Device for preventing intermixing of various media of reactor with jacket

Abstract

The utility model discloses a device for preventing intermixing of various media of a reactor with a jacket, which comprises a reaction kettle, the jacket on the outer layer of the kettle, a medium a outlet valve (1), a medium b outlet valve (2), a medium a inlet valve (3), a medium b inlet valve (4), a valve (5) and a medium discharge valve (6), switching signals of the medium a outlet valve (1), the medium b outlet valve (2), the medium a inlet valve (3), the medium b inlet valve (4), the valve (5) and the medium discharge valve (6) are connected with a DCS program control interface, and the DCS program control interface displays the switching state of each valve; a manual valve is arranged on the valve (1-6) at the same time, two proximity switches are arranged on the manual valve, a metal sheet at one end is fixed to a valve screw, an inductive proximity switch is fixed through a hole in the other end, mutual locking is prevented through multiple control, and mutual locking between different media can be effectively prevented to cause loss.

Description

Technical Field

[0001] The application relates to the technical field of chemical equipment and discloses a device for preventing multiple media from mixing with each other in a jacketed reactor. Background Art

[0002] In the chemical industry, some jacketed reactors require heat transfer media or cooling media to control the reaction temperature. For example, when the reactor needs to be cooled, the circulating water is switched to chilled brine. After the materials in the crystallization kettle are mixed and reacted, the interlayer needs to be cooled rapidly by chilled water or refrigerant. Since the circulating water and the chilled brine share the jacket cavity, it is necessary to manually check the open or closed status of each valve. When the operator operates improperly, such as opening the circulating water valve but not closing it, and then opening the chilled brine valve, due to the high pressure of the chilled brine and the low pressure of the circulating water, the chilled brine leaks into the circulating water pool along with the circulating water, causing serious losses. If it is not discovered in time, the chilled brine will be diluted in large quantities, which may lead to failure of the cooling system, cause safety hazards, and seriously affect production. In order to avoid such risks, the applicant has improved the existing device. Utility Model Content

[0003] The utility model aims to provide a device for preventing multiple media from mixing with each other in a jacketed reactor, so as to solve the problem of mixing with each other caused by valve closing error proposed in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for preventing multiple media from being mixed together in a jacketed reactor, comprising a reactor, a jacket on the outer layer of the reactor, a medium a outlet valve (1), a medium b outlet valve (2), a medium a inlet valve (3), a medium b inlet valve (4), a valve (5) and a medium discharge valve (6). The switch signals of the medium a outlet valve (1), the medium b outlet valve (2), the medium a inlet valve (3), the medium b inlet valve (4), the valve (5) and the medium discharge valve (6) are connected to a DCS control system, and a control screen displays the switch status of each valve.

[0005] Preferably, the medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6) are synchronously provided with manual valves, and two proximity switches are provided on the manual valves, a metal sheet at one end is fixed on the valve screw, and a hole is opened at the other end to fix the inductive proximity switch. If the valve stem contacts the probe, the proximity indicator light turns on, and if the valve stem leaves, the proximity switch indicator light turns off, which is convenient for on-site operators to observe.

[0006] When necessary, the medium a and the medium b coming out of the medium a outlet valve (1) or the medium b outlet valve (2) enter the corresponding medium inlet valve through the control of the valve (5).

[0007] Preferably, the metal sheet is made of a conductive metal material, specifically one of copper, iron and aluminum.

[0008] When the medium discharge valve (6) discharges circulating water, it enters the clean water tank; when the medium discharge valve (6) discharges chilled brine, it enters the brine tank; when the medium discharge valve (6) discharges hot water, it enters the hot water tank; when the medium discharge valve (6) discharges steam condensate, it enters the cooling water tank.

[0009] Preferably, the jacket of the outer layer of the reactor can be fed with one of compressed air, nitrogen, low-pressure steam, hot water, circulating water or frozen brine. When compressed air or nitrogen is fed, it can be used to replace one of the low-pressure steam, hot water, circulating water or frozen brine in the outer jacket.

[0010] Preferably, the medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6) controlled by the DCS control system can adjust the flow rate of the medium to achieve an optimal temperature control effect.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6) are all equipped with manual valves. Two proximity switches are provided at the valve stem of the manual valve. If the valve stem contacts the probe, the proximity indicator light turns on. If the valve stem leaves the probe, the proximity switch indicator light turns off, which facilitates on-site operator observation and avoids misoperation.

[0013] 2. The switch signals of the medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6) are all connected to the DCS control system. The control system screen can display the switch status of each valve, which is convenient for the control personnel to check and verify;

[0014] 3. When compressed air or nitrogen is introduced into the outer jacket of the reactor, it is used to replace one of the low-pressure steam, hot water, circulating water or frozen brine in the outer jacket to prevent the cross-talk between multiple media.

[0015] Through multiple control anti-interlocking locks, the risk of interlocking between media can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A diagram of a device for preventing cross-talk between multiple media in a jacketed reactor;

[0017] Figure 2 This is a schematic diagram of the manual valve after modification.

[0018] Reference numerals: medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6). DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1 The utility model provides a technical solution: a device for preventing multiple media from mixing with each other in a jacketed reactor, comprising a reactor, a jacket on the outer layer of the reactor, a medium a outlet valve (1), a medium b outlet valve (2), a medium a inlet valve (3), a medium b inlet valve (4), a valve (5) and a medium discharge valve (6). The switch signals of the medium a outlet valve (1), the medium b outlet valve (2), the medium a inlet valve (3), the medium b inlet valve (4), the valve (5) and the medium discharge valve (6) are connected to a DCS control system, and a control screen displays the switch status of each valve.

[0021] Example 1

[0022] Taking a lithium-ion battery electrolyte additive a as an example, the reaction process needs to go through three stages of temperature control.

[0023] The first stage is the heating stage. Put the reactants into the reactor, start stirring, heat from 20°C to 60°C, use low-pressure steam for heating, open the low-pressure steam inlet valve and low-pressure steam outlet valve, and after the first stage, close the low-pressure steam inlet valve;

[0024] The second stage is the 60℃ insulation process. Use hot water for insulation, open the hot water inlet valve and the hot water outlet valve, and let in hot water. After the insulation process is over, close the hot water inlet valve first, then open the compressed air inlet valve, and use compressed air to press out the hot water in the jacket to avoid the two media from mixing, and then close the hot water outlet valve and the compressed air inlet valve;

[0025] The third stage is the cooling stage. Rapidly cool from 60°C to 10°C, using frozen brine (25% calcium chloride solution), open the inlet valve and outlet valve of the frozen brine, and after reaching the cooling temperature, close the inlet valve of the frozen brine, open the compressed air inlet valve, and press the frozen brine in the jacket to avoid the two media from mixing, and then close the frozen brine outlet valve and compressed air inlet valve;

[0026] During the heating or cooling process, the control program displays the switch status of all valves. Once the valve status is inconsistent with the process setting, the program control interface will alarm to remind the on-site operator whether the valve is opened in the wrong position.

[0027] Example 2

[0028] Taking a lithium-ion battery electrolyte additive B as an example, the reaction process needs to go through four stages of temperature control.

[0029] Put the reactants into the reactor and start stirring.

[0030] The first stage is the cooling stage. Open the frozen brine inlet valve and the frozen brine outlet valve, use the frozen brine to quickly cool down to -5°C, and start the dropwise addition for reaction. After the dropwise addition is completed, close the frozen brine inlet valve, open the compressed air inlet valve, use compressed air to press the frozen brine out of the jacket, and then close the compressed air inlet valve and the frozen brine outlet valve;

[0031] The second stage is the natural temperature rise stage. Open the circulating water inlet valve and the circulating water outlet valve, and use circulating water to naturally heat up at a temperature not exceeding 30°C. If necessary, the second stage process can be repeated to ensure a 30°C insulation process. When the temperature reaches 30°C, close the circulating water inlet valve, open the compressed air inlet valve, press the circulating water out of the jacket, and then close the circulating water outlet valve and the compressed air inlet valve;

[0032] The third stage is the heating process. Open the low-pressure steam inlet valve and the low-pressure steam outlet valve, use steam heating, and raise the temperature to 50°C, which is conducive to removing the low-boiling solvent in the reactor. After the reaction is completed, close the low-pressure steam inlet valve;

[0033] The fourth stage is the cooling stage. Open the circulating water inlet valve and the circulating water outlet valve to cool the reactor. After the discharge is completed, close the circulating water inlet valve, open the compressed air inlet valve, press the circulating water out of the jacket, and then close the compressed air inlet valve and the circulating water outlet valve.

[0034] During the cooling or heating process, the control program displays the switch status of all valves. Once the valve status is inconsistent with the process setting, the program control interface will alarm to remind the on-site operator whether the valve is opened in the wrong position.

[0035] In summary, the anti-interlocking lock of multiple controls can effectively prevent the circulating water and the chilled brine from interlocking.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for preventing multiple media from mixing with each other in a jacketed reactor, comprising a reactor, a jacket on the outer layer of the reactor, a medium a outlet valve (1), a medium b outlet valve (2), a medium a inlet valve (3), a medium b inlet valve (4), a valve (5) and a medium discharge valve (6), characterized in that: The switch signals of the medium a outlet valve (1), the medium b outlet valve (2), the medium a inlet valve (3), the medium b inlet valve (4), the valve (5) and the medium discharge valve (6) are connected to a DCS control system with parameter display, and the control system screen displays the switch state of each valve; the medium a outlet valve (1), the medium b outlet valve (2), the medium a inlet valve (3), the medium b inlet valve (4), the valve (5) and the medium discharge valve (6) are also provided with manual valves, and two proximity switches are provided on the manual valves, a metal sheet at one end is fixed on the valve screw, and a hole is opened at the other end to fix the inductive proximity switch.

2. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1, characterized in that: The medium coming out of the medium a outlet valve (1) or the medium b outlet valve (2) enters the corresponding medium inlet valve through the control of the valve (5).

3. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1 or 2, characterized in that: The metal sheet is made of conductive metal, specifically one of copper, iron and aluminum.

4. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1, characterized in that: When the medium discharge valve (6) discharges circulating water, it enters the clean water tank; when the medium discharge valve (6) discharges chilled brine, it enters the brine tank; when the medium discharge valve (6) discharges hot water, it enters the hot water tank; when the medium discharge valve (6) discharges steam condensate, it enters the cooling water tank.

5. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1 or 2, characterized in that: The jacket on the outer layer of the reactor can be fed with one of compressed air, nitrogen, low-pressure steam, hot water, circulating water or frozen brine.

6. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1, characterized in that: The medium a outlet valve (1), medium b outlet valve (2), medium a inlet valve (3), medium b inlet valve (4), valve (5) and medium discharge valve (6) controlled by the DCS control system can adjust the flow rate of the medium to achieve an optimal temperature control effect.

7. The device for preventing multiple media from mixing with each other in a jacketed reactor according to claim 1, characterized in that: When compressed air or nitrogen is introduced into the outer jacket of the reactor, it is used to replace one of the low-pressure steam, hot water, circulating water or frozen brine in the outer jacket.

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