CN2529090Y

CN2529090Y - Wet desulfurization cleaning device for fume of boiler

Info

Publication number: CN2529090Y
Application number: CN 02203020
Authority: CN
Inventors: 王晓利; 杨常青
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-08
Filing date: 2002-02-08
Publication date: 2003-01-01
Anticipated expiration: 2012-02-08

Abstract

The utility model relates to a wet desulphurization cleaning device for fume of boiler and an improvement based on a wet desulphurization dust remover for boiler, and the main improvement is that a venturi tube is vertically distributed. The utility model has the beneficial effects that as the venturi tube is vertically distributed, the fume and the water are mixed by same direction and long distance, the full contacting is realized and the dust and SO2 are most effectively collected, and the high-speed fume is re-collected by flushing to a water level positioned at the bottom of the venturi tube, the high-degree cleaning of the fume is achieved by two-stage dust removal and desulphurization. After a plurality of times of practically trial uses and tests, the dust removal efficiency is greater than 95 percentages, the desulphurization rate is greater than 60 percentages, and the effect of the dust removal is stable and the operation is convenient and simple. Meanwhile, the utility model has the characteristics of long service life, compact structure and small occupying space.

Description

The wet type desulfurizing boiler fume purifier

Technical field

The utility model relates to a kind of wet type desulfurizing boiler fume purifier.

Background technology

At present, wet boiler desulfurizing dust-collector commonly used, its Venturi tube all is a horizontal positioned.Its shortcoming is that gas, water distribution are inhomogeneous, influences the desulfurization and dedusting effect.In addition, Venturi tube also can occur, make the dust removing effects instability by the dust clogging.

Summary of the invention

Technical problem to be solved in the utility model provide a kind of efficiency of dust collection and desulfurization degree higher, dust removing effects is stable, long service life, compact conformation, wet type desulfurizing boiler fume purifier that floor space is little.

The technical scheme that its technical problem that solves the utility model adopts is: it is made up of tornado evaporator, Venturi tube, water circulating pump, spray head, circulating water pool, tornado evaporator is the drum shape that has loam cake, its underpart is a funnel-form, tornado evaporator is erect and is placed on the support, and the smoke evacuation tracheae tangent with the tornado evaporator sidewall is housed on the sidewall of the upper end of tornado evaporator; Venturi tube is erected at a side of tornado evaporator, its bottom one side is by being connected with tornado evaporator with the tangent pipeline of tornado evaporator sidewall, the gas outlet of pipeline is positioned at the funnel top of tornado evaporator bottom, the smoke inlet pipe that is equipped with suitable for reading in Venturi tube is equipped with spray head in the intersection center of smoke inlet pipe and Venturi tube; Circulating water pool is made up of the ashpit that falls, sedimentation basin and clear water reserviors, and three ponds are communicated with for the overflow mode, the ashpit that falls is positioned at the below of tornado evaporator, sedimentation basin is falling between ashpit and the clear water reserviors, and the water level when being full of water in the ashpit that falls is higher than the water level when being full of water in the sedimentation basin, and the water level of the water level when being full of water in the sedimentation basin when equaling to be full of water in the clear water reserviors; Spray head is connected with the discharge outlet of water circulating pump by pipeline, and water circulating pump is contained in the clear water reserviors.

The beneficial effects of the utility model are as follows:

(1) because Venturi tube is vertically placed, the long in the same way distance of cigarette G﹠W is mixed, reach the fullest contact, promptly reach trap dust and SO most effectively ₂, and the high speed flue gas is flushed to the Venturi tube bottom water surface and captures once more, and the two-stage dust-removal and desulfurizing makes flue gas reach high purification.

Through repeatedly practical probation and test: efficiency of dust collection is greater than 95%, and desulfurization degree is greater than 60%, and dust removing effects is stable, simple to operation.

(2) flue gas fully separates gas, water through tornado evaporator dehydration, make enter air-introduced machine flue gas no longer water content and dust, guarantee that air-introduced machine and rear portion flue are not corroded and heavy wear, have prolonged service life.

(3) whole deduster and flue gas contact site all adopt wear-resisting, acid resistant adhesive mortar layer, in the service life of having improved deduster effectively, guarantee that through evidence normal service life is more than 5 years.

The Venturi tube spray quinoline formula dedusting of (4) vertically placing is very little to whole deduster SR influence, test through reality: resistance＜1200Pa, so this desulphurization smoke purifier of boiler adapted, need not upgrade air-introduced machine, this desulfurizing purifier directly is installed, guarantee the normal operation of pot, need not increase other investment.

(5) this desulfurization gas cleaning compact conformation, volume is little, floor space is few, be convenient to the installation of the newly-increased deduster of old boiler, the former multi-tube dust cleaner place of being equipped with is also this desulfurizing purifier to be installed.

(6) adopt the recirculated water dedusting, conserve water resources, and sulfuric acid are in a large number removed with dust with the calcium sulfate that the calcium oxide reaction generates, and can not cause secondary pollution to environment.

(7) simple to operate, as long as water pump normally feeds water, and PH＞8 of in time adjusting water just can normally move, and carry out desulfurization and dedusting.

Description of drawings

Fig. 1 is structural representation of the present utility model (being the B-B cutaway view of Fig. 2).

Fig. 2 is the A-A profile of Fig. 1.

The specific embodiment

By the embodiment shown in Fig. 1,2 as can be known, it is made up of tornado evaporator 13, Venturi tube 3, water circulating pump 8, spray head 2, circulating water pool, tornado evaporator 13 is for having the drum shape of loam cake, its underpart is a funnel-form, tornado evaporator 13 is erect and is placed on the support 12, and the smoke evacuation tracheae 14 tangent with the tornado evaporator sidewall is housed on the sidewall of the upper end of tornado evaporator 13; Venturi tube 3 is erected at a side of tornado evaporator 13, its bottom one side is by being connected with tornado evaporator 13 with the tangent pipeline 5 of tornado evaporator sidewall, the gas outlet of pipeline 5 is positioned at the funnel top of tornado evaporator bottom, at the smoke inlet pipe 1 that is equipped with suitable for reading of Venturi tube 3, spray head 2 is housed in the smoke inlet pipe 1 and the intersection center of Venturi tube; Circulating water pool is made up of the ashpit 10 that falls, sedimentation basin 7 and clear water reserviors 9, and three ponds are communicated with for the overflow mode, the ashpit 10 that falls is positioned at the below of tornado evaporator 13, sedimentation basin 7 is falling between ashpit 10 and the clear water reserviors 9, and the water level when being full of water in the ashpit that falls is higher than the water level when being full of water in the sedimentation basin, and the water level of the water level when being full of water in the sedimentation basin when equaling to be full of water in the clear water reserviors; Spray head 2 is connected by the discharge outlet of pipeline 4 with water circulating pump 8, and water circulating pump 8 is contained in the clear water reserviors.

The position that tornado evaporator and Venturi tube contact with flue gas is equipped with wear-resisting, acid resistant adhesive mortar layer.

In Fig. 1,6 is wear-resisting, acid resistant adhesive mortar layer, and 11 is ash port.

Operation principle of the present utility model is as follows:

Boiler dust-laden and SO ₂Flue gas is directly entered by smoke inlet pipe 1, and the atomized water with spray head 2 ejections converges then, enters Venturi tube 3 again, and the cigarette G﹠W is fully contact in passing through the process of Venturi tube, and it is by submerged behind the bigger grit that dust is soaked cohesion.SO ₂Formed H by water-soluble separating ₂SO ₃Enter in the water.Dust was captured once more when flue gas was flushed to the Venturi tube bottom water surface, formed and contained a large amount of dusts and H ₂SO ₃Grey water slurry enter in the tornado evaporator 13 with flue gas, in tornado evaporator 13, because centrifugal action, flow down along wall after the grey water slurry that proportion is bigger is thrown toward barrel, in the ashpit 10 that falls that flows in the circulating water pools by ash tube 11.

Sloughed water and flue gas after being purified, caused chimney by air-introduced machine and enter atmosphere.

Enter H in the buck in the circulating water pool ₂SO ₃Generate CaSO with the basic species CaO that adds in the recirculated water (recirculated water is regulated PH 〉=8 through CaO commonly used or NaOH) reaction ₃

CaSO ₃Sink under water with dust, the water of clarification flows in the clear water reserviors 8, squeezes into spray head 2 by water circulating pump 7 once more, forms all circulations.

Be deposited in dust and CaSO in the pond ₃Constantly be eliminated, finish desulfurization and dedusting overall process.

Claims

1, a kind of wet type desulfurizing boiler fume purifier, it is characterized in that it is made up of tornado evaporator (13), Venturi tube (3), water circulating pump (8), spray head (2), circulating water pool, tornado evaporator (13) is for having the drum shape of loam cake, its underpart is a funnel-form, tornado evaporator (13) is erect and is placed on the support (12), and the smoke evacuation tracheae (14) tangent with the tornado evaporator sidewall is housed on the upper end sidewall of tornado evaporator (13); Venturi tube (3) is erected at a side of tornado evaporator (13), its bottom one side is connected with tornado evaporator (13) by the pipeline tangent with the tornado evaporator sidewall (5), the gas outlet of pipeline (5) is positioned at the funnel top of tornado evaporator bottom, at the smoke inlet pipe (1) that is equipped with suitable for reading of Venturi tube (3), spray head (2) is housed in the smoke inlet pipe (1) and the intersection center of Venturi tube; Circulating water pool is made up of the ashpit that falls (10), sedimentation basin (7) and clear water reserviors (9), and three ponds are communicated with for the overflow mode, the ashpit (10) that falls is positioned at the below of tornado evaporator (13), sedimentation basin (7) is positioned between ashpit (10) and the clear water reserviors (9), and the water level when being full of water in the ashpit that falls is higher than the water level when being full of water in the sedimentation basin, and the water level of the water level when being full of water in the sedimentation basin when equaling to be full of water in the clear water reserviors; Spray head (2) is connected by the discharge outlet of pipeline (4) with water circulating pump (8), and water circulating pump (8) is contained in the clear water reserviors.

2, wet type desulfurizing boiler fume purifier according to claim 1 is characterized in that the position that tornado evaporator and Venturi tube contact with flue gas is equipped with wear-resisting, acid resistant adhesive mortar layer.