CN104436927B - A kind of micro-hole jet formula sleeve pipe dust arrester - Google Patents

Abstract

The invention discloses a microporous jet type casing dust removal device, which belongs to the technical field of dust removal equipment for industrial kilns, and comprises a fan, a water tank and a gas collection component. The water outlet of the component is connected to the water tank through the downpipe to form a water circulation loop; the fan is connected to the intake end of the gas collection component through the smoke inlet pipe; the gas collection component includes a gas collection box and several microporous jet tubes, The gas collection box is arranged on the top of the microhole jet tube, and a water jacket is coaxially sleeved outside each microhole jet tube, and each water jacket is connected through a connecting pipe. The invention can effectively remove fine particles in flue gas, avoid secondary pollution in the process of cleaning water, have high removal efficiency of fine particles, compact structure, energy saving and environmental friendliness.

Description

A microhole jet type sleeve dust removal device

technical field

The invention belongs to the technical field of dust removal equipment for industrial kilns, and in particular relates to a microhole jet type casing dust removal device.

Background technique

In my country's industrial furnaces, coal-fueled industrial furnaces account for a large proportion, accounting for 64% of the total number of industrial furnaces in the country. The flue gas emitted by coal-fired industrial furnaces contains more fine particles such as carbon black and dust. These fine particles contain more toxic substances such as heavy metals that are harmful to the human body, seriously polluting the air quality and endangering the health of residents.

At present, the vast majority of medium-scale industrial furnaces have installed dust removal equipment on the flue, and the more commonly used ones are bag filter and electrostatic precipitator. The price of the bag filter is moderate, but it covers a large area, consumes a lot of power, the filter bag often needs to be replaced, and the maintenance cost is high. The electrostatic precipitator needs to design the charging system in stages to remove dust particles of different particle sizes, so it needs to adopt a complex structure to improve the removal efficiency, and the cost is high. There are also some industrial kilns equipped with water film dust collectors on the flue, but a large amount of water is required to form a water film, which is suitable for places close to sufficient water sources. The power consumption is also high, water pollution is serious, and the cost of post-water treatment is high. Therefore, today, when the country vigorously advocates energy saving and environmental protection, it is necessary to propose a dust removal device with low cost and high removal efficiency.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the object of the present invention is to provide a micro-hole jet casing dust removal device with low power consumption and high removal efficiency of fine particles.

The present invention is achieved through the following technical solutions:

A microporous jet type casing dust removal device, including a fan, a water tank and a gas collection component. Water circulation circuit; the fan is connected to the air inlet of the gas collection assembly through the smoke inlet pipe;

The gas collection assembly includes a gas collection box and several microporous jet tubes, the gas collection box is arranged on the top of the microporous jet tube, and a water jacket is coaxially sleeved outside each microporous jet tube, and each water jacket passes through The connecting pipes are connected.

The microporous jet tube has a length of 25-40 cm and an inner diameter of 2-3.5 cm.

The microholes of the microporous jet tube are arranged alternately on the tube body, the diameter of the microholes is 1 mm, and the distance between the microholes is 1-3 cm.

The microporous jet tube is a plexiglass tube or a steel tube.

The number of microporous jet tubes is 3, and the top of the two microporous jet tubes near the fan side is provided with a gas collecting box, and the two microporous jet tubes are connected through the gas collecting box, and the water jacket near the fan A water inlet connected to the upper water pipe is provided; a smoke outlet pipe is provided on the top of a microporous jet pipe near the side of the water tank, and a water outlet connected to the lower water pipe is provided outside the water jacket on this side.

A water collecting box is arranged at the bottom of the gas collecting assembly, and the water collecting box is connected with the water tank through the sewage pipe.

A first cut-off valve and a gas flow meter are sequentially arranged on the pipeline from the blower fan to the flue gas inlet pipe of the gas collection assembly.

A pressure gauge, a liquid flow meter, a second shut-off valve and a check valve are sequentially arranged on the downwater pipeline from the gas-collecting assembly to the water tank.

A circulation pump is also arranged on the downwater pipeline between the check valve and the water tank.

The water tank is provided with a filter screen; the water tank is also provided with an overflow pipe and a water supply pipe, and the overflow pipe and the water supply pipe are respectively provided with an overflow valve and a water supply valve.

Compared with the prior art, the present invention has the following beneficial technical effects:

The microporous jet type casing dust removal device of the present invention introduces flue gas into the gas collection assembly through the fan, and the gas collection assembly and the water tank form a water circulation loop to form an automatic water circulation. The water consumption is very low, and some of the gas collection assemblies There is a water jacket outside the microporous jet pipe, and the water flow in the water jacket can penetrate into the small holes on the flue gas pipe to form multiple intersecting jets, increase the contact area between the flue gas and the jet water column, and dissipate the flue gas. Fine particles are washed clean. The invention can effectively remove fine particles in flue gas, avoid secondary pollution in the process of cleaning water, have high removal efficiency of fine particles, compact structure, energy saving and environmental friendliness.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the structure of the microporous jet tube of the present invention.

Among them, 1 is the fan; 2 is the first cut-off valve; 3 is the gas flow meter; 4 is the gas inlet pipe; 5 is the water inlet; 6 is the water jacket; 7 is the gas collection box; 8 is the connecting pipe; 9 is the micro 10 is the water outlet; 11 is the sewage pipe; 12 is the outlet pipe; 13 is the water pipe; 14 is the water valve; 15 is the water tank; 16 is the filter screen; 17 is the water pipe; 18 is the circulation pump; 19 is the 20 is the second cut-off valve; 21 is the liquid flow meter; 22 is the pressure gauge; 23 is the water collection tank; 24 is the flue gas pipe; 25 is the overflow valve; 26 is the overflow pipe.

detailed description

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, the present invention comprises blower fan 1, water tank 15 and gas collection assembly, and water tank 15 is connected with the water inlet end of gas collection assembly through upper water pipe 17, and the water outlet end of gas collection assembly is connected with water tank 15 through downwater pipe 12, A water flow circulation loop is formed; the fan 1 is connected to the inlet end of the gas collection assembly through the smoke inlet pipe 4; the gas collection assembly includes a gas collection box 7 and several microporous jet tubes 9, and the gas collection box 7 is arranged On the top of the jet tube 9 , a water jacket 6 is coaxially sleeved outside each microporous jet tube 9 , and each water jacket is connected through a connecting pipe 8 . Preferably, the present invention includes three microporous jet tubes 9 and three water jackets 6 . A first cut-off valve 2 and a gas flowmeter 3 are installed on the gas inlet pipe 4; A water inlet 10 is installed on the leftmost water jacket 6, and a water outlet 5 is installed on the right bottom of the rightmost water jacket 6. The three water jackets 6 are connected with a connecting pipe 8, and the two micro The upper part of the hole jet pipe 9 is communicated with the gas collection box 7, and the three microhole jet pipes 9 are connected through the water collection box 23 below it, and the top of the leftmost microhole jet pipe 9 is a flue gas pipe 24. The water outlet 10 is connected to one end of the water pipe 12, and the other end of the water pipe 12 is connected to the water tank 15. The water filling pipe 13 is installed above the water tank 15. The water filling pipe is provided with a water filling valve 14. The top of the water tank 15 is also provided with an overflow pipe 26. , The overflow pipe 26 is provided with a water escape valve 25 and a sewage pipe 11, and the water collecting tank 23 communicates with the water tank 15 through the sewage pipe 11. The right side of the water tank 15 is connected with an upper water pipe 17, on which a circulation pump 18, a check valve 19, a stop valve 20, a liquid flow meter 21 and a pressure gauge 22 are sequentially installed.

Referring to FIG. 2 , it is a schematic structural diagram of the micro-hole jet tube 9 . In this embodiment, a plexiglass tube or steel pipe with a length of 30 cm and an internal diameter of 2.5 cm is used to punch holes alternately within 3 cm from the upper and lower ends of the tube, with a diameter of 1 mm and a spacing of 1.5 cm.

The microhole jet type sleeve dust removal device of the present invention, when in use:

The flue gas is introduced into the flue gas inlet pipe 4 by the fan 1, and flows through the microporous jet pipe 9 coaxially connected in the water jacket 6 after the appropriate flow rate is given by the first stop valve 2 and the gas flow meter 3. The water in the sleeve 6 penetrates the small holes on the microporous jet tube 9 to form a jet, and the smoke is in contact with the jet water column, which can effectively remove the fine particles in the smoke. The cleaned flue gas flows out from the flue gas outlet pipe 24 . The bottoms of the three microporous jet tubes 9 are uniformly connected on the top of the water collection tank 23, and the bottom of the water collection tank 23 is connected with the sewage pipe 11, so that the water with fine particles in the microporous jet tubes 9 can be introduced into the water tank 15, and the water tank The top of 5 is equipped with filter screen 16, can filter on it fine particles, clean water then enters in the water tank 15, is pumped in the upper water pipe 17 by circulation pump 18 pressure. The circulating pump 18 is installed on the upper water pipe 17, meanwhile, the upper water pipe 17 is also equipped with a liquid flow meter 21, a pressure gauge 22 and a check valve 19, which can adjust the water pressure and water flow in the water jacket 6 to prevent water from flowing backward . A water adding pipe 13 is installed on the water tank 15, and a water adding valve 14 is installed on the water adding pipe 13, which is used for adding water to the system. Also be equipped with overflow pipe 26 on water tank 15, overflow valve 25 is installed on overflow pipe 26, is used for getting rid of the air when adding water.

Claims (8)

1. a micro-hole jet formula sleeve pipe dust arrester, it is characterised in that include blower fan (1), water tank (15) And collection pneumatic module, water tank (15) is connected by the water inlet end of upper hose (17) with collection pneumatic module, collection The water side of pneumatic module is connected with water tank (15) by downcomer (12), forms water circulation loop； Blower fan (1) is connected with the inlet end of collection pneumatic module by entering fume pipe (4)；

Described collection pneumatic module includes 3 micro hole spraying pipes (9), near two micropores of blower fan (1) side The top of jet pipe is provided with plenum chamber (7), and two micro hole spraying pipes are connected by plenum chamber (7), The outside coaxial sleeve of going back of each micro hole spraying pipe (9) is provided with water jacket (6), and each water jacket is by connecting tube (8) It is connected；A length of the 25～40cm of micro hole spraying pipe (9), internal diameter is 2～3.5cm；

Water jacket near blower fan (1) is provided with the water inlet (5) being connected with upper hose (17)；Near water The top of one micro hole spraying pipe of case (15) side is provided with out fume pipe (24), and outside the water jacket of this side Portion is provided with the outlet (10) being connected with downcomer (12).

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 1, it is characterised in that The micropore of described micro hole spraying pipe (9) is crisscross arranged on body, and the aperture of micropore is 1mm, micropore Between distance be 1～3cm.

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 1, it is characterised in that Described micro hole spraying pipe (9) is lucite tube or steel pipe.

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 1, it is characterised in that Being provided with header tank (23) at gas collection component bottom, header tank (23) is by soil pipe (11) and water tank (15) It is connected.

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 1, it is characterised in that To the pipeline entering fume pipe (4) of collection pneumatic module, it is being sequentially provided with the first stop valve (2) from blower fan (1) With gas flowmeter (3).

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 5, it is characterised in that To the downcomer pipeline of water tank (15), it is sequentially provided with Pressure gauge (22), fluid flowmeter at collection pneumatic module (21), the second stop valve (20) and non-return valve (19).

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 6, it is characterised in that Circulating pump (18) it is additionally provided with on downcomer pipeline between non-return valve (19) and water tank (15).

A kind of micro-hole jet formula sleeve pipe dust arrester the most according to claim 1, it is characterised in that Filter screen (16) it is provided with in described water tank (15)；It is additionally provided with overflow pipe (26) on water tank (15) and adds water Pipe (13), overflow pipe (26) and filler pipe (13) are provided with spilling water valve (25) and priming valve (14) respectively.