CN1033493C

CN1033493C - Fume desulfurization dust catching apparatus

Info

Publication number: CN1033493C
Application number: CN 94102556
Authority: CN
Inventors: 秦效敏
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-21
Filing date: 1994-03-21
Publication date: 1996-12-11
Anticipated expiration: 2014-03-21
Also published as: CN1091677A

Abstract

The present invention relates to a desulfurization dust-removing device for smoke gases. A desulfurization duster for smoke gases is in an integral structure; a desulfurization dust-removing chamber positioned in the smoke dust desulfurization duster comprises a spiral plate of which the cross section is an Archimedes spiral; a dehydrator for smoke gases is composed of a plurality of corrugated pipes of different diameters, and the corrugated pipes are installed on a coaxial line; and a medicament preparation box with stable water quality is installed in a water pipeline for supplying the desulfurization duster. The desulfurization dust-removing device has the advantages of high desulfurization dust-removing efficiency, compact structure, easy manufacture, low cost, no deposition and no clogging of water quality and continuous operation for a long term. The desulfurization dust-removing device is suitable for the desulfurization and dust removing of various smoke gases, and the desulfurization dust-removing device can be widely applied to other relevant fields.

Description

A kind of desulfurating dust removing device for flue gas

Of the present invention is a kind of purifier, refers more particularly to a kind of purifier that is used for flue gas desulfurization and dedusting.

Because developing rapidly with the size of population of industry constantly increases, the sharp increase year by year of the consumption of various fuel, the flue dust that its fuel combustion generates also is on the rise to the atmosphere produced pollution.Coal is still one of industrial and civilian main fuel now, and therefore annual have a large amount of SO2 to be drained in the atmosphere with the flue gas that coal burning generated, and forms acid rain, thereby the mankind are caused serious harm.Therefore, air pollution has become one of main public hazards of the people of other countries now.

At the existing desulfation dust-extraction device that is used for coal-burning boiler, stove etc., its dust removing effects of general nonaqueous dust cleaner is relatively poor, and can't desulfurization; Though existing hydrofilter is better than nonaqueous dust cleaner, its desulfurized effect is not ideal enough, and exist big as volume, floor space is big, water consumption is big, have secondary pollution, the easy defective that can't overcome such as corrode of equipment.Though have some desulfurization and dedusting effects smoke and dust purifier preferably now in the world, its complex structure, cost costliness.

The objective of the invention is to overcome the existing shortcoming of existing desulfurating dust removing device for flue gas, and provide a kind of desulfurization dust-removing efficiency height, simple in structure, volume is little, be easy to make, lower-cost desulfurating dust removing device for flue gas.

Desulfurating dust removing device for flue gas of the present invention includes, smoke desulfurization dust remover, circulating pump, high rate filter, whirling reaction chamber, lime white case, water sprayer, air-introduced machine is characterized in that smoke desulfurization dust remover is an overall structure, it includes desulfurization dust chamber, the fume-dehydrating device, just heavy chamber, smart heavy chamber, the collection mortar bucket, distributing water room.

Desulfurating dust removing device for flue gas of the present invention, owing to adopted novel desulfurization and dedusting principle and structure, its desulfurization dust-removing efficiency is higher, and the compact conformation volume is little, and it is lower to be easy to manufacturing cost.Simultaneously, because this has water stabilization and anticorrosion facility in putting, its non-scaling does not stop up, and is easy to long-time running, and operating cost is lower, and water consumption is little, non-secondary pollution.

Fig. 1 is the structural representation of desulfurating dust removing device for flue gas of the present invention;

Fig. 2 is the operational flow diagram of desulfurating dust removing device for flue gas of the present invention;

Fig. 3 is the profilograph of the smoke desulfurization dust remover of desulfurating dust removing device for flue gas of the present invention;

Fig. 4 is the longitudinal section of the desulfurization dust chamber of desulfurating dust removing device for flue gas of the present invention;

Fig. 5 is the cutaway view in desulfurization dust chamber of the present invention A-A cross section shown in Figure 4;

Fig. 6 is the profilograph of the fume-dehydrating device of desulfurating dust removing device for flue gas of the present invention;

Fig. 7 is the drawing in side sectional elevation of the fume-dehydrating device of desulfurating dust removing device for flue gas of the present invention.

Now in conjunction with the accompanying drawings, and pass through following examples, desulfurating dust removing device for flue gas of the present invention is described in detail.

Fig. 1 is the structural representation of desulfurating dust removing device for flue gas of the present invention, and Fig. 2 is the operational flow diagram of desulfurating dust removing device for flue gas of the present invention.This device includes, smoke desulfurization dust remover 1, circulating pump 2, high rate filter 3, whirling reaction chamber 4, lime white case 5, water sprayer 6, air-introduced machine 7 is characterized in that smoke desulfurization dust remover 1 is an overall structure, it includes desulfurization dust chamber 8, fume-dehydrating device 9, just heavy chamber 10, smart heavy chamber 11, collection mortar bucket 12, distributing water room 13.

Smoke desulfurization dust remover 1 of the present invention includes desulfurization dust-removal system and water treatment system.Wherein, the exhanst gas outlet of desulfurization dust chamber 8 is connected with the gas approach of fume-dehydrating device 9, and the exhanst gas outlet of fume-dehydrating device 9 is connected with air-introduced machine 7 outside being positioned at smoke desulfurization dust remover 1, and the exhaust outlet of air-introduced machine is connected with chimney 15; The buck outlet that is positioned at desulfurization dust chamber 8 bottoms successively with just heavy chamber 10, smart heavy chamber 11 is connected in series connection mutually, wherein, the mortar outlet of just heavy chamber 10 and smart heavy chamber 11 is connected with collection mortar bucket 12 respectively, and 12 its outlets of collection mortar bucket are connected by pipeline and mortar outside being positioned at smoke desulfurization dust remover 1 pond 28 of dewatering; The discharge outlet of smart heavy chamber 11 successively with distributing water room 13, the high rate filter 3 that is positioned at outside smoke desulfurization dust remover 1 is connected in series connection mutually, between distributing water room 13 and high rate filter 3, circulating pump 2 is installed, the port of export of high rate filter 3 is connected with desulfurization dust chamber 8 and whirling reaction chamber 4 respectively, wherein between high rate filter 3 and desulfurization dust chamber 8, be parallel with a water sprayer 6, water sprayer 6 is connected with water stabilization Scatula 14, be added with water quality stabilizer in the water stabilization Scatula 14, the pH value that enters the water in the desulfurization dust chamber 8 is 8-9, and the feed pipe road junction of desulfurization dust chamber 8 is equipped with a flowmeter 29; Between high rate filter 3 and whirling reaction chamber 4, be connected with lime white case 5 parallel with one another and water sprayer 6, wherein, the port of export of lime white case 5 is connected with water sprayer 6; The port of export of whirling reaction chamber 4 is connected with distributing water room 13, and the pH value that enters into the water of distributing water room 13 is 12-14.

Fig. 3 is the profilograph of the smoke desulfurization dust remover of desulfurating dust removing device for flue gas of the present invention.This smoke desulfurization dust remover 1, its housing 16 is a cylindrical shape, desulfurization dust chamber 8 is positioned at the middle part of housing 16, fume-dehydrating device 9 is positioned at the top of housing 16, between desulfurization dust chamber 8 and fume-dehydrating device 9, shower 17 is installed, shower 17 is connected with the outlet pipe of whirling reaction chamber 4, be distributed with a plurality of spray orifices on the shower 17, just heavy chamber 10 is positioned at the bottom of housing 16, lower end and first sinking in desulfurization dust chamber 8 have a conical hopper 18 between 10 upper ends, chamber, on the circumference of the upper surface of funnel 18, ring-type effluent weir 19 is installed, the lower end of desulfurization dust chamber 8 is connected with effluent weir 19, just heavy 10 upper ends, chamber are connected with the lower end of funnel 18, the inwall of housing 16 bottoms and funnel 18, space between the outer wall of just heavy chamber 10 is smart heavy chamber 11, collection mortar bucket 12 is positioned at the bottom of housing 16, its top is connected with smart heavy chambers 11 10, just heavy chamber respectively, collection mortar bucket 12 its underparts have the mortar outlet, distributing water room 13 is a ring bodies, with housing 16 install coaxially its bottom exterior circumferential, in the exterior circumferential of the effluent weir 19 that is positioned at housing 16 middle parts, one ring-type header tank 20 is installed, and it is connected with distribution reservoir 13 by pipeline 21; One exhaust opening is arranged at the top of housing 16, and it is connected with air-introduced machine 7.

Fig. 4 and Fig. 5 are respectively the longitudinal section of desulfurization dust chamber of desulfurating dust removing device for flue gas of the present invention and the cutaway view in this desulfurization dust chamber A-A cross section.This desulfurization dust chamber 8 includes the spiral plate 22 that its cross section is a spiral of Archimedes, the upper end seal weld of spiral plate 22 is connected to end casing 23, under the end casing 23 between the spiral plate 22 of one section distance, be welded with the porous barrier 24 that parallels with end casing 23, its weld seam is discontinuous intermittent weld, can be respectively 10 millimeters as every section weld seam length and interval thereof, in the weld seam discontinuities, have gap 26 as 4 mm wides between spiral plate 22 and the porous barrier 24, in the space that between by end casing 23 and dividing plate 24, is constituted, spray header 25 is installed, be distributed with a plurality of hole for water sprayings on it and be connected with outside feed pipe, side being positioned at the spiral plate 22 under the dividing plate 24 has gas approach, and the lower end of spiral plate 22 is an exhanst gas outlet.The size of desulfurization dust chamber 8 is determined as required, be can be the 130-140 millimeter as the distance between the spiral plate 22 at its air inlet place.Between spiral plate 22 and the dividing plate 24 for being interrupted welding, above-mentioned both not weld have gap 26, dividing plate 24 is evenly equipped with a plurality of through holes, spray header 25 is positioned at dividing plate 24 tops and is distributed with a plurality of hole for water sprayings.

Fig. 6 and Fig. 7 are respectively the profilograph and the drawing in side sectional elevation of the fume-dehydrating device of desulfurating dust removing device for flue gas of the present invention.This fume-dehydrating device 9 is not waited by a plurality of diameters, and the bellows 27 that coaxial line is installed constitutes, and each bellows 27 cross section is an annular, and its vertical section is a waveform.The physical dimension of bellows can determine as required, can be the 400-600 millimeter as the axial length of bellows, and the wall spacing of each bellows 27 can be the 40-60 millimeter, and the fillet R of ripple can be the 100-130 millimeter.

Desulfurating dust removing device for flue gas of the present invention, because according to mass transfer theory and mass transfer dynamics, its desulfurization dust chamber 8 and fume-dehydrating device 9 have adopted novel structure, thereby have strengthened the less turbulence of gas-liquid two-phase, improve mass transfer area and mass tranfer coefficient widely, strengthened mass transfer force.In reative cell, existing moisture film absorbs, and spray absorbs, also have pulse to absorb, ash-laden gas is strong turbulent condition in reative cell, and the SO2 in the flue gas is absorbed by alkaline solution, grit is attracted on the trickle globule, and coalescence becomes bulky grain to be separated, thereby reaches the purpose of desulfurization and dedusting.This device is owing to integrating smoke elimination, dedusting, desulfurization and water treatment, and is therefore simple in structure, compactness.Simultaneously, because it has complete water treatment facilities and anti-corrosion measure reliably, this device can long-term continous-stable operation and non-scaling does not stop up.This device has environment, society and economic effect preferably, can be widely used in industry and civilian association area.

Claims

1, a kind of desulfurating dust removing device for flue gas, include smoke desulfurization dust remover (1), circulating pump (2), high rate filter (3), whirling reaction chamber (4), lime white case (5), water sprayer (6), air-introduced machine (7), smoke desulfurization dust remover (1) is an overall structure, it includes desulfurization dust chamber (8), fume-dehydrating device (9), just heavy chamber (10), smart heavy chamber (11), collection mortar bucket (12), distributing water room (13), the inlet of high rate filter (3) is connected with the discharge outlet of desulfurizing dust-collector (1), on the pipeline between the discharge outlet of the inlet of high rate filter (3) and desulfurizing dust-collector (1), circulating pump (2) is installed, high rate filter (3) outlet is connected with smoke desulfurization dust remover (1) and whirling reaction chamber (4) respectively by pipeline, on its pipeline between separately, be separately installed with water sprayer (6), the entrance and exit of lime white case (5) is connected with high rate filter (3) and whirling reaction chamber (4) respectively, air-introduced machine (7) is installed on the smoke discharging pipe of smoke desulfurization dust remover (1), the housing (16) that it is characterized in that smoke desulfurization dust remover (1) is cylindrical shape, desulfurization dust chamber (8) is positioned at the middle part of housing (16), fume-dehydrating device (9) is positioned at the top of housing (16), between desulfurization dust chamber (8) and fume-dehydrating device (9), shower (17) is installed, shower is distributed with a plurality of spray orifices on (17), just heavy chamber (10) is positioned at the bottom of housing (16), between the upper end of the lower end of desulfurization dust chamber (8) and just heavy chamber (10), a conical hopper (18) is arranged, ring-type effluent weir (19) is installed on the circumference of the upper surface of funnel (18), the lower end of desulfurization dust chamber (8) is connected with effluent weir (19), the upper end of just heavy chamber (10) is connected with the lower end of funnel (18), the inwall of housing (16) bottom and funnel (18), space between the outer wall of just heavy chamber (10) is smart heavy chamber (11), collection mortar bucket (12) is positioned at the bottom of housing (16), its top is connected with just heavy chamber (10) and smart heavy chamber (11) respectively, distributing water room (13) is a ring bodies, with housing (16) be co-axially mounted on its bottom exterior circumferential.

2, desulfurating dust removing device for flue gas according to claim 1, it is characterized in that desulfurization dust chamber (8) includes the spiral plate that its cross section is a spiral of Archimedes (22), the upper end seal weld of spiral plate (22) is connected to end casing (23), under the end casing (23) between the spiral plate (22) of one section distance, be welded with the porous barrier (24) that parallels with end casing (23), its weld seam is discontinuous intermittent weld, in the weld seam discontinuities, has gap (26) between spiral plate (22) and the porous barrier (24), in the space that between end casing (23) and dividing plate (24), is constituted, spray header (25) is installed, is distributed with a plurality of hole for water sprayings on it and is connected with outside feed pipe.

3, according to claim 1 or 2 described desulfurating dust removing device for flue gas, it is characterized in that the bellows (27) that fume-dehydrating device (9) is not waited by a plurality of diameters, that coaxial line is installed constitutes, the cross section of each bellows (27) is an annular, its vertical section is a waveform.

4, according to the described desulfurating dust removing device for flue gas of claim 3, the port of export that it is characterized in that high rate filter (3) is connected with desulfurization dust chamber (8), at the above-mentioned water sprayer (6) that is parallel with between the two, water sprayer (6) is connected with water stabilization Scatula (14), this Scatula is added with water quality stabilizer in (14), the pH value that enters into the water of desulfurization dust chamber (8) is 8-9, the port of export of whirling reaction chamber (4) is connected with distributing water room (13), and the pH value that enters into the water of distributing water room (13) is 12-14.

5, according to the described desulfurating dust removing device for flue gas of claim 3, it is characterized in that being between spiral plate (22) and the porous barrier (24) intermittent weld, every section is stitched length and is respectively 10 millimeters at interval, gap (26) between spiral plate of weld seam discontinuities (22) and the porous barrier (24) is 4 mm wides, the spacing of the spiral plate (22) of the import department of desulfurization dust chamber (8) is the 130-140 millimeter, the wall spacing of each bellows (27) of fume-dehydrating chamber (9) is the 40-60 millimeter, its axial length is the 400-600 millimeter, and the ripple fillet R of bellows is the 100-130 millimeter.