Preparation method of diesel oil pour point depressant

• Main Authors: DING MINGHONG, SHAO JUNYING, YIN KAIXIN
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2018
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

The invention relates to the technical field of pour point depressants and discloses a preparation method of a diesel oil pour point depressant. A polymer is synthesized from acrylic ester, ethylene,benzoic acid and higher alcohols ester, the carbon chain length of the acrylic ester and the carbon chain length of diesel are similar, the intermiscibility is high, the wrapping is relatively good inthe process of crystallization of the diesel, and the development of a wax crystal is hindered, so that the effect of the diesel pour point is reduced, and moreover, the depressant is adsorbed on theactive center of a crystal nucleus of the wax crystal due to a polar group in the higher alcohols ester, so that the surface characteristic of the wax crystal is changed, the growth of the crystal ishindered or the growth habit of the crystal is changed, the dispersion degree of the wax crystal is improved, the wax crystal does not coalesce easily to form a net, the adhesive attraction between the wax crystals is weakened,