Incineration system for high-concentration organic waste gas

Abstract

The utility model discloses an incineration system for high-concentration organic waste gas, relates to the technical field of combustion equipment, and solves the technical problem of high use cost of a heat storage oxidation furnace in the prior art. The incineration system for the high-concentration organic waste gas comprises a collecting device used for collecting the high-concentration organic waste gas; the incinerator is communicated with the collecting device through a main pipe for conveying high-concentration organic waste gas; the non-return device is mounted on the main pipe and is used for preventing tempering; the flame detector is mounted on the main pipe; and the flame arrester is mounted on the main pipe. Therefore, the collecting device is arranged to enrich the organic waste gas and then incinerate the organic waste gas, so that the heat value is increased, and additional energy does not need to be provided to maintain combustion, so that the use cost of the incineration system for the high-concentration organic waste gas is lower, and due to the arrangement of the non-return device, the flame detector and the flame arrester, the combustion efficiency is improved. Therefore, the incineration system for the high-concentration organic waste gas, provided by the utility model, is higher in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion equipment, in particular to a high-concentration organic waste gas incineration system. Background Art

[0002] Incineration is a high-temperature oxidation pyrolysis treatment technology, which uses excess air to oxidize volatile organic compounds (VOCs), flammable liquids or solids at high temperatures in an incinerator. The harmful and toxic substances in the waste are oxidized and pyrolyzed at high temperatures of 800 to 1200°C and destroyed. It is a treatment technology that can simultaneously achieve waste harmlessness, reduction, and resource utilization. The purpose of incineration is to remove pollutants while minimizing the generation of new pollutants to avoid secondary pollution.

[0003] In the production of pharmaceuticals and fine chemicals, VOCs are produced along with the production process of the main products. Improper handling will cause environmental or safety risks. Incineration is one of the main technologies for dealing with VOCs, but the incineration process requires expensive equipment and has certain safety risks. Combustion and explosion may occur when the combustible gas or the vapor of combustible material reaches a certain concentration in the air. When the gas concentration is too low, there is not enough fuel to sustain the explosion; when the gas concentration is too high, there is not enough oxygen to sustain combustion. Combustion and explosion can only occur between two concentrations of gas. These two concentrations are called the lower explosion limit (LEL) and the upper explosion limit (UEL), which are usually expressed as volume percentages. The concentration range that can cause combustion and explosion is called the explosion limit (also known as the explosion limit). Therefore, ensuring the safety of the incineration process is an important challenge in the field of incineration.

[0004] Regenerative Thermal Oxidizer (RTO) or similar equipment is a widely used VOC incineration treatment device. This device dilutes volatile organic compounds (VOC) through a large amount of air so that its concentration is far away from the lower explosion limit (LEL), thereby achieving the purpose of controlling the safety of the waste gas incineration process. In actual use, this type of equipment has certain safety hazards and a high accident rate. In addition, this method has a low concentration of VOC due to the large amount of air dilution, and the waste heat generated during the incineration process is small. Not only is there no waste heat recovery value, but a large amount of natural gas is also required to maintain the incineration temperature, resulting in high cost of use. Utility Model Content

[0005] The utility model discloses a high-concentration organic waste gas incineration system, which is used to solve the technical problem of high use cost of the thermal storage oxidation furnace in the prior art.

[0006] The utility model is realized through the following technical solutions:

[0007] A high-concentration organic waste gas incineration system, comprising:

[0008] A collecting device, wherein the collecting device is used to collect the high-concentration organic waste gas;

[0009] An incinerator, wherein the incinerator is connected to the collecting device via a main pipe for conveying the high-concentration organic waste gas, and the incinerator is used to incinerate the organic waste gas;

[0010] a non-return device, the non-return device being installed on the main pipe and being used to prevent backfire;

[0011] a flame detector, the flame detector being mounted on the main pipe;

[0012] A flame arrester is installed on the main pipe.

[0013] Furthermore, the incineration system further comprises:

[0014] An oxygen reduction device is connected to the collecting device, and is used to reduce the oxygen content in the collecting device.

[0015] Furthermore, the oxygen reduction device comprises:

[0016] A nitrogen pipe, wherein the collecting device is provided with a nitrogen supply port, one end of the nitrogen pipe is installed at the nitrogen supply port, and the nitrogen pipe is used to transport nitrogen;

[0017] An oxygen detector is installed on the main pipe.

[0018] Furthermore, the non-return device comprises:

[0019] An exhaust gas compressor, the exhaust gas compressor is connected to the main pipe;

[0020] A water seal tank is connected to the main pipe.

[0021] Furthermore, the non-return device further comprises:

[0022] A proportional regulator, which is installed on the main pipe and located at the front end of the water seal tank;

[0023] A one-way valve is installed on the main pipe.

[0024] Furthermore, the incineration system also includes a waste heat utilization device, and the waste heat utilization device includes:

[0025] A waste heat boiler is connected to the incinerator.

[0026] An economizer is connected to the waste heat boiler.

[0027] Furthermore, the incineration system further comprises:

[0028] A spray tower is connected to the economizer.

[0029] Furthermore, the incineration system further comprises:

[0030] A fan is installed between the economizer and the spray tower.

[0031] Furthermore, the incineration system further comprises:

[0032] A waste liquid storage tank, wherein the waste liquid storage tank is used to store waste liquid;

[0033] An infusion pump, wherein a liquid inlet end of the infusion pump is connected to the waste liquid storage tank;

[0034] A spray gun, one end of which is connected to the liquid outlet of the infusion pump, and the other end of which extends into the incinerator;

[0035] A burner is installed on the incinerator and located on one side of the spray gun.

[0036] Furthermore, the incineration system further comprises:

[0037] A controller is electrically connected to the flame detector, the flame arrester, the oxygen reduction device and the proportional regulator through lines.

[0038] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0039] The utility model provides a high-concentration organic waste gas incineration system comprising a collecting device, an incinerator, a non-return device, a flame detector and a flame arrester. The collecting device is used for collecting the high-concentration organic waste gas. The incinerator and the collecting device are connected through a main pipe for conveying the high-concentration organic waste gas. The incinerator is used for incinerating the organic waste gas. The non-return device is installed on the main pipe. The non-return device is used to prevent backfire. The flame detector is installed on the main pipe. The flame arrester is installed on the main pipe.

[0040] Through the above structure, when it is necessary to incinerate the organic waste gas, the generated organic waste gas is first collected by the collecting device, and the concentration of the organic waste gas in the collecting device is made much higher than the upper explosion limit, that is, the oxygen concentration in the collecting device is made much lower than the minimum oxygen concentration required for combustion and explosion. In this way, the calorific value generated when the organic waste gas is incinerated is greatly improved, and there is no need to provide additional energy to maintain combustion, which greatly saves energy and reduces the cost of use. The setting of the check device can avoid backfire, and the setting of the flame detector can facilitate the detection of whether there are flame ions in the main pipe to improve the safety of the incineration system. The flame arrester installed on the main pipe prevents the spread of flame, which further improves the safety of the incineration system.

[0041] Therefore, the organic waste gas is enriched by setting up a collection device and then incinerated, so that the calorific value is increased, and there is no need to provide additional energy to maintain combustion, so that the use cost of the high-concentration organic waste gas incineration system provided by the utility model is lower. The setting of the check device, flame detector and flame arrester makes the high-concentration organic waste gas incineration system provided by the utility model safer and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0043] Figure 1 A schematic structural diagram of a high-concentration organic waste gas incineration system provided in an embodiment of the utility model.

[0044] Marks and corresponding parts names in the attached drawings:

[0045] 1-collection device, 2-incinerator, 3-check device, 31-exhaust compressor, 32-water seal tank, 33-proportional regulator, 34-check valve, 4-flame detector, 5-flame arrester, 6-oxygen reduction device, 61-nitrogen pipe, 62-oxygen detector, 7-waste heat utilization device, 71-waste heat boiler, 72-economizer, 8-spray tower, 9-fan, 10-waste liquid storage tank, 20-infusion pump, 30-spray gun, 40-burner. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0047] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly or indirectly connected to the other component.

[0048] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] Example

[0051] This embodiment provides a high-concentration organic waste gas incineration system, which is used to solve the technical problem of high cost of using thermal storage oxidation furnace in the prior art. The high-concentration organic waste gas incineration system includes a collection device 1, an incinerator 2, a non-return device 3, a flame detector 4 and a flame arrester 5, wherein:

[0052] The collecting device 1 is used to collect high-concentration organic waste gas. In this way, through the setting of the collecting device 1, the organic waste gas generated in the production is enriched through the collecting device 1, so that the concentration of the organic waste gas in the collecting device 1 is much higher than the upper explosion limit, that is, the oxygen content in the collecting device 1 is much lower than the minimum oxygen concentration required for combustion and explosion, so that the calorific value generated during incineration is greatly improved, and there is no need to provide additional energy to maintain combustion, which saves energy, reduces the cost of use, and avoids combustion and explosion in the collecting device 1.

[0053] An air inlet is provided on the incinerator 2, and the incinerator 2 is connected to a main pipe for conveying organic waste gas through the air inlet. The incinerator 2 is used to incinerate the organic waste gas. Optionally, the incinerator 2 is a horizontal incinerator 2. Specifically, the horizontal incinerator 2 includes an outer shell and fire bricks. The outer shell is a hollow cylindrical structure made of metal material, and the fire bricks are built on the inner wall of the outer shell to achieve the effect of heat preservation.

[0054] The non-return device 3 is installed on the main pipe. The non-return device 3 is provided to prevent backfire, thereby improving the safety of the incineration system for high-concentration organic waste gas provided by the embodiment of the utility model.

[0055] The flame detector 4 is installed on the main pipe. The flame detector 4 is used to detect whether combustion occurs in the main pipe, so as to improve the safety of the incineration system for high-concentration organic waste gas provided by the embodiment of the utility model.

[0056] Optionally, there are multiple flame detectors 4, and multiple flame detectors 4 monitor the situation in the main pipe at the same time, further improving the safety of the incineration system.

[0057] The flame arrester 5 is installed on the main pipe to prevent the fire from spreading.

[0058] Through the above structure, when it is necessary to incinerate the organic waste gas, the generated organic waste gas is first collected by the collecting device 1, and the concentration of the organic waste gas in the collecting device 1 is made much higher than the upper explosion limit, that is, the oxygen concentration in the collecting device 1 is made much lower than the minimum oxygen concentration required for combustion and explosion. In this way, the calorific value generated when the organic waste gas is incinerated is greatly improved, and there is no need to provide additional energy to maintain combustion, which greatly saves energy and reduces the cost of use. The setting of the non-return device 3 can avoid backfire, and the setting of the flame detector 4 is convenient for detecting whether there are flame ions in the main pipe to improve the safety of the incineration system. The flame arrester 5 installed on the main pipe prevents the flame from spreading, which further improves the safety of the incineration system.

[0059] Therefore, the organic waste gas is enriched by the setting of the collection device 1 and then incinerated, so that the calorific value is increased, and there is no need to provide additional energy to maintain combustion, so that the use cost of the high-concentration organic waste gas incineration system provided by the utility model is lower. The setting of the non-return device 3, the flame detector 4 and the flame arrester 5 makes the high-concentration organic waste gas incineration system provided by the utility model safer and more practical.

[0060] Through the above structure, when it is necessary to incinerate high-concentration organic waste gas, the high-concentration organic waste gas is first transported into the incinerator 2 through the main pipe for incineration, and the oxygen reduction device 6 arranged on the main pipe, when the oxygen content in the main pipe is high, nitrogen is supplemented to the main pipe to reduce the oxygen content in the main pipe to ensure stable and continuous combustion of the high-concentration organic waste gas, and the non-return device 3 installed on the main pipe prevents backfire, thereby improving the safety of the incineration system of high-concentration organic waste gas provided by the utility model. When the high-concentration organic waste gas is burned, the generated tail gas will be discharged into the waste heat utilization device 7. After the tail gas enters the waste heat utilization device 7, the heat is transferred to the waste heat utilization device 7, and the temperature of the tail gas is also reduced. The cooled tail gas is transported to the spray tower 8 by the first fan 9 for purification, and the harmful substances in the tail gas are removed, so that the tail gas reaches the specified standard before being discharged into the atmosphere to avoid air pollution. Therefore, through the setting of the oxygen reduction device 6 and the non-return device 3, the incineration system of high-concentration organic waste gas provided by the utility model is safer and more practical.

[0061] An optional implementation of this embodiment is as follows: the incineration system further includes an oxygen reduction device 6, wherein:

[0062] The oxygen reduction device 6 is connected to the collecting device 1 and is used to reduce the oxygen content in the collecting device 1. Through the setting of the oxygen reduction device 6, when the oxygen content in the main pipe is too high, the oxygen in the main pipe is reduced by the oxygen reduction device 6 to avoid combustion and explosion in the collecting device 1.

[0063] An optional implementation of this embodiment is as follows: the oxygen reduction device 6 includes a nitrogen pipe 61 and an oxygen detector 62, wherein:

[0064] The collecting device 1 is provided with a nitrogen supply port, and one end of a nitrogen pipe 61 is installed at the nitrogen supply port. The nitrogen pipe 61 is used to transport nitrogen.

[0065] The oxygen detector 62 is installed on the main pipe. Optionally, there are two oxygen detectors 62. By setting up the two oxygen detectors 62, the two oxygen detectors 62 serve as control groups for each other to achieve the purpose of accurately monitoring the oxygen content in the main pipe.

[0066] Through the above structure, the oxygen content in the main pipe is detected in real time by the oxygen detector 62. When it is detected that the oxygen content in the main pipe increases, the nitrogen pipe 61 is connected to supplement nitrogen in the main pipe to reduce the oxygen content. When the oxygen content drops, the nitrogen pipe 61 is closed.

[0067] An optional implementation of this embodiment is as follows: the non-return device 3 includes an exhaust gas compressor 31 and a water seal tank 32, wherein:

[0068] The tail gas compressor 31 is connected to the main pipe. Thus, the tail gas compressor 31 is provided to maintain the pressure difference between the main pipe and the incinerator 2 to prevent flashback.

[0069] The water seal tank 32 is connected to the main pipe. Through the setting of the water seal tank 32, if combustion occurs in the main pipe, the flame enters the water seal tank 32 through the air outlet of the water seal tank 32, but because the pipeline for gas transmission is below the water surface, the flame is prevented from continuing to spread and backfire is avoided.

[0070] Optionally, the check device 3 further includes a proportional regulator 33 and a one-way valve 34, wherein:

[0071] The proportional regulator 33 is installed on the main pipe and is located at the front end of the water seal tank 32. By setting the proportional regulating valve, it is ensured that the organic waste gas is burned under positive pressure in the combustion chamber to prevent the occurrence of flashback.

[0072] The one-way valve 34 is installed on the main pipe. In this way, the one-way valve 34 can prevent gas backflow, thereby reducing the probability of flashback.

[0073] An optional implementation of this embodiment is as follows: the incineration system further includes a waste heat utilization device 7, the waste heat utilization device 7 includes a waste heat boiler 71 and an economizer 72, wherein:

[0074] The waste heat boiler 71 is connected to the incinerator 2. Through the setting of the waste heat boiler 71, when the organic waste gas is burned in the incinerator 2, the generated exhaust gas enters the waste heat boiler 71 connected to the incinerator 2. After the exhaust gas enters the waste heat boiler 71, the water in the waste heat boiler 71 absorbs the heat in the exhaust gas to achieve the purpose of secondary utilization, while also reducing the temperature of the exhaust gas. Optionally, the waste heat boiler 71 is a smoke tube boiler, which has the advantages of fast flow rate and high heat exchange efficiency.

[0075] The economizer 72 is connected to the waste heat boiler 71. Through the setting of the economizer 72, the heat in the exhaust gas is absorbed for a second time, which reduces the temperature of the exhaust gas again and saves energy. At the same time, it prevents the high-temperature exhaust gas from being discharged into the atmosphere to damage the environment.

[0076] An optional implementation of this embodiment is as follows: the incineration system further includes a spray tower 8, wherein:

[0077] The spray tower 8 is connected to the economizer 72. Through the setting of the spray tower 8, when the exhaust gas enters the spray tower 8 from the economizer 72, the exhaust gas is deacidified in the spray tower 8, which not only plays a purification role, but also reduces the temperature of the exhaust gas again, thereby avoiding environmental pollution.

[0078] An optional implementation of this embodiment is as follows: the incineration system further includes a fan 9, wherein:

[0079] The fan 9 is installed between the economizer 72 and the spray tower 8 . The arrangement of the fan 9 facilitates the transportation of the tail gas from the waste heat utilization device 7 into the spray tower 8 .

[0080] An optional implementation of this embodiment is as follows: the incineration system further includes a waste liquid storage tank 10, an infusion pump 20, a spray gun 30 and a burner 40, wherein:

[0081] The waste liquid storage tank 10 is used to store waste liquid.

[0082] The liquid inlet end of the infusion pump 20 is connected to the waste liquid storage tank 10 .

[0083] One end of the spray gun 30 is connected to the liquid outlet end of the infusion pump 20 , and the other end of the spray gun 30 extends into the incinerator 2 .

[0084] The burner 40 is installed on the incinerator 2 and is located on one side of the spray gun 30. In this way, through the setting of the burner 40, not only can the waste liquid be ignited, but the burner 40 can also increase the temperature in the incinerator 2 during the startup phase until the temperature of the incinerator 2 reaches a temperature at which materials can be fed. When the incineration condition in the incinerator 2 is good and the radiant heat energy causes the waste liquid just sprayed into the incinerator 2 to self-ignite, the burner 40 can be turned off.

[0085] Through the above structure, the waste liquid generated in the production is collected in the waste liquid storage tank 10, and then transported to the spray gun 30 through the infusion pump 20, and then atomized by the spray gun 30 and sprayed into the incinerator 2. In this way, by atomizing the waste liquid, it is easier to incinerate it. Therefore, the high-concentration organic waste gas incineration system provided in the embodiment of the utility model can incinerate the waste liquid and save costs.

[0086] An optional implementation of this embodiment is as follows: the incineration system further includes a controller, wherein:

[0087] The controller is electrically connected to the flame detector 4 , the flame arrester 5 , the oxygen reduction device 6 and the proportional regulator 33 through lines.

[0088] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-concentration organic waste gas incineration system, characterized in that: include: A collecting device (1), the collecting device (1) is used to collect the high-concentration organic waste gas; An incinerator (2), wherein the incinerator (2) is connected to the collecting device (1) via a main pipe for conveying the high-concentration organic waste gas, and the incinerator (2) is used to incinerate the organic waste gas; a non-return device (3), the non-return device (3) being installed on the main pipe, the non-return device (3) being used to prevent backfire; A flame detector (4), wherein the flame detector (4) is mounted on the main pipe; A flame arrester (5), wherein the flame arrester (5) is installed on the main pipe.

2. A high-concentration organic waste gas incineration system according to claim 1, characterized in that: The incineration system also includes: An oxygen reduction device (6), the oxygen reduction device (6) is connected to the collection device (1), and the oxygen reduction device (6) is used to reduce the oxygen content in the collection device (1).

3. A high-concentration organic waste gas incineration system according to claim 2, characterized in that: The oxygen reduction device (6) comprises: A nitrogen pipe (61), wherein the collecting device (1) is provided with a nitrogen supply port, one end of the nitrogen pipe (61) is installed at the nitrogen supply port, and the nitrogen pipe (61) is used to transport nitrogen; An oxygen detector (62) is installed on the main pipe.

4. A high-concentration organic waste gas incineration system according to claim 3, characterized in that: The non-return device (3) comprises: An exhaust gas compressor (31), the exhaust gas compressor (31) being in communication with the main pipe; A water seal tank (32), wherein the water seal tank (32) is connected to the main pipe.

5. A high-concentration organic waste gas incineration system according to claim 4, characterized in that: The non-return device (3) further comprises: A proportional regulator (33), the proportional regulator (33) being installed on the main pipe and located at the front end of the water seal tank (32); A one-way valve (34) is installed on the main pipe.

6. The incineration system of high-concentration organic waste gas according to claim 1, characterized in that: The incineration system further comprises a waste heat utilization device (7), wherein the waste heat utilization device (7) comprises: A waste heat boiler (71), wherein the waste heat boiler (71) is connected to the incinerator (2); An economizer (72), wherein the economizer (72) is connected to the waste heat boiler (71).

7. A high-concentration organic waste gas incineration system according to claim 6, characterized in that: The incineration system also includes: A spray tower (8), wherein the spray tower (8) is connected to the economizer (72).

8. A high-concentration organic waste gas incineration system according to claim 7, characterized in that: The incineration system also includes: A fan (9), wherein the fan (9) is installed between the economizer (72) and the spray tower (8).

9. The incineration system of high-concentration organic waste gas according to claim 1, characterized in that: The incineration system also includes: A waste liquid storage tank (10), wherein the waste liquid storage tank (10) is used to store waste liquid; an infusion pump (20), wherein a liquid inlet end of the infusion pump (20) is connected to the waste liquid storage tank (10); a spray gun (30), one end of which is connected to the liquid outlet of the infusion pump (20), and the other end of which extends into the incinerator (2); A burner (40) is installed on the incinerator (2) and is located on one side of the spray gun (30).

10. The high-concentration organic waste gas incineration system according to claim 5, characterized in that: The incineration system also includes: A controller is electrically connected to the flame detector (4), the flame arrester (5), the oxygen reduction device (6) and the proportional regulator (33) through a circuit.

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