摘要:
In an automatic boiler having an internal hopper, a regulator plate 12 controls the flow under gravity of fuel to the firebed. For small particled fuel in particular the plate is provided with a torque 23 which causes a central thinning of the firebed. Thus, a centrally disposed shallow firebed is formed so that primary air can rapidly break through at this point to burn off volatile gases as they are distilled and cause ignition over the whole firebed.
摘要:
This invention relates to a process and apparatus for the combustion of pulverized coal, wherein the pulverized coal is introduced into a conditioned atmosphere having an overpressure, the overpressure being used to accelerate a flame jet, and wherein the flame jet is injected into an atmosphere having a temperature below the ash melting temperature of the fired coal.
摘要:
A grate assembly for a shell boiler comprising a fire bed supporting means including a first apertured support member and a second support member mounted for mutual relative movement between a first position in which the apertures in the first member are obturated by the second member and a second position in which the apertures are not obturated and drive means for causing relative movement between the first and second positions at a speed to permit passage of ash through the apertures whilst continuing to support the fire bed.
摘要:
An insert for the furnaces of particularly oil-fired boilers for intermittent operation, comprising an assembly of elements of fire-resisting glass of slight material thickness relative to their total surface area. The assembly is placed such that heat is accumulated therein at the same time as the property of the glass to transmit flame radiation is exploited.
摘要:
The invention relates to boilers using solid fuels in granular form.It comprises: (a) automatic feeding of the firebox with fuel by a reciprocating piston system forming a fire barrier in the rest position and actuated by a low power linear movement motor, and (b) combustion quickened by the supply of blown air and stirred by a system for discharging ashes and combustion residues out of the burner by the action of fingers integral with the piston.This type of boiler is suited for central heating as well as any other domestic or industrial hot water production.
摘要:
The invention relates to heating apparatus the use of which is recommended to meet the heat demand first of all of family homes and individual flats, or a small group of them.Substance of the heating apparatus according to the invention is, that it has grate construction connected with actuating mechanism, the open, hollow grate elements of which provided with air outlet openings at least at one of their ends are arranged along endless surface, furthermore it has air inlet head fitted to at least one of the front ends of the grate construction.It is advisable to form the grate elements from tubes and to arrange them along cylindrical surface.
摘要:
A wood and coal fired heating unit, comprising a magazine wherein is incorporated a preheating draft manifold, supplying all primary and secondary drafts to the combustion zone and secondary combustion chamber. Within the fuel combustion chamber a baffle, the same comprising a wall between said combustion zone and said secondary combustion chamber. The secondary combustion chamber is housed within the heater fuel combustion chamber for maximum temperature operation for completing the combustion of the unburned volatile gases leaving the primary combustion zone. With indirect primary draft in the primary combustion zone, in combination with the secondary combustion system, the invention being capable of sufficient combustion of the fuels considerably retarding formation of creosote.
摘要:
Fuel is burned in a primary combustion chamber with less than the air required for stoichiometric combustion so that the combustion gases have a high carbon monoxide (CO) and a hydrocarbon content and the temperature of the gases is held below that at which significant nitrogen oxides (NOx) would be produced. The combustion gases are then passed through a secondary combustion zone in which more air is injected into the gas stream to oxidize the CO and hydrocarbons to carbon dioxide (CO2). The secondary burner comprises a plurality of foraminous tubes through which secondary air is emitted. Combustion in the secondary zone is maintained at a temperature below that at which nitrogen oxides (NOx) will be produced in significant quantities.
摘要:
Fuel is burned in a primary combustion chamber with less than the air required for stoichiometric combustion so that the combustion gases have a high carbon monoxide (CO) and hydrocarbon content and the temperature of the gases is held below that at which significant nitrogen oxides (NO.sub.2) would be produced. The combustion gases are then passed through a secondary combustion zone in which more air is injected into the gas stream to oxidize the CO and hydrocarbons to carbon dioxide (CO.sub.2). The secondary burner comprises a plurality of foraminous tubes through which secondary air is emitted. Combustion in the secondary zone is maintained at a temperature below that at which nitrogen oxides (NO.sub.x) will be produced in significant quantities.