CN216572245U

CN216572245U - High-temperature flue gas pipe bag combined type dust remover

Info

Publication number: CN216572245U
Application number: CN202120634789.1U
Authority: CN
Inventors: 王乾亮; 余仙敏
Original assignee: Beijing Chinsuny Environmental Protection Tech Co ltd
Current assignee: Beijing Chinsuny Environmental Protection Tech Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2022-05-24
Anticipated expiration: 2031-03-29

Abstract

The utility model relates to a high-temperature flue gas pipe-bag combined type dust remover which comprises a multi-pipe cyclone dust remover and a metal filter pipe dust remover, wherein the multi-pipe cyclone dust remover is arranged on one side of the metal filter pipe dust remover, the multi-pipe cyclone dust remover is connected with an inlet flue, an outlet flue is arranged on the other side of the metal filter pipe dust remover, and the metal filter pipe dust remover is connected with a spiral conveyor in an ash conveying mode through a plurality of conveying pipelines. The utility model has the beneficial effects that: about 80% of large dust particles are removed by the primary multi-pipe dust remover, so that the impact and abrasion on the metal filter pipe are reduced, the ash removal frequency is reduced, and the service lives of the filter pipe and the electromagnetic pulse valve are prolonged; after the pre-dedusting treatment of the multi-tube deduster, the filtering area of the metal filter tube can be properly reduced, the air distribution ratio is improved, and the manufacturing cost of the whole dedusting system is reduced; compared with the traditional cloth bag dust removal, the metal filter tube dust remover has the advantages of high temperature resistance, wear resistance, high strength, good air permeability, long service life and the like.

Description

High-temperature flue gas pipe bag combined type dust remover

Technical Field

The utility model relates to a high-temperature flue gas pipe-bag combined type dust remover, which is particularly applied to the field of biomass power generation and cement kiln flue gas dust removal.

Background

Along with the increasing requirements on flue gas emission, SCR systems are basically added in denitration systems, the dust content of flue gas of biomass power generation and cement kilns is large, if SCR is directly added, the blockage and abrasion of catalysts are easily caused, and it is very necessary to add dust removal equipment before SCR, but the reaction temperature range of a medium-temperature catalyst is 310-400 ℃, and a dust remover must be capable of adapting to the high temperature.

The dust remover is a device for separating dust from flue gas, and is called dust remover or dust removing device. The performance of a precipitator is expressed in terms of the amount of gas that can be treated, the resistance loss of the gas as it passes through the precipitator, and the efficiency of the precipitation. A primary pre-dedusting device is additionally arranged towards the front end for dedusting high-dust-concentration flue gas, so that the operating pressure of a secondary deduster is reduced, and the operating life is prolonged. The traditional dust remover mainly comprises a multi-pipe cyclone dust remover, a bag-type dust remover and a metal filter tube dust remover or the combination of the multi-pipe cyclone dust remover and the bag-type dust remover. If the multi-tube cyclone dust collector is used independently, the multi-tube cyclone dust collector can only be used as pre-dust-collecting equipment to remove large-particle dust, the flue gas temperature treated by the bag-type dust collector is mostly below 200 ℃, and the multi-tube cyclone dust collector is hardly suitable for the field of high-temperature flue gas dust collection, and the metal filter tube dust collector has the advantages of high adaptive flue gas temperature, high dust collector efficiency and the like, but has higher overall manufacturing cost. There are also the following disadvantages: 1. the traditional two-stage dust remover occupies a large area, and the connection of a flue is complex; 2. the traditional two-stage dust remover has high operation cost and can not dynamically adjust the operation load; 3. the flue gas temperature treated by the traditional bag-type dust collector is mostly below 200 ℃, and the traditional bag-type dust collector is not suitable for removing dust of high-temperature flue gas; 4. the metal filter tube dust remover has high dust removal efficiency, but the whole manufacturing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-temperature flue gas pipe bag combined type dust remover to overcome the defects in the prior art.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides a tube and bag combined type dust remover, includes multitube cyclone and metal filter tube dust remover, multitube cyclone sets up in one side of metal filter tube dust remover, and multitube cyclone is connected with the import flue, and the opposite side of metal filter tube dust remover is equipped with the export flue, and the metal filter tube dust remover is connected with screw conveyer through a plurality of pipeline.

Furthermore, a star-shaped feeder is arranged on the conveying pipeline.

Furthermore, a manual gate valve is arranged at the position, close to the connection part of the top end of the conveying pipeline and the metal filter tube dust remover, of the top end of the conveying pipeline.

Furthermore, a plug board is arranged on the inlet flue.

The utility model has the beneficial effects that:

1. about 80% of dust (mainly large-particle dust) is removed by a primary multi-pipe dust collector, so that the impact and abrasion to a metal filter pipe are reduced, the ash removal frequency is reduced, and the service lives of a cloth bag and an electromagnetic pulse valve are prolonged;

2. the cyclone dust removing mechanism of multi-pipe dust removal can effectively increase the combination probability of liquid and dust particles, reduce the humidity (water and oil) of flue gas and reduce the possibility of condensation. Meanwhile, the workload of pre-coating ash and the investment of ash sources are also saved;

3. the metal filter tube dust remover has the advantages of high temperature resistance, wear resistance, high strength, good air permeability, long service life and the like, and can operate for a long time at the temperature of more than 300 ℃;

4. the multi-pipe cyclone dust removal is added in front of the metal filter pipe dust remover for pre-dust removal, so that the operating pressure of the metal filter pipe can be greatly reduced, the abrasion to the metal filter pipe is reduced, and the service life of the metal filter pipe is prolonged. Meanwhile, the filtering area of the metal filter tube can be properly reduced, and the gas-cloth ratio of the dust remover is improved, so that the construction investment and the operation cost can be indirectly reduced;

5. a fault bypass valve is arranged between the primary multi-tube dust collector and the secondary metal filter tube dust collector, and when in an accident state, the flue gas can only pass through the multi-tube dust collector and short-circuit the metal filter tube dust collector;

6. the primary multi-tube dust remover can independently operate, so that the metal filter tube dust remover is completely off-line guaranteed, and the maintenance time is fully guaranteed. Meanwhile, the metal filter tube dust remover does not need to be provided with a chamber-divided off-line valve and a control system required by on-line maintenance, so that the structure and the electric control system of the dust remover are greatly simplified, and the complexity of operation and maintenance is greatly reduced;

7. the occupied area is greatly reduced, the appearance is beautiful, and the process is smooth.

Drawings

The utility model is explained in further detail below with reference to the drawing.

FIG. 1 is a front view of a tube and bag composite precipitator according to an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a top view of fig. 1.

In the figure:

1. an inlet flue; 2. a plugboard; 3. a multi-cyclone dust collector; 4. a metal filter tube dust remover; 5. an outlet flue; 6. a manual gate valve; 7. a star-shaped feeder; 8. a screw conveyor; 9. a delivery conduit.

Detailed Description

As shown in fig. 1-3, the tube-bag combined type dust collector provided by the embodiment of the utility model comprises a multi-tube cyclone dust collector 3 and a metal filter tube dust collector 4, wherein the multi-tube cyclone dust collector 3 is arranged on one side of the metal filter tube dust collector 4, the multi-tube cyclone dust collector 3 is connected with an inlet flue 1, a plugboard 2 is arranged on the inlet flue 1, an outlet flue 5 is arranged on the other side of the metal filter tube dust collector 4, the metal filter tube dust collector 4 is connected with a screw conveyor 8 through a plurality of conveying pipelines 9, a star-shaped feeder 7 is arranged on each conveying pipeline 9, and a manual flashboard valve 6 is arranged at the position, close to the connection part with the metal filter tube dust collector 4, of the top end of each conveying pipeline 9.

When in work, the flue gas to be treated enters the utility model through the inlet flue 1; firstly, the flue gas enters a multi-pipe cyclone dust collector 3, and primary treatment is carried out on large-particle dust in the flue gas; the flue gas treated by the multi-pipe cyclone dust collector 3 enters a metal filter pipe dust collector 4 for secondary advanced treatment, and fine dust in the flue gas is deeply trapped; the purified flue gas enters the next system through the outlet flue 5, and can be discharged at 5mg/m continuously and stably after reaching the standard³The following.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.

Claims

1. The utility model provides a high temperature flue gas pipe bag combined type dust remover, includes multitube cyclone (3) and metal filter tube dust remover (4), its characterized in that: the multi-pipe cyclone dust collector (3) is arranged on one side of the metal filter pipe dust collector (4), the multi-pipe cyclone dust collector (3) is connected with the inlet flue (1), the outlet flue (5) is arranged on the other side of the metal filter pipe dust collector (4), and the metal filter pipe dust collector (4) is connected with the spiral conveyor (8) through a plurality of conveying pipelines (9).

2. A high temperature flue gas duct bag compound dust collector as claimed in claim 1, wherein: and a star-shaped feeder (7) is arranged on the conveying pipeline (9).

3. A high temperature flue gas duct bag compound dust collector as claimed in claim 2, wherein: and a manual gate valve (6) is arranged at the position, close to the joint of the top end of the conveying pipeline (9) and the metal filter tube dust remover (4).

4. A high temperature flue gas duct bag dust collector as claimed in any one of claims 1 to 3, wherein: the inlet flue (1) is provided with a plug board (2).