US20120308941A1 - Method and device for high-temperature combustion using fuel and aqueous solution of organic compound - Google Patents

Method and device for high-temperature combustion using fuel and aqueous solution of organic compound Download PDF

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US20120308941A1
US20120308941A1 US13/520,690 US201113520690A US2012308941A1 US 20120308941 A1 US20120308941 A1 US 20120308941A1 US 201113520690 A US201113520690 A US 201113520690A US 2012308941 A1 US2012308941 A1 US 2012308941A1
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temperature
organic compound
aqueous solution
burner
combustion chamber
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Saburo Ishiguro
Yukio Ishii
Kazutoshi Mitake
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/085—High-temperature heating means, e.g. plasma, for partly melting the waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/008—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for liquid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/10—Supplementary heating arrangements using auxiliary fuel
    • F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/20—Waste heat recuperation using the heat in association with another installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2207/00—Control
    • F23G2207/10—Arrangement of sensing devices
    • F23G2207/101—Arrangement of sensing devices for temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/50006—Combustion chamber walls reflecting radiant energy within the chamber

Definitions

  • the present invention relates to a method and a device for combustion of an aqueous solution of an organic compound.
  • it relates to a method and a device for high-temperature combustion in which an aqueous solution of an organic compound like an aqueous alcohol solution and fuel are used.
  • examples of the organic compound for an aqueous solution of an organic compound include alcohols, organic acids, and aldehyde ketones.
  • examples of the organic aqueous solution include organic waste water, which is an industrial waste.
  • a common practice includes that an organic aqueous solution is slowly added thereto for combustion while heavy oil or the like is burned with a burner. According to this method, the organic compounds contained in an organic waste water are oxidized while water contained in the organic waste water is vaporized by burning heavy oil, and as it has almost no contribution in terms of energy, it is just practiced as a simple way of processing waste water.
  • the fuels used for an incinerator or an internal combustion engine is mostly a water-in-oil (W/O) type emulsion.
  • W/O water-in-oil
  • oils in water-in-oil (W/O) type are exposed to surface, and therefore there is a merit that it is easily combustible.
  • oils are included as microparticles in water, and therefore there is a problem that it is much less combustible.
  • the water vapor explosion does not occur when extremely rapid heat transfer is not allowed.
  • the heat transfer occurs about 5 times faster in an O/W type than a W/O type, and therefore it has greater chance to have water vapor explosion.
  • the water vapor explosion may occur when molten iron is dropped into a water bath or underground water is in contact with magma (see, Science of Vapor Explosion (written by TAKASHIMA Takeo and IIDA Yoshihiro, SHOKABO Publishing Co., Ltd. published on Jan. 25, 1998, pages 28 to 57).
  • an object of the invention is to accomplish improvement of combustion efficiency by having a condition at which water vapor explosion (i.e., microexplosion of sprayed particles or the like) is guaranteed to occur, decomposing organic compounds contained in water by utilizing the energy of microexplosion of water vapor, and promoting an aqueous gas reaction with water molecules and an oxidation reaction with air.
  • water vapor explosion i.e., microexplosion of sprayed particles or the like
  • droplets of sprayed organic aqueous solution are sprayed into a high temperature environment to cause microexplosion of water vapor, and according to decomposition of an organic compound contained in the organic aqueous solution, an aqueous gas reaction and an oxidation reaction occur to reduce an endothermic reaction of an aqueous gas reaction (i.e., an endothermic reaction is reduced when chemical bonds are broken or the like), and consequently combustion efficiency increases.
  • a high-temperature combustion method using fuels and an aqueous solution of an organic compound including: in a combustion chamber, (1) spraying and burning a fuel with a first burner to heat the interior temperature of a combustion chamber to a high temperature of 700° C. or above; and (2) spraying subsequently an aqueous solution of an organic compound with a second burner into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature.
  • a high-temperature combustion method using fuels and an aqueous solution of an organic compound including: (1) spraying and burning in a combustion chamber a fuel with a first burner to heat the interior temperature of the combustion chamber to a high temperature of 700° C.
  • a device for high-temperature combustion using fuels and an aqueous solution of an organic compound including (1) a combustion chamber, (2) a first burner attached thereto to spray and burn a fuel in the inside of the combustion chamber so that the interior temperature of the combustion chamber is heated to a high temperature of 700° C. or above, and (3) a second burner which is attached close to the first burner and used for spraying an aqueous solution of an organic compound into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature.
  • a device for high-temperature combustion using fuels and an aqueous solution of an organic compound including (1) a combustion chamber, (2) a first burner attached thereto to spray and burn a fuel in the inside of the combustion chamber so that the interior temperature of the combustion chamber is heated to a high temperature of 700° C. or above, (3) a second burner which is attached close to the first burner and used for spraying an aqueous solution of an organic compound into high-temperature combustion gas obtained with the first burner followed by mixing and burning for further elevating the interior temperature to higher temperature, and (4) a chamber for heat treatment which is installed to be connected to the combustion chamber.
  • the fuel sprayed with the first burner is any one or more types that are selected from petroleum oils like kerosene oil and light oil, organic solvents like alcohols, city gas, LPG, natural gas, hydrogen gas, and brown gas.
  • a fuel is sprayed and burned with a first burner to elevate the interior temperature of the combustion chamber to a high temperature of 700° C. or above, and an aqueous solution of an organic compound is subsequently sprayed with a second burner into the high-temperature combustion gas obtained with the first burner, consequently causing mixing and burning.
  • interior temperature of the combustion chamber and/or temperature of a chamber for heat treatment can be synergistically increased to high temperature. As such, the fuels and organic compounds are fully burned, and thus the fuel cost can be reduced.
  • FIG. 1 is a frontal view for describing the device of Example 1 of the invention
  • FIG. 2A is a cross-sectional view for illustrating the combustion chamber in the device of Example 1 and FIGS. 2B and 2C are plane views for illustrating a heat resistant reflector which is placed in the combustion chamber;
  • FIG. 3 is a graph for illustrating the temperature change in the device of Example 1;
  • FIG. 4 is a graph for illustrating the temperature change in the device of Example 2.
  • FIG. 5 is a graph for illustrating the heat calorie generated in the device of Example 2.
  • FIG. 6 is a graph for illustrating the temperature change in the device of Example 3.
  • FIG. 7 is a graph for illustrating the heat calorie generated in the device of Example 3.
  • FIG. 8 is a graph for illustrating the temperature change in the device of Example 4.
  • FIG. 9 is a graph for illustrating the temperature change in the device of Example 5.
  • FIG. 10 is a graph for illustrating the temperature change in the device of Example 6.
  • FIG. 11 is a graph for illustrating the temperature change in the device of Example 7.
  • FIG. 12 is a graph for illustrating the temperature change in the device of Example 8.
  • FIG. 13 is a graph for illustrating the temperature change in the device of Example 9.
  • FIG. 1 is a frontal view for describing the high-temperature combustion device of the example of the invention.
  • reference numeral 1 indicates a combustion chamber
  • reference numeral 2 indicates a first burner
  • reference numeral 3 indicates a second burner
  • reference numeral 101 indicates a wall of a combustion chamber
  • reference numeral 201 indicates a chamber for heat treatment
  • reference numeral 301 indicates a pathway
  • reference numerals T 1 to T 3 indicate a thermometer.
  • FIG. 2A is a cross-sectional view for illustrating the combustion chamber 1 of FIG. 1 .
  • a ceramic heat resistant reflectors 4 and 5 FIGS. 2B and 2C ) having several holes 4 ′ and notch parts 5 ′ are vertically installed within the combustion chamber 1 .
  • FIGS. 2B and 2C are plane views of the heat resistant reflectors 4 and 5 .
  • fuel oils like heavy oil A, light oil, and kerosene oil are typically sprayed from the first burner (fuel burner) 2 into the combustion chamber 1 and burned therein.
  • fuel burner fuel burner
  • an amount suitable for complete combustion is supplied with the same fuels and the air ratio is generally in the range of from about 1.3 to 1.7.
  • the heat resistant reflectors for example, silicon carbide based ceramic plate of which surface is coated with alumina
  • the heat resistant reflectors 4 and 5 which are disposed and installed inside the combustion chamber 1 , are heated to a high temperature of 700° C. or above.
  • the heat resistant reflector 4 or 5 one type or a combination of two or more types may be used.
  • an organic aqueous solution (water containing an organic compound) is sprayed from the second burner (burner for spraying an aqueous solution of an organic compound) 3 so that it can be mixed with fire flame of the first burner within the combustion chamber 1 and collided with the heat resistant reflectors 4 and 5 which are heated to high temperature, and as a result, the organic compounds are decomposed and oxidized accompanied with water vapor explosion on the surfaces of the heat resistant reflectors 4 and 5 .
  • thermometer T 1 the interior temperature of the combustion chamber 1 is constantly monitored.
  • the high-temperature gas within a pathway 301 and a chamber for heat treatment 201 is also a high-temperature and superheated steam containing water vapor.
  • thermometer T 1 As for the combustion method, heavy oil A or the like is first sprayed from the first burner 2 and burned to heat the heat resistant reflectors 4 and 5 .
  • the temperature of the thermometer T 1 reaches 700° C. or above for having an aqueous gas reaction, or possibly 1000° C. or above, the organic aqueous solution starts to be sprayed.
  • Spraying of the organic aqueous solution is preferably started with an amount which is the same as the fuels. However, if the temperature is as high as 1000° C., it can be also sprayed in an amount of 2 to 5 times.
  • the sprayed organic aqueous solution (water containing an organic compound) is collided with the heat resistant reflectors 4 and 5 , and after sprayed water instead of vapor film on the surface receives the heat directly from the heat resistant reflectors 4 and 5 heated to a high temperature, water vapor microexplosion occurs.
  • a W/O type emulsion is used instead of an organic aqueous solution, heat transfer becomes slow, and as a result, possibility of having water vapor microexplosion is extremely low.
  • Water containing methanol or ethanol in an organic aqueous solution forms an azeotropic mixture with methanol or ethanol to lower the boiling point.
  • the water vapor microexplosion can occur more easily.
  • methanol and ethanol are soluble in water and also alcohols are inside of water cluster to get dissolved therein, in accordance with water vapor microexplosion, alcohols undergo partial decomposition or have weak bonding, and having the aqueous gas reaction and oxidation reaction at the same time, combustion with high efficiency can be achieved.
  • a device having a combustion chamber 1 to which a chamber for heat treatment 201 is connected is used as illustrated in the frontal view of FIG. 1 .
  • combustion chamber 1 and the chamber for heat treatment 201 are connected to each other via a pathway 301 with reduced diameter, which connects an exit of the combustion chamber 1 and an entrance of the chamber for heat treatment 201 .
  • a first burner 2 for elevating the interior temperature to a high temperature of 700° C. or above and a second burner 3 for spraying an aqueous solution of an organic compound are installed.
  • thermometers are placed at three spots in the device, that is, a first thermometer T 1 is placed in the combustion chamber 1 , a second thermometer T 2 is placed in the pathway 301 , and a third thermometer T 3 is placed in the chamber for heat treatment 201 .
  • the chamber for heat treatment 201 is a place for utilizing heat under various purposes and power generation, running a boiler, metal refining, quenching, and incinerating food waste or the like are performed therein.
  • a burner is directly attached to a chamber for heat treatment.
  • a combustion chamber is prepared separately and fuels are burned in a small combustion chamber. After heating to the temperature of 700° C. or above, preferably 1000° C. or above, an aqueous solution of an organic compound like an aqueous alcohol solution is sprayed to cause water vapor microexplosion, and as result high-temperature gas is produced and transported to the chamber for heat treatment 201 to be utilized for power generation or the like.
  • heavy oil A was sprayed at 5.9 L/H from the first burner 2 (air ratio: 1.5) to pre-heat the combustion chamber 1 .
  • thermometer T 2 After 20 minutes, the thermometer T 2 showed 1010° C., indicating temperature increase of 210° C.
  • thermometer T 3 temperature of the chamber for heat treatment 201 (the thermometer T 3 ) increased by 170° C. from 610° C. to 780° C.
  • thermometer T 2 showed 980° C., indicating an increase of 180° C. and the thermometer T 3 showed 750° C., indicating an increase of 140° C.
  • FIG. 3 a graph illustrating the temperature change inside the device.
  • the high-temperature gas within the pathway 301 and the chamber for heat treatment 201 is high-temperature and superheated steam containing a large amount of water vapor.
  • heavy oil A was sprayed at 6.6 L/H (5.7 kg/H) from a first burner 2 to heat a combustion chamber 1 . After heating for about one hour, temperature of a chamber for heat treatment 201 was 630° C. as measured by T 3 .
  • temperature of the chamber for heat treatment 201 showed an increase of only 130° C., i.e., from 630° C. to 760° C.
  • the chamber for heat treatment 201 Since the chamber for heat treatment 201 is used as a heating device for actual industrial use, the temperature increase in the chamber for heat treatment 201 is most critical in terms of thermal efficiency.
  • Specific heat of gases is as follows: CO 2 0.54 kcal/m 3 , H 2 O (water vapor) 0.46 kcal/m 3 , O 2 0.35 kcal/m 3 , N 2 0.35 kcal/m 3 .
  • Gas analysis after burning heavy oil is as follows: CO 2 8.4%, H 2 O 8.8%, O 2 6.4%, N 2 76.4% and the specific heat of gas was 0.376.
  • Gas analysis after burning heavy oil+ethanol is as follows: CO 2 11.6%, H 2 O 13.8%, O 2 0.8%, N 2 73.7% (when ethanol is added, air was not particularly introduced, and therefore 6.4% of residual O 2 was consumed by burning heavy oil, lowering O 2 to 0.8%), and specific heat of gas was 0.387.
  • the heat calorie of the heavy oil+30% by volume aqueous ethanol solution was increased by 23% compared to the heat calorie of heavy oil+pure ethanol in the same amount.
  • the high-temperature gas (about 900 to 1100° C.) obtained in this example contains a large amount (23.8%) of H 2 O (water), and it is also high-temperature and superheated steam.
  • Example 2 The test was carried out in the same manner as Example 2 for 30% by volume aqueous methanol solution and pure methanol in the same amount.
  • thermometer T 2 in the pathway connecting the exit of a combustion chamber reached 800° C. and exhibited an almost stable state.
  • 30% by volume aqueous methanol solution was sprayed at 15.2 L/H (pure methanol 4.6 L/H and water 10.6 L/H) from a second burner 3 .
  • the thermometer T 2 in the pathway connecting the exit of a combustion chamber showed 940° C., indicating a temperature increase of 140° C.
  • a thermometer T 3 in a chamber for heat treatment showed a temperature increase of 130° C., i.e., from 630° C. to 760° C.
  • thermometer T 2 in the pathway connecting the exit of a combustion chamber showed a temperature increase of 140° C., i.e., from 800° C. to 940° C., which is the same increase as the 30% by volume aqueous methanol solution.
  • thermometer T 3 in the chamber for heat treatment increased from 630° C. to 720° C. only.
  • the utilization of heat in a boiler for power generation or an incinerator is determined by the temperature and flow amount (heat flow amount) of a chamber for heat treatment, it is found by calculation that the heat calorie in a chamber for heat treatment is increased by about 19% in the case in which 30% by volume aqueous methanol solution is added compared to the case in which pure methanol is added in the same amount.
  • FIG. 7 illustrates such results.
  • the high-temperature gas within the pathway 301 and the chamber for heat treatment 201 was high-temperature and superheated steam containing a large amount of high-temperature water vapor.
  • thermometer T 1 measures the temperature at the center of the combustion chamber
  • thermometer T 2 measures the temperature at the exit of the combustion chamber
  • thermometer T 3 measures the temperature around the exit of the chamber for heat treatment. Since the chamber for heat treatment is a place for multipurpose use, it is expected to be used for power generation, or as a boiler or an incinerator or the like. Thus, the thermal efficiency will be improved more as the temperature of the thermometer T 3 increases.
  • thermometer T 2 showed a temperature increase of 120° C., i.e., from 960° C. to 1080° C. and the thermometer T 3 showed a temperature increase of 100° C., i.e., from 800° C. to 900° C.
  • the results are as illustrated in FIG. 8 .
  • Example 2 the same device ( FIG. 1 ) as Example 1 was used.
  • Heavy oil A was used at 6.6 L/H and the pre-heating time was 30 minutes.
  • 30% by volume aqueous methanol solution was sprayed at 25 L/H.
  • thermometer T 2 showed a temperature increase of 135° C., i.e., from 965° C. to 1100° C. and the thermometer T 3 showed a temperature increase of 130° C., i.e., from 810° C. to 940° C. Since the spray amount of 30% by volume aqueous methanol solution was different between Example 4 and Example 5, i.e., 21 L/H and 25 L/H, respectively, the temperature increase measured by the thermometer T 3 was also different, i.e., Example 4: 900° C. (+100° C.) and Example 5: 940° C. (+130° C.). The results are as illustrated in FIG. 9 .
  • heavy oil A was sprayed at 6.6 L/H from a first burner 2 to heat the inside of a combustion chamber 1 to 700° C. or above, and then 30% by volume aqueous ethanol solution was sprayed at 15.2 L/H from a second burner 3 (ethanol 4.6 L+water 106 L).
  • thermometer T 2 showed a rapid temperature increase of 220° C., i.e., from 780° C. to 1000° C. and the thermometer T 3 showed a temperature increase of 190° C., i.e., from 630° C. to 820° C. Eight minutes later, heavy oil A was reduced by 23%, i.e., from 6.6 to 5.1 L/H, and as a result, the thermometer T 2 was recovered to the level before the addition of ethanol. Meanwhile, although the thermometer T 3 also showed a decrease of 70° C., indicating the temperature of 730° C., but it is still 110° C. higher than the level before the addition of ethanol. The results are as illustrated in FIG. 10 .
  • Example 6 The test was carried out under the same condition as Example 6 to determine the reproducibility. First, to heat a combustion chamber to 700° C. or above, heavy oil A was sprayed at 6.6 L/H from a first burner 1 to increase the temperature of the combustion chamber.
  • thermometer T 2 and the thermometer T 3 showed 800° C. and 640° C., respectively. At that time, 30% by volume aqueous ethanol solution was sprayed at 15.2 L/H.
  • thermometer T 2 showed 980° C., representing a temperature increase of 180° C. and the thermometer T 3 showed 800° C., representing a temperature increase of 160° C.
  • thermometer T 2 at the exit of the combustion chamber showed a temperature decrease of 160° C., i.e., from 980° C. to 820° C. and the thermometer T 3 at the exit of the chamber for heat treatment showed a temperature decrease of only 70° C., i.e., from 800° C. to 730° C. (however, there is still a difference of 90° C. compared to the temperature of 640° C. obtained originally from heavy oil A only).
  • the results are as illustrated in FIG. 11 .
  • the amount of heavy oil A may be further reduced by 22%, thus it is believed that overall 44% reduction can be achieved.
  • Example 8 it was added in an amount of 10.6 L/H in Example 8, compared to 21 L/H and 25 L/H in Example 4 and Example 5, respectively.
  • thermometer T 2 showed a temperature increase of 135° C., i.e., from 800° C. to 935° C. and the thermometer T 3 showed a temperature increase of only 125° C., i.e., from 625° C. to 745° C. in this example.
  • the amount of heavy oil A may be further reduced by 17%, thus it is believed that overall 34% reduction can be achieved.
  • test was carried out by adding methanol-based waste water (i.e., waste water containing 40% by volume of methanol and slight amount of others like amine and formalin).
  • methanol-based waste water i.e., waste water containing 40% by volume of methanol and slight amount of others like amine and formalin.
  • heavy oil A was sprayed at 5.7 L/H from a first burner 2 into a combustion chamber 1 and burned therein followed by heating for about 70 minutes.
  • thermometer T 1 of the combustion chamber shows 1050° C.
  • thermometer T 2 at the exit of the combustion chamber shows 750° C.
  • the methanol-based waste water was added and burned at 11.4 L/H with a second burner 3 .
  • the temperature was increased by about 200° C.
  • the thermometer T 2 showed an increase of 230° C., i.e., from 750° C. to 980° C. The results are as illustrated in FIG. 13 .
  • the temperature of a chamber for heat treatment which can be used as a thermal engine, showed an increase of 160° C., i.e., from 600° C. to 760° C.
  • the methanol-based organic waste water can be used for the invention.
  • waste water containing methanol in an amount of 40% by volume or so is handed over to a waste water management company with charge since the waste water is not burned as it is.
  • a waste water management company with charge since the waste water is not burned as it is.
  • it may be fully utilized as a fuel and also a cost required for handing over to a waste management company can be saved.
  • the high-temperature gas within the pathway 301 and the chamber for heat treatment 201 was also high-temperature and superheated steam containing a large amount of water vapor.
US13/520,690 2010-01-07 2011-01-07 Method and device for high-temperature combustion using fuel and aqueous solution of organic compound Abandoned US20120308941A1 (en)

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