CN2910335Y

CN2910335Y - Large capacity flue gas desulfurizer

Info

Publication number: CN2910335Y
Application number: CN 200620051174
Authority: CN
Inventors: 杨健
Original assignee: Individual
Current assignee: Hunan Lunan Desulfurization & Denitration Technology Co Ltd
Priority date: 2006-06-01
Filing date: 2006-06-01
Publication date: 2007-06-13
Anticipated expiration: 2016-06-01

Abstract

The utility model discloses a large capacity flue gas desulfurizer, which comprises an entrance equipment of smoke, a desulfurizing tower and a sediment chamber, wherein the desulfurizing tower comprises a dirt removing section with a spray water disposal device and a lattice bar plate, a desulfurizing purifying section with a spray water disposal device and revolving flow tower plate, a dehydration demist section with a centrifugal dehydrator-flow conducting cone-plate dismantling demister-liquid blocking ring. At least two desulfurizing towers are provided, and each desulfurizing tower is arranged with a smoke balance distribution apparatus. The revolving flow tower plate has two direction guiding loops. The dehydration loop of the centrifugal dehydrator has at least two loops. The utility model adds not only the numbers of the desulfurizing tower, but also the increases the capacity of single tower, therefore, the overall capacity can be qualified for a plenty of burning coal, fuel boiler and large industrial stove of large volume of smoke, and the effect of desulfurizing and dirt removing can reach the national standards, and widely applicable for industrial waste gas purification and treatment of industries such as fire-electricity, metallurgy, colored, chemicals, petroleum and mine.

Description

Big capacity flue gas desulfurization device

Technical field

The utility model relates to a kind of big capacity flue gas desulfurization device.

Background technology

Present known wet-type rotational flow desulphurization plant is by a gas approach, and the outer expansion chamber of desulfurizing tower and desulfurizing tower forms, and desulfurizing tower be individual pen rotating stream tray, spray water distribution system, individual pen dehydrator composition from bottom to top.Continuous development along with China's industry, the fire coal of some big exhaust gas volumns, oil burning boiler and large scale industry stove use more and more, therefore how the flue gas desulfurization device of existing structure is obviously fallen behind, and big exhaust gas volumns such as industrial furnace being handled etc. is present problem demanding prompt solution.

The utility model content

The big capacity flue gas desulfurization device that provides a kind for the treatment of capacity big, effective is provided the purpose of this utility model.

This big capacity flue gas desulfurization device that the utility model provides comprises being dedusting area, the desulfurizing and purifying district that three floor spray water-distributing device and rotating stream tray are arranged that two-layer spray water-distributing device is arranged, the dehydrating demisting district that centrifuge dehumidifier is arranged in flue gas access to plant, desulfurizing tower, expansion chamber, the desulfurizing tower from bottom to up in turn; Described desulfurizing tower has two at least, flue gas equalizing distributor of per two desulfurizing towers configuration, and each flue gas equalizing distributor forms by a gas approach is isolated into two Contiuum type by-pass flues, and every by-pass flue is communicated to a desulfurizing tower; Under the two-layer spray water-distributing device of described dedusting area one deck flase floor is arranged respectively, flase floor is made up of periphery ring and many grating pipes, and the periphery ring diameter is suitable with desulfurizing tower tower body internal diameter, and the grating pipe level is uniform to be fixed in the periphery ring; The rotating stream tray in described desulfurizing and purifying district heart blind plate periphery therein has two circle guide collar at least; Described spray water-distributing device has last lower support and is contained in stem stem between lower support, the stem stem epimere is with the water service pipe of band train wheel bridge, hypomere is equipped with the adjustable lower plate of setting height(from bottom), water service pipe communicates with water inlet pipe, and train wheel bridge has an adjustable gap between water service pipe lower end and lower plate, absorption liquid is flowed out from described gap to water service pipe by water inlet pipe; In the described dehydrating demisting district, the centrifuge dehumidifier dehydration circle of heart blind plate periphery therein has two circles at least, the band deflection cone of two taper seats is up and down arranged above the blind plate of the center of centrifuge dehumidifier, described adjacent between two taper seats up and down with diametric plane of the big end, there is the flap demister top of described deflection cone, this flap demister is made up of enclosure and all multifolded plates of being fixed in the enclosure, described flap is converted into and has the hook-shaped of V-type collecting tank, above the flap demister, be provided with a blocking solution ring along the desulfurizing tower top inner wall.

Because the utility model has increased desulfurizing tower, adopted the flue gas equalizing distributor, branch flow point tower is taked in the processing of big exhaust gas volumn, the balanced distribution, the technical measures of dividing and rule, some continuous dehydration demisters such as double-deck flase floor that dedusting uses and flap demister simultaneously in separation of flow tower, have been increased, rotating stream tray and centrifuge dehumidifier have been improved, make each single tower at the capacity that guarantees to have strengthened on the excellent treatment effect basis single tower, therefore the utility model quantity of not only having increased desulfurizing tower has also strengthened single tower capacity, total capacity is enough to and various big exhaust gas volumn fire coals, oil burning boiler and large scale industry stove are supporting, and desulfurization dirt removes effect and is up to state standards fully, can be widely used in thermoelectricity, metallurgical, coloured, chemical industry, oil, the industrial waste gas purifying of industries such as mine is handled.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one.

Fig. 2 is the cutaway view of Fig. 1 along A-A.

Fig. 3 is that the B of Fig. 1 is to zoomed-in view.

Fig. 4 is that the C of Fig. 1 is to zoomed-in view.

Fig. 5 is the spray equipment enlarged drawing among Fig. 1.

Fig. 6 is that the D of Fig. 1 is to zoomed-in view.

Fig. 7 is a deflection cone enlarged drawing among Fig. 1.

Fig. 8 is a flap demister enlarged drawing among Fig. 1.

Fig. 9 is the vertical view of Fig. 8.

Figure 10 is a blocking solution ring enlarged drawing among Fig. 1.

Figure 11 is the structural representation of embodiment two.

Figure 12 is a kind of rotating stream tray that adopts among the embodiment two.

Figure 13 is a kind of desulfurization plate that adopts among the embodiment two.

Wherein Fig. 3-Fig. 9 has only drawn the dependency structure of a desulfurizing tower, and the structure of other desulfurizing tower is identical.

The specific embodiment

Embodiment one

Reflected detailed structure of the present utility model referring to Fig. 1 and Fig. 2, as can be seen from the figure, this is the big capacity flue gas desulfurization device of a kind of double tower type of the present utility model, it has only two desulfurizing towers 1, a flue gas equalizing distributor 2 is that the Turbogrid plates 3 of dedusting area, spray water-distributing device 5, the desulfurization that rotating stream tray 4, dedusting area and the desulfurizing and purifying district in desulfurizing and purifying district all have remove centrifuge dehumidifier 6, deflection cone 7, flap demister 8, the blocking solution ring 9 of fog-zone from bottom to up successively in the desulfurizing tower 1.

Referring to Fig. 2: flue gas equalizing distributor 2 is by a gas approach 21 as can be seen, wedge shape division board 22, article two, by-pass flue (23,24) form, wedge shape division board 22 is split into two by-pass flues (23 from the center branch that advances mouth 21 with flue, 24), these two by-pass flues respectively are communicated with a desulfurizing tower 1, outside the desulfurizing tower 1 is expansion chamber, flue gas is divided equally two-way after gas approach 21 enters, respectively by two by-pass flues (23,24) respectively enter and carry out desulfurization in the desulfurizing tower and handle, enter expansion chamber 10 then, discharge by exhanst gas outlet at last, present embodiment can be matched in 135MW thermoelectricity boiler (480t/h, exhaust gas volumn 950000m ³/ h).

Flue gas is from arriving the dedusting area of two desulfurizing towers after the flue gas equalizing distributor enters respectively.Dedusting area has two-layer spray water-distributing device, one deck flase floor 3 is respectively arranged below them.

Referring to Fig. 3: reflected the structure of flase floor 3, it is made up of periphery ring 31 and many grating pipes 32, and the diameter of periphery ring 31 is suitable with desulfurizing tower tower body internal diameter, and grating pipe 32 levels are uniform to be fixed in the periphery ring 31.

Flue gas enters the eddy flow purifying area and carries out desulfurization and further dedusting after elementary dedusting, the eddy flow purifying area has three layers of spray water-distributing device, one deck rotating stream tray is respectively arranged below them.

Referring to Fig. 4: the structure that has reflected rotating stream tray 4, it comprises center blind plate 41, the guide collar 42 of blind plate periphery, center, guide collar 42 is made up of the enclosure 44 of guide plate and fixed guide plate 43, guide collar 42 has two circles at least, be two circles in the present embodiment, the quantity of interior guide collar guide plate is the twice of outer guide collar guide plate, makes guide plate distribution density, gap, inclination angle, the end openings degree of two guide collar identical.

The water-distributing device structure that respectively sprays that is installed in dedusting area and eddy flow purifying area is identical.

Referring to Fig. 5: the structure that has reflected spray water-distributing device 5, it have upper support 51, lower support 52, up and down two support between the epimere of an intrinsic stem stem 53, stem stem 53 be with a water service pipe 54, water service pipe 54 lower ends have train wheel bridge 55, top is communicated with water inlet pipe 56.The hypomere of stem stem 3 is with lower plate 57, and lower plate 57 adopts flange plate structure, and its setting height(from bottom) can be regulated by bolt 58, realizes going up the adjusting in lower plate gap 59 by the setting height(from bottom) of regulating lower plate 57, thereby reaches the purpose that water curtain thickness is regulated.

Flue gas enters the dehydrating demisting district behind dust-removal and desulfurizing, in the dehydrating demisting district, be sequentially with from the bottom to top from

Referring to Fig. 6: the structure that has reflected centrifuge dehumidifier 6, centrifuge dehumidifier as can be seen from the figure of the present utility model still has center blind plate 61 and peripheral dehydration circle 62, but compared with prior art increased a dehydration circle at least, every dehydration circle all is made up of dewatering plate 63 and enclosure 64, and outer ring, dewatering plate quantity is many more, present embodiment has adopted two circle dehydration circles, the dewatering plate quantity of outer dehydration circle is the twice of interior dehydration circle, so that the dewatering plate gap of every dehydration circle is basic identical, guarantee dehydrating effect.It above center blind plate 61 deflection cone 7.

Referring to Fig. 7: reflected the structure of deflection cone 7, starting taper 7 has 71 times conical surfaces 72 of the last conical surface, and support column is adjacent with diametric plane of the big end between two taper seats (71,72) about in the of 73.Wet flue gas is through centrifuge dehumidifier is separated the bulky grain drop from flue gas after, flue gas continues to change and rises, inclined-plane with cone after rising to deflection cone collides continuously, a part of drop sticks to down the conical surface 72 and compiles and flow down in the flue gas, the stream of flue gas continues to rise and will be subjected to the thrust of the conical surface 71, turning up with radial rotation rushes at the tower wall, and remaining drop flows at the bottom of the tower after by the absorption of the liquid film on the tower wall in the flue gas.Deflection cone is except that dehydration, and another important function is to eliminate the eddy current that dewatering centrifuge blind plate center negative pressure forms, thereby significantly reduces the probability that drop is carried secretly by flue gas.

Referring to Fig. 8 and Fig. 9: the structure that has reflected flap demister 8, flap demister 8 is formed by bracing ring 81, enclosure 82 and all multifolded plates 83 of being fixed in the enclosure, flap demister 8 is fixed in the desulfurizing tower by bracing ring 81, flap 83 is converted into the hook-shaped of band V-type intake chute, when each flap of flue gas process, the fine droplet in the cigarette is flowed in the collecting tank and flows at the bottom of the tower.

Referring to Figure 10: reflected the structure of blocking solution ring 9, the tapered ring-type of this blocking solution ring when the liquid film on the tower wall makes progress, is kept off by the blocking solution loop resistance, and is dirty after integrated.

Flue gas enters expansion chamber through flue after desulfurizing tower comes out, become dry gas when arriving the outlet flue of expansion chamber bottom, again by the chimney emptying.

Embodiment two:

Referring to Figure 11: as can be seen, this is the big capacity flue gas desulfurization devices of a kind of two group four towers of the present utility model, and desulfurizing tower 1 has four, and flue gas equalizing distributor 2 has two, and per two desulfurizing towers 1 are joined a flue gas equalizing distributor 2.

Referring to Figure 12: as can be seen, the rotating stream tray 4 of present embodiment is with three circle guide collar outside the blind plate of center, the guide plate of inner ring has the N sheet, second circle has the 2N sheet, and there is 2 * 2N sheet the outer ring, and each guide plate distribution density, gap, inclination angle, end openings degree are basic identical.

Referring to Figure 13: as can be seen, the desulfurizer 6 of present embodiment is with three circle desulfurization circles outside the blind plate of center, and the desulfurization plate of inner ring has the N sheet, and second circle has the 2N sheet, and there is 2 * 2N sheet the outer ring, and each desulfurization plate distribution density, gap, inclination angle, end openings degree are basic identical.

Present embodiment can be matched in 300MW thermoelectricity boiler (1030t/h, exhaust gas volumn 1910000m ³/ h).

Claims

1, a kind of big capacity flue gas desulfurization device, comprise the flue gas access to plant, desulfurizing tower (1), expansion chamber (10), be the dedusting area that two-layer spray water-distributing device (5) is arranged from bottom to up in turn in the desulfurizing tower (1), the desulfurizing and purifying district that three floor spray water-distributing device (5) and rotating stream tray (4) are arranged, the dehydrating demisting district that centrifuge dehumidifier (6) is arranged, it is characterized in that described desulfurizing tower (1) has two at least, per two desulfurizing towers (1) configuration flue gas equalizing distributor (2), each flue gas equalizing distributor (2) is isolated into two Contiuum type by-pass flues (23 by a gas approach (21), 24) form, every by-pass flue is communicated to a desulfurizing tower (1); Under the two-layer spray water-distributing device (5) of described dedusting area one deck flase floor (3) is arranged respectively, flase floor (3) is made up of periphery ring (31) and many grating pipes (32), the diameter of periphery ring (32) is suitable with desulfurizing tower (1) tower body internal diameter, and grating pipe (32) level is uniform to be fixed in the periphery ring (31); The rotating stream tray (4) in described desulfurizing and purifying district heart blind plate (41) periphery therein has two circle guide collar (42) at least; Described spray water-distributing device (5) has last lower support (51,52) and is contained in stem stem (53) between lower support, stem stem (53) epimere is with the water service pipe (54) of band train wheel bridge (55), hypomere is equipped with the adjustable lower plate of setting height(from bottom) (57), water service pipe (54) communicates with water inlet pipe (56), and train wheel bridge (55) is positioned at water service pipe (54) lower end, between it and the lower plate (57) an adjustable gap (59) is arranged, absorption liquid is flowed out from described gap to water service pipe (54) by water inlet pipe (56); In the described dehydrating demisting district, centrifuge dehumidifier (6) the peripheral dehydration circle (62) of heart blind plate (61) therein has two circles at least, a band two taper seats (71 are up and down arranged in the center of centrifuge dehumidifier blind plate (61) top, 72) deflection cone (7), described adjacent between two taper seats up and down with diametric plane of the big end, there is flap demister (8) top of deflection cone (7), this flap demister is made up of enclosure (82) and all multifolded plates (83) of being fixed in the enclosure, described flap is converted into and has the hook-shaped of V-type collecting tank, above the flap demister, be provided with a blocking solution ring (9) along the desulfurizing tower top inner wall.

2,, it is characterized in that guide plate distribution density in every guide collar of rotating stream tray (4), gap, inclination angle, end openings degree are identical according to the described big capacity flue gas desulfurization device of claim 1; Distribution density, the inclination angle of every dehydration circle dewatering plate of described centrifuge dehumidifier (6) are identical.