Nichols Engineering & Research Corporation

Other

Ernest Andres Lado

Edwin J Bonner

Haagen Bach Nielsen

An apparatus and process for the incineration of sewage sludge in a concurrent-flow multiple hearth furnace-incinerator which complies with the fundamental thermodynamic conditions required to establish a sustained and stable combustion condition. The sewage sludge is incinerated to a truly inert and odorless ash, while yielding off-gas which has been burned free of all malodorous and condensable volatiles from which trouble-free steam and in-house electric power can be commercially produced and an excess sold to the local utility company.

Concurrent-flow multiple hearth furnace for the incineration of sewage

Disclosed herein is an oil burner system for burning residual type fuel oils in a high temperature combustion zone or chamber, which includes a method and apparatus for operating the system to maintain the fuel oil at a low viscosity while preventing thermal failure by destruction of the burner which protrudes into the combustion zone or chamber. The fuel oil is preheated and introduced into an oil tube extending through a high temperature furnace wall into the combustion zone or chamber, and also a heated fluid is introduced into the oil tube for passage therethrough with the fuel oil, while the outer periphery of the oil tube is cooled where it passes through the furnace wall and into the high temperature combustion zone or chamber, as well as fabricating the oil tube from a material having a low coefficient of thermal conductivity.

Oil burner system

Apparatus and process for reclaiming limestone mud wherein a supply of the mud in a wet condition is passed to a spray type dryer and dried to a bone dry free-flowing powder by the use of hot drying air from a calciner furnace. The dry powder together with the exhaust gases are then passed to a dust collector for removing substantially all of the fines from the gases. The spent lime powder may then be back-mixed with some of the original spent mud in proportions designed to yield a calciner feed having the desired moisture content for optimum physical condition of both feed and calcined product. The pugged mixture is then conveyed to the top of the calciner furnace and passed downwardly through successive zones including a heating zone, a drying zone, a decomposition zone wherein the spent lime is decomposed into calcined lime and gaseous carbon dioxide, and a second heating zone to increase the density without loss of activity thereof, while passing hot gases upwardly in countercurrent flow with respect to the downwardly flowing spent lime. The calcined lime is discharged at the bottom of the furnace and conveyed to a cooler wherein the temperature is reduced to usable levels for recycling in the system.

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Belle Mead, NJ, United States of America

Ernest Andres Lado