KR101209855B1 - Steam generation and waste gas treating apparatus using waste material - Google Patents

Abstract

The present invention relates to a steam production and exhaust gas treatment apparatus using waste, the main configuration of which is an oil service tank 99 for supplying oil made from organic waste such as waste tires and waste vinyl, and the oil service tank The boiler 110 receives oil from the boiler 110 and burns the oil to generate steam, the steam header 106 supplied with the steam generated by the boiler 110, and the steam header 106. Boiler feed pump for drying the object to be dried by steam heat using steam, a condensate tank 112 for receiving the recovered steam used in the dryer 40 as condensate, and condensate in the condensate tank 11 Recharging unit 116 to accommodate the condensed water by the supply by the 115 to recover to the boiler 110, and a bag filter installed to remove dust from the gas exhausted from the above-described filter 116 ( 120, and the wet scrubbing tower 121 is installed to clean the exhaust gas passed through the bag filter 120, the supply water 123 is supplied and the washing water circulation pump 124 is installed to circulate the washing water. And, it is installed in the wet washing tower 121, characterized in that it comprises a smoke prevention heat exchanger 111 using the heat of combustion of the boiler 110, the boiler 110 in the sludge storage tank 50, EPR carbonization Combustible gas generated from the gas 80, the sludge carbonizer 70, the waste sludge dryer 40, the sewage treatment plant 141 is configured to be supplied to the boiler 110 to be used as the heat of combustion with odor removal In the filter dust collector 120, an activated carbon storage tank 122 and a slaked lime storage tank 125 are installed, and activated carbon and slaked lime are supplied by spraying to remove SOx, HCl, and dioxins. The condensate tank 11 2) is characterized in that the soft water supply pump 119 is connected to supply the soft water treated water from the water softener 118 to the condensate tank 112, the filter dust collector 120 and the wet washing tower ( 121) is characterized in that the exhaust temperature of the combustion gas is 200 degrees Celsius or less to prevent the resynthesis of dioxin, the boiler 110 is connected to the hot air dry heat exchanger 108 is connected to the boiler 110 It is configured to receive the heat, the hot air drying heat exchanger 108 is connected to the degasser 114 is characterized in that configured to help the degassing action of the degasser 114 by hot air, the wet washing tower 121 The baffles 126 bent in a zigzag shape are formed side by side, the projections 130 are formed on the surface of the baffles 126, and the washing water supply pipe 129 is installed inside the wet cleaning tower 121. And the washing water nozzle 128 is provided in the supply pipe 129. It is characterized in that configured so that washing water sprayed.

Description

Steam production and waste gas treatment system using waste {STEAM GENERATION AND WASTE GAS TREATING APPARATUS USING WASTE MATERIAL}

The Extended Producer Responsibility (EPR), which was introduced on June 1, 2000, is responsible for the collection and recycling of products by producers and importers, and is currently being implemented on 10 items including TVs and refrigerators. .

At present, various wastes generated during the life including various industrial facilities are recycled and recycled at the recycling facility, but most of them are incinerated. More reprocessing facilities are needed

Therefore, the present invention uses waste oils and combustible gases generated in the treatment of sewage treatment sludge, sludge carbonization processor, sludge dryer, and other wastes, which are difficult to recycle, as a heat source for operating a boiler, which can efficiently treat them. Has developed a plant for the steam generator and its exhaust treatment.

The present invention efficiently concentrates fuelable heat sources generated after sewage treatment and various waste treatments in a boiler, and also incinerates odors generated at various facilities along with boiler combustion, and efficiently recycles energy generated in the boiler. Developed a system that can

For example, by injecting exhaust gas from drying facilities such as domestic sewage treatment waste, waste tires, waste vinyls, and other various kinds of household waste, dry carbonization plant, and EPR carbonization plant into a boiler, and burning them at a high temperature. It is composed of optimal intensive structure to reduce dust consumption and condensation by minimizing dry exhaust gas duct line and to reduce power consumption by minimizing pressure loss.

In the conventional case, for example, the problem of air pollution due to the absence of an additional dust removal system in the trouble of dust collector in the filtration device of the exhaust gas, there is a problem that the smell remains even though the exhaust gas is cleaned. Is a semi-dry system, which causes clogging of the bag filter and white smoke occurs in the flue of flue gas at atmospheric temperature of 15 degrees Celsius due to condensation of moisture in wet gas during autumn

The present invention prevents the occurrence of white smoke in the exhaust gas, and collects all combustible waste energy and burns it in a boiler so that the combustion heat of the boiler is available to each place and the waste gas recovered is efficiently treated. The whole system built a very energy efficient installation

The main configuration according to the present invention, the oil service tank 99 for supplying oil made from organic wastes such as waste tires and waste vinyl, and the oil is supplied from the oil service tank 99 to burn oil to burn steam. Boiler 110 for generating a, a steam header 106 receives the steam generated from the boiler 110, and a dryer for drying the object to be dried by steam heat using steam supplied by the steam header 106 ( 40, the condensate tank 112 for receiving the recovered steam used in the dryer 40 as condensate, and the condensate in the condensate tank 11 by condensed water by feeding the boiler feed pump 115 to the boiler 110. Cleans the exhaust gas through the filter 116, the filter dust collector 120, and the filter dust collector 120, which are installed to remove dust from the gas exhausted from the fuel crusher 116. Installed to do so, In addition to being supplied with the supply water 123, a washing water circulation pump 124 is installed and installed in the wet washing tower 121 and the wet washing tower 121 for circulating the washing water, using the heat of combustion of the boiler 110. It characterized in that it comprises a smoke prevention heat exchanger (111), the boiler 110, sludge storage tank 50, EPR carbonizer 80, sludge carbonizer 70, waste sludge dryer (40), sewage Combustible gas generated in the treatment plant 141 is configured to be supplied to the boiler 110 to be used as the heat of combustion with odor removal, the filter dust collector 120, activated carbon storage tank 122 and calcined lime storage tank (125) is installed, and activated carbon and hydrated lime by spraying, characterized in that configured to remove SOx, HCl and dioxin, the condensate tank 112 is a soft water supply pump 119 is connected to the water softener Softened water from (118) It is characterized in that it is configured to feed to the condensate tank 112, in the bag filter 120 and the wet washing tower 121 to the exhaust temperature of the combustion gas to 200 degrees Celsius or less to prevent the resynthesis of dioxin. It characterized in that the configuration, the boiler 110 is connected to the hot air dry heat exchanger 108 is configured to receive the heat of the boiler 110, the hot air dry heat exchanger 108 is connected to the degasser 114 Characterized in that it is configured to help the degassing action of the degassing apparatus 114 by hot air, the wet washing tower 121 is formed in a zigzag-shaped baffle 126 is formed side by side spaced apart, the baffle 126 The projection 130 is formed on the surface, and the washing water supply pipe 129 is installed inside the wet cleaning tower 121, and the washing water nozzle 128 is formed in the supply pipe 129 to be configured to spray the washing water. It is done.

The present invention provides an efficient treatment system for a complex waste including waste resin capable of operating a boiler by minimizing the supply of external heat sources.

In addition, according to the present invention, two-stage wet scrubber tower is additionally configured when the filter dust collector is troubled, so that it is possible to prevent the air pollution incident caused by some failure of the equipment in advance by exhibiting complementary dust removal capability.

In addition, according to the present invention, it is possible to prevent the clogging phenomenon of the filter bag due to the wet by the use of dry lime in the bag filter, and also to prevent the moisture in the exhaust gas by installing a smoke prevention heat exchanger 111 in the wet cleaning tower 121. Condensation and white smoke can be prevented and odor removal is surely achieved by the baffle forming structure in the washing tower.

In addition, according to the present invention, the generated exhaust gas generated in the drying facility, the dry carbonization facility, and the EPR carbonization facility is generated from the dryer 40, the sludge carbonizer 70, the EPR carbonizer 80, and the like. The exhaust gas is injected into the boiler 10 and burned at a high temperature, so that a high concentration of odor of dry exhaust gas can be completely removed by high temperature oxidation of the boiler.

In addition, the overall configuration of the present invention has the advantage that the heat recovery efficiency is high and the installation area can be minimized due to the installation structure.

1 is an overall configuration diagram of an apparatus according to the present invention.
2 is a schematic diagram of a boiler water supply and condensation system
3 is a view for explaining the baffle 126 and the washing water supply structure in the wet cleaning tower 121.

Hereinafter, the present invention will be further described with reference to the accompanying drawings

As shown in FIG. 1, the exhaust gas generated from the drying facility, the dry carbonization facility, and the pyrolysis facility, the EPR carbonization facility, that is, the dryer 40, the sludge carbonizer 70, the EPR carbonizer 80, and the like. By injecting the exhaust gas generated from the boiler 110 is burned at a high temperature. Thus, high concentration odor of dry flue-gases can be completely removed by high temperature oxidation of the boiler. In addition, the odor in the sludge storage tank 50 and, in some cases, the building may also be blown to the boiler 110 by the combustion air supply fan 143 to remove the odor by combustion air from the boiler 110.

On the other hand, noxious gas, dust, and the like, which are derived from the sewage treatment plant 141, are also introduced into and removed from the boiler 110 via the collision-type dehumidification tower 140. The neutralizing agent used in the collision type dehumidification tower 140 uses caustic soda, which is an agglutination aid alkaline agent, to increase acid gas removal efficiency.

The boiler 110 uses a water pipe boiler. Water tube boilers generate wet steam and have a large amount of evaporation. The water pipe boiler is suitable for high pressure due to the small drum diameter, short heat transfer time due to large heat transfer area, high heat recovery rate, good operation efficiency even in high concentration dust, high evaporation amount, suitable for large capacity, fast circulation of boiler water, fast and efficient High and small footprint

On the other hand, the furnace-related boiler may also be used, but the evaporation rate is high, but the corrosion resistance is easy to attach the scale, and the structure is complicated, so that cleaning and repair inspection are difficult.

Boiler 110 feed water and condensate recovery system is shown in FIG.

As shown in FIG. 2, a very high temperature of heat may be recovered from the dryer 40, but the outlet temperature of the dryer 40 is about 167 degrees Celsius, so that the hot condensate is recovered to the condensate tank 112 and deaerated. It is sent to the deaerator 114 by the pump 113 and deaerated, and is sent to the coal blower 116 by the boiler feed water pump 115 and is introduced into the boiler 110. Thus, the high temperature recovery rate and energy saving effect are very high since the high temperature condensed water is recovered and reused in the boiler 110.

And the hot air drying heat exchanger 108 is optionally connected to the boiler 110 to enable the hot air drying function using the heat of the boiler, the hot air is sent to the deaerator 114 to the deaerator 114 To help degassing

The condensate tank 112 is connected to the water softener 118 and is supplied by the soft water injection pump 119 to improve the boiler water quality. The water softener 118 removes hardness components such as calcium and magnesium in raw water by using a cation exchange resin to generate and supply soft water so that scale is not formed in the piping facility and the boiler tube.

According to the above configuration, the amount of heat recovered from the dryer 40 can greatly increase the temperature of the boiler water, thereby increasing the amount of steam generated, thereby maximizing energy recovery efficiency.

The outlet temperature of the exhaust gases in the boiler should be kept below about 200 degrees Celsius. Because it is a regeneration reaction of dioxin when it is over 200 degrees Celsius, it should be below the temperature condition.

The dust removal system of the exhaust gas which passed through the boiler 110 is as follows.

SOx, HCl is injected by the spray to the filter dust collector 120 of the slaked lime by the lime storage tank 125, and is removed by the filter dust collector 120 and the two-stage wet washing tower 121, dioxins are activated carbon storage tank ( Dioxin particles are collected and removed by spraying activated carbon by the activated carbon supply provided in 122) and also by the bag filter 120. As already mentioned above, dioxins should be maintained at combustion gas temperatures below the resynthesis temperature, ie below 200 degrees Celsius.

The supply of hydrated lime is provided to supply the dried powdered lime by installing the hydrated lime storage tank 125. The reason for the dried powdered lime is to prevent clogging in the filter dust collector 120 by wetting. The treatment efficiency of the filter dust collector 120 is 20 ppm of SOx and HCl (acidic gas), respectively, and the concentration is 20 ppm or more, and dioxins are 0.1 mg-TEQ / Nm3 or less and dust is 10 mg / Nm3 or less. Becomes

Filter bag 120 using a bag filter has advantages over wet electrostatic precipitator or dry electrostatic precipitator, which can maintain stable processing efficiency even under instantaneous overload, and can process up to branching of good conductors such as carbon fiber, and have excellent dust collection efficiency. high. On the other hand, wet electrostatic precipitator has high dusting cost and high equipment cost, and dry electrostatic precipitator has no effect of removing good conductor dust such as carbon fiber and cannot cope with the increase of instant load.

 Dust is also removed firstly from the filter dust collector 120, and secondly, the dust is again removed from the wet washing tower 121, the dust removal effect is completely removed 99.99%. Toxic gas is most efficient because the removal by the wet cleaning tower 121 can be removed more than 98%.

In addition, the two-stage wet washing tower 121 and the bag filter 120 may be complemented in the event of a temporary failure due to the two-stage process, and the treatment efficiency of the dry and wet double removal system may be very high. Excellent removal efficiency of acid gas, dust, dioxin, etc.

In summary, the acid gas containing dust and hydrochloric acid is firstly removed from the bag filter 120 and secondly removed from the wet scrubbing tower 121, and dioxin is firstly removed by activated carbon and secondly, the inlet bag filter 120 is used. Is removed secondarily. As all the pollutants are removed in the first and second stages, as well as the perfect contaminant removal, as described above, even if one device fails, the other side complements each other to prevent air pollution. can do

The two-stage wet washing tower 121 has a structure in which a washing water circulation pump 124 is installed to circulate the washing water and supply the supply water 123 for washing, so that the exhaust gas is cooled and absorbed firstly and secondly. It is treated by reaction by collision and absorption. Thus, HCl and SOx treatment of the final exhaust gas can be processed by 99%.

In addition, in order to prevent white smoke of the exhaust gas discharged to the upper part of the washing tower, as illustrated in FIG. 1, the smoke prevention heat exchanger 111 is installed in the wet cleaning tower 121. This prevents condensation and white smoke of significant amounts of water in the exhaust gases.

The configuration and connection relationship for the smoke prevention heat exchanger 111 will be described in more detail with reference to FIG. 2.

The smoke prevention heat exchanger (111) is connected to the steam header (106) and the distribution pipe of the boiler (110) and is supplied to each required part, and the part is sent to the smoke prevention heat exchanger (111). The heat exchange is carried out in 121, and the steam recovered thereafter is degassed via the degasser 114, and then recovered by the boiler feed pump 115 to the boiler 110 via the blower 116. By installing the smoke prevention heat exchanger 111 and injecting dilution air, the exhaust gas is heated up to about 85 degrees Celsius by heating, and the moisture is dried by about 15% to 6% moisture. Due to the effect, it is possible to prevent white smoke even if the air temperature is about 0 degrees Celsius. Therefore, it is possible to prevent white smoke even in winter, not below freezing temperatures.

For reference, Figure 3 is a structural diagram of the inner main portion of the wet washing tower 121.

As shown in the drawing, when the combustion gas 127 passes between the baffles 126 formed in a zigzag to increase the gas contact area, the washing water nozzle 128 of the washing water supply pipe 129 is shown. ), The washing water is sprayed at high pressure. The sprayed washing water collides with the exhaust gas to absorb and remove acid gas and mist.

Many projections 130 are formed on the surface of the baffle 126, so that the exhaust gas colliding with the projections 130 is vortexed, and the acidic gas removal efficiency is further increased due to the increase in the humidity efficiency due to the increase in the contact time between the washing water and the gas. The structure in which the protrusions 130 are formed on the baffle 121 has no advantages of clogging due to contaminants, a high effect of removing mist from moisture containing combustion gas, and a constant efficiency without changing the height of the operating load.

According to the treatment facility according to the present invention as described above, the carbon monoxide is removed to 20ppm or less of the allowable discharge standard in the boiler 110, hydrogen chloride and sulfur oxide is added to the slaked lime by the slaked lime storage tank 125, and the reaction filter dust collector 120 ), The wet cleaning tower 121 is removed to below the discharge allowance standard, dioxin is removed from the activated carbon supply facility and the filter dust collector 120 by the activated carbon storage tank 122, the soot is filter dust collector 120 and wet cleaning. Since the odor from the tower 121 and the odor is completely removed from the boiler 110, it can be concluded that a complete treatment to the extent that the emission allowance standards of the Air Quality Preservation Act can be fully satisfied.

50 Sludge Storage Tank 70 Sludge Carburetor
80 EPR Carbide 106 Steam Header
108 Hot Air Dry Heat Exchanger 110 Boiler
111 White smoke prevention heat exchanger 112 Condensate tank
116 Cutting Machine 118 Water Softener
119 Soft water supply pump 120 Filter dust collector
122 Activated Carbon Storage Tank 125 Limestone Storage Tank
126 Baffles 127 Combustion Gases
128 Rinse Nozzle 129 Supply Pipe
130 turning

Claims (7)

An oil service tank (99) for supplying oil made from organic waste,
A boiler (110) generating oil by burning oil by receiving oil from the oil service tank (99);
Steam header 106 receives the steam generated in the boiler 110,
A dryer 40 for drying the object to be dried by steam heat using steam supplied by the steam header 106,
Condensate tank 112 for receiving the recovered steam used in the dryer 40 as condensate,
A condenser 116 for accommodating condensed water in the condensate tank 11 by the boiler feed pump 115 to receive condensed water and recover the condensed water to the boiler 110;
Filter dust collector 120 is installed to remove dust from the gas exhausted from the above-described coal mill 116,
It is installed to clean the exhaust gas passed through the bag filter 120, the water supply 123 is supplied and the washing water circulation pump 124 is installed, the wet washing tower 121 for circulating the washing water,
Installed in the wet cleaning tower 121, steam production and exhaust gas treatment apparatus using waste, characterized in that it comprises a smoke prevention heat exchanger (111) using the combustion heat of the boiler (110). The method of claim 1,
The boiler 110 includes a combustible gas generated in the sludge storage tank 50, the EPR carbonizer 80, the sludge carbonizer 70, the waste sludge dryer 40, the sewage treatment plant 141. Steam production and exhaust gas treatment system using waste, characterized in that configured to be supplied to the furnace to be used as heat of combustion with odor removal The method of claim 1,
Activated carbon storage tank 122 and the hydrated lime storage tank 125 is installed in the filter dust collector 120, the activated carbon and hydrated lime is supplied by spraying, using a waste, characterized in that configured to remove SOx, HCl and dioxin Steam Production and Exhaust Gas Treatment System The method of claim 1,
The condensate tank 112 has a soft water supply pump 119 is connected to supply the softened water from the water softener 118 to the condensate tank 112, characterized in that steam production and exhaust gas using waste Processing equipment The method of claim 1,
In the above-described bag filter 120 and the wet cleaning tower 121, a steam production and exhaust gas treatment apparatus using waste, characterized in that the exhaust temperature of the combustion gas is 200 degrees Celsius or less to prevent the resynthesis of dioxin. The method of claim 1,
The boiler 110 is connected to a hot air dry heat exchanger 108 is configured to receive the heat of the boiler 110, the hot air dry heat exchanger 108 is connected to the degasser 114 is degassed by hot air Steam production and exhaust gas treatment apparatus using waste, characterized in that configured to help the degassing action of (114) The method of claim 1,
In the wet washing tower 121, the baffles 126, which are bent in a zigzag shape, are formed side by side, and the protrusions 130 are formed on the surfaces of the baffles 126 to increase the contact between the washing water and the gas, thereby increasing the moisture efficiency. In addition, the washing water supply pipe 129 is installed inside the wet washing tower 121 and the washing water nozzle 128 is formed in the supply pipe 129 to produce steam using waste, characterized in that configured to spray the washing water and Exhaust gas treatment system

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