What coal is used for drying towers? ——Analysis of popular topics and comparison of data
Recently, with the growth of demand for industrial drying equipment, "what coal is used for drying towers" has become a hot topic in the industry. This article combines the hot topics of the entire network for the past 10 days, conducts structured analysis from the aspects of coal type selection, calorific value comparison, environmental protection indicators, etc., and provides practical suggestions.
1. Core requirements for coal for drying towers
As an industrial drying equipment, the key requirements for fuel coal include:
| index | Suggested scope | importance |
|---|---|---|
| Hot value | ≥5000 calories/kg | Impacts drying efficiency |
| Volatile parts | 25%-35% | Combustion stability |
| Sulfur | ＜1% | Environmental protection meets standards |
| Gray | ＜15% | Reduce the risk of slag |
2. Comparison of performance of mainstream coal types
According to recent market research data, the common coal types used in drying towers are as follows:
| Coal species | Catalyst value (large kcal/kg) | Volatile fraction (%) | Sulfur (%) | Market price (yuan/ton) |
|---|---|---|---|---|
| Shanxi anthracite | 5800-6500 | 8-12 | 0.5-0.8 | 1200-1400 |
| Inner Mongolia lignite | 3500-4200 | 40-50 | 0.3-0.6 | 600-800 |
| Shaanxi Tobacco Coal | 5000-5500 | 28-35 | 0.8-1.2 | 900-1100 |
| Imported thermal coal | 5500-6000 | 25-30 | 0.5-1.0 | 1100-1300 |
3. Analysis of hot trends in 2024
1.Impact of environmental policies: Many places have issued new regulations requiring sulfur emissions from drying equipment ≤100mg/m³, and the demand for low-sulfur coal increased by 30%.
2.Cost optimization solution: Some enterprises adopt the "high-quality coal + biomass" mixed combustion model, and the fuel cost is reduced by 15-20%.
3.Technology upgrade: New high-efficiency coal pulverized burner can increase the thermal efficiency of low-calorie coal (such as lignite) to more than 85%.
4. Practical suggestions for coal preparation
1.Priority for ballast coal: Equilibrium calorific value and volatile content, Shaanxi bituminous coal has the highest comprehensive cost-effectiveness
2.Pay attention to regional differences: Northern enterprises may consider Inner Mongolia lignite combined with preheating system, while southern enterprises recommend using imported coal from sea
3.Must-check indicators: Suppliers should be required to provide recent coal quality inspection reports during procurement, focusing on checking all sulfur and ash melting point data
5. Industry experts' opinions
Li Ming, an expert from the China Coal Industry Association, pointed out: "In the next two years, coal used in drying towers will develop in the direction of high calorie value and low pollution. It is recommended that enterprises establish fuel databases to achieve dynamic optimization of coal distribution."
Conclusion
When choosing coal for drying towers, thermal efficiency, environmental protection requirements and operating costs must be considered comprehensively. It is recommended that enterprises regularly evaluate fuel plans and follow up on new technologies and policy changes in a timely manner to achieve a win-win situation between economic and environmental benefits.
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