Biomass gas gasifier control system

Abstract

The utility model discloses a control system of a biomass gas gasifier, and belongs to the technical field of biomass gasifiers. A biomass gas gasification furnace control system comprises a shell and a furnace body and further comprises an oxygen supply channel, the oxygen supply channel is installed on the surface of the furnace body, an oxygen supply pipe is arranged on one side of the oxygen supply channel, one end of the oxygen supply pipe is connected with the oxygen supply channel, the other end of the oxygen supply pipe extends out of the shell, a guide plate is arranged below the oxygen supply channel, and the guide plate is connected with the furnace body. A guide block is arranged below the guide plate, a second filter screen is arranged below the guide block, a first filter screen is arranged on the side face of the second filter screen, and a heat preservation layer is arranged between the shell and the furnace body. In order to solve the problems that partial raw materials are wasted due to insufficient pyrolysis and blockage is easily caused during deslagging, oxygen is uniformly filled into an oxide layer of the raw materials through an oxygen supply channel, ash falls to the bottom of a shell along the surface of a guide block, and a slag pushing plate pushes the ash into a slag discharging channel.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass gasifiers, in particular to a biomass fuel gas gasifier control system. Background Art

[0002] Biomass gasifiers can convert solid biomass raw materials into combustible gas, which can not only effectively utilize renewable resources such as crop waste and forest residues, but also reduce environmental pollution and improve energy utilization efficiency. This technology has a wide range of applications, including power generation, heating, and chemical production.

[0003] A Chinese patent with publication number CN204529763U discloses a biomass gas gasification furnace, which is provided with a spherical valve on the cracking gas outlet pipe to facilitate the discharge of the cracking gas and close the furnace body. The thermal cracking chamber is located in the lower middle part of the gasification furnace, is in the shape of an inverted cone, and is provided with a furnace carbon discharge port. The rotating grate is arranged in the middle of the furnace carbon discharge port of the thermal cracking chamber, and creeps to promote carbon discharge under the rotation driven by the motor. The equipment is particularly suitable for the thermal cracking process of various biomasses, has a high cracking gas conversion rate, and is energy-saving and pollution-free.

[0004] In the above patent, there is a problem that the pyrolysis is not sufficient, resulting in the waste of some raw materials, and there is also a problem of easy blockage during slag discharge; therefore, it does not meet the existing needs, and a biomass gasification furnace control system is proposed. Utility Model Content

[0005] The utility model aims to provide a biomass gasification furnace control system, by arranging an oxygen supply channel on the lower surface of the furnace body, the inner surface of the oxygen supply channel is provided with a through hole, the outer surface of the oxygen supply channel is connected to the oxygen supply channel, oxygen enters the oxygen supply channel from the oxygen supply pipe and then evenly enters the furnace body; raw materials enter from the feed port, and accumulate on the top of the guide block due to gravity falling, the surface of the guide block is provided with a guide block, after the pyrolysis of the raw materials is completed, the guide block rotates, the ash falls along the guide block, passes through the filter screen and falls to the bottom of the shell, and the bottom of the shell is provided with a slag return plate to push the ash into the slag discharge channel, which can solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biomass gas gasification furnace control system, comprising a shell and a furnace body, and also comprising an oxygen supply channel, wherein the oxygen supply channel is installed on the surface of the furnace body, an oxygen supply pipe is arranged on one side of the oxygen supply channel, one end of the oxygen supply pipe is connected to the oxygen supply channel, and the other end of the oxygen supply pipe extends to the outside of the shell, a guide plate is arranged below the oxygen supply channel, a guide block is arranged below the guide plate, a second filter is arranged below the guide block, a first filter is arranged on the side of the second filter, a scraper plate is arranged below the second filter, and a slag pusher plate is arranged below the scraper plate, a feed port is arranged at the upper end of the shell, an air outlet is arranged below the feed port, and an insulation layer is arranged between the shell and the furnace body.

[0007] Preferably, the oxygen supply channel is an internally hollow annular structure, the inner annular surface of the oxygen supply channel is provided with a plurality of through holes, and the outer annular surface of the oxygen supply channel is connected to the oxygen supply pipe.

[0008] Preferably, a plurality of guide square plates are arranged on the surface of the guide block, and the guide square plates extend upward from the bottom surface of the guide block and exceed the top surface of the guide block.

[0009] Preferably, a slag storage bucket is provided on the side of the shell, the shell and the slag storage bucket are connected through a slag discharge channel, the slag discharge channel is connected to the interior of the shell, and a worm is provided inside the slag discharge channel.

[0010] Preferably, a rotating shaft is provided at the lower end of the shell, and the rotating shaft extends upward and is respectively connected with the slag pushing plate, the slag scraping plate and the guide block.

[0011] Preferably, the structure of the slag pusher plate is an arc-shaped square plate, which is centered on the rotation axis and is distributed in a circle at the bottom end of the shell.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model arranges an oxygen supply channel on the lower surface of the furnace body, the outer surface of the oxygen supply channel is connected to the oxygen supply pipe, oxygen enters the oxygen supply channel from the oxygen supply pipe and then enters the furnace body, and the inner surface of the oxygen supply channel is provided with through holes, and oxygen can be evenly diffused to the oxide layer of the raw material through the through holes, so that the raw material can be fully utilized, thereby improving the efficiency of the oxidation reaction.

[0014] 2. The utility model allows raw materials to enter from the feed port, and the raw materials fall due to gravity and accumulate on the top of the guide block. A guide block is provided on the surface of the guide block. After the pyrolysis of the raw materials is completed, the bottom raw materials are carbonized. At this time, the guide block rotates, and the ash falls along the guide block, passes through the filter screen and falls to the bottom of the shell. A slag pushing plate is provided at the bottom of the shell to push the ash into the slag discharge channel. A worm is provided inside the slag discharge channel. The worm pushes the ash into the slag storage bucket, reducing the possibility of blockage during slag discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall front view of the utility model;

[0016] Figure 2 It is an overall cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic diagram of the furnace structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the slag pushing plate structure of the utility model.

[0019] In the figure: 1. Shell; 101. Feed inlet; 102. Air outlet; 103. Insulation layer; 2. Slag storage bucket; 201. Slag discharge channel; 202. Worm; 3. Furnace body; 301. Oxygen supply pipe; 302. Oxygen supply channel; 303. Guide plate; 4. First filter screen; 401. Second filter screen; 5. Guide block; 501. Slag scraper plate; 502. Slag pusher plate. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In order to solve the problem of insufficient pyrolysis, resulting in partial waste of raw materials, and the problem of clogging during slag discharge, please refer to Figure 1-4 The utility model provides an embodiment: a biomass gasification furnace control system, comprising a shell 1 and a furnace body 3, and also comprising an oxygen supply channel 302, the oxygen supply channel 302 is installed on the surface of the furnace body 3, an oxygen supply pipe 301 is arranged on one side of the oxygen supply channel 302, one end of the oxygen supply pipe 301 is connected to the oxygen supply channel 302, and the other end of the oxygen supply pipe 301 extends to the outside of the shell 1, a guide plate 303 is arranged below the oxygen supply channel 302, a guide block 5 is arranged below the guide plate 303, a second filter screen 401 is arranged below the guide block 5, a first filter screen 4 is arranged on the side of the second filter screen 401, a scraping plate 501 is arranged below the second filter screen 401, and a slag pushing plate 502 is arranged below the scraping plate 501, a feed port 101 is arranged at the upper end of the shell 1, an air outlet 102 is arranged below the feed port 101, and an insulation layer 103 is arranged between the shell 1 and the furnace body 3.

[0022] The oxygen supply channel 302 is a circular ring structure with a hollow interior. The inner ring surface of the oxygen supply channel 302 is provided with a plurality of through holes. The outer ring surface of the oxygen supply channel 302 is connected with the oxygen supply pipe 301. Oxygen enters the oxygen supply channel 302 from the oxygen supply pipe 301 and then enters the furnace body 3. The oxygen can be evenly diffused into the oxide layer of the raw material through the through holes, so that the raw material can be fully utilized, further improving the efficiency of combustible gas output.

[0023] A slag storage bucket 2 is arranged on the side of the shell 1, and the shell 1 and the slag storage bucket 2 are connected through a slag discharge channel 201, and the slag discharge channel 201 is communicated with the interior of the shell 1, and a worm 202 is arranged inside the slag discharge channel 201. A rotating shaft is arranged at the lower end of the shell 1, and the rotating shaft extends upward and is respectively connected with a slag pushing plate 502, a slag scraping plate 501 and a guide block 5, one end of the rotating shaft extends to the outside of the shell 1 and is connected with a motor, and the structure of the slag pushing plate 502 is an arc-shaped square plate, which is centered on the rotating shaft and is distributed in a circle at the bottom end of the shell 1, and a plurality of guide square plates are arranged on the surface of the guide block 5, and the guide square plates extend upward from the bottom surface of the guide block 5 and exceed the top surface of the guide block 5.

[0024] The raw materials enter the furnace body 3 from the feed port 101, and are accumulated on the top of the guide block 5 due to gravity. After the pyrolysis of the raw materials is completed, the raw materials at the bottom are carbonized. At this time, the guide block 5 rotates, and the ash falls along the guide block, passes through the second filter screen 401 and falls to the bottom of the shell 1. A slag pushing plate 502 is provided at the bottom of the shell 1. The slag pushing plate 502 rotates to push the ash into the slag discharge channel 201. A worm 202 is provided inside the slag discharge channel 201. The worm 202 pushes the ash into the slag storage bucket 2, which reduces the possibility of blockage during slag discharge and further improves the efficiency of slag discharge.

[0025] Working principle: the material enters the furnace body 3 from the feed port 101, and accumulates on the top of the guide block 5 due to gravity. When the raw materials accumulate to a certain height, the feed port 101 is closed and pyrolysis begins. During the pyrolysis process, oxygen enters the oxygen supply channel 302 from the oxygen supply pipe 301 and then enters the furnace body. The oxygen can be evenly diffused into the oxide layer of the raw materials, so that the raw materials can be fully utilized. After the pyrolysis is completed, the bottom raw materials are carbonized. At this time, the guide block 5 rotates, and the ash falls along the guide block through the second filter screen 401 and falls to the bottom of the shell 1. A slag pushing plate 502 is provided at the bottom of the shell 1. The slag pushing plate 502 rotates to push the ash into the slag discharge channel 201, and the worm 202 inside the slag discharge channel 201 pushes the ash into the slag storage bucket 2.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biomass gasification furnace control system, comprising a housing (1) and a furnace body (3), characterized in that: The furnace (3) further comprises an oxygen supply channel (302), wherein the oxygen supply channel (302) is installed on the surface of the furnace body (3), an oxygen supply pipe (301) is arranged on one side of the oxygen supply channel (302), one end of the oxygen supply pipe (301) is connected to the oxygen supply channel (302), and the other end of the oxygen supply pipe (301) extends to the outside of the shell (1), a guide plate (303) is arranged below the oxygen supply channel (302), a guide block (5) is arranged below the guide plate (303), and the guide block (5) A second filter screen (401) is arranged below the shell (1), a first filter screen (4) is arranged on the side of the second filter screen (401), a scraping plate (501) is arranged below the second filter screen (401), and a slag pushing plate (502) is arranged below the scraping plate (501), a feed port (101) is arranged at the upper end of the shell (1), an air outlet (102) is arranged below the feed port (101), and a heat-insulating layer (103) is arranged between the shell (1) and the furnace body (3).

2. A biomass gasification furnace control system according to claim 1, characterized in that: The oxygen supply channel (302) is a circular ring structure with a hollow interior. The inner ring surface of the oxygen supply channel (302) is provided with a plurality of through holes, and the outer ring surface of the oxygen supply channel (302) is connected to the oxygen supply pipe (301).

3. A biomass gasification furnace control system according to claim 1, characterized in that: The surface of the guide block (5) is provided with a plurality of guide square plates, and the guide square plates extend upward from the bottom surface of the guide block (5) and exceed the top surface of the guide block (5).

4. A biomass gasification furnace control system according to claim 1, characterized in that: A slag storage bucket (2) is provided on the side of the shell (1); the shell (1) and the slag storage bucket (2) are connected via a slag discharge channel (201); the slag discharge channel (201) is communicated with the interior of the shell (1); and a worm (202) is provided inside the slag discharge channel (201).

5. The biomass gasification furnace control system according to claim 1, characterized in that: A rotating shaft is provided at the lower end of the shell (1), and the rotating shaft extends upward and is respectively connected to the slag pushing plate (502), the slag scraping plate (501) and the guide block (5).

6. A biomass gasification furnace control system according to claim 5, characterized in that: The structure of the slag pushing plate (502) is an arc-shaped square plate, which is centered on the rotation axis and is distributed in a circle at the bottom end of the shell (1).

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