Synthetic production system of ammonium benzoate
By adopting a gravity gradient self-flow system in the ammonium benzoate production system, the problems of long pipelines, large pump usage and high power consumption in the prior art are solved, and efficient continuous production with less energy consumption and low noise are achieved.
Patent Information
- Application Number
- CN202422016201.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing ammonium benzoate production methods have long pipelines, large pump usage, high power consumption and large amount of materials left in the pipeline, resulting in unfavorable production management and risk of on-site pollution.
The gravity gradient self-flow system is adopted to reduce the use of centrifugal pumps and enter the reactor through the gravity self-flow raw materials, achieving efficient continuous production with less energy consumption and low noise.
Through the gravity self-flow system, energy consumption and noise are significantly reduced, production efficiency is improved, labor intensity is reduced, and efficient continuous production is achieved.
Smart Images
Figure CN222998782U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production, and particularly relates to a synthesis production system of ammonium benzoate. Background Art
[0002] The molecular formula of ammonium benzoate is C7H9NO2. It appears as colorless flaky crystals, is soluble in water, alcohol and glycerol. It can be used as a chemical analysis reagent, for the production of electrolytic capacitors and pharmaceuticals, and as a preservative and analysis reagent. The production method of ammonium benzoate is usually obtained by reacting benzoic acid and ammonia water under appropriate conditions. For example, 100 g of benzoic acid is dissolved in 80 mL of 20% ammonia water, heated, and then the solution is left to cool to precipitate crystals. After suction filtration, it is dried between filter papers, and the purity is about 99%.
[0003] The disadvantages of this production method are that the pipeline is long, the amount of pumps used is large, the power consumption is high, and the amount of remaining materials in the pipeline is large, which is not conducive to production management. There is also the problem of on-site pollution caused by accidental leakage of the pipeline. Content of the Utility Model
[0004] The purpose of the utility model is to provide a synthesis production system of ammonium benzoate, which overcomes the deficiencies of the prior art, adopts a gravity gradient self-flow system, reduces the amount of centrifugal pumps used in the system, enables raw materials to flow into the reaction kettle by gravity, has less energy consumption and low noise, and realizes efficient continuous production.
[0005] To achieve the above purpose, the utility model is realized through the following technical solutions:
[0006] A synthesis production system of ammonium benzoate includes a benzoic acid tank, an ammonia water tank, a reaction kettle and a vacuum filter. The benzoic acid tank and the ammonia water tank are respectively connected to the reaction kettle through pipelines. The output port of the reaction kettle is connected to the inlet of the vacuum filter through a pipeline. Its characteristics are that the system is arranged on a multi-layer framework. The benzoic acid tank and the ammonia water tank are arranged on the top layer, the reaction kettle is located on the next layer, and the vacuum filter is located on the second layer from the bottom. The pipelines between the equipment on each layer are gravity self-flow pipelines, and automatic control valves are arranged on the pipelines; Flow meters are respectively arranged on the connecting pipes between the benzoic acid tank and the ammonia water tank and the reaction kettle. The connecting pipes are N-shaped elbows, and the flow meters are arranged on the pipe segments where the fluid direction is upward.
[0007] Further, the vacuum filter is a rubber belt type vacuum filter or a disc type vacuum ceramic filter.
[0008] Further, the automatic control valve is an electric valve or a pneumatic valve.
[0009] Further, the liquid outlet of the vacuum filter is connected to a receiving tank through a pipeline, and the bottom of the receiving tank is connected to the feed inlet of the benzoic acid tank through a return pipe, and a centrifugal pump is arranged on the return pipe.
[0010] Further, the reactor is a double-layer glass reactor with an internal stirrer.
[0011] Further, the interlayer of the reactor is connected to a steam pipe and a cooling water pipe.
[0012] Further, multiple synthesis production systems are controlled by one control system to achieve continuous automated production.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] 1) By adopting a gravity gradient self-flow system, the usage amount of centrifugal pumps in the system is greatly reduced. The raw materials flow into the reactor by gravity, and the product after reaction flows into the vacuum filter by gravity, greatly reducing energy consumption and having low noise.
[0015] 2) Multiple synthesis production systems can be controlled by one control system, with a high degree of automation, reducing labor intensity and achieving efficient continuous production. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a schematic structural diagram of an embodiment of the present utility model.
[0017] In the figure: 1 - benzoic acid tank, 2 - ammonia water tank, 3 - reactor, 4 - return pipe, 5 - vacuum filter, 6 - frame, 7 - automatic control valve, 8 - connecting pipe, 9 - flowmeter, 10 - receiving tank, 11 - centrifugal pump, 12 - steam pipe, 13 - control system, 14 - cooling water pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.
[0019] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the specific embodiments required for use in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other specific embodiments can be obtained based on these specific embodiments.
[0020] Generally, the components of the embodiments of the present utility model described and shown in the specific embodiments here can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the specific embodiments is not intended to limit the scope of the present utility model claimed, but only represents the selected embodiments of the present utility model.
[0021] SeeFigure 1 , which is a schematic structural diagram of an embodiment of a synthesis production system for ammonium benzoate of the present utility model, includes a benzoic acid tank 1 (filled with benzoic acid or a saturated solution of ammonium benzoate), an ammonia water tank 2, a reaction kettle 3, and a vacuum filter 5. The benzoic acid tank 1 and the ammonia water tank 2 are respectively connected to the reaction kettle 3 through pipelines. The output port of the reaction kettle 3 is connected to the inlet of the vacuum filter 5 through a pipeline. The system is arranged on a multi-layer frame 6. The benzoic acid tank 1 and the ammonia water tank 2 are arranged on the top layer, the reaction kettle 3 is located on the next layer, and the vacuum filter 5 is located on the second lower layer. The pipelines between the equipment on each layer are gravity flow pipelines, and automatic control valves 7 are provided on the pipelines. The automatic control valves 7 are electric valves or pneumatic valves and can be remotely controlled to open and close through a control system.
[0022] Flow meters 9 are respectively provided on the connecting pipes 8 between the benzoic acid tank 1 and the ammonia water tank 2 and the reaction kettle 3. The connecting pipe 8 is an N-shaped elbow pipe, and the flow meter 9 is arranged on the pipe section with the fluid direction upward.
[0023] In the embodiment, the reaction kettle 3 is a double-layer glass reaction kettle with a stirrer inside. The raw materials are placed in the inner layer for stirring reaction. The interlayer can be connected to a steam pipe 12 and a cooling water pipe 14. The temperature of the materials in the reaction kettle is adjusted through the steam pipe and the cooling water pipe to meet the requirements of the reaction process parameters: at 75 - 80 °C, the reaction time is 0.5 h. The vacuum filter 5 is used to separate the reaction mixture, and the separated solid is the product.
[0024] The vacuum filter 5 is a rubber belt type vacuum filter or a disc type vacuum ceramic filter. The liquid outlet of the vacuum filter 5 is connected to a receiving tank 10 through a pipeline. The receiving tank 10 can be connected to the inlet of the benzoic acid tank 1 through a return pipe 4, and a centrifugal pump 11 is provided on the return pipe. The liquid in the receiving tank 10 is a saturated ammonium benzoate solution and can be recycled, which can reduce the consumption of benzoic acid and improve the synthesis efficiency at the same time.
[0025] A control system 13 can control multiple synthesis production systems of the present utility model to achieve continuous automated production. During production, the control system opens the discharge valves of the benzoic acid tank 1 and the ammonia water tank 2. The two raw materials after metering enter the reaction kettle. The reaction kettle starts to stir and heat, and is kept warm within the reaction temperature range. After reacting for 0.5 h. After the synthesis reaction is completed, cooling water is passed through the interlayer of the reaction kettle to cool the reaction kettle to room temperature, and the reactants are cooled to precipitate solid ammonium benzoate. Open the bottom outlet of the reaction kettle 3 to discharge the reaction mixture into the vacuum filter. The discharging speed of the reaction mixture is synchronized with the normal processing speed of the vacuum filter until all separation is completed, and the next production cycle starts. The feeding and discharging in the whole production process rely on gravity flow, without using or using very little vacuum pumps, and the energy consumption is 30% of the original.
[0026] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.
Claims
1. A synthetic production system for ammonium benzoate, comprising a benzoic acid tank, an ammonia water tank, a reactor and a vacuum filter, wherein the benzoic acid tank and the ammonia water tank are connected to the reactor through pipelines, and the output port of the reactor is connected to the inlet of the vacuum filter through a pipeline, characterized in that: The system is arranged on a multi-layer frame, the benzoic acid tank and the ammonia water tank are arranged on the top layer, the reactor is located on the next layer, the vacuum filter is located on the lower two layers, and the pipelines between the equipment on each layer are gravity self-flow pipelines, and automatic control valves are arranged on the pipelines; flow meters are respectively arranged on the connecting pipes between the benzoic acid tank and the ammonia water tank and the reactor, and the connecting pipes are N-shaped elbows, and the flow meters are arranged on the pipe sections where the fluid direction is upward.
2. A synthetic production system for ammonium benzoate according to claim 1, characterized in that, The vacuum filter is a rubber belt vacuum filter or a disc vacuum ceramic filter.
3. A synthetic production system for ammonium benzoate according to claim 1, characterized in that, The automatic control valve is an electric valve or a pneumatic valve.
4. A synthetic production system for ammonium benzoate according to claim 1, characterized in that: The liquid outlet of the vacuum filter is connected to the receiving tank via a pipeline, the bottom of the receiving tank is connected to the feed port of the benzoic acid tank via a return pipe, and a centrifugal pump is arranged on the return pipe.
5. A synthetic production system for ammonium benzoate according to claim 1, characterized in that: The reactor is a double-layer glass reactor with a stirrer.
6. A synthetic production system for ammonium benzoate according to claim 5, characterized in that: The interlayer of the reactor is connected to a steam pipe and a cooling water pipe.
7. A synthetic production system for ammonium benzoate according to claim 1, characterized in that: Multiple synthesis production systems are controlled by one control system to achieve continuous automated production.