Device for automatically adding activated carbon in acyl chloride production

Abstract

An automatic activated carbon feeding device for acyl chloride production comprises a temporary storage tank for containing activated carbon, a metering tank for feeding and metering activated carbon, a mixing kettle for containing fatty acid and an ejector for feeding activated carbon into an external reaction kettle, and the metering tank is communicated with the temporary storage tank through an activated carbon conveyor; the bottom of the mixing kettle is communicated with a circulating pipeline, the bottom of the metering tank is communicated with an activated carbon feeding pipeline, the circulating pipeline is communicated with an inlet I of an ejector, the activated carbon feeding pipeline is communicated with an inlet II of the ejector, an outlet of the ejector is communicated with a total feeding pipeline used for being matched with an external reaction kettle, and a circulating pump is installed on the circulating pipeline. And a dust diaphragm pump is mounted on the activated carbon adding pipeline. Activated carbon can be accurately metered, stored, conveyed and added in a closed mode, overflowing of activated carbon dust is reduced, meanwhile, manual operation can be reduced, and harm of the activated carbon dust to the environment and operators can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to acyl chloride production technical field, especially a device for acyl chloride production automatic active carbon is added. BACKGROUND

[0002] Acy chloride is an important carboxylic acid derivative, is widely used in pesticide synthesis, drug synthesis, amino acid table active, high molecular initiator etc. field, at present, the acylating agent of preparation acyl chloride mainly has phosgene, phosphorus trichloride, phosphorus pentachloride, dimethyl sulfoxide, oxalyl chloride etc.;In above acylating agent, acyl chloride prepared by phosgene has acyl chloride content high, yield high, tail gas easy to handle etc.

[0003] In the production process of acyl chloride, active carbon needs to be added as the carrier of catalyst and has the function of decoloring the output acyl chloride, the industry adds active carbon by the way of manual adding of bagged active carbon, because the active carbon particle is small and light in weight, when adding, it will splash everywhere, causes waste, pollutes the surrounding environment and cannot be accurately measured, and the splashed active carbon also has influence on the health of adding personnel. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problem that the prior art is short of, provides a device for acyl chloride production automatic active carbon is added, can accurately measure, close storage, conveying and adding active carbon, reduces the overflow of active carbon dust, can also reduce manual operation and reduce the harm of active carbon dust to the environment and operating personnel.

[0005] The utility model solves the technical problem that the prior art is short of, provides a device for acyl chloride production automatic active carbon is added, can accurately measure, close storage, conveying and adding active carbon, reduces the overflow of active carbon dust, can also reduce manual operation and reduce the harm of active carbon dust to the environment and operating personnel.

[0006] The utility model solves the technical problem that the prior art is short of, provides a device for acyl chloride production automatic active carbon is added, can accurately measure, close storage, conveying and adding active carbon, reduces the overflow of active carbon dust, can also reduce manual operation and reduce the harm of active carbon dust to the environment and operating personnel.

[0007] The technical problems to be solved by the utility model further can be further realized through following technical schemes, for the device for automatic adding of activated carbon for acyl chloride production, the activated carbon conveyor is spirally conveyed.

[0008] The technical problems to be solved by the utility model further can be further realized through following technical schemes, for the device for automatic adding of activated carbon for acyl chloride production, the activated carbon conveyor is spirally conveyed.

[0009] The technical problems to be solved by the utility model further can be further realized through following technical schemes, for the device for automatic adding of activated carbon for acyl chloride production, the activated carbon conveyor is spirally conveyed.

[0010] The technical problems to be solved by the utility model further can be further realized through following technical schemes, for the device for automatic adding of activated carbon for acyl chloride production, the activated carbon conveyor is spirally conveyed.

[0011] The technical problems to be solved by the utility model further can be further realized through following technical schemes, for the device for automatic adding of activated carbon for acyl chloride production, the activated carbon conveyor is spirally conveyed.

[0012] Compared with the prior art, the utility model can realize accurate measurement, closed storage, conveying and adding of activated carbon, reduce the overflow of activated carbon dust, and can reduce the harm of manual operation and activated carbon dust to the environment and operating personnel, and secondly, the dust diaphragm pump and the ejector are added in a relay mode, the conveying capacity of activated carbon is increased, the conveying distance is lengthened, the position of the temporary storage tank can be flexibly arranged, and the activated carbon can directly enter the reaction kettle and mix with the material, so as to reduce the waste caused by the suspension of activated carbon in the gas phase space into the tail gas pipeline and the blockage of the tail gas pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model. CONCRETE IMPLEMENTATION

[0014] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0015] Referring to Figure 1 A device for automatic adding of activated carbon in acyl chloride production, through the mixed adding of activated carbon and fatty acid, it brings many benefits such as improving mixing efficiency and uniformity, optimizing production process and cost, environmental protection and safety, and potential health benefits in acyl chloride production process, not only improves product quality and production efficiency, but also reduces production cost and negative impact on the environment, specifically:

[0016] The device comprises a temporary storage tank 1 for containing activated carbon, a metering tank 3 for adding and metering activated carbon, a mixing kettle 5 for containing fatty acid, and a sprayer 6 for adding activated carbon to an external reaction kettle, the metering tank 3 is communicated with the temporary storage tank 1 through an activated carbon conveyor 2, which is used for transferring activated carbon from the temporary storage tank 1 to the metering tank 3, preferably, the activated carbon conveyor 2 is inclined, the lower end of the activated carbon conveyor 2 is arranged as an input end and communicated with the bottom of the temporary storage tank 1, and the higher end of the activated carbon conveyor 2 is arranged as an output end and communicated with the top of the metering tank 3, further preferably, the activated carbon conveyor 2 is a spiral conveyor.

[0017] A circulating pipeline is communicated with the bottom of the mixing kettle 5 for outputting fatty acid externally, an activated carbon adding pipeline is communicated with the bottom of the metering tank 3 for outputting activated carbon externally, the circulating pipeline is communicated with the inlet I of the sprayer 6, the activated carbon adding pipeline is communicated with the inlet II of the sprayer 6, and the outlet of the sprayer 6 is communicated with a total adding pipeline for cooperating with the external reaction kettle, a circulating pump 7 is installed on the circulating pipeline, and a dust diaphragm pump 4 is installed on the activated carbon adding pipeline, so that under the action of the circulating pump 7, the fatty acid is sprayed into the sprayer 6 at high speed to form a strong negative pressure, thereby attracting the activated carbon conveyed by the dust diaphragm pump 4 into the sprayer 6, and then the fatty acid and the activated carbon are mixed and added to the external reaction kettle through the total adding pipeline.

[0018] In order to better control the adding process, a fatty acid adding control valve is installed on the circulating pipeline, a metering control valve is installed at the communication between the metering tank 3 and the activated carbon adding pipeline, and an activated carbon adding control valve is installed on the activated carbon adding pipeline.

[0019] The mixing kettle 5 is also provided with a stirring device 8, which preferably comprises a stirring shaft with stirring blades and a driving motor for driving the stirring shaft to rotate, the stirring shaft is vertically installed on the mixing kettle 5 through a bearing and a bearing seat, and the motor shaft of the driving motor is connected with the stirring shaft through a shaft coupling.

[0020] In order to treat the tail gas that may be generated, a tail gas discharge pipeline is also installed on the total dosing pipeline, and a tail gas discharge control valve is installed on the tail gas discharge pipeline, so as to ensure the environmental protection and safety of the production process.

[0021] The metering tank 3 is a metering tank 3 in the prior art, which is a device used for material storage and occasions with low metering accuracy requirements, and is used for accurately metering the amount of activated carbon to be dosed. The required amount of activated carbon can be sent into the metering tank 3 through the accurate control of the screw conveyor, so as to ensure the accuracy of the activated carbon dosing.

[0022] The dust diaphragm pump 4 is a pneumatic pump specially designed for conveying dust, particulate matter and the like. Based on the pneumatic principle, the diaphragm of the pump body is driven to reciprocate through the loading and release of compressed gas, so as to realize the suction and discharge of dust and particulate matter.

[0023] The actual use process of the device is as follows:

[0024] The activated carbon from the tank car is discharged into the temporary storage tank 1 for temporary storage. When the activated carbon needs to be dosed, the activated carbon is conveyed to the activated carbon metering tank 3 through the screw conveyor 2. When the required amount is metered, the screw conveyor 2 is interlocked to be stopped. The mixing kettle 5 is filled with fatty acids and is provided with a stirring device 8 for stirring and mixing treatment.

[0025] When the activated carbon needs to be dosed, the activated carbon in the metering tank 3 is pumped out by the activated carbon dust diaphragm pump 4. The circulating pump 7 sprays the fatty acids into the injector 6 at a high speed, and at the same time, the activated carbon is sucked in. After the activated carbon and the fatty acid raw material are fully mixed in the injector 6, they are externally dosed to the external reaction kettle, thereby realizing the dosing operation of the activated carbon.

[0026] The application uses the dust diaphragm pump and the injector to dose the activated carbon by the pumping and suction assistance mode, which avoids the conventional dosing of the activated carbon on the surface of the liquid material, which is not easy to mix uniformly, and the dust activated carbon is entrained into the tail gas pipeline by the gas, which long-term blocks the pipeline and causes the waste of activated carbon. At the same time, the activated carbon is stored, conveyed and dosed in a closed manner, and does not come into contact with the environment and personnel, which greatly reduces the workload of personnel and the harm to the environment and operating personnel.

Claims

1. An apparatus for automatically adding activated carbon in the production of acyl chloride, characterized in that: It includes a temporary storage tank for holding activated carbon, a metering tank for metering the addition of activated carbon, a mixing vessel for holding fatty acids, and an injector for adding activated carbon to an external reaction vessel. The metering tank is connected to the temporary storage tank via an activated carbon conveyor. A circulation pipe is connected to the bottom of the mixing vessel, and an activated carbon addition pipe is connected to the bottom of the metering tank. The circulation pipe is connected to inlet I of the injector, and the activated carbon addition pipe is connected to inlet II of the injector. The outlet of the injector is connected to a main addition pipe for cooperation with an external reaction vessel. A circulation pump is installed on the circulation pipe, and a dust diaphragm pump is installed on the activated carbon addition pipe. A stirring device is also installed on the mixing vessel.

2. The apparatus for automatically adding activated carbon in the production of acyl chlorides according to claim 1, characterized in that: An exhaust gas emission pipe is also installed on the main injection pipeline, and an exhaust gas emission control valve is installed on the exhaust gas emission pipe.

3. The apparatus for automatically adding activated carbon in the production of acyl chloride according to claim 1, characterized in that: The activated carbon conveyor is inclined, with the lower end of the activated carbon conveyor serving as the input end and connected to the bottom of the temporary storage tank, and the higher end of the activated carbon conveyor serving as the output end and connected to the top of the metering tank.

4. The apparatus for automatically adding activated carbon in the production of acyl chloride according to claim 1 or 3, characterized in that: The activated carbon conveyor is a screw conveyor.

5. The apparatus for automatically adding activated carbon in the production of acyl chloride according to claim 1, characterized in that: A metering control valve is installed at the connection between the metering tank and the activated carbon dosing pipeline, and an activated carbon dosing control valve is installed on the activated carbon dosing pipeline.

6. The apparatus for automatically adding activated carbon in the production of acyl chloride according to claim 1 or 5, characterized in that: A fatty acid dosing control valve is installed in the circulation pipeline.

7. The apparatus for automatically adding activated carbon in the production of acyl chloride according to claim 1, characterized in that: The stirring device includes a stirring shaft with stirring blades and a drive motor for driving the stirring shaft to rotate. The stirring shaft is vertically mounted on the mixing vessel through bearings and bearing seats, and the motor shaft of the drive motor is connected to the stirring shaft through a coupling.

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