The invention relates to the technical field of chemical industry and discloses a catalyst evaluating apparatus. The catalyst evaluating apparatus comprises a plurality of reaction containers, a gas input module used for inputting gas into each of the reaction containers and a gas analysis module used for extracting gas products from the reaction containers and analyzing the gas products. The catalyst evaluating apparatus further comprises sampling tubes, wherein the number of the sampling tubes is identical to the number of the reaction containers and the sampling tubes and the reaction containers are in one-to-one correspondence. The orifices of the sampling tubes are located in the reaction containers, and the sampling tubes are used for connecting the reaction containers with the gas analysis module. The reaction containers are filled with raw materials and catalysts; the raw materials react with each other under the action of the catalysts so as to produce the gas products; and the gas products enter the gas analysis module via the sampling tubes under the carrying by background gas conveyed by the gas input module, and the gas analysis module carries out analysis and produces analysis results. The catalyst evaluating apparatus has the advantages of high efficiency, high precision and low cost and can be widely applied to large-scale catalyst evaluation and research.

Catalyst evaluating apparatus

The invention discloses a solid phase extraction column for separating and enriching diesel phenolic compounds by solid phase extraction. The diesel oil can be divided to two parts of phenolic compounds and non-phenolic components (saturated hydrocarbons, aromatic hydrocarbons, etc.). The stationary phase of the solid phase extraction column used in the invention is a mixture of silica gel and neutral alumina, wherein the content of the neutral alumina is 30 to 100 wt%. The solid phase extraction column is rinsed by using a first eluting agent to obtain the non-phenolic components (saturated hydrocarbons, aromatic hydrocarbons and the like) in the diesel oil, and then, the solid phase extraction column is rinsed by using a second eluting agent to obtain the phenolic compounds in the dieseloil sample. The method is mainly used for separating and enriching the phenolic compounds in the diesel oil, can replace the traditional method of enriching diesel phenolic compounds such as alkali phase extraction, and has the advantages of simple stationary phase preparation, short processing time, less solvent dosage, low impurity content in phenolic compound components and high phenolic compound recovery rate.

Solid phase extraction column and method of separating phenolic compounds from diesel oil by solid phase extraction

The invention relates to reactor equipment, reaction system evaluation equipment with the reactor equipment and an evaluation method. The reactor equipment comprises a reaction device and a discharge device, wherein pressure drop of material flow in a distribution device is 10 times or above that of the material flow in a reactor unit. According to the reactor equipment, the reaction system can be efficiently and accurately evaluated, and more particularly, the enzyme catalysis reaction system can be efficiently and accurately evaluated.

Reactor equipment, reaction system evaluation equipment with reactor equipment and evaluation method

The invention provides a method for separating thioether compounds in a petroleum product. The method comprises the following steps: dissolving the petroleum product in a first organic solvent, transferring the dissolved oil sample into an alumina chromatographic column wetted by a second organic solvent, eluting by a third organic solvent, collecting eluent, concentrating the collected eluent, transferring the concentrated eluent into a silica gel chromatographic column wetted by a fourth organic solvent, sequentially eluting by a fifth organic solvent to remove saturated hydrocarbon, elutingthioether by a sixth organic solvent, and removing the solvent from the sixth solvent eluent to obtain a thioether component. The method provided by the invention is suitable for separating thioethercompounds in samples such as crude oil, diesel fraction, vacuum gas oil fraction and the like, has mild operation conditions, and can completely, efficiently and accurately separate the thioether compounds in petroleum products, especially low-maturity crude oil.

Method for separating thioether compounds from petroleum products

A double-column solid phase extraction method of nitrogen-containing compounds in diesel oil comprises the following steps: 1, producing solid phase extraction columns, wherein the stationary phase of the solid phase extraction column A is a silica gel and acidic alumina mixture, and the stationary phase of the solid phase extraction column B is a silica gel and alkaline alumina mixture; and 2, eluting: wetting the solid phase extraction column A by a first eluent, adding a diesel oil sample from an upper layer, flushing the solid phase extraction column A with the first eluent to obtain saturated hydrocarbons, flushing the solid phase extraction column A with a second eluent to obtain aromatic hydrocarbons, flushing the solid phase extraction column A with a third eluent to obtain neutral nitrogen-containing compounds, serially connecting the solid phase extraction column A with the solid phase extraction column B, and flushing the solid phase extraction columns A and B with a fourth eluent to obtain alkaline nitrogen-containing compounds, wherein the column A is arranged above the column B.

Double-column solid phase extraction method of nitrogen-containing compounds in diesel oil

The utility model discloses a fixed bed micro-reaction evaluating device, comprising a raw material feeding system, a reaction system, a product separation system and an on-line product analysis system, wherein the raw material feeding system comprises a single-path raw gas pipeline, a single-path raw oil pipeline and a mixer. The fixed bed micro-reaction evaluating device is characterized in that the mixer is a multi-channel raw material distribution plate and can uniformly allocate a path of mixed material into multiple paths of materials. The fixed bed micro-reaction evaluating device can be used for reaction performance evaluation test of one or more solid catalysts at the same time under the same reaction condition and has the characteristics of compact structure, low investment, convenience in operation, short test period, high working efficiency, good test result parallelism and low test cost.

Fixed bed micro-reaction evaluating device

The utility model discloses a fixed bed is turned over a little and is appraised device, the device includes raw material feed system, reaction system, result piece -rate system and result online analysis system according to process flow in proper order, this raw material feed system includes one way feed gas pipeline, two way raw materials oil pipe lines and two blenders, its characterized in that, blender are multichannel raw materials plate of distributor, can become the stranded material with mixtures uniform distribution, the utility model discloses not only can be used for one or more solid catalyst's under the same reaction condition reactivity evaluation test, can be used for a solid catalyst to carry out the reactivity evaluation test simultaneously in addition under different reaction condition, its characteristics are that flexible operation, test duration are short, work efficiency is high, the test result parallelism is good, experimentation cost low.

Fixed bed is turned over a little and is appraised device

The invention discloses a method for determining total acid content in a molecular sieve. The method comprises the following steps of a, preparing a self-supporting sheet of the molecular sieve; b, transferring the self-supporting sheet into a diffuse reflection pool, vacuumizing and heating, cooling, and recording a corresponding temperature infrared spectrogram as an infrared background spectrogram in a cooling process; c, heating the diffuse reflection pool to the required temperature, keeping the temperature unchanged, closing an air outlet valve of the diffuse reflection pool, and releasing probe molecule gas in the diffuse reflection pool in a pulsed mode, absorbing probe modules on the molecular sieve, and recording a chemical adsorption characteristic peak of protonic acid or non-protonic acid in the first pulse; d, comparing the chemical adsorption characteristic peaks of the probe molecules, affirming that the absorption of the probe molecules is saturated when the infrared spectrograms of the characteristic peaks after twice pulse absorptions are coincident, and stopping the pulse; and e, computing the total acid content in the molecular sieve according to the integral area of the chemical adsorption characteristic peak of the protonic acid or the non-protonic acid of the infrared spectrogram, and the volume of the pulse gas.

Method for determining total acid content in molecular sieve

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