CN208389766U - A kind of relieving haperacidity exhaust gas cleaner - Google Patents
A kind of relieving haperacidity exhaust gas cleaner Download PDFInfo
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- CN208389766U CN208389766U CN201820628990.7U CN201820628990U CN208389766U CN 208389766 U CN208389766 U CN 208389766U CN 201820628990 U CN201820628990 U CN 201820628990U CN 208389766 U CN208389766 U CN 208389766U
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Abstract
The utility model relates to a kind of relieving haperacidity exhaust gas cleaners, including the vertical column being made of skirt, tower body, upper cover and lower head, and the de- SO being successively set in tower body from bottom to top2Section, de- NH3Section and mist catching section；De- SO2Section and de- NH3It is separated between section by disconnected tower tray, takes off NH3It is directly connected between section and mist catching section；De- SO2Section sets circulating cleaning solution flusher, takes off NH3Section sets recycle acid washing lotion flusher；Offgas outlet is set at the top of upper cover, takes off SO2Sour gas inlet pipe is equipped in the tower body of section；The bottom of lower head sets bottoms material outlet.The utility model is by collecting de- SO2Section, de- NH3Section and mist catching section disposably complete tail gas clean-up in the relieving haperacidity exhaust gas cleaner of one, compared with prior art, are conducive to save equipment investment, reduce occupied area, improve treatment effeciency, and make to operate more convenient.
Description
Technical field
The utility model relates to industrial tail gas purification treatment technology fields, more particularly to one kind is for coking industry relieving haperacidity
The tail gas generated in technical process carries out the device of purified treatment.
Background technique
Currently, coking industry is handling low-quality sulfur and when desulfurization waste liquor frequently with the technique for being burned relieving haperacidity,
Process flow mainly includes pretreatment of raw material process, burns process, waste heat recovery process, intermediate cleaning procedure, drying process, turns
Chemical industry sequence absorbs process and acid tail gas cleaning procedure.In acid tail gas purification process frequently with the desulfurization of exhaust gas desulfurization tower in
It washes the method that ammonia combines with tower to be handled, it is more that the shortcoming of this processing method is needed equipment, and takes up an area
Area is larger, and complicated operation.
Summary of the invention
The utility model provides a kind of relieving haperacidity exhaust gas cleaner, by collecting de- SO2Section, de- NH3Section and mist catching section are in one
The relieving haperacidity exhaust gas cleaner of body disposably completes tail gas clean-up, compared with prior art, is conducive to save equipment investment, subtract
Small footprint size improves treatment effeciency, and makes to operate more convenient.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of relieving haperacidity exhaust gas cleaner, including the vertical column being made of skirt, tower body, upper cover and lower head, and
The de- SO being successively set in tower body from bottom to top2Section, de- NH3Section and mist catching section；De- SO2Section and de- NH3By the tower tray that breaks between section
It is separated, takes off NH3It is directly connected between section and mist catching section；De- SO2Section sets circulating cleaning solution flusher, takes off NH3Section sets circulation
Pickling solution flusher；Offgas outlet is set at the top of upper cover, takes off SO2Sour gas inlet pipe is equipped in the tower body of section；Lower head
Bottom set bottoms material outlet.
The de- SO2Section is empty spray tower section, and circulating cleaning solution flusher includes that circulating cleaning solution outlet, cleaning solution follow
Ring pump, circulating cleaning solution spray line and cleaning solution spray head；De- SO2The bottom of section retains the tower bottoms of setting liquid level, low
Circulating cleaning solution outlet is set in the tower body side of tower bottoms liquid level, is connected at by circulating cleaning solution conveyance conduit de-
SO2The circulating cleaning solution spray line at section top, sets detergent circulator and remained ammonia entrance on circulating cleaning solution conveyance conduit；
It is equipped with sour gas inlet pipe in tower body above tower bottoms, sets multiple tail gas sprays positioned at the intracorporal relieving haperacidity gas inlet tube top portion of tower
Entrance.
The circulating cleaning solution spray line is the endless tube set on tower body periphery, and being circumferentially with for circulating cleaning solution spray line is more
A cleaning solution spray head, each cleaning solution spray head extend radially into tower body, and hydrojet direction is towards obliquely downward in tower.
The de- NH3Section is empty spray tower section, and recycle acid washing lotion flusher includes that recycle acid washing lotion fairlead, pickling solution follow
Ring pump and recycle acid washing lotion spray line；There are the pickling liquid layer of setting liquid level, the bottoms of disconnected tower tray to set at the top of disconnected tower tray
Recycle acid washing lotion fairlead is connected at de- NH by pickling solution circulating line3The recycle acid washing lotion spray line at section top, pickling
Pickling solution circulating pump and phosphoric acid supplement entrance are set on liquid circulating line；Tower body side lower than pickling liquid layer liquid level sets pickling
Material fairlead, pickling material fairlead connect external resolution unit, pickling material delivery pipe by pickling material conveying pipe
On set valve one.
The recycle acid washing lotion spray line is the endless tube set on tower body periphery, and being circumferentially with for recycle acid washing lotion spray line is more
A pickling solution spray head, each pickling solution spray head extend radially into tower body, and hydrojet direction is towards obliquely downward in tower.
The mist catching section uses fiber mist eliminator.
The bottoms material outlet connects external burning unit by material conveying pipe, sets valve on material conveying pipe
Door two.
Compared with prior art, the utility model has the beneficial effects that
1) relieving haperacidity tail gas enters in the tower body of relieving haperacidity exhaust gas cleaner, successively by de- SO2Section, de- NH3Section and catch mist
Section, that is, can reach purification purpose, by the direct qualified discharge of tower top, can satisfy existing environmental requirement；
2) technical process that entire relieving haperacidity tail gas clean-up can be completed in a vertical column, saves equipment investment, subtracts
Small occupied area improves treatment effeciency, and makes to operate more convenient；
3) for the coke-oven plant using producing anhydrous ammonia by absorbing ammonium phosphate technique, phosphoric acid absorbs the ammonia in tail gas, reaches
It can pump to certain density phosphorus ammonium pregnant liquor to resolution unit and carry out subsequent operation, take off SO2The waste liquid that section bottom generates can be pumped
Outsourcing raw material, no outlet waste are not required to so that a closed-loop system can be formed in coke-oven plant to unit is burned.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of relieving haperacidity exhaust gas cleaner described in the utility model.
Fig. 2 be circulating cleaning solution spray line described in the utility model and cleaning solution spray head (or recycle acid washing lotion spray line with
Pickling solution spray head) structural schematic diagram.
Fig. 3 is the top view of Fig. 2.
Figure label: 1. skirt, 2. tower body, 3. lower head 4. takes off SO25. de- NH of section3Section 6. mist catching section, 7. upper cover
10. bottoms material outlet of tower tray, 11. valve, 2 12. circulating cleaning solution outlet, 13. cleaning solution 8. offgas outlet 9. breaks
14. 15. circulating cleaning solution spray line of relieving haperacidity gas inlet pipe, 16. recycle acid washing lotion spray line of circulating pump, 17. pickling material
The spray of 18. valve of fairlead, one 19. 21. cleaning solution spray head of recycle acid washing lotion 20. fiber mist eliminator of fairlead, 22. pickling solution
First 23. pickling solution circulating pump
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of relieving haperacidity exhaust gas cleaner described in the utility model, including by skirt 1, tower body 2, upper cover
7 and the vertical column that forms of lower head 3, and the de- SO being successively set in tower body 2 from bottom to top2Section 4, de- NH3Section 5 and catches mist
Section 6；De- SO24 and de- NH of section3It is separated between section 5 by disconnected tower tray 9, takes off NH3It is directly connected between section 5 and mist catching section 6；It is de-
SO2Section 4 sets circulating cleaning solution flusher, takes off NH3Section 5 sets recycle acid washing lotion flusher；The top of upper cover 7 sets tail gas and goes out
Mouth 8 takes off SO2Sour gas inlet pipe 14 is equipped in the tower body 2 of section 4；The bottom of lower head 3 sets bottoms material outlet 10.
The de- SO2Section 4 is empty spray tower section, and circulating cleaning solution flusher includes circulating cleaning solution outlet 12, washing
Liquid circulating pump 13, circulating cleaning solution spray line 15 and cleaning solution spray head 21；De- SO2The bottom of section 4 has retained setting liquid level
Tower bottoms, 2 side of tower body lower than tower bottoms liquid level sets circulating cleaning solution outlet 12, is conveyed by circulating cleaning solution
Pipeline is connected at de- SO2The circulating cleaning solution spray line 15 at 4 top of section, cleaning solution circulation is set on circulating cleaning solution conveyance conduit
Pump 13 and remained ammonia entrance；Sour gas inlet pipe 14, the relieving haperacidity tail in tower body 2 are equipped in tower body 2 above tower bottoms
Multiple tail gas entrances are set at the top of gas inlet tube 14.
As shown in Figure 2 and Figure 3, the circulating cleaning solution spray line 15 is the endless tube set on 2 periphery of tower body, circulating cleaning solution
Spray line 15 is circumferentially with multiple cleaning solution spray heads 21, and each cleaning solution spray head 21 extends radially into tower body 2, hydrojet side
To towards obliquely downward in tower.
The de- NH3Section 5 is empty spray tower section, and recycle acid washing lotion flusher includes recycle acid washing lotion fairlead 19, pickling
Liquid circulating pump 23 and recycle acid washing lotion spray line 16；There are the pickling liquid layers of setting liquid level at the top of disconnected tower tray 9, and break tower tray
9 bottom sets recycle acid washing lotion fairlead 19, is connected at de- NH by recycle acid washing lotion conveyance conduit3The circulation at 5 top of section
Pickling solution spray line 16 sets pickling solution circulating pump 23 and phosphoric acid supplement entrance on recycle acid washing lotion conveyance conduit；Lower than pickling solution
2 side of tower body of layer liquid level sets pickling material fairlead 17, and pickling material fairlead 17 passes through pickling material conveying pipe
External resolution unit is connected, sets valve 1 on pickling material delivery pipe.
As shown in Figure 2 and Figure 3, the recycle acid washing lotion spray line 16 is the endless tube set on 2 periphery of tower body, recycle acid washing lotion
Spray line 16 is circumferentially with multiple pickling solution spray heads 22, and each pickling solution spray head 22 extends radially into tower body 2, hydrojet side
To towards obliquely downward in tower.
The mist catching section 6 uses fiber mist eliminator.
The bottoms material outlet 10 connects external burning unit by material conveying pipe, sets on material conveying pipe
Valve 2 11.
A kind of relieving haperacidity tail gas clean-up technique based on device described in the utility model, includes the following steps:
1) relieving haperacidity tail gas to be clean is entered the de- SO of relieving haperacidity exhaust gas cleaner by relieving haperacidity gas inlet pipe 1424 towers of section
In body 2, with autospasy SO2The cleaning solution counter current contacting that the 4 multiple cleaning solution spray heads 21 in top of section spray；Cleaning solution it is main at
It is divided into sulfurous acid ammonia and remained ammonia, the SO in tail gas2It is reacted with sulfurous acid ammonia and generates ammonium bisulfite, later fall into tower bottoms
In；The tar and other impurity carried in remained ammonia is slowly precipitated to tower bottoms bottom, when the material of tower bottoms bottom reaches
After limiting concentration, Open valve 2 11, which is passed to, burns the subsequent burning disposal of unit progress；
2) the bisulfite ammonium salt solution on tower bottoms upper layer is drawn by circulating cleaning solution outlet 12, by detergent circulator
13 are sent to circulating cleaning solution spray line 15, are added in the circulating cleaning solution conveyance conduit of circulation washing 15 upstream of spray line remaining
The remained ammonia that ammonium hydroxide unit is sent carries out abundant in 15 sulfite hydrogen ammonium salt solution of circulating cleaning solution spray line and remained ammonia
Ammonium bisulfite is reduced into ammonium sulfite, then is sprayed by multiple cleaning solution spray heads 21 into tower body 2 by mixing, makes to spray
It spills more uniform, and is conducive to coming into full contact with for cleaning solution and tail gas；
3) SO is removed2Tail gas afterwards is by disconnected tower tray 9 by taking off SO2Section 4 enters de- NH3In section 5, NH is taken off3Section 5 uses phosphorus
Acid carries out washing ammonia；Autospasy NH3The pickling solution spray head 22 at 5 top of section is sprayed onto pickling solution and de- SO in tower body 22The tail come in section 4
Gas carries out counter current contacting, and the ammonia and phosphatase reaction in tail gas generate phosphorus ammonium pregnant liquor and drops into the pickling liquid layer on disconnected tower tray 9；
4) part phosphorus ammonium pregnant liquor is drawn by pickling material fairlead 17, pickling solution spray is sent to by pickling solution circulating pump 23
Spill pipe；Fresh phosphoric is supplemented in the recycle acid washing lotion conveyance conduit of 16 upstream of recycle acid washing lotion spray line, in recycle acid washing lotion
Phosphorus ammonium pregnant liquor is sufficiently mixed with phosphoric acid in spray line 16, then is sprayed by multiple pickling solution spray heads 22 into tower body 2,
Make sprinkling more evenly, and is conducive to coming into full contact with for pickling solution and tail gas；
5) after the phosphorus ammonium pregnant liquor concentration on disconnected tower tray 9 in pickling liquid layer reaches limiting concentration, valve 1 is opened by phosphorus
Ammonium rich solution is drawn by pickling material fairlead 17, and is sent to resolution unit and is carried out subsequent dissection process；
6) by de- NH3Tail gas after 5 deaminations of section enters directly into mist catching section 6, captures tail gas by fiber mist eliminator
In droplet and by the direct qualified discharge of the offgas outlet of tower top 8.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
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 (7)
1. a kind of relieving haperacidity exhaust gas cleaner, which is characterized in that vertical including being made of skirt, tower body, upper cover and lower head
Formula tower, and the de- SO being successively set in tower body from bottom to top2Section, de- NH3Section and mist catching section；De- SO2Section and de- NH3Duan Zhi
Between be separated by disconnected tower tray, take off NH3It is directly connected between section and mist catching section；De- SO2Section sets circulating cleaning solution flusher, takes off
NH3Section sets recycle acid washing lotion flusher；Offgas outlet is set at the top of upper cover, takes off SO2Sour gas inlet is equipped in the tower body of section
Pipe；The bottom of lower head sets bottoms material outlet.
2. a kind of relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the de- SO2Section is empty spray tower
Section, circulating cleaning solution flusher includes circulating cleaning solution outlet, detergent circulator, circulating cleaning solution spray line and washing
Liquid spray head；De- SO2The bottom of section retains the tower bottoms of setting liquid level, and the tower body side lower than tower bottoms liquid level is set
Circulating cleaning solution outlet is connected at de- SO by cleaning solution circulating line2The circulating cleaning solution spray line at section top, washing
Detergent circulator and remained ammonia entrance are set on liquid circulating line；Sour gas inlet pipe is equipped in tower body above tower bottoms,
Multiple tail gas entrances are set positioned at the intracorporal relieving haperacidity gas inlet tube top portion of tower.
3. a kind of relieving haperacidity exhaust gas cleaner according to claim 2, which is characterized in that the circulating cleaning solution spray line
For set on the endless tube of tower body periphery, circulating cleaning solution spray line is circumferentially with multiple cleaning solution spray heads, each cleaning solution spray head
It extends radially into tower body, hydrojet direction is towards obliquely downward in tower.
4. a kind of relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the de- NH3Section is empty spray tower
Section, recycle acid washing lotion flusher includes recycle acid washing lotion fairlead, pickling solution circulating pump and recycle acid washing lotion spray line；Disconnected tower
There are the pickling liquid layer of setting liquid level, the bottoms of disconnected tower tray to set recycle acid washing lotion fairlead, pass through pickling solution at the top of disk
Circulating line is connected at de- NH3The recycle acid washing lotion spray line at section top, sets pickling solution circulating pump on pickling solution circulating line
And phosphoric acid supplements entrance；Tower body side lower than pickling liquid layer liquid level sets pickling material fairlead, pickling material fairlead
External resolution unit is connected by pickling material conveying pipe, sets valve one on pickling material delivery pipe.
5. a kind of relieving haperacidity exhaust gas cleaner according to claim 4, which is characterized in that the recycle acid washing lotion spray line
For set on the endless tube of tower body periphery, recycle acid washing lotion spray line is circumferentially with multiple pickling solution spray heads, each pickling solution spray head
It extends radially into tower body, hydrojet direction is towards obliquely downward in tower.
6. a kind of relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the mist catching section is removed using fiber
Day with fog.
7. a kind of relieving haperacidity exhaust gas cleaner according to claim 1, which is characterized in that the bottoms material outlet is logical
The external burning unit of material conveying pipe connection is crossed, sets valve two on material conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820628990.7U CN208389766U (en) | 2018-04-28 | 2018-04-28 | A kind of relieving haperacidity exhaust gas cleaner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820628990.7U CN208389766U (en) | 2018-04-28 | 2018-04-28 | A kind of relieving haperacidity exhaust gas cleaner |
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| CN208389766U true CN208389766U (en) | 2019-01-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404639A (en) * | 2018-04-28 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of relieving haperacidity exhaust gas cleaner and technique |
-
2018
- 2018-04-28 CN CN201820628990.7U patent/CN208389766U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404639A (en) * | 2018-04-28 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of relieving haperacidity exhaust gas cleaner and technique |
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