CN222593773U - Upper furnace structure of downdraft biomass gasification furnace - Google Patents

Abstract

The utility model discloses an upper furnace structure of a downdraft biomass gasification furnace, which comprises a furnace body, wherein an upper furnace is arranged on the furnace body, a cooling groove is formed in the upper furnace, a plurality of air guide parts which are arranged in a circumferential array are arranged in the cooling groove, notches are formed in the air guide parts, a frame is arranged in the notches, a shaft lever is arranged in the frame, a plurality of fan blades which are arranged in a linear circumferential array are rotatably arranged on the shaft lever, and the cooling groove is communicated with the upper furnace. According to the upper furnace structure of the downdraft biomass gasification furnace, reaction organisms are reacted through the furnace body, the organisms are heated through the upper furnace, the temperature of the upper furnace is reduced through the cooling groove in the upper furnace, wind is guided through the wind guide part in the cooling groove, the fixed frame is realized through the notch on the wind guide part, the shaft rod and the fan blade on the shaft rod are fixed through the frame, and the upper furnace is cooled.

Description

Upper furnace structure of downdraft biomass gasification furnace

Technical Field

The utility model relates to the technical field of downdraft biomass gasifiers, in particular to an upper furnace structure of a downdraft biomass gasifiers.

Background

Downdraft biomass gasifiers are an important device for converting biomass into combustible gas, and the structure of the downdraft biomass gasifiers plays a decisive role in gasification efficiency and gas quality. The downdraft gasifier is generally composed of a gas supply system, a material inlet and outlet system, a gasification reaction zone, a temperature control system and the like. The gasification reaction zone generally comprises a drying zone, a pyrolysis zone, an oxidation zone and a reduction zone, wherein the temperature of the oxidation zone is about 900-1200 ℃, which is a critical area for generating heat to support other reaction zones. The downdraft gasifier is characterized in that the air flow is the same as the moving direction of the materials, which is helpful to improve the cracking degree of tar, thereby reducing the tar content and improving the heat value and quality of the gas.

According to publication No. CN205046066U, publication No. 2016-02-24, the disclosed downdraft positive pressure biomass gasification furnace comprises a furnace body, a furnace barrel, an ash discharging device and an air inlet pipe, wherein the furnace body is tightly covered outside the furnace barrel, the top of the furnace barrel is provided with a feeding pipe, the upper part of the furnace barrel is sequentially provided with a closed water vapor chamber and a combustible gas chamber along the direction from top to bottom, the water vapor chamber is provided with a water inlet pipe and a water vapor pipe, the combustible gas chamber is provided with a combustible gas outlet pipe and a gas collecting pipe, the air inlet pipe extends into the furnace barrel, two positions of the inner surface of the furnace body, which are positioned in the middle part and the middle lower part of the furnace barrel, are respectively provided with an annular groove to form an annular closed space, the side wall of the furnace barrel is provided with an exhaust hole communicated with the annular closed space, and the two annular closed spaces are communicated with the combustible gas outlet pipe.

In the above patents and the prior art, it is known that the upper furnace structure of the gasification furnace heats the living beings, but the upper furnace needs to be controlled in temperature, and the gasification reaction can be ensured to reach the optimal state in different areas only by controlling the temperature to a proper temperature, thereby improving the gasification efficiency and the gas quality.

Disclosure of utility model

The utility model aims to provide an upper furnace structure of a downdraft biomass gasification furnace, which realizes the control of the temperature of the upper furnace, thereby realizing the improvement of the gasification efficiency.

In order to achieve the above purpose, the utility model provides the technical scheme that the upper furnace structure of the downdraft biomass gasification furnace comprises a furnace body, wherein the upper furnace is arranged on the upper furnace, a cooling groove is formed in the upper furnace, a plurality of air guide parts which are arranged in a circumferential array are arranged in the cooling groove, a notch is formed in the air guide part, a frame is arranged in the notch, a shaft lever is arranged in the frame, a plurality of fan blades which are arranged in a linear circumferential array are rotationally arranged on the shaft lever, and the cooling groove is communicated with the upper furnace.

Preferably, a plurality of baffles are arranged in a circumferential array in the cooling groove, and the air guide part is positioned on the side surface of the baffles.

Preferably, the furnace body is provided with a heating groove, and the heating groove is communicated with the cooling groove.

Preferably, the heating groove is provided with a plurality of heating wires which are arranged in a circumferential array.

Preferably, the furnace body is provided with a separation cavity.

In the technical scheme, the upper furnace structure of the downdraft biomass gasification furnace has the advantages that the biomass is reacted through the furnace body, the biomass is heated through the upper furnace, the temperature of the upper furnace is reduced through the cooling groove in the upper furnace, the wind is guided through the wind guide part in the cooling groove, the fixed frame is realized through the notch on the wind guide part, the fixed shaft rod and the fan blade on the shaft rod are realized through the frame, and the upper furnace is cooled.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of structures in a stirring tank and a feed inlet provided by an embodiment of the utility model.

Reference numerals illustrate:

1. 100 parts of furnace body, separation chamber, 11 parts of upper furnace, 13 parts of cooling groove, 14 parts of baffle, 15 parts of air guide part, 16 parts of notch, 17 parts of frame, 18 parts of shaft rod, 19 parts of fan blade, 20 parts of heating groove, 21 parts of heating wire.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1-2, an upper furnace structure of a downdraft biomass gasification furnace comprises a furnace body 1, wherein an upper furnace 11 is arranged on the upper furnace, a cooling groove 13 is formed in the upper furnace 11, a plurality of air guide parts 15 which are arranged in a circumferential array are arranged in the cooling groove 13, a notch 16 is formed in the air guide part 15, a frame 17 is arranged in the notch 16, a shaft lever 18 is arranged in the frame 17, a plurality of fan blades 19 which are arranged in a linear circumferential array are rotatably arranged on the shaft lever 18, and the cooling groove 13 is communicated with the upper furnace 11.

Specifically, when in use, a living being is put into the upper furnace 11 on the furnace body 1, then the upper furnace 11 is heated, then the shaft lever 18 on the air guide part 15 is opened, the fan blades 19 are driven to rotate, then the temperature of the upper furnace 11 is reduced, and hot air is transmitted to the outside through the air guide part 15 to cool the upper furnace 11.

In the scheme, the reaction organism is carried out through the furnace body 1, the organism is heated through the upper furnace 11, the temperature of the upper furnace 11 is cooled through the cooling groove 13 in the upper furnace 11, the wind is guided through the wind guide part 15 in the cooling groove 13, the fixed frame 17 is realized through the notch 16 on the wind guide part 15, the fixed shaft rod 18 and the fan blade 19 on the shaft rod 18 are realized through the frame 17, and the upper furnace 11 is cooled.

As an embodiment of the present invention, as shown in fig. 1 and 2, a plurality of baffles 14 arranged in a circumferential array are disposed in the cooling tank 13, and the air guiding portion 15 is located at a side surface of the baffles 14.

Specifically, the wind in the wind guiding portion 15 is blocked by the baffle plate 14 and is not mixed with the wind guiding portions 15 on the other baffle plates 14.

As an embodiment of the present invention, according to fig. 1 and 2, a heating tank 20 is provided on the furnace body 1, and the heating tank 20 is communicated with the cooling tank 13.

Further, the heating tank 20 is provided with a plurality of heating wires 21 arranged in a circumferential array.

Specifically, the heating wire 21 is activated to raise the temperature of the heating bath 20 by the heating wire 21 and raise the temperature of the upper furnace 11.

As a further embodiment of the present invention, according to fig. 1 and 2, a compartment 100 is provided on the furnace body 1.

Specifically, the compartment 100 prevents the temperature from disappearing too fast, and has a heat-insulating effect.

The working principle is that organisms are put into an upper furnace 11 on a furnace body 1, a heating wire 21 is started, the temperature of a heating groove 20 is increased by the heating wire 21, the upper furnace 11 is heated, then the upper furnace 11 is heated, a shaft rod 18 on an air guide part 15 is opened, fan blades 19 are driven to rotate, then the temperature of the upper furnace 11 is reduced, hot air is transmitted to the outside through the air guide part 15, and the upper furnace 11 is cooled.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims (5)

1. The utility model provides a downdraft biomass gasification stove's upper furnace structure, its characterized in that, including furnace body (1), be provided with upper furnace (11) on it, set up cooling groove (13) in upper furnace (11), be provided with a plurality of wind-guiding portions (15) that are circumference array arrangement in cooling groove (13), notch (16) have been seted up on wind-guiding portion (15), be provided with frame (17) in notch (16), be provided with axostylus axostyle (18) in frame (17), rotate on axostylus axostyle (18) and be provided with a plurality of flabellum (19) that are line circumference and arrange, cooling groove (13) with upper furnace (11) are linked together.

2. The upper furnace structure of the downdraft biomass gasifier according to claim 1, wherein a plurality of baffles (14) are arranged in a circumferential array in the cooling tank (13), and the air guide part (15) is located at the side surface of the baffles (14).

3. The upper furnace structure of the downdraft biomass gasification furnace according to claim 2, wherein a heating groove (20) is formed in the furnace body (1), and the heating groove (20) is communicated with the cooling groove (13).

4. A downdraft biomass gasifier upper furnace structure according to claim 3, wherein a plurality of heating wires (21) are arranged in a circumferential array on the heating tank (20).

5. The upper furnace structure of the downdraft biomass gasifier according to claim 1, wherein the furnace body (1) is provided with a separation chamber (100).