CN106564901A - Manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke - Google Patents
Manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke Download PDFInfo
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- CN106564901A CN106564901A CN201610977458.1A CN201610977458A CN106564901A CN 106564901 A CN106564901 A CN 106564901A CN 201610977458 A CN201610977458 A CN 201610977458A CN 106564901 A CN106564901 A CN 106564901A
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- carbon pellets
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Abstract
The invention relates to a manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke. Quicklime powder and a binding agent are mixed under the closed drying condition to be smashed to be smaller than or equal to 1 mm, the smashed objects are added into a mixing machine to be evenly mixed with the pyrolytic semi-coke obtained after heat exchange again, and a press is used for conducting extrusion forming to produce the lime carbon pellets. The lime carbon pellets are used for producing calcium carbide with an electric furnace method, in-situ chemical reactions reduce power consumption and production cost, the additional value of the semi-coke is improved, cyclic utilization of high-quality limestone resources is achieved, and the calcium carbide manufacturing process is greatly simplified.
Description
1. technical field
The present invention provides the production technology that a kind of pyrolysis char produces Calx carbon pellets, is related to coal chemical technology.
2. background technology
China's low-order coal accounts for 60% of coal resources or so, and fast pyrogenation upgrading is effective way that its high-efficiency cleaning is utilized
Footpath, is also that minimum, Income Maximum is invested in current Coal Chemical Industry.The semicoke of by-product, as a kind of novel carbon material, fixed carbon
High low ash, sulfur and the phosphorus content of containing of high, resistivity is low, cheap, is just progressively being applied to the products such as carbide, ferroalloy
Production, with the expensive metallurgical coke of fictitious hosts.Solid heat carrier method Mass and heat transfer is fast, liquid receives high, energy and the utilization of resources is closed
Manage, be easy to maximize, be the fine coal fast pyrogenation upgraded coal technique for most having industrial prospect at present, but its semicoke for producing is
Coke breeze, efficient higher value application becomes the bottleneck for restricting the technique.
At present acetylene, mainly by carbide large-scale production, is the important source material of organic synthesiss industry.Carbide be with
Quick lime and carbon are raw material, are generated through complicated physicochemical change in furnace of calcium carbide.Although carbide life both at home and abroad
Production. art has electrothermal way, rotating the arc oven process, oxygen full-boiled process, electric heating-oxygen thermal coupling method, plasma method, catalysis method etc., but tradition
Heating by electric cooker method remain presently most ripe calcium carbide production method.Its main production process is as follows：Block quick lime
Added by the entrance or pipeline of electric furnace upper end first after dispensing with coke and successively heated up in electric furnace, caustic lime block is in conversion zone
Inside it is fused into fluid；The high-temperature region of about 1600 DEG C -1700 DEG C around electrode tip, the molten state life with larger activity
Calx and coke BOB(beginning of block) interact, and chemical reaction occurs, and generate carbide and the tail gas rich in CO；Carbide is from carbide furnace bottom
Discharge, furnace of calcium carbide top excludes the emission power generation rich in CO or as industrial chemicals；Carbide hydrolysis production acetylene, by-product lime slurry
Sedimentation is urgently recycled as industrial residue.The tail gas main component of furnace of calcium carbide is CO in calcium carbide production process, its process side
Formula has to be solved.In addition caustic lime block and coke briquette course of reaction need through quick lime molten state and penetrate in coke briquette to send out
Biochemical reaction, reaction temperature is high, and speed is slow, constrains the large-scale development of carbide industry.
Quick lime adding procedure is loaded down with trivial details in current heating by electric cooker method technical process, complexity, and entirely giving birth in limestone
Produce and use during, all the time along with solid is broken, the operation such as screening solids and solid transportation, these operations can produce greatly
Powdery quick lime of the amount less than 6mm, it would be highly desirable to utilize.It is more nervous additionally, due to fat lime stone resource, exploit to massif environment
Destruction is serious, and various places are controlled Limestone mining amount more and more sternly, becomes the bottleneck of domestic quick lime production, it would be highly desirable to improve Calx
The cyclic utilization rate of stone.
Therefore being badly in need of exploitation can utilize calcium lime powder and coke breeze to produce the new technology of carbide, eliminate pulverized coal pyrolysis upgrading
Bottleneck, improves the cyclic utilization rate of limestone, reduces reaction temperature, accelerates response speed, reduces energy consumption and cost, improves
The disposal ability of furnace of calcium carbide, eliminates secondary pollution.
3. the content of the invention
The invention aims to overcome the shortcomings of that existing heating by electric cooker method production carbide needs caustic lime block and coke button
And a kind of pyrolysis char invented produces the production technology of Calx carbon pellets, calcium lime powder and fast pyrogenation coke powder had both been solved
Using a difficult problem, reaction temperature is reduced again, accelerates response speed, the process energy for reducing energy consumption and cost, improve furnace of calcium carbide
Power.
Technical scheme：
The purpose of the present invention is by the way that calcium lime powder and pyrolysis coke powder are squeezed into into pelletizing by binding agent, in carbide production
During quick lime and carbon dust original position frit reaction, reduce energy consumption and cost, improve furnace of calcium carbide disposal ability.It is characterized in that
By calcium lime powder and binding agent by weight 4-8:1 proportioning, co-grinding is produced to below 1mm under the conditions of close drying
Modified quicklime powder；The high temperature coke powder heat exchange that rapid pyrolysis apparatus are discharged is cooled to 70 DEG C～550 DEG C, by modified quicklime powder and
Pyrolysis coke powder is by weight 1.3-1.8:1 quick mixing, is incubated 30 seconds to 40 minutes, is then fed into pressure forming machine hot-forming
Production Calx carbon pellets；Pressure forming machine is sealed with inertia dry gas, and Calx carbon pellets are equally cold using inertia dry gas
But lower the temperature, as product furnace of calcium carbide reaction in-situ production carbide is sent into.
Wherein, binding agent is in high softening point bitumen, low-order coal, coking coal, coal tar asphalt, Polymer Synthesizing Organic substance
One or more.
The present invention by embodiment to describe the present invention in detail the characteristics of.
4. illustrate
Accompanying drawing 1 is process schematic representation of the invention.
The drawing of accompanying drawing is described as follows：
1st, calcium lime powder adds entrance 2, binding agent plus entrance 3, pulverizer 4, solid heat-exchanger 5, blender
6th, heat insulation tank 7, pressure forming machine 8, cooler 9, pyrolysis coke powder entrance
With reference to the accompanying drawings and examples come describe in detail the present invention process characteristic.
5. specific embodiment
Embodiment 1, by calcium lime powder and coal tar asphalt by weight 5:1 proportioning, respectively from calcium lime powder supply port
(1) and binding agent add entrance (1) to be added in pulverizer (3), under the conditions of close drying low-temperature mixed is crushed to below 1mm,
Produce modified quicklime powder；High temperature coke powder Jing solid heat-exchangers (4) heat exchange that rapid pyrolysis apparatus are discharged is cooled to 300 DEG C, will
Modified quicklime powder and pyrolysis coke powder are by weight 1.6:1 is quickly mixed by blender (5), and in heat insulation tank (6) 30 seconds are incubated,
It is then fed into the hot-forming production Calx carbon pellets of pressure forming machine (7)；Pressure forming machine (7) is with being dried N2Sealing, Calx carbon
Pelletizing equally uses cooler (8) N2Cool, as product furnace of calcium carbide reaction in-situ production carbide is sent into.
The drop strength of Calx carbon pellets is determined using MT-T925-2004 industrial shaping coal drop strengths assay method, is fallen
Intensity is more than 95%.
Embodiment 2, by calcium lime powder and coking coal by weight 4:1 proportioning, respectively from calcium lime powder supply port (1) and viscous
Mixture adds entrance (1) to be added to co-grinding in pulverizer (3), under the conditions of close drying, to below 1mm, to produce modified calculogenesis
Ashes；High temperature coke powder Jing solid heat-exchangers (4) heat exchange that rapid pyrolysis apparatus are discharged is cooled to 550 DEG C, by modified quicklime powder
With pyrolysis coke powder by weight 1.7:1 is quickly mixed by blender (5), and in heat insulation tank (6) 15 minutes are incubated, and is then fed into pressure
The hot-forming production Calx carbon pellets of power forming machine (7)；Pressure forming machine (7) pyrolysis dry gas seals, Calx carbon pellets are same
Cooled using cooler (8) pyrolysis dry gas, as product furnace of calcium carbide reaction in-situ production carbide is sent into.
The drop strength of Calx carbon pellets is determined using MT-T925-2004 industrial shaping coal drop strengths assay method, is fallen
Intensity is more than 85%.
Embodiment 3, using the low order coal dust of pyrolysis installation coking coal is replaced, and other processes are same as Example 2.
Pyrolysis char provided by the present invention produces the production technology of Calx carbon pellets, is mixed using substep, not only improves
Binding agent, calcium lime powder and coke powder mix homogeneously, reduce the usage amount of binding agent, reduce Calx carbon pellets volatile matters, improve solid
Carbon amounts；Further through binding agent cladding calcium lime powder surface, the calcium lime powder moisture absorption is reduced, reduce the storage and transport of calcium lime powder
Difficulty；Simultaneously with calcium lime powder and coke powder as raw material, the source of carbide raw material is expanded, improve the added value of semi-coke powder, dropped
Low production cost；Calx carbon pellets are used for electric furnace process and produce carbide, and original position occurs chemical reaction and reduces power consumption, greatly simplifies
Carbide production technology, improves the disposal ability of furnace of calcium carbide, it is to avoid the solid waste pollution of carbide slag, realizes fat lime stone
Resource is recycled.
Claims (2)
1. a kind of pyrolysis char produces the production technology of Calx carbon pellets, it is characterized in that calcium lime powder and binding agent by weight
4-8:1 proportioning, co-grinding produces modified quicklime powder to below 1mm under the conditions of close drying；Rapid pyrolysis apparatus are arranged
The high temperature coke powder heat exchange for going out is cooled to 70 DEG C～550 DEG C, by modified quicklime powder and pyrolysis coke powder by weight 1.3-1.8:1 is fast
Speed mixing, is incubated 30 seconds to 40 minutes, is then fed into the hot-forming production Calx carbon pellets of pressure forming machine；Pressure forming machine is used
Inertia dry gas are sealed, and Calx carbon pellets are equally cooled using inertia dry gas, send into furnace of calcium carbide as product former
Position reaction production carbide.
2. a kind of pyrolysis char according to claim 1 produces the production technology of Calx carbon pellets, it is characterised in that bonding
Agent is one or more in high softening point bitumen, low-order coal, coking coal, coal tar asphalt, Polymer Synthesizing Organic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977458.1A CN106564901A (en) | 2016-11-07 | 2016-11-07 | Manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977458.1A CN106564901A (en) | 2016-11-07 | 2016-11-07 | Manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke |
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| CN106564901A true CN106564901A (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610977458.1A Pending CN106564901A (en) | 2016-11-07 | 2016-11-07 | Manufacturing technique for producing lime carbon pellets through pyrolytic semi-coke |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117618A (en) * | 2017-06-16 | 2017-09-01 | 中国石油大学(华东) | A kind of hot method of calcium focal sphere group classification oxygen produces the device of calcium carbide |
| CN108525608A (en) * | 2018-03-23 | 2018-09-14 | 宁夏宝塔化工中心实验室(有限公司) | A method of producing calcium carbide coke powder mix and convert calcium lime powder pressure ball molding |
| CN109133063A (en) * | 2018-10-29 | 2019-01-04 | 北京科技大学 | The method of electrothermal way generation calcium carbide |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105907436A (en) * | 2016-06-08 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing calcium carbide raw material |
| CN106008133A (en) * | 2016-07-01 | 2016-10-12 | 神雾环保技术股份有限公司 | Method and system for preparing acetylene |
-
2016
- 2016-11-07 CN CN201610977458.1A patent/CN106564901A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105907436A (en) * | 2016-06-08 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing calcium carbide raw material |
| CN106008133A (en) * | 2016-07-01 | 2016-10-12 | 神雾环保技术股份有限公司 | Method and system for preparing acetylene |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117618A (en) * | 2017-06-16 | 2017-09-01 | 中国石油大学(华东) | A kind of hot method of calcium focal sphere group classification oxygen produces the device of calcium carbide |
| CN107117618B (en) * | 2017-06-16 | 2023-11-24 | 中国石油大学(华东) | Device for producing calcium carbide by calcium coke pellet hierarchical oxygen thermal method |
| CN108525608A (en) * | 2018-03-23 | 2018-09-14 | 宁夏宝塔化工中心实验室(有限公司) | A method of producing calcium carbide coke powder mix and convert calcium lime powder pressure ball molding |
| CN109133063A (en) * | 2018-10-29 | 2019-01-04 | 北京科技大学 | The method of electrothermal way generation calcium carbide |
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Application publication date: 20170419 |