CN111908811A - Novel double-hearth kiln burning low-calorific-value fuel - Google Patents
Novel double-hearth kiln burning low-calorific-value fuel Download PDFInfo
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- CN111908811A CN111908811A CN202010786207.1A CN202010786207A CN111908811A CN 111908811 A CN111908811 A CN 111908811A CN 202010786207 A CN202010786207 A CN 202010786207A CN 111908811 A CN111908811 A CN 111908811A
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- 239000000446 fuel Substances 0.000 title claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 71
- 238000001354 calcination Methods 0.000 claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 238000005338 heat storage Methods 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 239000002737 fuel gas Substances 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims 5
- 238000000605 extraction Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 10
- 238000010924 continuous production Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 12
- 235000011941 Tilia x europaea Nutrition 0.000 description 12
- 239000004571 lime Substances 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The invention discloses a novel double-hearth kiln burning low-calorific-value fuel, which comprises a feeding device, a first kiln body and a second kiln body, wherein the feeding device is respectively connected with the first kiln body and the second kiln body; the first kiln body comprises a first preheating device, a first calcining device, a first cooling device and a first discharging device from top to bottom; the second kiln body comprises a second preheating device, a second calcining device, a second cooling device and a second discharging device from top to bottom; the first kiln body and the second kiln body are connected through a fixed connecting device. According to the novel double-hearth kiln for burning the low-heat-value fuel, the burning temperature of the low-heat-value fuel can be improved through the branch pipe, the main pipe, the combustion chamber and the heat storage box, and the calcining effect is optimized; the cooling device can realize effective conversion and recovery of material heat, so that the energy consumption is further reduced; the double-chamber kiln can realize the mutual switching between the two kiln bodies, and the continuous production of materials is finished; and the feeding device can lead the double-chamber kiln to be convenient to feed, and the labor intensity of workers is reduced.
Description
Technical Field
The invention relates to the technical field of industrial kilns, in particular to a novel double-hearth kiln burning low-calorific-value fuel.
Background
The process of calcining and decomposing the limestone raw material into a lime finished product needs to pass through a material storage belt, a preheating belt, a calcining belt and a cooling belt in a kiln. Most of the traditional industrial kilns are single-hearth kilns, and the following problems often exist in the using process:
on one hand, the double-hearth kilns in the market at present are standard double-hearth kilns, the standard double-hearth kilns can reach design indexes and produce qualified products only by adopting high-calorific-value fuel, the high-calorific-value fuel refers to fuel with the calorific value of more than 1600kcal, such as pulverized coal, natural gas, coke oven gas, mixed gas (more than 1600kcal) and the like, but some enterprises do not have the fuel of the types and only have low-calorific-value fuel, such as: (1) blast furnace gas with a calorific value of 600-900 kcal; (2) or converter gas with the heat value ranging from 900 to 1600 kcal; (3) or the high converter mixed gas has a heat value range of 900-1600. If the standard kiln type adopts blast furnace gas or converter gas with low calorific value as fuel, the yield and the product quality are greatly reduced. The use of low calorific value fuels limits the use of double-hearth kilns.
On the other hand, the existing single-hearth kiln cannot effectively convert and recover heat in the material in the cooling process, so that the energy utilization rate is low, and the production cost is increased; the existing single-hearth kiln often directly discharges high-heat flue gas generated in the calcining process, and the single-hearth kiln cannot realize continuous production of materials, so that the production efficiency is reduced; the existing single-hearth kiln or double-hearth kiln is often inconvenient in the process of calcining and blanking, so that the labor intensity of workers is increased, and the labor burden is increased.
Disclosure of Invention
The invention mainly aims to provide a novel double-hearth kiln burning low-calorific-value fuel, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a novel double-hearth kiln burning low-calorific-value fuel comprises a feeding device, a first kiln body and a second kiln body, wherein the feeding device is respectively connected with the first kiln body and the second kiln body; the first kiln body comprises a first preheating device, a first calcining device, a first cooling device and a first discharging device from top to bottom; the second kiln body comprises a second preheating device, a second calcining device, a second cooling device and a second discharging device from top to bottom; the first kiln body and the second kiln body are connected through a fixed connecting device.
As an improvement, the feeding device is a movable feeding device and comprises a movable feeding device and a movable feeding device II, the movable feeding device I is connected with the kiln body I, and the movable feeding device II is connected with the kiln body II.
Furthermore, the invention adopts another optimized technical scheme that:
a novel double-hearth kiln burning low-calorific-value fuel comprises a kiln body I and a kiln body II, wherein the kiln body I is positioned on the left side of the kiln body II, the lower part of the right end of the kiln body I and the lower part of the left end of the kiln body II are fixedly connected with a connecting device together, a feeding device is fixedly mounted in the middle of the upper end of the kiln body I and in the middle of the upper end of the kiln body II, the kiln body I comprises a preheating piece, a calcining piece I, a cooling piece I and a discharging piece II, the preheating piece I is positioned on the upper end of the calcining piece I, the calcining piece I is positioned on the upper end of the cooling piece I, the cooling piece I is positioned on the upper end of the discharging piece II, the kiln body I comprises a preheating piece II, a calcining piece II, a cooling piece II and a discharging piece I, the preheating piece II is positioned on the upper end of the calcining piece II, the second calcining piece II is positioned on the upper end of the cooling piece II, and the cooling piece II is positioned on the upper end of the discharging piece, calcination a right-hand member upper portion and the common fixedly connected with preheating device in the second calcination left end upper portion, preheating device is located the connecting device top, the common fixed mounting of a cooling piece right-hand member and the second cooling piece left end has cooling device, cooling device about both ends run through a cooling piece middle part and No. two cooling piece middle parts respectively and with preheating device left end lower part and right-hand member lower part fixed connection, No. two kiln body front end middle parts fixed mounting have control panel.
Preferably, the preheating device comprises a heat storage box, the upper end of the heat storage box is respectively and fixedly provided with a fuel feeding pipe and a combustion air feeding pipe, nozzles are fixedly arranged at the left end and the right end of the heat storage box respectively, a spray pipe is fixedly arranged on one side, far away from the heat storage box, of each nozzle, and a preheating mechanism is fixedly connected to the middle of the lower end of the heat storage box.
Preferably, preheat the mechanism and include the combustion chamber, the equal fixedly connected with house steward in both ends about the combustion chamber, the equal fixed mounting in house steward upper end has the branch pipe, equal fixed mounting in branch pipe right-hand member upper portion, spray tube upper end, fuel filling tube right-hand member and combustion-supporting air filling tube right-hand member has a valve No. one.
Preferably, combustion air and fuel gas are respectively arranged in the branch pipes, one side of the main pipe, which is far away from the combustion chamber, is fixedly connected with the left part of the preheating device and the right part of the preheating device respectively, and one side of the spray pipe, which is far away from the heat storage box, is fixedly connected with the upper part of the right end of the first calcining part and the upper part of the left end of the second calcining part respectively.
Preferably, cooling device includes the forced draught blower, the equal fixedly connected with tuber pipe of forced draught blower output, the equal fixedly connected with heat transfer frame in one side that the forced draught blower was kept away from to a tuber pipe, the equal fixedly connected with tuber pipe of one end that the tuber pipe was kept away from to the heat transfer frame, and equal fixed mounting has the pump of drawing air on No. two tuber pipes, No. two valves of equal fixed mounting in tuber pipe upper end and No. two tuber pipes upper ends.
Preferably, No. two tuber pipes are kept away from one side of heat transfer frame all with preheating device lower part fixed connection, one side that the forced draught blower was kept away from to a tuber pipe runs through No. two cooling part left end walls of a cooling part right end wall respectively, the heat transfer frame is wave type coil pipe structure, and heat transfer frame lateral wall respectively with a cooling part inner wall and No. two cooling part inner wall fixed connection.
Preferably, feeding device includes a storage section of thick bamboo, storage section of thick bamboo upper end right part fixed mounting has the inlet pipe, the equal fixed mounting of storage section of thick bamboo lower extreme has the conveyer pipe, the equal fixed mounting in conveyer pipe upper portion has No. three valves, the conveyer pipe lower extreme respectively with kiln body upper end middle part and No. two kiln body upper end middle part fixed connection, and the equal slope of conveyer pipe is installed.
Preferably, connecting device is including connecting the body, the inside fixed mounting of connecting the body has two horizontal distribution's baffle, and two baffle surfaces enclose into a passageway, No. two passageways and No. three passageways with connecting the body inner wall jointly, a passageway is located No. two passageways tops, and No. two passageways are located No. three passageways tops, connecting body upper end and the equal movable mounting of connecting body lower extreme have the governing valve, and the governing valve inboard runs through a passageway inside and No. three passageways respectively inside.
Preferably, control panel includes the base plate, base plate front end fixed mounting respectively has three temperature display screen and a plurality of control knob, the base plate is located two numbers and calcines a front end middle part, preheat inside, one number inside, the cooling part of one number inside, two numbers inside preheating part, two numbers inside and two numbers inside equal fixed mounting of cooling part have temperature sensor and temperature sensor all with control panel electric connection one number.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the branch pipes, the main pipe, the combustion chamber and the heat storage box are arranged together, so that low-heat-value fuel and combustion air in the fuel feeding pipe and the combustion air feeding pipe can be preheated, the combustion temperature of the low-heat-value fuel subjected to preheating treatment is increased, high-heat-value coal powder or coke powder or high-heat-value gas fuel is not required to be added, the calcination effect is optimized, and the calcination quality is improved.
2. In the invention, when the cold air after heat exchange is converted into hot air, the hot air is introduced into the main pipe of the preheating device under the action of the air draft pump to preheat combustion air and fuel gas, thereby realizing effective conversion and recovery of material heat and further reducing energy consumption and production cost.
3. According to the invention, high-temperature flue gas generated in the calcining process of lime in the first calcining part is introduced into the second kiln body after three passages in the connecting pipe body and the regulating valve are arranged in a matched manner, and the flue gas introduced into the second kiln body can preheat and predefine the lime in the second kiln body, so that the high-heat flue gas generated in the calcining process is prevented from being directly discharged, and the double-chamber kiln can realize the mutual switching between the two kiln bodies, thus the continuous production of materials is completed, and the production efficiency is improved.
4. According to the double-chamber kiln, the conveying pipe which is arranged at the lower end of the storage cylinder and leads to the double-chamber kilns can convey materials to the two chamber kilns, so that the two kiln bodies are prevented from being subjected to blanking operation when being alternately used by workers, convenience in blanking is realized, and the blanking labor intensity of the workers is reduced.
Drawings
FIG. 1 is an overall structural view of a novel dual-chamber kiln burning a low-calorific-value fuel according to example 1 of the present invention;
FIG. 2 is an overall structural view of a novel dual-chamber kiln burning low-calorific-value fuel according to example 2 of the present invention;
FIG. 3 is a schematic structural view of a preheating device of a novel dual-chamber kiln burning low-calorific-value fuel according to embodiment 2 of the present invention;
FIG. 4 is a schematic structural view of a cooling apparatus of a novel dual-chamber kiln burning low-calorific-value fuel according to example 2 of the present invention;
FIG. 5 is a schematic structural view of a charging device of a novel dual-chamber kiln burning low-calorific-value fuel according to example 2 of the present invention;
FIG. 6 is a schematic view showing the internal structure of a connecting device of a novel dual-chamber kiln for burning low-calorific-value fuel according to example 2 of the present invention;
fig. 7 is a schematic structural diagram of a control panel of a novel dual-chamber kiln burning low-heating-value fuel according to embodiment 2 of the invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in figure 1, the novel double-hearth kiln burning low-calorific-value fuel comprises a feeding device, a first kiln body and a second kiln body, wherein the feeding device is respectively connected with the first kiln body and the second kiln body; the first kiln body comprises a first preheating device, a first calcining device, a first cooling device and a first discharging device from top to bottom; the second kiln body comprises a second preheating device, a second calcining device, a second cooling device and a second discharging device from top to bottom; the first kiln body and the second kiln body are connected through a fixed connecting device; the feeding device is a movable feeding device and comprises a movable feeding device and a movable feeding device, the movable feeding device is connected with the kiln body I, and the movable feeding device is connected with the kiln body II.
Example 2
As shown in figures 2-7, a novel double-chamber kiln burning low-calorific-value fuel comprises a first kiln body 1 and a second kiln body 2, wherein the first kiln body 1 is positioned at the left side of the second kiln body 2, the lower part of the right end of the first kiln body 1 and the lower part of the left end of the second kiln body 2 are fixedly connected with a connecting device 3 together, a feeding device 6 is fixedly arranged at the middle part of the upper end of the first kiln body 1 and the middle part of the upper end of the second kiln body 2 together, the first kiln body 1 comprises a first preheating piece 8, a first calcining piece 9, a first cooling piece 10 and a second discharging piece 15, the first preheating piece 8 is positioned at the upper end of the first calcining piece 9, the first calcining piece 9 is positioned at the upper end of the first cooling piece 10, the first cooling piece 10 is positioned at the upper end of the second discharging piece 15, the first kiln body 1 comprises a second preheating piece 11, a second calcining piece 12, a second cooling piece 13 and a first discharging piece 14, the second preheating piece 11 is positioned at the upper end of the second calcining piece 12, no. two calcination piece 12 is located No. two cooling part 13 upper ends, and No. two cooling part 13 is located a play work piece 14 upper ends, a calcination 9 right-hand member upper portion and No. two calcination 12 left ends upper portions common fixedly connected with preheating device 5, preheating device 5 is located connecting device 3 top, a cooling part 10 right-hand member and No. two cooling part 13 left ends common fixed mounting have cooling device 4, both ends run through a cooling part 10 middle part and No. two cooling part 13 middle parts respectively about cooling device 4 and with preheating device 5 left end lower part and right-hand member lower part fixed connection, No. two kiln body 2 front end middle parts fixed mounting has control panel 7.
In order to improve the combustion temperature of the low-calorific-value fuel, the preheating device 5 comprises a heat storage box 51, the upper end of the heat storage box 51 is respectively and fixedly provided with a fuel feeding pipe 52 and a combustion air feeding pipe 53, the left end and the right end of the heat storage box 51 are respectively and fixedly provided with a nozzle 54, one side of each nozzle 54 far away from the heat storage box 51 is respectively and fixedly provided with a spray pipe 55, and the middle part of the lower end of the heat storage box 51 is fixedly connected with a preheating; in order to make full use of low-calorific-value fuel resources, the preheating mechanism 56 comprises a combustion chamber 561, the left end and the right end of the combustion chamber 561 are fixedly connected with a main pipe 562, the upper end of the main pipe 562 is fixedly provided with a branch pipe 563, and the upper parts of the right ends of the branch pipes 563, the upper end of the spray pipe 55, the right end of the fuel feeding pipe 52 and the right end of the combustion air feeding pipe 53 are fixedly provided with a first valve 16; combustion-supporting air and fuel gas are respectively arranged in the branch pipes 563, one side of the main pipe 562, which is far away from the combustion chamber 561, is fixedly connected with the left part of the preheating device 5 and the right part of the preheating device 5 respectively, and one side of the spray pipe 55, which is far away from the heat storage tank 51, is fixedly connected with the upper part of the right end of the first calcining part 9 and the upper part of the left end of the second calcining part 12 respectively; the cooling device 4 comprises a blower 41, wherein the output end of the blower 41 is fixedly connected with a first air pipe 42, one side, away from the blower 41, of the first air pipe 42 is fixedly connected with a heat exchange frame 43, one end, away from the first air pipe 42, of the heat exchange frame 43 is fixedly connected with a second air pipe 44, an air suction pump 45 is fixedly arranged on the second air pipe 44, and a second valve 46 is fixedly arranged at the upper end of the first air pipe 42 and the upper end of the second air pipe 44; one side of the second air pipe 44, which is far away from the heat exchange frame 43, is fixedly connected with the lower part of the preheating device 5, one side of the first air pipe 42, which is far away from the blower 41, penetrates through the right end wall of the first cooling part 10 and the left end wall of the second cooling part 13 respectively, the heat exchange frame 43 is of a wave-shaped coil structure, the side wall of the heat exchange frame 43 is fixedly connected with the inner wall of the first cooling part 10 and the inner wall of the second cooling part 13 respectively, and cold air after heat exchange is converted into hot air and is introduced into the main pipe 562 of the preheating device 5 under the action of the air suction pump 45, so that the preheating of combustion-supporting air and fuel gas is realized; in order to facilitate charging, the charging device 6 comprises a storage cylinder 62, a charging pipe 61 is fixedly arranged at the right part of the upper end of the storage cylinder 62, conveying pipes 63 are fixedly arranged at the lower ends of the storage cylinder 62, a third valve 64 is fixedly arranged at the upper parts of the conveying pipes 63, the lower ends of the conveying pipes 63 are fixedly connected with the middle part of the upper end of the first kiln body 1 and the middle part of the upper end of the second kiln body 2 respectively, and the conveying pipes 63 are obliquely arranged; in order to adjust the flue gas flow in the connecting pipe body 31, the connecting device 3 comprises a connecting pipe body 31, two partition plates 32 which are horizontally distributed are fixedly installed in the connecting pipe body 31, the outer surfaces of the two partition plates 32 and the inner wall of the connecting pipe body 31 jointly enclose a first channel 33, a second channel 34 and a third channel 35, the first channel 33 is located above the second channel 34, the second channel 34 is located above the third channel 35, the upper end of the connecting pipe body 31 and the lower end of the connecting pipe body 31 are both movably provided with regulating valves 36, and the inner sides of the regulating valves 36 respectively penetrate through the interior of the first channel 33 and the interior of the third channel 35; for the smooth proceeding of the calcination process, the control panel 7 comprises a substrate 72, the front end of the substrate 72 is respectively and fixedly provided with three temperature display screens 71 and a plurality of control knobs 73, the substrate 72 is positioned in the middle of the front end of the second calcination part 12, the first preheating part 8 is arranged inside, the first calcination part 9 is arranged inside, the first cooling part 10 is arranged inside, the second preheating part 11 is arranged inside, the second calcination part 12 is arranged inside, and the second cooling part 13 is arranged inside and fixedly provided with temperature sensors which are all electrically connected with the control panel 7.
It should be noted that, the invention is a novel double-hearth kiln burning low-calorific-value fuel, when lime needs to be calcined, lime is stored and stored in the storage cylinder 62, the control knob 73 on the control panel 7 is electrically connected with the first valve 16, the second valve 46, the third valve 64 and the regulating valve 36 respectively, so that the third valve 64 on the left end conveying pipe 63 can be opened by regulating the control knob 73, at the moment, lime raw material is conveyed from the conveying pipe 63 to the inside of the first kiln body 1, the branch pipe 563, the fuel feeding pipe 52, the combustion air feeding pipe 53 and the third valve 64 leading to the first calcining part 9 are all opened, the third valve 64 leading to the second calcining part 12 is closed, at the moment, a worker conveys combustion air and fuel gas to the inside of the combustion chamber 561 through the branch pipe 563, and high-temperature flue gas generated by the combustion of the combustion chamber 561 is introduced into the heat storage tank 51 for heat storage operation, low-calorific-value fuel and combustion-supporting air are respectively fed into a heat storage box 51 through a fuel feeding pipe 52 and a combustion-supporting air feeding pipe 53 to be preheated, the preheated air and fuel enter a nozzle 54 to be combusted and then are conveyed into a first calcining part 9 through a spray pipe 55, so that lime calcining operation is realized, the calcined lime enters a cooling part, at the moment, a second valve 46 is opened, air supply operation is performed on the inside of a heat exchange frame 43 through an air feeder 41, the heat exchange frame 43 in the first cooling part 10 performs heat exchange operation on the calcined high-temperature limestone, and cold air after heat exchange is converted into hot air and is fed into a header pipe 562 of a preheating device 5 under the action of an air suction pump 45, so that preheating of the combustion-supporting air and the fuel gas is realized, and energy consumption and production cost are further reduced; because the internal pressure of the first calcined kiln body 1 is always higher than the pressure of the second non-calcined kiln body 2, high-temperature flue gas generated in the calcining process of lime in the first calcining part 9 is introduced into the second kiln body 2 through the connecting pipe body 31, and the three channels and the regulating valve 36 are matched to ensure smooth circulation of the flue gas and regulate the flow of the flue gas in the connecting pipe body 31; and the flue gas that lets in No. 2 kiln bodies can preheat and predecomposition the lime in No. 2 kiln bodies, and the lime finished product that calcines is discharged from No. two play work or material 15, then lets in the lime raw materials of waiting to fire in No. 2 kiln bodies, so accomplishes a circulation, through the switching each other between two kiln bodies, accomplishes the continuous production of material, improves production efficiency.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (11)
1. A novel double-hearth kiln burning low-calorific-value fuel is characterized in that: the kiln comprises a feeding device, a first kiln body (300) and a second kiln body (400), wherein the feeding device is respectively connected with the first kiln body (300) and the second kiln body (400); the first kiln body (300) comprises a first preheating device (500), a first calcining device (700), a first cooling device (1000) and a first discharging device (1200) from top to bottom; the second kiln body (400) comprises a second preheating device (600), a second calcining device (800), a second cooling device (1100) and a second discharging device (1300) from top to bottom; the first kiln body (300) and the second kiln body (400) are connected through a fixed connecting device (900).
2. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: the feeding device is a movable feeding device and comprises a movable feeding device (100) and a movable feeding device (200) II, the movable feeding device (100) is connected with a kiln body (300), and the movable feeding device (200) is connected with a kiln body (400).
3. The utility model provides a novel double-chamber kiln of burning low calorific value fuel, includes a kiln body (1) and No. two kiln bodies (2), its characterized in that: the first kiln body (1) is positioned at the left side of the second kiln body (2), the lower part of the right end of the first kiln body (1) and the lower part of the left end of the second kiln body (2) are fixedly connected with a connecting device (3) together, the middle part of the upper end of the first kiln body (1) and the middle part of the upper end of the second kiln body (2) are fixedly provided with a feeding device (6) together, the first kiln body (1) comprises a first preheating piece (8), a first calcining piece (9), a first cooling piece (10) and a second discharging piece (15), the first preheating piece (8) is positioned at the upper end of the first calcining piece (9), the first calcining piece (9) is positioned at the upper end of the first cooling piece (10), the first cooling piece (10) is positioned at the upper end of the second discharging piece (15), the second kiln body (2) comprises a second preheating piece (11), a second calcining piece (12), a second cooling piece (13) and a first discharging piece (14), the second preheating part (11) is positioned at the upper end of the second calcining part (12), the second calcining part (12) is positioned at the upper end of the second cooling part (13), and the second cooling part (13) is positioned at the upper end of the first discharging part (14), the upper part of the right end of the first calcining part (9) and the upper part of the left end of the second calcining part (12) are fixedly connected with a preheating device (5) together, the preheating device (5) is positioned above the connecting device (3), the cooling device (4) is fixedly arranged at the right end of the second cooling part (10) and the left end of the second cooling part (13) together, the left end and the right end of the cooling device (4) respectively penetrate through the middle part of the first cooling part (10) and the middle part of the second cooling part (13) and are fixedly connected with the lower part of the left end and the lower part of the right end of the preheating device (5), and a control panel (7) is fixedly arranged in the middle of the front end of the second kiln body (2).
4. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: preheating device (5) are including heat accumulation case (51), heat accumulation case (51) upper end difference fixed mounting has fuel filling pipe (52) and combustion air filling pipe (53), the equal fixed mounting in both ends has nozzle (54) about heat accumulation case (51), the equal fixed mounting in one side that heat accumulation case (51) were kept away from in nozzle (54) has spray tube (55), heat accumulation case (51) lower extreme middle part fixedly connected with preheats mechanism (56).
5. The novel dual-chamber kiln burning low heating value fuel according to claim 2, characterized in that: preheating mechanism (56) include combustion chamber (561), the equal fixedly connected with house steward (562) in both ends about combustion chamber (561), the equal fixed mounting in house steward (562) upper end has branch pipe (563), branch pipe (563) right-hand member upper portion, spray tube (55) upper end, fuel filling pipe (52) right-hand member and combustion-supporting air filling pipe (53) right-hand member all fixed mounting have a valve (16).
6. The novel dual-chamber kiln burning low heating value fuel according to claim 3, wherein: combustion-supporting air and fuel gas are respectively arranged in the branch pipes (563), one side of the main pipe (562) far away from the combustion chamber (561) is fixedly connected with the left part of the preheating device (5) and the right part of the preheating device (5), and one side of the spray pipe (55) far away from the heat storage box (51) is fixedly connected with the upper part of the right end of the first calcining part (9) and the upper part of the left end of the second calcining part (12).
7. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: cooling device (4) are including forced draught blower (41), tuber pipe (42) of equal fixedly connected with of forced draught blower (41) output, the equal fixedly connected with heat transfer frame (43) in one side of forced draught blower (41) is kept away from in tuber pipe (42), No. two tuber pipes (44) of the equal fixedly connected with of one end of tuber pipe (42) are kept away from in heat transfer frame (43), and equal fixed mounting has air extraction pump (45) on No. two tuber pipes (44), No. two valve (46) of equal fixed mounting in tuber pipe (42) upper end and No. two tuber pipes (44) upper end.
8. The novel dual-chamber kiln burning low heating value fuel according to claim 5, wherein: no. two tuber pipes (44) keep away from one side of heat transfer frame (43) all with preheating device (5) lower part fixed connection, one side that forced draught blower (41) were kept away from in tuber pipe (42) runs through No. two cooling part (13) left end walls of cooling part (10) right side wall respectively, heat transfer frame (43) are wave type coil pipe structure, and heat transfer frame (43) lateral wall respectively with a cooling part (10) inner wall and No. two cooling part (13) inner wall fixed connection.
9. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: feeding device (6) are including a storage section of thick bamboo (62), a storage section of thick bamboo (62) upper end right part fixed mounting has inlet pipe (61), the equal fixed mounting of a storage section of thick bamboo (62) lower extreme has conveyer pipe (63), the equal fixed mounting in conveyer pipe (63) upper portion has No. three valves (64), conveyer pipe (63) lower extreme respectively with a kiln body (1) upper end middle part and No. two kiln body (2) upper end middle part fixed connection, and the installation of all inclining of conveyer pipe (63).
10. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: connecting device (3) are including connecting body (31), connecting body (31) inside fixed mounting has two horizontal distribution's baffle (32), and just two baffle (32) surfaces enclose into a passageway (33), No. two passageway (34) and No. three passageway (35) jointly with connecting body (31) inner wall, a passageway (33) is located No. two passageway (34) tops, and No. two passageway (34) are located No. three passageway (35) tops, connecting body (31) upper end and the equal movable mounting of connecting body (31) lower extreme have governing valve (36), and governing valve (36) inboard runs through a passageway (33) inside and No. three passageway (35) inside respectively.
11. The novel dual-chamber kiln burning low heating value fuel according to claim 1, wherein: control panel (7) include base plate (72), base plate (72) front end fixed mounting respectively has three temperature display screen (71) and a plurality of control knob (73), base plate (72) are located two numbers and calcine piece (12) front end middle part, preheat a (8) inside, one number and calcine piece (9) inside, a cooling part (10) inside, two numbers preheat piece (11) inside, two numbers calcine piece (12) inside and two numbers cooling part (13) inside equal fixed mounting have temperature sensor and temperature sensor all with control panel (7) electric connection.
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| CN114105499A (en) * | 2021-11-21 | 2022-03-01 | 石家庄新华能源环保科技股份有限公司 | Self-heat-storage double-chamber kiln |
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| CN111908811B (en) | 2022-03-25 |
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