Fluoride-fixing fuel and its production process
A technology of fuel and fluorine-fixing agent, applied in fuel, fuel additives, petroleum industry and other directions, can solve the problems of poor fluorine fixing effect and incomplete fluorine removal, and achieve low cost of raw materials, good fluorine fixing effect, and slight fluorine fixing effect. Effect
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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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