CN201014511Y - Household Biomass Gasifier - Google Patents

Abstract

The utility model relates to a household type biomass gasification furnace which utilizes biomass such as crop stalks to prepare clean gas, comprising a furnace body, a furnace liner, a feed port, a gas outlet, and a heating water jacket. The water jacket is connected with a steam Preheating ring, there are multiple steam nozzles on the inner wall of the furnace, and the steam nozzles are connected to the steam superheating ring through the steam pipe, and the inner layer of the lower furnace is equipped with an air preheating ring, and the section inside the furnace is provided with a "mountain" Shaped air nozzle, the air nozzle is composed of the main air nozzle and multiple side air nozzles around the main air nozzle, the top of the air nozzle is closed, and multiple air outlet holes are set on the side wall. The air inlet of the device is connected. The utility model has high heat transfer gasification efficiency, less tar in the generated gas, stable quality, simple structure, and is convenient and practical.

Description

Household Biomass Gasifier

Technical field:

The utility model relates to a household type biomass gasification furnace which uses biomass such as crop stalks to prepare clean gas.

Background technique:

The existing traditional rural household firewood stoves all use the direct combustion of biomass. The combustion of biomass is incomplete, the oily smoke is large, it is difficult to ignite, and the utilization rate of heat energy is low. However, the vast rural areas are rich in crop straw resources, and the use of crop straw and other biomass It is of great significance to prepare clean gas from substances. The currently designed biomass gasifier has the disadvantages of low gasification efficiency, high tar content, and poor gas quality. The utility model specification with application number 02236732.2 discloses a high-efficiency biomass gasifier, including a feed inlet, an upper furnace The body, gas injection hole, furnace, gasification chamber, grate, lower furnace body, ash outlet, water supply bucket, gas outlet, and feed inlet are located on the top of the upper furnace body, and the gasification chamber is located at the lower part of the furnace. The furnace body is supported by the lower furnace body, and the grate is located at the lower end of the furnace. It is provided with a mixing room around the furnace and close to the furnace, and an annular water vapor heating pipe is arranged around the lower part of the mixing room. The water inlet of the steam heating pipe is connected with the water supply bucket, the air outlet of the steam heating pipe is connected with the mixing and heating room through the water steam conduit, and the air preheating furnace beam is arranged under the grate, and the air inlet end of the preheating furnace beam is connected with the cooling chamber. The air inlet is connected, and the gas outlet end of the preheating furnace beam is connected with the mixing heating chamber through the hot air duct. This utility model solves the problem that the preheating path of water vapor and cold air is short, and the temperature is not high enough to affect the gasification reaction efficiency. However, the structure allows the air and water vapor to mix with each other before entering the furnace to form a chemical reaction with the hot charcoal layer. reaction, the preheated air meets water vapor, and the temperature will drop again, which still affects the gasification reaction to a certain extent, and the gas production efficiency is low. In addition, the existing gasifier cannot effectively control the air and water vapor The amount of incoming air and water vapor in the furnace is not evenly distributed, which is prone to problems such as "partial burning" and "perforation" of biomass.

Invention content:

The purpose of the utility model is to provide a biomass gasification furnace with high heat transfer gasification efficiency, low tar content in the generated gas, stable quality, simple structure, convenience and practicality.

A household type biomass gasification furnace, including a furnace body, a furnace liner, a feed port, a gas outlet, and a heating water jacket. A steam preheating ring is connected to the water jacket, and the steam preheating ring is arranged in the furnace liner. In the inner layer, a plurality of steam nozzles are arranged on the inner wall of the furnace. The steam nozzles are connected with the steam superheating ring through the water steam pipe. The inner layer of the lower furnace is provided with an air preheating ring. The air preheating ring is arranged around the furnace and located at Below the steam preheating ring, there is a tuyere in the shape of a "mountain" in the furnace. The inner cavity of the tuyere is connected with the air preheating ring. The air nozzle is composed of a closed top of the air nozzle, and a plurality of air outlet holes are arranged on the side wall.

The steam nozzle and the water jacket protrude from the inner wall of the furnace.

The feed inlet is provided with a water tank and a water seal cover, and the height of the edge of the feed inlet is higher than the water surface of the water seal.

The gas outlet is provided with an exhaust net.

The gas outlet is connected with a purification device, and the gas outlet is connected to the air inlet of the purification device. The purification device includes a primary purifier and a secondary purifier, wherein the primary purifier includes a cylinder, an air inlet , air outlet, coke discharge port, and the inner wall of the cylinder is provided with partitions staggered up and down, one end of the partition is fixed on the inner wall of the cylinder, one end is inclined upward, and the width of the fixed end is narrower than that of the upward inclined end; the secondary purifier includes a cylinder, The air inlet, the air outlet, and the coke discharge port are filled with decoking medium in the cylinder, and the air outlet of the primary purifier is connected with the air inlet of the secondary purifier.

The household type biomass gasification furnace provided by the utility model adopts water vapor and hot air to enter into the furnace through the water vapor preheating ring and the air preheating ring respectively, and the amount of entry can be effectively controlled by a switch, and the air nozzle is controlled by the main air The air nozzle is composed of multiple side air nozzles arranged around the main air nozzle. The top of the air nozzle is closed, and multiple air outlet holes are set on the side wall. With this structure, the air can be evenly distributed in the furnace. The material is fully burned, which greatly improves the gasification efficiency. This household biomass gasifier integrates gas production, dust removal, and coke removal. The gas quality is good, the structure is simple, convenient and practical, and it is suitable for rural farmers.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of Fig. 1A-A;

Fig. 3 is the structural representation of the purification device of the present utility model;

Fig. 4 is a top view layout diagram of Embodiment 3 of the present utility model.

As shown in the figure, 1 is the feed inlet, 2 is the water seal cover, 3 is the water tank, 4 is the exhaust net, 5 is the gas outlet, 6 is the furnace, 7 is the heating water jacket, 8 is the water inlet, 9 10 is the air inlet, 11 is the side air nozzle, 12 is the main air nozzle, 13 is the air outlet, 14 is the ash outlet, 15 is the steam nozzle, 16 is the steam preheating ring, 17 is Water vapor channel, 18 is the air inlet of the primary purifier, 19 is the shell of the primary purifier, 20 is the clapboard, 21 is the air outlet of the primary purifier, 22 is the coke discharge port, and 23 is the inlet of the secondary purifier. Gas port, 24 is the cylinder of the secondary purifier, 25 is the decoking medium, 26 is the gas outlet of the secondary purifier, and 27 is the gas generator.

Detailed ways:

Example 1:

A household type biomass gasification furnace, including a furnace chamber 6 made of refractory material, a feed port 1, a gas outlet 5, a heating water jacket 7, and a water tank 3 and a water seal on the feed port 1 The sealing cover 2 is connected with a steam preheating ring 16 on the heating water jacket 7. The steam preheating ring 16 is arranged on the inner layer of the furnace, and six steam nozzles 15 are arranged around the inner wall of the furnace. The steam nozzles 15 pass through the water The steam pipe 17 is connected with the steam superheating ring 16, and the water steam pipe 17 is provided with a flow control switch; the inner layer of the lower furnace is provided with an air preheating ring 9, and the air preheating ring 9 is arranged around the furnace, located in the steam preheating Below the ring 16, a tuyere with a "mountain" shape is provided in the furnace 6, and the inner cavity of the tuyere communicates with the air preheating ring. The air nozzle 11 is composed of the main air nozzle 12 and the top of the side air nozzle 11 are closed, and a plurality of air outlet holes are arranged on the side wall; the water inlet 8 is connected to the heating water jacket 7, and the water inlet is connected to the external water tank; the air The preheating ring 9 is provided with an air inlet 10, and an air blower is externally connected to the air inlet, and the air blower is a variable fan.

Example 2:

The difference from Embodiment 1 is that: around the inner wall of the furnace 6, eight steam nozzles 15 are added at the lower part of the heating water jacket 7, that is, steam nozzles 15 are arranged at the upper and lower positions of the heating water jacket, and the steam nozzles 15 pass through the water The steam pipe 17 communicates with the steam superheating ring 16; the steam nozzle 15 and the heating water jacket 7 protrude from the inner wall of the furnace 6; The height of the edge of the mouth 1 is higher than the water surface of the water seal; the gas outlet 5 is provided with an exhaust net 4, and the exhaust net is densely arranged with small holes.

Example 3:

The difference from Embodiment 2 is that the gas outlet 5 of the gas generator 27 communicates with the air inlet 18 of the primary purifier, and the primary purifier includes a cylinder body 19, an air inlet 18, an air outlet 21, and a coke discharge port 22 , the inner wall of the cylinder is staggered with partitions 20 up and down, one end of the partition 20 is fixed on the inner wall of the cylinder, one end is inclined upward, and the width of the fixed end is narrower than that of the upward inclined end; the secondary purifier includes a cylinder 24, an air inlet 23 , an air outlet 26, a coke discharge port, the cylinder body is filled with corncobs 25, and the air outlet of the primary purifier communicates with the air inlet of the secondary purifier.

Claims (9)

1. household biomass gasification furnace, comprise body of heater, flue, charging aperture, gas outlet, the heating water jacket, it is characterized in that being connected with on the water jacket steam preheating ring, this steam preheating is located on the flue internal layer, inboard wall of furnace is provided with a plurality of steam jets, steam jet is connected with the steam superheating ring by the water vapour pipeline, bottom flue internal layer is provided with the air preheat ring, this air preheat ring is around the flue setting and be positioned at steam preheating ring below, be provided with the tuyere of section in the flue for " mountain " shape, this tuyere inner chamber is connected with the air preheat ring, tuyere is formed by the main air mouth with around a plurality of crosswind mouths that the main air mouth is provided with, the top closure of tuyere is provided with a plurality of exhaust vents on sidewall.

2. household biomass gasification furnace as claimed in claim 1 is characterized in that described steam jet and water jacket protrude from the inboard wall of furnace setting.

3. household biomass gasification furnace as claimed in claim 1 or 2 is characterized in that described charging aperture is provided with tank and water seal seal cover, and charging aperture edge height exceeds the water seal water surface elevation.

4. household biomass gasification furnace as claimed in claim 1 or 2 is characterized in that described gas outlet is provided with the exhaust net.

5. household biomass gasification furnace as claimed in claim 3 is characterized in that described gas outlet is provided with the exhaust net.

6. household biomass gasification furnace as claimed in claim 1 or 2, it is characterized in that gas outlet is connected with purifier, the air inlet of the gas outlet purifier of gas generator is connected, described purifier comprises first class purification device, second cleaner, wherein the first class purification device comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, cylinder inboard wall is staggeredly equipped with dividing plate up and down, described dividing plate one end is fixed on cylinder inboard wall, one end is inclined upwardly, and the stiff end ratio is inclined upwardly and holds width narrow; Second cleaner comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, is filled with the decoking medium in the cylindrical shell, and first class purification device gas outlet is connected with the second cleaner air inlet.

7. household biomass gasification furnace as claimed in claim 3, it is characterized in that gas outlet is connected with purifier, the air inlet of the gas outlet purifier of gas generator is connected, described purifier comprises first class purification device, second cleaner, wherein the first class purification device comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, and cylinder inboard wall is staggeredly equipped with dividing plate up and down, and described dividing plate one end is fixed on cylinder inboard wall, one end is inclined upwardly, and the stiff end ratio is inclined upwardly and holds width narrow; Second cleaner comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, is filled with the decoking medium in the cylindrical shell, and first class purification device gas outlet is connected with the second cleaner air inlet.

8. household biomass gasification furnace as claimed in claim 4, it is characterized in that gas outlet is connected with purifier, the air inlet of the gas outlet purifier of gas generator is connected, described purifier comprises first class purification device, second cleaner, wherein the first class purification device comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, and cylinder inboard wall is staggeredly equipped with dividing plate up and down, and described dividing plate one end is fixed on cylinder inboard wall, one end is inclined upwardly, and the stiff end ratio is inclined upwardly and holds width narrow; Second cleaner comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, is filled with the decoking medium in the cylindrical shell, and first class purification device gas outlet is connected with the second cleaner air inlet.

9. household biomass gasification furnace as claimed in claim 5, it is characterized in that gas outlet is connected with purifier, the air inlet of the gas outlet purifier of gas generator is connected, described purifier comprises first class purification device, second cleaner, wherein the first class purification device comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, and cylinder inboard wall is staggeredly equipped with dividing plate up and down, and described dividing plate one end is fixed on cylinder inboard wall, one end is inclined upwardly, and the stiff end ratio is inclined upwardly and holds width narrow; Second cleaner comprises cylindrical shell, air inlet, gas outlet, coke discharging mouth, is filled with the decoking medium in the cylindrical shell, and first class purification device gas outlet is connected with the second cleaner air inlet.

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