CN209922906U - System for production carbide - Google Patents
System for production carbide Download PDFInfo
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- CN209922906U CN209922906U CN201920315007.0U CN201920315007U CN209922906U CN 209922906 U CN209922906 U CN 209922906U CN 201920315007 U CN201920315007 U CN 201920315007U CN 209922906 U CN209922906 U CN 209922906U
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Abstract
The utility model provides a system for production carbide, include: the mixing and forming unit is used for fully mixing the coal powder, the quicklime powder and the binder and pressing the mixture into green pellets; a vertical furnace pyrolysis unit for pyrolyzing the green pellets into hot pellets; the cold material batching unit is used for batching quicklime blocks; the hot charging and hot conveying unit is used for conveying hot pellets; the calcium carbide furnace unit is used for smelting the thermal pellets and the quicklime blocks to generate calcium carbide; production carbide's system adopt fine coal and quick lime as the main raw materials, carry through mixing shaping, material pyrolysis and high temperature, realize fine coal to the whole replacements of the blue charcoal of cubic, fundamentally reduces from coal to the energy waste in the middle of the carbide product, shortens production, transports the flow, reduces environmental pollution, reduction in production cost.
Description
Technical Field
The utility model relates to a carbide production facility technical field, in particular to system of production carbide.
Background
The calcium carbide production capacity of China accounts for about 95% of the total world production energy, and as the calcium carbide production capacity and the yield continuously and rapidly increase, the technology, complete equipment, energy conservation and emission reduction and comprehensive utilization of resources of the calcium carbide industry all obtain outstanding achievements, but the technology does not fundamentally solve the problems of high pollution and high energy consumption of the calcium carbide industry. At present, the semi coke used as the calcium carbide raw material by calcium carbide enterprises consumes a large amount of electric energy through the processes of transferring, drying, screening and the like, and 10-30% of the generated powder can not be added into a calcium carbide furnace and can only be burnt as common fuel. The newly-built semi-coke dry distillation furnace is basically required to be synchronously matched with a dry quenching device, so that the investment is huge, and the sensible heat of the semi-coke can be only recycled by about 83 percent, thereby causing huge waste of heat energy.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a system for producing carbide to solve the technical problem that the carbide trade is costly, high-pollution.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a system for producing calcium carbide, comprising:
the mixing and forming unit is used for fully mixing the coal powder, the quicklime powder and the binder and pressing the mixture into green pellets;
a vertical furnace pyrolysis unit for pyrolyzing the green pellets into hot pellets;
the cold material batching unit is used for batching quicklime blocks;
the hot charging and hot conveying unit is used for conveying hot pellets;
the calcium carbide furnace unit is used for smelting the thermal pellets and the quicklime blocks to generate calcium carbide;
the discharge gate of mixing shaping unit with the pan feeding mouth of vertical stove pyrolysis unit is connected, the discharge gate of vertical stove pyrolysis unit with the discharge gate of cold burden batching unit all with hot dress heat is sent the unit connection, the hot dress heat send the delivery port of unit with calcium carbide stove unit connection.
Further, the mixed forming unit comprises a first stirring device, a second stirring device and a ball pressing forming device, wherein the first stirring device is provided with a first feeding port and a first discharging port, the second stirring device is provided with a second feeding port and a second discharging port, the ball pressing forming device is provided with a third feeding port and a third discharging port, the first discharging port is connected with the second feeding port, and the second discharging port is connected with the third feeding port.
Further, the vertical furnace pyrolysis unit comprises a vertical furnace, a carbonization chamber is arranged in the vertical furnace, the middle part of the carbonization chamber is a carbonization section, the green pellets are carbonized in the carbonization section to form hot pellets, a material pushing device used for pushing the hot pellets is arranged at the lower part of the carbonization chamber, and an outlet of the material pushing device is positioned on the hot charging hot conveying unit and is correspondingly provided with a material receiving bin.
Further, the temperature of the dry distillation section is 750 ℃.
Furthermore, a weighing sensor is arranged in the material receiving bin.
Further, the system also comprises a gas purification system, wherein the gas purification system is used for purifying the pyrolyzed gas to obtain purified gas, coal tar and crude benzene.
Further, the hot charging and hot conveying unit is high-temperature-resistant conveying equipment, and the high-temperature-resistant conveying equipment is protected by nitrogen filling and sealed.
Furthermore, cold burden batching unit includes the feed bin, quicklime piece has been placed in the feed bin, just the discharge gate and the high temperature resistant conveying equipment of feed bin correspond the setting.
Further, the calcium carbide furnace unit comprises a sealed calcium carbide furnace and a furnace gas purification and post-treatment system, the furnace gas purification and post-treatment system is used for purifying furnace gas, the sealed calcium carbide furnace is provided with a furnace inlet and a furnace outlet, the furnace inlet is connected with the high-temperature-resistant conveying equipment, and the furnace outlet is provided with a furnace outlet vehicle.
Further, the cooling device also comprises a winch, and the winch is used for pulling the furnace discharging vehicle to a factory building for cooling.
Compared with the prior art, the system for producing calcium carbide has the following advantages:
production carbide's system adopt fine coal and quick lime as the main raw materials, through mixing shaping, material pyrolysis, high temperature transport and electric heat method carbide production, realize fine coal to the whole replacements of cubic blue charcoal, fundamentally reduces from coal to the energy waste in the middle of the carbide product, shortens production, transports the flow, reduces environmental pollution, reduction in production cost.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a system for producing calcium carbide according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for preparing calcium carbide by using the system shown in fig. 1.
Description of reference numerals:
1. the device comprises a mixing forming unit, 11, a first stirring device, 12, a second stirring device, 13, a pressure ball forming device, 2, a vertical furnace pyrolysis unit, 21, a vertical furnace, 22, a coal gas purification system, 3, a cold burden batching unit, 31, a storage bin, 4, a hot charge hot delivery unit, 5, a calcium carbide furnace unit, 51, a sealed calcium carbide furnace, 52, a furnace gas purification and furnace gas post-treatment system.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-2, a system for producing calcium carbide comprises: the mixing and forming unit 1 is used for fully mixing the coal powder, the quicklime powder and the binder and pressing the mixture into green pellets; the coal powder adopted by the raw material can be low-rank coal such as long flame coal, the raw material source is wide, the production cost is low, the mixing and forming unit 1 comprises a first stirring device 11, a second stirring device 12 and a ball pressing and forming device 13, preferably, the first stirring device is a double-shaft stirrer, the quicklime powder and a binder A are preliminarily mixed, the binder A can be coal tar, anthracene oil, heavy oil and other raw materials, and the coal tar is preferably selected. The addition amount of the binder A is adjusted according to the amount of quicklime powder, the mass ratio of the binder A to the quicklime powder is about 1-10%, the quicklime powder can utilize undersize materials of quicklime blocks, the cost is reduced, the emission of solid waste is reduced, and the binder A forms a hydrophobic passivation film on the surface of the quicklime powder to prevent the slaking reaction of the quicklime powder and water; preferably, the second stirring device is a powerful mixer, the powerful mixer further mixes and uniformly stirs the mixed quicklime powder, the coal powder with the granularity of less than 3mm and the binder B, the binder B is preferably a mixture of asphalt, caking coal, humic acid and the like, and the granularity is less than or equal to 1 mm. The addition amount of the binder B and the mass ratio of the mixed materials are about 1-20%, the binder B has strong cohesiveness, the coal powder and the quicklime powder can be subjected to high-pressure mixing molding at normal temperature, preferably, the ball pressing molding device is a high-pressure ball pressing machine, the mixed materials are pressed into balls to obtain mixed balls with uniform size, the granularity of the generated green balls is about 45mm, the compressive strength is not less than 400N, the 2m drop strength (more than 5mm) is not less than 95%, the pressed green balls are sent into a vertical furnace pyrolysis unit for pyrolysis, the specification of the preferred high-pressure ball pressing machine is selected to be that the diameter of a compression roller is 800mm, the maximum pressure between the compression rollers is 380t, the linear pressure is 11t/cm, the balling rate of the ball pressing machine is more than 90%, the ball pressing machine has a pre-pressing function, the ball pressing machine is provided with a spherical die for controlling the shape and specification of the required balls, the first stirring device 11 is provided with a first feeding port and, the second stirring device 12 is provided with a second feeding port and a second discharging port, the ball pressing forming device 13 is provided with a third feeding port and a third discharging port, the first discharging port is connected with the second feeding port, and the second discharging port is connected with the third feeding port.
A vertical furnace pyrolysis unit 2, the vertical furnace pyrolysis unit 2 being used for pyrolyzing the green pellets into hot pellets; the green pellets produced by the pellet-pressing forming device are placed in a vertical furnace, the vertical furnace pyrolysis unit 2 comprises a vertical furnace 21, a carbonization chamber is arranged in the vertical furnace 21, the middle part of the carbonization chamber is a dry distillation section, the green pellets are carbonized into thermal pellets in the dry distillation section, a material pushing device used for pushing the thermal pellets is arranged at the lower part of the carbonization chamber, a material receiving bin is correspondingly arranged at an outlet of the material pushing device on the hot charging and hot conveying unit 4, the vertical furnace 21 is an internal heating type vertical carbonization furnace, normally non-caking coal, weakly caking coal, long flame coal and the like are used as raw materials, medium and low temperature dry distillation is carried out at the carbonization temperature of below 750 ℃, and the vertical furnace system comprises two sections of pyrolysis and gas purification. The green pellets are added into a vertical furnace, move from top to bottom in a carbonization chamber and are in countercurrent contact with high-temperature gas sent into the carbonization chamber from a combustion chamber. The carbonization section in the middle of the carbonization chamber, through which the green pellets are heated to about 750 ℃ and carbonized into hot pellets required by the calcium carbide furnace; the hot pellet falls into high temperature resistant conveying equipment through the pusher of carbomorphism room lower part, gets into at last about 700 ℃ and connects the feed bin, connects the feed bin to set up weighing sensor, can be used to weigh the quality of the hot pellet of sending into hot dress heat and send unit 4, and the hot pellet who weighs is placed and is transported to the carbide stove unit on high temperature resistant conveying equipment.
The vertical furnace is characterized by further comprising a coal gas purification system 22, wherein the coal gas purification system is arranged on one side of the vertical furnace, the coal gas purification system 22 is used for purifying the pyrolyzed coal gas to obtain purified coal gas, coal tar and crude benzene, the purified and cooled purified coal gas can be used as fuel gas, and the coal tar and crude benzene are byproducts of coal gas purification and can be sold as products.
The cold burden batching unit 3 is used for batching quicklime blocks; the cold burden batching unit 3 comprises a bin 31, quicklime blocks are placed in the bin 31, a discharge hole of the bin is arranged corresponding to the high-temperature-resistant conveying equipment, the quicklime blocks are placed on the high-temperature-resistant conveying equipment and conveyed to the calcium carbide furnace unit together with hot pellets, and a hot charging and hot conveying unit 4 is used for conveying the hot pellets; the hot charging and hot conveying unit 4 is high temperature resistant conveying equipment which can be a heat insulation material tank and can also be equipment such as a high temperature scraper conveyor. The conveying equipment adopts nitrogen-filled protection and sealing measures to completely isolate air and carry in a closed manner. The conveying equipment comprises heat preservation measures, the material sensible heat loss is reduced as much as possible, according to the required proportion of the calcium carbide furnace, a certain amount of hot pellets are connected to a material receiving port at the bottom of the vertical furnace 21 by using high-temperature-resistant conveying equipment, then a certain amount of quicklime blocks are added to the bottom of a material bin 31 in the cold material proportioning unit 3, and then the quicklime blocks are conveyed to a calcium carbide furnace feeding system 51 at the upper part of the calcium carbide furnace unit 5, wherein the particle size of the quicklime blocks is larger than 5mm, a scheme of twice feeding of the hot pellets and the quicklime blocks is adopted, the raw material proportion can be timely adjusted according to.
The calcium carbide furnace unit 5 is used for smelting the hot pellets and the quicklime blocks to generate calcium carbide; the calcium carbide furnace unit 5 comprises a sealed calcium carbide furnace 51 and a furnace gas purification and post-treatment system 52, the furnace gas purification and post-treatment system 52 is arranged on one side of the sealed calcium carbide furnace, the furnace gas purification and post-treatment system 52 is used for purifying furnace gas, the sealed calcium carbide furnace is provided with a furnace inlet and a furnace outlet, the furnace inlet is connected with high-temperature-resistant conveying equipment, a furnace outlet is arranged at the furnace outlet, the calcium carbide furnace 52 is a large-sized sealed calcium carbide furnace, and the smelting temperature is 1800-2200 ℃. High temperature resistant conveying equipment adds hot pellet and quicklime piece in carbide stove feeding system 51, whole feeding process is provided with nitrogen protection in order isolated air, hot pellet is carried through keeping warm, directly add in the carbide stove, the sensible heat of hot pellet is almost all utilized, the energy waste has been reduced, the carbide that the smelting generated passes through the fire door and regularly discharges, flow in the carbide pot on the car of stove, pull out the car of stove by the.
The high-temperature coarse furnace gas generated by the calcium carbide furnace contains a large amount of dust, and is comprehensively utilized after being subjected to temperature reduction and dust removal by the furnace gas purification and furnace gas post-treatment system 52, so that the carbon monoxide content of the furnace gas is high, and products with higher added values can be produced.
The discharge gate of mixing shaping unit 1 with the pan feeding mouth of vertical stove pyrolysis unit 2 is connected, the discharge gate of vertical stove pyrolysis unit 2 with the discharge gate of cold burden batching unit 3 all with hot charge heat is sent unit 4 to be connected, the heat charge heat send unit 4 the material conveying mouth with calcium carbide stove unit 5 is connected.
The system adopts pulverized coal and quicklime as main raw materials, and realizes the complete replacement of the bulk semi coke by the pulverized coal through mixing molding, material pyrolysis, high-temperature conveying and an electrothermal calcium carbide production process. Fundamentally reduces the energy waste from coal to the middle of the calcium carbide product, shortens the production and transportation process, reduces the environmental pollution and lowers the production cost.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A system for producing calcium carbide is characterized by comprising:
the mixing and forming unit (1) is used for fully mixing the coal powder, the quicklime powder and the binder and pressing the mixture into green pellets;
a vertical furnace pyrolysis unit (2), the vertical furnace pyrolysis unit (2) being used for pyrolyzing the green pellets into hot pellets;
the cold burden batching unit (3), the cold burden batching unit (3) is used for configuring quicklime blocks;
a hot charging and hot conveying unit (4), wherein the hot charging and hot conveying unit (4) is used for conveying hot pellets;
the calcium carbide furnace unit (5), the calcium carbide furnace unit (5) is used for smelting the hot pellets and quicklime blocks to generate calcium carbide;
the discharge gate of mixing shaping unit (1) with the pan feeding mouth of vertical stove pyrolysis unit (2) is connected, the discharge gate of vertical stove pyrolysis unit (2) with the discharge gate of cold burden batching unit (3) all with hot charge heat is sent unit (4) to connect, the heat charge heat send the delivery port of unit (4) with carbide stove unit (5) are connected.
2. The system for producing calcium carbide of claim 1, wherein the mixing and forming unit (1) comprises a first stirring device (11), a second stirring device (12) and a ball pressing and forming device (13), the first stirring device (11) is provided with a first feeding port and a first discharging port, the second stirring device (12) is provided with a second feeding port and a second discharging port, the ball pressing and forming device (13) is provided with a third feeding port and a third discharging port, the first discharging port is connected with the second feeding port, and the second discharging port is connected with the third feeding port.
3. The system for producing calcium carbide according to claim 1, wherein the vertical furnace pyrolysis unit (2) comprises a vertical furnace (21), a carbonization chamber is arranged in the vertical furnace (21), the middle part of the carbonization chamber is a carbonization section, the green pellets are carbonized in the carbonization section to form hot pellets, a material pushing device for pushing the hot pellets is arranged at the lower part of the carbonization chamber, and a material receiving bin is correspondingly arranged at the outlet of the material pushing device on the hot charging and hot conveying unit (4).
4. The system for producing calcium carbide of claim 3, wherein the temperature of the dry distillation section is 750 ℃.
5. The system for producing calcium carbide of claim 3, wherein a weighing sensor is disposed in the material receiving bin.
6. The system for producing calcium carbide of claim 1, further comprising a gas purification system (22), wherein the gas purification system (22) is used for purifying the pyrolyzed gas to obtain purified gas, coal tar and crude benzene.
7. The system for producing calcium carbide according to claim 1, wherein the hot charging and hot conveying unit (4) is a high temperature resistant conveying device, and the high temperature resistant conveying device is protected by nitrogen charging and sealed.
8. The system for producing calcium carbide according to claim 7, wherein the cold burden distribution unit (3) comprises a bin (31), quicklime blocks are placed in the bin (31), and a discharge port of the bin corresponds to the high temperature resistant conveying equipment.
9. The system for producing calcium carbide of claim 7, wherein the calcium carbide furnace unit (5) comprises a sealed calcium carbide furnace (51) and a furnace gas purification and post-treatment system (52), the furnace gas purification and post-treatment system (52) is used for purifying furnace gas, the sealed calcium carbide furnace is provided with a furnace inlet and a furnace outlet, the furnace inlet is connected with the high temperature resistant conveying equipment, and the furnace outlet is provided with a furnace outlet.
10. The system for producing calcium carbide of claim 9, further comprising a hoist for pulling the tapping car to a factory for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920315007.0U CN209922906U (en) | 2019-03-13 | 2019-03-13 | System for production carbide |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920315007.0U CN209922906U (en) | 2019-03-13 | 2019-03-13 | System for production carbide |
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| CN209922906U true CN209922906U (en) | 2020-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116443879A (en) * | 2023-06-19 | 2023-07-18 | 北京绿清科技有限公司 | Calcium carbide production method and production system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116443879A (en) * | 2023-06-19 | 2023-07-18 | 北京绿清科技有限公司 | Calcium carbide production method and production system |
| CN116443879B (en) * | 2023-06-19 | 2023-08-25 | 北京绿清科技有限公司 | Calcium carbide production method and production system |
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Address after: 100027 Room 502, unit 4, 5 / F, building 39, Xingfu Er village, Chaoyang District, Beijing Patentee after: Beijing daosike mining equipment Technology Co.,Ltd. Address before: 100027 Room 502, unit 4, 5 / F, building 39, Xingfu Er village, Chaoyang District, Beijing Patentee before: BEIJING SHUANGLING MINE EQUIPMENT TECHNOLOGY Co.,Ltd. |
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