CN113583032B - Cracking device and method for boron trifluoride complex - Google Patents
Cracking device and method for boron trifluoride complex Download PDFInfo
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- CN113583032B CN113583032B CN202110836025.5A CN202110836025A CN113583032B CN 113583032 B CN113583032 B CN 113583032B CN 202110836025 A CN202110836025 A CN 202110836025A CN 113583032 B CN113583032 B CN 113583032B
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- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 229910015900 BF3 Inorganic materials 0.000 title claims abstract description 47
- 238000005336 cracking Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 24
- 238000007670 refining Methods 0.000 claims abstract description 21
- 239000008139 complexing agent Substances 0.000 claims abstract description 20
- 239000007791 liquid phase Substances 0.000 claims abstract description 14
- 239000012071 phase Substances 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 13
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical group COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 claims description 8
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 claims description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 21
- 239000000126 substance Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000006227 byproduct Substances 0.000 abstract description 6
- 238000004939 coking Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 8
- 229910052796 boron Inorganic materials 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- ADKFPZYATUZKCR-UHFFFAOYSA-N anisole;trifluoroborane Chemical compound FB(F)F.COC1=CC=CC=C1 ADKFPZYATUZKCR-UHFFFAOYSA-N 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005372 isotope separation Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic System
- C07F5/02—Boron compounds
Abstract
The invention relates to a cracking device and a cracking method of boron trifluoride complex, wherein the method specifically comprises the following steps: and delivering the boron trifluoride complex from a boron trifluoride complex storage tank, preheating a meridian complex preheater, delivering the preheated boron trifluoride complex to a microchannel reaction cracker, delivering the obtained cracked product to a product separator for gas-liquid separation, returning the gas-phase product to the bottom of an exchange tower, delivering the liquid-phase product to a complexing agent refining tower for refining, and delivering the refined liquid-phase product. Compared with the prior art, the invention has the advantages of accurate and controllable reaction temperature, accurate and controllable complex cracking degree, less byproducts, no generation of coking substances, small occupied area of the device, low energy consumption, high efficiency and safety in production and the like, thereby ensuring stable production, long-time operation and improving the yield of the device.
Description
Technical Field
The invention belongs to the technical field of boron trifluoride complex pyrolysis, and relates to a boron trifluoride complex pyrolysis device and method.
Background
Boron is mainly present in water circles and crust sedimentary rock systems as light elements, and sea phase sediments, altered basalt and sea water are the main carriers of boron. Boron belongs to the first element of IIIA group of the periodic system of elements, and has 14 isotopes in total, and the mass number is from 6 to 19 in sequence, wherein only B10 and B11 exist stably in nature, and the half lives of the other 12 isotopes are very short, so that the boron belongs to radioactive isotopes. The natural 10B and 11B abundance contents were 19.8+ -0.2% and 80.2% + -0.2%, respectively. 10B has a large thermal neutron absorption cross-section characteristic, and is widely used in the fields of reactor control and neutron protection in the nuclear industry. 11B and 10B are just opposite and hardly absorb neutrons, so that the material is mainly used as a doping agent in the manufacturing process of a semiconductor device, and the conductivity and the radiation resistance and the interference resistance of the semiconductor device can be effectively improved. Boride as a key manufacturing material of semiconductors has not been limited to the general purity requirement, but has been raised to the concept of isotopic purity, and conventional natural boride has failed to meet the requirement of continuously increasing technology, so separation research on boron isotopes has become a hotspot. The boron isotope separation methods which have been studied at present include boron trifluoride low-temperature rectification method, boron trifluoride chemical exchange rectification method, boric acid solution ion exchange method, serial membrane countercurrent circulation method, infrared laser vibration activated boron trifluoride laser ablation method of oxygen and ammonia, and the like. However, only the chemical exchange rectification method has been used for industrial production for the isotope separation process of boron trifluoride gas.
The boron trifluoride complex is an essential intermediate product for separating boron isotopes by a chemical exchange rectification method, and the stable operation of the reflux of a chemical exchange unit and the bottom of a cracking unit is directly related to the cracking reaction, so that whether the boron isotope separation can be smoothly carried out is determined. In the prior researches, chinese patent CN102774845A discloses a case that a boron trifluoride complex cracking reaction is carried out in a tower, and the operation mode has the problems of difficult control of cracking temperature, incomplete cracking, more byproducts, easy corrosion of tower internals, easy coking and blocking of fillers and the like, and is difficult to ensure that boron trifluoride cracking gas is stably supplied to the bottom of a chemical exchange tower for a long time, so that the production can only be intermittently carried out, and the separation stability and the production capacity of the device are greatly influenced. The development of new lysis methods and devices is urgent.
Disclosure of Invention
The invention aims to provide a cracking device and method for boron trifluoride complex, which solve the problems of difficult control of the temperature, incomplete cracking, more byproducts, easy corrosion, easy coking and blocking and the like of the traditional cracking tower device, thereby ensuring stable production and long-time operation.
The aim of the invention can be achieved by the following technical scheme:
one of the technical schemes of the invention provides a cracking device of boron trifluoride complex, which comprises a boron trifluoride complex storage tank, a complex preheater, a microchannel reaction cracker and a product separator which are connected in sequence.
Furthermore, the microchannel reaction cracker is provided with one stage or a plurality of stages which are sequentially connected in series, a product separator is further connected behind each stage of microchannel reaction cracker, a top gas phase outlet of the product separator is connected with the bottom of the exchange tower in a return way, and a bottom liquid phase outlet is also connected with a next stage of microchannel reaction cracker or a complexing agent refining tower.
Further, the microchannel reaction cracker is provided with two stages, wherein the temperature of the first stage microchannel reaction cracker is 120-150 ℃, preferably 130-140 ℃, and the pressure is 0.3-0.6 mpa.A, preferably 0.4-0.5mpa.A; the temperature of the second stage microchannel reaction cracker is 150-180deg.C, preferably 160-175 deg.C, and the pressure is 0.2-0.5 MPa.A, preferably 0.3-0.4MPa.A. More preferably, the pressure of the product separator after the first stage microchannel reactor cracker is controlled at 0.15 to 4mpa.a, preferably 0.2 to 0.3mpa. More preferably, the pressure of the product separator after the second stage microchannel reactor cracker is controlled to be 0.15 to 0.4mpa.a, preferably 0.2 to 0.3mpa a.
Further, when the microchannel reaction cracker is set to one stage, the temperature is 150-180 deg.c and the pressure is 0.2-0.5 mpa.a.
Furthermore, the operation pressure of the complexing agent refining tower is 0.01-0.4 MPa.
Further, the temperature of the complex preheater is 100-120 ℃, preferably 105-110 ℃. Here, the type of complex preheater may be shell-and-tube, fin, plate, etc., preferably a plate heat exchanger.
Further, the microchannel reaction cracker comprises a material conveying pipe connected with an external input material, a microchannel connected with the material conveying pipe, and a heating system for controlling the reaction temperature in the microchannel. The heating system can adopt a conduction oil heating circulation system.
Further, the microchannel reactor cracker used may be commercially available in the art from the manufacturer of "Shenshi energy saving technology Co., ltd., model SS-00820 WRC-H-P-6-A".
Furthermore, the shape of the micro-reaction channel is heart-shaped, umbrella-shaped, zigzag-shaped, flower-shaped or omega-shaped.
Further, the equivalent inner diameter of the micro-reaction channel is 0.5-2mm.
Further, the complexing agent used in the boron trifluoride complex may be an ether, specifically anisole, methyl ether or diethyl ether, etc.
The second technical scheme of the invention provides a cracking method of boron trifluoride complex, which is implemented by adopting the cracking device, and comprises the following steps:
and delivering the boron trifluoride complex from a boron trifluoride complex storage tank, preheating a meridian complex preheater, delivering the preheated boron trifluoride complex to a microchannel reaction cracker, delivering the obtained cracked product to a product separator for gas-liquid separation, returning the gas-phase product to the bottom of an exchange tower, delivering the liquid-phase product to a complexing agent refining tower for refining, and delivering the refined liquid-phase product.
Furthermore, the boron trifluoride complex can be subjected to a cracking reaction in a microchannel reaction cracker through one stage or a plurality of stages connected in series, and the microchannel reaction cracker is exemplified by the two stages:
pumping the boron trifluoride complex to a preheating heat exchanger, heating the boron trifluoride complex to 100-120 ℃, then entering a primary micro-channel reaction cracker, controlling the temperature of the primary cracking reactor to 120-150 ℃, conveying the obtained primary product to a primary gas-liquid separation tank, returning the high-purity boron trifluoride gas phase obtained at the top of the gas-liquid separation tank to the bottom of an exchange tower for chemical exchange reaction, conveying the liquid phase obtained at the bottom of the gas-liquid separation tank to a secondary micro-channel reaction cracker through a conveying pump, controlling the temperature of the secondary cracking reactor to 150-180 ℃, conveying the obtained product to a secondary gas-liquid separation tank, returning the high-purity boron trifluoride gas phase obtained at the top of the gas-liquid separation tank to the bottom of the exchange tower for chemical exchange reaction, and conveying the liquid phase obtained at the bottom of the secondary gas-liquid separation tank to a complexing agent refining tower through a conveying pump to obtain the high-purity complexing agent. The invention solves the problems of difficult control of the temperature, incomplete pyrolysis, more byproducts, easy corrosion, easy coking and blocking and the like of the existing pyrolysis tower, and can realize the accurate and controllable reaction temperature, less byproducts, no generation of coking substances, small occupied area of the device, low energy consumption and high efficiency and safety of production. The feeding flow of the boron trifluoride complex is controlled by a mass flowmeter, the boron trifluoride complex enters a preheating heat exchanger after passing through a delivery pump, and the heat exchanger system consists of a heat conduction oil heating circulation system, a heat conduction oil delivery pipe, a material delivery pipe and a heat exchange channel, wherein the heating medium heat conduction oil heating circulation system is controlled in a setting way.
Boron trifluoride complex contains coordination bonds, and two electrons shared between two atoms forming the bond are provided by an organic substance, boron trifluoride is used as a receptor substance, and the stability of the complex is determined, but at a certain temperature, the coordination bonds are easily broken, and then the complex is cracked into two substances. The invention adopts the micro-channel reactor to realize rapid temperature rise and intensified cracking reaction, and simultaneously has even heat transfer, accurate temperature and pressure control and reduced side reaction; the cracking reaction generates gas, the gas can be removed rapidly through the micro-channel reactor, the safety risk caused by overlarge air pressure of the traditional kettle-type reactor is reduced, the reaction can be promoted, and the cracking rate is improved; the microchannel reactor has no amplification effect and can reduce the research and development cost.
Compared with the prior art, the invention has the advantages of accurate and controllable reaction temperature, accurate and controllable complex cracking degree, less byproducts, no generation of coking substances, small occupied area of the device, low energy consumption, high efficiency and safety in production and the like, thereby ensuring stable production, long-time operation and improving the yield of the device.
Drawings
FIG. 1 is a schematic flow chart of embodiment 1 of the present invention;
FIG. 2 is a schematic flow chart of embodiment 2 of the present invention;
the figure indicates:
v1-boron trifluoride complex pot; p1-complex delivery pump; r1-a preheating heat exchanger heating system; r2-complex preheat heat exchanger; r3-a primary heating system; w1-a primary microchannel reaction cracker; v2-boron trifluoride gas buffer tank; v3-a primary gas-liquid separator; p2-a first-stage gas-liquid separator conveying pump; r4-a secondary heating system; w2-second-stage micro-channel reaction cracker; v4-second-stage gas-liquid separator; p3-second-stage gas-liquid separator transfer pump; t1-complexing agent refining tower; r5-complexing agent refining tower reboiler; r6-complexing agent refining tower condenser.
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 given, but the protection scope of the present invention is not limited to the following examples.
In the following examples, unless otherwise specified, materials or functional components are indicated as being conventional commercially available materials in the art or conventional components or conventional structures employed to achieve the corresponding functions.
Example 1:
controlling the delivery of boron trifluoride anisole complex from boron trifluoride complex tank V1 with metering pump (i.e. complex delivery pump P1), controlling flow to 2L/h, feeding the material at 25deg.C into complex preheating heat exchanger R2, and heating the pre-heater with stainless steel plate type heat exchanger with heat exchange area of 0.08m 2 Heating to 100deg.C, then introducing into a microchannel reaction cracker (designed as one stage in this embodiment, namely, a first stage microchannel reaction cracker W1), the microchannel reactor is made of silicon carbide, the flow channel is heart-shaped, and is formed by splicing 8 plates 100mm x 100mm, the temperature is controlled by a microchannel reaction cracker heating system (namely, a first stage heating system R3 and a conventional heat conduction oil heating circulation system), the temperature of the cracker is controlled to be 175 ℃, the pressure is 0.4MPa.A, the obtained product is conveyed to a gas-liquid separation tank (namely, a first stage gas-liquid separator V3), the pressure of the gas-liquid separation tank is 0.3MPa.A, the high-purity boron trifluoride gas phase obtained at the top of the gas-liquid separation tank is returned to a boron trifluoride gas buffer tank V2, the pressure of the buffer tank is 0.2MPa.A, the liquid phase obtained at the bottom of the gas-liquid separation tank is pumped into a complexing agent refining tower T1 by a first stage gas-liquid separator conveying pump P2, and the complexing agent is arranged at the top of the refining tower T1And a refining tower condenser R6, wherein a complexing agent refining tower reboiler R5 is arranged at the tower bottom, so as to obtain the high-purity anisole reagent.
The cracking rate of the microchannel reaction cracker was 98.6% by liquid phase sampling analysis of the bottom of the gas-liquid separation tank.
Example 2:
controlling the flow rate of the boron trifluoride anisole complex to be 2L/h by using a metering pump, pumping the boron trifluoride anisole complex to a preheating heat exchanger at the temperature of 25 ℃, wherein the preheating heat exchanger is a stainless steel plate type heat exchanger, and the heat exchange area is 0.08m 2 Heating to 100 ℃, then entering a primary micro-channel reaction cracker W1, wherein the micro-channel reactor is made of silicon carbide, the shape of a runner is heart-shaped, the micro-channel reactor is formed by splicing 6 plates with the thickness of 100mm and the thickness of 100mm, the temperature of the primary cracking reactor is controlled by a primary heating system R3, the temperature of the primary cracking reactor is controlled to 140 ℃, the pressure is 0.4MPa, the obtained primary product is conveyed to a primary gas-liquid separation tank (namely a primary gas-liquid separator V3), the pressure of the gas-liquid separation tank is 0.3MPa, the high-purity boron trifluoride gas phase obtained at the top of the primary gas-liquid separation tank is returned to a boron trifluoride gas buffer tank V2, and the pressure of the buffer tank is 0.2MPa.
The liquid phase obtained at the bottom of the primary gas-liquid separation tank enters a secondary micro-channel reaction cracker W2 through a primary gas-liquid separator conveying pump P2, the micro-channel reactor is made of silicon carbide, the flow channel is heart-shaped and is formed by splicing 4 plates 100mm in length and 100mm in length, the temperature is controlled by a secondary heating system R4 (a conventional conduction oil heating circulation system can also be adopted), the temperature of the secondary cracking reactor is controlled to be 170 ℃, the pressure of the secondary cracking reactor is 0.35MPa, the obtained product is conveyed to a secondary gas-liquid separation tank (namely a secondary gas-liquid separator V4), the pressure of the gas-liquid separation tank is 0.3MPaA, the high-purity boron trifluoride gas phase obtained at the top of the gas-liquid separation tank is returned to a boron trifluoride gas buffer tank V2 for chemical exchange reaction, the liquid phase obtained at the bottom of the secondary gas-liquid separation tank enters a complexing agent refining tower T1 through a secondary gas-liquid separator conveying pump P3, a complexing agent refining tower condenser R6 is arranged at the top of the complexing agent refining tower T1, and a complexing agent reboiler R5 is arranged at the tower top to obtain high-anisole reagent.
By sampling and analyzing different nodes, the cracking rate of the primary micro-channel reaction cracker is 96%, and the total cracking rate after passing through the secondary micro-channel reaction cracker is 99.68%.
Comparative example 1:
the boron trifluoride complex is cracked in a cracking tower, the cracking tower consists of a tower top condenser, a tower body and a tower kettle, the diameter of the cracking tower is 50mm, the tower height is 1.5m, the material is stainless steel, the flow of the boron trifluoride anisole complex is controlled to be 2L/h by a metering pump, the boron trifluoride anisole complex is fed from the top of the cracking tower, the pressure of the tower top is 0.25MPaA, the cracking temperature is controlled to be about 190 ℃, and the cracked product of the tower kettle is conveyed to an anisole refining tower. The cracking rate was 95.3% by sampling analysis of the bottoms of the cracking column.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (1)
1. The cracking method of the boron trifluoride complex is characterized by adopting a cracking device, wherein the cracking device comprises a boron trifluoride complex storage tank, a complex preheater, a microchannel reaction cracker and a product separator which are connected in sequence;
the microchannel reaction cracker is provided with two stages, wherein the temperature of the first stage microchannel reaction cracker is 120-150 ℃ and the pressure is 0.3-0.6 mpa.A; the temperature of the second stage micro-channel reaction cracker is 150-180 ℃ and the pressure is 0.15-0.4 MPa.
A product separator is connected behind each stage of microchannel reaction cracker, the top gas phase outlet of the product separator is connected back to the bottom of the exchange tower, and the bottom liquid phase outlet is also connected with the next stage of microchannel reaction cracker or complexing agent refining tower;
the pressure of a product separator positioned behind the first stage microchannel reaction cracker is controlled to be 0.15-4 mpa.A;
the pressure of a product separator positioned behind the second-stage microchannel reaction cracker is controlled to be 0.2-0.5 MPa.A;
the micro-channel reaction cracker comprises a material conveying pipe connected with an external input material, a micro-reaction channel connected with the material conveying pipe, and a heating system for controlling the reaction temperature in the micro-reaction channel;
the shape of the micro-reaction channel is heart-shaped, umbrella-shaped, zigzag-shaped, flower-shaped or omega-shaped;
the equivalent inner diameter of the micro-reaction channel is 0.5-2mm;
the cracking method comprises the following steps:
delivering the boron trifluoride complex from a boron trifluoride complex storage tank, preheating a meridian complex preheater, delivering the preheated boron trifluoride complex to a microchannel reaction cracker, delivering the obtained cracked product to a product separator for gas-liquid separation, returning the gas-phase product to the bottom of an exchange tower, delivering the liquid-phase product to a complexing agent refining tower for refining, and delivering the refined liquid-phase product;
the temperature of the complex preheater is 100-120 ℃;
the complexing agent used in the boron trifluoride complex is anisole, methyl ether or diethyl ether.
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| CN103007853A (en) * | 2011-09-23 | 2013-04-03 | 中国科学院大连化学物理研究所 | Silicon carbide micro-channel reactor and application thereof in preparing low carbon olefin from hydrocarbons cracking |
| CN202898052U (en) * | 2012-07-06 | 2013-04-24 | 天津大学 | Production device of <11>boron trifluoride electronic specific gas |
| CN104190256A (en) * | 2014-08-16 | 2014-12-10 | 刘小秦 | Construction method based on technology for producing boron isotope by anisole-boron trifluoride |
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