CN201159472Y - Energy saving and emission reduction chain boiler equipment - Google Patents

Abstract

The utility model relates to the boiler and other combustion equipment field and particularly belongs to a novel energy-saving and emission reduction boiler combustion equipment. The utility model provides an energy-saving and emission reduction chain-type boiler equipment which comprises a furnace; the equipment is characterized in that multi-functional refractory bricks with ventilation holes are laid on the internal side wall of the furnace; a function wind chamber is arranged below the multi-functional refractory bricks; the top end of the function wind chamber is communicated with the ventilation holes of the multi-functional refractory bricks, while the other end of the function wind chamber is connected with a blower. The equipment has the advantages that the equipment enables the fuel to be efficiently combusted and can significantly improve the utilization rate of coal and the thermal efficiency of the boiler to save fuel and reduce the emission of pollutants, thereby protecting the environment.

Description

Energy saving and emission reduction chain boiler equipment

technical field

The utility model relates to the field of combustion equipment such as boilers, and in particular belongs to a novel energy-saving and emission-reducing boiler combustion equipment.

Background technique

Although the traditional chain boiler has many advantages such as simple structure, material saving, easy operation, safety and reliability, etc., due to insurmountable defects in its own structure, the fuel combustion of the chain boiler is insufficient and incomplete. As a result, the thermal efficiency of this type of boiler is low, and a large amount of combustibles are discharged without burning, which not only wastes precious fossil energy, but also causes serious pollution to the atmosphere and the environment.

Contents of the invention

In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a chain boiler equipment with a new energy-saving and emission-reduction design, which can make the fuel burn efficiently, significantly improve the utilization rate of coal combustion and the thermal efficiency of boiler operation, and save energy. While reducing the emission of pollutants, it is beneficial to environmental protection.

In order to achieve the purpose of the above invention, the technical solution adopted by the utility model is: an energy-saving and emission-reducing chain boiler equipment, which includes a furnace, which is characterized in that multifunctional refractory bricks with ventilation channels are built on the side walls inside the furnace , the lower part of the multifunctional refractory brick is provided with a functional air chamber, the top of the functional air chamber communicates with the ventilation channel of the multifunctional refractory brick, and the other end is connected with the blower through a functional air pipe.

The ventilation channels of the multi-functional refractory bricks are divided into horizontal channels and vertical channels that communicate with each other.

The multifunctional refractory brick is composed of refractory cement, refractory aggregate and solid combustion accelerant.

The multifunctional refractory bricks are built on the two side walls between the front arch and the rear arch inside the furnace.

The functional air duct is divided into a functional cold air duct and a functional hot air duct. One end of the functional cold air duct is connected to a blower, and the other end is connected to a functional air preheater arranged outside the furnace. The preheater communicates with the functional air chamber.

Both sides outside the furnace are provided with functional air ducts and regulating valves.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. The utility model is to renovate the furnace part of the original chain boiler without changing the pressure components of the original chain boiler, so the structure is simple, the remodeling is convenient, and the cost is low.

2. A brand-new combustion environment and dynamic conditions are formed in the furnace after adopting the technical scheme of the utility model. Under the influence of the new environmental conditions, the combustion of coal undergoes the following changes: the heat radiation of the furnace wall lining is strengthened, and the combustion is promoted. The new coal is ignited, the furnace temperature is increased, and the reaction speed of the coal is accelerated; the secondary combustion of the combustibles is completed through the adsorption and respiration of the multi-functional refractory bricks; The flow form of the main air flow of the wind has changed from straight flow to turbulent flow, which prolongs the residence time of combustibles in the furnace and creates the conditions for combustibles to burn out; the blowing of functional wind supplements the oxygen-deficient main combustion zone with hot oxygen, The anoxic state of the main combustion area is improved; due to the existence of certain chemical substances in the multifunctional refractory bricks, the activity of the combustion factors produced during the combustion of coal is intensified, forming intense and efficient combustion. Through the simultaneous effects of the above aspects, the conditions for efficient combustion and burnout of the chain boiler are created, so that the coal can be fully and completely burned, thereby achieving the effect of saving coal and reducing emissions. It strengthens the thermal radiation, increases the furnace temperature, makes the combustion reaction of coal violent, realizes high-efficiency combustion, clean combustion, reduces coal consumption and slag discharge, and no longer emits black smoke from the chimney.

Description of drawings

Figure 1 is a schematic structural diagram of an energy-saving and emission-reducing chain boiler;

FIG. 2 is a schematic diagram of the cross-sectional structure along the line AA' of FIG. 1 .

1-functional air chamber, 2-primary air chamber, 3-fire grate, 4-coal feeding hopper, 5-front arch, 6-upper drum, 7-multifunctional refractory brick, 8-rear arch, 9-functional wind Preheater, 10-functional hot air duct, 11-functional cold air duct, 12-fan, 13-lower drum, 14-furnace.

Detailed ways

The present invention will be further described in detail below through specific examples and in conjunction with the accompanying drawings. The following embodiments are only used to illustrate rather than limit the present invention.

As shown in Figure 1, it is a schematic structural view of the utility model, in which we can see the main structure of the utility model and the installation position and functional wind configuration of the multifunctional refractory brick. The chain boiler equipment is composed of a grate 3, a drum and a furnace 14, the furnace 14 is respectively provided with a front arch 5 and a rear arch 8, and the drum is divided into an upper drum 6 and a lower drum 13. There is a coal feeding hopper 4 at the top, and a primary air chamber 2 is provided under the fire grate 3 as the main air chamber, and air enters the furnace from below to supply oxygen to the fuel. A multifunctional refractory brick 7 is built on the side wall of the furnace. The multifunctional refractory brick has a plurality of channel outlets on its surface, and there are horizontally and vertically interconnected channels inside. It is prefabricated by refractory cement, refractory aggregate and solid combustion aid. It has the characteristics of high refractoriness (1450°C) and high compressive strength (40Mpa). It is built on the inner wall of the furnace according to different furnace types. superior. A functional air chamber 1 is provided below the multifunctional refractory brick, and the functional air chamber 1 communicates with the functional air preheater 9 through the functional hot air duct 10, and the other end of the functional air preheater 9 communicates with the fan 12 through the functional cold air duct 11. connected.

As shown in Figure 2, it is the AA' section view of Figure 1, the multifunctional refractory brick 7 is built on the side wall of the furnace 14, and the functional wind chamber 1 is located under the multifunctional refractory brick 7, and the multifunctional refractory brick 7 The channel outlets on the lower surface communicate with each other.

The functional air blows into the functional air preheater 9 from the fan 12 through the cold air duct 11, and after preheating, it is respectively introduced into the functional air chamber 1 from both sides of the boiler chamber, and enters the multifunctional refractory brick 7 from the functional air chamber 1. Driven by the wind, the numerous pores in the multifunctional refractory brick 7 form a respiration effect, the lower row of holes sucks in, and the upper row of holes exhales. In this way, multiple small burners are formed in the high temperature multifunctional refractory brick 7 , Incompletely combusted fuel particles and combustible gas are sucked into the hole for secondary combustion.

The refractory temperature of the multifunctional refractory brick 7 is higher than that of the original ordinary refractory brick or concrete. In the furnace 14, the front arch and the two side walls lined with multifunctional refractory bricks form strong heat radiation on three sides, so that the new coal entering the furnace from the coal hopper quickly reaches the ignition point and burns, laying a good foundation for the efficient combustion of coal. The horizontal functional wind is blown into the furnace 14 along the direction perpendicular to the main air flow of the primary air, so that the flow mode of the main air flow of the primary air changes from straight flow to turbulent flow, thus prolonging the residence time of fuel in the furnace and providing conditions for complete combustion . The functional air is preheated by the preheater and blown into the furnace through the many holes of the functional bricks. It contains a large amount of fresh oxygen, which greatly improves the condition of the main combustion to eliminate the lack of oxygen, and creates the necessary conditions for the combustion of coal. After the functional wind is heated, the oxygen has a higher combustion-supporting activity due to the thermo-oxygen effect, which makes the combustion reaction of coal burning more intense.

Combining the above functional effects, after the installation of functional bricks and functional air in the furnace, new coal can be ignited quickly, the temperature of the furnace is high, the combustibles stay in the furnace for a long time, and sufficient combustion-supporting oxygen is added in the furnace. These provide the necessary conditions for the efficient combustion of coal. At the same time, conditions for secondary combustion are created for unburned combustibles. In this way, the coal can be fully and completely burned in the boiler, thereby improving the utilization rate of coal and improving the thermal efficiency of the boiler. And because the combustible substances are fully burned inside the furnace, there are no carbon black particles in the flue gas, and the chimney no longer emits black smoke when it is discharged, reducing the pollution to the atmosphere.

Claims (6)

1. An energy-saving and emission-reducing chain boiler equipment, which includes a furnace, characterized in that, the side wall inside the furnace is built with multi-functional refractory bricks with ventilation channels, and the lower part of the multi-functional refractory bricks is equipped with a function The air chamber, the top of the functional air chamber communicates with the ventilation channel of the multifunctional refractory brick, and the other end is connected with the blower through a functional air pipe. 2. The energy-saving and emission-reducing chain boiler equipment according to claim 1, characterized in that the ventilation channels of the multifunctional refractory bricks are divided into horizontal channels and vertical channels that communicate with each other. 3. The energy-saving and emission-reducing chain boiler equipment according to claim 1, characterized in that the multi-functional refractory bricks are built on the two side walls between the front arch and the rear arch inside the furnace. 4. The chain boiler equipment for energy saving and emission reduction according to claim 1, characterized in that the multifunctional refractory brick is composed of refractory cement, refractory aggregate and solid combustion aid. 5. The energy-saving and emission-reducing chain boiler equipment according to claim 1, 2, 3 or 4, wherein the functional air duct is divided into a functional cold air duct and a functional hot air duct, and one end of the functional cold air duct It is connected with the blower, and the other end is connected with the functional air preheater arranged outside the furnace, and the functional hot air pipe communicates the functional air preheater with the functional air chamber. 6. The chain boiler equipment for energy saving and emission reduction according to claim 5, characterized in that functional air ducts and regulating valves are provided on both sides outside the furnace.

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