CN206521426U - A kind of coke oven cycle flue gas dual control pipe network device - Google Patents
A kind of coke oven cycle flue gas dual control pipe network device Download PDFInfo
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- CN206521426U CN206521426U CN201720224414.1U CN201720224414U CN206521426U CN 206521426 U CN206521426 U CN 206521426U CN 201720224414 U CN201720224414 U CN 201720224414U CN 206521426 U CN206521426 U CN 206521426U
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- coke oven
- flue gas
- combustion chamber
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Abstract
The utility model discloses a kind of coke oven cycle flue gas dual control pipe network device, belong to metallurgical, the coke oven for iron field of coking industry.The utility model includes being separated into interconnected two parts in the alternate configuration of carbonization chamber and combustion chamber in coke oven, coke oven, combustion chamber by flue, and the bottom of a portion is provided with combustion chamber port A, and the bottom of another part is provided with combustion chamber port B；Circulating fan is installed on the chimney connection of flue gas house steward and coke oven, flue gas house steward；Disconnected two space is divided into blending bin, each space is in charge of by single flue gas respectively to be connected with flue gas house steward；Combustion chamber port A is connected with a space in chimney, blending bin and the fuel inlet of coke oven respectively, and combustion chamber port B is connected with another space in chimney, blending bin and the fuel inlet of coke oven respectively.The utility model is inexpensive, transformation is optimized to low difficulty of construction to existing coke oven, solves the problem of coke oven discharged nitrous oxides are exceeded.
Description
Technical field
The utility model belongs to metallurgical, the coke oven for iron field of coking industry, is related to and reduces what coke oven nitrogen oxides was produced
Device and method, more specifically to a kind of coke oven cycle flue gas dual control pipe network device.
Background technology
The pollutant of coke oven smoke stack emission is mainly SO2、NOxAnd flue dust etc., pollutant is in overhead point source continuity in a organized way
Discharge, is to pollute one of primary pollution source of air.Combustion gas can generate nitrogen oxides NO when coke oven vertical flame path burnsx, by it
The mechanism of generation point has three kinds of temperature heating power type, hydrocarbon fuel Quick-type and oxygen-containing component fuel type.When coefficient of excess air α=
1.1, when air preheat is to 1100 DEG C, 2350 DEG C of coke-stove gas theoretical temperature combustion, blast furnace gas theoretical temperature combustion is 2150
℃.It is generally acknowledged that actual combustion temperature will be less than this value, actual combustion temperature is built between theoretical temperature combustion and the quirk determined
Between temperature.Ignition temperature is to temperature thermal NOxGeneration has conclusive effect.When ignition temperature is less than 1500 DEG C,
NOxAmount is seldom, but when temperature is higher than 1500 DEG C, NOxAmount exponentially increases sharply, and coke-stove gas actual combustion temperature
At 1800 DEG C or so, nitrogen oxides yield will exceed 3000ppm.Nitrogen oxides (NOx) includes NO, NO2、N2O、N2O3、N2O4
Deng.NOxIt is one of initiator of photochemical fog, by complicated chemical change formation photochemical fog and acid rain, endangers people
Class health and destruction ecological environment.What on October 1st, 2012 implemented《Coking chemistry emission of industrial pollutants standard》To coke oven NOx
Discharge has NO in strict demand, coke oven smoke stack emission waste gasXContent is that newly-built enterprise performs 500mg/m3；Existing enterprise performs
800mg/m3(time that performs is to stop on October 1st, 2012 to 2014 annual December 31, and 500mg/ is performed from 1 day January in 2015
m3), in depth study coke oven low NOx combusting technology and show important especially.Coke oven is mainly used to produce high-quality coke, its fuel master
To be blast furnace gas or coke-stove gas, in recent years coke oven flue gas NOxDischarge index continue it is not up to standard caused enterprise highly weight
Depending on various control measures are born in succession, but regulation effect is not obvious.
Main flume exhaust gas denitration technology is broadly divided into watershed management and end treatment.It is now industrial wide variety of de-
Nitre technology SCR (selective catalytic reduction) and SNCR (SNCR method) is end-of-pipe control technology.But
SNCR denitration efficiency is low, 70% is usually no more than, reducing agent consumption used is larger, while SNCR methods are in burner hearth internal spray
Reducing agent, can be impacted to production technology.The characteristics of coke oven production technology, carries out spray ammonia not in the inside of coke oven and takes off
Nitre, therefore SNCR methods do not apply to the denitration of coke oven flue gas (waste gas).SCR is gradually applied to fire coal since the early 1980s
Denitration of boiler smoke, has been acknowledged as the mainstream technology of denitrating flue gas so far.SCR (Selective
Catalytic Reduction, SCR) technology is a kind of ripe commercial NOxControl process technology.Denitration principle be
At 280-400 DEG C, the reducing agent containing ammonia is sprayed into flue gas, in the presence of catalyst, reducing agent is selectively flue gas
In NOXIt is reduced to the N of nontoxic pollution-free2And H2O, reducing agent can be liquefied ammonia, ammoniacal liquor, urea, hydrocarbon (such as methane,
Propylene etc.) etc., but SCR investments are high, used Catalyst Production and post processing cost are also higher, coke oven flue gas temperature
Relatively low, sulfide and moisture therein influence larger to catalyst, when SCR method is applied to coke oven denitration, there is transformation space
Small the problems such as.Watershed management mainly uses sectional combustion technology and flue gas interior circulation technology, but the coke oven for having gone into operation,
Coke oven construction can not change, and the difficulty of Optimizing Reconstruction is larger, and therefore, it is difficult to use sectional combustion technology and flue gas interior circulation technology
Solve the problems, such as coke oven discharged nitrous oxides.
Solve the problems, such as that the technical scheme of coke oven discharged nitrous oxides is also disclosed using flue gas recirculation technology in the prior art,
Such as patent publication No.：The A of CN 105295962, publication date：On 02 03rd, 2016, invention and created name was：One kind reduction is burnt
The method and device of discharged nitrous oxides in stove stack gases, this application case discloses nitrogen oxygen in a kind of reduction coke oven flue waste gas
The method of compound discharge, comprises the following steps：(1) circulating flue gas of oxygen and coke oven is passed through in air mixing equipment and mixed, turned into
Mix O in combustion-supporting gas, mixing combustion-supporting gas2Content 0-100%；(2) coke-stove gas and mixing combustion-supporting gas are passed into
Coke oven flue waste gas is produced after being burnt in coke oven combustion chamber；(3) the coke oven flue waste gas produced in step (2) is cold by heat exchanger
But after, generation mixing combustion-supporting gas after a part of coke oven flue waste gas is mixed through flue gas recirculation blower fan into air mixing equipment with pure oxygen
Burning is participated in, another part coke oven flue waste gas is directly discharged after smoke exhaust fan into chimney.This application case is from source
Control the nitrogen oxides of coke oven flue waste gas to produce, N is avoided by using pure oxygen and circulating flue gas mixing2Introducing, make Jiao
Discharged nitrous oxides meet national standard in stove stack gases, but still there is following defect：(1) the oxygen manufacturing cost used
It is higher, transport and store cumbersome, coke oven production environment is severe, oxygen conveying is dangerous higher；(2) in oxygen and flue gas
After fuel gas mixing, coke oven combustion is then fed into, this process shortens equivalent to premixed combustion, combustion flame, carbonizes room temperature
Uniformity is reduced, and influences coke quality；(3) outer circulation flue-gas temperature is higher, containing a small amount of fuel gas, oxygen and outer circulation cigarette
There is the possibility of detonation in gas mixed process.
And for example patent publication No.：The A of CN 105670650, publication date：On 06 15th, 2016, invention and created name was：Subtract
The device and method that few coke oven nitrogen oxides is produced, this application case discloses a kind of device for reducing the generation of coke oven nitrogen oxides, bag
Dual direction axial blower fan, electric control system, measurement apparatus are included, dual direction axial blower fan is arranged at point flue corridor of coke oven,
One air port is connected by pipeline with the exhaust steam passage of coke oven, and another air port is connected by pipeline with the air duct of coke oven；
The rotating speed of electric control system control dual direction axial blower fan, steering；The nitrogen oxides of waste gas in measurement apparatus detection pipeline
Concentration.This application case is without changing the internal structure of coke oven, and the nitrous oxides concentration and nitrogen oxides that can significantly reduce waste gas be exhausted
To discharge capacity, improve enterprise's ambient atmosphere environment.But, this application case two-way is followed in the middle of two groups of make and break regulating valves using one
Ring blower fan, each carbonization chamber needs to need Fans more than 100, cost of investment and operation in two circulating fans, work progress
Cost is all higher, and fan operation noise is larger, the artificial operation of influence.
In summary, how with reference to operation coke oven structure, inexpensive, low difficulty of construction to existing coke oven carry out it is excellent
Change transformation, solve the problems, such as coke oven discharged nitrous oxides, be the technical problem of urgent need to resolve in the prior art.
Utility model content
1. the utility model technical problem to be solved
The purpose of this utility model is burnt when being using flue gas recirculation technology solution coke oven discharged nitrous oxides excessive problem
There is provided a kind of coke oven cycle flue gas dual control pipe network device, inexpensive, low difficulty of construction for the larger deficiency of stove Optimizing Reconstruction difficulty
Transformation is optimized to existing coke oven in ground, solves the problem of coke oven discharged nitrous oxides are exceeded.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is：
Carbonization chamber and combustion chamber in coke oven cycle flue gas dual control pipe network device of the present utility model, including coke oven, coke oven
Interconnected two parts are separated into alternate configuration, combustion chamber by flue, the bottom of a portion is provided with combustion chamber
Port A, the bottom of another part is provided with combustion chamber port B；
Also include pacifying on flue gas house steward, circulating fan and blending bin, the chimney connection of flue gas house steward and coke oven, flue gas house steward
Equipped with circulating fan；Be divided into disconnected two space in blending bin, each space respectively by single flue gas be in charge of with
Flue gas house steward connects；
The combustion chamber port A is connected with a space in chimney, blending bin and the fuel inlet of coke oven respectively, institute
Combustion chamber port B is stated to be connected with another space in chimney, blending bin and the fuel inlet of coke oven respectively.
Further improved as the utility model, the top of two spaces is respectively provided with opening and closing in the blending bin
It is in charge of respectively by corresponding open and close controlling case with corresponding flue gas in each space in hermatic door and open and close controlling case, blending bin
Connection.
Further improved as the utility model, the opening and closing hermatic door includes opening and closing seal and opening and closing is sealed
Plate, the opening and closing seal is the ventilating opening for being arranged on some top of space of correspondence in blending bin, and the opening and closing sealing plate is hinged
On ventilating opening and it can seal up ventilating opening.
Further improved as the utility model, the open and close controlling case include lower box and be arranged at lower box it
On upper box, with the openings of upper box bottom be exhanst gas outlet at the top of lower box；
Some of lower box is in charge of connection with corresponding flue gas sideways, and some lateral opening of upper box is flue gas injection
Mouthful, the flue gas injection mouthful some space connection corresponding with blending bin；
The top of seal cover board is connected by connecting rod with corresponding opening and closing sealing plate, and seal cover board is suspended from exhanst gas outlet
Top and exhanst gas outlet can be covered when seal cover board is fallen completely, exhanst gas outlet is surrounded by through the spacing of seal cover board
Bar, the line of adjacent gag lever post is provided with gasket seal.
Further improved as the utility model, in addition to total driving rack, point travelling gear and driving-chain, it is described
Total driving rack is located at the top of blending bin, total driving rack and point equal engaged transmission of travelling gear below, point driving cog
Take turns along its whole circumferential middle part and be provided with middle part escape groove；One end of the driving-chain is connected to some top of space in blending bin
Opening and closing sealing plate, the other end of driving-chain bypass the middle part escape groove and with the opening and closing of another top of space in blending bin
Sealing plate is connected；The driving-chain and the middle part escape groove engaged transmission；The output of total driving rack and reducing motor
Hold engaged transmission.
Further improved as the utility model, in addition to point travelling gear and driving-chain, point travelling gear along its
Whole circumferential middle part is provided with middle part escape groove；One end of the driving-chain is connected to the opening and closing of some top of space blending bin Nei
Sealing plate, the other end of driving-chain bypass the middle part escape groove and with the opening and closing sealing plate of another top of space in blending bin
Connection；The driving-chain and the middle part escape groove engaged transmission；
By chain drive between two neighboring point of travelling gear, some point of travelling gear is driven by motor.
Further improved as the utility model, on-off valve one, combustion chamber are provided between combustion chamber port A and chimney
It is provided between port A and the fuel inlet of coke oven between on-off valve two, combustion chamber port B and chimney provided with on-off valve three, burning
On-off valve four is provided between room port B and the fuel inlet of coke oven.
Further improved as the utility model, the gag lever post is " T " character form structure placed in forward direction；It is described
Connecting rod is L-shaped structure, and one end of connecting rod is connected through the perforate at the top of upper box with seal cover board top, connecting rod it is another
One end and corresponding opening and closing sealing plate connection；Each combustion chamber corresponds to a blending bin respectively, and each blending bin corresponds to one respectively
Individual point of travelling gear.
The application method of coke oven cycle flue gas dual control pipe network device of the present utility model, comprises the following steps：
Step 1: closing circulating fan, on-off valve one and on-off valve four are closed, on-off valve three is opened；
Step 2: mobile total driving rack, under the drive of total driving rack, each point of travelling gear edge is rotated forward,
So that opening and closing hermatic door corresponding with a space in the blending bin of combustion chamber port A connections is remained on；Meanwhile, beat
Open on-off valve two；
Step 3: opening circulating fan；
Step 4: the gaseous fuel of coke oven is burning with air-smoke mixture in a space in blending bin
The bottom of a room part is met burning, and the flue gas of burning generation is arranged to chimney by combustion chamber port B；
Step 5: maintaining after setting time, circulating fan is closed, on-off valve two and on-off valve three is closed, on-off valve is opened
One；
Step 6: mobile total driving rack, under the drive of total driving rack, each point of travelling gear edge is reversely rotated,
So that opening and closing hermatic door corresponding with another space in the blending bin of combustion chamber port B connections is remained on；Meanwhile,
Open on-off valve four；
Step 7: opening circulating fan；
Step 8: the gaseous fuel of coke oven is firing with air-smoke mixture in another space in blending bin
The bottom for burning room another part is met burning, and the flue gas of burning generation is arranged to chimney by combustion chamber port A；
Step 9: maintaining after setting time, repeat step one to step 8.
The application method of coke oven cycle flue gas dual control pipe network device of the present utility model, comprises the following steps：
Step 1: closing circulating fan, on-off valve one and on-off valve four are closed, on-off valve three is opened；
Step 2: passing through some point of travelling gear of motor forward drive so that each point of travelling gear is along forward direction rotation
Turn so that the corresponding hermatic door that is opened and closed in a space in blending bin with combustion chamber port A connections is remained on；Together
When, open on-off valve two；
Step 3: opening circulating fan；
Step 4: the gaseous fuel of coke oven is burning with air-smoke mixture in a space in blending bin
The bottom of a room part is met burning, and the flue gas of burning generation is arranged to chimney by combustion chamber port B；
Step 5: maintaining after setting time, circulating fan is closed, on-off valve two and on-off valve three is closed, on-off valve is opened
One；
Step 6: passing through some point of travelling gear of motor reverse drive so that each point of travelling gear is along reverse rotation
Turn so that the corresponding hermatic door that is opened and closed in another space in blending bin with combustion chamber port B connections is remained on；Together
When, open on-off valve four；
Step 7: opening circulating fan；
Step 8: the gaseous fuel of coke oven is firing with air-smoke mixture in another space in blending bin
The bottom for burning room another part is met burning, and the flue gas of burning generation is arranged to chimney by combustion chamber port A；
Step 9: maintaining after setting time, repeat step one to step 8.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, with following remarkable result：
(1) the utility model the partial fume in chimney is in charge of from flue gas by circulating fan be conveyed into it is right in blending bin
The space answered, circulating fan maintains pipeline pressure, it is ensured that circulating flue gas mixed proportion, meanwhile, pass through two spaces in blending bin
Top be respectively provided with opening and closing hermatic door and open and close controlling case coordinated signals, on the one hand may insure circulating flue gas with helping
Combustion air is synchronously entered in blending bin, after being inhaled into together in combustion chamber again after its synchronized mixes, is on the other hand dexterously fitted
The operating mode of alternate combustion in coke oven combustion room is answered.
(2) the utility model only needs that using a circulating fan flue gas recirculation of whole coke oven can be maintained, and is easy to collection
Middle control so that cost of investment and operating cost are substantially reduced；Wherein, blending bin, opening and closing hermatic door, open and close controlling case, point biography
The parts such as moving gear are arranged at the outside of coke oven, and the transformation to coke oven structure itself is not related to, and the difficulty of Optimizing Reconstruction is smaller,
Complete the transformation to existing coke oven to inexpensive, low difficulty of construction.
(3) partial fume is sent in blending bin and mixed with air by the utility model using dual control circulation pipe network system, drop
The concentration of low burning indoor oxygen, it is to avoid the too high generation of burning concentrations, local temperature, and the nitrogen oxygen in circulating flue gas
Compound can suppress new NO_x formation, make NO in existing coke oven flue gasxContent 30-80% is greatly reduced, in most feelings
Under condition, the setting of coke oven flue gas denitration device is eliminated, reaches that national coke oven flue gas puts standard；It is simultaneously also fiery in increase combustion chamber
Flame length, improves temperature homogeneity, is conducive to improving coke quality；And dual control circulation pipe network system can need and lead according to production
It is dynamic to close, the operation of original production system is not influenceed.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the internal structure schematic diagram of coke oven in embodiment 1；
Fig. 2 is the structural representation of the coke oven cycle flue gas dual control pipe network device of embodiment 1；
Fig. 3 be Fig. 2 in along A-A to cross section structure diagram；
Fig. 4 is the structural representation of open and close controlling case in Fig. 2；
Fig. 5 is the flow chart of the application method of the coke oven cycle flue gas dual control pipe network device of embodiment 1；
Fig. 6 is the structural representation of the coke oven cycle flue gas dual control pipe network device of embodiment 2；
Fig. 7 is the flow chart of the application method of the coke oven cycle flue gas dual control pipe network device of embodiment 2.
Label declaration in schematic diagram：
101st, carbonization chamber；102nd, combustion chamber；1021st, combustion chamber port A；1022nd, combustion chamber port B；103rd, flue；2、
Total driving rack；3rd, travelling gear is divided；301st, middle part escape groove；4th, driving-chain；5th, it is opened and closed hermatic door；6th, connecting rod；7th, it is opened and closed
Control cabinet；701st, lower box；702nd, upper box；703rd, seal cover board；704th, gag lever post；705th, gasket seal；706th, flue gas goes out
Mouthful；707th, flue gas injection mouthful；8th, flue gas is in charge of；9th, flue gas house steward；10th, circulating fan；11st, chimney；12nd, blending bin；13rd, chain
Bar.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Therefore, below to providing in the accompanying drawings
The detailed description of embodiment of the present utility model be not intended to limit claimed scope of the present utility model, but only
Represent selected embodiment of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, the scope of the utility model protection is belonged to.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or
It is the orientation or position relationship usually put when the utility model product is used, is for only for ease of description the utility model and letter
Change description, it is impossible to be interpreted as to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing
Description, and it is not intended that indicating or implying relative importance.
In description of the present utility model, in addition it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " etc. should be interpreted broadly, for example, it may be being fixedly connected or detachably connecting
Connect, or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, middle matchmaker can also be passed through
Jie is indirectly connected to, and can be the connection of two element internals.For the ordinary skill in the art, can be with concrete condition
Understand concrete meaning of the above-mentioned term in the utility model.
To further appreciate that content of the present utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.
Embodiment 1
With reference to Fig. 1-4, the coke oven cycle flue gas dual control pipe network device of the present embodiment, including coke oven, the carbonization chamber in coke oven
101 and the alternate configuration in combustion chamber 102, interconnected two parts are separated into by flue 103 in combustion chamber 102, wherein one
Partial bottom is provided with combustion chamber port A 1021, and the bottom of another part is provided with combustion chamber port B 1022；Also include flue gas
House steward 9, circulating fan 10 and blending bin 12, flue gas house steward 9 are connected with the chimney 11 of coke oven, and circulation is provided with flue gas house steward 9
Blower fan 10；Disconnected two space is divided into blending bin 12,8 and flue gas are in charge of in each space by single flue gas respectively
House steward 9 connects；Combustion chamber port A 1021 respectively with a space in chimney 11, blending bin 12 and the fuel inlet of coke oven
Connection, combustion chamber port B 1022 connects with the fuel inlet of another space in chimney 11, blending bin 12 and coke oven respectively
Connect.
The top of two spaces is respectively provided with opening and closing hermatic door 5 and open and close controlling case 7, blending bin 12 in blending bin 12
Each space 8 connections are in charge of with corresponding flue gas by corresponding open and close controlling case 7 respectively.Specifically, opening and closing hermatic door 5 is wrapped
Opening and closing seal and opening and closing sealing plate are included, opening and closing seal is the ventilation for being arranged on some top of space of correspondence in blending bin 12
Mouthful, opening and closing sealing plate is hinged on ventilating opening and can seal up ventilating opening.Open and close controlling case 7 includes lower box 701 and set
The openings of upper box 702 on lower box 701, the top of lower box 701 and the bottom of upper box 702 are exhanst gas outlet 706；
Some of lower box 701 is in charge of 8 connections with corresponding flue gas sideways, and some lateral opening of upper box 702 is flue gas injection mouthful
707, some space connection corresponding with blending bin 12 of flue gas injection mouthful 707；The top of seal cover board 703 passes through connecting rod 6
With corresponding opening and closing sealing plate connection, specifically, connecting rod 6 is L-shaped structure, one end of connecting rod 6 passes through the top of upper box 702
The top of perforate and seal cover board 703 be connected, the other end of connecting rod 6 is connected with the corresponding sealing plate that is opened and closed；Seal cover board 703
The top and seal cover board 703 for being suspended from exhanst gas outlet 706 can be covered completely when falling exhanst gas outlet 706 (seal cover board 703 by
The pulling force of connecting rod 6 and rise, fallen by self gravitation and cover exhanst gas outlet 706 completely), the surrounding of exhanst gas outlet 706
The gag lever post 704 of seal cover board 703 is provided through, the line of adjacent gag lever post 704 is provided with gasket seal 705, gag lever post 704
Design ensure seal cover board 703 be in close contact in dropping process with gasket seal 705, wherein, gag lever post 704 be in forward direction
" T " character form structure placed, can prevent gasket seal 705 from being come off from gag lever post 704.Also include total driving rack 2, point transmission
Gear 3 and driving-chain 4, total driving rack 2 are located at the top of blending bin 12, total driving rack 2 and point travelling gear 3 below
Equal engaged transmission, the output end engaged transmission of total driving rack 2 and reducing motor, point travelling gear 3 is along along its whole circumference
Portion is provided with middle part escape groove 301；The opening and closing sealing plate that one end of driving-chain 4 is connected to some top of space blending bin 12 Nei (is opened
The pulling force for closing the driven chain 4 of sealing plate is opened, and is closed by self gravitation), the other end of driving-chain 4 bypasses middle part escape groove
301 and it is connected with the opening and closing sealing plate of another top of space in blending bin 12；Middle part escape groove 301 is provided with and driving-chain 4
The gear of cooperation, driving-chain 4 and the engaged transmission of middle part escape groove 301.Provided with logical between combustion chamber port A 1021 and chimney 11
It is disconnected that on-off valve two, combustion chamber port B 1022 and cigarette are provided between valve one, combustion chamber port A 1021 and the fuel inlet of coke oven
It is provided between chimney 11 between on-off valve three, combustion chamber port B 1022 and the fuel inlet of coke oven and is provided with on-off valve four.This implementation
In example, each combustion chamber 102 corresponds to a blending bin 12 respectively, and each blending bin 12 corresponds to a point of travelling gear 3 respectively.
With reference to Fig. 5, the application method of the coke oven cycle flue gas dual control pipe network device of the present embodiment comprises the following steps：
Step 1: closing circulating fan 10, on-off valve one and on-off valve four are closed, on-off valve three is opened；
Step 2: mobile total driving rack 2, under the drive of total driving rack 2, each point of travelling gear 3 revolves along forward direction
Turn so that the corresponding hermatic door 5 that is opened and closed in a space in blending bin 12 with combustion chamber port A1021 connections stays open shape
State；Meanwhile, open on-off valve two；
Step 3: opening circulating fan 10；
Step 4: the gaseous fuel of coke oven is firing with air-smoke mixture in a space in blending bin 12
The bottom for burning the part of room 102 is met burning, and the flue gas of burning generation is by the rows of combustion chamber port B 1022 to chimney 11；
Step 5: maintaining after setting time, circulating fan 10 is closed, on-off valve two and on-off valve three is closed, break-make is opened
Valve one；
Step 6: mobile total driving rack 2, under the drive of total driving rack 2, each point of travelling gear 3 revolves along reverse
Turn so that the corresponding hermatic door 5 that is opened and closed in another space in blending bin 12 with combustion chamber port B1022 connections is stayed open
State；Meanwhile, open on-off valve four；
Step 7: opening circulating fan 10；
Step 8: the gaseous fuel of coke oven exists with air-smoke mixture in another space in blending bin 12
The bottom of the another part of combustion chamber 102 is met burning, and the flue gas that burning is produced is arranged to chimney 11 by combustion chamber port A1021；
Step 9: maintaining after setting time, repeat step one to step 8.
The coke oven cycle flue gas dual control pipe network device of the present embodiment, by circulating fan 10 (frequency conversion fan) by chimney 11
Partial fume be in charge of 8 from flue gas and be conveyed into corresponding space in blending bin 12, circulating fan 10 maintains pipeline pressure, it is ensured that follow
Ring flue gas mixed proportion, meanwhile, the opening and closing hermatic door 5 being respectively provided with by the top of two spaces in blending bin 12 and opening and closing
(specific coordinated signals are the coordinated signals of control cabinet 7：1st, the opening and closing hermatic door 5 that the top in some space is provided with blending bin 12
The coordinated signals between open and close controlling case 7, when being opened and closed the opening of hermatic door 5, open and close controlling case 7 is synchronous to be opened；2nd, blending bin 12
The one group of opening and closing hermatic door 5 and open and close controlling case 7 that are respectively equipped with the top of interior two spaces and another group of opening and closing hermatic door 5 and open
Coordinated signals between control cabinet 7 are closed, when a certain group of opening and closing hermatic door 5 and open and close controlling case 7 are in open mode, another group is opened
Close hermatic door 5 and open and close controlling case 7 be then closed), it on the one hand may insure circulating flue gas and the same stepping of combustion air
Enter into blending bin 12, after being inhaled into together in combustion chamber 102 again after its synchronized mixes, on the other hand dexterously adapted to coke oven
(i.e. combustion chamber port A1021 and combustion chamber port B 1022 are alternately as gaseous fuel for the operating mode of alternate combustion in combustion chamber 102
Import so that the loop direction alternate change of combustion product gases in combustion chamber 102, charcoal is caused in the form of this kind of alternate combustion
Change the both sides of room 101 alternately uniformly to be heated, so as to improve the product quality of coke in carbonization chamber 101；Another convenience, the present embodiment
In, same total driving rack 2 can be driven with several point of synchro-meshing of travelling gear 3, so that institute in whole coke oven
Combuster 102 can carry out the synchronism switching of alternate combustion, enormously simplify control technique, while so that each carbonization chamber
101 are in the state of thermally equivalent all the time, improve the product quality of coke).
The coke oven cycle flue gas dual control pipe network device of the present embodiment, it is only necessary to can remain whole using a circulating fan 10
The flue gas recirculation of coke oven, is easy to centralized Control so that cost of investment and operating cost are substantially reduced；Wherein, blending bin 12, open
The outside that hermatic door 5, open and close controlling case 7, total driving rack 2 and point travelling gear 3 are arranged at coke oven is closed, focusing is not related to
The transformation of this body structure of stove, the difficulty of Optimizing Reconstruction is smaller, completes to inexpensive, low difficulty of construction and existing coke oven is changed
Make.
Partial fume, is sent to by the coke oven cycle flue gas dual control pipe network device of the present embodiment using dual control circulation pipe network system
Mixed in blending bin 12 with air, reduce the concentration of oxygen in combustion chamber 102, it is to avoid burning concentrations, local temperature mistake
High generation, and nitrogen oxides in circulating flue gas can suppress new NO_x formation, make NO in existing coke oven flue gasxContain
30-80% is greatly reduced in amount, as a rule, eliminates the setting of coke oven flue gas denitration device, reaches national coke oven flue gas
Put standard；Also increase the flame length of combustion chamber 102 simultaneously, improve temperature homogeneity, be conducive to improving coke quality；And dual control
Circulation pipe network system can be needed according to production and actively close, and the operation of original production system is not influenceed.
In actual moving process, the flue gas recirculation ratio that circulating fan 10 is extracted can be 0.1-30%, in the present embodiment
It is recommended that as follows：
Case 1：Certain coke-stove gas NOxConcentration be 608mg/m originally3, using flue gas recirculation, amount of circulating gas is total flue gas
The 4% of amount, using blast furnace gas as fuel, can make coke oven flue gas NOxContent is controlled in 417mg/m3Left and right；
Case 2：Certain coke-stove gas NOxConcentration be 608mg/m originally3, using flue gas recirculation, amount of circulating gas is total flue gas
The 8% of amount, using blast furnace gas as fuel, can make coke oven flue gas NOxContent is controlled in 259mg/m3Left and right；
Case 3：The concentration of certain coke-stove gas nitrogen oxides was 608mg/m originally3, using flue gas recirculation, amount of circulating gas is
The 10% of total exhaust gas volumn, using blast furnace gas as fuel, can make coke oven flue gas NOxContent is controlled in 226mg/m3Left and right.
Embodiment 2
With reference to Fig. 6, the coke oven cycle flue gas dual control pipe network device of the present embodiment, its structure is substantially the same manner as Example 1, its
Difference is：In order to ensure that all point travelling gears 3 by stably Synchronous Transmission, design the knot of another improvement
Structure, be specially：Compared to embodiment 1, in the present embodiment, the setting of total driving rack 2 is eliminated, but two neighboring point of transmission
It is driven between gear 3 by chain 13, some point of travelling gear 3 is driven by motor, so when some point of travelling gear 3
When being motor driven, by the transmission of chain 13 between two neighboring point of travelling gear 3, all point travelling gears 3 are realized
Synchronous rotation in the same direction.
With reference to Fig. 7, the application method of the coke oven cycle flue gas dual control pipe network device of the present embodiment comprises the following steps：
Step 1: closing circulating fan 10, on-off valve one and on-off valve four are closed, on-off valve three is opened；
Step 2: passing through some point of travelling gear 3 of motor forward drive so that each point of travelling gear 3 is along forward direction
Rotation so that the corresponding hermatic door 5 that is opened and closed in a space in blending bin 12 with combustion chamber port A1021 connections is stayed open
State；Meanwhile, open on-off valve two；
Step 3: opening circulating fan 10；
Step 4: the gaseous fuel of coke oven is firing with air-smoke mixture in a space in blending bin 12
The bottom for burning the part of room 102 is met burning, and the flue gas of burning generation is by the rows of combustion chamber port B 1022 to chimney 11；
Step 5: maintaining after setting time, circulating fan 10 is closed, on-off valve two and on-off valve three is closed, break-make is opened
Valve one；
Step 6: passing through some point of travelling gear 3 of motor reverse drive so that each point of travelling gear 3 is along reverse
Rotation so that corresponding opening and closing hermatic door 5 holding in another space in blending bin 12 with combustion chamber port B1022 connections is beaten
Open state；Meanwhile, open on-off valve four；
Step 7: opening circulating fan 10；
Step 8: the gaseous fuel of coke oven exists with air-smoke mixture in another space in blending bin 12
The bottom of the another part of combustion chamber 102 is met burning, and the flue gas that burning is produced is arranged to chimney 11 by combustion chamber port A1021；
Step 9: maintaining after setting time, repeat step one to step 8.
Schematically the utility model and embodiments thereof are described above, the description does not have restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area
Those of ordinary skill enlightened by it, do not departing from the case that the utility model creates objective, designed without creative
The frame mode similar to the technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (8)
1. carbonization chamber (101) and combustion chamber (102) in a kind of coke oven cycle flue gas dual control pipe network device, including coke oven, coke oven
Interconnected two parts, the bottom of a portion are separated into by flue (103) in alternate configuration, combustion chamber (102)
Provided with combustion chamber port A (1021), the bottom of another part is provided with combustion chamber port B (1022)；It is characterized in that：
Also include flue gas house steward (9), circulating fan (10) and blending bin (12), flue gas house steward (9) and the chimney (11) of coke oven connect
Connect, circulating fan (10) is installed on flue gas house steward (9)；Disconnected two space, Mei Gekong are divided into blending bin (12)
Between (8) be in charge of by single flue gas respectively connected with flue gas house steward (9)；
The combustion chamber port A (1021) respectively with a space in chimney (11), blending bin (12) and the fuel of coke oven
Import connect, the combustion chamber port B (1022) respectively with another space in chimney (11), blending bin (12) and coke oven
Fuel inlet connection.
2. coke oven cycle flue gas dual control pipe network device according to claim 1, it is characterised in that：In the blending bin (12)
The top of two spaces is respectively provided with each space point being opened and closed in hermatic door (5) and open and close controlling case (7), blending bin (12)
It is not in charge of (8) with corresponding flue gas by corresponding open and close controlling case (7) to connect.
3. coke oven cycle flue gas dual control pipe network device according to claim 2, it is characterised in that：The opening and closing hermatic door
(5) opening and closing seal and opening and closing sealing plate are included, the opening and closing seal is to be arranged on some space of correspondence in blending bin (12)
The ventilating opening at top, the opening and closing sealing plate is hinged on ventilating opening and can seal up ventilating opening.
4. coke oven cycle flue gas dual control pipe network device according to claim 3, it is characterised in that：The open and close controlling case
(7) include at the top of lower box (701) and the upper box (702) being arranged on lower box (701), lower box (701) and top box
The openings of body (702) bottom are exhanst gas outlet (706)；
Some of lower box (701) is in charge of (8) connection with corresponding flue gas sideways, and some lateral opening of upper box (702) is
Flue gas injection mouthful (707), flue gas injection mouthful (707) some space connection corresponding with blending bin (12)；
The top of seal cover board (703) is connected by connecting rod (6) with corresponding opening and closing sealing plate, and seal cover board (703) is suspended from
The top of exhanst gas outlet (706) and exhanst gas outlet (706), exhanst gas outlet (706) can be covered completely when seal cover board (703) is fallen
The gag lever post (704) being surrounded by through seal cover board (703), the line of adjacent gag lever post (704) is provided with gasket seal
(705)。
5. coke oven cycle flue gas dual control pipe network device according to claim 4, it is characterised in that：Also include total driving rack
(2) travelling gear (3) and driving-chain (4), are divided, total driving rack (2) is located at the top of blending bin (12), total driving rack
(2) with the engaged transmission of point travelling gear (3) below, point travelling gear (3) is provided with middle part along its whole circumferential middle part
Escape groove (301)；One end of the driving-chain (4) is connected to the opening and closing sealing plate of some top of space blending bin (12) Nei, passes
The other end of dynamic chain (4) bypasses the middle part escape groove (301) and close with the opening and closing of another top of space in blending bin (12)
Shrouding is connected；The driving-chain (4) and middle part escape groove (301) engaged transmission；Total driving rack (2) and the electricity that slows down
The output end engaged transmission of machine.
6. coke oven cycle flue gas dual control pipe network device according to claim 4, it is characterised in that：Also include a point travelling gear
(3) and driving-chain (4), point travelling gear (3) is provided with middle part escape groove (301) along its whole circumferential middle part；The driving-chain
(4) one end is connected to the opening and closing sealing plate of some top of space blending bin (12) Nei, and the other end of driving-chain (4) bypasses described
Middle part escape groove (301) is simultaneously connected with the opening and closing sealing plate of another top of space in blending bin (12)；The driving-chain (4) with
Middle part escape groove (301) engaged transmission；
It is driven between two neighboring point of travelling gear (3) by chain (13), some point of travelling gear (3) is driven by motor
It is dynamic.
7. the coke oven cycle flue gas dual control pipe network device according to claim 5 or 6, it is characterised in that：Combustion chamber port A
(1021) it is provided with logical between the fuel inlet of coke oven provided with on-off valve one, combustion chamber port A (1021) between chimney (11)
It is disconnected that on-off valve three, combustion chamber port B (1022) and coke oven are provided between valve two, combustion chamber port B (1022) and chimney (11)
On-off valve four is provided between fuel inlet.
8. coke oven cycle flue gas dual control pipe network device according to claim 7, it is characterised in that：The gag lever post (704)
For " T " character form structure placed in forward direction；
The connecting rod (6) is L-shaped structure, and one end of connecting rod (6) passes through perforate and seal cover board at the top of upper box (702)
(703) top is connected, the other end of connecting rod (6) and corresponding opening and closing sealing plate connection；
Each combustion chamber (102) corresponds to a blending bin (12) respectively, and each blending bin (12) corresponds to a point of driving cog respectively
Take turns (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224414.1U CN206521426U (en) | 2017-03-09 | 2017-03-09 | A kind of coke oven cycle flue gas dual control pipe network device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224414.1U CN206521426U (en) | 2017-03-09 | 2017-03-09 | A kind of coke oven cycle flue gas dual control pipe network device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206521426U true CN206521426U (en) | 2017-09-26 |
Family
ID=59902631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720224414.1U Expired - Fee Related CN206521426U (en) | 2017-03-09 | 2017-03-09 | A kind of coke oven cycle flue gas dual control pipe network device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206521426U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701108A (en) * | 2017-03-09 | 2017-05-24 | 安徽工业大学 | Double-control pipe network device for circulatory flue gas of coking furnace and use method of double-control pipe network device |
| CN108916888A (en) * | 2018-09-17 | 2018-11-30 | 陕西黑猫焦化股份有限公司 | A kind of device reducing the nitrogen oxides in flue gases of cock oven by waste gas circulation |
-
2017
- 2017-03-09 CN CN201720224414.1U patent/CN206521426U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106701108A (en) * | 2017-03-09 | 2017-05-24 | 安徽工业大学 | Double-control pipe network device for circulatory flue gas of coking furnace and use method of double-control pipe network device |
| CN106701108B (en) * | 2017-03-09 | 2022-03-08 | 安徽工业大学 | Coke oven circulating flue gas double-control pipe network device and using method thereof |
| CN108916888A (en) * | 2018-09-17 | 2018-11-30 | 陕西黑猫焦化股份有限公司 | A kind of device reducing the nitrogen oxides in flue gases of cock oven by waste gas circulation |
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