KR900702299A - Method and apparatus for making hazardous waste into harmless mixture - Google Patents

Abstract

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Description

Method and apparatus for making hazardous waste into harmless mixture

Since this is an open matter, no full text was included.

1 is a schematic diagram of one embodiment of the invention, FIG. 2 is a partial cross sectional view of the oxidation means of FIG. 1, and FIG. 3 is a schematic diagram of an embodiment for accumulating particulate matter entering the oxidation means of FIGS.

Claims (59)

Providing a solid waste source composed of a large solid waste and waste particulates, introducing the large solid waste into a rotary furnace having an inlet, a combustion section and an outlet, the large solid waste and the waste particulates Controlling the operating conditions in the furnace to combust the large solid waste to form a first solid particle mixture, a clinker and a gas combustion byproduct, and to add a major portion of the volatile combustion components in the large solid waste. Volatilizing at the inlet, passing the gas combustion byproduct from the furnace by an induction ventilator, introducing the waste particulates into the oxidizing means, introducing a combustible material into the oxidizing means, and discarding the waste. Particulates are non-combustible particulates. Inducing combustion in the oxidizing means to convert molten slag and waste gas, controlling the temperature in the oxidizing means, and removing the non-combustible particulates and waste gas from the oxidizing means by the induction ventilator. Passing through, cooling the non-combustible particulates, gas combustion by-products and waste gas, separating the non-combustible particulates, gas combustion by-products and waste gas, and introducing the first solid particle mixture into the Reintroducing combustible particulates into the oxidizing means, colliding heat from the non-combustible particulates and the first mixture with the oxidizing means to form a mixture of molten slack and solid particles; Cooling the mixture of molten slack and solid particles to form a Method for turning hazardous waste into a harmless mixture. The method of claim 1 wherein the first mixture and the non-combustible particulates enter the oxidation means in a separate batch. 3. A method according to claim 2, wherein the site of the first mixture and the non-combustible particulates form piles in the oxidation means. 4. A method according to claim 3, wherein the oxidation means impinges heat on the surface of the pile. 5. A method according to claim 4, wherein said pile has an inclined outer surface to impinge heat from said oxidation means onto said surface. 6. The method of claim 5, wherein the inclined outer surface is melted and the molten metal of the face is operated from a face exposed to a new surface of the non-melted material on the pile. Way. The method of claim 1, wherein the rotary furnace is operated at an average internal temperature of about 1600-230 ° F. 10. 2. The method of claim 1 wherein the operating parameters of the rotary furnace are arranged to produce a solid product consisting of the first solid particle mixture. The method of claim 1, wherein said oxidizing means comprises a plurality of oxidants comprising at least a first and a second oxidant. 10. The method of claim 9, wherein the first oxidant receives gas combustion byproducts, additional combustibles in the form of liquid fuel, and waste particulates from the furnace, and the first oxidant operates at an average internal temperature of about 1800-3000 ° F. A method for making a hazardous waste, characterized in that the harmless mixture. 11. A method according to claim 10, wherein said liquid fuel consists of combustible liquid wastes. 10. The method of claim 9, further comprising reintroducing the non-combustible particulates back into the first oxidant. 10. The method of claim 9, comprising introducing the first solid particle mixture into the first oxidant. 10. The hazardous waste of claim 9, wherein the second oxidant receives combustion by-products and non-combustible particulates from the first oxidant and the second oxidant operates at an average temperature of 1800-2800 ° F. How to make a sex mix. 15. The method of claim 14, wherein the non-combustible particulate is reintroduced into the second oxidation. 15. The method of claim 14, comprising introducing the first solid particle mixture into the second oxidant. 15. The method of claim 14, comprising mixing the first mixture with non-combustible particulates and adding the mixture to the second oxidant. 10. The method of claim 9, comprising injecting oxygen gas into the first oxidant. 10. The method of claim 9, comprising injecting oxygen gas into the second oxidant. 10. The method of claim 9, comprising injecting waste liquid into the second oxidant. The method of claim 1, wherein the waste gas from the oxidizing means, gas combustion by-products and non-combustible particulates are cooled by injecting water into the oxidizing means to form a cooling effluent into the harmless mixture. How to make. 22. The method of claim 21, wherein the cooling effluent is cooled at a temperature of 350-400 degrees Fahrenheit. 22. The method of claim 21, wherein the acid in the cooling effluent is neutralized. 24. The method of claim 23, wherein the acid is neutralized by introducing a corrosive solution to form a neutralized effluent consisting of non-combustible particulates and waste gas. 25. The method of claim 24, wherein the neutralized effluent is separated by non-combustible particulates and waste gas by dry filtration. 27. The method of claim 25, wherein said dry filtration step is effective by a baghouse. The method of claim 1 wherein the furnace and the oxidizing means are operated at a pressure below atmospheric pressure. 2. The method of claim 1, comprising cooling the solid material exiting the furnace outlet. The method of claim 1, wherein the non-combustible particulate and the first solid particle mixture are accumulated in a container in fluid communication with the oxidation means. 30. The hazardous waste of claim 29, wherein the non-combustible particulate and the first solid particle mixture are placed in the coral means in response to the combustible particulate and the first mixture reaching a predetermined level in the vessel. How to make a mixture. Providing a solid waste source consisting of large solid waste and waste particulates, introducing the large solid waste into a rotary furnace having an inlet, a combustion section and an outlet, and introducing the large solid waste into the inlet and the combustion Inlet into a rotary furnace having a portion and an outlet, separating the bulk solid waste and the waste particulate, operating the furnace at an average internal temperature of 1600 ° -2300 ° F and a pressure below atmospheric pressure; Volatilizing a major portion of the volatile combustion material of the large solid waste at the inlet of the rotary furnace, and controlling the state of the rotary furnace such that the solid waste is combusted with a first solid particle mixture, a solid clinker and a gas combustion byproduct. And the main part of the solid material coming out of the outlet of the furnace consists of a first solid particle mixture. And the waste particulates. Introducing a first oxidant in fluid communication with gas combustion byproducts, auxiliary fuel, and oxygen gas to the inlet of the rotary furnace, inducing a temperature and combustion of about 1800 ° -3000 ° F, and a portion of the waste particulates of the oxidant Melting to form a molten slack, passing gas combustion by-products from the first oxidant and unmelted particulate material through a second oxidant in fluid communication with the first oxidant, and the second oxidant Operating in an average internal temperature range of 1800 ° -2899 ° F and passing non-melt particulate material and gaseous combustion products from the second oxidant into a cooling and neutralizing vessel in fluid communication with the second oxidant; Cooling the non-melting particulate material and gaseous combustion byproduct from the second oxidant to a temperature of about 400 ° F or less in the vessel by injecting a liquid composed of water, and neutralizing Neutralizing the acid of the gaseous by-product from the second oxidant by injecting a corrosive liquid into the vessel to form a cooled gaseous effluent and cooled particulate matter, and subjecting it to dry filtration to cool the neutralized gas effluent and Separating the particulate matter, evacuating the neutralized gas effluent, mixing and accumulating the cooled particulate material and the first mixture, and mixing the mixed cooling particulate material and the first mixture. Periodically introducing into the second oxidant to form a pile adjacent to the bottom of the oxidant (in the oxidizer), the pile having an inclined outer surface and transferring heat from the first oxidizer to the slope of the pile Impinging on the bed and melting at least a portion of the material therein, and forming a molten mixture of the accompanying melt and any non-melt material. Mixing with the molten slack, removing the molten mixture from the oxidizers, and cooling the molten mixture to form the harmless, non-combustible mixture. To make a non-hazardous mixture. 32. The method of claim 31, wherein the waste particulate consists of contaminated dirt. 32. The method of claim 31 wherein the auxiliary fuel consists of combustible liquid waste material. 34. The hazardous waste of claim 33, wherein the combustible liquid waste consists of a liquid selected from the group consisting of organic solvents, waste petroleum products, liquid trilling wastes, paints and other organic and inorganic liquids. How to make a mixture. 32. The method of claim 31, comprising injecting the liquid into the second oxidizer. A rotary furnace having an inlet and an outlet end, an oxidation means adjacent to the inlet of the furnace, a solid waste material composed of large solid waste and waste particulates, the large solid waste, and the waste particulates Means, means for introducing the large solid waste to the inlet of the rotary furnace, means for introducing the waste prior to the oxidation means, and the large solid waste for the first solid particle mixture, clinker, volatile gas and gas combustion byproducts. Means for inducing combustion in the presbyopia so as to convert to; and means for separating the clinker and the first solid particle mixture, and the waste particulates. Means for inducing combustion in the oxidation means to convert volatile gas and gas combustible by-products into non-combustible particulates, molten slag, and waste gas, and through the waste gas from the oxidation means and gas combustion by-products from the furnace Means for cooling, means for cooling the non-combustible particulates and waste gas, means for separating the non-combustible particulates and waste gas, and the non-combustible particulates for introducing the first solid particle mixture and forming an almost molten mixture. Means for reintroducing into the molten slag and means for cooling the molten mixture to form the harmless, harmless mixture. 37. An apparatus according to claim 36, wherein said oxidation means is comprised of a plurality of refractory line bricks in fluid communication with the inlet of said rotary furnace. 38. The process of claim 37, wherein the oxidizing means comprises a first oxidizer arranged to receive waste particulates from the furnace, volatile gas and combustion gas from the furnace by products. Device for making. 39. An apparatus according to claim 38, wherein said apparatus comprises means for injecting oxygen gas into said first incubator. 39. An apparatus according to claim 38, comprising means for injecting said oxygen gas into said first oxidizer. 39. The apparatus of claim 38, wherein the first oxidizer is embedded with a burner for heating material. 37. An apparatus according to Claim 36, comprising means for introducing said non-combustible particulates and a first mixture into said oxidation means. 43. The hazardous waste mixture of claim 42, wherein the means for introducing the non-combustible particulates and the first mixture comprises an accumulator for receiving the non-combustible particulates and the first mixture. Device for making. 44. The accumulator of claim 43, wherein the accumulator includes means for accumulating the non-combustible particulate and the first mixture until the level in the accumulator reaches a predetermined faucet, wherein the valve means connected to the accumulator includes the accumulated ratio. An apparatus for making a hazardous waste mixture, characterized in that it is arranged to pass a combustible particulate and a first mixture to said oxidation means. 40. The apparatus of claim 39, comprising means for introducing the non-combustible particulates and the first mixture into the first oxidizer. 39. The apparatus of claim 38, wherein the molten slack is removed from the first oxidizer. 39. An apparatus according to claim 38, comprising a second oxidizer in fluid communication with said first oxidizer. 48. An apparatus according to claim 47, comprising means for introducing said non-combustible particulates and a first mixture into said second oxidizer. 48. An apparatus according to claim 47 comprising means for injecting liquid into said second oxidizer. 48. A device according to claim 47, wherein the device comprises a tube between the first and the deoxidizer. 51. The apparatus of claim 50, wherein the tube comprises means for removing the molten slack from the oxidizing means. 50. The apparatus of claim 49, wherein the tube comprises a burner for heating material. 37. The method of claim 36, wherein the cooling means comprises a cooling vessel in fluid communication with the oxidation means and further comprises means for injecting water into the cooling vessel. Device. 54. The apparatus of claim 53, wherein the water is injected into the vessel at supersonic speed. 54. The apparatus of claim 53, further comprising means for injecting a corrosive liquid into the cooling vessel to neutralize the acid of the waste gas. 37. The apparatus of claim 36, wherein the means for separating non-combustible particulates and waste gas comprises a baghouse. 37. The process of claim 36, wherein the means for passing gaseous by-products from the furnace and waste gas from the oxidizing means comprises means for inducing sub-atmospheric pressure in the apparatus. Device for making furnace. 58. An apparatus according to claim 57, wherein said decompression means consists of at least one fan associated with said separating means. 37. The apparatus of claim 36, wherein the means for separating the large solid waste and the waste particulate comprises a rotary rod. ※ Note: The disclosure is based on the initial application.