Combustion device using inferior gas fuel

Abstract

The utility model relates to the technical field of combustors, in particular to a combustion device using inferior gas fuel, and solves the problem that inferior gas cannot be safely and effectively combusted due to unreasonable design of a combustion chamber in the prior art. Comprising a combustion chamber and a burnout chamber, the combustion chamber is vertically arranged, the burnout chamber is transversely arranged, a gas combustor extending downwards is arranged at the top of the combustion chamber, an air distribution section connected with the burnout chamber is arranged on the side wall of the bottom of the combustion chamber, a second air inlet piece is connected to the air distribution section, and a first air inlet piece is arranged on the side portion of the combustion chamber; fuel can be combusted twice in the combustion chamber and the burnout chamber, low-nitrogen-oxide-concentration emission can be achieved, an internal air flue of the burnout chamber is perpendicular to the combustion chamber, the total staying time of hot air in the combustion chamber and the burnout chamber is longer than 2 seconds on the premise that the occupied space of equipment is as small as possible, the combustion efficiency is improved, and the energy consumption is reduced. Impurities in the inferior gas drop to a refractory material at the bottom of the combustion chamber, so that the combustion stability is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion, in particular to a combustion device using inferior gas fuel. Background Art

[0002] As we all know, low calorific value gas is usually difficult to burn stably. At the same time, a large amount of water vapor and high molecular weight organic matter will be mixed into the low calorific value gas during the production process. This has been proven in our company's practice of using air to gasify biomass and coal to produce synthesis gas. In addition, in some hazardous waste disposal processes, there are also cases where a large amount of VOCs gas carries water vapor and high molecular weight organic matter. Our company used to use hot air furnaces to directly burn low calorific value fuels, and combustion chamber damage and fire extinguishing accidents occurred frequently. After research and experiments, the structure and layout of the combustion device were improved by design, so this solution was produced, which completely improved the usage. Utility Model Content

[0003] Based on the above description, the utility model provides a combustion device using low-quality gas fuel to solve the problem in the prior art that the combustion chamber is not designed reasonably, resulting in the inability to safely and effectively burn low-quality gas.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A combustion device using inferior gas fuel, comprising:

[0006] A combustion chamber, the combustion chamber is arranged vertically, a gas burner extending downward is arranged on the top of the combustion chamber, and a first air inlet is arranged on the side of the combustion chamber, and the first air inlet supplies air to the end of the gas burner;

[0007] An air distribution section connected to the bottom side wall of the combustion chamber, and having a second air inlet member connected thereto;

[0008] A burnout chamber connected to the end of the air distribution section, wherein the internal air duct is perpendicular to the combustion chamber;

[0009] An air outlet is connected to the end of the burnout chamber.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, an isolation cylinder is provided on the outside of the gas burner, and the first air inlet member includes a first air inlet and a first air tube, the first air tube is sleeved on the outside of the isolation cylinder, the first air inlet is connected to the first air tube, and a first annular air inlet plate is provided at the bottom of the isolation cylinder, and the first air inlet plate is a conical structure.

[0012] Furthermore, the air distribution section includes a first connecting member and a second connecting member that maintain a distance, the first connecting member is connected to the bottom side wall of the combustion chamber, the second connecting member is connected to the side wall of the burnout chamber, the second air inlet member includes a second air inlet and a second air duct, the second air duct is arranged between the first connecting member and the second connecting member and is respectively connected to the two, and the second air inlet is connected to the second air duct.

[0013] Furthermore, the end of the first connecting member is connected to a second annular air induction plate, and the second air induction plate forms a closed conical structure.

[0014] Furthermore, the gas burner extends to the bottom end of the isolation cylinder, and the tube body of the gas burner is a cone whose diameter decreases continuously from top to bottom.

[0015] Furthermore, a refractory material is provided at the bottom of the combustion chamber, and the position of the air distribution section is higher than the refractory material.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0017] This scheme designs a structure in which the combustion chamber, the air distribution section and the burnout chamber are connected in sequence, and the air ducts of the combustion chamber and the burnout chamber are perpendicular to each other, so that the fuel can be burned twice in the combustion chamber and the burnout chamber. Due to the design of staged combustion, low nitrogen oxide concentration emissions can be achieved. Due to the structural design of the combustion chamber, the burnout chamber and the air distribution section, the internal air duct of the burnout chamber is perpendicular to the combustion chamber, so that the equipment can meet the total residence time of the hot air in the combustion chamber and the burnout chamber for more than 2 seconds while occupying the smallest possible space, thereby improving the combustion efficiency. The flame nozzle of the gas burner in the combustion chamber is vertically downward, and the condensed water and high molecular organic matter such as tar mixed in the inferior gas drip to the refractory material at the bottom of the combustion chamber to ensure the stability of combustion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a combustion device using inferior gas fuel provided by an embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of internal section;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Combustion chamber; 2. Gas burner; 3. Air distribution section; 4. Burnout chamber; 5. Air outlet; 6. Isolation cylinder; 7. First air inlet; 8. First air duct; 9. First air induced draft plate; 10. First connecting piece; 11. Second connecting piece; 12. Second air inlet; 13. Second air duct; 14. Second air induced draft plate; 15. Refractory material. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0025] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0026] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0027] like Figure 1 , Figure 2A combustion device using inferior gas fuel is shown, comprising a combustion chamber 1 and a burnout chamber 4, wherein the combustion chamber 1 is arranged vertically and the burnout chamber 4 is arranged horizontally, a gas burner 2 extending downward is arranged on the top of the combustion chamber 1, an air distribution section 3 connected to the burnout chamber 4 is arranged on the bottom side wall of the combustion chamber 1, an air outlet 5 is arranged at the end of the burnout chamber 4, a second air inlet member is connected to the air distribution section 3, and a first air inlet member is arranged on the side of the combustion chamber 1. The first air inlet piece blows air into the combustion chamber 1, and the air is mixed with the inferior gas at the end of the gas burner 2 for the first combustion, and the burned gas enters the burnout chamber 4 from the air distribution section 3, and air is blown into the air distribution section 3, and a second combustion is carried out in the burnout chamber 4. Due to the design of staged combustion, low nitrogen oxide concentration emissions can be achieved, and due to the structural design of the combustion chamber 1, the burnout chamber 4 and the air distribution section 3, the internal air duct of the burnout chamber 4 is perpendicular to the combustion chamber 1, so that the equipment can meet the total residence time of the hot air in the combustion chamber 1 and the burnout chamber 4 for more than 2 seconds while occupying as little space as possible, thereby improving the combustion efficiency.

[0028] The blast port of the gas burner 2 is vertically downward, and the condensed water and high molecular organic matter such as tar in the inferior gas will drip to the bottom of the combustion chamber 1 due to gravity. The bottom of the combustion chamber 1 is provided with a refractory material 15, and the position of the air distribution section 3 is higher than the refractory material 15. The outside of the gas burner 2 is provided with an isolation cylinder 6, and the first air inlet includes a first air inlet 7 and a first air tube 8. The first air tube 8 is sleeved on the outside of the isolation cylinder 6. The first air tube 8 is fixed to the isolation cylinder 6 by a connecting piece. The first air inlet 7 is tangentially connected to the first air tube 8. The bottom of the isolation cylinder 6 is provided with an annular first air induction plate 9, and the first air induction plate 9 is a conical structure. The fan equipment blows air into the first air inlet, and the air fills the space between the first air tube 8 and the isolation air tube. Then, it is guided by the first air induction plate 9 and enters the bottom of the isolation cylinder 6 to mix and burn with the inferior gas ejected from the gas burner 2.

[0029] The gas burner 2 extends to the bottom end of the isolation cylinder 6. This design can make the tube of the gas burner 2 long enough, and the tank of the gas burner 2 is designed as a cone with a diameter that decreases from top to bottom. The tube has a slope, and the condensed water and high molecular organic matter such as tar in the tube of the gas burner 2 can flow into the burner. The combustion chamber 1 is an insulated cavity to ensure the stable combustion of inferior gas. The amount of combustion air supplied by the gas burner 2 is within 1.2 times the theoretical requirement. The internal temperature of the combustion chamber 1 is maintained above 800 degrees, and the high temperature and strong heat radiation of the combustion chamber 1 are used to burn out the condensed water and high molecular organic matter such as tar.

[0030] The air distribution section 3 includes a first connector 10 and a second connector 11 which maintain a distance from each other. The first connector 10 is connected to the bottom side wall of the combustion chamber 1, and the second connector 11 is connected to the side wall of the burnout chamber 4. The second air inlet includes a second air inlet 12 and a second air duct 13. The second air duct 13 is arranged between the first connector 10 and the second connector 11 and is respectively connected to the two. The second air inlet 12 is connected to the second air duct 13. An annular second air induction plate 14 is connected to the end of the first connector 10, and the second air induction plate 14 forms a closed conical structure. The air distribution section 3 is used for secondary air distribution to supplement more combustion air. The air enters from the second air inlet 12 and is guided by the second air induction plate 14 to merge into the hot air. By adjusting the secondary air distribution volume, the temperature of the air outlet 5 can be changed.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combustion device using inferior gas fuel, characterized in that: include: A combustion chamber, the combustion chamber is arranged vertically, a gas burner extending downward is arranged on the top of the combustion chamber, and a first air inlet is arranged on the side of the combustion chamber, and the first air inlet supplies air to the end of the gas burner; An air distribution section connected to the bottom side wall of the combustion chamber, and having a second air inlet member connected thereto; A burnout chamber connected to the end of the air distribution section, wherein the internal air duct is perpendicular to the combustion chamber; An air outlet is connected to the end of the burnout chamber.

2. A combustion device using low-quality gas fuel according to claim 1, characterized in that: An isolation cylinder is arranged on the outside of the gas burner, and the first air inlet member includes a first air inlet and a first air tube, the first air tube is sleeved on the outside of the isolation cylinder, the first air inlet is connected to the first air tube, and a first annular air inlet plate is arranged on the bottom of the isolation cylinder, and the first air inlet plate is a conical structure.

3. A combustion device using low-quality gas fuel according to claim 1, characterized in that: The air distribution section includes a first connecting member and a second connecting member that maintain a distance between them. The first connecting member is connected to the bottom side wall of the combustion chamber, and the second connecting member is connected to the side wall of the burnout chamber. The second air inlet member includes a second air inlet and a second air duct. The second air duct is arranged between the first connecting member and the second connecting member and is respectively connected to the two. The second air inlet is connected to the second air duct.

4. A combustion device using low-quality gas fuel according to claim 3, characterized in that: The end of the first connecting member is connected to a second annular air induction plate, and the second air induction plate forms a closed conical structure.

5. A combustion device using low-quality gas fuel according to claim 2, characterized in that: The gas burner extends to the bottom end of the isolation cylinder, and the tube body of the gas burner is a cone whose diameter decreases continuously from top to bottom.

6. A combustion device using low-quality gas fuel according to claim 1, characterized in that: A refractory material is provided at the bottom of the combustion chamber, and the position of the air distribution section is higher than the refractory material.

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