Combustion – Fuel disperser installed in furnace – Furnace heated feed line section
Patent
1975-11-19
1976-11-30
Favors, Edward G.
Combustion
Fuel disperser installed in furnace
Furnace heated feed line section
110 72R, 431353, F23M 500
Patent
active
039946690
ABSTRACT:
A furnace and method of making the same are provided. The furnace has an integral poured refractory concrete combustion chamber wall having embedded therein a tertiary air supply system for supplying air around the burning fuels and air mixtures emitted from the burner. The tertiary air is introduced at positions spaced along the length of the combustion chamber.
The combustion chamber wall is produced by positioning manifolds and multiple air supply tubes spaced along the wall length with the tubes directed inwardly toward the flame and around it, but stoppng short of the inner surface of the poured concrete wall. Removable plugs or screws are inserted into the open tube ends and extend the tube ends to the position of the proposed inner surface of the wall.
Forms are provided for pouring the refractory concrete to form the wall. The outer form can be a steel plate or sheet or the like of relatively rigid structure. The inner form is flexible and preferably of a heat resistant and corrosion resistant material such as stainless steel. The inner form is supported and retained in position during pouring of the refractory concrete by use of an inflated bag or steel bands for bracing the form. After the concrete is poured and has set, the bands or bag can be removed. The plugs or screws, which extend through the flexible inner stainless steel wall are removed leaving a ports through the refractory concrete which connect the air supply tube ends with the combustion chamber interior. Thus, the portion of the air supply system closest to and entering into the combustion chamber has walls consisting of refractory material so that the less heat resistant supply tubes are not directly exposed to the full heat and corrosive atmosphere of the combustion chamber itself.
REFERENCES:
patent: 441062 (1890-11-01), Gearing
patent: 1177067 (1916-03-01), Amburgh
patent: 1625082 (1927-04-01), Helbig
patent: 2927632 (1960-03-01), Fraser
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