CN201537453U - Clean combustion server for boiler - Google Patents

Abstract

The utility model relates to a clean combustion server for a boiler. A main body is of a tank body structure, wherein an atomizing chamber is arranged in the tank body, the upper part of the tank body is connected with a preheating pipeline, a preheating air channel pipe is sheathed outside the preheating pipeline, the outlet is connected with a secondary air pipeline of the boiler, a turbulence plate is installed in an air inlet on the lateral of the tank body, and an ultrasonic atomization transducer is installed at the bottom of the tank body and is connected with a liquid container by a pipeline. The clean combustion server for the boiler has the advantages of simple structure, stable running, good continuity and high reaction efficiency, and the processing ratio of high concentration gaseous substances can be more than 99 percent.

Description

Boiler clean burning servomechanism

Technical field: the utility model relates to a kind of boiler clean burning servomechanism.

Background technology: the discharging of sulfur dioxide has caused serious acid rain to pollute and ecological damage.China is a country that coal resources are very abundant, also is maximum in the world coal production state and country of consumption; The principal mode of coal utilization is direct burning, take more than 80% of coal total amount, a large amount of coal-fired a large amount of pollutants such as sulfur dioxide that produce, the discharge capacity of its sulfur dioxide ranks first in the world, produce for the national economy and the people and bring about great losses, also caused a large amount of losses of China's sulphur resource simultaneously.Therefore reduce and the control pollution, the discharging of sulphur was the needs of global sustainable development when control was coal-fired, and is particularly important and urgent to China, and most critical is to press for the development technique advanced person, economically feasible, the Prevention Technique that environment is suitable.Flue gas desulfurization technique is the measure that China the most effectively curbs environmental pollution at present.In recent years, along with the continuous enhancing and the environmental requirement of China's economic strength are gradually strict, particularly unprecedentedly strengthen in sulfur dioxide pollution control emission dynamics the Eleventh Five-Year Plan period, many thermal power plants' bases actual conditions separately, successively introduce external various flue gas desulfurization technique, and built up the demonstration unit that lime stone, gypsum wet, rotating spraying semidry method, in-furnace calcium spraying add technology such as afterbody humidification activation dry method, sea water desulfuration, electron beam desulfurization and flue gas circulating fluidized bed desulfurization.There are problems such as efficient is lower, operating cost height to some extent in these flue gas desulfurization techniques.This equipment is in the medium-scale boiler Demonstration Application stage at present, has obtained fine experiment effect; Its objective is the clean burning that will be widely used in various coal-burning boilers.

Summary of the invention: the purpose of this utility model provides a kind of simple in structure, and is stable, and continuity is good, and the reaction efficiency height can reach clean burning servomechanism more than 99% for high concentration gaseous substance handling rate.The purpose of this utility model realizes by following scheme: a kind of boiler clean burning servomechanism, main body is a tank structure, be the atomizing thorax in the tank body, tank body top connects preheating pipe, the outside suit preheating of preheating pipe wind channel tube, the air intake of tank body sidepiece is installed turbulence plate, and tank base is installed the ultrasonic atomizatio transducer, and the ultrasonic atomizatio transducer is connected with liquid phase container by pipeline.The utility model core is exactly liquid phase alkaline solution and surfactant can be regulated the cleaning agent of making to utilize ultrasonic transducer to become the aerosol situation.According to Langmuir Langmuir isothermal adsorpting equation: θ=KP _{S O2}/ (1+K P _SO2) the θ adsorption surface area that can provide for the cleaning agent solia particle wherein, K is the adsorption-desorption constant,

Be the concentration of gas phase acidic materials, absorption while, sulfur dioxide and cleaning agent generation chemical action.The material of equal quality, the more little surface area of particle diameter is big more.The solia particle that detergent liquid is atomized into after the vaporization of 1-10 μ m droplet moisture is just littler.Because the vaporization time of water is very short in the cleaning agent, in gas phase, be easy to generate random uniformly, porous solia particle, particulate not only specific area is very big, and adsorption activity is also very strong.The utility model gas, solid phase contact area are big, the reaction efficiency height, compare in the 7-5000 mu m range than present widely used rotation type atomization method particle diameter, the ultrasonic atomization particle diameter has improved the chemical kinetics characteristic of desulfurization, denitration and decarburizing reaction greatly in the 1-10 mu m range.Compare with other flue gas desulfurization fluidisation circulation fluidized bed technology, the utlity model has the advantage of following uniqueness:

1) reaction efficiency height;

2) energy-conservation;

3) be suitable for each solvent-borne type cleaning agent.

The utility model at existing various flue gas desulfurization techniques in actual applications restrictive condition and propose a kind of byer force in China's applicability, use high-efficiency cleaning burner widely.

Description of drawings: Fig. 1 is the utility model structure diagrammatic cross-sectional view

The specific embodiment:

The utility model as shown in Figure 1 is a kind of boiler clean burning servomechanism, main body is tank body 1 structure, be the atomizing thorax in the tank body 1, tank body 1 top connects preheating pipe 2, preheating pipe 2 outside suit preheating wind channel tubes 3, the air intake 9 of tank body 1 sidepiece is installed turbulence plate 4, and ultrasonic atomizatio transducer 5 is installed in tank body 1 bottom, and ultrasonic atomizatio transducer 5 is connected with liquid phase container 7 by pipeline 6.Circulates temperature controlled device 8 is installed on pipeline 6, and circulates temperature controlled device 8 forms the liquid phase in liquid phase container 7 and the ultrasonic atomizatio transducer 5 and circulates, and air intake 9 connects air blasts 10.

Ten ultrasonic transducers that the ultrasonic atomizatio transducer is produced for Yadu, Beijing, liquid phase container is the built-in desulfurizing agent of plastic cylinder, and the circulates temperature controlled device is that the liquid pump connects electric heater by pipeline, and electric heater has the constant temperature Automatic Control Component.

The utility model is by the air blast blow air, the particulate fluidisation of utilizing ultrasonic transducer in the 1-3MHZ frequency range liquid phase cleaning agent to be atomized into diameter 1-10 μ m carried through the hot blast sleeve preheating sneak into the boiler secondary air pipeline.Make it to enter at last the boiler combustion structure, the acid pollution gas that various burnings can be produced solidifies, and as desulfurization, denitration and decarburization etc., reaches the purpose of clean burning.

Cleaning agent is the alkaline matter preparation, and these alkaline matters and the sour gas generation chemical reaction that burning produces generate the compound of solid in boiler combustion process, thereby reach the purpose of clean burning.

Cleaning agent main component: sodium carbonate

Experiment place: China Harbin electricity generating corporation, Ltd of magnificent electric group

Experiment boiler: 1#220 ton/H pulverized-coal fired boiler

Experimental period: on April 17th, 2009

Coal-fired character: common raw coal

Draft type: force air inducing

Desulfurizer: HF-CSTL-SY00 type clean burning servomechanism.

Claims (2)

1. boiler clean burning servomechanism, it is characterized in that: main body is a tank structure, be the atomizing thorax in the tank body, tank body top connects preheating pipe, the outside suit preheating of preheating pipe wind channel tube, the air intake of tank body sidepiece is installed turbulence plate, and tank base is installed the ultrasonic atomizatio transducer, and the ultrasonic atomizatio transducer is connected with liquid phase container by pipeline.

2. a kind of boiler clean burning servomechanism according to claim 1 is characterized in that: liquid phase circulates temperature controlled device is installed on pipeline, and air intake connects air blast, and outlet connects the boiler secondary air pipeline.

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