CN117299012A - Multipurpose combined device for polyolefin production and application of multipurpose combined device in combined flexible production - Google Patents
Multipurpose combined device for polyolefin production and application of multipurpose combined device in combined flexible production Download PDFInfo
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- CN117299012A CN117299012A CN202210713384.6A CN202210713384A CN117299012A CN 117299012 A CN117299012 A CN 117299012A CN 202210713384 A CN202210713384 A CN 202210713384A CN 117299012 A CN117299012 A CN 117299012A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 229920000098 polyolefin Polymers 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 239000003054 catalyst Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- -1 polyethylene Polymers 0.000 claims abstract description 20
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 18
- 229920001155 polypropylene Polymers 0.000 claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims abstract description 12
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 238000007670 refining Methods 0.000 claims abstract description 7
- 238000007872 degassing Methods 0.000 claims description 16
- 238000011084 recovery Methods 0.000 claims description 14
- 229920013716 polyethylene resin Polymers 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 7
- 230000000996 additive effect Effects 0.000 claims description 7
- 239000000178 monomer Substances 0.000 claims description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 6
- 230000002902 bimodal effect Effects 0.000 claims description 3
- 229920005633 polypropylene homopolymer resin Polymers 0.000 claims description 2
- 238000010092 rubber production Methods 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 7
- 239000005977 Ethylene Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 239000002685 polymerization catalyst Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000012968 metallocene catalyst Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- SXSVTGQIXJXKJR-UHFFFAOYSA-N [Mg].[Ti] Chemical compound [Mg].[Ti] SXSVTGQIXJXKJR-UHFFFAOYSA-N 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000012685 gas phase polymerization Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000006072 paste Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
- B01J8/26—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique with two or more fluidised beds, e.g. reactor and regeneration installations
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/02—Ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/06—Propene
Abstract
The invention relates to a multipurpose combination device for polyolefin production and application thereof in combined flexible production. The device comprises a polymerization reaction mechanism, a gas discharge mechanism and a finished product storage mechanism which are connected in sequence; the polymerization mechanism comprises at least one set or a plurality of sets of fluidized bed reaction units which are connected in series/parallel. The fluidized bed reaction unit is connected with a raw material supply and refining unit (10); the fluidized bed reaction unit is connected with a catalyst feeding unit (14). The fluidized bed reaction unit comprises a vertical gas-phase fluidized bed reactor with an expansion section at the top. The device is applied to the production of polyethylene, polypropylene or ethylene propylene rubber. Compared with the prior art, the invention can be realized by flexibly combining and operating the device according to the upstream raw material supply condition and the market resin brand demand condition.
Description
Technical Field
The invention relates to the field of polyolefin production devices, in particular to a multipurpose combined device for polyolefin production and application thereof in combined flexible production.
Background
The ethylene and propylene polymer has the characteristics of no toxicity, no smell, good low temperature resistance, good chemical stability and chemical corrosion resistance, simplicity, easiness in obtaining, low price and the like, and is the most widely used general synthetic resin material at present and used for pipelines, retail and medicine packaging, food and beverage packaging, plastic bags, household articles, various industrial products and the like.
In recent years, with the development of polymerization technology, which is a technology of combining simple molecular structural units into a longer chain (or polymer), there are many routes of process technology for ethylene polymerization and propylene polymerization, and gas-phase fluidized-bed polymerization process technology is one of them. The types of catalysts compatible with gas-phase fluidized-bed polymerization processes are numerous and different, such as titanium-based catalysts, chromium-based catalysts, vanadium-based catalysts, metallocene catalysts, etc., for example, dry powder, slurry, paste, sludge, etc.
However, the independent gas phase polymerization process has the advantages of huge reaction volume, poor heat transfer capability, low single pass conversion rate, wide product range, slow conversion of different products, more transition materials and high conversion difficulty among different system catalysts, so that the independent devices have poor operation flexibility, are difficult to adapt to the requirements of markets on the flexibility of resin brands, and are difficult to flexibly cope with the change of upstream raw material supply.
To increase the capacity of the polymerization line or to obtain certain desired polymer characteristics, processes are used which involve higher investment, larger floor space, more labour-intensive series of reactors, or parallel connection of identical reactors. However, the process routes of the type are independent and are not transversely related to each other, and the production device which is purely based on the process technical characteristics is a device and a production technology for preparing the polymer under normal working conditions. For example, CN100376605C shows that the purpose of producing polyolefin resins having a broad molecular weight distribution is achieved by adjusting the fluidization velocity in a single gas-phase fluidized-bed reactor. Italian patent 690208 describes a polymerization process employing two fluidized bed gas phase reactors. CN1083491a also discloses a process for the gas-phase polymerization of olefins, with recycling of polymer of the polymer being carried out between the reactors connected in series by means of a transfer line. Therefore, a device and a process technology thereof are not found, and the device can adapt to the upstream and downstream raw material supply condition and market demand condition, and the technical advantages, the cost advantages and the industrial advantages of the combined device are maximally and optimally exerted.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a multi-purpose combined device for polyolefin production, which can be realized by flexibly combining and operating the device according to the upstream raw material supply condition and market resin brand demand condition, and the application of the multi-purpose combined device in combined flexible production.
The aim of the invention can be achieved by the following technical scheme:
the invention relates to a multipurpose polyethylene polypropylene associated sharing device, which comprises sharing combination of gas-phase fluidized bed process technology devices most commonly adopted in a plurality of sets of industries, and an advanced polymerization catalyst technology and a charging system technology which are matched with the sharing combination; the gas-phase fluidized bed process technology devices of the plurality of sets are related to a sharing technology, so that the yield and variety proportion of polyethylene/polypropylene products can be flexibly adjusted according to the upstream raw material supply condition; the structure and grade of the product, such as general materials, special materials or high-grade materials, can be adjusted according to the downstream market demand; the polymerization catalyst can be classified into a magnesium-titanium catalyst, a chromium catalyst and a metallocene catalyst according to the types, and can be classified into a dry powder state, a slurry state, a paste state and a sludge state according to the forms; according to the functional distinction, the polyethylene catalyst can be divided into a unimodal catalyst, a bimodal catalyst, a ternary polymerization catalyst, a medium and broad Molecular Weight Distribution (MWD) catalyst and a metallocene catalyst, the polypropylene catalyst can be divided into a homo-polymerization catalyst, a copolymerization catalyst and a metallocene catalyst, and the ethylene propylene rubber catalyst can be divided into a binary EPM catalyst and an ethylene propylene diene monomer EPDM catalyst, and the specific scheme is as follows:
a multi-purpose combined device for polyolefin production comprises a polymerization reaction mechanism, a gas discharge mechanism and a finished product storage mechanism which are connected in sequence; the polymerization mechanism comprises at least one set or a plurality of sets of fluidized bed reaction units which are connected in series/parallel.
Further, the fluidized bed reaction unit is connected with a raw material supply and refining unit; the fluidized bed reaction unit is connected with the catalyst feeding unit.
The catalyst may be in various forms, such as dry powder, slurry, paste, mud, and the corresponding feeding system and metering method matched with the catalyst.
Further, the fluidized bed reaction unit comprises a vertical gas-phase fluidized bed reactor with an expansion section at the top.
The device also comprises a circulating gas pipeline at the top outlet, a circulating gas flow measurement device, a supercharging unit, an inlet circulating gas flow regulating blade of the supercharging unit, a circulating gas cooler, a circulating gas pipeline returning to the fluidized bed device from the bottom, a capacity load controller, a resin level controller, a discharging pipeline, a temperature controller, an electrostatic detector and controller, a polymerization termination controller, a caking detector, a gas phase component online analyzer, a concentration controller and the like.
Further, the fluidized bed reaction unit is a set and is used for producing unimodal polyethylene resin, homo-polypropylene resin or ethylene propylene rubber EPM.
Further, the fluidized bed reaction units are two sets which are connected in series and are used for producing bimodal polyethylene resin, copolymerized polypropylene resin or Ethylene Propylene Diene Monomer (EPDM).
Further, the fluidized bed reaction units are two sets of parallel connection and are used for producing polyethylene resin or polypropylene resin.
Further, the fluidized bed reaction units are three sets.
Further, the gas discharge mechanism comprises a resin degassing unit, an exhaust gas recovery unit, a deep monomer recovery unit and a VOC control unit which are connected with each other in sequence; the resin degassing unit is respectively connected with the fluidized bed reaction unit and the finished product storage mechanism.
Further, the finished product storage mechanism comprises an additive feeding unit, a granulating unit, a storage bin storage unit and a packaging line unit which are connected with each other in sequence; the granulating unit is connected with the resin degassing unit.
It can be seen that the polymerization mechanism comprises a shared central control unit, a raw material supply and refining unit and a resin degassing unit, an exhaust gas recovery unit, a deep monomer recovery unit and VOC control unit, an additive feeding unit, a pelleting unit, a silo storage unit, a packaging line unit and a utility system and its associated piping lane, power transformation and distribution, fire control and steam prevention, monitoring of combustible gas and fire, working space and maintenance space, important spare part spare equipment tools, etc. If liquid propylene serving as a raw material is utilized for vaporization, a glycol refrigerant is replaced, and a cold source is provided for cooling and condensing the exhaust gas; the recovered non-condensable gas is shared by all degassing systems; sharing recycled materials and sharing similar machine equipment in different production lines; sharing of supporting utility projects and utilities.
Use of a device as described above for the production of a combined flexible product, for the production of polyethylene, polypropylene or ethylene propylene rubber.
Compared with the prior art, the invention has the following advantages:
(1) In the invention, a gas-phase fluidized bed process technology is adopted, and polyethylene resins with different molecular structures and performances are produced through different combinations among a plurality of reactors; polypropylene resin with different molecular structures and performances can be produced by different combinations of reactors among a plurality of reactors; ethylene propylene rubber with different molecular structures and performances can be produced through different combinations of reactors among a plurality of reactors;
(2) The multipurpose combined device can optimally adjust the output of polyethylene, polypropylene and ethylene propylene rubber according to the upstream raw material supply condition, ensures the reasonable structure of raw material varieties and maintains the balance of raw material supply; the output of polyethylene, polypropylene and ethylene propylene rubber can be optimally regulated according to the downstream market demand condition, so that the market share and the maximization of benefits are ensured;
(3) The invention is suitable for polymerization catalysts with different forms and characteristics, is suitable for different corresponding catalyst feeding systems and metering feeding methods, and has high device flexibility; auxiliary equipment and systems except the main reactor are shared, so that the construction cost is reduced, and the flexibility of the device is improved;
(4) According to the invention, a single reactor or different combinations of 2 reactors connected in series, 2 reactors connected in parallel and the like are adopted, the production capacity can be controlled according to the requirements, the flexible switching of brands is realized, the market change is positively adapted, and the cost is saved; the method is favorable for playing the whole material balance function and sharing function of the large ethylene project and realizing the maximization of economic benefit.
Drawings
FIG. 1 is a schematic diagram of a multi-purpose complex in an embodiment;
the reference numerals in the figures indicate: a raw material supply and refining unit 10, a first fluidized bed reaction unit 11, a second fluidized bed reaction unit 12, a third fluidized bed reaction unit 13, a catalyst charging unit 14, a resin degassing unit 21, an exhaust gas recovery unit 22, a deep monomer recovery unit 23, a VOC control unit 24, an additive charging unit 30, a granulation unit 31, a silo storage unit 32, and a packaging line unit 33.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are provided, but the protection scope of the present invention is not limited to the following embodiments.
Examples
A multi-purpose combined device for polyolefin production is shown in figure 1, which comprises a polymerization reaction mechanism, a gas discharge mechanism and a finished product storage mechanism which are connected in sequence; the polymerization mechanism comprises at least three sets of fluidized bed reaction units, a first fluidized bed reaction unit 11, a second fluidized bed reaction unit 12 and a third fluidized bed reaction unit 13.
The first fluidized bed reaction unit 11 is connected to the raw material supply and purification unit 10; and is also connected to the catalyst addition unit 14. The fluidized bed reaction unit comprises a vertical gas phase fluidized bed reactor with an enlarged section at the top.
The gas discharge mechanism comprises a resin degassing unit 21, an exhaust gas recovery unit 22, a deep monomer recovery unit 23 and a VOC control unit 24 which are connected with each other in sequence; the resin degassing unit 21 is connected to the third fluidized bed reaction unit 13 and the finished product storage mechanism, respectively.
The finished product storage mechanism comprises an additive feeding unit 30, a granulating unit 31, a bin storage unit 32 and a packaging line unit 33 which are connected with each other in sequence; the granulating unit 31 is connected to the resin degassing unit 21.
Application example 1
The commercial magnesium-titanium slurry catalyst SLC-S is selected, the raw material supply and refining unit 10 selects ethylene, 1-butene, hydrogen and T2, the catalyst feeding unit 14 selects a slurry feeding system, and the process control parameters are adjusted. The polyethylene resin is prepared using the first fluidized bed reaction unit 11.
The prepared polyethylene resin enters the resin degassing unit 21, the degassing is finished, the additive is added, the mixture is granulated in the granulating unit 31, then the mixture is fed into the bin storage unit 32, and the preparation of polyethylene resin granules is finished after the packaging is finished in the packaging line unit 33.
The system exhaust gas enters the exhaust gas recovery unit 22, a portion of which may be recovered, such as ethylene, in a deep monomer recovery unit 23 and non-recoverable post-entry VOC control unit 24 for disposal.
Application example 2
The commercial magnesium-titanium SLC-B (40E) is selected, the raw material supply and refining unit 10 selects ethylene, 1-butene, 1-hexene, hydrogen and T2, the catalyst feeding unit 14 selects a dry powder feeding system, and the process control parameters are adjusted. The second fluidized bed reaction unit 12 and the third fluidized bed reaction unit 13 are used in series to prepare the polyethylene resin with wide molecular weight distribution.
The prepared polyethylene resin enters the resin degassing unit 21, the degassing is finished, the additive is added, the mixture is granulated in the granulating unit 31, then the mixture is fed into the bin storage unit 32, and the preparation of polyethylene resin granules is finished after the packaging is finished in the packaging line unit 33.
The system exhaust gas enters the exhaust gas recovery unit 22, a portion of which may be recovered, such as ethylene, in a deep monomer recovery unit 23 and non-recoverable post-entry VOC control unit 24 for disposal.
In summary, the invention can optimize the reactor, adopts single kettle or double kettle parallel or double kettle series polymerization, and uses different polymerization catalysts and production technologies in a matching way to produce the high-end polyolefin resin with different molecular structures and molecular weights. By combining different production devices and combining different production technologies, the variety of the polymerized products can be regulated, and the range of polymer properties can be widened. The device can be flexibly combined and operated according to the upstream raw material supply condition and the market resin brand demand condition.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A multi-purpose combined device for polyolefin production is characterized by comprising a polymerization reaction mechanism, a gas discharge mechanism and a finished product storage mechanism which are connected in sequence; the polymerization mechanism comprises at least one set or a plurality of sets of fluidized bed reaction units which are connected in series/parallel.
2. A multi-purpose combined device for polyolefin production according to claim 1, wherein said fluidized bed reaction unit is connected to a raw material supply and refining unit (10); the fluidized bed reaction unit is connected with a catalyst feeding unit (14).
3. The multipurpose combination for polyolefin production of claim 1, wherein the fluidized bed reaction unit comprises a vertical gas phase fluidized bed reactor with an enlarged section at the top.
4. The multipurpose combination for polyolefin production of claim 1, wherein the fluidized bed reaction unit is a set for producing unimodal polyethylene resin, homo-polypropylene resin or ethylene propylene rubber EPM.
5. The multipurpose combination for polyolefin production of claim 1, wherein the fluidized bed reaction units are two sets connected in series for producing bimodal polyethylene resin, copolymerized polypropylene resin or ethylene propylene diene monomer EPDM.
6. The multipurpose combination for polyolefin production of claim 1, wherein the fluidized bed reaction units are two sets connected in parallel for producing polyethylene resin or polypropylene resin.
7. A multi-purpose integrated apparatus for polyolefin production according to claim 1, wherein the fluidized bed reaction units are three sets.
8. The multipurpose combination for polyolefin production of claim 1, wherein the gas discharge mechanism comprises a resin degassing unit (21), an exhaust gas recovery unit (22), a deep monomer recovery unit (23) and a VOC control unit (24) which are connected to each other in this order; the resin degassing unit (21) is respectively connected with the fluidized bed reaction unit and the finished product storage mechanism.
9. The multipurpose combination for polyolefin production of claim 8, wherein the finished product storage mechanism comprises an additive feeding unit (30), a granulating unit (31), a bin storage unit (32) and a packaging line unit (33) which are connected to each other in this order; the granulating unit (31) is connected with the resin degassing unit (21).
10. Use of a device according to any of claims 1-9 in combination flexible production, wherein the device is applied in polyethylene, polypropylene or ethylene propylene rubber production.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210713384.6A CN117299012A (en) | 2022-06-22 | 2022-06-22 | Multipurpose combined device for polyolefin production and application of multipurpose combined device in combined flexible production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210713384.6A CN117299012A (en) | 2022-06-22 | 2022-06-22 | Multipurpose combined device for polyolefin production and application of multipurpose combined device in combined flexible production |
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| CN117299012A true CN117299012A (en) | 2023-12-29 |
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| CN202210713384.6A Pending CN117299012A (en) | 2022-06-22 | 2022-06-22 | Multipurpose combined device for polyolefin production and application of multipurpose combined device in combined flexible production |
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