Sodium hydrosulfite synthesis production monitoring device

Abstract

The utility model discloses a sodium hydrosulfite synthesis production monitoring device. The utility model relates to the technical field of sodium hydrosulfite production equipment. The monitoring device comprises a Raman spectrometer, a pH detector, a circulating pipeline and a branch pipeline, two ends of the circulating pipeline are communicated with the synthetic reaction kettle, circulating pumps are arranged on the circulating pipeline at intervals, and a probe of the Raman spectrometer is inserted into the circulating pipeline; one end of the branch pipeline is communicated with the circulating pipeline, the other end of the branch pipeline is communicated with the synthetic reaction kettle, and the pH detector is inserted into the branch pipeline. According to the utility model, sodium hydrosulfite mother liquor is pumped out through the circulating pump and then pressurized to enter the synthetic reaction kettle to establish external circulation, modeling is carried out by utilizing the Raman effect of the Raman spectrometer, and sodium thiosulfate spectrum identification is subjected to real-time online detection; meanwhile, the pH detector is used for monitoring the pH value in the production process of the sodium hydrosulfite, so that the labor intensity is reduced, and the influence on the product quality caused by data lag is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium dithionite production equipment, in particular to a monitoring device for sodium dithionite synthesis production. Background Art

[0002] In the synthesis device of the sodium dithionite industry, during the synthesis reaction process, sodium thiosulfate and pH value are the key indicators to be controlled in the sodium dithionite reaction; for the monitoring of sodium thiosulfate, currently in the industry, the content of sodium thiosulfate in the reaction solution is measured by manual sampling and titration. The sampling frequency for measuring sodium thiosulfate is very high, and it is necessary for someone on-site to continuously sample, send samples, conduct chemical analysis, and feedback data. The workload is large, the data is lagged, and it affects the product quality. For the monitoring of pH value, currently in the industry, the pH value in the reaction solution is measured by manual sampling and using pH test paper or a pH meter. The sampling frequency for measuring pH value is very high. When using pH test paper, there are errors when someone on-site continuously samples and observes with the naked eye. When using a pH meter, the data is lagged, which affects the product quality. Content of the Utility Model

[0003] The purpose of the utility model is to propose a monitoring device for sodium dithionite synthesis production in view of the above-mentioned deficiencies of the prior art.

[0004] A monitoring device for sodium dithionite synthesis production of the utility model includes a Raman spectrometer, a pH detector, a circulation pipeline, and a branch pipeline. Both ends of the circulation pipeline are communicated with a synthesis reaction kettle. A circulation pump is arranged at intervals on the circulation pipeline. The probe of the Raman spectrometer is inserted into the circulation pipeline; one end of the branch pipeline is communicated with the circulation pipeline, and the other end is communicated with the synthesis reaction kettle. The pH detector is inserted into the branch pipeline.

[0005] Further, a condenser for cooling the mother liquor is also arranged on the branch pipeline.

[0006] Further, the condenser is externally connected to a circulating water source.

[0007] Further, a sampling port is also arranged on the circulation pipeline, and a valve is arranged on the sampling port.

[0008] Further, an anti-blowing port is also arranged on the circulation pipeline, a valve is arranged on the anti-blowing port, and the anti-blowing port is communicated with an inert gas source.

[0009] Further, a transparent observation window is also arranged on the circulation pipeline.

[0010] Further, valves are arranged on both sections of the circulation pipeline at both ends of the transparent observation window.

[0011] Further, a flushing pipe is also connected to the branch pipeline, and a valve is arranged on the flushing pipe.

[0012] Further, valves are provided at both ends of the branch pipeline.

[0013] Further, valves are provided at both ends of the circulation pipeline.

[0014] In the utility model, the sodium dithionite mother liquor is pumped out by a circulation pump, pressurized and then enters the synthesis reactor to establish an external circulation. The Raman effect of a Raman spectrometer is used for modeling, and the Raman spectrum recognition of sodium thiosulfate is detected in real time online. At the same time, a pH detector is used to monitor the pH value during the production process of sodium dithionite, reducing the labor intensity and reducing the impact on product quality caused by data lag. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a monitoring device for the synthesis production of sodium dithionite of the utility model.

[0016] 1. Raman spectrometer; 2. pH detector; 3. Circulation pipeline; 31. Sampling port; 32. Backflush port; 33. Transparent observation window; 4. Branch pipeline; 5. Synthesis reactor; 6. Condenser; 7. Flushing pipe. Detailed Embodiments

[0017] The following are specific embodiments of the utility model in combination with the drawings, and the technical solutions of the utility model are further described, but the utility model is not limited to these embodiments.

[0018] As Figure 1 shown, a monitoring device for the synthesis production of sodium dithionite of the utility model includes a Raman spectrometer 1, a pH detector 2, a circulation pipeline 3, and a branch pipeline 4. Both ends of the circulation pipeline 3 are connected to a synthesis reactor 5 in a communicating manner. A circulation pump is provided at intervals on the circulation pipeline 3. The probe of the Raman spectrometer 1 is inserted into the circulation pipeline 3. One end of the branch pipeline 4 is connected to the circulation pipeline 3 in a communicating manner, and the other end is connected to the synthesis reactor 5 in a communicating manner. The pH detector 2 is inserted into the branch pipeline 4.

[0019] In the utility model, the sodium dithionite mother liquor is pumped out by a circulation pump, pressurized and then enters the synthesis reactor 5 to establish an external circulation. The Raman effect of the Raman spectrometer 1 is used for modeling, and the Raman spectrum recognition of sodium thiosulfate is detected in real time online. At the same time, the pH detector 2 is used to monitor the pH value during the production process of sodium dithionite, reducing the labor intensity and reducing the impact on product quality caused by data lag.

[0020] A condenser 6 for cooling the mother liquor is further provided on the branch pipeline 4 to prevent the mother liquor from being too hot and having an adverse effect on the pH detector 2. The condenser 6 can cool the mother liquor by connecting to an external circulating water source.

[0021] A sampling port 31 may also be provided on the circulation pipeline 3. A valve is provided on the sampling port 31, and sampling of the mother liquor is achieved through the sampling port 31.

[0022] An anti-blowing port 32 may also be provided on the circulation pipeline 3. A valve is provided on the anti-blowing port 32, and the anti-blowing port 32 is connected to an inert gas source. Since the mother liquor is a suspension and is intermittently generated, it is easy to block the pipeline. After the production is completed, the circulation pipeline 3 is blown with inert gas to prevent the mother liquor from blocking the pipeline.

[0023] A transparent observation window 33 may also be provided on the circulation pipeline 3 to facilitate visual observation of the mother liquor.

[0024] Valves may be provided on both sections of the circulation pipeline 3 at both ends of the transparent observation window 33. This facilitates the control of the mother liquor entering this section of the pipeline.

[0025] A flushing pipe 7 may also be connected to the branch pipeline 4. A valve is provided on the flushing pipe 7, and the branch pipeline 4 is cleaned through the flushing pipe 7.

[0026] To facilitate the control of the pipeline, valves may be provided at both ends of the branch pipeline 4 and both ends of the circulation pipeline 3.

[0027] For those not covered above, the prior art applies.

[0028] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the direction of the present invention or exceed the scope defined by the appended claims. Those skilled in the art should understand that any modifications, equivalent substitutions, improvements, etc. made based on the technical essence of the present invention to the above embodiments should be included within the protection scope of the present invention.

Claims

1. A monitoring device for the synthesis and production of hydrosulfite, characterized in that: The invention comprises a Raman spectrometer (1), a pH detector (2), a circulation pipeline (3), and a branch pipeline (4); both ends of the circulation pipeline (3) are connected to a synthesis reactor (5); a circulation pump is arranged at intervals on the circulation pipeline (3); a probe of the Raman spectrometer (1) is inserted into the circulation pipeline (3); one end of the branch pipeline (4) is connected to the circulation pipeline (3), and the other end is connected to the synthesis reactor (5); the pH detector (2) is inserted into the branch pipeline (4).

2. A monitoring device for the synthesis and production of hydrosulfur powder as claimed in claim 1, characterized in that: The branch pipeline (4) is also provided with a condenser (6) for cooling the mother liquid.

3. A monitoring device for the synthesis and production of hydrosulfur powder as claimed in claim 2, characterized in that: The condenser (6) is externally connected to a circulating water source.

4. A monitoring device for the synthesis and production of hydrosulfur powder as claimed in claim 1, characterized in that: The circulation pipeline (3) is also provided with a sampling port (31), and the sampling port (31) is provided with a valve.

5. The device for monitoring the production of hydrosulfur powder synthesis according to claim 1, characterized in that: The circulation pipeline (3) is also provided with a backflush port (32), the backflush port (32) is provided with a valve, and the backflush port (32) is connected to an inert gas source.

6. A monitoring device for the synthesis and production of hydrosulfur powder as claimed in claim 1, characterized in that: The circulation pipeline (3) is also provided with a transparent observation window (33).

7. A monitoring device for the synthesis and production of hydrosulfur powder as claimed in claim 6, characterized in that: Valves are provided on the circulation pipeline (3) sections at both ends of the transparent observation window (33).

8. The device for monitoring the production of hydrosulfur powder synthesis according to claim 1, characterized in that: The branch pipeline (4) is also connected to a flushing pipe (7), and a valve is provided on the flushing pipe (7).

9. The device for monitoring the production of hydrosulfur powder synthesis according to claim 1, characterized in that: Valves are provided at both ends of the branch pipeline (4).

10. The device for monitoring the production of hydrosulfur powder synthesis according to claim 1, characterized in that: Valves are provided at both ends of the circulation pipeline (3).

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