CN206460319U - A kind of multichannel catalyst test apparatus - Google Patents

Abstract

The utility model discloses a multi-channel catalyst evaluation device, which consists of a gas decompression module, a multi-channel gas feed metering/distribution module, a liquid raw material storage module, a multi-channel liquid feed metering/distribution module, a multi-channel reactor and an electrical Heating furnace module, each channel pressure control module, low separation and waste oil collection module, each channel low pressure separator module, each channel liquid sampling module, multi-channel low partial pressure control module, multi-channel gas phase gating module, gas chromatography and other parts composition. The reaction temperature of each channel of the utility model is the same, and the gas-liquid feed amount and reaction pressure of each channel may be the same or different, and the device of the utility model can simultaneously carry out multiple catalyst evaluation experiments. According to the experimental requirements, the catalytic performance screening experiment of different catalysts under the same reaction conditions can be carried out, the process optimization experiment of the same catalyst with different reaction conditions can also be carried out, and the orthogonal experiment of different catalysts with different reaction conditions can also be carried out by using combinatorial chemistry methods.

Description

A multi-channel catalyst evaluation device

technical field

The utility model relates to a multi-channel catalyst evaluation device, which belongs to the technical field of multi-channel parallel reactors and catalyst evaluation.

Background technique

In a chemical reaction, a small amount of catalyst can significantly increase the main reaction rate and reduce the side reaction rate without changing the chemical balance, its own quality and chemical properties before and after the reaction, and can speed up the chemical reaction rate to several million. more than double. Catalysts play an extremely important role in the modern chemical industry. According to statistics, more than 90% of industrial processes use catalysts, such as chemical, petrochemical, biochemical, and environmental protection. With the development of the chemical industry, the demand for new high-efficiency catalysts continues to increase, and the main means of developing new catalysts is to conduct combined experiments through various active ingredients, including reaction conditions, optimization of catalytic activity, selectivity and life, which need to experience catalyst formulation Screening, small-scale test evaluation, pilot scale-up, and then to model operation, and finally put into industrial production, the development and finalization of catalysts has gone through a long R&D process, and traditional technical means are far behind the pace of demand for new processes and new catalytic materials , and the application of advanced combinatorial chemistry methods can greatly speed up the development and optimization of selection. This technology is based on a deep understanding of the catalytic reaction mechanism and catalyst design, using combinatorial chemistry methods and rapid screening techniques to identify specific catalytic The optimal catalyst in the reaction has become one of the most active frontier technologies in the field of catalyst research. Combinatorial chemistry technology is inseparable from advanced catalyst evaluation devices. Multi-channel, high-throughput catalyst evaluation devices have become a technical field that many companies are competing to enter. The market demand is large, but limited by the barriers of science and technology. At present, there are only a few high-tech companies in the world. Having mastered this technology, and most of them are concentrated in Europe and the United States, the affiliated research institutes of large domestic enterprises such as Sinopec and PetroChina can only invest huge sums of money to import related devices from abroad.

Contents of the invention

The technical problem to be solved by the utility model is to provide a multi-channel catalyst evaluation device for simultaneous evaluation and screening of multiple samples in the catalyst development process, which solves the problem of how to speed up the development and optimize the selection of catalysts.

In order to solve the above technical problems, the technical solution of the utility model is to provide a multi-channel catalyst evaluation device, which is characterized in that it includes a gas decompression module and a liquid raw material storage module, and the outlet end of the gas decompression module is connected to a multi-channel gas feed The inlet port of the metering/distribution module, the outlet port of the liquid raw material storage module are connected to the inlet port of the multi-channel liquid feed metering/distribution module, the outlet port of the multi-channel liquid feed metering/distribution module and the outlet port of the multi-channel gas feed metering/distribution module are both Connect the inlet port of the multi-channel reactor and the electric heating furnace module, the outlet port of the multi-channel reactor and the electric heating furnace module are respectively connected to the inlet port of the voltage control module of each channel, and the outlet port of the voltage control module of each channel is connected to the low-separation and waste oil collection module Connection, the outlet port of the voltage control module of each channel is connected to the inlet port of the low-pressure separator module of each channel, and the low-pressure separator module of each channel is divided into two types of connections, one is the outlet port of the low-pressure separator module of each channel connected to the multi-channel gas phase gating module The inlet end, the outlet end of the multi-channel gas phase gating module is connected to the gas chromatograph, and the other is the outlet end of each channel low-pressure separator module connected to the multi-channel low pressure control module. Sampling module connection.

Preferably, the multi-channel liquid feed metering/distribution module and the multi-channel gas feed metering/distribution module can use independent feed metering for each channel, or can use all channels for uniform metering, and then distribute them evenly through the distribution module. The same flow enters each channel.

Preferably, the number of channels is 2-16.

Preferably, the gas decompression module includes a main gas source switch and a gas decompression valve, each channel gas feed metering module is composed of a gas mass flow controller for each channel and its outlet back pressure valve, and the liquid raw material storage module is composed of Each channel is composed of raw material tanks and electronic scales at the bottom. Each channel liquid feed metering module includes raw material oil/start-stop oil switching valve, feed metering pump, multi-channel reactor and electric heating furnace module is composed of multi-channel reactor and electric heating System composition, the reactors of each channel are integrated in a reactor shell, an electric heating system is provided outside the reactor shell, the pressure control module of each channel is composed of a back pressure valve, and the liquid sampling module of each channel is composed of a pneumatic gating valve, a liquid sampling The multi-channel gas phase gating module consists of a pneumatic gating valve, a gating valve constant temperature box and a switch valve on the gas chromatography pipeline;

The main switch of the gas source is connected to the gas pressure reducing valve, the gas pressure reducing valve is connected to the gas mass flow controller of each channel, the gas mass flow controller is connected to the outlet back pressure valve, the raw material tank is connected to the switching valve for raw oil/starting and stopping oil, raw oil/ The on-off oil switching valve is connected to the feed metering pump, the outlet back pressure valve and the material metering pump are connected to the reactor of each channel, the reactor of each channel is connected to the back pressure valve, the back pressure valve is connected to the two-position three-way valve, two-position three-way One end of the through valve is connected to the low separation and waste oil collection module, and the other end of the two-position three-way valve is connected to the low-pressure separator module of each channel. The liquid phase pipeline of the module is connected to the liquid sampling bottle, and the liquid sampling bottle is connected to the low separation and waste oil collection module through the pneumatic strobe valve on the top. A pneumatic strobe valve is connected to the top, and the pneumatic strobe valve is connected to the on-off valve on the gas chromatography pipeline, and a strobe valve constant temperature box is arranged outside the pneumatic strobe valve.

Preferably, the number of ports of the pneumatic strobe valve is the same as the number of channels, and one port corresponds to one channel.

The reaction temperature of each channel of the utility model is the same, and the gas-liquid feed amount and reaction pressure of each channel may be the same or different, and the device of the utility model can simultaneously carry out multiple catalyst evaluation experiments. According to the experimental requirements, the catalytic performance screening experiment of different catalysts under the same reaction conditions can be carried out, the process optimization experiment of the same catalyst with different reaction conditions can also be carried out, and the orthogonal experiment of different catalysts with different reaction conditions can also be carried out by using combinatorial chemistry methods.

The device of the utility model is equipped with a distributed control system (DCS) required for automatic control, which realizes automatic control of device feeding, temperature and pressure, automatically collects gas-liquid samples after the reaction enters a stable state, fault alarm, automatic interlocking, and can be unmanned for a short time On-duty operation greatly reduces the number of operators, improves work efficiency, and accelerates the pace of catalyst research and development.

Description of drawings

Fig. 1 is a schematic diagram of a multi-channel catalyst evaluation device;

Fig. 2 is a scheme flow chart of a multi-channel catalyst evaluation device.

detailed description

In order to make the utility model more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

The utility model is a multi-channel catalyst evaluation device, which is used for simultaneous evaluation and screening of multiple samples in the catalyst development process, greatly improves work efficiency through automatic control, and accelerates the pace of catalyst research and development. As shown in Figure 1, a multi-channel catalyst evaluation device of the present invention consists of a gas decompression module, a multi-channel gas feed metering/distribution module, a liquid raw material storage module, a multi-channel liquid feed metering/distribution module, a multi-channel Reactor and electric heating furnace module, each channel voltage control module, low separation and waste oil collection module, each channel low pressure separator module, each channel liquid sampling module, multi-channel low partial voltage control module, multi-channel gas phase gating module, Gas chromatography and other components.

The outlet port of the gas decompression module is connected to the inlet port of the multi-channel gas feed metering/distribution module, the outlet port of the liquid raw material storage module is connected to the inlet port of the multi-channel liquid feed metering/distribution module, and the outlet port of the multi-channel liquid feed metering/distribution module is connected to the The outlet ports of the multi-channel gas feed metering/distribution module are connected to the multi-channel reactor and the inlet port of the electric heating furnace module, and the outlet ports of the multi-channel reactor and electric heating furnace module are respectively connected to the inlet ports of the voltage control modules of each channel, and the voltage control module of each channel The outlets of the modules are all connected to the low-pressure separation and waste oil collection module, and the outlets of the voltage control modules of each channel are respectively connected to the inlets of the low-pressure separator modules of each channel. The low-pressure separator modules of each channel are divided into two types of connections, one is the low-pressure The outlet of the separator module is connected to the inlet of the multi-channel gas-phase gating module, the outlet of the multi-channel gas-phase gating module is connected to the gas chromatograph, and the other is the outlet of the low-pressure separator module of each channel connected to the multi-channel low partial pressure control module, two types The low-pressure separator modules of each channel are also respectively connected with the liquid sampling modules of each channel.

The utility model combines a highly automated control system, which can realize the simultaneous evaluation of multiple catalyst samples. The gas-liquid feed flow rate and reaction temperature and pressure of each channel can be fully automatically controlled. The gas-liquid phase can automatically identify whether the reaction has entered a steady state, and according to The set program automatically collects samples, automatically analyzes the gas phase online, automatically collects the liquid phase, and analyzes offline.

Multi-channel gas feed metering/distribution modules and multi-channel liquid feed metering/distribution modules can be equipped according to specific device requirements. One material is equipped with a set of metering/distribution modules, and each module can adopt an independent feed metering scheme for each channel. It is also possible to adopt the scheme of unified measurement of all channels, and then evenly distribute the same flow into each channel through the distribution module. The former device has a large investment, but the gas-liquid feed flow rate of each channel can be flexibly set. The latter device has a small investment, but each channel The gas-liquid flow rates are exactly the same, and the reaction conditions are relatively simple.

The number of channels of the utility model can be selected in 2-16 channels. In this embodiment, 2 channels are taken as an example to introduce the program flow of the multi-channel catalyst evaluation device. Each channel is equipped with an independent gas feed metering system and an independent The scheme flow chart of the liquid feed metering system is shown in Figure 2.

The number of channels of the utility model and the feed metering system of each channel can be expanded according to the same configuration according to actual requirements. According to the principle diagram of the utility model, it consists of a gas decompression module, a multi-channel gas feed metering module, a liquid raw material storage module, a multi-channel liquid feed metering module, a multi-channel reactor and an electric heating furnace module, and each channel voltage control module , low-separation and waste oil collection module, low-pressure separator module for each channel, liquid sampling module for each channel, multi-channel low-separation pressure control module, multi-channel gas phase gating module, gas chromatograph and other parts.

The gas decompression module consists of a gas source main switch 1 and a gas decompression valve 2. The fresh gas source enters the gas feed metering module of each channel after passing through the decompression module; the gas feed metering module of each channel is controlled by the gas mass flow rate of each channel (i.e. the first gas mass flow controller 3-1, the second gas mass flow controller 3-2) and its outlet back pressure valve (i.e. the first outlet back pressure valve 4-1, the second outlet back pressure valve 4 -2) composition, the outlet back pressure valve makes the performance of the gas mass flow controller not affected by the reaction pressure; the liquid raw material storage module is composed of raw material tanks of each channel (that is, the first raw material tank 5-1, the second raw material tank 5-2) It consists of electronic scales at the bottom (namely the first electronic scale 6-1 and the second electronic scale 6-2). The raw material tank can be equipped with a gas seal and heat tracing system according to the physical requirements of the material; the liquid feed metering module of each channel includes Raw material oil/on-off oil switching valve (i.e. first raw material oil/on-off oil switching valve 7-1, second raw material oil/on-off oil switching valve 7-2), feed metering pump (i.e. first feed metering Pump 8-1, the second feeding metering pump 8-2), the raw material oil of each channel is fed to each channel reactor through the flow control of the metering pump; the multi-channel reactor and the electric heating furnace module are composed of the multi-channel reactor and its Composed of an electric heating system, the reactors of each channel (namely the first reactor 9-1, the second reactor 9-2) are integrated in a reactor shell, heated by an electric heating system 10, and each channel has the same temperature control , the temperature distribution in the device is consistent; the pressure control modules of each channel are composed of back pressure valves (namely the first back pressure valve 11-1, the second back pressure valve 11-2), and the pressure of each back pressure valve can be set independently, or can be used The pilot refers to the back pressure of the gas, and all channels can react under different pressures or operate under the same pressure; Through valve 12-1, the second two-position three-way valve 12-2) switch the product flow direction, when each channel does not collect gas phase or liquid phase products, the product directly enters the low-separation and waste oil collection module 13, if sampling is required, The product enters the low-pressure separator modules of each channel (that is, the first low-pressure separator module 14-1 of each channel, and the second low-pressure separator module 14-2 of each channel) for gas-liquid separation, and the gas phase passes through a common multi-channel low-pressure control module 21 Discharge after pressure control, and the liquid phase enters the liquid sampling module of each channel; the liquid sampling module of each channel is composed of a pneumatic strobe valve (that is, the first pneumatic strobe valve 15-1, the second pneumatic strobe valve 15-2), liquid sampling bottle (i.e. the first liquid sampling bottle 16-1, the second liquid sampling bottle 16-2), a sampling bottle thermostat (i.e. the first sampling bottle thermostat 17-1, the second sampling bottle thermostat 17-2), Each channel can be equipped with multiple liquid sampling bottles, and the collection sequence of the liquid sampling bottles is controlled by the pneumatic strobe valve. When the liquid can be directly waste oil tank; each channel gas phase pipeline is provided with a pipeline to go to the multi-channel gas phase gating module, and the multi-channel gas phase gating module includes a pneumatic gating valve 18, a gating valve constant temperature box 19 and a gas phase removal The on-off valve 20 on the chromatographic pipeline is composed. The number of ports of the pneumatic strobe valve 18 is the same as the number of channels of the device. One port corresponds to one channel, and there is no collusion between them. Each channel of the device can perform gas phase sampling and online chromatographic analysis in turn. All valves, instruments and equipment are connected by pipelines 22 of different specifications, and the pipeline can be equipped with a heat tracing system according to the nature of the material. All on-off and switching valves are available manually or pneumatically.

Claims (5)

1. A multi-channel catalyst evaluation device, characterized in that it comprises a gas decompression module and a liquid raw material storage module, the gas decompression module outlet port is connected to the multi-channel gas feed metering/distribution module inlet port, and the liquid raw material storage module outlet port Connect the inlet port of the multi-channel liquid feed metering/distribution module, the outlet port of the multi-channel liquid feed metering/distribution module and the outlet port of the multi-channel gas feed metering/distribution module are connected to the inlet port of the multi-channel reactor and the electric heating furnace module, The outlet ports of the multi-channel reactor and electric heating furnace modules are respectively connected to the inlet ports of the voltage control modules of each channel, the outlet ports of the voltage control modules of each channel are connected to the low-separation and waste oil collection module, and the outlet ports of the voltage control modules of each channel are respectively connected to the The inlet end of the low-pressure separator module is connected, and the low-pressure separator modules of each channel are divided into two types of connections, one is that the outlet end of each channel low-pressure separator module is connected to the inlet end of the multi-channel gas phase gating module, and the outlet end of the multi-channel gas phase gating module is connected to the gas phase Chromatography, the other is that the outlet end of each channel low-pressure separator module is connected to a multi-channel low-division pressure control module, and each channel of the two types of low-pressure separator modules is also connected to each channel liquid sampling module. 2. A kind of multi-channel catalyst evaluation device as claimed in claim 1, is characterized in that, described multi-channel liquid feed metering/distribution module and multi-channel gas feed metering/distribution module can adopt each channel to carry out independently For material metering, all channels can also be uniformly metered, and then evenly distributed through the distribution module to enter the same flow into each channel. 3. A multi-channel catalyst evaluation device according to claim 1, characterized in that the number of said channels is 2-16. 4. a kind of multi-channel catalyst evaluation device as claimed in claim 1 or 2, is characterized in that, described gas decompression module comprises gas source main switch, gas pressure relief valve, and each channel gas feed metering module is by each The gas mass flow controller of the channel and its outlet back pressure valve are composed. The liquid raw material storage module is composed of the raw material tank of each channel and the electronic scale at the bottom. The metering pump, multi-channel reactor and electric heating furnace module is composed of a multi-channel reactor and an electric heating system. The reactors of each channel are integrated in a reactor shell, and an electric heating system is installed outside the reactor shell. The voltage control of each channel The module is composed of a back pressure valve. The liquid sampling module of each channel is composed of a pneumatic strobe valve, a liquid sampling bottle, and a thermostat box for a sampling bottle. The multi-channel gas phase strobe module includes a pneumatic strobe valve, a strobe valve thermostat box and a gas chromatography pipeline On-off valve composition; The main switch of the gas source is connected to the gas pressure reducing valve, the gas pressure reducing valve is connected to the gas mass flow controller of each channel, the gas mass flow controller is connected to the outlet back pressure valve, the raw material tank is connected to the switching valve for raw oil/starting and stopping oil, raw oil/ The on-off oil switching valve is connected to the feed metering pump, the outlet back pressure valve and the material metering pump are connected to the reactor of each channel, the reactor of each channel is connected to the back pressure valve, the back pressure valve is connected to the two-position three-way valve, two-position three-way One end of the through valve is connected to the low separation and waste oil collection module, and the other end of the two-position three-way valve is connected to the low-pressure separator module of each channel. The liquid phase pipeline of the module is connected to the liquid sampling bottle, and the liquid sampling bottle is connected to the low separation and waste oil collection module through the pneumatic strobe valve on the top. A pneumatic strobe valve is connected to the top, and the pneumatic strobe valve is connected to the on-off valve on the gas chromatography pipeline, and a strobe valve constant temperature box is arranged outside the pneumatic strobe valve. 5 . The multi-channel catalyst evaluation device according to claim 4 , wherein the number of ports of the pneumatic strobe valve is the same as the number of channels, and one port corresponds to one channel.