CN2145921Y

CN2145921Y - High efficient chemical absorption fume purifier

Info

Publication number: CN2145921Y
Application number: CN 93200891
Authority: CN
Inventors: 崔世双
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-28
Filing date: 1993-01-28
Publication date: 1993-11-10
Anticipated expiration: 2003-01-28

Abstract

The utility model provides a chemical absorption fume purifier with high efficiency, which relates to the dust removal and the purification of the exhaust gas and the fume of various boilers in environment protection. One side of a fume inlet of a centrifugal cyclone is provided with an air inlet tube, and a catalyst unit is hung at the entry of the fume inlet. The center of the centrifugal cyclone is provided with a venturi tube which is composed of a gradually contracting tube, a throat tube and a gradually enlarging tube. A plurality of drawer type solid adsorption medium layers or a reverse barrel type solid adsorption medium layer is arranged in a filter chamber, and solid adsorption media in the cylindrical filter chamber are brown coal or the mixture of brown coal and calcium carbonate granules positioned on a stainless steel wire net.

Description

High efficient chemical absorption fume purifier

The efficient fume purifier of chemisorbed described in the utility model relates to the dedusting and the purification of various boiler waste gas flue dust in the environmental protection, belongs to the cleaning equipment in the environmental protection.

Traditional dust separation device, for big or middle particle better dust removal effect, can be powerless for particulate and colloid dust, though adopt electrostatic precipitation to solve, but electrostatic precipitator power consumption is big, equipment investment is big, inapplicable for medium and small boiler, also useful wet cleaning, but also answer equipment investment big, floor space is big, and water consumption can't be promoted in some medium small boiler udst separations greatly, and Packed wet cleaner also should use solid absorbent expense height can't be extensive use of with needing reclaim equiment.Chinese patent 91207291.1 discloses a kind of " high efficiency dust remover by magnetization adsorption ", and it has certain filtration, purification ability to particle dust, but pernicious gas is not had the adsorption cleaning ability.

The goal of the invention of the efficient fume purifier of chemisorbed described in the utility model is that design is a kind of can dedusting, can purify flue dust again, remove pernicious gas, and equipment investment is little, does not need the efficient fume purifier of a large amount of waters.

The efficient fume purifier of chemisorbed described in the utility model is to be fused up and down by centrifugal cyclone 18 that has smoke air inlet and lower cone dust arrester 9, at the center of centrifugal cyclone 18 are Venturi tubes 8, it communicates centrifugal cyclone 18 and garden cylindricality filter chamber 6, several layers drawer type solid absorption dielectric layer 4 or a rewinding formula solid absorption dielectric layer are arranged in the filter chamber 6, the top of every layer of solid absorption dielectric layer is equipped with magnetized drinking water spray wetting system 2, side at centrifugal cyclone 18 and smoke air inlet 16 has an air intake duct 23, the porch of air inlet hangs a catalyst-assembly 17, it makes nitric oxide and sulfur dioxide in the flue dust at high temperature be oxidized to nitrogen dioxide and sulfur trioxide, the nitrogen dioxide of oxidation and sulfur trioxide are passing through reducing pipe, the Venturi scrubbing pipe 8 that trunnion and increaser constitute and enter garden cylindricality filter chamber 6, and the solid absorption medium 4 in the garden cylindricality filter chamber 6 is the brown coal of placement on stainless steel cloth 3 or the mixture of brown coal and calcium carbonate granule, and its structure promptly has several layers drawer type solid absorption dielectric layer, also rewinding formula solid absorption dielectric layer.

The efficient fume purifier of chemisorbed described in the utility model is owing to use the catalyst device, oxidized flue dust is adsorbed by the solid absorption medium, pernicious gases such as sulfur dioxide in the flue dust and nitric oxide can be removed in a large number, and the solid absorption medium adopts the mixture of brown coal or brown coal and calcium carbonate granule, with after can be as the fertilizer of kind of flowers and plants and greening, the processing of need not regenerating is than using other adsorbent economy.

The utility model will be further described for the contrast accompanying drawing below.

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

Fig. 2 is the plan structure schematic diagram of the utility model embodiment;

Fig. 3 is the utility model dust collecting process schematic flow sheet.

1 is the upper cone of clarifier among the figure; The 2nd, the spray thrower of clarifier; The 3rd, the screen cloth grid of clarifier; The 4th, the solid absorption medium of clarifier; The 5th, the clean-out plate of clarifier; The 6th, the filter chamber of clarifier; The 7th, the deflector of clarifier; The 8th, the Venturi tube of clarifier; The 9th, the lower cone cinder catcher of clarifier; The 10th, the dirt that connects of clarifier is coiled; The 11st, the ash hole of clarifier; The 12nd, the supporting leg of clarifier; The 13rd, the pure qi (oxygen) outlet of clarifier; The 14th, the water inlet pipe of clarifier; The 15th, the eddy flow plate of clarifier; The 16th, the flue dust air inlet of clarifier; The 17th, the catalyst-assembly of clarifier; The 18th, the cyclone of clarifier; The 19th, the choline device of clarifier; The 20th, the blow-off pipe of clarifier; The 21st, the magnetizer of clarifier; The 22nd, the supporting leg backing plate of clarifier; The 23rd, the air intake duct of clarifier; The 24th, boiler; The 25th, the recirculated water pond of removing contamination; The 26th, clarifier; The 27th, air-introduced machine; The 28th, chimney.

Multistage dedusting, purification are adopted in the design of the efficient fume purifier of chemisorbed described in the utility model, and with dry type and half dry type desulfurization, denitrogenation is an example with the clarifying smoke of two tons of boilers, purifies whole three parts of dividing:

One. the first order is the cyclone part, it is by air intake duct 23, flue dust air inlet 16, eddy flow plate 15, catalyst-assembly 17, lower cone cinder catcher 9, dry ash ash hole 11 constitutes, diameter is that the cyclone 18 and the lower cone cinder catcher 9 of garden cylindricality of 1200mm is integrally welded, perpendicular on the top of cyclone 18 inlet size is arranged is the flue dust air inlet 16 of 300mm * 300mm and the air intake duct 23 that a diameter is 50mm, hangs the V that packs in the porch of flue dust air inlet 16 and air intake duct 23 ₂O ₅Or MnO ₂Catalyst-assembly 17, it is the dry ash ash hole 11 of 200mm that a diameter is arranged in the bottom of lower cone cinder catcher 9.Middle coarse granule major part in this section is removed, and sulfur dioxide gas is oxidized to sulfur trioxide under the effect of catalyst.

Two. the second level is Venturi scrubber, it is by reducing pipe, trunnion, increaser, connect dirty dish 10 and blow-off pipe 20 formations, Venturi scrubbing pipe 8 is located at the center of cyclone 18, it also is unique smoke dust duct of 6 from cyclone 18 to filter chamber, the inlet diameter of Venturi scrubbing pipe 8 is 300mm-500mm, throat diameter is 120mm-250mm, is about half of air inlet, and the height of Venturi scrubbing pipe 8 is 600mm-2000mm, throat highly is 100mm, and one of placement has the dirty dish 10 of connecing of blow-off pipe 20 below Venturi scrubbing pipe 8.Flue dust by trunnion, enters increaser here by reducing pipe, and when gas passed trunnion, gas flow rate was very fast, the 15-50 meter per second, and the water droplet whips into a spray, dust is adsorbed by water smoke, and sulfur trioxide gas is met water and is generated sulfuric acid simultaneously, discharges together with sewage.

Three. the third level is a filter chamber, it is by deflector 7, stainless screen cloth grid 3 and fixed bed, the mixture of brown coal or brown coal and calcium carbonate granule constitutes solid absorbent 4, feed pipe 14, spray equipment 2 and pure qi (oxygen) outlet 13 are formed, communicate with pure qi (oxygen) outlet 13 by upper cone 1 on the filter chamber 6 of garden cylindricality, increaser following and Venturi scrubbing pipe 8 joins, the solid adsorbent bed of three layers of drawer type is set in the filter chamber 6, and solid absorption medium 4 is changed by the husky groove push-and-pull on the solid adsorbent bed, and the equivalent diameter of the mixture of solid absorption medium 4 brown coal or brown coal and calcium carbonate granule is 4-10mm, pH value is 6-7, and specific area is 300-600m ²/ g, unit weight are 0.5-0.9, and thickness of filter bed is 50-120mm, and one group of several spray thrower 2 that are connected to water inlet pipe 14 is all arranged on each layer solid absorption layer.Also solid adsorbent bed can be made rewinding formula structure in addition, outside tube, arrange several spray throwers 2, this simple in structure, be particularly suitable for the clarifying smoke of miniature boiler.In this one-level, middle microparticle, colloidal solid and sulfur dioxide, sulfur trioxide and nitride are removed by chemisorption and solid absorption, discharge by shower water solution.Wind speed is the 0.8-1.5 meter per second in the filter chamber 6.

Contrast Fig. 1 and Fig. 3, the efficient fume purifier of chemisorbed described in the utility model also need four auxiliary equipment, magnetizer 21, choline device 19, circulating pump and the recirculated water pond 25 of removing contamination.Because what solid absorption medium 4 used is the mixture of brown coal or brown coal and calcium carbonate granule, itself has acidity, and micropore is many, ventilates, the value resistance is little, advantages of good adsorption effect, thereby do not need a large amount of recirculated waters, for miniature boiler, also can adopt little poultry pond, the gap water supply dedusting.

The performance of the efficient fume purifier of chemisorbed described in the utility model is as follows:

1. dust removal efficiency: 99.9%

2. dustiness: inlet≤25 gram/rice ³Export≤100 milligrams/meter ³

3. lingemann blackness≤1 grade

4. dedusting granularity: 0.05-1000 micron

5. purify the adsorption zone wind speed: the 1-1.2 meter per second

6. equipment resistance loss: the 60-90 millimeter of water

7. adapt to the flue dust temperature: 20-400 ℃

8. desulfurization degree: 60-80%

9. take off nitride: 30-50%

10. filter medium: the mixture of brown coal or brown coal and calcium carbonate granule

11. adsorbent life cycle: three months

Claims

1, the efficient fume purifier of a kind of cleaning equipment that is used for environmental protection----chemisorbed is by centrifugal cyclone, magnetized drinking water spray wetting system, filter material layer, the lower cone dust arrester, treatment tank and valve constitute, the centrifugal cyclone and the lower cone dust arrester that have smoke air inlet fuse up and down, the top of every layer of solid absorption dielectric layer is equipped with magnetized drinking water spray wetting system, of the present utility model being characterised in that: the side at centrifugal cyclone 18 smoke air inlets (16) has an air intake duct (23), the porch of air inlet hangs a catalyst-assembly (17), place one by reducing pipe at the center of centrifugal cyclone (18), trunnion and increaser constitute Venturi tube (8) communicates centrifugal cyclone (18) and garden cylindricality filter chamber (6), several layers drawer type solid absorption dielectric layer (4) or a rewinding formula solid absorption dielectric layer are arranged in the filter chamber (6), and the solid absorption medium (4) in the garden cylindricality filter chamber (6) is to go up the brown coal of placement or the mixture of brown coal and calcium carbonate granule at stainless steel cloth (3).