Automatic closed feeding operation device for complete Grignard reaction

Abstract

The utility model belongs to the technical field of chemical production devices, and particularly relates to an automatic closed feeding operation device for complete Grignard reaction, which comprises a stock bin and a preparation tank communicated with the stock bin, the preparation tank is connected with a Grignard kettle through a knockout pump, and a blanking stop valve is arranged on a pipeline connected between the stock bin and the preparation tank. An inflation pipeline is arranged on the material bin, an inflation valve is arranged on the inflation pipeline, an exhaust pipeline is arranged on the material bin, an exhaust valve is arranged on the exhaust pipeline, magnesium powder is added into the material bin, the oxygen content in the material bin is controlled through the inflation valve and the exhaust valve, inert gas is filled in the material bin, and the magnesium powder in the material bin is controlled to enter the preparation tank through the discharging stop valve; magnesium powder is mixed with materials contained in the preparation tank, and the mixed materials are conveyed to a Grignard kettle through a material beating pump. The device disclosed by the utility model is simple to operate, reduces toxic gas inhaled by personnel and environmental influence due to closed feeding, and solves the problem of huge potential safety hazard of maltol Grignard feeding.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production devices, and in particular relates to an operating device for fully Grignard reaction automatic closed feeding. Background Art

[0002] Maltol has the special aroma of caramelized butterscotch and is a good flavor enhancer and low-intensity sweetener for food and beverages. It can be widely used as a flavor enhancer and sweetness enhancer and flavor corrector for edible flavor preparations, food, beverages, brewing and other products.

[0003] At present, the safety and technical control effects in the maltol production process are low, safety accidents often occur, and the costs are too high, so it is imperative to reduce safety risks.

[0004] Currently, maltol production utilizes the Grignard reaction. In industry, Grignard reactions are mostly performed by feeding materials through the manhole of the reactor. When the feeding port of the reactor is opened, the odor is diffused and cannot be controlled. Moreover, there are problems in the manual feeding process: 1. The Grignard reaction solvent is volatile and forms explosive gas with the air; 2. The odor is diffused when the Grignard reaction is fed, which affects the environment; 3. Manual open-type feeding on site is not conducive to personnel health and poses huge safety risks. Utility Model Content

[0005] The problem to be solved by the utility model is that during the feeding process of the Grignard reaction, explosive gas is formed in the reactor, the safety factor is low and the risk is huge.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A fully automated closed feeding operation device for Grignard reaction comprises a silo and a preparation tank communicated with the silo, the preparation tank being connected to a Grignard reactor via a feeding pump, a feed cut-off valve being provided on a pipeline connecting the silo and the preparation tank, a charging pipeline being provided on the silo, a charging valve being provided on the charging pipeline, an exhaust pipeline being provided on the silo, and an exhaust valve being provided on the exhaust pipeline. Magnesium powder is added to the silo, and the oxygen content and inert gas in the silo are controlled by the charging and exhaust valves, the magnesium powder in the silo is controlled to enter the preparation tank via the feed cut-off valve, the magnesium powder is mixed with materials contained in the preparation tank, and the mixed materials are delivered to the Grignard reactor via the feeding pump.

[0008] Furthermore, a feeding port is provided on the silo, and a fixed amount of magnesium powder is fed into the silo through the feeding port.

[0009] Furthermore, a bin cover is provided on the feeding port.

[0010] Furthermore, the inflation pipeline is arranged on the side of the silo.

[0011] Further, the exhaust pipeline is arranged on the top of the material bin.

[0012] Further, the exhaust pipeline is connected with a tail gas treatment system.

[0013] Further, the material bin is arranged above the preparation tank.

[0014] Further, an oxygen content meter is arranged on the material bin.

[0015] Further, a stirring paddle is arranged in the preparation tank, and the top of the stirring paddle is arranged on the top of the preparation tank.

[0016] Further, the material pumping pump is arranged on the right bottom of the preparation tank.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] 1. The material bin and the preparation tank can be independently closed and communicated, and the material bin and the preparation tank can be closed during the feeding process, so that the feeding can be realized in a closed environment without the need of disassembling a plurality of bolts when opening the manhole of the Grignard reactor, and the device is simple to operate.

[0019] 2. The present application reduces the inhalation of toxic gas by personnel and environmental impact due to closed feeding.

[0020] 3. The Grignard reactor of the present application does not contact air and will not explode, solving the problem of huge safety hidden danger of maltol Grignard feeding. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the operation device for complete Grignard reaction automation closed feeding of the present application.

[0022] Reference signs:

[0023] 1 - material bin; 2 - feeding port; 3 - air charging valve; 4 - exhaust valve; 5 - preparation tank; 6 - material discharging cut-off valve; 7 - oxygen content meter; 8 - stirring paddle; 9 - material pumping pump. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be clearly described below in combination with the description of the drawings. Obviously, the described embodiments are not all the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "back", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] The utility model provides a kind of operation device of complete Grignard reaction automation closed feeding, comprising:

[0027] Bin 1 is provided with feeding port 2 on bin 1, for feeding quantitative magnesium powder into bin 1;Feeding port 2 is detachably connected with bin cover;

[0028] Inflating valve 3, the side of bin 1 is connected with inflating pipeline, inflating pipeline is provided with inflating valve 3, and inflating valve 3 is used to control the inert gas filled into bin 1;Preferably, inert gas is nitrogen;

[0029] Exhaust valve 4, bin 1 top is connected with exhaust pipeline, exhaust pipeline is provided with exhaust valve 4, for controlling whether to discharge substandard mixed gas in bin 1 and residual gas after feeding to outside;Exhaust pipeline is connected with tail gas treatment system, and mixed gas is discharged into tail gas treatment system by exhaust valve 4, and tail gas treatment system is prior art.

[0030] Preparation tank 5, bin 1 is connected with preparation tank 5 by pipeline, and the pipeline is provided with discharging cut-off valve 6;

[0031] Discharging cut-off valve 6 is used to control the magnesium powder of bin 1 to enter preparation tank 5;

[0032] Oxygen content meter 7, oxygen content meter 7 is arranged on bin 1, for measuring the oxygen content in bin 1, when oxygen content meter 7 determines that the oxygen content in bin 1 is lower than the oxygen content set value in bin 1, discharging cut-off valve 6 is opened;Oxygen content set value is 0.5%.

[0033] Stirring paddle 8, preparation tank 5 is provided with stirring paddle 8, for stirring the material in preparation tank 5;

[0034] Punching pump 9, the bottom of preparation tank 5 is connected with punching pump 9 by pipeline, and punching pump 9 is arranged at the right bottom of preparation tank 5, for conveying the material in preparation tank 5 to Grignard kettle for mixing.

[0035] Working process:

[0036] 1, open bin cover of bin 1 and input quantitative magnesium powder, close bin cover;

[0037] 2, open the inert gas filling valve 3, and open the exhaust valve 4 to discharge the mixed gas in the bunker 1 until the oxygen content in the bunker 1 is lower than the set value, and the interlock closes the exhaust valve 4 and the filling valve 3;

[0038] 3, the oxygen content detector 7 detects that the oxygen content in the bunker 1 is lower than the set value, the discharge cut-off valve 6 at the bottom of the bunker 1 is opened, and the magnesium powder enters the preparation tank 5;

[0039] 4, the preparation tank 5 is opened for stirring, the magnesium powder is mixed with the materials contained in the preparation tank 5 after stirring by the stirring paddle 8, the material pumping pump 9 is opened, the filling valve 3 is opened to avoid forming negative pressure, and the mixed materials are sent to the Grignard reactor through the material pumping pump 9;

[0040] When the liquid level in the preparation tank 5 is lower than the set lower limit, the material pumping pump 9 is stopped, and the discharge cut-off valve 6 and the filling valve 3 are closed.

[0041] The above technical features constitute the best embodiment of the present application, which has strong adaptability and the best implementation effect, and unnecessary technical features can be added or reduced according to actual needs to meet the needs of different situations.

[0042] Finally, it should be noted that the above content is only used to illustrate the technical scheme of the present application, and is not a limitation on the protection scope of the present application. Simple modifications or equivalent replacements of the technical scheme of the present application made by those skilled in the art do not deviate from the essence and scope of the technical scheme of the present application.

Claims

1. An apparatus for operating a fully Grignard reaction automated closed feed, characterized in that, The device comprises a bin, a preparation tank communicated with the bin, a Grignard reactor connected with the preparation tank through a material pumping pump, a discharging cut-off valve arranged on a pipeline connected between the bin and the preparation tank, an aeration pipeline arranged on the bin, an aeration valve arranged on the aeration pipeline, an exhaust pipeline arranged on the bin, and an exhaust valve arranged on the exhaust pipeline.

2. The apparatus for operating a fully Grignard reaction automated closed feed according to claim 1, wherein, The bin is provided with a feeding opening through which a certain amount of magnesium powder is fed into the bin.

3. The apparatus for operating a fully Grignard reaction automated closed feed according to claim 2, wherein, A bin cover is arranged on the feeding opening.

4. The apparatus for operating a fully Grignard reaction automated closed feed according to claim 1, wherein, The aeration pipeline is arranged on the side of the bin.

5. The apparatus for operating a fully Grignard reaction automated closed feed according to claim 1, wherein, The exhaust pipeline is arranged on the top of the bin.

6. The apparatus for operating a fully Grignard reaction automated closed feed according to claim 1, wherein, The exhaust pipeline is connected with a tail gas treatment system.

7. The apparatus of claim 1, wherein the apparatus is configured to perform a complete Grignard reaction with automated closed feeding. The bin is arranged above the preparation tank.

8. The apparatus for operating a fully Grignard reaction automated closed feed according to any one of claims 1-7, wherein, An oxygen content meter is arranged on the bin.

9. The automatic closed feeding operation device for complete Grignard reaction according to claim 1, characterized in that: A stirring paddle is arranged in the preparation tank, and the top of the stirring paddle is arranged on the top of the preparation tank.

10. The apparatus of claim 1, wherein the apparatus is configured to perform a complete Grignard reaction with automated closed feeding. The material pumping pump is arranged at the right bottom of the preparation tank.

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