CN203389489U

CN203389489U - Special purification device for combustion tail gas of biomass boiler

Info

Publication number: CN203389489U
Application number: CN201320405768.8U
Authority: CN
Inventors: 林祖顺; 林旭
Original assignee: FUJIAN LVYUAN NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: FUJIAN LVYUAN NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2013-07-09
Filing date: 2013-07-09
Publication date: 2014-01-15
Anticipated expiration: 2023-07-09

Abstract

The utility model relates to a boiler and in particular relates to a special purification device for combustion tail gas of a biomass boiler. The special purification device for the combustion tail gas of the biomass boiler comprises a shell, a gas feeding pipe, a gas discharging pipe, a partition plate and a spraying device, wherein a slag discharging opening is formed in the lower part of the shell. The device is characterized in that the spraying device consists of a spraying pipe and two flow guide plates which are arranged above the spraying pipe and form an included angle; spraying holes of the spraying pipe are uniformly formed in two sides of the top end of the spraying pipe at intervals; the flow guide plates are fixed over the spraying pipe on the top of the inner side of the shell; the spraying pipe is connected with a water pump; liquids in the spraying holes can be sprayed to the surfaces of the flow guide plates. Although the purification device is slightly modified and the cost is scarcely increased, an existing linear spraying system is improved to be a surface-type spraying system; two water curtains still exist, so that the dust removal effect is enhanced; due to the reasonable distribution of flow guide sheets and a gas passing chamber, the moving direction of gas is continuously changed, the disturbance degree of the gas is improved, and the dust removal effect is further enhanced.

Description

The special purification device of biomass fuel boiler combustion tail gas

Technical field

The utility model relates to boiler, relates in particular to the special purification device of the boiler combustion tail gas of burning solid biomass fuel.

Background technology

So-called biomass fuel mostly is stem shape crops, peanut shell, bark, sawdust and solid waste (furfural dregs, the edible fungi residues etc.) fuel through being processed into, mostly be strip or bulk, in its burnt gas, the content of sulphur is less, so its tail gas only need to carry out dedusting through purifier, smoke abatement is processed, the discharge standard of formulating to reach country.Existing purifier as shown in Figure 1, by housing 4, air inlet pipe 1, escape pipe 2, dividing plate 3, shower 5 forms, housing Nei bottom retaining, with water pump, water extraction being supplied with to shower 5 recycles, conventionally there are 3 dividing plates 3 to form four Room, housing 4 bottoms have slag-drip opening 41, one, dividing plate is fixed on housing 4 belows, another piece is fixed on top, interval is fixed, dividing plate between the first Room and the second Room is fixed on below, top communicates, tail gas trend as shown by arrows in FIG., tail gas enters purifier from air inlet pipe 1, from the gap of dividing plate top, enter the second Room, the top of the second Room is fixed with shower 5, shower 5 bores row's aperture by water pipe interval and forms, the tail gas that shower 5 forms in the thin water impact of multiple tracks the second Room, in the pond of bulky grain in tail gas below the impulse force of water drops to, dividing plate 3 between the second Room and San chamber is fixed on top, below communicates, tail gas enters San chamber from the below of dividing plate 3, also there is shower 5 top of San chamber, the exhaust gas channel sectional area of each dividing plate is greater than the sectional area of chimney, smooth and easy to guarantee exhaust emissions, tail gas is constantly roundabout in purifier, reach dedusting, the object of smoke abatement, finally from the escape pipe 2 of fourth ventricle below, discharge.Because the water outlet of shower 5 is intervals, inhomogeneous to the shower of tail gas, some tail gas is not flushed to, and has affected final dedusting, smoke abatement effect.

Utility model content

The purpose of this utility model is to overcome the shortcoming that above-mentioned purifier exists, and a kind of special purification device that can effectively promote the biomass fuel boiler combustion tail gas of dedusting, smoke abatement effect is provided.

Technical solutions of the utility model are achieved in that a kind of special purification device of biomass fuel boiler combustion tail gas, comprise housing, air inlet pipe, escape pipe, dividing plate, spray equipment, lower housing portion has slag-drip opening, its main points are that described spray equipment is angle deflector by shower and its two of top and forms, the both sides on shower top are evenly opened at the spray orifice interval of shower, in the vertical direction of shower, the top of housing inner side is fixed with deflector, shower and water pump join, and the liquid in spray orifice can be sprayed onto the surface of deflector.

The utility model is to improve on existing purifier, existing simple shower is made into the spray equipment of shower and deflector composition, the shower water that is originally wire is evenly scattered on deflector, present a water curtain, flowing water is modified into plane by wire, and a spray equipment is comprised of twice water curtain, as long as therefore flow to the next tail gas of crossing smoke-box, all to pass twice water curtain, particle contained in tail gas is easily got to by water, more easily drop below pond in, under the impact and suction-operated of water, dedusting, smoke abatement is effective.

Center line and the deflector of spray orifice have intersection point.The water that guarantees like this spray orifice can be got on deflector, and intersection point is better above more at deflector, and the water curtain of formation is more even.

Dividing plate is comprised of with vertical with it midfeather diaphragm plate, diaphragm plate and 2-3 piece midfeather are divided into 6-8 by housing inner chamber and cross smoke-box, tail gas is alternately crossed the roundabout warp of smoke-box from each and by escape pipe, is discharged later by top, below from air inlet pipe enters, when tail gas passes through from dividing plate below, on its dividing plate, be fixed with spray equipment.

The smoke-box of crossing of original single layout is modified into double layout, compact conformation, and the flow direction of gas changes more, from original simple upper and lower motion, bottom horizontal flow sheet only has a direction, and now except upper and lower motion, also will constantly carry out 90 degree turns round, increase the disturbance of gas, gas disturbance is conducive to wherein particle to be collided each other, assembles and fall, and dedusting, smoke abatement are effective.

A diaphragm plate and 2 midfeathers are divided into 6 by housing inner chamber and cross smoke-box, the upper end of diaphragm plate and the inwall of housing are affixed, lower end is immersed in the water of lower housing portion, diaphragm plate top has through hole, adjacent two mistake smoke-boxes are communicated, through hole interval is fixed with the flow deflector with diaphragm plate bevel, tail gas is from air inlet pipe enters the first Room, by the flow deflector guiding on the through hole of the diaphragm plate top between the first Room and the second Room, enter the second Room, midfeather upper end between the second Room and San chamber and the inwall of housing are affixed, lower end is open, there is spacing with the liquid level of housing below, below midfeather, be fixed with a pair of angle deflector that is, below deflector, be fixed with shower, center line and the deflector of the spray orifice of shower have intersection point, make the liquid of shower ejection can get on deflector, tail gas enters San chamber from the below of midfeather, flow deflector from the through hole of San chamber diaphragm plate top guiding enters fourth ventricle again, midfeather between the first Room and fourth ventricle is sealing, do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather between Wu chamber, tail gas enters Wu chamber from the below of midfeather, flow deflector from the through hole of Wu chamber diaphragm plate top guiding enters Liu chamber again, escape pipe stretches into Liu Shi bottom the tail gas purifying is discharged.

Flow deflector is conducive to gas and forms rotation, increases disturbance degree, and the water of shower is beaten on deflector, then is uniform plane water curtain while being flowed down by deflector.

A diaphragm plate and 3 midfeathers are divided into 8 by housing inner chamber and cross smoke-box, the upper end of diaphragm plate and the inwall of housing are affixed, lower end is immersed in the water of lower housing portion, top has through hole, adjacent two mistake smoke-boxes are communicated, through hole interval is fixed with the flow deflector with diaphragm plate bevel, tail gas is from air inlet pipe enters the first Room, by the flow deflector guiding on the through hole of the diaphragm plate top between the first Room and the second Room, enter the second Room, midfeather upper end between the second Room and San chamber and the inwall of housing are affixed, lower end is open, there is spacing with the liquid level of housing below, below midfeather, be fixed with a pair of angle deflector that is, below deflector, be fixed with shower, center line and the deflector of the spray orifice of shower have intersection point, make the liquid of shower ejection can get on deflector, tail gas enters San chamber from the below of midfeather, flow deflector from the through hole of San chamber diaphragm plate top guiding enters fourth ventricle again, midfeather between the first Room and fourth ventricle is sealing, do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather between Wu chamber, tail gas enters Wu chamber from the below of midfeather, flow deflector from the through hole of Wu chamber diaphragm plate top guiding enters Liu chamber again, midfeather between fourth ventricle and Liu chamber is sealing, do not communicate, same tail gas enters Qi chamber from the below of midfeather, from diaphragm plate, enter Ba chamber again, escape pipe stretches into Ba Shi bottom the tail gas purifying is discharged.

In like manner also can increase again or reduce according to the difference of incendiary material and emission request the quantity of dividing plate.

The utility model is changed few, increasing hardly cost but makes the spray system progress of existing wire become planar, or twice water curtain, improve dust removing effects, reasonable layout by flow deflector and mistake air chamber makes gas constantly change the direction of motion, increase the disturbance degree of gas, further intensified dust removal effect.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing purifier

Fig. 2 is structural representation of the present utility model

Fig. 3 is the structural representation of spray equipment

Fig. 4 is the enlarged drawing of shower

Fig. 5 is the structural representation of embodiment 2

Fig. 6 is the top view of Fig. 5

Fig. 7 is the structural representation of embodiment 3

1 air inlet pipe 2 escape pipe 3 dividing plate 31 diaphragm plate 311 flow deflector 312 through hole 32 midfeather 4 housing 41 slag-drip opening 5 shower 51 spray orifice 6 deflector 7 water pumps.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail, can makes professional and technical personnel more understand the utility model, following embodiment is modified, it is all possible adding and replacing, and does not all exceed protection domain of the present utility model.

Embodiment 1, as Fig. 2, 3, shown in 4, a kind of special purification device of biomass fuel boiler combustion tail gas, to improve on existing purifier, existing simple shower is made into the spray equipment of shower 5 and deflector 6 compositions, specifically as shown, comprise housing 4, air inlet pipe 1, escape pipe 2, dividing plate 3, spray equipment, housing 4 bottoms have slag-drip opening 41, wherein spray equipment is angle deflector 6 by shower 5 and its two of top and forms, the both sides on shower 5 tops are evenly opened at spray orifice 51 intervals of shower 5, top in vertical direction housing 4 inner sides of shower 5 is fixed with deflector 6, the center line of spray orifice 51 and deflector 6 have intersection point, shower 5 joins with water pump, hydraulic pressure size is determined by the length of shower 5, as long as can guarantee that each spray orifice 51 all has water to go out, the utility model hydraulic pressure is 3 kilograms, liquid in spray orifice 51 can be sprayed onto the surface of deflector 6, the conventional interior direct welding angle steel of housing 4 that can be above shower 5, the angular bisector of angle steel overlaps with the symmetry axis of spray orifice 51, spacing between shower 5 and deflector 6 is at 8-30mm, the angle steel length of side is 60mm, tail gas trend as shown by arrows in FIG..It is same as the prior art that all the other do not state part.The utility model evenly scatters the shower water that is originally wire on deflector, present a water curtain, by wire, be modified into planar, and a spray equipment is comprised of twice water curtain, therefore as long as flow to the next tail gas of crossing smoke-box, all to pass twice water curtain, particle contained in tail gas is easily got to by water, more easily drop below pond in, under the impact and suction-operated of water, good dedusting effect.

Embodiment 2, as Fig. 5, shown in 6, on the basis of embodiment 1, improve, dividing plate 3 is comprised of with vertical with it midfeather 32 diaphragm plate 31, a diaphragm plate 31 is divided into 6-8 with 2-3 piece midfeather 32 by housing 4 inner chambers and crosses smoke-box, tail gas trend as shown by arrows in FIG., be tail gas from air inlet pipe 1 enters alternately by above or below from each, cross the roundabout warp of smoke-box and by escape pipe 2, discharged later, when tail gas passes through from dividing plate below, its dividing plate below is fixed with spray equipment, in figure, a

diaphragm plate

31 and 2 midfeathers 32 are divided into 6 smoke-boxes excessively by housing 4 inner chambers, the inwall of the upper and housing 4 of diaphragm plate 31 is affixed, lower end is immersed in the water of lower housing portion, top has through hole 312, adjacent two mistake smoke-boxes are communicated, cross the sectional area that cigarette sectional area is greater than air inlet pipe 1, through hole 312 intervals are fixed with the flow deflector 311 with diaphragm plate 31 bevels, tail gas is from air inlet pipe 1 enters the first Room, flow deflector 311 by diaphragm plate 31 tops between the first Room and the second Room enters the second Room, midfeather 32 upper ends between the second Room and San chamber and the inwall of housing 4 are affixed, lower end is open, there is spacing with the liquid level of housing 4 belows, cross the sectional area that cigarette sectional area is greater than air inlet pipe 1, below midfeather, be fixed with a pair of angle deflector 6 that is, below deflector 6, be fixed with shower 5, center line and the deflector 6 of the spray orifice 51 of shower 5 have intersection point, the liquid of shower 5 ejections can be got on deflector 6, shower 5 joins with water pump 7, keep 3.5 kilograms of hydraulic pressure, shower 5 is folded into the below of second midfeather, shower below deflector 6 has boring, remainder is not holed, tail gas enters San chamber from the below of midfeather 32, from the flow deflector 311 of diaphragm plate 31 tops, San chamber, enter fourth ventricle again, midfeather 32 between the first Room and fourth ventricle for sealing, (fix by midfeather upper end, lower end is immersed in the water), do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather 32 between Wu chamber, tail gas enters Wu chamber from the below of midfeather 32, from the flow deflector 311 of diaphragm plate 31 tops, Wu chamber, enter Liu chamber again, escape pipe 2 stretches into Liu Shi bottom the tail gas purifying is discharged, (1) in Fig. 6-(6) represent the first Dao Liu chamber.It is identical with upper example that all the other do not state part.

Embodiment 3, as shown in Figure 7, on the basis of embodiment 2, to increase a midfeather, a

diaphragm plate

31 and 3 midfeathers 32 are divided into 8 smoke-boxes excessively by housing 4 inner chambers, the inwall of diaphragm plate 31 upper end and housing 4 is affixed, lower end is immersed in the water of lower housing portion, top has through hole 312, adjacent two mistake smoke-boxes are communicated, through hole 312 intervals are fixed with the flow deflector 311 with diaphragm plate 31 bevels, tail gas is from air inlet pipe 1 enters the first Room, by flow deflector 311 guiding on the through hole of diaphragm plate 31 tops between the first Room and the second Room, enter the second Room, midfeather 32 upper ends between the second Room and San chamber and the inwall of housing 4 are affixed, lower end is open, there is spacing with the liquid level of housing 4 belows, below midfeather, be fixed with a pair of angle deflector 6 that is, below deflector 6, be fixed with shower 5, center line and the deflector 6 of the spray orifice 51 of shower 5 have intersection point, the liquid of shower 5 ejections can be got on deflector 6, tail gas enters San chamber from the below of midfeather 32, flow deflector from the through hole of diaphragm plate 31 tops, San chamber 311 guiding enter fourth ventricle again, midfeather 32 between the first Room and fourth ventricle is sealing, do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather 32 between Wu chamber, tail gas enters Wu chamber from the below of midfeather 32, flow deflector from the through hole of diaphragm plate 31 tops, Wu chamber 311 guiding enter Liu chamber again, midfeather 32 between fourth ventricle and Liu chamber is sealing, do not communicate, same tail gas enters Qi chamber from the below of midfeather 32, from diaphragm plate, enter Ba chamber again, escape pipe 2 stretches into Ba Shi bottom the tail gas purifying is discharged.Water pump 7 joins with middle shower 5, by threeway and another two showers 5, joins, and (1) in Fig. 6-(8) represent the first Dao Ba chamber.It is identical with upper example that all the other do not state part.

Claims

1. the special purification device of a biomass fuel boiler combustion tail gas, comprise housing (4), air inlet pipe (1), escape pipe (2), dividing plate (3), spray equipment, housing (4) bottom has slag-drip opening (41), it is characterized in that, described spray equipment is angle deflector (6) by shower (5) and its two of top and forms, the both sides on shower (5) top are evenly opened at spray orifice (51) interval of shower (5), top inside the vertical direction housing (4) of shower (5) is fixed with deflector (6), shower (5) joins with water pump, liquid in spray orifice (51) can be sprayed onto the surface of deflector (6).

2. the special purification device of a kind of biomass fuel boiler combustion tail gas according to claim 1, is characterized in that, the center line of spray orifice (51) and deflector (6) have intersection point.

3. the special purification device of a kind of biomass fuel boiler combustion tail gas according to claim 1, it is characterized in that, dividing plate (3) is comprised of with vertical with it midfeather (32) diaphragm plate (31), a diaphragm plate (31) is divided into 6-8 with 2-3 piece midfeather (32) by housing (4) inner chamber and crosses smoke-box, tail gas from air inlet pipe (1) enters alternately by above or below from each, cross the roundabout warp of smoke-box and by escape pipe (2), discharged later, when tail gas passes through from dividing plate below, its dividing plate below is fixed with spray equipment.

4. the special purification device of a kind of biomass fuel boiler combustion tail gas according to claim 3, it is characterized in that, a diaphragm plate (31) is divided into 6 with 2 midfeathers (32) by housing (4) inner chamber and crosses smoke-box, the inwall of the upper end of diaphragm plate (31) and housing (4) is affixed, lower end is immersed in the water of lower housing portion, top has through hole (312), adjacent two mistake smoke-boxes are communicated, through hole (312) interval is fixed with the flow deflector (311) with diaphragm plate (31) bevel, tail gas enters the first Room from air inlet pipe (1), by flow deflector (311) guiding on the through hole of diaphragm plate (31) top between the first Room and the second Room, enter the second Room, midfeather (32) upper end between the second Room and San chamber and the inwall of housing (4) are affixed, lower end is open, there is spacing with the liquid level of housing (4) below, below midfeather, be fixed with a pair of angle deflector (6) that is, in the below of deflector (6), be fixed with shower (5), center line and the deflector (6) of the spray orifice (51) of shower (5) have intersection point, the liquid of shower (5) ejection can be got on deflector (6), tail gas enters San chamber from the below of midfeather (32), flow deflector (311) from the through hole of San chamber diaphragm plate (31) top guiding enters fourth ventricle again, midfeather between the first Room and fourth ventricle (32) is sealing, do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather (32) between Wu chamber, tail gas enters Wu chamber from the below of midfeather (32), flow deflector (311) from the through hole of Wu chamber diaphragm plate (31) top guiding enters Liu chamber again, escape pipe (2) stretches into Liu Shi bottom the tail gas purifying is discharged.

5. the special purification device of a kind of biomass fuel boiler combustion tail gas according to claim 3, it is characterized in that, a diaphragm plate (31) is divided into 8 with 3 midfeathers (32) by housing (4) inner chamber and crosses smoke-box, the inwall of the upper end of diaphragm plate (31) and housing (4) is affixed, lower end is immersed in the water of lower housing portion, top has through hole (312), adjacent two mistake smoke-boxes are communicated, through hole (312) interval is fixed with the flow deflector (311) with diaphragm plate (31) bevel, tail gas enters the first Room from air inlet pipe (1), by flow deflector (311) guiding on the through hole of diaphragm plate (31) top between the first Room and the second Room, enter the second Room, midfeather (32) upper end between the second Room and San chamber and the inwall of housing (4) are affixed, lower end is open, there is spacing with the liquid level of housing (4) below, below midfeather, be fixed with a pair of angle deflector (6) that is, in the below of deflector (6), be fixed with shower (5), center line and the deflector (6) of the spray orifice (51) of shower (5) have intersection point, the liquid of shower (5) ejection can be got on deflector (6), tail gas enters San chamber from the below of midfeather (32), flow deflector (311) from the through hole of San chamber diaphragm plate (31) top guiding enters fourth ventricle again, midfeather between the first Room and fourth ventricle (32) is sealing, do not communicate, fourth ventricle is identical with the midfeather structure between the second Room and San chamber with the midfeather (32) between Wu chamber, tail gas enters Wu chamber from the below of midfeather (32), flow deflector (311) from the through hole of Wu chamber diaphragm plate (31) top guiding enters Liu chamber again, midfeather (32) between fourth ventricle and Liu chamber is sealing, do not communicate, same tail gas enters Qi chamber from the below of midfeather (32), from diaphragm plate, enter Ba chamber again, escape pipe (2) stretches into Ba Shi bottom the tail gas purifying is discharged.