Method for controlling temperature of reduction rotary kiln by optimization and adjustment of fuel amount
A rotary kiln, fuel volume technology, applied in the field of rotary kiln, can solve the problems of fuel system and temperature inconsistency, high energy consumption, low reduction efficiency, etc.
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Embodiment 1
[0123] like figure 1 As shown, a method for controlling the temperature of the reduction rotary kiln by optimizing and adjusting the amount of fuel is provided. The reduction rotary kiln 1 is equipped with an ultrasonic temperature measurement and ranging analyzer 2, and the kiln body of the reduction rotary kiln 1 is divided into n sections. There are secondary air nozzles 3, and each secondary air nozzle 3 is connected with a blower fan 4. The method includes the following steps:
[0124] 1) Put the material to be reduced into the reducing rotary kiln 1, add reducing fuel at the kiln head 101 and kiln tail 102 of the reducing rotary kiln 1, and inject secondary air from the secondary air nozzle 3 on each kiln body.
[0125] 2) A burner 103 is provided at the position of the kiln head 101 of the reduction rotary kiln 1, and the materials to be reduced are burned and reduced by reducing fuel in the reduction rotary kiln 1 to obtain the reduced materials.
[0126] 3) Ultrason...
Embodiment 2
[0129] like figure 2 As shown, Example 1 is repeated, except that the ultrasonic temperature measurement and distance measuring analyzer 2 detects the temperature of each section of the kiln body of the reduction rotary kiln 1, and compares the atmospheric temperature Ti obtained by the detection of the section of the kiln body with the target reduction temperature T 0 , if the atmospheric temperature Ti of the kiln body is at (1±10%)T 0 Within the range, return to step 3) The control system does not make fuel optimization adjustments. If the atmospheric temperature Ti of the kiln body exceeds (1±10%)T 0 within the range, proceed as follows:
[0130] 5a) If the section of the kiln body is located in the 1 / 3 or 1 / 2 section of the front section of the kiln body of the entire reduction rotary kiln 1, by adjusting the amount of reducing fuel added from the kiln head 101, the atmosphere temperature at the position of the section of the kiln body Ti at (1±10%) T 0 In the range....
Embodiment 3
[0133] Repeat Example 2, adding a measure to adjust the wind pressure of the kiln head 101 of the reducing rotary kiln 1 into the wind. Step 5a) is specifically:
[0134] 5a1) If the section of the kiln body is located in the 1 / 3 or 1 / 2 section of the front section of the kiln body of the entire reduction rotary kiln 1, adjust the wind pressure of the wind injected into the position of the kiln head 101, and the ultrasonic temperature measurement and distance measurement analyzer 2 detects the kiln body. Atmospheric temperature Ti at the kiln body position:
[0135] After adjusting the wind pressure of the wind injected into the position of the kiln head 101, the atmosphere temperature Ti at the position of the kiln body is (1±10%)T 0 Within the range of the current kiln head 101, the wind pressure of the wind injected into the position is kept constant, and the temperature adjustment is completed.
[0136] If the air pressure of the air injected into the position of the kil...
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