CN205886581U - Adopt formula torrent scrubbing tower exhaust treatment device that hedges against current - Google Patents
Adopt formula torrent scrubbing tower exhaust treatment device that hedges against current Download PDFInfo
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- CN205886581U CN205886581U CN201620910544.6U CN201620910544U CN205886581U CN 205886581 U CN205886581 U CN 205886581U CN 201620910544 U CN201620910544 U CN 201620910544U CN 205886581 U CN205886581 U CN 205886581U
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Abstract
The utility model provides an adopt formula torrent scrubbing tower exhaust treatment device that hedges against current, including heat exchanger, countercurrent washing tower, demister, saturated liquid outer discharge pipe, absorption liquid circulating slot, circulating pump, the countercurrent washing tower be equipped with the contrary wash tube that spouts, the heat exchanger is connected to contrary one end of spouting wash tube, the other end shen ru arrives the bottom of countercurrent washing tower, contrary spouting be equipped with the contrary structure of spouting in the wash tube, the contrary structure of spouting is passed through the circulating pump and is linked to each other with absorption liquid circulating slot pipeline. The device can adopt different absorption liquids according to the waste gas nature of difference in a flexible way, has the efficiency of high -efficient desorption waste gas, dust, satisfies SO2 <= 100mgm3's new environmental protection requirement.
Description
Technical field
The present invention relates to waste gas environment protection treatment field, mark transformation including carrying of the industry waste gas such as petrochemical industry, electric power, more particularly, to
Sulphur unit so2A kind of adverse current opposite-flushing type its device of turbulence washing tower exhaust-gas treatment that tail gas qualified discharge is processed.
Background technology
So in air2Sulfuric acid mist and sulphuric acid rain can be formed, humidity high, temperature is low and is easily formed in the presence of having particulate matter
Sulfuric acid mist, makes haze weather increase and health is worked the mischief.In this regard, country puts into effect many policies and regulation to control
so2Discharge capacity.As specified standard limit of smog release so in GB gb16297～19962≤960mg/m3, nowadays in the face of increasingly tight
High environment situation, gb31570～2015 " petroleum refining industry pollutant emission standard " is it is desirable to current enterprise July 1 in 2017
Day plays execution: standard limit of smog release so of sour gas retracting device2≤400mg/m3, and for special regional requirements so2≤
100mg/m3, and some places environmental regulation more strict it is desirable to waste gas emission standard so of sulphur unit2≤50mg/m3, but
So of sulfur recovery facility waste gas at present2Concentration of emission, still can not reach so2≤400mg/m3.
Flue gas desulfurization both at home and abroad is divided into dry desulfurization and wet desulphurization at present, dry method adopt powdery or granular absorbent or
Catalyst, and wet method adopts the absorbing liquid such as water, alkaline solution, removes so containing in removing exhaust gas2Deng impurity.Wet desulphurization at present
Most widely used, mainly it is fully contacted using gas and liquid, increases the collision probability of absorbing liquid and pollutant, improve the de- of equipment
Sulphur efficiency.Common wet desulphurization device has: spray scrubber, liquid column tower, Venturi scrubber, board-like (filler) tower etc..Its
In board-like (filler) tower be made up of materials such as column plate, filler, distributors, compared with other scrubbing towers, filler easily blocks, if
Standby investment is larger, does not have economy.
Spray scrubber is a kind of ancient wet desulphurization equipment, and the principal element of impact spray efficiency is droplet distribution
The uniformity, size droplet diameter, particle diameter distribution.Under the conditions of identical spray, atomization droplets diameter its specific surface area bigger is less, fall
Low desulfuration efficiency, but size droplet diameter is too little, is easily vaporized or is entrained by the flow of air, and directly affects desulfuration efficiency.
Liquid column tower is development on the basis of spray column, and the maximum difference with spray column is that liquid column tower uses jet
Nozzle, and spray column adopts atomizer, because the absorbing liquid in liquid column tower is in fluid column shape, scattered size droplet diameter is relatively
Greatly although the load of demister can be substantially reduced, but the specific surface area of liquid phase reduces, and affects desulfuration efficiency.
Venturi scrubber uses kinetic energy to form the single fluid nozzle of drop, and flue gas, after admission line is out, enters
Enter Venturi scrubber and the flue gas contact fierce with liquid occurs, thus removing the impurity such as dust, oxysulfide, but when flue gas is dirty
When dye thing occurs fluctuation, Venturi scrubbing flow quantity does not possess emergent adjustability, and complex structure, operating cost are also higher simultaneously.
As disclosed in 2016 patent cn105498513 a report " a kind of Two-way Cycle washing wet flue gas high-efficiency desulfurization and
High-effective dust-removing integrated apparatus ", it is characterized in that a spray absorber, bottom of towe is provided with smoke inlet, and top sets out mouth, using double
Circulation washing joint flue gas commutator and demister, carry out calcium base wet-process flue gas desulfurization dedusting technology.This technique substantially belongs to
A kind of improvement of spray scrubber, it is too little not solve size droplet diameter, is easily vaporized or is entrained by the flow of air, and sprays internal junction
Structure is more complicated, has no the emergency processing facility of tail gas fluctuation.
Patent cn104941403 a report a kind of " method processing Crouse's sulfur process tail gas as disclosed in 2015
And device ", that is, on two-stage Crouse's sulfur technique～vent gas treatment basis, remove the tail gas hydrogenation reduction of vent gas treatment workshop section
～absorb operation, rich in so2Tail gas enters transducer after drying and generates so3High-concentration sulfuric acid is generated after being absorbed.This technique
Only it is suitable for and be rich in high concentration so2Tail gas, so of inapplicable low concentration2Tail gas, and new environmental requirement so cannot be met2≤
100mg/m3.
Patent cn104437046 a report " catalytic cracking flue gas desulfurization and dust collecting process and its dress as disclosed in 2015
Put ", that is, catalytic cracking flue gas sequentially pass through flue gas ash removal and first desulfurization, flue gas desulfurization and flue gas degassing sol three road technique mistake
Catalytic cracking flue gas are carried out purification and washing by power wave apparatus by journey, and flue gas is removed by spray washing and machinery on absorption tower
Mist, realizes wet desulphurization and dehumidifying, and finally excessively electric defogging method, traps droplet by electrion, make the dustiness in flue gas
≤30mg/nm3, reach standard limit of smog release.This technological process is complicated, equipment is various, high energy consumption, is difficult spread.
Patent cn105498513 a report " a kind of reduction sulfur recovery facility sulfur dioxide (SO2) emissions as disclosed in 2015
The system of concentration, method and desulfurizing agent ", it is characterized in that main using being a kind of wet method liquid phase oxidation reduction and desulfurization hydrogen process.
As disclosed in 2015, patent cn104258700 a reports a kind of circulating fluid bed boiler desulfurization denitrating system, and this invention is passed through
Increasingly strict environmental protection standard is met using the ammonia process of desulfurization and sncr denitrating technique, realizes SO 2 from fume and nitrogen oxides
Qualified discharge.
Or obviously disclosed above-mentioned desulfurization technology has that desulfuration efficiency is relatively low, equipment is huge, technological process is numerous and diverse, or
There is filler and nozzle easily block, investment cost high.Therefore, find new desulfurizing tower washing technology, new to meet
Environmental requirement so2≤100mg/m3Just seem particularly necessary and important.
Utility model content
For the deficiencies in the prior art, the present invention provides one kind to adopt adverse current opposite-flushing type turbulence washing tower exhaust device, should
Device flexibly can adopt different absorbing liquids according to different exhaust gas properties, has functions that efficient removal waste gas, dust, meets
so2≤100mg/m3New environmental requirement.
For realizing goal of the invention, the present invention takes following technological means:
One kind adopts adverse current opposite-flushing type turbulence washing tower emission-control equipment, including heat exchanger, countercurrent washing tower, foam removal
The outer comb of device, saturated solution, absorbing liquid circulating slot, circulating pump, described countercurrent washing tower is provided with inverse spray rinsing pipe, inverse spray rinsing pipe
One end connect heat exchanger, the other end is deep into the bottom of countercurrent washing tower, be provided with described inverse spray rinsing pipe inverse spray structure,
Inverse spray structure is connected with absorbing liquid circulating slot pipeline by circulating pump, and described demister is arranged on the top of countercurrent washing tower,
Demister is connected with heat exchanger by pipeline, and the outer comb of described saturated solution is arranged on countercurrent washing tower bottom, described adverse current
Scrubbing tower is connected by pipeline with absorbing liquid circulating slot.
Preferably, described inverse spray rinsing pipe has the inverse spray structure of one-level, two grades and three-level.
Preferably, the inverse spray structure of described one-level, two grades or three-level carries out pipeline with corresponding respective circulating pump
Connect, respective circulating pump carries out pipeline with absorbing liquid circulating slot again and is connected.
Preferably, the nozzle being provided with 3 1-20 centimetre of bores in every grade of inverse spray structure, each nozzle angle interval
120 °, big mouth nozzle makes the solid content of circulating absorption solution reach 10%～20% to be circulated, do not block, scale formation.
Preferably, the bottom of described inverse spray rinsing pipe is provided with tube having holes, the tube wall aperture of described tube having holes is 1-
20 millimeters, this is the natural gravity using inverse spray absorbing liquid, designs the tube wall aperture of 1-20 millimeter in inverse spray rinsing bottom of the tube
Tube having holes, form bubble cleaning area, play and multistage repeatedly remove the impurity such as removing exhaust gas, dust.
This device with regard to processing the workflow of waste gas is:
(1) waste gas through heat exchanger, enters the inverse spray rinsing pipe of countercurrent washing tower, inverse with the one-level of jet flow upwards spray, two
The inverse spray of level or the inverse spray of three-level absorb fluid circulation and contact and obtain blend absorbent, form gas-liquid turbulent flow foamed cleaning area；
(2) following current enters countercurrent washing tower bottom to blend absorbent again, enters the bubbling that tube having holes form gas-liquid or liquid liquid
Scrubbing section；
(3) waste gas behind bubble cleaning area is through demister, then through heat exchanger exit, the waste gas row after purifying
Go out.
The beneficial effects of the utility model are embodied in:
(1) liquidated using gas-liquid, increase the contact specific surface area with absorbing liquid for the waste gas, form turbulent flow foamed cleaning area, wound
New inverse spray of design three-level absorbs fluid circulation, and nominal situation enables one-level or two grades of inverse spray circulations, exhaust pulses operating mode three-level
Inverse spray starts simultaneously；
(2) utilize the natural gravity of inverse spray absorbing liquid, in the pipe tap of inverse spray rinsing bottom of the tube innovative design 1-20 millimeter
Footpath, forms bubble cleaning area；
(3) inside turbulence washing tower, the nozzle of every grade of inverse spray 3 1-20 centimetre of bores of innovative design, each nozzle angle
120 ° of interval, big mouth nozzle makes the solid content of circulating absorption solution reach 10%～20% to be circulated, do not block, fouling is existing
As；
(4) this turbulence washing tower is compared with traditional spray column, packed tower etc., has that structure is simple, mass-transfer efficiency is high, accounts for
Ground area is little；
(5) this turbulence washing tower device, because gas-liquid is sufficiently mixed contact, has chilling cooling, applied widely, absorption
Efficiency high, reaches more than 95% to the clearance of the impurity such as waste gas, dust；
(6) can be according to the different composition and properties of waste gas, this turbulence washing tower device can be selected for different absorbing liquids and goes to wash
Wash, efficiently solve a difficult problem for waste gas qualified discharge, reach pollution administration, improve environment, energy saving, reduces cost, realize
Economic benefit and environmental benefit bumper harvests.
Brief description
Fig. 1 is that this utility model shows with regard to the structure of the device using adverse current opposite-flushing type turbulence washing tower waste gas treatment process
It is intended to.
Specific embodiment
With reference to embodiment, the present invention is described further.
Embodiment 1
One kind as described in Figure 1 adopts adverse current opposite-flushing type turbulence washing tower emission-control equipment, including heat exchanger 1, countercurrently
The outer comb 4 of scrubbing tower 2, demister 3, saturated solution, absorbing liquid circulating slot 5, circulating pump, described countercurrent washing tower is provided with inverse hydro-peening
Wash pipe 6, one end of inverse spray rinsing pipe connects heat exchanger, the other end is deep into the bottom of countercurrent washing tower, described inverse spray rinsing
It is provided with inverse spray structure, inverse spray structure is connected with absorbing liquid circulating slot pipeline by circulating pump, and described demister is arranged in pipe
The top of countercurrent washing tower, demister is connected with heat exchanger by pipeline, and the outer comb of described saturated solution is arranged on countercurrent washing
Tower bottom, described countercurrent washing tower is connected by pipeline with absorbing liquid circulating slot.
Described inverse spray rinsing pipe has the inverse spray structure 63 of 61, two grades of inverse spray structures 62 of one-level inverse spray structure and three-level；Institute
61, two grades of inverse spray structures 62 of the one-level stated inverse spray structure and three-level inverse spray structure 63 respectively with primary cycle pump 71, secondary cycle
Pump 72 and three-level circulating pump 73 carry out pipeline connection, and respective circulating pump carries out pipeline with absorbing liquid circulating slot 5 again and is connected；Every grade
The nozzle 8 being provided with 3 1-20 centimetre of bores in inverse spray structure, each nozzle angle is spaced 120 °；Described inverse spray rinsing pipe
Bottom be provided with tube having holes 9, the tube wall aperture of described tube having holes is 1-20 millimeter.
Flow process using said apparatus process waste gas:
(1) waste gas through heat exchanger, enters the inverse spray rinsing pipe of countercurrent washing tower, inverse with the one-level of jet flow upwards spray, two
The inverse spray of level or the inverse spray of three-level absorb fluid circulation and contact and obtain blend absorbent, form gas-liquid turbulent flow foamed cleaning area；
(2) following current enters countercurrent washing tower bottom to blend absorbent again, enters the bubbling that tube having holes form gas-liquid or liquid liquid
Scrubbing section.
(3) waste gas behind bubble cleaning area is through demister, then through heat exchanger exit, the waste gas row after purifying
Go out.
As tail gas so2Concentration is in 400～500mg/nm3, enable one-level or two grades of inverse sprays absorb fluid circulation, work as so2Dense
Degree is in 2000mg/nm3More than, the inverse spray of three-level absorbs fluid circulation and starts simultaneously.
Case 1
Certain petro-chemical corporation's oil refining portion sulphur unit tail gas, outer smoke evacuation chimney tail gas so of nominal situation2Concentration about 400～500mg/
Nm3, outer smoke evacuation chimney tail gas so of unusual service condition2Concentration about 2000mg/nm3More than.Adopted inverse using one kind as described in Example 1
Stream opposite-flushing type turbulence washing tower emission-control equipment, the sodium hydroxide placing 37% mass concentration in absorbing liquid circulating slot absorbs
Liquid, saturated solution outer comb exclusion is saturation metabisulfite solution, and nominal situation starts one-level or two grades of inverse spray absorbing liquid systems；?
Tail gas unusual fluctuations operating mode, chain automatic control starts three-level inverse spray absorbing liquid system simultaneously it is ensured that sulfur device exhaust so2Concentration is processed
Reach 100mg/nm3Hereinafter, then after heat exchanger heating, air-introduced machine can be increased depending on operating mode, after purification, tail gas is ultimately discharged into chimney.
Case 2
There is 1 200t/h coal-burning boiler in certain power plant, adopts adverse current opposite-flushing type turbulent flow using one kind as described in Example 1
Scrubbing tower emission-control equipment, places ammoniacal liquor in absorbing liquid circulating slot, due to being that air-liquid two phase countercurrent flow liquidates hybrid reaction, with
So in flue gas2, the impurity reaction rate such as dust is fast, absorption efficiency is high.In addition this inventive technique adopts large aperture nozzle, absorbs
Ca (oh) is placed in liquid circulating slot2Circulation fluid solid content reaches 10%～20%, and saturated solution outer comb exclusion is saturation calcium sulfate
Solution, it is to avoid the phenomenon such as traditional fountain filler easily blocks, fouling, in the case that liquid-gas ratio is certain, improves it to so2's
Absorbability, the desulfurization meeting coal-burning boiler requires.Using tail gas so after this inventive technique2Concentration processes and reaches 30mg/nm3With
Under, dust 10mg/nm3Hereinafter, then through heat exchange tail gas it is ultimately discharged into chimney.
The foregoing is only embodiments of the invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in the technology neck of other correlations
Domain, is included within the scope of the present invention.
Claims (5)
1. one kind adopts adverse current opposite-flushing type turbulence washing tower emission-control equipment it is characterised in that including heat exchanger, countercurrent washing
The outer comb of tower, demister, saturated solution, absorbing liquid circulating slot, circulating pump, described countercurrent washing tower is provided with inverse spray rinsing pipe, inverse
One end of spray rinsing pipe connects heat exchanger, and the other end is deep into the bottom of countercurrent washing tower, is provided with described inverse spray rinsing pipe
Inverse spray structure, inverse spray structure is connected with absorbing liquid circulating slot pipeline by circulating pump, and described demister is arranged on countercurrent washing
The top of tower, demister is connected with heat exchanger by pipeline, and the outer comb of described saturated solution is arranged on countercurrent washing tower bottom, institute
The countercurrent washing tower stated is connected by pipeline with absorbing liquid circulating slot.
2. according to claim 1 a kind of using adverse current opposite-flushing type turbulence washing tower emission-control equipment it is characterised in that
Described inverse spray rinsing pipe is provided with the inverse spray structure of one-level, two grades and three-level.
3. according to claim 2 a kind of using adverse current opposite-flushing type turbulence washing tower emission-control equipment it is characterised in that
The inverse spray structure of described one-level, two grades or three-level carries out pipeline connection, respective circulating pump with corresponding respective circulating pump
Carry out pipeline with absorbing liquid circulating slot again to be connected.
4. according to claim 1 a kind of using adverse current opposite-flushing type turbulence washing tower emission-control equipment it is characterised in that
The nozzle being provided with 3 1-20 centimetre of bores in every grade of inverse spray structure, each nozzle angle is spaced 120 °.
5. according to claim 1 a kind of using adverse current opposite-flushing type turbulence washing tower emission-control equipment it is characterised in that
The bottom of described inverse spray rinsing pipe is provided with tube having holes, and the tube wall aperture of described tube having holes is 1-20 millimeter.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824035A (en) * | 2017-12-01 | 2018-03-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of coking relieving haperacidity exhaust gas cleaner and method |
| CN109647143A (en) * | 2018-11-29 | 2019-04-19 | 何爱建 | A kind of mobile alkali mist absorption plant of cold-rolled steel processing |
| CN112642281A (en) * | 2020-12-28 | 2021-04-13 | 宜宾海翔化工有限责任公司 | Cooling washing dust removal system and method for hydrogen sulfide acid production |
-
2016
- 2016-08-20 CN CN201620910544.6U patent/CN205886581U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824035A (en) * | 2017-12-01 | 2018-03-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of coking relieving haperacidity exhaust gas cleaner and method |
| CN109647143A (en) * | 2018-11-29 | 2019-04-19 | 何爱建 | A kind of mobile alkali mist absorption plant of cold-rolled steel processing |
| CN112642281A (en) * | 2020-12-28 | 2021-04-13 | 宜宾海翔化工有限责任公司 | Cooling washing dust removal system and method for hydrogen sulfide acid production |
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