CN207734822U - A kind of coking relieving haperacidity exhaust gas cleaner - Google Patents
A kind of coking relieving haperacidity exhaust gas cleaner Download PDFInfo
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- CN207734822U CN207734822U CN201721656164.5U CN201721656164U CN207734822U CN 207734822 U CN207734822 U CN 207734822U CN 201721656164 U CN201721656164 U CN 201721656164U CN 207734822 U CN207734822 U CN 207734822U
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- washing column
- tower body
- ammonia wastewater
- distilled ammonia
- sulfuric acid
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Abstract
The utility model is related to a kind of coking relieving haperacidity exhaust gas cleaner, dynamic wave filler washing column is made of washing column tower body and reverse jet tube, and distilled ammonia wastewater circulating slot, packing layer and distilled ammonia wastewater spray thrower are provided, in sequence from bottom to top, in washing column tower body；Reverse jet tube is set to washing column tower body side, and top sets sulfuric acid tail gas air inlet, and bottom is connected to washing column tower body inner space, and connectivity part is set to below packing layer, the top of steam ammonia waste water circulating slot；Distilled ammonia wastewater circulating slot side sets circulation fluid outlet, connects Dynawave nozzle by circulation fluid pipeline, circulating pump is set on circulation fluid pipeline, Dynawave nozzle is set to the lower part of reverse jet tube；Distilled ammonia wastewater conveyance conduit outside the connection of distilled ammonia wastewater spray thrower；Sulfuric acid tail gas gas outlet is set at the top of washing column tower body, mist eliminator and chimney are sequentially connected by exhaust pipe.The utility model can realize the high-efficient purification of sulfuric acid tail gas, and apparatus structure simple and compact, floor space are small, manufacturing cost is low, service life is long.
Description
Technical field
The utility model is related to industrial waste gas purifying processing technology field more particularly to a kind of coking low-quality sulfur and take off
The purifier of sulfuric acid tail gas in sulphur liquid waste incineration extracting sulfuric acid technique.
Background technology
In producing sulfuric acid process, outer last person's gas is will produce, both contains harmless nitrogen, oxygen and titanium dioxide in tail gas
Carbon also contains the sulfur dioxide and acid mist for having pollution to air, it is necessary to by processing, just allow outer row after reaching discharge standard.
Latter stage in 20th century, Sulphuric Acid Enterprises are acted in accordance with it GB16297-1996《Discharge standard of air pollutants》, as China is comprehensive
The promotion of national power, environmental protection grade are continuously improved.2010, State Ministry of Environmental Protection promulgated stringenter GB26132-2010《Sulphur
Sour emission of industrial pollutants standard》Afterwards, clear stipulaties new device in 1 day March in 2011, existing apparatus is in 2013 10
Start to execute new discharge standard from the moon 1, sulfur dioxide in tail gas emission limit is 400mg/m3, sulfuric acid mist emission limit be
30mg/m3, granular material discharged limit value be 50mg/m3(especially discharge dioxide region sulphur emissions limit value is 200mg/m3, sulfuric acid mist
Emission limit is 5mg/m3, granular material discharged limit value be 30mg/m3).It is improved, and is had further stringent by environmental regulation grade
Trend, Sulphuric Acid Enterprises must reinforce the desulfurization dynamics of existing outer last person's gas, ensure qualified discharge.
Industry residing for Sulphuric Acid Enterprises is different, and the technological process that extracting sulfuric acid uses is also different, the processing of tail gas
Technology is also not quite similar, and mainly has sodium alkali, ammonia-acid process, lime cream absorption method, activated coke method, new catalytic method etc..Using what
Kind tail gas disposal technique, answers adaptation to local conditions to fully consider process characteristic, desulfurizing agent source, the market of by-product, investment cost, fortune
Row cost and the problems such as whether bring secondary environmental pollution.
Currently, coking industry extracting sulfuric acid mainly has Top's rope WSA wet methods acid-making process and the burnt resistance to low-quality sulphur of middle smelting
Sulphur and desulfurization waste liquor burn acid-making process.The former mainly coordinates vacuum potassium carbonate desulfurization technique, using regenerate come acid gas burn
Acid is fired, built device design, production time are more early, and tail gas can only meet discharge standard at that time, can not ensure to meet existing
Emission request needs to increase exhaust gas cleaner；The latter is useless using sulfur melting kettle sulphur cream and desulfurization mainly for HPF sulfur removal technologies
The concentrate of liquid burns relieving haperacidity,《Fuel and chemical industry》The 6th phases of volume 46 in 2015 to coking low-quality sulfur and desulfurization waste liquor
The ammonium hydroxide absorption process tail gas disposal technique for burning acid-making process did process introduction, this method is consumed using ammonium hydroxide as absorbent
The absorbing liquid of a large amount of ammonium hydroxide, generation needs loopback upgrading unit to handle, and increases energy consumption, and exhaust gas desulfurization tower is Carbon steel stuffing material
Tower, corrosion resistance is not high, and resistance is big, and investment is high.
Invention content
The utility model provides a kind of coking relieving haperacidity exhaust gas cleaner, can realize the high-efficient purification of sulfuric acid tail gas,
And apparatus structure simple and compact, floor space are small, manufacturing cost is low, service life is long.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of coking relieving haperacidity exhaust gas cleaner, including dynamic wave filler washing column, mist eliminator and chimney；The dynamic wave
Filler washing column is made of washing column tower body and reverse jet tube, and distilled ammonia wastewater cycle is provided, in sequence from bottom to top, in washing column tower body
Slot, packing layer and distilled ammonia wastewater spray thrower；Reverse jet tube is set to washing column tower body side, and top sets sulfuric acid tail gas air inlet, bottom
Portion is connected to washing column tower body inner space, and connectivity part is set to below packing layer, the top of steam ammonia waste water circulating slot；Ammonia still process
Waste water circulating slot side sets circulation fluid outlet, connects Dynawave nozzle by circulation fluid pipeline, circulating pump is set on circulation fluid pipeline,
Dynawave nozzle is set to the lower part of reverse jet tube；Distilled ammonia wastewater conveyance conduit outside the connection of distilled ammonia wastewater spray thrower；Washing column tower
Sulfuric acid tail gas gas outlet is set at the top of body, mist eliminator and chimney are sequentially connected by exhaust pipe.
In addition the circulation fluid pipeline in the circulating pump downstream connects external biochemical sewage processing unit.
The dynamic wave filler washing column and chimney are glass steel material.
The distilled ammonia wastewater spray thrower is ring sparger.
Compared with prior art, the utility model has the beneficial effects that：
1) dynamic wave scrubbing tower and padding washing are incorporated into a tower body, using dynamic wave level-one washing absorption and spray
The mode that leaching packing layer reaction two level washing absorption is combined, effectively improves the absorption of sulfur dioxide and acid mist in sulfuric acid tail gas
Rate keeps sulfuric acid tail gas purification more complete, is more in line with environmental requirement；
2) dynamic wave filler washing column and chimney are glass steel material, and good corrosion resistance is compact-sized, investment and operation
It is at low cost；
3) after absorption efficiency improves, chimney height can reduce, and steel structure frame dosage is less, small investment；
4) it uses distilled ammonia wastewater as absorbent, reduces biochemical sewage processing unit and concentration list during coking production
The load of member, reduces operating cost.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of coking relieving haperacidity exhaust gas cleaner described in the utility model.
In figure：1. 4. circulating pump of washing column tower body 2. sulfuric acid tail gas air inlet, 3. Dynawave nozzle, 5. distilled ammonia wastewater follows
8. sulfuric acid tail gas gas outlet of annular groove 6. packing layer, 7. distilled ammonia wastewater spray thrower, 9. circulation fluid exports 10. reverse jet tubes 11. and catches
12. chimney of day with fog.
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of coking relieving haperacidity exhaust gas cleaner described in the utility model, including dynamic wave filler are cleaned
Tower, mist eliminator 11 and chimney 12；The dynamic wave filler washing column is made of washing column tower body 1 and reverse jet tube 10, washing column tower
Distilled ammonia wastewater circulating slot 5, packing layer 6 and distilled ammonia wastewater spray thrower 7 are provided, in sequence from bottom to top, in body 1；Reverse jet tube 10 is set to and washes
Net 1 side of tower tower body, top set sulfuric acid tail gas air inlet 2, and bottom is connected to 1 inner space of washing column tower body, and connectivity part
Set on 6 lower section of packing layer, the top of steam ammonia waste water circulating slot 5；5 side of distilled ammonia wastewater circulating slot sets circulation fluid outlet 9, passes through
Circulation fluid pipeline connects Dynawave nozzle 3, and circulating pump 4 is set on circulation fluid pipeline, and Dynawave nozzle 3 is set under reverse jet tube 10
Portion；Distilled ammonia wastewater spray thrower 7 connects external distilled ammonia wastewater conveyance conduit；1 top of washing column tower body sets sulfuric acid tail gas gas outlet
8, mist eliminator 11 and chimney 12 are sequentially connected by exhaust pipe.
In addition the circulation fluid pipeline in 4 downstream of the circulating pump connects external biochemical sewage processing unit.
The dynamic wave filler washing column and chimney 12 are glass steel material.
The distilled ammonia wastewater spray thrower 7 is ring sparger.
Based on a kind of coking relieving haperacidity exhaust purifying method of coking relieving haperacidity exhaust gas cleaner described in the utility model, including
Following steps：
1) distilled ammonia wastewater in distilled ammonia wastewater circulating slot 5 is sent to the Dynawave nozzle 3 of 10 lower part of reverse jet tube by circulating pump 4
Place, and spray upwards, to entering from sulfuric acid tail gas air inlet 2 and carrying out counter-current absorption along the sulfuric acid tail gas of 10 downlink of reverse jet tube,
Generate sodium sulfite；Sulfuric acid tail gas after one and washing absorption enters 1 lower part of washing column tower body, and sulfuric acid tail gas upward
It flows gas outlet 8；
2) it exports from ammonia still process unit and is sent to distilled ammonia wastewater through distilled ammonia wastewater conveyance conduit through overcooled distilled ammonia wastewater and sprayed
Drench device 7, the top of self filler layer 6 spray downwards, in packing layer 6 distilled ammonia wastewater with after level-one is washed sulfur dioxide do not inhaled
Complete sulfuric acid tail gas reaction is received, continues to absorb, generates sodium sulfite；
3) sulfuric acid tail gas after two level washing absorption is discharged from sulfuric acid offgas outlet 8, wherein into the trapping of mist eliminator 11
The acid mist of entrainment, the tail gas after trapping reach the discharge standard of national requirements, and air is discharged by chimney 12；
4) the distilled ammonia wastewater part in distilled ammonia wastewater circulating slot 5 exports side line by circulating pump 4 and is sent at biochemical sewage
Manage unit.
In reverse jet tube 10, distilled ammonia wastewater passes through the bottom-up reverse air inlet gas for spraying into sulfuric acid tail gas of Dynawave nozzle 3
In stream, makes the high speed in reversed direction head-on collision of liquid gas two-phase, adjust the outlet pressure of circulating pump 4, when the momentum of liquid gas two-phase reaches balance,
The froth zone of a high turbulence is formed, in the area, the contact of liquid gas two-phase high velocity turbulent flow, contact surface area is big, and this
A little contact surfaces are constantly updated rapidly, and efficient washing effect is reached.
A kind of coking relieving haperacidity exhaust gas cleaner described in the utility model and method, especially suitable for coking acid-making process
Vent gas treatment.Dynamic wave filler washing column ensures device structure intensity using good, the at low cost glass steel material of corrosion resistance
Under the premise of, weight of equipment is greatly reduced, reduces correlative investment；Using dynamic wave principle, will be arranged at biochemical sewage outside ammonia still process unit
The alkaline distilled ammonia wastewater of unit is managed as spraying cycle liquid, first order absorption is carried out to sulfuric acid tail gas, subsequent sulfuric acid tail gas continues to lead to
The packing layer 6 in washing column tower body 1 is crossed, is contacted with the distilled ammonia wastewater of spray and carries out two level absorption, further remove sulfuric acid tail gas
In sulfur dioxide and acid mist, tail gas clean efficiency higher, device structure is simpler.
Method described in the utility model will arrange the alkaline distilled ammonia wastewater of biochemical sewage processing unit outside coke-oven plant's ammonia still process unit
As absorbent, absorbs the absorbing liquid in sulfuric acid tail gas after sulfur dioxide and be sent to biochemical sewage processing unit again, this absorption
Liquid NH3Content is less than 200mg/L, Na2SO3Content is less than 80mg/L, also micro Na2SO4、(NH4)2SO3、(NH4)2SO4,
PH value will not constitute biochemical bacterium and endanger, reduce the load of biochemical sewage processing unit and upgrading unit, drop close to neutrality
Low operating cost.
The preferable specific implementation mode of the above, only the utility model, but the scope of protection of the utility model is not
Be confined to this, any one skilled in the art within the technical scope disclosed by the utility model, according to this practicality
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (4)
1. a kind of coking relieving haperacidity exhaust gas cleaner, which is characterized in that including dynamic wave filler washing column, mist eliminator and chimney；
The dynamic wave filler washing column is made of washing column tower body and reverse jet tube, and ammonia still process is provided, in sequence from bottom to top, in washing column tower body
Waste water circulating slot, packing layer and distilled ammonia wastewater spray thrower；Reverse jet tube be set to washing column tower body side, top set sulfuric acid tail gas into
Gas port, bottom are connected to washing column tower body inner space, and connectivity part be set to packing layer below, steam ammonia waste water circulating slot it is upper
Side；Distilled ammonia wastewater circulating slot side sets circulation fluid outlet, connects Dynawave nozzle by circulation fluid pipeline, is set on circulation fluid pipeline
Circulating pump, Dynawave nozzle are set to the lower part of reverse jet tube；Distilled ammonia wastewater conveyance conduit outside the connection of distilled ammonia wastewater spray thrower；It washes
Sulfuric acid tail gas gas outlet is set at the top of net tower tower body, mist eliminator and chimney are sequentially connected by exhaust pipe.
2. a kind of coking relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the circulating pump downstream
In addition circulation fluid pipeline connects external biochemical sewage processing unit.
3. a kind of coking relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the dynamic wave filler is washed
Net tower and chimney are glass steel material.
4. a kind of coking relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the distilled ammonia wastewater spray
Device is ring sparger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656164.5U CN207734822U (en) | 2017-12-01 | 2017-12-01 | A kind of coking relieving haperacidity exhaust gas cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721656164.5U CN207734822U (en) | 2017-12-01 | 2017-12-01 | A kind of coking relieving haperacidity exhaust gas cleaner |
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| Publication Number | Publication Date |
|---|---|
| CN207734822U true CN207734822U (en) | 2018-08-17 |
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| CN201721656164.5U Active CN207734822U (en) | 2017-12-01 | 2017-12-01 | A kind of coking relieving haperacidity exhaust gas cleaner |
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Cited By (2)
| 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 |
| CN110127630A (en) * | 2019-04-12 | 2019-08-16 | 南京汇仁化工设备有限公司 | Spent acid purifying plant and its method of purification |
-
2017
- 2017-12-01 CN CN201721656164.5U patent/CN207734822U/en active Active
Cited By (2)
| 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 |
| CN110127630A (en) * | 2019-04-12 | 2019-08-16 | 南京汇仁化工设备有限公司 | Spent acid purifying plant and its method of purification |
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