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CN105948050A - Calcium carbide production method and system - Google Patents

Calcium carbide production method and system Download PDF

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Publication number
CN105948050A
CN105948050A CN201610530774.4A CN201610530774A CN105948050A CN 105948050 A CN105948050 A CN 105948050A CN 201610530774 A CN201610530774 A CN 201610530774A CN 105948050 A CN105948050 A CN 105948050A
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gas
unit
oil
outlet
carbide
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CN105948050B (en
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赵小楠
丁力
吴道洪
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Shenwu Environmental Technology Co Ltd
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Shenwu Environmental Technology Co Ltd
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Abstract

The invention relates to a calcium carbide production method and a calcium carbide production system. The system comprises a mixing and forming unit, a reaction furnace, a carbon-containing solid hot charging unit, an oil-gas separation unit, a gas heating furnace and a calcium carbide smelting furnace, wherein the mixing and forming unit comprises a feed opening and a discharge opening; the reaction furnace comprises a briquette inlet, a gas heat carrier inlet, an oil-gas outlet and a carbon-containing solid outlet; the oil-gas separation unit is connected with the gas heating furnace; a gas outlet of the gas heating furnace is connected with the gas heat carrier inlet of the reaction furnace; the calcium carbide smelting furnace comprises a calcium carbide raw material inlet and a calcium carbide outlet. According to the method and the system, a part of gas produced by pyrolysis is reasonably utilized, and the quality of a gas product is improved; hot charging is performed on carbon-containing solids produced by reaction, so that electric energy consumption of the calcium carbide smelting furnace is greatly reduced.

Description

The production method of a kind of Acetylenogen. and system
Technical field
The invention mainly relates to the production field of carbide, be specifically related to the production method of a kind of Acetylenogen. and be System.
Background technology
Carbide is as a kind of important industrial chemicals, mainly for the production of acetylene and ethynylation chemical product, Once " mother of organic synthesis industry " it was described as.Consider from National energy distribution, " rich coal, oil-poor, Few gas " it is the typical characteristic of China's energy resource structure, coal is the main energy sources of China, accounts for primary energy 70%, therefore, carbide produce significant for Industrial Economic Development.
Tradition carbide produces and mainly uses electrothermal way, i.e. with lump lime and block coke as raw material, In furnace of calcium carbide by electric arc heated to 2000 degree Celsius more than, by equation CaO+3C=CaC2The reaction principle of+CO Carry out pyrolytic semlting and produce carbide.From the requirement consideration to carbon raw, tradition carbide production technology is main There is following defect: (1) requires that the granularity of carbon materials is at 5-30mm, fixed carbon content > 84%, ash < 15%, it is possible to meet only coke, semicoke, petroleum coke and some high-quality anthracites of these requirements, And these raw material reserves are extremely limited, expensive;(2) can be with 15-20% in raw material shattering process Raw material due to granularity less than 5mm and go out of use, cause the serious waste of resource;(3) during carbide produces Main employing block carbon raw material and Calx, mass transfer and heat transfer efficiency are low, and reaction rate is relatively low, carbide smelting The furnace thermal efficiency is only about 50%, and power consumption is up to about 3250kWh/t carbide.Visible, carbon raw Quality directly affects the economic indicators such as the Yield and quality of carbide, electric power unit consumption and cost.
Consider from the character of raw coal, containing ash, sulfur and other a small amount of mineral in raw coal.Major part raw coal Ash be all higher than the ash requirements upper limit of carbide raw material, raw coal need to be carried out sorting deliming and process.By dividing The difference of selected introductions matter can be divided into wet split and the big class of dry separation two, and during wet split, coal fills with water Tap is touched, and increases coal selecting product moisture and the dehydration energy of follow-up carbon raw;And conventional dry separation Using normal temperature air as separating medium, the surface moisture of raw coal adds the contact between granule and adheres to several Rate, causes actual separating effect to be deteriorated.It addition, in recent years, along with carrying of Coal Mechanical recovery percent Height, raw coal fine coal content in recovery process accounts for 40-60%, and the poor low-order coal of hardness even accounts for About 70%, it is to run counter to that this obvious granularity with traditional carbide manufacturing technique requirent carbon raw is more than 5mm 's.
For solving tradition carbide production technology to ingredient requirement harshness, highly energy-consuming, high pollution, poor benefit etc. Shortcoming, widens the scope of carbide carbon back raw material, and carbide production technology is further improved.
Therefore, for the problems referred to above, it is necessary to provide production method and the system of a kind of Acetylenogen., can solve Tradition carbide production technology is to problems such as ingredient requirement harshness, highly energy-consuming, high pollution, poor benefits.
Summary of the invention
For the problems referred to above, it is desirable to provide the production method of a kind of Acetylenogen. and system, the method and The purpose of system is the waste heat waste in solution carbide production technology, highly energy-consuming problem.Further, originally Invention will solve the carbide production technology high request problem to raw material.
The production system of the Acetylenogen. that the present invention provides includes: batch mixing forming unit, reacting furnace, carbon containing are solid Body heat send unit, Oil-gas Separation unit, gas-fired heater and carbide smelting furnace, and wherein, described batch mixing becomes Type unit includes feeding mouth and discharging opening, for the molding of type ball;Described reacting furnace include type ball entrance, Gas heat carrier entrance, oil gas vent and carbonaceous solids outlet, for the pyrolysis of type ball;Described type ball enters Mouth is connected with the discharging opening of described batch mixing forming unit;The outlet of described carbonaceous solids and described carbonaceous solids heat Unit is sent to be connected;Described oil gas vent is connected with described Oil-gas Separation unit;Described Oil-gas Separation unit with Described gas-fired heater is connected;The gas outlet of described gas-fired heater carries with the air heat of described reacting furnace Body entrance is connected;Described carbide smelting furnace includes carbide raw material entrance and carbide outlet, for the smelting of carbide Refining;Described carbide raw material entrance send the outlet of unit to be connected with described carbonaceous solids heat.
Above-mentioned system may also include tar storage tank, the entrance of described tar storage tank and described Oil-gas Separation list The liquid outlet of unit is connected, and the outlet of described tar storage tank is connected with the entrance of described batch mixing forming unit.
Further, above-mentioned system may also include gas booster unit, and described gas booster unit is located at Between described Oil-gas Separation unit and described gas-fired heater.
Further, above-mentioned system may also include fragmentation cell, and described fragmentation cell is located at described batch mixing Before forming unit.
Further, described system may also include combustion gas container, described combustion gas container and described Oil-gas Separation The gas outlet of unit or be connected with the gas outlet of described gas booster unit.
The present invention also provides for a kind of production method utilizing said system to carry out Acetylenogen., comprises the following steps: By particle diameter, < coal of 2mm and Calx is first batch mixing aftershaping in described batch mixing forming unit, obtains type ball;Will Described type ball is sent into described reacting furnace and is carried out pyrolytic reaction, obtains carbonaceous solids, oil gas;By described carbon containing Solid is sent into described carbonaceous solids heat and is sent unit;Described carbonaceous solids heat is sent the carbonaceous solids in unit send Enter described carbide smelting furnace to smelt, obtain carbide;Described oil gas is sent into described Oil-gas Separation unit Carry out isolated tar and combustion gas;Heat in described combustion gas is sent into described gas-fired heater;By described Combustion gas after heating sends into described reacting furnace as gas heat carrier.
In above-mentioned method, the granularity of described type ball is 5-40 millimeter, and cold pressing strength is more than 200 Ns/.
Further, above-mentioned method further comprises the steps of: to be sent into described mixed using described tar as binding agent In material forming unit.
Further, above-mentioned method may further comprise the step of: sends a part for described combustion gas into combustion gas storage Cabinet stores.
Further, said method may further comprise the step of: and coal and Calx are crushed to below 2mm particle diameter.
According to the technique scheme of the present invention, a part of combustion gas that can pyrolysis be produced is at gas heating There is provided heat for reacting furnace after heating in stove, again the hot carbonaceous solids of part that pyrolytic process produces is carried out Hot charging, reduces the energy consumption of cracking process.
Further, the tar that pyrolysis produces also can be sent in batch mixing forming unit by the present invention as binding agent Carry out the mixed-forming of carbide raw material, improve ratio of briquetting and the type ball intensity of powder, solve carbide raw The production. art particular/special requirement to raw material, has accomplished recycling of resource, energy-conserving and environment-protective simultaneously, has had relatively High environmental economical profit.
Accompanying drawing explanation
Fig. 1 is the operation system structure schematic diagram of the Acetylenogen. of the embodiment of the present invention;
Fig. 2 is the production system flow chart of the Acetylenogen. of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the detailed description of the invention of the present invention is described in more details, So as to the advantage being more fully understood that the solution of the present invention and various aspects.But, described below Detailed description of the invention and embodiment are only descriptive purpose rather than limitation of the present invention.
The production system sketch of the Acetylenogen. that Fig. 1 provides for the present invention.
This system includes that raw material cabin 1, fragmentation cell 2, batch mixing forming unit 3, reacting furnace 4, carbon containing are solid Body heat send unit 5, Oil-gas Separation unit 6, gas booster unit 7, gas-fired heater 8, combustion gas container 9, Tar storage tank 10, carbide smelting furnace 11, wherein, raw material cabin 1, fragmentation cell 2, gas booster unit 7, Combustion gas container 9, tar storage tank 10 are not necessary to arrange.
Concrete, raw material cabin 1 is used for holding carbide raw material;Fragmentation cell 2 includes breaker, is used for Crushing of raw material, its entrance is connected with the outlet of raw material cabin 1.Batch mixing forming unit 3 include batch mixer with Forming machine, is provided with feeding mouth and discharging opening, for the molding of type ball.After coal and the effective molding of Calx, The type ball formed has preferable intensity, heat stability, to rear profile ball the deep processing such as pyrolytic gasification or Use has preferable facilitation.Additionally, the volatile matter dust when effusion in pyrolytic process also can be reduced Carry secretly, and then improve pyrolysis oil, the quality of gas product.
Reacting furnace 4 is vertical reacting furnace, including type ball entrance, gas heat carrier entrance, oil gas vent and Carbonaceous solids exports, for the pyrolysis of type ball.The shaft of vertical reacting furnace is upright, furnace gas in stove upwards Motion, and in countercurrent flow between furnace charge, this is advantageous for the mass-and heat-transfer between material.Most shaft furnaces Furnace charge directly contact with fuel.The structure of general furnace roof, has unlimited and airtight two kinds.
Wherein, the type ball entrance of reacting furnace 4 is connected with the discharging opening of batch mixing forming unit 3;Described carbon containing Solid outlet send unit to be connected with described carbonaceous solids heat, is used for solving response system energy consumption height, energy wave The problem taken;Described oil gas vent is connected with described Oil-gas Separation unit, for further Oil-gas Separation.
Oil-gas Separation unit 6 includes gs-oil separator, for oil gas carried out isolated liquid fuel and Combustion gas.Gas booster unit 7 includes pressue device, for combustion gas is carried out pressurized treatments.When being not provided with During gas booster unit 7, described Oil-gas Separation unit 6 is connected with described gas-fired heater 8.Work as setting During gas booster unit 7, described Oil-gas Separation unit 6 depends on gas booster unit 7, gas-fired heater 8 Secondary connected.The gas heat carrier entrance phase of the gas outlet of described gas-fired heater 8 and described reacting furnace 4 Even, as gas heat carrier after a part of combustion gas that pyrolytic process produces can being heated in gas-fired heater Heat, recycling for combustion gas is provided for reacting furnace.
Compressed gas after pressurization can be utilized respectively by gas booster unit 7, and a part sends into combustion gas container 9 Storage, a part is sent to gas-fired heater 8 and heats.
Above-mentioned system may also include tar storage tank 10, and the entrance of described tar storage tank 10 divides with described oil gas Liquid outlet from unit 6 is connected, and is used for storing liquid tar.The outlet of described tar storage tank 10 and institute The entrance stating batch mixing forming unit 3 is connected, for tar is inputted batch mixing forming unit as binding agent, Make coal and Calx molding effectively, so that the type ball formed has preferable intensity, heat stability, reach Production requirement to carbide raw material.Certainly, the liquid outlet of Oil-gas Separation unit 6 can directly become with batch mixing The entrance of type unit 3 is connected, and saves the setting of tar storage tank 10.
The gas outlet of gas booster unit 7 can be connected with combustion gas container 9 and gas-fired heater 8 respectively, The gas outlet of gas-fired heater 8 is connected with the gas heat carrier entrance of described reacting furnace 4.When not setting combustion During gas presser unit 7, combustion gas container 9 can directly gas outlet with Oil-gas Separation unit 6 be connected.
The carbonaceous solids outlet of reacting furnace 4 send the entrance of unit 5 to be connected with described carbonaceous solids heat, carbon containing Solid thermal send the outlet of unit 5 to be connected with the entrance of carbide smelting furnace 11, and the smelting for carbide produces.
Wherein, carbonaceous solids heat send unit 5, carbonaceous solids is filled the most afterwards from the solids exit mouth of reacting furnace Enter in carbonaceous solids heat-insulation conveying device, it is possible to reduce the heat loss of carbonaceous solids, be greatly saved carbide The power consumption of smelting furnace, and then reduce the processing cost of carbide.
As in figure 2 it is shown, the concrete operation step of the production method of the Acetylenogen. of present invention offer is as follows:
Raw material is crushed: coal, Calx are crushed to below 2mm particle diameter;
Powder batch mixing molding: the coal after crushing and Calx elder generation batch mixing aftershaping, obtains type ball, after molding The granularity of type ball is 5-40 millimeter, and cold pressing strength is more than 200 Ns/;
Reacting furnace processes, and type ball carries out in reacting furnace pyrolysis processing.Reaction temperature is Celsius at 500-950 Degree, obtains the product such as carbonaceous solids, combustion gas after pyrolysis;
Carbonaceous solids hot charging processes, and from the solids exit mouth of reacting furnace, carbonaceous solids is loaded carbon containing the most afterwards In solid heat-insulation conveying device, reduce the heat loss of carbonaceous solids;
Carbide smelting furnace is smelted: the carbonaceous solids in heat-insulation conveying device is sent into carbide smelting furnace and carries out smelting Refining, smelting temperature is more than 1700 degrees Celsius;
Gas booster, carries out pressurized treatments in pressue device by combustion gas, and by the compressed gas after pressurization It is utilized respectively, is partly into the storage of combustion gas container, is partly into gas-fired heater and heats;
Gas heating, heats a part of compressed gas in heating furnace, and the Control for Kiln Temperature of heating furnace is 700 More than degree Celsius, combustion gas be mainly composed of acetylene, methane, carbon monoxide, carbon dioxide etc..
Tar is used for molding, and as binding agent, the tar produced in reacting furnace pyrolytic process is used for powder Molding.
Above-mentioned steps is not all of necessary, broken, the gas booster of such as raw material, recycling of tar Etc. arranging according to practical situation.
From such scheme, the production system of the Acetylenogen. that the present invention provides and method, by being pyrolyzed A part of combustion gas that process produces provides for reacting furnace as gas heat carrier after heating in gas-fired heater Heat, has accomplished recycling of resource;The tar produced by cracking process is as the bonding of forming process Agent, improves ratio of briquetting and the type ball intensity of powder;The carbonaceous solids produced from reacting furnace is carried out hot charging, And the carbonaceous solids of hot charging is sent in carbide smelting furnace, it is greatly saved the power consumption of carbide smelting furnace, And then reduce carbide processing cost.
Below in conjunction with specific embodiment, technical scheme is described.
In following embodiment, institute's taking technique condition value is exemplary, and its desirable numerical range is the most aforementioned Shown in description.
Embodiment 1
The raw material such as coal and Calx entrance raw material fragmentation cell is crushed, is crushed to below 1mm, enters Powder batch mixing forming unit carries out batch mixing molding, and moulded coal enters reacting furnace, sets reaction temperature and reacts, Producing carbonaceous solids and combustion gas, carbonaceous solids is reacted in carbide smelting furnace, produces Acetylenogen., i.e. Carbide.
The carbonaceous solids of the present embodiment is mining area, Inner Mongol brown coal, and the granularity of break up coal is below 2mm, type The size of ball is 18mm*18mm*38mm, 4mmx4mmx10mm, 30mmx30mmx50mm, and reaction temperature is respectively 500 DEG C, 720 DEG C is 950 DEG C, and gas heating temperature is 800 DEG C.The carbon containing that raw material and reacting furnace produce is solid The analysis result meansigma methods of body such as table 1-table 2.The average reaction temperature of carbide smelting furnace is 1900 degrees Celsius, The average gas forming amount of carbide product is 310 liters/kilogram.
Table 1: feedstock analysis result
Table 2 carbonaceous solids analysis result
Wherein, the M in tableadRepresent air-dried moisture;AadRepresent and be dried base ash;VadRepresent sky Air dry dry base volatile matter;FCadRepresent air-dried basis fixed carbon.
S in tablet,adRepresent air-dried basis total sulphur content;CadRepresent air-dried basis carbon content;HadRepresent Air-dried basis hydrogen content;NadRepresent air-dried basis nitrogen content;OadRepresent air-dried basis oxygen content.
As seen from the above-described embodiment, technical scheme can effectively utilize combustion gas and the carbon containing of pyrolysis generation The calorific value of solid, develops towards the maximized direction of resource and Energy harvesting, to whole calcium carbide industry and society Positive effect can be suffered from by environment.
Last it is noted that obvious, above-described embodiment is only by clearly demonstrating the act that the present invention is made Example, and not restriction to embodiment.For those of ordinary skill in the field, above-mentioned Can also make other changes in different forms on the basis of explanation.Here without also cannot be to institute Some embodiments give exhaustive.And the obvious change thus amplified out or variation are still in this Among the protection domain of invention.

Claims (10)

1. a production system for Acetylenogen., described system includes batch mixing forming unit, reacting furnace, carbon containing Solid thermal send unit, Oil-gas Separation unit, gas-fired heater and carbide smelting furnace, wherein,
Described batch mixing forming unit includes feeding mouth and discharging opening, for the molding of type ball;
Described reacting furnace includes type ball entrance, gas heat carrier entrance, oil gas vent and carbonaceous solids outlet, Pyrolysis for type ball;Described type ball entrance is connected with the discharging opening of described batch mixing forming unit;Described contain Carbon solid outlet send unit to be connected with described carbonaceous solids heat;Described oil gas vent and described Oil-gas Separation list Unit is connected;
Described Oil-gas Separation unit is connected with described gas-fired heater;The gas outlet of described gas-fired heater It is connected with the gas heat carrier entrance of described reacting furnace;
Described carbide smelting furnace includes carbide raw material entrance and carbide outlet, for the smelting of carbide;Described Carbide raw material entrance send the outlet of unit to be connected with described carbonaceous solids heat.
System the most according to claim 1, it is characterised in that described system also includes tar storage tank, The entrance of described tar storage tank is connected with the liquid outlet of described Oil-gas Separation unit, described tar storage tank Outlet is connected with the entrance of described batch mixing forming unit.
System the most according to claim 1, it is characterised in that described system also includes gas booster Unit, described gas booster unit is located between described Oil-gas Separation unit and described gas-fired heater.
System the most according to claim 1, it is characterised in that described system also includes fragmentation cell, Before described fragmentation cell is located at described batch mixing forming unit.
System the most according to claim 3, it is characterised in that described system also includes combustion gas container, The gas outlet of described combustion gas container and described Oil-gas Separation unit or the combustion gas with described gas booster unit Outlet is connected.
6. utilize the method that system described in any one of claim 1 to 5 carries out Acetylenogen. production, bag Include following steps:
By particle diameter, < coal of 2mm and Calx is first batch mixing aftershaping in described batch mixing forming unit, obtains type ball;
The described type ball described reacting furnace of feeding is carried out pyrolytic reaction, obtains carbonaceous solids, oil gas;
Unit is sent by the described carbonaceous solids described carbonaceous solids heat of feeding;
Described carbonaceous solids heat is sent the carbonaceous solids in unit send into described carbide smelting furnace smelt, Obtain carbide;
The described oil gas described Oil-gas Separation unit of feeding is carried out isolated tar and combustion gas;
Heat in described combustion gas is sent into described gas-fired heater;
Combustion gas after described heating is sent into described reacting furnace as gas heat carrier.
Method the most according to claim 6, it is characterised in that the granularity of described type ball is 5-40 Millimeter, cold pressing strength is more than 200 Ns/.
Method the most according to claim 6, it is characterised in that described method further comprises the steps of:
Described tar is sent in described batch mixing forming unit as binding agent.
Method the most according to claim 6, it is characterised in that described method further comprises the steps of:
A part for described combustion gas is sent into the storage of combustion gas container.
Method the most according to claim 6, it is characterised in that described method further comprises the steps of:
Coal and Calx are crushed to below 2mm particle diameter.
CN201610530774.4A 2016-07-06 2016-07-06 A kind of production method and system of calcium carbide Active CN105948050B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106517204A (en) * 2016-11-16 2017-03-22 神雾环保技术股份有限公司 Special system and method for forming calcium carbide raw material
CN106635164A (en) * 2016-11-07 2017-05-10 中国石油大学(华东) Process for producing acetylene through lime carbon pellet in-situ reaction

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CN103708455A (en) * 2013-12-25 2014-04-09 北京神雾环境能源科技集团股份有限公司 Method for preparing calcium carbide
CN104556037A (en) * 2014-12-30 2015-04-29 北京神雾环境能源科技集团股份有限公司 Method for preparing calcium carbide
CN105668568A (en) * 2016-01-04 2016-06-15 神雾环保技术股份有限公司 System and method for production of calcium carbide
CN205953532U (en) * 2016-07-06 2017-02-15 神雾环保技术股份有限公司 Production system of calcium carbide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103708455A (en) * 2013-12-25 2014-04-09 北京神雾环境能源科技集团股份有限公司 Method for preparing calcium carbide
CN104556037A (en) * 2014-12-30 2015-04-29 北京神雾环境能源科技集团股份有限公司 Method for preparing calcium carbide
CN105668568A (en) * 2016-01-04 2016-06-15 神雾环保技术股份有限公司 System and method for production of calcium carbide
CN205953532U (en) * 2016-07-06 2017-02-15 神雾环保技术股份有限公司 Production system of calcium carbide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106635164A (en) * 2016-11-07 2017-05-10 中国石油大学(华东) Process for producing acetylene through lime carbon pellet in-situ reaction
CN106517204A (en) * 2016-11-16 2017-03-22 神雾环保技术股份有限公司 Special system and method for forming calcium carbide raw material

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