CN2339871Y

CN2339871Y - Flue-pipe dust-controlling apparatus

Info

Publication number: CN2339871Y
Application number: CN 98208984
Authority: CN
Inventors: 韩文旗
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-10
Filing date: 1998-04-10
Publication date: 1999-09-22
Anticipated expiration: 2008-04-10

Abstract

The utility model discloses a flue pipe dust controlling device, which is composed of a motor, a dust collection tank, a sewage sedimentation tank and high pressure atomizing sprinkler heads. The utility model is characterized in that a fan is arranged in front of the atomizing sprinkler head in a fume inlet pipe, and the sewage sedimentation tank is provided with a water sucking pump for circulating water which can be used for dust collection of three high pressure atomizing sprinkler heads. The utility model solves the problems of the corrosion to the fan caused by acid fume and the cyclic usage of the sewage after deposition. Therefore, the utility model extends the service life of the fan and reduces the sewage pollution to environment.

Description

A kind of flue dust arrester

The utility model belongs to flue dedusting technology field, relates in particular to a kind of wet dust removal device of being made up of fountain head, sedimentation basin.

At present, the purifying and dedusting of boiler smoke is often adopted the water pouring of negative inspiratory pressure formula, the wet dust removal of water smoke, this dust arrester blower fan is arranged on the smoke outlet behind the spray nebulization dust, because smoke moisture height after treatment, and show acid, in the easy intrusion machine, make its very easily corrosion, reduction of service life (the general work life-span is about three months) during through blower fan; In addition,, make that the smoke distribution that enters in the dedusting tube is inhomogeneous, thereby make the deleterious of water spray and nebulization dust because the power of blower fan is big; The dedusting sewage of this water spray, atomizing only carries out just emitting behind the one-time dedusting, and this is not only a kind of waste to water resource, but also can cause environmental pollution.

The purpose of this utility model just provides a kind of blower fan long service life, the wet type fume dust remover of good dedusting effect and conserve water resource.

The purpose of this utility model realizes by following manner:

A kind of flue dust arrester, include blower fan 1, dedusting tank 5 and detention tank 14, described blower fan 1 is fixed in the gas approach place of dedusting tank 5, fume pipe 3 stretches in the dedusting tank 5, its import 8 decurvations, the first high-pressure atomization fountain head 2 is fixed in the fume pipe 3 behind the blower fan 1, in described dedusting tank 5, the upper fixed of fume pipe 3 has flue gas retaining grid 7, side is fixed with the direction second high-pressure atomization fountain head 4 down thereon, described dedusting tank is through bend pipe 6, vertical tube 12 is communicated with described detention tank 14, in described vertical tube 12, be installed with the 3rd high-pressure atomization fountain head 13 of water spray down, be fixed with at least one sewage isolated gate 17 in the described detention tank 14, blow-off pipe 11 is connected the sewage draining exit 9 of dedusting tank bottom with detention tank 14, pulsating pump 16 is installed in the cesspool away from dirt inlet, and through water supply line 10 respectively with first, two, three high-pressure

atomization fountain heads

2,4,13 are communicated with, the sidepiece of cesspool has exhaust outlet 15, the bottom is a ramped shaped, and the lower has mud cleaning eye 18.

Its additional technical feature is: fume pipe 3 stretches in the dedusting tank 5 and centre-lock.

Import 8 directions of fume pipe 3 down, angle [alpha] is 90 °-135 °.

Sewage draining exit 9 has a height h with dedusting tank 5 bottoms.

Distance h is 5-25cm.

The centre of flue gas shelves grid 7 is an activity bar shaped plate washer 20, and both sides are passage 19.

One side of sewage isolated gate 17 is connected with the sidewall of described sedimentation basin.

The wide W of the length L of isolated gate＞1/2 sedimentation basin.

Water in the sedimentation basin 14 is alkalescence or is limewash.

The utility model is compared with prior art, has following advantage: because blower fan is installed in the gas approach place, so avoided the erosion of acidic wet flue gas, prolonged its service life; Owing to extend into air inlet in the dedusting tube under shed, in dedusting tank, increased air shelves grid, so be evenly distributed when the flue gas of dust-laden is risen, improved the effect of the atomizing spray dedusting second time in jar.Because the water that is recovered to after the dedusting in the sedimentation basin is recycled,, alleviated the pollution of sewage to environment so improved utilization rate to water after precipitation clarification.

Be described further below in conjunction with the structural principle of accompanying drawing the wet boiler fume dust remover that the utility model proposed.

Fig. 1 is a wet boiler flue dust arrester structure principle chart;

Fig. 2 is flue gas shelves grid structure charts;

Fig. 3 is the plan structure figure of detention tank;

Fig. 4 is the side-looking structure chart of detention tank.

Be the structure principle chart of wet boiler fume dust remover as described in Figure 1; It comprises: air inlet pipe 3, blower fan 1, dedusting tank 5, bend pipe 6, vertical tube 12, detention tank 14, pulsating pump 16, be installed on fume pipe 3 through water supply line 10 with what water pump 16 was connected, high-pressure

atomization fountain head

2,4,13 in dedusting tank 5 and the vertical tube 12, and the flue gas shelves grid 7 in dedusting tank.

Its operation principle is: the dry ash dirt in the boiler sucks in the dedusting tank 5 through blower fan 1, at first through the dedusting of forward spraying water of the first high-pressure atomization fountain head 2, the dust sewage that forms flows in the dedusting tank 5 through gas approach 8, and the sewage that contains dust flows into the sedimentation basin that caustic lime water is housed 14 of sealing through blow-off pipe 11 from sewage draining exit 9.Flue gas in dedusting tank 5 after the first time, high-pressure atomization was sprayed water upwards rises equably through flue gas shelves grid 7, again through direction second time down behind the high-pressure atomization fountain head 4 reverse spraying and dedustings, flue gas is through bend pipe 6 and vertical tube 12 and be installed in the vertical tube 12 forward spraying and dedusting of direction the 3rd high-pressure atomization fountain head 13 down, the flue gas of its dedusting and dust water flow in the sedimentation basin 14 of sealing through vertical tube 12, and the wind speed of dustless flue gas upside in sedimentation basin 14 is discharged by exhaust outlet after alleviating chamber 21.In this device, blower fan 1 is difficult for having prevented the corrosion of blower fan 1 with moist flue gas contact before being installed on the first high-pressure atomization fountain head 2 in the air inlet pipe 3 of flue gas, has prolonged its service life.

Engagement is equipped with 3 sewage isolated gates 17 in detention tank 14, the one side only is connected with the side of detention tank 14, its length L is greater than 1/2 of the wide W of sedimentation basin, preferably being chosen as (as shown in Figure 3) between the 2/3-3/4 is of value to the precipitation and the clarification of sewage with the mobile distance that increases sewage, in last grid region, circulation pulsating pump 16 is installed away from the sewage import, through water supply line 10 same first, two, three high-pressure

atomization fountain heads

2,4,13 are communicated with, limewash through the clarification of post precipitation is recycled, save water resource, reached the purpose that reduces the sewage environmental pollution.

Stretch into the fume pipe 3 of dedusting tank 5 centres, its import 8 directions down, formed angle [alpha] is got between 90 °-130 °, preferably 90 °, so that flue gas can fill the air equably in dedusting tank 5, preventing to have the flue gas of dust and inwall that sewage is washed away dedusting tank influences its service life, preferably can leave the distance h of 5-25cm between sewage draining exit 9 and dedusting tank 5 bottoms, makes its bottom can have mud or sewage for a long time to alleviate sewage the washing away its bottom surface of ejection from import 8.

In dedusting tank 5, the centre of being equipped with as shown in Figure 2 is that movable plate washer 20 both sides are the flue gas shelves grid 7 of circular hole 19, the flue gas that has dust of rising more can be filled the air in jar equably,, increase dust removing effects so that the second high-pressure atomization fountain head 4 can more effectively be removed dust wherein.

As shown in Figure 4, the bottom of sedimentation basin is a ramped shaped, has mud cleaning eye 18 on the settlement of sewage pool wall of slope lowest part, and opening this hole can exclude the mud that is deposited in the pond at an easy rate.

The wet boiler fume dust remover of proposition described in the utility model has adopted three grades of high-pressure atomizations to spray water to the dedusting of flue gas, and its dust removing effects (comprises dust and SO ₂Deng material) effect can reach more than 98%, can be widely used in the dedusting of various boilers, and it also has the conserve water resource and alleviates the characteristics of sewage pollution in addition.

Claims

1, a kind of flue dust arrester, include blower fan (1), dedusting tank (5) and detention tank (14), it is characterized by the gas approach place that described blower fan (1) is fixed in dedusting tank (5), fume pipe (3) stretches in the dedusting tank (5), its import (8) decurvation, the first high-pressure atomization fountain head (2) is fixed in the fume pipe (3) behind the blower fan (1), in described dedusting tank (5), the upper fixed of fume pipe (3) has flue gas retaining grid (7), side is fixed with the direction second high-pressure atomization fountain head (4) down thereon, described dedusting tank is through bend pipe (6), vertical tube (12) is communicated with described detention tank (14), in described vertical tube (12), be installed with the 3rd high-pressure atomization fountain head (13) of water spray down, be fixed with at least one sewage isolated gate (17) in the described detention tank (14), blow-off pipe (11) is connected the sewage draining exit (9) of dedusting tank bottom with detention tank (14), pulsating pump (16) is installed in the cesspool away from dirt inlet, and through water supply line (10) respectively with first, two, three high-pressure atomization fountain heads (2,4,13) be communicated with, the sidepiece of cesspool has exhaust outlet (15), the bottom is a ramped shaped, and the lower has mud cleaning eye (18).

2, flue dust arrester as claimed in claim 1 is characterized in that described fume pipe (3) stretches in the dedusting tank (5) and centre-lock.

3, flue dust arrester as claimed in claim 1 or 2, import (8) direction that it is characterized in that described fume pipe (3) down, angle (α) is 90 °-135 °.

4, flue dust arrester as claimed in claim 1 is characterized in that a height (h) is arranged at the same dedusting tank of described sewage draining exit (9) (5) bottom.

5, flue dust arrester as claimed in claim 4 is characterized in that described distance (h) is 5-25cm.

6, flue dust arrester as claimed in claim 1, the centre that it is characterized in that described flue gas shelves grid (7) are activity bar shaped plate washer (20), and both sides are passage (19).

7, flue dust arrester as claimed in claim 1 is characterized in that described sewage isolated gate

(17) a side is connected with the sidewall of described sedimentation basin.

8,, it is characterized in that wide (W) of length (L)＞1/2 sedimentation basin of described isolated gate as claim 1 or 7 described flue dust arresters.

9, flue dust arrester as claimed in claim 1 is characterized in that the water in the described sedimentation basin (14) is alkalescence or is limewash.