CN102863972A - Tunnel-type carbonization furnace with burning gallery - Google Patents
Tunnel-type carbonization furnace with burning gallery Download PDFInfo
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- CN102863972A CN102863972A CN2012103603618A CN201210360361A CN102863972A CN 102863972 A CN102863972 A CN 102863972A CN 2012103603618 A CN2012103603618 A CN 2012103603618A CN 201210360361 A CN201210360361 A CN 201210360361A CN 102863972 A CN102863972 A CN 102863972A
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Abstract
The invention relates to a tunnel-type carbonization furnace with a burning gallery. A sealing device is arranged between two sides of a plurality of kiln cars and lateral walls of two sides of a tunnel-type furnace body, the sealing device is suitable to isolate an upper furnace chamber located above the sealing device and a lower furnace chamber located below the sealing device, and the upper furnace chamber is communicated with a flue. The burning gallery is arranged on each kiln car and located below the sealing device, openings at two ends of the burning gallery respectively face to the lateral walls of two sides of the tunnel-type furnace body, a top wall of the burning gallery is a heat conduction layer, and carbonization raw materials are placed on the upper surface of the heat conduction layer. A first gas nozzle and a high pressure oxygen adding tube are arranged on lateral walls of any one or two sides of the tunnel-type furnace body. By means of the burning gallery, heat generated by burning of gas and oxygen is directly led to the carbonization raw materials through the heat conduction layer, heat loss is small, heating on furnace chambers of the tunnel-type furnace is achieved through the burning gallery, the heating efficiency is effectively improved, and the energy consumption of the carbonization furnace can be further reduced.
Description
Technical field
The invention belongs to the charing field, be specifically related to a kind of tunnel like charring furnace that is provided with combustion channels.
Background technology
Charring furnace is that coal is fired into coke under the condition of secluding air, and isolates the device of coal gas and coal tar from product.In the prior art, Chinese patent literature CN102492431A discloses a kind of tunnel like charring furnace, this charring furnace is provided with tunnel furnace and coke dry quenching furnace, in described body of heater, be disposed with preheating section, dryer section and charing section, run through described tunnel furnace and coke dry quenching furnace and be provided with track, at described track travelling block is installed, thereby described coaster is suitable for moving the serialization production that has realized coke along track; This charring furnace also is provided with flue, and described flue comprises main flue, branch flue and upper flue, and wherein said upper flue is arranged on the top of described tunnel furnace; Described branch flue is arranged in the two side at described tunnel furnace middle part, described main flue is arranged on the top of described tunnel furnace, described main flue is connected with described branch flue and described upper flue respectively, and described upper flue is connected by the passage that is provided with flashboard with described branch flue; On described tunnel furnace, also be provided with air distribution outlet, any one in described air distribution outlet and described main flue, branch flue and the upper flue or a plurality of being connected; Also be provided with oxygenation port on the sidewall of described tunnel furnace, described oxygenation port is connected with the inside of described tunnel furnace.This tunnel like charring furnace carries out oxygenation by described air distribution outlet and oxygenation port to described flue and body of heater inside when operation, improved the efficiency of combustion of flue gas.
Above-mentioned charring furnace send oxygen by oxygenation port in described furnace chamber, the coal gas that goes out with the coke high temperature carbonization burns, simultaneously cooperates to form with flue gas in branch flue and the upper flue and circulate, thereby realize the charing of moulded coal, but the above-mentioned defective that exists when utilizing combustion product gases heating coke is, flue gas can occur directly to contact with coal in combustion processes, owing to containing a small amount of oxygen in the flue gas, therefore can cause the surface portion generation oxidation of coke, form one deck stratum, cause the ash oontent of coke finished product to increase, thereby had a strong impact on the quality of coke.In order to solve this technical problem, proposed to utilize the gas burner coal raw material to be carried out the charring furnace of conduction heating in the prior art, a kind of tunnel coke-oven is disclosed such as Chinese patent literature CN2745923Y, include body of heater and furnace chamber, described body of heater is tunnel structure, be provided with several combustion chambers and a main flue in the every side of this body of heater, this main flue links to each other by branch flue with a combustion chamber of going out, be provided with venting port at this main flue, and in the combustion chamber, optionally be provided with the first gasburner, this first gasburner links to each other with gas line, is provided with heat-conducting layer between described combustion chamber and the furnace chamber; Be provided with air passageways in the combustion chamber of this tunnel like charring furnace, introduce the air that is rich in a large number oxygen by described air passageways, utilize described air to match with coal gas and realize fully burning.
Above-mentioned charring furnace fully burns by the coal gas in the combustion chamber and air and produces a large amount of flue gas and heat energy, and furnace chamber is carried out conduction heating, makes the coke in the furnace chamber realize destructive distillation under anoxic condition, thereby has effectively avoided the oxidation of coke.But the combustion chamber in the above-mentioned charring furnace is arranged on the sidewall of charring furnace, although between combustion chamber and furnace chamber, be provided with heat-conducting layer, but because charring furnace is in actual moving process, the coke that is deposited on the kiln car can not directly contact with described heat-conducting layer, but have certain gap, and therefore just causing in heat conducting process, the loss of heat is larger, heating efficiency is lower, and then causes the energy consumption of charring furnace higher.
Summary of the invention
The technical problem to be solved in the present invention is that the combustion chamber in the charring furnace is arranged on the sidewall of charring furnace in the prior art, in actual moving process, the loss of heat is larger, heating efficiency is lower, and then the higher problem of the energy consumption that causes charring furnace, and then provide a kind of energy consumption the lower tunnel like charring furnace that is provided with combustion channels.
The technical scheme that is provided with the tunnel like charring furnace of combustion channels of the present invention is:
A kind of tunnel like charring furnace that is provided with combustion channels comprises:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track;
A plurality of kiln cars, described kiln car are suitable for along described rail moving;
Flue;
In described tunnel type furnace body, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described flue;
Be provided with combustion channels at each described kiln car, described combustion channels is arranged on the below of described tightness system, the both ends open of described combustion channels arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels is heat-conducting layer, and the charing raw material is placed on described heat-conducting layer upper surface;
Any side or both sides sidewall at described tunnel type furnace body are provided with the first gasburner and high pressure oxygen-adding tube, one end opening of each described combustion channels is connected with described the first gasburner and high pressure oxygen-adding tube, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.
Any side or both sides sidewall at described tunnel type furnace body are provided with the negative pressure settling chamber, described the first gasburner and high pressure oxygen-adding tube are arranged in the described negative pressure settling chamber, one end opening of each described combustion channels is connected with described negative pressure settling chamber, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.
Described flue comprises upper flue and main flue, described upper flue is connected with described main flue, described main flue is positioned at the outside of described body of heater, described upper flue is arranged in the sidewall of described tunnel type furnace body both sides, one end opening of each described combustion channels is connected with described negative pressure settling chamber, and the other end opening of described combustion channels is connected with described upper flue;
Described upper chamber is connected with described main flue.
Described negative pressure settling chamber is arranged in the both sides sidewall of described tunnel type furnace body, and in per two adjacent described combustion channelies, the flow direction of combustion gases is opposite.
Described tightness system comprises:
Be connected the sealing plate that arranges with described kiln car both sides sidewall;
At the sealing groove that described tunnel type furnace body both sides sidewall arranges, described sealing plate is nested to be arranged in the described sealing groove, closely is connected successively before and after the sealing plate of the described a plurality of kiln cars in the described charing section, with described upper chamber and the isolation of bottom furnace chamber.
Be provided with a plurality of combustion channelies on each kiln car, the spacing between per two adjacent described combustion channelies is less than or equal to 30cm.
Be communicated with each described combustion channels on described sidewall and be provided with branch flue, described combustion channels is connected with described upper flue by described branch flue.
The gas velocity that sprays in the described high pressure oxygen-adding tube is 6-15m/s.
Sidewall at described tunnel type furnace body is provided with gas flue, and described gas flue is communicated with described upper chamber and described negative pressure settling chamber.
Top at described tunnel type furnace body is provided with channel of gas collection, and described channel of gas collection is connected with the furnace chamber of described tunnel type furnace body, is connected with the static decoking device with described channel of gas collection.
Be connected with the coal gas circulation tube with the purified gas outlet of described static decoking device, described coal gas circulation tube is connected with described the first gasburner.
Be provided with oxygenation port at described upper flue and described branch flue.
In described upper flue, also be provided with the second gasburner.
Also be provided with: isolating door, described isolating door are arranged between described charing section and the described pressure cooling section;
Towing mechanism, described towing mechanism are suitable for the kiln car by described isolating door being separated with the kiln car of back and drawing to described pressure cooling section.
The advantage that is provided with the tunnel like charring furnace of combustion channels of the present invention is:
(1) the tunnel like charring furnace that is provided with combustion channels of the present invention, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described flue; Be provided with combustion channels at each described kiln car, described combustion channels is arranged on the below of described tightness system, the both ends open of described combustion channels arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels is heat-conducting layer, and the charing raw material is placed on described heat-conducting layer upper surface; Any side or both sides sidewall at described tunnel type furnace body are provided with the first gasburner and high pressure oxygen-adding tube, one end opening of each described combustion channels is connected with described the first gasburner and high pressure oxygen-adding tube, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.The present invention is by arranging above-mentioned combustion channels, the heat that coal gas and oxygen combustion produce directly is transmitted to the charing raw material by heat-conducting layer, and calorific loss is less, by the heating of described combustion channels realization to the tunnel furnace furnace chamber, Effective Raise heating efficiency, and then reduced the energy consumption of charring furnace.
Tunnel like charring furnace of the present invention, owing to be provided with tightness system, so that can not be passed into the top of described tightness system from described combustion channels combustion gases out.Can the breakseal device atmosphere of upper chamber of top, because charing raw material generation destructive distillation meeting produces a large amount of coal gas, therefore be maintained pressure-fired in the upper chamber of tightness system top, because the thorough starvation of described upper chamber, therefore the coke that obtains of destructive distillation can not produce stratum, and the coke final product quality is good.
(2) the tunnel like charring furnace that is provided with combustion channels of the present invention, on any side of described tunnel type furnace body or both sides sidewall, also be provided with the negative pressure settling chamber, be provided with the first gasburner and high pressure oxygen-adding tube in the described negative pressure settling chamber, one end opening of each described combustion channels is connected with described negative pressure settling chamber, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.Tunnel like charring furnace of the present invention is when operation, in described negative pressure settling chamber, spray into coal gas by described gasburner, spray into oxygen-containing gas by described high pressure oxygen-adding tube again, oxygen-containing gas and coal gas at high temperature burn, flame pours described combustion channels under the drive of high pressure gas, and heat is conducted to described coal raw material by described heat-conducting layer heat, the present invention is by arranging described negative pressure settling chamber, so that described coal gas and oxygen-containing gas can fully burn.
(3) the tunnel like charring furnace that is provided with combustion channels of the present invention, described flue comprises upper flue and main flue, described upper flue is connected with described main flue, described main flue is positioned at the outside of described body of heater, described upper flue is arranged in the sidewall of described tunnel type furnace body both sides, one end opening of each described combustion channels is connected with described negative pressure settling chamber, and the other end opening of described combustion channels is connected with described upper flue; Pass through this setup, the combustion product gases that produces in the described combustion channels enters the upper flue that is positioned on the sidewall of described tunnel type furnace body both sides, and heat is delivered in the described furnace chamber by described upper flue, combine with the type of heating of combustion channels, further improved heating efficiency.
(4) the tunnel like charring furnace that is provided with combustion channels of the present invention is provided with a plurality of combustion channelies by arranging on each kiln car, the spacing between the described combustion channels on per two adjacent kiln cars is less than or equal to 30cm.So that the spacing between described two combustion channelies is less, negative pressure settling chamber combustion gases out can effectively enter described combustion channels, have further improved the efficient of burning, have optimized combustion efficacy.
(5) the tunnel like charring furnace that is provided with combustion channels of the present invention is provided with gas flue at the sidewall of described tunnel type furnace body, and described gas flue is communicated with furnace chamber and the described negative pressure settling chamber of described sealing groove top.Tunnel like charring furnace of the present invention, be maintained pressure-fired in the described sealing plate upper chamber, in the described negative pressure settling chamber, be provided with the high pressure oxygen-adding tube towards described combustion channels, and the air outlet of described combustion channels is connected with the branch flue that is negative pressure, upper flue, therefore be negative pressure in the described negative pressure settling chamber, so can enter described negative pressure settling chamber by described gas flue in the coal gas that goes out of the coke destructive distillation in the sealing plate upper chamber, thereby realized taking full advantage of of dry distillation gas.
Description of drawings
In order to make content of the present invention more be convenient to understand, below in conjunction with the drawings and specific embodiments the tunnel like charring furnace that is provided with combustion channels of the present invention is further elaborated.
It is the structure iron that is provided with the tunnel like charring furnace of combustion channels of the present invention shown in Fig. 1;
The sectional view that is provided with the tunnel like charring furnace of combustion channels of the present invention as shown in Figure 2;
The sectional view that is provided with the tunnel like charring furnace of negative pressure settling chamber of the present invention as shown in Figure 3 and Figure 4;
The structure iron that is provided with the tunnel like charring furnace of dividing plate of the present invention as shown in Figure 5;
The sectional view that is provided with the tunnel like charring furnace of gas flue of the present invention as shown in Figure 6;
The structure iron that is provided with the tunnel like charring furnace of isolating door of the present invention as shown in Figure 7;
Wherein, Reference numeral is:
The 1-preheating section; 2-charing section; 3-forces cooling section; The 4-kiln car; The 5-track; The 6-upper flue; The 7-main flue; The 8-sealing plate; The 9-sealing groove; The 10-combustion channels; 11-negative pressure settling chamber; The 12-gasburner; 13-high pressure oxygen-adding tube; The 14-branch flue; The 15-gas flue; The 16-channel of gas collection; The 17-isolating door; 18-enters the kiln preparation room; The 19-oxygenless gas pours pipe; The 20-dividing plate.
Embodiment
Embodiment 1
The tunnel like charring furnace that is provided with combustion channels described in the present embodiment comprises as depicted in figs. 1 and 2:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track 5, and described tunnel type furnace body is provided with into kiln preparation room 18, preheating section 1, charing section 2, forces cooling section 3 along the travel direction of kiln car 4;
A plurality of kiln cars 4, described kiln car are suitable for moving along described track 5;
Flue, described flue in the present embodiment comprises upper flue 6 and main flue 7, described upper flue 6 is positioned on the both sides sidewall of described tunnel type furnace body, and described main flue 7 is positioned at the outside of described body of heater and is positioned at the top of described body of heater, and described upper flue 6 is connected with described main flue 7;
In described tunnel type furnace body, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described main flue;
Tightness system comprises described in the present embodiment: the sealing plate 8 that arranges in the both sides of described kiln car 4, the sealing groove 9 that sidewall in described kiln car 4 both sides arranges, described sealing plate 8 nested being arranged in the described sealing groove 9, sealing plate 8 front and back of described a plurality of kiln car 4 closely are connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
Be provided with combustion channels at each described kiln car, described combustion channels is arranged on the below of described tightness system, the both ends open of described combustion channels arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels is heat-conducting layer, and the charing raw material is placed on the described heat-conducting layer;
Be provided with the first gasburner and high pressure oxygen-adding tube at the preheating section of described tunnel type furnace body and a side sidewall of charing section, one end opening of each described combustion channels is connected with described the first gasburner and high pressure oxygen-adding tube, described high pressure oxygen-adding tube is towards described combustion channels setting, and the oxygen rates of ejection is 15m/s in the described high pressure oxygen-adding tube 13; The other end opening of described combustion channels is connected with described upper flue.
Force cooling section 3 to adopt the mode of dry coke quenching to cool off described in the present embodiment, in described pressure cooling section 3, be provided with oxygenless gas and pour pipe 19, the inlet end that described oxygenless gas is filled with pipe is arranged on the section start and exit and roof of described pressure cooling section 3, also be provided with the oxygenless gas circulation tube at described pressure cooling section 3, by described oxygenless gas circulation tube oxygenless gas is extracted out, be connected with Ceramic dust collector and water cooling plant with described oxygenless gas circulation tube, the oxygenless gas after dedusting and water-cooled pours pipe 19 by described oxygenless gas again and leads in the described pressure cooling section 3.
The operational process of the tunnel like charring furnace that is provided with combustion channels described in the present invention is:
(1) kiln car 4 moves along described track 5, be introduced into the described kiln preparation room 18 of advancing, enter kiln preparation room 18 and enter successively described preheating section 1, charing section 2 and force cooling section 3 by described again, enter described preheating section 1, charing section 2 and force sealing plate 8 front and back of a plurality of kiln cars 4 of cooling section 3 closely to be connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
(2) in the described combustion channels of each kiln car, spray into combustion gases by described the first gasburner and high pressure oxygen-adding tube, the flue gas that forms after gas burns in described combustion channels enters described upper flue, described charing raw material carries out destructive distillation and forms carbonization product under the heating of combustion channels, the coal gas that destructive distillation produces is discharged by described main flue;
(3) after kiln car 4 enters described pressure cooling section, carry out to come out of the stove after quenching and the cooling at described pressure cooling section.
Need to prove, as preferred embodiment, upper flue described in the present embodiment is arranged on the sidewall of described tunnel type furnace body both sides, and the both ends open of each described combustion channels 10 is connected with described the first gasburner and high pressure oxygen-adding tube and described upper flue 6 respectively, thereby so that described upper flue has played the effect of the furnace chamber of described tunnel type furnace body being carried out boosting, as selectable embodiment, described flue also can adopt in the prior art arbitrarily set-up mode, below such as tunnel type furnace body as described in flue can being arranged on, one end of described combustion channels is connected with described the first gasburner and high pressure oxygen-adding tube, and the other end is connected with the described flue of the below that is positioned at described tunnel furnace by exhaust gases passes.
Embodiment 2
The tunnel like charring furnace that is provided with combustion channels 10 such as Fig. 3, Fig. 4 and shown in Figure 5 described in the present embodiment comprises:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track 5;
A plurality of kiln cars 4, described a plurality of kiln cars 4 are suitable for moving along described track 5, and described tunnel type furnace body is provided with into kiln preparation room 18, preheating section 1, charing section 2, forces cooling section 3 along the travel direction of kiln car 4;
Flue, the described flue in the present embodiment comprises upper flue 6 and main flue 7, and described upper flue 6 is positioned on the both sides sidewall of described tunnel type furnace body, and described main flue 7 is positioned at the top of described body of heater, and described upper flue 6 is connected with described main flue 7;
In described tunnel type furnace body, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described main flue;
Tightness system comprises described in the present embodiment: the sealing plate 8 that arranges in the both sides of described kiln car 4, the sealing groove 9 that sidewall in described kiln car 4 both sides arranges, described sealing plate 8 nested being arranged in the described sealing groove 9, sealing plate 8 front and back of described a plurality of kiln car 4 closely are connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
Be provided with combustion channels 10 at each described kiln car 4, described combustion channels 10 runs through described kiln car 4 and arranges, the both ends open of described combustion channels 10 arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels 10 is heat-conducting layer, the charing raw material is placed on the described heat-conducting layer, be provided with 2 combustion channelies 10 on each described kiln car 4 in the present embodiment, described 2 combustion channelies 10 arrange before and after the travel direction of kiln car 4;
Also be provided with negative pressure settling chamber 11, be provided with the first gasburner 12 and high pressure oxygen-adding tube 13 in the described negative pressure settling chamber 11, the both ends open of each described combustion channels 10 is connected with described negative pressure settling chamber 11 and described upper flue 6 respectively, and described high pressure oxygen-adding tube 13 is towards described blast tube setting; The oxygen rates of ejection is 6m/s in the described high pressure oxygen-adding tube 13.
The furnace chamber that described tunnel type furnace body is positioned at described tightness system top is connected with described upper flue 6.
Force cooling section 3 to adopt the mode of dry coke quenching to cool off described in the present embodiment, be provided with dividing plate 20 between described pressure cooling section 3 and the described charing section 2, described dividing plate 20 is arranged on the top of described kiln car 4, in described pressure cooling section 3, be provided with oxygenless gas and pour pipe 19, the inlet end that described oxygenless gas is filled with pipe is arranged on the section start and exit and roof of described pressure cooling section 3, also be provided with the oxygenless gas circulation tube at described pressure cooling section 3, by described oxygenless gas circulation tube oxygenless gas is extracted out, be connected with Ceramic dust collector and water cooling plant with described oxygenless gas circulation tube, oxygenless gas after dedusting and water-cooled pours pipe 19 by described oxygenless gas again and leads in the described pressure cooling section 3, described dividing plate 20 has effectively been realized the isolation between pressure cooling section 3 and the charing section 2, has avoided forcing cooling section 3 to affect the atmosphere of charing section 2.
In per two adjacent described combustion channelies 10, the flow direction of combustion gases is opposite in the present embodiment, and every adjacent two described combustion channelies 10 as shown in Figure 3 and Figure 4.
(1) kiln car 4 moves along described track 5, be introduced into the described kiln preparation room 18 of advancing, enter kiln preparation room 18 and enter successively described preheating section 1, charing section 2 and force cooling section 3 by described again, enter described preheating section 1, charing section 2 and force sealing plate 8 front and back of a plurality of kiln cars 4 of cooling section 3 closely to be connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
(2) flue gas of the coal gas of described the first gasburner ejection and the ejection of high pressure oxygen-adding tube is after the mixed firing of negative pressure settling chamber, combustion channels on the kiln car that enters described preheating section and charing section under the jetting action of described high pressure oxygen-adding tube, the flue gas that forms after gas burns in described combustion channels enters described upper flue, described charing raw material carries out destructive distillation and forms carbonization product under the heating of combustion channels, the coal gas that destructive distillation produces is discharged by described main flue;
(3) after kiln car 4 enters described pressure cooling section, carry out to come out of the stove after quenching and the cooling at described pressure cooling section.
Embodiment 3
The tunnel like charring furnace that a kind of described in the present embodiment is provided with combustion channels 10 comprises as shown in Figure 6:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track 5;
A plurality of kiln cars 4, described a plurality of kiln cars 4 are suitable for moving along described track 5; Along the travel direction of kiln car 4, described tunnel like charring furnace is provided with into kiln preparation room 18, preheating section 1, charing section 2, force cooling section 3 and kiln discharge preparation room.Force the set-up mode of cooling section with embodiment 2 described in the present embodiment;
Flue, described flue comprise upper flue 6 and main flue 7, and described upper flue 6 is positioned on the both sides sidewall of described tunnel type furnace body, and described main flue 7 is positioned at the top of described body of heater, and described upper flue 6 is connected with described main flue 7;
In described tunnel type furnace body, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described main flue;
Tightness system comprises described in the present embodiment: the sealing plate 8 that arranges in the both sides of described kiln car 4, the sealing groove 9 that sidewall in described kiln car 4 both sides arranges, described sealing plate 8 nested being arranged in the described sealing groove 9, sealing plate 8 front and back of described a plurality of kiln car 4 closely are connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
The main flue of the present embodiment and described tunnel type furnace body is communicated with channel of gas collection 16, and described channel of gas collection 16 is connected with the furnace chamber of described tunnel type furnace body, is connected with the static decoking device with described channel of gas collection 16.Be connected with the coal gas circulation tube with the purified gas outlet of described static decoking device, described coal gas circulation tube is connected with described the first gasburner 12.
Be provided with combustion channels 10 at each described kiln car 4, described combustion channels 10 runs through described kiln car 4 and arranges, the both ends open of described combustion channels 10 arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels 10 is heat-conducting layer, and the charing raw material is placed on the described heat-conducting layer; Be provided with a combustion channels 10 on each kiln car 4, the spacing that the described combustion channels on per two adjacent kiln cars 4 is 10 is 10cm.
Also be provided with negative pressure settling chamber 11, be provided with the first gasburner 12 and high pressure oxygen-adding tube 13 in the described negative pressure settling chamber 11, the both ends open of each described combustion channels 10 is connected with described negative pressure settling chamber 11 and described upper flue 6 respectively, and described high pressure oxygen-adding tube 13 is towards described blast tube setting;
The furnace chamber that described tunnel type furnace body is positioned at described sealing groove 9 tops is connected with described flue, and the oxygen rates of ejection is 12m/s in the described high pressure oxygen-adding tube 13.
Tunnel like charring furnace described in the present embodiment is communicated with each described combustion channels and is provided with branch flue 14, and described combustion channels is connected with described upper flue 6 by described branch flue 14; Be provided with oxygenation port at described upper flue 6 and described branch flue 14.
Sidewall at described tunnel type furnace body is provided with gas flue 15, and described gas flue 15 is communicated with furnace chamber and the described negative pressure settling chamber 11 of described sealing groove 9 tops.
(1) kiln car 4 moves along described track 5, be introduced into the described kiln preparation room 18 of advancing, enter kiln preparation room 18 and enter successively described preheating section 1, charing section 2 and force cooling section 3 by described again, enter described preheating section 1, charing section 2 and force sealing plate 8 front and back of a plurality of kiln cars 4 of cooling section 3 closely to be connected successively, will be positioned at the upper chamber of sealing plate 8 tops and the bottom furnace chamber isolation of below;
(2) flue gas of the coal gas of described the first gasburner ejection and the ejection of high pressure oxygen-adding tube is after the mixed firing of negative pressure settling chamber, combustion channels on the kiln car that enters described preheating section and charing section under the jetting action of described high pressure oxygen-adding tube, the flue gas that forms after gas burns in described combustion channels enters described branch flue and upper flue, described charing raw material carries out destructive distillation and forms carbonization product under the heating of combustion channels, the coal gas that destructive distillation produces enters described main flue, after described static decoking device is removed tar, enter described the first gasburner 12 through described coal gas circulation tube again, thereby realized the recycling of dry distillation gas;
The present embodiment passes into air by described oxygenation port in described upper flue 6 and described branch flue 14, promote the abundant burning of flue gas;
(3) after kiln car 4 enters described pressure cooling section, carry out to come out of the stove after quenching and the cooling at described pressure cooling section.
Embodiment 4
The tunnel like charring furnace that a kind of described in the present embodiment is provided with combustion channels 10 comprises as shown in Figure 7:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track 5;
A plurality of kiln cars 4, described a plurality of kiln cars 4 are suitable for moving along described track 5; Along the travel direction of kiln car 4, described tunnel like charring furnace is provided with into kiln preparation room 18, preheating section 1, charing section 2, force cooling section 3 and kiln discharge preparation room.
Flue, described flue comprise upper flue 6 and main flue 7, and described upper flue 6 is positioned on the both sides sidewall of described tunnel type furnace body, and described main flue 7 is positioned at the top of described body of heater, and described upper flue 6 is connected with described main flue 7;
Be provided with sealing plate 8 in the both sides of described kiln car 4, sidewall in described kiln car 4 both sides is provided with sealing groove 9, described sealing plate 8 nested being arranged in the described sealing groove 9, sealing plate 8 front and back of the described a plurality of kiln cars 4 in described preheating section 1 and the charing section 2 closely are connected successively, with upper chamber and the isolation of bottom furnace chamber of described sealing plate 8; Match with described sealing groove 9 and be filled with refractory wool in the gap of sliding in the both sides of the edge of described sealing plate 8, when not filling described refractory wool, match with described sealing groove 9 gap width of slip of the both sides of the edge of described sealing plate 8 is 60mm.
The present embodiment is provided with channel of gas collection 16 at the top of described tunnel type furnace body, and described channel of gas collection 16 is connected with the furnace chamber of described tunnel type furnace body, is connected with the static decoking device with described channel of gas collection 16.Be connected with the coal gas circulation tube with the purified gas outlet of described static decoking device, described coal gas circulation tube is connected with described the first gasburner 12.
Both sides at described kiln car 4 also are provided with the lower seal plate, and described lower seal groove cavity is arranged on the below of described combustion channels 10, and the sidewall in described kiln car 4 both sides is provided with lower seal groove cavity, and described lower seal plate is nested to be arranged in the described lower seal groove cavity; Kiln car described in the present embodiment 4 also comprises two vertical seal plates that arrange perpendicular to described kiln car 4 bottom surfaces, two described vertical seal plates be separately positioned on two described tracks 5 close described sidewall the outside and parallel with described track 5, in two lower sidewall of described tunnel furnace charring furnace or be provided with the sand seal groove of opening upwards near corresponding described vertical seal plate on the bottom surface of sidewall, described vertical seal plate extends downward in the described sand seal groove.
Be provided with combustion channels 10 at each described kiln car 4, described combustion channels 10 runs through described kiln car 4 and arranges, the both ends open of described combustion channels 10 arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels 10 is heat-conducting layer, and the charing raw material is placed on the described heat-conducting layer; Be provided with a combustion channels 10 on each kiln car 4, the spacing that the described combustion channels on per two adjacent kiln cars 4 is 10 is 1cm.
Also be provided with negative pressure settling chamber 11, be provided with the first gasburner 12 and high pressure oxygen-adding tube 13 in the described negative pressure settling chamber 11, the both ends open of each described combustion channels 10 is connected with described negative pressure settling chamber 11 and described upper flue 6 respectively, and described high pressure oxygen-adding tube 13 is towards described blast tube setting; The furnace chamber that described tunnel type furnace body is positioned at described sealing groove 9 tops is connected with described flue, and the oxygen rates of ejection is 12m/s in the described high pressure oxygen-adding tube 13.
Tunnel like charring furnace described in the present embodiment is communicated with each described air outlet and is provided with branch flue 14, and described air outlet is connected with described upper flue 6 by described branch flue 14; Be provided with oxygenation port at described upper flue 6 and described branch flue 14, in described upper flue 6, be provided with the second gasburner 12.
Sidewall at described tunnel type furnace body is provided with gas flue 15, and described gas flue 15 is communicated with furnace chamber and the described negative pressure settling chamber 11 of described sealing groove 9 tops.
Tunnel like charring furnace described in the present embodiment is provided with isolating door 17 between described charing section 2 and described pressure cooling section; Be provided with towing mechanism, described towing mechanism is suitable for the kiln car 4 by described isolating door 17 being separated with the kiln car 4 of back and drawing to described pressure cooling section.Force cooling section to adopt the type of cooling of dry coke quenching described in the present embodiment.
Need to prove, except the tightness system in above-described embodiment, described tightness system also can be taked other arbitrary forms, as can with as described in sealing plate be arranged on as described on the sidewall, and sealing groove is set in the both sides of described kiln car, then described sealing plate is set is nested in the described sealing groove, as long as can realize that tightness system upper chamber and bottom furnace chamber are isolated.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are in the protection domain of the invention.
Claims (11)
1. tunnel like charring furnace that is provided with combustion channels comprises:
Tunnel type furnace body, the ground in described tunnel type furnace body is provided with track;
A plurality of kiln cars, described kiln car are suitable for along described rail moving;
Flue;
It is characterized in that, in described tunnel type furnace body, between the both sides of described a plurality of kiln cars and described tunnel type furnace body both sides sidewall, be provided with tightness system, described tightness system is suitable for the upper chamber and the bottom furnace chamber isolation that is positioned at its below with the side of being located thereon, and wherein said upper chamber is connected with described flue;
Be provided with combustion channels at each described kiln car, described combustion channels is arranged on the below of described tightness system, the both ends open of described combustion channels arranges towards the both sides of described tunnel type furnace body sidewall respectively, the roof of described combustion channels is heat-conducting layer, and the charing raw material is placed on described heat-conducting layer upper surface;
Any side or both sides sidewall at described tunnel type furnace body are provided with the first gasburner and high pressure oxygen-adding tube, one end opening of each described combustion channels is connected with described the first gasburner and high pressure oxygen-adding tube, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.
2. the tunnel like charring furnace that is provided with combustion channels according to claim 1, it is characterized in that, any side or both sides sidewall at described tunnel type furnace body are provided with the negative pressure settling chamber, described the first gasburner and high pressure oxygen-adding tube are arranged in the described negative pressure settling chamber, one end opening of each described combustion channels is connected with described negative pressure settling chamber, described high pressure oxygen-adding tube is towards described combustion channels setting, and the other end opening of described combustion channels is connected with described flue.
3. the tunnel like charring furnace that is provided with combustion channels according to claim 1 and 2, it is characterized in that, described flue comprises upper flue and main flue, described upper flue is connected with described main flue, described main flue is positioned at the outside of described body of heater, described upper flue is arranged in the sidewall of described tunnel type furnace body both sides, and an end opening of each described combustion channels is connected with described negative pressure settling chamber, and the other end opening of described combustion channels is connected with described upper flue;
Described upper chamber is connected with described main flue.
4. the tunnel like charring furnace that is provided with combustion channels according to claim 3, it is characterized in that, described negative pressure settling chamber is arranged in the both sides sidewall of described tunnel type furnace body, and in per two adjacent described combustion channelies, the flow direction of combustion gases is opposite.
5. according to claim 1 and 2 or the 4 described tunnel like charring furnaces that are provided with combustion channels, it is characterized in that, described tightness system comprises:
Be connected the sealing plate that arranges with described kiln car both sides sidewall;
At the sealing groove that described tunnel type furnace body both sides sidewall arranges, described sealing plate is nested to be arranged in the described sealing groove, closely is connected successively before and after the sealing plate of the described a plurality of kiln cars in the described charing section, with described upper chamber and the isolation of bottom furnace chamber.
6. according to claim 1 and 2 or the 4 described tunnel like charring furnaces that are provided with combustion channels, it is characterized in that, be provided with a plurality of combustion channelies on each kiln car, the spacing between per two adjacent described combustion channelies is less than or equal to 30cm.
7. according to claim 1 and 2 or the 4 described tunnel like charring furnaces that are provided with combustion channels, it is characterized in that, the gas velocity that sprays in the described high pressure oxygen-adding tube is 6-15m/s.
8. arbitrary described tunnel like charring furnace that is provided with combustion channels is characterized in that according to claim 1-7, is provided with gas flue at the sidewall of described tunnel type furnace body, and described gas flue is communicated with described upper chamber and described negative pressure settling chamber.
9. arbitrary described tunnel like charring furnace that is provided with combustion channels according to claim 1-8, it is characterized in that, be communicated with the upper chamber of described tunnel type furnace body and be provided with the static decoking device, the purified gas outlet of described static decoking device is connected with described the first gasburner.
10. arbitrary described tunnel like charring furnace that is provided with combustion channels is characterized in that according to claim 1-9, also is provided with the second gasburner in described upper flue.
11. arbitrary described tunnel like charring furnace that is provided with combustion channels is characterized in that according to claim 1-10, also is provided with: isolating door, described isolating door are arranged between described charing section and the described pressure cooling section;
Towing mechanism, described towing mechanism are suitable for the kiln car by described isolating door being separated with the kiln car of back and drawing to described pressure cooling section.
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| CN105690529A (en) * | 2016-02-17 | 2016-06-22 | 江苏肯帝亚木业有限公司 | Surface color treatment process for solid wood composite floor through carbonizing |
| CN113154891A (en) * | 2021-05-11 | 2021-07-23 | 凤台县天宝建材有限责任公司 | Reciprocating movable efficient energy-saving tunnel kiln |
| CN113280639A (en) * | 2021-05-11 | 2021-08-20 | 凤台县天宝建材有限责任公司 | Fixed efficient energy-saving tunnel kiln |
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| CN102863972B (en) | 2017-05-03 |
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