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Incineration furnace for pasty products, in particular sludge from purifying stations

A sludge incineration and incinerator technology, applied in incinerators, combustion methods, combustion types, etc., can solve the problems of people not quickly observing, permanent clogging of sludge, clogging of injection nozzles, etc.

Active Publication Date: 2016-05-18
DEGREMONT SOC DITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of injection can cause several problems: on the one hand the injection nozzles can clog and this clogging is not quickly observed, on the other hand this clogging can cause the sludge to be carbonized at the opening and permanently block the injection nozzle
But this solution is more expensive, because the booster pump is more expensive

Method used

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  • Incineration furnace for pasty products, in particular sludge from purifying stations
  • Incineration furnace for pasty products, in particular sludge from purifying stations
  • Incineration furnace for pasty products, in particular sludge from purifying stations

Examples

Experimental program
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Embodiment Construction

[0025] from figure 1 Incinerators for pasty products, especially sludge from sewage treatment plants, fluidized beds with granular materials, especially sand, can be seen.

[0026] The incinerator 1 has at its bottom a wind box 2 on which a sand bed 3 is placed. The bellows 2 are connected to the delivery end of a blower, not shown, for blowing air through the bed 3 . Pipelines, not shown, make it possible to pass air from the air box to the sand bed 3 to ensure fluidization of the sand. Above the sand bed there is an afterburner zone 4 with an opening above and a flue gas output duct 5 .

[0027] Two injection nozzles 6 and 7 are located on either side of the sand bed 3 , preferably diametrically opposite, enabling the injection of the sludge to be incinerated into the sand bed 3 . The feed to the nozzles 6 and 7 is regulated by opening and closing the respective valves 8 and 9, preferably solenoid valves. The feeding of the pressurized nozzles takes place by means of pip...

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Abstract

An incineration furnace (1) for pasty products, or sludge, with a bed of granular material fluidised by injecting a gas stream, the furnace comprising at least two injection nozzles (6, 7) for injecting products into the bed, supplied respectively by a pipe provided with a valve (8, 9) and linked to the discharge of a same pump, and a pipe for discharging the combustion gases (5); the furnace (1) comprising at least two temperature sensors (11, 12) located above the bed of granular material (3), each temperature sensor (11, 12) being located in an area associated with at least one injection nozzle (6, 7), and a means (A) sensitive to a temperature difference between the sensors (11, 12), capable of detecting the clogging of at least one nozzle when the temperature difference exceeds a predefined value.

Description

technical field [0001] The invention relates to an incinerator for pasty products, in particular sludge from sewage purification stations, with a bed of granular material fluidized by injection of a gaseous fluid, said incinerator being of the class comprising injecting pasty products into the bed At least two injection nozzles are fed by pipes provided with valves and connected to the delivery end of the same pump, respectively, and gas discharge pipes are also included. Background technique [0002] When burning pasty products in incinerators with a fluidized bed, more efficient injection is obtained by pumping directly on the bed of granular material. In fact, the pasty product is evenly distributed over the bed of particulate material and burns more efficiently and completely. The injection of the product is carried out through a defined number of nozzles inside the bed. However, this type of injection can cause several problems: on the one hand the injection nozzles c...

Claims

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Application Information

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IPC IPC(8): F23G5/30F23G5/50F23G7/00
CPCF23G5/30F23G5/50F23G7/001F23G2203/50F23G2207/101F23G2207/20F23G2209/12
Inventor P·E·帕尔多
Owner DEGREMONT SOC DITE
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