Organic waste gas purification treatment device for furfural production

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a furfural production organic waste gas purification treatment device which can be used for carrying out cooling, deacidification and dehydration treatment on waste gas when the waste gas is treated, reduces secondary pollution, and is good in waste gas treatment effect, convenient to use and high in practicability. Comprising a waste gas delivery pipe; the device further comprises an induced draft fan, a cooling mechanism, a deacidification mechanism and a dehydration mechanism, the output end of the waste gas conveying pipe is communicated with the cooling mechanism, the cooling mechanism has a heat recovery function, the cooling mechanism is connected with the deacidification mechanism, the deacidification mechanism has an acid gas removal function, the dehydration mechanism is connected with the dehydration mechanism, and the dehydration mechanism has a dehydration function. The output end of the dewatering mechanism is connected with the induced draft fan.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a device for purifying and treating organic waste gas produced by furfural production. Background Art

[0002] Furfural is a compound that is mainly used as an industrial solvent and has a wide range of applications in the chemical industry. A large amount of high-temperature organic waste gas will be generated during the production of furfural, and these waste gases contain some acidic gases and water vapor. These waste gases will not only cause environmental pollution, but also affect the health of workers, so it is necessary to use a waste gas treatment device to purify these waste gases. At present, traditional organic waste gas treatment methods mainly include activated carbon adsorption and biological treatment methods. These methods can treat the organic waste gas generated by furfural during production to a certain extent. However, the high temperature in the waste gas using activated carbon adsorption and biological treatment methods can easily damage the gas pipeline and waste gas treatment mechanism, which is inconvenient to use. Therefore, a waste gas treatment mechanism that can cool the waste gas and is easy to use is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a furfural production organic waste gas purification treatment device which can cool, remove acid and dehydrate the waste gas during treatment, thereby reducing secondary pollution, having good waste gas treatment effect, being easy to use and having high practicality.

[0004] The utility model discloses a device for purifying and treating organic waste gas from furfural production, comprising a waste gas conveying pipe; an induced draft fan, a cooling mechanism, an acid removal mechanism and a dehydration mechanism; the output end of the waste gas conveying pipe is connected with the cooling mechanism, the cooling mechanism has the function of recovering heat, the cooling mechanism is connected with the acid removal mechanism, the acid removal mechanism has the function of removing acidic gas, the acid removal mechanism is connected with the dehydration mechanism, the dehydration mechanism has the function of dehydration, and the output end of the dehydration mechanism is connected with the induced draft fan; the output end of the induced draft fan is connected with an external combustion boiler, when treating the organic waste gas in the process of furfural production, the waste gas is firstly input into the cooling mechanism through the waste gas conveying pipe for cooling, so as to reduce the temperature of the waste gas. And reduce the volume of waste gas, then pass the cooled waste gas into the acid removal mechanism to remove acid gas, then pass the deacidified waste gas into the dehydration mechanism for dehydration and demisting, dry the organic waste gas, then pass the dried organic waste gas into the combustion boiler through the induced draft fan for combustion; in the process of treating the waste gas, the waste gas can be cooled, dehydrated and acid-base neutralized, thus avoiding damage to the pipeline caused by high-temperature waste gas, and at the same time reducing the acid gas contained in the waste gas, thus avoiding secondary pollution to the environment caused by the acid gas, and at the same time not using a catalyst, thus avoiding damage to the environment caused by the catalyst, having good waste gas treatment effect, being easy to use and having high practicality.

[0005] Preferably, the cooling mechanism includes a heat exchange mechanism, a cooling spray tower, a water pipe, a spray heat exchanger, a delivery pipe and a spray pipe. A chamber is arranged in the cooling spray tower. The water pipe is connected to the lower part of the chamber of the cooling spray tower. The output end of the water pipe is connected to the spray heat exchanger. The output end of the spray heat exchanger is connected to the delivery pipe. The output end of the delivery pipe is connected to the spray pipe. The spray pipe is provided with multiple groups of nozzles, and the multiple groups of nozzles are all located at the upper part of the chamber of the cooling spray tower. The heat exchange mechanism is connected to the upper part of the chamber of the cooling spray tower; the spray heat exchanger is provided with a delivery pump, which is connected to the delivery pipe. After the high-temperature organic waste gas is passed into the chamber of the cooling spray tower, it is blown Turn on the delivery pump to spray the water in the spray heat exchanger into the chamber of the cooling spray tower through the delivery pipe and the spray pipe in turn, so that the water contacts the high-temperature exhaust gas to cool the exhaust gas and condense the substances with higher boiling points in the exhaust gas into liquid and fall into the water in the chamber of the cooling spray tower, thereby reducing the volume of the exhaust gas. After that, the water enters the spray heat exchanger through the water delivery pipe at the bottom of the chamber of the cooling spray tower to cool down and then circulate for use. After that, the cooled organic waste gas enters the heat exchange mechanism to cool down again, thereby reducing the volume of the gas again and reducing the load on subsequent exhaust gas treatment devices. At the same time, it avoids damage to subsequent devices by high-temperature exhaust gas. It is easy to use and highly practical.

[0006] Preferably, the heat exchange mechanism includes an air pipe and a gas-liquid heat exchanger, the input end of the air pipe is connected to the upper part of the cooling spray tower chamber, and the output end of the air pipe is connected to the gas-liquid heat exchanger; the organic waste gas after spray cooling enters the gas-liquid heat exchanger through the air pipe for further cooling, further reducing the volume of the waste gas and reducing the processing load of the subsequent waste gas treatment mechanism.

[0007] Preferably, there are multiple groups of spray pipes, and all of the multiple groups of spray pipes are connected to the delivery pipe; through the above arrangement, the multiple groups of spray pipes can evenly spray water in the chamber of the cooling spray tower to contact the organic waste gas, which can evenly cool the organic waste gas and have a better cooling effect on the organic waste gas.

[0008] Preferably, the acid removal mechanism includes an output pipe and an alkali washing tower, and the output end of the gas-liquid heat exchanger is connected to the alkali washing tower through the output pipe; the organic waste gas that has been cooled in the gas-liquid heat exchanger enters the alkali washing tower through the output pipe to remove the acid gas, thereby preventing the acid gas from damaging the environment and facilitating the deacidification of the gas.

[0009] Preferably, the dehydration mechanism includes an air supply pipe, a dehydration tower and an exhaust pipe. The output end of the alkali washing tower is connected to the dehydration tower through the air supply pipe, and the output end of the dehydration tower is connected to the induced draft fan through the exhaust pipe. The organic waste gas deacidified in the alkali washing tower enters the dehydration tower through the air supply pipe to remove water mist and steam, so that the organic waste gas is dried. The dried organic waste gas enters the external combustion boiler through the exhaust pipe and the induced draft fan for combustion. By drying the organic waste gas, the combustion treatment of the organic waste gas is facilitated, the combustion effect of the organic waste gas is improved, and it is easy to use and highly practical.

[0010] Compared with the prior art, the utility model has the following beneficial effects: when treating waste gas, the waste gas can be cooled, deacidified and dehydrated, thereby reducing secondary pollution, having a good waste gas treatment effect, being easy to use and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a main structural schematic diagram of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the cooling mechanism;

[0013] Figure 3 It is a structural schematic diagram of the acid removal mechanism;

[0014] Figure 4 It is a schematic diagram of the dehydration mechanism structure.

[0015] Markings in the attached figure: 1. exhaust gas conveying pipe; 2. induced draft fan; 3. cooling spray tower; 4. water pipe; 5. spray tower heat exchanger; 6. conveying pipe; 7. spray pipe; 8. gas pipe; 9. gas-liquid heat exchanger; 10. output pipe; 11. alkali washing tower; 12. air supply pipe; 13. dehydration tower; 14. exhaust pipe. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model 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 utility model more thorough and comprehensive.

[0017] Example

[0018] like Figures 1 to 4The utility model discloses a device for purifying and treating organic waste gas for the production of aldehyde, comprising a waste gas conveying pipe 1, an induced draft fan 2, a cooling mechanism, an acid removal mechanism and a dehydration mechanism. The output end of the waste gas conveying pipe 1 is connected to the cooling mechanism, the cooling mechanism has the function of recovering heat, the cooling mechanism is connected to the acid removal mechanism, the acid removal mechanism has the function of removing acidic gas, the acid removal mechanism is connected to the dehydration mechanism, the dehydration mechanism has the dehydration function, and the output end of the dehydration mechanism is connected to the induced draft fan 2; the output end of the induced draft fan 2 is connected to an external combustion boiler. When treating the organic waste gas in the production process of aldehyde, the waste gas is first input into the cooling mechanism through the waste gas conveying pipe 1 to reduce the temperature of the waste gas. degree, and reduce the volume of the waste gas, then the cooled waste gas is passed into the deacidification mechanism to remove the acidic gas, and then the deacidified waste gas is passed into the dehydration mechanism for dehydration and demisting, so that the organic waste gas is dried, and then the dried organic waste gas is passed into the combustion boiler through the induced draft fan 2 for combustion; in the process of treating the waste gas, the waste gas can be cooled, dehydrated and acid-base neutralized, thus avoiding damage to the pipeline caused by high-temperature waste gas, and at the same time reducing the acidic gas contained in the waste gas, thus avoiding secondary pollution to the environment caused by the acidic gas, and at the same time not using a catalyst, thus avoiding damage to the environment caused by the catalyst, having a good waste gas treatment effect, being easy to use and having high practicality.

[0019] like Figure 1 and Figure 2 The cooling mechanism includes a heat exchange mechanism, a cooling spray tower 3, a water pipe 4, a spray heat exchanger 5, a delivery pipe 6 and a spray pipe 7. A chamber is arranged in the cooling spray tower 3. The water pipe 4 is connected to the lower part of the chamber of the cooling spray tower 3. The output end of the water pipe 4 is connected to the spray heat exchanger 5. The output end of the spray heat exchanger 5 is connected to the delivery pipe 6. The output end of the delivery pipe 6 is connected to the spray pipe 7. The spray pipe 7 is provided with multiple groups of nozzles, and the multiple groups of nozzles are located at the upper part of the chamber of the cooling spray tower 3. The heat exchange mechanism is connected to the upper part of the chamber of the cooling spray tower 3; the spray heat exchanger 5 is provided with a delivery pump, which is connected to the delivery pipe 6. When the high-temperature organic waste gas is passed to the chamber of the cooling spray tower 3, the heat exchange mechanism is connected to the upper part of the chamber of the cooling spray tower 3. After that, turn on the delivery pump to spray the water in the spray heat exchanger 5 into the chamber of the cooling spray tower 3 through the delivery pipe 6 and the spray pipe 7 in turn, so that the water contacts the high-temperature exhaust gas to cool the exhaust gas, and at the same time, condenses the substances with higher boiling points in the exhaust gas into liquid and falls into the water in the chamber of the cooling spray tower 3, thereby reducing the volume of the exhaust gas. After that, the water enters the spray heat exchanger 5 through the water delivery pipe 4 at the lower part of the chamber of the cooling spray tower 3 to cool down and then circulate for use. After that, the cooled organic waste gas enters the heat exchange mechanism to cool down again, thereby reducing the volume of the gas again, reducing the load of the subsequent exhaust gas treatment device, and at the same time avoiding the high-temperature exhaust gas from damaging the subsequent device again. It is easy to use and has high practicality.

[0020] The heat exchange mechanism includes an air pipe 8 and a gas-liquid heat exchanger 9. The input end of the air pipe 8 is connected to the upper part of the chamber of the cooling spray tower 3, and the output end of the air pipe 8 is connected to the gas-liquid heat exchanger 9. The organic waste gas after spray cooling enters the gas-liquid heat exchanger 9 through the air pipe 8 to cool down again, further reducing the volume of the waste gas and reducing the processing load of the subsequent waste gas treatment mechanism. The number of the spray pipes 7 is multiple groups, and the multiple groups of spray pipes 7 are all connected to the delivery pipe 6.

[0021] like Figure 1 and Figure 3 The acid removal mechanism includes an output pipe 10 and an alkali washing tower 11. The output end of the gas-liquid heat exchanger 9 is connected to the alkali washing tower 11 through the output pipe 10; the organic waste gas that has been cooled in the gas-liquid heat exchanger 9 enters the alkali washing tower 11 through the output pipe 10 to remove the acid gas, thereby preventing the acid gas from damaging the environment and facilitating the deacidification of the gas.

[0022] like Figure 4 The dehydration mechanism includes an air supply pipe 12, a dehydration tower 13 and an exhaust pipe 14. The output end of the alkali washing tower 11 is connected with the dehydration tower 13 through the air supply pipe 12, and the output end of the dehydration tower 13 is connected with the induced draft fan 2 through the exhaust pipe 14; the organic waste gas deacidified in the alkali washing tower 11 enters the dehydration tower 13 through the air supply pipe 12 to remove water mist and steam, so that the organic waste gas is dried, and the dried organic waste gas enters the external combustion boiler through the exhaust pipe 14 and the induced draft fan 2 for combustion; by drying the organic waste gas, the combustion treatment of the organic waste gas is facilitated, the combustion effect of the organic waste gas is improved, and it is easy to use and highly practical.

[0023] In summary, the main beneficial effects of the utility model are:

[0024] 1. The waste gas treatment effect is good, reducing secondary pollution.

[0025] 2. When treating waste gas, it can effectively reduce the volume of waste gas, remove acidic substances in organic waste gas, reduce secondary pollution, and reduce energy consumption.

[0026] The waste gas conveying pipe 1, induced draft fan 2, cooling spray tower 3, spray heat exchanger 5, gas-liquid heat exchanger 9, alkali washing tower 11 and dehydration tower 13 of the furfural production organic waste gas purification treatment device of the utility model are all purchased on the market, and technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A device for purifying and treating organic waste gas from furfural production, comprising a waste gas delivery pipe (1); characterized in that: It also includes an induced draft fan (2), a cooling mechanism, an acid removal mechanism and a dehydration mechanism. The output end of the waste gas conveying pipe (1) is connected to the cooling mechanism. The cooling mechanism has a function of recovering heat. The cooling mechanism is connected to the acid removal mechanism. The acid removal mechanism has a function of removing acidic gas. The acid removal mechanism is connected to the dehydration mechanism. The dehydration mechanism has a dehydration function. The output end of the dehydration mechanism is connected to the induced draft fan (2).

2. The furfural production organic waste gas purification treatment device according to claim 1, characterized in that: The cooling mechanism comprises a heat exchange mechanism, a cooling spray tower (3), a water pipe (4), a spray heat exchanger (5), a delivery pipe (6) and a spray pipe (7); a chamber is arranged in the cooling spray tower (3); the water pipe (4) is connected to the lower part of the chamber of the cooling spray tower (3); the output end of the water pipe (4) is connected to the spray heat exchanger (5); the output end of the spray heat exchanger (5) is connected to the delivery pipe (6); the output end of the delivery pipe (6) is connected to the spray pipe (7); a plurality of groups of nozzles are arranged on the spray pipe (7); the plurality of groups of nozzles are all located at the upper part of the chamber of the cooling spray tower (3); and the heat exchange mechanism is connected to the upper part of the chamber of the cooling spray tower (3).

3. The furfural production organic waste gas purification treatment device according to claim 2, characterized in that: The heat exchange mechanism comprises an air delivery pipe (8) and a gas-liquid heat exchanger (9); the input end of the air delivery pipe (8) is connected to the upper part of the chamber of the cooling spray tower (3), and the output end of the air delivery pipe (8) is connected to the gas-liquid heat exchanger (9).

4. The furfural production organic waste gas purification treatment device according to claim 2, characterized in that: The number of the spray pipes (7) is multiple groups, and the multiple groups of spray pipes (7) are all connected to the delivery pipe (6).

5. The furfural production organic waste gas purification treatment device according to claim 3, characterized in that: The acid removal mechanism comprises an output pipe (10) and an alkali washing tower (11), and the output end of the gas-liquid heat exchanger (9) is connected to the alkali washing tower (11) via the output pipe (10).

6. The furfural production organic waste gas purification treatment device according to claim 5, characterized in that: The dehydration mechanism comprises an air supply pipe (12), a dehydration tower (13) and an exhaust pipe (14); the output end of the alkali washing tower (11) is connected to the dehydration tower (13) via the air supply pipe (12), and the output end of the dehydration tower (13) is connected to the induced draft fan (2) via the exhaust pipe (14).

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