CN107760335A - Oven top of coke oven dust arrester - Google Patents

Abstract

The invention discloses oven top of coke oven dust arrester, support base is provided with furnace roof baseline, blower fan is fixed on the support base with deduster, also include main tracheae and multiple gas skirts, directly over gas skirt is covered on the outside of the small burner of two adjacent coke sides, the inlet scoop with blower fan, deduster air inlet are connected respectively for main tracheae one end, and the main tracheae other end is connected by bronchus with multiple gas skirts；Gas skirt is made up of the collection section being connected with each other and refraction section, and collection section offers helicla flute along its axis direction on its inwall, and refraction section is that coniform and its cone tip portion connects with bronchial end.During work, centralized collection is carried out to the flue gas that loss in small burner on furnace roof baseline comes out simultaneously together by multiple gas skirts, and the flue gas collected is entered in main tracheae by bronchus, entered under the traction of blower fan wind-force in dirt catcher, to carry out the processing of flue gas, prevent the loss of furnace roof flue gas, avoid polluting environment.

Description

Oven top of coke oven dust arrester

Technical field

The present invention relates to Environmental Protection Technology in Coking Industry field, in particular to oven top of coke oven dust arrester.

Background technology

Coking is multi-source pollution industry, and flue dust is that emissions are mainly polluted in coking production process.Modern cell-type coke oven one As be equipped with vehicular or ground standing posture is coaling and coke discharging and dedusting system, wherein ground standing posture dust pelletizing system application is more wide It is general.Ground standing posture coke discharging and dedusting system is blocked mainly for coke side flue dust using coupling fluid-structure or VFC blower fan by being arranged on Collecting hood on burnt car purifies by its most flue dust collecting and through coke discharging and dedusting device.But still there is part the small furnace head position of coke side Flue dust loss and deteriorate operating environment.The small burner of coke side discharge of the coke flue dust from blow-on door, it is red it is burnt initially enter grid, continue coke pushing and 4 stages of fire door are closed, burnt initially to enter grid stage flue dust most prominent wherein red.

Because the single small burner of coke side, firedoor frame and furnace stay front to coke guide orbit centre away from having differences, to prevent Lead burnt grid and cover bucket type dust gathering arrester scratching furnace stay, its nearly body of heater end and the small burner front spacing of coke side are larger, so as to be flue dust from small Loss leaves structural defect at burner.Flue dust temperature of the discharging of the coke is high, instantaneous heat buoyancy and dirt are large-minded, but coke guide grid of coke guide Top and the bucket type dust gathering arrester area that covers of both quenching carriage tops are mainly allocated to coke quenching cart than great disparity, ground dedusting blower fan suction Compartment top covers bucket type dust gathering arrester, interstice coverage between bucket type dust gathering arrester and small burner be present plus leading burnt grid and covering, thus cause part flue dust from Loss at small burner.In order to improve its dust removing effects, some coal chemical enterprises, which are taken, covers the nearly body of heater of bucket type dust gathering arrester leading Jiao Shanding Perforate and additional vehicle-mounted fan auxiliary dust suction on the side plate of side, Some Enterprises are taken adjustment earth station dedusting fan to shift to an earlier date and transported at a high speed Turn time parameter and initially enter grid stage suction to increase red Jiao in advance；But it is undesirable to produce effects, and also add power consumption.

The content of the invention

It is an object of the invention to provide oven top of coke oven dust arrester, prevents the loss of furnace roof flue gas, avoids polluting environment.

The purpose of the present invention is achieved through the following technical solutions：

Oven top of coke oven dust arrester, support base being provided with furnace roof baseline, blower fan is fixed on the support base with deduster, Also include main tracheae, tedge, temporary cavity and multiple gas skirts, the gas skirt and be covered in two small burners of adjacent coke side Directly over outside, the inlet scoop with blower fan, temporary cavity connect respectively for described main tracheae one end, and the main tracheae other end passes through branch gas Pipe connects with multiple gas skirts, and tedge one end connects with deduster air inlet, and the tedge other end connects with temporary cavity It is logical；The gas skirt is made up of the collection section being connected with each other and refraction section, and the collection section is tubular and existed along its axis direction Helicla flute is offered on its inwall, the refraction section is that coniform and its cone tip portion connects with the bronchial end；It is described Deduster includes casing, and the net air cavity and filter chamber mutually completely cut off is provided with the box house, is divided on the two side of casing Not She You air inlet pipe and escape pipe, and the net air cavity connects with escape pipe, and the filter chamber connects with air inlet pipe, it is described only Air jet pipe is provided with air cavity, described air jet pipe one end extends to outside casing through net air cavity and is provided with pulse in the end Valve, is provided with multiple filter bags in the filter chamber, and one end of the filter bag connects with the net air cavity, opened on the air jet pipe There is the multiple and one-to-one nozzle of filter bag；Also include resistant to elevated temperatures organ cover and one end end is hinged and is arranged at the top of filter chamber Pre- dirt plate, be provided with the other end of the pre- dirt plate by torsion spring along the inclined deflector of airintake direction, the deflector End extends to the filter chamber bottom, and balancing weight, the organ cover are fixed with side of the pre- dirt backboard to air inlet pipe One end is connected with the top inner wall of filter chamber cavity, and the organ cover other end connects with outer wall of the balancing weight backwards to air inlet pipe side Connect.

During present invention work, the flue gas come out simultaneously to loss in small burner on furnace roof baseline together by multiple gas skirts enters Row centralized collection, and the flue gas collected is entered in main tracheae by bronchus, is entered under the traction of blower fan wind-force temporary In cavity, when the flue gas in temporary cavity is moved in dirt catcher by tedge again, it can be carried out temporarily by temporary cavity flue gas When store, it is convenient deduster debugged or to smoke filtration after carry out replying state when it is sustainable in small burner Flue gas is collected, and avoids the flue gas in gas skirt from accumulating, and to complete the processing of flue gas, is prevented the loss of furnace roof flue gas, is avoided Pollute environment.Wherein, turbulent flow is formed when flue gas moves in bronchus and main tracheae so that flue gas is along tracheae radial direction Upper to have component velocity, i.e. flue gas can form certain impact to inner surface of trachea, and similarly inner surface of trachea can cause one to flow of flue gas Fixed obstruction；Also, turbulent flow can be regarded as the stream being formed by stacking by the vortex of various different scales from physically saying Dynamic, it is random that the size of these whirlpools is distributed in tracheae axis direction, and the vortex of large scale mainly has the perimeter strip of flowing Part is certainly sized, can be comparable with the size in flow field, is the reason for causing low frequency pulsating；The vortex of small yardstick is mainly Toughness power is determined that its size may only have the one thousandth magnitude of flow field yardstick, is the reason for causing dither；Big chi Microvortex rotation is formed after the Vortex Breakdown of degree, the vortex of smaller yardstick is formed after the Vortex Breakdown of smaller scale, thus is being filled In the turbulent region for distributing exhibition, the yardstick that runny nose is vortexed can continuously change in comparatively wide scope, and the vortex of large scale is not Disconnected ground obtains energy from main flow and set up by the interaction energy between vortex to small vortex transmission, finally due to fluid viscosity The continuous disappearance mechanical energy of vortex of the small yardstick of effect just convert or be the heat energy that dissipation is fluid, that is, cause the temperature of main tracheae Degree drastically raises, and main endotracheal pressure increase, correspondingly, the live load of blower fan also sharply increases.And in the present invention, gas collection Cover is made up of collection section and refraction section, and the helicla flute being distributed along its axis direction is provided with the inwall of collection section so that is being entered Flue gas before becoming owner of tracheae gradually forms the vortex of large scale in gas skirt, and non-turbulent flow, i.e. flue gas are around the axis of tracheae It is rotationally advancing, the energy particularly consumed in the flue gas in horizontal main duct portion, being rotationally advancing is less than just The energy that is consumed when flue gas rises in the case of often, and the mechanical energy of fluid be converted to heat energy amount it is less, the temperature of main tracheae Change unobvious, and then reduce the consumption of blower fan and electric power.

And it is bad for the dust removing effects of cleaner in the prior art, the present invention is provided with pre- in the filter chamber of flue gas Dirt plate, i.e. flue gas are after air inlet pipe is entered in filter chamber, in the presence of pre- dirt plate, due to effect of inertia, in air-flow Crude particle dust falls directly into the bottom of filter chamber（That is the bottom of casing）, and then play a part of pre- dirt；Air-flow continues up Mobile, by filter bag, by dust catching in the outer surface of filter bag, and purified gas then enters in filter bag and rises to filter chamber In the net air cavity on top, the purified gas is directly discharged by escape pipe after convergence, and when filter bag external dust is assembled During to certain thickness, pulse valve events so that compressed air is flowed into air jet pipe, and is filtered corresponding to multiple nozzles towards its Sprayed in bag, high velocity air drives surrounding air to be sprayed into through nozzle in each filter bag so that the dust being captured on filter bag outer wall Come off, be finally collected into the bottom of filter chamber, after the dust of filter chamber bottom is collected, pulse valve is closed, filter bag Return back to original filtration condition；Pass through the secondary collection to dust in flue gas so that the finally gas by being discharged in escape pipe Meet industrial standard, reach and be badly in need of the purpose for improving dust removing effects in the industry.In the prior art, in process of being coaling to coke furnace carbonization chamber In caused flue gas when being handled, the design path of intake stack is shorter, and the Mars remained in flue gas can be entered directly into and removed Filter bag is caused to damage in dirt device, inventor carries out further investigation discovery, and flow velocity of the flue gas when entering in air inlet pipe is very not It is stable, in high temperature environments, it can not be consumed in moving process when flue gas flow rate is too fast certainly with the Mars of flue gas outflow The amount of heat that body carries, and in flue gas flow rate compared with time slack, Mars can in moving process automatic distinguishing, i.e., filter bag can not be made Into damage；Meanwhile be fixedly installed on the pre- dirt plate in filter chamber and can hinder the normal pass of flue gas, therefore, the present invention is in air inlet The be hinged pre- dirt plate set of the entrance of pipe can not only be filtered for the first time to the dust in flue gas, moreover it is possible to the gas in air inlet pipe Stream is intercepted；, can be to pre- dirt plate shape into impact when the flow velocity of flue gas stream is too fast so that pre- dirt plate is around its pin joint and along cigarette The flow direction of gas is swung, and using the balancing weight in pre- dirt back to increase the gravity of pre- dirt plate, prevents the amplitude of fluctuation of pre- dirt Spend big, and once when flue gas reduces to the impact dynamics of pre- dirt plate, reverse swing will occur for pre- dirt plate, with control into The size of the passage formed between tracheae and pre- dirt plate, and then the flow velocity for controlling flue gas to enter in filter chamber（Utilize unit bodies After gas in product is entered in big passage with certain flow velocity by passage aisle, principle that its speed can reduce）；I.e. when flue gas with compared with Fast speed enters in blast pipe, in the presence of pre- dirt plate so that flue gas enters filter chamber with relatively stable speed It is interior, while there is the Mars entered in the lump with flue gas enough displacements it is distributed the heat entrained by itself, avoid Mars Directly contacted with filter bag and cause it impaired.

Wherein, spiral nozzle inflated into filter bag be allowed to expand when, the dust being attached on filter bag can be in filter chamber Sputter everywhere, and balancing weight upper surface has certain area, and balancing weight balancing weight top during being swung with pre- dirt plate Portion can accumulate more dust, and then cause the gross weight increase of balancing weight, that is, increase stop dynamics of the pre- dirt plate to flue gas, i.e., Reduce the cleaning efficiency of dust in filter chamber；And in the present invention, resistant to elevated temperatures organ cover is installed in filter chamber top inner wall, The organ cover opens balancing weight upper surface and the isolation of filter chamber inner space, and prevented that dust accumulates at the top of balancing weight can Can, ensure regulation of the pre- dirt plate to flue gas flow rate, improve the efficiency of dust collection of flue gas.And deflector passes through torsion spring and pre- dirt plate lower end End connects, and airintake direction of the deflector along air inlet inner tube smoke tilts, i.e., is left between deflector and pre- dirt plate one big The small initial angle for obtuse angle, during deflector is swung with pre- dirt plate, deflector can be to entering filter chamber The flow direction of interior flue gas is finely adjusted control, that is, the flue gas flowed impacts to deflector, and when flue gas flow rate is too fast, passes through Torsion spring causes the angle between deflector and pre- dirt plate to diminish, and further reduces the flow velocity of flue gas before flue gas contacts with filter bag Get off, while the end of deflector extends to the bottom of filter chamber, that is, increases filter chamber body wall, pre- dirt plate side wall and deflector The flue gas flow channel length that side wall is formed, a small amount of Mars to be carried in flue gas provide longer displacement, ensure in flue gas Even heat discharges and the extinguishing of a small amount of Mars, improves the service life of filter bag.And the spiral spray on air jet pipe Mouth, coniform air-flow can be produced, first along its inwall high-speed mobile when inside the gas shock filter bag, and be attached to filter bag four The dust in week is relatively more, and the bottom that traditional direct-injection nozzle is directly directed at filter bag carries out impact until gas is full of filter bag Only, the dust ejection that filter bag can be just will be attached to because of volumetric expansion on its outer wall, and spiral nozzle can be in moment in filter bag Wall carries out high speed impact, the dust ejection that instantaneously will be attached on filter bag outer wall so that the cleaning speed of dust is significantly on filter bag Improve.

Flap valve is installed in the bronchial end, the flap valve connects with the refraction section upper end.Pass through turnover panel Valve, the flow that bronchus and main tracheae can be entered to the flue gas in gas skirt regulate and control, and avoid the live load of blower fan from going out Now dally or overload, and then reduce cost when fume collection is handled.

Flue gas switching valve is installed on the main tracheae.When the flue gas loss of the small burner of coke side is serious, bronchus with And main tracheae fume collection overload when, the flue gas switching valve on main tracheae can be connected directly with ground station for dust removal, Flue gas that can be in gas skirt carries out auxiliary conducting, improves the fume collection treatment effeciency in the small burner of coke side.

Stopper slot is provided with the upper end of the balancing weight, connecting rod is hinged with the top of the filter chamber, and in connecting rod End is provided with roller, and the roller-coaster is arranged in stopper slot.When the amplitude of fluctuation of pre- dirt plate is excessive, equivalent to exhaust Flue gas in pipe is directly impacted on filter bag, is unable to reach two-stage dust removal effect, and easily make it that filter bag is disturbed by Mars And it is damaged；The present invention is provided with stopper slot in the upper end of balancing weight, and is hinged on the cavity wall of filter chamber and is provided with connecting rod, and connects The pulley of bar end is slidably in stopper slot, so as to get when slip is moved to the extreme position on the left of stopper slot, pre- dirt plate is then Can not continue to swing to the right, similarly, when pulley is moved to the extreme position on the right side of stopper slot, pre- dirt plate can not then continue to Left swing is moved, and to prevent the left and right amplitude of oscillation of pre- dirt plate excessive, ensures that flue gas enters filter chamber with stable flow velocity in dust removal process It is interior, maximize the dust removing effects for realizing flue gas.

Condenser is installed in the side wall of the casing, the gas outlet of the condenser connects with filter chamber, condenser Air inlet connected with air inlet pipe.Condenser is set between air inlet pipe and filter chamber, and the condenser is flue gas condenser, can The a large amount of heat energy carried in flue gas are eliminated into a part, influence filter bag to prevent the flue-gas temperature into filter chamber too high Service life.

The bottom of the casing is provided with revolving valve.Preferably, revolving valve, wherein revolving valve are installed in bottom half Also referred to as discharge valve or vane type wind stopping device, main function of the vane type wind stopping device in Geldart-D particle or casing, which is that, to be made to unload In the case where there is pressure differential, dust is smoothly discharged out glassware, and prevents air from leaking, so as to ensure conveying and casing energy Normally with efficiently working.

The present invention compared with prior art, has the following advantages and advantages：

1st, gas skirt of the invention is made up of collection section and refraction section, and is provided with along its axis direction and is distributed on the inwall of collection section Helicla flute so that the flue gas before main tracheae is entered gradually forms the vortex of large scale in gas skirt, and non-turbulent flow, i.e., Flue gas is rotationally advancing around the axis of tracheae, particularly in the flue gas institute in horizontal main duct portion, being rotationally advancing The energy of consumption is less than the energy that is consumed when flue gas rises under normal circumstances, and the mechanical energy of fluid be converted to the amount of heat energy compared with It is few, the temperature change unobvious of main tracheae, and then reduce the consumption of blower fan and electric power；

2nd, the present invention is when the flue gas loss of the small burner of coke side is serious, the fume collection overload of bronchus and main tracheae When, the flue gas switching valve on main tracheae can be connected directly with ground station for dust removal, and flue gas that can be in gas skirt carries out auxiliary and led It is logical, improve the fume collection treatment effeciency in the small burner of coke side；

3rd, the scope of bag dust filter processing air quantity is wide in the present invention, and several square meters as low as per minute are big to tens thousand of squares per minute Rice, suitable for the flue gas ash removal at industrial furnace cellar for storing things, the discharge of atmosphere pollution can be greatly reduced.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the structural representation of deduster；

Fig. 3 is the structural representation under deduster deashing state.

Mark and corresponding parts title in accompanying drawing：

The pre- dirt plate of 1- air inlet pipe, 2- condensers, 3- pulse valves, 4-, 5- air jet pipes, 6- connecting rods, 7- stopper slots, 8- balancing weights, 9- Deflector, 10- escape pipes, 11- filter bags, 12- revolving valves, 13- casings, 14- organs cover, 15- support bases, 16- furnace roofs baseline, The main tracheae of 17- tedges, 18-, 19- helicla flutes, 20- gas skirts, 21- flap valves, 22- bronchuses, 23- flue gases switching valve, 24- Deduster, 25- blower fans, 26- keep in cavity.

Embodiment

For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make For limitation of the invention.

Embodiment 1

As shown in Fig. 1 ~ Fig. 3, the present embodiment is provided with support base 15 on furnace roof baseline 3, and blower fan 25 is fixed on deduster 24 On the support base 15, in addition to main tracheae 18, tedge 17, temporary cavity 26 and multiple gas skirts 20, the gas skirt 20 Directly over being covered on the outside of the small burner of two adjacent coke sides, described main one end of tracheae 18 inlet scoop with blower fan 25, temporarily respectively Deposit cavity 26 to connect, the main other end of tracheae 18 is connected by bronchus 9 with multiple gas skirts 20, and the one end of tedge 17 is with removing The air inlet of dirt device 24 connects, and the other end of tedge 17 connects with temporary cavity 26；The gas skirt 20 is by the collection that is connected with each other Section and refraction section are formed, and the collection section is tubular and helicla flute 19, the folding are offered on its inwall along its axis direction Section is penetrated to connect with the end of bronchus 9 for coniform and its cone tip portion；The deduster 24 includes casing 13, in the case Body 13 is internally provided with the net air cavity and filter chamber mutually completely cut off, and air inlet pipe 1 and outlet are respectively equipped with the two side of casing 13 Pipe 10, and the net air cavity connects with escape pipe 10, the filter chamber connects with air inlet pipe 1, is provided with the net air cavity Air jet pipe 5, described one end of air jet pipe 5 extends to outside casing 13 through net air cavity and is provided with pulse valve 3 in the end, described Multiple filter bags 11 are provided with filter chamber, one end of the filter bag 11 connects with the net air cavity, is provided with the air jet pipe 5 more Individual and 11 one-to-one nozzle of filter bag；Also include resistant to elevated temperatures organ cover 14 and one end end is hinged and is arranged at the top of filter chamber Pre- dirt plate 4, be provided with the other end of the pre- dirt plate 4 by torsion spring along the inclined deflector 9 of airintake direction, the water conservancy diversion The end of plate 9 extends to the filter chamber bottom, and in pre- dirt plate 4 back to being fixed with balancing weight 8 on the side of air inlet pipe 1, it is described The one end of organ cover 14 is connected with the top inner wall of filter chamber cavity, and the other end of organ cover 14 is with the balancing weight 8 backwards to air inlet pipe 1 The outer wall connection of side.

During work, the flue gas that loss in small burner on furnace roof baseline 3 comes out is carried out simultaneously together by multiple gas skirts 20 Centralized collection, and the flue gas collected is entered in temporary cavity 26 by bronchus 9, when the flue gas in temporary cavity 26 is again by upper Riser 17 is moved in dirt catcher 11, can temporarily be stored by the temporary flue gas of cavity 26, convenient to enter in deduster 24 Row is debugged or to the sustainable flue gas in small burner is collected during progress replying state after smoke filtration, avoids gas skirt Flue gas accumulation in 20, to complete the processing of flue gas, prevents the loss of furnace roof flue gas, avoids polluting environment.Wherein, flue gas is propping up Turbulent flow is formed when being moved in tracheae 9 and main tracheae 18 so that flue gas has component velocity, i.e. flue gas in the radial direction along tracheae Certain impact can be formed to inner surface of trachea, similarly inner surface of trachea can cause certain obstruction to flow of flue gas；Also, from physics Turbulent flow can be regarded as the flowing being formed by stacking by the vortex of various different scales by being said in structure, and the size of these whirlpools is in gas Tube axis direction distribution is random, and the boundary condition that the vortex of large scale mainly has flowing is certainly sized, Ke Yiyu The size in flow field is comparable, is the reason for causing low frequency pulsating；The vortex of small yardstick is mainly that toughness power is determined, its size May there was only the one thousandth magnitude of flow field yardstick, be the reason for causing dither；Formed after the Vortex Breakdown of large scale small Yardstick is vortexed, and the vortex of smaller yardstick is formed after the Vortex Breakdown of smaller scale, thus in full-blown turbulent region, stream The yardstick that tears are vortexed can continuously change in comparatively wide scope, and the vortex of large scale constantly obtains energy from main flow and passed through Interaction energy between vortex is set up to small vortex transmission, finally because the vortex of the small yardstick of effect of fluid viscosity is continuous Disappearance mechanical energy just converts or is the heat energy that dissipation is fluid, that is, causes the temperature of main tracheae 18 drastically to raise, main tracheae 18 Interior pressure increase, correspondingly, the live load of blower fan 25 also sharply increases.And in the present invention, gas skirt 20 by collection section and Reflect section to form, and the helicla flute 19 being distributed along its axis direction is provided with the inwall of collection section so that enter main tracheae 18 Flue gas before gradually forms the vortex of large scale in gas skirt 20, and non-turbulent flow, i.e. flue gas are before the axis rotation of tracheae Enter, the energy particularly consumed in the flue gas in the horizontal main part of tracheae 18, being rotationally advancing is less than positive reason The energy that is consumed when flue gas rises under condition, and the mechanical energy of fluid be converted to heat energy amount it is less, the temperature of main tracheae 18 becomes Change unobvious, and then reduce the consumption of blower fan 25 and electric power.

Bad for the dust removing effects of cleaner in the prior art, the present embodiment is provided with pre- in the filter chamber of flue gas Dirt plate 4, i.e. flue gas are after air inlet pipe 1 is entered in filter chamber, in the presence of pre- dirt plate 4, due to effect of inertia, in air-flow Crude particle dust fall directly into the bottom of filter chamber（That is the bottom of casing 13）, and then play a part of pre- dirt；Air-flow continues Move up, by filter bag 11, by dust catching in the outer surface of filter bag 11, and purified gas then enters in filter bag 11 Rise in the net air cavity on filter chamber top, the purified gas is directly discharged by escape pipe 10 after convergence, and works as filter bag When 11 external dusts gather certain thickness, pulse valve 3 acts so that and compressed air is flowed into air jet pipe 5, and by multiple For nozzle towards spraying in its corresponding filter bag 11, high velocity air drives surrounding air to be sprayed into through nozzle in each filter bag 11 so that catches Collect the dust releasing on the outer wall of filter bag 11, the bottom of filter chamber is finally collected into, when the dust of filter chamber bottom is collected After, pulse valve 3 is closed, and filter bag 11 returns back to original filtration condition；Pass through the secondary collection to dust in flue gas so that Industrial standard is finally met by the gas discharged in escape pipe 10, reaches and is badly in need of the purpose for improving dust removing effects in the industry.

And be directed in the prior art, when caused flue gas is handled during being coaling to coke furnace carbonization chamber, blast pipe The design path in road is shorter, and the Mars remained in flue gas can enter directly into be caused to damage in deduster to filter bag 11, inventor Further investigation discovery is carried out, flow velocity of the flue gas when entering in air inlet pipe 1 is very unstable, in high temperature environments, with flue gas The Mars of outflow can not consume the amount of heat of its own carrying when flue gas flow rate is too fast in moving process, and in flue gas stream Speed compared with time slack, Mars can in moving process automatic distinguishing, i.e., filter bag 11 can not be caused to damage；Meanwhile it was fixedly installed on Pre- dirt plate 4 in filter chamber can hinder the normal pass of flue gas, and therefore, the present embodiment is hinged what is set in the entrance of air inlet pipe 1 Pre- dirt plate 4 can not only be filtered for the first time to the dust in flue gas, moreover it is possible to which the air-flow in air inlet pipe 1 is intercepted；In flue gas When the flow velocity of stream is too fast, pre- dirt plate 4 can be formed and impacted so that pre- dirt plate 4 is put around its pin joint and along the flow direction of flue gas It is dynamic, using the balancing weight 8 on the pre- back side of dirt plate 4 to increase the gravity of pre- dirt plate 4, prevent that the amplitude of fluctuation of pre- dirt is excessive, and one When flue gas reduces to the impact dynamics of pre- dirt plate 4, reverse swing will occur denier for pre- dirt plate 4, with control air inlet pipe 1 with it is pre- The size of the passage formed between dirt plate 4, and then the flow velocity for controlling flue gas to enter in filter chamber（Utilize the gas in unit volume After body is entered in big passage with certain flow velocity by passage aisle, principle that its speed can reduce）；I.e. when flue gas is with faster speed Into in blast pipe, in the presence of pre- dirt plate 4 so that flue gas is entered in filter chamber with relatively stable speed, simultaneously There is the Mars entered in the lump with flue gas enough displacements it is distributed the heat entrained by itself, avoid Mars directly with filter Bag 11 contacts and causes it impaired.Wherein, deflector 9 is connected by torsion spring with the pre- lower end of dirt plate 4, and deflector 9 is along entering The airintake direction of flue gas is tilted in tracheae 1, i.e., the initial angle that a size is obtuse angle is left between deflector 8 and pre- dirt plate 4, During deflector 8 is swung with pre- dirt plate 4, deflector 8 can enter to the flow direction for entering the flue gas in filter chamber Row fine setting control, that is, the flue gas flowed impacts to deflector 8, and when flue gas flow rate is too fast, passes through torsion spring deflector 8 Angle between pre- dirt plate 4 diminishes, and further reduces the flow velocity of flue gas before flue gas contacts with filter bag 11, leads simultaneously The end of flowing plate 9 extends to the bottom of filter chamber, that is, increases filter chamber body wall, the pre- side wall of dirt plate 4 and the side wall of deflector 9 and form Flue gas flow channel length, a small amount of Mars to be carried in flue gas provides longer displacement, ensures the even heat in flue gas Release and the extinguishing of a small amount of Mars, improve the service life of filter bag.And the spiral nozzle on air jet pipe 5, can be produced Raw coniform air-flow, first along its inwall high-speed mobile during gas shock 11 inside of filter bag, and it is attached to the surrounding of filter bag 11 Dust it is relatively more, traditional direct-injection nozzle be directly aligned filter bag 11 bottom carry out impact until gas be full of filter bag 11 Only, the dust ejection that filter bag 11 can be just will be attached to because of volumetric expansion on its outer wall, and spiral nozzle can be in moment to filter bag 11 inwalls carry out high speed impact, the dust ejection that instantaneously will be attached on the outer wall of filter bag 11 so that the cleaning of dust on filter bag 11 Speed greatly improves.

The present embodiment can enter the stream of bronchus 22 and main tracheae 18 by flap valve 21 to the flue gas in gas skirt 20 Amount is regulated and controled, and avoids the live load of blower fan 25 from occurring dallying or overload, and then reduces cost when fume collection is handled. When the flue gas loss of the small burner of coke side is serious, during the fume collection overload of bronchus 22 and main tracheae 18, positioned at master Flue gas switching valve 23 on tracheae 18 can be connected directly with ground station for dust removal, and flue gas that can be in gas skirt 20 carries out auxiliary conducting, Improve the fume collection treatment effeciency in the small burner of coke side.

Wherein, the present embodiment is provided with stopper slot 7 in the upper end of the balancing weight 8, is hinged with the top of the filter chamber Connecting rod 6, and roller is installed in the end of connecting rod 6, the roller-coaster is arranged in stopper slot 7；In the side of the casing 13 Condenser 2 is installed, the gas outlet of the condenser 2 connects with filter chamber, and air inlet and the air inlet pipe 1 of condenser 2 connect on wall It is logical.

When the amplitude of fluctuation of pre- dirt plate 4 is excessive, directly impacted equivalent to the flue gas in blast pipe on filter bag 11, can not Reach two-stage dust removal effect, and easily filter bag 11 is damaged by the interference of Mars；The present invention opens in the upper end of balancing weight 8 Limited location groove 7, and be hinged on the cavity wall of filter chamber and be provided with connecting rod 6, and the pulley of the end of connecting rod 6 is slidably spacing Groove 7, so as to get when sliding the extreme position for being moved to the left side of stopper slot 7, pre- dirt plate 4 can not then continue to swing to the right, similarly, When pulley is moved to the extreme position on the right side of stopper slot 7, pre- dirt plate 4 can not then continue to swing to the left, to prevent pre- dirt plate 4 The left and right amplitude of oscillation is excessive, ensures that flue gas is entered in filter chamber with stable flow velocity in dust removal process, removing for flue gas is realized in maximization Dirt effect.Condenser 2 is set between air inlet pipe 1 and filter chamber, and the condenser 2 is flue gas condenser 2, will can be taken in flue gas A large amount of heat energy of band eliminate a part, and filter bag 11 is influenceed to prevent the flue-gas temperature into filter chamber too high uses the longevity Life.

Preferably, installing revolving valve 12 in the bottom of casing 13, wherein revolving valve 12 is also referred to as discharge valve or vane type closes Wind device, main function of the vane type wind stopping device in Geldart-D particle or casing 13, which is that, makes discharger have the situation of pressure differential Under, dust is smoothly discharged out, and prevents air from leaking, so as to ensure that conveying and casing 13 can be normally with efficiently working.

Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims (6)

1. oven top of coke oven dust arrester, in furnace roof baseline（16）On be provided with support base（15）, blower fan（25）With deduster（24） It is fixed on the support base（15）On, it is characterised in that：Also include main tracheae（18）, tedge（17）, temporary cavity（26）With Multiple gas skirts（20）, the gas skirt（20）Directly over being covered on the outside of the small burner of two adjacent coke sides, the main tracheae （18）One end respectively with blower fan（25）Inlet scoop, temporary cavity（26）Connection, main tracheae（18）The other end passes through bronchus （22）With multiple gas skirts（20）Connection, tedge（17）One end and deduster（24）Air inlet connects, tedge（17） The other end and temporary cavity（26）Connection；The gas skirt（20）It is made up of the collection section and refraction section being connected with each other, the receipts Integrate section as tubular and offer helicla flute along its axis direction on its inwall（19）, the refraction section is coniform and its cone Part and the bronchus（22）End connects；The deduster includes casing（13）, in the casing（13）It is internally provided with The net air cavity and filter chamber mutually completely cut off, casing（13）Two side on be respectively equipped with air inlet pipe（1）And escape pipe（10）, and institute State net air cavity and escape pipe（10）Connection, the filter chamber and air inlet pipe（1）Connection, air jet pipe is provided with the net air cavity （5）, the air jet pipe（5）One end extends to casing through net air cavity（13）Outside and pulse valve is installed in the end（3）, institute State and multiple filter bags are provided with filter chamber（11）, the filter bag（11）One end connected with the net air cavity, the air jet pipe（5） On be provided with multiple and filter bag（11）One-to-one nozzle；Also include resistant to elevated temperatures organ cover（14）With the be hinged setting in one end end Pre- dirt plate at the top of filter chamber（4）, in the pre- dirt plate（4）The other end be provided with by torsion spring it is inclined along airintake direction Deflector（9）, the deflector（9）End extends to the filter chamber bottom, and in pre- dirt plate（4）Back to air inlet pipe（1）'s Balancing weight is fixed with side（8）, the organ cover（14）One end is connected with the top inner wall of filter chamber cavity, organ cover（14） The other end and the balancing weight（8）Backwards to air inlet pipe（1）The outer wall connection of side.

2. oven top of coke oven dust arrester according to claim 1, it is characterised in that：In the bronchus（22）Install end There is flap valve（21）, the flap valve（21）Connected with the refraction section upper end.

3. oven top of coke oven dust arrester according to claim 1, it is characterised in that：In the main tracheae（18）On be provided with Flue gas switching valve（23）.

A kind of 4. action of low-voltage pulse dust arrester according to claim 1, it is characterised in that：In the balancing weight（8）It is upper End is provided with stopper slot（7）, connecting rod is hinged with the top of the filter chamber（6）, and in connecting rod（6）End roller is installed, The roller-coaster is arranged on stopper slot（7）It is interior.

A kind of 5. action of low-voltage pulse dust arrester according to claim 1, it is characterised in that：In the casing（13）Side wall On condenser is installed（2）, the condenser（2）Gas outlet connected with filter chamber, condenser（2）Air inlet and air inlet pipe （1）Connection.

A kind of 6. action of low-voltage pulse dust arrester according to claim 1, it is characterised in that：In the casing（13）Bottom It is provided with revolving valve（12）.