KR200184807Y1 - Vacuum boiler with spiral tube economizer - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a paper-based boiler, the conventional boiler consisting of a gas burner, combustion chamber, liquid chamber, rear combustion chamber, rear combustion chamber, hot water heat exchanger, heating heat exchanger, vacuum pump, before melting, exhaust port and other auxiliary devices By installing a high efficiency coal mill in the rear combustion year of the vacuum boiler of the present invention, the present invention relates to a vacuum boiler which can improve the boiler thermal efficiency, save energy due to the thermal efficiency, and prevent environmental pollution.

2. The technical problem the invention is trying to solve

In the case of using a conventional vacuum boiler, the thermal efficiency of the vacuum boiler is low due to the fact that it does not completely absorb the sensible and latent heat of the submersible included in the combustion gas and the exhaust gas is discharged at a high temperature of 230 ° C or higher. There is a problem that greatly affects the environmental problems caused by the failure to purify CO ₂ and NOx, which are harmful substances in the combustion gas.

3. Summary of solution of design

It is solved by the present invention, which is equipped with a high efficiency coal mill in the rear combustion year of a conventional vacuum boiler.

4. Important uses of the devise

When the high efficiency coal blower is mounted on the trailing edge smoke of the conventional vacuum boiler, the heat efficiency of the vacuum boiler is improved to 99-106% by absorbing almost the sensible heat and latent heat of the water vapor contained in the combustion gas. It can save more than 10% of the energy, and also has an excellent effect of reducing the amount of CO ₂ and NOx, harmful substances contained in the combustion gas to 2% and 20PPM, respectively.

Description

Vacuum Condensing Boiler with Spiral Tube Crusher

The present invention is directed to a vacuum condensing boiler equipped with a spiral tube economizer in the trailing edge of the boiler.

Commonly used boilers include a pipe and a furnace, which are related to labor-related pipe-fired boilers, and a forced circulation boiler, also called a forced-flow boiler, and pump water from one end of a long pipe to a pump. In the middle of the process, the heating, evaporation, and overheating are carried out in the form of a perfusion boiler which is sent to the superheated steam to the other end of the tube, and the evaporation heat transfer surface of the boiler is formed of a plurality of small diameter (30-100 mm) water pipes. A water pipe boiler in which the water of observation is heated outside the tube, the water boils and evaporates at a temperature lower than 100 ° C under vacuum, and the inside of the boiler is vacuumed. Water that is maintained in the heater is circulated up and down in the liquid chamber as the burner burns and is heated to a temperature below the boiling point. And using the formula tube boilers.

Such boilers are not capable of achieving more than 89-96% of thermal efficiency, and a high temperature combustion gas of 230 ° C is discharged through the exhaust port.

In general, the calorific value is based on the low calorific value, and usually the thermal efficiency of the boiler is 89-96% of the low calorific value.

Then, the gas in the fuel roll in use industrial boilers, there is a large amount of CO _2, NOx emitted from the furnace, NOx is formed during this combustion process is now a counter emission strictly according to the load out to be causing photochemical smog It is regulated.

Therefore, in the process of converting chemical energy into thermal energy by combustion, complete combustion has become a basic requirement of the industrial boiler, and in addition, CO ₂ and NOx are somewhat reduced without departing from the conventional maximum content of unburnt in the combustion gas. Whether it can be reduced is an important factor that determines the performance of industrial boilers.

Conventional vacuum boilers are composed of gas burners, combustion chambers, liquid chambers, rear combustion chambers, rear combustion chambers, hot water heat exchangers, heat exchangers for heating, vacuum pumps, before melting, exhaust ports, and other accessories.

Heat and combustion gas are generated due to the combustion of city gas as fuel in the combustion chamber in which the gas burner is mounted. Accordingly, the heat is transferred to the fruit water in the liquid chamber, and the fruit water thus transferred is boiled to evaporate. The fruit water thus evaporated by passing through the hot water supply heat exchanger and the heating heat exchanger located in the upper portion of the liquid chamber under vacuum is condensed and dropped by the phase change of the heat exchange.

Due to the temperature difference of the fruit water heat-exchanging as described above and by the vacuum pump, the liquid chamber maintains the vacuum degree at an appropriate vacuum, and when the steam temperature in the liquid chamber rises to 96 ° C above the upper limit of 88 ° C, the liquid chamber upper part The melted lead is melted into the liquid chamber while releasing lead, which is melted in the same manner as before dissolution, and the internal steam in the liquid chamber is discharged to the outside, so that the vacuum and steam temperature in the liquid chamber are maintained at an upright state.

The combustion gas generated together with the heat in the combustion chamber is discharged to the atmosphere through the exhaust pipe through the water pipe, the rear combustion chamber and the rear combustion chamber installed at the rear of the combustion chamber.

At this time, the temperature of the combustion gas discharged to the atmosphere is a high temperature of 230 ℃ or more, and since the water contained in the combustion gas is discharged through the exhaust port as it is, the thermal efficiency of the boiler is about 89-96%, and also included in the combustion gas The harmful substances CO ₂ and NOx are emitted without being purified, so there was a problem affecting the environmental problems.

Therefore, the object of the present invention is to absorb the sensible and latent heat of water vapor contained in the combustion gas to increase the thermal efficiency of the boiler to 99-106%, and also to reduce CO ₂ and NOx, which are harmful substances in the combustion gas. It is to provide a vacuum condensing boiler equipped with a spiral tube cutter to prevent environmental pollution.

To achieve this purpose, vacuum condensing consists of a gas burner, a combustion chamber, a liquid chamber, a rear combustion chamber, a rear combustion chamber, a hot water heat exchanger, a heating heat exchanger, a vacuum pump, a melting furnace, an exhaust port, and other auxiliary devices. In the boiler, it can be achieved by the present invention equipped with a spiral tube cutter in the rear combustion flue, and installed a magnesium neutralizer, will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a vacuum condensing boiler having a spiral tube cutter according to the present invention.

2 is a perspective view showing a spiral tube of the coal mill shown in FIG.

Figure 3 is a schematic diagram of a spiral tube with a pin according to the present invention.

4 is a schematic diagram of another magnesium neutralizer according to the present invention.

* Explanation of symbols for main parts of the drawings

1: boiler body 2: gas burner

3: combustion chamber 4: liquid chamber

5: fruit tree 6: rear part chamber

7: Rear combustion year 8: Heat exchanger for hot water supply

9: heat exchanger for heating 10: spiral tube cutting machine

11: Spiral Tube 14: Pin

15: vacuum pump 16: before dissolution

17: exhaust port 18: magnesium neutralizing device

19: condensate pipe 20: magnesium container

21: drain pipe 22: magnesium

Referring to FIG. 1, in the vacuum condensing boiler having a spiral tube cutter according to the present invention, a gas burner 2 and a combustion chamber 3 are disposed at a lower end of a boiler, and a liquid chamber 4 is disposed around the combustion chamber 3. In this position, the hot water heat exchanger (8) and the heat exchanger (9) for heating are installed in the upper part of the liquid chamber (4), and the vacuum pump is maintained in the liquid chamber (4) properly and periodically operated at a vacuum degree of 150 mmHg or less. (15) is located above the liquid chamber (4), and the dissolution field (16) is discharged above the heat exchangers (8) and (9), such as the vacuum pump (15), and the combustion chamber is located. (3) A spiral tube (5), rear combustion chamber (6), rear combustion chamber (7), and exhaust port (17) are arranged in order at the rear end, and a spiral tube made of stainless steel (SUS 316) in the rear combustion flue (7). A pelletizer 10 is mounted, and a magnesium neutralizer 18 is condensed in the spiral tube cutter 10. Connected by a tube 19.

Referring to FIG. 2, FIG. 2 shows a spiral tube 11 embedded in the spiral tube cutter 10. The spiral tube 11 according to the present invention has a heat transfer surface in which heat exchange between combustion gas and cold water is twisted, which is larger than the heat transfer area of a conventional coal mill, and thus heat transfer effect about twice as large as that of a coal mill installed in a conventional vacuum boiler. Has

Accordingly, when the cold water passes through the spiral tube 11, the cold water in the spiral tube 11 and the combustion gas passing through the spiral tube breaker 10 undergo heat exchange through the spiral tube 11. At this time, the cold water absorbs the latent condensation and sensible heat of the water vapor contained in the combustion gas, the combustion gas is pushed under the dew point of about 90-40 ℃ temperature passes through the spiral tube pelletizer 10, the exhaust port 17 See also FIG. 1).

As such, the cold water of the spiral tube 11 absorbs about 10% of sensible heat and latent heat of steam, thereby improving the thermal efficiency of the vacuum condensing boiler according to the present invention to 99-106%. In particular, the thermal efficiency of the vacuum condensing boiler according to the present invention is about 99% when the temperature of the combustion gas is discharged to about 90 ℃, the thermal efficiency is about 106% when discharged to about 40 ℃.

And, as shown in Figure 3, in order to increase the heat exchange efficiency, the fin 14 may be attached to the spiral tube 11 according to the present invention. The pin 14 may be selected according to the specifications of the boiler.

Referring to FIG. 4, FIG. 4 shows the magnesium neutralizer 18 shown in FIG. 1 in more detail. The magnesium neutralizer 18 is for purifying the waste water condensed with the water vapor of the combustion gas by heat exchange in the spiral tube breaker 10, the magnesium vessel 20 for neutralizing the spiral tube breaker 10 and the condensed water. Is connected by the condensate pipe 19, and the drain pipe 21 for discharging the wastewater neutralized in the magnesium container 20 to the river is installed under the magnesium container 20.

The magnesium container 20 of the magnesium neutralizing device 18 configured as described above has a size of about 40 L. When the magnesium 22 is melted, magnesium is supplied by a predetermined amount. The reaction equation where H ₂ CO ₃ and HNO ₃ in the condensed wastewater is neutralized by magnesium is as follows.

H ₂ CO ₃ + Mg → MgCO ₃ + 2H ⁺

(Magnesium Carbonate)

HNO ₃ + Mg → MgNO ₃ + 2H ⁺

(Magnesium Nitrite)

As described above, H ₂ CO ₃ and HNO ₃ react with magnesium (22) to neutralize the wastewater is discharged to the river. At this time, the magnesium 22 in the magnesium container 20 is melted while changing to MgCO ₃ , MgNO ₃ .

In general, the thermal efficiency of the boiler is usually 9550 kcal for the low heat, and according to the present invention, the thermal efficiency of the boiler is up to 89-96% based on the low heat. On the basis of the thermal efficiency of about 79-86%, combined with 10% thermal efficiency of sensible heat and latent heat recovery, about 99-106% of heat efficiency based on the low calorific value, and high calorific value Based on this, thermal efficiencies of about 89-96% occur.

In addition, in the vacuum boiler of the present invention, since the fuel is used as a city gas, unlike coal and oil, there is no sulfur (S) component that corrodes metals under dew point, and it is always completely burned soot is not generated. In addition, when the combustion gas temperature passing through the spiral tube breaker falls below the dew point, condensate is generated on the heat transfer surface, and the condensate is discharged into the stream by neutralizing the environmental standard PH 6.5-7 by the magnesium neutralizer to reduce the pollution of the stream. It has an excellent effect on environmental protection.

The vacuum condensing boiler in this paper is used in high-rise buildings (10m), homes, bathhouses, sports centers, and the like.

Claims (2)

A gas burner 2 and a combustion chamber 3 are disposed at a lower diagnosis of the boiler, and a liquid chamber 4 is positioned around the combustion chamber 3, and a hot water heat exchanger 8 and a heat exchanger for heating are located above the liquid chamber 4. (9) is installed, a vacuum pump 15, which is properly maintained in the liquid chamber 4 and periodically operated at a vacuum degree of 150 mmHg or less, is located above the liquid chamber 4, and the vacuum pump 15 As shown in FIG. 3, a dissolution field 16 for discharging steam is positioned above the heat exchanger 8 and 9, and a water pipe 5, a rear combustion chamber 6, and a rear combustion chamber 7 are located at the rear of the combustion chamber 3. In the vacuum condensing boiler in which the exhaust port 17 and the exhaust port 17 are sequentially arranged, a spiral tube cutter 10 made of stainless steel is mounted on the rear combustion flue 7 so that cold water in the spiral tube 11 is included in the combustion gas. The temperature of the combustion gas below the dew point by absorbing the condensation The vacuum condensing boiler having a spiral tube cutter, characterized in that discharged to, the magnesium tube neutralizer (18) is connected to the spiral tube cutter (10) by a condensate pipe (19). According to claim 1, wherein the magnesium neutralizer 18 is a magnesium container 20 for neutralizing the condensed water of the spiral tube cutter 10 is connected to the spiral tube cutter 10 by the condensate tube 19, Spiral tube characterized in that the drain pipe 21 for discharging the waste water neutralized in the magnesium container 20 to the stream is installed in the lower portion of the magnesium container 20, neutralizing the waste water to PH 65-7, the environmental standard value Vacuum Condensing Boiler with Blower.