The grate cooler clinker temperature high improvement measures

The grate cooler clinker temperature high 2020 - improvement measures 08 - 14 a company of 600 t/d production line, rotary kiln & Phi; 5. 2 m× 4 78 m, kiln gradient. 0%, and form a complete set of is the fourth generation of grate cooler Smith company. Cooling area 138. 8㎡。 Kiln system since its launch in July 2007, smooth operation, but the zipper machine from grate cooler is often appear on the hopper of large pieces of red clinker, temperature has been on the high side, at about 230 ℃. Not only the zipper machine equipment and the safe operation of cement process has a lot of hidden trouble, and has a certain influence on the strength of the clinker. The careful analysis, research, find the reasons and take the effective improvement measures. A, root cause analysis ( 1) Two or three times the wind temperature, low air temperature is low, two or three times a second wind temperature 1050 ℃ ~ 1100 ℃, kiln, before dawn fly sand large, poor grain clinker, the phenomenon of grate cooler with honghe, clinker storage zipper machine frequently rushed, cause after 3 room fan damper can't fully open. ( 2) Insufficient cooling air volume when the kiln production of more than 6000 t/d, grate cooler cooling air volume, part of the cooling fan motor power is small, appear the phenomenon of excess rated current, the cooling effect is poor. ( 3) High temperature period of insufficient cooling airflow grate cooler temperature of cooling air flow is insufficient, the secondary air flow, combustion of pulverized coal kiln head is not completely, plus is expected to adjust the burner, clinker from the kiln is pulverized coal burning in the grate cooler. ( 4) Kiln head 'top burn limestone grade volatility, when the raw ingredients for fires to burn into the kiln, the kiln head, the phenomenon of the roof to burn. ( 5) Grate seam congestion analysis grate seam have jam phenomenon, grate under low pressure. Clinker coal layer thick, the clinker grate bed less than state of suspension. Second, the transformation measures, 1) Increasing the grate cooler for wind air volume. In order to reduce the storage temperature of the clinker, must increase grate cooler air supply air volume, the changing structure of grate cooler for the wind. Company in June 2009 with annual long grate cooler for the transform. Grate cooler has eight sets of cooling fan, 6 wind chamber. One fan for CIS 1 room with the wind, no. 2 and no. 3, the fan for 1 room with the wind, 4 for 2 room wind fan, fan for 3 room 5 wind, 6 for 4 chamber wind fan, fan for 5 to 7 room with the wind, fan for 6 to 8 room with the wind. According to various wind chamber and the matching of the fan, we aimed at no. 1, 2, 3, 6, 7, cooling fan. Grate cooler fan transformation are shown in table 1. Table 1 grate cooler fan transformation ( 2) Strengthen the control of operation management, make three unified operation, it is forbidden to appear top burning phenomenon, the thermal stability of stove system. ( 3) To strengthen the operation of the grate cooler, stable and reasonable material layer thickness, the clinker maximize cooling. ( 4) Replacement of cooling air shed at the same time the air flow regulator for specifications. ( 5) Clean up after downtime of grate plate grate. Three, the transformation effect ( 1) By increasing the quantity of CIS room, clinker cooling achieved the effect of quenching cold and heat recovery efficiency is improved, the secondary air volume increases, the secondary air temperature of 1150 ℃ ~ 1200 ℃, improve the efficiency of the pulverized coal combustion, thus raising the calcining zone, the temperature of clinker quality of grain, and also has very much improved. ( 2) Through technological upgrading to increase the cooling air volume, grate cooler red material, no phenomenon of the red river, clinker storage zipper machine no longer flow, 3 rooms after grate cooler fan air door is opened entirely, the grate cooler clinker temperature is reduced to about 90 ℃, effect is obvious. （ Source: China cement spare parts network)