CN202403296U - Direct-fired biomass gasification furnace - Google Patents

Abstract

A direct-fired biomass gasification furnace, including a furnace body, a fan and an air regulating valve, a combustion chamber is arranged on the upper part of the furnace body, a gasification chamber is arranged on the lower part of the furnace body, and a co-combustor is arranged between the combustion chamber and the gasification chamber. The combustion chamber is connected to the combustion chamber through the accumulator nozzle of the co-combustor, and the co-combustor is provided with an air hole, and the air hole is connected to the air regulating valve through the secondary air inlet channel. The utility model sends the secondary air supply into the co-combustor above the gasification chamber, and concentrates the combustible gas at the gathering nozzle of the co-combustor for combustion, so that the combustion flame of the combustible gas is concentrated, the firepower is large, and the heat is concentrated It is easy to be absorbed and utilized by cooking utensils, and the heat utilization rate is high.

Description

A direct-fired biomass gasifier

technical field

The utility model relates to a domestic stove using solid fuels such as firewood and coal, in particular to a direct-fired biomass gasification furnace. the

Background technique

In the known technology, the tar generated during the working process of the biomass gasification furnace is easy to accumulate and block the gas delivery pipe and the furnace head. The combustible gas sent from the chamber is directly burned. For example, the patent document with the publication number CN201368484 discloses a new and improved firewood gasification return air furnace, which includes a furnace shell and a core body, and also includes a partition ring, which separates the annular space between the furnace shell and the core body. The cavity is divided into an upper annular air return chamber and a lower annular secondary air supply chamber. The core body is provided with a secondary air inlet hole, and the upper periphery of the core body is provided with a connecting ring seat with a first interface. , the inner ring opening of the separation ring is provided with a second interface matching the first interface. However, there are still two deficiencies in this technical solution. The first is that the flame produced by combustible gas combustion is wide, the firepower is scattered, and the heat utilization rate of the cooker is not high; The air chamber burns ahead of time, the flame produced is low, the outer flame cannot reach the bottom of the cooker, and the heat utilization rate is low. the

Contents of the invention

The utility model provides a direct-fired biomass gasification furnace, which can gather combustible gas at the bottom of a cooker for concentrated combustion, generate large firepower and high heat utilization rate. the

The technical solution adopted by the utility model is: a direct-fired biomass gasification furnace, including a furnace body, a fan and an air regulating valve, a combustion chamber is arranged on the upper part of the furnace body, a gasification chamber is arranged on the lower part of the furnace body, and the combustion chamber and the gasification A co-combustor is arranged between the chambers, and the gasification chamber is connected to the combustion chamber through the accumulator nozzle of the co-combustor, and an air hole is arranged on the co-combustor, and the air hole is connected to the air regulating valve through the secondary air inlet channel. the

After the airflow generated by the fan is distributed by the air regulating valve, part of it is sent into the gasification chamber through the main air duct, and the other part is sent into the co-combustor through the secondary air inlet channel; After mixing with the air of the secondary air intake, it is sprayed from the accumulator nozzle for concentrated combustion, and the flame produced is concentrated, and the outer flame can gather to the bottom of the cooker, with high firepower and high heat utilization rate; the secondary air intake is sent into the gasification In the co-combustor at the upper part of the chamber, it is difficult for the air sent in to flow back down to the gasification chamber, so the oxygen content in the gasification chamber is not easy to be excessive, and it is difficult for combustible gas to burn in advance in the gasification chamber, and most of it is pushed to the gathering burner Centralized combustion, the heat generated is easily absorbed by the cooker, and the heat utilization rate is high. the

The above-mentioned combustor includes a bottom plate and a shelf respectively nested under and on the upper part of the draft tube. A plurality of air holes are distributed in the middle of the draft tube. A hollow body with a small size and a large size. The bottom plate is closed and covers the upper port of the gasification chamber, so that the combustible gas in the gasification chamber can only flow upward from the guide pipe; the shelf is located at the bottom of the combustion chamber, and the air of the secondary air intake enters the guide through the air hole In the tube, it mixes with the combustible gas in the draft tube, and the formed mixed combustible gas flows upwards, enters the gathering burner nozzle and sprays out from the upper opening for concentrated combustion. the

The above-mentioned gasification chamber is provided with a feeding port communicating with the outside. It is convenient to add biomass fuel to the gasification chamber without interrupting the cooking, so as to improve the continuous working capacity of the gasification furnace. the

The tail gas from the above-mentioned combustion chamber is discharged into the waste heat chamber, and a warm water tank is arranged in the waste heat chamber. The tail gas discharged from the combustion chamber is introduced into the waste heat chamber, and the waste heat of the tail gas is used to heat the water in the warm water tank to meet the needs of life. the

The utility model sends the secondary air supply into the co-combustor above the gasification chamber, and concentrates the combustible gas to the combustor of the co-combustor for combustion, so that the combustion flame of the combustible gas is concentrated, the firepower is large, and the heat is concentrated It is easy to be absorbed and utilized by cooking utensils, and the heat utilization rate is high. the

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model. the

Fig. 2 is a schematic structural view of the co-combustor in the embodiment shown in Fig. 1 . the

Fig. 3 is a working diagram of the embodiment shown in Fig. 1 . the

Fig. 4 is a schematic structural view of another embodiment of the utility model. the

Detailed ways

Below, the embodiment of the utility model will be further described in conjunction with the accompanying drawings. the

Figure 1 shows an embodiment of a direct-fired biomass gasification furnace, including a furnace body 1, a fan 2 and an air regulating valve 3, a combustion chamber 11 is arranged on the upper part of the furnace body 1, and a gasification chamber 12 is arranged on the lower part of the furnace body 1 A co-combustor 4 is set between the combustion chamber 11 and the gasification chamber 12, and the gasification chamber 12 communicates with the combustion chamber 11 through the combustion nozzle 41 of the co-combustor 4, and an air hole 42 is set on the co-combustor 4, and the air hole 42 passes through The secondary air inlet channel is connected with the air regulating valve 3 . the

Fig. 2 shows a schematic view of the structure of the co-combustor in the embodiment of Fig. 1, including a bottom plate 44 and a shelf 45 respectively nested under and above the draft tube 43, and a plurality of air holes 42 are annularly distributed in the middle of the draft tube 43, Accumulation nozzle 41 is installed on the upper end of draft pipe 43, and accumulation nozzle 41 is a hollow body with both ends open and the upper part is smaller and the lower part is larger. the

Fig. 3 has shown the working diagram of the embodiment shown in Fig. 1, after the air that blower fan 2 produces flows through damper 3 and distributes, a part is sent into gasification chamber 12 from the bottom through main air channel 121, is gasification chamber 12 Combustion gasification of the fuel for air supply, the combustible gas produced flows upwards and enters the co-combustor 4; the air sent into the secondary air inlet channel enters the co-combustor 4 through the air hole 42, mixes with the combustible gas therein, and The upward flow is ejected from the burner nozzle 41 to focus the combustion. the

Fig. 4 shows another embodiment of a direct-fired biomass gasification furnace, including a furnace body 1, a fan 2 and an air regulating valve 3, a combustion chamber 11 is arranged on the upper part of the furnace body 1, and a gasification chamber 12 is arranged on the lower part of the furnace body 1 A co-combustor 4 is set between the combustion chamber 11 and the gasification chamber 12, and the gasification chamber 12 communicates with the combustion chamber 11 through the gathering nozzle 41 of the co-combustor 4, and the air hole 42 is set on the co-combustor 4, and the air hole 42 passes through The secondary air inlet channel is connected to the air regulating valve 3, and the gasification chamber 12 is provided with a feeding port 5 connected to the outside, which is convenient for adding fuel to the gasification chamber 12, and the tail gas of the combustion chamber 11 is discharged into the waste heat chamber 13, and the waste heat chamber 13 is provided with Warm water tank 6, warm water tank 6 can utilize the waste heat of tail gas to produce hot water. the

Claims (4)

1. direct-fired biomass gasification furnace; Comprise body of heater, blower fan and adjusting valve, upper of furnace body is provided with the combustion chamber, and the body of heater bottom is provided with vaporizer; It is characterized in that being provided with between combustion chamber and the vaporizer mixed burner; Vaporizer is communicated with the combustion chamber through the combustion mouth that gathers that mixes burner, mixes on the burner wind hole is set, and wind aperture secondary air road is communicated with adjusting valve.

2. a kind of direct-fired biomass gasification furnace as claimed in claim 1; It is characterized in that mixing burner and comprise base plate and the shelf that is nested in upper and lower of mozzle respectively; The a plurality of wind of mozzle middle part annular spread hole; The mozzle upper end is provided with gathers the combustion mouth, and gathering the combustion mouth is both ends open and up-small and down-big ducted body.

3. according to claim 1 or claim 2 a kind of direct-fired biomass gasification furnace is characterized in that vaporizer is provided with and is communicated with outside charge door.

4. according to claim 1 or claim 2 a kind of direct-fired biomass gasification furnace is characterized in that the tail gas of combustion chamber enters the waste heat chamber, the indoor reservoir that is provided with of waste heat.

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