KR100264480B1 - Heating, cooling method and apparatus by superheated steam liquidizing with purifing function - Google Patents

Abstract

PURPOSE: A system and a method for air conditioning are provided to cool and heat air by using condensed latent heat of superheated steam generated by pyrolysis of organic/inorganic pollutants contained in sewage and waste water. CONSTITUTION: A heat control system comprises: waste water and sewage filters(1,2) for physical filtering of collected waste water and sewage; saturated steam generating units(3,4,10) for generating saturated steam by evaporating the filtered waste water and sewage; pyrolysis units(5,6) for pyrolysis of odors and organic/inorganic pollutants contained in the saturated steam by heating at temperatures from 400deg.C to 800deg.C; an energy recycling unit(8) for condensing the purified steam and for using latent heat generated by the condensation as energy for driving an air conditioner; and water purifying units(7,9) collecting the purified water losing heat by the energy recycling unit and for re-supplying the purified water as a potable water. By using the heat control system related with an air conditioning system and a power plant in a waste water treatment site and a sewage final treatment site, industrial water or water service is produced as an additive.

Description

Thermal management system with water purification capacity and method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to wastewater and sewage recycling systems, and more particularly, to a comprehensive water purification and thermal management system that uses waste water or sewage discharged from a factory or a general household to purify water and uses high temperature steam generated in this water purification process as living energy.

In addition, the present invention relates to an energy recycling system for driving a power plant using water vapor generated in the waste water and sewage treatment process.

The treatment of industrial wastewater and domestic sewage discharged from factories and general households is becoming a social problem as the interest in environmental problems increases. Until now, waste and sewage problems have been dealt with in order to purify such waste water or sewage, and research on proper recycling of them has been insufficient.

Therefore, the present inventors have become interested in the problem of evaporating such sewage and wastewater with water vapor and driving the cooling and heating apparatus using this water vapor.

However, conventional heating devices or absorption air conditioners using steam or hot water as heat sources cannot use waste water or sewage due to structural characteristics or functional problems. On the contrary, it is a reality that efficiency and performance are ensured only by using ultra pure water which has been removed even minerals.

Especially . In the case of waste water or sewage, odors that cause odors and oil and inorganic pollutants (BOD, COD) dissolved in water are evaporated together when they evaporate with the waste water, and are included in water vapor. Is liquefied together when it is liquefied and contaminates the water quality of condensate, so it must be removed by using chemicals.In this case, there is a disadvantage of secondary pollution caused by the use of chemicals as well as an uneconomical problem of expensive chemicals. I found the facts.

The present invention has been made in accordance with the technical request as described above, the object of the present invention is to heat the odor component and oil, inorganic contaminants (BOD, COD causative agent) causing the odor contained in sewage and waste water by heat The present invention provides a multipurpose thermal management system that can be used as a heat source for cooling and heating systems by pyrolyzing and using latent heat of condensation steam generated by this heat.

In addition, another object of the present invention is to provide an energy recycling system for driving a power generation facility for producing electricity by using the latent heat of evaporation of waste, sewage.

One aspect of the present invention for achieving the above object is to collect the waste water and sewage discharged from the demand source 21, the collected waste, waste for physically filtering the sewage, sewage filtration unit (1, 2) and ; A saturated steam generating unit (3, 4, 10) for generating saturated steam by evaporating the filtered waste and sewage supplied from the waste and sewage filtration; A pyrolysis unit (5, 6) for thermally decomposing odor components, oil and inorganic contaminants contained in the saturated steam by heating the saturated steam supplied from the saturated steam generator to a high temperature of about 400 ° C to 800 ° C; An energy recycling unit 8 for condensing the purified water vapor in which the odor component and the contaminants have been removed and using the latent heat of condensation generated in the condensation process as energy for driving cooling and heating devices of the demand destination; The energy recycling unit takes away the latent heat of condensation to collect the condensed purified water, and to claim the thermal management system having a water purification capacity including a purified water unit (7, 9) for supplying the collected purified water to the drinking water of the demand destination.

In addition, the thermal management system of the present invention is installed between the thermal decomposition unit (5, 6) and the energy recycling unit 8, the thermal decomposition using waste, sewage supplied from the waste, sewage filtering unit (1, 2) Heat exchange condensation units 3A and 4A for condensing and supplying high temperature water vapor purified by the units 5 and 6 to the water purification units 7 and 9, and evaporated wastes supplied from the heat exchange condensing units 3A and 4A. Further pyrolyzing the sewage to produce purified steam, and further comprising another pyrolysis section (5A, 6 ') for providing the generated steam to the cold, heating system (8).

In addition, the saturated steam generating unit (3, 4, 10) is additionally a waste heat recovery device (WHR) for preheating the waste water and sewage to a constant temperature before evaporating the waste water and sewage supplied from the filtration unit (2) Including; The energy recycling section 8 additionally includes a cogeneration system (PGS) for generating electrical energy using a heat source of high temperature purified steam supplied from the pyrolysis sections 5 and 6.

Another aspect of the present invention is to collect the waste water and sewage discharged from the demand source 21, the collected waste, waste to collect the waste, sewage and filtration of sewage; Saturated steam generation step of generating a saturated steam of about 100 ℃ to about 300 ℃ by evaporating the waste, sewage filtered in the waste, sewage filtration step; A pyrolysis step of thermally decomposing odor components and oil and inorganic contaminants contained in the saturated steam by heating the saturated steam generated in the saturated steam generating step to a high temperature of about 400 ° C. to about 800 ° C .; The energy recycling step of condensing the purified water vapor from which the odor component and contaminants have been removed, and using the latent heat of condensation generated in the measurement process to drive the cooling and heating of the demand destination; The waste water and sewage is purified to collect the purified water condensed by the latent heat of condensation in the energy recycling step, and to re-supply the collected purified water to the drinking water of the demand destination. It is to claim a method of using a heat source as energy.

Other objects and advantages of the invention will be described below and will be appreciated by the practice of the invention. Furthermore, the objects and advantages of the invention can be realized in particular by the means and combinations indicated in the appended claims.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate presently preferred embodiments of the invention and, together with the foregoing general description and the detailed description of the following preferred embodiments, serve to explain the principles of the invention. .

1 is a block diagram of a thermal management system according to an embodiment of the present invention.

2 is a block diagram of a thermal management system according to another embodiment of the present invention.

3 is an enlarged cross-sectional view of the condenser and steam heat exchanger of the present invention.

* Explanation of symbols for main parts of the drawings

1: collection tank 2: waste, sewage filter

3: capacitor 3A: first capacitor

4: evaporation tube 4A: 1st evaporation tube

5: steam heat exchanger 5A: first steam heat exchanger

6: super heater 7: condensate filtration unit

8: cold, heating system 9: clean water tank

10: boiler R _l ~ R ₃ : regulator

V ₁ ~ V ₄ : Valve P ₁ ~ P ₉ : Pipeline

Pa, Pb, Pc: Pump PGS: Cogeneration System

WHR: Waste Heat Recovery Device

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

First, the configuration of a preferred embodiment of the thermal management system according to the present invention will be described with reference to FIG. 1 of the accompanying drawings.

As shown in Figure 1, the thermal management system of the present invention is largely divided into waste, sewage filtration unit (1, 2), saturated steam generation unit (3, 10, 4), the first pyrolysis unit (5, 6), heat exchange Condensation parts 3A and 4A, 2nd pyrolysis parts 6 'and 5A, an energy recycling part 8, and a water purification part 7 and 9 are included.

The waste and sewage filtration unit is composed of a collecting tank 1 for collecting wastewater and sewage discharged from the demand source (factory and general home) 21 and a filtering device 2 for filtering large particles of waste and sewage supplied from the collecting tank. do. This filtration device 2 serves to filter out solid and liquid components contained in waste and sewage.

The saturated steam generator is a waste (3) and evaporation tube (4) and waste, sewage supplied to the condenser (3) for heating the waste, the sewage is supplied through the sewer pipe through the filtration device (2) to evaporate into saturated steam It consists of a boiler 10 for heating. In the conduit between the output end of the boiler 10 and the input end of the condenser 3, a regulator R1 is provided to keep the pressure P1 of the heating steam constant. In addition, a valve V1 for regulating the flow of the waste and sewage is provided at the input terminal of the condenser through which the waste and sewage are received.

Steam heated by the boiler 10, that is, the heating steam input to the condenser 3 for heat exchange with waste and sewage is preferably heated to about 350 ℃. At this time, the temperature of the heated steam can be changed depending on the use of the system or the environment. In addition, the saturated steam supplied through the evaporation tube preferably has a temperature of about 100 ℃ to about 300 ℃.

The first pyrolysis unit heats waste and sewage steam supplied from an evaporation tube to a high temperature (about 400 ° C. to about 800 ° C.) to dissolve odor components, oils, and inorganic pollutants (BOD, COD causative agents) dissolved in the crystal. And a heat exchanger (5) for heat exchange between the superheater (6) for pyrolysing the waste, the wastewater supplied from the evaporation tube (4) and the superheated steam supplied from the superheater (6). In the pipeline between the evaporator 4 and the heat exchanger 5, a regulator R2 is installed to keep the pressure P2 of the saturated steam constant.

The heat exchange condensation unit comprises a first condenser 3A for condensing water vapor from which contaminants have been removed by heat-exchanging the water vapor from which contaminants are supplied from the heat exchanger 5 with waste and sewage supplied from the filtration device 2; It consists of 4 A of evaporation tubes for evaporating the waste and sewage supplied from this 1 A of 3 A of capacitors. At the input terminal to which the waste and sewage of the first capacitor is supplied, a valve V2 for controlling the inflow of waste and sewage is provided.

The second pyrolysis portion has the same configuration as the first pyrolysis portion. That is, the second pyrolysis unit heats the waste and sewage steam supplied from the evaporation tube 4A to a high temperature (about 400 ° C to about 800 ° C) to dissolve odors, oils and inorganic pollutants (BOD, The first heat exchanger 5A for heat exchange between the super heater 6 'for pyrolysing the COD substance) and the superheated steam supplied from the waste and sewage steam supplied from the evaporation tube 4A and the super heater 6'. It is composed of In the conduit between the evaporator 4A and the heat exchanger 5A, a regulator R3 is installed to maintain the pressure P5 of the evaporator.

The energy recycling unit comprises a cold and heating system 8 for using the latent heat of condensation of high temperature steam (about 150 ° C.) supplied from the second pyrolysis unit as a cooling and heating heat source of the demand destination 21.

The purified water unit is a condensate filtration device (7) for collecting and filtering the purified condensate supplied from the condenser (3A) of the heat exchange condensation unit, and the cold, heating system (8), and the condensate filtration device (7) It consists of the clean water tank 9 which collects the purified water (clean water) supplied from and supplies it to the water of the demand destination 21. As shown in FIG.

The condensate filtration device may include a drinking water processor such as a condensate waste heat recovery device and a mineral feeder as necessary.

In addition, pumps Pa and Pb are respectively installed in the conduit 12 between the water collecting tank 1 and the filtration device 2 and between the clean water tank 9 and the demand destination 21.

The capacitor 3, the first capacitor 3A, the heat exchanger 5, and the first heat exchanger 5A are shell and tube type known heat exchangers having the configuration as shown in FIG. The heat exchanger includes a plurality of heat exchange tubes 31, 31A, 51, and 51A each having the same configuration as that in FIG.

Hereinafter, a system operation state of the thermal management system having the above-described configuration will be described in detail.

Waste water or domestic sewage supplied from a demand source 21 such as a factory or a general household is collected in a collection tank 1 through waste and sewage pipes 13. The waste and sewage collected in the sump 1 are pumped by the pump Pa and supplied to the capacitor 3 and the first capacitor 3A, respectively. At this time, the waste is supplied to the capacitor (3) and the first capacitor (3A). Sewage is filtered water in which hypertrophic substances have been filtered through a filtration device (2).

The filtered waste and sewage are filled in the condenser 3 and the first capacitor 3A at a constant level by opening and closing the valves V1 and V2.

When the condenser 3 is filled with waste and sewage with a constant water level, the boiler 10 is operated to generate steam of about 350 ° C., and the generated steam rises to a constant steam pressure P1 set in the regulator R1. After that, the capacitor 3 is supplied to the heat exchange tube 31. The heated steam supplied to the heat exchange tube 31 of the condenser 3 is condensed by exchanging heat with waste and sewage supplied to the input end of the condenser 3, and this condensed water is supplied back to the boiler 10. Waste and sewage which is evaporated by taking heat from the heating steam of the boiler 10 rises from the lower end of the condenser 3 to the upper end and is supplied to the evaporation pipe 4 as shown by the arrow shown in FIG.

The heated steam supplied to the evaporation tube 4 is naturally cooled to about 100 ° C. to about 300 ° C., and then is supplied to the heat exchange tube 51 of the heat exchanger 5 which is elevated to a constant pressure P2 by the regulator R2. do.

Saturated water vapor (about 100 ° C. to about 300 ° C.) supplied to the heat exchange tube 51 of the heat exchanger 5 is exchanged with the ruptured steam (about 400 ° C. to about 800 ° C.) supplied from the super heater 6. It is preheated (about 300 ° C. to about 450 ° C.) and then supplied to the super heater 6.

When the preheat steam is supplied to the super heater 6, the super heater 6 heats the steam at a very high temperature (about 400 ° C to about 800 ° C) to cause odors and oils that cause odors dissolved in the steam. Pyrolyses inorganic contaminants.

The high temperature steam decomposed in this way is supplied to the lower end of the heat exchanger 5 again, and is cooled by heat exchange with saturated steam supplied from the upper end thereof (about 250 ° C.), and the cooled water vapor is exchanged with the first condenser 3A. It is supplied through the tube 31A.

The water vapor supplied through the heat exchange tube is condensed by losing the latent heat by heat exchange with waste and sewage filled with a constant water level in the first condenser 3A. do.

In addition, water vapor supplied through the heat exchange tube 31A and water vapor evaporated through heat exchange are discharged from the upper end of the first capacitor 3A and sent to the evaporation chamber 4A. Saturated water vapor supplied from the evaporation tube 4A is raised to a constant vapor pressure by the regulator R3, and this saturated water vapor is supplied to the heat exchange tube 51A of the first heat exchanger 5A.

Saturated water vapor (about 100 ° C. to about 300 ° C.) supplied to the heat exchange tube 51A of the heat exchanger 5A is subjected to heat exchange with superheated steam (about 400 ° C. to about 800 ° C.) supplied from the super heater 6 '. It is preheated (about 300 ° C. to about 450 ° C.) and then supplied to the super heater 6 ′.

When preheated steam is supplied to the super heater 6 ', the super heater 6' heats the steam at a very high temperature (about 400 to about 800 degrees Celsius) and causes an odor component that causes odor dissolved in the steam. Pyrolyses oil and inorganic contaminants.

The hot steam decomposed in this way is supplied to the lower end of the heat exchanger 5A again and is cooled by heat exchange with saturated steam supplied from the upper end thereof (about 150 ° C.), and the cooled steam is cooled to the cold and heating system 8. Supplied.

The high temperature water vapor (about 150 ° C. to about 200 ° C.) supplied to the cold and heating system 8 is condensed by supplying its heat energy to a heat source for cooling and heating of the demand destination 21, and the condensate is filtered through a condensate filtration device 7 Is supplied.

The purified condensed water supplied from the first condenser 3A and the cold and heating system 8 is once again filtered through the condensate filtration device 7 to be changed to clean water enough for humans to overtake. The clean water is collected in the clean water tank 9 and then supplied to the demand destination 21 via the water pipe 12 by the pump Pb.

The above-described heat management system of FIG. 1 is a multi-stage evaporation method focused on water purification function. If necessary, evaporation is necessary when constructing a multi-stage evaporation system of 5-7 stages starting from high pressure to low pressure evaporation conditions. The amount of heat to be minimized can be minimized.

The thermal management system shown in FIG. 2 is focused on the complex thermal management aspects and has the same configuration and operation as the thermal management system of FIG.

However, the heat management system of FIG. 2 removes the heat exchange condensation part of the system configuration of FIG. 1, and selects only one of the two pyrolysis parts to emphasize energy recycling rather than wastewater and sewage water purification functions.

That is, the heat management system of FIG. 2 includes waste and sewage filtration sections 1 and 2, saturated steam generation sections 3, 4, WHR and 10, pyrolysis section 6, energy recycling section PGS, and water purification section. It consists only of (7, 9).

In addition, the structure of the said waste and sewage filtration part 1 and 2 and the water purification part 7 and 9 is the same as that of the heat management system of FIG. However, in the thermal management system of FIG. 2, unlike the thermal management system of FIG. 1, a separate waste heat recovery device (WHR) is additionally included in the saturated steam generators 3, 4, WHR, and 10. ) Is composed of only the super heater (6), and the cogeneration system (PGS) is additionally included in the energy recycling unit (8, PGS).

The waste heat recovery device (WHR) is for preheating the waste and sewage supplied through the filtration device 2 before supplying it to the capacitor 3. Therefore, it is advantageous in terms of energy consumption because the temperature of the steam supplied through the boiler 10 does not have to be high.

In addition, if the pyrolysis unit 6 is composed only of the super heater 6, the water purification function is relatively inferior, but there is an advantage of directly driving the cogeneration system (PGS) by pyrolysis of high temperature steam.

The cogeneration system (PGS) is a device for generating electricity using high temperature steam.

Hereinafter will be described in detail the operating state for the thermal management system shown in FIG.

Waste water or sewage is put into the heat exchange tube 31 in the condenser 3, heat exchanged with the saturated steam passing through the outside of the heat exchange tube 31, and the evaporated high pressure saturated steam passes through the super heater 6 By overheating and vaporizing at high temperature, the evaporation gas impurities (BOD, COD-causing substances) in water vapor are removed and purified in the same manner as described in FIG. 1, and the purified superheat steam is sent to a cogeneration system (PGS) to generate electricity. After returning to the heating or cooling system (8) to recover the energy input in the process of evaporation → superheating, the condensed condensate is sent to the filtration device (7) to be filtered for industrial water or tap water for recycling. Waste water or sewage collected in the sump (1) by pump (Pa) and pumped to the waste sewage filtration device (7), filtered and then waste heat recovery through the waste, sewage pipe (14) The device WHR is filled to reach a certain level of the capacitor 3 and the evaporation tube 4.

Then, the saturated steam produced by operating the boiler 10 is supplied to the condenser 3 through the saturated steam conduit P1 and passed downward outside the heat exchange tube 31 in the condenser 3 to condense the condenser 3. The heat exchange tube 31 is heat exchanged with the waste water or sewage filled in the heat exchange tube 31 to condense the latent heat of vaporization by condensation. Heat exchange with wastewater or sewage passing through the heat exchange tube 61 to recover the condensate waste heat, and then refills the boiler with a pump (Pc) through the boiler water tank (10A), the condensate waste heat recovery device ( The waste water or sewage that is recovered to condensate waste heat during the WHR) is preheated to some extent and supplied to the condenser (3) .The heat is exchanged with the saturated steam of constant pressure supplied from the boiler through the saturated steam pipe (P1), and heated and evaporated. After reaching the preset pressure, the valve (V3) is opened to open the valve (V3) through the saturated steam pipe (P2) and the superheater (6) is heated to a high temperature of a constant temperature to change the superheated steam to waste water or sewage Melted and evaporated to remove and remove odorous components, oil and inorganic evaporative gas impurities contained in water vapor by pyrolysis, and then send to cogeneration system (GPS) via superheated steam pipe (P3) to produce electricity Heat exchange and condensation in (8) to perform the cooling and heating function, and then sent to the condensate filtration device (7), filtered to suit the industrial or drinking water and stored in the clean water tank (9) and then pumped by industrial pump or It is a multipurpose thermal management system of superheated steam liquefaction that allows reuse as a constant.

Additional advantages and modifications will be readily apparent to those skilled in the art. Thus, in a broad aspect, the invention is not limited to the specific details and representative apparatus shown and described herein.

Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

The present invention is not limited to the above-described embodiments, and various modifications and variations are made by those skilled in the art to which the present invention pertains without departing from the spirit and scope of the appended claims. Of course it is possible.

As described above, according to the present invention, in the case of a large-scale wastewater treatment plant or a sewage treatment plant, the present invention is used in conjunction with a regional cooling, heating, and cogeneration power generation system to produce industrial water or tap water by the amount of heat required for regional cooling, heating, and cogeneration. It is effective to produce high temperature, and in case of cooling, heating system or integrated thermal management system of superheated steam liquefaction method, waste water or sewage is recycled by industrial water or water and recycled to reduce demand of industrial water or water by more than 90%. In addition, it is expected to achieve the drastic improvement of the water environment by realizing no discharge of wastewater or sewage, as well as the effect of one-three-three trillion, which reduces water resource development budget and water environment related budget (more than 5 trillion won per year) that the government or local government must bear. Can be.

Claims (4)

A wastewater and sewage filtration unit 1, 2 for collecting wastewater and sewage discharged from the demand destination 21, and physically filtering the collected wastewater and sewage; A saturated steam generating unit (3, 4, 10) for generating saturated steam by evaporating the filtered waste and sewage supplied from the waste and sewage filtering unit; A pyrolysis unit (5, 6) for thermally decomposing odor components and oil and inorganic contaminants contained in the saturated steam by heating the saturated steam supplied from the saturated steam generator to a high temperature of about 400 ° C to about 800 ° C; An energy recycling unit 8 for condensing the purified water vapor in which the odor component and the contaminants have been removed and using the latent heat of condensation generated in the condensation process as energy for driving cooling and heating devices of the demand destination; And a purified water unit (7, 9) for removing the latent heat of condensation from the energy recycling unit to collect the condensed purified water and resupply the collected purified water to the drinking water of the demand destination. According to claim 1, wherein the pyrolysis unit (5, 6) and the energy recycling unit (8) is installed between the waste, sewage and wastewater supplied from the waste, sewage filtering unit (1, 2) using the pyrolysis unit ( Heat exchange condensation units 3A and 4A for condensing and supplying the high temperature water vapor purified by 5 and 6 to the water purification units 7 and 9, and evaporated waste and sewage supplied from the heat exchange condensing units 3A and 4A. Is pyrolyzed to produce purified steam, and further includes another pyrolysis section (5A, 6 ') for providing the generated steam to the cooling and heating system (8). Thermal management system with water purification capacity. The waste heat recovery apparatus (WHR) according to claim 1, wherein the saturated steam generator (3, 4, 10) is configured to preheat the wastewater and sewage to a constant temperature before evaporating the wastewater and sewage supplied from the filtration unit (2). Additionally comprises; The energy recycling unit 8 additionally includes a cogeneration system (PGS) for generating electrical energy using heat sources of purified high temperature steam supplied from the pyrolysis units (5, 6). Thermal management system with water purification capacity. A wastewater discharged from the demand destination 21, a wastewater for collecting sewage, and a wastewater for physically filtering the collected wastewater and sewage; Saturated steam generation step of generating a saturated steam of about 100 ℃ to about 300 ℃ by evaporation of sewage when filtered in the waste, sewage filtration step; A pyrolysis step of thermally decomposing odor components and oil and inorganic contaminants contained in the saturated steam by heating the saturated steam generated in the saturated steam generating step to a high temperature of about 400 ° C. to about 800 ° C .; The energy recycling step of condensing the purified water vapor from which odor components and contaminants have been removed, and using the latent heat of condensation generated in the condensation process to drive the cooling and heating of the customer; The waste water and sewage is purified to collect the purified water condensed by the latent heat of condensation in the energy recycling step, and to re-supply the collected purified water to the drinking water of the demand destination. How to use heat source as energy.

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