CN203886354U - Purifying system for smoke discharged from boilers - Google Patents

Abstract

This utility model discloses a boiler flue gas purification system, including a sedimentation tank, a circulation tank, and a dust removal tower. The bottom of the dust removal tower is connected to the vent at the top of the sedimentation tank, and the vent at the top is connected to an exhaust pipe. The circulation tank is connected to the upper part of the sedimentation tank, but separated at the lower part. Several parallel and intersecting baffles are installed inside the dust removal tower. The dust removal tower of this utility model has several baffles installed inside, and a water curtain can be formed between the upper and lower baffles. After the exhaust gas passes through the water curtain, it is automatically purified, removing dust, water-soluble substances, and large particles. The wastewater settles in the sedimentation tank and then enters the circulation tank, where it is pumped back to the top of the dust removal tower to reform the water curtain and purify the exhaust gas. This allows the system to be recycled, reducing operating costs while providing excellent dust removal and purification effects.

Description

Boiler exhaust purification system

technical field

The utility model relates to a factory gas purification system, in particular to a boiler smoke exhaust purification system. the

Background technique

As the country pays more and more attention to environmental protection, purification equipment such as smoke exhaust, dust removal, desulfurization, and denitrification of industrial boilers have become indispensable and important equipment. At present, the current dust and smoke exhaust purification equipment mainly includes six categories: gravity dust collector, inertial dust collector, water bath dust collector, bag filter, electrostatic precipitator and sodium-alkali desulfurization tower for power stations. Among them, the combination of gravity dust collector (or inertial dust collector, bag filter) and water bath dust collector, plus desulfurizer (limestone or industrial alkali) is a commonly used method. Other equipment such as electrostatic precipitators and sodium-alkali desulfurization towers for power stations have different structures and performances. However, there are different degrees: complex structure, expensive price, huge investment, high application technical conditions, complex management, high operating cost, single function of dust removal, desulfurization and denitrification, unsatisfactory purification efficiency, large water consumption, and industrial wastewater. , pollute the environment, be difficult to meet the requirements of environmental protection and energy saving and many other deficiencies and defects, affecting the popularization and utilization of these devices in small and medium-sized enterprises. the

In order to solve the above-mentioned deficiencies in the prior art, the utility model proposes a new solution. the

Utility model content

The purpose of the utility model is to provide a boiler smoke purification system with good dust removal and desulfurization effect and low operation cost. the

In order to achieve the above purpose, the technical solution adopted by the utility model is to provide a boiler smoke exhaust purification system, which includes a sedimentation tank, a circulation tank and a dust removal tower; the bottom of the dust removal tower is connected to the vent at the upper end of the sedimentation tank, and the top The air outlet is connected to the exhaust pipe; the upper part of the circulation tank is connected with the sedimentation tank, and the lower part is cut off. The circulation tank is also equipped with a water pump that transports the water in the circulation tank to the top of the dust removal tower; the inside of the dust removal tower is installed with a number of mutual Parallel staggered baffles. the

Preferably, the exhaust pipe includes flat pipes and vertical pipes connected to each other. the

Preferably, the connecting end of the flat pipe and the dedusting tower is lower than the connecting end of the flat pipe and the vertical pipe. the

Preferably, a water return pipe is provided on the vertical pipe. the

Preferably, the baffle includes a first baffle and a second baffle, a stainless steel partition is arranged between the two, and holes are arranged on the partition. the

Preferably, an observation window is provided on the dedusting tower. the

Preferably, the water outlet of the water pump is connected with a spray device. the

Preferably, the sedimentation tank is connected to the waste gas pipe, and a heat recovery drying room is arranged outside the waste gas pipe. the

Preferably, a sewage outlet is provided at the bottom of the sedimentation tank. the

Preferably, there are five sets of baffles. the

In summary, the utility model has the following advantages:

1. A number of baffles are installed in the dedusting tower of the present utility model, and a water curtain can be formed between the upper and lower baffles, and the waste gas is automatically purified after passing through the water curtain, and the dust, water-soluble substances and large particle substances in the waste gas are removed , and the sewage enters the circulation pool after sedimentation in the sedimentation tank, and is pressed into the upper end of the dust removal tower by a water pump to re-form a water curtain to purify the exhaust gas, so that the system can be recycled, reducing operating costs, and has a good dust removal and purification effect. the

2. The connecting end of the flat pipe of the exhaust pipe and the dust removal tower is lower than the connecting end of the flat pipe and the vertical pipe, so that the flat pipe has a certain inclination. When the return pipe in the vertical pipe is opened, the water flow can flow from the vertical The pipe and the flat pipe flow into the sedimentation tank, and in the process, the exhaust pipe is purified, the dust accumulated in the exhaust pipe is taken away, and the exhaust pipe is prevented from being blocked. the

3. There is a drying room on the waste gas pipe, which can recycle the waste heat in the waste gas. the

Description of drawings

Fig. 1 is the schematic diagram of the utility model;

Figure 2 is a schematic diagram of the dedusting tower. the

Among them, 1. Boiler; 2. Sedimentation tank; 3. Circulation tank; 4. Dust removal tower; 5. Partition; 6. Water pump; 7. Baffle; ; 11, drying room; 12, the first baffle; 13, the second baffle; 14, spraying device. the

Detailed ways

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail. the

As shown in FIG. 1 and FIG. 2 , the utility model provides a boiler exhaust gas purification system, which includes a sedimentation tank 2 , a circulation tank 3 and a dust removal tower 4 . The bottom of the dedusting tower 4 is connected with the air vent on the upper end of the sedimentation tank 2, and the air outlet on the top of the dedusting tower 4 is connected with the exhaust pipe. The circulation tank 3 communicates with the upper part of the sedimentation tank 2, and the lower part is cut off. The upper part of the sedimentation tank 2 has low dust content, and the lower part contains a lot of dust. Therefore, the circulation tank 3 and the upper part of the sedimentation tank 2 are connected to ensure the quality of circulating water. In addition, the circulation pool 3 is also provided with a water pump 6 for transporting the water in the circulation pool 3 to the top of the dust removal tower 4 , and the water outlet of the water pump 6 is connected with a spray device 14 . A number of baffles 7 parallel and staggered are installed inside the dedusting tower 4. One end of the baffles 7 is fixed on the inner wall of the dedusting tower 4, and the other end extends to the center of the dedusting tower 4. The staggered arrangement of the baffles 7 means that the upper baffles extend toward One end of dedusting tower 4 centers vertically falls on the lower floor baffle plate, and at this moment, a water curtain can be formed between the upper floor baffle plate and the lower floor baffle plate. the

The exhaust pipe comprises a flat pipe 8 and a vertical pipe 9 connected to each other, and the vertical pipe 9 is provided with a water return pipe. The connecting end of flat pipe 8 and dedusting tower 4 is lower than the connecting end of flat pipe 8 and vertical pipe 9, so that the water that enters after the return pipe is opened can not gather in the exhaust pipe, and is also convenient for flushing the exhaust pipe. the

Baffle plate 7 has five groups, and the uppermost layer of baffle plate 7 is first baffle plate 12 and second baffle plate 13, is provided with stainless steel dividing plate 5 between the two, is provided with hole on dividing plate 5, is convenient to form water curtain . The dust removal tower 4 is provided with an observation window 10. The settling tank 2 is connected with the waste gas pipe, and the outside of the waste gas pipe is provided with a drying room 11 for heat recovery. The bottom of the sedimentation tank 2 is provided with a sewage outlet. the

Although the specific implementation of the utility model has been described in detail in conjunction with the accompanying drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative work still belong to the protection scope of this patent. the

Claims (1)

1. A boiler smoke exhaust purification system is characterized in that: comprise sedimentation tank, circulation tank and dedusting tower; The bottom of dedusting tower is connected with the air vent on the upper end of the sedimentation tank, and the air outlet at the top is connected with exhaust pipe; The upper part of the sedimentation tank is connected, and the lower part is cut off. The circulating tank is also equipped with a water pump to transport the water in the circulating tank to the top of the dust removal tower; the inside of the dust removal tower is equipped with a number of parallel and interlaced baffles. 2. The boiler exhaust fume purification system according to claim 1, characterized in that: said exhaust pipe comprises flat pipes and vertical pipes connected to each other. 3. The boiler smoke purification system according to claim 2, characterized in that: the connecting end of the flat pipe and the dust removal tower is lower than the connecting end of the flat pipe and the vertical pipe. 4. The boiler exhaust gas purification system according to claim 2, characterized in that: said vertical pipe is provided with a return pipe. 5. The boiler smoke purification system according to claim 1, wherein the baffle plate comprises a first baffle plate and a second baffle plate, a stainless steel partition is arranged between the two, and a partition is provided on the partition hole. 6. The boiler exhaust gas purification system according to claim 1, characterized in that: the dust removal tower is provided with an observation window. 7. The boiler exhaust gas purification system according to claim 1, characterized in that: the water outlet end of the water pump is connected with a spray device. 8. The boiler exhaust gas purification system according to claim 1, characterized in that: the sedimentation tank is connected to the waste gas pipe, and a heat recovery drying room is arranged outside the waste gas pipe. 9. The boiler exhaust gas purification system according to claim 1, characterized in that: the bottom of the sedimentation tank is provided with a sewage outlet. 10. The boiler exhaust gas purification system according to claim 1, wherein there are five sets of said baffles.