Low-temperature high-efficiency crude oil pour point depressant
A crude oil pour point depressant and low-temperature technology, which is applied in the field of petroleum industry, can solve the problems of poor viscosity reduction effect and poor storage stability, and achieve the effect of improving stable storage, improving dissolution and spreading performance, and improving dispersibility
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[0033] The preparation method of the composite pour point depressant base material includes the following steps:
[0034] (1) At 50~60℃, take the sepiolite and reagent A with a mass ratio of 1:5~8 through a 120-mesh sieve and mix in the reactor, stir at 400~700r / min for 1~3h, filter, and collect the filter residue After washing 3~5 times with water, transfer to an oven and dry at 60~80℃ for 4~8h to obtain the dried product. Take the dried product in a tube furnace and roast it at 300~500℃ for 3~5h, then cool to room temperature with the furnace and heat up To 550~700℃, roast for 1~3h, cool to room temperature naturally, discharge, and get roasted product;
[0035] (2) At 50~75℃, take sodium humate and mix with reagent B at a mass ratio of 1:8~13, stir for 45~65min at 400~700r / min, heat up to 100~120℃, keep warm and stir for 30~50min , To obtain the mixture, add the 37% formaldehyde solution to the mixture according to the mass ratio of 14-20:3 and mix it with nitrogen protection, ...
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