CN210885930U - Integrative vertical furnace of low order coal blending pyrolysis activation - Google Patents
Integrative vertical furnace of low order coal blending pyrolysis activation Download PDFInfo
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Abstract
The utility model provides a low order coal-mixing pyrolysis activation integrative vertical furnace relates to low order coal-mixing pyrolysis activation equipment field, concretely relates to low order coal-mixing pyrolysis activation integrative vertical furnace, the utility model provides a low order coal-mixing pyrolysis activation integrative vertical furnace, including the furnace body, the furnace body top is provided with the feed inlet, from last multistage high-efficient gas collection device and multistage pyrolysis cloth gas decorative wall and the inclined activation cloth gas device of fixedly setting gradually down in the furnace body, be provided with a plurality of air ducts on the multistage high-efficient gas collection device, the air duct sets up vertically, and the air duct keeps away from the one end of multistage high-efficient gas collection device and stretches out the furnace body; compared with the prior art, the utility model, obvious technical advantage has: the utility model discloses a inside multistage high-efficient gas collection device gos deep into the coal seam, sets up total gas passageway, first gas passageway and second gas passageway simultaneously, and the pyrolysis gas that will mix the coal can in time be derived, can avoid carrying out polycondensation reaction after pyrolysis gas dwell time overlength, is favorable to the improvement of oil yield.
Description
Technical Field
The utility model relates to a low order coal blending pyrolysis activation equipment field, concretely relates to integrative vertical furnace of low order coal blending pyrolysis activation.
Background
At present, the total energy of the semi coke in the country is about 9750 ten thousand tons/year, and the total yield of the semi coke in the country in 2017 is about 6200 ten thousand tons, which accounts for 63.6 percent of the total energy. The semi-coke industry in China now enters a capacity release period, an environment constraint period and a transformation upgrading period. In order to realize the steady growth of the semi-coke industry, accelerate the development of the semi-coke industry to the direction of high-end, diversified, high-efficiency, low-energy consumption and high-benefit, further research and develop and widen the application field of semi-coke products, it is important to continuously develop the market potential and space of the semi-coke.
In recent years, with the development of the semi-coke industry, research and production of semi-coke-based adsorbents have attracted increasing attention and application abroad. The activated semi-coke is directly used for treating waste gas and sewage, and has the characteristics of rich raw material sources, low cost, simple process, easy operation, easy popularization and application and the like. At present, the industrial production and application of products such as active semi-coke prepared by using semi-coke as a raw material are realized. However, the semi coke generated by pyrolyzing the low-rank mixed coal in the vertical furnace needs to be cooled and discharged out of the furnace, and then is sent to an activation process furnace after being heated so as to be activated to prepare the active semi coke, and the process has the following defects: (1) the semi-coke prepared by mixed coal pyrolysis and the semi-coke activation process need to be carried out in different devices, so that the production cost is increased, and the process route is longer; (2) the semi-coke is prepared by pyrolyzing low-price mixed coal in the conventional vertical furnace, and the phenomenon of half-grown coal is easy to occur due to poor air permeability of the mixed coal; (3) the existing vertical furnace is actually operated by a single-layer gas collection array umbrella, the gas collection efficiency is low, meanwhile, the mixed coal pyrolysis easily carries dust to enter a coal gas purification section, and the existing gas collection device has no dust removal function; (4) the spacing between the gas distribution walls is too wide, and the spacing between the gas distribution walls needs to be properly adjusted for mixed coal pyrolysis and lump coal pyrolysis. Therefore need upgrade the transformation to current stove type and gas collection device to can adapt to the pyrolysis of coal mixture and prepare blue charcoal, add the activation section simultaneously at vertical stove pyrolysis section below end, utilize high-temperature steam activation red-hot blue charcoal, thereby realize pyrolysis and activation integration, reduced process flow, make full use of the sensible heat behind the pyrolysis of low order coal mixture, directly get into the activation section and activate, reduced manufacturing cost, shorten process flow, improved the productivity effect, reduced the place and taken, practiced thrift land use.
SUMMERY OF THE UTILITY MODEL
In order to realize the technical purpose, the utility model provides an integrative vertical furnace of low order coal blending pyrolysis activation adopts high-efficient gas collection device of multilayer, multistage pyrolysis gas distribution decorative wall and inclined activation gas distribution device, finally realizes the low order coal blending pyrolysis activation integration, reducible area, shorten process flow, reduce into manufacturing cost, practice thrift the investment, promote the benefit.
The utility model provides a low order coal blending pyrolysis activation integrative vertical furnace, including the furnace body, the furnace body top is provided with the feed inlet, from last to fixedly setting up multistage high-efficient gas collecting device and multistage pyrolysis gas distribution decorative wall and inclined activation gas distribution device down in proper order in the furnace body, be provided with a plurality of air ducts on the multistage high-efficient gas collecting device, the air duct is vertical to be set up, and the air duct keeps away from the one end of multistage high-efficient gas collecting device and stretches out the furnace body, the air duct is fixed with the furnace body and links to each other, be provided with discharging channel on the multistage pyrolysis gas distribution decorative wall, discharging channel keeps away from the one end of multistage high-efficient gas collecting device and;
the multistage efficient gas collecting device comprises a main gas channel and a plurality of first branch gas channels, wherein the first branch gas channels are fixedly connected with the main gas channel, the first branch gas channels are positioned below the main gas channel, the distances from the main gas channel to the two ends of each first branch gas channel are equal, and a second branch gas channel is arranged between every two adjacent first branch gas channels;
the total gas channel comprises a total gas top plate, two total gas side plates and two total gas plugging plates, the two total gas side plates are arranged in parallel and fixedly connected with two corresponding side edges of the total gas top plate, the two total gas plugging plates are arranged in parallel and fixedly connected with two ends of the total gas top plate respectively, the total gas side plates are arranged between the two total gas plugging plates, two ends of each total gas side plate are fixedly connected with the two total gas plugging plates respectively, an area enclosed by the total gas top plate, the total gas side plates and the total gas plugging plates is a first channel, the gas guide tubes penetrate through the total gas top plate and then are communicated with the first channel, and the gas guide tubes are fixedly connected with the total gas top plate;
the first gas supporting channel comprises a first gas supporting top plate, two corresponding side edges of the first gas supporting top plate are respectively and fixedly connected with a first gas supporting side plate, the two first gas supporting side plates are parallel to each other, two ends of the first gas supporting top plate are respectively and fixedly connected with a first gas supporting blocking plate, the two first gas supporting blocking plates are parallel to each other, the two first gas supporting side plates are both positioned in an area between the two first gas supporting blocking plates, two ends of the first gas supporting side plates are respectively and fixedly connected with the two first gas supporting blocking plates, and an area defined by the first gas supporting top plate, the first gas supporting side plate and the first gas supporting blocking plates is a second channel;
the first gas-supporting side plates respectively comprise a plurality of partition plates, included angles between planes of the partition plates and vertical surfaces are equal, intersecting lines between the planes of the partition plates and the vertical surfaces are in a horizontal plane, the partition plates of the same first gas-supporting side plate are uniformly distributed along the vertical direction, and an air inlet gap is formed between every two adjacent partition plates;
the second gas supporting channel comprises a second gas supporting top plate, two corresponding side edges of the second gas supporting top plate are respectively connected with a second gas supporting side plate, the two second gas supporting side plates are arranged in parallel, two ends of the second gas supporting top plate are respectively and fixedly connected with a second gas supporting plugging plate, the two second gas supporting plugging plates are arranged in parallel, the second gas supporting side plates are both positioned in an area between the two second gas supporting plugging plates, two ends of the second gas supporting side plate are respectively and fixedly connected with the second gas supporting plugging plates, and the area defined by the second gas supporting top plate, the second gas supporting side plates and the second gas supporting plugging plates is a third channel;
the third channel is communicated with the second channel through a qiao communication channel, the second channel is communicated with the air guide pipe through a first channel, one end of the qiao communication channel is fixedly connected with the first air branch channel, and the other end of the qiao communication channel is fixedly connected with the second air branch channel; the central axis of the first channel is vertical to the central axis of the second channel, and the central axis of the second channel is parallel to the central axis of the third channel.
Preferably, the chinese intercommunication way includes chinese even the top board and two chinese even the curb plate and two chinese even the shutoff board of parallel arrangement each other;
the two side edges of the top plate connected with the bridge are fixedly connected with two first air supporting side plates which are adjacent to two first air supporting channels respectively, the two ends of the top plate connected with the bridge and the two first air supporting side plates are fixedly connected, the top plate connected with the bridge is vertically arranged, the plane where the top plate connected with the bridge is arranged is parallel to the planes where the first air supporting plate and the second air supporting plate are arranged, and one end of the top plate connected with the bridge, far away from the top plate connected with the bridge, is fixedly connected with the second air supporting top plate;
the equal vertical setting of curb plate is connected to the qiao, and the one end that the side plate is connected to the qiao respectively with two adjacent first gas curb plates that prop up the air passage and be close to each other fixed linking to each other, the other end that the side plate is connected to the qiao all links to each other with second gas top board is fixed, the qiao is connected the curb plate and is less than the qiao at the ascending minimum height of roof in this direction of vertical direction, the qiao is connected the intake air that sets up between curb plate and the qiao link the roof and is passed through the clearance, it corresponds the clearance of admitting air between the top board and is linked together through clearance and first gas curb plate to admit air.
Preferably, the included angle between the plane of the partition plate on the first gas-supporting side plate and the vertical plane is 30-45 degrees.
Preferably, the total gas cap plate comprises two first rectangular plates, one side edge of each first rectangular plate is fixedly connected to form the herringbone total gas cap plate, the included angle between the planes of the two first rectangular plates is 50-65 degrees, and the total gas side plate is respectively and fixedly connected with one side edge of one first rectangular plate.
Preferably, total gas roof board and total gas curb plate and total gas shutoff board are the cavity board, and the cavity region intercommunication each other of total gas roof board and total gas curb plate and total gas shutoff board, are provided with the cooling water inlet on one total gas curb plate, are provided with the cooling water delivery port on another total gas curb plate.
Preferably, the cross section of the first gas supporting plate is arc-shaped, and the central angle corresponding to the arc where the first gas supporting plate is located is 45-65 degrees;
still be connected with two dust removal boards on the first gas ejection board, the equipartition has the bleeder vent on the dust removal board, and two dust removal boards set up about first vertical face symmetry, the centre of a circle that first gas ejection board place arc corresponds all is located first vertical face.
Preferably, the cross section of the second gas supporting top plate is arc-shaped, and the central angle corresponding to the arc where the second gas supporting top plate is located is 110-.
Preferably, the distance between the multi-stage high-efficiency gas collecting device and the multi-stage pyrolysis gas distribution tracery wall is 0.9-1.2 m.
Or preferably, the multistage pyrolysis gas distribution tracery wall comprises a plurality of pyrolysis walls which are arranged in parallel, the pyrolysis walls all cross the inner area of the furnace body and are fixedly connected with the bottom of the furnace body through inclined activation gas distribution devices;
the area between two adjacent inclined type activation gas distribution devices is communicated with the area between two adjacent pyrolysis walls to form a discharging channel;
the inclined activation gas distribution device comprises an activation section distribution wall, the number of the activation section distribution wall is the same as that of the pyrolysis wall, the activation section distribution wall is arranged in parallel with the pyrolysis wall, the first-stage pyrolysis wall, the second-stage pyrolysis wall and the activation section distribution wall are sequentially overlapped from top to bottom, one end face of each of the first-stage pyrolysis wall and the second-stage pyrolysis wall is provided with a gas inlet hole, the first-stage pyrolysis wall and the second-stage pyrolysis wall are uniformly distributed with a plurality of gas distribution holes along the length direction of the first-stage pyrolysis wall and the second-stage pyrolysis wall, the gas distribution holes in the first-stage pyrolysis wall are communicated with the gas inlet holes in the first-stage pyrolysis wall through an airflow channel arranged in the first-stage pyrolysis wall, and the gas distribution holes in the second-stage pyrolysis wall are communicated with;
the activating section material distributing wall is characterized in that activating air inlets are formed in the activating section material distributing wall, one end face of the activating section material distributing wall is provided with an activating air inlet, a plurality of activating air distributing holes are uniformly distributed in two side faces of the activating section material distributing wall along the length direction of the activating section material distributing wall, the activating air distributing holes are obliquely arranged towards the material discharging channel, the activating air distributing holes are communicated with the activating air inlets through air flow channels arranged in the activating section material distributing wall, and the diameter of one end, facing the material discharging channel, of each activating air distributing hole is smaller than that of the end, connected with the air flow channels, of each activating air distributing.
Preferably, the height of the multi-stage pyrolysis gas distribution wall is 3.5-4.2m, the width of the second-stage pyrolysis wall is larger than that of the first-stage pyrolysis wall, the distance between the adjacent second-stage pyrolysis walls is 280-320mm, and the height of the first-stage pyrolysis wall is 0.5-0.8 m.
Compared with the prior art, the utility model, obvious technical advantage has: (1) because the coal mixture is pyrolyzed in the vertical furnace, if the coal bed is thicker, gaps among coal particles are smaller, the compactness is stronger, larger bed resistance is easily caused, the pyrolysis of the coal mixture is influenced, so that pyrolysis gas can be caused to flow down into a discharge system, and a large amount of dust is brought out, the multi-stage high-efficiency gas collecting device of the coal-fired pyrolysis gas; (2) the multi-stage pyrolysis gas distribution tracery wall is adopted, so that the mixed coal can be fully pyrolyzed, meanwhile, the distance between the pyrolysis gas distribution tracery walls is set to be 280-320mm, the mixed coal is more suitable for pyrolysis, the mixed coal pyrolysis and the half-cooked coal can be caused due to the overlarge distance between the pyrolysis gas distribution tracery walls, the mixed coal pyrolysis is different from the lump coal pyrolysis due to the large compactness of the mixed coal and the poor heat conductivity of the coal, the mixed coal pyrolysis temperature is higher than the lump coal pyrolysis temperature, the distance between the pyrolysis gas distribution tracery walls is narrowed, and the mixed coal pyrolysis at the central part of the discharging channel is more favorable; (3) an inclined activation gas distribution mode is adopted, so that the situation that the red-hot semi-coke enters the high-temperature steam gas distribution hole can be avoided, meanwhile, the gas distribution hole is designed in such a way that the diameter of the end, facing the discharging channel, of the activation gas distribution hole is smaller than that of the end, connected with the airflow channel, of the activation gas distribution hole, the steam pressure of the high-temperature steam entering the activation section along with the activation gas distribution hole is increased, and the activation of the semi-coke is facilitated; (4) the vertical distance between the multistage efficient gas collecting device and the multistage pyrolysis gas distribution tracery wall is set to be 0.9-1.2m, and the mixed coal pyrolysis is facilitated by reducing the thickness of an effective bed layer of the mixed coal pyrolysis; (5) after pyrolysis and activation are integrated, the process flow is obviously shortened, the land is saved, the waste heat is utilized, the energy consumption is reduced, the cost expenditure is reduced, and the profit is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural schematic diagram of a multi-stage efficient gas collecting device.
Fig. 3 is a top view of fig. 2.
Fig. 4 is a sectional view a-a of fig. 2.
Reference numerals: 1-furnace body, 2-feed inlet, 3-multistage high-efficiency gas collecting device, 4-multistage pyrolysis gas distribution flower wall, 5-gas guide tube, 6-discharge channel, 7-total gas channel, 8-total gas top plate, 9-total gas side plate, 10-total gas blocking plate, 11-first gas channel, 12-first gas top plate, 13-first gas side plate, 14-first gas blocking plate, 15-separation plate, 16-dust removal plate, 17-qiao communication channel, 18-qiao connection side plate, 19-qiao connection top plate, 20-qiao connection blocking plate, 21-first-stage pyrolysis wall, 22-second-stage pyrolysis wall, 23-activation section material distribution wall, 24-activation gas inlet hole, 25-activation gas distribution hole, 26-connection wall, 27-second gas channel, 28-a second gas supporting top plate, 29-a second gas supporting side plate, 30-a second gas supporting blocking plate and 31-a connecting column.
Detailed Description
The utility model relates to a low order coal blending pyrolysis activation integrative vertical furnace, including furnace body 1, furnace body 1 top is provided with feed inlet 2, from last to down in proper order fixed setting has multistage high-efficient gas collecting device 3 and multistage pyrolysis gas distribution decorative wall 4 and inclined activation gas distribution device in furnace body 1, be provided with a plurality of air ducts 5 on the multistage high-efficient gas collecting device 3, air duct 5 is vertical to be set up, and air duct 5 keeps away from the one end of multistage high-efficient gas collecting device 3 and stretches out furnace body 1, air duct 5 is fixed with furnace body 1 and links to each other, be provided with discharging channel 6 on the multistage pyrolysis gas distribution decorative wall 4, discharging channel 6 keeps away from the one end of multistage high-efficient gas collecting device 3 and stretches out furnace body 1;
the multistage efficient gas collecting device 3 comprises a main gas channel 7 and a plurality of first branch gas channels 11, the first branch gas channels 11 are fixedly connected with the main gas channel 7, the first branch gas channels 11 are located below the main gas channel 7, the distances from the main gas channel 7 to the two ends of each first branch gas channel 11 are equal, and a second branch gas channel 27 is arranged between every two adjacent first branch gas channels 11;
the total gas channel 7 comprises a total gas top plate 8, a total gas side plate 9 and two total gas plugging plates 10, the total gas side plate 9 is arranged in two, the two total gas side plates 9 are arranged in parallel and fixedly connected with two corresponding side edges of the total gas top plate 8, the total gas plugging plates 10 are arranged in two, the two total gas plugging plates 10 are arranged in parallel and fixedly connected with two ends of the total gas top plate 8 respectively, the total gas side plate 9 is arranged between the two total gas plugging plates 10, two ends of the total gas side plate 9 are fixedly connected with the two total gas plugging plates 10 respectively, an area enclosed by the total gas top plate 8, the total gas side plate 9 and the total gas plugging plates 10 is a first channel, the gas guide pipe 5 penetrates through the total gas top plate 8 and then is communicated with the first channel, and the gas guide pipe 5 is fixedly connected with the total gas top plate 8;
the first gas supporting channel 11 comprises a first gas supporting top plate 12, two corresponding side edges of the first gas supporting top plate 12 are fixedly connected with first gas supporting side plates 13 respectively, the two first gas supporting side plates 13 are parallel to each other, two ends of the first gas supporting top plate 12 are fixedly connected with first gas supporting plugging plates 14 respectively, the two first gas supporting plugging plates 14 are parallel to each other, the two first gas supporting side plates 13 are both positioned in an area between the two first gas supporting plugging plates 14, two ends of the first gas supporting side plate 13 are fixedly connected with the two first gas supporting plugging plates 14 respectively, and an area defined by the first gas supporting top plate 12, the first gas supporting side plates 13 and the first gas supporting plugging plates 14 is a second channel;
the first gas-supporting side plates 13 respectively comprise a plurality of partition plates 15, included angles between planes where the partition plates 15 are located and vertical surfaces are equal, intersecting lines between the planes where the partition plates 15 are located and the vertical surfaces are in a horizontal plane, the partition plates 15 of the same first gas-supporting side plate 13 are uniformly distributed along the vertical direction, and a gas inlet gap is formed between every two adjacent partition plates 15;
the second gas supporting channel 27 comprises a second gas supporting top plate 28, two corresponding side edges of the second gas supporting top plate 28 are respectively connected with a second gas supporting side plate 29, the two second gas supporting side plates 29 are arranged in parallel, two ends of the second gas supporting top plate 28 are respectively fixedly connected with a second gas supporting blocking plate 30, the two second gas supporting blocking plates 30 are arranged in parallel, the second gas supporting side plates 29 are both positioned in an area between the two second gas supporting blocking plates 30, two ends of the second gas supporting side plates 29 are respectively fixedly connected with the second gas supporting blocking plates 30, and an area defined by the second gas supporting top plate 28, the second gas supporting side plates 29 and the second gas supporting blocking plates 30 is a third channel; for the reliability of the device, two second branch gas side plates 29 on the same second branch gas channel 27 can be connected through a connecting column 31;
the third channels are communicated with the second channels through a qiao communication channel 17, the second channels are communicated with the air guide pipe 5 through the first channel, one end of the qiao communication channel 17 is fixedly connected with the first air branch channel 11, and the other end of the qiao communication channel 17 is fixedly connected with the second air branch channel 27; the central axis of the first channel is vertical to the central axis of the second channel, and the central axis of the second channel is parallel to the central axis of the third channel.
The connecting channel 17 comprises a top plate 19, two parallel side plates 18 and two parallel closing plates 20;
the two side edges of the top plate 19 connected with the bridge are fixedly connected with two first air supporting side plates 13 which are adjacent to two adjacent first air supporting channels 11 respectively, the two ends of the top plate 19 connected with the bridge and the two first air supporting side plates 13 are fixedly connected with the bridge, the bridge is vertically arranged with the plugging plate 20, the plane where the bridge is connected with the plugging plate 20 is parallel to the planes where the first air supporting plugging plate 14 and the second air supporting plugging plate 30 are located, and one end of the bridge connected with the plugging plate 20, which is far away from the top plate 19 connected with the bridge, is fixedly connected with the second air supporting top plate 28;
the side board 18 is even vertical setting to the qiao, and the one end that the side board 18 is even connected to the qiao is fixed with two adjacent first gas supporting side boards 13 that first gas supporting channel 11 is close to each other respectively, and the other end that the side board 18 is even connected to the qiao all links to each other with second gas supporting roof 28 is fixed, and the qiao is even the side board 18 and is less than the qiao and links roof 19 at ascending minimum height in this direction of height in vertical direction, the qiao is even be provided with between side board 18 and the qiao and link roof 19 and admit air through the clearance, admit air and correspond the air inlet gap between the last division board 15 and be linked together through clearance and first gas supporting side board 13, and the qiao links roof 19 and be the arc-shaped board or by the fixed formation chevron shape roof 19.
The included angle between the plane of the partition plate 15 on the first air supporting side plate 13 and the vertical plane is 30-45 degrees.
The total gas roof plate 8 comprises two first rectangular plates, one side edges of the two first rectangular plates are fixedly connected to form the herringbone total gas roof plate 8, the included angle between the planes of the two first rectangular plates is 50-65 degrees, and the total gas side plate 9 is respectively and fixedly connected with one side edge of one first rectangular plate.
The total gas top plate 8, the total gas side plates 9 and the total gas plugging plates 10 are hollow plates, hollow areas of the total gas top plate 8, the total gas side plates 9 and the total gas plugging plates 10 are communicated with each other, a cooling water inlet is formed in one of the total gas side plates 9, and a cooling water outlet is formed in the other total gas side plate 9.
The cross section of the first gas supporting plate 12 is arc-shaped, and the central angle corresponding to the arc where the first gas supporting plate 12 is located is 45-65 degrees;
the first gas supporting plate 12 is further connected with two dust removing plates 16, the dust removing plates 16 are evenly provided with air holes, the two dust removing plates 16 are symmetrically arranged about a first vertical plane, and the circle centers corresponding to the arcs where the first gas supporting plate 12 is located are located in the first vertical plane.
The cross section of the second gas supporting top plate 28 is arc-shaped, and the central angle corresponding to the arc where the second gas supporting top plate 28 is located is 110 degrees and 130 degrees.
The distance between the multi-stage high-efficiency gas collecting device 3 and the multi-stage pyrolysis gas distribution tracery wall 4 is 0.9-1.2 m.
The multistage pyrolysis gas distribution tracery wall 4 is wrapped by a plurality of pyrolysis walls which are arranged in parallel, the pyrolysis walls all span the inner area of the furnace body 1 and are fixedly connected with the bottom of the furnace body 1 through inclined type activation gas distribution devices;
the area between two adjacent inclined type activation gas distribution devices is communicated with the area between two adjacent pyrolysis walls to form a material channel 6;
the pyrolysis wall comprises a first-stage pyrolysis wall 21 and a second-stage pyrolysis wall 22, the inclined activation gas distribution device comprises activation section distribution walls 23 which are the same in number as the pyrolysis wall and are arranged in parallel with the pyrolysis wall, the first-stage pyrolysis wall 21, the second-stage pyrolysis wall 22 and the activation section distribution walls 23 are sequentially overlapped from top to bottom, one end faces of the first-stage pyrolysis wall 21 and the second-stage pyrolysis wall 22 are respectively provided with a gas inlet hole, the first-stage pyrolysis wall 21 and the second-stage pyrolysis wall 22 are respectively and uniformly provided with a plurality of gas distribution holes along the length direction, the gas distribution holes in the first-stage pyrolysis wall 21 are communicated with the gas inlet holes in the first-stage pyrolysis wall 21 through an airflow channel arranged in the first-stage pyrolysis wall 21, and the gas distribution holes in the second-stage pyrolysis wall 22 are communicated with the gas inlet holes in the second-stage pyrolysis; in order to play the effect of auxiliary stay to total gas passage 7, can extend one-level pyrolysis wall 21 top to total gas passage 7 through connecting wall 26 to play the effect of auxiliary stay to total gas passage 7, set up a plurality of knee wall in the pyrolysis wall place region in furnace body 1 simultaneously, knee wall and first pyrolysis wall and second pyrolysis wall are all fixed continuous, and the knee wall perpendicular to pyrolysis wall length direction sets up.
The activation section material distributing wall 23 is provided with activation air inlets 24, one end face of the activation section material distributing wall 23 is provided with the activation air inlets 24, two side faces of the activation section material distributing wall 23 along the length direction are uniformly provided with a plurality of activation air distributing holes 25, the activation air distributing holes 25 are obliquely arranged towards the material discharging channel 6, the activation air distributing holes 25 are communicated with the activation air inlets 24 through an air flow channel arranged in the activation section material distributing wall 23, and the diameter of one end, facing the material discharging channel 6, of each activation air distributing hole 25 is smaller than that of the end, connected with the air flow channel, of each activation air distributing hole 25.
The height of the multi-stage pyrolysis gas distribution flower wall 4 is 3.5-4.2m, the width of the second-stage pyrolysis wall 22 is larger than that of the first-stage pyrolysis wall 21, the distance between the adjacent second-stage pyrolysis walls 22 is 280-320mm, and the height of the first-stage pyrolysis wall 21 is 0.5-0.8 m.
The utility model discloses specifically use step and theory of operation:
the method comprises the following steps: the mixed coal is filled in the furnace body 1 through the feed port 2, and the mixed coal is ignited and pyrolyzed according to the mixed coal pyrolysis process technology;
step two: the mixed coal starts to be pyrolyzed at the multi-stage pyrolysis gas distribution flower wall 4, a large amount of pyrolysis gas is generated by pyrolysis, because the pressure difference at the upper part of the multi-stage pyrolysis gas distribution flower wall 4 in the furnace is smaller than the pressure difference at the lower part of the multi-stage pyrolysis gas distribution flower wall 4, the pyrolysis gas gradually rises to pass through the coal mixture bed layer and reach the second branch gas channel 27 of the multi-stage high-efficiency gas collecting device 3, because the third channel of the second branch gas channel 27 is communicated with the second channel of the first branch gas channel 11 and the first channel of the main gas channel 7 and is connected with the outside of the furnace body 1 through the gas guide tube 5, the gas pressure of the third channel is smaller than the gas pressure of the coal bed at the same level, the pyrolysis gas enters the third channel and is accumulated more, and then enters the second channel of the first branch gas channel 11 through the connecting channel 17, the pyrolysis gas is collided and decelerated on the dust removing plate and then passes through the through hole, the top plate of the main gas channel is provided with a water cooling jacket which can properly cool to form a little liquid drops so as to lead dust in the pyrolysis gas to land and play a role of dust removal, and finally the pyrolysis gas is discharged out of the furnace through a gas guide pipe 5 and enters a gas purification system;
step three: the red hot high-temperature semi coke generated after the mixed coal is pyrolyzed in the multi-stage pyrolysis gas distribution flower wall 4 gradually moves downwards along with the gravity and enters a discharging channel;
step four: the method comprises the following steps that (1) red hot high-temperature semi-coke enters a discharge channel, high-temperature steam at 800-1100 ℃ is sent into a gap between an adjacent pyrolysis wall and an activation section distribution wall through an activation air inlet 24, the high-temperature steam is in contact reaction with the red hot high-temperature semi-coke, the high-temperature steam is continuously reacted with carbon atoms of the red hot semi-coke to form a plurality of pore channel structures, active semi-coke is formed, and meanwhile, a chemical reaction is carried out to generate partial coal gas, so that pyrolysis is facilitated;
step five: the activated high-temperature incandescent activated semi-coke moves downwards along with gravity to enter a coke quenching section, the high-temperature incandescent activated semi-coke is cooled through a coke quenching process, and according to certain process conditions, the activated semi-coke is cooled to a proper temperature, enters a discharge channel and is finally conveyed to a storage bin.
Compared with the prior art, the utility model, obvious technical advantage has: (1) because the coal mixture is pyrolyzed in the vertical furnace, if the coal bed is thicker, gaps among coal particles are smaller, the compactness is stronger, larger bed resistance is easily caused, the pyrolysis of the coal mixture is influenced, so that pyrolysis coal gas can be caused to flow down into a discharge system, and a large amount of dust is brought out, the multi-stage high-efficiency gas collecting device 3 is deeply arranged in the coal bed, the total gas channel 7, the first branch gas channel 11 and the second branch gas channel 27 are arranged at the same time, the mixed coal pyrolysis gas can be timely led out, the polycondensation reaction can be avoided after the residence time of the pyrolysis gas is overlong, the oil yield is favorably improved, a dust removing plate and a top plate of the total gas channel are arranged in the multi-stage gas collecting device and are arranged into a water cooling jacket, the pyrolysis gas can be properly cooled, a small amount of liquid drops can be formed to naturally reduce the dust in the pyrolysis gas; (2) the multi-stage pyrolysis gas distribution tracery wall 4 is adopted, so that the mixed coal can be fully pyrolyzed, meanwhile, the distance between the pyrolysis gas distribution tracery walls is set to be 280-320mm, the mixed coal is more suitable for pyrolysis, the mixed coal pyrolysis and the half-cooked coal are caused due to overlarge distance between the pyrolysis gas distribution tracery walls, the mixed coal pyrolysis is different from the lump coal pyrolysis due to the large compactness of the mixed coal and the poor heat conductivity of the coal, the mixed coal pyrolysis temperature is higher than the lump coal pyrolysis temperature, the distance between the pyrolysis gas distribution tracery walls is reduced, and the mixed coal pyrolysis at the central part is more facilitated; (3) the inclined type activating air distribution hole 25 mode is adopted, so that the situation that the red-hot semi-coke enters the high-temperature steam air distribution hole can be avoided, meanwhile, the air distribution hole is designed in such a way that the diameter of the end, facing the discharging channel 6, of the activating air distribution hole 25 is smaller than that of the end, connected with the airflow channel, of the activating air distribution hole 25, the steam pressure of the high-temperature steam entering the activating section along with the activating air distribution hole 25 is increased, and the activation of the semi-coke is facilitated; (4) the vertical distance between the multi-stage efficient gas collecting device 3 and the multi-stage pyrolysis gas distribution tracery wall 4 is set to be 0.9-1.2m, and the mixed coal pyrolysis is facilitated by reducing the thickness of an effective bed layer of the mixed coal pyrolysis; (5) after pyrolysis and activation are integrated, the process flow is obviously shortened, the land is saved, the waste heat is utilized, the energy consumption is reduced, the cost expenditure is reduced, and the profit is improved.
Claims (10)
1. A low-order coal-blending pyrolysis activation integrated vertical furnace comprises a furnace body (1), wherein a feed inlet (2) is formed in the top of the furnace body (1), a multi-stage high-efficiency gas collecting device (3), a multi-stage pyrolysis gas distribution tracery wall (4) and an inclined activation gas distribution device are sequentially and fixedly arranged in the furnace body (1) from top to bottom, a plurality of gas guide pipes (5) are arranged on the multi-stage high-efficiency gas collecting device (3), the gas guide pipes (5) are vertically arranged, one ends, far away from the multi-stage high-efficiency gas collecting device (3), of the gas guide pipes (5) extend out of the furnace body (1), discharge channels (6) are arranged on the multi-stage pyrolysis gas distribution tracery wall (4), and one ends, far away from the multi-stage high-efficiency gas collecting device (3), of the discharge channels (6) extend out of the;
it is characterized in that the preparation method is characterized in that,
the multistage efficient gas collection device (3) comprises a total gas channel (7) and a plurality of first branch gas channels (11), wherein the first branch gas channels (11) are fixedly connected with the total gas channel (7), the first branch gas channels (11) are positioned below the total gas channel (7), the distances from the total gas channel (7) to the two ends of the first branch gas channels (11) are equal, and a second branch gas channel (27) is arranged between every two adjacent first branch gas channels (11);
the main gas channel (7) comprises a main gas top plate (8), a main gas side plate (9) and a main gas blocking plate (10), the two main gas side plates (9) are arranged in parallel and fixedly connected with the two corresponding side edges of the main gas top plate (8), the number of the main air plugging plates (10) is two, the two main air plugging plates (10) are arranged in parallel, and are respectively fixedly connected with two ends of a main gas top plate (8), the main gas side plates (9) are arranged between two main gas plugging plates (10), two ends of the main gas side plate (9) are respectively fixedly connected with two main gas plugging plates (10), the area enclosed by the main gas top plate (8), the main gas side plate (9) and the main gas plugging plates (10) is a first channel, the air guide pipes (5) penetrate through the main air top plate (8) and are communicated with the first channel, and the air guide pipes (5) are fixedly connected with the main air top plate (8);
the first gas supporting channel (11) comprises a first gas supporting top plate (12), two corresponding side edges of the first gas supporting top plate (12) are fixedly connected with first gas supporting side plates (13) respectively, the two first gas supporting side plates (13) are parallel to each other, two ends of the first gas supporting top plate (12) are fixedly connected with first gas supporting blocking plates (14) respectively, the two first gas supporting blocking plates (14) are parallel to each other, the two first gas supporting side plates (13) are located in an area between the two first gas supporting blocking plates (14), two ends of the first gas supporting side plates (13) are fixedly connected with the two first gas supporting blocking plates (14) respectively, and an area formed by the first gas supporting top plate (12), the first gas supporting side plates (13) and the first gas supporting blocking plates (14) in a surrounding mode is a second channel;
the first gas-supporting side plates (13) respectively comprise a plurality of partition plates (15), included angles between planes where the partition plates (15) are located and vertical surfaces are equal, intersecting lines between the planes where the partition plates (15) are located and the vertical surfaces are in a horizontal plane, the partition plates (15) of the same first gas-supporting side plate (13) are uniformly distributed along the vertical direction, and a gas inlet gap is formed between every two adjacent partition plates (15);
the second gas supporting channel (27) comprises a second gas supporting top plate (28), two corresponding side edges of the second gas supporting top plate (28) are respectively connected with a second gas supporting side plate (29), the two second gas supporting side plates (29) are arranged in parallel, two ends of the second gas supporting top plate (28) are respectively fixedly connected with second gas supporting plugging plates (30), the two second gas supporting plugging plates (30) are arranged in parallel, the second gas supporting side plates (29) are respectively positioned in an area between the two second gas supporting plugging plates (30), two ends of each second gas supporting side plate (29) are respectively fixedly connected with the second gas supporting plugging plates (30), and an area enclosed by the second gas supporting top plate (28), the second gas supporting side plates (29) and the second gas supporting plugging plates (30) is a third channel;
the third channel is communicated with the second channel through a qiao communication channel (17), the second channel is communicated with the air guide pipe (5) through the first channel, one end of the qiao communication channel (17) is fixedly connected with the first air supporting channel (11), and the other end of the qiao communication channel is fixedly connected with the second air supporting channel (27); the central axis of the first channel is vertical to the central axis of the second channel, and the central axis of the second channel is parallel to the central axis of the third channel.
2. The integrated vertical furnace for pyrolysis and activation of low-rank mixed coal according to claim 1, wherein the Qiao communication channel (17) comprises a Qiao connecting top plate (19), two Qiao connecting side plates (18) arranged in parallel and two Qiao connecting plugging plates (20) arranged in parallel;
the two side edges of the top plate (19) connected with the bridge are fixedly connected with two first air supporting side plates (13) which are adjacent to two first air supporting channels (11) respectively, the bridge is connected with the two ends of the top plate (19) connected with the bridge and the two first air supporting side plates (13) fixedly connected, the bridge is connected with the plugging plate (20) vertically, the bridge is connected with the plugging plate (20) and is parallel to the plane where the bridge is connected with the first air plugging plate (14) and the second air plugging plate (30), and one end, far away from the bridge connected with the top plate (19), of the bridge is fixedly connected with the second air supporting top plate (28);
the side board (18) is even vertical setting to the qiao, and the one end that the side board (18) is even to the qiao links two first gas side board (13) that are close to each other with two adjacent first gas channels (11) respectively fixed linking to each other, the other end that the side board (18) is even to the qiao links all with second gas roof (28) fixed linking to each other, the qiao links the height of side board (18) in vertical direction and is less than the qiao and links roof (19) minimum height in this direction, the qiao links side board (18) and the qiao and links to be provided with between roof (19) and admit air and pass through the clearance, admit air and correspond the clearance of admitting air between last division board (15) through clearance and first gas side board (13) and be linked together.
3. The low-rank mixed coal pyrolysis activation integrated vertical furnace as claimed in claim 2, wherein the included angle between the plane of the partition plate (15) on the first gas-supporting side plate (13) and the vertical plane is 30-45 degrees.
4. The low-rank mixed coal pyrolysis activation integrated vertical furnace as claimed in claim 3, wherein the total gas top plate (8) comprises two first rectangular plates, one side edge of the two first rectangular plates is fixedly connected to form a herringbone total gas top plate (8), an included angle between planes of the two first rectangular plates is 50-65 degrees, and the total gas side plates (9) are respectively and fixedly connected with one side edge of one first rectangular plate.
5. The vertical furnace integrating pyrolysis and activation of low-rank mixed coal as claimed in claim 4, wherein the total gas top plate (8), the total gas side plate (9) and the total gas blocking plate (10) are hollow plates, the hollow areas of the total gas top plate (8), the total gas side plate (9) and the total gas blocking plate (10) are communicated with each other, one total gas side plate (9) is provided with a cooling water inlet, and the other total gas side plate (9) is provided with a cooling water outlet.
6. The low-rank mixed coal pyrolysis and activation integrated vertical furnace as claimed in claim 5, wherein the cross section of the first gas supporting plate (12) is arc-shaped, and the central angle of the arc where the first gas supporting plate (12) is located is 45-65 degrees;
still be connected with two dust removal boards (16) on first gas supporting board (12), the equipartition has the bleeder vent on dust removal board (16), and two dust removal boards (16) set up about first vertical face symmetry, the centre of a circle that first gas supporting board (12) place arc corresponds all is located first vertical face.
7. The low-rank mixed coal pyrolysis and activation integrated vertical furnace as claimed in claim 6, wherein the cross section of the second branch gas ceiling plate (28) is arc-shaped, and the central angle of the arc where the second branch gas ceiling plate (28) is located is 110-130 degrees.
8. The low-rank mixed coal pyrolysis and activation integrated vertical furnace as claimed in claim 7, wherein the distance between the multistage high-efficiency gas collecting device (3) and the multistage pyrolysis gas distribution tracery wall (4) is 0.9-1.2 m.
9. The low-rank mixed coal pyrolysis and activation integrated vertical furnace according to any one of claims 1 to 8, wherein the multistage pyrolysis gas distribution perforated wall (4) comprises a plurality of pyrolysis walls which are arranged in parallel, span the inner area of the furnace body (1), and are fixedly connected with the bottom of the furnace body (1) through inclined gas activation and distribution devices;
the area between two adjacent inclined type activation gas distribution devices is communicated with the area between two adjacent pyrolysis walls to form a discharging channel (6);
the pyrolysis wall comprises a first-stage pyrolysis wall (21) and a second-stage pyrolysis wall (22), the inclined activation gas distribution device comprises the same number of inclined activation gas distribution devices as the pyrolysis walls, and an activation section material distributing wall (23) arranged in parallel with the pyrolysis wall, wherein the first-stage pyrolysis wall (21), the second-stage pyrolysis wall (22) and the activation section material distributing wall (23) are sequentially overlapped from top to bottom, air inlets are formed in one end face of each of the first-stage pyrolysis wall (21) and the second-stage pyrolysis wall (22), a plurality of air distribution holes are uniformly distributed in the length direction of each of the first-stage pyrolysis wall (21) and the second-stage pyrolysis wall (22), the air distribution holes in the first-stage pyrolysis wall (21) are communicated with the air inlets in the first-stage pyrolysis wall (21) through air flow channels arranged in the first-stage pyrolysis wall (21), and the air distribution holes in the second-stage pyrolysis wall (22) are communicated with the air inlets in the second-stage pyrolysis wall (22) through air flow channels arranged in the second-stage pyrolysis wall (22);
the activating section material distributing wall is characterized in that activating air inlets (24) are formed in the activating section material distributing wall (23), one end face of the activating section material distributing wall (23) is provided with the activating air inlets (24), a plurality of activating air distributing holes (25) are uniformly distributed in two side faces of the activating section material distributing wall (23) along the length direction of the activating section material distributing wall, the activating air distributing holes (25) are obliquely arranged towards the outlet of the discharging channel (6), the activating air distributing holes (25) are communicated with the activating air inlets (24) through air flow channels arranged in the activating section material distributing wall (23), and the diameter of one end, facing the discharging channel (6), of each activating air distributing hole (25) is smaller than that of the end, connected with the air flow channels, of each activating air distributing hole (25).
10. The low-rank mixed coal pyrolysis activation integrated vertical furnace as claimed in claim 9, wherein the height of the multi-stage pyrolysis gas distribution wall (4) is 3.5-4.2m, the width of the secondary pyrolysis wall (22) is larger than the width of the primary pyrolysis wall (21), the distance between adjacent secondary pyrolysis walls (22) is 280-320mm, and the height of the primary pyrolysis wall (21) is 0.5-0.8 m.
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| CN116254419A (en) * | 2023-03-10 | 2023-06-13 | 安徽华铂再生资源科技有限公司 | Slag discharging structure of side-blowing furnace for recycling lead storage battery |
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