Raw material control device for bromine reduction reaction

Abstract

The invention provides a bromine reduction reaction raw material control device which comprises a bromine reduction reaction tank body, a spectrum monitoring control box, a bromine raw material adding connecting pipe, an intelligent control box terminal, a reduction reaction auxiliary material adding control pipe, a reaction tank inlet pipe, a pressure release valve, a connecting inclined pipe and a buffer bent pipe, a bolt in the bromine reduction reaction tank body is connected with an optical fiber temperature sensor. The device comprises a bromine reduction reaction tank body, a spectrum monitoring control box, a bromine raw material adding connecting pipe, an intelligent control box terminal, a reduction reaction auxiliary material adding control pipe, a reaction tank inlet pipe, a pressure release valve, a connecting inclined pipe and a buffer bent pipe, wherein an optical fiber temperature sensor is in bolted connection with the interior of the bromine reduction reaction tank body; semi-automatic raw material adding can be achieved, and the adding speed is precisely controlled; the defect that traditional equipment is insufficient in prevention of volatility and corrosion of bromine is overcome, the leakage risk is reduced, and the existence safety is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of bromine production equipment, and in particular relates to a raw material control device for a bromine reduction reaction. Background Art

[0002] As an important chemical raw material, bromine is widely used in chemical, pharmaceutical, pesticide, and petroleum industries. At present, there are two classic methods for bromine extraction: steam distillation and air blowing, as well as ion exchange resin, membrane separation, adsorption, electrolysis, electrosorption, air oxidation, acid oxidation and other methods. Among them, air blowing is the most mature and commonly used bromine extraction process, which can be used to extract bromine from low-concentration bromine-containing brine (2-4g / L) or brine in the sea salt production process. Its basic principle is: after bromide ions are oxidized to free bromine by chlorine, they are blown out of the brine by air according to the gas-liquid equilibrium relationship between the gas and liquid phase concentrations of bromine, and then absorbed by an absorbent. After absorption, chlorine is introduced for oxidation or acidification to free the bromine, and finally bromine is separated from the liquid phase under the action of water vapor stripping and condensed to obtain bromine.

[0003] Bromine is a halogen element that exists in the form of bromide in nature. It is a dark red-brown fuming liquid at room temperature. Bromine is soluble in water and easily soluble in organic solvents such as alcohol, ether, and carbon tetrachloride. Bromine is an oxidant that can react with hydrocarbons to replace hydrogen and can also undergo addition reactions with unsaturated organic matter. However, the existing raw material addition for bromine reduction reactions still relies heavily on manual or semi-automatic addition of raw materials, which can easily lead to side reactions due to uneven addition rates. Traditional equipment does not provide adequate protection against the volatility and corrosiveness of bromine, posing safety risks.

[0004] In view of this, it is very necessary to invent a raw material control device for bromine reduction reaction. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a raw material control device for bromine reduction reaction to solve the problems that the raw material addition of existing bromine reduction reaction mostly relies on manual or semi-automatic addition of raw materials, which is easy to cause side reactions due to uneven addition rate; traditional equipment has insufficient protection against bromine volatility and corrosiveness, and there are safety hazards. A raw material control device for bromine reduction reaction comprises a bromine reduction reaction tank body, a spectrum monitoring control box, a bromine raw material adding connecting pipe, an intelligent control box terminal, a reduction reaction auxiliary material adding control pipe, a reaction tank inlet pipe, a pressure relief valve, a connecting oblique pipe and a buffer elbow pipe, wherein the internal bolts of the bromine reduction reaction tank body are connected with an optical fiber temperature sensor; the bromine raw material adding connecting pipe is threadedly connected to the left side of the spectrum monitoring control box; the spectrum monitoring control box is connected to the spectrum monitoring control box by a communication optical cable or wireless WiFi; the reduction reaction auxiliary material adding control pipe is embedded in the upper right position of the bromine reduction reaction tank body and is connected to the inside thereof; the reaction tank inlet pipe is welded to the upper left side of the bromine reduction reaction tank body and is connected to the inside thereof; the lower end of the connecting oblique pipe is bolted to the upper part of the reaction tank inlet pipe, the upper end of the connecting oblique pipe is threadedly connected to the lower end of the buffer elbow, and the buffer elbow is threadedly connected to the right side of the spectrum monitoring control box; the pressure relief valve is threadedly connected to the upper part of the connecting oblique pipe and is connected to the inside thereof.

[0006] Preferably, the spectral monitoring control box includes a spectral monitoring cabin, an embedded through pipe, a multi-spectral online monitoring module and a main board, wherein the embedded through pipe is laterally embedded in the upper part of the spectral monitoring cabin; the multi-spectral online monitoring module is screwed to the right side of the embedded through pipe; and the main board is screwed to the inside of the spectral monitoring cabin.

[0007] Preferably, a first emergency control valve is embedded on the left side of the inner part of the embedded through pipe.

[0008] Preferably, a near-infrared spectrometer and a Raman spectrometer probe are disposed inside the multi-spectral online monitoring module, and the near-infrared spectrometer and the Raman spectrometer probe are disposed inside the embedded through-tube.

[0009] Preferably, the right side of the intelligent control box terminal is screwed to an all-in-one display screen, the lower left side of the intelligent control box terminal is screwed to a control keyboard, the lower right side of the intelligent control box terminal is embedded with a power button, and the lower middle position of the intelligent control box terminal is embedded with an alarm.

[0010] Preferably, a solenoid valve is embedded on the upper side of the reduction reaction auxiliary material addition control tube, a second emergency control valve is embedded on the lower part of the reduction reaction auxiliary material addition control tube, and a flow monitoring module is screwed to the lower inner side of the reduction reaction auxiliary material addition control tube.

[0011] Preferably, the bromine raw material addition connecting pipe is threadedly connected to the left end of the embedded through pipe, and the buffer elbow is threadedly connected to the right end of the embedded through pipe.

[0012] Preferably, the bromine raw material addition connecting pipe is connected to the interior of the bromine reduction reaction tank body through an embedded through pipe, a connecting inclined pipe and a buffer elbow.

[0013] Preferably, the flow monitoring module is electrically connected to the integrated display screen.

[0014] Preferably, the integrated display screen is provided with a built-in digital twin model and a fuzzy neural network algorithm, the digital twin model integrates the Arrhenius dynamic equation and the LSTM neural network, the training data set contains more than 2000 groups of historical operating condition data, and the model prediction error is ≤3%.

[0015] Preferably, the outer surfaces of the multi-spectral online monitoring module, the probe of the near-infrared spectrometer, the reduction reaction auxiliary material addition control tube and the embedded through tube are provided with a PTFE anti-corrosion coating.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The raw material control device for the bromine reduction reaction is installed between the bromine reduction reaction tank and the bromine raw material addition connecting pipe for the bromine reduction reaction, and is connected to the addition pipeline of the raw materials used for the reduction catalyst through the reduction reaction auxiliary material addition control pipe. The multi-spectral online monitoring module, the near-infrared spectrometer and the Raman spectroscopy probe online monitoring unit (resolution ±2nm) are combined with the digital twin model and the fuzzy neural network algorithm to improve the accuracy of the reaction endpoint judgment and avoid product decomposition caused by excessive reduction; the bromine conversion rate is stabilized at 95%±1.2% (the traditional process fluctuation range is 82-89%).

[0017] The raw material control device for the bromine reduction reaction can realize semi-automatic addition of raw materials and accurately control the addition rate; it overcomes the defects of traditional equipment in insufficient protection against volatility and corrosiveness of bromine, reduces the risk of leakage, and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the spectrum monitoring control box of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the intelligent control box terminal of the present invention.

[0022] Figure 5 It is a structural schematic diagram of a reduction reaction auxiliary material adding control tube of the present invention.

[0023] In the figure: 1. Bromine reduction reaction tank; 11. Fiber optic temperature sensor; 2. Spectral monitoring control box; 21. Spectral monitoring cabin; 22. Embedded through pipe; 221. First emergency control valve; 23. Multi-spectral online monitoring module; 231. Near-infrared spectrometer; 232. Raman spectrometer probe; 24. Main board; 3. Bromine raw material addition connecting pipe; 4. Intelligent control box terminal; 41. Display screen all-in-one machine; 42. Control keyboard; 43. Power button; 44. Alarm; 5. Reduction reaction auxiliary material addition control pipe; 51. Solenoid valve; 52. Second emergency control valve; 53. Flow monitoring module; 6. Reaction tank inlet pipe; 7. Pressure relief valve; 8. Connecting inclined pipe; 9. Buffer elbow. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings: Example

[0025] As attached Figure 1 To Attachment Figure 2 As shown, the present invention provides a raw material control device for bromine reduction reaction, comprising a bromine reduction reaction tank body 1, a spectrum monitoring control box 2, a bromine raw material adding connecting pipe 3, an intelligent control box terminal 4, a reduction reaction auxiliary material adding control pipe 5, a reaction tank inlet pipe 6, a pressure relief valve 7, a connecting inclined pipe 8 and a buffer elbow 9, wherein the internal bolts of the bromine reduction reaction tank body 1 are connected with an optical fiber temperature sensor 11; the bromine raw material adding connecting pipe 3 is threadedly connected to the left side of the spectrum monitoring control box 2; the spectrum monitoring control box 2 is connected to the spectrum monitoring by a communication optical cable or wireless WiFi. The control box 2 is connected; the reduction reaction auxiliary material addition control tube 5 is embedded in the upper right position of the bromine reduction reaction tank body 1 and is connected to the inside thereof; the reaction tank inlet pipe 6 is welded to the upper left side of the bromine reduction reaction tank body 1 and is connected to the inside thereof; the lower end of the connecting inclined tube 8 is bolted to the upper part of the reaction tank inlet pipe 6, the upper end of the connecting inclined tube 8 is threadedly connected to the lower end of the buffer elbow 9, and the buffer elbow 9 is threadedly connected to the right side of the spectrum monitoring control box 2; the pressure relief valve 7 is threadedly connected to the upper part of the connecting inclined tube 8 and is connected to the inside thereof.

[0026] As attached Figure 3As shown, in the above implementation scheme, specifically, the spectral monitoring control box 2 includes a spectral monitoring cabin 21, an embedded through pipe 22, a multi-spectral online monitoring module 23 and a main board 24, the embedded through pipe 22 is horizontally embedded in the upper part of the spectral monitoring cabin 21; the multi-spectral online monitoring module 23 is screwed to the right side of the embedded through pipe 22; the main board 24 is screwed to the inside of the spectral monitoring cabin 21.

[0027] In addition, in the above-mentioned embodiment, specifically, a first emergency control valve 221 is embedded on the left side of the interior of the embedded through pipe 22; a near-infrared spectrometer 231 and a Raman spectrometer probe 232 are arranged inside the multi-spectral online monitoring module 23, and the near-infrared spectrometer 231 and the Raman spectrometer probe 232 are arranged inside the embedded through pipe 22; the multi-spectral online monitoring module 23 adopts an Ocean Insight NIRQuest+ spectrometer with a sampling frequency of 10Hz.

[0028] As attached Figure 4 As shown, in the above implementation scheme, specifically, the right side of the smart control box terminal 4 is screwed connected to an integrated display screen 41, the lower left side of the smart control box terminal 4 is screwed connected to a control keyboard 42, the lower right side of the smart control box terminal 4 is embedded with a power button 43, and the lower middle position of the smart control box terminal 4 is embedded with an alarm 44.

[0029] As attached Figure 5 As shown, in the above embodiment, specifically, a solenoid valve 51 is embedded on the upper side of the reduction reaction auxiliary material addition control tube 5, a second emergency control valve 52 is embedded on the lower part of the reduction reaction auxiliary material addition control tube 5, and a flow monitoring module 53 is screwed to the lower inner side of the reduction reaction auxiliary material addition control tube 5.

[0030] In the above embodiment, specifically, the bromine raw material adding connecting pipe 3 is threadedly connected to the left end of the embedded through pipe 22 , and the buffer elbow 9 is threadedly connected to the right end of the embedded through pipe 22 .

[0031] In the above embodiment, specifically, the bromine raw material adding connecting pipe 3 is connected to the interior of the bromine reduction reaction tank 1 through the embedded through pipe 22, the connecting inclined pipe 8 and the buffer elbow 9.

[0032] In the above implementation scheme, specifically, the flow monitoring module 53 is electrically connected to the integrated display screen machine 41; the integrated display screen machine 41 is provided with a built-in digital twin model and a fuzzy neural network algorithm, and the digital twin model integrates the Arrhenius dynamic equation and the LSTM neural network, and the training data set contains more than 2000 groups of historical operating data, and the model prediction error is ≤3%.

[0033] In the above embodiment, specifically, the outer surfaces of the multi-spectral online monitoring module 23, the probe of the near-infrared spectrometer 231, the reduction reaction auxiliary material addition control tube 5 and the embedded through tube 22 are provided with a PTFE anti-corrosion coating.

[0034] The comparative test of the raw material control device using bromine reduction reaction and the traditional device under the same working conditions (test standard: HG / T 2057-2023) is shown in Table 1 and Table 2 below. ;

[0035] It is installed between the bromine reduction reaction tank and the bromine raw material addition connection pipe for the bromine reduction reaction, and is connected to the addition pipeline of the raw materials used for the reduction catalyst through the reduction reaction auxiliary material addition control pipe. The multi-spectral online monitoring module, near-infrared spectrometer and Raman spectrum probe online monitoring unit (resolution ±2nm) are combined with the digital twin model and fuzzy neural network algorithm to improve the accuracy of reaction endpoint judgment and avoid product decomposition caused by over-reduction; the bromine conversion rate is stabilized at 95%±1.2% (the traditional process fluctuation range is 82-89%). The digital twin system (1ms data refresh rate) dynamically optimizes the addition curve, stabilizes the bromine conversion rate at 95%±1.2% (the traditional process fluctuation range is 82-89%), and increases the raw material utilization rate to 98.5% (the original process is 92%).

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A raw material control device for bromine reduction reaction, characterized in that: The raw material control device for bromine reduction reaction comprises a bromine reduction reaction tank body (1), a spectrum monitoring control box (2), a bromine raw material adding connecting pipe (3), an intelligent control box terminal (4), a reduction reaction auxiliary material adding control pipe (5), a reaction tank inlet pipe (6), a pressure relief valve (7), a connecting inclined pipe (8) and a buffer elbow (9), wherein the internal bolts of the bromine reduction reaction tank body (1) are connected with an optical fiber temperature sensor (11); the bromine raw material adding connecting pipe (3) is threadedly connected to the left side of the spectrum monitoring control box (2); the spectrum monitoring control box (2) is connected to the spectrum monitoring control box (11) by a communication optical cable or wireless WiFi. 2); the reduction reaction auxiliary material addition control tube (5) is embedded in the upper right position of the bromine reduction reaction tank body (1) and is connected to the interior thereof; the reaction tank inlet pipe (6) is welded to the upper left side of the bromine reduction reaction tank body (1) and is connected to the interior thereof; the lower end of the connecting inclined tube (8) is bolted to the upper part of the reaction tank inlet pipe (6), the upper end of the connecting inclined tube (8) is threadedly connected to the lower end of the buffer elbow (9), and the buffer elbow (9) is threadedly connected to the right side of the spectrum monitoring control box (2); the pressure relief valve (7) is threadedly connected to the upper part of the connecting inclined tube (8) and is connected to the interior thereof.

2. The raw material control device for bromine reduction reaction according to claim 1, characterized in that: The spectrum monitoring control box (2) comprises a spectrum monitoring cabin (21), an embedded through-tube (22), a multi-spectrum online monitoring module (23) and a main board (24), wherein the embedded through-tube (22) is transversely embedded in the upper part of the spectrum monitoring cabin (21); the multi-spectrum online monitoring module (23) is screw-connected to the right side of the embedded through-tube (22); and the main board (24) is screw-connected to the inside of the spectrum monitoring cabin (21).

3. The raw material control device for bromine reduction reaction according to claim 2, characterized in that: A first emergency control valve (221) is embedded on the left side of the interior of the embedded through pipe (22).

4. The raw material control device for bromine reduction reaction according to claim 2, characterized in that: A near-infrared spectrometer (231) and a Raman spectrometer probe (232) are arranged inside the multi-spectral online monitoring module (23), and the near-infrared spectrometer (231) and the Raman spectrometer probe (232) are arranged inside the embedded through tube (22).

5. The raw material control device for bromine reduction reaction according to claim 1, characterized in that: The right side of the intelligent control box terminal (4) is screwed to an integrated display screen (41), the lower left side of the intelligent control box terminal (4) is screwed to an operating keyboard (42), the lower right side of the intelligent control box terminal (4) is inlaid with a power button (43), and the lower middle position of the intelligent control box terminal (4) is inlaid with an alarm (44).

6. The raw material control device for bromine reduction reaction according to claim 1, characterized in that: The upper side of the reduction reaction auxiliary material addition control tube (5) is inlaid with a solenoid valve (51), the lower part of the reduction reaction auxiliary material addition control tube (5) is inlaid with a second emergency control valve (52), and the lower side of the reduction reaction auxiliary material addition control tube (5) is screw-connected with a flow monitoring module (53).

7. The raw material control device for bromine reduction reaction according to claim 2, characterized in that: The bromine raw material addition connecting pipe (3) is threadedly connected to the left end of the embedded through pipe (22), and the buffer elbow (9) is threadedly connected to the right end of the embedded through pipe (22).

8. The raw material control device for bromine reduction reaction according to claim 1, characterized in that: The bromine raw material addition connecting pipe (3) is connected to the interior of the bromine reduction reaction tank (1) through an embedded through pipe (22), a connecting inclined pipe (8) and a buffer elbow (9).

9. The raw material control device for bromine reduction reaction according to claim 2, characterized in that: The bromine raw material addition connecting pipe (3) is connected to the interior of the bromine reduction reaction tank (1) through an embedded through pipe (22), a connecting inclined pipe (8) and a buffer elbow (9).

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