Chlorination process titanium dioxide washing online detection device

Abstract

The utility model relates to a chlorination process titanium dioxide washing on-line detection device in the technical field of on-line detection. The chlorination process titanium dioxide washing on-line detection device comprises a filter press, a feeding pipe, a water inlet pipe and a water return pipe are arranged on the filter press, a feeding valve is arranged on the feeding pipe, a water inlet valve is arranged on the water inlet pipe, and a water return valve is arranged on the water return pipe; the water return pipe between the water return valve and the water return port is connected with a flow cell, a liquid inlet of the flow cell is communicated with the water return pipe through a first pipeline, the first pipeline is provided with an automatic sampling valve, a liquid outlet of the flow cell is higher than the liquid inlet, the liquid outlet is communicated with the water return pipe through a second pipeline, and the top of the flow cell is provided with a detection instrument. A detection probe of the detection instrument extends into the flow cell, the bottom of the flow cell is provided with a flushing port, the flushing port is connected with the water inlet pipe through a flushing pipeline, and the flushing pipeline is provided with a flushing valve. The negative pressure of the water return pipe is fully utilized, automatic sampling and flushing can be realized, the stability of the system is improved, the instrument loss is reduced, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the online detection technical field, concretely relates to a chlorination method titanium dioxide washing online detection device. BACKGROUND

[0002] Chlorination method titanium dioxide production process all need to use dark current board frame diaphragm filter press to filter and wash the soluble salt in titanium dioxide slurry, finally with detection instrument detects the conductivity (or resistivity) and PH of filtrate to confirm that washing reaches the end point. At present, there are two detection methods, which are offline detection and online detection. Two kinds of detection methods are all from the sampling of backwater pipe, use conductivity meter and pH meter to detect water quality, but all face the problem of backwater pipe negative pressure, sampling difficulty, therefore, offline method often needs to close backwater valve, makes backwater pipeline to be positive pressure through pressure retention, but this method is easy to cause spatter, causes personal injury, and under the condition of pressure retention, influences equipment operation, sampling is instantaneous sample, poor representativeness. And online detection usually increases a larger gas-liquid separator, makes backwater enter the gas-liquid separator first, enters backwater pipe through overflow, carries out online detection data in the process of entering backwater pipe, this method not only causes non-condensable gas to volatilize to the site, even liquid spatters to the site, corrodes equipment, influences production, and also needs to occupy a large amount of space, causes big burden to production maintenance. In addition, the online detection method, the probe of instrument is immersed in high concentration liquid for a long time, and the probe is easy to be damaged. Therefore, a chlorination method titanium dioxide washing online detection device is needed to solve the above technical problems. SUMMARY

[0003] In view of the above defects in the prior art, the utility model provides a chlorination method titanium dioxide washing online detection device, which comprises a filter press, a feed inlet, a water inlet and a backwater outlet are arranged on the filter press, the feed inlet, the water inlet and the backwater outlet are respectively connected with a feed pipe, a water inlet pipe and a backwater pipe, a feed valve is arranged on the feed pipe, a water inlet valve is arranged on the water inlet pipe, and a backwater valve is arranged on the backwater pipe; a flow cell is connected to the backwater pipe between the backwater valve and the backwater outlet, the liquid inlet of the flow cell is communicated with the backwater pipe through a pipeline one, an automatic sampling valve is arranged on the pipeline one, the liquid outlet of the flow cell is higher than the liquid inlet, the liquid outlet is communicated with the backwater pipe through a pipeline two, a detection instrument is arranged on the top of the flow cell, the detection instrument can be a conductivity meter or a pH meter, the detection probe of the detection instrument extends into the flow cell, the position of the detection probe is lower than the liquid outlet, a flushing port is arranged on the bottom of the flow cell, the flushing port is connected with the water inlet pipe through a flushing pipeline, and a flushing valve is arranged on the flushing pipeline.

[0004] Preferably, the backwater pipe comprises a backwater main pipe and a plurality of backwater branch pipes, one end of the backwater main pipe is communicated with the backwater outlet through a pipe one, the other end of the backwater main pipe is communicated with the plurality of backwater branch pipes, the pipe one is communicated with the backwater main pipe, and the pipe two is communicated with the backwater branch pipe.

[0005] Preferably, a plurality of backwater valves are arranged, and each backwater valve is arranged on the corresponding backwater branch pipe, and the pipe two is communicated with the backwater branch pipe behind the backwater valve.

[0006] Preferably, a manual sampling valve one is further arranged on one of the backwater branch pipes, so that sampling is facilitated, and offline detection is compared with online detection.

[0007] Preferably, a manual sampling valve two is further arranged on the flow cell.

[0008] The automatic sampling valve, the water inlet valve, the backwater valve, the feeding valve and the flushing valve are electric valves.

[0009] The utility model also includes other components capable of enabling the chlorination method titanium dioxide water washing online detection device to be normally used, such as the control component of the automatic sampling valve, the control component of the detection instrument, the control component of the flushing valve, the control component of the backwater valve, the control component of the feeding valve, the control component of the water inlet valve and the like are conventional technical means in the field. In addition, the devices or components not limited in the utility model, such as the detection instrument, the automatic sampling valve, the backwater valve, the feeding valve, the water inlet valve, the flushing valve, the conductivity meter, the ph meter and the like all adopt conventional technical means in the field and conventional equipment in the field.

[0010] Working principle: in the production process, the water inlet valve and the backwater valve are opened, and water washing is started, because the position of the filter press is high, when water flows out, the backwater pipe is under negative pressure. When the automatic sampling valve is not opened, because the liquid outlet of the flow cell is high, the liquid in the flow cell cannot be sucked away by the negative pressure. When the automatic sampling valve is opened, the filtrate before the backwater valve is continuously sucked away, passes through the flow cell, and the detection instrument (conductivity meter and ph meter) continuously detects data. In order to facilitate the comparison of the authenticity of online detection data, the manual sampling valve two is installed at the bottom of the flow cell, sampling is facilitated, and offline detection is compared.

[0011] After detection, the detection instrument (conductivity meter and ph meter) needs to be soaked with pure water, so water can be taken from the water inlet pipe, the flushing valve is connected, after online detection is finished, the automatic sampling valve and the manual sampling valve two are closed, the flushing valve is opened, automatic flushing is carried out for a period of time, and then the flushing is stopped. After the flushing is stopped, the remaining water remains in the flow cell, because the liquid outlet is high, the remaining water cannot be sucked away by the negative pressure, so that the purpose of soaking the probe is achieved.

[0012] The utility model discloses a beneficial effect: reasonable structure, simple to use, make full use of the negative pressure of backwater pipe, solve the problem of online sampling difficulty, can automatic sampling and flush, improve the stability of system, will not take place splash and corrosion equipment, reduce the instrument loss simultaneously, and the space is small, reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further described below in combination with the drawings and embodiments.

[0014] Figure 1 It is a structure schematic diagram of one kind chlorination method titanium dioxide washing online detection device in the utility model embodiment.

[0015] In the drawing: 1, filter press;2, feed valve;3, backwater valve;4, backwater outlet;5, manual sampling valve one;6, automatic sampling valve;7, flow cell;8, manual sampling valve two;9, flush valve;10, water inlet valve;11, water inlet pipe;12, backwater branch pipe;13, flush pipeline;14, detection instrument;15, liquid outlet;16, pipeline two;17, backwater main pipe. DETAILED DESCRIPTION

[0016] The utility model is clearly described below in combination with the drawings and specific embodiments in the utility model embodiment, and the description here is only used to explain the utility model, but not as the limitation of the utility model. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor, any modification, equivalent replacement, improvement etc. of the utility model, should be contained in the protection scope of the utility model.

[0017] EMBODIMENT

[0018] As Figure 1The utility model provides a kind of chlorination method titanium dioxide washing on-line detection device, including filter press 1, the filter press 1 is equipped with feed inlet, water inlet and backwater outlet 4, the feed inlet, water inlet and backwater outlet 4 are connected with feed pipe, water pipe 11 and backwater pipe respectively, the feed pipe is equipped with feed valve 2, water pipe 11 is equipped with water valve 10, backwater pipe is equipped with backwater valve 3;Backwater valve 3 and backwater pipe between backwater outlet 4 are connected with flow-through cell 7, the liquid inlet of flow-through cell 7 is communicated with backwater pipe by pipeline one, pipeline one is equipped with automatic sampling valve 6, the liquid outlet 15 of flow-through cell 7 is higher than liquid inlet, the liquid outlet 15 is communicated with backwater pipe by pipeline two 16, the top of flow-through cell 7 is equipped with detection instrument 14, and detection instrument is conductivity meter and ph meter, the detection probe of detection instrument 14 is inserted into flow-through cell 7, the position of detection probe is lower than liquid outlet 15, the bottom of flow-through cell 7 is equipped with flushing port, and the flushing port is connected with water pipe 11 by flushing pipeline 13, and flushing pipeline 13 is equipped with flushing valve 9.

[0019] The backwater pipe includes backwater main pipe 17 and a plurality of backwater branch pipes 12, one end of the backwater main pipe 17 is communicated with the backwater outlet 4 by pipeline three, the other end of the water main pipe is communicated with a plurality of backwater branch pipes 12, the pipeline one is communicated with the backwater main pipe 17, and the pipeline two 16 is communicated with the backwater branch pipe 12.

[0020] The backwater valve 3 is provided with a plurality of backwater valves 3, and each backwater valve 3 is arranged on the corresponding backwater branch pipe 12.

[0021] One of the backwater branch pipes 12 is also provided with a manual sampling valve one 5.

[0022] The flow-through cell 7 is also provided with a manual sampling valve two 8.

[0023] During production, open the water inlet valve and the backwater valve, and start washing. Since the position of the filter press is high, the backwater pipe is under negative pressure when water flows out. When the automatic sampling valve is not opened, the liquid in the flow-through cell cannot be sucked away by negative pressure because the liquid outlet of the flow-through cell is high. When the automatic sampling valve is opened, the filtrate before the backwater valve is continuously sucked away, passes through the flow-through cell, and the detection instrument (conductivity meter and ph meter) continuously detects data. In order to facilitate comparison of the authenticity of on-line detection data, a manual sampling valve two is installed at the bottom of the flow-through cell, which facilitates sampling and comparison with on-line detection results after off-line detection.

[0024] After the detection is finished, the detection instrument (conductivity meter and ph meter) needs to be soaked with pure water, so water can be taken from the water inlet pipe, the flush valve is connected, after the online detection is finished, the automatic sampling valve and the manual sampling valve one and the manual sampling valve two are closed, the flush valve is opened, automatic flushing is performed for 30 seconds, and then the flushing is stopped.

[0025] The automatic sampling valve, the backwater valve, the feeding valve, the water inlet valve, the flush valve, the conductivity meter, the ph meter and the electric valve in the above-mentioned embodiments are all prior art, and the application does not improve them, but only uses their existing functions; the specific structure and principle thereof can be referred to product manuals or prior art materials, which are all prior art.

[0026] The embodiments of the application have been described above, the above description is exemplary, is not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A chlorination method titanium dioxide water washing on-line detection device, comprising a filter press, the filter press is equipped with feed inlet, water inlet and backwater inlet, the feed inlet, water inlet and backwater inlet are connected with feed pipe, water pipe and backwater pipe respectively, the feed pipe is equipped with feed valve, the water pipe is equipped with water valve, and the backwater pipe is equipped with backwater valve; characterized in that: The backwater valve is connected with a flow-through cell on the backwater pipe between the backwater valve and the backwater port, the liquid inlet of the flow-through cell is communicated with the backwater pipe through pipeline I, the pipeline I is provided with an automatic sampling valve, the liquid outlet of the flow-through cell is higher than the liquid inlet, the liquid outlet is communicated with the backwater pipe through pipeline II, the top of the flow-through cell is provided with a detection instrument, the detection probe of the detection instrument extends into the flow-through cell, the position of the detection probe is lower than the liquid outlet, the bottom of the flow-through cell is provided with a flushing port, the flushing port is connected with the water inlet pipe through a flushing pipeline, the flushing pipeline is provided with a flushing valve.

2. The online detection device for washing of chlorination titanium dioxide according to claim 1, characterized in that: The backwater pipe comprises a backwater main pipe and a plurality of backwater branch pipes, one end of the backwater main pipe is communicated with the backwater port through pipeline III, the other end of the backwater main pipe is communicated with the plurality of backwater branch pipes, the pipeline I is communicated with the backwater main pipe, and the pipeline II is communicated with the backwater branch pipes.

3. The on-line detection device for washing of chlorinated titanium dioxide according to claim 2, characterized in that: The backwater valve is provided with a plurality of backwater valves, each backwater valve is arranged on the corresponding backwater branch pipe, and the pipeline II is communicated with the backwater branch pipe behind the backwater valve.

4. The on-line detection device for washing of chlorinated titanium dioxide according to claim 2, characterized in that: One of the backwater branch pipes is further provided with a manual sampling valve I.

5. The on-line detection device for washing of chlorinated titanium dioxide according to claim 1, characterized in that: The flow-through cell is further provided with a manual sampling valve II.

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