Q & A's Waste To Energy Waste Processing Unit (WP Unit)

When the residue reaches its melting temperature, it is automatically sent to a by-product collector, this by-product collector is equipped with a water cooling system and a conveyor belt, the water is al-ways kept at a low temperature for cooling to occur abrupt since the by-product comes in contact with water between 1,250 to 1,580ºC.   There is no separation of the metal, the process melts the residues completely, the difference in density and incompatibility of connection causes a natural separation, for example molten glass (silica) does not completely bond to a stainless steel part.

Yes, When asbestos is heated above 800ºC the chrysotile decomposes into non-fibrous forsterite mineral. Chrysotile Melting Temperature is 1,450 to 1,500. the Unit technology creates temperatures above 1,500 to facilitate the melting of the material, and a portion of it will turn into silica.

The WP Unit features a design that maximizes safety as it is equipped with anti-explosion systems. On top of the fusion module is installed a valve that moves as the internal pressure increases instantly, preventing explosions.

In the event of a power outage, bypass valves are installed at the fusion module outlet that direct all the gas into the atmosphere to prevent this gas from standing still inside the fusion module.

In order for the melting torches to be supplied with gas and air, the system goes through a pressure and flow check control and also a leak check, if these parameters are incorrect a fault system is activated and the equipment is not supplied.

For safety reasons, for any fusion module door that is opened the grinding is paused, and only resumes when the doors close.

For any fault a visual and audible alarm is issued on the equipment control screen.

All equipment complies with safety regulations, Regulatory Standard 12 br, safety at machinery and equipment work Created by the Ministry of Labor and Employment, Regulatory Standard No. 12, aims to ensure that machinery and equipment are safe to use worker.

The equipment has level sensors that control the levels of waste feed so that there is no overload of the feeders. The same is true for sodium bicarbonate feeders.

If there is a pressure drop the system stops for the operator to check the leak location and failure.

The methodologies employed in the measurements are described in the methods of ABNT - Brazilian Association of Technical Standards, CETESB - Company of Environmental Sanitation Technology and of the “Environmental Protection Agency of Unity States of America” mentioned below:

EPA E CETESB

 USEPA 01 – Sample and velocity traverses for stationary sources;

 USEPA 02 – Determination of stack gas velocity and volumetric flow rate;

 USEPA 03 – Gas analysis for carbon dioxide, oxy en, excess air and dry molecular weight;

 US EPA 04 – Determination of moisture content scakt gases;

 US EPA 05 – Determination of particulate emissons from stationary sources;

 US EPA 07 – Determination of nitrogen oxide emissions from stationary sources;

 US EPA 08 – Determination of sulfuric acid mist and sulfur dioxide ox emissions from stationary sources;

 USEPA  23 – Determination of Polychlorinated Dibenzo-p-dioxins and Polychlorinated Dibenzofurans from Municipal Waste Combustors;

 US EPA 50 – Determination of HCL/CL2 emissions from stationary sources;

The tests are conducted by measuring with calibrated equipment and standards traceable to in-ternational references.

All equipment is calibrated and accompanies the calibration certificate.

Provided to perform the services the following equipment:

 Isokinetic collector of atmospheric pollutants for sampling ducts and chimneys from stationary sources (CIPA);

 Sampling Probes and Pitot Tubes for collecting ducts with temperatures above 800ºC;

 NOx sampling kit: vacuum pump, “U” pressure gauge, T-valve calibrated volumetric flasks and pro-tec-tive housing;

 CONFOR OPTIMA 7 analyzer for direct reading of flue gases for O2, CO2, CO and excess air analysis;

The fusion WP Unit module fuses the waste through the high temperature torches. The solid part of this molten residue is conveyed to a collection mat and the gaseous part is released by the upper part of the module, this gas fraction is the synthesis gas. then the fusion module fuses the waste and releases the synthesis gas. For optimal heat retention, the fusion module is lined with refractory bricks, it helps to conserve heat making the process more efficient avoiding losses to the environment.  

We are able to reach very high temperatures and transition between the first chamber at 9000C and the second chamber at 16000C because the WP Unit is equipped with gas burners assisted by low-amperage (back-plasma) electric discharges. Transient because it is in the range between cold plasma and thermal plasma and has anomalous behavior: sometimes the amperage may increase with the discharge sometimes it may decrease, today we work with 3 amps, up to 10 amperes is still considered transient plasma.  

The Waste Processing Unit is in a technological classification of its own after more than 10 years of R&D from a brilliant team of scientists and in the invention of its technology which puts this Unit ahead of plasma, Incineration, Gasification and also traditional pyrolysis. The WP Unit is thought of as a quantum leap over traditional Pyrolysis in part because two thermal processes, one at 9000C and the other at 16000C, forming a thermal gradient, liquifying all solids completely, even inert materials such as sand or iron. 

WP Unit completely destroys the garbage effectively and safely, without combustion or an auxiliary equipment. 

The WP Unit requires no combustion of waste and disintegrates as a whole, completely destroying infectious, pathological and organochlorined materials, having as a solid byproduct a ceramic matrix (do not produce ashes) and inert in the bottom of the fusion module, with commercial application - the gases formed in the process have no dioxins or furans and are of low volume because they only arise from the disintegration of the material and not from combustion or gasification traditional processes.

The fusion module, in turn, works in negative atmosphere, preventing gas leaks. The process is dry distillation of the waste, with absence of air, no combustion of waste, which provides extreme reduction of the exhaust gases as compared with conventional processes and moreover, does not allow the formation of dioxins or furans, in view of lack of oxygen and high temperature. 

The garbage is not mixed with the atmospheric air and suffers a dry distillation, meaning it is completely disintegrated and liquified in the absence of air, which considerably reduces the formation of pollutants harmful to the environment and health, including carcinogens. The gases formed inside the fusion module, are suddenly sucked and cooled (quench) to then be treated and neutralized in an immersion tank, alkaline. Last generation filters, coal-based activated, ensure that the emissions meet environmental standards.

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