WO2001085645A2 - Device for household refuse treatment - Google Patents

Description

 HOUSEHOLD WASTE PROCESSING DEVICE

The present invention relates to the manufacture of an adsorber, equipment necessary for the application of patent No. 97005007 property of the company DCM. „

The technical part of the invention is to perfect on an industrial level, equipment comprising a "moving floor" technique known in particular for the collection of household waste, but on the other hand from this concept of allowing the recovery of energy released by the chemical reaction during the operation of the equipment considered, by heat exchange of the longitudinal walls.

Furthermore, following the concept of the process, it will be fitted with a distributor of incoming product. Finally, this equipment will include a safety installation to compensate for any failure resulting from a runaway of the process under the action of materials during the reaction treatment. not in accordance with the class of material to be treated and without our knowledge The operating pπncipe consists in engaging in the adsorber made of steel sheet cf a useful volume corresponding to the hourly flow rate of the products to be treated according to the plan α-described after (figl and fig2) a product previously mixed with chemical reagents of compounds of carbonaceous, cellulosic elements, putrescible materials, ises, droppings, peat, grease and sludge from treatment plants in the receptacle (2, fig. 1), which mixture is distributed over the first third of the equipment surface by distribution and release screws (3, figl). The moving floor is driven by an electric motor with frequency vaπabon and a fart transmission assembly advancing the product towards the part opposite the inlet (E, figl). It is also engaged by a set of screws (3 figl) to respond to the input flow. The speed of advance of the product towards the point (E.figl) takes place at very slow speed (from 10mm / min to 40mm / min). During the time during which this mass transfer takes place, the mixture introduced gives off an energy the temperature of which reaches 250 ° C. under low oxygen content. The product under the effect of this chemical reaction hydrates to give CaO + H∑O ... Ca (OH) 2 by the other reactants induced in the product, carbon dioxide emissions are obtained.

CO2 + H2O ... H *, HCσ ₃ + Ca (OH) CaCOa + H∑O

But also allows the capture of products from the decomposition of organic materials such. CaC + RNH3

As well as the smelly gases by forming: CaSθ, 2H2O, the neutralization of the bases Ca (OH) 2+ Mcf, the neutralization of acids and anhydπdes such: H2O + CaA2

The gases resulting from the transformation of this mixture are evacuated by the pipe provided for this purpose (C, fig1) and dπges to a scrubber duster

The product after having stayed for approximately 4 hours in this adsorber is driven by a set of screws for ejecting it (E, fιg1), driven by an electric motor with frequency variation Taking into account the temperature released on the longitudinal sides of the adsorber, there is a double wall (6, figl) and (6, fig2), in which circulates through retarders of the circuit glycated water or any other thermal fluid which penetrates by A, fig2, and leaves B , fig2. In A fig2 and B fig. 2 are arranged temperature sensors In the upper part of the adsorber are arranged on each side a ramp (5, fig1 and fig2) for injecting a neutral gas in the event of too high a temperature increase and also to avoid any fire risk This invention can be applied to the following treatments: production of organic amendment - production of compost

However, this can only be used in the context of patent No. 9705007 because it is the basic application. Said adsorber comprises at least one parallelepipedal steel assembly (9 figl and fig2) a recepbon hopper (2. fig1), a moving floor (1 figl and fιg2), a set of screws (3 figl) rotates by any external means (8 fig2), which ensures the rapid transfer of the product entering (D.figl), a set of screws ((4 figl) driven in rotation by any external means (8.tig2), which ensures the crust formation of the product by a rotation movement of the screw at slow speed and the extraction thereof. The adsorber has on its longitudinal side walls a double steel body (6 fig2) fitted with a heat transfer liquid inlet pipe (A.fιg1) and an outlet pipe for the heat transfer product (B.figl) allowing the recovery of the calories released by the exothermic reaction. The pipes (A and B fig 1) are fitted with temperature sensors. The body of the adsorber (9.fig1) is equipped with an opening with double airlock and glazing (10.fig1) allowing the installation of an infrared camera in order to constantly monitor the reaction so that if necessary use the distribution ramps of neutral gas (5 figl etfig2). Similarly the body (9.fig1) of the adsorber has on its upper side an airlock for taking samples (^ 1.figl) to check the reaction behavior and making it possible to readjust the proportion of reagents and / or the total reaction of the elements and obtain the expected result.

Claims

1. Equipment called ADSORBOR (9.fιg1) allowing the phenomenon of adsorption between a set of heterogeneous products mainly composed of putrescible, cellulosic, carbonaceous materials and chemical reagents presenting no risk either for, man or the environment respecting the general rules cf industrial hygiene with a view to carrying out an exothermic reaction at a temperature of 250 ° C. in a confinement zone without the addition of oxygen, characterized in that: - we introduce the heterogeneous product by (2.1ig1) - we pour the heterogeneous product by (3.fig1) on the moving floor (1.figl) - the formation of crusting is avoided by (4.fig 1) - this mixture is maintained for approximately 4 hours under permanent surveillance by acting on the speed of advance of the heterogeneous product deposited on the moving floor (1.fig.1) - the energy released by the exothermic reaction is recovered on the double wall of the longitudinal faces (6.fig2) of the body (9.tlg1) of this equipment by monitoring the temperature of the heat transfer fluid - the result of the reaction is monitored by taking samples (11.figl) - constant monitoring is maintained by the viewfinder (10.fig1) located on the transverse face of the body of the adsorber. - the treated product is recovered at the end of the time period by a set of screws (4.fig1), the gaseous effluents are evacuated through the tubing (C.figl) 2. Equipment according to claim 1 characterized in that it uses a moving floor system 3. Equipment according to any one of claims 1 to 2 characterized in that the adsorber includes a loading zone specific to our need (2.fig1) 4. Equipment according to any one of claims 1 to 3 characterized in that the adsorber (9.fig1) comprises a set of screws for loading and distributing the heterogeneous product (3, fig1) 5. Equipment according to any one of claims 1 to 4 characterized in that the adsorber (9.fig1) has a double wall system for the recovery of heat energy from the exothermic reaction 6. Equipment according to any one of claims 1 to 5 characterized in that during the exothermic reaction the gaseous effluents are sucked through the tubing (C.figl) 7. Equipment according to any one of claims 1 to 6 characterized in that the result of the reaction is carried out by taking the sample (11.fig1) provided for this purpose. 8. Equipment according to any one of claims 1 to 7 characterized in that the reaction is continuously followed by the sighting (10.fιg.1) 9. Equipment according to any one of claims 1 to 8 characterized in that the runaway of the reaction can be controlled by the injection of neutral gas using the ramp (5. Figl and fιg2.) 0. Equipment according to any one of claims 1 to 8 characterized in that the product is recovered in (E.figl) by a set of motorized screws (4.fig1 and 7 and 8.fig 2)