JPH11300341A - Distillation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To start a distillating operation quick in starting up by quickly feeding a new treated water till a fixed water level after discharging all water in a tank. SOLUTION: An electrical regenerative continuous ion exchanger 1 connecting a water feeding plug 5 and having a reverse osmotic membrane 13, a treated water storage tank 7 temporarily storing the treated water treated with the electrical regenerative continuous ion exchanger 1, a boiler 33 boiling the treated water sent from the treated water storage tank 7 with a heater 41, a condenser 19 condensing a steam generated at an inside of the boiler 33 by boiling and discharging as a distilled water and a distilled water storage tank 57 temporarily storing the distilled water from the condenser 19 are provided, and the treated water in a fixed water level is always stored in the treated water storage tank 7 so as to rapidly correspond to the boiler 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a distillation apparatus.

[0002]

2. Description of the Related Art In general, a distillation apparatus is generally described as follows. Prior to a distillation step, a pre-filter and an ion-exchange resin are used for the treatment, the treated water is boiled in a boiler, and the generated steam is condensed in a condenser. , And is taken out as distilled water.

[0003]

The pretreatment of the distillation step is performed by a prefilter and an ion exchange resin.
Ion exchange resins and the like have a lifetime, and if not monitored constantly, the water quality will decrease, and the required purity cannot be ensured. In addition, there were other problems such as promoting adhesion of scales in the boiler.

Accordingly, the present invention provides a distillation apparatus which does not require maintenance, can obtain treated water stably over a long period of time, and can promptly supply treated water of a constant quality. It is an object.

[0005]

In order to achieve the above object, the present invention relates to an electric regeneration type continuous ion exchanger connected to a water faucet and having a reverse osmosis membrane, and treated with an electric regeneration type continuous ion exchanger. A treated water storage tank for temporarily storing the treated water, a boiler for boiling the treated water sent from the treated water storage tank by a heater, and a condenser for condensing steam generated by boiling in the boiler and extracting the distilled water, A distilled water storage tank for temporarily storing distilled water from the condenser.

According to such a distillation apparatus, the treated water treated by the electric regeneration type continuous ion exchanger is temporarily stored in the treated water storage tank and then supplied to the boiler.

[0007] The treated water sent into the boiler is boiled by a heater, and the generated steam is condensed by a condenser, temporarily stored in a distilled water storage tank, and then taken out as needed.

In this case, all the treated water in the boiler is periodically drained in order to keep the water quality constant. After drainage is completed,
The treated water is supplied from the stored treated water storage tank to the tank to a certain level. As a result, prompt treatment of the treated water into the tank becomes possible, and a distillation operation with a quick rise can be performed.

Further, in the present invention, in order to save the cooling water for cooling the condenser, the waste water for removing the water containing impurities to the outside by the electric regeneration type continuous ion exchanger is provided.
Used as auxiliary cooling water for cooling the condenser.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawing of FIG.

In FIG. 1, reference numeral 1 denotes an electric regeneration type continuous ion exchanger, and an inlet 3 has a water tap 5 and an outlet 7.
Are in communication with the treated water storage tank 7, respectively. The electric regeneration type continuous ion exchanger 1 includes a pretreatment filter 9, a pump 11, a reverse osmosis membrane 13, an ion exchange membrane 15, and a small amount of ion exchange resin 17.

The pretreatment filter 9 functions to remove residual chlorine and the like from tap water supplied from the water tap 5.

The pump 11 operates at a constant water pressure so that the reverse osmosis membrane 1
Function to send to 3.

The reverse osmosis membrane 13 changes the flow from the concentrated solution to which the pressure is applied from the concentrated solution to the dilute solution to reduce the submicron-order microorganisms, organic substances and inorganic ions by 90 to 99%.
Remove. For the semipermeable membrane, a polyamide system, a cellulose acetate system, or the like is used to allow water molecules or lower molecular substances to pass therethrough. All raw water cannot be collected as treated water. This is because the impurities removed by the reverse osmosis membrane 13 flow from the membrane surface, and if not drained, the concentration on the raw water side increases and the recovery efficiency decreases. Further, the scale is easily formed, and the life of the reverse osmosis membrane 13 is reduced. In addition,
Increasing the amount of drainage makes it difficult to scale, but the recovery rate decreases, so the recovery rate is about 40% as a measured value.

The waste water from which impurities flow from the membrane surface is used as auxiliary cooling water for cooling the condenser 19 described later.

The ion-exchange membrane 15 is electrically treated continuously to remove inorganic ions with the ion-exchange resin 17, requiring no maintenance, and the recovery rate is about 60% as a measured value. .

The treated water storage tank 7 is for temporarily storing treated water treated by the electric regeneration type continuous ion exchanger 1. The treated water storage tank 7 has an air filter 21 and a drain valve 23 for draining water and overflows. In addition to the overflow port 25 for always ensuring a constant water quality, a water level drop detection float switch 27, a distillation start output float switch 29, and a water level abnormality detection float switch 31 are provided respectively.

The water level drop detection float switch 27 detects that the water level in the tank has dropped abnormally, and stops the distillation operation based on the detection signal.

The distilling start output float switch 29 detects that the inside of the tank has reached a certain water level, and a boiler water supply solenoid valve 35 for supplying water into the boiler 33 based on the detection signal.
Open.

The water level abnormality detection float switch 31 detects an abnormal liquid level rising above the overflow port 25 and, based on the detection signal, detects the electric regeneration type continuous ion exchanger 1.
Stop the operation of.

The boiler 33 communicates via a communication pipe 37 so as to be always at the same level as the liquid level of the float cylinder 35, and a plurality of ceramic heaters 41 having a built-in detection sensor 39 are attached.

The float cylinder 35 has a boiler water level control float switch 43 for detecting the water level in the boiler 33 at a specified liquid level, a heater control float switch 45 and a boiler overheat detection float. Switch 4
7 are provided.

Float switch 43 for controlling boiler water level
Functions to turn on the ceramic heater 41 according to the detection signal when it detects that the liquid level has reached a predetermined level, so that the distillation operation is started.

The float switch 45 for controlling the heater is
When the liquid level falls below the specified water level and is exposed from the liquid level,
The ceramic heater 41 functions to be turned off based on the detection signal, thereby preventing the ceramic heater 41 from being excessively heated.

Float switch 47 for detecting overheating of boiler
When the pressure in the boiler 33 rises abnormally for some reason and pushes up the liquid surface in the float cylinder 35 and comes into contact with the float switch 47, the ceramic heater 41 is turned off based on the detection signal. .

The detection sensor 39 includes a ceramic heater 41
The heater temperature is detected as heater temperature information of the ceramic heater 41, and the ceramic heater 4
1 is controlled and managed at a constant temperature.

The condenser 19 is connected to the boiler 33,
A main cooling pipe 51 that condenses steam by using cooling water sent through a cooling water solenoid valve 49 to form distilled water, and an auxiliary cooling that condenses steam by using drainage from the electric regeneration type ion exchanger 1 to produce distilled water. A pipe 53 is provided, and water that has passed through the main cooling pipe 51 and the auxiliary cooling pipe 53 is drained to the outside from a drain pipe 55. On the other hand, the distilled water distilled in the condenser 19 is sent to the distilled water storage tank 57.

The drain pipe 55 is provided with a temperature detection sensor 59 for detecting a drain temperature, and a detection signal from the temperature detection sensor 59 is input to the control unit 61.

The control unit 61 controls the opening and closing of the cooling water solenoid valve 49 based on the temperature information from the temperature detection sensor 59 in addition to the on / off control of the electric regeneration type continuous ion exchanger 1.

Here, based on the drainage temperature of about 45 ° C., in the following cases, the cooling electromagnetic valve 49 is closed to save the cooling water flowing through the main cooling pipe 51. By opening the valve 49 and allowing the cooling water to flow through the main cooling pipe 51, the cooling water for cooling the condenser 19 is obtained.
Piping damage is reduced.

A plurality of water level detection switches S1 to S5 are provided in the distilled water storage tank 57, and the distilled water in the distilled water storage tank 57 can be taken out from the sampling port 63 by driving the pump 61. Has become.

The water level detection switches S1 to S5 are arranged vertically. The uppermost water level detection S1 is a switch for detecting that the inside of the distilled water storage tank 57 is full by turning on, and based on the detection signal, the ceramic heater 41 is turned off to stop the distillation operation. The lowest water level detection switch S5 is a switch for detecting that the amount of distilled water is low when it is turned on. When the switch signal is activated, even if the pump 61 for extracting distilled water is operated. It is not driven.

Incidentally, 65 is a secondary condenser, 67 is a pump 6
9 is an outlet for taking out treated water from the treated water storage tank 7 by driving the 9.

According to the distillation apparatus configured as described above,
When the electric regeneration type continuous ion exchanger 1 is turned on, the treated water is stored in the treated water storage tank, and when the distillation start output float switch 29 is turned on, the water supply solenoid valve 35 is opened. As a result, a predetermined water level is secured in the boiler 33 and the ceramic heater 41 turned on by the boiler water level control float switch 43 in the float cylinder 35.
Starts the distillation operation. At this time, the ceramic heater 4
In 1, the heater temperature is monitored by the detection sensor 39.
At the same time, the water in the boiler 33 is heated by the ceramic heater 41, and the generated steam is condensed by the cooling water flowing through the auxiliary cooling pipe 53 in the condenser 19 to become distilled water. At this time, the cooling water solenoid valve 49 managed by the temperature detection sensor 59 is closed, so that the cooling water from the water tap 5 does not flow through the main cooling pipe 51, thereby saving water.

On the other hand, when the temperature of the drain water flowing through the drain pipe 55 exceeds a predetermined temperature, the cooling water solenoid valve 49 is opened, and the cooling water flows through the main cooling pipe 51. Thereby, the main cooling pipe 51
The steam is condensed by the cooling water flowing through the auxiliary cooling pipe 53 and at the same time, the drainage temperature is lowered. The distilled water condensed in the condenser 19 is sent into the distilled water storage tank 57, and then is taken out from the sampling port 63 as needed.

Next, in order to keep the water quality in the tank 33 constant, all of the internal treated water is drained at regular intervals, but after the drainage is completed, the treated water in the treated water storage tank 7 is removed from the boiler. 33. As a result, it is possible to quickly supply water to a certain water level, and to perform a distillation operation with a fast rise.

[0037]

As described above, according to the distilling apparatus of the present invention, in order to keep the water quality constant, after all the water in the tank is drained at regular time intervals, fresh treated water is kept at a constant water level. Can be supplied quickly. As a result, a distillation operation with a fast rise can be performed.

Further, since the waste water that has passed through the electric regeneration type continuous ion exchanger can be used as cooling water for cooling the condenser, it is possible to save water flowing through the main cooling pipe.

[Brief description of the drawings]

FIG. 1 is a piping diagram of the entire distillation apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric regeneration type ion exchanger 5 Water tap 7 Treated water storage tank 13 Reverse osmosis membrane 19 Condenser 33 Boiler 57 Distilled water storage tank

Claims (2)

[Claims] 1. An electric regeneration continuous ion exchanger connected to a water tap and having a reverse osmosis membrane, a treated water storage tank for temporarily storing treated water treated by the electric regeneration continuous ion exchanger, and a treated water A boiler in which the treated water sent from the storage tank is boiled by a heater, a condenser that condenses steam generated by boiling in the boiler and extracts the distilled water, and a distilled water storage tank that temporarily stores distilled water from the condenser. A distillation apparatus, comprising: 2. The distilling apparatus according to claim 1, wherein waste water for removing water containing impurities to the outside by the electric regeneration type continuous ion exchanger is used as auxiliary cooling water for cooling the condenser. .