Fluoride-fixing fuel and its production process
A technology of fuel and fluorine-fixing agent, which is applied in the direction of fuel, fuel additives, petroleum industry, etc. It can solve the problems of incomplete fluorine removal and poor fluorine-fixing effect, and achieve the effect of good fluorine-fixing effect, low raw material cost and high efficiency
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Embodiment 1
[0029] Weigh 0.2g of coal sample (accurate to 0.0001g) and a certain amount of fluorine-fixing agent and 0.1g of SiO 2 Put the powder in a porcelain boat and mix well. Use a 15mL absorption tube filled with 0.2mol / L sodium hydroxide solution to receive the condensate. Push the front end of the porcelain boat to the low temperature zone (about 600°C) and stay there for 5 minutes to gradually burn the sample completely. Then, push the porcelain boat to a high temperature constant temperature zone (1000°C) and keep it for 10 minutes. Then, remove the absorption tube, take out the porcelain boat, add two drops of phenolphthalein to the absorption tube, neutralize it with 2mol / L nitric acid until neutral, add 10ml of buffer solution, dilute to 50mL with water, shake well, and measure with an ion selective electrode. Fluorine content.
Embodiment 2-29
[0031] The experimental conditions of Examples 2-29 are the same as those of Example 1 except that the proportions of coal samples, fluorine-fixing agent and coal are different. The measured fluorine fixation rate is listed in Table 1.
[0032] Wherein: among Examples 1-14, Examples 1-7 are actually comparative examples; among Examples 15-20, Examples 15-17 are actually comparative examples.
[0033] See Table 1 on next page.
[0034]
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