CN2699141Y

CN2699141Y - Dust/sulfur removing device of coal burning boiler flue duct

Info

Publication number: CN2699141Y
Application number: CN 200420031778
Authority: CN
Inventors: 修志清; 修志尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-28
Filing date: 2004-05-28
Publication date: 2005-05-11
Anticipated expiration: 2014-05-28

Abstract

A dust removing and sulfur removing device of a coal burning boiler flue duct of the utility model is an improvement for the dust removing device arranged in a coal burning boiler flue duct. The dust removing and sulfur removing device of a coal burning boiler flue duct solves the insufficiency that the dust removing effect of the dust removing device is bad, and even is not qualified sometimes. The dust removing and sulfur removing device of a coal burning boiler flue duct is composed of a container, a smoke inlet pipe, a smoke outlet pipe, a feed pipe, an overflow pipe, a partition board, a circulating water pipe, a water pump, a draught fan and a supplementing water ball valve. The dust removing and sulfur removing device of a coal burning boiler flue duct has the advantages that alkaline water is arranged in the container, and the dust in the flue gas is filtered by the alkaline water, deposited at the bottom of the container and discharged, which makes the dust be depressed to completely satisfy the request of the environmental protection index. The sulfur dioxide in the flue gas is neutralized with the alkaline water which is sprayed in the smoke inlet pipe and flows in the foam, which makes the sulfur dioxide in the flue gas be depressed to completely satisfy the request of the environmental protection index. The dust removing and sulfur removing device of a coal burning boiler flue duct is an ideal device used for removing dust and sulfur in the coal burning boiler flue duct.

Description

Coal-burning boiler flue dust/sulfur removing device

Technical field: the invention is the improvement to the employed dedusting of coal-burning boiler flue, desulfurizing device.

Background technology: at present, the dust arrester of in the coal-burning boiler flue, installing, there are iris type, cloth-bag type, Cottrell process etc. to reach the purpose of dedusting, sulphur removal method commonly used is that sulphur-fixing agent is mixed in fire coal, reduces the discharge capacity of sulfur dioxide in combustion process, dust arrester that it is above-mentioned and process for sulfur removal, effect is undesirable, also remain with flue dust in the flue gas, greyish black flue gas phenomenon often occurs, the mark phenomenon has often appearred in sulfur dioxide in flue gas.

Summary of the invention: the purpose of the invention provides the dust in removing smoke in a kind of smokejack that is installed in coal-burning boiler and removes the coal-burning boiler flue dust/sulfur removing device that sulfur dioxide reaches environmental requirement.The purpose of the invention is achieved through the following technical solutions: coal-burning boiler flue dust/sulfur removing device: comprise casing, smoke-intake pipe, pipe, it is characterized in that dividing plate is vertically installed in the center in casing, constitute smoke input chamber and smoke output chamber, in smoke input chamber zone, casing upper end, be installed into smoke pipe, smoke-intake pipe links to each other with air-introduced machine, in smoke output chamber zone, casing upper end, pipe is installed, in the casing upper end charge pipe is installed, on the sidewall of middle part overflow pipe and floating ball valve of rehydration are being installed on the casing, on casing smoke output chamber sidewall, circulating water pipeline is installed, water pump is installed in circulating water pipeline, the circulating water pipeline other end links to each other with smoke-intake pipe, on the sidewall of smoke-intake pipe, make spray apertures, blow-off pipe is installed, in casing, adorn alkaline water at bottom half.

The course of work of this device: the flue gas that coal-burning boiler produces is forced flue gas to draw in the smoke input chamber that blows in the casing through air-introduced machine, the flue gas that has pressure blows and is sprayed on the alkaline water surface, because the alkaline water surface is subjected to compulsory flue gas and blows spray, the surface produces foam, spread in the area of space above the alkaline water, this moment, the blast pipe termination was embedded in the foam, the dust of carrying secretly in the flue gas is deposited in bottom half through alkaline water, discharge by blow-off pipe, the passage that flue gas leaves on casing internal partition top flows to smoke output chamber, discharging through pipe, in flowing to the pipe process, be actually in alkaline foam and flow, sulfur in smoke and alkaline matter neutralization in flow process, adding alkaline water guides in the smoke-intake pipe through water pump in circulating water pipeline, the shunting of spray apertures on the smoke-intake pipe tube wall produces the spray effect, is sprayed on uniformly in the flue gas, makes another neutralization of sulfur in smoke, sulfur in smoke neutralizes through secondary like this, reaches the purpose of sulphur removal fully.

The advantage of the invention: because dividing plate is installed in casing, constitute smoke input chamber and smoke output chamber, and in two chambeies, alkaline water is housed, smoke-intake pipe is installed in the smoke input chamber zone, dust in flue gas is deposited to bottom half through alkaline water, good dedusting effect the secondary dust can not occur through water filtration and wave, so can reach environmental requirement fully; Sulfur in smoke is through twice neutralization, once be in smoke-intake pipe, in spray alkaline water process, to neutralize, the secondary neutralization is to be sprayed by smoke-intake pipe at flue gas, flue gas flows in the alkaline water foam that fills the air, secondary neutralization in flow process, twice neutralization is reduced to the index of environmental requirement with sulfur in smoke, and therefore the flue gas of discharging is free from environmental pollution.

Description of drawings:

Fig. 1 is a coal-burning boiler flue dust/sulfur removing device structural representation.

The specific embodiment: coal-burning boiler flue dust/sulfur removing device, by casing 1, dividing plate 2, smoke-intake pipe 5, pipe 8, air-introduced machine 6, overflow pipe 3, charge pipe 4, circulating water pipeline 9, water pump 10, floating ball valve of rehydration 14, blow-off pipe 12, alkaline water 15, smoke input chamber 13, smoke output chamber 11 constitutes, dividing plate 2 is installed in the casing 1, dividing plate 2 vertically is contained in casing 1 middle part, on, lower end and casing 1 wall leave the space, dividing plate 2 constitutes smoke input chamber 13 and smoke output chamber 11 with casing 1 inner chamber, advancing, smoke output chamber 13, dress alkaline water 15 in 11, the pH value of alkaline water 15 is 7-9, charge pipe is installed in casing 1 upper end, be convenient in casing 1, add alkaline material, be installed into smoke pipe 5 on smoke input chamber 13 regional tops, flue gas is entered in the alkaline water 15 in the smoke input chamber 13 by smoke-intake pipe 5, dust in flue gas is through the bottom of alkaline water 15 filtering-depositings to casing 1, overflow pipe 3 is installed in casing 1 middle and upper part, when alkaline water 15 is measured for a long time, flow out from overflow pipe 3, the water surface elevation that maintenance needs, pipe 8 is installed on top at smoke output chamber 11, floating ball valve of rehydration 14 is installed on the sidewall of the casing 1 of smoke output chamber 11, when descending, replenishes automatically the alkaline water surface, the height that maintenance needs, circulating water pipeline 9 is installed in casing 1 sidewall middle and upper part at smoke output chamber 11, and water pump 10 is installed on circulating water pipeline 9.The other end of circulating water pipeline 9 links to each other with smoke-intake pipe 5, and on the tube wall of smoke-intake pipe 5, make spray apertures 7, spray apertures 7 sprays the alkaline water of circulation in flue gas uniformly, sulfur in smoke can be neutralized uniformly, in casing 1 bottom blow-off pipe 12 is installed, the dust of precipitation is discharged easily.

Casing 1 can adopt material manufacturings such as carbon steel, stainless steel, fiberglass.

Claims

1, coal-burning boiler flue dust/sulfur removing device: comprise casing, smoke-intake pipe, pipe, it is characterized in that dividing plate is vertically installed in the center in casing, constitute smoke input chamber and smoke output chamber, in smoke input chamber zone, casing upper end, be installed into smoke pipe, smoke-intake pipe links to each other with air-introduced machine, in smoke output chamber zone, casing upper end, pipe is installed, in the casing upper end charge pipe is installed, on the sidewall of middle part overflow pipe and floating ball valve of rehydration are being installed on the casing, on casing smoke output chamber sidewall, circulating water pipeline is installed, water pump is installed in circulating water pipeline, the circulating water pipeline other end links to each other with smoke-intake pipe, on the sidewall of smoke-intake pipe, make spray apertures, blow-off pipe is installed, in casing, adorn alkaline water at bottom half.

2, coal-burning boiler flue dust/sulfur removing device according to claim 1, the pH value that it is characterized in that alkaline water is 7-9.