News Center

Specializing in the research and development, design, manufacture, technical support and on-site service of petrochemical equipment internals, it is a qualified supplier of Sinopec, PetroChina, CNOOC, China Chemical and other enterprises

What "capabilities" should an automated micro-reaction hydrogenation unit possess?

Release time:

2023-02-02

The continuous hydrogenation reactor can provide a larger gas-liquid-solid three-phase contact area, a shorter mass transfer distance, and remove products from the system in time to avoid unnecessary by-products from excessive hydrogenation, so it shows a higher performance than The batch reactor has more excellent hydrogenation performance.

In addition, the continuous hydrogenation technology uses solid catalysts and H2 as hydrogen donors instead of homogeneous catalysis, which can easily and effectively recycle catalysts and purify and separate products, which is more in line with the principles of green chemistry. The development of this technology can meet the higher demand of fine chemical industry for product process selectivity and production efficiency.

For the selection of hydrogenation units, it is necessary to conduct comprehensive evaluation and comprehensive analysis in terms of economy and technology, and select the optimal equipment with advanced performance, safe and reliable operation, and reasonable economy.

Basic requirements of hydrogenation unit

01. Appropriate material: The hydrogenation unit needs to select the appropriate material: 304, 316L, 904L, Hastelloy, etc.

02. Sealing performance: adopt ferrule, flange, etc. to seal, and select the corresponding sealing material

Requirements: high pressure resistance, resistance to different systems, good sealing, wide application range

03. Safety: Anti-static, when there is a risk of static electricity, it can be eliminated in time

Requirements: Electrostatic treatment of the hydrogenation unit, all metal parts are grounded

04. Safety device: Install suitable safety devices such as explosion vents and unloading valves. Requirements: functions for emergency and safe disposal

For micro-reaction continuous hydrogenation, the above requirements are far from enough, and higher requirements are required to meet the actual application conditions.

Higher requirements for hydrogenation units:

01. Whether it has a safe process control system (BPCS)

Whether the software control system has the functions of process high temperature alarm, high temperature stop hydrogen flow, etc.

Can emergency shutdown (ESD) be performed in the face of abnormalities

Whether there are independent detection, transportation, logic processing and execution operation instrument sensors and final execution elements to ensure the process control of the hydrogenation process

02. Consistency between the small test equipment and the structural unit of the medium and large equipment

Whether the gas-liquid separator can be well controlled, how to quickly discover emulsification, and how to separate solutions

How to ensure the pressure stability by using the mechanical separation tank or have automatic switching emergency treatment measures

The consistency of the feedback system of the pump, which has a high stability of the pumping flow rate, is extremely important for the screening of small test conditions and the scale-up of the pilot test in the later stage, and consistent feedback is required.