CN114644945A - Dust removal system and dust removal process method for preparing acetylene by using wet calcium carbide - Google Patents
Dust removal system and dust removal process method for preparing acetylene by using wet calcium carbide Download PDFInfo
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- CN114644945A CN114644945A CN202210347547.3A CN202210347547A CN114644945A CN 114644945 A CN114644945 A CN 114644945A CN 202210347547 A CN202210347547 A CN 202210347547A CN 114644945 A CN114644945 A CN 114644945A
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10H—PRODUCTION OF ACETYLENE BY WET METHODS
- C10H21/00—Details of acetylene generators; Accessory equipment for, or features of, the wet production of acetylene
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Abstract
The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide, which relate to the technical field of calcium carbide dust safety and environmental protection digestion, and the dust removal system for preparing acetylene by using wet calcium carbide comprises a dust fan cover system, a conveying pipeline system, a gas protection system, a dust material cleaning system, a dust material collecting system, a control system, an emptying system and a fireproof system; the output end of the dust fan cover system is connected with the conveying pipeline system; the dust material cleaning system is used for cleaning calcium carbide dust in the conveying pipeline system; the dust collecting system is arranged at the tail end of the conveying pipeline system; the emptying system is used for discharging acetylene gas in the conveying pipeline system, and the low-walking high-climbing wave type conveying pipeline design concept with a brand-new concept is adopted, so that dust can be effectively shunted in the conveying process, the dust content of the conveying system is reduced, and the efficient operation of the system is kept.
Description
Technical Field
The invention relates to the technical field of calcium carbide dust safe and environment-friendly digestion, in particular to a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide.
Background
In the chemical industry production process, the preparation technology of acetylene is divided into dry process and wet process, and the carbide dust is removed as ordinary dust by the existing enterprises mostly, although explosion-proof has also been considered, all risks are all introduced into the dust remover by this kind of operation, and in case the dust remover explodes, the dust in the dust remover cavity is all dissipated, causes the high concentration injury in short-term to the environment. The dust removal has the following characteristics: dust collected by a dust removal system can have a significant amount of dust falling into the pipeline after the system is shut down. Although the pipeline has a certain gradient, the dust particles are small, and a large amount of dust falls into the pipeline. After the system is stopped, moisture in the air is easy to combine with the retained dust to generate Ca (OH)2Forming a paste, which is further mixed with CO2After the reaction, CaCO is formed3And water is further reacted with the calcium carbide dust, and the steps are repeated. CaCO3The amount of the air which is attached to the surface and dried is larger and larger, the burden of an air pipe support hanger is further increased after the wind resistance is increased, and even the accident that people are injured by falling of the air pipe possibly occurs. Because of the ramp design of the existing dust removal system, the inlet position of the dust removal system is the low point of the main pipeline, and the byproduct acetylene gas is smaller than air 29 due to the molecular weight of 26, can be enriched in the pipeline and concentrated to a high place and cannot be discharged outside, and the acetylene gas enriched in the pipeline is more and more along with the extension of the parking time. Has great potential safety hazard. If there is a spark in the environment, it may even beAn explosion accident occurs. At present, no special dust removal system for calcium carbide dust in a pipeline exists in China, so that a pipeline dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide are urgently needed to be designed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects in the prior art are overcome, the dust removal system for preparing acetylene by using wet calcium carbide is provided, and the defect that calcium carbide dust in a pipeline cannot be removed in the prior art is overcome.
In order to solve the problems, the invention adopts the technical scheme that:
a dust removal system for preparing acetylene by using wet calcium carbide comprises a dust collection branch system, a conveying pipeline system, a gas protection system, a dust cleaning system, a dust collecting system, a control system, an emptying system and a fire prevention system; the output end of the dust collection branch system is connected with the conveying pipeline system; used for collecting calcium carbide dust; the conveying pipeline system is used for conveying gas containing calcium carbide dust; the gas protection system is used for replacing acetylene gas in calcium carbide dust-containing gas in the conveying pipeline system with inert gas; the dust material cleaning system is used for cleaning calcium carbide dust in the conveying pipeline system; the dust collecting system is arranged at the tail end of the conveying pipeline system; the evacuation system is used for evacuating acetylene gas in the conveying pipeline system, the fire protection system is arranged at the tail end of the conveying pipeline system, and the fire protection system is used for preventing open fire from entering the dust and material collecting system; the control ends of the dust collection branch system, the conveying pipeline system, the gas protection system, the dust cleaning system, the dust collection system, the emptying system and the fire protection system are respectively electrically connected with the control system.
According to a further preferred technical scheme, the conveying pipeline system comprises a first conveying pipeline, a second conveying pipeline and a third conveying pipeline, the first conveying pipeline, the second conveying pipeline and the third conveying pipeline are respectively in multiple groups, the first conveying pipeline is a downhill pipeline, the gradient of the first conveying pipeline is less than or equal to 30 degrees, the second conveying pipeline is an uphill pipeline, the gradient of the second conveying pipeline is greater than or equal to 45 degrees, the third conveying pipeline is of a double-elbow structure connected end to end, the high end of the first conveying pipeline and the high end of the second conveying pipeline are in transitional connection through the third conveying pipeline, and the low end of the first conveying pipeline and the low end of the second conveying pipeline are in elbow transitional connection.
Preferably, the low point junction of first pipeline and second pipeline is equipped with the dust collection mouth, the dust collection mouth is connected with dirt material collection system, dust collection mouth department is equipped with detection switch, detection switch is used for control the switching of dust collection mouth, detection switch and control system electric connection.
Preferably, the high point junction of first pipeline and second pipeline is equipped with the drain, the drain outside is equipped with the spark arrester, the spark arrester is used for preventing the drain tempering, drain department is equipped with the valve, the valve is used for controlling the switching of drain, valve and control system electric connection.
Preferably, the dust cleaning system comprises dust cleaning pipelines and a valve control assembly, the dust cleaning pipelines are provided with a plurality of groups, the dust cleaning pipelines are vertically inserted into the pipelines of the conveying pipeline system, and the plurality of groups of dust cleaning pipelines are uniformly distributed in each section of the pipelines of the conveying pipeline system.
Preferably, the dust material cleaning system comprises a dust material blowing pipeline, the dust material blowing pipeline is arranged inside the pipeline of the conveying pipeline system, and a plurality of blowing holes are formed in the dust material blowing pipeline.
Preferably, the dust cleaning system is an inert gas cleaning system.
Preferably, the dust absorption tributary system contains a plurality of dust absorption bleeder, a plurality of the one end of dust absorption bleeder is link up respectively in proper order and states pipeline system, the other end and the fan housing of dust absorption bleeder are connected, the interface that dust absorption bleeder is connected with the fan housing is single interface or is double-interface or be three interfaces, the dust absorption bleeder with pipeline system's access angle is less than or equal to 30, pipeline system with dust absorption bleeder junction is reducing structure, pipeline system is greater than the pipe diameter before the access at the pipe diameter that inserts dust absorption bleeder rear end.
Preferably, the control system adopts a DCS control system or a PLC controller system.
Preferably, the dust collection branch system and the pipeline of the conveying pipeline system can adopt welded connection or flange connection.
Preferably, the dust collecting system comprises a storage bin and a dust remover, and fire valves are additionally arranged at the storage bin and the dust remover, so that a fire source is effectively isolated, and the safety is enhanced.
Preferably, the dust remover adopts an explosion-proof facility and inert gas injection, so that the safety risk is further reduced.
Preferably, the conveying pipeline system further comprises a fixing bracket, and the fixing bracket is used for fixing the first conveying pipeline, the second conveying pipeline and the third conveying pipeline.
A dust removal process method of a dust removal system for preparing acetylene by using wet calcium carbide comprises the following steps:
before the system is started, an emptying system is controlled to be started through a control system, acetylene in a conveying pipeline system is discharged to the atmosphere or an acetylene recovery pipeline through the emptying system, and the emptying system is closed after the emptying system works for a period of time and no acetylene gas exists in the conveying pipeline system;
b, controlling a gas protection system to start through a control system, emptying air in the system by utilizing the negative pressure action of the gas protection system, starting a dust cleaning system through the control system after a period of time, replacing the air in the system through inert gas, and closing the dust cleaning system after the air replacement is qualified;
and c, in the running process of the system, the high-level material level sensing of the unloading system starts the unloading and unloading conveying system, the low-level material level sensing closes the unloading valve, and meanwhile, the unloading conveying system is delayed, so that no dust materials exist in the conveying system.
D, before the system stops, conveying the dust to a low point or the tail end of the conveying pipeline along the conveying pipeline system through an inert gas protection system; and c, automatically opening the dust material conveying system according to the step c, gradually cleaning the dust material in the conveying pipeline system in a segmented manner by the automatic control dust material cleaning system, collecting and transferring the dust material by the dust material collecting system, cleaning for a period of time until no dust powder or dust exists in the conveying pipeline system, and closing the dust material cleaning system and the gas protection system again.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide, which adopt a design concept of a low-walking high-climbing wave type conveying pipeline with a brand new concept, can effectively shunt dust in the conveying process, reduce the dust content of the conveying system and keep the efficient operation of the system.
2. The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide.
3. The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide, and designs an emptying system.
4. The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide.
5. The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide.
6. The invention provides a dust removal system and a dust removal process method for preparing acetylene by using wet calcium carbide, wherein a control system is controlled by a DCS (distributed control system) or a PLC (programmable logic controller) system, so that the control system has strong maneuverability.
Drawings
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic view of a third pipeline of the present invention
FIG. 4 is a schematic top view of a third pipeline according to the present invention;
FIG. 5 is an enlarged schematic view of the blowing pipe according to the present invention;
FIG. 6 is a schematic view showing the type of branch dust suction pipe according to the present invention;
fig. 7 is a schematic diagram of the electrical principle of the present invention.
In the figure: 1. dust absorption branch system, 11, dust absorption branch pipe, 2, pipeline system, 21, first pipeline, 22, second pipeline, 23, dust collecting opening, 24, detection switch, 25, drain, 26, valve, 27, third pipeline, 28, flame arrester, 3, gas protection system, 4, dust material cleaning system, 41, dust material cleaning pipeline, 42, valve control assembly, 43, blowing pipeline, 44, blowing hole, 5, dust material collecting system, 6, control system, 7, emptying system, 8, fire protection system.
Detailed Description
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "first", "second", "middle end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any part or element in the present disclosure, and are not to be construed as limiting the present disclosure.
The following embodiments are described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
Example one
As shown in fig. 1 to 7, the dust removal system for preparing acetylene by using wet calcium carbide comprises a dust collection branch system 1, a conveying pipeline system 2, a gas protection system 3, a dust cleaning system 4, a dust collection system 5, a control system 6, an evacuation system 7 and a fire prevention system 8; the output end of the dust collection branch system 1 is connected with the conveying pipeline system 2; the device is used for collecting calcium carbide dust of the crusher; the conveying pipeline system 2 is used for conveying gas containing calcium carbide dust; the gas protection system 3 is used for replacing acetylene gas in calcium carbide dust gas in the conveying pipeline system 2 with inert gas; the dust material cleaning system 4 is used for cleaning calcium carbide dust in the conveying pipeline system 2; the dust and material collecting system 5 is arranged at the tail end of the conveying pipeline system 2; emptying system 7 is used for discharging the acetylene gas in the pipeline system 2, fire protection system 8 is used for preventing the naked light from getting into dirt material collecting system 5, dust absorption branch system 1, pipeline system 2, gas protection system 3, dirt material cleaning system 4, dirt material collecting system 5, emptying system 7, fire protection system 8's control end respectively with control system 6 electric connection.
As shown in fig. 3 and 4, the conveying pipeline system 2 includes a first conveying pipeline 21, a second conveying pipeline 22, and a third conveying pipeline 27, the first conveying pipeline 21, the second conveying pipeline 22, and the third conveying pipeline 27 are respectively provided in multiple groups, the first conveying pipeline 21 is a downhill pipeline, the gradient of the first conveying pipeline 21 is not more than 30 °, the second conveying pipeline 22 is an uphill pipeline, the gradient of the second conveying pipeline 22 is not less than 45 °, the third pipeline 27 is a double-elbow structure connected end to end, the high end of the first conveying pipeline 21 and the high end of the second conveying pipeline 22 are in transition connection through the third pipeline 27, and the low end of the first conveying pipeline 21 and the low end of the second conveying pipeline 22 are in transition connection through an elbow. In the prior art, the gradient of a pipeline generally cannot exceed 15 degrees, and because pipeline transportation is too long, long-distance transportation at an inclination angle not less than 30 degrees can cause a high starting point of a transportation system, the embodiment of the invention adopts a wave-type pipeline mode for transportation, the inclination angle not less than 45 degrees is adopted when waves go up a slope, and the inclination angle not more than 30 degrees is adopted when the waves go down the slope. The dust accumulation on the conveying pipeline can be effectively reduced. In the embodiment of the invention, when the calcium carbide dust touches an uphill slope in the conveying process, the inclination angle of not less than 45 degrees is adopted, the air containing the calcium carbide dust can flap on an uphill pipeline, and then part of the dust can slide into the dust collecting opening 23 at a low point, and the dust collecting opening 23 is connected with a dust collecting system to collect and convey the calcium carbide dust to a treatment station. The invention adopts a low-walking-climbing concept with a brand new concept, can effectively shunt dust in the conveying process, reduces the dust content of a conveying system and keeps the efficient operation of the system. In the embodiment of the present invention, the high-point joints of the first conveying pipeline 21 and the second conveying pipeline 22 are connected by a third conveying pipeline 27, the third conveying pipeline 27 is of two elbow structures connected end to end, and by the connection and conversion of the third conveying pipeline 27, the first conveying pipeline 21 and the second conveying pipeline 22 may not be in a vertical plane, so that the angle between the first conveying pipeline 21 and the second conveying pipeline 22 can be conveniently adjusted. The inclination angle of the first conveying pipeline is not more than 30 degrees, the inclination angle of the second conveying pipeline 22 is not less than 45 degrees, according to the pipeline height requirement and the pipeline wind resistance calculation, the optimal value of the inclination angle of the first conveying pipeline 21 is 30 degrees, the optimal value of the inclination angle of the second conveying pipeline 22 is 60 degrees, a 90-degree elbow is directly adopted between the first conveying pipeline 21 and the second conveying pipeline 22, and the inclination angles of the first conveying pipeline 21 and the second conveying pipeline 22 cannot be controlled, so that the invention adopts the third conveying pipeline 27 with double elbows additionally arranged between the first conveying pipeline 21 and the second conveying pipeline 22, the first conveying pipeline 21 and the second conveying pipeline 22 are not in the same vertical section, a three-dimensional turning design is formed at the joint, the angle between the first conveying pipeline 21 and the second conveying pipeline 22 is easier to control, the arrangement is not only limited to 90-degree elbow setting, under the design requirement of ensuring the minimum wind resistance, the inclination angle between the first conveying pipeline 21 and the second conveying pipeline 22 can be freely designed, and the application scenes of a plurality of ramp lengths can be adapted.
The low point department of first pipeline 21 and second pipeline 22 junction is equipped with dirt mouth 23, dirt mouth 23 is connected with dirt material collecting system 5, dirt mouth 23 department is equipped with detection switch 24, detection switch 24 is used for control the switching of dirt mouth 23, detection switch 24 and control system 6 electric connection or be wireless communication connection. In the embodiment of the present invention, the detection switch 24 detects that the dust is accumulated to a certain level or storage amount through the low-point dust collection port 23, and then starts the output system to transmit the dust to the dust collection system 5. And after the storage amount is not detected, closing the material conveying system at certain intervals.
As shown in fig. 1, a vent 25 is arranged at a high point of a joint of the first conveying pipeline 21 and the second conveying pipeline 22, the vent 25 is connected with the evacuation system 7, a valve 26 and a flame arrester 28 are arranged at the vent 25, the valve 26 is used for controlling the opening and closing of the vent 25, and the valve 26 is electrically connected with the control system 6 or is in wireless communication connection with the control system.
The dust cleaning system 4 comprises dust cleaning pipelines 41 and a valve control assembly 42, wherein the dust cleaning pipelines 41 are provided with a plurality of groups, the dust cleaning pipelines 41 are vertically inserted into the pipelines of the conveying pipeline system 2, and the plurality of groups of dust cleaning pipelines 41 are uniformly distributed in each section of the pipelines of the conveying pipeline system 2. In the embodiment of the invention, the cleaning pipelines of the dust cleaning system 4 are arranged vertically to the pipelines of the output pipeline system 2, the dust cleaning pipelines 41 are vertically inserted into the conveying pipelines, and are provided with a plurality of groups which are distributed in each section of the conveying pipelines to clean dust of each section, and the dust cleaning system 4 adopts inert gas to clean, so that the safe and reliable operation of the dust removing system is ensured. According to the inert gas dust cleaning system 4 provided by the embodiment of the invention, the dust cleaning system 4 is opened step by step from far to near according to the distance from the tail end dust remover, one or a group of valves are opened once, dust is blown to be separated from the bottom of the pipe and then is brought into the low point of the system by the wind of the system, the tail end dust remover can effectively sweep the dust attached to the pipe wall through the system, and the dust is brought into the low point of the system and the dust remover by the airflow of the conveying system. After the system is shut down, a large amount of calcium carbide dust piles exist in the pipeline, and the pipeline is usually cleaned at intervals. The system can discharge the calcium carbide powder to the maximum extent when the vehicle is stopped every time, no dust is accumulated, and the risk of calcium carbide dust accumulation is reduced.
Dust absorption tributary system 1 contains a plurality of dust absorption bleeder 11, a plurality of the one end of dust absorption bleeder 11 link up respectively in proper order and states pipeline system 2, the other end and the fan housing of dust absorption bleeder 11 are connected, the interface that dust absorption bleeder 11 and fan housing are connected is single interface or for double-interface or for three interfaces, dust absorption bleeder 11 with pipeline system 2's access angle is less than or equal to 30, pipeline system 2 with the 11 junctions of dust absorption bleeder are reducing structure, pipeline system 2 is greater than the pipe diameter before the access at the pipe diameter that inserts dust absorption bleeder 11 rear end. The conveying pipeline 2 in the embodiment of the invention adopts the reducing structure, so that the design requirement of air suction volume is met, the construction cost can be reduced, and the practicability is very strong. In the embodiment of the invention, the reducing structure of the conveying pipeline 2 adopts a conical transition structure, so that the accumulation of calcium carbide dust can be reduced to the maximum extent. The dust collection branch pipe 11 is connected to the conveying pipeline system 2 at the position of the reducing structure, and the angle of the dust collection branch pipe system 1 connected to the conveying pipeline system 2 is smaller than or equal to 30 degrees.
And the control system 6 adopts a DCS control system or a PLC controller system.
Example two
As shown in fig. 2 to 7, the dust removal system for preparing acetylene by using wet calcium carbide comprises a dust collection branch system 1, a conveying pipeline system 2, a gas protection system 3, a dust cleaning system 4, a dust collecting system 5, a control system 6, an emptying system 7 and a fire prevention system; the output end of the dust collection branch system 1 is connected with the conveying pipeline system 2; used for collecting calcium carbide dust of the crusher; the conveying pipeline system 2 is used for conveying gas containing calcium carbide dust; the gas protection system 3 is used for replacing the calcium carbide dust-containing gas in the conveying pipeline system 2 with the atmosphere; the dust material cleaning system 4 is used for cleaning calcium carbide dust in the conveying pipeline system 2; the dust collecting system 5 is arranged at the tail end of the conveying pipeline system 2; the emptying system 7 is used for discharging acetylene gas in the conveying pipeline system 2, and the control ends of the dust collection branch system 1, the conveying pipeline system 2, the gas protection system 3, the dust material cleaning system 4, the dust material collecting system 5, the emptying system 7 and the fire protection system 8 are respectively electrically connected with the control system 6.
As shown in fig. 3 and 4, the conveying pipeline system 2 includes a first conveying pipeline 21, a second conveying pipeline 22, and a third conveying pipeline 27, the first conveying pipeline 21, the second conveying pipeline 22, and the third conveying pipeline 27 are respectively provided in multiple groups, the first conveying pipeline 21 is a downhill pipeline, the gradient of the first conveying pipeline 21 is not more than 30 °, the second conveying pipeline 22 is an uphill pipeline, the gradient of the second conveying pipeline 22 is not less than 45 °, the third pipeline 27 is a double-elbow structure connected end to end, the high end of the first conveying pipeline 21 and the high end of the second conveying pipeline 22 are in transition connection through the third pipeline 27, and the low end of the first conveying pipeline 21 and the low end of the second conveying pipeline 22 are in transition connection through an elbow. In the prior art, the gradient of a pipeline generally cannot exceed 15 degrees, and because pipeline transportation is too long, long-distance transportation at an inclination angle not less than 30 degrees can cause a high starting point of a transportation system, the embodiment of the invention adopts a wave-type pipeline mode for transportation, the inclination angle not less than 45 degrees is adopted when waves go up a slope, and the inclination angle not more than 30 degrees is adopted when the waves go down the slope. The dust accumulation on the conveying pipeline can be effectively reduced. In the embodiment of the invention, when the calcium carbide dust touches an uphill slope in the conveying process, an inclination angle of not less than 45 degrees is adopted, air containing the calcium carbide dust can flap on an uphill pipeline, and then part of the dust can slide into a dust collecting port 23 at a low point, and the dust collecting port 23 is connected with a dust collecting system to collect and convey the calcium carbide dust to a treatment station. The invention adopts a low-walking-climbing concept with a brand new concept, can effectively shunt dust in the conveying process, reduces the dust content of a conveying system and keeps the efficient operation of the system. In the embodiment of the present invention, the high-point joints of the first conveying pipeline 21 and the second conveying pipeline 22 are connected by a third conveying pipeline 27, the third conveying pipeline 27 is of two elbow structures connected end to end, and by the connection conversion of the third conveying pipeline 27, the first conveying pipeline 21 and the second conveying pipeline 22 may not be in a vertical plane, so that the angle between the first conveying pipeline 21 and the second conveying pipeline 22 can be conveniently adjusted. The inclination angle of the first conveying pipeline is not more than 30 degrees, the inclination angle of the second conveying pipeline 22 is not less than 45 degrees, the optimum inclination angle of the first conveying pipeline 21 is 30 degrees, the inclination angle of the second conveying pipeline 22 is 60 degrees, a 90-degree bent pipe is directly adopted between the first conveying pipeline 21 and the second conveying pipeline 22, and the inclination angles of the first conveying pipeline 21 and the second conveying pipeline 22 are not easy to control, so that the third conveying pipeline 27 with double elbows is additionally arranged between the first conveying pipeline 21 and the second conveying pipeline 22, and the angle between the first conveying pipeline 21 and the second conveying pipeline 22 is easier to control. The low-climbing concept with a brand-new concept is adopted, so that dust can be effectively shunted in the conveying process, and the dust content of a conveying system is reduced. The system is kept running efficiently.
The low point department of first pipeline 21 and second pipeline 22 junction is equipped with collection dirt mouth 23, collection dirt mouth 23 is connected with dirt material collecting system 5, collection dirt mouth 23 department is equipped with detection switch 24, detection switch 24 is used for control the switching of collection dirt mouth 23, detection switch 24 and control system 6 electric connection or be wireless communication connection.
The high point department of first pipeline 21 and second pipeline 22 junction is equipped with drain 25, drain 25 connects exhaust system 7, drain 25 department is equipped with valve 26 and spark arrester 28, valve 26 is used for controlling the switching of drain 25, valve 26 and control system 6 electric connection or be wireless communication connection.
The dust cleaning system 4 comprises a dust blowing pipeline 43, the dust blowing pipeline 43 is arranged in the pipeline of the conveying pipeline system 2, and a plurality of blowing holes 44 are arranged on the dust blowing pipeline 43. In the embodiment of the invention, the dust attached to the pipe wall can be effectively swept by the dust cleaning system 4, and the calcium carbide dust is brought to a low point or a tail end dust remover of the dust removal system by the airflow in the conveying pipeline system 2. The system provided by the embodiment of the invention can effectively solve the problem that calcium carbide dust in the dust removal pipeline system is accumulated after the system is stopped, and effectively reduces the safe operation risk of the dust removal system.
The dust cleaning system 4 is an inert gas cleaning system.
As shown in fig. 6, the dust collection branch system 1 includes a plurality of dust collection branch pipes 11, a plurality of one ends of the dust collection branch pipes 11 are respectively and sequentially connected to the conveying pipe system 2, the other ends of the dust collection branch pipes 11 are connected to the belt sealing cover, the interface between the dust collection branch pipes 11 and the fan cover is a single interface, a double interface or a triple interface, the connection angle between the dust collection branch pipe 11 and the conveying pipe system 2 is not more than 30 °, the connection position between the conveying pipe system 2 and the dust collection branch pipe 11 is of a reducing structure, and the pipe diameter of the rear end of the conveying pipe system 2 connected to the dust collection branch pipe 11 is larger than the pipe diameter before connection. The conveying pipeline 2 in the embodiment of the invention adopts the reducing structure, so that the design requirement of air suction volume is met, the construction cost can be reduced, and the practicability is very strong. In the embodiment of the invention, the reducing structure of the conveying pipeline 2 adopts a conical transition structure, so that the accumulation of the calcium carbide dust can be reduced to the maximum extent. The branch dust collection pipe 11 is connected to the conveying pipeline system 2 at the position of the reducing structure, and the angle of the branch dust collection pipe 1 connected to the conveying pipeline system 2 is less than or equal to 30 degrees. In the implementation process of the embodiment of the invention, the branched dust absorption pipe 11 can be connected with a sealing cover of a conveying belt and can also be connected with an air suction opening of closed equipment such as a storage bin, a bucket elevator and the like, and a fire damper is additionally arranged at an air suction inlet of equipment similar to the sealing cover to prevent flame from entering the dust removal system. The system can be connected with the air suction holes of sealing equipment such as a belt sealing cover, a storage bin, a bucket elevator and the like by adopting soft connection or hard connection. Valves are additionally arranged at the joints of the dust absorption branch pipes 11 and the conveying pipeline system, the valves can adopt regulating valves, and the dust absorption branch pipes 11 are linked with the pressure of the main pipe of the conveying pipeline system 2, and can also adopt common manual valves. In the embodiment of the present invention, a vent 23 is provided at the high point where the branched dust suction pipe 11 is connected to the conveying pipe system 2.
And the control system 6 adopts a DCS control system or a PLC controller system.
In a preferred embodiment of the invention, the dust collection branch system and the pipeline of the conveying pipeline system can be connected by welding or flanges, and can meet different pipeline connection requirements.
Preferably, the dust collecting system comprises a storage bin and a dust remover, and fire valves are additionally arranged at the storage bin and the dust remover, so that a fire source is effectively isolated, and the safety is enhanced.
Preferably, the dust remover adopts an explosion-proof facility and inert gas injection, so that the safety risk is further reduced.
Preferably, the conveying pipeline system further comprises a fixing bracket, and the fixing bracket is used for fixing the first conveying pipeline, the second conveying pipeline and the third conveying pipeline.
A dust removal process method of a dust removal system for preparing acetylene by using wet calcium carbide comprises the following steps:
step a, before the system is started, an emptying system 7 is controlled to be started through a control system 6, acetylene in a conveying pipeline system 2 is discharged to the atmosphere or an acetylene recovery pipeline through the emptying system 7, and after the emptying system 7 works for a period of time and no acetylene gas exists in the conveying pipeline system 2, the emptying system 7 is closed;
b, controlling a gas protection system 3 to start through a control system 6, wherein the gas protection system 3 is used for replacing acetylene gas in calcium carbide dust-containing gas in the conveying pipeline system 2 with inert gas; after a period of time, the dust material cleaning system 4 is started through the control system 6, air in the system is replaced through inert gas, and the dust material cleaning system 4 is closed after the air replacement is qualified;
c, in the operation process of the system, when the detection switch 24 detects a high material level at the dust collection port 23, automatically controlling to open a valve for discharging, conveying the collected dust materials through the dust material collection system 5, and when a low material level at the dust collection port 23, automatically controlling to close a discharge valve, and delaying to discharge the conveying system at the same time to ensure that no dust materials exist in the conveying pipeline system 2;
d, before the system stops, starting the gas protection system 3, and conveying the dust to the low point or the tail end of the conveying pipeline along the conveying pipeline system 2 through the gas protection system 3; and c, automatically starting the dust material collecting system 5 according to the step c, gradually cleaning the dust materials in the conveying pipeline system 2 in a segmented manner by automatically controlling the dust material cleaning system 4, collecting and transferring the dust materials by the dust material collecting system 5, cleaning the dust materials for a period of time until no dust powder or dust exists in the conveying pipeline system, and then sequentially closing the dust material cleaning system 4 and the gas protection system 3.
It is to be understood that the above-described embodiments are not intended to limit the present invention, and the present invention is not limited to the above-described examples, and those skilled in the art may make variations, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A dust pelletizing system of wet process carbide preparation acetylene which characterized in that:
the dust removal system comprises a dust collection branch system (1), a conveying pipeline system (2), a gas protection system (3), a dust cleaning system (4), a dust collection system (5), a control system (6), an emptying system (7) and a fire protection system (8); the output end of the dust collection branch system (1) is connected with the conveying pipeline system (2); used for collecting calcium carbide dust; the conveying pipeline system (2) is used for conveying gas containing calcium carbide dust; the gas protection system (3) is used for replacing acetylene gas in calcium carbide dust-containing gas in the conveying pipeline system (2) with inert gas; the dust material cleaning system (4) is used for cleaning calcium carbide dust in the conveying pipeline system (2); the dust collecting system (5) is arranged at the tail end of the conveying pipeline system (2); the emptying system (7) is used for emptying acetylene gas in the conveying pipeline system (2), the fireproof system (8) is arranged at the tail end of the conveying pipeline system (2), and the fireproof system (8) is used for preventing open fire from entering the dust and material collecting system (5); the control ends of the dust collection branch system (1), the conveying pipeline system (2), the gas protection system (3), the dust material cleaning system (4), the dust material collecting system (5), the emptying system (7) and the fire protection system (8) are respectively electrically connected with the control system (6).
2. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 1, wherein the dust removal system comprises:
the conveying pipeline system (2) comprises a first conveying pipeline (21), a second conveying pipeline (22) and a third conveying pipeline (27), the first conveying pipeline (21), the second conveying pipeline (22) and the third conveying pipeline (27) are respectively in multiple groups, the first conveying pipeline (21) is a downhill pipeline, the gradient of the first conveying pipeline (21) is less than or equal to 30 degrees, the second conveying pipeline (22) is an uphill pipeline, the gradient of the second conveying pipeline (22) is greater than or equal to 45 degrees, the third pipeline (27) is in a double-elbow structure connected end to end, the high end of the first conveying pipeline (21) and the high end of the second conveying pipeline (22) are in transitional connection through the third pipeline (27), and the low end of the first conveying pipeline (21) and the low end of the second conveying pipeline (22) are in elbow transitional connection.
3. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 2, wherein the dust removal system comprises:
the low point junction of first pipeline (21) and second pipeline (22) is equipped with collection dirt mouth (23), collection dirt mouth (23) are connected with dirt material collecting system (5), collection dirt mouth (23) department is equipped with detection switch (24), detection switch (24) are used for control the switching of collection dirt mouth (23), detection switch (24) and control system (6) electric connection or be wireless communication connection.
4. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 2, wherein:
the high point junction of first pipeline (21) and second pipeline (22) is equipped with drain (25), the drain (25) outside is equipped with spark arrester (28), spark arrester (28) are used for preventing drain (25) tempering, drain (25) department is equipped with valve (26), valve (26) are used for controlling the switching of drain (25), valve (26) and control system (6) electric connection or be wireless communication connection.
5. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 1, wherein the dust removal system comprises:
the dust cleaning system (4) comprises a dust cleaning pipeline (41) and a valve control assembly (42), wherein the dust cleaning pipeline (41) is provided with a plurality of groups, the dust cleaning pipeline (41) is vertically inserted into the pipeline of the conveying pipeline system (2), and the dust cleaning pipelines (41) are uniformly distributed in all sections of the pipeline of the conveying pipeline system (2).
6. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 1, wherein the dust removal system comprises:
the dust cleaning system (4) comprises a dust blowing pipeline (43), the dust blowing pipeline (43) is arranged inside the pipeline of the conveying pipeline system (2), and a plurality of blowing holes (44) are formed in the dust blowing pipeline (43).
7. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 5 or 6, wherein the dust removal system comprises:
the dust material cleaning system (4) is an inert gas cleaning system.
8. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 1, wherein the dust removal system comprises:
dust absorption tributary system (1) contains a plurality of dust absorption bleeder (11), a plurality of the one end of dust absorption bleeder (11) link up respectively in proper order and states pipeline system (2), the other end and the fan housing of dust absorption bleeder (11) are connected, the interface that dust absorption bleeder (11) and fan housing are connected is single interface or for two interfaces or for three interfaces, dust absorption bleeder (11) with the access angle of pipeline system (2) is less than or equal to 30 degrees, pipeline system (2) with dust absorption bleeder (11) junction is reducing structure, pipeline system (2) are greater than the pipe diameter before the access at the pipe diameter that inserts dust absorption bleeder (11) rear end.
9. The dust removal system for preparing acetylene by using wet calcium carbide as claimed in claim 1, wherein:
and the control system (6) adopts a DCS control system or a PLC controller system.
10. The dust removal process method of the dust removal system for preparing acetylene by using wet calcium carbide according to any one of claims 1 to 9, which is characterized by comprising the following steps of:
the dust removal process method comprises the following steps:
step a, before a system is started, an emptying system (7) is controlled to start through a control system (6), acetylene in a conveying pipeline system (2) is discharged to atmosphere or an acetylene recovery pipeline through the emptying system (7), and the emptying system (7) is closed after the emptying system (7) works for a period of time and no acetylene gas exists in the conveying pipeline system (2);
b, controlling a gas protection system (3) to start through a control system (6), wherein the gas protection system (3) is used for replacing acetylene gas in calcium carbide dust-containing gas in the conveying pipeline system (2) with inert gas; after a period of time, the dust cleaning system (4) is started through the control system (6), air in the system is replaced through inert gas, and the dust cleaning system (4) is closed after the air replacement is qualified;
c, in the operation process of the system, when the detection switch (24) detects a high-level material level at the dust collection port (23), automatically controlling to open a valve for discharging, conveying the collected dust materials through the dust material collection system (5), and when the detection switch (24) detects a low-level material level at the dust collection port (23), automatically controlling to close a discharge valve and simultaneously delaying to discharge the conveying system to ensure that no dust materials exist in the conveying pipeline system (2);
d, before the system stops, starting the gas protection system (3), and conveying the dust to the low point or the tail end of the conveying pipeline along the conveying pipeline system (2) through the gas protection system (3); and c, automatically starting the dust material collecting system (5) according to the step c, gradually cleaning the dust materials in the conveying pipeline system (2) in a segmented manner by automatically controlling the dust material cleaning system (4), collecting and transferring the dust materials through the dust material collecting system (5), cleaning the dust materials without powder dust in the conveying pipeline system after a period of time, and then sequentially closing the dust material cleaning system (4) and the gas protection system (3).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310572484.6A CN116765082A (en) | 2022-04-01 | 2022-04-01 | Dust removal system |
| CN202210347547.3A CN114644945B (en) | 2022-04-01 | 2022-04-01 | Dust removal system and dust removal process method for preparing acetylene by wet method calcium carbide |
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| CN202210347547.3A CN114644945B (en) | 2022-04-01 | 2022-04-01 | Dust removal system and dust removal process method for preparing acetylene by wet method calcium carbide |
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| CN202310572484.6A Division CN116765082A (en) | 2022-04-01 | 2022-04-01 | Dust removal system |
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| CN114644945B CN114644945B (en) | 2023-05-30 |
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| CN202310572484.6A Pending CN116765082A (en) | 2022-04-01 | 2022-04-01 | Dust removal system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB829542A (en) * | 1955-01-24 | 1960-03-02 | Weldcraft Ltd | Improvements in and relating to acetylene generators |
| CN101195555A (en) * | 2007-03-06 | 2008-06-11 | 新疆天业（集团）有限公司 | Acetylene generating system of dry method |
| CN203829848U (en) * | 2014-03-25 | 2014-09-17 | 肖业军 | Dust removal system device enabling dust removal concentration to be less than 15 milligrams |
| CN204162662U (en) * | 2014-05-28 | 2015-02-18 | 新疆中泰化学股份有限公司 | Modified version wet method apparatus for producing ethyne |
| CN104801422A (en) * | 2015-04-14 | 2015-07-29 | 重庆大学 | Efficient dust removal system for coal-fired flue gas |
| CN205032002U (en) * | 2015-08-26 | 2016-02-17 | 李国栋 | Acetylene gas generator carbide exhaust gas purification system for awning |
| CN210964450U (en) * | 2019-09-04 | 2020-07-10 | 海博尔净化工程有限公司 | Ventilation pipe for dust pelletizing system |
-
2022
- 2022-04-01 CN CN202210347547.3A patent/CN114644945B/en active Active
- 2022-04-01 CN CN202310572484.6A patent/CN116765082A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB829542A (en) * | 1955-01-24 | 1960-03-02 | Weldcraft Ltd | Improvements in and relating to acetylene generators |
| CN101195555A (en) * | 2007-03-06 | 2008-06-11 | 新疆天业（集团）有限公司 | Acetylene generating system of dry method |
| CN203829848U (en) * | 2014-03-25 | 2014-09-17 | 肖业军 | Dust removal system device enabling dust removal concentration to be less than 15 milligrams |
| CN204162662U (en) * | 2014-05-28 | 2015-02-18 | 新疆中泰化学股份有限公司 | Modified version wet method apparatus for producing ethyne |
| CN104801422A (en) * | 2015-04-14 | 2015-07-29 | 重庆大学 | Efficient dust removal system for coal-fired flue gas |
| CN205032002U (en) * | 2015-08-26 | 2016-02-17 | 李国栋 | Acetylene gas generator carbide exhaust gas purification system for awning |
| CN210964450U (en) * | 2019-09-04 | 2020-07-10 | 海博尔净化工程有限公司 | Ventilation pipe for dust pelletizing system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114644945B (en) | 2023-05-30 |
| CN116765082A (en) | 2023-09-19 |
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