CN207694581U - A kind of C10 or less monomers alkane production desulphurization denitration complexes - Google Patents
A kind of C10 or less monomers alkane production desulphurization denitration complexes Download PDFInfo
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Abstract
The utility model provides a kind of C10 or less monomers alkane production desulphurization denitration complexes.Its technical solution is：Mainly by boiler（1）, cyclone separator（2）, air preheater（3）, wind turbine I（4）, box pulse blowback bag-type dust collector（5）, thermocouple（6）, wind turbine II（7）, denitrating tower（8）, desulfurizing tower（9）, desulfurization internal circulation pump A（10）, desulfurization internal circulation pump B（11）, alkali liquid tank（12）, desulfurizing tower circulatory pool（13）, desulfurizing tower spray pump（14）, desulfurizing tower reflux pump（15）, denitration circulatory pool（16）, denitrating tower spray pump（17）, denitration reflux pump（18）, desulfurization column bottoms pump（19）, oxidant tank（20）, lime powder bin（21）, circular response pond（22）, feed intake pump（23）, plate and frame filter press（24）, clean spray pump（25）, reservoir（26）, control room（27）, process water（28）With flue gas on-line checking device（29）It constitutes.The utility model is designed reasonably is practical, securely and reliably, realizes the qualified discharge of boiler smoke.
Description
Technical field：
The utility model is related to desulphurization denitration technical field, especially a kind of C10 or less monomers alkane production is de- with desulfurization
Nitre complexes.
Background technology：
C10Following monomer alkane is high-purity hydrocarbon of extraction, rectifying separation from naphtha cut, in plastics plus
Work, industrial refrigeration, rubber, paint and field of food and medicine all have higher use value.As China gradually steps into fresh warp thread
It helps the development epoch, society is to C10The demand of following monomer alkane product sharply increases, and to strive for the market share of bigger, promotes
Product quality upgrades, and further increases Social benefit and economic benefit, caters to the new demand of national development green economy, processing enterprise
The production scale of industry constantly expands while also increasing the heating demand of alkane processing unit (plant), while also to enterprise's heating boiler
Flue gas emission proposes new requirement.
Flue gas desulfurization denitration dust-removing device is relatively more at present, and process is mainly based on wet desulphurization denitration, but because big
Most desulfuring and denitrifying apparatus are not suitable for applications catalyst, and present environmental protection standard is not achieved and on the verge of being replaced or transformation in flue gas emission
Destiny, more mature desulfuring and denitrifying apparatus is to use wet desulphurization+selective catalytic reduction COMBINED PROCESS now
Purified treatment is carried out to boiler smoke, but these devices exist in practical applications that equipment is huge, water consumption is big, one-time investment
Height, by-product are of poor quality, it is difficult to the shortcomings of recycling.Selective catalytic reduction denitrification apparatus in operation can be because of catalyst
Effect and enhance react activity of the sulfide with oxygen, SO is significantly increased3Production quantity, SO3Easily with excessive NH3It generates
NH4HSO4.Due to NH4HSO4With viscosity and corrosivity, it is easy attachment back-end ductwork and equipment, and then lead to flue and equipment
Damage, maintenance expense is high, and the catalyst poisoning phenomenon thereby resulted in also can not be ignored.Meanwhile desulphurization denitration dedusting fills
It sets in the case of applications catalyst, oxidant or certain lye amount, the key for improving unit efficiency is in limited device
Space increases the contact area and number of the above material and flue gas, therefore optimizes internal spray structure, improve demister system with it is interior
Portion's reaction solution recirculating system is same often important.
In conclusion to solve existing C10Following monomer alkane production desulphurization denitration complexes complex process, investment
Greatly, operating cost is high, maintains the problems such as expensive and denitrification efficiency is low, breaks through the environmental protection bottle of puzzlement enterprise development
Neck, the desulphurization denitration complexes efficiently simplified have become the striving direction of current control smoke pollution.
Invention content
The purpose of the utility model is to overcome the above-mentioned prior art deficiency, provide a set of high-efficiency desulfurization, denitration, dedusting,
Demisting realizes the new efficient reduced form desulphurization denitration dress of energy-saving and water-saving, flue gas ultra-micro-emission and desulphurization denitration by-product resource
It sets.
The utility model is realized by following technological means：Cyclone separator is connected to boiler exhaust flue, whirlwind
Separator is connected to by pipeline with air preheater, air preheater outlet be connected to wind turbine I, wind turbine I by pipeline with it is box
Pulse backblowing bag filter is connected to, and the outlet of box pulse blowback bag-type dust collector is connected to thermocouple, and passes through pipeline and wind turbine
II connection, wind turbine II are connected to by pipeline with denitrating tower gas inlet, and oxidant tank is connected to by pipeline with denitration circulatory pool, are taken off
Nitre circulatory pool is connected by pipeline with denitrating tower spray pump, and denitration spray pump discharge passes through pipeline and oxidant liquid spray tube phase
Even, denitrating tower reaction solution stir chamber bottom is equipped with pipeline and is connected with denitrating tower reflux pump inlet, denitrating tower reflux pump outlet line
It is passed through denitration circulatory pool, denitrating tower pipeloop is separately connected desulfurization internal circulation pump A and desulfurization internal circulation pump B, and denitrating tower passes through
Denitrating tower fume pipe is connected to the desulfurizing tower smoke chamber of desulfurizing tower, and alkali liquid tank is connected to by pipeline with desulfurizing tower circulatory pool, semicanal
Liquid collecting return duct is connected with reaction solution stir chamber and desulfurizing tower reflux pump inlet respectively by pipeline, desulfurizing tower reflux pump discharge pipe
Line is passed through desulfurizing tower circulatory pool, and desulfurizing tower circulatory pool is pumped out by pipeline and desulfurizing tower spray pump inlet communication, desulfurizing tower spray
Mouth is connected by pipeline with lye reflux spray tube, and reaction solution stir chamber bottom is connected equipped with pipeline with the pump inlet of desulfurizing tower bottom,
Desulfurizing tower bottom pump discharge pipeline is passed through circular response pond, and lime powder bin bottom discharge mouth is connected with circular response pond.Circular response
Pond is connected by pipeline with the pump inlet that feeds intake, and the pump discharge that feeds intake is connected by pipeline with plate and frame filter press funnel type feed inlet, plate
Frame filter press outlet line is passed through in reservoir, and reservoir is connected by pipeline with cleaning spray pump inlet, and cleaning spray pumps out
Mouth end of line is connected to round spray head, is located at plate and frame filter press top, and desulfurizing tower top is exhaust pipe, and exhaust tube wall is equipped with
Flue gas on-line checking device, for flue gas on-line checking device by concentrating circuit to be connected with control room, technique water pipeline connects desulfurization all the way
Tower, another way connect denitrating tower.
A kind of C10The following production of monomer alkane desulphurization denitration complexes, including dust removing units, denitration unit, desulfurization list
Member, gypsum press filtration unit and detection control unit.Preceding Unit four is coupled successively by pipeline, detection control unit and aforementioned four
Equipment, pipeline in unit link respectively, are realized by instrument control circuit and are arranged instrumentation monitoring and controlling information and flue gas
Put the transmission of detection information.The discharged flue gas of boiler combustion passes sequentially through dust removing units, denitration unit, desulfurization unit, gypsum pressure
Filter unit is purified, is discharged.Reaction product after denitration desulfurization process by desulfurizing tower stir chamber bottom funnel type collection
Liquid pipe is collected, and gypsum press filtration unit is delivered to through desulfurization column bottoms pump.
Dust removing units include boiler, cyclone separator, air preheater, wind turbine I, box pulse blowback bag-type dust collector,
Thermocouple, wind turbine II.99.9% or more dust in flue gas can be removed by dust removing units, the neat stress after dust removal process（Dust
Content≤20mg/Nm3）It is sent to denitration unit by wind turbine.
Cyclone separator includes air inlet, strong cyclone separating chamber, dust storage chamber, gas outlet, can remove diameter >=3 μm in flue gas
Large dust particle.
Air preheater carries out heat exchange using boiler precombustion air and boiler emission flue gas, while reaching and arranging boiler
It puts flue gas and carries out refrigeration processing, to the purpose of boiler combustion charge heating.
Box pulse blowback bag-type dust collector include offline model action of low-voltage pulse bag type dust-remover ontology, bypath system,
Air compression system, control system.
Thermocouple is located at box pulse blowback bag-type dust collector exhaust outlet, for being carried out to neat stress temperature after dedusting
Examinations, and monitoring signals are sent to control room.
Denitration unit includes denitrating tower, denitrating tower spray pump, denitrating tower reflux pump, oxidant tank and denitration circulatory pool.Into
It is sent to desulfurization unit after entering the oxidation-treated flue gas in denitrating tower, the exchange of dynamic liquid film, cleaning showers and demisting dedusting.
Dynamic liquid film exchange area uses gas-liquid mass transfer liquid film absorption techniques in denitrating tower, and autoxidator spraying zone is come
Liquid, the solid matter such as oxidant droplet, nitric acid droplet, nitrous acid droplet, water droplet, minute dusts particle of entrained in flue gas
It carries out fully absorbing interception, 95% or more is up to the absorptivity of non-gaseous matter, greatly reduce oxidant loss, reduce net
Droplet in flue gas and dust content.
Denitrating tower cleaning spray tube is located in denitrating tower above dynamic liquid film exchange area, using to through the net of peroxidization
Flue gas is dusted cleaning, while being regulated and controled to cleaning spray tube spray flux by control room, realizes that temperature is adjusted in tower.
The stirring of three leaf sectors is equipped in denitrating tower reaction solution stir chamber, desulfurizing tower reaction solution stir chamber circular response pond
Device promotes liquid in stir chamber and reaction tank to come into full contact with mixing.
Desulfurization unit includes desulfurizing tower, desulfurizing tower spray pump, desulfurizing tower reflux pump, desulfurization column bottoms pump, desulfurization internal circulation pump
A, desulfurization internal circulation pump B, alkali liquid tank and desulfurizing tower circulatory pool.It is equal through lye reflux spray, flue gas into the flue gas in desulfurizing tower
Cloth, lye spray, tablet demisting, dynamic liquid film exchange, enter detection control unit after high-effective dust-removing demisting.
Three layers of oxidant liquid spray tube are set in denitrating tower, and nozzle direction is successively from bottom to top for the oxidant liquid spraying layer
For under-previous-next, sprinkler design is to absorb vortex rotation remittance structure, so that oxidant condensation rate is reached 99% or more, the spraying of tower inner section
Coverage rate is up to 100%.
Twice orifice plate flue gas even distribution device is set in desulfurizing tower, and smoke hole is uniformly distributed in the orifice plate, it is ensured that flue gas flow direction is equal
It is even.
Desulfurization tower packing is located among twice orifice plate flue gas even distribution device, using Pall ring filler, for increasing flue gas dispersion
Degree, increase gas-liquid two-phase contact area, improve filler inner surface utilization rate, and can within the scope of wider flue gas flow rate,
The mass-transfer efficiency kept constant.
Be respectively provided with lye reflux spray tube above each road flue gas even distribution device, the lye reflux spray tube by distribution pipe network and
Screw type rotary sprinkler composition, screw type rotary nozzle are uniformly distributed in spray tube, and nozzle is downward, to through orifice plate smoke distribution
Flue gas after device is uniformly distributed carries out full coverage type spray, and spray flux size carries out remote automatic control behaviour by control room
Make, it is ensured that flue gas can be come into full contact with and be reacted with lye.
The equal gas-bearing formation of desulfurizing tower is located above lye reflux spray tube, including the equal gas-bearing formation of bottom and the equal gas-bearing formation of top layer, midsole
The gas channel being relatively large in diameter is distributed on gas-bearing formation in layer, can buffer gas flow speed, and flue gas is tentatively shunted, top layer is equal
Gas-bearing formation is evenly distributed with the more oblique gas channel of diameter lesser amt, can be while promotion flue gas flows effect in tower
It is maximized to reduce windage.
Semicanal liquid collecting return duct is located above the equal gas-bearing formation of desulfurizing tower, is divided into upper layer and lower layer, each layer semicanal liquid collecting pipeline according to
Secondary arranged in parallel, lower layer's semicanal collector tube and upper layer semicanal collector tube are staggered, and every layer of semicanal collector tube is at 15 ° of angle lappings
Tiltedly, it is ensured that hydrops summarizes to manifold in pipe, and manifold connects tower exterior tubing, be delivered to respectively reaction solution stir chamber and
Desulfurizing tower circulatory pool.When ph value of mixture is between 9-10 in reaction solution stir chamber, the connected external reflux of manifold
Liquid collecting is delivered to reaction solution stir chamber by pipeline, and as ph value of mixture ＜ 9 in reaction solution stir chamber, manifold connects outer
Liquid collecting is delivered to desulfurizing tower circulatory pool by portion's reflux pipeline.
Lye spray tube is located above semicanal liquid collecting return duct, by distribution pipe network and screw type rotary sprinkler composition, spiral
Formula rotary nozzle is uniformly distributed in spray tube, and nozzle is downward, and full coverage type spray is carried out to the flue gas from the equal fluid layer of desulfurizing tower
Leaching, spray flux size carry out remote automatic control operation by control room, it is ensured that flue gas can be come into full contact with lye
And reaction.
Lye spray tube constitutes desulfurizing tower circulated sprinkling system with above-mentioned lye reflux spray tube.
Flat defogger and upper panel demister cleaning spray constitute tablet demister system, and flat defogger is located at high level
It above lye spray tube, is made of four layers of streamline vane, flat defogger cleaning spray is by alternating expression spray pipe network and full cone
Shape nozzle forms, and shower water spray angle is 90-120 °, sprays solid circular cone, can ensure that blade is all capped.
Desulfurizing tower dynamic liquid film exchange area uses gas-liquid mass transfer liquid film absorption techniques, will pass through tablet demister system demisting
The water mist, fogged lye of entrained with, the fine drop of reaction product and minute dusts particle are fully inhaled in flue gas afterwards
It receives and intercepts, reduce lye and by-product loss.
Dynamic liquid film exchange area spray cleans dynamic liquid film exchange area when being mainly used for turnaround of unit.
High-efficiency cyclone dedusting demister is mainly made of external mounting bracket, dedusting demisting chamber and PP beads, and high-efficiency cyclone removes
The operation program that dirt demister gives according to control room carries out depth demisting dedusting to neat stress, is revolved using the high speed of PP beads
The collection that the centrifugal force of transhipment movable property life will fall in demister inner wall by the drop and minute dusts of demister, and pass through inner wall
Eddy flow substance is drained into semicanal liquid collecting return duct and handled by liquid bath.The high-efficiency cyclone dedusting demister is the same as high-efficiency cyclone dedusting
Demister spray constitutes high-efficiency cyclone dedusting demister system.
Gypsum press filtration unit is provided with lime powder bin, circular response pond, the pump that feeds intake, plate and frame filter press, reservoir and cleaning
Spray.Lime in lime powder bin and desulfurizing tower carry out reaction solution and are mixed in circular response pond, are built into through circular response pond
Blender is stirred mixing, pulverized limestone and Na2SO4Liquid obtains CaSO after fully reacting4Suspension, suspension is through the pumping that feeds intake
It send to plate and frame filter press and is filtered dehydration, be 6%-10% through plasterboard water content obtained by press filtration, gained filtrate is delivered to
Reservoir, the cleaned spray of portion filtrate, which is pumped in plate and frame filter press, is adjusted water content in plasterboard.
Plate and frame filter press is mainly made of press filtration machine support, host and electrical control cabinet three parts.In circular response pond
CaSO4Suspension is input to certain pressure and flow in plate compression machine host filter chamber through the pump that feeds intake to be filtered, suppresses
At cake, filtrate water flows in reservoir, moisture about 6%-10% in filter cake, without filling storage, avoids to ambient enviroment
With the pollution of water, it can directly be discharged on automobile and transport outward, carry out dry heap.
Detection control unit includes flue gas on-line checking device, temperature sensor, pressure transmitter, differential pressure transmitter, liquid level
Transmitter, electromagnetic flowmeter, Remote control valve and control room.Discharged flue gas pollutant content data is through flue gas on-line checking device
Control room is sent to after detection, the detection signal that control room is transmitted according to flue gas on-line checking device contains exhaust gas dust content, nitrogen
Amount, sulfur content and moisture each unit equipment operation condition are adjusted, according to the biography being arranged in each unit equipment, pipeline
The information of the transmission such as sensor, transmitter carries out corresponding automation visual operation or manual operation.
The utility model advantageous effect：Reasonable design is practical, can be used for coal-fired, the discharged flue gas of gas industry boiler net
Change, treatment quantity is adjustable according to boiler emission amount size, and the flue gas high-effective dust-removing desulfurization being suitable under the high nitrogen environment of high-sulfur is de-
Nitre processing.Denitrating tower removes NO with oxidizing processXAnd SO2, avoid the viscosity corrosion matter generated during traditional SCR denitration
NH4HSO4Avoid equipment due to catalyst poisoning fails with oxidant alternative catalysts the corrosion and damage of back-end ductwork equipment
The case where parking, occurs.Desulfurizing tower is more by the way that dynamic liquid film exchange area, flat defogger, high-efficiency cyclone dedusting demister etc. is arranged
Weight demisting dust-extraction unit and liquid collecting reflux realize the deep removal to contained humidity, dust etc. in flue gas, improve lye
Utilization rate reduces water resource waste.Above-mentioned entire desulphurization denitration process is relatively low to temperature, pressure requirements, greatly reduces energy consumption.
Blender is set in circular response pond in gypsum press filtration unit, makes pulverized limestone and in desulfurizing tower reaction solution stir chamber
Na2SO4Solution, which comes into full contact with, is obtained by the reaction high-purity C aSO4Product, while preventing CaSO4Accumulation.Gained CaSO4Suspension is through pressure
Filter is handled, and water content can be down to 6%-10%, has higher use value, can be used as industrial materials and construction material carries out outer sell.
The present apparatus is externally arranged purifying smoke by flue gas detector and is monitored, and control room is realized according to Real-time Monitoring Data situation to dress
The automation mechanized operation set saves cost of human resources, securely and reliably, realizes the qualified discharge of boiler smoke.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model denitrating tower structural schematic diagram；
Fig. 3 is the utility model Structure of Flue Gas Desulfuration Absorbing schematic diagram.
Specific implementation mode
As shown in Figure 1 to Figure 3, a kind of C10 or less monomers alkane production desulphurization denitration complexes, mainly by boiler 1,
Cyclone separator 2, air preheater 3, wind turbine I 4, box pulse blowback bag-type dust collector 5, thermocouple 6, wind turbine II 7, denitrating tower
8, denitrating tower reaction solution stir chamber 8.1, gas inlet 8.2, oxidant liquid spray tube 8.3, denitrating tower dynamic liquid film exchange area
8.4, clean spray tube 8.5, demisting floor 8.6, denitrating tower flue 8.7, desulfurizing tower 9, reaction solution stir chamber 9.1, take off
Sulphur tower flue gas room 9.2, orifice plate flue gas even distribution device 9.3, desulfurization tower packing 9.4, lye reflux spray tube 9.5, the equal gas-bearing formation of desulfurizing tower
9.6, semicanal liquid collecting return duct 9.7, lye spray tube 9.8, flat defogger 9.9, flat defogger cleans spray 9.10, de-
Sulphur tower dynamic liquid film exchange area 9.11, dynamic liquid film exchange area spray 9.12, high-efficiency cyclone dedusting demister 9.13, efficient rotary
Flow dedusting demister spray 9.14, exhaust pipe 9.15, desulfurization internal circulation pump A10, desulfurization internal circulation pump B11, alkali liquid tank 12, desulfurization
Tower circulatory pool 13, desulfurizing tower spray pump 14, desulfurizing tower reflux pump 15, denitration circulatory pool 16, denitrating tower spray pump 17, denitration reflux
Pump 18, desulfurization column bottoms pump 19, oxidant tank 20, lime powder bin 21, circular response pond 22, feed intake pump 23, plate and frame filter press 24,
Spray pump 25 is cleaned, reservoir 26, control room 27, process water 28 and flue gas on-line checking device 29 are constituted.
Referring to Fig.1, cyclone separator, 2 are connected to 1 exhaust uptake of boiler, and cyclone separator 2 passes through pipeline and air preheat
Device 3 is connected to, and the outlet of air preheater 3 is connected to wind turbine I 4, and wind turbine I 4 is connected by pipeline and box pulse blowback bag-type dust collector 5
Logical, the outlet of box pulse blowback bag-type dust collector 5 is connected to thermocouple 6, and is connected to wind turbine II 7 by pipeline, and wind turbine II 7 passes through
Pipeline is connected to denitrating tower gas inlet 8.2, and oxidant tank 20 is connected to by pipeline with denitration circulatory pool 16, and denitration circulatory pool is logical
It crosses pipeline with denitrating tower spray pump 17 to be connected, the outlet of denitration spray pump 17 is connected by pipeline with oxidant liquid spray tube 8.3, is taken off
8.1 bottom of nitre tower reaction solution stir chamber is connected equipped with pipeline with 18 import of denitrating tower reflux pump, 18 outlet of denitrating tower reflux pump
Line is passed through denitration circulatory pool 16, and 8 pipeloop of denitrating tower is separately connected desulfurization internal circulation pump A10 and desulfurization internal circulation pump B11, takes off
Nitre tower 8 is connected to by denitrating tower fume pipe 8.7 with the desulfurizing tower smoke chamber 9.2 of desulfurizing tower 9, and alkali liquid tank 12 passes through pipeline and desulfurization
Tower circulatory pool 13 be connected to, semicanal liquid collecting return duct 9.7 by pipeline respectively with reaction solution stir chamber 9.1 and desulfurizing tower reflux pump 15
Import is connected, and 15 outlet line of desulfurizing tower reflux pump is passed through desulfurizing tower circulatory pool 13, and desulfurizing tower circulatory pool 13 is by pipeline and takes off
14 inlet communication of sulphur tower spray pump, the outlet of desulfurizing tower spray pump 14 are connected by pipeline with lye reflux spray tube, and reaction solution stirs
It mixes 9.1 bottom of chamber equipped with pipeline to be connected with 19 import of desulfurization column bottoms pump, 19 outlet line of desulfurization column bottoms pump is passed through circular response pond
22,21 bottom discharge mouth of lime powder bin is connected with circular response pond 22.Circular response pond 22 passes through pipeline and 23 imports of pump that feed intake
It is connected, 23 outlet of pump that feeds intake is connected by pipeline with 24 funnel type feed inlet of plate and frame filter press, 24 outlet line of plate and frame filter press
It is passed through in reservoir 26, reservoir 26 is connected by pipeline with cleaning 25 import of spray pump, 25 outlet line of cleaning spray pump end
It is terminated with round spray head, is located at plate and frame filter press top, desulfurizing tower top is exhaust pipe 9.15, and 9.15 outer wall of exhaust pipe is equipped with
Flue gas on-line checking device 29, flue gas on-line checking device 29 is by concentrating circuit to be connected with control room 27, and 28 pipeline of process water is all the way
Desulfurizing tower 9 is connected, another way connects denitrating tower 8.
With reference to Fig. 2, it is provided, in sequence from bottom to top, with denitrating tower reaction solution stir chamber 8.1 inside denitrating tower, gas inlet 8.2,
Spray tube 8.5, demisting floor 8.6, denitrating tower cigarette are cleaned in oxidant liquid spray tube 8.3, denitrating tower dynamic liquid film exchange area 8.4
Tracheae 8.7.
With reference to Fig. 3, reaction solution stir chamber 9.1, desulfurizing tower smoke chamber 9.2, hole are provided, in sequence from bottom to top, with inside desulfurizing tower
Plug of tobacco gas uniform device 9.3, desulfurization tower packing 9.4, lye reflux spray tube 9.5, the equal gas-bearing formation 9.6 of desulfurizing tower, semicanal liquid collecting reflux
Pipe 9.7, lye spray tube 9.8, flat defogger 9.9, flat defogger cleaning spray 9.10, desulfurizing tower dynamic liquid film exchange area
9.11, dynamic liquid film exchange area spray 9.12, high-efficiency cyclone dedusting demister 9.13, high-efficiency cyclone dedusting demister spray
9.14, exhaust pipe 9.15,9.15 outer wall of exhaust pipe is equipped with flue gas on-line checking device 29.
The utility model technological process：
Dust removing units：The flue gas being discharged by 1 smoke exhaust pipe of boiler, is pumped through cyclone separator 2 to air preheater 3, in sky
In air preheater 3 by with boiler precombustion air heat-exchange, by flue-gas temperature control within the scope of 80-110 DEG C, after preheated
Flue gas is sent through the drum of wind turbine I 4 to box pulse blowback bag-type dust collector 5, and ash-laden gas is by box pulse blowback bag-type dust collector 5
Interior gas-guide tube enters unit leaching room, and the dust particles in ash-laden gas fall directly into ash bucket after being detached by natural subsidence,
Remaining ash-laden gas enters raising middle flask filtering area in gas-guide tube with air-flow, filter bag arranged in rows, dust built in raising middle flask filtering area
Grain is attracted to filter bag surface, and filter bag outlet top is furnished with injection tube, and face filter bag center is equipped with injection mouth on the downside of injection tube, often
It is all provided in root injection tube there are one impulse electromagnetic valve, injection tube is communicated with compressed air bag.When deashing, impulse electromagnetic valve is opened,
Compressed air sprays into filter bag through injection tube, causes filter bag expansion shake, forms blowback air-flow from inside to outside, the outer dust of filter bag
Grain is eliminated according to effect of inertia, falls into ash bucket, 99.9% or more dust can be removed by the flue gas of raising middle flask filtering area.It crosses
Flue gas after filter is discharged through filter bag through upper box, exhaust duct.Box pulse blowback bag-type dust collector 5 is discharged in thermocouple 6
Flue gas carries out temperature monitoring, and monitoring information is sent to control room, when neat stress temperature exceeds 50-60 DEG C of range, control
Room is accelerated air-flow by DCS remote controls wind turbine I 4 and wind turbine II 7 and is exchanged, by exhaust duct outlet neat stress temperature control in 50-
60 DEG C, neat stress is advertised through wind turbine II 7 to denitration unit.
The program that impulse electromagnetic valve is set by control room was opened once every 0.5-1 hours, and the opening time is 5-10 points
Clock.When box pulse blowback bag-type dust collector 5 is often completed the blowback leaching period once set, it is small that defeated ash equipment is about spaced 3-4
Shi Jinhang once unloads ash.
Denitration unit：From wind turbine II 7 come neat stress through gas inlet 8.2 enter denitrating tower 8, neat stress in denitrating tower with
Air-flow rises passes through oxidant spray tube 8.3 successively, and spray tube 8.5, demisting building are cleaned in denitrating tower dynamic liquid film exchange area 8.4
Layer 8.6 imports desulfurization unit by denitrating tower fume pipe 8.7.Oxidant in oxidant tank 20 is put into denitration circulatory pool through pipeline
In 16,16 inner oxidizing agent of denitration circulatory pool is delivered to oxidant liquid spray tube through denitrating tower spray pump 17.Oxidized dose of liquid spray
The reaction product that the oxidant and 8.3 lower section of oxidant liquid spray tube that pipe 8.3 sprays generate, the work that cleaning spray tube 8.5 sprays
The equal natural subsidence of drop to the denitrating tower reaction solution that skill water, denitrating tower dynamic liquid film exchange area 8.4 and demisting floor 8.6 are collected stirs
It mixes in chamber 8.1, the funnel type collector tube being arranged through 8.1 bottom of denitrating tower reaction solution stir chamber enters denitrating tower reflux pump（18）,
The outlet of denitrating tower reflux pump 18 is passed through denitration circulatory pool 16.The NaClO for being 60-65% equipped with mass fraction in denitration circulatory pool 16
Solution, pH value control are used in denitration unit as oxidant in 5.5 or so, NaClO solution, 60-65% NaClO solution warp
Oxidant spray tube（8.3）After atomization sprays, reacting with the neat stress into denitrating tower 8, reaction temperature is 50-60 DEG C,
NO in flue gasXTransformation efficiency is up to 99% or more.Contained SO in flue gas simultaneously2Also it reacts with NaClO solution, obtained HSO3 -
Product can promote NOXIt absorbs, this process can make SO in flue gas2Sorption enhanced rate is up to 75%.
Desulfurization unit：Neat stress enters desulfurizing tower smoke chamber 9.2 by denitrating tower fume pipe 8.7, rises through airflow function
To orifice plate flue gas even distribution device 9.3, through shunt it is uniformly distributed after the lye that sprays with lye reflux spray tube 9.5 of neat stress in desulfurizing tower
Neutralization reaction is carried out in filler 9.4, the neat stress after preliminary desulphurization reaction is after the equal shunting of gas-bearing formation 9.6 of desulfurizing tower is uniformly distributed, warp
Semicanal liquid collecting return duct 9.7 is crossed, deep desulfuration reaction, 98% or more removing are carried out again with the lye that lye spray tube 9.8 sprays
SO2, the neat stress after the reaction of double alkali successively by flat defogger 9.9, move by desulfurizing tower dynamic liquid film exchange area 9.11
State liquid film exchange area spray 9.12, high-efficiency cyclone dedusting demister 9.13 and high-efficiency cyclone dedusting demister spray 9.14 are removed
After dirt demisting, into exhaust pipe 9.15, discharged after the detection of flue gas on-line checking device 29.NaOH solution in alkali liquid tank 12 passes through
Pipeline enters desulfurizing tower circulatory pool 13, the lime aqueous suspension obtained after the process water of the collection of semicanal liquid collecting return duct 9.7 and reaction
Liquid each leads into 15 import of reaction solution stir chamber 9.1 and desulfurizing tower reflux pump, part lye and Na by manifold2SO4Solution
Mixed liquor is passed through desulfurizing tower circulatory pool 13 through desulfurizing tower reflux pump 15, and desulfurizing tower circulatory pool 13 passes through pipeline and desulfurizing tower spray pump
14 inlet communications, the outlet of desulfurizing tower spray pump 14 are connected by pipeline with lye reflux spray tube, 9.1 bottom of reaction solution stir chamber
Equipped with funnel type liquid collecting pipeline, the part Na in reaction solution stir chamber 9.12SO4Solution mixed liquor is defeated by desulfurization column bottoms pump 19
It send to gypsum press filtration unit, lye and Na in partial reaction liquid stir chamber 9.12SO4Solution mixed liquor in desulfurization respectively by following
Ring pump A10 and desulfurization internal circulation pump B11 is transported in lye reflux spray tube 9.5.
Gypsum press filtration unit：The Na that desulfurization column bottoms pump 19 conveys2SO4Solution is passed through through outlet line in circular response pond 22,
With pulverized limestone reaction in circular response pond 22 that 21 bottom discharge mouth of lime powder bin is launched, CaSO is generated4Suspension.Cycle is anti-
The lime water slurry in pond 22 is answered to enter plate and frame filter press 24 by the pump 23 that feeds intake, plate and frame filter press 24 will be big in suspension
Partial moisture removes, by CaSO4Precipitation particle is pressed into mould, and filtered moisture is passed through filter through 24 outlet line of plate and frame filter press
In liquid pool 26, partial moisture is sprayed by cleaning the round spray head of the outlet line end connection of spray pump 25 in reservoir 26
To plate and frame filter press 24, moisture in plasterboard is made to be maintained at 6%-10%.
Detection control unit：A whole set of desulfuring and denitrifying apparatus uses DCS control systems, by every analysis of system configuration and
Measuring instrument and the flue gas on-line checking device 29 of 9.15 outer wall of desulfurizing tower top exhaust pipe setting are to temperature, pressure, temperature in device
The data such as difference, pressure difference, concentration, dust content and discharged gas fume ingredient are monitored in real time, and monitoring signals control electricity by instrument
Road is sent in control room 27, and operating personnel can carry out remotely certainly package unit equipment according to monitoring data in control room 27
Dynamicization and on-site manual control.
Claims (9)
1. a kind of C10 or less monomers alkane production desulphurization denitration complexes, it is characterised in that：Cyclone separator（2）With pot
Stove（1）Exhaust uptake is connected to, cyclone separator（2）Pass through pipeline and air preheater（3）Connection, air preheater（3）Outlet
With wind turbine I（4）Connection, wind turbine I（4）Pass through pipeline and box pulse blowback bag-type dust collector（5）Connection, box pulse blowback cloth
Bag dust collector（5）Outlet is connected to thermocouple（6）, and pass through pipeline and wind turbine II（7）Connection, wind turbine II（7）By pipeline and take off
Nitre tower flue gas import（8.2）Connection, oxidant tank（20）Pass through pipeline and denitration circulatory pool（16）Connection, denitration circulatory pool pass through
Pipeline and denitrating tower spray pump（17）It is connected, denitrating tower spray pump（17）Outlet passes through pipeline and oxidant liquid spray tube（8.3）
It is connected, denitrating tower reaction solution stir chamber（8.1）Bottom is equipped with pipeline and denitrating tower reflux pump（18）Import is connected, denitrating tower reflux
Pump（18）Outlet line is passed through denitration circulatory pool（16）, denitrating tower（8）Pipeloop is separately connected desulfurization internal circulation pump A（10）With
Desulfurization internal circulation pump B（11）, denitrating tower（8）Pass through denitrating tower fume pipe（8.7）With desulfurizing tower（9）Desulfurizing tower smoke chamber
（9.2）Connection, alkali liquid tank（12）Pass through pipeline and desulfurizing tower circulatory pool（13）Connection, semicanal liquid collecting return duct（9.7）Pass through pipe
Line respectively with reaction solution stir chamber（9.1）With desulfurizing tower reflux pump（15）Import is connected, desulfurizing tower reflux pump（15）Outlet line
It is passed through desulfurizing tower circulatory pool（13）, desulfurizing tower circulatory pool（13）Pass through pipeline and desulfurizing tower spray pump（14）Inlet communication, desulfurization
Tower spray pump（14）Outlet is connected by pipeline with lye reflux spray tube, reaction solution stir chamber（9.1）Bottom be equipped with pipeline with
Desulfurization column bottoms pump（19）Import is connected, desulfurization column bottoms pump（19）Outlet line is passed through circular response pond（22）, lime powder bin（21）
Bottom discharge mouth and circular response pond（22）It is connected, circular response pond（22）Pass through pipeline and the pump that feeds intake（23）Import is connected, and throws
Material pump（23）Outlet passes through pipeline and plate and frame filter press（24）Funnel type feed inlet is connected, plate and frame filter press（24）Outlet line is logical
Enter reservoir（26) in, reservoir（26）Pass through pipeline and cleaning spray pump（25）Import is connected, and cleans spray pump（25）Outlet
End of line is connected to round spray head, is located at plate and frame filter press top, and desulfurizing tower top is exhaust pipe（9.15）, exhaust pipe
（9.15）Outer wall is equipped with flue gas on-line checking device（29）, flue gas on-line checking device（29）By concentrating circuit and control room（27）Phase
Even, process water（28）Pipeline connects desulfurizing tower all the way（9）, another way connection denitrating tower（8）.
2. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1, feature exist
In：The denitrating tower（8）Inside is provided, in sequence from bottom to top, with denitrating tower reaction solution stir chamber（8.1）, gas inlet（8.2）, oxygen
Agent liquid spray tube（8.3）, denitrating tower dynamic liquid film exchange area（8.4）, clean spray tube（8.5）, demisting floor（8.6）, take off
Nitre tower flue gas pipe（8.7）.
3. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：The desulfurizing tower（9）Inside is provided, in sequence from bottom to top, with reaction solution stir chamber（9.1）, desulfurizing tower smoke chamber（9.2）, hole
Plug of tobacco gas uniform device（9.3）, desulfurization tower packing（9.4）, lye reflux spray tube（9.5）, the equal gas-bearing formation of desulfurizing tower（9.6）, semicanal
Liquid collecting return duct（9.7）, lye spray tube（9.8）, flat defogger（9.9）, flat defogger cleaning spray（9.10）, desulfurization
Tower dynamic liquid film exchange area（9.11）, dynamic liquid film exchange area spray（9.12）, high-efficiency cyclone dedusting demister（9.13）, efficiently
Rotational flow dust-removing demister sprays（9.14）, exhaust pipe（9.15）.
4. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：Desulfurizing tower dynamic liquid film exchange area（9.11）Two dedusting demisting chambers are internally provided with, dedusting demisting intracavitary loads PP beads,
Filling height is the 1/2 of dedusting demisting chamber height.
5. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：The semicanal liquid collecting return duct（9.7）Above the equal gas-bearing formation of desulfurizing tower, it is divided into upper layer and lower layer, each layer semicanal liquid collecting
Pipeline is arranged in parallel successively, and lower layer's semicanal collector tube and upper layer semicanal collector tube are staggered, and every layer of semicanal collector tube is at 15 °
Overturning angle.
6. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：Lye spray tube（9.8）Positioned at semicanal liquid collecting return duct（9.7）Top, by distribution pipe network and screw type rotary nozzle group
At screw type rotary nozzle is uniformly distributed in spray tube, and nozzle is downward, is covered entirely to the flue gas from the equal fluid layer of desulfurizing tower
Lid formula sprays.
7. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：Flat defogger（9.9）Positioned at lye spray tube（9.8）Top is made of four layers of streamline vane, and flat defogger is clear
Washing and spraying is made of alternating expression spray pipe network and solid cone spray nozzle, and shower water spray angle is 90-120 °, sprays solid circular cone,
Ensure that blade is all capped.
8. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：Desulfurizing tower dynamic liquid film exchange area（9.11）Using gas-liquid mass transfer liquid film absorption techniques.
9. a kind of C10 or less monomers alkane production desulphurization denitration complexes according to claim 1 or 2, feature
It is：High-efficiency cyclone dedusting demister is mainly made of external mounting bracket, dedusting demisting chamber and PP beads, and the high-efficiency cyclone removes
Dirt demister（9.13）According to the operation program that control room gives, depth demisting dedusting is carried out to neat stress, utilizes PP beads
The centrifugal force that high speed rotary motion generates will be fallen by the drop and minute dusts of demister in demister inner wall, and by interior
Eddy flow substance is drained into semicanal liquid collecting return duct by the collecting tank of wall（9.7）It is handled.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364628A (en) * | 2018-12-13 | 2019-02-22 | 枣庄市泰瑞精细化工有限公司 | A kind of flue gas pollutant minimum discharge system of coal-burning boiler |
| CN110180355A (en) * | 2019-06-10 | 2019-08-30 | 东营市俊源石油技术开发有限公司 | A kind of wet-dry change combined desulfurization and denitration running gear and method |
| WO2021088526A1 (en) * | 2019-11-05 | 2021-05-14 | 中冶长天国际工程有限责任公司 | Flue gas multi-pollutant synergistic purification process and apparatus |
| CN116899348A (en) * | 2023-09-14 | 2023-10-20 | 宁津禾洁生物科技有限公司 | Furfural slag boiler flue gas dust remover for furfural production |
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2017
- 2017-12-06 CN CN201721673785.4U patent/CN207694581U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109364628A (en) * | 2018-12-13 | 2019-02-22 | 枣庄市泰瑞精细化工有限公司 | A kind of flue gas pollutant minimum discharge system of coal-burning boiler |
| CN110180355A (en) * | 2019-06-10 | 2019-08-30 | 东营市俊源石油技术开发有限公司 | A kind of wet-dry change combined desulfurization and denitration running gear and method |
| WO2021088526A1 (en) * | 2019-11-05 | 2021-05-14 | 中冶长天国际工程有限责任公司 | Flue gas multi-pollutant synergistic purification process and apparatus |
| CN116899348A (en) * | 2023-09-14 | 2023-10-20 | 宁津禾洁生物科技有限公司 | Furfural slag boiler flue gas dust remover for furfural production |
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