TW508275B - Method for burning wastes almost without generating dioxin, inhibitor of generating dioxin, and Method of producing the inhibitor - Google Patents

Abstract

The invention provides a technology to largely decrease generation of dioxin in combustion ashes as well as exhaust gas by use of an ordinary combustion apparatus. The invention spreads over wastes being burnt an inhibitor for inhibiting generation of dioxin that comprises as main contents an adsorbing substance superior in rate of adsorbing hydrogen chloride gas and a reaction substance superior in reactivity with hydrogen chloride gas, and additionally a degradation agent when required, those mixed, granulated and dried, whereby a powder material removes hydrogen chloride gas in combustion gas and flying ashes and a granular material removes hydrogen chloride gas in residual ashes, thereby inhibiting generation of dioxin.

Description

DESCRIPTION OF THE INVENTION (1) Background of the Invention Field of the Invention The present invention relates to a waste incineration method that hardly produces dioxin, an inhibitor that inhibits dioxin production, and a method for manufacturing the inhibitor. In order to reduce the dioxin produced during the incineration of waste, various inhibitors that inhibit the production of dioxin, such as catalysts containing titanium oxide, as well as inhibitors for removing the dioxin precursor or hydrogen chloride, have been developed so far. Technology for incineration of waste. In addition, a gasification and dissolution technology has been developed, which utilizes the fact that dioxin dissolves when incinerated at a very high temperature of 1000 to 1,500 ° C, and the exhaust gas from the high-temperature combustion gas of incineration waste in the combustion tank or zone is in the range of 1 000 to Re-burn at a temperature of 1 500 ° C. The goal of conventional dioxin removal technology is to remove or reduce dioxin contained in exhaust gas from high-temperature combustion gases. The above-mentioned conventional inhibitors inhibit the production of dioxin, and the dissolution-incineration (gasification / dissolution) technology has the effect of removing or reducing dioxin in exhaust gas. In this regard, many attempts have been proposed so far: Dechlorination by adding potassium carbonate to a low-oxygen atmosphere between the boiler and the dust collector (Japanese unexamined patent application Hei 1 1-9959 (1 999)); future The exhaust gas of the combustion gas of the self-incinerator is cooled to 220 to 230 ° C and sprayed with calcium hydroxide and activated carbon, so that calcium hydroxide neutralizes acid gases and activated carbon to absorb dioxin and mercury (Japanese unexamined patent application He 1 7 -20443 2 (1 995)); use Dioxin pre-adsorption / removal material for exhaust gas before the treatment process is lower than 400 ° C (using difficult to manufacture at more than 400 ° C and easy to manufacture at 200 to 400 ° C Facts of dioxin) (Japanese unexamined 508275 V. Description of invention (2) Patent application He 1 9-220438 (1 997)); Adsorption of dioxin and removal from exhaust gas (Japanese unexamined patent application Hei 1 0-1 28062 ( 1 998)); blowing dioxin adsorbents such as acid clay on the flue of the incinerator (Japanese Unexamined Patent Application He! 1 1-9963 (1 999)); dissolving the Dioxin and other technologies or methods (Japanese Unexamined Patent Application Hei 2 - 3591 4 (1 990); Hei 3- 841 5 (1 99 1);

Hei 4-265122 (1992), etc.). However, the conventional dioxin, which uses titanium oxide as a main material, produces inhibitors that are expensive to manufacture and require frequent application, and therefore cost high as a whole. In addition, the dissolution-incineration technology-based device (gasification / dissolution oven) is about 10 times more expensive than ordinary incinerators, and difficult to shrink, making it impossible to spread widely. The gasification / dissolving oven inevitably requires the continuous disposal of a large amount of waste, which has the problem of extensively connecting and transporting waste from various places, and this point needs to be understood by residents close to the transportation route. In addition, these methods do not substantially remove dioxin from the ash (residual ash) from incineration waste. Ash from incineration waste should only be disposed of by mixing solidified setting agents (eg, cement) and buried underground. Recently, dioxin has been almost completely removed from the exhaust gas from the high-temperature combustion gas without the cost being a problem. However, large amounts of waste are disposed of and incinerated worldwide. It is a very serious and important issue to prevent the generation of dioxin at low cost and infinitely prevent the atmospheric emission from waste incineration. Except for the above method of burying solidified ash in the ground, there is no solution to remove dioxin from the ash from incineration waste at all. It is not exaggerated. The inventors have meticulously researched to solve these shortcomings, and have succeeded in developing -4-508275 V. Description of the Invention (3) The development of dioxin incineration at a relatively low cost is prevented, and almost completely A unique method for removing dioxin from the ashes from incineration waste, and a dioxin production inhibitor for this unique waste incineration method. SUMMARY OF THE INVENTION The present invention relates to a method of incineration waste having relatively little dioxin generation, a dioxin generation inhibitor most suitable for implementing the waste incineration method, and a method for manufacturing such an inhibitor. The present invention also relates to a method for manufacturing RDF, which has a relatively small amount of hydrogen chloride gas and dioxin produced. The dioxin production inhibitor according to the present invention includes a granular or powdery material or a mixture thereof, which includes an adsorbed substance having an excellent rate of adsorbing hydrogen chloride gas as a main content, and a reaction substance having an excellent reactivity with hydrogen chloride gas. The inhibitor is dispersed in the incinerated waste to remove the combustion gas, the hydrogen chloride gas in the fly ash and the residual ash, thereby inhibiting the production of dioxin. Figure 1 is a side view showing a small incinerator for a small plant. Fig. 2 is a plan view showing a scattering device combined in the small incinerator of Fig. 1; Fig. 3 is a sectional view showing a main part of a large-scale incinerator in which a scattering device is installed. Fig. 4 is a schematic diagram showing the structure of a dioxin production inhibitor according to the present invention. Detailed description of the invention The present invention quickly and surely removes halogens generated during the incineration of waste 508275 5. Description of the invention (4) Compounds (hereinafter referred to as π hydrogen chloride gas " and sources of dioxin generation), such as hydrogen chloride gas and chlorination Bromine gas to prevent dioxin production. Dioxin includes benzene ring, chlorine (bromine), and oxygen, and is produced by chemical reaction between chlorides and organic substances in waste in the presence of heavy metals and heat at 200 to 600 ° C. It is known that hydrogen chloride gas reacts with calcium oxide (fast lime) or calcium hydroxide (hydrated lime) to become calcium chloride. Therefore, most of the conventional dioxin production inhibitors are made of quicklime and slaked lime, and it takes a long reaction time and cannot sufficiently capture continuously occurring hydrogen chloride gas. The inventors believe that in this case, quick limes or a combination of slaked lime and an adsorbent quickly and surely capture and capture the hydrogen chloride gas continuously generated during the incineration of the gas, and completed the present invention. Therefore, the inventors have developed various adsorption substances having excellent adsorption rate of hydrogen chloride gas, as well as the shape and application method of dioxin production inhibitor applied to incinerated waste. The present invention is described in detail below. As described above, the dioxin production inhibitor according to the present invention does include, as main contents, an adsorbing substance that rapidly and surely captures and captures hydrogen chloride gas and a reactive substance that retains chlorine with the hydrogen chloride gas. The reaction substance may be calcium oxide (fast lime) or calcium hydroxide (slaked lime), or a mixture thereof. Granulated lime is used for most of the reactive substances in the dioxin production inhibitors according to the present invention that form granules. The adsorption substance is preferably a material having an excellent adsorption rate. Table 1 shows the adsorption rates of various substances. The measurement operation was to place each sample of 0.5 g in a polypropylene container each having a capacity of 3000 ml and a stopper, and then apply 2 ml of 99.99 9% hydrogen chloride gas to each container and cap the stopper and stand still. Way. The concentration of hydrogen chloride gas in the container immediately after the closure of the bottle should be 508275. 5. Description of the invention (5) 10 minutes after using hydrogen chloride gas and 20 minutes after this application, measured using Kitgawa indicator tube (by: Himec Co., Ltd., Chugoku District Office). The initial concentration below 0.1 in Table 1 indicates the fact that 30 ppm of hydrogen chloride gas was totally adsorbed in this example. Table 1 Sample Argon Chloride Gas Concentration (ppm) After the first 10 minutes and after 20 minutes, blank 30 30 30 coffee powder 10 4 below 0.1 activated coffee powder below 0.1 lower than 0.1 lower than 0.1 Fly ash 3 0.3 less than 0.1 Activated fly ash less than 0.1 1 less than 0.1 1 less than 0.1 1 used tea leaves less than 0.1 less than 0.1 less than 0.1 activated carbon 5 2 lower than 0.1 WWm 17 8 lower than 0.1 dolomite 12 12 lower than 0.1 synthetic zeolite 1 4 0.4 lower than 0.1 1 synthetic zeolite 1 lower than 0.1 lower than 0.1 lower than 0 1 The reason why the present invention considers that the adsorption rate of the adsorption substance is important is as follows. In detail, depending on the size of the incinerator, it takes about 5 to 10 seconds or slightly different for the gasification of the combustion gas to be emitted to the atmosphere through the smokestack. During this process, the gas reacts with organic substances to make dioxin. Therefore, in the case where it takes 1 minute to adsorb the hydrogen chloride gas, dioxin is generated at this time, and the residual hydrogen chloride gas is discharged to the atmosphere. Secondly, explain in Table 1 that the initial concentration is lower than 0.1. Because the adsorbent is fine and has excellent floatability, the activated coffee powder is provided coffee, and has about 50% water content, and is dried at 100 to 140 ° C and at 100 mesh, more preferably at 200 mesh, and more preferably at Used coffee material crushed under 300 mesh. Also, because coffee powder is more easily pulverized when it has a low water content, it is preferable that -7-508275 Five 'invention description (6) is to dry it to have a water content of 2% or less. Because drying at 100t or less takes a long time, and drying at 140 ° C causes the coffee powder to penetrate the surface and its ability to adsorb hydrogen chloride gas, the drying is preferably at 120 to 130 ° C, more preferably about 125t. The adsorption rate of the used coffee powder, which is only dried to 5 to 10% water content, is poorer than that of activated carbon. The used tea leaves are dried and ground in the same way as coffee powder, and the adsorption force is only slightly worse than that of coffee powder, so that used tea leaves need to be applied in a slightly larger amount. In addition, when coffee powder and lime are used (approximately 5 to 10% by weight) or have a water content of 5 to 10%, it can be effectively and easily advantageously honed. Fly ash is a large amount of emissions from thermal power plants, and the pH is 3 to 13, depending on the type of coal used and specific equipment of the thermal power plant, so it has or shows different adsorption rates of hydrogen chloride gas. The fly ash in Table 1 shows a fly ash adsorption force having a pH of 10 (and a CEC (cation exchange force) up to about 120) by mixing various fly ash having different pH 値. Therefore, the fly ash in Table 1 is difficult to practically use. For the present invention, it is preferred to use activated fly ash provided by activating freely selected fly ash. The activation of fly ash involves mixing fly ash and slaked lime, adding water, stirring and letting stand for 2 to 3 hours. The mixing ratio of fly ash and slaked lime can be determined by oneself, but the ratio of fly ash is preferably more than slaked lime, for example, 60 to 80% by weight fly ash and 20 to 40% by weight slaked lime. The precipitate in the mixture is then dried and pulverized under a mesh size of 100 to 200, more preferably at a mesh size of 300, to obtain an excellent adsorbent showing a pH of 12 to 13 and a CEC of 150 to 200 and a relatively high rate of hydrogen chloride gas adsorption. . The synthetic zeolite is detailed next. General synthetic boiling used for synthesizing detergents, etc. 508275 V. Description of the invention (7) Stone (synthetic zeolite 1 of Table 1) has an adsorption rate that is only a little higher than activated carbon, and is therefore not good for the present invention. Another zeolite, synthetic zeolite 2 (supplied by Tosoh Corporation under the trade name " Ze ο 1 um ") shows an adsorption rate equal to the activated coffee powder and activated fly ash. " Zeolum " is excellent in adsorbing hydrogen sulfide, sulfur dioxide, or other gases such as hydrogen chloride gas, but it is problematic due to high cost. Other materials such as coconut husks, pressed soybeans, and dolomite show hydrogen chloride gas concentrations below 0.1 after gas application for 20 minutes, but cannot be used in the present invention that requires rapid adsorption. Any other adsorbent material other than those shown in Table 1 or having the same or equivalent adsorption rate as activated coffee powder and activated fly ash can be completely applied to the present invention, provided that it can be preferably obtained at low cost. Rice husks show a rather high adsorption rate when carbonized, but carbonization is cumbersome and time-consuming. Where effective carbonization methods are available, rice husks can be used in the present invention. In addition, wastes from agricultural products produced in large quantities, such as wheat husks or pressed sugar cane, can be tried as specific treatments to obtain materials showing high adsorption rates and convenience in terms of waste disposal. The dioxin generation inhibitor according to the present invention immediately or quickly adsorbs and maintains the hydrogen chloride gas generated when the waste is incinerated, and then causes the hydrogen chloride gas to react with slaked lime and / or quicklime to be eliminated. In this regard, it is preferable to use any material having an excellent reaction efficiency with respect to hydrogen chloride gas as the calcium compound. The dioxin production inhibitor according to the present invention is provided by mixing 50 to 85% by weight of a calcium compound (hydrated lime, quicklime, etc.) in an amount of 50 to 15% by weight of an adsorbing substance ', and then adding an appropriate amount of water to the mixture and granulating and drying. A better mixing ratio is 65 to 75% by weight of the calcium compound and about 35 508275 5. Description of the invention (8)

Up to 25% by weight of adsorbed substance, this mixing ratio can provide the absorption of substance A and calcium compound B with a smaller particle diameter than the absorption of substance A, which covers most of the outer surface of dioxin production inhibitor C, as shown in the sketch of Figure 4. Here. The actual or actual dioxin production inhibitors include a significant amount of the dioxin production inhibitors C in combination. When the inhibitor C is mixed and contacted with the combustion gas or exhaust gas, the adsorbent A immediately or rapidly adsorbs the hydrogen chloride gas contained in the gas. The adsorbed hydrogen chloride gas then reacts with calcium compound B and removes calcium chloride from the system of combustion gas and exhaust gas, which greatly suppresses the production of dioxin using hydrogen chloride gas as a material.

The method for incinerating waste according to the present invention involves dispersing the above-mentioned dioxin production inhibitor on the incinerated waste, wherein the powder material of the present invention removes combustion gas and hydrogen chloride gas in fly ash, and the granular material removes the incineration waste. Hydrogen chloride gas and hydrogen chloride gas contained in the residual ash. The finer the powder material, the higher its flow force, so that the powder material can have higher contact efficiency with combustion gas and exhaust gas, and get excellent hydrogen chloride gas adsorption efficiency. Therefore, the inhibitor according to the present invention is a mixture of a powder material and a granular material, and the mixing ratio thereof may be about 50 to 50. The powder material can be partially powdered by subjecting the granular material (granulated product) to a granulator, or by causing the granular material to be mechanically or thermally (i.e., approximately 450 ° C) in an incinerator. Burning heat) is irritating and partially powdery 'and is simply or easily provided. Therefore, a degradation agent may be added for an excellent degradation rate '. In the case of providing a powder material by causing the granular material to be partially degraded into a powder in an incinerator, it is necessary to apply an inhibitor including only the granular material, and this application is easy to perform. For the acceptance of granular materials -10-508275 V. Invention description (9) In the case of granulators, or in the case where granular materials of mixed waste effectively adsorb hydrogen chloride gas, the degradation rate is also necessary. The degradation agent is explained next. Granulated and dried products generally tend to be more compact. Therefore, the present invention provides particle shapes that are easily degraded. Degradation efficiency is facilitated when some degradation agents are added. The degrading agent may be an organic substance, particularly a plant honing product, such as pressed soybeans, used tea leaves, coffee powder, or shell honing products. A degradation agent may be added in an amount of about 3 to 10% by weight, preferably about 5% by weight, relative to the total weight of the calcium compound and the adsorbent. Since particle diameters that are too small provide poor degradation efficiency, it is preferred to use a degradation agent having a diameter of less than about 40 to 60 mesh. The combustion gas referred to in the present invention is a high-temperature gas generated when waste is incinerated in a combustion tank or zone. Combustion exhaust gas (hereinafter referred to as " exhaust gas ") is a combustion gas taken out and discharged from a self-combustion combustion tank or zone. Fly ash is a solid content or substance that flies with combustion gases and / or exhaust gases. In addition, residual ash refers to the residue from combustion. The use of fire for waste disposal involves the incineration of waste for disposal or use of combustion as fuel. The invention can be applied to any situation. The present invention can also be applied to extremely large-scale incinerators or combustion furnaces with a daily disposal volume of more than tens to hundreds of tons, to large or medium-sized incinerators or combustion furnaces with a daily disposal volume of about tens to several tons, or small scale Small or very small incinerators or burners used in factories. The invention can be applied to a medium-sized or larger incinerator or combustion furnace only by installing the diffuser in a conventional incinerator or combustion furnace without modifying equipment or newly providing expensive equipment, resulting in substantial cost reduction. The reason for using the diffuser here is that the waste is continuously supplied by the movable floor, etc., so that according to -11-508275 V. Invention Description (1G) The inhibitor of the present invention is continuously supplied in an amount corresponding to the waste supplied per unit time. application. Therefore, the capacity of the spreader must correspond to the specified amount of waste. The disperser is used to disperse the inhibitor precisely to the incinerated waste. Inhibitors of the invention that include only powder materials require a strong feed to the point of combustion. Small incinerators or burners can be made with the diffuser installed outside and the diffuser installed above the inside of the furnace so that the hydrogen chloride gas is substantially completely removed. In addition, small or very small incinerators can burn waste that has been mixed with the inhibitor according to the invention. In the wild or when wildfires are burned, the inhibitor according to the present invention can be spread on waste to greatly reduce or reduce dioxin production. Next, explain n RDFπ (a fuel derived from garbage, which pulverizes waste or garbage to make it hard, that is, dries, compresses it into a rod-like shape). In detail, RDF is a solid substance that pulverizes and dries materials containing thermoplastic resins (such as plastic films) or waste, and compresses them to form a finger-sized solid. RDF is suitable as a solid fuel because it has less water content and a well-adjusted shape. Since RDF often contains a vinyl chloride film in the material, RDF does produce dioxin during incineration. In this case, the inventors attempted to add a dioxin production inhibitor according to the present invention to the manufacture of RDF, and successfully manufactured an RDF involving less dioxin production. As mentioned above, when manufacturing RDF, add some quicklime to dry (remove water content). The inventors added the dioxin production inhibitor of the present invention in a powdered state in an amount of 0.2 to 5 wt% with respect to the dry waste to replace the quicklime. At a load of about 0.5 to 1.5% by weight, particularly about 0.7 to 1% by weight, a sufficient effect of dioxin removal is provided. • 12- 508275 V. Description of the invention (n) The best implementation of the invention (Example 1) 66% by weight of calcium compound as highly reactive quicklime (manufactured by As hi da chi Lime Co., Ltd., containing 73% by weight) CaO) mixed with 19% by weight of activated coffee powder (less than 200 mesh) as adsorbent and 9% by weight of activated fly ash, as shown in Table 1, and 5% by weight of less than 40 mesh as degrading agent After using tea leaves, 25% by weight of water was added and kneaded, extruded to form 2 mm × 5 mm particles, and dried at 120 ° C. to form particles to obtain dioxin production inhibitor. The generated dioxin production inhibitor was dispersed in the RDF (5 kg) incinerated in the small incinerator (or burner) shown in Fig. 1. The amount of dispersion was 0.7% by weight of RDF. The incinerator 1 shown in FIG. 1 is used in a small-scale factory and includes a spreader 2 outside the furnace to feed the dioxin-producing inhibitor into the furnace, and a scattering device 3 to disperse the inhibitor in the incinerated waste on. The capacity of the incinerator is 1 cubic meter. The powder material removes the hydrogen chloride gas' from the combustion gas and the fly ash, and the granular material removes the hydrogen chloride gas from the residual ash, thereby suppressing the generation of dioxin. Fig. 2 is a plan view of the scattering device 3, and each of its four blades 31 is twisted in the middle. At the time of incineration, the combustion gas was taken out through the measurement port to measure the hydrogen chloride gas concentration in the combustion gas, and the concentration was found to be 118.2 mg / m3, as shown in Table 2 (measured by Himec Co., Ltd., Chugoku District Office). -13- 508275 V. Description of the invention (12) Table 2 Samples Hydrogen chloride gas concentration (mg / m3) Example 1 118.2 Comparative example 442.0 (Comparative example 1)

RDF (5 kg) was similarly burned in the same incinerator as in Example 1 without using the dioxin production inhibitor of the present invention. The hydrogen chloride gas concentration in the combustion gas was measured and it was displayed as 442.0 mg / m3, as seen in Table 2. '' From the above, it can be understood that the use of the dioxin production inhibitor according to the present invention in a small incinerator for general households reduces the hydrogen chloride gas production to about 1/4 ° (Example 2)

A large-scale burner or incinerator 4 may use an externally installed inhibitor disperser 6, as shown in FIG. 3, to disperse the dioxin-producing inhibitor on the waste incinerated on the waste incineration / mobile grid 5. In this case, it is sufficient to install the diffuser 6 without modification of the combustion furnace 4 originally used, so it is quite economical. RDF manufacturing plants partially burn RDF to dry waste materials. The combustion furnace used in this case may have substantially the structure shown in FIG. Manufacture RDF (according to the present invention) in which the dioxin production inhibitor of the present invention is mixed and kneaded at a ratio of 1.5% by weight (relatively dry waste), and RDF in which lime is mixed and kneaded at 2% by weight as described above, and separately In the same general rule -14-508275 V. Description of the invention (13) Combustion in a mold combustion furnace to dry the waste to measure in accordance with the method [Is K 0 3 1 1 -1 999] and gas chromatography mass spectrometry Born of Dioxin. The measurement results are not shown in Table 3 (weight measurement_B a b-H i t a c h i I n du s t r i a 1 company). Table 3 Sample Dioxin (Nike-TEQ / m3) Example 2 0.063 Comparative Example 2 0.11

Dioxin: PCDDs + PCDFs + CoPCB As shown in Table 3, the dioxin produced by the RDF according to the present invention is 0.063 nanograms-TEQ / cubic meter (nanograms). This solution addresses the 1 nanogram of the large-scale burner that has been instructed in the Heisei 14 (2002) regulation, and the 0.1 nanogram newly proposed in the He 1 s en 14 regulation. Regarding the small-scale burners for domestic use, the 提出 mentioned in the regulations are 10 ng and 5 ng each, without causing any problems at all. (Comparative Example 2) The conventional RDF did not resolve the newly proposed He 1 s e 1 1 4 regulation. In this comparative example, the dioxin inhibitor was partially mixed, which caused the possibility that dioxin was generated at a low deviation from the actual state. It can be inferred from the fact that the hydrogen chloride gas measurement results of the samples obtained simultaneously with the dioxin measurement do not have a clear difference, as can be seen in Table 4, that is, the hydrogen chloride gas measurement results shown in Comparative Example 1 and Comparative Example 1 only show a considerable difference. The difference, and the point of view of the difference between the dioxin concentration in the residual ash described by the referencer in Example 3 and Comparative Example 3 below, are only fairly small among the examples in the case of Table 4. With -15-508275, the inference on the description of the invention (14) may also be explained based on the fact that Examples 1 and 3 use a small-scale burner 'and Example 2 uses a large-scale burner and any differences caused by it. Table 4 Sample hydrogen chloride gas concentration (mg / m3 / N) Example 2 3.9 Comparative Example 2 4.8 Hydrogen chloride gas concentration: 〇2 12% conversion rate JIS K 0107 Mercury thiocyanate method (II) Specific absorption measurement method (Example 3) The measurement results of the dioxin concentration in the residual ash from the incineration test of Example 1 are not shown in Table 5 (measured by: Bab-Hitachi Industria 1). Table 5 Sample Dioxin (Nike-TEQ / m3) Example 3 0.033 Comparative Example 3 0.12

Dioxin: PCDDs + PCDFs + CoPCB Toxic Equivalent Concentration (Comparative Example 3) The measurement results of dioxin concentration in the residual ash from the incineration test of Comparative Example 1 are shown in Table 5. -16-508275 V. Description of the invention (15) As can be seen from Table 5, the concentration of dioxin contained in the residual ash in which the dioxin-producing inhibitor according to the present invention has been dispersed is about 1/4 as compared with the case where the inhibitor is not dispersed. According to a specific measurement result, the view point 'from the dioxin concentration 6-6 in the residual ash' is relatively small in the comparative example of the present invention. The reasoning is due to the use of RDF as a waste material in this example and comparative examples (note that RDF is mixed with quicklime). Effects of the Invention As can be seen from the above, the inhibitors for inhibiting dioxin production according to the present invention include an adsorbent having an excellent rate of adsorbing hydrogen chloride gas, and a reactive substance having an excellent reactivity with hydrogen chloride gas, as the main content, and additionally used when necessary. Degrading agent, granulate and dry the mixture of these materials. Therefore, the dioxin inhibitor has excellent ability to adsorb hydrogen chloride gas, and can greatly reduce the production of dioxin contained in the combustion gas and the residual gas, thereby greatly contributing to environmental sanitation. The invention also utilizes industrial waste as an adsorbent, which is better than saving resources, while providing the advantages of low cost and simple device and technology manufacturing. The method for incinerating waste according to the present invention involves dispersing a dioxin production inhibitor including granular material, powder material, or a mixture thereof on the incinerated waste, so that the powder material removes combustion gas and hydrogen chloride gas in fly ash, and the granular The material removes hydrogen chloride gas from the residual ash, and inhibits the production of dioxin. The dioxin production inhibitor according to the present invention can be selectively used in accordance with the scale of incinerators and burners for incineration of waste or garbage. Dioxin -17-

_J 508275 V. Description of the invention (16) The production inhibitor can also be used to incinerate dead grassland or field or wildfire without using an incinerator. Therefore, the present invention provides a simple device (though it has been implemented at a relatively high cost) to greatly reduce or reduce the dioxin concentration contained in the exhaust gas, and also greatly reduces the dioxin concentration in the residual ash (which is almost unacceptable in practice). ) To provide good news for serious environmental issues. Explanation of symbols 1 ..... incinerator 2 ..... diffuser 3 .... scattering device 4 ..... large-scale combustion furnace or incinerator 5 ..... waste combustion / Mobile Grid 6 ..... Inhibitor Disperser-18-

Claims (1)

508275 No. 901 1 2491 "Method of incineration of wastes that hardly produces dioxin, manufacturing method of inhibitors and inhibitors produced by dioxin" (Amended on May 30, 91) Six patent application scope: 1. A kind of dioxin that hardly produces A method for incinerating waste, which comprises: dispersing a mixture of granular material and powder material on the incinerated waste; the mixture includes an adsorbent having an excellent rate of adsorbing hydrogen chloride gas as a main content, and a hydrogen chloride gas Reactive substances with excellent reactivity or including adsorbent substances and reactive substances as the main content and granular materials that are easily degraded into powder materials by mechanical or thermal stimulation; By using powder materials to remove combustion gases and exhaust gases And the hydrogen chloride gas in the fly ash, and the granular material to remove the hydrogen chloride gas generated during the waste incineration and the hydrogen chloride gas in the residual ash to inhibit the production of dioxin. 2. A method of incineration of waste that hardly produces dioxin, which comprises compressing granular materials (including an adsorbent having an excellent rate of adsorbing hydrogen chloride gas as a main content and a reactive substance having an excellent reactivity with hydrogen chloride gas) To the burning place of the incinerated waste, to remove the hydrogen chloride gas generated during the incineration of the waste and to suppress the production of dioxin. 3. A method of incineration of waste that hardly produces dioxin, which includes 508275 6. The scope of patent application includes Prior to the incineration operation, the waste is mixed with granular material and / or powder material in advance, which includes an adsorbent having an excellent rate of adsorbing hydrogen chloride gas as a main content, and a reactive substance having an excellent reactivity with hydrogen chloride gas, thereby mixing, and thereby Removal of hydrogen chloride gas in combustion gas, exhaust gas and fly ash and inhibit the production of dioxin. 4. The method of incineration waste that generates little dioxin, such as in any one of the scope of patent applications 1 to 3, in which the adsorbent substance is synthesized Zeolite, fly ash, coffee powder, used tea leaves, or other plant waste The waste, or any of them being activated, and the reactive substance use at least one of the compounds of calcium oxide. 5. The method of incineration of waste that generates little dioxin, such as in any of claims 1 to 3 of the scope of patent application, wherein At more than 45 °, the inhibitor that inhibits dioxin production is spread on the incinerated waste; the inhibitor is a powder including at least one compound of calcium oxide and calcium hydroxide, and an adsorbent having an excellent rate of adsorbing hydrogen chloride gas. (Such as synthetic zeolite, fly ash, coffee powder, used tea leaves, other plant waste, or any of them activated), and other detergents; these materials are granulated and dried; thus causing inhibition The agent is partially degraded into a powder material. 6 · If you apply for Sra patent $ B Siege 1 to 3-the method of incineration of waste that does not produce Dior sheep, in which dioxin production inhibitor is based on phase The weight of the sealed waste in the dry state is 0.2 to 5 weights 508275 6. The proportion of the amount of patent application scope is distributed on the incinerated waste. 7. If the patent is applied for A method for incineration of waste that generates little dioxin, according to any one of items 1 to 3, wherein the dioxin production inhibitor is a ratio of 0.5 to 1.5% by weight relative to the weight of the waste in a dry state. Scattered on the incinerated waste. 8. An inhibitor that inhibits the production of dioxin, which includes a mixture of granular materials and powder materials. The composition of the mixture includes an excellent rate of hydrogen chloride gas adsorption as the main content. Adsorbent substances and reactive substances with excellent reactivity with hydrogen chloride gas, or include the adsorbent substances and reactive substances as the main content, and some granular materials that are easily degraded into powder materials by mechanical or thermal stimulation. 9 The inhibitor of dioxin production in item 8 of the patent scope, wherein the adsorption substance is synthetic zeolite, fly ash, coffee powder, used tea, or other plant waste, or any of them activated, and calcium oxide and At least one compound in calcium hydroxide is used as a reaction substance. 10. If the inhibitor of dioxin production is limited to the item 8 or 9 of the patent application scope, an organic substance or shell powder is added as a degradation agent, and the mixed material is granulated and dried. 1 1. A method for manufacturing dioxin production inhibitors, which comprises disposing of an adsorption substance (such as synthetic zeolite, fly ash, coffee powder, used tea leaves, or other plant wastes) having an excellent rate of adsorption of hydrogen chloride gas 508275 6. Scope of patent application (Or any of them activated), and powders of at least one compound of calcium oxide and calcium hydroxide, and if necessary, add some organic matter or shell powder as a degrading agent, and then granulate these mixed materials And dry. 12. The method for manufacturing dioxin production inhibitors according to item 11 of the scope of patent application, wherein the granular material is partially powdered by a granulator after being dried. 1 3. — A method for producing RDF with less dioxin production, which includes powders (such as synthetic zeolites, fly ash, coffee, etc.) that will absorb hydrogen chloride gas at an excellent rate when crushed, compressed, and made into solids Powder, used tea leaves, or other plant wastes, or any of them activated), and a mixture of powders of at least one compound of calcium oxide and calcium hydroxide is added to the crushing waste process. 14 · The method for producing RDF with less dioxin as claimed in item 13 of the scope of patent application, wherein the proportion of the powder mixture added is 0.2 to 5% by weight based on the relative dry waste weight. 15 · A method for producing RDF with less dioxin as claimed in item 13 of the scope of patent application, wherein the proportion of the powder mixture added is 0.5 to 1.5% by weight based on the weight of the relative dry waste.