Solution for reducing power consumption in cement industry (vertical kiln enterprises)
Foreword China's national building materials industry's industrial policy of “changing big and small†is now stimulating the adjustment of kiln companies' ideas and actions. The output of the Han River this year is planned to reach 200,000 tons, and it is now planning a new dry process rotary kiln production line with an annual output of 1 million tons to create a broader space for future survival.
——The comprehensive analysis of electricity consumption in the case of the Hanjiang River as a reference to the rapid growth of China's economy has promoted the unprecedented prosperity of the cement industry, thereby attracting a large amount of capital to the rotary dry process production line. This gives the current shaft kiln companies a belt. A great deal of shock and pressure came.
The development path from small to powerful Hanjiang Cement Plant is the best policy for “saving the enterprise and saving the people†(development is the hard truth).
The consumption of electric energy accounts for 22%~30% of the total cost of cement, which is the main factor causing the high cost of cement. The Hanjiang Cement Plant will be used as an example to comprehensively discuss the solution to reduce electricity consumption.
Solutions for reducing electricity consumption Past presentations of the Hanjiang Cement Plant Strengthening process control and adjustment The past situation of the Hanjiang Cement Plant
Before 1998, the product cost of the Hanjiang Cement Plant was 186 yuan/ton, and the electricity consumption was 96~103 degrees/ton. At the time, the market price was 190 yuan to 210 yuan/ton, which was in the state of low-profit operation.
Increase technological input in saving electricity consumption
1. Roots blower application Flextronics inverter
1# fan 240KW
2# fan 200KW
(Director of raw materials, vertical kiln workshop: Comrade Huang Hao)
2. Raw material warehouse bottom stable material unloader with Wei Chuang inverter bottom warehouse 12 2.2KW motor single-tube stable material unloader application Flextronics inverter can improve the situation of incoming instability; can be based on the kiln The calcination condition is balanced with the proportion of multiple warehouses to improve the calcination status; at the same time, the phenomenon of burning the motor is eliminated.
3. Cement warehouse bottom stable material unloader with Wei Chong inverter cement warehouse bottom 12 2, 2KW single pipe unloading machine inverter application frequency
4. Concentrator, shaft kiln unloader, electric precipitator, heating fan with Wei Chong inverter raw material mill, cement 4 separators, 1 # and 2 # kiln clinker unloading machine, 6 sets of dust collector exhaust fan, drying furnace 22KW fan application Wei Chong inverter
5. Using energy-saving transformers (1) Originally used 35KV and 10KV two-way power supply, changed to 35KV power supply all the way (2) Advantages: node; reduce the time of inconsistent power outage and stop production; 35KV price is cheaper than 10KV (back)
Strengthen process control and adjustment
1. Use a new crusher to control the size of the incoming abrasive.
2. Strengthen control and control clay acquisition of water.
3. Optimize the ball steel egg accumulation and grinding structure.
4. Dynamically and reasonably adjust the raw material (clinker) formula.
5. Strengthen the ventilation inside the mill to reduce the phenomenon of excessive grinding; use static electricity within the grinding aid.
6. Multi-bank anti-cooking and feeding into the kiln.
7. Strict requirements ensure ball quality.
8. Reduce crushed clinker size.
9. Purchase dry fly ash.
10. Multi-library with packaging.
Results of Benefits Through the above technological transformation and strict and scientific management and control of processes, the benefits are substantial;
-1. The electricity consumption per ton has dropped from 96 degrees in 1999 to the current level of less than 66 degrees. The cement has dropped by 14 yuan per ton, saving 210 yuan in the whole year. It is not necessary to recover all the investment in half a year.
- 2. The cost per ton dropped from 186 yuan in 1999 to less than 130 yuan now, saving 8.4 million yuan in the whole year.
Foreword China's national building materials industry's industrial policy of “changing big and small†is now stimulating the adjustment of kiln companies' ideas and actions. The output of the Han River this year is planned to reach 200,000 tons, and it is now planning a new dry process rotary kiln production line with an annual output of 1 million tons to create a broader space for future survival.
——The comprehensive analysis of electricity consumption in the case of the Hanjiang River as a reference to the rapid growth of China's economy has promoted the unprecedented prosperity of the cement industry, thereby attracting a large amount of capital to the rotary dry process production line. This gives the current shaft kiln companies a belt. A great deal of shock and pressure came.
The development path from small to powerful Hanjiang Cement Plant is the best policy for “saving the enterprise and saving the people†(development is the hard truth).
The consumption of electric energy accounts for 22%~30% of the total cost of cement, which is the main factor causing the high cost of cement. The Hanjiang Cement Plant will be used as an example to comprehensively discuss the solution to reduce electricity consumption.
Solutions for reducing electricity consumption Past presentations of the Hanjiang Cement Plant Strengthening process control and adjustment The past situation of the Hanjiang Cement Plant
Before 1998, the product cost of the Hanjiang Cement Plant was 186 yuan/ton, and the electricity consumption was 96~103 degrees/ton. At the time, the market price was 190 yuan to 210 yuan/ton, which was in the state of low-profit operation.
Increase technological input in saving electricity consumption
1. Roots blower application Flextronics inverter
1# fan 240KW
2# fan 200KW
(Director of raw materials, vertical kiln workshop: Comrade Huang Hao)
2. Raw material warehouse bottom stable material unloader with Wei Chuang inverter bottom warehouse 12 2.2KW motor single-tube stable material unloader application Flextronics inverter can improve the situation of incoming instability; can be based on the kiln The calcination condition is balanced with the proportion of multiple warehouses to improve the calcination status; at the same time, the phenomenon of burning the motor is eliminated.
3. Cement warehouse bottom stable material unloader with Wei Chong inverter cement warehouse bottom 12 2, 2KW single pipe unloading machine inverter application frequency
4. Concentrator, shaft kiln unloader, electric precipitator, heating fan with Wei Chong inverter raw material mill, cement 4 separators, 1 # and 2 # kiln clinker unloading machine, 6 sets of dust collector exhaust fan, drying furnace 22KW fan application Wei Chong inverter
5. Using energy-saving transformers (1) Originally used 35KV and 10KV two-way power supply, changed to 35KV power supply all the way (2) Advantages: node; reduce the time of inconsistent power outage and stop production; 35KV price is cheaper than 10KV (back)
Strengthen process control and adjustment
1. Use a new crusher to control the size of the incoming abrasive.
2. Strengthen control and control clay acquisition of water.
3. Optimize the ball steel egg accumulation and grinding structure.
4. Dynamically and reasonably adjust the raw material (clinker) formula.
5. Strengthen the ventilation inside the mill to reduce the phenomenon of excessive grinding; use static electricity within the grinding aid.
6. Multi-bank anti-cooking and feeding into the kiln.
7. Strict requirements ensure ball quality.
8. Reduce crushed clinker size.
9. Purchase dry fly ash.
10. Multi-library with packaging.
Results of Benefits Through the above technological transformation and strict and scientific management and control of processes, the benefits are substantial;
-1. The electricity consumption per ton has dropped from 96 degrees in 1999 to the current level of less than 66 degrees. The cement has dropped by 14 yuan per ton, saving 210 yuan in the whole year. It is not necessary to recover all the investment in half a year.
- 2. The cost per ton dropped from 186 yuan in 1999 to less than 130 yuan now, saving 8.4 million yuan in the whole year.