CN204170601U - A kind of FCC regeneration flue gas desulfurization denitrification apparatus - Google Patents

A kind of FCC regeneration flue gas desulfurization denitrification apparatus Download PDF

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Publication number
CN204170601U
CN204170601U CN201420610743.6U CN201420610743U CN204170601U CN 204170601 U CN204170601 U CN 204170601U CN 201420610743 U CN201420610743 U CN 201420610743U CN 204170601 U CN204170601 U CN 204170601U
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absorption
spray
absorption tower
flue gas
water inlet
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CN201420610743.6U
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李来所
陈浩
江厚月
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JIANGSU WISDOM ENGINEERING TECHNOLOGY CO LTD
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JIANGSU WISDOM ENGINEERING TECHNOLOGY CO LTD
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Abstract

The utility model discloses a kind of FCC regeneration flue gas desulfurization denitrification apparatus, comprise the absorption tower vertically arranged, the top on absorption tower is provided with smoke stack emission mouth, demister is provided with successively from top to bottom in inside, absorption tower, secondary spray-absorption device, catch tray and one-level spray-absorption device, one-level spray-absorption device and secondary spray-absorption device are by the shower nozzle and the water inlet pipe composition that are arranged on inside, absorption tower, be positioned on the sidewall of absorption tower in secondary spray-absorption device upper end and offer mist eliminator flushing water inlet, be positioned in secondary spray-absorption device lower end on the sidewall of absorption tower and offer the import of PCC regenerated flue gas successively, absorbing liquid import and air intlet, outside, absorption tower is also provided with first circulatory system and second circulatory system, the utility model not only structure is simple, and denitrification efficiency is high, and in neat stress, aerocolloidal content is little, and effectively control the secondary pollution of neat stress, and investment cost is low, floor space is little, saves operating cost, stable.

Description

A kind of FCC regeneration flue gas desulfurization denitrification apparatus
Technical field
The utility model relates to desulfuring and denitrifying apparatus, specifically a kind of FCC regeneration flue gas desulfurization denitrification apparatus.
Background technology
Along with China's rapid development of economy, more and more prosperous to the demand of the energy.With regard to oil, China becomes net importer from the nineties in last century, is just suffering the puzzlement of international market high price crude oil at present, also must become heavy in the face of self-produced crude oil, sulfur-bearing and import the sulfur-bearing even situation of high-sulfur heavy oil simultaneously.For the petroleum resources of preciousness, or even the high-sulfur heavy oil of inferior quality, must deep processing be carried out.And carry out deep processing, fluid catalytic cracking (FCC) technique is absolutely necessary operation.Thus the sulphur in feedstock oil has quite a few regenerated flue gas with FCC to enter air, and the part nitrogen be present in addition in feedstock oil of together discharging, they cause the pollution to environment jointly.Increasingly strict along with Law on Environmental Protection, SOx and the NOx discharge capacity comprising the various devices of FCC device is subject to strict restriction." 12 " period, country will implement prediction emission to COD (COD), ammonia nitrogen (NH3-N), sulfur dioxide (SO2), nitrogen oxide (NOx) four kinds of major pollutants.For this reason, environmental protecting device must be taked to reduce the discharge capacity of SOx, NOx in FCC device.
FCC regenerated flue gas temperature is lower than 200 DEG C, and traditional denitrating technique SNCR can not meet the requirement of this type of denitrating flue gas.If adopt SCR method just must consider to use low temperature catalyst, owing to containing part SO3 in FCC regenerated flue gas, at low temperatures, SO3 in flue gas can react with NH3 and cause catalyst surface ammonium salt sedimentation problem, covering catalyst effective active area, systematic function is affected, reduces equipment operating efficiency.
Utility model content
Technical problem to be solved in the utility model is, for the shortcoming of above prior art, a kind of FCC regeneration flue gas desulfurization denitrification apparatus is proposed, not only structure is simple, denitrification efficiency is high, in neat stress, aerocolloidal content is little, effectively control the secondary pollution of neat stress, and investment cost is low, floor space is little, save operating cost, resistance is little, stable, by reducing environment temperature, ensure the sufficient reaction time, reduce the discharge capacity of SOx and NOx, greatly reduce the pollution to environment, improve reaction efficiency, save time, and the particle effectively removed by spray equipment in flue gas, further reduction is to the pollution of environment.
In order to solve the problems of the technologies described above, the technical solution of the utility model is achieved in the following ways: a kind of FCC regeneration flue gas desulfurization denitrification apparatus, comprise the absorption tower vertically arranged, the top on absorption tower is provided with smoke stack emission mouth, demister is provided with successively from top to bottom in inside, absorption tower, secondary spray-absorption device, catch tray and one-level spray-absorption device, one-level spray-absorption device and secondary spray-absorption device are by the shower nozzle and the water inlet pipe composition that are arranged on inside, absorption tower, be positioned on the sidewall of absorption tower in secondary spray-absorption device upper end and offer mist eliminator flushing water inlet, be positioned in secondary spray-absorption device lower end on the sidewall of absorption tower and offer the import of PCC regenerated flue gas successively, absorbing liquid import and air intlet,
Outside, absorption tower is also provided with first circulatory system and second circulatory system, first circulatory system is made up of the first circulating pump and one-level spray-absorption device, the water inlet of the first circulating pump is communicated with the delivery port bottom absorption tower, and the delivery port of the first circulating pump is communicated with preprocessor with the shower nozzle in one-level spray-absorption device respectively; Second circulatory system is made up of circulating slot, the second circulating pump, secondary spray-absorption device and catch tray, the delivery port of catch tray is communicated with circulating slot, the bottom of circulating slot is communicated with the water inlet of the second circulating pump, second circulation delivery side of pump is communicated with the shower nozzle in secondary spray-absorption device, and the second circulation delivery side of pump is also communicated with water inlet absorption tower sidewall being positioned at one-level spray-absorption device lower end.
Pass through the technical solution of the utility model, spray-absorption device is provided with in absorption tower, spray a large amount of desulphurization denitration raindrop shape liquid, not only reduce environment temperature can also, the particle in flue gas can be taken away, by adding sulphur in ozone and flue gas and nitre reacts simultaneously, minimizing sulphur and nitre are to the discharge capacity in air, reduce and pollute, and the harmful substance in FCC flue gas can be separated by first circulatory system and the second cyclic system, and enter in follow-up treatment system.
The technical scheme that the utility model limits further is:
Aforesaid FCC regeneration flue gas desulfurization denitrification apparatus, demister comprises the electrostatic precipitator and board-like demister that set gradually from top to bottom, absorption tower sidewall offers and lays respectively at electrostatic precipitator upper end, mist eliminator flushing water inlet between board-like demister and electrostatic precipitator and between secondary spray-absorption device and board-like demister, like this, by harmful objects such as the particle in electrostatic precipitator and board-like demister energy quick adsorption flue gas and large drops, prevent secondary pollution, effective, operating efficiency is high, reduce the discharge capacity of harmful substance, discharge capacity is up to state standards following value range.
Aforesaid FCC regeneration flue gas desulfurization denitrification apparatus, also ozone reactor is provided with between the import of PCC regenerated flue gas and absorption tower, ozone reactor is communicated with ozone generator with temperature lowering water pipeline, spray oxygen grid is also provided with at ozone generator outlet place, ozone can be sprayed in ozone reactor uniformly by spray oxygen grid, and ozone starts after mixing with FCC flue gas to react, the time is long, sufficient reacting, reduces and pollutes.
Aforesaid FCC regeneration flue gas desulfurization denitrification apparatus, increase press is also provided with between air intlet and absorption tower, be positioned at bottom absorption tower on sidewall and be also provided with the first agitator, the second agitator is provided with bottom circulating slot, can make constantly to move bottom absorption tower by increase press and the first agitator, avoid particle to be deposited in bottom and cause equipment fault, the second agitator also plays the effect of stirring, avoids precipitation.
Aforesaid FCC regeneration flue gas desulfurization denitrification apparatus, the bottom of circulating slot also with the outlet increasing press, constantly move to bottom circulating slot also liquid, avoid precipitating.
Aforesaid FCC regeneration flue gas desulfurization denitrification apparatus, the liquid in absorbing liquid import is the one in NaOH, potassium hydroxide, aqua calcis or lime stone slurry.
The beneficial effects of the utility model are: in absorption tower, be provided with spray-absorption device, spray a large amount of desulphurization denitration raindrop shape liquid, not only reducing environment temperature can also, the particle in flue gas can be taken away simultaneously, by adding sulphur in ozone and flue gas and nitre reacts, reducing sulphur and nitre to the discharge capacity in air, reducing and pollute, and the harmful substance in FCC flue gas can be separated by first circulatory system and the second cyclic system, and enter in follow-up treatment system; By harmful objects such as the particle in electrostatic precipitator and board-like demister energy quick adsorption flue gas and large drops, effective, operating efficiency is high, reduces the discharge capacity of harmful substance, and discharge capacity is up to state standards following value range; Ozone can be sprayed in ozone reactor uniformly by spray oxygen grid, and ozone starts after mixing with FCC flue gas to react, the time is long, sufficient reacting, reduces and pollutes; Can make constantly to move bottom absorption tower by increase press and the first agitator, avoid particle to be deposited in bottom and cause equipment fault, the second agitator also plays the effect of stirring, avoids precipitation.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model;
Wherein: 1-absorption tower, 2-smoke stack emission mouth, 3-electrostatic precipitator, the board-like demister of 4-, 5-secondary spray-absorption device, 6-catch tray, 7-one-level spray-absorption device, 8-mist eliminator flushing water inlet, the import of 9-PCC regenerated flue gas, the import of 10-absorbing liquid, 11-air intlet, 12-ozone reactor, 13-temperature lowering water pipeline, 14-ozone generator, 15-sprays oxygen grid, 16-increases press, 17-first agitator, 18-first circulating pump, 19-preprocessor, 20-circulating slot, 21-second circulating pump, 22-second agitator.
Detailed description of the invention
Below the utility model is described in further detail:
embodiment 1
A kind of FCC regeneration flue gas desulfurization denitrification apparatus that the present embodiment provides, comprise the absorption tower 1 vertically arranged, the top on absorption tower 1 is provided with smoke stack emission mouth 2, demister is provided with successively from top to bottom in inside, absorption tower 1, secondary spray-absorption device 5, catch tray 6 and one-level spray-absorption device 7, one-level spray-absorption device 7 and secondary spray-absorption device 5 are by the shower nozzle and the water inlet pipe composition that are arranged on inside, absorption tower 1, be positioned in secondary spray-absorption device 5 upper end on the sidewall of absorption tower 1 and offer mist eliminator flushing water inlet 8, be positioned in secondary spray-absorption device 5 lower end on the sidewall of absorption tower 1 and offer PCC regenerated flue gas import 9 successively, NaOH absorbing liquid import 10 and air intlet 11, demister comprises the electrostatic precipitator 3 and board-like demister 4 that set gradually from top to bottom, absorption tower 1 sidewall offers and lays respectively at electrostatic precipitator 3 upper end, mist eliminator flushing water inlet 8 between board-like demister 4 and electrostatic precipitator 3 and between secondary spray-absorption device 5 and board-like demister 4, by harmful objects such as the particle in electrostatic precipitator and board-like demister energy quick adsorption flue gas and large drops, effective, operating efficiency is high, reduce the discharge capacity of harmful substance, discharge capacity is up to state standards following value range,
Outside, absorption tower 1 is also provided with first circulatory system and second circulatory system, first circulatory system is made up of the first circulating pump 18 and one-level spray-absorption device 7, the water inlet of the first circulating pump 18 is communicated with the delivery port bottom absorption tower 1, and the delivery port of the first circulating pump 18 is communicated with preprocessor 19 with the shower nozzle in one-level spray-absorption device 7 respectively; Second circulatory system is made up of circulating slot 20, second circulating pump 21, secondary spray-absorption device 5 and catch tray 6, the delivery port of catch tray 6 is communicated with circulating slot 20, the bottom of circulating slot 20 is communicated with the water inlet of the second circulating pump 21, the outlet of the second circulating pump 21 is communicated with the shower nozzle in secondary spray-absorption device 5, and the outlet of the second circulating pump 21 is also communicated with water inlet absorption tower 1 sidewall being positioned at one-level spray-absorption device 7 lower end;
Ozone reactor 12 is also provided with between PCC regenerated flue gas import 9 and absorption tower 1, ozone reactor 12 is communicated with ozone generator 14 with temperature lowering water pipeline 13, spray oxygen grid 15 is also provided with in ozone generator 14 exit, ozone can be sprayed in ozone reactor uniformly by spray oxygen grid, and ozone starts after mixing with FCC flue gas to react, time is long, sufficient reacting, reduces and pollutes;
Also be provided with between air intlet 11 and absorption tower 1 and increase press 16, be positioned at bottom absorption tower 1 on sidewall and be also provided with the first agitator 17, the second agitator 22 is provided with bottom circulating slot 20, can make constantly to move bottom absorption tower by increase press and the first agitator, avoid particle to be deposited in bottom and cause equipment fault, second agitator also plays the effect of stirring, avoids precipitation; The bottom of circulating slot 20 also with the outlet increasing press 16.
Pass through the technical solution of the utility model like this, denitrification efficiency is high, in neat stress, aerocolloidal content is little, effectively control the secondary pollution of neat stress, and investment cost is low, floor space is little, saving operating cost, resistance is little, stable, by reducing environment temperature at 80-100 DEG C, ensuring the sufficient reaction time, reduce the discharge capacity of SOx and NOx, greatly reduce the pollution to environment, improve reaction efficiency, save time, and the particle effectively removed by spray equipment in flue gas, reduces the pollution to environment further.
Above embodiment is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, all falls within the utility model protection domain.

Claims (6)

1. a FCC regeneration flue gas desulfurization denitrification apparatus, comprise the absorption tower (1) vertically arranged, the top on described absorption tower (1) is provided with smoke stack emission mouth (2), it is characterized in that: be provided with demister successively from top to bottom in described absorption tower (1) inside, secondary spray-absorption device (5), catch tray (6) and one-level spray-absorption device (7), described one-level spray-absorption device (7) and secondary spray-absorption device (5) are by being arranged on the inner shower nozzle in absorption tower (1) and water inlet pipe composition, be positioned on absorption tower (1) sidewall in described secondary spray-absorption device (5) upper end and offer mist eliminator flushing water inlet (8), be positioned on absorption tower (1) sidewall in described secondary spray-absorption device (5) lower end and offer PCC regenerated flue gas import (9) successively, absorbing liquid import (10) and air intlet (11),
Described absorption tower (1) outside is also provided with first circulatory system and second circulatory system, described first circulatory system is made up of the first circulating pump (18) and one-level spray-absorption device (7), the water inlet of described first circulating pump (18) is communicated with the delivery port of absorption tower (1) bottom, and the delivery port of described first circulating pump (18) is communicated with preprocessor (19) with the shower nozzle in one-level spray-absorption device (7) respectively; Described second circulatory system is made up of circulating slot (20), the second circulating pump (21), secondary spray-absorption device (5) and catch tray (6), the delivery port of described catch tray (6) is communicated with circulating slot (20), the bottom of described circulating slot (20) is communicated with the water inlet of the second circulating pump (21), the outlet of described second circulating pump (21) is communicated with the shower nozzle in secondary spray-absorption device (5), and the outlet of described second circulating pump (21) is also communicated with water inlet absorption tower (1) sidewall being positioned at one-level spray-absorption device (7) lower end.
2. FCC regeneration flue gas desulfurization denitrification apparatus according to claim 1, it is characterized in that: described demister comprises the electrostatic precipitator (3) and board-like demister (4) that set gradually from top to bottom, absorption tower (1) sidewall offers and lays respectively at described electrostatic precipitator (3) upper end, mist eliminator flushing water inlet (8) between board-like demister (4) and electrostatic precipitator (3) and between secondary spray-absorption device (5) and board-like demister (4).
3. FCC regeneration flue gas desulfurization denitrification apparatus according to claim 1, it is characterized in that: between described PCC regenerated flue gas import (9) and absorption tower (1), be also provided with ozone reactor (12), described ozone reactor (12) is communicated with ozone generator (14) with temperature lowering water pipeline (13), is also provided with spray oxygen grid (15) in described ozone generator (14) exit.
4. FCC regeneration flue gas desulfurization denitrification apparatus according to claim 1, it is characterized in that: being also provided with between described air intlet (11) and absorption tower (1) increases press (16), bottom, described absorption tower (1) is positioned on sidewall and is also provided with the first agitator (17), and described circulating slot (20) bottom is provided with the second agitator (22).
5. FCC regeneration flue gas desulfurization denitrification apparatus according to claim 4, is characterized in that: the bottom of described circulating slot (20) also with the outlet increasing press (16).
6. FCC regeneration flue gas desulfurization denitrification apparatus according to claim 1, is characterized in that: the liquid in described absorbing liquid import (10) is the one in NaOH, potassium hydroxide, aqua calcis or lime stone slurry.
CN201420610743.6U 2014-10-21 2014-10-21 A kind of FCC regeneration flue gas desulfurization denitrification apparatus Active CN204170601U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105032140A (en) * 2015-07-21 2015-11-11 北京中航泰达环保科技股份有限公司 System and method for denitrating and desulfurizing sintered flue gas through low-temperature wet method
CN105148699A (en) * 2015-09-02 2015-12-16 北京国电龙源环保工程有限公司 Single-tower oxidizing desulfurization and denitration device and method
CN107281925A (en) * 2017-07-26 2017-10-24 罗厚镇 The processing system and its processing method of a kind of sulphur-containing exhaust gas
CN108514806A (en) * 2018-03-31 2018-09-11 广西金茂生物化工有限公司 A kind of flue gas desulfurization device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105032140A (en) * 2015-07-21 2015-11-11 北京中航泰达环保科技股份有限公司 System and method for denitrating and desulfurizing sintered flue gas through low-temperature wet method
CN105148699A (en) * 2015-09-02 2015-12-16 北京国电龙源环保工程有限公司 Single-tower oxidizing desulfurization and denitration device and method
CN105148699B (en) * 2015-09-02 2018-01-12 北京国电龙源环保工程有限公司 A kind of single column oxidation sweetening denitrification apparatus and its desulfurization denitration method
CN107281925A (en) * 2017-07-26 2017-10-24 罗厚镇 The processing system and its processing method of a kind of sulphur-containing exhaust gas
CN108514806A (en) * 2018-03-31 2018-09-11 广西金茂生物化工有限公司 A kind of flue gas desulfurization device and method

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