ã€China Aluminum Network】
1000T-1# Sheng ingot change heating method report
1. Reason and purpose of change
Electricity is a kind of resource. Saving electricity is a means to realize comprehensive, coordinated and sustainable development. Saving electricity and electricity is a form of promoting economical steady and rapid development. Therefore, changing the heating method of Shengtong can facilitate the use of electricity and reduce the cost.
2, test program and principle
a, heating principle
Before replacement - use of "C" type resistance wire in the extrusion cylinder shell for heating, the temperature is transferred from the outer cylinder of the extrusion cylinder to the inner cylinder of the extrusion cylinder, the heating time is long, and the heating source is in the extrusion cylinder shell The heat is easily conducted to the air, as shown in Fig. 1 after the replacement. The barrel of the barrel of the squeeze tube is used to drill holes in the barrel of the squeeze tube, and then the heat pipe is implanted to directly heat the barrel of the barrel. Reduce heat loss, as shown in Figure 2
b. Test plan
Using the 1000T-1# extrusion tube as an experiment, the energy consumed by the original heating method and the changed heating method was tracked, and the consumption data of a single ton was used for comparison. Specifically for the squeeze barrel mounted a meter.
3, data collection and analysis
A, data collection, see its annex (attachments here to download)
B. Data comparison and analysis
a. Use month comparison, see table 1 for details
month
Total electricity consumption (Kwh)
Daily electricity usage (Kwh/day)
Total production
(T)
Single ton consumption
Kwh/T
Power difference (Kwh/T)
Saving ratio
%
Note
6
8091.50
299.69
183.29
44.14
14.70
33.31%
Before replacement
7
9042.50
301.42
195.94
46.15
16.71
36.21%
Before replacement
8 (first half month)
4446.10
317.58
65.60
67.78
38.34
56.56%
Before replacement
8 (second half month)
2846.90
189.79
96.71
29.44
After replacement
Table I
b. Use 1 day as the unit of measurement, and compare the output with the equivalent. See Table 2 for details.
No.
date
Capacity
(T)
Electricity usage (kwh)
Singleton consumption (Kwh/T)
Power difference (Kwh/T)
Saving ratio
%
Note
1
6-17
9.407
314.90
33.48
13.42
40.08%
Before replacement
8-24
9.331
187.20
20.06
After replacement
2
6-21
7.573
301.20
39.77
16.45
41.36%
Before replacement
8-25
7.615
177.60
23.32
After replacement
3
7-6
6.429
333.70
51.91
21.67
41.75%
Before replacement
8-27
6.423
194.20
30.24
After replacement
4
8-3
5.038
343.70
68.22
21.13
30.97%
Before replacement
8-19
4.967
233.90
47.09
After replacement
Table II
c. Analysis
Observe from the data in Table 1 that the power consumption per ton after the heating method of the ingot changes its heating mode is obviously less than the power consumption per ton before the heating mode is changed. The larger comparison values ​​are the first half of August and the second half of August. It can reach 38Kwh/T, but from the perspective of output, the output in the first half of August was low, and the inspection was mainly due to the inefficiency of the production of the products. Therefore, the first half of August did not participate in the comparison. The efficiency in June, July and the second half of August is relatively balanced, and the efficiency is equal to the previous efficiency. Therefore, it can be used as a subsequent reference value and the singleton power consumption is reduced by 14-16Kwh/T.
Table 2 uses 1 day as the unit of measurement, and adopts relative comparison of production yield. From the comparison, the higher the output, the smaller the difference in the consumption of single ton electricity. At 9T/day, the difference is 13Kwh/T. The greater the value of the difference in ton of electricity consumption, the difference is 21 Kwh/H at 5-6 T/day.
Comprehensive comparison of the values ​​in Tables 1 and 2 shows that the 1000T extruder is used to change the heating method for single-ton power consumption by 15Kwh/T.
4, input and recovery analysis
The input and recycling calculations are as shown in Table 3 below.
Renovation price (yuan)
Production (T/month)
Consume savings (Kwh/T)
Unit price (yuan/Kwh)
Recovery time (month)
18000.00
190.00
15.00
0.90
7.02
Table 3
5. Conclusion Based on the above, the following conclusions are drawn:
1. After the heating mode is changed, the power consumption per barrel of the ingot barrel can be saved by 15Kwh. 2. The rebuilding of a 1000T equipment can recover the transformation cost in 7 months.
3. It is recommended to change the heating method of Sheng barrel.
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