Flue quenching method and apparatus thereof

A flue gas quenching and rapid cooling technology, which is applied in the field of flue gas quenching, can solve problems such as complex equipment structures, and achieve the effect of low cost and simple structure

Inactive Publication Date: 2006-04-12
江苏福昌环保科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the existing dioxin removal methods have the disadvantages of complex equipment structure, inability to effectively and cheaply prevent the dioxins produced by high-temperature combustion from being in a high-temperature decomposition state, and the exhaust gas secondary to dioxins during cooling.

Method used

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  • Flue quenching method and apparatus thereof

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Experimental program
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Effect test

Embodiment Construction

[0010] Such as figure 1 The flue gas quenching device shown has a rapid cooling cylinder 1, one end of the rapid cooling cylinder 1 is provided with a high-temperature gas inlet 2, and the other end is provided with a gas outlet 3, the rapid cooling cylinder 1 is divided into two sections, and the first section is quickly Six serpentine tubes 4 are arranged side by side in the cooling cylinder 1, and there are cooling medium heat transfer oil or steam 5 in the serpentine tubes 4, and six straight pipes 6 are arranged in parallel in the second stage of rapid cooling cylinder 1, and the straight pipes 6 have The cooling medium water 7, the inlet 8 and the outlet 9 of the cooling medium 5 connected to the serpentine tube 4 are arranged on the first section of the quick cooling cylinder 1, and the inlet 8 and the outlet 9 of the cooling medium 5 connected to the serpentine tube 4 are arranged on the second section of the quick cooling cylinder 1, which is connected with the straigh...

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Abstract

A method and apparatus is used for reducing dioxins in flue by cooling sharply. The apparatus consists of a hot exhaust inlet, a cooling cylinder as outlet, which is divided into a first section and a second section, two at least spiral pipes installed in the first section, where heat conducting oil or steam as coolant is filled in the said pipes, and straight pipes installed in the second section, where cold water as coolant is filled in the straight pipes. Hot gas with discomposed dioxins at 850deg.C above is heat-exchanged with coolants in the cooling cylinder to be sharply cooled down below the temperature for re-synthesis of dioxins within one second. The method and apparatus are simple, and can effectively reduce dioxins in exhausts from various incinerators and furnaces while heat energy can be recovered for comprehensive uses.

Description

technical field [0001] The invention relates to a flue gas quenching method and device capable of preventing secondary synthesis of dioxins in flue gas discharged from various incinerators, melting furnaces and the like. Background technique [0002] When dealing with chemical residues and domestic waste, high-temperature incineration is used in an incinerator. After high-temperature treatment above 850°C in the combustion device, the chlorine components, hydrogen components, and other organic substances that constitute synthetic resins in the combustion materials become completely reacted and decomposed. Elemental molecules, dioxins that are harmful to the human body are decomposed and become harmless, but when cooled and the temperature drops to about 340°C, the resynthesis temperature of dioxins, dioxins will be synthesized again and regenerated. In order to prevent the re-synthesis of dioxins from the high-temperature exhaust gas decomposed at high temperature, the state...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23J15/06
CPCY02E20/30
Inventor 沈福昌
Owner 江苏福昌环保科技集团有限公司
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