Incinerator for waste gas purification

Abstract

The utility model discloses an incinerator for waste gas purification. Comprising a gas mixing chamber, a first combustion chamber and a second combustion chamber which are sequentially arranged from bottom to top, a water cooling wall is further arranged on the outer wall of the incinerator, a first flame spray gun is arranged in the first combustion chamber, and a second flame spray gun is arranged in the second combustion chamber; a gas inlet of the gas mixing chamber is connected into the first combustion chamber through a second one-way valve, the one-way valve is preferably a Tesla valve, a flow guide plate is further arranged on the inner wall of the incinerator, the flow guide plate is spirally distributed in a hearth of the incinerator, on one hand, air and waste gas are fully mixed, on the other hand, flowing of airflow in the incinerator is slowed down, and the combustion efficiency is improved. And full combustion of the waste gas is realized. In order to assist the effect, the air inlet is communicated with the first combustion chamber through the second one-way valve, and the second one-way valve is obliquely upward and eccentrically arranged, so that air enters the first combustion chamber at a certain horizontal initial speed to strengthen the effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to incinerator technical field, concretely relates to a waste gas purification is with incinerator. BACKGROUND

[0002] The waste gas purification is with incinerator is a kind of equipment for handling harmful waste gas generated in industrial production process.The working principle is that by high-temperature incineration, organic matter, harmful gas and particulate matter in waste gas are converted into carbon dioxide, water vapor and harmless substance, to achieve the purpose of purifying waste gas.Incinerator usually includes combustion chamber, heat exchanger, flue gas purification system and the like parts.Core part is the combustion chamber arranged in the incinerator, waste gas is mixed with combustion air in combustion chamber, and high-temperature flame generated by burner is combusted.Heat exchanger is used to recover heat generated by combustion, to improve energy utilization efficiency.Flue gas purification system is used to further purify flue gas after combustion, to ensure that the discharged gas meets environmental protection standards.However, the existing incinerator at least has the following problems, gas mixing chamber is directly communicated with air, which is easy to cause leakage, gas mixing chamber is only hollow, air and waste gas mixing effect is not good, and several combustion chambers are connected by pipeline, and heat utilization efficiency is not high. SUMMARY

[0003] The utility model aims at overcoming several deficiencies of prior art, providing a new incinerator, to solve various technical problems existing in the prior art incinerator.

[0004] To achieve the above object, the utility model provides the following technical scheme: a waste gas purification is with incinerator, gas mixing chamber and first combustion chamber are sequentially arranged from bottom to top, first combustion chamber is connected with waste gas input pipeline, first flame lance is further arranged above waste gas input pipeline in first combustion chamber, first flame lance is inclined downward, waste gas input pipeline is connected into first combustion chamber by first one-way valve.

[0005] Further, second combustion chamber is further arranged above first combustion chamber, a plurality of second flame lances arranged in annular array are arranged in second combustion chamber.The setting of second combustion chamber can make full use of heat brought by first combustion chamber, and the mixed gas in first combustion chamber is combusted again, and organic waste gas is completely incinerated into carbon dioxide and water without pollution to environment.

[0006] Further, the diameter of second combustion chamber is less than that of first combustion chamber, the height of second combustion chamber is greater than that of first combustion chamber, and the diameter gradually changes between first combustion chamber and second combustion chamber, which is conducive to combustion heat accumulation.

[0007] Further, the inner wall of first combustion chamber and / or second combustion chamber is spirally provided with a plurality of guide plates.The guide plates make flue gas repeatedly flow in the limited space of combustion chamber, and fully combust.

[0008] Further, the furnace wall of the incinerator is externally provided with a water cooling wall, which can absorb the radiant heat of high-temperature flame or flue gas in the furnace chamber, generate steam or hot water in the pipe, reduce the temperature of the furnace wall, protect the furnace wall and prolong the service life of the incinerator.

[0009] Further, the air inlet of the mixing chamber is arranged on the bottom surface of the mixing chamber and arranged in a circular array, the air inlet is communicated with the mixing chamber through a second one-way valve, and the second one-way valve is arranged to be inclined upward from the air inlet to the furnace.

[0010] Further, the one-way valve between the air inlet and the mixing chamber is inclined and eccentric, and is arranged in a spiral upward manner, so that the air flow has an initial horizontal speed, presents a tornado-like upward movement, rotates in the circumferential direction of the first combustion chamber and the second combustion chamber, and further improves the mixing efficiency of air and waste gas.

[0011] Further, the first and / or second one-way valve is a Tesla valve, the Tesla valve does not have any movable parts, can realize one-way conduction of air flow without energy input, and has the functions of accelerating one-way gas flow and inhibiting reverse gas flow, and is convenient to maintain.

[0012] Further, the second one-way valve and the guide plate have the same spiral direction.

[0013] The advantages and beneficial effects of the utility model are as follows:

[0014] 1. A new incinerator is provided, by introducing a one-way valve and improving the structure of the mixing chamber, air can quickly enter the combustion chamber to participate in waste gas combustion, and the complex situation that the traditional combustion furnace needs to be blown by a blower to realize efficient work is improved.

[0015] 2. By spirally arranging the guide plate on the inner wall of the incinerator, the waste gas has a relatively long combustion channel in the incinerator, and a certain amount of rotation is provided during the upward movement of the waste gas, so that the waste gas is burned more completely.

[0016] 3. By spirally arranging the one-way valve of the mixing chamber, the air entering the mixing chamber can have a horizontal speed, the mixing efficiency is improved, and the further combustion of organic waste gas is facilitated.

[0017] 4. By introducing a Tesla valve, backflow can be effectively avoided during the mixing process of the mixing chamber and the intake process of the waste gas, and in addition, the Tesla valve can accelerate the flow of the one-way valve, which is conducive to the mixing relationship between the waste gas and the air.

[0018] 5、 The gas mixing chamber, the first combustion chamber and the second combustion chamber are sequentially arranged from bottom to top, the heat generated by each combustion chamber is fully utilized to transmit upward, and the energy utilization efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of an embodiment of the utility model;

[0020] Figure 2 is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 3 is a structural schematic diagram of a second one-way valve of an embodiment of the utility model;

[0022] Figure 4 is a structural schematic diagram of a section along A-A of an embodiment of the utility model;

[0023] Figure 5 is a structural schematic diagram of a Tesla valve of an embodiment of the utility model;

[0024] In the drawings:

[0025] 1-gas mixing chamber, 2-first combustion chamber, 3-second combustion chamber, 4-first flame lance, 5-second flame lance, 6-waste gas input pipeline, 7-flow guide plate, 8-water cooling wall, 9-first one-way valve, 10-second one-way valve, 11-Tesla valve, 12-gas inlet. DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model are further described below in combination with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0027] EMBODIMENT

[0028] Please refer to Figures 1-5 A waste gas incineration incinerator, including furnace door, furnace body, the hearth in the furnace body interior is from bottom to top sequentially arranged gas mixing chamber 1, first combustion chamber 2 and second combustion chamber 3. The first combustion chamber 2 is provided with waste gas input pipeline 6, and the waste gas input pipeline 6 is connected into the lower part of the first combustion chamber 2 through the first one-way valve 9, and the first flame lance 4 is also arranged in the middle upper part of the first combustion chamber 2, the first flame lance 4 is inclined downward, and the lance nozzle points to the central position of the lower part of the first combustion chamber 2, preferably, the first flame lance can be provided with multiple. The first combustion chamber 2 is connected with the second combustion chamber 3 through variable diameter, the diameter of the second combustion chamber 3 is less than that of the first combustion chamber 2, and the height is higher than that of the first combustion chamber, and a plurality of second flame lances 5 are also arranged in the second combustion chamber 3 along the circular array, the second flame lances 5 are slightly inclined downward, and the lance nozzles are aligned with the center of the incinerator.

[0029] In the first combustion chamber 2 and the second combustion chamber 3, a plurality of guide plates 7 are also spirally arranged, and a second one-way valve 10 is arranged eccentrically and obliquely in the mixing chamber. The second one-way valve 10 is arranged eccentrically and obliquely to make the air entering the mixing chamber move upward along the spiral direction while flowing to the guide plate 7, further strengthening the effect of the guide plate 7 on the uniform mixing of air and exhaust gas. It should be noted that the eccentric arrangement of the second one-way valve 10 in the embodiment is the same as the spiral direction of the guide plate. If the above technical effect is weakened, the exhaust gas and air have a small possibility of generating turbulence due to the dramatic change of the airflow direction, resulting in the failure to ignite the exhaust gas in the first combustion chamber 2. The eccentric connection of the second one-way valve 10 has a longer one-way valve channel than the vertical connection. The first flame lance 4 of the first combustion chamber 2 and the second flame lance 5 of the second combustion chamber 3 cooperate with the air, especially the oxygen in the air, to achieve sufficient combustion of the exhaust gas. When the air intake is insufficient, the air inlet 12 can also be connected to a blower.

[0030] The incinerator is also wrapped with a water-cooled wall 8. The inside is flowing water or steam. The outside receives the heat of the boiler furnace flame and reduces the temperature of the furnace body to protect the furnace body. The water-cooled wall 8 is a common boiler waste heat recovery device. By receiving the heat radiation of the incinerator, the water or steam in the water-cooled wall 8 is heated, and then flows to the production pipe network to realize a green and efficient production mode.

[0031] The first flame lance 4 and the second flame lance 5 are inclined downward and toward the central axis of the furnace. The second flame lance 5 is also arranged in a circular array. Not only does it increase the number of lances to improve the combustion effect, but it also heats the mixed gas from the lower part, making the mixed gas flow upward and the temperature higher, thereby accelerating the purification gas to leave the incinerator and facilitating continuous purification work. The first combustion chamber 2 gradually changes in diameter to connect to the second combustion chamber 3. While the air flow rate has been relatively limited by the guide plate 7, the diameter becomes smaller. According to Bernoulli's equation, the flow rate of the gas becomes relatively fast when the pipe diameter becomes smaller. It is not difficult to understand that the mixed gas in the second combustion chamber 3 has been preliminarily combusted in the first combustion chamber 2. While the number of flame lances in the second combustion chamber increases, the combustion is more concentrated, and the guide plate also has the effect of rotating and mixing the gas uniformly. While meeting the exhaust gas emission standard, it is used to improve work efficiency. Gradual diameter reduction also reduces the adhesion of smoke dust and the accumulation in the corners, which is more conducive to cleaning work and improves the heat utilization of waste heat recovery devices such as the water-cooled wall 8.

[0032] The first one-way valve 9 and the second one-way valve 10 used in the embodiment can be Tesla valves 11, which are simple in structure and can realize the function of one-way acceleration of fluid and reverse deceleration, and the one-way flow effect of the Tesla valve is also related to the length of the Tesla valve, that is, when the second one-way valve 10 is eccentrically arranged, the Tesla valve structure can be more outstandingly utilized. The second one-way valve arrangement as shown in Figure 3 The linear structure of the Tesla valve is not changed, and the cleaning work of the subsequent one-way valve is facilitated, specifically, the high-pressure water gun can be used to directly inject the cleaning water flow into the air inlet to complete the cleaning.

[0033] The flame gun is a device that achieves the working purpose by spraying high-temperature flame, and the working principle is to provide pressure gas through a connected gas source system, provide a fire source through an ignition system, mix the jet gas and combustible gas through a nozzle to form a flame, and the body of the flame gun is preferably made of a refractory and high-temperature resistant metal material such as nickel-based alloy in the embodiment. A flame temperature of about 850°C is provided for purifying waste gas.

[0034] Working principle:

[0035] The waste gas passes through the waste gas input pipeline where the first one-way valve is located and enters the first combustion chamber, and the air flowing into the first combustion chamber through the second one-way valve of the self-mixing chamber forms a mixed gas, which is preliminarily burned by the first flame gun in the first combustion chamber, and the mixed gas rises due to heating, and since the second one-way valve is arranged, the air drives the waste gas to have a horizontal movement speed, and the mixed gas continues to spiral upward along the guide plate, and after being completely burned by the second flame gun arranged in the second combustion chamber, it flows out of the incinerator, and can be optionally flowed into other waste gas treatment devices such as a bag-type dust collector, a power wave washing tower, etc.

[0036] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection range of the present application.

Claims

1. An incinerator for waste gas purification, characterized in that: A mixing chamber and a first combustion chamber are arranged from bottom to top. The first combustion chamber is connected to an exhaust gas input pipe. A first flame spray gun is also arranged above the exhaust gas input pipe of the first combustion chamber. The first flame spray gun is tilted downward, and the exhaust gas input pipe is connected to the first combustion chamber through a first one-way valve.

2. The exhaust gas purification incinerator according to claim 1, characterized in that: A second combustion chamber is provided above the first combustion chamber, and a plurality of second flame spray guns arranged in a circular array are provided in the second combustion chamber.

3. The exhaust gas purification incinerator according to claim 2, characterized in that: The diameter of the second combustion chamber is smaller than that of the first combustion chamber, the height of the second combustion chamber is greater than that of the first combustion chamber, and the diameters of the first combustion chamber and the second combustion chamber change gradually.

4. The exhaust gas purification incinerator according to claim 2, characterized in that: The inner wall of the first combustion chamber and / or the second combustion chamber is spirally provided with a plurality of guide plates.

5. The exhaust gas purification incinerator according to claim 4, characterized in that: The bottom surface of the mixing chamber is provided with an air inlet, which is arranged along a circular array. The air inlet is connected to the mixing chamber through a second one-way valve, and the setting direction of the second one-way valve is inclined upward from the air inlet to the furnace.

6. The exhaust gas purification incinerator according to claim 5, characterized in that: The second one-way valve is arranged obliquely and eccentrically.

7. The exhaust gas purification incinerator according to claim 5 or 6, characterized in that: The first and / or second one-way valve is a Tesla valve.

8. The exhaust gas purification incinerator according to claim 5 or 6, characterized in that: The oblique eccentric direction of the second one-way valve is the same as the spiral direction of the guide plate.

9. The exhaust gas purification incinerator according to claim 7, characterized in that: A water-cooled wall is arranged outside the incinerator.

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