CN208642304U - A kind of desulphurization plant - Google Patents
A kind of desulphurization plant Download PDFInfo
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- CN208642304U CN208642304U CN201821181472.1U CN201821181472U CN208642304U CN 208642304 U CN208642304 U CN 208642304U CN 201821181472 U CN201821181472 U CN 201821181472U CN 208642304 U CN208642304 U CN 208642304U
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- circulatory pool
- absorbing cabin
- storehouse
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Abstract
The utility model discloses a kind of desulphurization plants, including pulp pond, at least two-stage absorbing cabin, demisting storehouse, air inlet pipe, it is connected between adjacent two-stage absorbing cabin, every level-one absorbing cabin top is equipped with spray equipment, it is corresponded in every level-one absorbing cabin bottom and is equipped with circulatory pool, it is mutually indepedent between each circulatory pool, desulfurizing agent is equipped in circulatory pool；Each circulatory pool with its corresponding to absorbing cabin in spray equipment connect, the desulfurizing agent in circulatory pool can be admitted to spray equipment；Every level-one absorbing cabin bottom with its corresponding to circulatory pool between be equipped with the pipeline that is connected to the two, pipeline is passed through the desulfurizing agent liquid level of circulatory pool or less；Oxidation air compartment system is equipped in first order circulatory pool corresponding to first order absorbing cabin.The utility model is able to produce out the desulfurized gypsum of high-quality while the requirement for meeting minimum discharge, accomplishes that, without desuifurized outlet, sulfur removal technology water all recycles, no waste water outlet.
Description
Technical field
The utility model belongs to wet desulfurization of flue gas by limestone-gypsum method field, and in particular to a kind of desulphurization plant.
Background technique
High sulphur-containing exhaust gas is the Air Pollutants discharged in nonferrous metallurgical process, has annoying coloured gold always
Belong to industrial expansion.To reduce pollution to atmospheric environment, China in the industries such as coal electricity, steel low sulfur concentration waste gas dedusting and
Technical field of desulfurization has carried out a large amount of research, implements a large amount of desulfurization project, achieves preferable effect.But due to smelting
Exhaust emission concentration is high, fluctuation is big, the air quantity variation factors such as greatly, and the desulfurization technology of the above industry is for non-ferrous metal metallurgy kiln
Furnace dust-removal and desulfurizing, generally existing following main problem:
(1) treatment effect is unstable, is difficult to reach qualified discharge and forms the dual purpose of gypsum.
Since non-ferrous metal metallurgy industry exhaust emission concentration is high, fluctuation is big, the air quantity variation factors such as greatly, traditional spray
Leaching method limestone-gypsum sulfur removal technology is difficult to qualified discharge, and the removal efficiency deficiency of sulfur dioxide also can not just ensure de-
The smooth formation of sulphur gypsum.
The formation of absorption and gypsum to sulfur dioxide, reaction condition needed for the two is contradictory.Sulfur dioxide absorption
The environment needed more meta-alkalescence is better, and pH environment needed for forming gypsum is lower than sulfur dioxide absorption.Current desulfurization
Project could not the above-mentioned contradiction of very good solution, a circulatory pool is only set, and the whole mixing circulation in a circulatory pool of slurries is
Reach emission request and form gypsum, is purely changed from increasing desulfurizing tower quantity and circulation pool volume etc. come
Into although being also able to achieve target, the construction investment of desulphurization system and operating cost are high.
(2) infrastructure investment is big, operating cost is high, and operational administrative is complicated.
Traditional limestone-gypsum sulfur removal technology is relative complex, and infrastructure is more, containing a large amount of flue, takes off
Sulphur tower and circulatory pool, take up a large area, and one time cost of investment is big.Further, since using higher liquid-gas ratio, thus have chosen
The high-power electromechanical equipment of big flow substantially increases the operation power consumption of desulphurization system.
(3) sorbent utilization is low, desulfuration efficiency is low.
Since traditional spray process desulfuration efficiency is low, and it is only provided with a circulatory pool, in order to guarantee that desulfurization index is up to standard,
In the case where desulfurizing agent (agstone slurries) has not utilized, new desulfurizer slurry is just supplemented to circulatory pool, is discharged simultaneously
Original slurries thus waste a large amount of unemployed desulfurizing agent, form a kind of vicious circle, also improve desulphurization system
Operating cost.
(4) a large amount of desulfurization wastewaters and desuifurized are discharged, it is desuifurized to be difficult to handle, form new pollution sources.
Since sorbent utilization is not high, it is difficult to form the desulfurized gypsum product that can be efficiently used, thus produce big
It measures desuifurized.Desuifurized moisture content is high, and dehydration is difficult, if heavy metals exceeding standard therein, may be identified as dangerous solid waste,
It is difficult to dispose.Some Enterprises are discharged into Tailings Dam for desuifurized, generate desulfurization wastewater by diafiltration, are handled, are handled
Difficulty is larger, and processing cost is high.
Utility model content
In view of the above-mentioned problems, the utility model be intended to provide one kind can efficient stable desulfurization and formed high-quality desulfurized gypsum
Dual-purpose desulphurization plant.
The technical solution that the utility model solves the problems, such as is: a kind of desulphurization plant, including pulp pond, at least two-stage absorb
Storehouse, with the demisting storehouse of afterbody absorbing cabin connection, the air inlet pipe that is connect with first order absorbing cabin, between adjacent two-stage absorbing cabin
Connection, every level-one absorbing cabin top are equipped with spray equipment, correspond in every level-one absorbing cabin bottom and are equipped with circulatory pool, respectively follow
It is mutually indepedent between cisterna ambiens, desulfurizing agent is equipped in circulatory pool；
Each circulatory pool with its corresponding to absorbing cabin in spray equipment connect, the desulfurizing agent in circulatory pool can be sent
Enter spray equipment；
Every level-one absorbing cabin bottom with its corresponding to circulatory pool between be equipped with pipeline that the two be connected to, the pipeline leads to
Enter the desulfurizing agent liquid level of circulatory pool or less；
Oxidation air compartment system is equipped in first order circulatory pool corresponding to first order absorbing cabin.
In above scheme, every level-one absorbing cabin is all to correspond to have a circulatory pool, individual absorption, independent loops, phase
For traditional structure that a circulatory pool is only arranged and corresponds to multiple absorbing cabins, it is better able to realize Precise control, first
Grade absorber portion focuses on to build the reaction condition of oxidation gypsum, and the pH value in first order circulatory pool can be controlled in 5.0~5.5 ranges,
Guarantee forms high-quality gypsum, and subsequent absorption section then builds emphatically the reaction condition of sulfur dioxide absorption, and pH value can be controlled big
In 5.8 ranges, guarantee the stably reaching standard discharge of sulfur dioxide.This mode improves the utilization rate of desulfurizing agent, gypsum product
Quality it is more preferable.
The spray equipment can use the device of the prior art, and existing desulfurization spray head can be used in spray head.
Further, liquid inlet and liquid outlet, each liquid inlet and liquid are equipped on pulp pond and each circulatory pool
Body exit is equipped with flow control valve.
The purpose of design entry and exit is can to install communicating pipe according to process requirement at entry and exit for drain and feed liquor
Road.
Preferably, the pulp pond is connect with afterbody circulatory pool by pipeline, the liquid outlet in pulp pond and last
The liquid-inlet in primary cycle pond connects；
Pipeline connection, the liquid outlet and previous stage circulatory pool of rear stage circulatory pool are passed sequentially through between each adjacent circulation pond
Liquid-inlet connection.
This design does not need interim pipe laying, but just directly that Pipe installing is good in design-build.
Further, washing storehouse, the washing storehouse while and the first order are equipped between air inlet pipe and first order absorbing cabin
Absorbing cabin is connected to air inlet pipe, is correspondingly provided with kitchen sink in washing orlop portion；Spray equipment is equipped on kitchen sink top.
Specifically, the air inlet pipe is connected to washing storehouse lower end, gas outlet is provided in washing storehouse upper end；
Air inlet is provided in the lower end of every level-one absorbing cabin and the diagonal upper end in lower end is provided with gas outlet；
The gas outlet in washing storehouse is connected to the air inlet of first order absorbing cabin by air guide channel；
In adjacent two-stage absorbing cabin, the gas outlet of previous stage absorbing cabin and the air inlet of rear stage absorbing cabin are logical by air guide
Road connection；
It is provided with air inlet in the lower end in demisting storehouse, the gas outlet of afterbody absorbing cabin and the air inlet in demisting storehouse are by leading
The connection of gas channel.
There is no setting washing storehouse and kitchen sinks in traditional technology, but are directly passed through flue gas after passing through bag-type dust
Absorbing cabin is absorbed, and what bag-type dust removed is the dust such as heavy metal, if the failures such as cut occurs in cloth bag, staff is
Indiscoverable, once cut means that dust largely leaks, heavy metal etc. can enter absorbing cabin with flue gas, and then fall into
First order circulatory pool causes the gypsum product formed in pond unqualified, becomes waste product.In order to enable the heavy metal etc. in dust is engaged in
It must eliminate, additional setting washing storehouse and kitchen sink, to flue gas ash removal and cooling.The flue dust of washing section is recycled as matallurgical products,
Subsequent fume treatment is not only contributed to, also can reduce cost.
Preferably, the washing storehouse, absorbing cabin, demisting storehouse, circulatory pool, kitchen sink, pulp pond are using corrosion resistance
Plate assembles the box-structure being spliced.
Above scheme has abandoned traditional desulfurizing tower and pipeline, and using box-structure, circulatory pool is in lower layer, and absorbing cabin is upper
Layer, combination is convenient, compact-sized, occupied area is small, pipeline is short, operation is smooth.
Further, on the top of every level-one absorbing cabin, in the absorbing cabin, the top of spray equipment is equipped with inclined plate, institute
State the outlet open height that inclined plate height is no more than absorbing cabin；
Two sides are equipped with apparatus for eliminating sludge above and below inclined plate.
In the prior art flue gas and be sprayed at form suspended particulate in absorbing cabin after be easy the fouling at the top of absorbing cabin, design
After inclined plate, fouling position is located on inclined plate, and apparatus for eliminating sludge includes the high-pressure nozzle and high pressure spray for being arranged in inclined plate or more two sides
The high-pressure pump of pipe connection periodically washes away inclined plate by high-pressure hydraulic and carries out scale removal, and inclined plate has the function of even gas.
Further, the oxidation air compartment system include blower, the ventilation duct that is connect with blower, in going out for ventilation duct
Array is equipped with multiple air holes at mouthful；
The first order recycles bottom of pond portion and is equipped with blender, and the outlet of the ventilation duct is set to desulfurizing agent liquid level hereinafter, and leaning on
The blade of nearly blender, the export direction of ventilation duct and the action direction of blender are parallel；
It is not provided with oxidation air compartment system in other circulatory pools in addition to first order circulatory pool, but is equipped with blender.
The action direction of blender is the proprietary term of this field, and the meaning is exactly pair generated after the blade of blender rotates
The thrust direction of liquid.
The outlet of part ventilation duct under liquid, which is arranged near blender, to be for the improvement of oxidation air compartment system,
And it is parallel with blender action direction, so as to the Optimal Distribution of oxidation air and the efficient utilization of oxygen.
Further, the demisting the top of the warehouse is equipped with chimney, and demisting orlop portion is correspondingly provided with reservoir, demisting storehouse and water storage
The pipeline for being connected to the two is equipped between pond.
Water in reservoir is transported to pulp pond configuration desulfurizer slurry through pump, to realize the closed circuit of sulfur removal technology water
Circulation, accomplishes no waste water outlet.
Using the sulfur removal technology of above-mentioned desulphurization plant, include the following steps:
Select lime stone solution as desulfurizing agent.
A) make flue gas by cleaner, remove a part of dust in flue gas；
B) flue gas after dedusting enters first order absorbing cabin by air inlet pipe, controls the desulfurization in first order circulatory pool
The desulfurizing agent that spray equipment of the pH value of agent in 5.0~5.5 ranges, flue gas and first order absorbing cabin sprays comes into full contact with, cigarette
A large amount of sulfur dioxide in gas are desulfurized agent and absorb to form calcium sulfite, and calcium sulfite falls into after first order circulatory pool, warp
The oxygen forced oxidation that peroxidating air distribution system provides forms gypsum；
C) unabsorbed sulfur dioxide with flue gas goes successively to subsequent absorption storehouse in first order absorbing cabin, controls subsequent
The pH value of desulfurizing agent in circulatory pool is greater than 5.8, and most sulfur dioxide is after in the flue gas after the first order absorbs
Continuous absorbing cabin is absorbed, and flue gas is purified, and reaches discharge standard；The slurries for absorbing a large amount of sulfur dioxide enter each subsequent suction
Receive the circulation of circulatory pool corresponding to storehouse；
Subsequent absorption storehouse is equipped with one or more, if be equipped with multiple, the cloth of each absorbing cabin and the circulatory pool corresponding to it
It sets and the control of pH value is all the same；
When the effective component of desulfurizing agent in certain level-one circulatory pool is consumed, pulp pond is connected by pipeline and is followed with afterbody
Cisterna ambiens and each adjacent circulation pond is sequentially connected by pipeline, controls the flow of flow control valve, supplemented from pulp pond fresh
Desulfurizing agent primary cycle pond to the end, while the serum portion in afterbody circulatory pool is sent into previous stage circulatory pool, by this
Serum portion in rear stage circulatory pool is successively sent into adjacent previous stage circulatory pool by method, to control institute in each circulatory pool
The total amount of the pH value and desulfurizing agent that need forms balance；
D) purification that afterbody absorbing cabin is discharged flue gas up to standard flows into demisting storehouse, removes in flue gas in demisting storehouse
Moisture after discharge flue gas, the water recycling of generation.
In above-mentioned technical process, desulfurization slurry classified utilization, to the maximum extent by effective calcium utilization, from afterbody to
The active calcium ion content of level-one, every level-one reduces, and the first order forms high-quality gypsum, and subsequent circulatory pool ensure that sulfur dioxide is inhaled
Receipts ability, and play the role of checking on.Due to realizing fining grading control, so that absorbing 1m3Flue gas needed for liquid
Volume (liquid-gas ratio) significantly reduces, and the liquid-gas ratio of traditional technology is generally 20:1 or more, and use after above-mentioned technique liquid-gas ratio for
8:1~12:1.
Further, washing storehouse, the washing storehouse while and the first order are equipped between air inlet pipe and first order absorbing cabin
Absorbing cabin is connected to air inlet pipe, is correspondingly provided with kitchen sink in washing orlop portion；Spray equipment is equipped on kitchen sink top；
After step a), before step b), the flue gas by dedusting initially enters washing storehouse, is dropped using clear water to flue gas
Mild further dedusting, flue dust fall into kitchen sink recycling.
The remarkable result of the utility model is:
1. adding additional washing storehouse and kitchen sink, eliminates a large amount of flue dust in flue gas and cool down to flue gas, it can
It prevents from causing damages because flue dust is caused to be revealed for the dust suppression of front (such as bag-type dust) failure, eliminates weight in subsequent gypsum
The hidden danger of overrun metal content.
2. reaching high-efficiency desulfurization by the condition for accurately controlling reaction and forming the dual purpose of high-quality desulfurized gypsum.
Absorbing cabin and corresponding circulatory pool independently recycle, and the reaction environment built of different circulatory pool difference.?
First order absorption focuses on to build the reaction condition of oxidation gypsum, and guarantee forms high-quality gypsum；Subsequent absorption section, which is then built emphatically, inhales
The reaction condition for receiving sulfur dioxide, ensure that the removal efficiency of sulfur dioxide, while can meet the requirement of minimum discharge.
In addition, just because of the control environment for creating fining, the desulfurization absorptive unit of independent loops has anti-very well
Impact force can adapt to the fluctuation of flue gas flow and content of sulfur dioxide, and ensure that also can be steady in the case where sulfur content surges
Determine qualified discharge.
3. process water whole closed circulation accomplishes no waste water outlet, eliminates desulfurization wastewater processing links.Provided with technique
Water reservoir, to recycle gypsum removing water, equipment cleaning water and except fog, the process water pump of collection is delivered to pulp pond and matches
New desulfurization slurry is set, accomplishes no waste water outlet.
4. reducing liquid-gas ratio and power consumption, operating cost is significantly reduced.Due to realizing fining grading control, so that
Absorb 1m3Flue gas needed for liquid volume (liquid-gas ratio) significantly reduce, the liquid-gas ratio of traditional technology is generally 20:1 or more, and
For 8:1~12:1, consume to power of motor reduces accordingly liquid-gas ratio after using point utility model technique, significantly reduces desulfurization
The power consumption of system.
5. using modular plank frame, traditional desulfurizing tower and a large amount of pipelines are abandoned, circulatory pool is absorbed in lower layer
Unit is compact-sized, occupied area is small on upper layer, and pipeline is short, and rationally distributed, combination flexibly, not only meets desulfurization requirement, moreover it is possible to
It is enough to coordinate well with surrounding enviroment.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is the utility model desulphurization plant main view.
Fig. 2 is the utility model desulphurization plant sectional view.
Fig. 3 is the utility model desulphurization plant top view.
Fig. 4 is the utility model desulphurization plant side view.
In figure: 1- pulp pond, 2- absorbing cabin, 3- demisting storehouse, 4- air inlet pipe, 5- spray equipment, 6- circulatory pool, 7- oxidation are empty
Gas compartment system, 8- wash storehouse, 9- kitchen sink, the gas outlet 10-, 11- air inlet, 12- air guide channel, 13- inclined plate, 14- stirring
Machine, 15- chimney, 16- reservoir, 17- emergency lagoon, 18- circulating pump, 19- mountain flour storehouse, 20- apparatus for eliminating sludge, 71- blower, 72- are logical
Air hose.
Specific embodiment
For ease of description, the description of the relative positional relationship (such as: upper and lower, left and right) of each component is according to explanation
Restriction effect is not played to the structure of this patent come what is be described in the Butut direction of book attached drawing.
As shown in figures 1-4, a kind of desulphurization plant, including pulp pond 1, emergency lagoon 17, at least two-stage absorbing cabin 2, with it is last
The demisting storehouse 3 of the connection of first order absorption storehouse 2, the washing storehouse 8 being connected to first order absorbing cabin 2, the air inlet pipe 4 being connected to washing storehouse 8.
Kitchen sink 9 is correspondingly provided in washing 8 bottom of storehouse.Spray equipment 5 is equipped on 9 top of kitchen sink.
Every 2 top of level-one absorbing cabin is equipped with spray equipment 5.
The air inlet pipe 4 is connected to washing 8 lower end of storehouse.Gas outlet 10 is provided in washing 8 upper end of storehouse.
Air inlet 11 is provided in the lower end of every level-one absorbing cabin 2 and the diagonal upper end in lower end is provided with gas outlet 10.
The gas outlet 10 for washing storehouse is connected to the air inlet 11 of first order absorbing cabin 2 by air guide channel 12.
In adjacent two-stage absorbing cabin 2, the gas outlet 10 of previous stage absorbing cabin 2 and the air inlet 11 of rear stage absorbing cabin 2 are logical
Cross the connection of air guide channel 12.
Air inlet 11, the air inlet of the gas outlet 10 and demisting storehouse 3 of afterbody absorbing cabin 2 are provided in the lower end in demisting storehouse 3
Mouth 11 is connected to by air guide channel 12.
The top of spray equipment 5 is equipped with inclined plate 13 on the top of every level-one absorbing cabin 2, in the absorbing cabin 2.It is described oblique
13 height of plate is no more than 10 height of gas outlet of absorbing cabin 2.Apparatus for eliminating sludge 20 is equipped in about 13 two sides of inclined plate.Apparatus for eliminating sludge
20 include being arranged in the high-pressure nozzle of about 13 two sides of inclined plate, the high-pressure pump connecting with high-pressure nozzle, is periodically rushed by high-pressure hydraulic
Brush inclined plate 13 carries out scale removal.And inclined plate 13 has the function of even gas.
It is corresponded in every 2 bottom of level-one absorbing cabin and is equipped with circulatory pool 6.It is mutually indepedent between each circulatory pool 6, circulatory pool 6
It is interior to be equipped with desulfurizing agent.
Each circulatory pool 6 with its corresponding to absorbing cabin 2 in spray equipment 5 connect.Desulfurizing agent in circulatory pool 6 can
Spray equipment 5 is sent by pipeline by circulating pump 18.
Every 2 bottom of level-one absorbing cabin with its corresponding to circulatory pool 6 between be equipped with the pipeline that is connected to the two.The pipeline
It is passed through the desulfurizing agent liquid level of circulatory pool 6 or less.
Liquid inlet and liquid outlet are equipped on pulp pond 1 and each circulatory pool 6.Each liquid inlet and liquid outlet
Equipped with flow control valve.The purpose of design entry and exit can be installed according to temporary needs at entry and exit for drain and feed liquor
Connecting pipe.Or just directly pipeline is connected when building equipment, the arrangement form of pipeline are as follows: pulp pond 1 is connected by pipeline
It is connect with the liquid outlet of afterbody circulatory pool 6, pulp pond 1 with the liquid-inlet of afterbody circulatory pool 6；It will by pipeline
Each adjacent circulation pond 6 is sequentially connected, and the liquid outlet of rear stage circulatory pool 6 is connect with the liquid-inlet of previous stage circulatory pool 6.
Oxidation air compartment system 7 is equipped in first order circulatory pool 6 corresponding to first order absorbing cabin 2.The oxidation is empty
The ventilation duct 72 that gas compartment system 7 includes blower 71, connect with blower 71.It is equipped in the exit array of ventilation duct 72 multiple
Stomata.6 bottom of first order circulatory pool is equipped with blender 14.The outlet of the ventilation duct 72 be set to desulfurizing agent liquid level hereinafter, and
Close to the blade of blender 14.The export direction of ventilation duct 72 is parallel with the action direction of blender 14.
It is not provided with oxidation air compartment system 7 in other circulatory pools 6 in addition to first order circulatory pool 6, but is equipped with stirring
Machine 14.
Chimney 15 is equipped at the top of the demisting storehouse 3.3 bottom of demisting storehouse is correspondingly provided with reservoir 16.Demisting storehouse 3 and reservoir
The pipeline for being connected to the two is equipped between 16.
The washing storehouse 8, absorbing cabin 2, demisting storehouse 3, circulatory pool 6, kitchen sink 9, pulp pond 1 are using corrosion resistance plate
Material assembles the box-structure being spliced.For example it is welded using stainless steel plate.
Agstone is delivered to weighing hopper by powder cabin 19 first before starting by desulfurization, is transported to pulp by screw machine after metering
Pond, under the action of blender, agstone is dissolved in the water, and forms the slurries of 16~20% concentration.After the completion of slurry configurations,
Setting uninterrupted is required according to technique, is transported to circulatory pools at different levels.
Sulfur removal technology carries out as follows:
A) make flue gas by cleaner (not shown), remove a part of dust in flue gas.By the cigarette of dedusting
Gas initially enters washing storehouse 8.Using clear water to flue gas cool-down and further dedusting.Flue dust falls into the recycling of kitchen sink 9, can be used for smelting
Refining.
B) flue gas after dedusting enters first order absorbing cabin 2 by air inlet pipe 4.It controls in first order circulatory pool 6
The pH value of desulfurizing agent is in 5.0~5.5 ranges, and the concentration of slurry to keep relative stability.Spray in flue gas and first order absorbing cabin 2
The desulfurizing agent that shower device 5 sprays comes into full contact with.A large amount of sulfur dioxide in flue gas are desulfurized agent and absorb to form calcium sulfite.Sulfurous
Sour calcium falls into after first order circulatory pool 6, by the oxygen forced oxidation that oxidation air compartment system 7 provides, by sulfurous acid
Calcium is oxidized to calcium sulfate, and then forms gypsum.
Gypsum slurries are pumped into the concentration of gypsum cyclone by discharge, and the gypsum slurries after concentration enter vacuum belt dehydration
Machine, the gypsum surface moisture content after dehydration are no more than 10%.Dewatered gypsum be stored in gypsum warehouse storage to
Fortune.The overflowing liquid portion that gypsum cyclone is separated flows back into first order circulatory pool 6, and the drainage of crossing of gypsum dehydration generation then returns
Reservoir 16 is recycled, and crosses drainage and all collects reuse, not outlet.
C) unabsorbed sulfur dioxide with flue gas goes successively to subsequent absorption storehouse 2 in first order absorbing cabin 2.After control
The pH value of desulfurizing agent in continuous circulatory pool 6 is greater than 5.8.Most sulfur dioxide exists in flue gas after the first order absorbs
Subsequent absorption storehouse 2 is absorbed, and flue gas is purified, and reaches discharge standard.Absorb a large amount of sulfur dioxide slurries enter it is each after
Circulatory pool circulation 6 corresponding to continuous absorbing cabin 2.
Subsequent absorption storehouse 2 is equipped with one or more, if be equipped with multiple, each absorbing cabin 2 and the circulatory pool 6 corresponding to it
The control of arrangement and pH value is all the same.
When the effective component of desulfurizing agent in certain level-one circulatory pool 6 is consumed, passes through pipeline and connect pulp pond 1 and afterbody
Circulatory pool 6 and each adjacent circulation pond 6 is sequentially connected by pipeline.The flow for controlling flow control valve is mended from pulp pond 1
Fresh desulfurizing agent primary cycle pond 6 to the end is filled, while the serum portion in afterbody circulatory pool 6 is sent into previous stage circulation
Pond 6.The serum portion in rear stage circulatory pool 6 is successively according to said method sent into adjacent previous stage circulatory pool 6, it is each to control
Required pH value and the total amount of desulfurizing agent in circulatory pool 6 form balance.
D) purification that afterbody absorbing cabin 2 is discharged flue gas up to standard flows into demisting storehouse 3.Smoke abatement is removed in demisting storehouse 3
Flue gas is discharged after moisture in gas, the water of generation enters reservoir 16.
In the equipment of above-described embodiment, absorbing cabin 2 is preferably provided with three, and respectively first order absorbing cabin, the second level absorbs
Storehouse, afterbody absorbing cabin；Corresponding circulatory pool 6 is also equipped with three Wei not first order circulatory pool, second level circulatory pool, last
Primary cycle pond.
Illustrate the technological effect of three-stage apparatus with one group of specific data below.
In washing storehouse, the absorptivity of sulfur dioxide is about 2%, sulfur dioxide concentration 40000mg/m3。
First order absorbing cabin cooperation first order circulatory pool forms gypsum, first order circulation for sulfur dioxide absorption and oxidation
PH in pond maintains 5.0~5.5.In the first order stage, absorption rate of sulfur dioxide is about 60%, calcium carbonate proportion: 5~10%,
Calcium sulfite ratio: 90~95%, remaining sulfur dioxide concentration is 16000mg/m3。
Absorbing cabin cooperation second level circulatory pool in the second level is mainly used for absorbing most sulfur dioxide, and absorbability is better than
First stage.PH in the circulatory pool of the second level maintains to be greater than 5.8.In the second level stage, absorption rate of sulfur dioxide is about 85%~
90%, calcium carbonate proportion: 40~50%, calcium sulfite ratio: 50~60%, remaining sulfur dioxide concentration is 1500mg/m3.When
In the circulatory pool of the second level after the absorbability decline to a certain degree of slurries, the slurries in afterbody circulatory pool are supplemented into the
Secondary cycle pond, while the slurries in the circulatory pool of the second level add to first order circulatory pool.
Afterbody absorbing cabin cooperation afterbody circulatory pool is pulp pond as the link that makes a final check, this section of loop slurry
The fresh limestone slurries directly supplemented have very strong absorbability.PH in afterbody circulatory pool maintains to be greater than 5.8.
In the afterbody stage, absorption rate of sulfur dioxide is about 92%~95%, calcium carbonate proportion: 80~90%, calcium sulfite ratio: 10
~20%, remaining sulfur dioxide concentration is 150mg/m3, it is far below discharge standard.After operation after a period of time, last
Effective component in grade circulatory pool slurries is consumed, at this point, supplementing fresh slurry primary cycle pond to the end by pulp pond, simultaneously
Afterbody circulatory pool inputs loop slurry to second level circulatory pool, and the slurries in the circulatory pool of the second level add to first order circulation
Pond forms balance.
Claims (9)
1. a kind of desulphurization plant, including pulp pond (1), at least two-stage absorbing cabin (2), be connected to afterbody absorbing cabin (2)
Demisting storehouse (3), the air inlet pipe (4) connecting with first order absorbing cabin (2) are connected between adjacent two-stage absorbing cabin (2), and every level-one is inhaled
It receives storehouse (2) top and is equipped with spray equipment (5), it is characterised in that: corresponded in every level-one absorbing cabin (2) bottom and be equipped with circulation
Pond (6), it is mutually indepedent between each circulatory pool (6), desulfurizing agent is equipped in circulatory pool (6)；
Each circulatory pool (6) with its corresponding to absorbing cabin (2) in spray equipment (5) connect, the desulfurization in circulatory pool (6)
Agent can be admitted to spray equipment (5)；
Every level-one absorbing cabin (2) bottom with its corresponding to circulatory pool (6) between be equipped with the pipeline that is connected to the two, the pipeline
It is passed through the desulfurizing agent liquid level of circulatory pool (6) or less；
Oxidation air compartment system (7) are equipped in first order circulatory pool (6) corresponding to first order absorbing cabin (2).
2. desulphurization plant according to claim 1, it is characterised in that: be equipped on pulp pond (1) and each circulatory pool (6)
Liquid inlet and liquid outlet, each liquid inlet and liquid outlet are equipped with flow control valve.
3. desulphurization plant according to claim 2, it is characterised in that: the pulp pond (1) and afterbody circulatory pool (6)
It is connected by pipeline, the liquid outlet of pulp pond (1) is connect with the liquid-inlet of afterbody circulatory pool (6)；
Pipeline connection is passed sequentially through between each adjacent circulation pond (6), the liquid outlet and previous stage of rear stage circulatory pool (6) recycle
The liquid-inlet in pond (6) connects.
4. desulphurization plant according to claim 1, it is characterised in that: between air inlet pipe (4) and first order absorbing cabin (2)
Equipped with washing storehouse (8), the washing storehouse (8) is connected to first order absorbing cabin (2) and air inlet pipe (4) simultaneously, at washing storehouse (8) bottom
Portion is correspondingly provided with kitchen sink (9)；Spray equipment (5) are equipped on kitchen sink (9) top.
5. desulphurization plant according to claim 4, it is characterised in that: the air inlet pipe (4) and washing storehouse (8) lower end connect
It is logical, gas outlet (10) are provided in washing storehouse (8) upper end；
Air inlet (11) is provided in the lower end of every level-one absorbing cabin (2) and the diagonal upper end in lower end is provided with gas outlet (10)；
The gas outlet (10) for washing storehouse is connected to the air inlet (11) of first order absorbing cabin (2) by air guide channel (12)；
In adjacent two-stage absorbing cabin (2), the gas outlet (10) of previous stage absorbing cabin (2) and the air inlet of rear stage absorbing cabin (2)
(11) it is connected to by air guide channel (12)；
It is provided with air inlet (11) in the lower end of demisting storehouse (3), the gas outlet (10) and demisting storehouse (3) of afterbody absorbing cabin (2)
Air inlet (11) pass through air guide channel (12) be connected to.
6. desulphurization plant according to claim 4, it is characterised in that: the washing storehouse (8), absorbing cabin (2), demisting storehouse
(3), circulatory pool (6), kitchen sink (9), pulp pond (1) are to assemble the box-structure being spliced using corrosion resistance plate.
7. desulphurization plant according to claim 5, it is characterised in that: on the top of every level-one absorbing cabin (2), positioned at the suction
The top for receiving storehouse (2) interior spray equipment (5) is equipped with inclined plate (13), and the inclined plate (13) is highly no more than the outlet of absorbing cabin (2)
Mouth (10) height；
In inclined plate (13), two sides are equipped with apparatus for eliminating sludge (20) up and down.
8. desulphurization plant according to claim 1, it is characterised in that: the oxidation air compartment system (7) includes blower
(71), the ventilation duct (72) connecting with blower (71) is equipped with multiple air holes in the exit array of ventilation duct (72)；
First order circulatory pool (6) bottom be equipped with blender (14), the outlet of the ventilation duct (72) be set to desulfurizing agent liquid level with
Under, and the blade close to blender (14), the export direction of ventilation duct (72) are parallel with the action direction of blender (14)；
It is not provided with oxidation air compartment system (7) in other circulatory pools (6) in addition to first order circulatory pool (6), but is equipped with and stirs
Mix machine (14).
9. desulphurization plant according to claim 1, it is characterised in that: be equipped with chimney (15) at the top of the demisting storehouse (3), remove
Mist storehouse (3) bottom is correspondingly provided with reservoir (16), and the pipeline for being connected to the two is equipped between demisting storehouse (3) and reservoir (16).
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| CN201821181472.1U CN208642304U (en) | 2018-07-25 | 2018-07-25 | A kind of desulphurization plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821181472.1U CN208642304U (en) | 2018-07-25 | 2018-07-25 | A kind of desulphurization plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744943A (en) * | 2018-07-25 | 2018-11-06 | 湖南天翊环保科技有限公司 | A kind of desulphurization plant and its sulfur removal technology |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108744943A (en) * | 2018-07-25 | 2018-11-06 | 湖南天翊环保科技有限公司 | A kind of desulphurization plant and its sulfur removal technology |
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