CN205340539U - High -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system - Google Patents
High -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system Download PDFInfo
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- CN205340539U CN205340539U CN201620038444.9U CN201620038444U CN205340539U CN 205340539 U CN205340539 U CN 205340539U CN 201620038444 U CN201620038444 U CN 201620038444U CN 205340539 U CN205340539 U CN 205340539U
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Abstract
The utility model relates to a high -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system, it includes that integrative tower (1), filtrating circulation system (2), the water of giving a dinner of welcome spray circulation system (3), the defogging sprays liquid feed system (4), aeration systems (5), lime water preparation system (6) and filtrating preparation system (7) its characterized in that. The utility model discloses high -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system has the construction, the running cost is lower, and SOx/NOx control is effectual, uses the comparatively simple and convenient advantage of control.
Description
Technical field
This utility model relates to a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system.
Background technology
Sulfur dioxide and nitrogen oxides are to affect bigger gaseous contaminant in atmosphere pollution, and human body, environment and ecosystem are had high risks.Along with the problem of the increasingly stringent of environmental requirement, sulfur dioxide and discharged nitrous oxides increasingly receives publicity.Sulfur dioxide and nitrogen oxides are derived mainly from the combustion process of the fossil fuel such as coal, oil, and the fume emission of the roasting of Ore, smelting process.Wherein the smoke evacuation of various burning boilers particularly power plant boiler has the features such as concentration is low, exhaust gas volumn is big, floating dust is many and is difficult to administer.In conventional art, discharge sulfur dioxide in flue gas and purification of nitrogen oxides technology are usually by separately performed to desulfurization and denitration, which results in the defects such as the complexity of discharge flue gas purification system is huge, initial outlay is big, operating cost is high, seriously constrain the actual enforcement of discharge flue gas desulfurization and denitrification.
Desulfurization technology mainly half-dried is dispelled based on limestone gypsum wet, wet-type ammonia, rotating spraying, in-furnace calcium spraying afterbody heats activation, sea water desulfuration, electron-beam desulfurization, flue gas circulating fluidized bed desulfurization etc., wherein limestone-based process is the tail flue gas desulfurization technology being most widely used in the world now, it major problem is that the dissolubility of absorbent (Calx or limestone) is little, utilization rate is low, and waste residue amount is big.
The main selective catalytic reduction technique (SCR) of gas denitrifying technology, SNCR technology (SNCR), electronic beam method, impulse electric corona method, complex absorption process and urea absorptive method etc., gas denitrifying technology comparatively ripe in running at present is mainly SCR technology, SNCR technology and SNCR/SCR combination technique, but there is initial investment costly in SCR method, operating temperature range is narrow, and there is NH_3 leakage, the shortcomings such as N2O, and catalyst easy in inactivation can be generated；And SNCR denitration is inefficient, and NH_3 leakage is many, easily causes secondary pollution.Countries in the world in recent years, especially industrially developed country has carried out the research and development of simultaneous SO_2 and NO removal technology all in succession, and carried out certain commercial Application, abroad there are electron beam irradiation method, impulse electric corona method, active carbon adsorption, NOxSO technique and Pahlman flue gas desulfurization and denitration technique etc. at present, but China still lacks this type of technology at present or is not suitable with because of energy consumption and high cost.
Summary of the invention
The purpose of this utility model is in that to overcome above-mentioned deficiency, it is provided that one is built, operating cost is relatively low, and desulfurization off sulfide effect is good, uses and controls relatively simple high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system.
The purpose of this utility model is achieved in that
A kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system, it is characterised in that it includes integrated tower, filtrate cycle system, Water spray blood circulation of giving a dinner of welcome, except mist spray liquid supply system, aerating system, lime white preparation system and filtrate preparation system；
Described integrated tower is disposed with integrated tower reservoir bottom-up, flue access port, filtrate spray equipment, gas-liquid separation device, give a dinner of welcome water spray system, demister and air vent, it is connected to filtrate cycle system between described integrated tower reservoir and filtrate spray equipment, described gas-liquid separation device and give a dinner of welcome and be connected to Water spray blood circulation of giving a dinner of welcome between water spray system, described demister is connected with the external mist spray liquid supply system that removes, described integrated tower reservoir is circumscribed with aerating system, the middle filtrate that aerating system is formed, the precipitation slag that the lime white that lime white preparation system is formed and Water spray blood circulation of giving a dinner of welcome are discharged feeds filtrate preparation system and prepares filtrate.
Described gas-liquid separation device includes being connected in one the water conservancy diversion gripper shoe of inner wall of tower, described water conservancy diversion gripper shoe is diagonally disposed, described water conservancy diversion gripper shoe is provided with the through hole that array is arranged, through hole is provided with mozzle, the over top of described mozzle is provided with blast cap, being connected by multiple dowels between described blast cap and mozzle, the sidewall at the integrated tower of water conservancy diversion gripper shoe low side offers washes dust-water discharging port.
Described filtrate cycle system includes the many filtrate cycle pipelines being arranged in parallel, one end of many filtrate cycle pipelines is integrally connected multiple filtrate cycle pipeline access ports of the sidewall of tower reservoir respectively, and the other end of many filtrate cycle pipelines connects the inlet of the filtrate shower of filtrate spray equipment respectively；Filtrate cycle pipeline is disposed with filtrate cycle duct attenuation check-valves and filtrate cycle pipe circle pump from the one end near one end of filtrate cycle pipeline access port to the inlet of filtrate shower, described filtrate cycle pipe circle pump is respectively connected with filtrate cycle pipe flushing water inlet pipe road to the filtrate cycle pipeline between the inlet of filtrate shower, described filtrate cycle pipe circle pump is respectively connected with filtrate cycle pipe flushing water discharge pipe road to the filtrate cycle pipeline between filtrate cycle pipeline access port, filtrate cycle pipe flushing water discharge pipe road is connected to drain, filtrate cycle pipeline between described filtrate cycle duct attenuation check-valves and filtrate cycle pipe circle pump is connected to filtrate input channel.
Described Water spray blood circulation of giving a dinner of welcome includes being connected to give a dinner of welcome the Water spray liquid circulating line of giving a dinner of welcome of inlet of water sprayer tube from the dust-water discharging port of washing bottom gas-liquid separation device, described in give a dinner of welcome Water spray liquid circulating line be disposed with water pot of giving a dinner of welcome, buffer tank and Water spray liquid circulating line circulating pump of giving a dinner of welcome from the one end near one end to the inlet of the water sprayer tube of giving a dinner of welcome near water spray system of giving a dinner of welcome of washing dust-water discharging port.
Described include technique water pot except mist spray liquid supply system, the fresh water (FW) input port of described fresh water (FW) tank top connects the external world, first discharge outlet of described fresh water (FW) pot bottom by being connected to the inlet removing spray painting shower pipe of demister except mist spray liquid input channel, described except mist spray liquid input channel is provided with except mist spray fluid supply pump, second discharge outlet of described fresh water (FW) pot bottom is connected to the entrance of integrated tower by technique water pot discharge line, and described technique water pot discharge line is provided with emergent cooling pump.
Described aerating system includes Aeration tank and aeration tank, it is connected to Aeration tank pipeline between the integrated tower reservoir of described Aeration tank and integrated tower, described Aeration tank pipeline is provided with reservoir excavationg pump, Aeration tank pipeline between reservoir excavationg pump to Aeration tank introduces flushing water, being connected to aeration tank pipeline between described aeration tank and integrated tower reservoir, aeration tank pipeline also accesses drain.
Described filtrate preparation system includes Aeration tank filtrate access conduit, lime white access conduit, water pot discharge line of giving a dinner of welcome, reduction pond, reduction pond discharge line, reservoir, medicament prepare pond, medicament discharge line and reservoir discharge line；Wherein the front end of Aeration tank filtrate access conduit connects the Aeration tank of aerating system, reduction pond is accessed in the rear end of Aeration tank filtrate access conduit, Aeration tank filtrate access conduit is disposed with Aeration tank Siphon pot from front to back, first feeding of filter press pump and the first pressure filter, the front end of lime white access conduit connects the lime white discharge line of lime white preparation system, reduction pond is accessed in the rear end of lime white discharge line, the give a dinner of welcome front end of water pot discharge line connects the water pot of giving a dinner of welcome of Water spray blood circulation of giving a dinner of welcome, give a dinner of welcome water pot discharge line rear end access reduction pond, the front end of reduction pond discharge line connects reduction pond, the rear end of reduction pond discharge line connects reservoir, reduction pond discharge line is disposed with the second feeding of filter press pump and the second pressure filter from front to back, the front end of medicament discharge line connects medicament and prepares pond, the rear end of medicament discharge line connects reservoir, medicament discharge line is disposed with medicament Siphon pot and compound pump from front to back, the front end of reservoir discharge line connects reservoir, the rear end of reservoir discharge line is connected to the filtrate input channel of filtrate cycle system, reservoir discharge line is disposed with reservoir Siphon pot and filtrate delivery pump from front to back.
The sidewall of described integrated tower reservoir accesses a disturbance pipeline, described disturbance pipeline has been arranged in parallel two disturbance pumps, the outer termination flushing water of disturbance pipeline.
It is provided with liquidometer and densimeter in described integrated tower reservoir.
Compared with prior art, the beneficial effects of the utility model are:
1, nitric efficiency is high
To flue-gas temperature without particular/special requirement, nitric efficiency up to 85-95% owing to have employed the oxide reduction techniques of advanced person and synchronously completing with desulfurization.So operating cost is low, this is that " SCR " and " SNCR " is inaccessiable at present.The whole closed cycle of desulphurization denitration water, and it is configured with middle water dechlorination apparatus not to efflux wastewater, non-secondary pollution.In flue gas desulfurization and denitrification tower, utilizing the inverse forward spray process of multiple tracks, spray in flue gas by absorption liquid, under the drive of high velocity air, absorb liquid and be blown to vaporific, specific surface area is big, makes gas-to-liquid contact more abundant.Ensure that stablizing of denitrification efficiency.
2, desulphurization denitration is dust removal integrated
Owing to the circulation fluid activity after oxidoreduction is good, so the infiltration rate of SO2 is fast and efficiency is high.Showing that desulfuration efficiency is up to 99.1% according to result of the test, lime-gypsum method and limestone-gypsum method institute are inaccessiable.Owing to tower body top is mounted with water washing dedust device.So substantially increasing the efficiency of dust collection of tower body.General wet type void tower spray technique efficiency of dust collection is typically in 60-80% wet electrostatic also less than 90%, and the concentration of emission of the particulate matter after desulfurization is also dropped to below 10mg/Nm3 by our wet type water washing dedust technology dedusting technology up to 98.5%, reach minimum discharge standard.
3, small investment, failure rate is low
In the wet static dedusting technology of application at present, investment is big.And operating cost is high, power consumption is big.And the problem that there is fluctuation of service.And our wet dust collection technology is clear water due to what circulate, and closed cycle, so failure rate is low, effect stability.System can ensure that long-term normal table runs, and maintenance is very little.Desulphurization denitration tower is without the parts easily causing fouling, and adopts ammonia alkali liquid as absorbing liquid, effectively prevent the blocking of nozzle, is absent from the problem such as fouling and blocking.The normal operation of overhaul of the equipments not influential system, system normal operation rate more than 98%.Operating cost is low.In tradition desulphurization denitration operating cost, desulfurization denitrification agent expense accounts for larger proportion, and native system uses ammonium sulfate to do ammonia source and recycling, does not consume in theory, and actual cycle is Calx and minimal amount of ammonia and catalyst, so operating cost is relatively low.
Therefore to have construction, operating cost relatively low for this utility model high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system, and desulfurization off sulfide effect is good, uses and controls relatively simple advantage.
Accompanying drawing explanation
Fig. 1 is high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system schematic diagram.
Fig. 2 is the partial enlarged drawing in Fig. 1.
Fig. 3 is integrated the structural representation of tower.
Fig. 4 is the partial enlarged drawing in Fig. 3.
Fig. 5 is the top view of water conservancy diversion gripper shoe.
Fig. 6 is the structural representation of filtrate cycle system.
Fig. 7 is the structural representation of Water spray blood circulation of giving a dinner of welcome.
Fig. 8 is the structural representation except mist spray liquid supply system.
Fig. 9 is the structural representation of aerating system.
Figure 10 is the structural representation of lime white preparation system.
Figure 11 is the connection diagram of filtrate preparation system and other system.
Figure 12 is the structural representation of filtrate preparation system.
Wherein:
Integrated tower 1, filtrate cycle system 2, Water spray blood circulation 3 of giving a dinner of welcome, except mist spray liquid supply system 4, aerating system 5, lime white preparation system 6, filtrate preparation system 7, accident slurry reclaiming system 8
Integrated tower reservoir 1.1, filtrate cycle pipeline access port 1.1.1, filter screen 1.1.2, disturbance pipeline 1.1.3, disturbance pump 1.1.4, flue access port 1.2, flue 1.2.1, filtrate spray equipment 1.3, filtrate shower 1.3.1, gas-liquid separation device 1.4, water conservancy diversion gripper shoe 1.4.1, through hole 1.4.2, mozzle 1.4.3, blast cap 1.4.4, dowel 1.4.5, wash dust-water discharging port 1.4.6, give a dinner of welcome water spray system 1.5, give a dinner of welcome water sprayer tube 1.5.1, demister 1.6, board-like demister 1.6.1, except spray painting shower pipe 1.6.2, air vent 1.7
Filtrate cycle pipeline 2.1, filtrate cycle pipe circle pump 2.2, filtrate cycle pipe flushing water inlet pipe road 2.3, filtrate cycle pipe flushing water inlet pipe road damping check valve 2.4, filtrate cycle pipe flushing water discharge pipe road 2.5, filtrate cycle pipe flushing water discharge pipe road damping check valve 2.6, filtrate input channel 2.7, filtrate cycle duct attenuation check-valves 2.8
Give a dinner of welcome Water spray liquid circulating line 3.1, water pot 3.2 of giving a dinner of welcome, buffer tank 3.3, Water spray liquid circulating line circulating pump 3.4 of giving a dinner of welcome
Technique water pot 4.1, except mist spray liquid input channel 4.2, except mist spray fluid supply pump 4.3, technique water pot discharge line 4.4, emergent cooling pump 4.5
Aeration tank 5.1, Aeration tank pipeline 5.2, reservoir excavationg pump 5.3, aeration tank 5.4, aeration tank pipeline 5.5, Aeration tank oxidation tube 5.6, oxidation fan 5.7
Lime white prepares pond 6.1, feed bin 6.2, lime white discharge line 6.3, lime white Siphon pot 6.4, lime white excavationg pump 6.5
Aeration tank filtrate access conduit 7.1, Aeration tank Siphon pot 7.1.1, first feeding of filter press pump 7.1.2, first pressure filter 7.1.3, lime white access conduit 7.2, give a dinner of welcome water pot discharge line 7.3, reduction pond 7.4, reduction pond discharge line 7.5, second feeding of filter press pump 7.5.1, second pressure filter 7.5.2, reduction pond Siphon pot 7.5.3, reservoir 7.6, pond 7.7 prepared by medicament, medicament discharge line 7.8, medicament Siphon pot 7.8.1, compound pump 7.8.2, reservoir discharge line 7.9, reservoir Siphon pot 7.9.1, filtrate delivery pump 7.9.2.
Detailed description of the invention
Referring to Fig. 1 ~ Figure 12, a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system that this utility model relates to, it include desulphurization denitration degree of depth dedusting integrated tower (referred to as integrated tower) 1, filtrate cycle system 2, Water spray blood circulation 3 of giving a dinner of welcome, except mist spray liquid supply system 4, aerating system 5, lime white preparation system 6 and filtrate preparation system 7.
Described integrated tower 1 is disposed with integrated tower reservoir 1.1, flue access port 1.2, filtrate spray equipment 1.3, gas-liquid separation device 1.4, water spray system 1.5 of giving a dinner of welcome, demister 1.6 bottom-up and is positioned at the air vent 1.7 at top.External filtrate cycle system 2 it is connected between described integrated tower reservoir 1.1 and filtrate spray equipment 1.3, described gas-liquid separation device 1.4 and give a dinner of welcome and be connected to external Water spray blood circulation 3 of giving a dinner of welcome between water spray system 1.5, described demister 1.6 is connected with the external mist spray liquid supply system 4 that removes, and described integrated tower reservoir 1.1 is circumscribed with aerating system 5.The precipitation slag that middle filtrate, the lime white of lime white preparation system 6 formation and the Water spray blood circulation 3 of giving a dinner of welcome that aerating system 5 is formed is discharged feeds filtrate preparation system 7 and prepares filtrate.
Being provided with liquidometer and densimeter in described integrated tower reservoir 1.1, the sidewall of described integrated tower reservoir 1.1 is provided with four filtrate cycle pipeline access port 1.1.1, is provided with filter screen 1.1.2 at four filtrate cycle pipeline access port 1.1.1 places；The sidewall of described integrated tower reservoir 1.1 accesses a disturbance pipeline 1.1.3, and described disturbance pipeline 1.1.3 has been arranged in parallel two disturbance pump 1.1.4, the outer termination flushing water of disturbance pipeline 1.1.3.
The flue 1.2.1 that described flue access port 1.2 supplies with air-introduced machine is connected, and the flue gas in flue 1.2.1 is through the bag-type dust of preamble；
Described filtrate spray equipment 1.3 includes the filtrate shower 1.3.1 of the four layers of level being evenly arranged, and the spray of filtrate shower 1.3.1 is downwardly；
Described gas-liquid separation device 1.4 includes being connected in one the water conservancy diversion gripper shoe 1.4.1 of tower 1 inwall, described water conservancy diversion gripper shoe 1.4.1 is diagonally disposed, described water conservancy diversion gripper shoe 1.4.1 is provided with the through hole 1.4.2 that array is arranged, through hole 1.4.2 is provided with mozzle 1.4.3, the over top of described mozzle 1.4.3 is provided with blast cap 1.4.4, it is connected by multiple dowel 1.4.5 between described blast cap 1.4.4 and mozzle 1.4.3, the end face of described blast cap 1.4.4 is taper seat, and described blast cap 1.4.4 is welded from bending by one piece of arc.Sidewall at the integrated tower 1 of water conservancy diversion gripper shoe 1.4.1 low side offers washes dust-water discharging port 1.4.6.
The water sprayer tube 1.5.1 that gives a dinner of welcome of the two-layer level that described water spray system 1.5 of giving a dinner of welcome includes being evenly arranged, the spray of the water sprayer tube 1.5.1 that gives a dinner of welcome is downwardly；
Described demister 1.6 includes the board-like demister 1.6.1 of two-layer, the board-like demister 1.6.1 of lower floor is arranged below an elimination spray painting shower pipe 1.6.2, two-layer it is provided with except spray painting shower pipe 1.6.2 between the board-like demister 1.6.1 of two-layer, wherein the spray painting shower pipe 1.6.2 that removes except spray painting shower pipe 1.6.2 and top layer of bottom sprays upwardly directed, and the spray except spray painting shower pipe 1.6.2 in intermediate layer is downwardly.
Described filtrate cycle system 2 includes the four filtrate cycle pipelines 2.1 being arranged in parallel, one end of four filtrate cycle pipelines 2.1 connects four filtrate cycle pipeline access port 1.1.1 respectively, and the other end of four filtrate cycle pipelines 2.1 connects the inlet of filtrate shower 1.3.1 respectively；Filtrate cycle pipeline 2.1 is disposed with filtrate cycle duct attenuation check-valves 2.8 and filtrate cycle pipe circle pump 2.2 from the one end near one end of filtrate cycle pipeline access port 1.1.1 to the inlet of filtrate shower 1.3.1, filtrate cycle pipeline 2.1 between the inlet of described filtrate cycle pipe circle pump 2.2 to filtrate shower 1.3.1 is respectively connected with filtrate cycle pipe flushing water inlet pipe road 2.3, filtrate cycle pipe flushing water inlet pipe road 2.3 is provided with filtrate cycle pipe flushing water inlet pipe road damping check valve 2.4, filtrate cycle pipeline 2.1 between described filtrate cycle pipe circle pump 2.2 to filtrate cycle pipeline access port 1.1.1 is respectively connected with filtrate cycle pipe flushing water discharge pipe road 2.5, filtrate cycle pipe flushing water discharge pipe road 2.5 is connected to drain, filtrate cycle pipe flushing water discharge pipe road 2.5 is provided with filtrate cycle pipe flushing water discharge pipe road damping check valve 2.6.Filtrate cycle pipeline 2.1 between described filtrate cycle duct attenuation check-valves 2.8 and filtrate cycle pipe circle pump 2.2 is connected to filtrate input channel 2.7.
Described Water spray blood circulation 3 of giving a dinner of welcome includes being connected to give a dinner of welcome the Water spray liquid circulating line 3.1 of giving a dinner of welcome of inlet of water sprayer tube 1.5.1 from washing dust-water discharging port 1.4.6, described in give a dinner of welcome Water spray liquid circulating line 3.1 be disposed with water pot 3.2 of giving a dinner of welcome, buffer tank 3.3 and three groups of Water spray liquid circulating line circulating pumps 3.4 of giving a dinner of welcome being arranged in parallel from the one end near one end to the inlet near the water sprayer tube 1.5.1 that gives a dinner of welcome of washing dust-water discharging port 1.4.6.
Described include technique water pot 4.1 except mist spray liquid supply system 4, the fresh water (FW) input port at described technique water pot 4.1 top connects the external world, first discharge outlet bottom described technique water pot 4.1 is by being connected to remove the inlet of spray painting shower pipe 1.6.2 except mist spray liquid input channel 4.2, described except mist spray liquid input channel 4.2 being arranged in parallel three groups except mist spray fluid supply pump 4.3, second discharge outlet bottom described technique water pot 4.1 is connected to the entrance of integrated tower 1 by technique water pot discharge line 4.4, described technique water pot discharge line 4.4 has been arranged in parallel two emergent cooling pumps 4.5.
Described aerating system 5 includes Aeration tank 5.1 and aeration tank 5.4, it is connected to Aeration tank pipeline 5.2 between described Aeration tank 5.1 and the integrated tower reservoir 1.1 of integrated tower 1, described Aeration tank pipeline 5.2 has been arranged in parallel two reservoir excavationg pumps 5.3, Aeration tank pipeline 5.2 between reservoir excavationg pump 5.3 to Aeration tank 5.1 introduces flushing water, being connected to aeration tank pipeline 5.5 between described aeration tank 5.4 and the integrated tower reservoir 1.1 of integrated tower 1, aeration tank pipeline 5.5 also accesses drain.Agitating device it is provided with, the external oxidation fan 5.7 of Aeration tank oxidation tube 5.6 of Aeration tank 5.1 inner bottom part in described Aeration tank 5.1.
Described lime white preparation system 6 includes lime white and prepares pond 6.1, lime white is prepared in pond 6.1 and is provided with agitating device, what pond 6.1 prepared by lime white is provided above feed bin 6.2, lime white is prepared pond 6.1 and is drawn a lime white discharge line 6.3, lime white discharge line 6.3 is disposed with lime white Siphon pot 6.4 and two groups of lime white excavationg pumps 6.5 being arranged in parallel from front to back, the lime white discharge line 6.3 in lime white excavationg pump 6.5 front accesses drain, and the lime white discharge line 6.3 at lime white excavationg pump 6.5 rear introduces flushing water.
Described filtrate preparation system 7 includes Aeration tank filtrate access conduit 7.1, lime white access conduit 7.2, water pot discharge line 7.3 of giving a dinner of welcome, be arranged in parallel two reduction ponds 7.4, reduction pond discharge line 7.5, reservoir 7.6, medicaments prepare pond 7.7, medicament discharge line 7.8 and reservoir discharge line 7.9.Wherein the front end of Aeration tank filtrate access conduit 7.1 connects Aeration tank 5.1, the rear end of Aeration tank filtrate access conduit 7.1 separates two and is respectively connected to two reduction ponds 7.4, be disposed with Aeration tank Siphon pot 7.1.1 in Aeration tank filtrate access conduit 7.1 from front to back, Aeration tank filtrate access conduit 7.1 between two the first feeding of filter press pump 7.1.2 being arranged in parallel and the first pressure filter 7.1.3, Aeration tank Siphon pot 7.1.1 and the first feeding of filter press pump 7.1.2 introduces flushing water.The front end of lime white access conduit 7.2 connects lime white discharge line 6.3, and the rear end of lime white discharge line 6.3 separates two and is respectively connected to two reduction ponds 7.4.The give a dinner of welcome front end of water pot discharge line 7.3 connects the discharge gate given a dinner of welcome bottom water pot 3.2, and the rear end of water pot discharge line 7.3 of giving a dinner of welcome separates two and is respectively connected to two reduction ponds 7.4.It is provided with agitating device in two reduction ponds 7.4.The front end connection of reduction pond discharge line 7.5 separates two and connects two the reduction ponds 7.4 being arranged in parallel respectively, the rear end of reduction pond discharge line 7.5 connects reservoir 7.6, reduction pond discharge line 7.5 is disposed with the second feeding of filter press pump 7.5.1 and the second pressure filter 7.5.2 that are arranged in parallel from front to back, reduction pond discharge line 7.5 and two reduction junctions, pond 7.4 are provided with a reduction pond Siphon pot 7.5.3, and the reduction pond discharge line 7.5 between the second feeding of filter press pump 7.5.1 and the second pressure filter 7.5.2 introduces flushing water.The front end of medicament discharge line 7.8 connects medicament and prepares pond 7.7, the rear end of medicament discharge line 7.8 connects reservoir 7.6, medicament is prepared in pond 7.7 and is provided with agitating device, medicament discharge line 7.8 is disposed with medicament Siphon pot 7.8.1 from front to back and the medicament discharge line 7.8 at two compound pump 7.8.2, compound pump 7.8.2 rear that is arranged in parallel introduces flushing water.The front end of reservoir discharge line 7.9 connects reservoir 7.6, the rear end of reservoir discharge line 7.9 is connected to filtrate input channel 2.7, reservoir discharge line 7.9 is disposed with from front to back on the reservoir discharge line 7.9 at reservoir Siphon pot 7.9.1 and two the filtrate delivery pump 7.9.2 being arranged in parallel, filtrate delivery pump 7.9.2 rears and introduces flushing water.
This programme adopts circulation ammonia-soda process to absorb SO2 and the NOx in flue gas, and namely with ammonia alkali liquid as desulfurization denitrification agent, Calx is as ammonia alkali circular regeneration agent.Its ultimate principle is: ammonia enters the sulfur dioxide, the nitrogen oxides that absorb in flue gas in desulfurizing tower, then (Main Ingredients and Appearance is Ca (OH) with lime white2) regeneration of desulphurization denitration product is displaced ammonia backs within desulphurization denitration in desulphurization denitration tower.
Design principle
1, desulfurizing and denitrifying process follows technology maturation, equipment advanced person is stable, convenient operating maintenance, automaticity are higher, operating cost is relatively low, non-secondary pollution principle.Ensure that High Availabitity rate, high desulphurization denitration rate, low lime consumption amount, low pressure power consumption and low water consumption, and comply fully with environmental protection requirement.
2, all many factors consider system for desulfuration and denitration from boiler type, load, furnace rear desulphurization denitration place etc., it is proposed to reasonably desulfurizing and denitrifying process scheme.
3, desulfurizing and denitrifying process takes into full account boil characteristic, and SR is stable, desulfuring and denitrifying apparatus opening, stop, run and not affect boiler in accident treatment situation properly functioning.
4, desulfurizing and denitrifying process adapts to load variations and the fluctuations such as boiler air quantity, temperature, SO2, NOx concentration.
5, desulfurizing and denitrifying process and equipment connection and reasonable arrangement, can meet the Placement of general layout requirement that proprietor proposes.The system described in literary composition and layout are basic demands, by detailed technological design, realize all of engine request, build a complete desulfuring and denitrifying apparatus.
6, desulfurization denitrification agent and the conveying of by-product material, circulation smoothness, ability is mated.
7, desulphurization denitration main equipment design service life is not less than 15 years.
8, desulfurization denitrification agent less expensive, be easily obtained.
9, desulfuring and denitrifying apparatus adopts DCS to control, and considers to be connected with the signal of major project simultaneously, reserved communication interface.
10, desulphurization denitration by-product Gypsum Fibrosum moisture content is less than 10%, transports outward with automobile, comprehensive utilization.
11, after desulphurization denitration, flue gas collects laggard chimney (needing anticorrosion, demanding party is responsible for) discharge.
12, all buildings or structures of whole flue gas desulfurization and denitrification system are arranged and are coordinated with major project.And to optimize in given regional extent with arrangement requirement according to its engineering design, so that its technological process and connection and reasonable arrangement, safety and economy.
13, desulphurization denitration region water, electricity, gas use, and will install metering device, and include these energy measurement datas in control system and show on the subtube being connected with main factory house steward, and reserve and the information interface of master device CEMS system docking.
14, supplier flue gas desulfurization and denitrification system is proposed needed for the water quality of the industry water cooling water of each rotating machinery (fresh water (FW)), hydraulic pressure, water yield requirement, and compressed air for instrument consumption and relevant parameter requirement.Demanding party will be responsible for the industrial water source carried used by flue gas desulfurization and denitrification system.Flue gas desulfurization and denitrification system compressed air gas source be responsible for by demanding party.Construction and industry water, the steam etc. debugged of flue gas desulfurization and denitrification system institute before transferring will be carried interface position by demanding party.
Performance parameter and operating analysis
| Sequence number | Technology category | Nitric efficiency | Desulfuration efficiency | Operating cost |
| 1 | Lime-gypsum method | Nothing | 90-97% | High |
| 2 | Limestone-gypsum method | Nothing | 90-95% | Moderate |
| 3 | Dual alkali | 5-10% | 90-95% | High |
| 4 | Ammonia process | 10-15% | 95-99% | Side-product can support ammonia expense |
| 5 | SCR | 60-85% | 5-10% | High |
| 6 | SNCR | 30-60% | 5-10% | Moderate |
| 7 | Low-NO_x combustion technology | 20-35% | Nothing | Low |
| 8 | This technology | 85-95% | 96-99% | Low |
Claims (9)
1. a high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system, it is characterised in that it include integrated tower (1), filtrate cycle system (2), Water spray blood circulation of giving a dinner of welcome (3), except mist spray liquid supply system (4), aerating system (5), lime white preparation system (6) and filtrate preparation system (7)；
Described integrated tower (1) is disposed with integrated tower reservoir (1.1) bottom-up, flue access port (1.2), filtrate spray equipment (1.3), gas-liquid separation device (1.4), give a dinner of welcome water spray system (1.5), demister (1.6) and air vent (1.7), it is connected to filtrate cycle system (2) between described integrated tower reservoir (1.1) and filtrate spray equipment (1.3), Water spray blood circulation (3) of giving a dinner of welcome it is connected between described gas-liquid separation device (1.4) and water spray system of giving a dinner of welcome (1.5), described demister (1.6) is connected with the external mist spray liquid supply system (4) that removes, described integrated tower reservoir (1.1) is circumscribed with aerating system (5), the middle filtrate that aerating system (5) is formed, the precipitation slag that the lime white that lime white preparation system (6) is formed and Water spray blood circulation (3) of giving a dinner of welcome are discharged feeds filtrate preparation system (7) and prepares filtrate.
2. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterized in that described gas-liquid separation device (1.4) includes being connected in one the water conservancy diversion gripper shoe (1.4.1) of tower (1) inwall, described water conservancy diversion gripper shoe (1.4.1) is diagonally disposed, described water conservancy diversion gripper shoe (1.4.1) is provided with the through hole (1.4.2) that array is arranged, through hole (1.4.2) is provided with mozzle (1.4.3), the over top of described mozzle (1.4.3) is provided with blast cap (1.4.4), it is connected by multiple dowels (1.4.5) between described blast cap (1.4.4) with mozzle (1.4.3), sidewall at the integrated tower (1) of water conservancy diversion gripper shoe (1.4.1) low side offers washes dust-water discharging port (1.4.6).
3. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterized in that the many filtrate cycle pipelines (2.1) that described filtrate cycle system (2) includes being arranged in parallel, one end of many filtrate cycle pipelines (2.1) is integrally connected multiple filtrate cycle pipeline access port (1.1.1) of the sidewall of tower reservoir (1.1) respectively, and the other end of many filtrate cycle pipelines (2.1) connects the inlet of the filtrate shower (1.3.1) of filtrate spray equipment (1.3) respectively；Filtrate cycle pipeline (2.1) is disposed with filtrate cycle duct attenuation check-valves (2.8) and filtrate cycle pipe circle pump (2.2) from the one end near one end of filtrate cycle pipeline access port (1.1.1) to the inlet of filtrate shower (1.3.1), described filtrate cycle pipe circle pump (2.2) is respectively connected with filtrate cycle pipe flushing water inlet pipe road (2.3) to the filtrate cycle pipeline (2.1) between the inlet of filtrate shower (1.3.1), described filtrate cycle pipe circle pump (2.2) is respectively connected with filtrate cycle pipe flushing water discharge pipe road (2.5) to the filtrate cycle pipeline (2.1) between filtrate cycle pipeline access port (1.1.1), filtrate cycle pipe flushing water discharge pipe road (2.5) is connected to drain, filtrate cycle pipeline (2.1) between described filtrate cycle duct attenuation check-valves (2.8) and filtrate cycle pipe circle pump (2.2) is connected to filtrate input channel (2.7).
4. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, the dust-water discharging port (1.4.6) of washing that Water spray blood circulation of giving a dinner of welcome described in it is characterized in that (3) includes from gas-liquid separation device (1.4) bottom is connected to give a dinner of welcome Water spray liquid circulating line (3.1) of giving a dinner of welcome of inlet of water sprayer tube (1.5.1), described Water spray liquid circulating line (3.1) of giving a dinner of welcome is disposed with water pot of giving a dinner of welcome (3.2) from the one end near one end to the inlet of the water sprayer tube of giving a dinner of welcome (1.5.1) near water spray system (1.5) of giving a dinner of welcome of washing dust-water discharging port (1.4.6), buffer tank (3.3) and Water spray liquid circulating line circulating pump (3.4) of giving a dinner of welcome.
5. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterized in that the described mist spray liquid supply system (4) that removes includes technique water pot (4.1), the fresh water (FW) input port at described technique water pot (4.1) top connects the external world, first discharge outlet of described technique water pot (4.1) bottom by being connected to the inlet removing spray painting shower pipe (1.6.2) of demister (1.6) except mist spray liquid input channel (4.2), described except mist spray liquid input channel (4.2) being provided with except mist spray fluid supply pump (4.3), second discharge outlet of described technique water pot (4.1) bottom is connected to the entrance of integrated tower (1) by technique water pot discharge line (4.4), described technique water pot discharge line (4.4) is provided with emergent cooling pump (4.5).
6. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterized in that described aerating system (5) includes Aeration tank (5.1) and aeration tank (5.4), it is connected to Aeration tank pipeline (5.2) between the integrated tower reservoir (1.1) of described Aeration tank (5.1) and integrated tower (1), described Aeration tank pipeline (5.2) is provided with reservoir excavationg pump (5.3), Aeration tank pipeline (5.2) between reservoir excavationg pump (5.3) to Aeration tank (5.1) introduces flushing water, aeration tank pipeline (5.5) it is connected between described aeration tank (5.4) and integrated tower reservoir (1.1), aeration tank pipeline (5.5) also accesses drain.
7. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterised in that described filtrate preparation system (7) includes Aeration tank filtrate access conduit (7.1), lime white access conduit (7.2), water pot discharge line (7.3) of giving a dinner of welcome, reduction pond (7.4), reduction pond discharge line (7.5), reservoir (7.6), medicament prepare pond (7.7), medicament discharge line (7.8) and reservoir discharge line (7.9)；Wherein the front end of Aeration tank filtrate access conduit (7.1) connects the Aeration tank (5.1) of aerating system (5), reduction pond (7.4) is accessed in the rear end of Aeration tank filtrate access conduit (7.1), Aeration tank filtrate access conduit (7.1) is disposed with Aeration tank Siphon pot (7.1.1) from front to back, first feeding of filter press pump (7.1.2) and the first pressure filter (7.1.3), the front end of lime white access conduit (7.2) connects the lime white discharge line (6.3) of lime white preparation system (6), reduction pond (7.4) is accessed in the rear end of lime white discharge line (6.3), the give a dinner of welcome front end of water pot discharge line (7.3) connects the water pot of giving a dinner of welcome (3.2) of Water spray blood circulation (3) of giving a dinner of welcome, give a dinner of welcome water pot discharge line (7.3) rear end access reduction pond (7.4), the front end of reduction pond discharge line (7.5) connects reduction pond (7.4), the rear end of reduction pond discharge line (7.5) connects reservoir (7.6), reduction pond discharge line (7.5) is disposed with the second feeding of filter press pump (7.5.1) and the second pressure filter (7.5.2) from front to back, the front end of medicament discharge line (7.8) connects medicament and prepares pond (7.7), the rear end of medicament discharge line (7.8) connects reservoir (7.6), medicament discharge line (7.8) is disposed with medicament Siphon pot (7.8.1) and compound pump (7.8.2) from front to back, the front end of reservoir discharge line (7.9) connects reservoir (7.6), the rear end of reservoir discharge line (7.9) is connected to the filtrate input channel (2.7) of filtrate cycle system (2), reservoir discharge line (7.9) is disposed with reservoir Siphon pot (7.9.1) and filtrate delivery pump (7.9.2) from front to back.
8. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterized in that the sidewall of described integrated tower reservoir (1.1) accesses a disturbance pipeline (1.1.3), described disturbance pipeline (1.1.3) has been arranged in parallel two disturbance pumps (1.1.4), the outer termination flushing water of disturbance pipeline (1.1.3).
9. a kind of high efficiency, low cost flue gas desulfurization and denitrification degree of depth dust pelletizing system according to claim 1, it is characterised in that be provided with liquidometer and densimeter in described integrated tower reservoir (1.1).
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|---|---|---|---|
| CN201620038444.9U CN205340539U (en) | 2016-01-16 | 2016-01-16 | High -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system |
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| CN201620038444.9U CN205340539U (en) | 2016-01-16 | 2016-01-16 | High -efficient low -cost flue gas desulfurization denitration degree of depth dust pelletizing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536477A (en) * | 2016-01-16 | 2016-05-04 | 江阴市尚时环境工程有限公司 | Efficient low-cost flue gas desulfurization and denitrification deep dust removal system |
| CN106215612A (en) * | 2016-08-30 | 2016-12-14 | 中冶华天工程技术有限公司 | A kind of honeycomb fashion intermediate row hydrophone |
-
2016
- 2016-01-16 CN CN201620038444.9U patent/CN205340539U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105536477A (en) * | 2016-01-16 | 2016-05-04 | 江阴市尚时环境工程有限公司 | Efficient low-cost flue gas desulfurization and denitrification deep dust removal system |
| CN106215612A (en) * | 2016-08-30 | 2016-12-14 | 中冶华天工程技术有限公司 | A kind of honeycomb fashion intermediate row hydrophone |
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