三星选煤厂降低用电成本的探索与实践
Exploration and practice of reducing electricity cost in Sanxing Coal Preparation Plant
吴瑞瑞1
作者信息
- 1. 山西焦煤能源集团股份有限公司 太原选煤厂,山西 太原 030023
- 折叠
摘要
选煤生产过程中大型设备使用较多,加强选煤厂用电管理对稳定电力输送、提高能源利用、降低洗选加工成本等均具有重要意义.针对三星选煤厂因用电单耗高、电费单价高等原因造成的电费成本较高的问题,在分析电费组成及电费影响因素的基础上,结合当前电力体制改革政策,通过提高生产效率、缩短生产故障停时、细化生产组织管理、避高峰组织生产、降低力调电费等措施,来降低三星选煤厂用电成本.改进措施实施后,三星选煤厂装机总功率由原来的 2 794 kW降低至 2 778 kW;原煤处理量由 280 t/h提高至 380 t/h;生产故障停时由每生产 100 h停 3 h缩短至 1 h;总的生产时间中"谷时段"生产的比例由 45%提高至 60%左右.通过改进,吨原煤用电成本由4.25元降低至2.79元,每年可为企业节约电费175.2万元,10个月可收回成本.
Abstract
The equipment used in coal preparation operations are mostly large ones.Strengthening power man-agement is,therefore,of vital importance for stabilizing power transmission,improving energy efficiency,and curtailing operating costs.The high cost of electricity incurred at Sanxing Coal Preparation Plant is attributed to the high unit consumption and high unit price of electricity.In order to tackle this problem,an analysis is made of the cost structure and the influencing factors causing the high cost of electricity.Based on result of analysis,and in line with the current national policy on reform of power system,a host of targeted measures is adopted by the plant.These include improvement of coal washing efficiency,reducing of time of shutdown caused by equip-ment failures,practice of fine management mode,arrangement of production to stagger the peak-load periods,and increase of power with reactive-load compensation equipment.Practice shows implementation of these measures has led to reduction of the total installed capacity of the plant to 2 778 kW from previously 2 794 kW;increase of raw coal treating capacity to 380 t/h from 280 t/h;cut of the time of shutdown caused by failure of equipment to one hour from 3 hours for every 100 hours of raw coal treated;rise of the share of the time period of coal washing operation at valley-load periods from 45%to around 60%of the total operating time;drop of power cost from 4.25 yuan to 2.79 yuan per ton of raw coal treated;and a save of electricity cost of 1.752 mil-lion yuan per year.The total input costs for implementing the above mentioned measures can be recouped in a period of 10 months.
关键词
用电管理/用电成本/力调电费/电度电费/装机总功率/故障停时/吨原煤用电成本Key words
electricity management/electricity cost/factor adjusted power prices/kilowatt-hour cost/total in-stalled capacity/time period of shutdown caused by fault/cost of electricity per ton of raw coal treated引用本文复制引用
出版年
2024
NETL
NSTL
万方数据