Hydrotreating method of chlorine-containing waste animal and plant oil

A technology for waste animal and plant and hydrotreating, which is applied in the field of hydrotreating chlorine-containing waste animal and plant oil, can solve problems such as corrosion of equipment, pipelines, and safety hazards, and achieve the effects of reducing corrosion, improving quality, and reducing requirements
CN110628512APending Publication Date: 2019-12-31易高生物化工科技(张家港)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
易高生物化工科技(张家港)有限公司
Publication Date
2019-12-31

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Abstract

The invention discloses a hydrotreating method of chlorine-containing waste animal and plant oil. The method comprises: a) pumping waste animal and plant oil into a dechlorination tower through a pump, and carrying out a dechlorination reaction; b) uniformly mixing the dechlorinated material and liquid paraffin to obtain a mixture; c) feeding the obtained mixture and hydrogen into a hydrofining reactor in a mixed manner, and carrying out a hydrofining reaction; d) separating the obtained material in a high-pressure separator to obtain gas, product oil and product water; and e) feeding the product oil into a steam stripping tower, carrying out desulfurization, feeding the desulfurized product oil into a normal-pressure fractionating tower, and carrying out fractionation, wherein light liquid paraffin is obtained at the upper portion of the normal-pressure fractionating tower, and liquid paraffin is produced at the bottom of the normal-pressure fractionating tower. According to the method of the invention, the chlorine ions in waste animal and vegetable oil can be removed before hydrofining, so that the corrosion of hydrogen chloride and water generated by the reaction to equipment and pipelines is reduced, the safety of the device is improved, the requirement for equipment materials is lowered, and the quality of biodiesel is improved.
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Description

technical field

[0001] The invention belongs to the field of energy and chemical industry, and in particular relates to a method for hydrogenation treatment of chlorine-containing waste animal and vegetable oils. The prepared biodiesel can be applied to clean energy and bio-oil industries. Background technique

[0002] The amount of waste oil produced in my country every year is very large. Using the waste oil and catering waste oil recycled in large and medium-sized cities to prepare biodiesel can not only reduce the production cost of biodiesel, but also comprehensively utilize industrial waste oil and other waste oils. Turn waste oil into treasure, so as to realize the coordinated development of economy and environmental protection.

[0003] Currently, waste animal and vegetable oils can be recycled to produce second-generation high-cetane biodiesel through hydrogenation, but waste animal and vegetable oils contain chlorine, which will produce hydrogen chloride during hydr...

Claims

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