Muddy substance drying and incineration method and system
A material and muddy technology, applied in the field of dry incineration of muddy matter, can solve the problems of high operating cost, high energy consumption, large water consumption, etc., achieve good heat exchange effect, strengthen the drying process, and reduce energy consumption Effect
Active Publication Date: 2016-06-01
霍奇志 +1
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Problems solved by technology
[0003] The invention provides a method and system for dry incineration of argillaceous matter, which mainly solves the problems of high operating cost, large water consumption and high energy consumption in the prior art
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[0023] The present invention is an argillaceous matter drying and incineration system, aiming at reducing investment, operating cost, water consumption and power consumption, and has made major changes to the combustion method, heat transfer method, heat carrier type and drying method of the disposal process. Adjustment:
[0024] Specifically, the present invention incinerates part of the wet muddy matter directly in the fluidized bed furnace. The direct incineration of the wet muddy matter is simpler than the incineration after drying, but it can only use the available heat in the furnace, which generally only accounts for the combustion heat. About 55% of the high-temperature flue gas and steam leave the furnace to bring out the heat without being used, while the water in the simple dehydrated muddy matter reaches 75-80%, and the low calorific value of the air-dry basis is only 3000 kcal / kg. The calorific value is insufficient to incinerate all the wet muddy matter in the fu...
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The invention provides a muddy substance drying and incineration method and system. The system comprises an incinerator, a high-temperature cyclone separator, a gas-solid direct heat exchanger, a drying device and a condenser, wherein a high-temperature smoke and water vapor outlet is formed in the incinerator and is connected with a gas inlet of the gas-solid direct heat exchanger through the high-temperature cyclone separator; a solid outlet of the gas-solid direct heat exchanger is connected with an inlet of the drying device; a gas outlet of the drying device is connected with an inlet of the condenser; a solid outlet of the drying device is connected with a solid inlet of the gas-solid direct heat exchanger; and an outlet of the condenser is connected with a gas inlet of the drying machine via a compressing fan. A particle hot carrier serves as a heat source, the rest wet muddy substances are dried in a fluidized bed drying device, part of or all dry muddy substances are fed into the incinerator to burn so as to meet required heat, the cooled particle hot carrier will return to the gas-solid heat exchanger for recycling, and mass transfer and heat transfer of wet sludge particles and the particle hot carrier in the fluidized bed drying device are quite strong, so that the drying process is strengthened.
Description
technical field [0001] The invention relates to a method and system for drying and incinerating muddy matter, in particular to a method and system for treating muddy matter which combines direct incineration with incineration after drying. Background technique [0002] Take sludge disposal as an example: the existing technologies for sludge disposal by incineration are divided into three categories, one is to use other large-scale combustion equipment, such as power boilers, cement kilns, etc. for mixed combustion; the other is to press filter first , remove about 50% of the water, no longer dry, and directly incinerate in the fluidized bed furnace. This kind of process equipment investment, power consumption and land occupation are large, and the waste heat is not fully utilized; the most commonly used method is to put all the sludge in the In the dryer, it is first dried into dry sludge particles, and then incinerated in a fluidized bed furnace. The heat generated is broug...
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IPC IPC(8): F23G7/00
CPCF23G7/001F23G2201/10F23G2203/50F23G2206/10F23G2209/12
Inventor 霍奇志张诚
Owner 霍奇志