JPH05346378A - Equipment for precipitation and filtration of slurry liquid and automatic apparatus for sampling slurry liquid using the same - Google Patents

Abstract

PURPOSE:To reduce the amount of work and to attain a real-time analysis of constituents by executing a series of operations of sampling, filtration, conveyance of samples and washing of a filter automatically and continuously. CONSTITUTION:With valves (a), (e), (j) and (m) opened, a suction device 6 is started and a slurry liquid in a tank is filled up in a precipitation vessel 2 through a liquid contact pipe 1. Then, the valves (a), (e), (j) and (m) are closed and the device 6 is stopped. Next, the vessel 2 is opened to the air by opening a valve (f) and slurry in the liquid is subjected to spontaneous precipitation sufficiently. Thereafter the device 6 is started with valves (b), (j) and (m) opened while the valve (f) left open, and a supernatant liquid in the vessel 2 is made to flow into a sample vessel 5 through a filter 4 via a pipeline 11. At the time point when a prescribed quantity of this liquid is stored, the valves (b), (j) and (m) are closed and the device 6 is stopped. After sampling operations stated above are finished, the filtered liquid in the vessel 5 is pressurized by compressed air by opening valves (l) and (o) and sent under the pressure to a supply device 8 via a pipeline 14. Opening a valve (q) as occasion demands, the device 8 supplies the filtered liquid to an analyzing device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sampling device used for component analysis in a wet process of metal smelting, and more particularly to a sampling device for sampling / filtering a slurry liquid having poor properties and supplying it to an analyzer. ..

[0002]

2. Description of the Related Art Almost all wet processes of metal smelting are reaction steps, and component analysis of process liquids has been conducted for a long time in order to grasp reaction states and control quality. Usually, component analysis is required to be precise, and therefore, a high-level analysis device such as a primary absorption analysis device or an ICP device is used as an analysis device. When using these high-grade analyzers, it is necessary to install them in a temperature- and humidity-controlled environment-friendly instrument room or the like from the viewpoint of ensuring analysis accuracy and control of the device, and to remove slurry from the liquid to be supplied.

As a sampling device for this component analysis, when the process liquid is a liquid that does not contain slurry and has good properties, a transfer device for transferring the process liquid is provided in the process system. Is generally connected by a line via a simple line filter or the like, and the process liquid is directly supplied to the analyzer.

On the other hand, when the process liquid is a slurry liquid containing a large amount of slurry, in the above-mentioned method, the slurry cannot be properly sampled due to the failure of the conveying device and the blockage of the pipeline, and the filtration is performed before supplying it to the analyzer. It is necessary to remove the slurry. Therefore, in such a sampling of the slurry liquid, an operator goes to the site and collects the slurry liquid from the opening on the slurry tank using a ladle, etc., takes it back to the instrument chamber, filters it, and then supplies it to the analyzer. That is, in order to analyze the slurry liquid, it is necessary to go up above the slurry tank and collect the slurry liquid, which is dangerous in operation. Moreover, since filtration is required before moving back and forth between the site and the instrument room and supplying it to the analyzer, it is difficult to increase the frequency of analysis due to the increase in the amount of work of the operator and there is a delay in obtaining analysis results. There was a problem.

[0005]

SUMMARY OF THE INVENTION The present invention provides a sampling device which solves the above-mentioned problems of the prior art and which supplies and supplies a slurry liquid to a sampling / filtering and analyzing device. It is intended to reduce and real-time component analysis.

[0006]

In order to solve the conventional problems, the present apparatus automatically and continuously carries out a series of operations of sampling, filtration, sample transportation, and filter cleaning.

That is, in the present apparatus, the slurry liquid is sucked into the sedimentation container through the liquid contact pipe by the suction device, the slurry is allowed to spontaneously settle in the sedimentation container, and then the filtrate is again filtered through the filter by the suction device into the sample container. A mechanism for aspirating the inside, a mechanism for feeding the filtrate stored in the sample container to the supply device for supplying the filtrate to the analyzer by compressed air, and a washing liquid and compressed air in the direction opposite to the inflow direction of the filtrate. It has a mechanism for bubbling the filter after it has flowed into the filter and causing it to wash in the filter container, and a series of operations are automatically and continuously performed by a control device.

[0008]

[Function] Since this device can sample and filter the slurry liquid and supply it to the analyzer, the worker who has been doing so far goes to the site to collect the slurry liquid and then takes it back to the instrument room and supplies it to the analyzer. The work of doing can be eliminated. Further, since this device can perform filtration at the same time as sampling, it is possible to eliminate the conventional filtering work before supplying to the analyzer.

Since the present apparatus can automatically and continuously perform these series of operations, it is possible to increase the analysis frequency, which was limited by the work load, and to carry out the component analysis in real time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of this apparatus will be described below with reference to the drawings. The drawing is a piping system diagram showing the whole of this device, and as a device for sampling and filtering the slurry liquid from the slurry tank, the liquid contact pipe 1 and the valve a that have been in contact with the slurry liquid in the slurry tank are used temporarily. A settling container 2 for storing the slurry liquid and allowing it to spontaneously settle, a pipe 9 for introducing the atmosphere through a valve f at the time of settling, a filter 4 for filtering the slurry liquid, a filter container 3 for storing the same, and a flow path. The valves b and e to be switched and the pipe line 10, the sample container 5 for temporarily storing the filtrate, and the pipe line 11 for supplying the filtrate via the valve j, the suction device 6 and the valve m to apply suction force. A conduit 12 for transmission is provided.

Next, as a device for supplying the filtrate stored in the sample container 5 to an analyzer installed in an instrument room or the like, a pipe line 13 for supplying compressed air to the sample container 5 via a valve 1 and a valve o. Pipeline 1 communicating with the supply device 8 via
4, a pipe line 15 is provided to supply to the analyzer via the valve q. In addition, a pipe 16 for supplying water via the valve k for washing the sample container 5, the pipe 14, and the supply device 8 and pipes 17, 18 connected to the wastewater treatment process via the valves n, p are provided. Has been.

Next, as a device for cleaning the filter for long-term continuous use of the filter, a meter 7 for measuring a necessary amount of the cleaning liquid and a conduit 19 for supplying the cleaning liquid via a valve g and a valve i are used. Pipe 20 for supplying compressed air to the filter, a pipe 21 for supplying compressed air through a valve h for bubbling with compressed air, and a valve d for the filter container 3 in conjunction therewith. A pipe line 22 for supplying compressed air via a pipe 23 and a pipe line 23 for releasing air to the atmosphere via a valve c for bubbling air in the filter container 3 are provided.

In the apparatus thus constructed, when the operation is started, the sampling operation is started. In the sampling operation, the valves a, e, j, m are opened and the suction device 6 is opened.
When is activated, suction force acts in the direction of arrow A, and the slurry liquid in the slurry tank flows into the sedimentation container 2 through the liquid contact pipe 1. When the settling vessel 2 is filled with the slurry solution, the valves a, e, j, m are closed and the suction device 6 is stopped, so that the slurry solution is stored in the settling vessel 2. After that, when the valve f is opened and the sedimentation container 2 is opened to the atmosphere, the slurry in the liquid spontaneously sediments in the sedimentation container 2. When this state is maintained for a certain period of time, and the valves f, b, j, m are opened with the valve f open after allowing the particles to spontaneously settle, the suction force acts in the direction of arrow B, and the inside of the settling container 2 The supernatant liquid flows into the sample container 5 via the filter 4 and the conduit 11. When a certain amount of the filtrate is stored in the sample container 5, the valves b, j, m are closed and the suction device 6 is stopped, so that a certain amount of the filtrate is stored in the sample container 5. Further, by opening the valves a, b and f, the slurry liquid remaining in the sedimentation container 2 is returned to the slurry tank through the liquid contact pipe 1.

When the above sampling operation is completed, the carrying operation for carrying the filtrate in the sample container 5 to the supply device for supplying the analyzer is started. In the carrying operation, the filtrate in the sample container 5 is pressurized by the compressed air by opening the valves 1 and o, and is sent under pressure to the supply device 8 via the pipe line 14. The supply device 8 supplies the filtrate sent under pressure to the analyzer by opening the valve q as necessary. After the supply to the analyzer, the valve k is opened in place of the valve 1 to inject water into the sample container 5 to open the valve n or valves o and p to open the sample container 5, the pipe line 14, and the supply device 8 with water. Wash. After cleaning, the valve 1 is opened in place of the valve k, and compressed water is used to pump water to remove water from the inside of the system. Excluded water is pipeline 1
It is sent to the wastewater treatment process via 7 and 18.

In parallel with the above-mentioned transport operation, the filter cleaning operation is started. When cleaning the filter, valve g
By opening the cleaning liquid, the cleaning liquid flows into the measuring instrument 7 through the conduit 19. When the meter 7 is filled with the cleaning liquid and the valves g and i are opened instead of the valve g, the cleaning liquid in the meter 7 is pressurized by the compressed air and is pumped into the filter 4 through the pipes 20 and 11. .. At this time, by closing the valve b and opening the valve c, the cleaning liquid is stored in the filter container 3,
Bubbling occurs by pressurizing as it is, and the filter 4 is washed in the filter container 3. When the valve d is further opened, compressed air is introduced into the filter container 3 through the pipe line 22, and bubbling is strengthened to enhance the cleaning effect. After cleaning, the valves a and b are opened, and the cleaning liquid in the filter container 3 is discharged to the slurry tank through the settling container 2 and the liquid contact pipe 1. This is because the amount of cleaning liquid is extremely small compared to the amount of liquid in the slurry tank and the effect on the process system can be ignored.

Since the system for carrying operation and the system for cleaning the filter are separated by the valve j, they can be operated independently of each other, so that the operating time of the apparatus can be shortened. The above-described series of operations are all automatically controlled by the control device 24, and continuous operation can be repeated at a frequency as desired.

[0017]

As described above, according to the present invention, the slurry liquid can be sampled / filtered and supplied to the analyzer without requiring the intervention of the operator, thus reducing the workload of the operator and real time. It is possible to analyze various components and is an extremely effective means for stabilizing the operation.

[Brief description of drawings]

FIG. 1 is a diagram showing an entire piping system of the device of the present invention.

[Explanation of symbols]

 1 Liquid Contact Pipe 2 Sedimentation Container 3 Filter Container 4 Filter 5 Sample Container 6 Suction Device 7 Metering Device 8 Supply Device 9-23 Pipeline 24 Control Device aq Valve

Claims (3)

[Claims] 1. A settling vessel and a filter vessel having a built-in filter therein are erected on the upper side of the settling vessel via a valve, and a liquid contact pipe that penetrates into the slurry tank via the valve is provided on the lower side of the settling vessel. In the upper part of the sedimentation container, a pipe communicating with the suction device via a valve is connected to an open pipe via a valve for opening to the atmosphere, and in the upper part of the filter container communicating with the suction device via a valve. A slurry liquid settling / filtering device, which comprises connecting the pipe lines to allow the slurry liquid to spontaneously settle and then sampling and filtering the supernatant liquid through a filter. 2. A meter connected to a compressed air source and a cleaning liquid source via a valve is connected via a valve to a pipe line connecting the filter container and the suction device, and the flow direction of the filtrate is opposite to that of the filtrate. A slurry liquid sedimentation filtration device, characterized in that a cleaning liquid and compressed air are caused to flow into a filter in a direction to cause bubbling in the filter container to clean the filter. 3. A supply device for supplying a liquid to an analyzer by connecting a sample container for storing a filtrate with a pipe line between the slurry liquid sedimentation filtration device and the suction device via front and rear valves. An automatic slurry liquid sampling device characterized in that it is connected to a sample container via a valve via a pipe line, and the filtrate in the sample container is pressure-fed to the supply device by compressed air.