LU101482B1 - Treatment device and method for microwave desulfurization of coal - Google Patents
Treatment device and method for microwave desulfurization of coal Download PDFInfo
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- LU101482B1 LU101482B1 LU101482A LU101482A LU101482B1 LU 101482 B1 LU101482 B1 LU 101482B1 LU 101482 A LU101482 A LU 101482A LU 101482 A LU101482 A LU 101482A LU 101482 B1 LU101482 B1 LU 101482B1
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- B01J19/122—Incoherent waves
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
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- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
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Abstract
The present invention relates to the technical field of coal desulfurization, and discloses a treatment device and method for microwave desulfurization of coal. The treatment device includes a plurality of heat exchange mechanisms with the same structure, the heat exchange mechanism includes a shell, a heat exchange cavity is disposed in the shell, a first air inlet pipe is disposed in the heat exchange cavity, a side wall of the first air inlet pipe is provided with a vent hole, a second air inlet pipe is sleeved at an outer side surface of the first air inlet pipe and located in the heat exchange cavity, and both ends of the second air inlet pipe extend out of the top and the bottom of the shell respectively; an attachment mechanism sleeving an outer side of the second air inlet pipe is disposed in the heat exchange cavity, and an air outlet pipe extending out of the shell is disposed above the heat exchange cavity and located between the attachment mechanisms; a first connecting pipe is connected between the air outlet pipe located between adjacent heat exchange mechanisms and the first air inlet pipe through a connecting mechanism, and a second connecting pipe is connected between the second air inlet pipe located below the shell and the adjacent second air inlet pipe located above the shell through a connecting mechanism. Through the above structure, the treatment device can better exchange heat with high-temperature sulfur vapor.
Description
TREATMENT DEVICE AND METHOD FOR MICROWAVE DESULFURIZATION OF COAL LU101482
[0001] The present invention relates to the technical field of coal desulphurization, and in particular, to a treatment device and method for microwave desulfurization of coal.
[0002] China's coal resources are abundant, and the average sulfur content in coal is 1.72%, in which high-sulfur coal (S content > 2.0%, including high sulfur coal and medium sulfur coal) has proved reserves accounting for about 1/3 of the total reserves of coal, accounting for
16.67% of raw coal produced, which has great potential application value.
[0003] There are huge sulfur resources in high-sulfur coal. In 2016, China's raw coal output totaled 33.64 tons. According to the S content of coal, which is 2.0%, the high-sulfur coal contains 11.21 million tons of S. In 2016, China's sulfur output was only 5.16 million tons while imported sulfur was 11.961 million tons, and the external dependence was more than 50%. However, the use and sulfur recovery level of high-sulfur coal in China is low, and the amount of sulfur recovered from coal is very small. In addition, the direct burning of high-sulfur coal without any treatment causes a large amount of SO; emissions, causing serious pollution to the environment. Therefore, it is urgent to develop an economically viable technology and method for high-sulfur coal desulfurization and sulfur resource recovery.
[0004] The use of microwave for desulfurization is a novel method for desulfurization of high-sulfur coal in recent years. The microwave is an electromagnetic wave with a frequency of
0.3-300 GHz and a wavelength of 1 mm-100 cm. Inorganic sulfur such as pyrite in coal is decomposed under microwave, mainly releasing H2S. HzS and a small amount of SO, generate elemental sulfur on the surface of the coal, and the pyrite is converted to magnetic pyrite under the action of high temperature. This method can remove about 50% of the sulfur in coal.
[0005] The patent with the Application No. CN201710424225.3 discloses a system and method for desulfurizing coal and recovering elemental sulfur. The system includes a microwave desulfurization unit, and also includes a raw coal drying unit, an exhaust gas collecting unit and an elemental sulfur reaction unit. A discharging port of the raw coal drying unit is connected to a feeding port of the microwave desulfurization unit, the exhaust gas collecting unit is disposed at an air outlet of the microwave desulfurization unit, and an air inlet of the elemental sulfur reaction unit is respectively connected to an air outlet of the raw coal 1 drying unit and an air outlet of the exhaust gas collecting unit. Although the system and method can simultaneously remove and recover sulfur in coal and are suitable for desulfurization and 107482 sulfur recovery of high-sulfur coal in various coal quality, heat of high-temperature elemental sulfur vapor generated by the elemental sulfur reaction unit is not recovered, and there is a defect of waste of heat.
SUMMARY In view of a certain or some deficiencies existing in the prior art, the present invention provides a heat recovery and treatment device used in coal desulfurization. In order to solve the above technical problems, the present invention is implemented by the following technical solution: a treatment device for microwave desulfurization of coal, including a plurality of heat exchange mechanisms with the same structure, where the heat exchange mechanism includes a shell, a heat exchange cavity is disposed in the shell, a first air inlet pipe extending above the shell is disposed in the heat exchange cavity, a vent hole is disposed at a side wall of the first air inlet pipe and located below the heat exchange cavity, a spiral second air inlet pipe is sleeved at an outer side surface of the first air inlet pipe and located in the heat exchange cavity, and both ends of the second air inlet pipe extend out of the top and the bottom of the shell respectively; an attachment mechanism sleeving an outer side of the second air inlet pipe is disposed in the heat exchange cavity, and an air outlet pipe extending out of the shell is disposed above the heat exchange cavity and located between the attachment mechanisms; ends of the first air inlet pipe, the second air inlet pipe and the air outlet pipe are each provided with a connecting mechanism, the connecting mechanism includes a first connecting ring, a rotating groove is disposed on an outer side wall of the first connecting ring and located at an upper end along the circumference of the first connecting ring, the outside of the first connecting ring is sleeved with a second connecting ring, and an inner side wall of the second connecting ring is provided with a rotating block matching the rotating groove; a first connecting pipe is connected between the air outlet pipe located between adjacent heat exchange mechanisms and the first air inlet pipe through a connecting mechanism, and a second connecting pipe is connected between the second air inlet pipe located below the shell and the adjacent second air inlet pipe located above the shell through a connecting mechanism. Through the above structure of the present invention, high-temperature elemental sulfur vapor enters the heat exchange cavity through the first air inlet pipe, lower-temperature H2S and SO; flue gases generated by raw coal by microwave pyrolysis enter the heat exchange cavity through the second air inlet pipe for heat exchange, so that heat of the high-temperature 2 elemental sulfur vapor is recovered; the plurality of heat exchange mechanisms are provided, so that the high-temperature elemental sulfur vapor is subjected to multiple heat exchanges, and thi" 101482 heat exchange effect is better. Through the connecting mechanism in the present invention, the mounting of the first connecting pipe and the second connecting pipe on the heat exchange mechanism is more convenient. Through the foregoing technical solution of the present invention, the heat recovery and treatment device can perform multiple heat exchanges on the high-temperature elemental sulfur vapor, so that the heat recovery effect is better. Preferably, the attachment mechanism includes two oppositely disposed semi-circular mounting plates, opposite sides of the two mounting plates are provided with mounting grooves, first guide pillars are disposed in the mounting groove and located at four corners in the left-right direction, an attachment plate is disposed in the mounting groove, the attachment plate is provided with a first through hole for the corresponding first guide pillar to pass through, and the first guide pillars is sleeved with a first spring located between the attachment plate and a side wall of the mounting groove; rotating bases are disposed on the opposite sides of the two mounting plates and located at upper and lower ends, a rotating shaft extending out of the shell is disposed between the two rotating bases, and convex blocks abutting against a side of the attachment plate are oppositely disposed on the rotating shaft.
Through the arrangement of the mounting plate, the attachment plate and the rotating shaft in the present invention, sulfur generated by the condensation of the high-temperature elemental sulfur vapor during the heat exchange in the heat exchange cavity can be attached to the attachment plate, and at the same time, the rotating shaft rotates to cause the attachment plate to vibrate in a left-right mode in the mounting groove, so that the sulfur attached to the attached plate falls to the bottom of the heat exchange cavity, thereby facilitating the later collection of the sulfur.
Preferably, a chute having a T-shaped cross section is disposed on an upper side wall of the heat exchange cavity in the left-right direction, a lower side of the shell is provided with grooves corresponding to the mounting plate, a second guide pillar is disposed in the groove in the left-right direction, and tops of the grooves are each provided with a discharging port matching a lower end face of the corresponding mounting plate; upper end faces of the mounting plates are each provided with a sliding rail sliding in the chute, a lower end face of the mounting plate is provided with an extension portion passing through the discharging port and extending into the groove, the extension portion is provided with a connecting portion located in the groove and used for sealing the discharging port, the connecting portion is provided with a second through hole for the second guide pillar to pass through, the second guide pillar is sleeved with a second spring located between the connecting portion and a side wall of the groove, the second spring is 3 used to push the mounting plates to move in opposite directions, and opposite side walls of the two grooves are each provided with a moving groove for the rotating shaft to pass through. LU101482 Through the arrangement of the groove, the discharging port, the extension portion and the connecting portion in the present invention, the discharging port is preferably blocked; through the arrangement of the second guide pillar, the second spring, the chute and the sliding rail, the second spring can automatically push the mounting plate to block the discharging port to ensure the heat exchange effect; and through the arrangement of the moving groove, the opening and closing of the discharging port can be controlled conveniently by poking the rotating shaft, which facilitates the discharge and collection of sulfur.
Preferably, a spring mounting cavity with a downward opening is disposed in the rotating shaft, limiting chutes disposed in the up-and-down direction are oppositely disposed on an inner side wall of the spring mounting cavity, a push rod extending out of the spring mounting cavity is disposed in the spring mounting cavity through a third spring, and the convex block is disposed on the push rod and extends out of the corresponding limiting chute; a positioning rod located below the connecting portion is disposed in the groove in the front-rear direction, and the positioning rod is used to abut against the push rod to control the opening or closing of the discharging port.
Through the above structure of the present invention, the push rod is pushed by the third spring to extend out of the lower end of the rotating shaft and abut against the positioning rod in the groove, so that the rotating shaft is restricted, thereby keeping the discharging port in a normally open state, which facilitates the discharge of sulfur in the heat exchange cavity; when the push rod is retracted into the spring mounting cavity and releases the abutting fit with the positioning rod, the second spring automatically pushes the mounting plate to block the discharging port; through the arrangement of the limiting chute, the convex block fixed on the push rod extends out of the limiting chute, so that the attachment plate can be driven to rotate, the push rod can be limited to prevent the push rod from sliding out of the spring mounting cavity.
Preferably, a lower side wall of the mounting groove is provided with a first inclined plane, so that the sulfur falling from the attachment plate can slide from the first inclined plane to the bottom of the heat exchange cavity better, which better prevents the sulfur from being accumulated at the bottom of the mounting groove.
Preferably, a side of the attachment plate towards the second air inlet pipe is provided with a sliding groove in the up-and-down direction, limiting clamping grooves are disposed on opposite sides of the sliding groove in the up-and-down direction, and a top end face of the sliding groove is provided with a third guide pillar in up-and-down direction; a movable plate which is movable 4 and has a lower end extending out of a lower end face of an attachment plate is disposed in the sliding groove, a side of the movable plate is provided with a slider located in the corresponding V101482 limiting clamping groove, the movable plate is provided with a third through hole for the third guide pillar to pass through, the third guide pillar is sleeved with a fourth spring located between the movable plate and a top wall of the sliding groove, and a lower end face of the movable plate is provided with a second inclined plane used to match the first inclined plane to push the movable plate to move upwards. Through the structure of the present invention, by the arrangement of the sliding groove, the limiting clamping groove, the movable plate and the slider, the slider is located in the limiting clamping groove and a lower end of the limiting clamping groove is blocked, so that the movable plate can move up and down in the sliding groove while being capable of being mounted in the sliding groove; through the arrangement of the third guide pillar, the fourth spring and the third through hole, the third guide pillar extends into the third through hole, so that the fourth spring provides an elastic force to push the movable plate to move downwards while the fourth spring is mounted; through the arrangement of the second inclined plane, when the rotating shaft rotates to drive the attachment plate to move into the mounting groove, the second inclined plane squeezes the first inclined plane, thereby causing the movable plate to move into the sliding groove; and when the attachment plate moves to an opening of the mounting groove, the fourth spring pushes the movable plate to move out of the sliding groove, so that the movable plate can vibrate up and down in the sliding groove, making the effect of falling of sulfur on the movable plate better.
Preferably, the heat exchange mechanisms are disposed on a machine frame, the machine frame includes a supporting plate, square through holes are disposed on the supporting plate at intervals, and an upper end side wall of the square through hole expands outwards to form a mounting step for mounting the shell.
Through the arrangement of the mounting step in the present invention, the heat exchange mechanism can be better mounted on the supporting plate; and through the arrangement of the square through hole, the sulfur discharged from the discharging port can drop below the supporting plate through the square through hole, which facilitates collection.
Preferably, a through groove for the second connecting pipe to pass through is disposed on the supporting plate and located between adjacent mounting steps, so that the second connecting pipe can better connect the adjacent heat exchange mechanisms, the second connecting pipe is better placed, and the heat recovery and treatment device is more attractive.
Preferably, supporting columns are disposed on a lower plate surface of the supporting plate and located at four corners, so that the supporting plate is better supported.
The present invention also provides a treatment method based on any of the foregoing 5 treatment devices for microwave desulfurization of coal, including the following steps: step 1: sequentially connecting and mounting a first connecting pipe and a second“ 01482 connecting pipe by connecting mechanisms to connect heat exchange mechanisms to each other; step 2: introducing high-temperature elemental sulfur vapor generated by a sulfur reactor into a heat exchange cavity through a first air inlet pipe, and introducing lower-temperature H,S and SO; flue gases generated by raw coal through a microwave reactor into a second air inlet pipe through an upper end of the second air inlet pipe, so that the flue gases exchange heat in the heat exchange cavity; step 3: after a period of time of heat exchange, shutting down the sulfur reactor and the microwave reactor, and poking a rotating shaft to make a push rod in the rotating shaft abut against a positioning rod in a groove, so that a discharging port in a shell is in a normally open state; and step 4: rotating the rotating shaft, so that a convex block circularly pushes an attachment plate, the attachment plate vibrates in the left-right direction, and a movable plate on the attachment plate vibrates up and down, thereby better causing sulfur attached to the attachment plate to fall for discharge from the discharging port and collection.
[0006] FIG. 1 is a schematic view of a treatment device for microwave desulfurization of coal in Embodiment 1;
[0007] FIG. 2 is a cross-sectional schematic view showing the connection of heat exchange mechanisms in Embodiment 1;
[0008] FIG. 3 is a schematic view of a shell in Embodiment 1;
[0009] FIG. 4 is a schematic view showing the connection of a mounting plate and an attachment plate in Embodiment 1;
[0010] FIG. 5 is a cross-sectional schematic view of the mounting plate and the attachment plate in Embodiment 1;
[0011] FIG. 6 is a schematic view of the mounting plate in Embodiment 1;
[0012] FIG. 7 is a schematic view the attachment plate in Embodiment 1;
[0013] FIG. 8 is a schematic view of a rotating shaft in Embodiment 1;
[0014] FIG. 9 is a schematic view of a machine frame in Embodiment 1;
[0015] FIG. 10 is a schematic view of a movable plate in Embodiment 1; and
[0016] FIG. 11 is a cross-sectional schematic view of a connecting mechanism in 6
Embodiment 1.
[0017] Names of parts indicated by numerical symbols in the accompanying drawings are as ores follows: 100. machine frame; 101. first air inlet pipe; 102. second air inlet pipe; 103. first connecting pipe; 104. second connecting pipe; 110. heat exchange mechanism; 210. shell; 211. heat exchange cavity; 220. attachment mechanism; 231. air outlet pipe; 240. connecting mechanism; 311. chute; 321. groove; 322. discharging port; 323. positioning rod; 324. moving groove; 331. second guide pillar; 332. second spring; 410. mounting plate; 411. sliding rail; 412. extension portion; 413. connecting portion; 414. second through hole; 420. attachment plate;
431. rotating base; 432. rotating shaft; 511. mounting groove; 521. first guide pillar; 522. first spring; 531. convex block; 611. first inclined plane; 711. first through hole; 721. sliding groove;
722. limiting clamping groove; 723. third guide pillar; 724. fourth spring; 730. movable plate;
811. spring mounting cavity; 812. limiting chute; 821. third spring; 822. push rod; 911. supporting plate; 912. square through hole; 913. through groove; 914. supporting column; 921. mounting step; 1011. slider; 1012. third through hole; 1013. second inclined plane; 1110. first connecting ring; 1111. rotating groove; 1120. second connecting ring; 1121. rotating block.
[0018] In order to further understand the contents of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely intended to explain the present invention and not intended to limit the present invention.
[0019] Embodiment 1
[0020] As shown in FIGs. 1 to 11, this embodiment provides a treatment device for microwave desulfurization of coal, including a plurality of heat exchange mechanisms 110 with the same structure, where the heat exchange mechanism 110 includes a shell 210, a heat exchange cavity 211 is disposed in the shell 210, a first air inlet pipe 101 extending above the shell 210 is disposed in the heat exchange cavity 211, a vent hole is disposed at a side wall of the first air inlet pipe 101 and located below the heat exchange cavity 211, a spiral second air inlet pipe 102 is sleeved at an outer side surface of the first air inlet pipe 101 and located in the heat exchange cavity 211, and both ends of the second air inlet pipe 102 extend out of the top and the bottom of the shell 210 respectively; an attachment mechanism 220 sleeving an outer side of the second air inlet pipe 102 is disposed in the heat exchange cavity 211, and an air outlet pipe 231 extending out of the shell 210 is disposed above the heat exchange cavity 211 and located between the attachment mechanisms 220; ends of the first air inlet pipe 101, the 7 second air inlet pipe 102 and the air outlet pipe 231 are each provided with a connecting mechanism 240, the connecting mechanism 240 includes a first connecting ring 1110, a rotating"! 01482 groove 1111 is disposed on an outer side wall of the first connecting ring 1110 and located at an upper end along the circumference of the first connecting ring 1110, the outside of the first connecting ring 1110 is sleeved with a second connecting ring 1120, and an inner side wall of the second connecting ring 1120 is provided with a rotating block 1121 matching the rotating groove 1111; a first connecting pipe 103 is connected between the air outlet pipe 231 located between adjacent heat exchange mechanisms 110 and the first air inlet pipe 101 through a connecting mechanism 240, and a second connecting pipe 104 is connected between the second air inlet pipe 102 located below the shell 210 and the adjacent second air inlet pipe 102 located above the shell 210 through a connecting mechanism 240.
[0021] High-temperature elemental sulfur vapor generated by a sulfur reactor in this embodiment enters the first air inlet pipe 101 and enters the heat exchange cavity 211 through the vent hole, lower-temperature H2S and SO: flue gases generated by raw coal by pyrolysis through a microwave reactor enter the second air inlet pipe 102 from the upper end of the second air inlet pipe 102 and exchange heat with the high-temperature elemental sulfur vapor in the heat exchange cavity 211, so that heat of the elemental sulfur vapor can be better utilized; the second air inlet pipe 102 is disposed in a threaded manner, so that the length of the second air inlet pipe 102 in the heat exchange cavity 211 is increased, thereby bringing the elemental sulfur vapor into full contact with the second air inlet pipe 102, and making the heat exchange effect better; the vent hole is disposed at the lower end of the first air inlet pipe 101, the air outlet pipe 231 is disposed at the upper end of the heat exchange cavity 211, so that the high-temperature elemental sulfur vapor rises from the bottom of the heat exchange cavity 211 to fill the entire heat exchange cavity 211 and is discharged out of the heat exchange cavity 211 through the air outlet pipe 231, so that the high-temperature elemental sulfur vapor is in full contact with the second air inlet pipe 102, making the heat exchange effect better; through the arrangement of the attachment mechanism 220, when the high-temperature elemental sulfur vapor exchanges heat with the second air inlet pipe 102, sulfur generated by condensation of the elemental sulfur vapor is attached to the attachment mechanism 220; due to the arrangement of the first connecting pipe 103 and the second connecting pipe 104, the heat exchange mechanisms 110 are sequentially connected to form a multi-stage heat exchange, so that the heat of the high-temperature elemental sulfur vapor can be sufficiently recovered; the arrangement of the connecting mechanism 240 facilitates the mounting of the first connecting pipe 103 and the second connecting pipe 104, where an end of the air outlet pipe 231, the first air inlet pipe 101 or the second air inlet pipe 102 is in threaded connection into the first 8 connecting ring 1110 by rotating the first connecting ring 1110, both ends of the first connecting pipe 103 and the second connecting pipe 104 are in threaded connection into the corresponding = | 01482 second connecting rings 1120 respectively by rotating the second connecting rings 1120, so that the mounting and connection of the first connecting pipe 103 and the second connecting pipe 104 is quicker and more convenient, and the use of the treatment device for microwave desulfurization of coal is more convenient.
[0022] In this embodiment, the attachment mechanism 220 includes two oppositely disposed semi-circular mounting plates 410, opposite sides of the two mounting plates 410 are provided with mounting grooves 511, first guide pillars 521 are disposed in the mounting groove 511 and located at four corners in the left-right direction, an attachment plate 420 is disposed in the mounting groove 511, the attachment plate 420 is provided with a first through hole 711 for the corresponding first guide pillar 521 to pass through, and the first guide pillars 521 is sleeved with a first spring 522 located between the attachment plate 420 and a side wall of the mounting groove 511; rotating bases 431 are disposed on the opposite sides of the two mounting plates 410 and located at upper and lower ends, a rotating shaft 432 extending out of the shell 210 is disposed between the two rotating bases 431, and convex blocks 531 abutting against a side of the attachment plate 420 are oppositely disposed on the rotating shaft 432.
[0023] Through the structure in this embodiment, by the arrangement of the two semi-circular mounting plates 410, the mounting plates 410 can enclose the second air inlet pipe 102, where an end face of the mounting plate 410 is in airtight matching with a side wall of the heat exchange cavity 211, so that sulfur generated by heat exchange of high-temperature sulfur vapor is better attached to the mounting plate 410; through the arrangement of the mounting groove 511, the first guide pillar 521, the first spring 522 and the attachment plate 420, the attachment plate 420 can be better mounted in the mounting groove 511, and the first spring 522 provides an elastic force to always push the attachment plate 420 to move to an opening of the mounting groove 511; through the arrangement of the rotating base 431 and the rotating shaft 432, the rotating shaft 432 is rotatably disposed on the mounting plate 410; since the rotating shaft 432 is provided with the convex block 531, in the rotating process of the rotating shaft 432, the convex block 531 can squeeze the attachment plate 420 to make it move into the mounting groove 511; and when the convex block 531 is far away from the attachment plate 420, the first spring 522 pushes the attachment plate 420 to the opening of the mounting groove 511, so that the attachment plate 420 vibrates to better cause the sulfur attached to the attachment plate 420 to fall to the bottom of the heat exchange cavity 211.
[0024] In this embodiment, a chute 311 having a T-shaped cross section is disposed on an 9 upper side wall of the heat exchange cavity 211 in the left-right direction, a lower side of the shell 210 is provided with grooves 321 corresponding to the mounting plate 410, a second guideV’! 01482 pillar 331 is disposed in the groove 321 in the left-right direction, and tops of the grooves 321 are each provided with a discharging port 322 matching a lower end face of the corresponding mounting plate 410; upper end faces of the mounting plates 410 are each provided with a sliding rail 411 sliding in the chute 311, a lower end face of the mounting plate 410 is provided with an extension portion 412 passing through the discharging port 322 and extending into the groove 321, the extension portion 412 is provided with a connecting portion 413 located in the groove 321 and used for sealing the discharging port 322, the connecting portion 413 is provided with a second through hole 414 for the second guide pillar 331 to pass through, the second guide pillar 331 is sleeved with a second spring 332 located between the connecting portion 413 and a side wall of the groove 321, the second spring 332 is used to push the mounting plates 410 to move in opposite directions, and opposite side walls of the two grooves 321 are each provided with a moving groove 324 for the rotating shaft 432 to pass through.
[0025] Through the structure in this embodiment, by the arrangement of the groove 321, the discharging port 322, the extension portion 412, and the connecting portion 413, the extension portion 412 at a lower end of the mounting plate 410 extends out of the discharging port 322 to the inside of the groove 321, and at the same time, the connecting portion 413 is located in the groove 321; and since the extension portion 412 and an end wall of the connecting portion 413 are in airtight matching with a side wall of the groove 321, the discharging port 322 can be blocked, so that the heat exchange effect of the heat exchange cavity 211 is better; through the arrangement of the second guide pillar 331, the second spring 332, the chute 311 and the sliding rail 411, the mounting plate 410 is restricted in the heat exchange cavity 211 so that it can only move in the left-right direction; at the same time, the second spring 332 pushes the connecting portion 413 to move to make the mounting plate 410 capable of automatically blocking the discharging port 322, ensuring the heat exchange effect; through the arrangement of the moving groove 324, a side wall of the rotating base 431 and a bottom wall of the heat exchange cavity 211 are in an airtight matching state under the conditions of blockage of the discharging port 322, the rotating shaft 432 that is pulled in the left-right direction and extends out of the shell 210 drives the mounting plate 410 to move in the groove 321 to open the discharging port 322, which facilitates discharge of sulfur falling at the bottom of the heat exchange cavity 211, and effectively facilitates the collection of sulfur generated by heat exchange.
[0026] In this embodiment, a spring mounting cavity 811 with a downward opening is disposed in the rotating shaft 432, limiting chutes 812 disposed in the up-and-down direction 10 are oppositely disposed on an inner side wall of the spring mounting cavity 811, a push rod 822 extending out of the spring mounting cavity 811 is disposed in the spring mounting cavity 81 11101482 through a third spring 821, and the convex block 531 is disposed on the push rod 822 and extends out of the corresponding limiting chute 812; a positioning rod 323 located below the connecting portion 413 is disposed in the groove 321 in the front-rear direction, and the positioning rod 323 is used to abut against the push rod 822 to control the opening and closing of the discharging port 322.
[0027] Through the structure in this embodiment, the push rod 822 is pushed by the third spring 821 to extend out of the lower end of the rotating shaft 432 and abut against the positioning rod 323 in the groove 321, so that the rotating shaft 432 is restricted, thereby keeping the discharging port 322 in a normally open state, which facilitates the discharge of sulfur in the heat exchange cavity 211; when the push rod 822 is retracted into the spring mounting cavity 811 and releases the abutting fit with the positioning rod 323, the second spring 332 automatically pushes the mounting plate 410 to block the discharging port 322; through the arrangement of the limiting chute 812, the convex block 531 fixed on the push rod 822 extends out of the limiting chute 812, so that the attachment plate 420 can be driven to rotate, the push rod 822 can be limited to prevent the push rod 822 from sliding out of the spring mounting cavity 811.
[0028] In this embodiment, a lower side wall of the mounting groove 511 is provided with a first inclined plane 611, so that the sulfur falling from the attachment plate 420 can slide from the first inclined plane 611 to the bottom of the heat exchange cavity 211 better, which better prevents the sulfur from being accumulated at the bottom of the mounting groove 511.
[0029] In this embodiment, a side of the attachment plate 420 towards the second air inlet pipe 102 is provided with a sliding groove 721 in the up-and-down direction, limiting clamping grooves 722 are disposed on opposite sides of the sliding groove 721 in the up-and-down direction, and a top end face of the sliding groove 721 is provided with a third guide pillar 723 in up-and-down direction; a movable plate 730 which is movable and has a lower end extending out of a lower end face of an attachment plate 720 is disposed in the sliding groove 721, a side of the movable plate 730 is provided with a slider 1011 located in the corresponding limiting clamping groove 722, the movable plate 730 is provided with a third through hole 1012 for the third guide pillar 723 to pass through, the third guide pillar 723 is sleeved with a fourth spring 724 located between the movable plate 730 and a top wall of the sliding groove 721, and a lower end face of the movable plate 730 is provided with a second inclined plane 1013 used to match the first inclined plane 611 to push the movable plate 730 to move upwards. 11
[0030] Through the structure in this embodiment, by the arrangement of the sliding groove 101482 721, the limiting clamping groove 722, the movable plate 730 and the slider 1011, the slider 1011 is located in the limiting clamping groove 722 and a lower end of the limiting clamping groove 722 is blocked, so that the movable plate 730 can move up and down in the sliding groove 721 while being capable of being mounted in the sliding groove 721; through the arrangement of the third guide pillar 723, the fourth spring 724 and the third through hole 1012, the third guide pillar 723 extends into the third through hole 1012, so that the fourth spring 821 provides an elastic force to push the movable plate 730 to move downwards while the fourth spring 821 is mounted; through the arrangement of the second inclined plane 1013, when the rotating shaft 432 rotates to drive the attachment plate 420 to move into the mounting groove 511, the second inclined plane 1013 squeezes the first inclined plane 611, thereby causing the movable plate 730 to move into the sliding groove 721; and when the attachment plate 420 moves to an opening of the mounting groove 511, the fourth spring 724 pushes the movable plate 730 to move out of the sliding groove 721, so that the movable plate 730 can vibrate up and down in the sliding groove 721, making the effect of falling of sulfur on the movable plate 730 better.
[0031] In this embodiment, the heat exchange mechanisms 110 are disposed on a machine frame 100, the machine frame 100 includes a supporting plate 911, square through holes 912 are disposed on the supporting plate 911 at intervals, and an upper end side wall of the square through hole 912 expands outwards to form a mounting step 921 for mounting the shell 210.
[0032] In this embodiment, through the arrangement of the supporting plate 911 and the mounting step 921, the shell 210 can be clamped and mounted on the mounting step 921 such that the shell 210 can be mounted on the supporting plate 911; at the same time, through the arrangement of the square through hole 912, sulfur discharged from the discharging port 322 can drop below the supporting plate 911 through the square through hole 912, thereby facilitating collection.
[0033] In this embodiment, a through groove 913 for the second connecting pipe 104 to pass through is disposed on the supporting plate 911 and located between adjacent mounting steps 921, so that the second connecting pipe 104 can better connect the adjacent heat exchange mechanisms 110, the second connecting pipe 104 is better placed, and the heat recovery and treatment device is more attractive.
[0034] In this embodiment, supporting columns 914 are disposed on a lower plate surface of the supporting plate 911 and located at four corners, so that the supporting plate 911 is better supported. 12
[0035] This embodiment also provides a treatment method based on any of the foregoing 101482 treatment devices for microwave desulfurization of coal, including the following steps:
[0036] Step 1: Sequentially connect and mount a first connecting pipe 103 and a second connecting pipe 104 by connecting mechanisms 240 to connect heat exchange mechanisms 110 to each other.
[0037] Step 2: Introduce high-temperature elemental sulfur vapor generated by a sulfur reactor into a heat exchange cavity 211 through a first air inlet pipe 101, and introduce lower-temperature H2S and SO: flue gases generated by raw coal through a microwave reactor into a second air inlet pipe 102 through an upper end of the second air inlet pipe 102, so that the flue gases exchange heat in the heat exchange cavity 211.
[0038] Step 3: After a period of time of heat exchange, shut down the sulfur reactor and the microwave reactor, and poke a rotating shaft 432 to make a push rod 822 in the rotating shaft 432 abut against a positioning rod 323 in a groove 321, so that a discharging port 322 in a shell 210 is in a normally open state.
[0039] Step 4: Rotate the rotating shaft 432, so that a convex block 531 circularly pushes an attachment plate 420, the attachment plate 420 vibrates in the left-right direction, and a movable plate 730 on the attachment plate 420 vibrates up and down, thereby better causing sulfur attached to the attachment plate 420 to fall for discharge from the discharging port 322 and collection.
[0040] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the patent scope of the present invention should fall within the patent coverage of the present invention.
13
Claims (10)
1. A treatment device for microwave desulfurization of coal, comprising a plurality of heat exchange mechanisms (110) with the same structure, wherein the heat exchange mechanism (110) comprises a shell (210), a heat exchange cavity (211) is disposed in the shell (210), a first air inlet pipe (101) extending above the shell (210) is disposed in the heat exchange cavity (211), a vent hole is disposed at a side wall of the first air inlet pipe (101) and located below the heat exchange cavity (211), a spiral second air inlet pipe (102) is sleeved at an outer side surface of the first air inlet pipe (101) and located in the heat exchange cavity (211), and both ends of the second air inlet pipe (102) extend out of the top and the bottom of the shell (210) respectively; an attachment mechanism (220) sleeving an outer side of the second air inlet pipe (102) is disposed in the heat exchange cavity (211), and an air outlet pipe (231) extending out of the shell (210) is disposed above the heat exchange cavity (211) and located between the attachment mechanisms (220); ends of the first air inlet pipe (101), the second air inlet pipe (102) and the air outlet pipe (231) are each provided with a connecting mechanism (240), the connecting mechanism (240) comprises a first connecting ring (1110), a rotating groove (1111) is disposed on an outer side wall of the first connecting ring (1110) and located at an upper end along the circumference of the first connecting ring (1110), the outside of the first connecting ring (1110) is sleeved with a second connecting ring (1120), and an inner side wall of the second connecting ring (1120) is provided with a rotating block (1121) matching the rotating groove (1111); a first connecting pipe (103) is connected between the air outlet pipe (231) located between adjacent heat exchange mechanisms (110) and the first air inlet pipe (101) through a connecting mechanism (240), and a second connecting pipe (104) is connected between the second air inlet pipe (102) located below the shell (210) and the adjacent second air inlet pipe (102) located above the shell (210) through a connecting mechanism (240).
2. The treatment device for microwave desulfurization of coal according to claim 1, wherein the attachment mechanism (220) comprises two oppositely disposed semi-circular mounting plates (410), opposite sides of the two mounting plates (410) are provided with mounting grooves (511), first guide pillars (521) are disposed in the mounting groove (511) and located at four corners in the left-right direction, an attachment plate (420) is disposed in the mounting groove (511), the attachment plate (420) is provided with a first through hole (711) for the corresponding first guide pillar (521) to pass through, and the first guide pillars (521) is sleeved with a first spring (522) located between the attachment plate (420) and a side wall of the mounting groove (511); rotating bases (431) are disposed on the opposite sides of the two | 14 mounting plates (410) and located at upper and lower ends, a rotating shaft (432) extending out of the shell (210) is disposed between the two rotating bases (431), and convex blocks (531)LU101482 abutting against a side of the attachment plate (420) are oppositely disposed on the rotating shaft (432).
3. The treatment device for microwave desulfurization of coal according to claim 2, wherein a chute (311) having a T-shaped cross section is disposed on an upper side wall of the heat exchange cavity (211) in the left-right direction, a lower side of the shell (210) is provided with grooves (321) corresponding to the mounting plate (410), a second guide pillar (331) is disposed in the groove (321) in the left-right direction, and tops of the grooves (321) are each provided with a discharging port (322) matching a lower end face of the corresponding mounting plate (410); upper end faces of the mounting plates (410) are each provided with a sliding rail (411) sliding in the chute (311), a lower end face of the mounting plate (410) is provided with an extension portion (412) passing through the discharging port (322) and extending into the groove (321), the extension portion (412) is provided with a connecting portion (413) located in the groove (321) and used for sealing the discharging port (322), the connecting portion (413) is provided with a second through hole (414) for the second guide pillar (331) to pass through, the second guide pillar (331) is sleeved with a second spring (332) located between the connecting portion (413) and a side wall of the groove (321), the second spring (332) is used to push the mounting plates (410) to move in opposite directions, and opposite side walls of the two grooves (321) are each provided with a moving groove (324) for the rotating shaft (432) to pass through.
4. The treatment device for microwave desulfurization of coal according to claim 3, wherein a spring mounting cavity (811) with a downward opening is disposed in the rotating shaft (432), limiting chutes (812) disposed in the up-and-down direction are oppositely disposed on an inner side wall of the spring mounting cavity (811), a push rod (822) extending out of the spring mounting cavity (811) is disposed in the spring mounting cavity (811) through a third spring (821), and the convex block (531) is disposed on the push rod (822) and extends out of the corresponding limiting chute (812); a positioning rod (323) located below the connecting portion (413) is disposed in the groove (321) in the front-rear direction, and the positioning rod (323) is used to abut against the push rod (822) to control the opening and closing of the discharging port (322).
5. The treatment device for microwave desulfurization of coal according to claim 2, wherein a lower side wall of the mounting groove (511) is provided with a first inclined plane (611).
6. The treatment device for microwave desulfurization of coal according to claim 2, wherein a 15 side of the attachment plate (420) towards the second air inlet pipe (102) is provided with a sliding groove (721) in the up-and-down direction, limiting clamping grooves (722) are LU101482 disposed on opposite sides of the sliding groove (721) in the up-and-down direction, and a top end face of the sliding groove (721) is provided with a third guide pillar (723) in up-and-down direction; a movable plate (730) which is movable and has a lower end extending out of a lower end face of an attachment plate (720) is disposed in the sliding groove (721), a side of the movable plate (730) is provided with a slider (1011) located in the corresponding limiting clamping groove (722), the movable plate (730) is provided with a third through hole (1012) for the third guide pillar (723) to pass through, the third guide pillar (723) is sleeved with a fourth spring (724) located between the movable plate (730) and a top wall of the sliding groove (721), and a lower end face of the movable plate (730) is provided with a second inclined plane (1013) used to match the first inclined plane (611) to push the movable plate (730) to move upwards.
7. The treatment device for microwave desulfurization of coal according to claim 1, wherein the heat exchange mechanisms (110) are disposed on a machine frame (100), the machine frame (100) comprises a supporting plate (911), square through holes (912) are disposed on the supporting plate (911) at intervals, and an upper end side wall of the square through hole (912) expands outwards to form a mounting step (921) for mounting the shell (210).
8. The treatment device for microwave desulfurization of coal according to claim 7, wherein a through groove (913) for the second connecting pipe (104) to pass through is disposed on the supporting plate (911) and located between adjacent mounting steps (921).
9. The treatment device for microwave desulfurization of coal according to claim 8, wherein supporting columns (914) are disposed on a lower plate surface of the supporting plate (911) and located at four corners.
10. A treatment method based on the treatment device for microwave desulfurization of coal according to any one of claims 1 to 9, comprising the following steps: step 1: sequentially connecting and mounting a first connecting pipe (103) and a second connecting pipe (104) by connecting mechanisms (240) to connect heat exchange mechanisms (110) to each other; step 2: introducing high-temperature elemental sulfur vapor generated by a sulfur reactor into a heat exchange cavity (211) through a first air inlet pipe (101), and introducing lower-temperature H2S and SO; flue gases generated by raw coal through a microwave reactor into a second air inlet pipe (102) through an upper end of the second air inlet pipe (102), so that the flue gases exchange heat in the heat exchange cavity (211); 16 step 3: after a period of time of heat exchange, shutting down the sulfur reactor and the microwave reactor, and poking a rotating shaft (432) to make a push rod (822) in the rotatingl-U101482 shaft (432) abut against a positioning rod (323) in a groove (321), so that a discharging port (322) in a shell (210) is in a normally open state; and step 4: rotating the rotating shaft (432), so that a convex block (531) circularly pushes an attachment plate (420), the attachment plate (420) vibrates in the left-right direction, and a movable plate (730) on the attachment plate (420) vibrates up and down, thereby better causing sulfur attached to the attachment plate (420) to fall for discharge from the discharging port (322) and collection.
17
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| CN201911031696.3A CN110655964B (en) | 2019-10-28 | 2019-10-28 | Treatment device and method applied to microwave desulfurization of coal |
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| CN102816623A (en) * | 2012-08-14 | 2012-12-12 | 南京三乐微波技术发展有限公司 | Coal quality improvement apparatus for microwave low temperature dehydration and desulfurization |
| DE102011081802A1 (en) * | 2011-08-30 | 2013-02-28 | Siemens Aktiengesellschaft | System useful for continuous thermal treatment of biomass for manufacturing millable solid-fuels having a high calorific value, comprises an arrangement including a rotary tube (10) having a gradient in a flow direction of a treated biomass |
| WO2015198931A1 (en) * | 2014-06-24 | 2015-12-30 | マイクロ波化学株式会社 | Chemical reaction device |
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| JP2000193382A (en) * | 1998-12-25 | 2000-07-14 | Osaka Gas Co Ltd | Heat exchanger |
| CN201129965Y (en) * | 2007-11-20 | 2008-10-08 | 镇海石化工程有限责任公司 | Sulfur condenser for sulfur recovery |
| CN202719901U (en) * | 2012-06-13 | 2013-02-06 | 广东绅宝电器有限公司 | Multi-stage high-efficiency heat exchanger |
| CN107150998B (en) * | 2017-06-07 | 2020-01-07 | 中国科学院过程工程研究所 | System and method for coal desulfurization and elemental sulfur recovery |
| CN208526239U (en) * | 2018-06-26 | 2019-02-22 | 山东瑞嘉通风环保科技有限公司 | A kind of air distributor of external desulfurzation |
| CN208588257U (en) * | 2018-06-28 | 2019-03-08 | 唐山市古冶区盛唐热力有限公司 | A kind of energy-saving slag-water heat exchanger |
| CN208671735U (en) * | 2018-07-05 | 2019-03-29 | 石家庄市方远化工设备有限公司 | A kind of novel spiral winding tube type heat exchanger |
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2019
- 2019-10-28 CN CN201911031696.3A patent/CN110655964B/en active Active
- 2019-11-18 LU LU101482A patent/LU101482B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011081802A1 (en) * | 2011-08-30 | 2013-02-28 | Siemens Aktiengesellschaft | System useful for continuous thermal treatment of biomass for manufacturing millable solid-fuels having a high calorific value, comprises an arrangement including a rotary tube (10) having a gradient in a flow direction of a treated biomass |
| CN102816623A (en) * | 2012-08-14 | 2012-12-12 | 南京三乐微波技术发展有限公司 | Coal quality improvement apparatus for microwave low temperature dehydration and desulfurization |
| WO2015198931A1 (en) * | 2014-06-24 | 2015-12-30 | マイクロ波化学株式会社 | Chemical reaction device |
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| CN110655964A (en) | 2020-01-07 |
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Effective date: 20210212 |