A continuous glyphosate mixing device

Abstract

This invention discloses a continuous mixed acid device for glyphosate produced via a glycine process, comprising a condensation liquid storage vessel, a static mixer, a first heat exchanger, a mixed acid storage vessel, a first pipeline, a second pipeline, and a first transfer pump. The condensation liquid storage vessel is used to receive and store the condensation liquid. One end of the first pipeline is connected to the outlet of the condensation liquid storage vessel, and the other end of the first pipeline is connected to the first inlet of the static mixer. The first transfer pump is connected to the first pipeline. The second pipeline is connected to the second inlet of the static mixer and is used to receive hydrochloric acid. The outlet of the static mixer is connected to the material inlet of the first heat exchanger, and the material outlet of the first heat exchanger is connected to the mixed acid storage vessel. This invention enables continuous reaction and mixing of the condensation liquid and hydrochloric acid, thereby increasing the production capacity of the mixed acid, and eliminates the need for manual operation, saving labor costs.

Description

Technical Field

[0001] This utility model relates to a continuous mixed acid device for glyphosate using the glycine method. Background Technology

[0002] Currently, the synthesis of glyphosate via the glycine-alkyl ester method mainly involves five steps: synthesis, acid mixing, hydrolysis, crystallization, and drying. In the acid mixing process, the condensation solution needs to be mixed with hydrochloric acid. Existing technologies mostly employ batch-type stirred mixing for acid mixing; for example, Chinese patent CN117510539A uses this method, where the condensation solution and hydrochloric acid are stirred and mixed in a reactor. However, because batch-type stirred mixing is an intermittent process, it requires manual operation, increasing labor costs. Furthermore, each batch requires cyclical operations such as feeding, reaction, and discharging, with pauses between batches, resulting in low production capacity. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a continuous mixed acid device for glyphosate produced by glycine method. It can continuously react and mix the condensation liquid with hydrochloric acid, thereby increasing the production capacity of mixed acid, and does not require manual operation, thus saving labor costs.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a glycine-based glyphosate continuous mixed acid device, comprising a condensation liquid storage tank, a static mixer, a first heat exchanger, a mixed acid liquid storage tank, a first pipeline, a second pipeline, and a first transfer pump;

[0005] The condensation liquid temporary storage vessel is used to receive and store the condensation liquid;

[0006] One end of the first pipeline is connected to the outlet of the condensate storage vessel, and the other end of the first pipeline is connected to the first inlet of the static mixer.

[0007] The first transfer pump is connected to the first pipeline and is used to pump the condensate in the condensate storage vessel to the static mixer;

[0008] The second pipeline is connected to the second inlet of the static mixer, and the second pipeline is used to connect hydrochloric acid to introduce hydrochloric acid into the static mixer;

[0009] The outlet of the static mixer is connected to the material inlet of the first heat exchanger, and the material outlet of the first heat exchanger is connected to the mixed acid temporary storage vessel.

[0010] Furthermore, the glycine-based glyphosate continuous mixing acid device also includes a second transfer pump, which is connected to the second pipeline and is used to pump hydrochloric acid into the second pipeline, thereby allowing the hydrochloric acid to flow into the static mixer.

[0011] Furthermore, the glycine-based glyphosate continuous mixed acid device also includes a first flow meter, a first flow regulating valve, a second flow meter, and a second flow regulating valve;

[0012] Both the first flow meter and the first flow regulating valve are connected in the first pipeline;

[0013] The second flow meter and the second flow regulating valve are both connected in the second pipeline.

[0014] Furthermore, an online hydrochloric acid concentration meter is connected to the second pipeline.

[0015] Furthermore, the glycine-based glyphosate continuous mixed acid device also includes a controller;

[0016] The first flow meter is connected to the controller and is used to send the measured real-time flow information of the condensate in the first pipeline to the controller.

[0017] The second flow meter is connected to the controller and is used to send the measured real-time flow information of hydrochloric acid in the second pipeline to the controller;

[0018] The hydrochloric acid online concentration meter is connected to the controller and is used to send the measured real-time concentration information of hydrochloric acid in the second pipeline to the controller;

[0019] The controller is connected to the first flow regulating valve and the second flow regulating valve respectively, and is used to control the opening degree of the first flow regulating valve and the second flow regulating valve according to the real-time flow rate of the condensate in the first pipeline, the real-time flow rate of hydrochloric acid in the second pipeline, and the real-time concentration of hydrochloric acid in the second pipeline.

[0020] Furthermore, the outlet of the static mixer is connected to a first temperature sensor for detecting the material temperature, and the material outlet of the first heat exchanger is connected to a second temperature sensor for detecting the material temperature.

[0021] Furthermore, the first temperature sensor is connected to the controller and is used to send the measured material temperature information at the outlet of the static mixer to the controller;

[0022] The second temperature sensor is connected to the controller and is used to send the measured material temperature information at the material outlet of the first heat exchanger to the controller.

[0023] The controller is connected to the first transfer pump and the second flow regulating valve respectively, and is used to control the start and stop of the first transfer pump and the opening and closing of the second flow regulating valve according to the material temperature at the outlet of the static mixer and the material temperature at the outlet of the first heat exchanger.

[0024] Furthermore, the glycine-based glyphosate continuous mixed acid device also includes a second heat exchanger. The material inlet of the second heat exchanger is used to connect to the condensation liquid, and the material outlet of the second heat exchanger is connected to the inlet of the condensation liquid temporary storage vessel.

[0025] Furthermore, the glycine-based glyphosate continuous mixed acid device also includes a discharge pump connected to the outlet of the mixed acid temporary storage vessel.

[0026] Furthermore, level gauges are installed in both the condensate storage vessel and the mixed acid storage vessel.

[0027] After adopting the above technical solution, the first transfer pump can continuously pump the condensate from the condensate storage vessel to the static mixer, while hydrochloric acid can continuously flow into the static mixer from the second pipeline. Therefore, the condensate and hydrochloric acid can continuously react and mix in the static mixer to form a mixed acid solution. The mixed acid solution then flows into the first heat exchanger for heat exchange and cooling, and the cooled mixed acid solution flows into the mixed acid storage vessel for storage. Compared with the intermittent stirred mixing in the prior art, the embodiment of this application enables the condensate and hydrochloric acid to react and mix continuously, which greatly improves the production capacity of the mixed acid, helps to ensure the stable operation of subsequent continuous hydrolysis, and does not require manual operation, saving labor costs. In addition, by setting the condensate storage vessel and the mixed acid storage vessel, a certain response time can be reserved for emergencies. Attached Figure Description

[0028] Figure 1 This is a process flow diagram of the glycine-based glyphosate continuous mixed acid device of this utility model;

[0029] In the diagram: 1. Condensation liquid temporary storage vessel; 2. Static mixer; 3. First heat exchanger; 4. Mixed acid temporary storage vessel; 5. First pipeline; 6. Second pipeline; 7. First transfer pump; 8. First flow meter; 9. First flow regulating valve; 10. Second flow meter; 11. Second flow regulating valve; 12. Hydrochloric acid online concentration meter; 13. First temperature sensor; 14. Second temperature sensor; 15. Second heat exchanger; 16. Discharge pump; 17. Cooling water inlet pipeline; 18. Cooling water outlet pipeline. Detailed Implementation

[0030] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0031] like Figure 1 As shown, a glycine-based glyphosate continuous mixed acid device includes a condensation liquid storage tank 1, a static mixer 2, a first heat exchanger 3, a mixed acid liquid storage tank 4, a first pipeline 5, a second pipeline 6, and a first transfer pump 7.

[0032] The condensation liquid temporary storage vessel 1 is used to receive and store the condensation liquid;

[0033] One end of the first pipeline 5 is connected to the outlet of the condensate storage vessel 1, and the other end of the first pipeline 5 is connected to the first inlet of the static mixer 2.

[0034] The first transfer pump 7 is connected to the first pipeline 5 and is used to pump the condensate in the condensate storage tank 1 to the static mixer 2;

[0035] The second pipeline 6 is connected to the second inlet of the static mixer 2, and the second pipeline 6 is used to connect hydrochloric acid to introduce hydrochloric acid into the static mixer 2;

[0036] The outlet of the static mixer 2 is connected to the material inlet of the first heat exchanger 3, and the material outlet of the first heat exchanger 3 is connected to the mixed acid temporary storage vessel 4.

[0037] Specifically, the first transfer pump 7 continuously pumps the condensate from the condensate storage tank 1 to the static mixer 2, while hydrochloric acid continuously flows into the static mixer 2 from the second pipeline 6. Therefore, the condensate and hydrochloric acid can continuously react and mix in the static mixer 2 to form a mixed acid solution. The mixed acid solution then flows into the first heat exchanger 3 for heat exchange and cooling, and the cooled mixed acid solution flows into the mixed acid storage tank 4 for storage. Compared with the intermittent stirred mixing in the prior art, this embodiment allows the condensate and hydrochloric acid to react and mix continuously, greatly improving the mixed acid production capacity, which is beneficial for ensuring the stable operation of subsequent continuous hydrolysis, and eliminates the need for manual operation, saving labor costs. Furthermore, by setting up the condensate storage tank 1 and the mixed acid storage tank 4, a certain response time can be reserved for emergencies.

[0038] like Figure 1 As shown, the glycine-based glyphosate continuous mixed acid device may further include a second transfer pump, which is connected to the second pipeline 6 and is used to pump hydrochloric acid into the second pipeline 6, thereby allowing the hydrochloric acid to flow into the static mixer 2.

[0039] like Figure 1As shown, the glycine-based glyphosate continuous mixed acid device may further include a first flow meter 8, a first flow regulating valve 9, a second flow meter 10, and a second flow regulating valve 11.

[0040] The first flow meter 8 and the first flow regulating valve 9 are both connected in the first pipeline 5;

[0041] The second flow meter 10 and the second flow regulating valve 11 are both connected in the second pipeline 6.

[0042] like Figure 1 As shown, an online hydrochloric acid concentration meter 12 can be connected to the second pipeline 6.

[0043] Specifically, the glycine-based glyphosate continuous mixed acid device may also include a controller;

[0044] The first flow meter 8 is connected to the controller and is used to send the measured real-time flow information of the condensate in the first pipeline 5 to the controller.

[0045] The second flow meter 10 is connected to the controller and is used to send the measured real-time flow information of hydrochloric acid in the second pipeline 6 to the controller;

[0046] The hydrochloric acid online concentration meter 12 is connected to the controller and is used to send the measured real-time concentration information of hydrochloric acid in the second pipeline 6 to the controller;

[0047] The controller is connected to the first flow regulating valve 9 and the second flow regulating valve 11 respectively, and is used to control the opening of the first flow regulating valve 9 and the second flow regulating valve 11 according to the real-time flow rate of the condensate in the first pipeline 5, the real-time flow rate of hydrochloric acid in the second pipeline 6, and the real-time concentration of hydrochloric acid in the second pipeline 6, so as to maintain the flow rate of the condensate in the first pipeline 5 and the converted hydrochloric acid flow rate in the second pipeline 6 within a certain ratio range. For example, if the required hydrochloric acid concentration is C0, and the hydrochloric acid concentration measured by the online hydrochloric acid concentration meter 12 is C1, and the hydrochloric acid flow rate measured by the second flow meter 10 is Q, then the converted hydrochloric acid flow rate is Q × (C1 / C0). The controller needs to control the opening of the first flow regulating valve 9 and the second flow regulating valve 11 to maintain the flow rate of the condensate and the converted hydrochloric acid flow rate within a predetermined small ratio range.

[0048] like Figure 1 As shown, the outlet of the static mixer 2 is connected to a first temperature sensor 13 for detecting the material temperature, and the material outlet of the first heat exchanger 3 is connected to a second temperature sensor 14 for detecting the material temperature; wherein, the material is a mixed acid solution formed by mixing condensate and hydrochloric acid.

[0049] Specifically, the first temperature sensor 13 is connected to the controller and is used to send the measured material temperature information at the outlet of the static mixer 2 to the controller;

[0050] The second temperature sensor 14 is connected to the controller and is used to send the measured material temperature information at the material outlet of the first heat exchanger 3 to the controller.

[0051] The controller is connected to the first transfer pump 7 and the second flow regulating valve 11 respectively, and is used to control the start and stop of the first transfer pump 7 and the opening and closing of the second flow regulating valve 11 based on the material temperature at the outlet of the static mixer 2 and the material temperature at the outlet of the first heat exchanger 3. Specifically, when the material temperature at the outlet of the static mixer 2 is higher than a first set value, the controller will control the first transfer pump 7 to stop and control the second flow regulating valve 11 to close. When the difference between the material temperature at the outlet of the first heat exchanger 3 and the material temperature at the outlet of the static mixer 2 is less than a second set value, the controller will also control the first transfer pump 7 to stop and control the second flow regulating valve 11 to close.

[0052] like Figure 1 As shown, the glycine-based glyphosate continuous mixed acid apparatus may further include a second heat exchanger 15. The material inlet of the second heat exchanger 15 is used to receive the condensation liquid, and the material outlet of the second heat exchanger 15 is connected to the inlet of the condensation liquid storage vessel 1. This allows the condensation liquid from the synthesis reactor to be cooled by heat exchange in the second heat exchanger 15 before flowing into the condensation liquid storage vessel 1. The second heat exchanger 15 reduces the temperature of the condensation liquid entering the condensation liquid storage vessel 1, thereby reducing the temperature of the condensation liquid entering the static mixer 2. This, in turn, reduces the degree of mixed acid reaction in the static mixer 2, resulting in a reduction in the amount of gas generated during the mixed acid process and thus reducing the pressure on the pipeline. In this embodiment, the first heat exchanger 3 can be a shell-and-tube heat exchanger, and the second heat exchanger 15 can be a plate heat exchanger.

[0053] like Figure 1 As shown, the glycine-based glyphosate continuous mixed acid device may further include a discharge pump 16 connected to the outlet of the mixed acid temporary storage vessel 4, the discharge pump 16 being used to pump the mixed acid stored in the mixed acid temporary storage vessel 4 to the subsequent continuous hydrolysis process.

[0054] In this embodiment, level gauges can be installed in the condensate storage tank 1 and the mixed acid storage tank 4, and cooling water inlet pipe 17 and cooling water outlet pipe 18 can be connected to the condensate storage tank 1, the mixed acid storage tank 4, the static mixer 2, the first heat exchanger 3 and the second heat exchanger 15, respectively.

[0055] In summary, the first transfer pump 7 can continuously pump the condensate from the condensate storage tank 1 to the static mixer 2, while hydrochloric acid can continuously flow into the static mixer 2 from the second pipeline 6. Therefore, the condensate and hydrochloric acid can continuously react and mix in the static mixer 2 to form a mixed acid solution. The mixed acid solution then flows into the first heat exchanger 3 for heat exchange and cooling, and the cooled mixed acid solution flows into the mixed acid storage tank 4 for storage. Compared with the intermittent stirred mixing in the prior art, the embodiment of this application enables the condensate and hydrochloric acid to react and mix continuously, which greatly improves the production capacity of the mixed acid, helps to ensure the stable operation of subsequent continuous hydrolysis, and does not require manual operation, saving labor costs. In addition, by setting the condensate storage tank 1 and the mixed acid storage tank 4, a certain response time can be reserved for emergencies.

[0056] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A continuous glyphosate mixed acid device by glycine method, characterized in that, It includes a condensate storage tank (1), a static mixer (2), a first heat exchanger (3), a mixed acid storage tank (4), a first pipeline (5), a second pipeline (6), and a first transfer pump (7). The condensate storage vessel (1) is used to receive and store the condensate; One end of the first pipeline (5) is connected to the outlet of the condensate storage vessel (1), and the other end of the first pipeline (5) is connected to the first inlet of the static mixer (2). The first transfer pump (7) is connected to the first pipeline (5) and is used to pump the condensate in the condensate storage tank (1) to the static mixer (2); The second pipeline (6) is connected to the second inlet of the static mixer (2), and the second pipeline (6) is used to connect hydrochloric acid to introduce hydrochloric acid into the static mixer (2); The outlet of the static mixer (2) is connected to the material inlet of the first heat exchanger (3), and the material outlet of the first heat exchanger (3) is connected to the mixed acid temporary storage vessel (4).

2. The continuous glyphosate acid mixing device according to claim 1, characterized in that, It also includes a second transfer pump, which is connected to the second pipeline (6) and is used to pump hydrochloric acid into the second pipeline (6) so that the hydrochloric acid flows into the static mixer (2).

3. The continuous glyphosate acid mixing device of claim 1, wherein, It also includes a first flow meter (8), a first flow regulating valve (9), a second flow meter (10), and a second flow regulating valve (11); The first flow meter (8) and the first flow regulating valve (9) are both connected in the first pipeline (5); The second flow meter (10) and the second flow regulating valve (11) are both connected in the second pipeline (6).

4. The continuous glyphosate acid mixing device according to claim 3, characterized in that, The second pipeline (6) is connected to an online hydrochloric acid concentration meter (12).

5. The continuous glyphosate acid mixing device according to claim 4, characterized in that, It also includes the controller; The first flow meter (8) is connected to the controller and is used to send the measured real-time flow information of the condensate in the first pipeline (5) to the controller; The second flow meter (10) is connected to the controller and is used to send the measured real-time flow information of hydrochloric acid in the second pipeline (6) to the controller; The hydrochloric acid online concentration meter (12) is connected to the controller and is used to send the measured real-time concentration information of hydrochloric acid in the second pipeline (6) to the controller; The controller is connected to the first flow regulating valve (9) and the second flow regulating valve (11) respectively and is used to control the opening degree of the first flow regulating valve (9) and the second flow regulating valve (11) according to the real-time flow rate of the condensate in the first pipeline (5), the real-time flow rate of hydrochloric acid in the second pipeline (6), and the real-time concentration of hydrochloric acid in the second pipeline (6).

6. The continuous glyphosate acid mixing device of claim 1, wherein, The outlet of the static mixer (2) is connected to a first temperature sensor (13) for detecting the material temperature, and the material outlet of the first heat exchanger (3) is connected to a second temperature sensor (14) for detecting the material temperature.

7. The continuous glyphosate acid mixing apparatus of claim 6, wherein the first and second tanks are connected to each other by a pipe. It also includes a controller and a second flow regulating valve (11), which is connected in the second pipeline (6); The first temperature sensor (13) is connected to the controller and is used to send the measured material temperature information at the outlet of the static mixer (2) to the controller; The second temperature sensor (14) is connected to the controller and is used to send the measured material temperature information of the material outlet of the first heat exchanger (3) to the controller. The controller is connected to the first transfer pump (7) and the second flow regulating valve (11) respectively and is used to control the start and stop of the first transfer pump (7) and the opening and closing of the second flow regulating valve (11) according to the material temperature at the outlet of the static mixer (2) and the material temperature at the outlet of the first heat exchanger (3).

8. The continuous glyphosate acid mixing device of claim 1, wherein, It also includes a second heat exchanger (15), the material inlet of which is used to receive the condensation liquid, and the material outlet of the second heat exchanger (15) is connected to the inlet of the condensation liquid storage vessel (1).

9. The continuous glyphosate acid mixing device of claim 1, wherein, It also includes a discharge pump (16) connected to the outlet of the mixed acid temporary storage vessel (4).

10. The continuous glyphosate acid mixing device of claim 1, wherein, The condensate storage vessel (1) and the mixed acid storage vessel (4) are respectively equipped with level gauges.

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