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Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler

A circulating fluidized bed and desulfurization agent technology, which is applied in the field of desulfurization agents, can solve the problems of affecting the boiler and failing to reach the allowable upper limit of the concentration, and achieve the effect of low processing cost and low desulfurization cost

Inactive Publication Date: 2012-03-14
郭仕民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because limestone is heated and decomposed to absorb heat in the furnace, it affects the combustion thermal efficiency of the boiler to varying degrees, and the sulfur fixation rate is only 40-60%, which is far below the environmental protection department's requirements for SO 2 The requirement to limit the allowable upper limit of the emission concentration, therefore, what needs to be solved urgently in China is to find a desulfurizer for sulfur fixation in circulating fluidized bed boilers that burn coal or low-quality coal, so as to achieve the purpose of efficient sulfur fixation

Method used

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  • Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler
  • Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler
  • Fire coal or inferior coal desulfurizer for sulfur fixation in circulating fluidized bed boiler

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Experimental program
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Effect test

Embodiment 1

[0025] Add 48 tons of desulfurizer 1# to 120 tons of high-sulfur coal, mix well and set aside;

[0026] Add 48 tons of desulfurizer 1# to 120 tons of low-sulfur coal, mix well and set aside;

[0027] The high- and low-sulfur coals mixed with the desulfurizer prepared by the present invention are transported to the furnace front warehouse successively through the transportation system of the original fuel, put into the furnace for combustion, and run for 24 hours each. Boiler thermal test and SO 2 Monitoring is performed simultaneously. Thermal testing is done by the Coal Energy Conservation Service Center, SO 2 It is used by the Shandong Provincial Environmental Monitoring Center according to GB / T 16157-1996 "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Methods for Gaseous Pollutants" and HJ / T 57-2000 "Potential Electrolysis Method for Determination of Sulfur Dioxide in Exhaust from Stationary Pollution Sources" Instrument KM...

Embodiment 2

[0037] The power plant has three 35t / h circulating fluidized bed boilers with an annual power generation of 90 million kWh, each boiler consumes 5.20t / h of fuel per hour, and the annual fuel consumption of the three boilers is 105,000 tons.

[0038]The industrial analysis of coal combustion is shown in Table 1. Low-sulfur coal, in which total sulfur is 0.49%, boiler SO 2 Emission concentration is 1000mg / m 3 , the emission is 42.9kg / h.

[0039] Add 24 tons of desulfurizer 2# to 120 tons of low-sulfur coal, mix well, and then enter the original fuel transportation system to transport to the furnace front warehouse, burn in the furnace, and run for 24 hours. Boiler thermal test and SO 2 Monitoring is performed simultaneously. Thermal testing is done by the Coal Energy Conservation Service Center, SO 2 According to GB / T16157-1996 "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Method of Gaseous Pollutants" and HJ / T57-2000 "Potenti...

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Abstract

The invention discloses a fire coal or inferior coal desulfurizer for sulfur fixation in a circulating fluidized bed boiler. The desulfurizer provided by the invention is made from siliceous marlite with its granularity being less than 4mm and a zeolite powder with its granularity being less than 0.1mm; 100g of the desulfurizer contains 98-99g of siliceous marlite. The desulfurizer is uniformly blended in fire coal or inferior coal and 15-40g of the desulfurizer is added into 100g of fire coal or inferior coal. With the addition of the desulfurizer in fire coal or inferior coal, 80-99.6% of sulfur content can be removed from fire coal or inferior coal.

Description

technical field [0001] The invention relates to a desulfurizing agent, more particularly, a desulfurizing agent suitable for fixing sulfur in a circulating fluidized bed boiler for burning coal or low-quality coal. Background technique [0002] Coal is the main energy source in my country, and a large amount of sulfur dioxide (SO 2 ), causing serious pollution to the environment and serious harm to human and biological survival. In recent years, with the rapid development of my country's economy, coal consumption has surged at a rate of 200 million tons per year, resulting in the national SO 2 Emissions have risen sharply, and acid rain has increased in some areas. In my country's coal consumption, coal for thermal power generation and heating accounts for more than 60% of the country's total coal, and among coal-fired boilers for power generation and heating, circulating fluidized bed boilers account for more than 40% of all coal-fired boilers , especially the coal-fired ...

Claims

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Application Information

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IPC IPC(8): C10L9/10
Inventor 郭仕民
Owner 郭仕民
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