JPH01274036A - Thermobalance apparatus - Google Patents

Abstract

PURPOSE:To enable full automation of operations of an analyzer and a data processing from the filling of a sample container for a sample and to the withdrawal of the sample container from a heat balance, by arranging a sample container, a sample container supplying device and a sample filling device. CONSTITUTION:A balance 3 determines the weight WA of a sample container 1 by measuring and then, after the container 1 is filled with a sample 6, the combined weight WB of the sample 6 and the container 1 is determined by measuring to obtain an initial weight WC of the sample by calculating the weight WB- the weight WA. The operation of a measurement of the sample initial weight is performed by automatic operation of a sample container feeder 2, a container transfer device 4 and a sample filling device 5. The container 1 holding the sample 6 with the initial weight determined is sent to a thermobalance 8 with the sample container transfer device 7 and a heat weight change DELTAW is measured to determine a heat weight changing ratio R of the sample 6 thereby enabling automation of the operation of withdrawing the container 1 from thermobalance 8 with a container takeoff device 9.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a thermobalance device that measures the weight change of a sample due to heat, and in particular, it is used to analyze unburned components in a combustion device that uses solid fuel such as pulverized coal. It is suitable for application to the case of grasping the combustion state of fuel.

Prior Art A conventional thermobalance device is shown in FIG. The thermobalance device consists of an analysis section that analyzes the weight change of the sample due to heat, and a control/data processing section that controls the transfer and removal of the sample container containing the sample and processes the analytical data obtained by the analysis section. The analysis section has a container transfer device 7, a thermobalance 8, and a container removal device 9, and the control/data processing section has a control and data processing device 10.

In the conventional apparatus, an operator puts a sample into a sample container for a thermobalance and sets it in the container transfer device 7. The sample weight (initial weight) is determined by weighing in advance.

The sample container containing the sample set in the container transfer device 7 is
Under the control of the control and data processing device 10, it is automatically transferred to the thermobalance 8 and set therein.

In the thermobalance 8, the sample is heat-treated and the weight change after the heat treatment is measured. From the measured weight change and the predetermined initial weight of the sample, the control and data processing device 10 calculates and displays the ratio of weight change to the initial weight.

The sample heat-treated in the thermobalance 8 is automatically taken out along with the sample container under the control of the container take-out device 9 and the data processing device 10. In this way, the operation of the analysis section is controlled and the data processing necessary for analysis is performed. is performed in the control/data processing section.

As mentioned above, conventional thermobalance devices can automatically analyze the rate of weight change due to heat treatment of a sample, but they are also capable of automatically analyzing the rate of weight change due to heat treatment of a sample. Setting the container on the container transfer device requires manual labor.

Problems to be Solved by the Invention In order to know the combustion state of fuel in a combustion device that uses solid fuel such as pulverized coal, a method is used that analyzes thermogravimetric changes in the sample using ash produced after combustion of the solid fuel. . If the thermogravimetric change is small, it means that it has burned well. In order to understand the combustion status of a combustion device, it is necessary to collect and analyze the ash generated by the combustion device at certain intervals, but with conventional analysis devices, it is necessary to collect and analyze the ash generated in the combustion device. Filling, measuring the initial weight of the sample, and setting the sample container on the container transfer device must be performed manually, which requires a lot of manpower.

When the thermogravimetric change of ash generated in a combustion device is measured using a thermobalance, the present invention involves filling a sample container for the thermobalance, initial weighing of the sample, and setting the sample container to a container transfer device. Measurement of sample weight loss Calculation of weight change ratio with respect to the initial weight of the sample, and removal of the heat-treated sample and sample container from the thermobalance are automatically performed to analyze the weight change of the sample due to heat without human intervention. The purpose of the present invention is to provide a thermobalance device that can perform

Means for Solving the Problems According to the present invention, there is provided a container transfer device for transferring a sample container containing a sample, a thermobalance for heat-treating the transferred sample and measuring the weight change after the heat treatment, and a heat-treated sample container for transferring the sample container. an analysis section having a container take-out device for taking out the sample together with the sample container; a control for controlling the operation of the container transfer device and the container take-out device of the analysis section; and a control for calculating a weight change rate due to heat treatment of the sample in the thermobalance; In a thermobalance device comprising a control/data processing section having a data processing device, the analysis section further includes a sample container supply device for taking the sample container into the analysis section;
A sample filling device that puts a sample into a sample container, a balance that weighs the sample container supplied by the sample container supply device and the sample container filled with the sample by the sample filling device, and between the balance and the sample filling device There is provided a thermobalance device comprising a device for reciprocally transporting a sample container, wherein the filled sample container is weighed by the balance and then transferred to the thermobalance by the container transfer device. .

First of all, the weight of the sample container is 3! (WA) is weighed and determined, and then, after filling the sample container with the sample, the total type ff1 (WB) of the sample and sample container is weighed and determined, and WB-WA
The initial weight of the sample (WC) is determined by the following calculation. The above initial sample weight measurement operation is performed by automatic operation of the sample container supply device, the device for reciprocating the sample container, and the sample filling device.

The sample container containing the sample whose initial weight was determined is sent to the thermobalance by the sample container transfer device, as in the conventional device, the thermogravimetric change (ΔW) is measured, and the thermogravimetric change rate (ΔW) of the sample is calculated. R) is determined and the sample container is removed from the thermobalance by the container removal device. The operation is performed automatically.

EXAMPLE Hereinafter, a preferred example of the thermobalance device according to the present invention illustrated in FIG. 1 will be described in detail.

In FIG. 1, reference numeral 1 indicates a sample container, 2 indicates a sample container supply device, 3 indicates a balance, 4 indicates a container transfer device for reciprocating the sample container, 5 indicates a sample filling device, 6 indicates a sample, and 7 indicates a container transfer device. , 8 is a thermobalance, 9 is a container unloading device, IO is a control and data processing device, and 11 is a printer as a data output device.

The sample container l is supplied to the balance 3 by the sample container supply device 2, and after its weight W A is measured by the balance 3, it is transferred to the sample filling device 5 by the container transfer device 4. The sample 6 is filled into the sample container 51 by the sample filling device 5 . The sample container filled with the sample is again transferred to the balance 3 by the container transfer device 4, and the total type ff1WB of the sample and sample container is weighed. , the control and data processing device IO determines the sample initial type fiWc=WB-WA.

The sample container whose initial sample weight WC has been determined is transferred from the balance 3 to the thermobalance 8 by the container transfer device 7 and set therein. In the thermobalance 8, the sample is heat-treated and the weight change ΔW of the sample is measured.
is measured. The control and data processing device 10 calculates the thermogravimetric change rate 1'(-(ΔW/WC)×100% of the sample from the sample initial weight WC and the weight change ΔW. After the thermogravimetric change ΔW is measured, The loaded sample container is removed from the thermobalance 8 by a container removal device 9.

The operations and data processing necessary for the above analysis are automatically performed by the combination of the analysis section and the control/data processing section.
The analysis value is output and displayed on the printer 11 or the like.

Sample container supply device 2, container transfer device 4, sample filling device 5
, the container transfer device 7, and the container takeout device 9 can be configured as one unit or a plurality of devices.

Effects of the Invention According to the present invention, in a thermobalance for measuring a change in thermal gravity of a sample, the initial weight of the sample WO2 is the amount of weight change ΔW due to heat.
, when calculating the thermogravimetric change rate R = (ΔW/WC) x 100%, the operation of the analyzer and data processing are fully automated, from filling the sample container for the thermobalance with the sample to removing the sample container from the thermobalance. Therefore, the amount of manpower required to measure changes in sample weight can be significantly reduced.

Furthermore, when the device according to the present invention is applied to determine the combustion state of a combustion device using solid fuel, the combustion state can be automatically and continuously determined without requiring any human intervention.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a thermobalance device according to the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional thermobalance device. 1. Sample container, 2. Sample container supply device, 3. Balance, 4. Container transfer device, 5. Sample filling device, 6. Sample, 7. Container transfer device, 8. Thermobalance. , 9... Container removal device, IO... Control and data processing device, It...
printer. (and others) Ward Z

Claims (1)

[Claims] Analysis that includes a container transfer device that transfers a sample container containing a sample, a thermobalance that heats the transferred sample and measures the weight change after heat treatment, and a container takeout device that takes out the heat-treated sample along with the sample container. and a control/data processing section having a control and data processing device that controls the operations of the container transfer device and container takeout device of the analysis section and calculates the rate of weight change due to heat treatment of the sample in the thermobalance. In the thermobalance device, the analysis section further includes a sample container supply device that takes the sample container into the analysis section, a sample filling device that puts the sample into the sample container, and a sample container supplied by the sample container supply device and the sample filling device. It has a balance for weighing a sample container filled with the sample container, and a device for reciprocating the sample container between the balance and the sample filling device, and the filled sample container is weighed by the balance and then weighed by the sample container filled with the sample container. A thermobalance device, characterized in that the thermobalance is transferred to the thermobalance by a container transfer device.