CN105236409B - A kind of smelting calcium carbide technique - Google Patents
A kind of smelting calcium carbide technique Download PDFInfo
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- CN105236409B CN105236409B CN201510568327.3A CN201510568327A CN105236409B CN 105236409 B CN105236409 B CN 105236409B CN 201510568327 A CN201510568327 A CN 201510568327A CN 105236409 B CN105236409 B CN 105236409B
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- calcium carbide
- coke
- furnace
- lime stone
- rotary kiln
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The present invention provides a kind of smelting calcium carbide technique, be included under the support of transhipment belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, to after mixing coke and lime stone handle, and form liquid calcium carbide, it is characterised in that：It includes the steps that being to smelt calcium carbide technique：Coke and lime stone mixing and are transmitted in rotary kiln in proportion by transporting belt；In rotary kiln by after mixing coke and lime stone be preheated to 900 DEG C to 1000 DEG C, make decomposition of limestone be quick lime；900 DEG C to 1000 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide, it is allowed to form liquid calcium carbide in furnace of calcium carbide, the step of being applied by aforementioned device, it solves the technical issues of coke and lime stone formation liquid calcium carbide, has reached energy-saving and environmental protection and reduced the good result of cost.
Description
Technical field
The present invention relates to calcium carbide field, espespecially a kind of production calcium carbide technique.
Background technology
The main component of calcium carbide is CaC2, it is the important basic material in organic synthesis industry, is widely used in a variety of
In organic synthesis product.Currently, the main method of industrial production calcium carbide is electrothermal way, the method is with a long history, technology maturation, but should
Method need to use block stock to produce calcium carbide, there are the reaction time is long, reaction temperature is high, power consumption is big, low production efficiency, dust and
The problems such as vent gas treatment difficulty belong to three high-tech of typical " high investment, high pollution, high energy consumption ", do not meet energy saving
Emission reduction and sustainable development requirement.
Due to many drawbacks of electrothermal way, the technology of the hot method production calcium carbide of a variety of oxygen is proposed both at home and abroad, and the hot method of oxygen refers to
In the presence of oxygen, make part carbon burning, the high temperature heat of generation that remaining carbon and calcium oxide be made to react generation calcium carbide.Phase
Than electrothermal way, the hot method of oxygen may be implemented under relatively short time and lower temperature condition, and calcium carbide is produced with smaller pollution,
But substantially still in experimental stage, realize that industrialization also needs to a large amount of pilot study and experiment.
Currently, the method for industrial production calcium carbide is still electrothermal way both at home and abroad, and by various measures reduce consumption of electrode and
Power consumption improves dust and vent gas treatment measure, reduces environmental pollution.
Invention content
In order to solve the above technical problems, the main purpose of the present invention is to provide a kind of smelting calcium carbide techniques.
To reach above-mentioned purpose, the technical solution that the present invention applies is：A kind of smelting calcium carbide technique is provided, is included in and turns
Under the support for transporting belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, to after mixing coke and lime stone handle, and shape
At liquid calcium carbide, wherein：It includes the steps that being to smelt calcium carbide technique：
One, by transporting belt by coke and lime stone (0.4~0.6) in mass ratio：1 ratio mixing is simultaneously transmitted to back
In rotary kiln；
Two, in rotary kiln by after mixing coke and lime stone be preheated to 900 DEG C to 1000 DEG C, make the decomposition of limestone be
Quick lime；
Three, 900 DEG C to 1000 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide, are allowed in electricity
Liquid calcium carbide is formed in stone stove.
In the present embodiment preferably, further include the heat exchanger being connected with furnace of calcium carbide, the deduster being connected with heat exchanger,
And the clean coal feed channel that deduster is connected.
In the present embodiment preferably, furnace of calcium carbide escaping gas carries out waste heat recovery through heat exchanger, then is purified through deduster
Dedusting obtains purified gas, and purified gas inputs rotary kiln by pipeline and makees fuel.
In the present embodiment preferably, pipeline is additionally provided with triple valve, is connected to external equipment by triple valve, thereby external to set
It is standby to share purified gas with rotary kiln simultaneously.
In the present embodiment preferably, the coke and lime stone after mixing are to be preheated to 900 DEG C.
In the present embodiment preferably, the coke and lime stone after mixing are to be preheated to 950 DEG C.
In the present embodiment preferably, the coke and lime stone after mixing are to be preheated to 1000 DEG C.
Compared with prior art, the present invention it has the advantages that：
Using rotary kiln coke preheating and lime stone simultaneously, the pre-processing device to lime stone can be reduced, reduce investment at
This, the partial heat can be made full use of in addition, coke and quick lime are added in the form of hot in mineral hot furnace by shortening technological process,
The power consumption of mineral hot furnace is significantly reduced, production cost is reduced.
Description of the drawings
Fig. 1 is the frame structure schematic diagram of the embodiment of the present invention.
Specific implementation mode
With reference to specific embodiment and attached drawing, invention is further described in detail.It is described below in detail the present invention's
Embodiment, examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, only
Technical solution for explaining the present invention, and it is not construed as limitation of the present invention.
In the description of the present invention, the fingers such as term "inner", "outside", " longitudinal direction ", " transverse direction ", "upper", "lower", "top", "bottom"
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention rather than
It is required that the present invention must be with specific azimuth configuration and operation, therefore it is not construed as limitation of the present invention.
Refering to Figure 1, the present invention provides a kind of smelting calcium carbide techniques comprising in transhipment belt, rotary kiln, heat
Under the support of conveying device and furnace of calcium carbide, to after mixing coke and lime stone be processed, be allowed to form liquid calcium carbide,
Wherein：
Embodiment 1：
Step 1, on transhipment belt, by coke and lime stone in mass ratio 0.4：After 1 ratio mixing, revolution is added
In kiln；
Step 2, in rotary kiln, by after mixing coke and lime stone be preheated to 900 DEG C, and lime stone is made to divide completely
Solution is quick lime；
900 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide by step 3, raw in furnace of calcium carbide
At liquid calcium carbide；
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with heat exchanger, is then carried out only with deduster again
Eliminate dirt, obtain purified gas, the fuel of the purified gas part of acquisition as rotary kiln, another part as miscellaneous equipment (such as
External equipment) fuel use.
Embodiment two：
Step 1, on transhipment belt, by coke and lime stone in mass ratio 0.5：After 1 ratio mixing, revolution is added
In kiln；
Step 2, in rotary kiln, by after mixing coke and lime stone be preheated to 950 DEG C, and lime stone is made to divide completely
Solution is quick lime；
950 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide by step 3, raw in furnace of calcium carbide
At liquid calcium carbide；
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with heat exchanger, is then carried out only with deduster again
Eliminate dirt, obtain purified gas, the fuel of the purified gas part of acquisition as rotary kiln, another part as miscellaneous equipment (such as
External equipment) fuel use.
Embodiment three：
Step 1, on transhipment belt, by coke and lime stone in mass ratio 0.6：After 1 ratio mixing, revolution is added
In kiln；
Step 2, in rotary kiln, by after mixing coke and lime stone be preheated to 1000 DEG C, and lime stone is made to divide completely
Solution is quick lime；
1000 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide, in furnace of calcium carbide by step 3
Generate liquid calcium carbide；
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with heat exchanger, is then carried out only with deduster again
Eliminate dirt, obtain purified gas, the fuel of the purified gas part of acquisition as rotary kiln, another part as miscellaneous equipment (such as
External equipment) fuel use.
Claims (7)
1. a kind of smelting calcium carbide technique is included under the support of transhipment belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, to mixed
Coke and lime stone after even are handled, and form liquid calcium carbide, it is characterised in that：Smelting calcium carbide technique includes the steps that
It is：
One, by transporting belt by coke and lime stone (0.4~0.6) in mass ratio：1 ratio mixing is simultaneously transmitted to rotary kiln
In；
Two, in rotary kiln by after mixing coke and lime stone be preheated to 900 DEG C to 1000 DEG C, so that decomposition of limestone is made a living stone
Ash；
Three, 900 DEG C to 1000 DEG C of quick lime and coke are added to by heat transfer apparatus in furnace of calcium carbide, are allowed in furnace of calcium carbide
Interior formation liquid calcium carbide.
2. smelting calcium carbide technique as described in claim 1, it is characterised in that：Further include the heat exchanger being connected with furnace of calcium carbide,
The clean coal feed channel that the deduster and deduster being connected with heat exchanger are connected.
3. smelting calcium carbide technique as claimed in claim 2, it is characterised in that：Furnace of calcium carbide escaping gas is carried out through heat exchanger
Waste heat recovery, then purified gas is obtained through deduster purifying and dedusting, purified gas inputs rotary kiln by pipeline and makees fuel.
4. smelting calcium carbide technique as claimed in claim 3, it is characterised in that：Pipeline is additionally provided with triple valve, by triple valve with
External equipment is connected to, and thereby external equipment can share purified gas with rotary kiln simultaneously.
5. as Claims 1-4 any one of them smelts calcium carbide technique, it is characterised in that：Coke after mixing and lime stone
To be preheated to 900 DEG C.
6. as Claims 1-4 any one of them smelts calcium carbide technique, it is characterised in that：Coke after mixing and lime stone
To be preheated to 950 DEG C.
7. as Claims 1-4 any one of them smelts calcium carbide technique, it is characterised in that：Coke after mixing and lime stone
To be preheated to 1000 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510568327.3A CN105236409B (en) | 2015-09-09 | 2015-09-09 | A kind of smelting calcium carbide technique |
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| CN201510568327.3A CN105236409B (en) | 2015-09-09 | 2015-09-09 | A kind of smelting calcium carbide technique |
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| CN105236409A CN105236409A (en) | 2016-01-13 |
| CN105236409B true CN105236409B (en) | 2018-09-25 |
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| CN106629729B (en) * | 2016-12-07 | 2019-02-01 | 钢研晟华工程技术有限公司 | A kind of method that lime stone one-step method smelts calcium carbide |
| CN114162822A (en) * | 2022-01-12 | 2022-03-11 | 米长山 | Process for producing calcium carbide |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3035026A1 (en) * | 1980-09-17 | 1982-04-22 | Hoechst Ag, 6000 Frankfurt | METHOD FOR PRODUCING CALCIUM CARBIDE |
| CN103708455B (en) * | 2013-12-25 | 2016-06-15 | 神雾环保技术股份有限公司 | The method preparing carbide |
| CN203653259U (en) * | 2014-04-23 | 2014-06-18 | 北京神雾环境能源科技集团股份有限公司 | Hot-conveyance-based calcium carbide preparation system |
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