Step-by-step dehydration method for wood tar hydrogenation integration device

Abstract

The invention discloses a step-by-step dehydration method of a wood tar hydrogenation combined device in the technical field of wood tar hydrogenation. The method comprises the following steps: (1) the wood tar raw material of the wood tar hydrodeoxygenation device first passes through a deep dehydration unit; (2) The reaction product of the BDO unit enters the modified BDO cold high-pressure separator for preliminary dehydration treatment; (3) The reaction product of the OTM unit enters the modified OTM cold high-pressure separator for preliminary dehydration treatment; (4) Naphtha and light diesel oil The product is finally processed by a deep dehydration device before leaving the factory. Using the technological process proposed by the method, the raw materials, intermediate products and final products of the wood tar hydrogenation complex are dehydrated step by step. After the step-by-step dehydration treatment process, the energy consumption of the combined wood tar hydrogenation unit has been greatly reduced, the product quality has been greatly improved, the stable operation time of the unit has been greatly increased, and the economic benefits of the entire unit have been improved.

Description

technical field [0001] The invention belongs to the field of oil product dehydration of bio-crude oil hydrogenation gasoline and diesel equipment, and specifically relates to a method for distributed dehydration of a wood tar hydrogenation unit. The product undergoes deep dehydration treatment to achieve the goal of low energy consumption and stable operation of the wood tar hydrogenation unit. Background technique [0002] Energy is an important material basis for maintaining the stable survival and long-term development of human beings. With the extensive exploitation and use of human beings, non-renewable fossil energy will inevitably usher in the day of exhaustion. The continuous reduction of fossil energy and the increasingly serious environmental pollution problems have prompted the rapid development of renewable energy. [0003] Biomass energy conversion technology can efficiently use biomass energy to produce various clean energy and chemical products, thereby reduc...

AI Technical Summary

Problems solved by technology

The electrostatic dehydration method refers to the electrostatic demulsification of the crude oil emulsion under the action of an electrostatic field, so that the water droplets quickly coalesce and grow under the action of gravity or centrifugal force to achieve the purpose of oil-water separation, but the electric field dehydration method has obvious defects: The energy consumption of the equipment is relatively high, and there are potential safety hazards in operation

[0015] The patent ZL01823742.8 oil dehydrator discloses a method of dehydrating oil by using a membrane, but there are problems of high cost of use and easy pollution and damage; the patent application number 200810042145.2 discloses a method and device for dehydrating diesel oil. The cyclone method is used for separation. Due to the technical characteristics of cyclone separation, it is only suitable for the separation of free water droplets above 15 μm, and the operating pressure drop is large, which cannot achieve deep dehydration of oil products with high efficiency and low consumption; patent ZL201010145423.4 A heavy oil and coal tar dehydrator is disclosed, which uses drum evaporation for dehydration, which has relatively high energy consumption and complicated operation, and is only suitable for the oil dehydration process of specific media. ZL200910065725.8 discloses a dehydration method using electric field and devices, patent 201010261697.X discloses a method and device for dehydration using ultrasonic technology, and patent application number 201310352748.3 discloses a method for dehydrating heavy dirty oil using the method of filtration-swirl-coalescence-swirl , the above patented technologies are only applicable to specific occasions, and all have the problems of high energy consumption and narrow application range, and cannot meet the requirements of deep dehydration of oil products

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