JPS595703Y2 - Caustic soda solution processing equipment - Google Patents

Description

[Detailed description of the invention] This invention connects one terminal of the secondary side of the transformer to a dot-shaped electrode placed inside a grounded caustic soda solution concentration can, and connects one terminal of the secondary side of the transformer to the dot-shaped electrode. This relates to a caustic soda solution processing apparatus characterized in that a high voltage is applied and the other terminal of the transformer is grounded.
By applying a high electric field of about KV, alternating current or direct current, or a combination of these, it is possible to locally concentrate a strong electric field to the caustic soda solution, promote concentration, and reduce most of the power consumption for setting a high electric field. It's a pain.

Conventionally known chemical engineering processing equipment that utilizes electric fields applies a large number of annular electrodes and uses the generated electric field curtain to perform chemical processing such as reaction, absorption, evaporation, and drying. However, as a result of various experimental studies, the present inventor has developed the present invention which does not have these drawbacks.

In the present invention, as a means of applying a high electric field to the caustic soda solution, the concentration can is grounded and a dot-shaped bare or insulated point is placed 5 to 3 Qmm above the surface of the caustic soda solution filled in the concentration can. 3 on the coated electrode or the insulated base width pole placed in the liquid.
It is obtained by applying a high voltage of ~50 KV, preferably 5 to 3 Q KV, and the effective area of one electrode is about 100 to 300 mm in radius, so multiple electrodes can be arranged depending on the area of the caustic soda solution. It is to be established.

In addition, instead of placing the electrodes on the surface of the caustic soda solution, they may be completely insulated and placed in the caustic soda solution, and as a high voltage power supply, a commercial power of 50 Hz, 60 Hz or higher is required. Frequency power, DC power may be used instead of AC power, and AC high voltage is 3 to 50K.
By applying a superimposed direct current voltage, preferably about 5 to 3 Q KV, to the electrode, the concentration effect can be further increased or the concentration time can be shortened. Furthermore, a permanent magnet or an electromagnet is installed on the outside of the concentration can. When a magnetic field is set within the caustic soda solution, the concentration effect can be improved.

Even if the voltage is set to 3Q KV or higher, the concentration effect cannot be significantly improved.

The present invention will be explained below with reference to the apparatus shown in Figs. 1 and 2. A caustic soda solution 2 is placed in a grounded metal concentration can 1
A dot-shaped electrode 3 is filled with liquid and placed 20 mm above the liquid surface.
and one terminal 6 of the secondary side 5 of the transformer 4, and the other terminal 7
is grounded, and a commercial AC power source is connected to the primary side 8 of the transformer 4.

9 is a constant calorific value heater.

In the apparatus shown in Fig. 1, caustic soda solution 2 with a concentration of 10%
Applied high voltage A (K■), evaporation amount B, (m1), increase rate of evaporation amount C (%), concentration D (%), and liquid temperature E when 540 g is continuously heated for 45 minutes by heater 9 ('C) was as shown in Table 1 below.

In the apparatus shown in Fig. 2, a caustic soda solution 5 with a concentration of 20% is
000 g was continuously heated for 105 minutes by the heater 9, the applied voltage A (K■), the amount of heat generated B (m1), the rate of increase in evaporation amount C (%), the concentration D (%), and the liquid temperature E (' C) was as shown in Table II.

In the present invention, one terminal of the secondary side of the transformer is connected to one or more dot-shaped electrodes arranged in a grounded caustic soda solution concentration can, and a high voltage of 3 to 50 KV is connected to the dot-shaped electrode. Since this is a caustic soda solution treatment device in which a voltage is applied and the other terminal of the transformer is grounded, the concentration effect can be increased by applying a high electric field to the caustic soda solution with a simple device during the concentration process. Moreover, since no current flows through the caustic soda solution, the power consumption for setting a high electric field is almost the same as the internal loss of a transformer, making it extremely economically advantageous.

[Brief explanation of drawings]

1 and 2 are cross-sectional views of two types of devices. 1... Concentration can, 2... Caustic soda solution, 3... Electrode.

Claims (1)

[Scope of utility model registration request] One terminal of the secondary side of the transformer is connected to one or more dot-shaped electrodes arranged in a grounded caustic soda solution concentration can, and a high voltage of 3 to 50 KV is applied to the dot-shaped electrode. death,
A caustic soda solution processing device, which is constructed by grounding the other terminal of the transformer.