Coal gas-yellow phosphorus-building material co-production integrated method

A technology of coal gasification and yellow phosphorus, applied in the chemical industry, climate sustainability, sustainable manufacturing/processing, etc., to achieve the effects of reasonable comprehensive utilization of resources, reduced product energy consumption, and high equipment productivity

Pending Publication Date: 2020-08-18
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] To sum up, the integration of coal gasification-ironmaking and coal gasification-ironmaking-building materials has been reported. It is feasible to use bauxite instead of traditional silica and feldspar as the slagging flux for yellow phosphorus production by electric furnace method, but the Coal ash is divided into fluxing agent and slagging agent, using the high-level energy of coal gasification to reduce and decompose phosphate rock to produce yellow phosphorus, and realize the integrated co-production of coal gasification and yellow phosphorus production, which has not been reported in literature.

Method used

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  • Coal gas-yellow phosphorus-building material co-production integrated method
  • Coal gas-yellow phosphorus-building material co-production integrated method
  • Coal gas-yellow phosphorus-building material co-production integrated method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Take 100 g of phosphate rock powder, weigh 13.1 g of coke according to the coke excess coefficient of 1.05, the total amount of the two acidic substances is 20.35 g, and the alkaline substance is 43.50 g. Every 100g of coal ash contains 82.07g of alkaline substances and 11.09g of acidic substances. If the acidity value of the slag is set to 1.2, 46.32g of coal ash needs to be added.

[0042] After the above materials are mixed, put them into a graphite crucible, put them into a quartz tube with a seal and an air outlet, use CO to discharge the air, then raise the temperature to 1500°C and keep it warm for 30 minutes. After melting for 3 hours, the temperature was raised to 900°C for crystallization for 1 hour, then the power was turned off and the furnace door was slightly opened, and the furnace was cooled down to 100°C before being taken out, and the natural environment was lowered to room temperature for data analysis.

[0043] After testing, the compressi...

Embodiment 2

[0044] Example 2: Take 100 g of phosphate rock powder, weigh 13.1 g of coke according to the coke excess coefficient of 1.05, the total amount of the two acidic substances is 20.35 g, and the alkaline substance is 43.50 g. Every 100g of coal ash contains 82.07g of alkaline substances and 11.09g of acidic substances. If the acidity value of the slag is set to 1.5, 68.61g of coal ash needs to be added.

[0045] After the above materials are mixed, put them into a graphite crucible, put them into a quartz tube with a seal and an air outlet, use CO to discharge the air, then raise the temperature to 1550°C and keep it for 25 minutes. , and then heated up to 800°C for crystallization for 1.5 hours, then cut off the power and slightly opened the furnace door, and took it out after the furnace cooled down to 100°C, and the natural environment dropped to room temperature for data analysis.

[0046] After testing, the compressive strength of the glass-ceramic is 589MPa, the Mohs hardne...

Embodiment 3

[0047] Example 3: Take 100 g of phosphate rock powder, weigh 13.1 g of coke according to the coke excess coefficient of 1.05, the total amount of the two acidic substances is 20.35 g, and the alkaline substance is 43.50 g. Every 100g of coal ash contains 82.07g of alkaline substances and 11.09g of acidic substances. If the acidity value of the slag is set to 1.8, 93.30g of coal ash needs to be added.

[0048] After the above materials are mixed, put them into a graphite crucible, put them into a quartz tube with a seal and an air outlet, use CO to discharge the air, then raise the temperature to 1600°C and keep it for 20 minutes. After melting for 3 hours, the temperature was raised to 850°C for 2 hours of crystallization, and then the power was turned off and the furnace door was slightly opened. After the furnace was cooled to 100°C, it was taken out, and the natural environment was lowered to room temperature for data analysis.

[0049] After testing, the compressive streng...

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Abstract

The invention discloses a coal gas-yellow phosphorus-building material co-production integrated production method, relates to the technical field of coal gasification, yellow phosphorus and building material production, and aims to utilize coal gasification high-level heat energy as a yellow phosphorus production heat source to improve the heat utilization efficiency. According to the method, thecharacteristic that the components of coal ash mainly contain silicon and aluminum acidic oxides is fully utilized, a fluxing agent is provided for reduction decomposition of phosphorite; the acidityvalue of a system is properly adjusted; other components such as titanium, magnesium and alkali metal in the coal ash are utilized, so that a basic glass composition suitable for preparing microcrystalline glass is obtained; and therefore, yellow phosphorus can be co-produced while coal gas is produced by a traditional oxygen-enriched pressurized gasification furnace, the microcrystalline glass isprepared from furnace slag, the resource utilization of solid waste produced by traditional coal gasification and yellow phosphorus production is realized. The method is of great practical significance for clean utilization of the coal and phosphorus chemical industry.

Description

technical field [0001] The invention relates to an integrated method of coal gasification, yellow phosphorus production and glass-ceramic co-production, and belongs to the technical field of clean coal utilization and energy saving and consumption reduction. Background technique [0002] Coal gasification refers to the process in which coal, coke, semi-coke and other solid fuels react with gasification agents under high temperature, normal pressure or pressurized conditions, and are converted into gas products and a small amount of residue. The gasification agent is mainly water vapor, air (or oxygen) or their mixed gas. The gas product obtained depends on the raw material coal quality, the type of gasification agent and the gasification process. The gas can be divided into air gas and semi-water gas. , water gas, etc. The coal gasification process can be used to produce fuel gas, which is used as industrial kiln gas and city gas, and is also used to produce synthesis gas, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/06C03B32/02
CPCC03B32/02C03C10/0063Y02P20/10
Inventor 夏举佩师一博魏兴王伟杰郑光亚
Owner KUNMING UNIV OF SCI & TECH
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