JPH07217850A - Pcb evaporating device - Google Patents

Abstract

PURPOSE:To provide a PCB evaporating device for non public pollution disposal of PCB by a method wherein the PCB is recovered from a vessel after extracting waste PCB solution from the vessel or the like of an instrument containing PCB or a matter such as an insulating material or the like containing PCB. CONSTITUTION:A PCB evaporating device is provided with a heat resistant and pressure resistant evaporating oven 5 for sealing and receiving vessel/matter 7, a burner 14 for heating the inside of the oven and a transportation pipe 21 for regulating the pressure of PCB gas evaporated in the evaporating oven 5 and transporting the PCB gas into the PCB gas incinerator 13 of next process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for evaporating a PCB containing a PCB (polychlorinated biphenyl) from a PCB-containing object in a disposal process.

[0002]

2. Description of the Related Art For example, a conventional large transformer, a high-voltage condenser, or the like, a container of equipment including a PCB, or the like, is used to withdraw a PCB liquid for disposal, and burned and incinerated at a temperature higher than the decomposition temperature of the PCB to render it harmless. The method is known. Even after the waste PCB liquid is extracted for this purpose, a small amount of PCB is usually attached / remained on the container, etc., and PCB is also contained in other insulating materials. In such a case, the completely pollution-free disposal of these PCBs was extremely difficult both technically and economically.

In order to solve these problems, there is the same method as in the present invention in which the PCB solution adhering to the container of this kind can be recovered and the pollution-free disposal treatment can be carried out separately together with the treatment of the extracted PCB solution. Applicants filed on the same date.

In this method, the container of the equipment after draining the waste PCB liquid is enclosed in a closed evaporation pot and heated to a temperature above the boiling point of PCB using a kerosene burner in a furnace. This is a method in which the PCB is evaporated, and this PCB evaporated gas is burned at a temperature above the decomposition temperature of the PCB using a kerosene burner or the like in a PCB gas incinerator to render it harmless.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a container obtained by draining waste PCB liquid from a container of a device including the above-mentioned PCB or another PC.
PC for extracting PCB as an evaporative gas from an object containing B and sending it to a PCB gas incinerator for disposal
The purpose is to provide a B evaporator configuration.

[0006]

For this reason, in the present invention, this type of PCB evaporator is heat-resistant for hermetically containing the equipment container member from which the waste PCB liquid has been removed and / or the object containing the PCB. A pressure-resistant evaporation tank means, a heating means for heating the inside of the evaporation tank means to evaporate PCB, and a pressure of the generated PCB gas are adjusted and transported to a PCB gas incinerator in the next step. It is intended to achieve the above-mentioned object by being configured so as to have a transportation means.

[0007]

With the above-described structure of the present invention, the PCB adhering to / remaining in the equipment container and the PCB contained in other objects are vaporized and gasified, and the gas is supplied to the PCB gas incinerator in the next step. The PCB gas can be reliably disposed of without pollution.

[0008]

EXAMPLES The present invention will be described below based on examples. FIG. 1 is a schematic configuration diagram of an evaporating furnace and its associated front-rear process equipment, which is one example of a PCB evaporating apparatus such as an equipment container for supplying PCB gas to an incinerator. FIG. 2 is a flow diagram thereof, and FIG. Figure 3 shows an external view of the evaporator.

In FIGS. 1 and 2, 20 is a PCB evaporation furnace including a sealed heat-resistant and pressure-resistant evaporation kettle 5, and 7 is an object (disassembled and adjusted in size) such as a container to which the PCB contained in the evaporation kettle 5 is attached. And / or PCB-containing objects, 4 is a heating burner for the heating, and 13 is an evaporator 5
The PCB evaporative gas discharged from the
It is a PCB gas incinerator for burning. The temperature of each part is 1300 ° C in the burner 4 chamber and 7 ° C in the evaporator 5
The temperature inside the PCB gas incinerator 13 is 1800 ° C. (hold here for 2 seconds).

Reference numeral 1 is an electromagnetic adjustment valve for fuel kerosene that works in conjunction with a temperature sensor 8, 2 is an air valve, 3 is a pilot ignition burner for the burner 4, 6 is a thick iron plate bottom plate of the evaporation pot 5, The inside of the evaporation kettle 5 including is refractory heat-resistant cement for heat insulation is lined. 9 is a check valve, 10 is a PC
B gas pressure adjusting tank, 11 and 12 are PCB respectively
Fuel and high temperature air inlets to the burner 13a (3 is its pilot ignition burner) of the gas incinerator 13, and 14 is an outlet to a treatment device for removing harmful components of exhaust gas to make them pollution-free. 16 is a pressure valve, 17 is a pressure gauge,
Reference numeral 18 indicates a check valve.

Next, in FIG. 3, (a) is a side view of the evaporator 5, and (b) is a view of the inlet 31 of the evaporator 31 in the direction of arrow A. Reference numeral 30 is a reinforcing member of the evaporation pot 5, 31 is a PCB
The reference numeral 32 designates a handle for opening and closing the lid of the object 7 including the.

The evaporating pot 5 containing the PCB-containing object inside thereof gradually raises the temperature in the evaporating pot 5 by an electromagnetic valve 1 and an air valve which are linked to a temperature sensor 8 by a burner 4 to generate gas. It is adjusted so that a fixed amount of gas is produced according to the set pressure of the pressure valve 16. And
Depending on the mixing ratio of the PCB and the type of mixture, the temperature at which each emulsion is generated and the maximum PCB boiling point of 654 ° C are 70.
It is configured so that the temperature can be increased by about 0 ° C.

[0013]

As described above, the PC according to the present invention
According to the B evaporator, waste PCB liquid is effectively evaporated and gasified from PCBs attached to / remaining in the extracted container and PCBs contained in other objects, and then these are transferred to the PCB gas incinerator in the next step. By sending it, it became possible to reliably carry out the pollution-free disposal processing of these PCBs.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of an evaporation furnace and its associated front-back process equipment.

FIG. 2 is a flow diagram of FIG.

[Fig. 3] External view of the evaporator

[Explanation of symbols]

 4 Burner (Heating Means) 5 Evaporator 7 PCB-containing Object 10 Pressure Adjustment Tank 13 PCB Gas Incinerator 13a Burner 20 Evaporator 21 Transport Pipe

Claims (1)

[Claims] 1. A heat-resistant and pressure-resistant evaporation pot means for hermetically containing an equipment container member and / or an object containing the PCB from which waste PCB liquid has been removed, and the inside of this evaporation pot means is heated to evaporate the PCB. Heating means and the generated P
A PCB evaporator comprising: a transportation means for adjusting the pressure of the CB gas and transporting it to the PCB gas incinerator in the next step.