A backflushing flue gas cleaning system

Abstract

A backflushing flue gas purification system relates to the field of flue gas purification and emission. The equipment includes a purification tank, with a flue gas inlet pipe extending downwards from the upper part of the purification tank. A spray pipe is installed inside the flue gas inlet pipe, and a nozzle is installed at one end of the spray pipe, with the nozzle facing the direction of flue gas inflow. The spray pipe is connected to a circulation pump, and the inlet end of the circulation pump has a water inlet pipe. A purification discharge pipe is installed on the side of the flue gas inlet pipe, and an adsorbent filter material is installed inside the purification discharge pipe. This utility model solves the problem of insufficient flue gas purification power for small emission equipment in the prior art. By installing backflushing nozzles in the pipeline, a small dose or flow rate of detergent is used to spray the flue gas comprehensively. Combined with the secondary adsorption of the adsorbent filter material, the purification effect of flue gas emission is excellent. At the same time, the equipment configuration is reasonable, the maintenance and filter material replacement process is simple, and it is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification, and in particular to a backwash flue gas purification system. Background Technology

[0002] Generally, flue gas contains harmful gases such as dust particles, sulfides, and carbon monoxide. Large-scale chemical and thermal power industries typically equip their flue gas emissions with comprehensive purification and emission systems.

[0003] Small businesses, such as those dealing with small boilers or even kitchen exhaust, often lack corresponding purification equipment. Common methods include using negative pressure ventilation systems or gravity-flow flue gas, combined with settling chambers for particle sedimentation, or relying on filters and other adsorbent materials for filtration and purification. However, the drawbacks of these methods are obvious. The main drawback is poor purification efficiency, insufficient handling of toxic gases, and the fact that purified flue gas still doesn't meet emission standards. Secondly, maintenance is difficult; the internal cleaning and material replacement processes for the purification equipment are cumbersome, and dirt is difficult to remove. This leads to negligence on the part of the responsible party, further exacerbating the problem of substandard flue gas emissions. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a backwash flue gas purification system that is simple in structure, easy to use, especially suitable for applications such as small boilers, has high purification power, and is easy to maintain.

[0005] The equipment includes a purification tank, which is the basic assembly component of this equipment, and its inner cavity is a chamber for flue gas purification. A flue gas inlet pipe is provided through the upper part of the purification tank, and a spray pipe is provided inside the flue gas inlet pipe. A nozzle is provided at the end of the spray pipe, and the nozzle is positioned opposite to the flue gas inlet direction. The effect achieved is that by installing backwash nozzles in a pipe with a limited diameter, a small dose or flow rate of detergent can be used to spray the flue gas comprehensively.

[0006] The spray pipe is connected to the circulation pump, and the inlet end of the circulation pump is provided with an inlet pipe, which is located at the bottom of the inner cavity of the purification tank. A purification discharge pipe is provided on the side of the flue gas inlet pipe, and an adsorbent filter material is provided inside the purification discharge pipe.

[0007] The effect achieved is that the flue gas enters the inner cavity of the purification tank through the flue gas inlet pipe. During the flue gas flow, the circulation pump backwashes the toxic gas detergent in the direction of smoke inflow. The falling detergent falls into the bottom of the purification tank and is sucked into the circulation pump through the water inlet pipe to achieve detergent recycling until the detergent is saturated. The purified gas is discharged through the purification exhaust pipe and undergoes secondary adsorption by the adsorption filter material to achieve purified discharge.

[0008] The beneficial effects of this invention are as follows: This invention solves the problem of insufficient flue gas purification power in existing technologies for small-scale emission equipment. By setting backflush nozzles inside the pipeline, it achieves comprehensive spraying of flue gas with a small dose or flow rate of detergent; combined with secondary adsorption by adsorbent filter media, the purification effect on flue gas emissions is excellent. At the same time, the equipment configuration is reasonable, the maintenance and filter media replacement process is simple, it is convenient to use, and it also has greater environmental protection promotion value. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of a backwash flue gas purification system according to the present invention; Figure label: 1-Flue gas inlet pipe 2-Purified emission pipe 3-Adsorbent filter media box 4-Assembly pipe seat 5-Purification tank 6-Electronic level gauge 7-Solution filtration mechanism 8-Inspection port 9-One-way valve 10-Replenishment pipe 11-Solvent pump inlet mechanism 12-Control panel 13-Control system 14-Drain valve 15-Drain pipe 16-Water inlet pipe 17-Circulation pump 18-Spray pipe 19-Spray head The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0010] Reference Figure 1 The present invention provides a backwash flue gas purification system, which includes a purification tank 5. The purification tank 5 is the basic assembly component of the equipment, and its inner cavity is a flue gas purification chamber. A flue gas inlet pipe 1 is provided through the upper part of the purification tank 5. A spray pipe 18 is provided inside the flue gas inlet pipe 1. A nozzle 19 is provided at the end of the spray pipe 18, and the nozzle 19 is positioned opposite to the flue gas inlet direction. The effect achieved is that by installing backwash nozzles in a pipe with a limited diameter, a small dose or flow rate of detergent can be used to spray the flue gas comprehensively.

[0011] The spray pipe 18 is connected to the circulation pump 17. The inlet end of the circulation pump 17 is provided with an inlet pipe 16, and the inlet pipe 16 is located at the bottom of the inner cavity of the purification tank 5. A purification discharge pipe 2 is provided on the side of the flue gas inlet pipe 1, and an adsorbent filter material is provided inside the purification discharge pipe 2.

[0012] In Example 1, a T-junction is provided at the end of the water inlet pipe 16, through which the replenishment pipe 10 and the solution filtration mechanism 7 are respectively connected. The solution filtration mechanism 7 includes an assembly housing, within which a removable filter material is disposed.

[0013] In Example 2, a one-way valve 9 is provided inside the replenishment pipe 10, and the replenishment pipe 10 is connected to the solvent pump inlet mechanism 11.

[0014] The effect achieved is that the replenishment pipe 10 can immediately replenish the washing liquid in the purification tank 5 when the liquid level in the purification tank 5 is too low; during the circulation of the washing liquid, the particulate matter is filtered through the solution filtration mechanism 7, thereby reducing the risk of pipe blockage.

[0015] In Example 3, a drain pipe 15 is provided at the bottom of the purification tank 5, and a drain valve 14 is provided on the drain pipe 15.

[0016] In Example 4, the purification tank 5 is provided with an inspection port 8, and a flange is sealed on the inspection port 8. The inspection port 8 is located at a position corresponding to the solution filtration mechanism 7.

[0017] This facilitates the replacement of the filter media in the solution filtration mechanism 7.

[0018] Example 5: A mounting pipe seat 4 is provided on the side of the flue gas inlet pipe 1, and an adsorption filter material box 3 is inserted and removed from the mounting pipe seat 4. The purification discharge pipe 2 is pluggable and inserted into the assembly pipe seat 4, and a mechanical seal is provided between the assembly pipe seat 4 and the purification discharge pipe 2.

[0019] This facilitates the replacement of the adsorbent filter material inside the purification discharge pipe 2.

[0020] Example 6: The purification tank 5 is equipped with an electronic level gauge 6, and the drain valve 14 is a solenoid valve. The circulating pump 17, solvent pumping mechanism 11, electronic level gauge 6 and drain valve 14 are connected to the control system 13 via signal connection.

[0021] Preferably, the control system 13 is a PLC or a DCS; A control panel 12 is provided outside the solvent pumping mechanism 11, and the control panel 12 is connected to the control system 13.

[0022] The effect achieved in this way is that the control system 13 coordinates the replenishment and drainage of the equipment.

[0023] When in use, the flue gas enters the inner cavity of the purification tank 5 through the flue gas inlet pipe 1. During the flue gas flow, the circulation pump 17 backflush the toxic gas detergent in the direction of smoke inflow. The falling detergent falls into the bottom of the purification tank 5 and is sucked into the circulation pump 17 through the water inlet pipe 16 to realize the recycling of the detergent until the detergent is saturated. The purified gas is discharged through the purification exhaust pipe 2 and undergoes secondary adsorption by the adsorption filter material to achieve purified discharge.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A backflushing flue gas purification system, comprising a purification tank, wherein the purification tank is the basic assembly component of the equipment, and its inner cavity is a chamber for flue gas purification, characterized in that: A flue gas inlet pipe is provided through the upper part of the purification tank, and a spray pipe is provided inside the flue gas inlet pipe. A nozzle is provided at the end of the spray pipe, and the nozzle is positioned opposite to the flue gas inlet direction. The spray pipe is connected to the circulation pump, and the inlet end of the circulation pump is provided with an inlet pipe, which is located at the bottom of the inner cavity of the purification tank. A purification discharge pipe is provided on the side of the flue gas inlet pipe, and an adsorbent filter material is provided inside the purification discharge pipe.

2. The backwash flue gas purification system according to claim 1, characterized in that, The inlet pipe is equipped with a tee at its end, through which the replenishment pipe and the solution filtration mechanism are connected respectively. The solution filtration mechanism includes an assembly housing, within which a removable filter material is disposed.

3. The backwash flue gas purification system according to claim 2, characterized in that, The replenishment tube is equipped with a one-way valve and is connected to a solvent pump inlet mechanism.

4. The backwash flue gas purification system according to claim 1, characterized in that, The purification tank is equipped with a drain pipe at the bottom, and a drain valve is installed on the drain pipe.

5. The backwash flue gas purification system according to claim 1, characterized in that, The purification tank is provided with an inspection port, and a flange is sealed on the inspection port. The inspection port is located at the position corresponding to the solution filtration mechanism.

6. The backwash flue gas purification system according to claim 1, characterized in that, A mounting pipe seat is provided on the side of the flue gas inlet pipe, and an adsorption filter material box is inserted and removed from the mounting pipe seat. The purification discharge pipe is pluggable and pluggable on the assembly pipe seat, and a mechanical seal is provided between the assembly pipe seat and the purification discharge pipe.

7. The backwash flue gas purification system according to claim 4, characterized in that, The purification tank is equipped with an electronic level gauge, and the drain valve is a solenoid valve. The circulating pump, solvent pumping mechanism, electronic level gauge, and drain valve signal connection control system are described above.

Images