CN111215013A - Stirring reaction device suitable for strong corrosive gas participates in reaction - Google Patents
Stirring reaction device suitable for strong corrosive gas participates in reaction Download PDFInfo
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- CN111215013A CN111215013A CN201811418312.9A CN201811418312A CN111215013A CN 111215013 A CN111215013 A CN 111215013A CN 201811418312 A CN201811418312 A CN 201811418312A CN 111215013 A CN111215013 A CN 111215013A
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- corrosive gas
- strong corrosive
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- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
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- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0073—Sealings
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- 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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
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Abstract
The invention relates to a stirring reaction device suitable for strong corrosive gas to participate in reaction, which comprises a reactor, a stirrer, a strong corrosive gas inlet guide pipe and a strong corrosive gas outlet guide pipe, wherein isolation liquid is arranged in the reactor; the driving shaft of the stirrer extends into the reactor from the bottom of the reactor, the strong corrosive gas inlet guide pipe extends into the reactor, the gas outlet of the strong corrosive gas inlet guide pipe is positioned below the liquid level of the isolation liquid, and the gas outlet of the strong corrosive gas outlet guide pipe is positioned above the liquid level of the isolation liquid. The stirrer is arranged at the bottom of the reactor, and the strong corrosive gas is directly led into the isolating liquid, so that the strong corrosive gas can be prevented from directly contacting with the sealing element, and the sealing element is effectively protected.
Description
Technical Field
The invention relates to the field of stirring reaction devices, in particular to a stirring reaction device suitable for strong corrosive gas to participate in reaction.
Background
With the continuous research on the utilization of fluorine gas at home and abroad, fluorine gas fluorination is applied to various fields, such as surface fluorination of rubber, fluorination of fluorinated fine chemicals, fluorination end-capping technology of perfluorinated compounds, and the like. However, the fluorine gas is very specific, so that the requirement on the reaction system is very high, the oil must be removed and the degreasing is needed, and the damage to the reactor can be caused when the treatment is not complete. The sealing system of the reactor is more demanding, the sealing ring of the conventional stirrer can react with fluorine gas when encountering fluorine gas, and some patents mention that the dynamic sealing ring using tetrafluoro is damaged as in the case of slightly higher purity of fluorine gas. Further, in most of the systems for fluorinating fluorine gas, since stirring is not used due to technical problems, the fluorination reaction is not efficient, and is incomplete.
Disclosure of Invention
The invention aims to provide a stirring reaction device suitable for strong corrosive gas to participate in reaction, which comprises a reactor, a strong corrosive gas inlet guide pipe, a strong corrosive gas outlet, an isolation liquid and a stirrer for stirring the isolation liquid;
the driving shaft of the stirrer extends into the reactor from the bottom of the reactor, a sealing element between the driving shaft and the reactor is positioned in the isolating liquid, the strong corrosive gas inlet guide pipe extends below the liquid level of the isolating liquid, the gas outlet of the strong corrosive gas inlet guide pipe is not contacted with the sealing element, and the gas outlet of the strong corrosive gas is positioned above the liquid level of the isolating liquid; the spacer fluid does not react with the highly corrosive gas.
The stirring device is arranged at the bottom of the reactor, particularly the driving shaft extends into the reactor from the bottom of the reactor, strong corrosive gas can be isolated from the contact with the sealing element of the driving shaft of the stirrer through the isolating liquid, the damage of the strong corrosive gas to the sealing element is prevented, the service life of the stirring reaction device can be prolonged, the reaction rate is improved, and the operation safety is improved.
Preferably, the highly corrosive gas inlet conduit is disposed along an inner wall of the reactor. The air inlet guide pipe is arranged along the inner wall, so that the air inlet guide pipe can be prevented from influencing the rotation of the stirring blade.
Further preferably, the strong corrosive gas inlet conduit is arranged from the inner wall of the reactor to the bottom of the reactor, and the opening of the strong corrosive gas inlet conduit is upward. The opening upwards sets up, reducible strong corrosive gas with the sealing member contacts, weakens the corrosive action to the sealing member.
Still further preferably, the strong corrosive gas inlet conduit is arranged along the inner wall to the bottom of the reactor, and the opening is arranged upwards at the projection position of the stirring blade. The opening is located the position of stirring vane projection, can strengthen the stirring effect of agitator to strong corrosive gas.
Preferably, the strongly corrosive gas is fluorine gas.
Preferably, the spacer fluid is a perfluoropolyether oil.
Preferably, one or more temperature sensors are arranged in the reactor, temperature control devices are arranged on the periphery of the outer wall of the reactor, and the temperature sensors are connected with the control device and transmit temperature signals to the control device.
Through setting up temperature sensor, can realize the control to the temperature, and then through the temperature regulating device temperature in adjusting the reactor, make each temperature comparison of reaction system balanced, avoid the local high temperature that the reaction acutely caused or local excessive fluorination, can make the reaction go on steadily.
Preferably, the temperature control device is a heat-insulating jacket arranged on the outer wall of the reactor.
Cooling medium and heating medium can be introduced into the moisture-preserving jacket, the required fluorination temperature is different due to different characteristics of fluorinated substances, the temperature distribution range of the reaction is extremely large, the temperature of the jacket is required to be between 110 ℃ below zero and 300 ℃, and the material of the jacket is stainless steel meeting the conditions.
Preferably, the sealing member at the junction of the driving shaft and the reactor is made of an acid-resistant material. The invention inevitably generates strong acid substances in the reaction process, and the service life of the sealing element can be prolonged by selecting acid-resistant materials.
Further preferably, such a materialHF corrosion resistance, HCL and H resistance2SO4And (6) corrosion.
Preferably, the seal is made of monel or hastelloy.
Preferably, the reactor is made of an acid-resistant material or its inner surface is coated with an acid-resistant coating.
Further preferably, the material is resistant to HF corrosion, as well as to HCL and H2SO4And (6) corrosion.
Further preferably, the reactor is made of stainless steel, nickel alloy or other materials.
The reactor of the invention is also provided with a material inlet and a material outlet.
The invention has the following beneficial effects:
1) the stirrer is arranged at the bottom of the reactor, and the strong corrosive gas is directly led into the isolating liquid, so that the strong corrosive gas can be prevented from directly contacting with the sealing element, and the sealing element is effectively protected.
2) The reactor has special material requirements, and can be widely used for stirring in corrosive environment reaction systems with harsh conditions.
The invention has wider usability, and especially has very important significance for solving the stirring requirement of strong corrosive gas.
Drawings
FIG. 1 shows a stirred reactor system according to example 1
In the figure: 1 is a reactor; 2 is a stirrer; 3 is a driving shaft; 4 is a strong corrosive gas inlet conduit; 5 is a strong corrosive gas outlet; 6 is a heat preservation jacket; 7 is a stirring blade; and 8 is a sealing member.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The embodiment relates to a stirring reaction device suitable for a strong corrosive gas to participate in a reaction, and as shown in fig. 1, the reaction device comprises a reactor 1, a strong corrosive gas inlet conduit 4, a strong corrosive gas outlet 5, a spacer fluid and a stirrer 7 for stirring the spacer fluid;
a driving shaft 3 of the stirrer extends into the reactor 1 from the bottom of the reactor 1, a sealing element 8 between the driving shaft 3 and the reactor 1 is positioned in the isolating liquid, the strong corrosive gas inlet conduit 4 extends into the position below the liquid level of the isolating liquid, a gas outlet of the strong corrosive gas inlet conduit is not contacted with the sealing element 8, and a gas outlet 5 of the strong corrosive gas is positioned above the liquid level of the isolating liquid; the spacer fluid does not react with the highly corrosive gas.
Example 2
The present embodiment relates to a stirring reactor suitable for a strong corrosive gas to participate in a reaction, and is different from embodiment 1 in that a gas inlet conduit 4 for the strong corrosive gas is arranged along the inner wall to the bottom of the reactor 1, and an opening is arranged upward at the projection position of a stirring blade of the stirrer. The reactor is characterized in that one or more temperature sensors are arranged inside the reactor, a heat-preservation jacket 6 is arranged on the periphery of the outer wall of the reactor, and the temperature sensors are connected with the heat-preservation jacket 6 and transmit temperature signals to the heat-preservation jacket.
Example 3
Compared with the embodiment 1, the stirring reaction device is characterized in that a sealing element at the joint of the driving shaft and the reactor is made of Monel alloy or Hastelloy, the reactor is made of stainless steel or nickel alloy and the like, and the reactor is further provided with a material inlet and a material outlet.
Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A stirring reaction device suitable for strong corrosive gas to participate in reaction is characterized by comprising a reactor, a strong corrosive gas inlet conduit, a strong corrosive gas outlet, an isolation liquid and a stirrer for stirring the isolation liquid;
the driving shaft of the stirrer extends into the reactor from the bottom of the reactor, a sealing element between the driving shaft and the reactor is positioned in the isolating liquid, the strong corrosive gas inlet guide pipe extends below the liquid level of the isolating liquid, the gas outlet of the strong corrosive gas inlet guide pipe is not contacted with the sealing element, and the gas outlet of the strong corrosive gas is positioned above the liquid level of the isolating liquid; the spacer fluid does not react with the highly corrosive gas.
2. The reactor apparatus of claim 1, wherein the highly corrosive gas feed conduit is disposed along an inner wall of the reactor.
3. The reactor according to claim 1 or 2, wherein the strong corrosive gas inlet conduit is arranged from the inner wall of the reactor to the bottom of the reactor and is opened upwards; preferably, the strong corrosive gas inlet conduit is arranged from the inner wall to the bottom of the reactor, and the opening is positioned at the projection position of the stirring blade of the stirrer and is arranged upwards.
4. The reaction apparatus according to any one of claims 1 to 3, wherein the strongly corrosive gas is fluorine gas; and/or the spacer fluid is perfluoropolyether oil.
5. The reaction device according to any one of claims 1 to 4, wherein one or more temperature sensors are arranged inside the reactor, a temperature control device is arranged around the outer wall of the reactor, and the temperature sensors are connected with the control device and transmit temperature signals to the control device.
6. The reactor apparatus of claim 5, wherein the temperature control device is a thermal jacket disposed on the outer wall of the reactor.
7. The reactor apparatus as claimed in any one of claims 1 to 6, wherein the sealing member at the junction of the driving shaft and the reactor is made of an acid-resistant material.
8. The reactor device of claim 7, wherein the seal is made of monel or hastelloy.
9. The reaction apparatus as claimed in any one of claims 1 to 8, wherein the reactor is prepared from an acid-resistant material or has an inner surface coated with an acid-resistant coating.
10. The reaction device according to any one of claims 1 to 9, wherein the reactor is further provided with a material inlet and/or a material outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418312.9A CN111215013A (en) | 2018-11-26 | 2018-11-26 | Stirring reaction device suitable for strong corrosive gas participates in reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418312.9A CN111215013A (en) | 2018-11-26 | 2018-11-26 | Stirring reaction device suitable for strong corrosive gas participates in reaction |
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| Publication Number | Publication Date |
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| CN111215013A true CN111215013A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811418312.9A Pending CN111215013A (en) | 2018-11-26 | 2018-11-26 | Stirring reaction device suitable for strong corrosive gas participates in reaction |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19836565A1 (en) * | 1998-08-12 | 2000-02-17 | Linde Ag | Process for mixing liquid foodstuffs by injecting gas into the space below the mixing blade so that it can rise as bubbles through the product |
| CN205570296U (en) * | 2016-03-08 | 2016-09-14 | 江苏梅兰化工有限公司 | 5 fluctyosine fluorination reactors of area stirring |
| CN106632771A (en) * | 2015-07-13 | 2017-05-10 | 中昊晨光化工研究院有限公司 | Device used for treating unstable terminal group of fluorine-containing polymer and a process for treating same |
| CN107029616A (en) * | 2017-03-20 | 2017-08-11 | 无锡职业技术学院 | A kind of paint mixer |
| CN207126485U (en) * | 2017-07-08 | 2018-03-23 | 浙江百辰食品科技有限公司 | A kind of chemical liquid proportioner |
| CN108499428A (en) * | 2018-04-17 | 2018-09-07 | 甘肃众创动力电子科技有限公司 | A kind of slurry for water-based paint material dispersion tank |
-
2018
- 2018-11-26 CN CN201811418312.9A patent/CN111215013A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19836565A1 (en) * | 1998-08-12 | 2000-02-17 | Linde Ag | Process for mixing liquid foodstuffs by injecting gas into the space below the mixing blade so that it can rise as bubbles through the product |
| CN106632771A (en) * | 2015-07-13 | 2017-05-10 | 中昊晨光化工研究院有限公司 | Device used for treating unstable terminal group of fluorine-containing polymer and a process for treating same |
| CN205570296U (en) * | 2016-03-08 | 2016-09-14 | 江苏梅兰化工有限公司 | 5 fluctyosine fluorination reactors of area stirring |
| CN107029616A (en) * | 2017-03-20 | 2017-08-11 | 无锡职业技术学院 | A kind of paint mixer |
| CN207126485U (en) * | 2017-07-08 | 2018-03-23 | 浙江百辰食品科技有限公司 | A kind of chemical liquid proportioner |
| CN108499428A (en) * | 2018-04-17 | 2018-09-07 | 甘肃众创动力电子科技有限公司 | A kind of slurry for water-based paint material dispersion tank |
Non-Patent Citations (1)
| Title |
|---|
| 上海燎原化工化工厂编: "《国外聚氯乙烯树脂（第3辑）》", 31 July 1973, 上海科学技术情报研究所 * |
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