of the sleeve 7 and the positioning plate 12 are adjusted up and down through the electric telescopic rod 6, so that the upper pipeline 331 or the lower pipeline 332 can be clamped selectively. When the lower pipeline 332 needs to be replaced, the upper pipeline 331 is clamped by the pressing rod 11, and the lower pipeline 332 is replaced. Divide into upper and lower two parts with water conservancy diversion pipeline 33, the pipeline of being convenient for is overhauld and is changed, when overhauing or changing simultaneously, carries out supplementary fixed, safe and reliable through complementary unit.
The above embodiments are only specific examples of the present invention, and the scope of the present invention includes but is not limited to the above embodiments, and any suitable changes or modifications by those of ordinary skill in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.
Claims (10)
1. The utility model provides a MMA is esterified blow-down pipe line mechanism which characterized in that: comprises a tank body, an absorption tower and an emptying pipeline; the tank body is communicated with the absorption tower, and the emptying pipeline comprises a horizontal pipeline, an inclined pipeline and a vertical diversion pipeline; the horizontal pipeline is connected with the absorption tower, the vertical diversion pipeline is connected with the tank body, and the horizontal pipeline, the inclined pipeline and the vertical diversion pipeline are connected through a tee joint; the flow guide pipeline is clamped and fixed through an auxiliary mechanism.
2. The MMA esterification vent line mechanism of claim 1, wherein: the auxiliary mechanism comprises a base, a supporting mechanism and an outer sleeve, wherein the supporting mechanism and the outer sleeve are vertically arranged on the base; the outer sleeve is arranged on one side of the upper end of the supporting mechanism, a rotating piece with an I-shaped longitudinal section is sleeved in the outer sleeve, the rotating piece can rotate relative to the outer sleeve, the rotating piece is hollow and provided with internal threads, the internal threads of the rotating piece are connected with a threaded rod, the threaded rod is hollow and provided with a plurality of pressing rods inclining towards the central axis of the threaded rod at the edge of the upper end, and the pressing rods are used for clamping a flow guide pipeline; the supporting mechanism is characterized in that a positioning plate is arranged at the upper end of the supporting mechanism, a through hole is formed in the positioning plate and is coaxial with the threaded rod, the inner diameter of the through hole is larger than the outer diameter of the flow guide pipeline and smaller than the outer diameter of the threaded rod, and the flow guide pipeline sequentially penetrates through the through hole and the inside of the threaded rod.
3. An MMA esterification vent line mechanism according to claim 2, further comprising: a plurality of vertical clamping grooves are uniformly distributed on the periphery of the end part of the rotating part, and the upper parts of the vertical clamping grooves are open and the lower parts of the vertical clamping grooves are closed; and one side of the supporting mechanism is hinged with a clamping strip, and the clamping strip is positioned on one side of the clamping groove and used for being buckled in the clamping groove.
4. An MMA esterification vent line mechanism according to claim 3, wherein: the rotating piece comprises an upper protrusion, an inner sleeve and a lower protrusion, the upper protrusion is integrally connected or welded with the middle sleeve, and the lower protrusion is detachably connected with the middle sleeve.
5. An MMA esterification vent line mechanism according to claim 4, wherein: the upper part bulge or the lower part bulge is provided with a clamping groove.
6. An MMA esterification vent line mechanism according to claim 2, 3 or 4, characterized by: the supporting mechanism is a fixed rod, an electric telescopic rod, an oil cylinder or an air cylinder.
7. An MMA esterification vent line mechanism according to claim 5, characterized by: when the supporting mechanism is an electric telescopic rod, an oil cylinder or an air cylinder, an extension rod is arranged at the upper end of the supporting mechanism, and the positioning plate and the sleeve are both installed on the extension rod.
8. The MMA esterification vent line mechanism according to claim 6, wherein: the diversion pipeline comprises an upper pipeline and a lower pipeline.
9. An MMA esterification vent line mechanism according to claim 2, characterized by: the outer sleeve is installed on one side of the upper end of the fixing rod through the fixing seat.
10. The MMA esterification vent line mechanism of claim 2, or 3, or 4, or 6, or 7, or 8, wherein: and an anti-skid gasket is arranged on the inner side surface of the end part of the pressing rod, or a rack is horizontally arranged on the inner side surface of the end part of the pressing rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210975323.7A CN115253605B (en) | 2022-08-15 | 2022-08-15 | MMA esterification emptying pipeline mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210975323.7A CN115253605B (en) | 2022-08-15 | 2022-08-15 | MMA esterification emptying pipeline mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115253605A true CN115253605A (en) | 2022-11-01 |
| CN115253605B CN115253605B (en) | 2024-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210975323.7A Active CN115253605B (en) | 2022-08-15 | 2022-08-15 | MMA esterification emptying pipeline mechanism |
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| CN (1) | CN115253605B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367119B1 (en) * | 1999-09-22 | 2002-04-09 | Wuu-Cheau Jou | Dual-duty blowing and exhausting apparatus |
| CN201618472U (en) * | 2010-02-10 | 2010-11-03 | 中国石油天然气股份有限公司 | Gas well wellhead gas-liquid separation device |
| CN202136975U (en) * | 2011-06-21 | 2012-02-08 | 泰州新安阻燃材料有限公司 | Safety explosion-proof backflow device |
| CN205435697U (en) * | 2016-01-28 | 2016-08-10 | 江苏盛吉化工有限公司 | Reation kettle condensing reflux device |
| CN106830379A (en) * | 2017-03-21 | 2017-06-13 | 中铁八局集团市政工程有限公司 | Municipal sewage plant aids in blow-down pipe construction method |
| CN206320453U (en) * | 2016-11-30 | 2017-07-11 | 煤炭工业郑州设计研究院股份有限公司 | A kind of fluid line buffer unit |
| CN216896373U (en) * | 2022-02-14 | 2022-07-05 | 山东宏旭化学股份有限公司 | MMA esterification emptying pipeline with anti-blocking function |
-
2022
- 2022-08-15 CN CN202210975323.7A patent/CN115253605B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6367119B1 (en) * | 1999-09-22 | 2002-04-09 | Wuu-Cheau Jou | Dual-duty blowing and exhausting apparatus |
| CN201618472U (en) * | 2010-02-10 | 2010-11-03 | 中国石油天然气股份有限公司 | Gas well wellhead gas-liquid separation device |
| CN202136975U (en) * | 2011-06-21 | 2012-02-08 | 泰州新安阻燃材料有限公司 | Safety explosion-proof backflow device |
| CN205435697U (en) * | 2016-01-28 | 2016-08-10 | 江苏盛吉化工有限公司 | Reation kettle condensing reflux device |
| CN206320453U (en) * | 2016-11-30 | 2017-07-11 | 煤炭工业郑州设计研究院股份有限公司 | A kind of fluid line buffer unit |
| CN106830379A (en) * | 2017-03-21 | 2017-06-13 | 中铁八局集团市政工程有限公司 | Municipal sewage plant aids in blow-down pipe construction method |
| CN216896373U (en) * | 2022-02-14 | 2022-07-05 | 山东宏旭化学股份有限公司 | MMA esterification emptying pipeline with anti-blocking function |
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| CN115253605B (en) | 2024-01-12 |
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