A fixed-bed reactor for dimer acid production

Abstract

The invention discloses a fixed bed reactor for the production of dimer acid, which comprises a base, a reaction cylinder is arranged on the left side above the base, a net box is arranged inside the reaction cylinder, a hollow column is fixedly connected to the middle part of the upper end of the net box, and the hollow column slides inside Wedge bars are connected, and the middle part of the upper surface of the net box is symmetrically slidably connected with wedges. An elastic connecting rod is arranged on the outside of the wedges. One end of the elastic connecting rod is fixedly connected with a clamping block. A hydraulic device is fixedly connected, a distillation bottle is installed on the right side of the reaction cylinder, a valve pipe is fixedly connected to the lower end of the right side of the reaction cylinder, 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 right side of the distillation bottle, and a Y-shaped tube is fixedly connected to the upper end of the distillation bottle. The right side is provided with a condensation box, and the right side of the condensation box is provided with a squeeze device, and the right end of the squeeze device is fixedly connected with a liquid collection pipe; the present invention has the advantages of being convenient to control the catalytic reaction rate, adding reactants at the same time, good condensation effect and condensation tube The advantage of being 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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