CN201510821U

CN201510821U - Circulating type tail gas integrated processing system utilizing two stages of absorption tower and clinker-water separator

Info

Publication number: CN201510821U
Application number: CN2009202305865U
Authority: CN
Inventors: 邵志军
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-24
Filing date: 2009-08-24
Publication date: 2010-06-23
Anticipated expiration: 2019-08-24

Abstract

The utility model discloses a circulating type tail gas integrated processing system utilizing two stages of absorption tower and clinker-water separator. A spray tower is provided with a tail gas inlet, and is communicated with a packing absorbing tower by a tail gas circulating pipeline; the bottom parts of the spray tower and the packing absorbing tower are communicated with a circulating pool by a waste water collecting pipeline; waste water in the circulating pool is supplied to the clinker-water separator by a circulating pipeline; the clinker-water separator filters and separates the clink in the waste water; after being filtered by the clinker-water separator, clear water provides spraying water for the spray tower and the packing absorbing tower by a water purifying pipeline; a chemical feeding device A and a chemical feeding device B are communicated with the water purifying pipeline by a chemical feeding pump and a chemical feeding pipeline; after filtration, the tail gas is discharged through a smoke outlet; by utilizing the spray tower and the packing absorbing tower, harmful gases such as acidic gas, dioxin and the like in the tail gas can be removed thoroughly; by the chemical feeding device and the clinker-water separator, the waste water after filtration can be recycled for reusing; and the system has the advantages of high purifying efficiency, low reclamation cost, less occupied area and the like.

Description

Circulation two-stage absorption tower and lime-ash separator tail gas total system

Technical field:

The present invention relates to a kind of tail gas from incinerator treatment system, relate in particular to a kind of purification efficiency height, circulation two-stage absorption tower and lime-ash separator tail gas total system that operating cost is little.

Background technology:

Contain sour gas (HCL behind the solid waste combustion in the tail gas more, SO2, NO2, HF), dioxin (PCDDS, pernicious gas such as PCDFS), these gases will be as causing serious environmental pollution without handling in the direct discharged air, for reaching air cleaning, exhaust treatment system commonly used adopts desulfurizing tower more in the practice, spray equipment, sack cleaner combines exhaust gas processing device, though similar techniques can reach desulfurization, the dedusting purpose, but need to adopt a large amount of spray waters, contain in the processed waste water more and filter the back harmful substance, easily cause secondary pollution, and there is complex structure in similar devices, shortcomings such as floor space is big.

Summary of the invention:

The present invention is directed to above the deficiencies in the prior art, a kind of purification efficiency height, operating cost is little, floor space is few, closed cycle reaches non-wastewater discharge circulation two-stage absorption tower and lime-ash separator tail gas total system are provided.

For realizing above technical scheme, the technical scheme that the utility model patent adopts is:

Circulation two-stage absorption tower and lime-ash separator tail gas total system are by spray column, packed absorber, the tail gas circulating line, the wastewater collection pipeline, circulatory pool, chemicals dosing plant A, chemicals dosing plant B, the lime-ash separator, dosing pump, drug feeding pipeline, circulating line, the water purification pipeline is formed, described spray column is communicated with by the tail gas circulating line with packed absorber, spray column, the packed absorber bottom is communicated with circulatory pool by the wastewater collection pipeline, circulatory pool waste water provides to the lime-ash separator by circulating line, carry out lime-ash separation and filtration in the waste water by the lime-ash separator, satisfy the requirement of reuse and discharge standard clear water, clear water is a spray column by the water purification pipeline after the lime-ash separator filters, packed absorber provides the spray water, chemicals dosing plant A, chemicals dosing plant B passes through dosing pump, drug feeding pipeline and water purification pipeline are communicated with, described spray column is provided with the tail gas air inlet, and described packed absorber is provided with exhanst gas outlet.

Described lime-ash separator is made up of water inlet, stirring area, coagulation district, sloping plate deposition district, delivery port, impurity outlet.

Described packed absorber adopts ceramic Pall ring filler.

The utility model patent advantage is:

(1) adopts ceramic Pall ring packed absorber, characteristics are that specific area is big, high temperature resistant, regardless of from its orientation, be showered into the liquid on the filler, what have flows along outer wall, the fenestella that passes that has flows to inwall, what have flows to the center along blade, increases thereby reach the liquid dispersion degree, and the utilization rate of filler inner surface is improved; Because of blade has kept original wall surface, increased the new surface of otch again, thus bigger before the specific area ratio is windowed, increased the less turbulence of gas, staggered windowing dwindled the stagnation dead band between adjacent filler.

(2) adopt lime-ash separator action principle to be: to enter the sloping plate deposition district after buck is injected stirring coagulation district by mortar pump, obtain to satisfy the clear water of reuse and discharge standard at last by filtering layer, the backwashing system that utilizes configuration in case of necessity carries out backwash to filtrate etc.

(3) utilize spray column and packed absorber,, thoroughly remove S, CL in the flue gas by the circulation alkali liquor effect of (containing acid fume gas sig water absorption pattern).

(4) patent of the present invention by chemicals dosing plant and lime-ash separator with circulatory pool waste water cycling and reutilization, purification efficiency can reach more than 95%, reclaim about 0.06 yuan of clear water cost per ton, reclaim the clear water rate between 90～95%, can accomplish the closed cycle of non-wastewater discharge, have advantages such as the little land used of floor space is few, saving investment.

Description of drawings:

Fig. 1 is the utility model patent structure schematic diagram;

Fig. 2 is the utility model patent lime-ash separator partial structurtes enlarged drawings;

The specific embodiment:

As shown in Figure 1, circulation two-stage absorption tower and lime-ash separator tail gas total system are made up of spray column 1, packed absorber 2, tail gas circulating line 3, wastewater collection pipeline 4, circulatory pool 5, chemicals dosing plant A6, chemicals dosing plant B7, lime-ash separator 8, dosing pump 9, drug feeding pipeline 10, circulating line 11, water purification pipeline 12, tail gas air inlet 13, exhanst gas outlet 14;

As shown in Figure 2, lime-ash separator 8 is made up of water inlet 81, stirring area 82, coagulation district 83, sloping plate deposition district 84, delivery port 85, impurity outlet 86.

During concrete enforcement, tail gas enters spray column 1 through tail gas air inlet 13 behind the solid waste combustion, flying dust carries out dedusting after water purification pipeline 12 provides the water purification spray, tail gas enters into packed absorber 2 inside by tail gas circulating line 3 after dedusting, and packed absorber 2 adopts ceramic Pall ring filler, be showered into the liquid on the filler, what have flows along outer wall, and the fenestella that passes that has flows to inwall, and what have flows to the center along blade, increase thereby reach the liquid dispersion degree, the utilization rate of filler inner surface is improved; Because of blade has kept original wall surface, increased the new surface of otch again, it is bigger before so the specific area ratio is windowed, increased the less turbulence of gas, staggered windowing, dwindled the stagnation dead band between adjacent filler, thereby reach in the waste water dedusting with filter poisonous, the harmful substance purpose, tail gas waste water after spray column 1 and packed absorber 2 filter is collected into circulatory pool 5 by wastewater collection pipeline 4, waste water is communicated to the water inlet 81 of lime-ash separator 8 in the circulatory pool 5 by circulating line 11, waste water is after coagulation district 83 is mixed, enter stirring area 82 and carry out strong agitation, gas is gone out by water, the proportion of slag particle is corresponding increase, 84 carry out sedimentation and filtration in the sloping plate deposition district then, 84 fens M intervals, sloping plate deposition district, be convenient to improve deposition efficiency, water purification flows out from delivery port 85 behind sedimentation and filtration, filtering rear impurity discharges from impurity outlet 86, this moment is for increasing and the reaction of waste water middle acid substance, chemicals dosing plant A6, chemicals dosing plant B7 adds alkaline matter and flocculant respectively, by dosing pump 9, drug feeding pipeline 10 enters water purification pipeline 12, delivery port 85 is communicated with water purification pipeline 12, water purification pipeline 12 provides the spray water for spray column 1 and packed absorber 2, waste water is collected into circulatory pool 5 by wastewater collection pipeline 4 after spray column 1 and packed absorber 2 filter, behind lime-ash separator 8 sedimentation and filtrations, circulate in utilization then, filter back tail gas and discharge through exhanst gas outlet 14.

The utility model patent utilization spray column and packed absorber can thoroughly be removed the pernicious gases such as sour gas in the tail gas, dioxin (PCDDS, PCDFS), can make the rear waste water circulation recycling of filtration by chemicals dosing plant and seperator of ash and water, have the advantages such as purification efficiency height, cost recovery is little, floor space is few.

Claims

1. circulation two-stage absorption tower and lime-ash separator tail gas total system are by spray column, packed absorber, the tail gas circulating line, the wastewater collection pipeline, circulatory pool, chemicals dosing plant A, chemicals dosing plant B, the lime-ash separator, dosing pump, drug feeding pipeline, circulating line, the water purification pipeline is formed, it is characterized in that: described spray column is communicated with by the tail gas circulating line with packed absorber, spray column, the packed absorber bottom is communicated with circulatory pool by the wastewater collection pipeline, circulatory pool waste water provides to the lime-ash separator by circulating line, chemicals dosing plant A, chemicals dosing plant B passes through dosing pump, drug feeding pipeline and water purification pipeline are communicated with.

2. circulation two-stage absorption tower according to claim 1 and lime-ash separator tail gas total system is characterized in that: described lime-ash separator water inlet, stirring area, coagulation district, sloping plate deposition district, delivery port, impurity outlet are formed.

3. circulation two-stage absorption tower according to claim 1 and lime-ash separator tail gas total system, it is characterized in that: described packed absorber adopts ceramic Pall ring filler.