Shandong Huaning Electric Heating Technology Co., Ltd.
Economic advantages of electric heating and thermal insulation of pipelines in agglomeration thermal power plants compared to steam heating
On the example of the thermal insulation of steam-water pipes of a boiler on a site with an area of 2000 m of a steel agglomerate with cold waste thermal power plants, an economic analysis of electric heating and steam heating was carried out.
Sep 28,2022
For a long time, the main way to preserve heat was steam heating. It dissipates heat through a steam heating pipe, compensating for the heat loss in the insulated pipe. However, the steam heat sink is not easy to control, and the heat preservation efficiency of the device is at a low level. Pipelines that need electric heating are complex in power plants, and steam heating pipelines are inconvenient. In the steam heating pipeline, the phenomenon of “running, cotton, dripping and leaking” often occurs. Each part of the winter maintenance must spend a lot of effort and material resources on the pipeline to ensure the safe operation of the power plant in winter.
The principle and application of self-limiting temperature electric heating
The self-limiting temperature electric heating solution is mainly supplemented by self-limiting temperature electric heating cable. The self-regulating heating cable is a ribbon heating cable made of high polymer wire composite material with a positive temperature resistivity coefficient.
Self-limiting temperature electric heating tape consists of conductive plastic, 2 parallel tires, an insulation layer, a metal shielding mesh, and an anti-corrosion table coating. The conductive plastic treated with plastic and conductive carbon particles is a heating core. The whole temperature control process of the electric heating cable is automatically adjusted by the material itself, and the control temperature will not be too high or too low.
Electric heating has the following advantages:
1. The device is simple, the heating is uniform, the control is accurate, the remote control is possible. 2. explosion-proof, all-weather, high reliability and long service life. 3. No leakage, good for environmental protection. 4. saving steel: no heating pipeline. 5. Saving insulating materials. 6. Save hot water, no need for user privacy. 7. It can realize electric heating when steam is not possible. 8. The volume of work is small, the construction is convenient, and the maintenance is small. 9. high efficiency and low power consumption.
Economic comparison
On the example of the thermal insulation of steam water pipes of a boiler in a 2000 m area of a steel agglomerate with cold waste thermal power plants, an economic analysis of electric heating and steam heating was carried out.
investment comparison
Electric heating pipe: steel pipe DN20, length 2000 m, total weight 3.32 t. The estimated cost of the steam tracking program is 183,000 yuan. Complaints related to the use of imported electric heating solutions are estimated at 349,000 yuan. The investment estimate for the electric heating solution provided by Huaning is 163,000 yuan.Total investment ratio of three schemes:
Steam heating: Imported electric heating: household electric heating = 1:1,9:0,89
Operating cost comparison
Steam heating: Steam consumption cost + heating pipe maintenance cost is 89,600 yuan.Electric heating cable with self-limiting temperature is used in electric heating, and the annual energy consumption and maintenance costs are 33,700 yuan. Operating cost ratio of the two schemes
Steam heating: electric heating = 2.65: 1
Economic benefit
The investment in the steam heating scheme is 52.5% of the imported electric heating scheme, And investments in the steam heating scheme account for 112% of the domestic heating scheme, but the operating cost of the steam heating system is 265%. From electric heating. All three schemes can meet the insulation and antifreeze requirements of pipelines. Therefore, by analyzing the annual cost of comparing the three schemes, the annual cost of heating steam heating is: 10.7 yuan, and the annual cost of imported electric heating is 62,800. Our Huanang annual fee is 47,300 yuan.Through analysis, we can learn that using our self-regulating electric heating cable requires less investment, low operating costs and significant economic impact.
PREVIOUS:
Related Posts
Electrical heating installation precautions
Electric heating cable is a heating method that uses insulation resistance or resistance heating wire to create a temperature after power supply. It can automatically adjust the output temperature and reasonably maintain the process temperature requirements to keep warm, raise the temperature and protect the heating equipment from freezing. The insulation and antifreeze effect of the container is very good.
Which electric heating should be chosen for the main pipeline transport of heavy oil
Transport of heavy oil through the pipeline over long distances and long-term retention in the pipeline will result in a drop in temperature due to heat dissipation and increased viscosity, which will cause the pipeline to be blocked by freezing or condensation-related accidents. Electric heating is widely used as effective insulation of pipelines and anti-freeze protection.
Which electric heating cable should be considered for a 4 km pipeline
According to the statistics of the Hydrometeorological Center, the average daily minimum temperature at the location of the CNPC tank farm is 5 ° C, and the average daily maximum temperature is 14 ° C. Since the freezing point of the PX is about 15 °C, the supply pipeline needs heat preservation and heating. The oil depot has been in operation for many years without a stable source of steam, therefore, this project is considering the use of electric heating technology.
Application of outdoor electric heating cable in oil main pipelines with high paraffin content
Long-distance crude oil pipelines with a high paraffin content with freezing temperatures above 50 °C. According to the requirements of the production plan of the plant, the volume of oil transportation through the pipeline is 150 thousand rubles. Tons per year, maximum-200 thousand. Tons per year.. According to the thermodynamic analysis of the pipeline, the initial supply temperature of the pipeline is 80 ° C (TN), and the temperature of the end entering the tank is 60 ° C (Tu). Since the transportation temperature needs to be adjusted according to the time of year, it sometimes needs to be transported by heat.
What heating product to choose for main infusion pipelines
In petrochemical engineering, trunk infusion pipelines are the lifeblood of the factories. The temperature in the northern region is too low in winter and the pipeline needs to be insulated to compensate for the heat loss due to the low temperature in winter to ensure the normal operation of the pipeline.
The role of leather tracer cables in the insulation of asphalt main pipelines
The toughness of the asphalt is greatly affected by the temperature. When the temperature decreases, the toughness of the asphalt increases, and the drop in resistance of the asphalt during pipeline transportation increases; when the temperature falls below the freezing point, the asphalt solidifies, causing the pipeline to clog and the conveyor belt to come to trouble. Therefore, electric heating and heat preservation during the transportation of asphalt are very important.
Need help to find the right solution with our experts?
WhatApp:
E-mail:
Address:
Xinxing Street, Industrial Park, Shanghe County, Jinan City, Shandong Province
✪ Huaning Electric Heat Tracing provides you with professional solutions
