JPS5919503A - Apparatus for recovering volatile substance - Google Patents

Abstract

PURPOSE:To smooth the mutual change-over of cooling and heating and to enhance the reliability of the titled apparatus, by a method wherein a cooling and a heating loop lines connected to a recovery container are formed into a common loop line to simplify the line itself and an attached installation. CONSTITUTION:A heat exchange loop line 3 for both condensation and sublimation is connected to a recovery container 1 for recovering a volatile substance so as to confront to the heat conductive surface in said recovery container 1. On the other hand, a cooling apparatus 4 and a heating apparatus 5 are together provided on the way of the same heat exchange loop line 3 and the heat exchange loop line 3 is used as cooling and heating. In addition, the bypass line 3' of the heating apparatus is provided and a second cooling apparatus 6 having a cooling pipe 6' is also provided in said bypass line 3'. As the result, the recovery of a volatile substance by the recovery container 1, the detachment feasibility thereof and the reliability of the apparatus can be enhanced to a large extent.

Description

[Detailed Description of the Invention] The present invention enables volatile substances such as sodium and iodine to be collected in a collection container in a chemical plant by utilizing their condensation and sublimation properties, and also to be taken out from the same container. The invention relates to recovery equipment for volatile substances.

Has a device been developed that utilizes the condensation and sublimation properties of volatile substances to collect them in a collection container or remove them from the container? A cooling loop line with a heating device and a heating loop line with a heating device are switched by an on-off valve (depending on the incident, the cooling loop line and heating loop line can be alternately placed in God) Ih structure and (2,
When recovering volatile substances, the connection is switched to the cooling loop line, and when taking it out, the connection is switched to the heating loop line.Equipped with an on-off valve for switching the line, each Each line has a pressurized tank for cooling medium and heating medium.

However, in the above-mentioned volatile substance recovery equipment, both the cooling and heating loop lines are installed, and the structure is equipped with multi-θ on-off valves and a pressurized tank for the medium (σ) for each loop line. In addition, it is a large piece of equipment with a 4-snap structure and requires troublesome line replacement work.In addition, if the media pressurized tank is used for both loop lines, heat loss will occur from the communication line, and , there are drawbacks such as sudden temperature changes to the heat transfer wall inside the recovery container when switching lines from cooling to heating or from heating to cooling, which may lead to a decline in reliability over time. .

The present invention was developed in order to solve the above-mentioned difficulties in the conventional recovery equipment for volatile substances T. At the same time, a cooling device and a heating device can be operated separately in the middle of the heat exchange loop line. (The feature is that the loop line for cooling and heating connected to the collection container is used as a common loop line to connect the line itself and attached equipment.)
The purpose of the present invention is to provide a highly reliable volatile substance recovery device that allows smooth switching between analyzation, cooling, and heating. The heat exchange loop line is connected to the 111" container connected to the volatile substance valve conduit, and a cooling device and a heating device are installed separately in the middle of the heat exchange loop line. Since the cooling system (?fσ) is installed in the operating state, the heat exchange roots line is valved to cool the inside of the collection vessel, and the volatile substances introduced from the valve conduit are condensed, and the volatile substances introduced through the valve conduit are condensed. In addition, when taking out the collected volatile substances from the collection container, only the heating device is operated and the volatile substances %i in the collection container are easily sublimated by the same loop line. When switching from cooling to heating or from heating to cooling, it is possible to smoothly change the medium level by operating cooling and heating at the same time, and the heat exchange loop line, The auxiliary equipment has an extremely simple configuration, eliminating the need for loop line switching operations.Furthermore, heat exchange performance and reliability are significantly improved, with no heat loss, and volatile substance recovery efficiency and extraction performance are improved. A non-inventive embodiment will now be described with reference to the drawings, which can significantly improve the angle below 7 degrees.

Fig. 1 shows an embodiment of the present invention. In Fig. 1, (1) is a recovery container for recovering volatile substances, and (2) is a recovery container connected to a plant, etc. not shown, to introduce volatile substances. A valve conduit connected to the recovery vessel (1), which includes a heat exchange loop line (3) for condensation and sublimation or a recovery vessel (1).
) is connected to the heat transfer surface (not shown), and a refrigerator (4') is installed in the middle of the heat exchange loop line (3).
A cooling device (4) consisting of a heat exchanger (4//) and a heating device (5) having a heating pipe (5') is installed in the middle of the same heat exchange roof line (3). , the heat exchange loop line (3) is used for cooling and heating 1 (
Furthermore, heating device r6. (5) Bypass line (3')
A cooling pipe (6') is installed in the same pass line (3').
) A second cooling system (6) is also installed.

In addition, the power is a pump that circulates the cooling and heating medium in the heat exchange loop line (31), and (8) is a tank that absorbs volume changes of the cooling and heating medium in the heat exchange loop line (3). , (Vl), (V2), (V3), (V4
) are on-off valves placed before and after the heating device t(5) and the second cooling device (6).

The first embodiment shown in FIG. 1 has the above-described configuration, so the on-off valves (Vl) (V2) are opened,
Close V4) and add heating device (5): $! tube (5'
) Stop the flow of heat medium into the cooling AAtt6. (4)
When only the pump is activated, the medium in the heat exchange loop line (3), which is circulated by the force of the pump, flows through the inactive heating device (5) and then becomes a cooling medium by the cooling device light (4). In order to cool the heat transfer surface (not shown) into the recovery container m, the trunk 7h 'ft (10 from 2j
1) The volatile substances introduced into the container (1) can be condensed and collected in the same container (1).

Next, the volatile substances recovered by heating the inside of the collection container (1) are heated to the cooled state of the collection container (1).
t When switching to the operation for taking out to 211UII, start supplying the heat medium to the heating pipe (5') of the heating device (51) in the cooling state described above, and at the same time start supplying the heat medium from the refrigerator (4') in the cooling device (4). By gradually reducing the supply, the medium circulated in the heat exchange loop line (3) can be gradually switched over to the heating medium, so that when the heating medium reaches the set value, the cooling device (4) is already switched on. The heating medium in the heat exchange lubrication line (3) is heated by the heating device (5) and the amount of heat generated by the pump (7) is added, and is collected in the recovery container (1) and hardened to ℃. The volatile substances present are gradually sublimed and removed through the valve conduit (2).

In the heating operation described above, the amount of heat flowing into the collection container ([) (c) can be controlled by controlling the flow of the heating medium by the pump (71). The required power for (7) also increases, and the amount of 41 raw heat also increases, so the control described above cannot be performed sufficiently.In this case, the on-off valves (■3) (■4)
is opened appropriately to divert a part of the heating medium in the heat exchange loop line (3) to the bypass line (3'), and after cooling it in the second cooling device (6) which is the diverted flow, it is transferred to the bypass line (3'). By flowing into the loop line (3), the heating medium in the loop line (3) can be controlled to a desired set value, and the removal rate of the explosive substance in the collection container (1) can be adjusted at any time. It is the management's responsibility to adjust the situation.

In addition, when switching from heating to cooling, the flow rate of the heat medium in the heating tube (5') in the heating device (5) is reduced, while when the cooling device (4) is brought into operation, the heat exchange loop The medium in the line (3) is gradually transferred from a heating medium to a cooling medium, so that the heat transfer surface (not shown) in the recovery container (1) can be gradually transferred to a cooling medium. Further, during the transition, it is possible to open the on-off valves (■3) (■4) and add a cooling function by the second cooling device (6) to control the transition speed, and also to control the transition speed by opening the on-off valves (■3) (■4). 5) is inactive, and if cooling is insufficient, the second cooling device W (6) can be used to compensate for the cooling, which increases the cooling medium flow. The adverse effects caused by the heat generated by the pump (7) can be eliminated and efficient cooling performance can be achieved.

The tank (8) compensates for the excess or deficiency of the medium in the heat exchange loop line (3) by reducing the volume of the cooling and heating medium in the heat exchange loop line (3). Facilitate distribution.

Therefore, in the first embodiment described above, the collection container (1
) The collection of volatile substances into the container (in other words, the collection of volatile substances into the same container and the discharge of volatile substances collected into the same container) are carried out smoothly. It has the advantage that it can be carried out extremely smoothly, and that the desired heating and cooling can be effectively controlled at any time, and that the cooling and heating loop lines can be shared.

The number of equipment such as on-off valves is extremely reduced, making it possible to create a simplified and compact device. 5.The loop line switching operation using on-off valves, etc. is extremely reduced. It is possible to switch between heating and heating, making it extremely easy to operate, and greatly improving recovery of volatile substances using a recovery container, +(y removal performance, and reliability).

Furthermore, a second embodiment of the present invention is shown in FIG.
First implementation 1+1 shown in FIG. Compared to l, C9 cooling and heating @ direct (9) installation in the bypass line (3'),
The cooling/heating device (9) includes a heating pipe (5') and a cooling/heating device (9).
The second cooling device 6 (6') shown in FIG.
6) and the JJFI cram school device (5). Therefore, the on-off valve (vl) in Fig. 1 is unstable, and the downstream side of the cooling/heating device (9) is a check valve (
■5) The configuration is as follows. Therefore, the second embodiment has the advantage that the opening and closing operations of the valves corresponding to the on-off valves (■1) and (■3) shown in FIG. ) is opened, the medium in the heat exchange loop line (3) flows into the cooling/heating device (9) from the downstream side of the bypass line (3'). There are 16 functions to prevent the heating medium and refrigerant from flowing into the heating pipe (5') and the heating tube (6') in the cooling/heating device (9), stop, and switch. etc., the first
The heating device (5) in Example 1-11 and T! , the same functions as those of the second heat treatment device (6) can be obtained, and the effects of the first embodiment can be achieved. ] In addition, there are other advantages such as simplified structure and easier operation.

The present invention has been explained below with reference to the embodiments, but of course it is limited only to such embodiments as the misfire + force is σ), and the power of the gods is within the scope of the spirit of the invention. It is a modification of the construction staff.

[Brief explanation of drawings]

Figure 1 is a mechanical view of a volatile substance recovery device showing a first embodiment of the present invention, and Figure 2 is a diagram of the same mechanism showing a second practical example of the present invention. 1: Collection container 2: Trunk pipe Filter: Heat 9 exchange loop line
4: Cooling bag @4': Reishinki 4'': Heat exchanger (for cooling) 52 heating% tu6: 2nd
Cooling device 7: Pump 8: Tank 9: Cooling/heating device ■1 to ■4: Opening/closing valve ■5: Check valve Sub-agent Patent attorney Shige Okamoto 2 outsiders

Claims (1)

[Claims] A heat exchange loop line for condensation and sublimation of volatile substances is installed facing into the recovery container connected to the main conduit for volatile substances, and a cooling device and a cooling device are installed in the middle of the heat exchange loop line σ). A device for recovering volatile substances, which has a special feature of 6!/ in that each of the 5- and 5-reactors is separately operable.