CN203355696U - Catalyst filling assembly capable of realizing safe online mounting and dismounting - Google Patents
Catalyst filling assembly capable of realizing safe online mounting and dismounting Download PDFInfo
- Publication number
- CN203355696U CN203355696U CN 201320448436 CN201320448436U CN203355696U CN 203355696 U CN203355696 U CN 203355696U CN 201320448436 CN201320448436 CN 201320448436 CN 201320448436 U CN201320448436 U CN 201320448436U CN 203355696 U CN203355696 U CN 203355696U
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- seal
- gland
- mounting box
- pipe
- ascending pipe
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Abstract
The utility model discloses a catalyst filling assembly capable of realizing safe online mounting and dismounting. The catalyst filling assembly comprises a plug valve, a sleeve, a sealing member mounting box, a sealing member, a gland, a filling pipe and a conveying pipe, wherein a valve body of the plug valve is fixed with a polymerization reactor; the sleeve penetrates through the plug valve and extends into the polymerization reactor; the sealing member mounting box is connected with the plug valve; the sealing member is arranged in the sealing member mounting box; one end of the gland extends into the sealing member mounting box to be in butted joint with the sealing member so as to tightly press or loosen the sealing member; the filling pipe is detachably fixed with the gland; the conveying pipe is connected with the filling pipe; the gland, the sealing member mounting box, the sealing member, a valve core of the plug valve and the sleeve are all provided with a channel for the filling pipe to pass through, and an isolation valve is arranged on the filling pipe and used for connecting or isolating inner cavities of the conveying pipe and the filling pipe; and a one-way valve for the filling pipe to extend inwards is arranged in the gland. The catalyst filling assembly safely and effectively realizes online mounting and dismounting of the filling pipe during blocking by means of a simple structure, so that potential safety hazards are eliminated, the production efficiency is improved, the labor intensity is reduced, and the production loss is reduced.
Description
Technical field
The utility model relates to a kind of catalyst fill assembly, relate in particular to a kind of catalyst fill assembly of online dismounting safely, for a small amount of continuously of olefinic polyreaction still solid catalyst, accurately feed in raw material, can realize safely shifting out online or the feed pipe of packing into, the online problem that solves the obstruction of catalyst pipeline, be specially adapted in the test and production of petrochemical industry.
Background technology
In chemical industry is produced, often need to or react and carry out adding solid catalyst to reactor in process before reaction, this will use solid catalyst feeder.Solid catalyst feeder is a kind of precision instrument, in petrochemical industry, especially in polymerization reaction kettle, is widely used, and its operation is careless slightly just easily brings very large loss.The catalyst charging system of polymerization reaction kettle is comprised of catalyst storage tank, decelerator, metering device and fill assembly four major parts, wherein, the effect of catalyst fill assembly is the catalyst required polymerisation, from storage tank after metering evenly, stably in injecting reactor, be the key equipment of gas phase fluidization bed reaction technique.In prior art, the catalyst fill assembly generally is comprised of parts such as ascending pipe, gland, seal, plug valve, sleeve pipe and cleaning hoses, the gas fluidised bed polymerisation reactor, in the normal operation situation, uses high pressure nitrogen that catalyst is blown in reactor by ascending pipe.In order to prevent that reaching pipeline opening around the catalyst ascending pipe has polymer coalescent, people introduce olefin gas from cleaning hose, purge the space between catalyst ascending pipe and sleeve pipe.
Usually, the polymerization reaction kettle operating pressure is in 2.0～4.0MPa scope.Polymerization reaction kettle is in macrocyclic running, in the catalyst ascending pipe and the space between sleeve pipe of catalyst fill assembly, polymerization single polymerization monomer is also assembled synthetic macromolecular compound, purge the space between ascending pipe and sleeve pipe even be provided with cleaning hose, but move for a long time, these macromolecular compounds still can reach the pipeline opening adhesion and become piece around the catalyst ascending pipe, when serious, polymer can be clogged the full catalyst injection mouth of pipe, cause catalyst can't continue to inject exactly, make the polymerisation fluctuation, even cause the stopping of reaction, affecting product quality even stops production, run into this situation, need dismounting catalyst fill assembly to be dredged and then attach it on polymerization reaction kettle.Current catalyst fill assembly, problem due to the structure setting, online dismounting safely, this be because: when ascending pipe stops up, if online, process, in extracting out and inserting the process of ascending pipe, the high pressure gas cognition in reactor plays a reversed role out by the gap between sleeve pipe and ascending pipe, and the personnel that cause injure or detonation.So in the ordinary course of things, for safety operation, whole materials that can only stop production in release emptying polymerization reaction kettle, just can carry out the dismounting dredging work of catalyst ascending pipe after displacement fully, this just causes the interior a large amount of emptying wastes of polymerization single polymerization monomer of reactor and expends a large amount of time, usually, the dismounting dredging work of this type of catalyst fill assembly is carried out once, and the emptying wastage of the polymerization single polymerization monomer caused is 2-3 times of reactor volume.
As can be seen here, how prior art is improved, a kind of new catalyst fill assembly is provided, can carry out safely online dismounting, cut the waste, increase work efficiency, this is the current technical issues that need to address in this area.
The utility model content
In order to solve above-mentioned the deficiencies in the prior art, the purpose of this utility model is, a kind of catalyst fill assembly of online dismounting safely is provided, and increases work efficiency, and cuts the waste.
For solving above technical problem, the technical solution of the utility model is:
A kind of catalyst fill assembly of online dismounting safely, comprise the plug valve that valve body and polymerization reaction kettle are fixing, pass plug valve and extend into the sleeve pipe in polymerization reaction kettle, the seal mounting box be connected with plug valve, be arranged on the seal in the seal mounting box, one end stretches into the gland that with the seal butt, seal is compressed or unclamps in the seal mounting box, with the detachable fixing ascending pipe of gland, the carrier pipe be connected with ascending pipe, described gland, the seal mounting box, seal, the spool of plug valve, sleeve pipe is equipped with the passage passed through for ascending pipe, described ascending pipe is provided with separation valve door, described separation valve door is by the inner chamber conducting of carrier pipe and ascending pipe or isolated, be provided with the check valve only inwardly stretched into for ascending pipe in described gland.
Preferably, gland stretches into the seal mounting box an end and seal mounting box are threaded connection.
Preferably, described seal comprises leading section, middle part, rearward end adjacent and that split arranges successively along its axis direction, and described leading section, middle part, rearward end adopt the phase embedding to connect.
Preferably, along the axis direction of described seal, described leading section is concave surface or the convex surface coordinated with middle part near a side surface at middle part, and described leading section is plane near a side surface of gland.
Preferably, along the axis direction of described seal, described rearward end is concave surface or the convex surface coordinated with middle part near a side surface at middle part, and the opposite side surface is plane.
Preferably, along described seal axis direction, the segmentation that described middle part is connected by three above phase embeddings forms.
Preferably, described separation valve door is connected and fixed by screw and described gland in company with described ascending pipe.
Preferably, described seal mounting box is connected by screw with described plug valve.
Preferably, in described seal mounting box, be provided with pad, described pad is positioned at the side of seal away from gland, and the opposite side of pad contacts with the wall of described seal mounting box.
Preferably, described ascending pipe is connected by articulation with described carrier pipe.
The catalyst fill assembly of online dismounting safely of the present utility model, owing between carrier pipe and ascending pipe, separation valve door being set, make at the dismounting ascending pipe and enable carrier pipe and ascending pipe conducting or isolated, in gland, arrange check valve make ascending pipe when inwardly stretching into can by and can be automatically by the gland closure when outwards extracting, make the material in polymerization reaction kettle can not leak, so in polymerization process, when the situation of obstruction appears in the catalyst ascending pipe, in the situation that do not stop, can safe and convenient ground ascending pipe be shifted out to reactor, cleared up or changed, and the reactor of packing at an easy rate, thereby the utility model energy safety, effectively process online the disassemble and assemble work after the catalyst ascending pipe stops up, do not need polymerization reaction kettle is stopped production, release, the operations such as displacement, eliminated potential safety hazard, enhance productivity, reduce labour intensity, reduce production loss, and this assembly is simple, small and exquisite, easy to operate, has very high security.
Further, the version that seal of the present utility model adopts many parts split to arrange, the type of attachment of phase embedding before and after being adopted by leading section, middle part, rearward end, ascending pipe extract out and insertion process in by compression or loosen each several part, play the effect that blocking reaction still inner high voltage hydrocarbon gas leaks, not only be conducive to sealing but also can avoid ascending pipe to be crushed out of shape, make it insert smoothly and to pull out, improve security and the convenience of dismounting.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation of the catalyst fill assembly embodiment of online dismounting safely;
The overall structure schematic diagram that Fig. 2 is seal in Fig. 1;
The overall structure schematic diagram that Fig. 3 is seal leading section in Fig. 2;
Fig. 4 is the seal middle part structural representation of a segmentation wherein in Fig. 2;
The structural representation that Fig. 5 is seal rearward end in Fig. 2;
In figure, relevant Reference numeral is as follows:
1---articulation; 2---valve; 3---check valve; 4---screw; 5---seal;
51---the seal leading section; 52---segment section in seal; 53---the seal rearward end;
6---plug valve; 7---sleeve pipe; 8---cleaning hose; 9---pad; 10---the seal mounting box;
11---O type ring; 12---screw; 13---gland; 14---screw;
15---ascending pipe; 16---carrier pipe.
The specific embodiment
For making the technical solution of the utility model clearer, below in conjunction with accompanying drawing, by specific embodiment, the utility model is elaborated.
The utility model is to take existing catalyst reactor fill assembly as basis, has increased a valve, and the structure of seal is improved.
Referring to Fig. 1～Fig. 5, the catalyst fill assembly of online dismounting safely for polymerization reaction kettle in the present embodiment comprises: articulation 1, separation valve door 2, check valve 3, screw 4, seal 5, plug valve 6, sleeve pipe 7, cleaning hose 8, pad 9, seal mounting box 10, O type ring 11, screw 12, gland 13, screw 14, ascending pipe 15, carrier pipe 16.
Wherein, the valve body of plug valve 6 is fixed on the wall of polymerization reaction kettle, and seal mounting box 10 is connected with plug valve 6 by screw 4, is filled with tubular seal 5 in seal mounting box 10.Along the axis direction of seal, seal 5 comprises seal leading section 51, seal middle part, the seal rearward end 53 that the phase embedding connects successively; Wherein, the one side of seal leading section is plane 51a, and another side is the cone cylinder body shape convex surface 51b chimeric with seal middle part 52; The seal middle part comprises three segmentations 52 that split arranges, and the structure of each segmentation 52 is identical, and one side is concave surface 52a, and another side is convex surface 52b, and the concave surface of a segmentation and the convex surface of another segmentation are suitable; The convex surface 51b of concave surface 52a and leading section 51 is suitable; The one side of seal rearward end 53 is concave surface 53a, and another side is plane 53b, and the convex surface 52b of the segmentation at this concave surface 53a and seal middle part is suitable.
Gland 13 is by screw thread precession seal mounting box 10, and the leading section butt of seal 5 in the end of stretching into the seal mounting box on it and seal mounting box 10, so pass through inside or outside rotary gland 13, the tightness of adjustable sealing part 5; Gland 13 comprises the two parts that connect by screw 12, and this two-part junction is provided with the O type ring 11 for sealing; In order to protect seal 5, pad 9 is installed in seal mounting box 10, pad 9 one sides contact with the rearward end of seal 5, and one side contacts with the inwall of seal mounting box 10.
Ascending pipe 15 1 ends are connected with carrier pipe 16 use articulations 1.Carrier pipe 16 is for to ascending pipe 15 feed gases or carry catalyst.Separation valve door 2 is arranged on gland 13 by screw 14 with ascending pipe 15, after the spool of the other end of ascending pipe 15 through the plug valve in gland 13, seal mounting box 10, sleeve pipe 7, sleeve pipe 7, extend in polymerization reaction kettle, in actual use, use high pressure nitrogen that catalyst is blown in polymerization reaction kettle by ascending pipe 15.Gland 13, seal 5, seal mounting box 10 all are provided with the passage passed through for ascending pipe.There is a check valve 3 gland 13 inside, and after ascending pipe 15 is extracted out, check valve 3 is closed, prevent material in polymerization reaction kettle by gland to outward leakage.
Cleaning hose 8 is provided with valve, and the passage passed through for ascending pipe in cleaning hose 8 and seal mounting box 10 is connected, and then connects with sleeve pipe 7; In actual use, from cleaning hose 8, introduce olefin gas, purge the space between catalyst ascending pipe 15 and sleeve pipe 7, prevent that polymer is coalescent at this.
The catalyst fill assembly of online dismounting safely of the present embodiment, its course of work is as follows:
1,, when needs shift out reactor online by the catalyst ascending pipe, adopt following steps:
1) catalyst charge of confirming input pipe is closed;
2) close the valve on separation valve door 2 and cleaning hose 8; Back out articulation 1, carrier pipe 16 is separated with ascending pipe 15;
3) unscrew screw 14, separation valve door 2 is separated with gland 13 in company with ascending pipe 15;
4) separation valve door 2 and ascending pipe 15 are done as a whole to the Zola, constantly screwed gland 13, make seal 5 around ascending pipe 15 all the time in the press seal state, can prevent that the gases at high pressure in reactor from playing a reversed role out simultaneously;
5) pass through plug valve 6 in ascending pipe 15 extractions after, cut-out tap valve 6, can prevent the high pressure gas leakage in reactor;
6), pass through seal 5 in ascending pipe 15 extractions after, by gland 13, to the direction rotation that stretches into seal mounting box inside, press seal part 5, prevent that gas or the interior purge gas of cleaning hose 8 in reactor from leaking;
7) after ascending pipe 15 is retracted to check valve 3, check valve 3 is closed automatically, prevents that Leakage Gas from, to gland 13, playing the function of dual fail-safe;
If it is longer that ascending pipe is extracted the time of processing out, in order to prevent polymer plugging sleeve pipe 7, need to open the valve on plug valve 6 and cleaning hose 8 flow processs, pass into purge gas.
2, when needs insert polymerization reaction kettle online by ascending pipe 15, adopt following steps:
1) ascending pipe 15 is connected with separation valve door 2 and do as a wholely, connect articulation 1, carrier pipe 16 and ascending pipe 15 are coupled together.Open carrier pipe 16 and valve 2, to ascending pipe 15 supplying nitrogens, by the clean rear valve-off 2 of nitrogen replacement for the air in ascending pipe 15;
2) ascending pipe 15 is passed to gland 13, seal 5, suitably rotary gland 13, unclamp seal 5, is convenient to ascending pipe 15 smoothly through seal 5.But should note making seal 5 excessively loose, prevent from space occurring around ascending pipe 15, cause the gas leakage of playing a reversed role;
3) if plug valve 6, in closed condition, is opened plug valve 6, make ascending pipe 15 continue to insert through plug valve 6, the end of ascending pipe 15 enters into polymerization reaction kettle;
4), after ascending pipe 15 is inserted into the degree of depth that polymerization reaction kettle is suitable, tighten the screws 14, be fixed on ascending pipe 15 and valve 2 on gland 13;
5) open valve 2, make catalyst to ascending pipe 15 chargings, by ascending pipe 15, in reactor, pass through injecting catalyst.
If the valve on cleaning hose 8, in closed condition, is opened valve, pass into purge gas.
Seal in the utility model owing to being the segmented embedded structure, by compressing or loosening each several part, plays the effect that blocking reaction still inner high voltage hydrocarbon gas leaks in ascending pipe 15 extractions and insertion process.The design form of this sectionally assembled seal in the present embodiment, be conducive to sealing and can avoid ascending pipe 15 to be crushed out of shape, and makes it insert smoothly and to pull out.Seal in the present embodiment like the prior art, adopts polytetrafluoroethylene (PTFE) or graphite material to make.
Be below only preferred embodiment of the present utility model, it should be pointed out that above-mentioned preferred embodiment should not be considered as restriction of the present utility model, protection domain of the present utility model should be as the criterion with the claim limited range.For those skilled in the art, within not breaking away from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
- One kind can be safely the catalyst fill assembly of online dismounting, comprise the plug valve that valve body and polymerization reaction kettle are fixing, pass plug valve and extend into the sleeve pipe in polymerization reaction kettle, the seal mounting box be connected with plug valve, be arranged on the seal in the seal mounting box, one end stretches into the gland that with the seal butt, seal is compressed or unclamps in the seal mounting box, with the detachable fixing ascending pipe of gland, the carrier pipe be connected with ascending pipe, described gland, the seal mounting box, seal, the spool of plug valve, sleeve pipe is equipped with the passage passed through for ascending pipe, it is characterized in that, described ascending pipe is provided with separation valve door, described separation valve door is by the inner chamber conducting of carrier pipe and ascending pipe or isolated, be provided with the check valve only inwardly stretched into for described ascending pipe in described gland.
- 2. the catalyst fill assembly of online dismounting safely as claimed in claim 1, is characterized in that, an end and described seal mounting box that described gland stretches into described seal mounting box are threaded connection.
- As claimed in claim 1 can be safely the catalyst fill assembly of online dismounting, it is characterized in that, described seal comprises leading section, middle part, rearward end adjacent and that split arranges successively along its axis direction, and described leading section, middle part, rearward end adopt the phase embedding to connect.
- As claimed in claim 3 can be safely the catalyst fill assembly of online dismounting, it is characterized in that, along the axis direction of described seal, described leading section is concave surface or the convex surface coordinated with middle part near a side surface at middle part, and described leading section is plane near a side surface of gland.
- 5. the catalyst fill assembly of online dismounting safely as claimed in claim 3, is characterized in that, along the axis direction of described seal, described rearward end is concave surface or the convex surface coordinated with middle part near a side surface at middle part, and the opposite side surface is plane.
- 6. the catalyst fill assembly of online dismounting safely as claimed in claim 3, is characterized in that, along described seal axis direction, the segmentation that described middle part is connected by three above phase embeddings forms.
- 7. the catalyst fill assembly of online dismounting safely as claimed in claim 1, is characterized in that, described separation valve door is connected and fixed by screw and described gland in company with described ascending pipe.
- 8. the catalyst fill assembly of online dismounting safely as claimed in claim 1, is characterized in that, described seal mounting box is connected by screw with described plug valve.
- As claimed in claim 1 can be safely the catalyst fill assembly of online dismounting, it is characterized in that, be provided with pad in described seal mounting box, described pad is positioned at the side of seal away from gland, and the opposite side of described pad contacts with the wall of described seal mounting box.
- 10. the catalyst fill assembly of online dismounting safely as claimed in claim 1, is characterized in that, described ascending pipe is connected by articulation with described carrier pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320448436 CN203355696U (en) | 2013-07-25 | 2013-07-25 | Catalyst filling assembly capable of realizing safe online mounting and dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320448436 CN203355696U (en) | 2013-07-25 | 2013-07-25 | Catalyst filling assembly capable of realizing safe online mounting and dismounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203355696U true CN203355696U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320448436 Expired - Lifetime CN203355696U (en) | 2013-07-25 | 2013-07-25 | Catalyst filling assembly capable of realizing safe online mounting and dismounting |
Country Status (1)
| Country | Link |
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| CN (1) | CN203355696U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044451A (en) * | 2016-10-28 | 2017-08-15 | 沈阳透平机械股份有限公司 | Compressor water filling oiling device and its application method |
| CN108686588A (en) * | 2018-06-07 | 2018-10-23 | 超达阀门集团股份有限公司 | It is a kind of can Hand scarf catalyst injection device |
-
2013
- 2013-07-25 CN CN 201320448436 patent/CN203355696U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107044451A (en) * | 2016-10-28 | 2017-08-15 | 沈阳透平机械股份有限公司 | Compressor water filling oiling device and its application method |
| CN108686588A (en) * | 2018-06-07 | 2018-10-23 | 超达阀门集团股份有限公司 | It is a kind of can Hand scarf catalyst injection device |
| CN108686588B (en) * | 2018-06-07 | 2023-11-28 | 超达阀门集团股份有限公司 | Catalyst injection device capable of being cleaned on line |
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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: 20131225 |