JP3973432B2 - Substance input management method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for managing charging of substances such as reactants in a chemical plant or the like and an apparatus therefor.
[0002]
[Prior art]
When chemical reactants that have at least two series of reaction tanks that perform the same reaction are charged with different time cycles, conventionally, the number of times and the order of charging are recorded on recording paper, recorded on a counter, etc. Measures were taken to prevent malfunctions caused by double charging of reactants into the reaction tank by manual confirmation.
[0003]
[Problems to be solved by the invention]
However, when the work of charging the reactants into the reaction tank is performed manually, there is a problem that malfunctions cannot be completely eliminated because human actions are involved. In a series of manufacturing processes that make products from raw materials, mistakes in preparation affect the subsequent processes, so it was necessary to prevent them as much as possible.
The present invention provides a low-cost, safe and reliable stock management method for preventing misfeeds and double feeds in the work of charging the same raw material into at least two systems of manufacturing processes using chemical reactions and the like. An object is to provide such a device.
[0004]
[Means for Solving the Invention]
As a result of intensive studies to solve the above problems, the present inventors installed a lock device that can be opened and closed by remote operation and a device that can confirm the opening and closing of the lid on the lid of the reaction vessel charging hopper, and further charged the reaction vessel under the hopper A manual butterfly valve with a limiter is attached to the nozzle connection, and sequence software that can check the locked state, lid open / close state, and butterfly valve open / close state is incorporated, and the butterfly valve can be opened and closed in addition to operating instructions from the instrumentation room. It has been found that the above problems can be solved by computer management so that raw material charging cannot be performed without confirmation, and the present invention has been completed.
[0005]
That is, the present invention relates to (1) a method for managing substance input to an apparatus having at least two series of reactant charging devices provided with a manual on-off valve at the bottom and an opening that can be opened and closed by remote operation at the top. And a substance input management method comprising: releasing a lock of the opening by remote operation by a computer; and further confirming that the manual opening / closing valve has been manually opened by the computer, and then supplying the substance ( 2 ) apparatus, a reactor for reacting a substance, material to be introduced is related to material input management method according to, characterized in that a substance which is reacted in the reactor (1).
[0006]
Further, there in (3) manual on-off valve at the bottom, material input management system with a device incidental least two series or more reactants charged device having an opening portion capable of locking the opened and closed by remote control at the top, and a computer And ( 4 ) substance charging, wherein the computer displays on the screen that the opening is unlocked by remote control and the manual opening / closing valve is manually opened. The substance input management system according to (3), wherein the opening is an opening of a hopper installed in the reaction apparatus, and a manual open / close valve is attached to the lower part of the hopper, ( 5 ) a reactor for reacting a substance according to materials to be introduced, characterized in that a substance which is reacted in the reactor (3) or (4) On the material input management system.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The method of the present invention and the apparatus used therefor are particularly effective when apparatuses for charging the same type of substance are arranged in parallel, and reacts when the charged amount is wrong, particularly in a reaction vessel of a chemical plant. The method and apparatus of the present invention can be suitably used because it is expected to have a large influence on the whole. A specific example is shown in FIG. 1 by taking a reaction tank in a chemical plant as an example. The apparatus used in the present invention includes a raw material charging hopper (1), a charging hopper lid (2), an air cylinder type locking device (3) for opening and closing the charging hopper which is remotely operated by a computer instruction, and a charging hopper opening / closing confirmation sensor. (4) A manual butterfly valve (5) that can be opened and closed by human eyes and hands at the charging location, a manual butterfly valve open / close confirmation limiter switch (6), and a dust blow prevention blower (7). 2 devices are arranged side by side.
[0008]
The shape of the lid of the charging hopper used in the present invention is not particularly limited, but a shape that does not cause inconvenience in mounting the air cylinder type locking device for opening and closing the charging hopper and the charging hopper open / close confirmation sensor is preferable. The air cylinder type lock for opening and closing the charging hopper is preferably attached to the left and right portions of the lid. Since the feeding hopper lid opening / closing confirmation sensor is used for lid opening / closing confirmation, it is sufficient if it is installed at one of the most suitable positions where the lid opening / closing can be detected.
[0009]
The management method of the present invention will be described in detail below using examples, but the present invention is not limited to the examples.
[0010]
【Example】
Example 1
A case will be described below in which a solvent is put into a reaction vessel and a reaction product is charged manually from the charging hopper lid 1 shown in FIG.
The reaction tank 1 and the reaction tank 2 arranged side by side may perform different reactions when performing the same reaction, but the management method of the present invention is particularly performed when performing the same reaction simultaneously at different times. Is preferred.
The lock device (3), the feed hopper open / close confirmation sensor (4), and the manual butterfly valve open / close confirmation limiter switch (6) shown in FIG. 1 are connected to a computer in the instrumentation chamber (see FIG. 1). The lock device (3) can be automatically opened and closed by remote operation from the instrumentation room, and the computer can be used to confirm the opening and closing of each operation on the computer screen. Connected with.
The procedure for charging the reaction product into the reaction vessel was as follows.
(1) The reaction solvent is put into the reaction vessel and stirring is started.
(2) Confirm that the air cylinder type locking device (3) has been released by turning on the computer.
(3) Manually open the manual butterfly valve (5).
(4) Check on the instrumentation room screen that the valve open / close confirmation limiter is ON and open. (5) Open the unlocked lid (2) and confirm on the instrumentation room screen that the lid is opened by the hopper open / close confirmation sensor (4).
(6) Rotate the blower installed on the charging side.
(7) The reactant contained in the flexible container with the hoist for fishing is put into the reaction tank through the charging port with the lid open.
(8) After finishing the preparation, manually close the lid (2) and close the air cylinder type locking device (3) on both sides of the lid according to computer instructions. At this time, the lid is opened and closed and the lock is confirmed on the computer screen.
(9) Stop the blower on the lid side and manually close the butterfly valve (5) at the bottom of the charging hopper. Check that the limiter switch for opening / closing confirmation is turned off on the computer screen.
This series of preparation work is carried out in cooperation between the computer screen operator and the field worker through wireless communication, and if the confirmation of opening and closing of the preparation hopper lid and the confirmation of opening and closing of the butterfly valve at the bottom of the preparation hopper are not cleared, the raw materials are prepared By making it impossible to carry out the process, it has become possible to proceed with the process without making a mistake in preparation due to the fact that there are two lines of the same raw material preparation.
[0011]
【The invention's effect】
As described above, by combining the confirmation by the computer system and the confirmation by manual operation, once the preparation is completed, it is possible to continue the preparation, and in the work of charging the same raw material into the two reaction tanks, Since it is possible to prevent preparation mistakes due to human error such as misunderstandings, the method of the present invention is extremely effective and can be said to have high industrial utility value.
[Brief description of the drawings]
1 represents a schematic view of an apparatus for using the method according to the invention.
[Explanation of symbols]
1. Raw material charging hopper2. 2. Feeding hopper lid 3. Cylinder type locking device 4. Feeding hopper open / close confirmation sensor Manual butterfly valve6. 6. Limiter switch Dust scattering prevention blower

Claims (5)

In a method for managing the material input to an apparatus having at least two series of reactant charging devices provided with a manual open / close valve at the bottom and an opening that can be opened and closed by remote control at the top, A substance input management method, wherein a substance is input after the computer confirms that the lock is released and the manual opening / closing valve is manually opened. 2. The substance input management method according to claim 1, wherein the apparatus is a reaction apparatus for reacting a substance, and the substance to be input is a substance to be reacted in the reaction apparatus. A substance input management system comprising: a device equipped with at least two series of reactant charging devices provided with a manual on-off valve at the bottom and an opening that can be opened and closed by remote operation at the top; and a computer, The substance input management system is characterized in that the lock of the opening is released by remote operation and that the manual opening / closing valve is manually opened is displayed on the screen. 4. The substance input management system according to claim 3, wherein the substance charging opening is an opening of a hopper installed in the reaction apparatus, and a manual opening / closing valve is attached to the lower part of the hopper. Device is a reactor for reacting a substance, material input management system according to claim 3 or 4 substances to be introduced, characterized in that a substance which is reacted in the reactor.

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