Sludge drying tail gas purification treatment equipment

Abstract

The utility model relates to the technical field of sludge drying tail gas purification, and discloses sludge drying tail gas purification treatment equipment which comprises a sludge drying device body, an activated carbon adsorption tower body is arranged on the right side of the sludge drying device body, and a catalytic oxidation chamber body is arranged on the right side of the activated carbon adsorption tower body. An exhaust box body is arranged on the right side of the catalytic oxidation chamber body, a waste heat utilization mechanism is arranged on the right side of the sludge drying device body, and a detection mechanism is arranged on the left side of the exhaust box body. The carbon monoxide detector body detects gas exhausted from the inside of the exhaust box body, if CO is contained, the carbon monoxide detector body gives an alarm, the electromagnetic valve body is closed through the control unit, and at the moment, the gas flows back into the catalytic oxidation chamber body through the circulating pipe and is retreated, so that the gas in the spiral gas pipe is heated, and the gas is discharged out of the exhaust box body. And waste heat of tail gas in the first gas feeding pipe is utilized, and energy waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sludge drying tail gas purification technology, specifically a sludge drying tail gas purification treatment device. Background Technology

[0002] With the acceleration of urbanization, the amount of sludge produced by sewage treatment plants is increasing year by year, and thermal drying technology is widely used due to its advantages of volume reduction and harmlessness. However, the exhaust gas generated during the sludge drying process has a complex composition, including pollutants such as particulate matter, volatile organic compounds, malodorous gases, acidic gases, and heavy metals. Direct discharge of these pollutants will seriously endanger the environment and human health.

[0003] Traditional processes often employ single treatment units, such as using only a spray tower to remove particulate matter and acidic gases, or using only activated carbon to adsorb VOCs, resulting in incomplete pollutant removal. If catalytic oxidation is used, the exhaust gas needs to be heated to decompose VOCs. However, VOCs react with oxygen to produce CO2 and H2O, and CO2 will generate CO at high temperatures, still causing air pollution. Furthermore, these processes rely on electric heating or gas heating, and existing equipment lacks waste heat recovery design. Waste heat generated by the sludge drying system is directly emitted, resulting in energy waste. Therefore, it is necessary to improve the sludge drying exhaust gas purification equipment to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a sludge drying exhaust gas purification treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sludge drying tail gas purification and treatment device, comprising a sludge drying device body, an activated carbon adsorption tower body disposed on the right side of the sludge drying device body, a catalytic oxidation chamber body disposed on the right side of the activated carbon adsorption tower body, an exhaust box disposed on the right side of the catalytic oxidation chamber body, a waste heat utilization mechanism disposed on the right side of the sludge drying device body, and a detection mechanism disposed on the left side of the exhaust box.

[0006] Preferably, the detection mechanism includes an air supply pipe one, which is fixedly installed on the right side of the sludge drying device body; an air supply pipe two is fixedly installed on the right side of the activated carbon adsorption tower body; an air supply pipe three is fixedly installed on the right side of the catalytic oxidation chamber body; a solenoid valve body is fixedly installed on the outside of the air supply pipe three; a carbon monoxide detector body is installed on the top of the exhaust box; and a circulation pipe is fixedly installed at the bottom of the air supply pipe three.

[0007] Preferably, the end of the first air supply pipe away from the sludge drying device body is fixedly installed with the activated carbon adsorption tower body, the end of the second air supply pipe away from the activated carbon adsorption tower body is fixedly installed with the catalytic oxidation chamber body, and the end of the third air supply pipe away from the catalytic oxidation chamber body is fixedly installed with the exhaust box body.

[0008] Preferably, the carbon monoxide detector body and the solenoid valve body are electrically connected through a control unit, and the end of the circulation pipe away from the gas supply pipe is fixedly installed to the catalytic oxidation chamber body.

[0009] Preferably, the waste heat utilization mechanism includes an industrial oxygen supply unit, which is installed on top of the sludge drying device. A fan is fixedly installed on the left side of the industrial oxygen supply unit, and an air inlet pipe is fixedly installed at the bottom of the fan. A spiral air pipe is fixedly installed at the end of the air inlet pipe away from the fan, and an air outlet pipe is fixedly installed at the end of the spiral air pipe away from the air inlet pipe. A heat insulation layer one is provided on the outside of the spiral air pipe, and a heat insulation layer two is provided on the outside of the air outlet pipe.

[0010] Preferably, the industrial oxygen supply unit body and the fan are fixedly installed through a connecting pipe, the end of the outlet pipe away from the spiral pipe is fixedly installed to the catalytic oxidation chamber body, and the spiral pipe is in close contact with the air supply pipe.

[0011] Preferably, the spiral air pipe is wrapped with a first insulation layer, and the air outlet pipe is wrapped with a second insulation layer. The materials of the first insulation layer and the second insulation layer are aluminum silicate fiber felt.

[0012] Compared with the prior art, this utility model provides a sludge drying tail gas purification treatment device, which has the following beneficial effects:

[0013] 1. In the operation of this sludge drying tail gas purification equipment, the carbon monoxide detector detects the gas discharged from the exhaust box. If CO is present, the carbon monoxide detector alarms and closes the solenoid valve via the control unit. At this time, the gas flows back to the catalytic oxidation chamber through the circulation pipe for further treatment. Oxygen from the industrial oxygen supply unit is transported by a fan and delivered to the catalytic oxidation chamber through the inlet pipe, spiral pipe, and outlet pipe. The oxygen reacts with CO to generate CO2, which is then discharged through the gas supply pipe. After the carbon monoxide detector detects that CO is no longer present, the gas is discharged.

[0014] 2. During operation, the sludge drying tail gas purification equipment heats the O2 inside the spiral gas pipe and introduces the hot O2 into the catalytic oxidation chamber to utilize the waste heat of the tail gas inside the gas supply pipe. This eliminates the need for electric heating or gas heating, thus reducing energy waste. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2 This is an exploded view of the appearance structure of this utility model.

[0018] In the diagram: 1. Sludge drying device body; 2. Detection mechanism; 21. Air supply pipe one; 22. Air supply pipe two; 23. Air supply pipe three; 24. Solenoid valve body; 25. Carbon monoxide detector body; 26. Circulation pipe; 3. Waste heat utilization mechanism; 31. Industrial oxygen supply machine body; 32. Fan; 33. Air inlet pipe; 34. Spiral air pipe; 35. Insulation layer one; 36. Air outlet pipe; 37. Insulation layer two; 4. Activated carbon adsorption tower body; 5. Catalytic oxidation chamber body; 6. Exhaust box. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example 1:

[0022] Please see Figure 1-2This utility model provides a technical solution: a sludge drying tail gas purification treatment device, including a sludge drying device body 1, an activated carbon adsorption tower body 4 arranged on the right side of the sludge drying device body 1, a catalytic oxidation chamber body 5 arranged on the right side of the activated carbon adsorption tower body 4, an exhaust box body 6 arranged on the right side of the catalytic oxidation chamber body 5, a waste heat utilization mechanism 3 arranged on the right side of the sludge drying device body 1, and a detection mechanism 2 arranged on the left side of the exhaust box body 6.

[0023] Furthermore, the detection mechanism 2 includes an air supply pipe 21, which is fixedly installed on the right side of the sludge drying device body 1. An air supply pipe 22 is fixedly installed on the right side of the activated carbon adsorption tower body 4. An air supply pipe 3 23 is fixedly installed on the right side of the catalytic oxidation chamber body 5. A solenoid valve body 24 is fixedly installed on the outside of the air supply pipe 3 23. A carbon monoxide detector body 25 is installed on the top of the exhaust box 6. A circulation pipe 26 is fixedly installed at the bottom of the air supply pipe 3 23 to detect and treat CO.

[0024] Furthermore, the end of the first air supply pipe 21 away from the sludge drying device body 1 is fixedly installed with the activated carbon adsorption tower body 4, the end of the second air supply pipe 22 away from the activated carbon adsorption tower body 4 is fixedly installed with the catalytic oxidation chamber body 5, and the end of the third air supply pipe 23 away from the catalytic oxidation chamber body 5 is fixedly installed with the exhaust box body 6, so as to carry out multiple purification treatments and make the treatment more thorough.

[0025] Furthermore, the carbon monoxide detector body 25 and the solenoid valve body 24 are electrically connected through a control unit. The end of the circulation pipe 26 away from the gas supply pipe 23 is fixedly installed with the catalytic oxidation chamber body 5. The carbon monoxide detector body 25 performs detection operations on the gas discharged from the exhaust box 6.

[0026] Example 2:

[0027] Please see Figure 1-2 Furthermore, in conjunction with Embodiment 1, it is further obtained that the waste heat utilization mechanism 3 includes an industrial oxygen supply machine body 31, which is installed on top of the sludge drying device body 1. A fan 32 is fixedly installed on the left side of the industrial oxygen supply machine body 31, and an air inlet pipe 33 is fixedly installed at the bottom of the fan 32. A spiral air pipe 34 is fixedly installed at the end of the air inlet pipe 33 away from the fan 32, and an air outlet pipe 36 is fixedly installed at the end of the spiral air pipe 34 away from the air inlet pipe 33. A heat insulation layer 1 35 is provided on the outside of the spiral air pipe 34, and a heat insulation layer 2 37 is provided on the outside of the air outlet pipe 36. It does not need to rely on electric heating or gas heating, thus reducing energy waste.

[0028] Furthermore, the industrial oxygen supply unit 31 and the fan 32 are fixedly installed through a connecting pipe. The end of the outlet pipe 36 away from the spiral pipe 34 is fixedly installed with the catalytic oxidation chamber body 5. The spiral pipe 34 is in close contact with the air supply pipe 21, so that hot O2 is introduced into the catalytic oxidation chamber body 5 and the waste heat of the exhaust gas inside the air supply pipe 21 is utilized.

[0029] Furthermore, the spiral air pipe 34 is wrapped with a heat insulation layer 35, and the air outlet pipe 36 is wrapped with a heat insulation layer 37. The material of the heat insulation layer 35 and the heat insulation layer 37 is aluminum silicate fiber felt to reduce heat loss.

[0030] In actual operation, when this device is in use, the sludge drying unit 1 discharges high-temperature exhaust gas through air supply pipe 21 during the sludge drying process. This exhaust gas then enters the activated carbon adsorption tower 4, where porous materials such as activated carbon and molecular sieves adsorb VOCs. The exhaust gas is then transported to the catalytic oxidation chamber 5 through air supply pipe 22. Using precious metals Pt and Pd or transition metals MnO2 and CeO2 as catalysts, VOCs react with oxygen to produce CO2 and H2O, completely decomposing the VOCs. The purified gas is then transported to the exhaust box 6 through air supply pipe 3. Simultaneously, the carbon monoxide detector 25 detects the gas discharged from the exhaust box 6. If CO is present, the carbon monoxide detector 25 alarms and closes the solenoid valve 24 via the control unit. At this time, the gas flows back to the catalytic oxidation chamber 5 through the circulation pipe 26 for further processing. Oxygen from the industrial oxygen supply unit 31 is transported by the fan 32 and delivered to the catalytic oxidation chamber 5 through the inlet pipe 33, spiral pipe 34, and outlet pipe 36. The oxygen reacts with CO to generate CO2, which is then discharged through the delivery pipe 23. After the carbon monoxide detector 25 detects that CO is not present, the gas is discharged.

[0031] The spiral gas pipe 34 is in close contact with the gas supply pipe 21, and the spiral gas pipe 34 and the gas outlet pipe 36 are insulated by the insulation layer 35 and the insulation layer 37, so that the O2 inside the spiral gas pipe 34 is heated and the hot O2 is introduced into the catalytic oxidation chamber body 5 to utilize the waste heat of the exhaust gas inside the gas supply pipe 21. This eliminates the need for electric heating or gas heating and prevents energy waste.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A sludge drying tail gas purification and treatment device, comprising a sludge drying device body (1), characterized in that: The sludge drying device body (1) is provided with an activated carbon adsorption tower body (4) on the right side, a catalytic oxidation chamber body (5) on the right side, an exhaust box (6) on the right side, a waste heat utilization mechanism (3) on the right side, and a detection mechanism (2) on the left side of the exhaust box (6).

2. The sludge drying tail gas purification treatment equipment according to claim 1, characterized in that: The detection mechanism (2) includes an air supply pipe (21), which is fixedly installed on the right side of the sludge drying device body (1). An air supply pipe (22) is fixedly installed on the right side of the activated carbon adsorption tower body (4). An air supply pipe (23) is fixedly installed on the right side of the catalytic oxidation chamber body (5). An electromagnetic valve body (24) is fixedly installed on the outside of the air supply pipe (23). A carbon monoxide detector body (25) is installed on the top of the exhaust box (6). A circulation pipe (26) is fixedly installed at the bottom of the air supply pipe (23).

3. The sludge drying tail gas purification treatment equipment according to claim 2, characterized in that: The end of the first air supply pipe (21) away from the sludge drying device body (1) is fixedly installed with the activated carbon adsorption tower body (4), the end of the second air supply pipe (22) away from the activated carbon adsorption tower body (4) is fixedly installed with the catalytic oxidation chamber body (5), and the end of the third air supply pipe (23) away from the catalytic oxidation chamber body (5) is fixedly installed with the exhaust box body (6).

4. The sludge drying tail gas purification treatment equipment according to claim 2, characterized in that: The carbon monoxide detector body (25) and the solenoid valve body (24) are electrically connected through a control unit, and the end of the circulation pipe (26) away from the gas supply pipe (23) is fixedly installed with the catalytic oxidation chamber body (5).

5. The sludge drying tail gas purification treatment equipment according to claim 1, characterized in that: The waste heat utilization mechanism (3) includes an industrial oxygen supply machine body (31), which is located on top of the sludge drying device body (1). A fan (32) is fixedly installed on the left side of the industrial oxygen supply machine body (31). An air inlet pipe (33) is fixedly installed at the bottom of the fan (32). A spiral air pipe (34) is fixedly installed at the end of the air inlet pipe (33) away from the fan (32). An air outlet pipe (36) is fixedly installed at the end of the spiral air pipe (34) away from the air inlet pipe (33). A heat insulation layer (35) is provided on the outside of the spiral air pipe (34), and a heat insulation layer (37) is provided on the outside of the air outlet pipe (36).

6. The sludge drying tail gas purification treatment equipment according to claim 5, characterized in that: The industrial oxygen supply machine body (31) and the fan (32) are fixedly installed through a connecting pipe. The end of the outlet pipe (36) away from the spiral pipe (34) is fixedly installed with the catalytic oxidation chamber body (5). The spiral pipe (34) is in close contact with the air supply pipe (21).

7. The sludge drying tail gas purification treatment equipment according to claim 5, characterized in that: The spiral air pipe (34) is wrapped with a heat insulation layer one (35) on the outside, and the air outlet pipe (36) is wrapped with a heat insulation layer two (37) on the outside. The materials of the heat insulation layer one (35) and the heat insulation layer two (37) are aluminum silicate fiber felt.

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