Molecular sieve waste gas treatment device

Abstract

The utility model relates to the field of molecular sieve tail gas treatment equipment, in particular to a molecular sieve waste gas treatment device. The molecular sieve waste gas treatment device comprises a filter cylinder and a combustion cylinder, the upper end of the filter cylinder is communicated with a temporary storage cylinder; two sides of the temporary storage cylinder are respectively communicated with a waste gas pipe, a backflushing pipe and an exhaust pipe; a filter assembly is mounted in the filter cartridge, the bottom end of the filter cartridge is communicated with a dust discharge pipe, and a dust discharge valve is mounted on the dust discharge pipe; a combustion assembly is installed in the combustion cylinder and comprises an ignition cylinder, a combustion pipe and a tail gas pipe. According to the molecular sieve waste gas treatment device, the filter cylinder and the combustion cylinder are arranged at the same time, and the filter cylinder is used for filtering waste gas and tail gas exhausted by a molecular sieve and intercepting dust particles contained in the waste gas and tail gas; the combustion cylinder is used for carrying out combustion treatment on the tail gas discharged by the filter cylinder and is used for treating volatile organic compound harmful substances contained in the waste gas; therefore, the tail gas treatment quality can be improved.

Description

Technical Field

[0001] This invention relates to the field of molecular sieve exhaust gas treatment equipment, specifically a molecular sieve waste gas treatment device. Background Technology

[0002] Molecular sieves are adsorbent materials with uniform microporous structures that can selectively adsorb specific substances based on molecular size and polarity. The main components of molecular sieves are mostly crystalline aluminosilicates (such as zeolite molecular sieves), but they can also be synthetic materials such as carbon-based and metal-organic frameworks (MOFs). As highly efficient adsorption and separation materials, molecular sieves play an irreplaceable role in chemical, environmental protection, and energy fields, and their performance optimization and innovative applications will continue to drive technological progress.

[0003] In industrial production, molecular sieves (such as zeolite molecular sieves) are often used in gas separation, drying, adsorption and purification processes. The waste gases that may be generated during their operation generally include volatile organic compounds, dust particles and other acidic gases released from adsorption.

[0004] Currently, the exhaust gas generated during the use of molecular sieves is generally treated by activated carbon with adsorption properties. The activated carbon is filled inside the air filter cartridge. When the exhaust gas flows inside the air filter cartridge, the activated carbon can adsorb and treat the dust particles and volatile organic compounds contained in the flowing exhaust gas.

[0005] The advantage of this method of adsorbing molecular sieve exhaust gas by filling it with activated carbon is its simple structural design. However, the problems and defects are also obvious. For example, dust particles in the molecular sieve exhaust gas can clog the pores of the activated carbon. After long-term use, the activated carbon will lose its air filtration and interception effect and needs to be replaced at intervals, which is quite troublesome. Moreover, the adsorption effect of activated carbon on volatile organic compounds in exhaust gas is generally not good. Some volatile organic compounds still exist in the exhaust gas after it has been adsorbed and filtered by activated carbon, making it difficult to meet the strict air emission standards.

[0006] In view of the problems mentioned above in the background art, the present invention aims to provide a molecular sieve waste gas treatment device. Summary of the Invention

[0007] The purpose of this invention is to provide a molecular sieve waste gas treatment device to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A molecular sieve waste gas treatment device, the molecular sieve waste gas treatment device comprising:

[0010] The filter cartridge is used to filter the exhaust gas discharged from the molecular sieve, to intercept the dust particles contained in the exhaust gas, and the combustion cartridge is used to burn the exhaust gas discharged from the filter cartridge, to remove the volatile organic compounds and harmful substances contained in the exhaust gas.

[0011] The filter cartridge is connected to a temporary storage cylinder at its upper end, and a waste gas pipe, a backwash pipe, and an exhaust pipe are connected to both sides of the temporary storage cylinder, respectively. A filter assembly is installed inside the filter cartridge, and an ash discharge pipe is connected to the bottom end of the filter cartridge. An ash discharge valve is installed on the ash discharge pipe.

[0012] The combustion chamber is equipped with a combustion assembly, which includes an ignition tube, a combustion pipe, and an exhaust pipe. The ignition tube, combustion pipe, and exhaust pipe are connected in sequence. The connection between the ignition tube and the combustion pipe is in a pressurized and flared state. The combustion pipe and the exhaust pipe form an L-shape. The end of the exhaust pipe passes through the outlet of the combustion chamber. An igniter is installed inside the ignition tube, and the outlet of the exhaust pipe is connected to the inside of the ignition tube.

[0013] As a further embodiment of the present invention: an exhaust pipe valve is installed on the exhaust pipe, a backflushing valve is installed on the backflushing pipe, an exhaust valve is installed on the exhaust pipe, and an ash discharge valve is installed on the ash discharge pipe.

[0014] As a further aspect of the present invention: a cavity is formed inside the filter cartridge, and a filter assembly is movably installed inside the cavity.

[0015] As a further aspect of the present invention: the filter assembly includes a filter bag, which is funnel-shaped; wherein the end outlet of the exhaust pipe and the end outlet of the backflushing pipe are both connected to the inside of the filter bag; the end inlet of the exhaust pipe is connected to the inside of the cavity; a stepper motor is installed inside the ash discharge valve, and an electric ball valve is installed at the bottom of the filter bag where the output end of the stepper motor is located.

[0016] As a further aspect of the present invention: a flame arrester is installed on the exhaust pipe, and a dilution fan is connected to one side of the exhaust pipe. The outlet of the dilution fan is connected to the inside of the exhaust pipe through a dilution pipe. A combustion-supporting fan is also connected to one end of the combustion cylinder, and the outlet of the combustion-supporting fan is connected to the inside of the ignition cylinder through a combustion-supporting pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Compared with the current method of adsorbing and treating the exhaust gas generated by molecular sieve operation by filling with activated carbon, the aforementioned molecular sieve exhaust gas treatment device has the following advantages:

[0019] First, by simultaneously setting up a filter cartridge and a combustion chamber, the filter cartridge is used to filter the exhaust gas discharged from the molecular sieve to intercept the dust particles contained in the exhaust gas; while the combustion chamber is used to burn the exhaust gas discharged from the filter cartridge to remove the volatile organic compounds and harmful substances contained in the exhaust gas; thus, the treatment quality of the exhaust gas can be improved.

[0020] 2. When it is necessary to clean the dust adhering to the inner wall surface of the filter bag installed inside the filter cartridge in the later stage, backflow gas is introduced into the filter bag through the backflow pipe to shake off the dust adhering to the inner wall of the filter bag. This enables the filter bag to achieve self-cleaning function and is easy to handle.

[0021] Third, in order to improve the combustion efficiency of the exhaust gas entering the ignition tube, after the exhaust gas enters the ignition tube through the exhaust pipe, the combustion fan is started. The operation of the combustion fan draws in the outside natural air through the combustion pipe and delivers it into the ignition tube. After the air flows into the ignition tube, the contact area between the exhaust gas to be burned and the oxygen in the air can be increased, thereby improving the combustion efficiency of the exhaust gas. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0023] Figure 1 This is a schematic diagram of the structure of a molecular sieve waste gas treatment device according to an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the internal structure of a molecular sieve waste gas treatment device according to an embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the internal structure of the combustion chamber of a molecular sieve waste gas treatment device according to an embodiment of the present invention.

[0026] In the diagram: 1-exhaust gas pipe, 2-exhaust gas pipe valve, 3-temporary storage cylinder, 4-exhaust valve, 5-exhaust pipe, 6-backflush pipe, 7-backflush valve, 8-filter cartridge, 9-ash discharge pipe, 10-ash discharge valve, 11-flame arrester, 12-dilution pipe, 13-dilution fan, 14-combustion fan, 15-combustion pipe, 16-combustion cylinder, 17-exhaust gas pipe, 18-filter bag, 19-electric ball valve, 20-stepper motor, 21-combustion tube, 22-ignition cylinder, 23-igniter. Detailed Implementation

[0027] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] Example

[0029] Please see Figure 1 , Figure 2 and Figure 3 The present invention provides a molecular sieve waste gas treatment device, the molecular sieve waste gas treatment device comprising:

[0030] The filter cartridge 8 and the combustion cylinder 16 are provided. The filter cartridge 8 is used to filter the exhaust gas discharged from the molecular sieve and to intercept the dust particles contained in the exhaust gas. The combustion cylinder 16 is used to burn the exhaust gas discharged from the filter cartridge 8 and to remove the volatile organic compounds and harmful substances contained in the exhaust gas.

[0031] The filter cartridge 8 is connected to a temporary storage cylinder 3 at its upper end, and to two sides of the temporary storage cylinder 3 are respectively connected to an exhaust gas pipe 1, a backflushing pipe 6, and an exhaust pipe 5. A filter assembly is installed inside the filter cartridge 8, and an ash discharge pipe 9 is connected to the bottom of the filter cartridge 8. An ash discharge valve 10 is installed on the ash discharge pipe 9. The exhaust gas pipe 1 is used to guide the exhaust gas discharged from the molecular sieve into the filter cartridge 8 for filtration. The filter assembly installed inside the filter cartridge 8 is used to filter and intercept the incoming exhaust gas, removing dust particles and impurities contained in the exhaust gas. The exhaust pipe 5 is used to discharge the filtered clean air inside the filter cartridge 8. The backflushing pipe 6 is used to introduce backflushing gas into the filter cartridge 8 to backflush and clean the filter assembly installed inside the filter cartridge 8. Finally, the ash discharge pipe 9 is used to centrally discharge the dust particles accumulated inside the filter cartridge 8.

[0032] The combustion chamber 16 is equipped with a combustion assembly, which includes an ignition tube 22, a combustion pipe 21, and an exhaust pipe 17. The ignition tube 22, combustion pipe 21, and exhaust pipe 17 are connected in sequence. The connection between the ignition tube 22 and the combustion pipe 21 is in a pressurized and flared state. The combustion pipe 21 and the exhaust pipe 17 form an L-shape. The end of the exhaust pipe 17 passes through the outlet of the combustion chamber 16. An igniter 23 is installed inside the ignition tube 22, and the outlet of the exhaust pipe 5 is connected to the inside of the ignition tube 22.

[0033] In an embodiment of the present invention, when the molecular sieve exhaust gas treatment device is used, the exhaust gas generated by the molecular sieve enters the filter cartridge 8 through the exhaust pipe 1. The filter assembly installed inside the filter cartridge 8 is used to filter and intercept the exhaust gas entering the filter cartridge 8, and to remove solid impurity particles contained in the exhaust gas. The filtered exhaust gas is transported to the ignition tube 22 installed inside the combustion tube 16 through the exhaust pipe 5. After the igniter 23 is started, the igniter 23 ignites and burns the entering exhaust gas, removing volatile organic harmful substances contained in the exhaust gas.

[0034] Please see Figure 1 In one embodiment of the present invention, an exhaust pipe valve 2 is installed on the exhaust pipe 1, a backflushing valve 7 is installed on the backflushing pipe 6, an exhaust valve 4 is installed on the exhaust pipe 5, and an ash discharge valve 10 is installed on the ash discharge pipe 9.

[0035] The exhaust pipe valve 2 installed on the exhaust pipe 1 is used to control the flow rate of the exhaust gas discharged from the molecular sieve. The backwash valve 7 installed on the backwash pipe 6 is used to control the flow rate of the backwash gas entering the filter cartridge 8. The exhaust valve 4 installed on the exhaust pipe 5 is used to control the flow rate of the filtered gas. The ash discharge valve 10 is used to control the opening and closing status of the ash discharge pipe 9.

[0036] Please see Figure 1 and Figure 2 In one embodiment of the present invention, the filter cartridge 8 forms a cavity inside, and a filter assembly is movably installed inside the cavity; the filter assembly includes a filter bag 18, which is funnel-shaped; wherein the end outlet of the exhaust pipe 1 and the end outlet of the backflushing pipe 6 are both connected to the inside of the filter bag 18; the end inlet of the exhaust pipe 5 is connected to the inside of the cavity; a stepper motor 20 is installed inside the ash discharge valve 10, and an electric ball valve 19 is installed at the bottom of the filter bag 18 at the output end of the stepper motor 20.

[0037] In an embodiment of the present invention, the exhaust gas generated during the operation of the molecular sieve enters the interior of the filter bag 18 through the exhaust pipe 1. The filter bag 18 is used to filter and trap the incoming exhaust gas, trapping solid particulate impurities contained in the exhaust gas. After being filtered by the filter bag 18, the exhaust gas enters the cavity formed inside the filter cylinder 8 and is finally discharged through the exhaust pipe 5.

[0038] When it is necessary to clean the dust adhering to the inner wall surface of the filter bag 18 later, backflow gas is introduced into the filter bag 18 through the backflow pipe 6 to shake off the dust adhering to the inner wall of the filter bag 18. Finally, the stepper motor 20 is started to output kinetic energy and push the electric ball valve 19 to rotate, opening the notch at the bottom of the filter bag 18 to discharge the dust accumulated inside the filter bag 18.

[0039] Please see Figure 1 and Figure 3 In one embodiment of the present invention, a flame arrester 11 is also installed on the exhaust pipe 5. The flame arrester 11 is used to make the exhaust gas inside the exhaust pipe 5 flow in one direction and prevent the exhaust gas from flowing in the opposite direction. A dilution fan 13 is also connected to one side of the exhaust pipe 5. The outlet of the dilution fan 13 is connected to the inside of the exhaust pipe 5 through a dilution pipe 12. By starting the dilution fan 13, the outside airflow can be introduced into the inside of the exhaust pipe 5 and mixed with the exhaust gas flowing inside the exhaust pipe 5 to dilute the exhaust gas. In addition, a combustion-supporting fan 14 is also connected to one end of the combustion tube 16. The outlet of the combustion-supporting fan 14 is connected to the inside of the ignition tube 22 through a combustion-supporting pipe 15.

[0040] In an embodiment of the present invention, in order to improve the combustion efficiency of the exhaust gas entering the ignition tube 22, after the exhaust gas enters the ignition tube 22 through the exhaust pipe 5, the combustion fan 14 is started. The combustion fan 14 operates to draw in the outside natural air through the combustion pipe 15 and deliver it into the ignition tube 22. After the air flows into the ignition tube 22, the contact area between the exhaust gas to be burned and the oxygen in the air can be increased, thereby improving the combustion efficiency of the exhaust gas.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A molecular sieve waste gas treatment device, comprising: A filter cartridge (8) for filtering the exhaust gas from the molecular sieve and for trapping dust particles contained in the exhaust gas, and a combustion chamber (16) for burning the exhaust gas from the filter cartridge (8) and for removing volatile organic compounds and harmful substances contained in the exhaust gas; characterized in that: The upper end of the filter cylinder (8) is connected to the temporary storage cylinder (3), and the two sides of the temporary storage cylinder (3) are respectively connected to the exhaust pipe (1), the backwash pipe (6) and the exhaust pipe (5); the filter cylinder (8) is equipped with a filter assembly, and the bottom end of the filter cylinder (8) is connected to the ash discharge pipe (9), and the ash discharge pipe (9) is equipped with an ash discharge valve (10). The combustion chamber (16) is equipped with a combustion assembly, which includes an ignition tube (22), a combustion pipe (21), and an exhaust pipe (17). The ignition tube (22), the combustion pipe (21), and the exhaust pipe (17) are connected in sequence. The ignition tube (22) and the combustion pipe (21) are connected in a pressurized and flared state. The combustion pipe (21) and the exhaust pipe (17) form an L-shape. The end of the exhaust pipe (17) passes through the outlet of the combustion chamber (16). An igniter (23) is installed inside the ignition tube (22), and the outlet of the exhaust pipe (5) is connected to the inside of the ignition tube (22).

2. The molecular sieve waste gas treatment device according to claim 1, characterized in that: An exhaust pipe valve (2) is installed on the exhaust pipe (1), a backflushing valve (7) is installed on the backflushing pipe (6), an exhaust valve (4) is installed on the exhaust pipe (5), and an ash discharge valve (10) is installed on the ash discharge pipe (9).

3. The molecular sieve waste gas treatment device according to claim 1, characterized in that: The filter cartridge (8) has a cavity inside, and a filter assembly is movably installed inside the cavity.

4. The molecular sieve waste gas treatment device according to claim 3, characterized in that: The filter assembly includes a filter bag (18) which is funnel-shaped; the end outlet of the exhaust pipe (1) and the end outlet of the backflushing pipe (6) are both connected to the inside of the filter bag (18); the end inlet of the exhaust pipe (5) is connected to the inside of the cavity; a stepper motor (20) is installed inside the ash discharge valve (10), and an electric ball valve (19) is installed at the bottom of the filter bag (18) where the output end of the stepper motor (20) is located.

5. The molecular sieve waste gas treatment device according to claim 1, characterized in that: A flame arrester (11) is installed on the exhaust pipe (5). A dilution fan (13) is also connected to one side of the exhaust pipe (5). The outlet of the dilution fan (13) is connected to the inside of the exhaust pipe (5) through a dilution pipe (12). A combustion-supporting fan (14) is also connected to one end of the combustion tube (16). The outlet of the combustion-supporting fan (14) is connected to the inside of the ignition tube (22) through a combustion-supporting pipe (15).

Images