CN110180328A - A kind of industrial waste gas purifying processing unit - Google Patents
A kind of industrial waste gas purifying processing unit Download PDFInfo
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- CN110180328A CN110180328A CN201910501286.4A CN201910501286A CN110180328A CN 110180328 A CN110180328 A CN 110180328A CN 201910501286 A CN201910501286 A CN 201910501286A CN 110180328 A CN110180328 A CN 110180328A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1468—Removing hydrogen sulfide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a kind of industrial waste gas purifying processing units, there is a longitudinal runner including interior inside reactor is axially disposed, hollow sandwich is provided in the tube wall of interior reactor, and hollow sandwich is divided into several independent annular cavities in the axial direction, at least runs through on the internal perisporium of each annular cavity upper end and opens up first spray apertures of circle；Fluidized bed；Outer reactor is coaxially set in the periphery of interior reactor, and annular gap is provided between interior reactor periphery and outer reactor inner circumferential, it is connected at the top of longitudinal runner with annular gap top, the helical baffle of downward precession is provided in annular gap to form the helical duct of downward precession, one spiral interlayer is set in helical baffle, the distribution of helical baffle bottom is provided with the second spray apertures, and the second spray apertures are connected to through helical baffle bottom and with spiral interlayer, and spiral interlayer is connected to external absorbing liquid.The present invention solves the technical problem of exhaust gas elimination reaction efficiency deficiency.
Description
Technical field
The present invention relates to desulphurization plant technical field, specially a kind of industrial waste gas purifying processing unit.
Background technique
Whether flue gas desulfurization technique type is added the dry and wet form of water and desulfurization product by sweetening process up to tens kinds at present,
Flue gas desulfurization is divided into: wet process, semidry method, dry method three categories sulfur removal technology.Wet Flue Gas Desulfurization Technique is more mature, high-efficient, operation
Simply.Traditional limestone/lime-gypsum method flue gas desulfurization technique generates after using calcium-based desulfurizing agent sulfur dioxide absorption
Calcium sulfite, calcium sulfate form fouling, clogging since its solubility is smaller easily in desulfurizing tower and in pipeline.Double alkali
Method flue gas desulfurization technique be in order to overcome lime stone-lime method be easy fouling the shortcomings that and grow up.
Our company mainly applies circulating fluid bed semi-drying method flue gas desulfurization technology, at present the working principle of the technology are as follows: boiler
Flue gas out first passes through pre-duster, is horizontally entered into tower by the air-distribution device of the bottom of desulfurizing tower, is folded to top and passes through
Venturi pipeline section accelerates air-flow, holds up " bed " in the absorbing reaction section of top.Niter buck is in the top of venturi pipeline section
It is added in absorbing reaction section, has been mixed into active good calcium hydroxide in flue gas at this time and accelerates absorbing reaction because of water spray, together
When be cooled to temperature close to dew point.During desulfurizing tower absorbing reaction section " bed " mixes turbulence, in flue gas
SO2, SO3, HCL, HF, etc. pernicious gases absorbed by calcium hydroxide, removed.
But the deficiency of current this technology is that the removal efficiency of harmful smoke is not high, and absorbing liquid utilization rate is not also high.
Summary of the invention
It is an object of the invention to solve at least the above problems, and provide the advantages of at least will be described later.
It is a still further object of the present invention to provide a kind of industrial waste gas purifying processing units, construct multiloop and multiple field
Desulfurization channel, extend delay reaction time of the exhaust gas in reactor, at the same optimize exhaust gas with absorbing liquid contact effect
Fruit to improve the reaction efficiency of exhaust gas and reaction solution, and improves the removal effect to exhaust gas, and the present invention solves useless
Qi exhaustion removes the technical problem of reaction efficiency deficiency.
In order to achieve the object of the present invention and further advantage, a kind of industrial waste gas purifying processing unit is provided, comprising:
Interior reactor is a longitudinally disposed round tube shape structure, and the interior inside reactor is axially disposed a longitudinal stream
Road is provided with hollow sandwich in the tube wall of the interior reactor, and the hollow sandwich is divided into several solely in the axial direction
Vertical annular cavity, at least through opening up first spray apertures of circle on each annular cavity upper end internal perisporium；It is described interior anti-
It answers the bottom end of device to offer refluxing opening, offers air inlet in the bottom sidewall of the interior reactor；
Fluidized bed is horizontally installed in longitudinal runner of every circle first spray apertures lower end, and outside the fluidized bed
It is all to be bonded with longitudinal runner inner circumferential；And
Outer reactor, is a tower-like cavity body structure, and the outer reactor is coaxially set in the periphery of the interior reactor, and institute
It states and is provided with annular gap between interior reactor periphery and the outer reactor inner circumferential, longitudinal direction runner top and the annular
It is connected at the top of gap, it is logical to form the spiral of downward precession that the helical baffle of downward precession is provided in the annular gap
Road, the helical duct bottom open up a gas outlet discharged outward, a spiral interlayer, the spiral shell are arranged in the helical baffle
Rotation baffle bottom distribution is provided with the second spray apertures, second spray apertures through the helical baffle bottom and with the spiral
Interlayer connection, the spiral interlayer are connected to external absorbing liquid, and a poly- sap cavity is arranged in every layer of helical baffle bottom, described poly-
Hydrops in sap cavity is pumped into the annular cavity of corresponding position after being pressurized.
Preferably, the interior reactor bottom is drawn downwards from the bottom of the outer reactor, the bottom of the interior reactor
Venturi tube is provided on portion's exit, the refluxing opening is connected to the lower end of the Venturi tube, the refluxing opening and waste liquid
Pond connection；The air inlet is arranged on the upper end cone side wall of the Venturi tube, and exhaust gas enters to institute by the air inlet
It states in longitudinal runner.
Preferably, there are several annular cavities by ring baffle spaced set in the hollow sandwich, it is described
First spray apertures are connected to the annular cavity of corresponding position, are run through on the periphery wall of each annular cavity and are opened up one
Pump intake, the pump intake and the annular cavity penetrate through；The outer diameter of each annular cavity is consistent, the annular cavity
Internal diameter gradually becomes smaller from lower to upper.
Preferably, the internal diameter of longitudinal runner gradually becomes smaller from lower to upper, and the fluidized bed is equidistantly arranged at intervals on
In the longitudinal direction runner；
The fluidized bed includes bedstead and the filler that is filled in the bedstead, and the absorbing liquid is covered by first spray apertures
Lid spray is in the filler upper end.
Preferably, it opens wide and is connected to the annular gap headspace, the helical baffle at the top of longitudinal runner
Periphery be bonded with the internal perisporium of the outer reactor, the periphery wall of the inner circumferential of the helical baffle and the interior reactor pastes
It closes, the longitudinal pitch of helical baffle described in upper layer and lower layer is consistent with longitudinal height of the annular cavity.
Preferably, a longitudinally disposed input duct on the lateral wall of the outer reactor, the lateral wall of the outer reactor
On at least through opening up a through-hole, the through-hole is connected to the spiral interlayer of the input duct and position, described
The entrance of input duct enters absorbing liquid by the first force (forcing) pump.
Preferably, every layer of poly- liquid baffle in the helical baffle bottom longitudinally disposed one, longitudinal height of the poly- liquid baffle
Less than longitudinal height of the annular cavity, the periphery of the poly- liquid baffle is bonded with the internal perisporium of the outer reactor, described
The inner circumferential of poly- liquid baffle is bonded with the periphery wall of the interior reactor, to form the poly- liquid in the helical baffle bottom
Chamber, the pump intake are located at the poly- sap cavity bottom position.
Preferably, one second force (forcing) pump, the entrance of second force (forcing) pump and the poly- sap cavity are set in the poly- sap cavity
Connection, the outlet of second force (forcing) pump is connected to the pump intake.
Preferably, one is arranged on the side wall of the poly- liquid baffle for measuring the liquid level of liquid level in the poly- sap cavity
Meter, the liquidometer are located in the poly- sap cavity.
Preferably, the gas outlet connects a bag filter.
Beneficial effects of the present invention are as follows:
1, reactor in present invention setting one, carries out the elimination reaction of first time exhaust gas, and in the interior reactor in interior reactor
Interior longitudinal gap is provided with multiple fluidized beds, optimizes the haptoreaction effect of exhaust gas and absorbing liquid, and the shape in longitudinal runner
At multiple inner cyclic process, reaction mass transfer process is further improved, improves the removal efficiency to exhaust gas；
2, it is provided with helical duct between interior reactor and outer reactor, and is provided with spray equipment in helical duct, passes through
It crosses the gas after interior reactor absorbs to enter in helical duct, the spray reaction in helical duct Jing Guo absorbing liquid, into one
Step absorbs the harmful components in gas, improves the removal efficiency to exhaust gas, and helical duct effectively increases the stroke of exhaust gas, thus
Further improve the removal efficiency to exhaust gas；
3, the absorbing liquid of the aggregation of every layer of helical baffle bottom is pumped on the corresponding fluidized bed of position, is carried out to suction
The cycling and reutilization for receiving liquid, reduces the usage amount of absorbing liquid, to improve to absorbing liquid service efficiency；
4, the absorbing liquid concentration of the aggregation of every layer of helical baffle bottom is different, and specifically absorbing liquid concentration successively increases from top to bottom
Add, so that the double absorption liquid of various concentration is pumped on the fluidized bed in interior reactor as primary first-order equation absorption process
Stoste, and the spray concentration of absorbing liquid is to gradually increase, and the concentration of exhaust gas is from lower past from top to bottom in interior reactor
On gradually decrease, the absorbing liquid haptoreaction of the exhaust gas of high concentration and high concentration in interior reactor, and as exhaust gas is dense
The concentration of the reduction absorbing liquid of degree also accordingly reduces, and the usage amount of absorbing liquid is reduced under the premise of guaranteeing reaction efficiency, is filled
Divide the drug effect using absorbing liquid, that is, optimize the contact process of absorbing liquid and exhaust gas by the adjustment of control strategy, improves
To the assimilation effect of exhaust gas, and reduce the usage amount of absorbing liquid.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the side view of purification system of the present invention；
Fig. 2 is the structural schematic diagram of reactor in the present invention；
Fig. 3 is the mounting structure schematic diagram of fluidized bed of the present invention；
Fig. 4 is the structural schematic diagram of annular cavity in Fig. 1；
Fig. 5 is the structural schematic diagram of spray system in helical duct of the present invention.
In figure: 1, outer reactor；2, interior reactor；3, input duct；4, helical baffle；5, helical duct；6, second adds
Press pump；7, gas outlet；8, refluxing opening；9, poly- liquid baffle；10, liquidometer；11, air inlet；12, through-hole；21, internal perisporium；22, outer
Peripheral wall；23, air inlet；24, the conical surface；25, pump intake；26, the first spray apertures；27, top plate；28, ring baffle；29, venturi
Pipe；201, bedstead；202, filler；203, annular cavity；204, longitudinal runner；41, spiral interlayer；42, nozzle；43, mounting hole.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Fig. 1-5 is please referred to, the present invention provides a kind of industrial waste gas purifying processing unit, including interior reactor 2 and outer reaction
Device 1.As in Figure 2-4, interior reactor 2 is a longitudinally disposed round tube shape structure, and the interior reactor 2 is axially inside arranged
There is a longitudinal runner 204, exhaust gas enters in interior reactor 2 from the bottom of longitudinal runner 204, after flowing through longitudinal runner 204, from vertical
It is flowed out to the top of runner 204.
In the technical program, it is provided with hollow sandwich in the tube wall of the interior reactor 2, is used for liquid storage, hollow sandwich
It is closed with top plate 27 at top.And the hollow sandwich is divided into several independent annular cavities 203, Mei Gesuo in the axial direction
It states at least to run through on annular 203 upper end internal perisporium 21 of cavity and opens up first spray apertures of circle 26.Specifically, in the hollow sandwich
In by several 28 spaced sets of ring baffle have several annular cavities 203, first spray apertures 26 with it is right
The annular cavity 203 at position is answered to be connected to, the absorbing liquid in the annular cavity 203 passes through the pressurization spray of the first spray apertures 26
Out, through opening up a pump intake 25 while on the periphery wall 22 of each annular cavity 203, the pump intake 25 with it is described
Annular cavity 203 penetrates through, and the absorbing liquid in outside is pumped into annular cavity 203 by pump intake 25, then by upper end position
The first spray apertures 26 uniformly sprayed into longitudinal runner 204.
Fluidized bed is horizontally installed in longitudinal runner 204 of every circle 26 lower end of the first spray apertures, the fluidisation
Bed includes bedstead 201 and the filler 202 being filled in the bedstead 201, and the fluidized bed periphery and longitudinal runner 204
Inner circumferential fitting, avoids from side wall gas leakage.The absorbing liquid is by first spray apertures 26 covering spray on the filler 202
End, provides reaction bed for the reaction process of absorbing liquid and exhaust gas, and absorbing liquid and exhaust gas come into full contact with reaction in a fluidized bed, improves
To the removal effect of exhaust gas.And multiple fluidized beds are sequentially arranged at intervals in longitudinal runner 204, optimize exhaust gas and absorbing liquid
Haptoreaction effect, and form multiple inner cyclic process in longitudinal runner, further improve reaction mass transfer process, improve
To the removal efficiency of exhaust gas.
With the uphill process of gas, the upper and lower ends in longitudinal runner can generate certain differential pressure of atmospheric pressure, cause gas
The suspending power that body is provided to top filler 202 is insufficient, prevent top filler 202 influences gas and fill out at top from all suspending
Haptoreaction effect in material 202 with absorbing liquid.
For this purpose, special designing is done to the internal diameter of longitudinal runner 204 in the present invention, specifically, by each annular cavity
203 outer diameter is designed to unanimously, that is, interior reactor is coaxially disposed at outer reactor axis center, and by each annular
The internal diameter of cavity 203 gradually becomes smaller from lower to upper, and the internal diameter of each annular cavity 203 is also to gradually become smaller from lower to upper,
So that the internal diameter of longitudinal runner gradually becomes smaller to form a conical surface from lower to upper, each fluidized bed is equidistantly arranged at intervals on
In the longitudinal direction runner.
As longitudinal runner internal diameter gradually becomes smaller from lower to upper, the flow on cross section increases, and air pressure becomes larger, to offset just
The effect that air pressure is gradually reduced from lower to upper in longitudinal runner under normal state, so that top filler 202 also can all suspend, thus
Ensured gas in top filler 202 with the haptoreaction effect of absorbing liquid.
Exhaust gas enters in longitudinal runner 204 after accelerating from longitudinal 204 bottom of runner, sequentially enters Multi-path circulation fluidized bed
Bed body, for exhaust gas in recirculating fluidized bed, absorbing liquid and exhaust gas generate fierce turbulence and mixing, sufficiently due to the effect of air-flow
Contact, in uphill process, constantly formed floccule return downwards, and floccule in fierce turbulence constantly disintegration again by
Gas lift, so that harmful substance, such as sulfur dioxide, sulfur trioxide, hydrogen chloride gas etc. in exhaust gas in reaction bed, with
Absorbing liquid is sufficiently reacted, and the mass transfer in reaction process and heat transfer are greatly enhanced, and is improved and is imitated to the removal efficiency of exhaust gas and removing
Rate.
As shown in Figure 1, outer reactor 1 is a tower-like cavity body structure, the outer reactor 1 is coaxially set in the interior reaction
The periphery of device 2, and annular gap is provided between 2 periphery of interior reactor and 1 inner circumferential of outer reactor, longitudinal stream
It is connected at the top of 204 top of road and the annular gap, the gas after interior 2 reactive absorption of reactor is directed into annular gap
Top carries out secondary elimination reaction.
The helical baffle 4 of downward precession is provided in the annular gap to form the helical duct 5 of downward precession, warp
Gas after crossing interior 2 reactive absorption of reactor imports at the top of helical duct 5, and after helical duct 5, from bottom to outlet
Out, secondary elimination reaction is passed through in helical duct 5.
Specifically, 5 bottom of helical duct opens up a gas outlet 7 discharged outward, by the gas of secondary elimination reaction
Body can direct out discharge by gas outlet 7.As shown in figure 5, a spiral interlayer 41 is arranged in the helical baffle 4, it is used for
Liquid storage, 4 bottom of helical baffle, which is distributed, is provided with the second spray apertures, and in the present embodiment, 4 bottom of helical baffle is provided with nozzle
42 are used as the second spray apertures, and nozzle 42 is tiltedly mounted on 4 bottom of helical baffle by mounting hole 43, and the nozzle 42 is through described
4 bottom of helical baffle is simultaneously connected to the spiral interlayer 41, and the spiral interlayer 41 is connected to external absorbing liquid, spiral interlayer 41
In absorbing liquid sprayed downwards by nozzle 42, sprayed to 5 gas of helical duct is flowed through, so that in absorbing liquid and exhaust gas
Harmful substance carries out double absorption reaction, improves removal efficiency and removal effect to exhaust gas.
In the present embodiment, nozzle 42 is installed vertically on 4 bottom surface of helical baffle, so that the spray direction of nozzle 42 and flowing through spiral shell
The gas direction for revolving channel 5 is vertical, to improve the spraying effect with gas.
A longitudinally disposed input duct 3 on the lateral wall of the outer reactor 1 is passed through on the lateral wall of the outer reactor 1
It wears and offers multiple through-holes 12, the through-hole 12 is connected to 41 side of spiral interlayer of the input duct 3 and position
Face, the feed liquor modes of multiple through-holes 12 can pressure in the absorbing liquid in balanced spiral interlayer 41, optimize spraying effect.It is described into
The entrance in liquid pipe road 3 enters absorbing liquid by the first force (forcing) pump, so that absorbing liquid is pumped into spiral interlayer 41, and by spiral
Absorbing liquid in interlayer 41 is sprayed to downwards in helical duct 5 by nozzle 42, and exhaust gas and absorbing liquid carry out in helical duct 5
Double absorption reaction further absorbs the harmful components in gas, improves the removal efficiency to exhaust gas, and helical duct effectively increases
The stroke of exhaust gas, to further improve the removal efficiency to exhaust gas.
In above-mentioned technical proposal, opens wide at the top of the longitudinal direction runner 204 and be connected to the annular gap headspace, from
And interior reactor 2 is connected to outer reactor 1, the internal perisporium of the periphery of the helical baffle 4 and the outer reactor 1 pastes
It closes, the inner circumferential of the helical baffle 4 is bonded with the periphery wall of the interior reactor 2, avoids gas leakage, the gear of spiral described in upper layer and lower layer
The longitudinal pitch of plate 4 is consistent with longitudinal height of the annular cavity 203, so that every layer of helical duct 5 and each annular
Cavity 203 corresponds.
2 bottom of interior reactor is drawn downwards from the bottom of the outer reactor 1, and the bottom end of the interior reactor 2 is opened
Equipped with refluxing opening 8, air inlet 11 is offered in the bottom sidewall of the interior reactor 2；Specifically, the bottom of the interior reactor 2
Venturi tube 29 is provided on portion's exit, the refluxing opening 8 is connected to the lower end of the Venturi tube 29, the refluxing opening 8
It is connected to waste liquid pool；The air inlet 11 is arranged on 24 side wall of upper end cone face of the Venturi tube 29, and exhaust gas passes through described
Air inlet 11 enters in longitudinal runner 204, successively into excessively longitudinal 204 absorbing reactions of runner and helical duct 5 two
After secondary absorbing reaction, to be discharged outward from the gas outlet 7 of 5 bottom of helical duct, the gas outlet 7 connects a bag filter, into
Row dedusting.
In above-mentioned technical proposal, a poly- sap cavity, the hydrops quilt in the poly- sap cavity is arranged in every layer of 4 bottom of helical baffle
It is pumped into after pressurization in the annular cavity 203 of corresponding position.Specifically, every layer of 4 bottom of helical baffle is longitudinally disposed
One poly- liquid baffle 9, longitudinal height of the poly- liquid baffle 9 is less than longitudinal height of the annular cavity 203, so that poly- liquid baffle
There are channel, gas can be flowed from the channel to next layer of helical duct 5 for upper end, the periphery of the poly- liquid baffle 9 with
The internal perisporium of the outer reactor 1 is bonded, and the inner circumferential of the poly- liquid baffle 9 is bonded with the periphery wall of the interior reactor 2, avoids
Hydrops is penetrated into next layer of helical duct 5, to form the poly- sap cavity in 4 bottom of helical baffle, this layer of spiral is logical
The absorbing liquid sprayed out in road 5 is collected in the poly- sap cavity of this layer of bottom, and the pump intake 25 is located at the poly- sap cavity bottom
Portion position.
One second force (forcing) pump 6 is set in the poly- sap cavity, the entrance of second force (forcing) pump 6 is connected to the poly- sap cavity,
The outlet of second force (forcing) pump 6 is connected to the pump intake 25, by the second force (forcing) pump 6 by the absorbing liquid hydrops in poly- sap cavity
Pressurization is pumped into the annular cavity 203 of corresponding position, then is sprayed to the stream in longitudinal runner 204 by the first spray apertures 26
Change in bed, to improve the reaction efficiency during an absorbing reaction.
In double absorption reaction process, with gas downward precession in helical duct 5, by every layer of helical duct 5
Spray reacts, and the sulfide pernicious gas in gas is gradually cleaned absorption, and accumulates in the reaction of 5 bottom of every layer of helical duct
Liquid concentration gradually increases, at this point, the absorbing liquid hydrops pressurization in every strata sap cavity is pumped into corresponding position by the second force (forcing) pump 6
It sets in the annular cavity 203 at place, carries out an absorbing reaction, be formed in the absorbing liquid concentration sprayed in longitudinal runner 204 by upper
Gradually be incremented by down, and in longitudinal runner 204, harmful gas concentration bottom right be up it is incremental, in the present invention, that is, logical
The variation of spray concentration strategy is crossed, so that the absorbing liquid of high concentration and the pernicious gas of high concentration are anti-during primary spray
It should absorb, with the rising of gas, relatively low intensity of absorbing liquid and relatively low intensity of pernicious gas reactive absorption, to mention
High-selenium corn reaction efficiency does not cause the waste of absorbing liquid, the absorption to pernicious gas will not be influenced, not only to secondary spraying
Absorbing liquid afterwards has carried out effective recycling, while improving the comprehensive utilization ratio of absorbing liquid, reduces costs.
It is high for measuring liquid level in the poly- sap cavity that one is arranged in above-mentioned technical proposal, on the side wall of the poly- liquid baffle 9
The liquidometer 10 of degree, the liquidometer 10 are located in the poly- sap cavity, and liquid level in poly- sap cavity is monitored by liquidometer 10,
It avoids the hydrops in poly- sap cavity excessive or very few, the first force (forcing) pump and the second pressurization is controlled by the monitoring data of liquidometer 10
Pump 6 is pumped into speed.Finally make the absorbing liquid spray volume and yield in an absorbing reaction and double absorption reaction process
Reach dynamic equilibrium.
From the above mentioned, evolutionary system of the invention constructs the desulfurization channel of multiloop and multiple field, extends exhaust gas and exists
Delay reaction time in reactor, while optimizing contact effect of the exhaust gas with absorbing liquid, thus improve exhaust gas with react
The reaction efficiency of liquid, and the removal effect to exhaust gas is improved, specifically, the reactor 2 in present invention setting one, inside instead
It answers and carries out the elimination reaction of first time exhaust gas in device 2, and longitudinal gap is provided with multiple fluidized beds in the interior reactor 2, optimization
The haptoreaction effect of exhaust gas and absorbing liquid, and in longitudinal runner 204 multiple inner cyclic process are formed, it further improves
Reaction mass transfer process improves the removal efficiency to exhaust gas.
Meanwhile helical duct 5 is provided between interior reactor 2 and outer reactor 1, and be provided in helical duct 5
Spray equipment, the gas after the absorption of interior reactor 2 enters in helical duct 5, by absorbing liquid in helical duct 5
Spray reaction further absorbs the harmful components in gas, improves the removal efficiency to exhaust gas, and helical duct 5 effectively increases
The stroke of exhaust gas, to further improve the removal efficiency to exhaust gas.And by the absorption of the aggregation of every layer of 4 bottom of helical baffle
Liquid is pumped on the corresponding fluidized bed of position, carries out the cycling and reutilization to absorbing liquid, reduces the usage amount of absorbing liquid,
To improve to absorbing liquid service efficiency；The absorbing liquid concentration of the aggregation of every layer of 4 bottom of helical baffle is different, specifically from upper past
Lower absorbing liquid concentration successively increases, so that the double absorption liquid of various concentration is pumped on the fluidized bed in interior reactor 2
As the stoste of primary first-order equation absorption process, and in interior reactor 2, the spray concentration of absorbing liquid gradually increases from top to bottom
, and the concentration of exhaust gas gradually decreases from the bottom up, the exhaust gas of high concentration and the absorbing liquid of high concentration in interior reactor 2
Haptoreaction, and as the concentration of the reduction absorbing liquid of exhaust gas concentration also accordingly reduces, it is dropped under the premise of guaranteeing reaction efficiency
The low usage amount of absorbing liquid, makes full use of the drug effect of absorbing liquid, that is, optimize absorbing liquid by the adjustment of control strategy
With the contact process of exhaust gas, the assimilation effect to exhaust gas is improved, and reduces the usage amount of absorbing liquid.
Although being disclosed for illustrative purpose the preferred embodiment of the present invention, those skilled in the art
Member will recognize that: without departing from the scope and spirit of the present invention as disclosed in appended claims, be able to carry out
Various modifications, addition and replacement.
Claims (10)
1. a kind of industrial waste gas purifying processing unit characterized by comprising
Interior reactor is a longitudinally disposed round tube shape structure, and the interior inside reactor is axially disposed a longitudinal stream
Road is provided with hollow sandwich in the tube wall of the interior reactor, and the hollow sandwich is divided into several solely in the axial direction
Vertical annular cavity, at least through opening up first spray apertures of circle on each annular cavity upper end internal perisporium；It is described interior anti-
It answers the bottom end of device to offer refluxing opening, offers air inlet in the bottom sidewall of the interior reactor；
Fluidized bed is horizontally installed in longitudinal runner of every circle first spray apertures lower end, and outside the fluidized bed
It is all to be bonded with longitudinal runner inner circumferential；And
Outer reactor, is a tower-like cavity body structure, and the outer reactor is coaxially set in the periphery of the interior reactor, and institute
It states and is provided with annular gap between interior reactor periphery and the outer reactor inner circumferential, longitudinal direction runner top and the annular
It is connected at the top of gap, it is logical to form the spiral of downward precession that the helical baffle of downward precession is provided in the annular gap
Road, the helical duct bottom open up a gas outlet discharged outward, a spiral interlayer, the spiral shell are arranged in the helical baffle
Rotation baffle bottom distribution is provided with the second spray apertures, second spray apertures through the helical baffle bottom and with the spiral
Interlayer connection, the spiral interlayer are connected to external absorbing liquid, and a poly- sap cavity is arranged in every layer of helical baffle bottom, described poly-
Hydrops in sap cavity is pumped into the annular cavity of corresponding position after being pressurized.
2. industrial waste gas purifying processing unit as described in claim 1, which is characterized in that the interior reactor bottom is from described
The bottom of outer reactor is drawn downwards, and Venturi tube is provided on the bottom exit of the interior reactor, and the refluxing opening connects
It connects in the lower end of the Venturi tube, the refluxing opening is connected to waste liquid pool；The Venturi tube is arranged in the air inlet
On upper end cone side wall, exhaust gas is entered in longitudinal runner by the air inlet.
3. industrial waste gas purifying processing unit as claimed in claim 2, which is characterized in that pass through annular in the hollow sandwich
Baffle spaced set has several annular cavities, the annular cavity company of first spray apertures and corresponding position
Logical, through a pump intake is opened up on the periphery wall of each annular cavity, the pump intake and the annular cavity are penetrated through；Respectively
The outer diameter of a annular cavity is consistent, and the internal diameter of the annular cavity gradually becomes smaller from lower to upper.
4. industrial waste gas purifying processing unit as claimed in claim 3, which is characterized in that the internal diameter of the longitudinal direction runner is under
It up gradually becomes smaller, the fluidized bed is equidistantly arranged at intervals in longitudinal runner；
The fluidized bed includes bedstead and the filler that is filled in the bedstead, and the absorbing liquid is covered by first spray apertures
Lid spray is in the filler upper end.
5. industrial waste gas purifying processing unit as claimed in claim 4, which is characterized in that opened wide simultaneously at the top of the longitudinal direction runner
It is connected to the annular gap headspace, the periphery of the helical baffle is bonded with the internal perisporium of the outer reactor, described
The inner circumferential of helical baffle is bonded with the periphery wall of the interior reactor, the longitudinal pitch of helical baffle described in upper layer and lower layer with it is described
Longitudinal height of annular cavity is consistent.
6. industrial waste gas purifying processing unit as claimed in claim 5, which is characterized in that on the lateral wall of the outer reactor
A longitudinally disposed input duct, at least through opening up a through-hole on the lateral wall of the outer reactor, described in the through-hole connection
The spiral interlayer of input duct and position, the entrance of the input duct enter absorption by the first force (forcing) pump
Liquid.
7. industrial waste gas purifying processing unit as claimed in claim 6, which is characterized in that every layer of helical baffle bottom is vertical
To one poly- liquid baffle of setting, longitudinal height of the poly- liquid baffle is less than longitudinal height of the annular cavity, the poly- liquid gear
The periphery of plate is bonded with the internal perisporium of the outer reactor, and the inner circumferential of the poly- liquid baffle and the periphery wall of the interior reactor paste
It closes, to form the poly- sap cavity in the helical baffle bottom, the pump intake is located at the poly- sap cavity bottom position.
8. industrial waste gas purifying processing unit as claimed in claim 7, which is characterized in that one second is arranged in the poly- sap cavity
Force (forcing) pump, the entrance of second force (forcing) pump are connected to the poly- sap cavity, the outlet of second force (forcing) pump and the pump intake
Connection.
9. industrial waste gas purifying processing unit as claimed in claim 8, which is characterized in that set on the side wall of the poly- liquid baffle
One is set for measuring the liquidometer of liquid level in the poly- sap cavity, the liquidometer is located in the poly- sap cavity.
10. industrial waste gas purifying processing unit as claimed in claim 9, which is characterized in that the gas outlet connects a cloth bag
Deduster.
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Cited By (1)
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|---|---|---|---|---|
| CN112957906A (en) * | 2021-03-04 | 2021-06-15 | 北京实力伟业环保科技有限公司 | Waste gas biological purification system |
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| CN110180328B (en) | 2023-09-26 |
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