CN105236409A - Calcium carbide smelting process - Google Patents
Calcium carbide smelting process Download PDFInfo
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- CN105236409A CN105236409A CN201510568327.3A CN201510568327A CN105236409A CN 105236409 A CN105236409 A CN 105236409A CN 201510568327 A CN201510568327 A CN 201510568327A CN 105236409 A CN105236409 A CN 105236409A
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- calcium carbide
- coke
- rotary kiln
- furnace
- wingdale
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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 invention provides a calcium carbide smelting process, in which uniformly mixed coke and limestone are treated under the support of a conveyor belt, a rotary kiln, a heat transportation device and a calcium carbide furnace, wherein liquid calcium carbide is formed. The calcium carbide smelting process includes the following steps: uniformly mixing the coke and the limestone on the conveyor belt and feeding the mixture to the rotary kiln; preheating the uniformly mixed coke and limestone to 900-1000 DEG C in the rotary kiln to decompose the limestone into quick lime; and feeding the quick lime and the coke at 900-1000 DEG C to the calcium carbide furnace through the heat transportation device to form the liquid calcium carbide in the calcium carbide furnace. By means of the method, a technical problem of forming the liquid calcium carbide from the coke and limestone is solved, thereby achieving energy saving, environment protection and cost reduction.
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 CaC
2, be the important basic material in organic synthesis industry, be widely used in multiple organic synthesis product.At present, the main method of industrial production calcium carbide is electric heating process, this method is with a long history, technology maturation, but this method need adopt block stock to produce calcium carbide, there is long reaction time, temperature of reaction be high, current consumption is large, production efficiency is low, the problems such as dust and vent gas treatment difficulty, belong to three hi-techs of typical " high investment, high pollution, high energy consumption ", do not meet energy-saving and emission-reduction and Sustainable development requirement.
Due to many drawbacks of electric heating process, propose the technology that the hot method of multiple oxygen produces calcium carbide both at home and abroad, the hot method of oxygen refers in the presence of oxygen, makes part carbon burning, and the heat of high temperature of generation makes remaining carbon and calcium oxide reaction generate calcium carbide.Compare electric heating process, the hot method of oxygen can realize under relatively short time and lower temperature condition, produces calcium carbide with less pollution, but substantially still under test, and realizing industrialization also needs a large amount of exploratory studys and experiment.
At present, the method for domestic and international industrial production calcium carbide is still electric heating process, and reduces consumption of electrode and current consumption by various measure, improves dust and vent gas treatment measure, reduces environmental pollution.
Summary of the invention
For solving the problems of the technologies described above, main purpose of the present invention is that providing a kind of smelts calcium carbide technique.
For reaching above-mentioned purpose, the technical scheme of the present invention's application is: provide a kind of smelting calcium carbide technique, under being included in the support of transhipment belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, coke after mixing and Wingdale are processed, and form liquid calcium carbide, wherein: the step that smelting calcium carbide technique comprises is:
One, by transhipment belt by coke and Wingdale in mass ratio (0.4 ~ 0.6): the ratio of 1 mixes and is sent in rotary kiln;
Two, in rotary kiln, the coke after mixing and Wingdale are preheated to 900 DEG C to 1000 DEG C, make decomposition of limestone be unslaked lime;
Three, the unslaked lime of 900 DEG C to 1000 DEG C and coke are joined in furnace of calcium carbide by heat transfer apparatus, make it in furnace of calcium carbide, form liquid calcium carbide.
Preferred in the present embodiment, also comprise the interchanger be connected with furnace of calcium carbide, the fly-ash separator be connected with interchanger, and the purified gas pipeline that fly-ash separator is connected.
Preferred in the present embodiment, furnace of calcium carbide escaping gas, carries out waste heat recovery through interchanger, then obtains purified gas through fly-ash separator purifying and dedusting, and purified gas makes fuel by pipeline input rotary kiln.
Preferred in the present embodiment, pipeline is also provided with T-valve, is communicated with peripheral equipment by T-valve, and peripheral equipment can share purified gas with rotary kiln simultaneously by this.
Preferred in the present embodiment, the coke after mixing and Wingdale are for being preheated to 900 DEG C.
Preferred in the present embodiment, the coke after mixing and Wingdale are for being preheated to 950 DEG C.
Preferred in the present embodiment, the coke after mixing and Wingdale are for being preheated to 1000 DEG C.
Compared with prior art, its useful effect is in the present invention:
Utilize rotary kiln coke preheating and Wingdale simultaneously, the pre-processing device to Wingdale can be reduced, reduce cost of investment, shortened process, in addition, coke and unslaked lime add in mineral hot furnace with hot form, can make full use of this partial heat, the power consumption of remarkable reduction mineral hot furnace, reduces production cost.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in further detail.Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining technical scheme of the present invention, and not should be understood to limitation of the present invention.
In describing the invention, term " interior ", " outward ", " longitudinal direction ", " transverse direction ", " on ", D score, " top ", the orientation of the instruction such as " end " or position relationship be based on orientation shown in the drawings or position relationship, be only the present invention for convenience of description instead of require that the present invention with specific azimuth configuration and operation, therefore must not should be understood to limitation of the present invention.
Refer to shown in Fig. 1, the invention provides a kind of smelting calcium carbide technique, under it is included in the support of transhipment belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, processing treatment is carried out to the coke after mixing and Wingdale, makes it to form liquid calcium carbide, wherein:
Embodiment 1:
Step one, on transhipment belt, after the ratio mixing of coke and Wingdale 0.4:1 in mass ratio, adds in rotary kiln;
Step 2, in rotary kiln, is preheated to 900 DEG C by the coke after mixing and Wingdale, and makes Wingdale be decomposed into unslaked lime completely;
Step 3, joins in furnace of calcium carbide by the unslaked lime of 900 DEG C and coke by heat transfer apparatus, generates liquid calcium carbide in furnace of calcium carbide;
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with interchanger, and then carry out purifying and dedusting with fly-ash separator, obtain purified gas, a part of fuel as rotary kiln of purified gas of acquisition, another part uses as the fuel of miscellaneous equipment (as peripheral equipment).
Embodiment two:
Step one, on transhipment belt, after the ratio mixing of coke and Wingdale 0.5:1 in mass ratio, adds in rotary kiln;
Step 2, in rotary kiln, is preheated to 950 DEG C by the coke after mixing and Wingdale, and makes Wingdale be decomposed into unslaked lime completely;
Step 3, joins in furnace of calcium carbide by the unslaked lime of 950 DEG C and coke by heat transfer apparatus, generates liquid calcium carbide in furnace of calcium carbide;
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with interchanger, and then carry out purifying and dedusting with fly-ash separator, obtain purified gas, a part of fuel as rotary kiln of purified gas of acquisition, another part uses as the fuel of miscellaneous equipment (as peripheral equipment).
Embodiment three:
Step one, on transhipment belt, after the ratio mixing of coke and Wingdale 0.6:1 in mass ratio, adds in rotary kiln;
Step 2, in rotary kiln, is preheated to 1000 DEG C by the coke after mixing and Wingdale, and makes Wingdale be decomposed into unslaked lime completely;
Step 3, joins in furnace of calcium carbide by the unslaked lime of 1000 DEG C and coke by heat transfer apparatus, generates liquid calcium carbide in furnace of calcium carbide;
Step 4, escaping gas in furnace of calcium carbide, first carries out waste heat recovery with interchanger, and then carry out purifying and dedusting with fly-ash separator, obtain purified gas, a part of fuel as rotary kiln of purified gas of acquisition, another part uses as the fuel of miscellaneous equipment (as peripheral equipment).
Claims (7)
1. smelt a calcium carbide technique, under being included in the support of transhipment belt, rotary kiln, heat transfer apparatus and furnace of calcium carbide, the coke after mixing and Wingdale being processed, and forms liquid calcium carbide, it is characterized in that: the step that smelting calcium carbide technique comprises is:
One, coke and Wingdale are mixed in proportion by transhipment belt and is sent in rotary kiln;
Two, in rotary kiln, the coke after mixing and Wingdale are preheated to 900 DEG C to 1000 DEG C, make decomposition of limestone be unslaked lime;
Three, the unslaked lime of 900 DEG C to 1000 DEG C and coke are joined in furnace of calcium carbide by heat transfer apparatus, make it in furnace of calcium carbide, form liquid calcium carbide.
2. smelting calcium carbide technique as claimed in claim 1, is characterized in that: also comprise the interchanger be connected with furnace of calcium carbide, the fly-ash separator be connected with interchanger, and the purified gas pipeline that fly-ash separator is connected.
3. smelting calcium carbide technique as claimed in claim 2, is characterized in that: furnace of calcium carbide escaping gas, carries out waste heat recovery through interchanger, then obtain purified gas through fly-ash separator purifying and dedusting, and purified gas makes fuel by pipeline input rotary kiln.
4. smelting calcium carbide technique as claimed in claim 3, it is characterized in that: pipeline is also provided with T-valve, be communicated with by T-valve with peripheral equipment, peripheral equipment can share purified gas with rotary kiln simultaneously by this.
5. the smelting calcium carbide technique as described in any one of Claims 1-4, is characterized in that: the coke after mixing and Wingdale are for being preheated to 900 DEG C.
6. the smelting calcium carbide technique as described in any one of Claims 1-4, is characterized in that: the coke after mixing and Wingdale are for being preheated to 950 DEG C.
7. the smelting calcium carbide technique as described in any one of Claims 1-4, is characterized in that: the coke after mixing and Wingdale are for being preheated to 1000 DEG C.
Priority Applications (1)
| 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 true CN105236409A (en) | 2016-01-13 |
| CN105236409B CN105236409B (en) | 2018-09-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629729A (en) * | 2016-12-07 | 2017-05-10 | 钢研晟华工程技术有限公司 | Method for smelting calcium carbide from limestone through one-step method |
| CN114162822A (en) * | 2022-01-12 | 2022-03-11 | 米长山 | Process for producing calcium carbide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4391786A (en) * | 1980-09-17 | 1983-07-05 | Hoechst Aktiengesellschaft | Production of calcium carbide |
| 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 |
| 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 |
-
2015
- 2015-09-09 CN CN201510568327.3A patent/CN105236409B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4391786A (en) * | 1980-09-17 | 1983-07-05 | Hoechst Aktiengesellschaft | Production of calcium carbide |
| 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 |
| 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 |
Non-Patent Citations (3)
| Title |
|---|
| 安志明: "电石炉气的净化工艺及其应用", 《聚氯乙烯》 * |
| 陈性永等: "《基本有机化工生产及工艺》", 30 June 2006, 北京：化学工业出版社 * |
| 马宝岐等: "《半焦的利用》", 30 June 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629729A (en) * | 2016-12-07 | 2017-05-10 | 钢研晟华工程技术有限公司 | Method for smelting calcium carbide from limestone through one-step method |
| CN114162822A (en) * | 2022-01-12 | 2022-03-11 | 米长山 | Process for producing calcium carbide |
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| Publication number | Publication date |
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| CN105236409B (en) | 2018-09-25 |
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