Roller kiln, tunnel kiln and shuttle kiln for proportional control pure oxygen combustion
A technology of oxy-combustion and proportional control, which is applied in the field of tunnel kiln, oxy-combustion roller kiln and shuttle kiln with proportional control, can solve the problems of unstable atmosphere, achieve good energy-saving effect, be conducive to environmental protection, and solve the problem of poor atmosphere. The effect of stabilizing puzzles
Inactive Publication Date: 2010-01-13
侯敬东
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Problems solved by technology
If the oxy-fuel combustion technology is used in roller kilns, the energy-saving effect is in the range of 30% to 50%, and in the range of 40% to 60% when used in shuttle kilns; The application of tunnel kiln causes the instability of the atmosphere, so it cannot be popularized and applied in a large area
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[0012] The oxy-fuel combustion method for roller kilns, shuttle kilns and tunnel kilns of the present invention will be further described below in conjunction with specific examples.
[0013] see figure 1 , thermocouple 1 detects the combustion temperature signal in roller kiln, shuttle kiln and tunnel kiln, and the signal is transmitted to temperature controller 2. After PID mathematical operation, PID is a kind of advanced mathematical proportional calculus, which outputs time signal, and at the same time For the actuator 3 and the pulse valve 4, the actuator 3 and the pulse valve 4 are respectively used to control the fuel in the gas main pipe 10 and the amount of oxygen added in the oxygen main pipe 7, so as to control the opening time of large and small fires. When a large fire is required, Open the actuator 3 and the pulse valve 4, and close the actuator 3 and the pulse valve 4 when a low-fire combustion is required. At this time, a small flow of fuel contacts with oxyge...
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The invention discloses a roller kiln, a tunnel kiln and a shuttle kiln for proportional control pure oxygen combustion, wherein at least one of the roller kiln, the tunnel kiln and the shuttle kiln adopts a pure oxygen combustion method which performs combustion through the flow control of the adding proportion of oxygen and fuels and controls the combustion temperature through pulse. The flow control adopts a volume flowmeter or a mass flowmeter. By adopting the roller kiln, the tunnel kiln and the shuttle kiln for proportional control pure oxygen combustion, the problem that the pure oxygen combustion technique has an instable atmosphere when being applied to the roller kiln, the tunnel kiln and the shuttle kiln is solved, the energy-saving effect is better than that of oxygen-enriched combustion, the energy consumption of the prior kilns can be reduced by 50 percent, the produced waste gas can be reduced by over 80 percent, the carbon dioxide discharge can be reduced by over 50 percent, and the generation of nitrogen oxides is less. The roller kiln, the tunnel kiln and the shuttle kiln not only are advantageous for environmental protection but also save the energy consumption.
Description
technical field [0001] The invention relates to a roller kiln, a tunnel kiln and a shuttle kiln, in particular to a ratio-controlled full-oxygen combustion roller kiln, tunnel kiln and shuttle kiln. Background technique [0002] Oxygen-enriched combustion is a combustion-supporting air with an oxygen content greater than 23%, most of which are used in the range of 28-35%, and have been successfully used in glass furnaces for more than 30 years. In roller kilns, shuttle kilns, and tunnel kilns, because the products fired are very sensitive to the atmosphere, and oxygen-enriched combustion is unstable to the atmosphere, it has not been widely used. It is well known that oxy-fuel combustion can save energy, but oxy-fuel combustion is very harmful. Nitrogen oxides (NO x ) is dozens or even hundreds of times that of air combustion. [0003] Oxygen combustion is a combustion-supporting air combustion technology with an oxygen content greater than 85%. The temperature of the flam...
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IPC IPC(8): F23N1/02
CPCY02E20/328Y02E20/32Y02E20/34
Inventor 侯敬东
Owner 侯敬东