CN214611549U - Thermal phosphoric acid production system capable of monitoring hydration degree - Google Patents
Thermal phosphoric acid production system capable of monitoring hydration degree Download PDFInfo
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- CN214611549U CN214611549U CN202120468711.7U CN202120468711U CN214611549U CN 214611549 U CN214611549 U CN 214611549U CN 202120468711 U CN202120468711 U CN 202120468711U CN 214611549 U CN214611549 U CN 214611549U
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Abstract
The utility model discloses a thermal phosphoric acid production system capable of monitoring hydration degree, which belongs to the technical field of phosphorus chemical industry. The system comprises a control room, a post-treatment device, and a phosphorus melting device, a combustion tower, a primary hydration device and a secondary hydration device which are sequentially connected, wherein the primary hydration device comprises a hydration tower, a circulation pool, a circulation pump and a heat exchanger which are sequentially connected end to end through a circulation pipeline, an electric cabinet is arranged in the control room, and the secondary hydration device is connected with the post-treatment device; an outlet of the circulating pump is provided with an electric control three-way valve which is divided into two paths to be output, wherein one path is output to the hydration tower, and the other path is output to the secondary hydration device; an ammeter is arranged on a power supply line of the circulating pump, an electronic flowmeter for detecting the flow of the circulating pump is arranged on the circulating pipeline, and an electronic thermometer is arranged on a hot water inlet of the heat exchanger; an ammeter, a control structure of the circulating pump, a display structure of the electronic flowmeter, a display structure of the electronic thermometer and a control structure of the electric control three-way valve are arranged in the electric cabinet.
Description
Technical Field
The utility model belongs to the technical field of the phosphorus chemical industry, in particular to can monitor hot process phosphoric acid production system of hydration degree.
Background
Phosphoric acid, polyphosphoric acid, metaphosphoric acid, and the like can be obtained by reacting phosphorus pentoxide with water, and various products can be obtained by hydration of phosphorus pentoxide with water.
Patent as application number CN201420317868.X discloses a polyphosphoric acid production system, includes the refined phosphorus melting groove, deposit phosphorus melting groove, combustion tower, one-level hydration structure, second grade hydration structure, dearsenification reation kettle, subsider, sheet frame filter, takes off and inhale reation kettle, filter and the finished product storage tank that connect gradually through the pipeline, the exhanst gas outlet of second grade hydration structure even has exhaust-gas treatment system, one-level hydration structure and second grade hydration structure all are the self-loopa structure of constituteing by pipeline, hydration tower, shell and tube heat exchanger, circulating pump and circulating bath, be equipped with the detection mouth on the circulating bath, the circulating pump is connected with the electric cabinet electricity.
In the actual production process, the hydration degree needs to be controlled at both the primary hydration structure and the secondary hydration structure (especially at the primary hydration structure); the prior art generally detects the hydration level by sampling on a sampling port, which is time-consuming and labor-consuming.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a thermal phosphoric acid production system capable of monitoring hydration level, and the applicant has found that the hydration level can be approximately obtained by detecting the current level of a circulating pump at the same flow rate according to the viscosity of different phosphorus pentoxide hydrates, and the hydration level can be approximately obtained by summarizing the comparison relationship between the viscosity, the temperature and the hydration level because the viscosity is also related to the temperature. The technical scheme is as follows:
the embodiment of the utility model provides a can monitor hot method phosphoric acid production system of hydration degree, this system includes control room, aftertreatment device and melts phosphorus device, combustion tower, one-level hydration device and second grade hydration device that connect gradually through the pipeline, the one-level hydration device includes hydration tower, circulation pond, circulating pump and the heat exchanger that connects gradually end to end through the circulating line, be equipped with the electric cabinet in the control room, second grade hydration device is connected with aftertreatment device through the pipeline; an outlet of the circulating pump is provided with an electric control three-way valve, the electric control three-way valve is output in two ways, one way is output to the hydration tower, and the other way is output to the post-treatment device; an ammeter is arranged on a power supply line of the circulating pump, an electronic flowmeter for detecting the flow of the circulating pump is arranged on the circulating pipeline, and an electronic thermometer is arranged on a hot water inlet of the heat exchanger; an ammeter, a control structure of the circulating pump, a display structure of the electronic flowmeter, a display structure of the electronic thermometer and a control structure of the electric control three-way valve are arranged in the electric control box.
Specifically, the embodiment of the utility model provides an in the circulating pump locates in the circulation pond, the electron flowmeter is located on the hot water import or the cold water export of heat exchanger.
Preferably, a comparison table printed with comparison relations among current, temperature and hydration degree is pasted beside the electric cabinet in the embodiment of the present invention.
Wherein, the embodiment of the utility model provides an in the heat exchanger be plate heat exchanger.
Wherein, the embodiment of the utility model provides an in the embodiment of the display structure of electronic flowmeter and electronic thermometer's display structure be the digital display screen of LED.
The embodiment of the utility model provides a beneficial effect that technical scheme brought is: the embodiment of the utility model provides a can monitor hot method phosphoric acid production system of hydration degree, the applicant finds that the viscosity of different phosphorus pentoxide hydrates is different, can roughly obtain the hydration degree through the electric current size that detects the circulating pump under the same flow, simultaneously because viscosity also is relevant with the temperature, then can roughly obtain the hydration degree through the contrast relation of the viscosity, temperature and the hydration degree of summarizing. Time and labor are saved, and the hydration degree can be obtained in time.
Drawings
FIG. 1 is a schematic block diagram of a thermal phosphoric acid production system capable of monitoring hydration levels according to an embodiment of the present invention;
fig. 2 is a layout diagram in an electric cabinet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1-2, the embodiment of the utility model provides a can monitor hot method phosphoric acid production system of hydration degree, this system includes the control room (be used for the operative employee to control entire system in it), aftertreatment device (if remove arsenic or filter etc.) and the phosphorus melting device (specifically be the phosphorus melting groove that connects gradually through pipeline (gas passage) for melting yellow phosphorus, the combustion tower (be used for burning yellow phosphorus and obtain phosphorus pentoxide), the one-level hydration device (be used for reacting phosphorus pentoxide with water, it is main), second grade hydration device (be used for reacting phosphorus pentoxide (a small amount) with water) and tail gas processing apparatus (be connected with second grade hydration device's tail gas outlet), etc.. Wherein, the first-stage hydration device comprises a hydration tower (connected with a combustion tower), a circulation pool (positioned at the bottom of the hydration tower), a circulation pump (used for forced circulation), a heat exchanger (used for reducing the temperature of a circulation liquid) and the like which are sequentially connected end to end through a circulation pipeline. Wherein, be equipped with the electric cabinet in the control room and be used for controlling entire system. The first-stage hydration device and the second-stage hydration device (output is carried out once after a long time and basically does not need real-time monitoring) are connected with the post-treatment device through pipelines and used for outputting the phosphoric acid meeting the requirements, and the structure is basically the same as that of the existing thermal phosphoric acid production system, except that:
an outlet (connected with an inlet of the electric control three-way valve) of the circulating pump in the embodiment is provided with the electric control three-way valve, the electric control three-way valve is output in two paths, one path is output to the hydration tower (not meeting the hydration requirement), and the other path is output to the post-treatment device (meeting the hydration requirement). An ammeter is arranged on a power supply line of the circulating pump and used for detecting the power supply current of the circulating pump, an electronic flowmeter used for detecting the flow of the circulating pump is arranged on the circulating pipeline, and an electronic thermometer used for detecting the temperature of circulating liquid is arranged on a hot water inlet of the heat exchanger. An ammeter, a control structure of the circulating pump (electrically connected with the circulating pump or arranged on a power supply line of the circulating pump), a display structure of the electronic flowmeter (electrically connected with the electronic flowmeter), a display structure of the electronic thermometer (electrically connected with the electronic thermometer) and a control structure of the electric control three-way valve (electrically connected with the electric control three-way valve) are arranged in the electric cabinet. The control structure in this embodiment is set according to actual needs, and may specifically be a key, a knob, or a toggle switch. Wherein, the overall arrangement of each structure in the electric cabinet sets up according to actual need. In this embodiment, each of the electrical elements has a conventional structure.
Specifically, the embodiment of the utility model provides an in the circulating pump locates in the circulation pond, the electron flowmeter is located on the hot water import or the cold water export of heat exchanger.
Preferably, a comparison table (when the flow rate is constant or a predetermined value) printed with a comparison relationship between the current, the temperature and the hydration degree is adhered beside the electric cabinet in the embodiment of the present invention, and the comparison table (the non-linear comparison) is arranged according to long-term practice.
Wherein, the embodiment of the utility model provides an in the heat exchanger be plate heat exchanger.
Wherein, the embodiment of the utility model provides an in the embodiment of the display structure of electronic flowmeter and electronic thermometer be LED digital display screen (simple structure). Of course, other display configurations are possible.
Through production practice, the hydration degree obtained by the system is not greatly different from the hydration degree actually measured by sampling, and the error can be accepted in production.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The thermal phosphoric acid production system capable of monitoring the hydration degree comprises a control room, a post-processing device, a phosphorus melting device, a combustion tower, a primary hydration device and a secondary hydration device which are sequentially connected through a pipeline, wherein the primary hydration device comprises a hydration tower, a circulation tank, a circulation pump and a heat exchanger which are sequentially connected end to end through a circulation pipeline, an electric cabinet is arranged in the control room, and the secondary hydration device is connected with the post-processing device through a pipeline; it is characterized in that the preparation method is characterized in that,
an outlet of the circulating pump is provided with an electric control three-way valve, the electric control three-way valve is output in two ways, one way is output to the hydration tower, and the other way is output to the post-treatment device; an ammeter is arranged on a power supply line of the circulating pump, an electronic flowmeter for detecting the flow of the circulating pump is arranged on the circulating pipeline, and an electronic thermometer is arranged on a hot water inlet of the heat exchanger; an ammeter, a control structure of the circulating pump, a display structure of the electronic flowmeter, a display structure of the electronic thermometer and a control structure of the electric control three-way valve are arranged in the electric control box.
2. The system for producing hot phosphoric acid with the monitored hydration degree according to claim 1, wherein the circulating pump is arranged in a circulating pool, and the electronic flowmeter is arranged on a hot water inlet or a cold water outlet of the heat exchanger.
3. The system for producing hot phosphoric acid with the capability of monitoring the hydration degree according to claim 1, wherein a comparison table printed with the comparison relationship among the current, the temperature and the hydration degree is pasted beside the electric cabinet.
4. The system for thermal phosphoric acid production capable of monitoring hydration level of claim 1, wherein the heat exchanger is a plate heat exchanger.
5. The system for producing hot phosphoric acid with the hydration degree monitoring function according to claim 1, wherein the display structure of the electronic flowmeter and the display structure of the electronic thermometer are both LED digital display screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468711.7U CN214611549U (en) | 2021-03-04 | 2021-03-04 | Thermal phosphoric acid production system capable of monitoring hydration degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468711.7U CN214611549U (en) | 2021-03-04 | 2021-03-04 | Thermal phosphoric acid production system capable of monitoring hydration degree |
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| Publication Number | Publication Date |
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| CN214611549U true CN214611549U (en) | 2021-11-05 |
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| CN202120468711.7U Active CN214611549U (en) | 2021-03-04 | 2021-03-04 | Thermal phosphoric acid production system capable of monitoring hydration degree |
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2021
- 2021-03-04 CN CN202120468711.7U patent/CN214611549U/en active Active
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