Fixed bed reactor for dimer acid production

Abstract

The invention discloses a fixed bed reactor for dimer acid production. The fixed bed reactor comprises a base, a reaction tube is arranged on the left side of the upper part of the base, and a mesh box is arranged in the reaction tube. A hollow column is fixedly connected to the middle part of the upper end of the mesh box, a wedge rod is slidably connected into the hollow column, wedge blocks aresymmetrically and slidablty connected into the middle part of the upper surface of the mesh box, elastic connecting rods are arranged on the outer sides of the wedge blocks, and clamping blocks are fixedly connected to one ends of the elastic connecting rods. A feeder is arranged at the upper end of the hollow column, a hydraulic device is fixedly connected to the left side of the feeder, a distillation bottle is arranged on the right side of the reaction tube, a valve tube is fixedly connected to the lower end of the right side of the reaction tube, and a heater is fixedly connected to the middle part of the upper surface of the base. A Y-shaped tube is fixedly connected to the upper end of the right side of the distillation bottle, a condensing tank is arranged on the right side of thedistillation bottle, a liquid squeezing device is arranged on the right side of the condensing tank, and a liquid collecting pipe is fixedly connected to the right end of the liquid squeezing device.The fixed bed reactor has the advantages that the catalytic reaction rate can be controlled conveniently, reactants can be simultaneously added, the condensation effect is good and the condensation tube is easy to clean.

Description

technical field [0001] The invention relates to the field of reactors, in particular to a fixed-bed reactor for dimer acid production. Background technique [0002] Fixed bed reactor refers to the filling of granular solid catalyst or solid reactant in the reactor to form a stacked bed of a certain height, while the gas or liquid material flows through the static fixed bed through the particle gap to realize the heterogeneous reaction process . This type of reactor is widely used in gas-solid phase reactions and liquid-solid phase reaction processes; dimer acid, usually referred to as dimer fatty acid, is a complex mixture derived from the main component containing two carboxylic acid groups It has been widely used in synthetic printed circuit board materials, ink manufacturing, rocket engine materials and other fields. [0003] At present, in the catalysis process of dimer acid production, due to the rapid reaction rate, it is difficult to accurately control the degree of...

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Problems solved by technology

[0003] At present, in the catalysis process of dimer acid production, due to the rapid reaction rate, it is difficult to accurately control the degree of catalytic reaction, which usually leads to excessive reaction of reactants and produces more by-products, which affects the purity of dimer acid produced. When the product is purified by distillation, most of the existing reactors use a single straight cooling tube, the condensation effect is poor, and there will always be liquid reagents on the inner wall of the cooling tube, which is not easy to remove, which is not convenient for the cleaning of the reactor, and also affects the purity of the product; application number 201320633987.1 discloses an adiabatic composite fixed-bed reactor for the deoxidation of oxygen-containing coalbed methane. By setting an inner cylinder inside the fixed-bed reactor to realize the design of two-layer cavities, the effective use of reaction heat can be realized. However, this technology When adding materials, multiple raw materials cannot be added at the same time, and there are technical defects such as step-by-step addition before preparation, and chemical reactions between raw materials that affect the purity of preparation.

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