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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

Pending Publication Date: 2019-12-31
易高生物化工科技(张家港)有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[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 hydrogenation, and this process is hydrogenation Deoxidation reaction will produce water, and hydrogen chloride will dissolve in water to become hydrochloric acid, which will corrode equipment and pipelines and cause safety hazards

Method used

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  • Hydrotreating method of chlorine-containing waste animal and plant oil
  • Hydrotreating method of chlorine-containing waste animal and plant oil
  • Hydrotreating method of chlorine-containing waste animal and plant oil

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Embodiment Construction

[0022] The method of the present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited thereby.

[0023] A method for hydrogenation treatment of chlorine-containing waste animal and vegetable oils, the steps of which are:

[0024] a) Put the waste animal and vegetable oils into the dechlorination tower 2 through the A feed pump 1, and carry out the dechlorination reaction in the presence of the dechlorination agent; the reaction conditions of the dechlorination reaction are: liquid space velocity 2~8h -1 , the dechlorination temperature is 200~280℃;

[0025] b) In step a) the dechlorinated material is uniformly mixed with an environmentally friendly liquid paraffin to obtain a mixture; wherein, the environmentally friendly liquid paraffin accounts for 10wt.% to 90wt.% of the dechlorinated material in step a);

[0026] c) The mixture obtained in step b) is added to the hydrofinishing reactor 5 through ...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/12C11C1/10C11C1/08C11B13/00
CPCC11C3/12C11C1/10C11C1/08C11B13/00Y02W30/74Y02E50/10
Inventor 李保明赵紫华周凌缪科杰
Owner 易高生物化工科技(张家港)有限公司
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