초록 ▼

The present invention provides an incinerator and fume separator device and a method for burning such materials as refuse, tire chips and sewage sludge or combinations thereof as well as other combustible materials to generate steam to supply steam heat and/or electricity to towns, villages or indiv

The present invention provides an incinerator and fume separator device and a method for burning such materials as refuse, tire chips and sewage sludge or combinations thereof as well as other combustible materials to generate steam to supply steam heat and/or electricity to towns, villages or individual establishments. One of the key features of the system is the use of a horizontal conduit, wherein gases are initially cooled by a water-cooled conduit, part of the particulate material being removed within this tubing by use of baffles and fly ash settling chambers. The gases proceed through this conduit at a relatively high velocity and then through various fume separators located along the conduit by which the gases are intimately mixed with a liquid alkaline solution, such as lime water, by the propelling action of a ribbed slinger or propellor type device, located within the separator which because of its high speed and shearing action produces a cyclonic effect, thereby insuring intimate contact between the acidic contaminants in the gas and the fine droplets of alkaline material. Located underneath the ribbed slinger is a backwardly curved fan to pull the gas-alkaline liquid mixture downward and insure an even more intimate mixing of the contaminated gases and alkaline liquid. The purified gases are then exhausted into the atmosphere. According to the present invention, a variety of trash materials can be incinerated to generate steam and the exhaust gases can be effectively purified.

대표청구항 ▼

A process for producing the steam to heat establishments or to generate electricity by incinerating combustible materials such as trash, sewage, tire chips or coal and mixtures thereof in a furnace, while purifying the acidic exhaust gases produced from the combustion of such materials, comprising f

A process for producing the steam to heat establishments or to generate electricity by incinerating combustible materials such as trash, sewage, tire chips or coal and mixtures thereof in a furnace, while purifying the acidic exhaust gases produced from the combustion of such materials, comprising feeding the combustible materials into a furnace wherein said materials are burned at temperatures up to about 1800°F.; passing the gaseous products of combustion from such burning operation as contaminated exhaust gases over water-containing boiler tubes located within the furnace for generating steam from such boiler tubes to be tapped off for heat or electricity generating purposes; passing the contaminated exhaust gases through a water-cooled economizer; directing the exhaust gases through a water-cooled horizontal conduit closed at the downstream end thereof wherein the gas is passed through a series of baffles and fly ash settling chambers, whereby the larger particulate waste materials in the exhaust gases are preliminarily removed; passing the contaminated exhaust gases along said water-cooled horizontal conduit and through a plurality of acid and alkaline resistant fume separators spaced along the length of the conduit and having inlets connected to the conduit, whereby the acidic exhaust gases are introduced into the fume separators through said inlets at high velocity and are mixed with an alkaline liquid introduced into said separators from an alkaline source to neutralize any acidic materials and to remove any smaller particles which may remain in the exhaust gases; each of said fume separators being composed of a container, a gas exhaust inlet, a rotary shaft centrally disposed within said container and means to rotate said shaft, a ribbed slinger attached to the upper portion of the shaft and having a bowl-shaped solid disc with ribbed portions located within and protruding upwardly from the interior of the disc with a rotary shaft extending approximately through the center of the disc and the outer periphery of the disc in close proximity to the interior of the container, a centrifugal fan having the blades curved in the direction opposite to the direction of the rotation of the fan, said fan being attached to the lower portion of the shaft below the ribbed slinger, a conical open ended device connected to the walls of the fume separator means, which device is located underneath the ribbed slinger with the smaller end of the cone directed towards the center of the fan so as to funnel the contaminated exhaust gas-alkaline liquid mixture into the center of the fan, liquid baffle means around said fan, a drain at the bottom of said fume separator below said baffle means and having a drain exit therein, and a central opening in the bottom of said container to emit the purified exhaust gas, said fume separator forming three distinct gas purification zones when the shaft is rotating at high velocity in which the contaminated exhaust gases are successively treated and purified in the following zones: (A) a contact zone in which the exhaust gas is introduced at the gas inlet and propelled downward in a cylonic flow due to the relative movements of the ribbed slinger and centrifugal fan and wherein the exhaust gas is intimately mixed with an alkaline liquid introduced into the fume separator such that it contacts the ribbed slinger disc located below the exhaust gas inlet, whereby the liquid is broken up into fine droplets by the propelling and shearing action of the rotating ribbed slinger as the shaft is rotated; said slinger propelling the liquid perpendicular to the cyclonic downward flow of the exhaust gases so as to increase the contact time and insure intimate contact between the alkaline liquid and the contaminated exhaust gases; (B) a venturi zone located underneath the ribbed sligner caused by the downward pull of the gas by the centrifugal fan, said gas passing between the periphery of the spinning slinger and the interior walls of the container where it is funneled into a conical shaped container underneath the ribbed slinger to form a venturi turbulent zone due to the increased velocity of the gas, thereby insuring even more complete contact between the tiny droplets of solution and exhaust gases; and (C) a final separation zone wherein the alkaline liquid and contaminated gaseous mixture are directed from the conical shaped device into the center of the centrifugal fan located underneath the ribbed slinger, whereby the movement of the centrifugal fan drives the exhaust gas from the center of the fan through the blades forcing the remaining contaminants in the exhaust gas to be captured and neutralized by the alkaline liquid and directing the liquid against the baffle means and onto the wall of the fume separator container to separate the liquid from said mixture, which liquid is collected in a drain trough located beneath said baffle means and removed through the drain exit and wherein the purified gases are passed out of the separator through the central opening in the bottom of the fume separator.