EFFECTS OF SUB-BITUMINOUS COAL ON BOILER PERFORMANCE

Details


  • Production capacity: 35-75 t/h
  • Work pressure: 1.25-5.3 MPA
  • Applicable fuel: Bituminous coal, anthracite, meagre coal, lignite, gangue, waste, sludge
  • Applicable industry: Chemical, food, tobacco, textile, printing and dyeing, feed, medicine, building material, wine, rubber, hospital


Product introduction

  As a new mature high-efficiency and low-pollution clean coal technology, circulating fluidized bed combustion (CFBC) technology has many advantages that other combustion methods do not have. Circulating fluidized bed combustion is low-temperature combustion, so the NOx emission is much lower than that of pulverized coal furnace, only 200ppm. CFBC can desulfurize directly during the combustion process, and the desulfurization efficiency is high. The technology and equipment are simple and economic, and the costs of its initial investment and operation are much lower than those of dry pulverized coal furnace and flue gas desulfurization (PC+FCD). The discharged ash residue has good activity and is easy to be comprehensive utilized without secondary ash residue pollution. The load adjustment range is large, and the low load can be reduced to about 30% of the full load.


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High temperature cyclone separator
  • High efficiency, wear resistance, separation efficiency ≥ 98%, effectively improve the combustion efficiency of the boiler thermal efficiency.

Large furnace design
  • Large furnace, low velocity design; the application of wearproof tube technology, reducing erosive abrasion.

  • Extend the residence time of coal particles in the furnace so that the coal can be fully burned.

Bell jar type hood
  • Adopt bell type hood to distribute air averagely and avoid fuel reverse to wind chamber.

Low bed pressure operation
  • By particle optimization, the operating bed pressure can be decreased to 3500Pa, which effectively saves operating costs and greatly reduces the oxynitride generated.

Model Rated Thermal Power t/h Working Pressure MPA Rated Output Water Temperature ℃ Thermal Efficiency %
DHX35-1.25-AⅠ 35 1.25 194 89
DHX50-1.25-AⅠ 50 1.25 194 89
DHX75-1.25-AⅠ 75 1.25 194 89
ZZ-35/3.82-AⅠ 35 3.82 450 89
ZZ-50/3.82-AⅠ 50 3.82 450 89
ZZ-65/3.82-AⅠ 65 3.82 450 91
ZZ-75/3.82-AⅠ 75 3.82 450 91
ZZ-75/5.3-AⅠ 75 5.3 485 91

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Efficiency and Boiler Parameters Effects in Sub-critical The boiler is more efficient if coal content has high CV. From the regression line, the efficiency of the boiler can be predicted when firing sub-bituminous coal. Therefore, the different types of sub-bituminous coal give the different performance to the boiler system. Coal with high calorific value CV will reduce the firing rate in the furnace.(PDF) Efficiency+and+Boiler+Parameters+Effects+in+Sub Efficiency+and+Boiler+Parameters+Effects+in+Sub-critical+Boiler+with+Different+Types+of+Sub-bituminous+Coal September 2018 Iranian Journal of Science and Technology: Transactions of Mechanical

Firing a sub-bituminous coal in pulverized coal boilers Firing Adaro, a sub-bituminous coal mined in Indonesia, can be a solution for emissions compliance because of its low sulfur, nitrogen and ash content and high volatile matter content, as can be seen in Table 1 where Adaro coal properties are summarized. Adaro coal has low sulfur content (0.1%) compared to typical bituminous coals, which can eliminate installation of expensive desulphurization

Efficiency and Boiler Parameters Effects in Sub-critical TECHNICAL NOTE Efficiency and Boiler Parameters Effects in Sub-critical Boiler with Different Types of Sub-bituminous Coal A. A. Nuraini1 • S. Salmi1 • H. A. Aziz1 Received: 14 August 2016 (PDF) Efficiency and Boiler Parameters Effects in Sub PDF | It has been a practice for almost all countries to run coal-fired power plant as a base load supplying the electricity. Coal is selected as main | Find, read and cite all the research you The Effects of Coal Quality and Fuel - Babcock Powerevaluating, due to the trends and costs of coals, converting the unit to fire sub-bituminous PRB coal. The utility boiler was designed to produce 615,000 pph of steam for electric power generation with a superheated steam outlet at 1,625 psig and 1,005F. The unit was designed to burn a bituminous coal(PDF) Effect of Coal with High Moisture Content on Boiler From this study, the results indicate that coal with different calorific value (CV) and properties gives different efficiency to the boiler. The results show that the sub-bituminous coal with CV

Impact of Blended Coal Firing on the Power Plant PerformanceWhen sub-bituminous coal and high sulphur bituminous coal are blended, the blend observed to (Clinker formation in the boiler) Studies on blending sub bituminous coals with addressed for its effect on plant performance Coal blending is an excellent, efficiency enhancing,The Role of Coal Characteristics in Boiler OperationIn short, lower Btu coal will increase the pounds of coal to be handled and when the variations are large enough we can expect a reduction in boiler capacity. Higher Btu coal seldom gives any pro- blems in boiler operation or performance. See Figure 1 for typical heating values of various coals found in the United States.