Tail gas recovery device for processing autotrophic nitrogen removal filler

Abstract

The utility model relates to the technical field of autotrophic nitrogen removal fillers, and discloses a tail gas recovery device for autotrophic nitrogen removal filler processing, which comprises a sulfur condenser, a gas inlet pipe is arranged at the upper part of one side wall of the sulfur condenser, the middle part of the upper end of the sulfur condenser is connected with an exhaust pipe through a flange, and a filter head is arranged at the periphery of the upper end of the exhaust pipe. An activated carbon filter element is arranged in the filter head, and the lower end of the sulfur condenser is connected with a first connecting pipe through a flange. The upper end, the lower end and the filter screen are arranged, so that industrial sulfides flowing to the liquid storage tank from the sulfur condenser can be filtered, and particulate matters such as dust are prevented from entering the liquid storage tank; the lower end head can be separated from the upper end head, so that the filter screen can be conveniently detached to facilitate cleaning and maintenance; and through the arrangement of a return pipe and an exhaust fan, gas escaping from the liquid storage tank can be sucked into the gas inlet pipe and is treated by the sulfur condenser again, so that the tail gas is recycled more thoroughly.

Description

Technical Field

[0001] The utility model belongs to the technical field of autotrophic denitrification fillers, in particular to a tail gas recovery device for processing autotrophic denitrification fillers. Background Art

[0002] Biological denitrification is the process by which organic nitrogen and ammoniacal nitrogen in wastewater are converted into nitrogen gas through ammoniation, nitrification, and denitrification, all under the combined action of microorganisms. It is economical, effective, easy to operate, and has no secondary pollution, making it a widely recognized method with promising development prospects. Autotrophic denitrification fillers are the primary carriers used in biological denitrification.

[0003] The autotrophic denitrification filler will produce sulfur-containing gas during the processing. The direct discharge of these gases will cause air pollution. For this reason, an exhaust gas recovery device for the processing of autotrophic denitrification filler is proposed here. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an exhaust gas recovery device for processing autotrophic denitrification fillers, which effectively solves the problem of being difficult to completely treat during the processing of the prior autotrophic denitrification fillers.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an exhaust gas recovery device for processing autotrophic denitrification filler, comprising a sulfur condenser, an air inlet pipe is provided on the upper part of one side wall of the sulfur condenser, an exhaust pipe is connected to the middle part of the upper end of the sulfur condenser through a flange, a filter head is provided on the periphery of the upper end of the exhaust pipe, an activated carbon filter element is provided in the filter head, the lower end of the sulfur condenser is connected to a first connecting pipe through a flange, an upper end head is provided on the periphery of the lower end of the first connecting pipe, a lower end head is provided at the lower end of the upper end head, a filter screen is provided between the upper end head and the lower end head, a second connecting pipe is provided at the middle part of the lower end of the lower end head, a liquid storage tank is provided at the lower end of the second connecting pipe, a return pipe is connected to the upper part of one side wall of the liquid storage tank through a flange, the upper end of the return pipe is connected to the air inlet pipe, an exhaust fan is provided on the return pipe, and a drain pipe is provided at the lower part of the other side wall of the liquid storage tank.

[0006] Preferably, the air inlet pipe is connected to the side wall of the sulfur condenser through a flange, the filter head is connected to the upper end of the exhaust pipe through a thread, and the activated carbon filter element is clamped between the upper end of the exhaust pipe and the top end of the filter head. The sulfur-containing tail gas generated during the processing of the autotrophic denitrification filler will be sent into the sulfur condenser through the air inlet pipe by the exhaust equipment. The sulfur condenser will convert the sulfur-containing gas during the period into liquid sulfur for recovery. After recovery, the remaining gas will enter the filter head through the exhaust pipe, be filtered by the activated carbon filter element, and then be discharged.

[0007] Preferably, the upper end head is connected to the first connecting pipe via a threaded connection, a sealing ring is clamped between the upper end head and the first connecting pipe, the lower end of the upper end head is connected to the upper end of the lower end head via a threaded connection, and the liquid sulfur in the sulfur condenser enters the liquid storage tank for storage through the first connecting pipe, the upper end head, the lower end head and the second connecting pipe.

[0008] Preferably, a sealing ring is clamped between the upper end head and the lower end head, the filter screen is clamped between the upper end head and the lower end head, the middle part of the lower end of the lower end head is connected to the upper end of the second connecting pipe through a threaded connection, and the lower end of the second connecting pipe is connected to the middle part of the upper end of the liquid storage tank through a flange, and the liquid sulfur in the sulfur condenser will be filtered by the filter screen when passing through the upper end head and the lower end head.

[0009] Preferably, the exhaust fan is connected to the return pipe through a flange, the exhaust direction of the exhaust fan is from bottom to top, the upper end of the return pipe is connected to the lower end of the intake pipe through a flange, and when the exhaust fan is working, the gas escaping from the liquid storage tank will be sucked into the intake pipe, and then processed by the sulfur condenser again, so that the tail gas can be recovered more thoroughly.

[0010] Preferably, the drain pipe is connected to the side wall of the liquid storage tank via a flange. After the valve on the drain pipe is opened, the liquid sulfide in the liquid storage tank will be discharged through the drain pipe for reuse.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] In the tail gas recovery device for processing autotrophic denitrification filler, an upper end head, a lower end head and a filter screen are provided so that the sulfide flowing from the sulfur condenser to the liquid storage tank can be filtered to prevent dust and other particulate matter from entering the liquid storage tank; the lower end head can be separated from the upper end head, so that the filter screen can be easily removed for cleaning and maintenance; the provision of a reflux pipe and an exhaust fan can draw the gas escaping from the liquid storage tank into the air inlet pipe, and then pass through the sulfur condenser for treatment again, so that the tail gas can be recovered more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a front cross-sectional view of the filter head in the present utility model;

[0016] Figure 3 It is a front cross-sectional view of the upper end and the lower end of the utility model;

[0017] In the figure: 1. Sulfur condenser; 2. Air inlet pipe; 3. Exhaust pipe; 4. Filter head; 5. Activated carbon filter element; 6. First connecting pipe; 7. Upper end; 8. Lower end; 9. Filter screen; 10. Second connecting pipe; 11. Liquid storage tank; 12. Return pipe; 13. Exhaust fan; 14. Drain pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In this embodiment, Figure 1-3 The utility model includes a sulfur condenser 1, an air inlet pipe 2 is provided on the upper part of one side wall of the sulfur condenser 1, an exhaust pipe 3 is connected to the middle part of the upper end of the sulfur condenser 1 through a flange, a filter head 4 is provided on the periphery of the upper end of the exhaust pipe 3, an activated carbon filter element 5 is provided in the filter head 4, the lower end of the sulfur condenser 1 is connected to a first connecting pipe 6 through a flange, an upper end head 7 is provided on the periphery of the lower end of the first connecting pipe 6, a lower end head 8 is provided at the lower end of the upper end head 7, a filter screen 9 is provided between the upper end head 7 and the lower end head 8, a second connecting pipe 10 is provided in the middle part of the lower end of the lower end head 8, a liquid storage tank 11 is provided at the lower end of the second connecting pipe 10, an upper part of one side wall of the liquid storage tank 11 is connected to a return pipe 12 through a flange, the upper end of the return pipe 12 is connected to the air inlet pipe 2, an exhaust fan 13 is provided on the return pipe 12, and a drain pipe 14 is provided on the lower part of the other side wall of the liquid storage tank 11.

[0020] Among them, the air inlet pipe 2 is connected to the side wall of the sulfur condenser 1 through a flange, the filter head 4 is connected to the upper end of the exhaust pipe 3 through a threaded connection, and the activated carbon filter element 5 is clamped between the upper end of the exhaust pipe 3 and the top end of the filter head 4. The sulfur-containing tail gas generated during the processing of the autotrophic denitrification filler will be sent into the sulfur condenser 1 through the air inlet pipe 2 by the exhaust equipment. The sulfur condenser 1 will convert the sulfur-containing gas during the period into liquid sulfur for recovery. After recovery, the remaining gas will enter the filter head 4 through the exhaust pipe 3, be filtered by the activated carbon filter element 5, and then be discharged.

[0021] Among them, the upper end head 7 is connected to the first connecting pipe 6 by a thread, and a sealing ring is clamped between the upper end head 7 and the first connecting pipe 6. The lower end of the upper end head 7 is connected to the upper end of the lower end head 8 by a thread. The liquid sulfur in the sulfur condenser 1 will pass through the first connecting pipe 6, the upper end head 7, the lower end head 8 and the second connecting pipe 10 into the liquid storage tank 11 for storage. A sealing ring is clamped between the upper end head 7 and the lower end head 8. The filter screen 9 is clamped between the upper end head 7 and the lower end head 8. The middle part of the lower end of the lower end head 8 is connected to the upper end of the second connecting pipe 10 by a thread, and the lower end of the second connecting pipe 10 is connected to the middle part of the upper end of the liquid storage tank 11 by a flange. The liquid sulfur in the sulfur condenser 1 will be filtered by the filter screen 9 when passing through the upper end head 7 and the lower end head 8. When the filter screen 9 needs to be cleaned and maintained, the lower end head 8 can be rotated downward to separate the lower end head 8 from the upper end head 7, so that the filter screen 9 can be taken out for cleaning and maintenance.

[0022] Among them, the exhaust fan 13 is connected to the return pipe 12 through a flange, the exhaust direction of the exhaust fan 13 is from bottom to top, the upper end of the return pipe 12 is connected to the lower end of the intake pipe 2 through a flange, and the exhaust fan 13 will suck the gas escaping from the liquid storage tank 11 into the intake pipe 2 when working, and then pass through the sulfur condenser 1 for processing again, so that the tail gas can be recovered more thoroughly. The drain pipe 14 is connected to the side wall of the liquid storage tank 11 through a flange. After the valve on the drain pipe 14 is opened, the liquid sulfide in the liquid storage tank 11 will be discharged through the drain pipe 14.

[0023] Working principle: The sulfur condenser 1 uses an external power supply and is controlled by an external control device to work. The sulfur-containing tail gas generated during the processing of the autotrophic denitrification filler will be sent into the sulfur condenser 1 through the air inlet pipe 2 by the exhaust equipment. The sulfur condenser 1 will convert the sulfur-containing gas during the period into liquid sulfur for recovery. After recovery, the remaining gas will enter the filter head 4 through the exhaust pipe 3, be filtered by the activated carbon filter element 5 and then discharged. The liquid sulfur in the sulfur condenser 1 will enter the liquid storage tank 11 through the first connecting pipe 6, the upper end 7, the lower end 8 and the second connecting pipe 10 for storage. In this process, the liquid sulfide will be filtered by the filter mesh 9. When working, the exhaust fan 13 will suck the gas escaping from the liquid storage tank 11 into the air inlet pipe 2, and then be processed by the sulfur condenser 1 again to make the tail gas be recovered more thoroughly. After the valve on the drain pipe 14 is opened, the liquid sulfide in the liquid storage tank 11 will be discharged through the drain pipe 14 for reuse.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas recovery device for processing autotrophic denitrification fillers, comprising a sulfur condenser (1), characterized in that: An air inlet pipe (2) is provided at the upper portion of one side wall of the sulfur condenser (1), an exhaust pipe (3) is connected to the middle portion of the upper end of the sulfur condenser (1) via a flange, a filter head (4) is provided on the periphery of the upper end of the exhaust pipe (3), an activated carbon filter element (5) is provided in the filter head (4), a first connecting pipe (6) is connected to the lower end of the sulfur condenser (1) via a flange, an upper end head (7) is provided on the periphery of the lower end of the first connecting pipe (6), a lower end head (8) is provided at the lower end of the upper end head (7), and the upper end head ( 7) and the lower end head (8), a filter screen (9) is provided between the lower end head (8), a second connecting pipe (10) is provided in the middle of the lower end of the lower end head (8), a liquid storage tank (11) is provided at the lower end of the second connecting pipe (10), a return pipe (12) is connected to the upper part of one side wall of the liquid storage tank (11) through a flange, the upper end of the return pipe (12) is connected to the air inlet pipe (2), an exhaust fan (13) is provided on the return pipe (12), and a drain pipe (14) is provided at the lower part of the other side wall of the liquid storage tank (11).

2. The tail gas recovery device for autotrophic denitrification filler processing according to claim 1, characterized in that: The air inlet pipe (2) is connected to the side wall of the sulfur condenser (1) via a flange, the filter head (4) is connected to the upper end of the exhaust pipe (3) via a thread, and the activated carbon filter element (5) is clamped between the upper end of the exhaust pipe (3) and the inner top end of the filter head (4).

3. The tail gas recovery device for autotrophic denitrification filler processing according to claim 1, characterized in that: The upper end head (7) is connected to the first connecting pipe (6) through a threaded connection, a sealing ring is clamped between the upper end head (7) and the first connecting pipe (6), and the lower end of the upper end head (7) is connected to the upper end of the lower end head (8) through a threaded connection.

4. The tail gas recovery device for autotrophic denitrification filler processing according to claim 1, characterized in that: A sealing ring is clamped between the upper end head (7) and the lower end head (8), and the filter screen (9) is clamped between the upper end head (7) and the lower end head (8). The middle part of the lower end of the lower end head (8) is connected to the upper end of the second connecting pipe (10) through a thread, and the lower end of the second connecting pipe (10) is connected to the middle part of the upper end of the liquid storage tank (11) through a flange.

5. The tail gas recovery device for autotrophic denitrification filler processing according to claim 1, characterized in that: The exhaust fan (13) is connected to the return pipe (12) via a flange, the exhaust direction of the exhaust fan (13) is from bottom to top, and the upper end of the return pipe (12) is connected to the lower end of the air inlet pipe (2) via a flange.

6. The tail gas recovery device for autotrophic denitrification filler processing according to claim 1, characterized in that: The liquid discharge pipe (14) is connected to the side wall of the liquid storage tank (11) via a flange.

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