CN115253605B - MMA esterification emptying pipeline mechanism - Google Patents
MMA esterification emptying pipeline mechanism Download PDFInfo
- Publication number
- CN115253605B CN115253605B CN202210975323.7A CN202210975323A CN115253605B CN 115253605 B CN115253605 B CN 115253605B CN 202210975323 A CN202210975323 A CN 202210975323A CN 115253605 B CN115253605 B CN 115253605B
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- Prior art keywords
- pipeline
- rod
- vertical
- mma
- threaded rod
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- 230000032050 esterification Effects 0.000 title claims abstract description 20
- 238000005886 esterification reaction Methods 0.000 title claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 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 17
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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
Landscapes
- 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 diversion pipeline is clamped and fixed through an auxiliary mechanism. According to the invention, the inclined pipeline can reduce the straight pipe section on the pipeline, condensed MMA flows smoothly downwards, the problem that the pipeline is easy to block is solved, and meanwhile, the diversion pipeline is fixed in an auxiliary way through the auxiliary mechanism, so that the stability of the 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 emptying pipelines are more in straight pipes, condensed methyl methacrylate MMA is often polymerized in the pipelines to block the pipelines, the emptying pipelines are blocked, the tube side materials of the E2106 heat exchanger are not flowing, polymer blocking tubes are formed, workers in the workshop disassemble the pipelines each time when the pipelines block equipment, workers in the workshop disassemble the upper and lower seal heads of the E2106, and electric drills and wrenches are needed each time, and the equipment is replaced with gaskets again. When in production, the unpacking head is inspected, firstly, fluctuation is caused to production index control, but esterified gas can be discharged into the atmosphere, and the environment is polluted. After the pipeline is blocked, MMA and methanol liquid are stored in the original pipeline during disassembly, a non-explosion-proof tool cannot be used, 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 emptying pipeline mechanism which enables an emptying pipeline to be smooth, production equipment is not pressurized, and air pollution and potential safety hazards are reduced.
The technical scheme adopted for solving the technical problems is as follows:
an MMA esterification emptying pipeline mechanism 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 diversion pipeline is clamped and fixed through an auxiliary mechanism. According to the invention, the inclined pipeline can reduce the straight pipe section on the pipeline, condensed MMA flows downwards smoothly, the pipeline is not easy to be blocked, and meanwhile, the diversion pipeline is fixed in an auxiliary way through the auxiliary mechanism, so that the stability of the pipeline is enhanced.
Further, the auxiliary mechanism comprises a base, a supporting mechanism vertically arranged on the base and an outer sleeve; the outer sleeve is arranged at 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 rotating piece is internally connected with a threaded rod in a threaded manner, a plurality of pressing rods which incline towards the central shaft of the threaded rod are arranged at the edge of the upper end of the threaded rod, and the pressing rods are used for clamping the diversion pipeline; the supporting mechanism upper end is provided with the locating plate, set up the through-hole on the locating plate, the through-hole sets up with the threaded rod is coaxial, and 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, water conservancy diversion pipeline passes through-hole, threaded rod inside in proper order. During operation, the rotating piece rotates in the outer sleeve, so that the threaded rod moves upwards, the pressing rod stretches into the through hole, and the pressing rod further inclines towards the central shaft of the threaded rod under the action of the through hole, so that the pressing rod clamps the diversion pipeline, and the stability of the diversion pipeline is improved.
Further, a plurality of vertical clamping grooves are uniformly distributed on the periphery of the end part of the rotating piece, 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 is used for being buckled in the clamping groove. When the rotary part is used, after the position of the threaded rod is adjusted, the clamping bar can be rotated to place the clamping bar into the clamping groove so as to prevent the rotary part from rotating.
Further, the supporting mechanism is a fixed 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 locating plate and the sleeve are both arranged 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 diversion pipeline is flexibly selected.
Furthermore, the inner side surface of the end part of the pressing rod is provided with an anti-skid gasket, or the inner side surface of the end part of the pressing rod is horizontally provided with a rack, so that an anti-skid effect is achieved when the diversion pipeline is clamped.
The invention has the technical effects that:
compared with the prior art, the MMA esterification emptying pipeline mechanism changes the emptying pipeline into an obliquely upward pipeline, reduces straight pipe sections on the pipeline, ensures smooth downward flow of condensed MMA, and reduces blockage of the emptying pipeline; the auxiliary clamping and fixing device is used for carrying out auxiliary clamping and fixing on the pipeline through the auxiliary mechanism, and can be suitable for clamping guide pipelines with various pipe diameters.
Drawings
FIG. 1 is a schematic diagram of the mechanism of MMA esterification blow-down line in example 1 of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic diagram of the structure of a positioning plate according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the structure 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 diagram showing the structural principle of MMA esterification blow-down line mechanism in example 2 of the present invention.
In the figure, 1, a tank body; 2. an absorption tower; 3. a vent line; 4. a fixed rod; 5. a base; 6. a telescopic rod; 7. an outer sleeve; 8. a fixing seat; 9. a rotating member; 10. a threaded rod; 11. a pressing rod; 12. a positioning plate; 13. a through hole; 14. clamping strips; 15. an extension rod; 31. a horizontal pipeline; 32. tilting the pipeline; 33. a diversion pipeline; 34. a tee joint; 91. an upper protrusion; 92. an inner sleeve; 93. a lower protrusion; 94. a vertical clamping groove; 331. an upper pipeline; 332. and (5) descending a pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings of the specification.
Example 1:
as shown in fig. 1, the MMA esterification vent line mechanism according to the present embodiment includes a tank 1, an absorption tower 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 diversion pipeline 33 and an inclined pipeline 32 which is inclined upwards, the inclined pipeline 32 can reduce straight pipe sections on the pipeline, condensed MMA flows downwards smoothly, and the pipeline is not easy to block; the horizontal pipeline 31 is connected with the absorption tower 2, the vertical diversion pipeline 33 is connected with the tank body 1, and the horizontal pipeline 31, the inclined pipeline 32 and the vertical diversion pipeline 33 are connected through a tee joint 34; the diversion line 33 is clamped and fixed by an auxiliary mechanism.
As shown in fig. 1 and 2, the auxiliary mechanism comprises a base 5, a supporting mechanism, an outer sleeve 7, a fixed seat 8, a rotating piece 9, a threaded rod 10, a pressing rod 11, a positioning plate 12, a through hole 13 and a clamping strip 14; the supporting mechanism in the embodiment is a fixed rod 4 and is vertically arranged on a base 5; the outer sleeve 7 is arranged on one side of the upper end of the fixed rod 4 through a fixed seat 8, and a rotating piece 9 is sleeved in the outer sleeve 7.
As shown in fig. 2, 4 and 5, in order to facilitate the installation of the rotary member 9 in the outer sleeve 7, the rotary member 9 according to the present embodiment has an i-shaped longitudinal section and includes an upper protrusion 91, an inner sleeve 92 and a lower protrusion 93, where the upper protrusion 91 is integrally connected or welded to the middle sleeve 92, and the lower protrusion 93 is detachably connected, such as fastened or screwed, to the middle sleeve 92; the intermediate sleeve 92 is hollow inside and provided with an internal thread.
As shown in fig. 2, the threaded rod 10 penetrates the inside of the rotary member 9 and is screwed with the rotary member 9; the inside cavity of threaded rod 10 and upper end border department are provided with a plurality of clamp bars 11 that incline to threaded rod 10 center pin, and clamp bars 11 equipartition is in the water conservancy diversion pipeline 33 periphery for press from both sides tight water conservancy diversion pipeline 33.
In order to further fix the rotating member 9, a plurality of vertical clamping grooves 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 clamping grooves 94 are uniformly distributed on the periphery of the upper protrusion 91; a clamping strip 14 is hinged to one side of the fixed rod 4, and the clamping strip 14 is positioned on one side of the clamping groove 94 and is used for being buckled in the clamping groove 94; in order to facilitate the placement of the clamping strip 14, the vertical clamping groove 94 has an upper opening and a lower closing structure, and when the position of the threaded rod 10 is adjusted, the clamping strip 14 is placed into the clamping groove 94 by rotating the clamping strip 14, so as to prevent the rotating member 9 from rotating.
As shown in fig. 2 and 3, the upper end of the fixing rod 4 is provided with a positioning plate 12, the positioning plate 12 is provided with a through hole 13, the through hole 13 is coaxially arranged with the threaded rod 10, the inner diameter of the through hole 13 is larger than the outer diameter of the diversion pipeline 33 and smaller than the outer diameter of the threaded rod 10, and the diversion pipeline 33 sequentially passes through the through hole 13 and the threaded rod 10. When the rotary part 10 rotates in the outer sleeve 7, the threaded rod 10 moves upwards, the compression rod 11 stretches into the through hole 13, and under the action of the through hole 13, the compression rod 11 further inclines towards the central axis of the threaded rod 10, so that the compression rod 11 clamps the diversion pipeline 33, and the stability of the diversion pipeline 33 is improved.
Working principle: according to the invention, the emptying pipeline 3 is changed into the obliquely upward pipeline, so that the straight pipe section on the pipeline is reduced, the 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, the potential safety hazard in a workshop is solved, the methanol and the MMA are efficiently recovered, the raw material cost is reduced, and the production unit consumption is reduced.
In addition, the guide pipeline 33 which is vertically arranged is fixed in an auxiliary mode through the auxiliary mechanism, when the guide pipeline 33 is installed, the guide pipeline 33 is clamped according to the through hole 13 penetrating the positioning plate 12 and the inside of the threaded rod 10 from top to bottom under the cooperation of the following structures: the inner diameter of the through hole 13 is larger than the outer diameter of the diversion 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 inclining towards the central shaft of the threaded rod 10 are arranged at the edge of the upper end of the threaded rod 10. I.e. the above-described construction prevents on the one hand 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 axis of the threaded rod 10 under the action of the through hole 13, so that the clamping function of the diversion pipeline 33 is realized; furthermore, clamping of the diversion lines 33 of various pipe diameters can be achieved.
Example 2:
the main structure of the MMA esterification emptying pipeline mechanism related to the embodiment is basically the same as that of the embodiment 1, and the difference is that:
as shown in fig. 6, the supporting mechanism is an electric telescopic rod 6, at this time, an extension rod 15 is disposed at the upper end of the electric telescopic rod 6, and the positioning plate 12 and the sleeve 7 are both mounted on the extension rod 15, so as to avoid affecting the telescopic action of the electric telescopic rod 6, and flexibly select the clamping of different positions of the diversion pipeline 33.
The diversion pipeline 33 comprises an upper pipeline 331 and a lower pipeline 332, and in use, the upper pipeline 331 or the lower pipeline 332 can be selectively clamped by adjusting the positions of the sleeve 7 and the positioning plate 12 up and down through the electric telescopic rod 6. When the lower pipeline 332 needs to be replaced, the upper pipeline 331 is clamped by the clamping rod 11, and the lower pipeline 332 is replaced. The diversion pipeline 33 is divided into an upper part and a lower part, so that the pipeline is convenient to overhaul and replace, and the auxiliary fixing is performed through the auxiliary mechanism during overhaul or replacement, thereby being safe and reliable.
The above embodiments are merely examples of the present invention, and the scope of the present invention is not limited to the above embodiments, and any suitable changes or modifications made by those skilled in the art, which are consistent with the claims of the present invention, shall fall within the scope of the present invention.
Claims (9)
1. An MMA esterification emptying pipeline mechanism is characterized in that: comprises a tank body, an absorption tower and a vent 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 vertical diversion pipeline is clamped and fixed through an auxiliary mechanism;
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 at 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 rotating piece is internally connected with a threaded rod in a threaded manner, a plurality of pressing rods which incline towards the central shaft of the threaded rod are arranged at the edge of the upper end of the threaded rod, and the pressing rods are used for clamping vertical diversion pipelines; the supporting mechanism upper end is provided with the locating plate, set up the through-hole on the locating plate, the through-hole sets up with the threaded rod is coaxial, and the internal diameter of through-hole is greater than the external diameter of vertical water conservancy diversion pipeline and is less than the external diameter of threaded rod, vertical water conservancy diversion pipeline passes through-hole, threaded rod inside in proper order.
2. The MMA esterification vent line mechanism of claim 1, wherein: a plurality of vertical clamping grooves are uniformly distributed on the periphery of the end part of the rotating piece, and the upper part of each vertical clamping groove is opened and the lower part of each vertical clamping groove is 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.
3. The MMA esterification vent line mechanism of claim 2, wherein: the rotating piece comprises an upper bulge, an inner sleeve and a lower bulge, wherein the upper bulge is integrally connected or welded with the middle sleeve, and the lower bulge is detachably connected with the middle sleeve.
4. A MMA esterification blow down line mechanism according to claim 3, wherein: the upper bulge or the lower bulge is provided with a clamping groove.
5. A MMA esterification blow down line mechanism according to claim 2 or 3, characterized in that: the supporting mechanism is a fixed rod, an electric telescopic rod, an oil cylinder or an air cylinder.
6. The MMA esterification vent line mechanism of claim 4, wherein: 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 arranged on the extension rod.
7. The MMA esterification vent line mechanism of claim 5, wherein: the vertical diversion pipeline comprises an upper pipeline and a lower pipeline.
8. The MMA esterification vent line mechanism of claim 1, wherein: the outer sleeve is arranged on one side of the upper end of the fixed rod through the fixed seat.
9. The MMA esterification blow down line mechanism according to claim 1 or 2 or 3 or 6 or 7, characterized in that: the inner side surface of the end part of the pressing rod is provided with an anti-slip gasket, or the inner side surface of the end part of the pressing rod is horizontally provided with a rack.
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 CN115253605A (en) | 2022-11-01 |
| CN115253605B true CN115253605B (en) | 2024-01-12 |
Family
ID=83750787
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 |
Country Status (1)
| Country | Link |
|---|---|
| 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-liquid separating device of well head of gas well |
| 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-liquid separating device of well head of gas well |
| 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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| Publication number | Publication date |
|---|---|
| CN115253605A (en) | 2022-11-01 |
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