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Adjustable oxygenation energy-saving combustion-supporting system

A combustion-supporting system and adjustable technology, applied in the transportation of non-flammable liquid/gas, combustion method, oxygen preparation, etc., can solve the problems of unclean filter element, low pressure, limited range, etc., and achieve increased product quality and environmental protection product quality , the effect of improving product quality

Inactive Publication Date: 2012-11-21
SHANGHAI SHENGLIANG ENERGY SAVING TECH DEV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This technology is theoretically feasible, but there are great shortcomings in its practical application in industrial production, and it cannot even achieve the goal of energy saving in a long-term and stable manner. Specifically:
[0003] 1. The maximum concentration of oxygen produced by the membrane method oxygen production equipment is 28%-30% (imported membranes are up to 35%). This oxygen concentration has limitations in the application of energy saving and combustion support, and the concentration cannot be adjusted according to the conditions of different industrial furnaces, so that Failure to meet optimal energy saving targets;
[0004] 2. In reality, the working conditions and environment of enterprises with high energy consumption using industrial furnaces are not good, and the ambient air quality is not good. However, the working principle of membrane oxygen production requires clean and smooth intake air, which must pass through the air filter element. The unclean air makes the filter element easy to plug. Usually, the membrane equipment will not produce 28%-30% oxygen after several months of use, so the sustainability of the energy saving effect will not exist;
[0005] 3. Oxygen-enriched air produced by membrane oxygen production method determines the low pressure of its oxygen-enriched gas due to the oxygen production method of the membrane method, which greatly limits its range of energy-saving applications in industrial furnaces and different fuels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Example 1: Application on 20T Coal Steam Chain Boiler

[0065] A 20T chain steam boiler, the steam working pressure requirement is 2.55MPA, the thermal efficiency is 80%, the fuel is coal with a calorific value of 5200-5300 kcal, and the daily coal consumption of the boiler is 76- 80 tons, the furnace temperature is 923°C, the blast frequency is 44HZ, the induced air frequency is 48.8HZ, the grate width is 3M, and the grate speed is 538r / min. The steam flow rate is 20T / H, the carbon content of the fly ash is 2.543, the fire in the front arch combustion area of ​​the grate is not good, the fire bed moves to the cinder area behind the fire bed, and there is black smoke from the chimney.

[0066]According to the above parameters, an adjustable oxygen-increasing, energy-saving and combustion-supporting system is adopted, and an air compressor with a pressure of 0.7MPA and a flow rate of 10M3 / MIN is selected. After the dryer, the compressed air enters the combined low dew p...

Embodiment 2

[0068] Embodiment 2: the application on the horseshoe flame kiln that fuel is natural gas

[0069] 18m 2 Two horseshoe flame furnaces form a group, the fuel is natural gas, and when air is used for combustion: the gas consumption of a single kiln is about 230-240m3 3 / h, the annual operating time is 8400 hours, the melting temperature is 1535°C, the temperature of the Dalong is 1535°C, the air preheating temperature is 1160°C, the exhaust gas temperature is 350°C, the excess air coefficient is 1.2, and the combustion air volume is 8900m3 / h , wind pressure 1226pa, 5.5KW, frequency conversion 24.5HZ, a single furnace is equipped with 4 spray guns, two as a group, and the design value of the natural gas flow rate of each spray gun is 150m 3 / h, switch once in about 20 minutes, the high-pressure air adopts 0.04MPA, the secondary air opening is 25HZ, the distance between the two furnaces is 10 meters, and a cumulative flow meter is installed for natural gas consumption, and the un...

Embodiment 3

[0072] Embodiment 3: Application on the rotary kiln where the fuel is heavy oil

[0073] The basic usage conditions of a rotary kiln for firing refractory materials are: the diameter of the rotary kiln is 2.5 meters, the length is 90 meters, the firing temperature of the kiln head is 1800 degrees, the pressure of the kiln head is 10-50pa, when the air is used for combustion, the oil is atomized Wind is compressed air: pressure 0.4Mpa, pipe diameter 10MM, high-pressure air is Roots blower: pressure 0.2Mpa, pipe diameter 60MM×2, flow rate 20m3 / min, blast is 15KW, air volume is about 6000M3 / H, for intermittent use , the oil pressure of heavy fuel oil is 0.4Mpa, the pipe diameter is 4.5MM, the current flame length is 12 meters, the daily output is 180-200 tons / day, the fuel consumption per ton is about 120KG / ton, the flue gas temperature is 250 degrees, and the secondary air temperature 600-750 degrees, one spray gun at the kiln head, and the diffusion angle is 120 degrees. The a...

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Abstract

The invention relates to an adjustable oxygenation energy-saving combustion-supporting system. The adjustable oxygenation energy-saving combustion-supporting system is characterized by comprising an air compression unit, an air purification unit, an oxygen-nitrogen separation unit, an oxygenation adjusting mixer unit and an oxygenation applying nozzle unit. The invention provides an adjustable oxygenation energy-saving combustion-supporting system to change the manner of combustion support of air and save the fuel through a stable system in lower cost under the condition that the yield and the quality of the product are unchanged and even improved; meanwhile, the requirements of environmental protection are better met. According to the primary condition of energy conservation measure, the furnace age, the operation habit and the management condition of the primary furnace, after the adjustable oxygenation energy-saving combustion-supporting system is adopted, the energy-saving effects of various industrial furnaces are as follows: 5%-20% for various fuel coal industrial furnaces, 6%-30% for various fuel oil industrial furnaces, and3%-18% for various fuel coal industrial furnaces.

Description

technical field [0001] The present invention relates to an energy-saving and combustion-supporting system for all industrial furnace combustion systems through fuel combustion, which is suitable for various fuels, including natural gas, liquefied gas, coal gas, coal, coal powder, coal water slurry, heavy oil, diesel oil, kerosene, Residual oil, tar powder, etc. Background technique [0002] At present, various industrial furnaces in our country rely on ordinary air for combustion support. There is only 20.93% oxygen in the air, which is used to participate in combustion support, while nitrogen, which accounts for 78.10% in the air, not only cannot participate in combustion, but also takes away a lot of heat energy during the combustion process. , so that the current combustion system has high energy consumption, low efficiency, a large proportion of fuel consumption per unit product, and serious environmental pollution. With the energy crisis, the rising cost of raw materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L7/00C01B13/02
CPCY02E20/34Y02P20/10
Inventor 李维云黄晓平
Owner SHANGHAI SHENGLIANG ENERGY SAVING TECH DEV
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