CN113171732B - Dangerous liquid feeding system and method - Google Patents
Dangerous liquid feeding system and method Download PDFInfo
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- CN113171732B CN113171732B CN202110303505.5A CN202110303505A CN113171732B CN 113171732 B CN113171732 B CN 113171732B CN 202110303505 A CN202110303505 A CN 202110303505A CN 113171732 B CN113171732 B CN 113171732B
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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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
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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
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/007—Feed or outlet devices as such, e.g. feeding tubes provided with moving parts
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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
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a dangerous liquid feeding system and a method, wherein the system comprises: the device comprises a delivery pump, a high-level tank, a reaction kettle and a raw material barrel group; one end of each raw material barrel group is connected in parallel through a balance pipe and then communicated with the high-level tank, the other end of each raw material barrel group is communicated with the input end of the conveying pump, the output end of the conveying pump is respectively communicated with the high-level tank and the reaction kettle through a feeding pipe, and the high-level tank and the reaction kettle are communicated through the balance pipe; wherein, the former storage bucket of every group includes: more than two raw material barrels communicated through a feeding valve bank; a pipeline of a feeding valve row of each raw material barrel group leading to a conveying pump is provided with a switch valve, a feeding pipe of the conveying pump leading to a high-level tank is provided with a switch valve V-3, and a feeding pipe of the conveying pump leading to a reaction kettle is provided with a switch valve V-4; the method has the advantages of closed whole process, high safety, environmental friendliness, simple and quick operation and capability of avoiding the phenomenon of leakage, overflow and drip in the feeding process of chemical production.
Description
Technical Field
The invention relates to the technical field of dangerous liquid automatic feeding, in particular to a dangerous liquid feeding system and a dangerous liquid feeding method.
Background
The trifluoromethanesulfonic acid silyl derivative is an important medical intermediate, and mainly comprises trimethylsilyl trifluoromethanesulfonate, tert-butyldimethylsilyl trifluoromethanesulfonate, triisopropylsilyl trifluoromethanesulfonate, triethylsilyl trifluoromethanesulfonate and the like. Among them, trimethylsilyl trifluoromethanesulfonate is most widely used.
Trimethylsilyl trifluoromethanesulfonate, abbreviated as TMSOTf in English, having the formula CF3SO3Si(CH3)3Is a silylation reagent widely used in organic synthesis, mainly used for: the protective functional group participates in the reaction of carbon-carbon bond formation and carbon chain growth, is commonly used for conversion and protection of functional groups such as hydroxyl, carboxyl, carbonyl and the like, participates in the reaction of carbon-carbon bond formation and carbon chain growth, can be used as a Lewis acid catalyst and a cation initiator, is an important medical intermediate and an organic synthesis structural unit, is used as a catalyst in certain reactions, and has wide market application prospect.
In the prior art, during the preparation process of trimethylsilyl trifluoromethanesulfonate, the raw materials are usually directly conveyed through a conveying pump, the raw materials cannot be guaranteed to be in a closed state in the feeding process, the phenomenon of leakage and leakage in the chemical production feeding process is easy to occur, the chemical production treatment is not facilitated, and certain potential safety hazards exist.
Disclosure of Invention
In view of this, the invention provides a hazardous liquid feeding system and a method thereof, which can ensure that the hazardous liquid is in a closed state in the feeding process, and avoid the phenomena of leakage, overflow and drip in the feeding process of chemical production.
The technical scheme of the invention is as follows: a hazardous liquid feeding system, comprising: the device comprises a delivery pump, a high-level tank, a reaction kettle and a raw material barrel group; one end of each raw material barrel group is connected in parallel through a balance pipe and then communicated with the high-level tank, the other end of each raw material barrel group is communicated with the input end of the conveying pump, the output end of the conveying pump is respectively communicated with the high-level tank and the reaction kettle through a feeding pipe, and the high-level tank and the reaction kettle are communicated through the balance pipe; wherein, the former storage bucket of every group includes: two above raw material barrel through the material loading valve row intercommunication, every material loading valve row includes: more than two groups of gas-liquid pipe assemblies which are connected in parallel on the same pipeline, wherein each group of gas-liquid pipe assembly corresponds to a raw material barrel and consists of a gas-phase pipe and a liquid-phase pipe, switch valves are arranged on each gas-phase pipe and each liquid-phase pipe, the gas-phase pipe is inserted into a set position at the top end in the raw material barrel, and the liquid-phase pipe is inserted into the bottom in the raw material barrel;
a pipeline of the feeding valve row of each raw material barrel group leading to the conveying pump is provided with a switch valve, a feeding pipe of the conveying pump leading to the high-level tank is provided with a switch valve V-3, and a feeding pipe of the conveying pump leading to the reaction kettle is provided with a switch valve V-4.
Preferably, the product of the hazardous liquid preparation is trimethylsilyl trifluoromethanesulfonate.
Preferably, the liquid outlet end of the high-level tank is communicated with the feeding pipe of the reaction kettle through a liquid outlet pipe, and the liquid outlet pipe of the high-level tank is provided with a switch valve V-5.
Preferably, a nitrogen pipeline for injecting nitrogen and a vacuum pipeline for vacuumizing are arranged on the high-level tank, a switch valve V-6 is arranged on the nitrogen pipeline, and a switch valve V-7 is arranged on the vacuum pipeline.
Preferably, a switch valve is arranged on a pipeline between the gas phase pipe and the liquid phase pipe at one end of each feeding valve bank far away from the conveying pump.
Preferably, a mass flow meter is arranged on the feeding pipe.
Preferably, all the on-off valves are automatic valves.
A hazardous liquid feeding method, comprising the following steps:
s1, starting a feeding system;
s2, opening a switch valve and switch valves V-3 and V-4 at two ends of each feeding valve row, wherein the double valves connected above each feeding valve row and the corresponding raw material barrel are in a closed state, the alternate actions of the switch valves V-6 and V-7 are interlocked with a set value of a pressure gauge on the high-level tank, the reaction kettle, the balance pipe and the feeding pipe are replaced, and air is exhausted and the high-level tank is in a nitrogen environment;
s3, when preparing to feed, closing a feed valve to discharge a switch valve arranged on a pipeline between a gas phase pipe and a liquid phase pipe at one end far away from the delivery pump;
s4, when a raw material is fed, the double valves connected above each raw material barrel corresponding to the raw material are all in an open state, the switch valve arranged on the pipeline leading to the delivery pump of the feeding valve row corresponding to the raw material and the switch valve on the corresponding feeding pipe are opened, the switch valves arranged on the pipelines leading to the delivery pump of the feeding valve rows corresponding to other raw materials and the switch valves on the corresponding feeding pipes are closed, the delivery pump is started to deliver the raw material to the high-level tank or the reaction kettle, and when the set feeding weight is reached, the switch valves opened in the step are closed, and the delivery pump is stopped;
and S5, repeating S4 to feed different raw materials, and adding more than two raw materials into corresponding equipment in a sealed manner.
Has the advantages that:
1. the feeding system provided by the invention can hermetically add more than two raw materials into corresponding equipment, is closed in the whole process, high in safety, environment-friendly, simple and quick to operate, and can prevent the phenomenon of 'running, falling, dripping and leaking' in the feeding process of chemical production, so that the industrial production of chemical products such as trimethylsilyl trifluoromethanesulfonate can be well guided.
2. The feeding method provided by the invention has the advantages of closed whole process, high safety, environmental friendliness, simple and quick operation and capability of avoiding the phenomenon of leakage, overflow and drip in the feeding process of chemical production, thereby well guiding the industrial production of chemical products such as trimethylsilyl trifluoromethanesulfonate and the like.
Drawings
Fig. 1 is a schematic view of an automatic feeding system according to the present invention.
Wherein, the method comprises the steps of 1-a delivery pump, 2-a mass flow meter, 3-a high-level tank and 4-a reaction kettle.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
Example 1:
this embodiment provides a dangerous liquid feeding system, can guarantee that material loading in-process dangerous liquid is under airtight state, avoids the "running and falling hourglass" phenomenon of chemical production material loading in-process.
As shown in fig. 1, the feeding system includes: more than two raw material A heavy barrels, more than two raw material B heavy barrels, a delivery pump 1, a high-level tank 3 and a reaction kettle 4.
More than two raw material A heavy barrels are communicated through a group of feeding valve rows to form a raw material A heavy barrel group; more than two raw material B heavy barrels are communicated through a group of feeding valve rows to form a raw material B heavy barrel group; the two groups of feeding valve rows are communicated through a balance pipe, the inlet ends of the feeding valve rows of the raw material A heavy barrel group are communicated with the upper end of the high-level tank 3 through the balance pipe, the upper end of the reaction kettle 4 is communicated with the upper end of the high-level tank 3 through the balance pipe, the outlet ends of the two feeding valve rows are communicated with the input end of the delivery pump 1, and the output end of the delivery pump 1 is respectively communicated with the high-level tank 3 and the reaction kettle 4 through the feeding pipe; all the balance pipes are used for balancing pressure, so that negative pressure is prevented from being formed in each raw material barrel in the feeding process;
in this embodiment, each of the feeding valve banks includes: the gas-liquid pipe assembly is characterized by comprising more than two groups of gas-liquid pipe assemblies which are connected in parallel on the same pipeline, wherein each group of gas-liquid pipe assemblies corresponds to a raw material barrel (a raw material A heavy barrel or a raw material B heavy barrel) and consists of a gas-phase pipe and a liquid-phase pipe, switch valves are arranged on each gas-phase pipe and each liquid-phase pipe, the gas-phase pipe is inserted into a set position at the top end in the raw material barrel, and the liquid-phase pipe is inserted into the bottom in the raw material barrel, so that the liquid in each raw material barrel can be completely extracted;
in the embodiment, a pipeline leading to a conveying pump 1 (a feeding valve row outlet end) of a feeding valve row of a raw material A heavy barrel group is provided with a switch valve V-1, a pipeline leading to the conveying pump 1 (a feeding valve row outlet end) of the feeding valve row of a raw material B heavy barrel group is provided with a switch valve V-2, a feeding pipe leading to a high-level tank 3 of the conveying pump 1 is provided with a switch valve V-3, and a feeding pipe leading to a reaction kettle 4 of the conveying pump 1 is provided with a switch valve V-4; the liquid outlet end of the high-level tank 3 is communicated with a feeding pipe leading to the reaction kettle 4 through a liquid outlet pipe by a conveying pump 1, and the liquid outlet pipe of the high-level tank 3 is provided with a switch valve V-5 for adding the raw material A into the reaction kettle 4 in proper time by the high-level tank 3 so as to facilitate the mixing reaction of the raw material A and the raw material B; the high-level tank 3 is provided with a nitrogen pipeline for injecting nitrogen and a vacuum pipeline for vacuumizing, the nitrogen pipeline is provided with a switch valve V-6, and the vacuum pipeline is provided with a switch valve V-7.
In the embodiment, a switching valve V-8 is arranged on a pipeline between a gas phase pipe and a liquid phase pipe at one end (inlet end of a feeding valve bank) of the feeding valve bank of the raw material A heavy barrel group far away from the delivery pump 1; a switching valve V-9 is arranged on a pipeline between a gas phase pipe and a liquid phase pipe at one end (inlet end of the feeding valve bank) of the feeding valve bank of the raw material B heavy barrel group, which is far away from the delivery pump 1; when the pipeline is replaced, the switch valves V-8 and V-9 are opened, when the pipeline is loaded, the switch valves V-8 and V-9 are closed, and the conveying pump 1 pumps the raw materials A or B from the corresponding raw material barrels according to the sequence of being far away from the conveying pump 1 and being close to the conveying pump 1 (namely the sequence of the raw materials A from the raw material barrel A-4 to the raw material barrel A-1 or the sequence of the raw materials B from the raw material barrel B-4 to the raw material barrel B-1).
In this embodiment, the feeding pipe is provided with the mass flow meter 2, so that the conveying weights of different raw materials can be measured and fed back in time.
In the embodiment, all the switch valves adopt automatic valves, the interlocking effect of the switch valves in the corresponding feeding valve rows can be designed according to the feeding conditions of different raw materials, and the automatic interlocking among the switch valves V-1, V-2, V-3 and V-4, the delivery pump 1 and the mass flow meter 2 can be realized according to different states.
Example 2:
the embodiment provides a dangerous liquid feeding method, which uses the feeding system of embodiment 1, and comprises the following steps:
s1: starting a feeding system;
s2: opening switching valves V-1, V-2, V-3, V-4, V-8 and V-9, closing the double valves connected above the feeding valve row and each raw material A heavy barrel and each raw material B heavy barrel, interlocking the alternating actions of the switching valves V-6 and V-7 with the set value of a pressure gauge arranged on the high-level tank 3, replacing the high-level tank 3, the reaction kettle 4, the balance pipe, the feeding pipe and the like, and exhausting air and keeping in a nitrogen environment;
s3: when the raw material A is fed, closing the switch valves V-8 and V-9, enabling the double valves connected above the feeding valve row and each raw material A heavy bucket to be in an opening state, opening the switch valves V-1 and V-3, closing the switch valves V-2 and V-4, starting the conveying pump 1 to convey the raw material A to the high-level tank 3, closing the switch valves V-1 and V-3 when the count of the mass flow meter 2 reaches the set feeding weight, stopping the conveying pump 1, and closing the double valves connected above the feeding valve row and each raw material A heavy bucket;
s4: when the raw material B is fed, the double valves connected above the feeding valve row and each raw material B heavy barrel are in an open state, the switch valves V-2 and V-4 are opened, the conveying pump 1 is started to convey the raw material B to the reaction kettle 4, when the count of the mass flow meter 2 reaches the set feeding weight, the switch valves V-2 and V-4 are closed, the conveying pump 1 is stopped, and the double valves connected above the feeding valve row and the raw material B heavy barrels are closed, so that the two raw materials are hermetically added into corresponding equipment.
The feeding method has the advantages of closed whole process, high safety, environmental friendliness, simplicity and quickness in operation, can avoid the phenomenon of leakage and leakage in the feeding process of chemical production, and can well guide the industrial production of chemical products such as trimethylsilyl trifluoromethanesulfonate.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A method for feeding a hazardous liquid, characterized in that it uses a feeding system comprising: the device comprises a delivery pump (1), a high-level tank (3), a reaction kettle (4) and a raw material barrel group; one end of each raw material barrel group is connected in parallel through a balance pipe and then communicated with the high-level tank (3), the other end of each raw material barrel group is communicated with the input end of the conveying pump (1), the output end of the conveying pump (1) is respectively communicated with the high-level tank (3) and the reaction kettle (4) through a feeding pipe, and the high-level tank (3) and the reaction kettle (4) are communicated through the balance pipe; wherein, the former storage bucket of every group includes: two above raw material barrel through the material loading valve row intercommunication, every material loading valve row includes: more than two groups of gas-liquid pipe assemblies which are connected in parallel on the same pipeline, wherein each group of gas-liquid pipe assembly corresponds to a raw material barrel and consists of a gas-phase pipe and a liquid-phase pipe, switch valves are arranged on each gas-phase pipe and each liquid-phase pipe, the gas-phase pipe is inserted into a set position at the top end in the raw material barrel, and the liquid-phase pipe is inserted into the bottom in the raw material barrel;
a pipeline of a feeding valve row of each raw material barrel group leading to the conveying pump (1) is provided with a switch valve, a feeding pipe of the conveying pump (1) leading to the high-level tank (3) is provided with a switch valve V-3, and a feeding pipe of the conveying pump (1) leading to the reaction kettle (4) is provided with a switch valve V-4;
a nitrogen pipeline for injecting nitrogen and a vacuum pipeline for vacuumizing are arranged on the high-level tank (3), a switch valve V-6 is arranged on the nitrogen pipeline, a switch valve V-7 is arranged on the vacuum pipeline, and a switch valve is arranged on a pipeline between a gas phase pipe and a liquid phase pipe at one end of each feeding valve bank, which is far away from the conveying pump (1);
the feeding method comprises the following steps:
s1, starting a feeding system;
s2, opening a switch valve and switch valves V-3 and V-4 at two ends of each feeding valve row, wherein the double valves connected above each feeding valve row and the corresponding raw material barrel are in a closed state, the alternate actions of the switch valves V-6 and V-7 are interlocked with the set value of a pressure gauge on the high-level tank (3), the reaction kettle (4), the balance pipe and the feeding pipe are replaced, and air is exhausted and the high-level tank is in a nitrogen environment;
s3, when preparing to feed, closing a feed valve to discharge a switch valve arranged on a pipeline between a gas phase pipe and a liquid phase pipe at one end far away from the delivery pump (1);
s4, when a raw material is fed, the double valves connected above each raw material barrel corresponding to the raw material are all in an open state, the switch valve arranged on the pipeline leading to the conveying pump (1) of the feeding valve row corresponding to the raw material and the switch valve on the corresponding feeding pipe are opened, the switch valve arranged on the pipeline leading to the conveying pump (1) of the feeding valve row corresponding to other raw materials and the switch valve on the corresponding feeding pipe are closed, the conveying pump (1) is started to convey the raw material to the high-level tank (3) or the reaction kettle (4), when the set feeding weight is reached, the switch valve opened in the step is closed, and the conveying pump (1) is stopped;
and S5, repeating S4 to feed different raw materials, and adding more than two raw materials into corresponding equipment in a sealed manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110303505.5A CN113171732B (en) | 2021-03-22 | 2021-03-22 | Dangerous liquid feeding system and method |
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| CN202110303505.5A CN113171732B (en) | 2021-03-22 | 2021-03-22 | Dangerous liquid feeding system and method |
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| CN113171732B true CN113171732B (en) | 2022-05-17 |
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| CN115715965A (en) * | 2022-09-27 | 2023-02-28 | 中船(邯郸)派瑞特种气体股份有限公司 | Reaction device and method for preparing trimethylsilyl trifluoromethanesulfonate |
| CN116212750A (en) * | 2023-05-06 | 2023-06-06 | 河北环恒科技有限公司 | Automatic control system and method for batch dripping for polycarboxylate superplasticizer mother liquor production |
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