JPS6220876B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for treating acidic condensation water generated in latent heat type heat exchangers used in oil combustion machines, gas water heaters, and the like.

In conventional oil-burning machines and gas water heaters, 80% of the total combustion heat is used in the primary heat exchanger.
Using a latent heat exchanger from the perspective of energy saving
Combustion appliances have been developed that have thermal efficiencies of over 90%.

When heat exchange is performed only with a primary heat exchanger, nitrogen oxides and carbon dioxide contained in the combustion gas are emitted as they are into the atmosphere, but heat exchange can be performed using a latent heat exchanger. As a result, the temperature of the emitted combustion gas drops significantly to 50-60°C.
Therefore, the moisture contained in the combustion gas condenses, and nitrogen oxides and carbon dioxide are dissolved in this condensed water to become acidic condensed water.

This acidic condensation water corrodes drain pipes, and when discharged to the outside, it causes problems such as melting concrete. As a countermeasure to this problem, a neutralizing agent made of a basic substance is filled in a container having an inlet and an outlet, and acidic condensed water is flowed into the container to effect neutralization. The conventional example will be explained based on FIG. 2.

In FIG. 2, reference numeral 1 denotes the main body of the apparatus for neutralizing acidic condensed water, which has an inlet 2 in the upper part and an outlet 3 in the lower part. Reference numeral 21 denotes a flow path for acidic condensed water provided in the main body 1, and a neutralizing agent 6 made of a basic substance is provided in this flow path 21. 22 is main body 1
This is a bypass flow path for acidic condensed water provided inside.

In the acidic condensation water treatment device configured in this way, since the amount of acidic condensed water produced naturally changes, which changes the combustion amount of the combustion appliance, the acidity (hydrogen ion Concentration index (PH) changes.

In addition, since the neutralizing agent 6 deteriorates from the inlet 2 side, in order to treat a predetermined amount of acidic condensed water, it is necessary to provide a considerable amount or more of the neutralizing agent 6. It had the disadvantage of becoming larger.

The present invention processes acidic condensed water using a main body having an inlet, a plurality of outlet ports provided in the main body at different heights, and a basic substance consisting of a predetermined amount of a tubular body provided in the main body. By configuring the device, the above-mentioned conventional drawbacks are solved.

An embodiment of the present invention will be described below based on FIG.

Note that the same members as in the conventional example will be described with the same reference numerals.

In Figure 1, 1 is the main body of the acidic condensation water treatment device made of acrylic resin, etc., and has an outer diameter of 38 mm, an inner diameter of 24 mm, and a height of 123 mm. , a plurality of outlet ports 3, 4, and 5 having different heights are provided on the sides. The height H of the outlet 3 is 16 mm from the bottom of the main body 1.
The height H' of the outlet 4 is set at a position of 26 mm from the bottom of the main body 1. Also, the inner diameter of the outlet 3 is 2
mm, and the inner diameter of the outlet 4 is 3 mm. Reference numeral 6 is a neutralizer made of a basic magnesium tube installed inside the main body 1, and the weight of this neutralizer 6 is 23 g, the outer diameter is 20 mm, the inner diameter is 12 mm, and the height is
7 is a stand located inside the main body 1 and provided below the neutralizer 6, so that the acidic condensed water 8 inside the main body 1 flows into the inside of the neutralizer 6. 9 is a drain pipe for discharging neutralized condensed water.

In the acidic condensation water treatment device configured as described above, when acidic condensed water with a temperature of 30°C and a pH of 4 flows in from the inlet 2 at a rate of 60ml/H, the neutralizer 6 provided in the main body 1 reduces the pH to 8. The condensed water neutralized to .5 is discharged from the outlet 3.

In addition, when acidic condensed water with a temperature of 30℃ and PH3.5 flows in from the inlet 2 at a rate of 180ml/H, the condensed water is neutralized to a pH of 6 by the neutralizer 6 provided in the main body 1, and the condensed water is neutralized to a pH of 6 at the outlet 3. and 4. When this acidic condensed water with a pH of 3.5 flows into the main body 1 from the inlet 2 at a rate of 180 ml/H, 5 ppm of the neutralizing agent 6 is eluted. Therefore, it takes 26,000 hours for 23g of neutralizing agent 6 to disappear, and if the annual usage time is 1,000 hours, it can be used for 26 years.

Note that the relationship between the inner diameter of the main body 1 and the outer diameter l and inner diameter l' of the neutralizing agent 6 is a factor that greatly influences the neutralization processing ability, so it is necessary to establish an optimal correlation.

By configuring the acidic condensation water treatment device in this way, even if the amount of acidic condensed water 8 generated from the combustion gas changes by changing the combustion amount of the combustion appliance, the neutralizing agent that comes into contact with the acidic condensed water 8 changes. The surface area of the condensed water 6 changes with the amount of the acidic condensed water 8 to neutralize the acidic condensed water 8, and the neutralized condensed water is discharged from the outlet ports 3 and 4, which have different heights, so that the neutralization is achieved. The agent 6 can be discharged in a substantially neutral state without significantly reducing its neutralizing ability.

In addition, by making the neutralizer 6 provided in the main body 1 of the acidic condensation water treatment device into a tubular body, the main body 1
It becomes possible to configure it in a small size.

As is clear from the above description, the acidic condensation water treatment device of the present invention is capable of changing the amount of combustion by providing a predetermined amount of basic material consisting of a tubular body in a main body having a plurality of outlet ports at different heights. Even if the amount of acidic condensation water that occurs changes, the surface area of the basic substance in the tubular body that comes into contact with the acidic condensation water changes, and the acidic condensation water is neutralized and the Since they are each discharged from the outlet, there is little reduction in the ability of the tubular body to neutralize basic substances, and it is possible to provide a small-sized acidic condensation water treatment device with excellent processing ability.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an acidic condensation water treatment apparatus showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of an acidic condensation water treatment apparatus showing a conventional example. 1... Main body, 2... Inlet, 3, 4, 5... Outlet, 6... Neutralizing agent (basic substance).

Claims (1)

[Claims] 1 Treatment of acidic condensed water consisting of a main body having an inlet, a plurality of outlet ports at different heights provided in the main body, and a basic substance consisting of a predetermined amount of tubular bodies provided in the main body. Device.