CN204865538U - Flue gas desulphurization device and flue gas integration SOx/NOx control system - Google Patents
Flue gas desulphurization device and flue gas integration SOx/NOx control system Download PDFInfo
- Publication number
- CN204865538U CN204865538U CN201520514871.5U CN201520514871U CN204865538U CN 204865538 U CN204865538 U CN 204865538U CN 201520514871 U CN201520514871 U CN 201520514871U CN 204865538 U CN204865538 U CN 204865538U
- Authority
- CN
- China
- Prior art keywords
- desulfurizing tower
- flue gas
- valve
- acid
- desulfurizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses a flue gas desulphurization device and flue gas integration SOx/NOx control system, this flue gas desulphurization device includes the desulfurizing tower, is equipped with in the desulfurizing tower to be used for loading the packing cavity that desulphurization catalyst formed the packing layer, is equipped with spray set in the top of packing cavity, the desulfurizing tower is at least two, and two at least desulfurizing towers are established ties and/or be together parallelly connected through flue of connecting rather than flue gas inlet, exhanst gas outlet and the valve that sets up on the flue, the desulfurizing tower bottom is the sour mouth of the row of being equipped with still. The utility model discloses a flue gas desulphurization device, when at least one desulfurizing tower is used for main desulfurizing tower, all the other desulfurizing towers through spray set to adsorption saturation's desulphurization catalyst spray wash with dry regeneration to realize the used repeatedly of catalyst, realize going on in succession of flue gas desulfurization, to follow the sulphuric acid recycle of packing layer elution, not produce other discarded object, waste water and waste gas, avoid the waste of resource, practice thrift the cost, have good economic benefits and environmental benefit.
Description
Technical field
The utility model belongs to fume treatment technical field, is specifically related to a kind of flue gas desulfur device, also relates to a kind of flue gas integration desulfurization denitration method simultaneously.
Background technology
China is the discharge big country of sulfur dioxide and nitrogen oxide, and total emissions amount occupies first place in the world.Sulfur dioxide forms acid rain, has direct impact to the national economic development; And acid rain produces harm to animal and human body, eyes, throat and skin is stimulated to cause inflammation.Nitrogen oxide mainly exists with the form of nitrogen dioxide among air, is also the chief component of acid rain; And nitrogen dioxide also can ozone layer depletion, become one of factor forming ozone hole.
Flue gas desulfurization refers to that from flue gas, remove oxysulfide (is mainly SO
2and SO
3) process.The general principle of flue gas desulfurization is: the oxysulfide in flue gas is in fact acid, can remove by reacting with suitable alkaline matter (desulfurizing agent) from flue gas.In flue gas desulfurization technique, divide by the kind of desulfurizing agent, following Lung biopsy can be divided into: with CaCO
3calcium method based on (lime stone), the magnesium processes based on MgO, with Na
2sO
3based on sodium method, with NH
3based on ammonia process, the organic alkaline process based on organic base.Wherein, commercialization degree is the highest and most widely used is calcium method (limestone-based process).The technique adopting calcium method to carry out wet process of FGD mainly uses lime stone (CaCO
3), the slurries such as lime (CaO) make washing agent, in desulfurizing tower, flue gas is washed, reacts with the oxysulfide in flue gas and generate calcium sulfate precipitation, thus the oxysulfide in removing flue gas.In thermal power plant, the steel mill of China, more than 90% adopts wet type lime/lime stone-gypsum method flue gas desulfurization technique flow process.Lime stone abundance, quick lime and white lime are all produced by heating by lime stone, and thus relatively cheap, sulfur removal technology cost is lower.But although limestone-based process is cheap, desulfuration efficiency is not high, desulfurization is thorough, and the materials such as the calcium sulfate of generation are difficult to process, produce a large amount of waste water and solid waste, causes secondary pollution and cause the waste of resource to environment.Therefore, people are studying better flue gas desulfurization technique and equipment always.
In prior art, CN1460033A discloses a kind of desulphurization plant and sulfur method, this desulphurization plant comprises desulfurizing tower, desulfurizing tower is used for the porous carbon materials contact by being arranged in a desulfurizing tower and carries out desulfurization to the flue gas of sulfur-containing oxide, and this porous carbon materials is at least one kind selected from activated carbon and activated carbon fiber; Desulfurization is arranged has spray equipment, and this spray equipment is arranged in the top of desulfurizing tower, is not less than the saturated with vapor value at the temperature of this flue gas of process to make water content inside be adjusted to.Its principle is: flue gas as activated carbon or activated carbon fiber contact, thus to make in porous carbon materials absorption from flue gas body contained oxysulfide as sulfur dioxide with porous carbon materials; Deposit in case being used as the porous carbon materials of catalyst, the oxygen reaction contained by oxysulfide and flue gas; The oxide produced is absorbed in water, thus forms sulfuric acid, and it is removed by from material with carbon element.The reaction equation of desulfurization is as follows:
SO
2+1/2O
2+H
2O→H
2SO
4(1)。
Adopt the fume desulphurization method initial stage desulfurization of the said equipment thorough, avoid the generation of the difficult materials such as calcium sulfate simultaneously; But along with the carrying out of flue gas desulfurization, catalyst adsorbs saturated gradually, desulfuration efficiency declines; Catalyst layer embezzles sulfur acid liquid, and resistance increases, and the passage that can flow through for flue gas diminishes, and flue gas flow rate is accelerated; Part oxysulfide may to have no chance with catalyst exposure, just by catalyst layer, to cause desulfurization not thorough; Meanwhile, too fast flue gas flow rate may be torn sulfate liquid formation sulfuric acid droplets and be taken away by flue gas, does not reach the object of flue gas desulfurization.
Summary of the invention
The purpose of this utility model is to provide a kind of flue gas desulfur device, solves in existing catalyst desulfurizing process and adsorbs the halfway problem of the saturated desulfurization caused gradually.
Second object of the present utility model is to provide a kind of system of flue gas integration desulfurization denitration.
In order to realize above object, the technical scheme that the utility model adopts is:
A kind of flue gas desulfur device, comprises the desulfurizing tower with gas approach and exhanst gas outlet, is provided with the packing cavity forming packing layer for loading desulphurization catalyst in described desulfurizing tower, and the top of the inherent packing cavity of desulfurizing tower is provided with spray equipment; Described desulfurizing tower is at least two, and at least two desulfurizing towers are connected by the flue that is connected with its gas approach, exhanst gas outlet and the valve be arranged on flue and/or are connected in parallel; Acid discharge mouth is also provided with bottom described desulfurizing tower.
Described flue gas desulfur device also comprises tank and acid tank, and described tank is connected with the spray equipment in desulfurizing tower by circulating pump; Acid discharge mouth bottom desulfurizing tower is connected with described acid tank.
Described acid tank is at least two; Each desulfurizing tower correspondence arranges an acid tank, and the acid discharge mouth of each desulfurizing tower is connected with corresponding acid tank.
Described acid tank is connected with the spray equipment in desulfurizing tower by circulating pump, and the floss hole of desulfurizing tower is connected with described tank.
Flue gas desulfur device of the present utility model, desulfurizing tower is at least two.When desulfurizing tower is two (as be respectively first, second desulfurizing tower), two cycles are a circulation: in the period 1, control valve makes two desulfurizing towers first in parallel, first desulfurizing tower is used for main desulfurization, after second desulfurizing tower carries out spray irrigation, control valve makes two desulfurizing tower series connection again, with pending flue gas or flue gas after desulfurization, drying regeneration is carried out (along flow of flue gas direction to the desulphurization catalyst in the second desulfurizing tower, before the second desulfurizing tower is connected on the first desulfurizing tower, then use pending flue gas to carry out drying regeneration and secondary desulfurization to the desulphurization catalyst in the second desulfurizing tower, after the second desulfurizing tower is connected on the first desulfurizing tower, be then use flue gas after desulfurization to carry out drying to the desulphurization catalyst in the second desulfurizing tower to regenerate), when the desulphurization catalyst absorption in the first desulfurizing tower is saturated, then the period 1 terminates, enter second round, then valve makes two desulfurizing towers first in parallel, after second desulfurizing tower carries out spray irrigation for main desulfurization, the first desulfurizing tower, control valve makes two desulfurizing tower series connection with this cycling again, realizes carrying out continuously of fume treatment.When desulfurizing tower is three (as being respectively first, second, third desulfurizing tower), three cycles are a circulation: in each cycle, control valve is in parallel with the 3rd desulfurizing tower again after making two desulfurizing towers series connection (as first, second desulfurizing tower is connected), first desulfurizing tower carries out desulphurization catalyst drying regeneration and secondary desulfurization, second desulfurizing tower is used for main desulfurization, and the 3rd desulfurizing tower carries out spray irrigation; When the desulphurization catalyst absorption in the desulfurizing tower for main desulfurization is saturated, enter next cycle; Each desulfurizing tower is according to the sequential loop of main desulfurization-spray irrigation-drying regeneration with secondary desulfurization; Cycling successively, uninterruptedly can realize flue gas desulfurization.When desulfurizing tower is more than three, can arrange as required and the quantity and the loop condition that adjust the desulfurizing tower being in each state, plan as a whole to regulate and management, make that desulfuration efficiency is high, operating cost is low.
Flue gas desulfur device of the present utility model, at least two desulfurizing tower serial or parallel connections are made by flue and valve, when at least one desulfurizing tower is used for main desulfurizing tower, all the other desulfurizing towers carry out spray irrigation by spray equipment to the saturated desulphurization catalyst of absorption and regenerate with dry, thus realize reusing of catalyst, realize carrying out continuously of flue gas desulfurization; Single unit system reduces relative to the obvious volume of existing desulfurizer, reduces initial investment cost; Retrieval of sulfuric acid from packing layer wash-out is utilized, does not produce other discarded object, waste water and waste gas, avoid the waste of resource, cost-saving, there is good economic benefit and environmental benefit.
Further, each desulfurizing tower correspondence arranges an acid tank, and the acid solution of each desulfurizing tower wash-out enters in corresponding acid tank, and the acid solution of corresponding concentration can be selected as required to carry out spray irrigation to corresponding desulfurizing tower.Preferably, first select the larger dilute sulfuric acid of relative concentration to rinse, then rinse with the dilute sulfuric acid that concentration is less, finally carry out flushing with clear water and complete whole spray process; The time of spray irrigation can be determined according to actual production technique, general, is not substantially limited containing acid with eluting liquid.
Must meet with acid solution contact portion anticorrosion in described desulfurizer and resist in sweetening process and spray process acid solution to the situation of equipment corrosion.
A kind of flue gas integration desulfurization denitration system, comprise above-mentioned flue gas desulfur device, the downstream of described flue gas desulfur device is also provided with the denitrating tower with gas approach and exhanst gas outlet, is provided with the packing cavity forming packing layer for loading denitrating catalyst in denitrating tower; The exhanst gas outlet of described desulfurizing tower is connected by pipeline with the gas approach of denitrating tower, and described pipeline is provided with denitrfying agent entrance.
Flue gas integration desulfurization denitration system of the present utility model, is the denitrating tower of connecting below at above-mentioned desulfurizer, makes flue gas complete desulphurization and denitration process successively, achieve the operation of flue gas integration desulfurization denitration, equipment is simple, and operating cost is low, be easy to Automated condtrol, be applicable to applying.
Accompanying drawing explanation
Fig. 1 is the structural representation of the flue gas desulfur device of embodiment 1;
Fig. 2 is the structural representation of the flue gas integration desulfurization denitration system of embodiment 2.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is further described.
Embodiment 1
The flue gas desulfur device of the present embodiment, as shown in Figure 1, comprises three desulfurizing towers, is respectively the first desulfurizing tower 3-1, the second desulfurizing tower 3-2, the 3rd desulfurizing tower 3-3; Below described first desulfurizing tower 3-1, there is gas approach, top has exhanst gas outlet, the packing cavity 15 forming packing layer for loading desulphurization catalyst is provided with in first desulfurizing tower 3-1, the top of the inherent packing cavity 15 of the first desulfurizing tower 3-1 is provided with spray equipment, is also provided with acid discharge mouth bottom the first desulfurizing tower 3-1; The structure of the second desulfurizing tower 3-2, the 3rd desulfurizing tower 3-3 is with the first desulfurizing tower 3-1;
First, second, 3rd desulfurizing tower by with its gas approach, the flue that exhanst gas outlet connects and the valve be arranged on flue are connected and/or are connected in parallel, be specially: first, second, the gas approach of the 3rd desulfurizing tower is connected with air inlet flue 16 respectively, air inlet flue 16 is provided with valve 14-5 at the gas approach place near the first desulfurizing tower 3-1, valve 14-3 is provided with at the gas approach place near the second desulfurizing tower 3-2, valve 14-1 is provided with at the gas approach place near the 3rd desulfurizing tower 3-3, air inlet flue 16 is also provided with the pressure fan 1 for driving flow of flue gas, the exhanst gas outlet of first, second, third desulfurizing tower is connected with exhaust uptake 7 respectively, and exhaust uptake 7 is provided with valve 5-2 at the smoke outlet near the first desulfurizing tower 3-1, is provided with valve 5-4 at the smoke outlet near the second desulfurizing tower 3-2, is provided with valve 5-6 at the smoke outlet near the 3rd desulfurizing tower 3-3, also comprise the cycle flue 17 with circulating fan 2, one end of cycle flue 17 is connected with the gas approach of first, second, third desulfurizing tower respectively, and the other end is connected with the exhanst gas outlet of first, second, third desulfurizing tower respectively, cycle flue is provided with valve 14-6 at the gas approach place near the first desulfurizing tower 3-1, is provided with valve 14-4 at the gas approach place near the second desulfurizing tower 3-2, is provided with valve 14-2 at the gas approach place near the 3rd desulfurizing tower 3-3, is provided with valve 5-1 at the smoke outlet near the first desulfurizing tower 3-1, is provided with valve 5-3 at the smoke outlet near the second desulfurizing tower 3-2, is provided with valve 5-5 at the smoke outlet near the 3rd desulfurizing tower 3-3,
Described flue gas desulfur device also comprises a tank 13 and three acid tanks, and three acid tanks are corresponding with first, second, third desulfurizing tower respectively, is respectively the first acid tank 18-1, the second acid tank 18-2 and the 3rd acid tank 18-3, also comprise feed liquid pipeline 6 and acid discharge pipeline 19, one end of feed liquid pipeline 6 is respectively with first, second, spray equipment in 3rd desulfurizing tower is connected, the other end is respectively with first, second, 3rd acid tank is connected with tank, feed liquid pipeline 6 is provided with valve 4-1 at the spray equipment place in the first desulfurizing tower 3-1, valve 4-2 is provided with at the spray equipment place in the second desulfurizing tower 3-2, valve 4-3 is provided with at the spray equipment place in the 3rd desulfurizing tower 3-3, valve 12-7 is being provided with near the first acid tank 18-1 place, valve 12-5 is being provided with near the second acid tank 18-2 place, valve 12-3 is being provided with near the 3rd acid tank 18-3 place, valve 12-1 is being provided with near tank place, described feed liquid pipeline 16 is also provided with solution feed pump 11, one end of acid discharge pipeline 19 is connected with the acid discharge mouth bottom first, second, third desulfurizing tower respectively, the other end is connected with tank 13 with first, second, third acid tank respectively, and acid discharge pipeline 19 is being provided with valve 12-8, is being provided with valve 12-6, is being provided with valve 12-4, is being provided with valve 12-2 near tank 13 place near the 3rd acid tank 18-3 place near the second acid tank 18-2 place near the first acid tank 18-1 place.
The fume desulphurization method of the present embodiment, comprise the packing layer that pending flue gas is formed by desulphurization catalyst and carry out desulfurization, desulfurization product is adsorbed in packing layer with the form of sulfuric acid, obtains flue gas after desulfurization; Packing layer is sprayed to the sulfuric acid desorption that packing layer is adsorbed with water or dilute sulfuric acid; Carrying out drying with pending flue gas or flue gas after desulfurization to the desulphurization catalyst after sulfuric acid desorption makes desulphurization catalyst regenerate, and the desulphurization catalyst after regeneration can continue on for flue gas desulfurization.Wherein said desulphurization catalyst is the middle microporous activated carbon that CN103585868A records; The temperature of pending flue gas is 100 ~ 180 DEG C.
The flue gas desulfur device of the present embodiment is adopted to realize above-mentioned fume desulphurization method, when described flue gas desulfur device runs, a circulation comprises three cycles, in each cycle, a desulfurizing tower carries out desulphurization catalyst drying regeneration and secondary desulfurization, a desulfurizing tower carries out main desulfurization, and a desulfurizing tower carries out liquid and sprays the sulfuric acid desorption that desulphurization catalyst is adsorbed; Each desulfurizing tower circulates successively according to the order of main desulfurization, spray irrigation, dry regeneration and secondary desulfurization, is specially:
Pending flue gas sends into air inlet flue 16 by pressure fan 1, within the period 1, gas circuit valve opening door 14-5, valve 5-1, valve 14-4, valve 5-4, fluid path valve opening door 4-3, select valve opening door 12-1, valve 12-2 or valve 12-3, valve 12-4 according to the change of discharge acid strength, all the other valves are in closed condition, pending flue gas enters the first desulfurizing tower 3-1 through valve 14-5, through packing layer carry out desulphurization catalyst drying regeneration and secondary desulfurization (mainly for the packing layer through spray irrigation in a upper cycle period, as device is initially started shooting, omit this part), then enter cycle flue 17, enter the second desulfurizing tower 3-2 through valve 5-1, circulating fan 2, valve 14-4, carry out main desulfurization through packing layer, then enter exhaust uptake 7 through valve 5-4, water or dilute sulfuric acid, under the effect of solution feed pump 11, enter the spray equipment in the 3rd desulfurizing tower 3-3 through liquid feeding pipeline 6, spray the packing layer of the 3rd desulfurizing tower 3-3, the sulfuric acid desorption that desulphurization catalyst is adsorbed, discharge from the acid discharge mouth of sulfuric acid bottom the 3rd desulfurizing tower 3-3 of packing layer desorption, enter acid discharge pipeline, valve opening door 12-1 is selected according to acid strength change, valve 12-2 or valve 12-3, valve 12-4, make acid solution enter tank 13 or the 3rd acid tank 18-3 to carry out circulated sprinkling and (enter tank when acid strength is low and carry out circulated sprinkling, enter corresponding acid tank during acid strength height and carry out circulated sprinkling, acid strength is too high when not being suitable for spray, enter sulfuric acid slagging-off sedimentation basin for reclaiming dilute sulfuric acid), period 1 moves to for the desulphurization catalyst absorption in the second desulfurizing tower 3-2 of main desulfurization saturated,
Second round is entered after desulphurization catalyst absorption in second desulfurizing tower 3-2 is saturated, in second round, gas circuit valve opening door 14-1, valve 5-5, valve 14-6, valve 5-2, fluid path valve opening door 4-2, select valve opening door 12-1, valve 12-2 or valve 12-5, valve 12-6 according to the change of discharge acid strength, all the other valves are in closed condition, pending flue gas enters the 3rd desulfurizing tower 3-3 through valve 14-1, desulphurization catalyst drying regeneration and secondary desulfurization is carried out through packing layer, then cycle flue 17 is entered, the first desulfurizing tower 3-1 is entered through valve 5-5, circulating fan 2, valve 14-6, carry out main desulfurization through packing layer, then enter exhaust uptake 7 through valve 5-2, water or dilute sulfuric acid, under the effect of solution feed pump 11, enter the spray equipment in the second desulfurizing tower 3-2 through liquid feeding pipeline 6, spray the packing layer of the second desulfurizing tower 3-2, the sulfuric acid desorption that desulphurization catalyst is adsorbed, discharge from the acid discharge mouth of sulfuric acid bottom the second desulfurizing tower 3-2 of packing layer desorption, enter acid discharge pipeline, valve opening door 12-1 is selected according to acid strength change, valve 12-2 or valve 12-5, valve 12-6, make acid solution enter tank 13 or the second acid tank 18-2 to carry out circulated sprinkling and (enter tank when acid strength is low and carry out circulated sprinkling, enter corresponding acid tank during acid strength height and carry out circulated sprinkling, acid strength is too high when not being suitable for spray, enter sulfuric acid slagging-off sedimentation basin for reclaiming dilute sulfuric acid), move to second round for the desulphurization catalyst absorption in the 3rd desulfurizing tower 3-3 of main desulfurization saturated,
The period 3 is entered after desulphurization catalyst absorption in 3rd desulfurizing tower 3-3 is saturated, in period 3, gas circuit valve opening door 14-3, valve 5-3, valve 14-2, valve 5-6, fluid path valve opening door 4-1, select valve opening door 12-1, valve 12-2 or valve 12-7, valve 12-8 according to the change of discharge acid strength, all the other valves are in closed condition, pending flue gas enters the second desulfurizing tower 3-2 through valve 14-3, desulphurization catalyst drying regeneration and secondary desulfurization is carried out through packing layer, then cycle flue 17 is entered, the 3rd desulfurizing tower 3-3 is entered through valve 5-3, circulating fan 2, valve 14-2, carry out main desulfurization through packing layer, then enter exhaust uptake 7 through valve 5-6, water or dilute sulfuric acid, under the effect of solution feed pump 11, enter the spray equipment in the first desulfurizing tower 3-1 through liquid feeding pipeline 6, spray the packing layer of the first desulfurizing tower 3-1, the sulfuric acid desorption that desulphurization catalyst is adsorbed, discharge from the acid discharge mouth of sulfuric acid bottom the first desulfurizing tower 3-1 of packing layer desorption, enter acid discharge pipeline, valve opening door 12-1 is selected according to acid strength change, valve 12-2 or valve 12-7, valve 12-8, make acid solution enter tank 13 or the first acid tank 18-1 to carry out circulated sprinkling and (enter tank when acid strength is low and carry out circulated sprinkling, enter corresponding acid tank during acid strength height and carry out circulated sprinkling, acid strength is too high when not being suitable for spray, enter sulfuric acid slagging-off sedimentation basin for reclaiming dilute sulfuric acid), period 3 moves to for the desulphurization catalyst absorption in the second desulfurizing tower 3-2 of main desulfurization saturated.
After the period 3 terminates, repeat the period 1, three loop cycle like this are carried out, and reach the effect of lasting desulfurization.In spray process, first select the larger dilute sulfuric acid of relative concentration to rinse, then rinse with the dilute sulfuric acid that concentration is less, finally carry out flushing with clear water and complete whole spray process.
Embodiment 2
The flue gas integration desulfurization denitration system of the present embodiment, as shown in Figure 2, comprise the flue gas desulfur device shown in embodiment 1, the downstream of described flue gas desulfur device is also provided with denitrating tower 8, the below of denitrating tower 8 is provided with gas approach, top is provided with exhanst gas outlet, is provided with the packing cavity 9 forming packing layer for loading denitrating catalyst in denitrating tower 8; The gas approach of denitrating tower 8 is connected with the exhaust uptake 7 in flue gas desulfur device, described exhaust uptake 7 is also provided with the denitrfying agent entrance for being added by denitrfying agent in flue gas; The exhanst gas outlet of denitrating tower 8 is connected with the gas approach of chimney 10.
The flue gas integration desulfurization denitration method of the present embodiment, comprise the packing layer that pending flue gas is formed by desulphurization catalyst and carry out desulfurization, desulfurization product is adsorbed in packing layer with the form of sulfuric acid, obtains flue gas after desulfurization; Packing layer is sprayed to the sulfuric acid desorption that packing layer is adsorbed with water or dilute sulfuric acid; Carrying out drying with pending flue gas or flue gas after desulfurization to the desulphurization catalyst after sulfuric acid desorption makes desulphurization catalyst regenerate, and the desulphurization catalyst after regeneration can continue on for flue gas desulfurization; Flue gas after desulfurization is mixed into denitrfying agent, under denitrating catalyst effect, carries out denitration process.Wherein said desulphurization catalyst is the middle microporous activated carbon that CN103585868A records; The temperature of pending flue gas is 100 ~ 180 DEG C; Described denitrfying agent is ammonia, and denitrating catalyst is the middle microporous activated carbon that CN103585868A records.
The flue gas integration desulfurization denitration system of the present embodiment is adopted to realize above-mentioned flue gas integration desulfurization denitration method, in described flue gas integration desulfurization denitration system, the running of flue gas desulfur device is with embodiment 1, in each cycle, flue gas after desulfurization enters exhaust uptake 7, enter denitrating tower after mixing with the denitrfying agent added through denitrfying agent entrance, the packing layer that the denitrating catalyst in denitrating tower is formed carries out denitration, and the flue gas after denitration is disposed to air through chimney 10.
In other embodiments of the present utility model, in flue gas desulfur device, the number of desulfurizing tower can also be more than two or three: when desulfurizing tower is two (as be respectively first, second desulfurizing tower), two cycles are a circulation: in the period 1, control valve makes two desulfurizing towers first in parallel, first desulfurizing tower is used for main desulfurization, after second desulfurizing tower carries out spray irrigation, control valve makes two desulfurizing tower series connection again, with pending flue gas or flue gas after desulfurization, drying regeneration is carried out (along flow of flue gas direction to the desulphurization catalyst in the second desulfurizing tower, before the second desulfurizing tower is connected on the first desulfurizing tower, then use pending flue gas to carry out drying regeneration and secondary desulfurization to the desulphurization catalyst in the second desulfurizing tower, after the second desulfurizing tower is connected on the first desulfurizing tower, be then use flue gas after desulfurization to carry out drying to the desulphurization catalyst in the second desulfurizing tower to regenerate), when the desulphurization catalyst absorption in the first desulfurizing tower is saturated, then the period 1 terminates, enter second round, then valve makes two desulfurizing towers first in parallel, after second desulfurizing tower carries out spray irrigation for main desulfurization, the first desulfurizing tower, control valve makes two desulfurizing tower series connection with this cycling again, realizes carrying out continuously of fume treatment.When desulfurizing tower is more than three, can arrange as required and the quantity and the loop condition that adjust the desulfurizing tower being in each state, plan as a whole to regulate and management, make that desulfuration efficiency is high, operating cost is low.
Claims (5)
1. a flue gas desulfur device, comprise the desulfurizing tower with gas approach and exhanst gas outlet, the packing cavity forming packing layer for loading desulphurization catalyst is provided with in described desulfurizing tower, the top of the inherent packing cavity of desulfurizing tower is provided with spray equipment, it is characterized in that: described desulfurizing tower is at least two, at least two desulfurizing towers are connected by the flue that is connected with its gas approach, exhanst gas outlet and the valve be arranged on flue and/or are connected in parallel; Acid discharge mouth is also provided with bottom described desulfurizing tower.
2. flue gas desulfur device according to claim 1, is characterized in that: also comprise tank and acid tank, and described tank is connected with the spray equipment in desulfurizing tower by circulating pump; Acid discharge mouth bottom desulfurizing tower is connected with described acid tank.
3. flue gas desulfur device according to claim 2, is characterized in that: described acid tank is at least two; Each desulfurizing tower correspondence arranges an acid tank, and the acid discharge mouth of each desulfurizing tower is connected with corresponding acid tank.
4. flue gas desulfur device according to claim 3, is characterized in that: described acid tank is connected with the spray equipment in desulfurizing tower by circulating pump, and the floss hole of desulfurizing tower is connected with described tank.
5. a flue gas integration desulfurization denitration system, it is characterized in that: comprise the flue gas desulfur device described in any one of claim 1-4, the downstream of described flue gas desulfur device is also provided with the denitrating tower with gas approach and exhanst gas outlet, is provided with the packing cavity forming packing layer for loading denitrating catalyst in denitrating tower; The exhanst gas outlet of described desulfurizing tower is connected by pipeline with the gas approach of denitrating tower, and described pipeline is provided with denitrfying agent entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514871.5U CN204865538U (en) | 2015-07-15 | 2015-07-15 | Flue gas desulphurization device and flue gas integration SOx/NOx control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520514871.5U CN204865538U (en) | 2015-07-15 | 2015-07-15 | Flue gas desulphurization device and flue gas integration SOx/NOx control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204865538U true CN204865538U (en) | 2015-12-16 |
Family
ID=54809974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520514871.5U Expired - Fee Related CN204865538U (en) | 2015-07-15 | 2015-07-15 | Flue gas desulphurization device and flue gas integration SOx/NOx control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204865538U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959034A (en) * | 2015-07-15 | 2015-10-07 | 张博 | Flue gas desulfurization method, flue gas desulfurization device as well as integrated flue gas desulfurization and denitration system and method |
| CN107905875A (en) * | 2017-12-18 | 2018-04-13 | 北京联飞翔科技股份有限公司 | A kind of purification of nitrogen oxides device and method |
| CN114713005A (en) * | 2022-03-08 | 2022-07-08 | 佛山赛因迪环保科技有限公司 | Dry desulfurization system and method for improving utilization rate of desulfurizer |
-
2015
- 2015-07-15 CN CN201520514871.5U patent/CN204865538U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959034A (en) * | 2015-07-15 | 2015-10-07 | 张博 | Flue gas desulfurization method, flue gas desulfurization device as well as integrated flue gas desulfurization and denitration system and method |
| CN107905875A (en) * | 2017-12-18 | 2018-04-13 | 北京联飞翔科技股份有限公司 | A kind of purification of nitrogen oxides device and method |
| CN114713005A (en) * | 2022-03-08 | 2022-07-08 | 佛山赛因迪环保科技有限公司 | Dry desulfurization system and method for improving utilization rate of desulfurizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104959034A (en) | Flue gas desulfurization method, flue gas desulfurization device as well as integrated flue gas desulfurization and denitration system and method | |
| CN201807279U (en) | High-efficiency flue gas dust-removal desulfurization device | |
| CN205019964U (en) | SOx/NOx control device system is united to flue gas low temperature | |
| CN104906937A (en) | Flue gas desulfurization and denitrification device and method of coal fired boiler | |
| CN102489132A (en) | Novel dual-alkali desulfurization method for removal of sulfur dioxide from flue gas and generation of elemental sulfur as byproduct | |
| CN204865538U (en) | Flue gas desulphurization device and flue gas integration SOx/NOx control system | |
| CN104353356A (en) | Pelletizing flue gas cleaning and adsorbing tower of travelling grate machine | |
| CN206652377U (en) | Ammonia fertilizer method desulphurization system | |
| CN104524935B (en) | Single tower type double-cycle spray composite absorption device and method | |
| CN106362573A (en) | Desulfurizer and desulphurising process for mixed gas containing sulfides in diversified forms | |
| CN202161921U (en) | Ammonia regenerative desulphurization device | |
| CN1194176A (en) | New technology for absorbing and eliminating sulfur dioxide in smoke chemically | |
| CN105032173A (en) | Device and process of ammonia-soda-process combined desulfurization and denitrification | |
| CN204247052U (en) | Single tower type double-cycle spray composite absorption device | |
| CN201214046Y (en) | Ammonia process desulphurizing device for reducing ammonia escape | |
| CN104941420A (en) | Flue gas desulfurization comprehensive treatment system and method | |
| CN204261560U (en) | A kind of belt type roasting machine pelletizing gas cleaning adsorption tower | |
| CN208943815U (en) | A kind of desulphurization plant reducing ammonia and doctor solution escape | |
| CN110665336A (en) | Liquid-phase flue gas denitration and absorption liquid regeneration integrated method and device | |
| CN208212881U (en) | A kind of high-efficiency and low-cost exhaust gas advanced treatment device | |
| CN105642098B (en) | A kind of desulfurization denitration method | |
| CN110180355A (en) | A kind of wet-dry change combined desulfurization and denitration running gear and method | |
| CN203389527U (en) | Low-temperature multi-effect flue gas treatment device | |
| CN101862575A (en) | Method for reducing SO2 content in exhaust gas in production of sulfuric acid | |
| CN109954388A (en) | A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190715 |