Resource utilization of solid waste carbide slag: a brief
Formation of calcium carbide. The calcium carbide production technology in the industry was invented in 1892. Its production principle is that calcium oxide and coke CaC 2 reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production. Approximate 40 million tons of Recycling and utilization of calcium carbide slag
احصل على السعرEnergy and exergy analysis of a new calcium carbide production
The aim of this paper is to: (i) propose a new type of calcium carbide production method and analyze the relationship between the input and output energy Abstract: Calcium carbide is an important platform chemical for production of pure chemicals and polymers from coal. Production of calcium carbide adopted in the Development of auto-thermal production of calcium carbide
احصل على السعر利用电石渣和焦煤生产碳化钙用钙焦 USTB
J.J. Mu and R.A. Hard, A rotary kiln process for making calcium carbide, Ind. Eng. Chem. Res., 26 (1987), No. 10, p. 2063. doi: 10.1021/ie00070a022. [2] D.J. Shi, K. Qiao, and Calcium carbide (CaC) is a sustainable source of acetylene which plays an important role in organic synthesis due to its active triple bonds and terminal protons. Calcium carbide and its recent advances in biomass conversion
احصل على السعرTHE MANUFACTURE OF CALCIUM CARBIDE. Journal of the
Thermodynamic Analysis of Calcium Carbide Production. Industrial & Engineering Chemistry Research 2014, 53 (6),2537-2543. https://doi/10.1021/ie403981j; Guodong Li, The modern technology used for the production of calcium carbide is based on the reduction of calcium oxide (lime) to CaC 2 by carbon for the overall reaction CaO + 3C = CaC 2 + Calcium Carbide an overview ScienceDirect Topics
احصل على السعرProperties analysis of dry-process calcium carbide slag and
The residual amount of calcium carbide in the slag fluctuates from 0 to 0.71%. The increase of temperature and moisture can promote the escape of acetylene gas from calcium carbide slag. Vibration has no obvious promotion or suppression effect, moreover, most acetylene can escape from calcium carbide slag with the combination of Methods for oxygen thermal production of calcium carbide and synthesis gas and reactor for calcium carbide [P]: CN, 102153085 B. [33] Latta William, Vierstra Scott, Targett Matthew, et al. Cyclone reactor and method for producing usable by-products using cyclone reactor [P]: US, 20120263640. Development of auto-thermal production of calcium carbide
احصل على السعرCalcium Carbide Manufacturing: An In-Depth Look at Production
The latest report by Syndicated Analytics titled “Calcium Carbide Production Cost Analysis 2023-2028: Capital Investment, Manufacturing Process, Raw Materials, Operating Cost, Industry TrendsA novel system of carbon-calcium compound conversion for calcium carbide-acetylene production was proposed in this work, which combines two-stage carbon capture and calcium carbide waste slag reuse processes to achieve CO 2 enrichment and calcium cycle. Based on the simulation data, the proposed system was comprehensively Life cycle assessment of acetylene production from calcium carbide
احصل على السعرLife cycle assessment of acetylene production from calcium carbide
LCI data for acetylene production using the calcium carbide method can be seen in Table 1.Coke production, limestone mining, and other background data (such as requirements for electricity and steam generation, water use, sodium hydroxide production, etc.) were obtained from GaBi Databases datasets (Thinkstep, 2017).Data for the A novel system of carbon-calcium compound conversion for calcium carbide-acetylene production was proposed in this work, which combines two-stage carbon capture and calcium carbide waste slag reuse processes to achieve CO 2 enrichment and calcium cycle. Based on the simulation data, the proposed system was comprehensively Carbon-calcium composite conversion of calcium carbide
احصل على السعرComprehensive Utilization of Carbide Slag SpringerLink
In 2015, the domestic overall production of calcium carbide was 26.5 million tons/a. Carbide slag is the waste generated during industrial production, which is hard to be treated. Around 75–85% of the generated calcium carbide is discharged, while the utilization rate of this kind of solid waste is less than 50% at present.The modern technology used for the production of calcium carbide is based on the reduction of calcium oxide (lime) to CaC 2 by carbon for the overall reaction CaO + 3C = CaC 2 + CO. During this process, impurities such as sulfur and phosphorus, contained in the charge components, are also reduced and dissolved in molten calcium carbide. Technology of Ferroalloys with Alkaline-Earth Metals
احصل على السعرCase study of a novel low rank coal to calcium carbide
As calcium carbide (CaC 2) production is an energy-intensive industry, a novel low rank coal to CaC 2 (LRCtCC) process has been developed. This study is aimed to evaluate the techno-economic performance of the LRCtCC process. A model integrating particle swarm optimization and nonlinear programming (PSO-NLP) is developed to 5.1.2 level of China's calcium carbide production process. 5.1.3 progress of R&D of China's calcium carbide production process. 5.1.4 development direction of China's calcium carbide production process. 5.2 equipment and technology of China's calcium carbide industry. 5.2.1 types of calcium carbide production equipment (1) open-type calciumChina Calcium Carbide Industry Report 2016-2021, Market
احصل على السعرCalcium carbide and its recent advances in biomass conversion
Calcium carbide (CaC 2) is a sustainable source of acetylene which plays an important role in organic synthesis due to its active triple bonds and terminal protons.Solid CaC 2 has several advantages over acetylene gas such as easy handling, convenient storage and transportation. The CaC 2 is considered as a safer and more Calcium carbide (CaC 2) production is definitely such a scenario. The economy of CaC 2 production process is highly dependent on the electricity cost due to its high power consumption nature. Meanwhile, the generated CaC 2 product has a temperature of higher than 2000 °C and its heat is simply dispatched into the Techno-economic analysis of a liquid air energy storage
احصل على السعر11.4 Calcium Carbide Manufacturing epa.gov
11.4 Calcium Carbide Manufacturing 11.4.1 General Calcium carbide (CaC2) is manufactured by heating a lime and carbon mixture to 2000 to 2100°C (3632 to 3812°F) in an electric arc furnace. At those temperatures, the lime is reduced by carbon to calcium carbide and carbon monoxide (CO), according to the following reaction: 11.4 Calcium Carbide Manufacturing 11.4.1 General Calcium carbide (CaC2) is manufactured by heating a lime and carbon mixture to 2000 to 2100°C (3632 to 3812°F) in an electric arc furnace. At those temperatures, the lime is reduced by carbon to calcium carbide and carbon monoxide (CO), according to the following reaction: 11.4 Calcium Carbide Manufacturing U.S.
احصل على السعرCalcium Carbide an overview ScienceDirect Topics
Calcium carbide has the nominal formula of CaC 2 and the molecular weight of 64.0992 g/mol. The pure material is colorless, but most samples have a color ranging from black to grayish-white, depending on the grade. Its density is 2.22 g/cc and it melts at 2160 °C with a boiling point (under an inert atmosphere) of 2300 °C, where it decomposes.Its main use Emissions from calcium carbide manufacturing include particulate matter (PM), sulfur oxides (SO x), CO, CO 2, and hydrocarbons. Particulate matter is emitted from a variety of equipment and operations in the production of calcium carbide, including the coke dryer, lime kiln, electric furnace, tapEmission Factor Documentation for AP-42 Calcium
احصل على السعرComparison of new two-step calcium carbide production
The traditional calcium carbide (CaC 2) production process (TCCPP) uses block CaC 2 and coke as the main raw materials and produces CaC 2 through electrothermal smelting in an arc furnace. The new two-step CaC 2 production process (NTCCPP) uses hot pellets of calcium oxide powder and pulverized coal after pelletizing A type of calcium coke was developed for use in the oxy-thermal process of calcium carbide production. The calcium coke was prepared by the co-pyrolysis of coking coal and calcium carbide slag, which is a solid waste generated from the chlor-alkali industry.利用电石渣和焦煤生产碳化钙用钙焦 USTB
احصل على السعرCalcium Carbide Canada Commons
Calcium Carbide. Calcium carbide, also known as calcium acetylide, is a chemical compound with the chemical formula of CaC2. Its main use industrially is in the production of acetylene and calcium cyanamide.The pure material is colorless, however pieces of technical-grade calcium carbide are grey or brown and consist of about The traditional calcium carbide (CaC2) production process (TCCPP) uses block CaC2 and coke as the main raw materials and produces CaC2 through electrothermal smelting in an arc furnace. The newRecycling and utilization of calcium carbide slag
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