Special wax for candlelight and preparation method thereof
A candle light and hydrorefining technology, applied in candle preparation devices, candle, fatty acid production and other directions, can solve the problems of harsh production process operating conditions, potential safety hazards, complex processes, etc., to achieve rich product lines, reduce operating costs, and process simple effect
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[0021] The invention provides a special wax for candlelight and a preparation method thereof. The preparation method comprises: sequentially performing hydrofining and deoiling operations on coal-based Fischer-Tropsch synthetic wax to obtain deoiled Fischer-Tropsch refined wax, and then performing short-path distillation and fractional distillation to obtain Components of narrow fractions: Sweat and deoil the target fractions or blended components of narrow fractions, and control the sweating temperature according to the melting point requirements of the product to obtain candlelight wax products. The preparation method of the special wax for candle light of the present invention is simple in process, strong in operability, rich in product lines, and fully utilizes raw materials. The performance of the product is stable, and the candle special wax obtained by the method is suitable for making various candles and shapes, has good ductility, and has good mold applicability.
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Embodiment
[0034] This embodiment provides a candle special wax and its preparation method. The preparation steps are as follows:
[0035] (1) Using a Fischer-Tropsch synthetic wax as a raw material, obtain a Fischer-Tropsch synthetic refined wax through hydrogenation refining, the hydrogenation temperature is 280 ° C, and the operating pressure is 7 MPa; then perform sweating and deoiling operations on it to obtain a deoiled refined wax .
[0036] (2) Preheat the deoiled and refined wax to 110°C in the raw material tank, transport it to the first molecular evaporator at a feed rate of 9kg / h, control the temperature at 200°C, and the pressure at 45Pa, and cut off the fraction 460°C distillate sections. Among them, the 400-460°C fraction is the intermediate product A at 40-60°C.
[0037] (3) The >460°C distillate section is used as a raw material, and is transported to a molecular evaporator at a feed rate of 9kg / h (no light components are distilled out in the first evaporator, and dire...
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