CN201507143U

CN201507143U - Chimney with functions of corrosion-prevention, dust-collection and energy conservation

Info

Publication number: CN201507143U
Application number: CN2009200660792U
Authority: CN
Inventors: 郑德明; 盛惕闻
Original assignee: Individual
Current assignee: Chang Xiyu; HUNAN TIANTONG NON-CORROSIVENESS CHIMNEY CO LTD; Xu Shusheng; Zheng Deming
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-06-16
Anticipated expiration: 2019-09-28

Abstract

The utility model discloses an efficient chimney with the functions of corrosion-prevention, dust-collection and energy conservation, which comprises a chimney cylinder body (3), and is characterized in that a smoke inlet flue adopts an arc-shaped smoke flue (1) which is positioned on the outer side of the lower end of the chimney cylinder body (3); an outlet (2) of the arc-shaped smoke flue (1) is in smooth connection with the inner wall of the chimney cylinder body (3); and the arc rotating direction of the arc-shaped smoke flue (1) is equidirectional with that of the inner wall of the adjacent chimney cylinder body. Compared with the prior chimney, the utility model has the advantages of stable structure, good environment-friendly effect, prolonged service life and relatively low manufacturing cost, can improve the environment-friendly effect by 25% to 45%, can reduce the self-resistance by 20%, and therefore can reduce the power consumption of an induced draft fan by about 8.5%; and as flue gas whirls in the cylinder, and 30% to 80% of dust can be collected. The chimney of the utility model is used for wet dust collection and wet desulphurization, and the inner wall of the chimney can remain intact without corrosion, therefore, the utility model is applicable to various chimneys.

Description

Anticorrosive dust-collecting energy-saving chimney

Technical field

The utility model relates to chimney, further be meant have anticorrosion, gather dust, the chimney of power saving function.

Technical background

Existing chimney, its flue are form of straight lines and insert chimney by the tube core line of chimney.The stack friction of this structure greatly, do not gather dust, a flue gas rises along tube thorax inwall in the tube, the corrosion liner of delaying causes liner to rot to peel off, cylindrical shell breaks.In recent years, be the protection environment, the flue gas that contains nuisance sulfur dioxide that industries such as smelting, generating, chemical industry are produced promptly carries out wet desulphurization before it enters chimney, thereby the cigarette temperature is dropped to below the dew point; But consequent acid solution is dirty along inner wall of stack, very easily makes liner rot to cause the cylindrical shell cracking.For addressing this problem, general method is to overlap in the installing in chimney.But so interior cover involves great expense.210 meters chimneys of 600,000 kilowatts of thermal power plants for example, interior cover investment needs 1,000 ten thousand yuan unexpectedly, and the also only measure of being convenient to change of this method, is to control the way that table does not effect a permanent cure.

The utility model content

The technical problems to be solved in the utility model is, at existing technical deficiency, proposes a kind of anticorrosive dust-collecting energy-saving chimney, and its cost is cheap relatively, have anticorrosion, gather dust, energy-conservation function.

Technical solution of the present utility model is, described anticorrosive dust-collecting energy-saving chimney comprises chimney barrel, this chimney barrel design feature is, flue is the arc flue that is positioned at the outside, chimney barrel lower end, the outlet of this arc flue and the smooth connection of described chimney barrel inwall, the chimney barrel inwall hook direction of the hook direction of described arc flue and adjacency is in the same way.

Below the utility model made further specify.

Referring to Fig. 1, described anticorrosive dust-collecting energy-saving chimney comprises chimney barrel 3, these chimney barrel 3 design features are, flue is the arc flue 1 that is positioned at the outside, chimney barrel 3 lower ends, the outlet 2 of this arc flue 1 and described chimney barrel 3 inwall smooth connections (referring to Fig. 2), the chimney barrel inwall hook direction of the hook direction of described arc flue 1 and adjacency is in the same way.

The operating principle of anticorrosive dust-collecting energy-saving chimney described in the utility model is, the chimney of said structure is broken through traditional design, will advance the cigarette flue and make arc flue 1, and it can make flue gas circle round in chimney barrel and form outward turning stream 4 and interior swirling flow 5 (referring to Fig. 3); Flue gas enters chimney barrel from arc flue 4, can produce good rotation in advance in arc flue 4 before entering chimney barrel, helps to improve efficiency of dust collection, makes that pitot loss is little, dust content greatly reduces, and plume rigidity is big; After flue gas enters chimney, can continue to keep spiral and rise.Because flue gas stream spiral rising centrifugal action, a small amount of dust granules that remains in the flue gas stream mainly is distributed in the flue center.Flue gas generation condensation is relevant with contained grit, at first is to rely on grit to form nucleus of condensation, enlarges gradually then and forms overall condensation.Because grit focuses mostly at the flue center, so condensation mostly occurs at flue axis one band, and closely the wall plume still can be kept the unsaturation state, and the wall drying is not corroded by condensed fluid.

Profitable fruit of the present utility model is: it is a kind of efficient corrosion resisting dust-collecting energy-saving chimney, its structural stability height, and environment protecting is good; The utility model chimney and co-altitude, compare with the conventional chimney of discharge value, environment protecting improves 25～45%, and self resistance is low by 20%, thereby can reduce air-introduced machine power consumption about 8.5%; Flue gas circles round in tube, is equivalent to cyclone dust collectors, can gather dust 30%～80%; Make that also chimney lining does not corrode, prolong application life greatly, and cost is cheap relatively.

Description of drawings

Fig. 1 is the structural representation (broken section) of a kind of embodiment of the utility model efficient corrosion resisting dust-collecting energy-saving chimney;

Fig. 2 be among Fig. 1 A-A to sectional structure;

Fig. 3 is the flue gas eddy flow situation schematic diagram of chimney shown in Figure 1.

In the drawings:

The 1-arc flue, the 2-outlet, the 3-chimney barrel,

The outer eddy flow of 4-, swirling flow in the 5-.

The specific embodiment

According to the utility model anticorrosive dust-collecting energy-saving chimney of Fig. 1 to Fig. 3 and said structure, its chimney barrel 3; Referring to Fig. 1 and Fig. 2, flue is the arc flue 1 that is positioned at the outside, chimney barrel 3 lower ends, the outlet 2 of this arc flue 1 and described chimney barrel 3 inwall smooth connections (referring to Fig. 2), the chimney barrel inwall hook direction of the hook direction of described arc flue 1 and adjacency is in the same way.

Chimney barrel 3 usefulness liner tile are built formation by laying bricks or stones, and chimney barrel 3 base diameters are 9 meters of ￠, and are high 100 meters.This chimney barrel 3 has 5 sections sloping ratios of difference from the bottom to top, and they are followed successively by: i is compared on first section slope ₁I is compared on=0.06～0.08, second section slope ₂I is compared on=0.04～0.06, the 3rd section slope ₃I is compared on=0.02～0.04, the 4th section slope ₄I is compared on=0.01～0.02, the 5th section slope ₅=0.00; Wherein every section shared height percentage of being followed successively by the chimney height overall is: i is compared on described slope ₁Account for the chimney height overall 20～30%, the slope compares i ₂Account for the chimney height overall 25～30%, the slope compares i ₃Account for the chimney height overall 20～25%, the slope compares i ₄Account for the chimney height overall 20～25%, the slope compares i ₅Account for 15～20% of chimney height overall.

The chimney of the utility model said structure, dust collection effect is good, per hour gathers dust to reach 30 tons; Its obvious energy conservation can make air-introduced machine power consumption reduce by 20%, and be applicable to various chimneys.The chimney long-term experiment of the utility model structure shows, uses wet dedusting and wet desulphurization, and inwall is excellent, fully the sorrow that is not corroded.

Claims

1. anticorrosive dust-collecting energy-saving chimney, comprise chimney barrel (3), it is characterized in that, flue is for being positioned at the arc flue (1) outside chimney barrel (3) lower end, the outlet (2) of this arc flue (1) and described chimney barrel (3) inwall smooth connection, the chimney barrel inwall hook direction of the hook direction of described arc flue (1) and adjacency is in the same way.

2. anticorrosive dust-collecting energy-saving chimney according to claim 1 is characterized in that, chimney barrel (3) has five sections sloping ratios of difference from the bottom to top, and they are followed successively by: i is compared on first section slope ₁I is compared on=0.06～0.08, second section slope ₂I is compared on=0.04～0.06, the 3rd section slope ₃I is compared on=0.02～0.04, the 4th section slope ₄I is compared on=0.01～0.02, the 5th section slope ₅=0.00; Wherein every section shared height percentage of being followed successively by the chimney height overall is: i is compared on described slope ₁Account for the chimney height overall 20～30%, the slope compares i ₂Account for the chimney height overall 25～30%, the slope compares i ₃Account for the chimney height overall 20～25%, the slope compares i ₄Account for the chimney height overall 20～25%, the slope compares i ₅Account for 15～20% of chimney height overall.