Fixed bed reactor

Fixed bed reactor

The system can be applied to catalyst evaluation, multi-channel fixed bed reactions, high-throughput catalyst evaluation, laboratory reactionsFixed bed reactorFluidized bedCatalytic cracking test, coal chemical industry, hydrogenation and dehydrogenation test, distillation and adsorption extraction, polymerization, environmental protection, kettle reaction, Fischer Tropsch synthesis, methanization, comprehensive utilization of carbon dioxide, biomass pyrolysis, etc.

The high-temperature and high-pressure thermal catalytic evaluation system adopts an industrial aluminum profile structure as the framework. The device includes: feeding system, constant pressure, steady flow system, preheating system, reaction system, product collection systemPLCControl system. The system has three gas-phase feeds and one liquid-phase feed; Gas phase materials and liquid phase materials are preheated and gasified in a preheating furnace, mixed evenly, and then enter the reactor for reaction; After being condensed by the condenser, the reaction products enter the gas-liquid separator for separation. The gas-phase products are discharged through the back pressure valve or analyzed by chromatography. The liquid-phase products are deposited and stored at the bottom of the gas-liquid separator, and can be sampled or discharged as needed by needle valves or regulating valves.

System Advantages

1)The pressure reducing system in the system can be directly connected to the reaction gas cylinder, and the pipeline is equipped with a proportional unloading valve, high-precision pressure gauge, and pressure sensor,All temperature control points and pressure monitoring points are equipped with over temperature and over pressure alarms, and automatic interlocking protection.

2)When different gases are introduced into the feeding system, the corresponding gas flow coefficient can be selected or entered in the flow coefficient table to achieve diversity and accuracy of gas types.

3)The interlayer temperature control standard gas module is equipped with reaction liquids such as toluene and ethanol inside the pressure resistant tube. Reaction gas or inert gas is introduced into the module, and thenppmThe effective gas is introduced into the reactor and the concentration of the gas is controlled by the temperature control module of the water bath circulating water machine; This greatly reduces experimental costs and solves the problem of expensive standard gases.

4)Constant pressure system,Used in conjunction with low-pressure and high-pressure dual pressure systemsSelect the corresponding pressure system based on the experimental pressure to provide a stable, precise, and stable experimental environment for the catalyst.

5)All system controls are adoptedPLCSoftware automation control, real-time monitoring of reaction processes, automated data processing, and providing a complete set of experimental plans. The screen adopts industrial control touch screenPLCYou can change the usage plan at any time according to your needs. Kerui Precision IndustryCRCEProvide gas chromatography, liquid chromatography, and electrochemical workstationsTPRTheTPDTheSPVTheTPVRaman and other testing and analysis instruments.

6)System feeding system, constant pressure system, steady flow system, preheating system, reaction system, product collection systemPLCIntegrated control system.

Technical Specifications

This system is a high-temperature and high-pressure catalyst evaluation device that can be used for catalyst analysis, evaluation, and screening, to study the process, explore the optimal process parameters, and guide industrial production, save production costs, and improve work efficiency.

This system adopts a tubular reaction system to achieve separate completion of high and low pressure reactions. Two tubular reactors can be used interchangeably or interchangeably, and the reactors adopt310SStainless steel material (maximum temperature resistance)1150℃）Can be used for a long time in high temperature and high pressure environments. The tubular reaction system adopts a large heat capacity reactor, which can meet the high-temperature reaction during the experimental process, and the highest temperature can reach800℃The exterior decoration of the heating furnace adopts a porous isolation plate design, which meets the high temperature inside the furnace while ensuring that the temperature outside the furnace is less than60℃.

1）Gas phase operation flow rate:

One gas phase flow rate:CH₄，0~30mL/minGas flow control accuracy:±1%；

Two gas phase flow rate:O₂，0~30mL/minGas flow control accuracy:±1%；

Three gas phase flow rates:N₂，0~50mL/minGas flow control accuracy:±1%；

Maximum withstand pressure of mass flowmeter10MPa；

Requirements for catalyst evaluation system pressure:

Atmospheric pressure test: pressure range: atmospheric pressure; Matching temperature:30-700℃；

High pressure test: pressure range: atmospheric pressure-6MPaTemperature coordination:30-300℃；

2）Liquid phase operation flow rate:

One liquid phase flow rate:0~10mL/minMeasurement pump pressure20MPaTraffic accuracy<±0.5%；

3）Integrated high and low pressure tubular reactor:

Design temperature800℃Design pressure:3MPaMaterial: Stainless steel310S；

Filling amount: inner diameter8mm，0.1-5mlThe filling amount can be adjusted according to the required filling height;

Constant temperature zone of the reactor50-100mmReal time monitoring through temperature sensors.

Additional: Quartz glass tube of equivalent specifications2Only used for low-voltage experiments.

4）Vaporization mixer:Design temperature600℃Design pressure:10MPaMaterial: Stainless steel316L; Volume:150mLThe bottom is a double coil preheater, and the upper part is a mixing tank with baffles, both of which are placed inside the preheating furnace. Export operating temperature: room temperature~300℃Adjustable;

5）Condenser:Design pressure10MPaMaterial: Stainless steel316L; Volume:350mL；

Coil condenser with two water nozzles for connecting condensate or tap water through the water pipe.

6）Gas liquid separator:Design pressure10MPaMaterial: Stainless steel316LEquipped with a defoaming plate, gas is discharged from the top and liquid is deposited at the bottom.

7）Sandwich temperature control standard gas module: (used for bubbling volatile liquids such as toluene, ethanol, etc., configured with pollutant gases to achieve catalytic reactions)

Commonly used temperature range:-10℃~95°C(Need to cooperate with temperature controlled circulating water machine);

Design pressure10MPaMaterial: Stainless steel316L；

Equipped with a water bath jacket; There are air inlet, air outlet, temperature measuring port and liquid filling port at the top, and a liquid discharge port at the bottom. The top air path adopts a two position four-way valve without dead volume switching.

8）Framework structure:Adopting industrial technology30*30Aluminum profile.

9）Accuracy control requirements：Temperature control accuracy:±1℃Pressure control accuracy:±0.1MpaGas flow control accuracy:±1%Liquid flow control accuracy:±1%.