CN218981545U - Reaction device for hydrogenation reaction - Google Patents
Reaction device for hydrogenation reaction Download PDFInfo
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- CN218981545U CN218981545U CN202222906814.4U CN202222906814U CN218981545U CN 218981545 U CN218981545 U CN 218981545U CN 202222906814 U CN202222906814 U CN 202222906814U CN 218981545 U CN218981545 U CN 218981545U
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Abstract
The utility model relates to the technical field of chemical pharmaceutical equipment, and discloses a reaction device for hydrogenation reaction. The hydrogenation reaction kettle comprises a hydrogenation kettle body, a feeding mechanism, a discharging mechanism, a temperature control mechanism and a safety protection mechanism, wherein the feeding mechanism, the discharging mechanism, the temperature control mechanism and the safety protection mechanism are arranged on the hydrogenation kettle body, when the hydrogenation reaction kettle is used, reaction raw materials are put into the reaction kettle body through the feeding mechanism, hydrogenation chemical reaction occurs in the reaction kettle body, the temperature control mechanism is used for controlling the temperature of the reaction kettle body in the reaction process, so that the chemical reaction is in a required temperature condition, and the safety protection mechanism can take action when the chemical reaction in the reaction kettle body is in an abnormal dangerous state. During discharging, solid and liquid are discharged out of the reaction kettle body through a kettle bottom discharging pipe arranged at the bottom of the hydrogenation kettle body, hydrogen is discharged through a discharging pipeline arranged at the top of the hydrogenation kettle body, and the safety of hydrogen discharging is jointly guaranteed through flow control, fire-retarding setting and outlet water seal setting in hydrogen discharging. The utility model is particularly suitable for hydrogenation chemical reactions.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a reaction device for hydrogenation reaction.
Background
In the processes of bulk drugs and fine chemical production, hydrogenation reaction in a reaction kettle is often involved, in order to ensure the reaction rate, the hydrogenation kettle needs to be pressurized (the general pressure is more than 0.2 MPa), when the reaction is finished, the gas phase space at the upper part of the kettle is hydrogen, excessive hydrogen in the kettle needs to be discharged through a blow-down pipe after the hydrogenation reaction is finished, and the hydrogen content is detected after nitrogen replacement, so that no hydrogen in the kettle can be used for discharging liquid phase materials in the kettle for the next operation.
When the hydrogen is exhausted, the flow rate of the hydrogen is not more than 8m/s. If the hydrogen discharge flow rate exceeds the safe flow rate, safety accidents such as static electricity ignition and the like are liable to occur, so that the flow rate of a pipeline needs to be controlled in order to make the process intrinsically safe. The driving force of the hydrogen flow in the blow-down pipe is the pressure difference between the inside and the outside of the kettle, the static pressure energy is reduced and is mainly converted into two parts of energy, namely fluid kinetic energy and resistance loss, and in the actual chemical production, the resistance loss is difficult to calculate. Because the pipeline resistance cannot be determined, it is difficult to determine the starting point pressure required to empty the pipeline, and secure the safe flow rate.
Among the prior art, the chinese patent with the grant bulletin number CN203577757U discloses a hydrogenation reaction kettle hydrogen safety vent and solvent recovery system, the hydrogenation reaction kettle disclosed by the present utility model mainly comprises a hydrogenation reaction kettle, an exhaust pipeline, a liquid inlet pipeline, a condenser, a buffer tank and a flame retardant, and the gas discharged from the hydrogenation reaction kettle sequentially passes through the buffer tank, the condenser, the flame retardant and the corresponding pipeline which are arranged from bottom to top, and as the equipment and the pipeline have no dead angle, accumulation is not formed, and the safe discharge is sequentially achieved. However, the reaction kettle does not have the related measure for ensuring the safe discharge of hydrogen, and the equipment and the pipeline have no dead angle and have certain difficulty.
Therefore, in order to ensure the safety problem of hydrogen emission in hydrogenation reaction, a reaction device for hydrogenation reaction still needs to be provided, so as to meet the requirements of chemical production.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a reaction device for hydrogenation reaction. The reaction device disclosed by the utility model jointly ensures the safety of hydrogen evacuation through flow control, fire-retarding arrangement and outlet water seal arrangement of the evacuation pipeline.
The specific technical scheme of the utility model is as follows:
a reaction apparatus for hydrogenation reactions, comprising:
a hydrogenation kettle body;
the discharging mechanism comprises a discharging pipe arranged at the bottom of the hydrogenation kettle body and a discharging pipe arranged at the bottom of the hydrogenation kettle body;
the emptying pipeline is sequentially provided with a current limiting pore plate, an emptying pipe flowmeter, an emptying regulating valve and an emptying switch valve from the near end to the far end of the hydrogenation kettle body; the control system controls the opening degree of the emptying regulating valve and the opening and closing of the emptying switching valve according to the feedback information of the emptying flow meter;
the reaction kettle further comprises a feeding mechanism, a temperature control mechanism and a safety protection mechanism which are arranged on the hydrogenation kettle body.
In the hydrogenation reaction, the reaction raw materials generally include solid-phase raw materials, liquid-phase raw materials and hydrogen. The reaction raw materials are put into the reaction kettle body through the feeding mechanism, the hydrogenation chemical reaction is carried out in the reaction kettle body, and in the reaction process, the temperature control mechanism is used for controlling the temperature of the reaction kettle body, so that the chemical reaction is in a required temperature condition, and the safety protection mechanism can take action when the chemical reaction in the reaction kettle body is in an abnormal dangerous state. During discharging, solid and liquid are discharged out of the reaction kettle body through a kettle bottom discharging pipe arranged at the bottom of the hydrogenation kettle body, and hydrogen is discharged through a vent pipeline arranged at the top of the hydrogenation kettle body.
In order to ensure the controllable flow rate during the hydrogen evacuation and the safety of the hydrogen discharge, the utility model sequentially arranges a current limiting pore plate, an evacuation pipe flowmeter, an evacuation regulating valve and an evacuation switch valve (which are close to the hydrogenation kettle body as the near end) from the near end to the far end of the hydrogenation kettle body on an evacuation pipeline for the hydrogen discharge. When the hydrogen is discharged out of the ventilation pipeline, the flow limiting pore plate reduces the pressure of high-pressure hydrogen to below 100kPa, the hydrogen flows through the ventilation pipe flowmeter, the ventilation pipe flowmeter collects hydrogen flow information and feeds the flow information back to the remote control system, and the control system controls the opening of the ventilation regulating valve arranged behind the ventilation pipe flowmeter according to the flow information so as to ensure the flow velocity of the hydrogen. Under normal state, the emptying switch valve is in an open state, when the hydrogen passing through the flow limiting orifice plate and the emptying pipe flowmeter exceeds the flow high limit, the emptying switch valve is closed in an interlocking way, and accidents are prevented in the process of emptying the hydrogen.
Preferably, the emptying pipeline is provided with a flame arrester, and the flame arrester is arranged at the far end of the emptying switch valve. Is used for preventing the fire phenomenon and flame from entering the reaction kettle body when the emptying pipeline is in fire.
Preferably, the outlet of the emptying pipeline is provided with a water tank, and the outlet of the emptying pipeline is immersed in the water surface in the water tank. The outlet is sealed by water, and when the flow rate of the outlet is too high, static fire is caused, so that the flame can be extinguished in time.
In the utility model, the emptying pipeline for discharging hydrogen jointly ensures the safety of hydrogen emptying through flow control, fire-retarding arrangement and outlet water seal arrangement.
Specifically, feed mechanism locates hydrogenation cauldron body top includes solid feed inlet, liquid phase inlet pipe, nitrogen gas inlet pipe and hydrogen inlet pipe.
The solid feeding port is used for feeding solid phase reaction materials. The liquid phase feed pipe is used for feeding liquid phase reaction materials. The nitrogen feed line was used for nitrogen introduction. Hydrogen feed pipe for the introduction of hydrogen
Specifically, a first hydrogen switch valve, a second hydrogen switch valve, a hydrogen feeding regulating valve and a hydrogen feeding flowmeter are sequentially arranged on the hydrogen feeding pipe from the near end to the far end of the hydrogenation kettle body; and the control system controls the opening of the hydrogen feeding regulating valve according to the feedback information of the hydrogen feeding flowmeter to ensure the hydrogen flow rate. The first hydrogen switch valve and the second hydrogen switch valve are controlled by different remote control systems, and when the hydrogen flow is in an abnormal state, the first hydrogen switch valve and the second hydrogen switch valve are closed to ensure the safety of hydrogen feeding.
Be equipped with first manual ball valve and nitrogen branch pipe on the nitrogen gas inlet pipe, the nitrogen gas inlet pipe with the blow-down pipeline passes through nitrogen branch pipe connection, be equipped with the manual ball valve of second on the nitrogen branch pipe. Before the hydrogenation reaction starts, nitrogen is introduced into the reaction kettle body, and air in the reaction kettle body is discharged. When nitrogen is introduced, the first manual ball valve is opened, and the nitrogen is introduced; and (3) after the nitrogen is introduced, closing the first manual ball valve, and opening the second manual ball valve to enable the nitrogen in the pipeline to be discharged through the emptying pipeline.
Specifically, a liquid phase feeding switch valve is arranged on the liquid phase feeding pipe.
Specifically, the temperature control mechanism comprises a jacket arranged on the outer surface of the hydrogenation kettle body, a medium feeding pipe arranged at the bottom of the jacket and a medium discharging pipe arranged at the top of the jacket.
The medium feeding pipe comprises a heating medium feeding pipe and 2 branch pipelines of a cooling medium feeding pipe.
The heat medium feeding pipe is provided with a first heat medium inlet valve and a second heat medium inlet valve which are connected in series. The first heating medium inlet valve is used for preventing danger caused by overhigh temperature of the body to be treated for emergency closing. The main function of the second heating medium inlet valve is to control the inlet and outlet of the heating medium and ensure the temperature supply of the reaction kettle. The first heat medium inlet valve is in an open state under normal conditions, and when the temperature of the reaction kettle body is too high, the remote control system emergently closes the first heat medium inlet valve.
The refrigerant feeding pipe is provided with a first refrigerant inlet valve and a second refrigerant inlet valve which are connected in parallel. Under normal conditions, the refrigerant medium flows through the medium feeding pipe through the second refrigerant inlet valve, enters the jacket and supplies temperature to the reaction kettle body. The first refrigerant inlet valve is used as a spare pipeline for feeding the refrigerant, and when the second refrigerant inlet valve is damaged, a cold medium is introduced.
The medium discharging pipe comprises a heating medium discharging pipe and 2 branch pipelines of a cooling medium discharging pipe.
The heat medium discharging pipe is provided with a first heat medium outlet valve and a second heat medium outlet valve which are connected in series. The first heat medium outlet valve is normally in an open state. The switch of the second heat medium outlet valve is used for controlling the outflow of the heat medium.
The refrigerant discharging pipe is provided with a first refrigerant outlet valve and a second refrigerant outlet valve which are connected in parallel. The first refrigerant outlet valve is normally closed. The switch of the second refrigerant outlet valve is used for controlling the outflow of the refrigeration medium. When the reaction kettle body is required to be in a low-temperature state, the refrigerant medium is required to be in a circulating state, and when the second refrigerant outlet valve is damaged, the first refrigerant outlet valve is used as a standby pipeline for discharging the refrigerant, and the refrigerant medium flows out to be in the circulating state.
Specifically, safety protection mechanism is including locating the explosion venting pipe at hydrogenation cauldron body top and locate the rupture disk on the explosion venting pipe, when reation kettle pressure was too high, the rupture disk was exploded, made reation kettle pressure release, prevented that reation kettle body from exploding.
Specifically, the control system described above is implemented by means conventional in the art.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The emptying pipeline of the utility model jointly ensures the safety of hydrogen emptying through flow control, fire-retarding setting and outlet water seal setting.
(2) The utility model ensures that the pressure of the blow-down pipe is reduced to micro positive pressure through the flow limiting of the flow limiting orifice plate, simultaneously reduces the pressure difference between the front and the back of the valve, reduces the requirement on the type selection of the regulating valve, and reduces the risk of internal leakage.
(3) The temperature control mechanism ensures that the reaction temperature in the reaction kettle body is at a normal temperature through the emergency actions of the first heating medium inlet valve, the first cooling medium inlet valve, the first heating medium outlet valve and the first cooling medium outlet valve, and prevents accidents.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The reference numerals are: the hydrogenation kettle comprises a hydrogenation kettle body 1, a feeding mechanism 2, a solid feeding port 21, a liquid phase feeding pipe 22, a liquid phase feeding switch valve 221, a nitrogen feeding pipe 23, a first manual ball valve 231, a nitrogen branch pipe 232, a second manual ball valve 233, a hydrogen feeding pipe 24, a discharging mechanism 3, a vent pipeline 31, a limiting orifice plate 311, a vent flow meter 312, a vent regulating valve 313, a vent switch valve 314, a flame arrester 315, a water tank 316, a kettle bottom discharging pipe 32, a temperature control mechanism 4, a jacket 41, a medium feeding pipe 42, a heating medium feeding pipe 421, a first heating medium inlet valve 4211, a second heating medium inlet valve 4212, a cooling medium feeding pipe 4221, a second cooling medium inlet valve 4222 medium discharging pipe 43, heating medium discharging pipe 431, first heating medium outlet valve 4311, second heating medium outlet valve 4312, refrigerant discharging pipe 432, first refrigerant outlet valve 4321, second refrigerant outlet valve 4322, safety protection mechanism 5, first jacket temperature transmitter 6, second jacket temperature transmitter 7, first hydrogenation kettle temperature transmitter 8, second hydrogenation kettle temperature transmitter 9, explosion venting pipe 51, rupture disk 52, first hydrogen switching valve 10, second hydrogen switching valve 11, hydrogen feeding regulating valve 12, hydrogen feeding flowmeter 13, hydrogen feeding protection flowmeter 14, water tank water supplementing pipe 15, hydrogenation kettle pressure transmitter 16, stirring motor 17.
Detailed Description
The utility model is further described below with reference to examples and figures. The devices, connection structures and methods referred to in this utility model are those well known in the art, unless otherwise specified.
Example 1
As shown in fig. 1, a reaction apparatus for hydrogenation reaction includes: the hydrogenation kettle body 1, a feeding mechanism 2, a discharging mechanism 3, a temperature control mechanism 4 and a safety protection mechanism 5 on the hydrogenation kettle body; and the hydrogenation kettle further comprises a stirring motor 17 arranged on the hydrogenation kettle body 1 and used for stirring hydrogenation reaction.
The feeding mechanism 2 is arranged at the top of the hydrogenation kettle body 1 and comprises a solid feeding hole 21, a liquid phase feeding pipe 22, a nitrogen feeding pipe 23 and a hydrogen feeding pipe 24.
The nitrogen feed pipe 23 is used for introducing nitrogen to discharge air in the reaction kettle body. The nitrogen inlet pipe 23 is provided with a first manual ball valve 231 and a nitrogen branch pipe 232. The nitrogen gas inlet pipe 23 is connected with the emptying pipeline 31 through a nitrogen gas branch pipe 232, and a second manual ball valve 233 is arranged on the nitrogen gas branch pipe 232. When nitrogen is introduced, the first manual ball valve is opened, and the nitrogen is introduced; and (3) after the nitrogen is introduced, closing the first manual ball valve, and opening the second manual ball valve to enable the nitrogen in the pipeline to be discharged through the emptying pipeline.
A hydrogen feed line 24 is used for the hydrogen feed. The hydrogen feeding pipe 24 is provided with a first hydrogen switch valve 10, a second hydrogen switch valve 11, a hydrogen feeding regulating valve 12, a hydrogen feeding flowmeter 13 and a hydrogen feeding protection flowmeter 14 from the near end to the far end in sequence by taking the hydrogenation kettle body as the near end. The control system controls the opening of the hydrogen feeding regulating valve 12 according to the feedback information of the hydrogen feeding flowmeter 13. The first hydrogen switch valve 10 and the second hydrogen switch valve 11 are controlled by different remote control systems, and the hydrogen feeding protection flowmeter 14 is connected with the second hydrogen switch valve 11, and when the hydrogen flow is in an abnormal state, the first hydrogen switch valve and the second hydrogen switch valve are closed to ensure the safety of hydrogen feeding.
The solid feed port 21 is used for feeding solid phase reaction materials. The liquid phase feeding pipe 22 is used for feeding liquid phase reaction materials, and a liquid phase feeding switch valve 221 is arranged on the liquid phase feeding pipe.
The discharging mechanism 3 comprises a discharging pipe 31 arranged at the top of the hydrogenation kettle body 1 and a kettle bottom discharging pipe 32 arranged at the bottom of the hydrogenation kettle body 1. The venting pipeline 31 is provided with a hydrogenation kettle pressure transmitter 16, a current limiting orifice plate 311, a venting flow meter 312, a venting regulating valve 313, a venting switch valve 314 and a flame arrester 315 from the near end to the far end of the hydrogenation kettle body 1 in sequence. The outlet of the emptying pipeline 31 is provided with a water tank 316, the outlet of the emptying pipeline 31 is immersed in the water surface in the water tank 316, and the water tank is also provided with a water tank water supplementing pipe 15. When the hydrogen is discharged out of the ventilation pipeline, the flow limiting pore plate reduces the pressure of high-pressure hydrogen to below 100kPa, the hydrogen flows through the ventilation pipe flowmeter, the ventilation pipe flowmeter collects hydrogen flow information and feeds the flow information back to the remote control system, and the control system controls the opening of the ventilation regulating valve arranged behind the ventilation pipe flowmeter according to the flow information so as to ensure the flow velocity of the hydrogen. Under normal state, the emptying switch valve is in an open state, when the hydrogen passing through the flow limiting orifice plate and the emptying pipe flowmeter exceeds the flow high limit, the emptying switch valve is closed in an interlocking way, and accidents are prevented in the process of emptying the hydrogen. The flame arrester is used for preventing the fire phenomenon and flame channeling into the reaction kettle body from occurring in the emptying pipeline. The outlet is sealed by water, and when the flow rate of the outlet is too high, static fire is caused, so that the flame can be extinguished in time.
The temperature control mechanism 4 comprises a jacket 41 arranged on the outer surface of the hydrogenation kettle body 1, a medium feed pipe 42 arranged at the bottom of the jacket 41, a medium discharge pipe 43 arranged at the top of the jacket 41, a first jacket temperature transmitter 6 and a second jacket temperature transmitter 7 arranged on the medium discharge pipe 43; the hydrogenation kettle further comprises a first hydrogenation kettle temperature transmitter 8 and a second hydrogenation kettle temperature transmitter 9 which are arranged at the top of the hydrogenation kettle body and are used for monitoring the temperature of the reaction kettle body.
The medium feeding pipe 42 comprises 2 branch pipelines including a heating medium feeding pipe 421 and a cooling medium feeding pipe 422. The heat medium feed pipe 421 is provided with a first heat medium inlet valve 4211 and a second heat medium inlet valve 4212 connected in series, and the refrigerant feed pipe 422 is provided with a first refrigerant inlet valve 4221 and a second refrigerant inlet valve 4222 connected in parallel.
The medium discharging pipe 43 comprises 2 branch pipelines including a heating medium discharging pipe 431 and a cooling medium discharging pipe 432. The heat medium discharging pipe 431 is provided with a first heat medium outlet valve 4311 and a second heat medium outlet valve 4312 which are connected in series, and the refrigerant discharging pipe 432 is provided with a first refrigerant outlet valve 4321 and a second refrigerant outlet valve 4322 which are connected in parallel.
The safety protection mechanism 5 comprises a explosion venting pipe 51 arranged at the top of the hydrogenation kettle body 1 and a rupture disk 52 arranged on the explosion venting pipe 51. When the pressure of the reaction kettle is too high, the rupture disk bursts, so that the reaction kettle is depressurized, and the explosion of the reaction kettle body is prevented.
The reaction raw materials are put into the reaction kettle body through the feeding mechanism, the hydrogenation chemical reaction is carried out in the reaction kettle body, and in the reaction process, the temperature control mechanism is used for controlling the temperature of the reaction kettle body, so that the chemical reaction is in a required temperature condition, and the safety protection mechanism can take action when the chemical reaction in the reaction kettle body is in an abnormal dangerous state. During discharging, solid and liquid are discharged out of the reaction kettle body through a kettle bottom discharging pipe arranged at the bottom of the hydrogenation kettle body, hydrogen is discharged through a discharging pipeline arranged at the top of the hydrogenation kettle body, and the safety of hydrogen discharging is jointly guaranteed through flow control, fire-retarding setting and outlet water seal setting in hydrogen discharging.
Example 2
As shown in fig. 1, a reaction apparatus for hydrogenation reaction includes: the hydrogenation kettle body 1, a feeding mechanism 2, a discharging mechanism 3, a temperature control mechanism 4 and a safety protection mechanism 5 on the hydrogenation kettle body; and the hydrogenation kettle further comprises a stirring motor 17 arranged on the hydrogenation kettle body 1 and used for stirring hydrogenation reaction.
The feeding mechanism 2 is arranged at the top of the hydrogenation kettle body 1 and comprises a solid feeding hole 21, a liquid phase feeding pipe 22, a nitrogen feeding pipe 23 and a hydrogen feeding pipe 24.
The nitrogen feed pipe 23 is used for introducing nitrogen to discharge air in the reaction kettle body. The nitrogen inlet pipe 23 is provided with a first manual ball valve 231 and a nitrogen branch pipe 232. The nitrogen gas inlet pipe 23 is connected with the emptying pipeline 31 through a nitrogen gas branch pipe 232, and a second manual ball valve 233 is arranged on the nitrogen gas branch pipe 232. When nitrogen is introduced, the first manual ball valve is opened, and the nitrogen is introduced; and (3) after the nitrogen is introduced, closing the first manual ball valve, and opening the second manual ball valve to enable the nitrogen in the pipeline to be discharged through the emptying pipeline.
A hydrogen feed line 24 is used for the hydrogen feed. The hydrogen feeding pipe 24 is provided with a first hydrogen switch valve 10, a second hydrogen switch valve 11, a hydrogen feeding regulating valve 12, a hydrogen feeding flowmeter 13 and a hydrogen feeding protection flowmeter 14 from the near end to the far end in sequence by taking the hydrogenation kettle body as the near end. The control system controls the opening of the hydrogen feeding regulating valve 12 according to the feedback information of the hydrogen feeding flowmeter 13. The first hydrogen switch valve 10 and the second hydrogen switch valve 11 are controlled by different remote control systems, and the hydrogen feeding protection flowmeter 14 is connected with the second hydrogen switch valve 11, and when the hydrogen flow is in an abnormal state, the first hydrogen switch valve and the second hydrogen switch valve are closed to ensure the safety of hydrogen feeding.
The solid feed port 21 is used for feeding solid phase reaction materials. The liquid phase feeding pipe 22 is used for feeding liquid phase reaction materials, and a liquid phase feeding switch valve 221 is arranged on the liquid phase feeding pipe.
The discharging mechanism 3 comprises a discharging pipe 31 arranged at the top of the hydrogenation kettle body 1 and a kettle bottom discharging pipe 32 arranged at the bottom of the hydrogenation kettle body 1. The venting pipeline 31 is provided with a hydrogenation kettle pressure transmitter 16, a current limiting orifice plate 311, a venting flow meter 312, a venting regulating valve 313, a venting switch valve 314 and a flame arrester 315 from the near end to the far end of the hydrogenation kettle body 1 in sequence. The outlet of the emptying pipeline 31 is provided with a water tank 316, the outlet of the emptying pipeline 31 is immersed in the water surface in the water tank 316, and the water tank is also provided with a water tank water supplementing pipe 15. When the hydrogen is discharged out of the ventilation pipeline, the flow limiting pore plate reduces the pressure of high-pressure hydrogen to below 100kPa, the hydrogen flows through the ventilation pipe flowmeter, the ventilation pipe flowmeter collects hydrogen flow information and feeds the flow information back to the remote control system, and the control system controls the opening of the ventilation regulating valve arranged behind the ventilation pipe flowmeter according to the flow information so as to ensure the flow velocity of the hydrogen. Under normal state, the emptying switch valve is in an open state, when the hydrogen passing through the flow limiting orifice plate and the emptying pipe flowmeter exceeds the flow high limit, the emptying switch valve is closed in an interlocking way, and accidents are prevented in the process of emptying the hydrogen. The flame arrester is used for preventing the fire phenomenon and flame channeling into the reaction kettle body from occurring in the emptying pipeline. The outlet is sealed by water, and when the flow rate of the outlet is too high, static fire is caused, so that the flame can be extinguished in time.
The temperature control mechanism 4 comprises a jacket 41 arranged on the outer surface of the hydrogenation kettle body 1, a medium feed pipe 42 arranged at the bottom of the jacket 41 and a medium discharge pipe 43 arranged at the top of the jacket 41; the hydrogenation kettle further comprises a first hydrogenation kettle temperature transmitter 8 and a second hydrogenation kettle temperature transmitter 9 which are arranged at the top of the hydrogenation kettle body and are used for monitoring the temperature of the reaction kettle body.
The medium feeding pipe 42 comprises 2 branch pipelines including a heating medium feeding pipe 421 and a cooling medium feeding pipe 422. The heat medium feed pipe 421 is provided with a first heat medium inlet valve 4211 and a second heat medium inlet valve 4212 connected in series, and the refrigerant feed pipe 422 is provided with a first refrigerant inlet valve 4221 and a second refrigerant inlet valve 4222 connected in parallel.
The medium discharging pipe 43 comprises 2 branch pipelines including a heating medium discharging pipe 431 and a cooling medium discharging pipe 432. The heat medium discharging pipe 431 is provided with a first heat medium outlet valve 4311 and a second heat medium outlet valve 4312 which are connected in series, and the refrigerant discharging pipe 432 is provided with a first refrigerant outlet valve 4321 and a second refrigerant outlet valve 4322 which are connected in parallel.
The safety protection mechanism 5 comprises a explosion venting pipe 51 arranged at the top of the hydrogenation kettle body 1 and a rupture disk 52 arranged on the explosion venting pipe 51. When the pressure of the reaction kettle is too high, the rupture disk bursts, so that the reaction kettle is depressurized, and the explosion of the reaction kettle body is prevented.
The reaction raw materials are put into the reaction kettle body through the feeding mechanism, the hydrogenation chemical reaction is carried out in the reaction kettle body, and in the reaction process, the temperature control mechanism is used for controlling the temperature of the reaction kettle body, so that the chemical reaction is in a required temperature condition, and the safety protection mechanism can take action when the chemical reaction in the reaction kettle body is in an abnormal dangerous state. During discharging, solid and liquid are discharged out of the reaction kettle body through a kettle bottom discharging pipe arranged at the bottom of the hydrogenation kettle body, hydrogen is discharged through a discharging pipeline arranged at the top of the hydrogenation kettle body, and the safety of hydrogen discharging is jointly guaranteed through flow control, fire-retarding setting and outlet water seal setting in hydrogen discharging.
Example 3
As shown in fig. 1, a reaction apparatus for hydrogenation reaction includes: the hydrogenation kettle body 1, a feeding mechanism 2, a discharging mechanism 3 and a temperature control mechanism 4 on the hydrogenation kettle body; and the hydrogenation kettle further comprises a stirring motor 17 arranged on the hydrogenation kettle body 1 and used for stirring hydrogenation reaction.
The feeding mechanism 2 is arranged at the top of the hydrogenation kettle body 1 and comprises a solid feeding hole 21, a liquid phase feeding pipe 22, a nitrogen feeding pipe 23 and a hydrogen feeding pipe 24.
The nitrogen feed pipe 23 is used for introducing nitrogen to discharge air in the reaction kettle body. The nitrogen inlet pipe 23 is provided with a first manual ball valve 231 and a nitrogen branch pipe 232. The nitrogen gas inlet pipe 23 is connected with the emptying pipeline 31 through a nitrogen gas branch pipe 232, and a second manual ball valve 233 is arranged on the nitrogen gas branch pipe 232. When nitrogen is introduced, the first manual ball valve is opened, and the nitrogen is introduced; and (3) after the nitrogen is introduced, closing the first manual ball valve, and opening the second manual ball valve to enable the nitrogen in the pipeline to be discharged through the emptying pipeline.
A hydrogen feed line 24 is used for the hydrogen feed. The hydrogen feeding pipe 24 is provided with a first hydrogen switch valve 10, a second hydrogen switch valve 11, a hydrogen feeding regulating valve 12, a hydrogen feeding flowmeter 13 and a hydrogen feeding protection flowmeter 14 from the near end to the far end in sequence by taking the hydrogenation kettle body as the near end. The control system controls the opening of the hydrogen feeding regulating valve 12 according to the feedback information of the hydrogen feeding flowmeter 13. The first hydrogen switch valve 10 and the second hydrogen switch valve 11 are controlled by different remote control systems, and the hydrogen feeding protection flowmeter 14 is connected with the second hydrogen switch valve 11, and when the hydrogen flow is in an abnormal state, the first hydrogen switch valve and the second hydrogen switch valve are closed to ensure the safety of hydrogen feeding.
The solid feed port 21 is used for feeding solid phase reaction materials. The liquid phase feeding pipe 22 is used for feeding liquid phase reaction materials, and a liquid phase feeding switch valve 221 is arranged on the liquid phase feeding pipe.
The discharging mechanism 3 comprises a discharging pipe 31 arranged at the top of the hydrogenation kettle body 1 and a kettle bottom discharging pipe 32 arranged at the bottom of the hydrogenation kettle body 1. The venting pipeline 31 is provided with a hydrogenation kettle pressure transmitter 16, a current limiting orifice plate 311, a venting flow meter 312, a venting regulating valve 313, a venting switch valve 314 and a flame arrester 315 from the near end to the far end of the hydrogenation kettle body 1 in sequence. The outlet of the emptying pipeline 31 is provided with a water tank 316, the outlet of the emptying pipeline 31 is immersed in the water surface in the water tank 316, and the water tank is also provided with a water tank water supplementing pipe 15. When the hydrogen is discharged out of the ventilation pipeline, the flow limiting pore plate reduces the pressure of high-pressure hydrogen to below 100kPa, the hydrogen flows through the ventilation pipe flowmeter, the ventilation pipe flowmeter collects hydrogen flow information and feeds the flow information back to the remote control system, and the control system controls the opening of the ventilation regulating valve arranged behind the ventilation pipe flowmeter according to the flow information so as to ensure the flow velocity of the hydrogen. Under normal state, the emptying switch valve is in an open state, when the hydrogen passing through the flow limiting orifice plate and the emptying pipe flowmeter exceeds the flow high limit, the emptying switch valve is closed in an interlocking way, and accidents are prevented in the process of emptying the hydrogen. The flame arrester is used for preventing the fire phenomenon and flame channeling into the reaction kettle body from occurring in the emptying pipeline. The outlet is sealed by water, and when the flow rate of the outlet is too high, static fire is caused, so that the flame can be extinguished in time.
The temperature control mechanism 4 comprises a jacket 41 arranged on the outer surface of the hydrogenation kettle body 1, a medium feeding pipe 42 arranged at the bottom of the jacket 41, a medium discharging pipe 43 arranged at the top of the jacket 41, and a first jacket temperature transmitter 6 arranged on the medium discharging pipe 43; still including locating the first hydrogenation cauldron temperature transmitter 8 at hydrogenation cauldron body top for the control of reation kettle body temperature.
The medium feeding pipe 42 comprises 2 branch pipelines including a heating medium feeding pipe 421 and a cooling medium feeding pipe 422. The heat medium feed pipe 421 is provided with a first heat medium inlet valve 4211 and a second heat medium inlet valve 4212 connected in series, and the refrigerant feed pipe 422 is provided with a first refrigerant inlet valve 4221 and a second refrigerant inlet valve 4222 connected in parallel.
The medium discharging pipe 43 comprises 2 branch pipelines including a heating medium discharging pipe 431 and a cooling medium discharging pipe 432. The heat medium discharging pipe 431 is provided with a first heat medium outlet valve 4311 and a second heat medium outlet valve 4312 which are connected in series, and the refrigerant discharging pipe 432 is provided with a first refrigerant outlet valve 4321 and a second refrigerant outlet valve 4322 which are connected in parallel.
The safety protection mechanism 5 comprises a explosion venting pipe 51 arranged at the top of the hydrogenation kettle body 1 and a rupture disk 52 arranged on the explosion venting pipe 51. When the pressure of the reaction kettle is too high, the rupture disk bursts, so that the reaction kettle is depressurized, and the explosion of the reaction kettle body is prevented.
The reaction raw materials are put into the reaction kettle body through the feeding mechanism, the hydrogenation chemical reaction is carried out in the reaction kettle body, and in the reaction process, the temperature control mechanism is used for controlling the temperature of the reaction kettle body, so that the chemical reaction is in a required temperature condition, and the safety protection mechanism can take action when the chemical reaction in the reaction kettle body is in an abnormal dangerous state. During discharging, solid and liquid are discharged out of the reaction kettle body through a kettle bottom discharging pipe arranged at the bottom of the hydrogenation kettle body, hydrogen is discharged through a discharging pipeline arranged at the top of the hydrogenation kettle body, and the safety of hydrogen discharging is jointly guaranteed through flow control, fire-retarding setting and outlet water seal setting in hydrogen discharging.
The control system is realized by the prior art.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, and any simple modification, variation and equivalent structural transformation made according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (10)
1. A reaction unit for hydrogenation reactions, characterized in that: comprising the following steps:
a hydrogenation kettle body (1);
the discharging mechanism (3) comprises a vent pipeline (31) arranged at the top of the hydrogenation kettle body (1) and a kettle bottom discharging pipe (32) arranged at the bottom of the hydrogenation kettle body (1);
a flow limiting pore plate (311), a blow-down flow meter (312), a blow-down regulating valve (313) and a blow-down switch valve (314) are sequentially arranged on the blow-down pipeline (31) from the near end to the far end of the hydrogenation kettle body (1); the control system controls the opening degree of the emptying regulating valve (313) and the opening and closing of the emptying switching valve (314) according to the feedback information of the emptying flow meter (312);
the feeding mechanism (2) is arranged on the hydrogenation kettle body (1);
the temperature control mechanism (4) is arranged on the hydrogenation kettle body (1);
the safety protection mechanism (5) is arranged on the hydrogenation kettle body (1).
2. A reaction unit for hydrogenation reactions according to claim 1 characterised in that the vent pipe (31) is provided with a flame arrester (315), the vent pipe (31) outlet is provided with a water tank (316), the vent pipe (31) outlet is submerged in the water surface in the water tank (316).
3. The reaction device for hydrogenation reaction according to claim 1, wherein the feeding mechanism (2) is arranged at the top of the hydrogenation kettle body (1) and comprises a solid feeding port (21), a liquid phase feeding pipe (22), a nitrogen feeding pipe (23) and a hydrogen feeding pipe (24).
4. A reaction device for hydrogenation reaction according to claim 3, wherein the hydrogen feeding pipe (24) is provided with a first hydrogen switch valve (10), a second hydrogen switch valve (11), a hydrogen feeding regulating valve (12) and a hydrogen feeding flowmeter (13) from the near end to the far end of the hydrogenation kettle body (1) in sequence; and the control system controls the opening of the hydrogen feeding regulating valve (12) according to the feedback information of the hydrogen feeding flowmeter (13).
5. A reaction device for hydrogenation reaction according to claim 3, wherein the nitrogen inlet pipe (23) is provided with a first manual ball valve (231) and a nitrogen branch pipe (232), the nitrogen inlet pipe (23) is connected with the emptying pipe (31) through the nitrogen branch pipe (232), and the nitrogen branch pipe (232) is provided with a second manual ball valve (233).
6. A reaction device for hydrogenation reactions according to claim 3, characterized in that the liquid phase feed pipe (22) is provided with a liquid phase feed on-off valve (221).
7. The reaction device for hydrogenation reaction according to claim 1, wherein the temperature control mechanism (4) comprises a jacket (41) arranged on the outer surface of the hydrogenation kettle body (1), a medium feeding pipe (42) arranged at the bottom of the jacket (41) and a medium discharging pipe (43) arranged at the top of the jacket (41).
8. The reaction device for hydrogenation reaction according to claim 7, wherein the medium feed pipe (42) comprises 2 branch pipes of a heating medium feed pipe (421) and a cooling medium feed pipe (422);
the heat medium feeding pipe (421) is provided with a first heat medium inlet valve (4211) and a second heat medium inlet valve (4212) which are connected in series, and the refrigerant feeding pipe (422) is provided with a first refrigerant inlet valve (4221) and a second refrigerant inlet valve (4222) which are connected in parallel.
9. A reaction unit for hydrogenation reactions according to claim 7, characterized in that the medium outlet (43) comprises 2 branch pipes of a heat medium outlet (431) and a cold medium outlet (432);
the heat medium discharging pipe (431) is provided with a first heat medium outlet valve (4311) and a second heat medium outlet valve (4312) which are connected in series, and the refrigerant discharging pipe (432) is provided with a first refrigerant outlet valve (4321) and a second refrigerant outlet valve (4322) which are connected in parallel.
10. A reaction device for hydrogenation reactions according to claim 1 characterised in that the safety protection mechanism (5) comprises a detonation tube (51) arranged at the top of the hydrogenation vessel body (1) and a rupture disk (52) arranged on the detonation tube (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222906814.4U CN218981545U (en) | 2022-10-31 | 2022-10-31 | Reaction device for hydrogenation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222906814.4U CN218981545U (en) | 2022-10-31 | 2022-10-31 | Reaction device for hydrogenation reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218981545U true CN218981545U (en) | 2023-05-09 |
Family
ID=86195883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222906814.4U Active CN218981545U (en) | 2022-10-31 | 2022-10-31 | Reaction device for hydrogenation reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218981545U (en) |
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2022
- 2022-10-31 CN CN202222906814.4U patent/CN218981545U/en active Active
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