JPS6250180B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an apparatus for continuously processing a viscous substance accompanied by evaporation, and relates to a partition structure of a mixing machine suitable for a polymerization machine for small-scale production. .

[Background of the invention]

Generally, in the treatment of viscous substances that involve evaporation, such as removal of volatile substances during the reaction, operation is performed under reduced pressure, and a horizontal reactor with a raw material supply port at one end and a discharge port at the other end is used continuously. It is effective to perform the processing in a specific manner. The amount of volatile substances removed by this evaporation increases in proportion to the degree of pressure reduction, but if the atmospheric pressure is suddenly reduced, some of the viscous substances will flow out of the system along with the volatile substances removed by evaporation. be discharged. Therefore, conventionally, volatile substances have been removed by connecting a plurality of processing devices in series and sequentially lowering the operating pressure in each processing device.

Such conventional methods require multiple configurations of processing equipment, resulting in (1) increased complexity of the processing process, (2) increased equipment manufacturing costs, (3) increased equipment installation space, and (4) increased number of operating and maintenance locations. There were drawbacks such as complication of work.

Therefore, as a way to solve these problems,
An apparatus has been devised in which a single container is partitioned into a plurality of chambers and a plurality of processing apparatuses are connected in series to achieve the same effect. However, when trying to put this device into practical use, several problems arose.
It is necessary to try to resolve these issues. In other words, (1) The liquid level in each chamber can be adjusted independently (not affected by pressure fluctuations in adjacent chambers).

(2) There should be no abnormal accumulation of liquid in the partition.

(3) The structure of the partition should be simple and economical. The structure must satisfy the following.

In particular, the liquid level control described in (1) is extremely important for operation.

Currently, a horizontal viscous substance processing device has been devised that has a multi-chamber structure in which one container is partitioned into multiple chambers using partition plates. The structure has an overflow plate adjacent to the rear of the partition plate. In this case, since the amount of the liquid to be treated changes due to the pressure difference between two adjacent chambers, there are drawbacks such as the residence time of the liquid to be treated changes. In other words, the pressure difference between the two adjacent chambers in this case is compensated for by the liquid level difference between the liquid level in one chamber and the overflow liquid level at the overflow plate behind it. If the operating pressure on the chamber side whose inlet is the overflow path changes, the liquid level height on the partition plate side will also change accordingly. Therefore, the residence time of the liquid to be treated changes.

[Purpose of the invention]

The present invention provides a partition that can keep the amount of liquid retained constant without being affected by fluctuations in the operating pressure when performing multi-stage pressure operation by sequentially lowering the operating pressure within such a single device. It's about providing structure.

[Summary of the invention]

The present invention creates a multi-chamber structure by vertically installing a partition plate with a notch as a flow path for the substance to be treated, blocking the space, and creating a difference in the degree of pressure reduction in each chamber to continuously transport the viscous substance. In a processing device, the pressure difference between two adjacent chambers in a multi-chamber structure is determined by an overflow channel that occurs between the liquid level in one chamber (overflow plate height liquid level) and a partition plate installed adjacent to the liquid level. This is compensated for by the difference in the liquid head at. As a result, even if the operating pressure of each chamber fluctuates, the pressure difference between two adjacent chambers can be ensured only by the fluctuation of the liquid head difference in this overflow path, so the liquid does not accumulate in each chamber. The amount (liquid level) can always be constant.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 and 2 show an embodiment of the present invention, where 1 is an outer wall provided with a heating device 14, 2 is an inlet for the substance to be treated, 3 is an outlet for the substance to be treated, and 4 is a discharge port. It is divided into two chambers by a partition plate 6 having a liquid flow path 7. Therefore, the inlet 2 of the substance to be treated
The partition plate 6 is provided adjacent to the rear of the overflow plate 5 and parallel to the overflow plate 5 when viewed from above, and a stirring blade 11 is attached to a horizontally installed stirring shaft 10 to stir the processing liquid. It is made to be.

The processing liquid supplied from the inlet 2 is passed through the stirring blade 11
The liquid overflows from the overflow plate 5 while being stirred, passes through the liquid passage 7 provided in the partition plate 6 that completely blocks off the space of the container, and is sent to the next chamber, where the liquid flows in the same manner as the first chamber. It is continuously sent out of the apparatus through the outlet 3 while being agitated.

In each chamber, volatile substances in the substance to be treated are evaporated and removed from the exhaust port 4 under appropriate reduced pressure. Further, each chamber is provided with a weir 12 from above to prevent back mixing of the treated substances.

By the combination of the overflow plate 5 and the partition plate 6,
The pressure difference between two adjacent chambers is compensated by the liquid head difference between one chamber and the overflow path 9 behind it. This results in
Even if the operating pressure of two adjacent chambers changes, only the liquid head difference in the overflow path 9 changes, so the amount of liquid retained in each chamber (liquid level 8) can be kept constant without changing. can. Here, various forms of the overflow channel 9 in the overflow plate 5 can be adopted, and any form that divides the liquid to be treated may be used.

Normally, when processing a viscous substance, an evaporation operation is involved, so the apparatus is not filled with a processing liquid, and the upper part of the apparatus is left open. Therefore, when creating a multi-chamber structure using partition plates as described above, the space must be completely blocked off, so that the liquid level in the overflow channel 9 is always above the notch serving as the liquid flow channel 7. In addition, it is necessary to control the retention status of the substances to be treated in each chamber. Note that there are no particular limitations on the position, shape, size, etc. of the notch provided in the partition plate 6 as the liquid flow path 7, and the optimum one can be determined for each device.

3 and 4 show an overflow channel 9 due to the shape of the liquid channel 7.
In order to minimize the amount of liquid stagnant at
This figure shows another embodiment of the present invention in which an overflow groove 13 is provided.

〔Effect of the invention〕

According to the present invention, multi-stage pressure treatment, which was conventionally performed using multiple containers, can now be performed with a single container, and the amount of liquid retained in each chamber can be controlled without being affected by fluctuations in operating pressure. This has the effect that it can be kept constant.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG. 1, FIG. 3 is a longitudinal cross-sectional view of another embodiment of the present invention, and FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3; 1... Outer wall, 2... Entrance, 3... Exit, 4...
Exhaust port, 5... Overflow plate, 6... Partition plate, 7... Liquid channel, 8... Liquid level, 9... Overflow channel, 10... Stirring shaft, 11... Stirring blade, 12... ...Weir, 13...Overflow groove, 14...Heating device.

Claims (1)

[Claims] 1 A partition plate with a notch as a flow path for the substance to be treated is installed vertically, and the space is blocked off to create a multi-chamber structure, with an inlet for the substance to be treated on one side and an outlet on the other side, with each chamber having a A partition structure for a viscous substance mixer provided with an exhaust port, characterized in that an overflow member is provided in front of the partition plate when viewed from the inlet side.